* [PATCH v4 11/13] sim/erc32: Updated documentation.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-28 7:17 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 12/13] sim/erc32: Add data watchpoint support Jiri Gaisler
` (11 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Cleaned up documentation. Obsolote README files were removed,
main documentation on operation is now in READMEM.sis.
---
sim/erc32/NEWS | 108 ---------------------------
sim/erc32/README.gdb | 67 -----------------
sim/erc32/README.leon2 | 53 ++++++++++++++
sim/erc32/README.sis | 193 ++++++++++++++++---------------------------------
sim/erc32/startsim | 4 -
5 files changed, 117 insertions(+), 308 deletions(-)
delete mode 100644 sim/erc32/NEWS
delete mode 100644 sim/erc32/README.gdb
create mode 100644 sim/erc32/README.leon2
delete mode 100644 sim/erc32/startsim
diff --git a/sim/erc32/NEWS b/sim/erc32/NEWS
deleted file mode 100644
index dd24b7b..0000000
--- a/sim/erc32/NEWS
+++ /dev/null
@@ -1,108 +0,0 @@
-
-version 2.0 05-02-96
---------------------
-
-* Switched to bfd library. Any supported format (elf, coff, ...) can be used.
-* The UART devices can be set through -uart1 and -uart2 switches.
-* Switched to GNU readline.
-* Added -c option to run batch files at startup
-* 'reg' command can show different register windows (eg 'reg w3').
-* Use 'help' for online help on simulator commands
-
-version 1.8.1 20-01-96
---------------------
-
-* added -mevrev0 switch to simulate MEC rev.0 bugs in timer and uart
-
-* added -iurev0 switch to simulate IU rev.0 jmpl/restore bug
-
-* Added sis command 'batch' to run batch files
-
-
-version 1.8 30-10-95
---------------------
-
-* Added s-record support. Use the '-s' switch with sis or the 'load' command.
-
-* IU load dependencies are now modelled
-
-version 1.7 30-10-95
---------------------
-
-* Power-down mode implemented in erc32.c.
-
-* Performance display shows the ratio between simulator-time and real-time.
-
-
-version 1.6.2 25-10-95
---------------------
-
-* The UARTs can now be run at a given speed (simulator time) to better
- simulate the behaviour of interrupt routines. The "true mode" is
- selected through a compile switch in the makefile.
-
-
-version 1.6 28-09-95
---------------------
-
-* Major reorganisation of the code. mec.c and mem.c merged into erc32.c.
-
-* The load command does NOT longer load the initialised data at an address
- defined by .bdata. This is done in srt0.s using _environ.
-
-* Additional MEC functionallity added - software reset, memory access
- protection and waitstate configuration register.
-
-* interf.c - a GDB interface added
-
-* -v switch (verbose) added
-
-version 1.5 14-09-95
---------------------
-
-* Added a instruction trace buffer, enabled through the 'hist' command.
-
-* Added a 'perf' command to display statistics such as instruction mix,
- CPI, FPU holds etc.
-
-* Added -nfp switch to disable FPU.
-
-* Added -freq switch to set simulated frequency.
-
-version 1.4 22-08-95
---------------------
-
-* A -g is provided for those who have problems with GNU readline().
-
-version 1.3 26-07-95
---------------------
-
-* No major news, just a bug fix release ...
-
-
-version 1.2 13-07-95
---------------------
-
-* Added setting of IU registers through the 'reg' command. See README.
-
-* The GNU readline() function is used for command input. However, a
-ctrl-D still kills the simulator ...
-
-
-version 1.1 07-07-95
---------------------
-
-
-* Added a 'go' command
-
-* Added cycle counting for interrupt overhead.
-
-* Function 'get_mem_ptr' takes one more parameter to avoid segmentation
- faults if a.out files are loaded outside the simulated memory. See README.
-
-* Added user-defined function sim_stop().
-
-* Added a reset command. See README.
-
-* Implemented buffered output for MEC uarts to improve output speed.
-
diff --git a/sim/erc32/README.gdb b/sim/erc32/README.gdb
deleted file mode 100644
index 619fcb3..0000000
--- a/sim/erc32/README.gdb
+++ /dev/null
@@ -1,67 +0,0 @@
-How to use SIS with GDB
------------------------
-
-1. Building GDB with SIS
-
-To build GDB with the SIS/ERC32 simulator, configure with option
-'--target sparc-erc32-aout' and build as usual.
-
-2. Attaching the simulator
-
-To attach GDB to the simulator, use:
-
-target sim [options] [files]
-
-The following options are supported:
-
- -nfp Disable FPU. FPops will cause an FPU disabled trap.
-
- -freq <f> Set the simulated "system clock" to <f> MHz.
-
- -v Verbose mode.
-
- -nogdb Disable GDB breakpoint handling (see below)
-
-The listed [files] are expected to be in aout format and will be
-loaded in the simulator memory prior. This could be used to load
-a boot block at address 0x0 if the application is linked to run
-from RAM (0x2000000).
-
-To start debugging a program type 'load <program>' and debug as
-usual.
-
-The native simulator commands can be reached using the GDB 'sim'
-command:
-
-sim <sis_command>
-
-Direct simulator commands during a GDB session must be issued
-with care not to disturb GDB's operation ...
-
-For info on supported ERC32 functionality, see README.sis.
-
-
-3. Loading aout files
-
-The GDB load command loads an aout file into the simulator
-memory with the data section starting directly after the text
-section regardless of wich start address was specified for the data
-at link time! This means that your applications either has to include
-a routine that initialise the data segment at the proper address or
-link with the data placed directly after the text section.
-
-A copying routine is fairly simple, just copy all data between
-_etext and _data to a memory loaction starting at _environ. This
-should be done at the same time as the bss is cleared (in srt0.s).
-
-
-4. GDB breakpoint handling
-
-GDB inserts breakpoint in the form of the 'ta 1' instruction. The
-GDB-integrated simulator will therefore recognize the breakpoint
-instruction and return control to GDB. If the application uses
-'ta 1', the breakpoint detection can be disabled with the -nogdb
-switch. In this case however, GDB breakpoints will not work.
-
-
-Report problems to Jiri Gaisler ESA/ESTEC (jgais@wd.estec.esa.nl)
diff --git a/sim/erc32/README.leon2 b/sim/erc32/README.leon2
new file mode 100644
index 0000000..19f2fbb
--- /dev/null
+++ b/sim/erc32/README.leon2
@@ -0,0 +1,53 @@
+
+1. LEON2 emulation
+
+The file 'leon2.c' contains a model of simple LEON2 sub-system. It
+contains 16 Mbyte ROM and 16 Mbyte RAM. Standard peripherals
+such as interrupt controller, UART and timer are provided.
+The model can execute leon2 binaries that do not require an
+MMU.
+
+To start sis in Leon2 mode, add the -leon2 switch. In gdb,
+use 'target sim -leon2' .
+
+1.1 UART
+
+One LEON2 UART is emaulted, and is located at address 0x80000070.
+The following registers are implemeted:
+
+- UART RX and TX register (0x80000070)
+- UART status register (0x80000074)
+
+The UART generates interrupt 3.
+
+1.2 Timer unit
+
+The LEON2 timer unit is emulated and located at address 0x80000040.
+It is configured with two timers and separate interrupts (8 and 9).
+The scaler is configured to 16 bits, while the counters are 32 bits.
+
+1.3 Interrupt controller
+
+The interrupt controller is implemented as described in the
+LEON2 IP manual, with the exception of the interrupt level register.
+Secondary interrupts are not supported. The registers are located
+at address 0x80000090.
+
+1.5 Memory interface
+
+The following memory areas are valid for the Leon3 simulator:
+
+0x00000000 - 0x01000000 ROM (16 Mbyte, loaded at start-up)
+0x40000000 - 0x41000000 RAM (16 Mbyte, loaded at start-up)
+0x80000000 - 0x81000000 APB bus, including plug&play
+0xFFFFF000 - 0xFFFFFFFF AHB plug&play area
+
+Access to non-existing memory will result in a memory exception trap.
+
+1.8 Power-down mode
+
+The Leon2 power-down register (0x80000018) is supported. When power-down is
+entered, time is skipped forward until the next event in the event queue.
+However, if the simulator event queue is empty, power-down mode is not
+entered since no interrupt would be generated to exit from the mode. A
+Ctrl-C in the simulator window will exit the power-down mode.
diff --git a/sim/erc32/README.sis b/sim/erc32/README.sis
index 124e577..27e6ede 100644
--- a/sim/erc32/README.sis
+++ b/sim/erc32/README.sis
@@ -11,13 +11,14 @@ and peripherals.
2. Usage
-The simulator is started as follows:
+The simulator is started as follows:
-sis [-leon3] [-uart1 uart_device1] [-uart2 uart_device2]
- [-nfp] [-freq frequency] [-c batch_file] [files]
+sis [-leon2] [-leon3] [-uart1 uart_device1] [-uart2 uart_device2]
+ [-nfp] [-freq frequency] [-c batch_file] [-v] [files]
-By default, SIS emulates an ERC32 system. The -leon3 switch
-enables emulation of a LEON3 SOC system.
+By default, SIS emulates an ERC32 system. The -leon2 switch enables
+LEON2 emulation, while the -leon3 switch enables emulation of a
+LEON3 SOC system.
The emulated console uart is connected to stdin/stdout. The -uart[1,2]
switch can be used to connect the uarts to other devices.
@@ -143,8 +144,50 @@ Typing a 'Ctrl-C' will interrupt a running simulator.
Short forms of the commands are allowed, e.g 'c' 'co' or 'con' are all
interpreted as 'cont'.
+2. Using SIS with GDB
-3. Simulator core
+To attach GDB to the simulator, use:
+
+target sim [options]
+
+The following options are supported:
+
+ -leon2 Emulate a LEON2 system
+
+ -leon3 Emulate a LEON3 system
+
+ -nfp Disable FPU. FPops will cause an FPU disabled trap.
+
+ -freq <f> Set the simulated "system clock" to <f> MHz.
+
+ -v Verbose mode.
+
+ -nogdb Disable GDB breakpoint handling (see below)
+
+To start debugging a program type 'load <program>' and debug as
+usual.
+
+The native simulator commands can be reached using the GDB 'sim'
+command:
+
+sim <sis_command>
+
+Direct simulator commands during a GDB session must be issued
+with care not to disturb GDB's operation ...
+
+A program can be restarted in GDB by first issuing the load command,
+followed by run.
+
+3. GDB breakpoint handling
+
+GDB inserts breakpoint in the form of the 'ta 1' instruction. The
+GDB-integrated simulator will therefore recognize the breakpoint
+instruction and return control to GDB. If the application uses
+'ta 1', the breakpoint detection can be disabled with the -nogdb
+switch. In this case however, GDB breakpoints will not work.
+
+
+4. Simulator core
In ERC32 mode, SIS emulates the behavior of the 90C601E and 90C602E
sparc IU and FPU from Matra MHS. These are roughly equivalent to the
@@ -153,129 +196,10 @@ maintained and incremented according the IU and FPU instruction timing.
The parallel execution between the IU and FPU is modelled, as well as
stalls due to operand dependencies (FPU).
-In Leon3 mode, the core emulates the Leon3 SPARC V8 core from
+In Leon2/3 mode, the core emulates the Leon2/3 SPARC V8 core from
Gaisler Research. All SPARC V8 instructions are supported but
emulation is not fully cycle-true as the cache is not emulated.
-The core interacts with the user-defined memory modules through
-a number of functions. The memory module must provide the following
-functions:
-
-int memory_read(asi,addr,data,ws)
-int asi;
-unsigned int addr;
-unsigned int *data;
-int *ws;
-
-int memory_write(asi,addr,data,sz,ws)
-int asi;
-unsigned int addr;
-unsigned int *data;
-int sz;
-int *ws;
-
-int sis_memory_read(addr, data, length)
-unsigned int addr;
-char *data;
-unsigned int length;
-
-int sis_memory_write(addr, data, length)
-unsigned int addr;
-char *data;
-unsigned int length;
-
-int init_sim()
-
-int reset()
-
-int error_mode(pc)
-unsigned int pc;
-
-memory_read() is used by the simulator to fetch instructions and
-operands. The address space identifier (asi) and address is passed as
-parameters. The read data should be assigned to the data pointer
-(*data) and the number of waitstate to *ws. 'memory_read' should return
-0 on success and 1 on failure. A failure will cause a data or
-instruction fetch trap. memory_read() always reads one 32-bit word.
-
-sis_memory_read() is used by the simulator to display and disassemble
-memory contants. The function should copy 'length' bytes of the simulated
-memory starting at 'addr' to '*data'.
-The sis_memory_read() should return 1 on success and 0 on failure.
-Failure should only be indicated if access to unimplemented memory is attempted.
-
-memory_write() is used to write to memory. In addition to the asi
-and address parameters, the size of the written data is given by 'sz'.
-The pointer *data points to the data to be written. The 'sz' is coded
-as follows:
-
- sz access type
- 0 byte
- 1 halfword
- 2 word
- 3 double-word
-
-If a double word is written, the most significant word is in data[0] and
-the least significant in data[1].
-
-sis_memory_write() is used by the simulator during loading of programs.
-The function should copy 'length' bytes from *data to the simulated
-memory starting at 'addr'. sis_memory_write() should return 1 on
-success and 0 on failure. Failure should only be indicated if access
-to unimplemented memory is attempted. See erc32.c for more details
-on how to define the memory emulation functions.
-
-The 'init_sim' is called once when the simulator is started. This function
-should be used to perform initialisations of user defined memory or
-peripherals that only have to be done once, such as opening files etc.
-
-The 'reset' is called every time the simulator is reset, i.e. when a
-'run' command is given. This function should be used to simulate a power
-on reset of memory and peripherals.
-
-error_mode() is called by the simulator when the IU goes into error mode,
-typically if a trap is caused when traps are disabled. The memory module
-can then take actions, such as issue a reset.
-
-sys_reset() can be called by the memory module to reset the simulator. A
-reset will empty the event queue and perform a power-on reset.
-
-4. Events and interrupts
-
-The simulator supports an event queue and the generation of processor
-interrupts. The following functions are available to the user-defined
-memory module:
-
-event(cfunc,arg,delta)
-void (*cfunc)();
-int arg;
-unsigned int delta;
-
-set_int(level,callback,arg)
-int level;
-void (*callback)();
-int arg;
-
-clear_int(level)
-int level;
-
-sim_stop()
-
-The 'event' functions will schedule the execution of the function 'cfunc'
-at time 'now + delta' clock cycles. The parameter 'arg' is passed as a
-parameter to 'cfunc'.
-
-The 'set_int' function set the processor interrupt 'level'. When the interrupt
-is taken, the function 'callback' is called with the argument 'arg'. This
-will also clear the interrupt. An interrupt can be cleared before it is
-taken by calling 'clear_int' with the appropriate interrupt level.
-
-The sim_stop function is called each time the simulator stops execution.
-It can be used to flush buffered devices to get a clean state during
-single stepping etc.
-
-See 'erc32.c' for examples on how to use events and interrupts.
-
5. Memory module
The ERC32 memory module (erc32.c) emulates the functions of memory and
@@ -292,6 +216,19 @@ the MEC asic developed for the 90C601/2. It includes the following functions:
See README.erc32 on how the MEC functions are emulated.
+The Leon2 memory module (leon2.c) emulates on-chip peripherals and
+external memory for a simple Leon2 system. The modules includes the
+following functions:
+
+* AHB and APB buses
+* One UART
+* Interrupt controller
+* Timer unit with two timers
+* PROM/SRAM memory controller
+* 16 Mbyte PROM, 16 Mbyte SRAM
+
+See README.leon2 for further details on Leon2 emulation.
+
The Leon3 memory module (leon3.c) emulates on-chip peripherals and
external memory for a simple Leon3 system. The modules includes the
following functions:
@@ -305,9 +242,7 @@ following functions:
See README.leon3 for further details on Leon3 emulation.
-6. Compile and linking programs
-
-7. IU and FPU instruction timing.
+6. IU and FPU instruction timing.
The simulator provides cycle true simulation for ERC32. The following table
shows the emulated instruction timing for 90C601E & 90C602E:
diff --git a/sim/erc32/startsim b/sim/erc32/startsim
deleted file mode 100644
index 1b9b41c..0000000
--- a/sim/erc32/startsim
+++ /dev/null
@@ -1,4 +0,0 @@
-#
-xterm -e sis $* &
-xterm -e tip /dev/ttypc &
-
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v4 12/13] sim/erc32: Add data watchpoint support
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
2015-03-17 21:03 ` [PATCH v4 11/13] sim/erc32: Updated documentation Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-28 7:16 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 07/13] sim/erc32: Access memory subsystem through struct memsys Jiri Gaisler
` (10 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Add watchpoint to all SPARC targets (erc32, leon2, leon3).
---
sim/erc32/exec.c | 54 ++++++++++++++++++++++++++------
sim/erc32/func.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
sim/erc32/interf.c | 3 +-
sim/erc32/sis.c | 32 ++++++++++++++-----
sim/erc32/sis.h | 23 +++++++++++++-
5 files changed, 181 insertions(+), 22 deletions(-)
diff --git a/sim/erc32/exec.c b/sim/erc32/exec.c
index 65d7487..44d4dda 100644
--- a/sim/erc32/exec.c
+++ b/sim/erc32/exec.c
@@ -395,6 +395,20 @@ extract_byte_signed (uint32 data, uint32 address)
return tmp;
}
+/* Decode watchpoint address mask from opcode. Not correct for LDST,
+ SWAP and STFSR but watchpoints will work anyway. */
+
+static unsigned char
+wpmask(uint32 op3)
+{
+ switch (op3 & 3) {
+ case 0: return(3); /* word */
+ case 1: return(0); /* byte */
+ case 2: return(1); /* half-word */
+ case 3: return(7); /* double word */
+ }
+}
+
int
dispatch_instruction (sregs)
struct pstate *sregs;
@@ -698,6 +712,12 @@ dispatch_instruction (sregs)
}
if (eicc & 1) {
sregs->trap = (0x80 | ((rs1 + operand2) & 0x7f));
+ if ((sregs->trap == 129) && (sis_gdb_break) &&
+ (sregs->inst == 0x91d02001))
+ {
+ sregs->trap = WPT_TRAP;
+ sregs->bphit = 1;
+ }
}
break;
@@ -1211,18 +1231,25 @@ dispatch_instruction (sregs)
address = rs1 + operand2;
- if (sregs->psr & PSR_S)
- asi = 11;
- else
- asi = 10;
-
if (op3 & 4) {
sregs->icnt = T_ST; /* Set store instruction count */
+ if (sregs->wpwnum) {
+ if (sregs->wphit = check_wpw(sregs, address, wpmask(op3))) {
+ sregs->trap = WPT_TRAP;
+ break;
+ }
+ }
#ifdef STAT
sregs->nstore++;
#endif
} else {
sregs->icnt = T_LD; /* Set load instruction count */
+ if (sregs->wprnum) {
+ if (sregs->wphit = check_wpr(sregs, address, wpmask(op3))) {
+ sregs->trap = WPT_TRAP;
+ break;
+ }
+ }
#ifdef STAT
sregs->nload++;
#endif
@@ -2133,12 +2160,18 @@ execute_trap(sregs)
{
int32 cwp;
- if (sregs->trap == 256) {
- sregs->pc = 0;
- sregs->npc = 4;
- sregs->trap = 0;
- } else if (sregs->trap == 257) {
+ if (sregs->trap >= 256) {
+ switch (sregs->trap) {
+ case 256:
+ sregs->pc = 0;
+ sregs->npc = 4;
+ sregs->trap = 0;
+ break;
+ case ERROR_TRAP:
return (ERROR);
+ case WPT_TRAP:
+ return (WPT_HIT);
+ }
} else {
if ((sregs->psr & PSR_ET) == 0)
@@ -2231,6 +2264,7 @@ init_regs(sregs)
sregs->fpu_pres = !nfp;
set_fsr(sregs->fsr);
sregs->bphit = 0;
+ sregs->wphit = 0;
sregs->ildreg = 0;
sregs->ildtime = 0;
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index ae740ec..0be47f0 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -62,7 +62,9 @@ uint32 last_load_addr = 0;
int nouartrx = 0;
host_callback *sim_callback;
const struct memsys *ms = &erc32sys;
-int cputype = 0; /* 0 = erc32, 3 = leon3 */
+int cputype = 0; /* 0 = erc32, 2 = leon2,3 = leon3 */
+int sis_gdb_break;
+
#ifdef ERRINJ
uint32 errcnt = 0;
@@ -626,6 +628,53 @@ exec_cmd(struct pstate *sregs, const char *cmd)
stat = run_sim(sregs, UINT64_MAX, 0);
daddr = sregs->pc;
ms->sim_halt();
+ } else if (strncmp(cmd1, "wp", clen) == 0) {
+ for (i = 0; i < sregs->wprnum; i++) {
+ printf(" %d : 0x%08x (read)\n", i + 1, sregs->wprs[i]);
+ }
+ for (i = 0; i < sregs->wpwnum; i++) {
+ printf(" %d : 0x%08x (write)\n", i + 1, sregs->wpws[i]);
+ }
+ } else if (strncmp(cmd1, "+wpr", clen) == 0) {
+ if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
+ sregs->wprs[sregs->wprnum] = VAL(cmd1) & ~0x3;
+ sregs->wprm[sregs->wprnum] = 3;
+ printf("added read watchpoint %d at 0x%08x\n",
+ sregs->wprnum + 1, sregs->wprs[sregs->wprnum]);
+ sregs->wprnum += 1;
+ }
+ } else if (strncmp(cmd1, "-wpr", clen) == 0) {
+ if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
+ i = VAL(cmd1) - 1;
+ if ((i >= 0) && (i < sregs->wprnum)) {
+ printf("deleted read watchpoint %d at 0x%08x\n", i + 1,
+ sregs->wprs[i]);
+ for (; i < sregs->wprnum - 1; i++) {
+ sregs->wprs[i] = sregs->wprs[i + 1];
+ }
+ sregs->wprnum -= 1;
+ }
+ }
+ } else if (strncmp(cmd1, "+wpw", clen) == 0) {
+ if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
+ sregs->wpws[sregs->wpwnum] = VAL(cmd1) & ~0x3;
+ sregs->wpwm[sregs->wpwnum] = 3;
+ printf("added write watchpoint %d at 0x%08x\n",
+ sregs->wpwnum + 1, sregs->wpws[sregs->wpwnum]);
+ sregs->wpwnum += 1;
+ }
+ } else if (strncmp(cmd1, "-wpw", clen) == 0) {
+ if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
+ i = VAL(cmd1) - 1;
+ if ((i >= 0) && (i < sregs->wpwnum)) {
+ printf("deleted write watchpoint %d at 0x%08x\n", i + 1,
+ sregs->wpws[i]);
+ for (; i < sregs->wpwnum - 1; i++) {
+ sregs->wpws[i] = sregs->wpws[i + 1];
+ }
+ sregs->wpwnum -= 1;
+ }
+ }
} else
printf("syntax error\n");
}
@@ -716,6 +765,8 @@ init_bpt(sregs)
struct pstate *sregs;
{
sregs->bptnum = 0;
+ sregs->wprnum = 0;
+ sregs->wpwnum = 0;
sregs->histlen = 0;
sregs->histind = 0;
sregs->histbuf = NULL;
@@ -1029,6 +1080,44 @@ check_bpt(sregs)
return (0);
}
+int
+check_wpr(sregs, address, mask)
+ struct pstate *sregs;
+ int32 address;
+ unsigned char mask;
+{
+ int32 i, msk;
+
+ for (i = 0; i < sregs->wprnum; i++) {
+ msk = ~(mask | sregs->wprm[i]);
+ if (((address ^ sregs->wprs[i]) & msk) == 0) {
+ sregs->wpaddress = address;
+ if (sregs->wphit) return (0);
+ return (WPT_HIT);
+ }
+ }
+ return (0);
+}
+
+int
+check_wpw(sregs, address, mask)
+ struct pstate *sregs;
+ int32 address;
+ unsigned char mask;
+{
+ int32 i, msk;
+
+ for (i = 0; i < sregs->wpwnum; i++) {
+ msk = ~(mask | sregs->wpwm[i]);
+ if (((address ^ sregs->wpws[i]) & msk) == 0) {
+ sregs->wpaddress = address;
+ if (sregs->wphit) return (0);
+ return (WPT_HIT);
+ }
+ }
+ return (0);
+}
+
void
reset_all()
{
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 2ed9914..f04041c 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -37,8 +37,6 @@
#define PSR_CWP 0x7
-int sis_gdb_break = 1;
-
int
run_sim(sregs, icount, dis)
struct pstate *sregs;
@@ -163,6 +161,7 @@ sim_open (kind, callback, abfd, argv)
int freq = 0;
sim_callback = callback;
+ sis_gdb_break = 1;
while (argv[argc])
argc++;
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index 99d5286..7c984bc 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -75,11 +75,7 @@ run_sim(sregs, icount, dis)
sregs->trap = I_ACC_EXC;
} else {
if (deb) {
- if ((sregs->bphit = check_bpt(sregs)) != 0) {
- ms->restore_stdio();
- return (BPT_HIT);
- }
- if (sregs->histlen) {
+ if (sregs->histlen) {
sregs->histbuf[sregs->histind].addr = sregs->pc;
sregs->histbuf[sregs->histind].time = ebase.simtime;
sregs->histind++;
@@ -90,14 +86,25 @@ run_sim(sregs, icount, dis)
printf(" %8" PRIu64 " ", ebase.simtime);
dis_mem(sregs->pc, 1, &dinfo);
}
+ if ((sregs->bptnum) && (sregs->bphit = check_bpt(sregs)))
+ icount = 0;
+ else {
+ dispatch_instruction(sregs);
+ icount--;
+ }
+ } else {
+ dispatch_instruction(sregs);
+ icount--;
}
- dispatch_instruction(sregs);
- icount--;
}
}
if (sregs->trap) {
irq = 0;
- sregs->err_mode = execute_trap(sregs);
+ if ((sregs->err_mode = execute_trap(sregs)) == WPT_HIT) {
+ sregs->err_mode = 0;
+ sregs->trap = 0;
+ icount = 0;
+ }
if (sregs->err_mode) {
ms->error_mode(sregs->pc);
icount = 0;
@@ -118,6 +125,10 @@ run_sim(sregs, icount, dis)
ctrl_c = 0;
return (CTRL_C);
}
+ if (sregs->bphit)
+ return (BPT_HIT);
+ if (sregs->wphit)
+ return (WPT_HIT);
return (TIME_OUT);
}
@@ -283,6 +294,11 @@ main(argc, argv)
printf(" %8" PRIu64 " ", ebase.simtime);
dis_mem(sregs.pc, 1, &dinfo);
break;
+ case WPT_HIT:
+ printf("watchpoint at 0x%08x reached, pc = 0x%08x\n",
+ sregs.wpaddress, sregs.pc);
+ sregs.wphit = 1;
+ break;
default:
break;
}
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index aef501b..abd21da 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -40,8 +40,10 @@
/* Maximum # of floating point queue */
#define FPUQN 1
-/* Maximum # of breakpoints */
+/* Maximum # of breakpoints and watchpoints */
#define BPT_MAX 256
+#define WPR_MAX 256
+#define WPW_MAX 256
struct histype {
unsigned addr;
@@ -101,6 +103,14 @@ struct pstate {
uint32 bptnum;
uint32 bphit;
uint32 bpts[BPT_MAX]; /* Breakpoints */
+ uint32 wprnum;
+ uint32 wphit;
+ uint32 wprs[WPR_MAX]; /* Read Watchpoints */
+ unsigned char wprm[WPR_MAX]; /* Read Watchpoint masks*/
+ uint32 wpwnum;
+ uint32 wpws[WPW_MAX]; /* Write Watchpoints */
+ unsigned char wpwm[WPW_MAX]; /* Write Watchpoint masks */
+ uint32 wpaddress;
uint32 ltime; /* Load interlock time */
uint32 hold; /* IU hold cycles in current inst */
@@ -176,12 +186,19 @@ struct memsys {
void (*boot_init) (void);
};
+/* return values for run_sim */
#define OK 0
#define TIME_OUT 1
#define BPT_HIT 2
#define ERROR 3
#define CTRL_C 4
+#define WPT_HIT 5
+/* special simulator trap types */
+#define ERROR_TRAP 257
+#define WPT_TRAP 258
+
+/* cpu type defines */
#define CPU_LEON2 2
#define CPU_LEON3 3
@@ -230,6 +247,9 @@ extern void advance_time (struct pstate *sregs);
extern uint32 now (void);
extern int wait_for_irq (void);
extern int check_bpt (struct pstate *sregs);
+extern int check_wpr(struct pstate *sregs, int32 address, unsigned char mask);
+extern int check_wpw(struct pstate *sregs, int32 address, unsigned char mask);
+
extern void reset_all (void);
extern void sys_reset (void);
extern void sys_halt (void);
@@ -240,6 +260,7 @@ extern host_callback *sim_callback;
extern int current_target_byte_order;
extern int dumbio;
extern int cputype;
+extern int sis_gdb_break;
/* exec.c */
extern int dispatch_instruction (struct pstate *sregs);
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v4 07/13] sim/erc32: Access memory subsystem through struct memsys.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
2015-03-17 21:03 ` [PATCH v4 11/13] sim/erc32: Updated documentation Jiri Gaisler
2015-03-17 21:03 ` [PATCH v4 12/13] sim/erc32: Add data watchpoint support Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-28 7:15 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 09/13] sim/erc32: Add support for LEON3 processor emulation Jiri Gaisler
` (9 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Introduce an common API to access emulated memory. This allows
to emulate different types of SPARC-based CPUs.
* erc32.c : Export memory operations through struct memsys erc32sys.
* exec.c (dispatch_instruction) : Access memory through common API.
* func.c, interf.c, sis.c : As above.
* sis.h : Define struct memsys as common memory API
---
sim/erc32/erc32.c | 51 +++++++++++++++++++++++++++------------------------
sim/erc32/exec.c | 42 +++++++++++++++++++++---------------------
sim/erc32/func.c | 36 ++++++++++++++++++++----------------
sim/erc32/interf.c | 39 +++++++++++++++++++++------------------
sim/erc32/sis.c | 15 ++++++---------
sim/erc32/sis.h | 43 ++++++++++++++++++++++++++-----------------
6 files changed, 121 insertions(+), 105 deletions(-)
diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c
index 43f0644..f3cce80 100644
--- a/sim/erc32/erc32.c
+++ b/sim/erc32/erc32.c
@@ -55,11 +55,6 @@ static int tty_setup = 1; /* default setup if not a tty */
extern int errmec;
#endif
-/* The target's byte order is big-endian by default until we load a
- little-endian program. */
-
-int current_target_byte_order = BIG_ENDIAN;
-
#define MEC_WS 0 /* Waitstates per MEC access (0 ws) */
#define MOK 0
@@ -307,7 +302,7 @@ static host_callback *callback;
/* One-time init */
-void
+static void
init_sim()
{
callback = sim_callback;
@@ -316,7 +311,7 @@ init_sim()
/* Power-on reset init */
-void
+static void
reset()
{
mec_reset();
@@ -396,7 +391,7 @@ mecparerror()
/* IU error mode manager */
-void
+static void
error_mode(pc)
uint32 pc;
{
@@ -467,7 +462,7 @@ decode_mcr()
/* Flush ports when simulator stops */
-void
+static void
sim_halt()
{
#ifdef FAST_UART
@@ -475,13 +470,6 @@ sim_halt()
#endif
}
-int
-sim_stop(SIM_DESC sd)
-{
- ctrl_c = 1;
- return 1;
-}
-
static void
close_port()
{
@@ -491,7 +479,7 @@ close_port()
fclose(f2in);
}
-void
+static void
exit_sim()
{
close_port();
@@ -943,7 +931,7 @@ mec_write(addr, data)
static int ifd1 = -1, ifd2 = -1, ofd1 = -1, ofd2 = -1;
-void
+static void
init_stdio()
{
if (dumbio)
@@ -958,7 +946,7 @@ init_stdio()
}
}
-void
+static void
restore_stdio()
{
if (dumbio)
@@ -1630,7 +1618,7 @@ store_bytes (mem, waddr, data, sz, ws)
/* Memory emulation */
-int
+static int
memory_iread(uint32 addr, uint32 *data, int32 *ws)
{
uint32 asi;
@@ -1655,7 +1643,7 @@ memory_iread(uint32 addr, uint32 *data, int32 *ws)
return 1;
}
-int
+static int
memory_read(asi, addr, data, sz, ws)
int32 asi;
uint32 addr;
@@ -1729,7 +1717,7 @@ memory_read(asi, addr, data, sz, ws)
return (1);
}
-int
+static int
memory_write(asi, addr, data, sz, ws)
int32 asi;
uint32 addr;
@@ -1865,7 +1853,7 @@ get_mem_ptr(addr, size)
return ((char *) -1);
}
-int
+static int
sis_memory_write(addr, data, length)
uint32 addr;
const unsigned char *data;
@@ -1880,7 +1868,7 @@ sis_memory_write(addr, data, length)
return (length);
}
-int
+static int
sis_memory_read(addr, data, length)
uint32 addr;
char *data;
@@ -1910,3 +1898,18 @@ boot_init (void)
sregs.r[14] = sregs.r[30] - 96 * 4;
mec_mcr |= 1; /* power-down enabled */
}
+
+const struct memsys erc32sys = {
+ init_sim,
+ reset,
+ error_mode,
+ sim_halt,
+ exit_sim,
+ init_stdio,
+ restore_stdio,
+ memory_iread,
+ memory_read,
+ memory_write,
+ sis_memory_write,
+ sis_memory_read
+};
diff --git a/sim/erc32/exec.c b/sim/erc32/exec.c
index 38e1045..71ae677 100644
--- a/sim/erc32/exec.c
+++ b/sim/erc32/exec.c
@@ -1244,9 +1244,9 @@ dispatch_instruction (sregs)
else
rdd = &(sregs->g[rd]);
}
- mexc = memory_read(asi, address, ddata, 2, &ws);
+ mexc = ms->memory_read(asi, address, ddata, 2, &ws);
sregs->hold += ws;
- mexc |= memory_read(asi, address+4, &ddata[1], 2, &ws);
+ mexc |= ms->memory_read(asi, address+4, &ddata[1], 2, &ws);
sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
@@ -1267,7 +1267,7 @@ dispatch_instruction (sregs)
sregs->trap = TRAP_UNALI;
break;
}
- mexc = memory_read(asi, address, &data, 2, &ws);
+ mexc = ms->memory_read(asi, address, &data, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1278,7 +1278,7 @@ dispatch_instruction (sregs)
case LDSTUBA:
if (!chk_asi(sregs, &asi, op3)) break;
case LDSTUB:
- mexc = memory_read(asi, address, &data, 0, &ws);
+ mexc = ms->memory_read(asi, address, &data, 0, &ws);
sregs->hold += ws;
sregs->icnt = T_LDST;
if (mexc) {
@@ -1288,7 +1288,7 @@ dispatch_instruction (sregs)
data = extract_byte(data, address);
*rdd = data;
data = 0x0ff;
- mexc = memory_write(asi, address, &data, 0, &ws);
+ mexc = ms->memory_write(asi, address, &data, 0, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1302,7 +1302,7 @@ dispatch_instruction (sregs)
if (!chk_asi(sregs, &asi, op3)) break;
case LDSB:
case LDUB:
- mexc = memory_read(asi, address, &data, 0, &ws);
+ mexc = ms->memory_read(asi, address, &data, 0, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1323,7 +1323,7 @@ dispatch_instruction (sregs)
sregs->trap = TRAP_UNALI;
break;
}
- mexc = memory_read(asi, address, &data, 1, &ws);
+ mexc = ms->memory_read(asi, address, &data, 1, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1349,7 +1349,7 @@ dispatch_instruction (sregs)
(sregs->frs2 == rd))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = memory_read(asi, address, &data, 2, &ws);
+ mexc = ms->memory_read(asi, address, &data, 2, &ws);
sregs->hold += ws;
sregs->flrd = rd;
sregs->ltime = ebase.simtime + sregs->icnt + FLSTHOLD +
@@ -1375,9 +1375,9 @@ dispatch_instruction (sregs)
((sregs->frs2 >> 1) == (rd >> 1)))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = memory_read(asi, address, ddata, 2, &ws);
+ mexc = ms->memory_read(asi, address, ddata, 2, &ws);
sregs->hold += ws;
- mexc |= memory_read(asi, address+4, &ddata[1], 2, &ws);
+ mexc |= ms->memory_read(asi, address+4, &ddata[1], 2, &ws);
sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
@@ -1406,7 +1406,7 @@ dispatch_instruction (sregs)
sregs->trap = TRAP_UNALI;
break;
}
- mexc = memory_read(asi, address, &data, 2, &ws);
+ mexc = ms->memory_read(asi, address, &data, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1428,7 +1428,7 @@ dispatch_instruction (sregs)
if (ebase.simtime < sregs->ftime) {
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = memory_write(asi, address, &sregs->fsr, 2, &ws);
+ mexc = ms->memory_write(asi, address, &sregs->fsr, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1442,7 +1442,7 @@ dispatch_instruction (sregs)
sregs->trap = TRAP_UNALI;
break;
}
- mexc = memory_write(asi, address, rdd, 2, &ws);
+ mexc = ms->memory_write(asi, address, rdd, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1451,7 +1451,7 @@ dispatch_instruction (sregs)
case STBA:
if (!chk_asi(sregs, &asi, op3)) break;
case STB:
- mexc = memory_write(asi, address, rdd, 0, &ws);
+ mexc = ms->memory_write(asi, address, rdd, 0, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1471,7 +1471,7 @@ dispatch_instruction (sregs)
else
rdd = &(sregs->g[rd]);
}
- mexc = memory_write(asi, address, rdd, 3, &ws);
+ mexc = ms->memory_write(asi, address, rdd, 3, &ws);
sregs->hold += ws;
sregs->icnt = T_STD;
#ifdef STAT
@@ -1500,7 +1500,7 @@ dispatch_instruction (sregs)
break;
}
rdd = &(sregs->fpq[0]);
- mexc = memory_write(asi, address, rdd, 3, &ws);
+ mexc = ms->memory_write(asi, address, rdd, 3, &ws);
sregs->hold += ws;
sregs->icnt = T_STD;
#ifdef STAT
@@ -1521,7 +1521,7 @@ dispatch_instruction (sregs)
sregs->trap = TRAP_UNALI;
break;
}
- mexc = memory_write(asi, address, rdd, 1, &ws);
+ mexc = ms->memory_write(asi, address, rdd, 1, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1540,7 +1540,7 @@ dispatch_instruction (sregs)
if (sregs->frd == rd)
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = memory_write(asi, address, &sregs->fsi[rd], 2, &ws);
+ mexc = ms->memory_write(asi, address, &sregs->fsi[rd], 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1560,7 +1560,7 @@ dispatch_instruction (sregs)
if ((sregs->frd == rd) || (sregs->frd + 1 == rd))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = memory_write(asi, address, &sregs->fsi[rd], 3, &ws);
+ mexc = ms->memory_write(asi, address, &sregs->fsi[rd], 3, &ws);
sregs->hold += ws;
sregs->icnt = T_STD;
#ifdef STAT
@@ -1577,13 +1577,13 @@ dispatch_instruction (sregs)
sregs->trap = TRAP_UNALI;
break;
}
- mexc = memory_read(asi, address, &data, 2, &ws);
+ mexc = ms->memory_read(asi, address, &data, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
break;
}
- mexc = memory_write(asi, address, rdd, 2, &ws);
+ mexc = ms->memory_write(asi, address, rdd, 2, &ws);
sregs->hold += ws;
sregs->icnt = T_LDST;
if (mexc) {
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 1cb156d..210842b 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -33,7 +33,10 @@
#define VAL(x) strtoul(x,(char **)NULL,0)
-extern int current_target_byte_order;
+/* The target's byte order is big-endian by default until we load a
+ little-endian program. */
+int current_target_byte_order = BIG_ENDIAN;
+
int dumbio = 0; /* normal, smart, terminal oriented IO by default */
struct disassemble_info dinfo;
@@ -56,6 +59,7 @@ extern int ext_irl;
uint32 last_load_addr = 0;
int nouartrx = 0;
host_callback *sim_callback;
+const struct memsys *ms = &erc32sys;
#ifdef ERRINJ
uint32 errcnt = 0;
@@ -433,7 +437,7 @@ exec_cmd(struct pstate *sregs, const char *cmd)
stat = run_sim(sregs, VAL(cmd1), 0);
}
daddr = sregs->pc;
- sim_halt();
+ ms->sim_halt();
} else if (strncmp(cmd1, "debug", clen) == 0) {
if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
sis_verbose = VAL(cmd1);
@@ -484,7 +488,7 @@ exec_cmd(struct pstate *sregs, const char *cmd)
stat = run_sim(sregs, UINT64_MAX, 0);
}
daddr = sregs->pc;
- sim_halt();
+ ms->sim_halt();
} else if (strncmp(cmd1, "help", clen) == 0) {
gen_help();
} else if (strncmp(cmd1, "history", clen) == 0) {
@@ -558,7 +562,7 @@ exec_cmd(struct pstate *sregs, const char *cmd)
stat = run_sim(sregs, VAL(cmd1), 0);
}
daddr = sregs->pc;
- sim_halt();
+ ms->sim_halt();
} else if (strncmp(cmd1, "shell", clen) == 0) {
if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
if (system(&cmdsave[clen])) {
@@ -568,12 +572,12 @@ exec_cmd(struct pstate *sregs, const char *cmd)
} else if (strncmp(cmd1, "step", clen) == 0) {
stat = run_sim(sregs, 1, 1);
daddr = sregs->pc;
- sim_halt();
+ ms->sim_halt();
} else if (strncmp(cmd1, "tcont", clen) == 0) {
sregs->tlimit = limcalc(sregs->freq);
stat = run_sim(sregs, UINT64_MAX, 0);
daddr = sregs->pc;
- sim_halt();
+ ms->sim_halt();
} else if (strncmp(cmd1, "tgo", clen) == 0) {
if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
len = last_load_addr;
@@ -586,7 +590,7 @@ exec_cmd(struct pstate *sregs, const char *cmd)
printf("resuming at 0x%08x\n",sregs->pc);
stat = run_sim(sregs, UINT64_MAX, 0);
daddr = sregs->pc;
- sim_halt();
+ ms->sim_halt();
} else if (strncmp(cmd1, "tlimit", clen) == 0) {
sregs->tlimit = limcalc(sregs->freq);
if (sregs->tlimit != (uint32) -1)
@@ -600,7 +604,7 @@ exec_cmd(struct pstate *sregs, const char *cmd)
}
printf("\n");
daddr = sregs->pc;
- sim_halt();
+ ms->sim_halt();
} else if (strncmp(cmd1, "trun", clen) == 0) {
ebase.simtime = 0;
reset_all();
@@ -608,7 +612,7 @@ exec_cmd(struct pstate *sregs, const char *cmd)
sregs->tlimit = limcalc(sregs->freq);
stat = run_sim(sregs, UINT64_MAX, 0);
daddr = sregs->pc;
- sim_halt();
+ ms->sim_halt();
} else
printf("syntax error\n");
}
@@ -780,7 +784,7 @@ static void print_insn_sparc_sis(uint32 addr, struct disassemble_info *info)
{
unsigned char i[4];
- sis_memory_read(addr, i, 4);
+ ms->sis_memory_read(addr, i, 4);
dinfo.buffer_vma = addr;
dinfo.buffer_length = 4;
dinfo.buffer = i;
@@ -796,10 +800,10 @@ disp_ctrl(sregs)
printf("\n psr: %08X wim: %08X tbr: %08X y: %08X\n",
sregs->psr, sregs->wim, sregs->tbr, sregs->y);
- sis_memory_read(sregs->pc, (char *) &i, 4);
+ ms->sis_memory_read(sregs->pc, (char *) &i, 4);
printf("\n pc: %08X = %08X ", sregs->pc, i);
print_insn_sparc_sis(sregs->pc, &dinfo);
- sis_memory_read(sregs->npc, (char *) &i, 4);
+ ms->sis_memory_read(sregs->npc, (char *) &i, 4);
printf("\n npc: %08X = %08X ", sregs->npc, i);
print_insn_sparc_sis(sregs->npc, &dinfo);
if (sregs->err_mode)
@@ -830,7 +834,7 @@ disp_mem(addr, len)
for (i = addr & ~3; i < ((addr + len) & ~3); i += 16) {
printf("\n %8X ", i);
for (j = 0; j < 4; j++) {
- sis_memory_read((i + (j * 4)), data.u8, 4);
+ ms->sis_memory_read((i + (j * 4)), data.u8, 4);
printf("%08x ", data.u32);
mem[j] = data.u32;
}
@@ -859,7 +863,7 @@ dis_mem(addr, len, info)
} data;
for (i = addr & -3; i < ((addr & -3) + (len << 2)); i += 4) {
- sis_memory_read(i, data.u8, 4);
+ ms->sis_memory_read(i, data.u8, 4);
printf(" %08x %08x ", i, data.u32);
print_insn_sparc_sis(i, info);
if (i >= 0xfffffffc) break;
@@ -1023,7 +1027,7 @@ reset_all()
{
init_event(); /* Clear event queue */
init_regs(&sregs);
- reset();
+ ms->reset();
#ifdef ERRINJ
errinjstart();
#endif
@@ -1145,7 +1149,7 @@ bfd_load (const char *fname)
#ifdef HOST_LITTLE_ENDIAN
for (i = 0; i < (count / 4); i++) buffer.u32[i] = T2H_4(buffer.u32[i]); // endian swap
#endif
- sis_memory_write(section_address, buffer.u8, count);
+ ms->sis_memory_write(section_address, buffer.u8, count);
section_address += count;
fptr += count;
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 1686cc3..394b724 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -38,17 +38,13 @@
#define PSR_CWP 0x7
extern struct disassemble_info dinfo;
-extern struct pstate sregs;
extern struct estate ebase;
-extern int current_target_byte_order;
-extern int ctrl_c;
extern int nfp;
extern int ift;
extern int rom8;
extern int wrp;
extern int uben;
-extern int sis_verbose;
extern char *sis_version;
extern struct estate ebase;
extern struct evcell evbuf[];
@@ -73,7 +69,7 @@ run_sim(sregs, icount, dis)
if (sis_verbose)
(*sim_callback->printf_filtered) (sim_callback, "resuming at %x\n",
sregs->pc);
- init_stdio();
+ ms->init_stdio();
sregs->starttime = get_time();
irq = 0;
if ((sregs->pc != 0) && (ebase.simtime == 0))
@@ -94,7 +90,7 @@ run_sim(sregs, icount, dis)
if (sregs->pc == 0 || sregs->npc == 0)
printf ("bogus pc or npc\n");
#endif
- mexc = memory_iread (sregs->pc, &sregs->inst, &sregs->hold);
+ mexc = ms->memory_iread (sregs->pc, &sregs->inst, &sregs->hold);
#if 0 /* DELETE ME! for debugging purposes only */
if (sis_verbose > 2)
printf("pc %x, np %x, sp %x, fp %x, wm %x, cw %x, i %08x\n",
@@ -120,8 +116,8 @@ run_sim(sregs, icount, dis)
if (sis_verbose)
(*sim_callback->printf_filtered) (sim_callback,
"SW BP hit at %x\n", sregs->pc);
- sim_halt();
- restore_stdio();
+ ms->sim_halt();
+ ms->restore_stdio();
clearerr(stdin);
return (BPT_HIT);
} else
@@ -139,12 +135,12 @@ run_sim(sregs, icount, dis)
icount = 0;
}
}
- sim_halt();
+ ms->sim_halt();
sregs->tottime += get_time() - sregs->starttime;
- restore_stdio();
+ ms->restore_stdio();
clearerr(stdin);
if (sregs->err_mode)
- error_mode(sregs->pc);
+ ms->error_mode(sregs->pc);
if (sregs->err_mode)
return (ERROR);
if (sregs->bphit) {
@@ -274,7 +270,7 @@ sim_open (kind, callback, abfd, argv)
#endif
reset_all();
ebase.simtime = 0;
- init_sim();
+ ms->init_sim();
init_bpt(&sregs);
reset_stat(&sregs);
@@ -288,7 +284,7 @@ sim_close(sd, quitting)
int quitting;
{
- exit_sim();
+ ms->exit_sim();
fcntl(0, F_SETFL, termsave);
};
@@ -370,9 +366,9 @@ sim_write(sd, mem, buf, length)
for (i = 0; i < length; i += 4) {
ibuf[i] = T2H_4(ibufp[i]);
}
- return (sis_memory_write(mem, (char *) ibuf, length));
+ return (ms->sis_memory_write(mem, (char *) ibuf, length));
#else
- return (sis_memory_write(mem, buf, length));
+ return (ms->sis_memory_write(mem, buf, length));
#endif
}
@@ -387,7 +383,7 @@ sim_read(sd, mem, buf, length)
int *ibuf = (int *) buf;
int i, len;
- len = sis_memory_read(mem, buf, length);
+ len = ms->sis_memory_read(mem, buf, length);
if (length >= 4)
for (i = 0; i < length; i += 4) {
*ibuf = H2T_4(*ibuf);
@@ -395,7 +391,7 @@ sim_read(sd, mem, buf, length)
}
return (len);
#else
- return (sis_memory_read(mem, buf, length));
+ return (ms->sis_memory_read(mem, buf, length));
#endif
}
@@ -482,7 +478,7 @@ flush_windows ()
#endif
for (i = 0; i < 16; i++)
- memory_write (11, sp + 4 * i, &sregs.r[(win * 16 + 16 + i) & 0x7f], 2,
+ ms->memory_write (11, sp + 4 * i, &sregs.r[(win * 16 + 16 + i) & 0x7f], 2,
&ws);
if (win == cwp)
@@ -521,6 +517,13 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
return NULL;
}
+int
+sim_stop (SIM_DESC sd)
+{
+ ctrl_c = 1;
+ return 1;
+}
+
#if 0 /* FIXME: These shouldn't exist. */
int
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index 2623fc5..79757ae 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -43,16 +43,13 @@
#define HIST_LEN 64
extern struct disassemble_info dinfo;
-extern struct pstate sregs;
extern struct estate ebase;
-extern int ctrl_c;
extern int nfp;
extern int ift;
extern int wrp;
extern int rom8;
extern int uben;
-extern int sis_verbose;
extern char *sis_version;
extern struct estate ebase;
extern struct evcell evbuf[];
@@ -78,13 +75,13 @@ run_sim(sregs, icount, dis)
int irq, mexc, deb;
sregs->starttime = get_time();
- init_stdio();
+ ms->init_stdio();
if (sregs->err_mode) icount = 0;
deb = dis || sregs->histlen || sregs->bptnum;
irq = 0;
while (icount > 0) {
- mexc = memory_iread(sregs->pc, &sregs->inst, &sregs->hold);
+ mexc = ms->memory_iread(sregs->pc, &sregs->inst, &sregs->hold);
sregs->icnt = 1;
if (sregs->annul) {
sregs->annul = 0;
@@ -99,7 +96,7 @@ run_sim(sregs, icount, dis)
} else {
if (deb) {
if ((sregs->bphit = check_bpt(sregs)) != 0) {
- restore_stdio();
+ ms->restore_stdio();
return (BPT_HIT);
}
if (sregs->histlen) {
@@ -122,7 +119,7 @@ run_sim(sregs, icount, dis)
irq = 0;
sregs->err_mode = execute_trap(sregs);
if (sregs->err_mode) {
- error_mode(sregs->pc);
+ ms->error_mode(sregs->pc);
icount = 0;
}
}
@@ -134,7 +131,7 @@ run_sim(sregs, icount, dis)
}
}
sregs->tottime += get_time() - sregs->starttime;
- restore_stdio();
+ ms->restore_stdio();
if (sregs->err_mode)
return (ERROR);
if (ctrl_c) {
@@ -237,7 +234,7 @@ main(argc, argv)
ebase.simtime = 0;
reset_all();
init_bpt(&sregs);
- init_sim();
+ ms->init_sim();
if (lfile)
last_load_addr = bfd_load(argv[lfile]);
#ifdef STAT
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index 45a0cc6..36067ad 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -162,25 +162,12 @@ struct irqcell {
/* Prototypes */
/* erc32.c */
-extern void init_sim (void);
-extern void reset (void);
-extern void error_mode (uint32 pc);
-extern void sim_halt (void);
-extern void exit_sim (void);
-extern void init_stdio (void);
-extern void restore_stdio (void);
-extern int memory_iread (uint32 addr, uint32 *data, int32 *ws);
-extern int memory_read (int32 asi, uint32 addr, uint32 *data,
- int32 sz, int32 *ws);
-extern int memory_write (int32 asi, uint32 addr, uint32 *data,
- int32 sz, int32 *ws);
-extern int sis_memory_write (uint32 addr,
- const unsigned char *data, uint32 length);
-extern int sis_memory_read (uint32 addr, char *data,
- uint32 length);
+extern const struct memsys erc32sys;
/* func.c */
-extern struct pstate sregs;
+extern struct pstate sregs;
+extern int ctrl_c;
+extern int sis_verbose;
extern void set_regi (struct pstate *sregs, int32 reg,
uint32 rval);
extern void get_regi (struct pstate *sregs, int32 reg, char *buf);
@@ -206,6 +193,7 @@ extern int bfd_load (const char *fname);
extern double get_time (void);
extern int nouartrx;
extern host_callback *sim_callback;
+extern int current_target_byte_order;
extern int dumbio;
@@ -227,3 +215,24 @@ extern void set_fsr (uint32 fsr);
/* help.c */
extern void usage (void);
extern void gen_help (void);
+
+struct memsys {
+ void (*init_sim) (void);
+ void (*reset) (void);
+ void (*error_mode) (uint32 pc);
+ void (*sim_halt) (void);
+ void (*exit_sim) (void);
+ void (*init_stdio) (void);
+ void (*restore_stdio) (void);
+ int (*memory_iread) (uint32 addr, uint32 *data, int32 *ws);
+ int (*memory_read) (int32 asi, uint32 addr, uint32 *data,
+ int32 sz, int32 *ws);
+ int (*memory_write) (int32 asi, uint32 addr, uint32 *data,
+ int32 sz, int32 *ws);
+ int (*sis_memory_write) (uint32 addr,
+ const unsigned char *data, uint32 length);
+ int (*sis_memory_read) (uint32 addr, char *data,
+ uint32 length);
+};
+
+extern const struct memsys *ms;
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v4 09/13] sim/erc32: Add support for LEON3 processor emulation.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (2 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 07/13] sim/erc32: Access memory subsystem through struct memsys Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-17 21:03 ` [PATCH v4 06/13] sim/erc32: Use gdb callback for UART I/O when linked with gdb Jiri Gaisler
` (8 subsequent siblings)
12 siblings, 0 replies; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Added memory and I/O sub-system to emulate a LEON3 processor.
The cache and MMU are not emulated but enough functionallity
is provided to run any RTEMS and BCC compiled application.
The code is based on erc32.c and modified to emulate the
LEON3 address space and peripheral operations.
---
sim/erc32/Makefile.in | 2 +-
sim/erc32/README.leon3 | 53 +++
sim/erc32/README.sis | 81 ++--
sim/erc32/erc32.c | 48 ++-
sim/erc32/exec.c | 228 +++++++++--
sim/erc32/func.c | 57 +--
sim/erc32/grlib.c | 101 +++++
sim/erc32/grlib.h | 57 +++
sim/erc32/interf.c | 26 +-
sim/erc32/leon3.c | 1020 ++++++++++++++++++++++++++++++++++++++++++++++++
sim/erc32/sis.c | 22 +-
sim/erc32/sis.h | 49 ++-
12 files changed, 1610 insertions(+), 134 deletions(-)
create mode 100644 sim/erc32/README.leon3
create mode 100644 sim/erc32/grlib.c
create mode 100644 sim/erc32/grlib.h
create mode 100644 sim/erc32/leon3.c
diff --git a/sim/erc32/Makefile.in b/sim/erc32/Makefile.in
index e8a8f18..ae385fb 100644
--- a/sim/erc32/Makefile.in
+++ b/sim/erc32/Makefile.in
@@ -22,7 +22,7 @@ TERMCAP_LIB = @TERMCAP@
READLINE_LIB = @READLINE@
# `sis' doesn't need interf.o.
-SIS_OFILES = exec.o erc32.o func.o help.o float.o sim-main.o
+SIS_OFILES = exec.o erc32.o func.o help.o float.o sim-main.o leon3.o grlib.o
SIM_OBJS = $(SIS_OFILES) interf.o
SIM_RUN_OBJS = sis.o
diff --git a/sim/erc32/README.leon3 b/sim/erc32/README.leon3
new file mode 100644
index 0000000..f6701a5
--- /dev/null
+++ b/sim/erc32/README.leon3
@@ -0,0 +1,53 @@
+
+1. LEON3 emulation
+
+The file 'leon3.c' contains a model of simple LEON3 sub-system. It
+contains 16 Mbyte ROM and 16 Mbyte RAM. Standard peripherals
+such as interrupt controller, UART and timer are provided.
+The model can execute leon3 binaries that do not require an
+MMU.
+
+To start sis in Leon3 mode, add the -leon3 switch. In gdb,
+use 'target sim -leon3' .
+
+1.1 UART
+
+The UART emulates an APBUART and is located at address 0x80000100.
+The following registers are implemeted:
+
+- UART RX and TX register (0x80000100)
+- UART status register (0x80000104)
+
+The UART generates interrupt 3.
+
+1.2 Timer unit (GPTIMER)
+
+The GPTIMER programmable counter is emulated and located at
+address 0x80000300. It is configured with two timers and separate
+interrupts (8 and 9).
+
+1.3 Interrupt controller
+
+The IRQMP interrupt controller is implemented as described in the
+GRLIB IP manual, with the exception of the interrupt level register.
+Extended interrupts are not supported. The registers are located
+at address 0x80000200.
+
+1.5 Memory interface
+
+The following memory areas are valid for the Leon3 simulator:
+
+0x00000000 - 0x01000000 ROM (16 Mbyte, loaded at start-up)
+0x40000000 - 0x41000000 RAM (16 Mbyte, loaded at start-up)
+0x80000000 - 0x81000000 APB bus, including plug&play
+0xFFFFF000 - 0xFFFFFFFF AHB plug&play area
+
+Access to non-existing memory will result in a memory exception trap.
+
+1.8 Power-down mode
+
+The Leon3 power-down feature (%asr19) is supported. When power-down is
+entered, time is skipped forward until the next event in the event queue.
+However, if the simulator event queue is empty, power-down mode is not
+entered since no interrupt would be generated to exit from the mode. A
+Ctrl-C in the simulator window will exit the power-down mode.
diff --git a/sim/erc32/README.sis b/sim/erc32/README.sis
index b119f03..124e577 100644
--- a/sim/erc32/README.sis
+++ b/sim/erc32/README.sis
@@ -1,10 +1,10 @@
-SIS - Sparc Instruction Simulator README file (v2.0, 05-02-1996)
+SIS - Sparc Instruction Simulator README file (v2.8, 10-11-2014)
-------------------------------------------------------------------
1. Introduction
-The SIS is a SPARC V7 architecture simulator. It consist of two parts,
+The SIS is a SPARC V7/V8 architecture simulator. It consist of two parts,
the simulator core and a user defined memory module. The simulator
core executes the instructions while the memory module emulates memory
and peripherals.
@@ -13,28 +13,28 @@ and peripherals.
The simulator is started as follows:
-sis [-uart1 uart_device1] [-uart2 uart_device2]
+sis [-leon3] [-uart1 uart_device1] [-uart2 uart_device2]
[-nfp] [-freq frequency] [-c batch_file] [files]
-The default uart devices for SIS are /dev/ptypc and /dev/ptypd. The
--uart[1,2] switch can be used to connect the uarts to other devices.
-Use 'tip /dev/ttypc' to connect a terminal emulator to the uarts.
+By default, SIS emulates an ERC32 system. The -leon3 switch
+enables emulation of a LEON3 SOC system.
+
+The emulated console uart is connected to stdin/stdout. The -uart[1,2]
+switch can be used to connect the uarts to other devices.
+
The '-nfp' will disable the simulated FPU, so each FPU instruction will
generate a FPU disabled trap. The '-freq' switch can be used to define
which "frequency" the simulator runs at. This is used by the 'perf'
command to calculated the MIPS figure for a particular configuration.
-The give frequency must be an integer indicating the frequency in MHz.
+The frequency must be an integer indicating the frequency in MHz.
The -c option indicates that sis commands should be read from 'batch_file'
at startup.
-Files to be loaded must be in one of the supported formats (see INSTALLATION),
-and will be loaded into the simulated memory. The file formats are
-automatically recognised.
+Files to be loaded must be in one of the supported formats (elf, a.out, srec),
+and will be loaded into the simulated memory.
-The script 'startsim' will start the simulator in one xterm window and
-open a terminal emulator (tip) connected to the UART A in a second
-xterm window. Below is description of commands that are recognized by
+Below is description of commands that are recognized by
the simulator. The command-line is parsed using GNU readline. A command
history of 64 commands is maintained. Use the up/down arrows to recall
previous commands. For more details, see the readline documentation.
@@ -77,8 +77,8 @@ Prints the FPU registers
go <address> [inst_count]
The go command will set pc to <address> and npc to <address> + 4, and start
-execution. No other initialisation will be done. If inst_count is given,
-execution will stop after the specified number of instructions.
+execution. If inst_count is given, execution will stop after the specified
+number of instructions.
help
@@ -146,14 +146,20 @@ interpreted as 'cont'.
3. Simulator core
-The SIS emulates the behavior of the 90C601E and 90C602E sparc IU and
-FPU from Matra MHS. These are roughly equivalent to the Cypress C601
-and C602. The simulator is cycle true, i.e a simulator time is
-maintained and inremented according the IU and FPU instruction timing.
+In ERC32 mode, SIS emulates the behavior of the 90C601E and 90C602E
+sparc IU and FPU from Matra MHS. These are roughly equivalent to the
+Cypress C601 and C602. The simulator is cycle true, i.e a simulator time is
+maintained and incremented according the IU and FPU instruction timing.
The parallel execution between the IU and FPU is modelled, as well as
-stalls due to operand dependencies (FPU). The core interacts with the
-user-defined memory modules through a number of functions. The memory
-module must provide the following functions:
+stalls due to operand dependencies (FPU).
+
+In Leon3 mode, the core emulates the Leon3 SPARC V8 core from
+Gaisler Research. All SPARC V8 instructions are supported but
+emulation is not fully cycle-true as the cache is not emulated.
+
+The core interacts with the user-defined memory modules through
+a number of functions. The memory module must provide the following
+functions:
int memory_read(asi,addr,data,ws)
int asi;
@@ -272,7 +278,7 @@ See 'erc32.c' for examples on how to use events and interrupts.
5. Memory module
-The supplied memory module (erc32.c) emulates the functions of memory and
+The ERC32 memory module (erc32.c) emulates the functions of memory and
the MEC asic developed for the 90C601/2. It includes the following functions:
* UART A & B
@@ -284,28 +290,27 @@ the MEC asic developed for the 90C601/2. It includes the following functions:
* 512 Kbyte ROM
* 4 Mbyte RAM
-See README.erc32 on how the MEC functions are emulated. For a detailed MEC
-specification, look at the ERC32 home page at URL:
+See README.erc32 on how the MEC functions are emulated.
-http://www.estec.esa.nl/wsmwww/erc32
+The Leon3 memory module (leon3.c) emulates on-chip peripherals and
+external memory for a simple Leon3 system. The modules includes the
+following functions:
-6. Compile and linking programs
+* AHB and APB buses with plug&play
+* UART (APBUART)
+* Interrupt controller (IRQMP)
+* Timer unit with two timers (GPTIMER)
+* PROM/SRAM memory controller (SRCTRL)
+* 16 Mbyte PROM, 16 Mbyte SRAM
-The directory 'examples' contain some code fragments for SIS.
-The script gccx indicates how the native sunos gcc and linker can be used
-to produce executables for the simulator. To compile and link the provided
-'hello.c', type 'gccx hello.c'. This will build the executable 'hello'.
-Start the simulator by running 'startsim hello', and issue the command 'run.
-After the program is terminated, the IU will be force to error mode through
-a software trap and halt.
+See README.leon3 for further details on Leon3 emulation.
-The programs are linked with a start-up file, srt0.S. This file includes
-the traptable and window underflow/overflow trap routines.
+6. Compile and linking programs
7. IU and FPU instruction timing.
-The simulator provides cycle true simulation. The following table shows
-the emulated instruction timing for 90C601E & 90C602E:
+The simulator provides cycle true simulation for ERC32. The following table
+shows the emulated instruction timing for 90C601E & 90C602E:
Instructions Cycles
diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c
index 12e20a6..569ff89 100644
--- a/sim/erc32/erc32.c
+++ b/sim/erc32/erc32.c
@@ -1636,19 +1636,20 @@ memory_iread(uint32 addr, uint32 *data, int32 *ws)
}
static int
-memory_read(asi, addr, data, sz, ws)
- int32 asi;
+memory_read(addr, data, sz, ws)
uint32 addr;
uint32 *data;
int32 sz;
int32 *ws;
{
int32 mexc;
+ int32 asi;
#ifdef ERRINJ
if (errmec) {
if (sis_verbose)
printf("Inserted MEC error %d\n",errmec);
+ if (sregs.psr & 0x080) asi = 11; else asi = 10;
set_sfsr(errmec, addr, asi, 1);
if (errmec == 5) mecparerror();
if (errmec == 6) iucomperr();
@@ -1662,6 +1663,7 @@ memory_read(asi, addr, data, sz, ws)
*ws = mem_ramr_ws;
return (0);
} else if ((addr >= MEC_START) && (addr < MEC_END)) {
+ if (sregs.psr & 0x080) asi = 11; else asi = 10;
mexc = mec_read(addr, asi, data);
if (mexc) {
set_sfsr(MEC_ACC, addr, asi, 1);
@@ -1704,18 +1706,19 @@ memory_read(asi, addr, data, sz, ws)
if (sis_verbose)
printf ("Memory exception at %x (illegal address)\n", addr);
+ asi = (sregs.psr & 0x080) ? 11 : 10;
set_sfsr(UIMP_ACC, addr, asi, 1);
*ws = MEM_EX_WS;
return (1);
}
+memory_read_asi (int32 asi, uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ return(memory_read(addr, data, sz, ws));
+}
+
static int
-memory_write(asi, addr, data, sz, ws)
- int32 asi;
- uint32 addr;
- uint32 *data;
- int32 sz;
- int32 *ws;
+memory_write(uint32 addr, uint32 *data, int32 sz, int32 *ws)
{
uint32 byte_addr;
uint32 byte_mask;
@@ -1724,11 +1727,13 @@ memory_write(asi, addr, data, sz, ws)
int32 mexc;
int i;
int wphit[2];
+ int asi;
#ifdef ERRINJ
if (errmec) {
if (sis_verbose)
printf("Inserted MEC error %d\n",errmec);
+ if (sregs.psr & 0x080) asi = 11; else asi = 10;
set_sfsr(errmec, addr, asi, 0);
if (errmec == 5) mecparerror();
if (errmec == 6) iucomperr();
@@ -1741,6 +1746,7 @@ memory_write(asi, addr, data, sz, ws)
if (mem_accprot) {
waddr = (addr & 0x7fffff) >> 2;
+ if (sregs.psr & 0x080) asi = 11; else asi = 10;
for (i = 0; i < 2; i++)
wphit[i] =
(((asi == 0xa) && (mec_wpr[i] & 1)) ||
@@ -1764,6 +1770,7 @@ memory_write(asi, addr, data, sz, ws)
return (0);
} else if ((addr >= MEC_START) && (addr < MEC_END)) {
+ if (sregs.psr & 0x080) asi = 11; else asi = 10;
if ((sz != 2) || (asi != 0xb)) {
set_sfsr(MEC_ACC, addr, asi, 0);
*ws = MEM_EX_WS;
@@ -1820,10 +1827,22 @@ memory_write(asi, addr, data, sz, ws)
}
*ws = MEM_EX_WS;
+ asi = (sregs.psr & 0x080) ? 11 : 10;
set_sfsr(UIMP_ACC, addr, asi, 0);
return (1);
}
+static int
+memory_write_asi(asi, addr, data, sz, ws)
+ int32 asi;
+ uint32 addr;
+ uint32 *data;
+ int32 sz;
+ int32 *ws;
+{
+ return(memory_write(addr, data, sz, ws));
+}
+
static unsigned char *
get_mem_ptr(addr, size)
uint32 addr;
@@ -1867,6 +1886,12 @@ sis_memory_read(addr, data, length)
uint32 length;
{
char *mem;
+ int ws;
+
+ if (length == 4) {
+ memory_read(addr, data, length, &ws);
+ return(4);
+ }
if ((mem = get_mem_ptr(addr, length)) == ((char *) -1))
return (0);
@@ -1875,7 +1900,7 @@ sis_memory_read(addr, data, length)
return (length);
}
-void
+static void
boot_init (void)
{
mec_write(MEC_WCR, 0); /* zero waitstates */
@@ -1899,7 +1924,10 @@ const struct memsys erc32sys = {
restore_stdio,
memory_iread,
memory_read,
+ memory_read_asi,
memory_write,
+ memory_write_asi,
sis_memory_write,
- sis_memory_read
+ sis_memory_read,
+ boot_init
};
diff --git a/sim/erc32/exec.c b/sim/erc32/exec.c
index 2ee1118..5fc6f1b 100644
--- a/sim/erc32/exec.c
+++ b/sim/erc32/exec.c
@@ -1065,17 +1065,17 @@ dispatch_instruction (sregs)
*rdd = sregs->psr;
break;
case RDY:
- if (!sparclite)
+ if ((!sparclite) && (cputype != CPU_LEON3))
*rdd = sregs->y;
else {
int rs1_is_asr = (sregs->inst >> 14) & 0x1f;
if ( 0 == rs1_is_asr )
*rdd = sregs->y;
- else if ( 17 == rs1_is_asr )
+ else if ( 17 == rs1_is_asr ) {
*rdd = sregs->asr17;
+ }
else {
sregs->trap = TRAP_UNIMP;
- break;
}
}
break;
@@ -1121,13 +1121,19 @@ dispatch_instruction (sregs)
((rs1 ^ operand2) & 0xfffff000);
break;
case WRY:
- if (!sparclite)
+ if ((!sparclite) && (cputype != CPU_LEON3))
sregs->y = (rs1 ^ operand2);
else {
if ( 0 == rd )
sregs->y = (rs1 ^ operand2);
- else if ( 17 == rd )
- sregs->asr17 = (rs1 ^ operand2);
+ else if ( 17 == rd ) {
+ if (sparclite)
+ sregs->asr17 = (rs1 ^ operand2);
+ }
+ else if ( 19 == rd ) {
+ if (cputype == CPU_LEON3)
+ wait_for_irq();
+ }
else {
sregs->trap = TRAP_UNIMP;
break;
@@ -1227,6 +1233,32 @@ dispatch_instruction (sregs)
switch (op3) {
case LDDA:
if (!chk_asi(sregs, &asi, op3)) break;
+ if (address & 0x7) {
+ sregs->trap = TRAP_UNALI;
+ break;
+ }
+ if (rd & 1) {
+ rd &= 0x1e;
+ if (rd > 7)
+ rdd = &(sregs->r[(cwp + rd) & 0x7f]);
+ else
+ rdd = &(sregs->g[rd]);
+ }
+ mexc = ms->memory_read_asi(asi, address, ddata, 2, &ws);
+ sregs->hold += ws;
+ mexc |= ms->memory_read_asi(asi, address+4, &ddata[1], 2, &ws);
+ sregs->hold += ws;
+ sregs->icnt = T_LDD;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ } else {
+ rdd[0] = ddata[0];
+ rdd[1] = ddata[1];
+#ifdef STAT
+ sregs->nload++; /* Double load counts twice */
+#endif
+ }
+ break;
case LDD:
if (address & 0x7) {
sregs->trap = TRAP_UNALI;
@@ -1239,9 +1271,9 @@ dispatch_instruction (sregs)
else
rdd = &(sregs->g[rd]);
}
- mexc = ms->memory_read(asi, address, ddata, 2, &ws);
+ mexc = ms->memory_read(address, ddata, 2, &ws);
sregs->hold += ws;
- mexc |= ms->memory_read(asi, address+4, &ddata[1], 2, &ws);
+ mexc |= ms->memory_read(address+4, &ddata[1], 2, &ws);
sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
@@ -1257,12 +1289,24 @@ dispatch_instruction (sregs)
case LDA:
if (!chk_asi(sregs, &asi, op3)) break;
+ if (address & 0x3) {
+ sregs->trap = TRAP_UNALI;
+ break;
+ }
+ mexc = ms->memory_read_asi(asi, address, &data, 2, &ws);
+ sregs->hold += ws;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ } else {
+ *rdd = data;
+ }
+ break;
case LD:
if (address & 0x3) {
sregs->trap = TRAP_UNALI;
break;
}
- mexc = ms->memory_read(asi, address, &data, 2, &ws);
+ mexc = ms->memory_read(address, &data, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1272,8 +1316,27 @@ dispatch_instruction (sregs)
break;
case LDSTUBA:
if (!chk_asi(sregs, &asi, op3)) break;
+ mexc = ms->memory_read_asi(asi, address, &data, 0, &ws);
+ sregs->hold += ws;
+ sregs->icnt = T_LDST;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ break;
+ }
+ data = extract_byte(data, address);
+ *rdd = data;
+ data = 0x0ff;
+ mexc = ms->memory_write_asi(asi, address, &data, 0, &ws);
+ sregs->hold += ws;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ }
+#ifdef STAT
+ sregs->nload++;
+#endif
+ break;
case LDSTUB:
- mexc = ms->memory_read(asi, address, &data, 0, &ws);
+ mexc = ms->memory_read(address, &data, 0, &ws);
sregs->hold += ws;
sregs->icnt = T_LDST;
if (mexc) {
@@ -1283,7 +1346,7 @@ dispatch_instruction (sregs)
data = extract_byte(data, address);
*rdd = data;
data = 0x0ff;
- mexc = ms->memory_write(asi, address, &data, 0, &ws);
+ mexc = ms->memory_write(address, &data, 0, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1295,9 +1358,21 @@ dispatch_instruction (sregs)
case LDSBA:
case LDUBA:
if (!chk_asi(sregs, &asi, op3)) break;
+ mexc = ms->memory_read_asi(asi, address, &data, 0, &ws);
+ sregs->hold += ws;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ break;
+ }
+ if (op3 == LDSB)
+ data = extract_byte_signed(data, address);
+ else
+ data = extract_byte(data, address);
+ *rdd = data;
+ break;
case LDSB:
case LDUB:
- mexc = ms->memory_read(asi, address, &data, 0, &ws);
+ mexc = ms->memory_read(address, &data, 0, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1312,13 +1387,29 @@ dispatch_instruction (sregs)
case LDSHA:
case LDUHA:
if (!chk_asi(sregs, &asi, op3)) break;
+ if (address & 0x1) {
+ sregs->trap = TRAP_UNALI;
+ break;
+ }
+ mexc = ms->memory_read_asi(asi, address, &data, 1, &ws);
+ sregs->hold += ws;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ break;
+ }
+ if (op3 == LDSH)
+ data = extract_short_signed(data, address);
+ else
+ data = extract_short(data, address);
+ *rdd = data;
+ break;
case LDSH:
case LDUH:
if (address & 0x1) {
sregs->trap = TRAP_UNALI;
break;
}
- mexc = ms->memory_read(asi, address, &data, 1, &ws);
+ mexc = ms->memory_read(address, &data, 1, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1344,7 +1435,7 @@ dispatch_instruction (sregs)
(sregs->frs2 == rd))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = ms->memory_read(asi, address, &data, 2, &ws);
+ mexc = ms->memory_read(address, &data, 2, &ws);
sregs->hold += ws;
sregs->flrd = rd;
sregs->ltime = ebase.simtime + sregs->icnt + FLSTHOLD +
@@ -1370,9 +1461,9 @@ dispatch_instruction (sregs)
((sregs->frs2 >> 1) == (rd >> 1)))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = ms->memory_read(asi, address, ddata, 2, &ws);
+ mexc = ms->memory_read(address, ddata, 2, &ws);
sregs->hold += ws;
- mexc |= ms->memory_read(asi, address+4, &ddata[1], 2, &ws);
+ mexc |= ms->memory_read(address+4, &ddata[1], 2, &ws);
sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
@@ -1401,7 +1492,7 @@ dispatch_instruction (sregs)
sregs->trap = TRAP_UNALI;
break;
}
- mexc = ms->memory_read(asi, address, &data, 2, &ws);
+ mexc = ms->memory_read(address, &data, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1423,7 +1514,7 @@ dispatch_instruction (sregs)
if (ebase.simtime < sregs->ftime) {
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = ms->memory_write(asi, address, &sregs->fsr, 2, &ws);
+ mexc = ms->memory_write(address, &sregs->fsr, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1432,12 +1523,22 @@ dispatch_instruction (sregs)
case STA:
if (!chk_asi(sregs, &asi, op3)) break;
+ if (address & 0x3) {
+ sregs->trap = TRAP_UNALI;
+ break;
+ }
+ mexc = ms->memory_write_asi(asi, address, rdd, 2, &ws);
+ sregs->hold += ws;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ }
+ break;
case ST:
if (address & 0x3) {
sregs->trap = TRAP_UNALI;
break;
}
- mexc = ms->memory_write(asi, address, rdd, 2, &ws);
+ mexc = ms->memory_write(address, rdd, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1445,8 +1546,14 @@ dispatch_instruction (sregs)
break;
case STBA:
if (!chk_asi(sregs, &asi, op3)) break;
+ mexc = ms->memory_write_asi(asi, address, rdd, 0, &ws);
+ sregs->hold += ws;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ }
+ break;
case STB:
- mexc = ms->memory_write(asi, address, rdd, 0, &ws);
+ mexc = ms->memory_write(address, rdd, 0, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1454,6 +1561,28 @@ dispatch_instruction (sregs)
break;
case STDA:
if (!chk_asi(sregs, &asi, op3)) break;
+ if (address & 0x7) {
+ sregs->trap = TRAP_UNALI;
+ break;
+ }
+ if (rd & 1) {
+ rd &= 0x1e;
+ if (rd > 7)
+ rdd = &(sregs->r[(cwp + rd) & 0x7f]);
+ else
+ rdd = &(sregs->g[rd]);
+ }
+ mexc = ms->memory_write_asi(asi, address, rdd, 3, &ws);
+ sregs->hold += ws;
+ sregs->icnt = T_STD;
+#ifdef STAT
+ sregs->nstore++; /* Double store counts twice */
+#endif
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ break;
+ }
+ break;
case STD:
if (address & 0x7) {
sregs->trap = TRAP_UNALI;
@@ -1466,7 +1595,7 @@ dispatch_instruction (sregs)
else
rdd = &(sregs->g[rd]);
}
- mexc = ms->memory_write(asi, address, rdd, 3, &ws);
+ mexc = ms->memory_write(address, rdd, 3, &ws);
sregs->hold += ws;
sregs->icnt = T_STD;
#ifdef STAT
@@ -1495,7 +1624,7 @@ dispatch_instruction (sregs)
break;
}
rdd = &(sregs->fpq[0]);
- mexc = ms->memory_write(asi, address, rdd, 3, &ws);
+ mexc = ms->memory_write(address, rdd, 3, &ws);
sregs->hold += ws;
sregs->icnt = T_STD;
#ifdef STAT
@@ -1511,12 +1640,22 @@ dispatch_instruction (sregs)
break;
case STHA:
if (!chk_asi(sregs, &asi, op3)) break;
+ if (address & 0x1) {
+ sregs->trap = TRAP_UNALI;
+ break;
+ }
+ mexc = ms->memory_write_asi(asi, address, rdd, 1, &ws);
+ sregs->hold += ws;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ }
+ break;
case STH:
if (address & 0x1) {
sregs->trap = TRAP_UNALI;
break;
}
- mexc = ms->memory_write(asi, address, rdd, 1, &ws);
+ mexc = ms->memory_write(address, rdd, 1, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1535,7 +1674,7 @@ dispatch_instruction (sregs)
if (sregs->frd == rd)
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = ms->memory_write(asi, address, &sregs->fsi[rd], 2, &ws);
+ mexc = ms->memory_write(address, &sregs->fsi[rd], 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1555,7 +1694,7 @@ dispatch_instruction (sregs)
if ((sregs->frd == rd) || (sregs->frd + 1 == rd))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = ms->memory_write(asi, address, &sregs->fsi[rd], 3, &ws);
+ mexc = ms->memory_write(address, &sregs->fsi[rd], 3, &ws);
sregs->hold += ws;
sregs->icnt = T_STD;
#ifdef STAT
@@ -1567,18 +1706,40 @@ dispatch_instruction (sregs)
break;
case SWAPA:
if (!chk_asi(sregs, &asi, op3)) break;
+ if (address & 0x3) {
+ sregs->trap = TRAP_UNALI;
+ break;
+ }
+ mexc = ms->memory_read_asi(asi, address, &data, 2, &ws);
+ sregs->hold += ws;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ break;
+ }
+ mexc = ms->memory_write_asi(asi, address, rdd, 2, &ws);
+ sregs->hold += ws;
+ sregs->icnt = T_LDST;
+ if (mexc) {
+ sregs->trap = TRAP_DEXC;
+ break;
+ } else
+ *rdd = data;
+#ifdef STAT
+ sregs->nload++;
+#endif
+ break;
case SWAP:
if (address & 0x3) {
sregs->trap = TRAP_UNALI;
break;
}
- mexc = ms->memory_read(asi, address, &data, 2, &ws);
+ mexc = ms->memory_read(address, &data, 2, &ws);
sregs->hold += ws;
if (mexc) {
sregs->trap = TRAP_DEXC;
break;
}
- mexc = ms->memory_write(asi, address, rdd, 2, &ws);
+ mexc = ms->memory_write(address, rdd, 2, &ws);
sregs->hold += ws;
sregs->icnt = T_LDST;
if (mexc) {
@@ -1814,7 +1975,7 @@ fpexec(op3, rd, rs1, rs2, sregs)
sregs->ftime += T_FDIVd;
break;
case FMOVs:
- sregs->fs[rd] = sregs->fs[rs2];
+ sregs->fsi[rd] = sregs->fsi[rs2];
sregs->ftime += T_FMOVs;
sregs->frs1 = 32; /* rs1 ignored */
break;
@@ -1996,7 +2157,7 @@ execute_trap(sregs)
sregs->pc = sregs->tbr;
sregs->npc = sregs->tbr + 4;
- if ( 0 != (1 & sregs->asr17) ) {
+ if ( 0 != (1 & (sregs->asr17 >> 13)) ) {
/* single vector trapping! */
sregs->pc = sregs->tbr & 0xfffff000;
sregs->npc = sregs->pc + 4;
@@ -2043,7 +2204,10 @@ init_regs(sregs)
sregs->npc = 4;
sregs->trap = 0;
sregs->psr &= 0x00f03fdf;
- sregs->psr |= 0x11000080; /* Set supervisor bit */
+ if (cputype == CPU_LEON3)
+ sregs->psr |= 0xF3000080; /* Set supervisor bit */
+ else
+ sregs->psr |= 0x11000080; /* Set supervisor bit */
sregs->breakpoint = 0;
sregs->annul = 0;
sregs->fpstate = FP_EXE_MODE;
@@ -2072,4 +2236,8 @@ init_regs(sregs)
sregs->rett_err = 0;
sregs->jmpltime = 0;
+ if (cputype == CPU_LEON3) {
+ sregs->asr17 = 0x107;
+ if (!nfp) sregs->asr17 |= (3 << 10); /* Meiko FPU */
+ }
}
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 94493b8..ae740ec 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -47,7 +47,7 @@ struct irqcell irqarr[16];
int ctrl_c = 0;
int sis_verbose = 0;
-char *sis_version = "2.7.5";
+char *sis_version = "2.8";
int nfp = 0;
int ift = 0;
int wrp = 0;
@@ -62,6 +62,7 @@ uint32 last_load_addr = 0;
int nouartrx = 0;
host_callback *sim_callback;
const struct memsys *ms = &erc32sys;
+int cputype = 0; /* 0 = erc32, 3 = leon3 */
#ifdef ERRINJ
uint32 errcnt = 0;
@@ -482,7 +483,7 @@ exec_cmd(struct pstate *sregs, const char *cmd)
sregs->pc = len & ~3;
sregs->npc = sregs->pc + 4;
if ((sregs->pc != 0) && (ebase.simtime == 0))
- boot_init();
+ ms->boot_init();
printf("resuming at 0x%08x\n",sregs->pc);
if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) {
stat = run_sim(sregs, VAL(cmd2), 0);
@@ -558,6 +559,11 @@ exec_cmd(struct pstate *sregs, const char *cmd)
ebase.simtime = 0;
reset_all();
reset_stat(sregs);
+ if (last_load_addr != 0) {
+ sregs->pc = last_load_addr & ~3;
+ sregs->npc = sregs->pc + 4;
+ }
+ if ((sregs->pc != 0) && (ebase.simtime == 0)) ms->boot_init();
if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
stat = run_sim(sregs, UINT64_MAX, 0);
} else {
@@ -611,6 +617,11 @@ exec_cmd(struct pstate *sregs, const char *cmd)
ebase.simtime = 0;
reset_all();
reset_stat(sregs);
+ if (last_load_addr != 0) {
+ sregs->pc = last_load_addr & ~3;
+ sregs->npc = sregs->pc + 4;
+ }
+ if ((sregs->pc != 0) && (ebase.simtime == 0)) ms->boot_init();
sregs->tlimit = limcalc(sregs->freq);
stat = run_sim(sregs, UINT64_MAX, 0);
daddr = sregs->pc;
@@ -648,8 +659,8 @@ void
show_stat(sregs)
struct pstate *sregs;
{
- uint32 iinst;
- uint32 stime;
+ uint64 iinst;
+ uint64 stime;
if (sregs->tottime == 0.0)
sregs->tottime += 1E-6;
@@ -664,37 +675,37 @@ show_stat(sregs)
printf(" Instructions : %9" PRIu64 "\n", sregs->ninst);
#ifdef STAT
- printf(" integer : %9.2f %%\n", 100.0 * (float) iinst / (float) sregs->ninst);
+ printf(" integer : %9.2f %%\n", 100.0 * (double) iinst / (double) sregs->ninst);
printf(" load : %9.2f %%\n",
- 100.0 * (float) sregs->nload / (float) sregs->ninst);
+ 100.0 * (double) sregs->nload / (double) sregs->ninst);
printf(" store : %9.2f %%\n",
- 100.0 * (float) sregs->nstore / (float) sregs->ninst);
+ 100.0 * (double) sregs->nstore / (double) sregs->ninst);
printf(" branch : %9.2f %%\n",
- 100.0 * (float) sregs->nbranch / (float) sregs->ninst);
+ 100.0 * (double) sregs->nbranch / (double) sregs->ninst);
printf(" float : %9.2f %%\n",
- 100.0 * (float) sregs->finst / (float) sregs->ninst);
+ 100.0 * (double) sregs->finst / (double) sregs->ninst);
printf(" Integer CPI : %9.2f\n",
- ((float) (stime - sregs->pwdtime - sregs->fholdt - sregs->finst))
+ ((double) (stime - sregs->pwdtime - sregs->fholdt - sregs->finst))
/
- (float) (sregs->ninst - sregs->finst));
+ (double) (sregs->ninst - sregs->finst));
printf(" Float CPI : %9.2f\n",
- ((float) sregs->fholdt / (float) sregs->finst) + 1.0);
+ ((double) sregs->fholdt / (double) sregs->finst) + 1.0);
#endif
printf(" Overall CPI : %9.2f\n",
- (float) (stime - sregs->pwdtime) / (float) sregs->ninst);
- printf("\n ERC32 performance (%4.1f MHz): %5.2f MOPS (%5.2f MIPS, %5.2f MFLOPS)\n",
- sregs->freq, sregs->freq * (float) sregs->ninst / (float) (stime - sregs->pwdtime),
- sregs->freq * (float) (sregs->ninst - sregs->finst) /
- (float) (stime - sregs->pwdtime),
- sregs->freq * (float) sregs->finst / (float) (stime - sregs->pwdtime));
- printf(" Simulated ERC32 time : %.2f s\n",
- (float) (ebase.simtime - sregs->simstart) / 1000000.0 / sregs->freq);
+ (double) (stime - sregs->pwdtime) / (double) sregs->ninst);
+ printf("\n CPU performance (%4.1f MHz) : %5.2f MOPS (%5.2f MIPS, %5.2f MFLOPS)\n",
+ sregs->freq, sregs->freq * (double) sregs->ninst / (double) (stime - sregs->pwdtime),
+ sregs->freq * (double) (sregs->ninst - sregs->finst) /
+ (double) (stime - sregs->pwdtime),
+ sregs->freq * (double) sregs->finst / (double) (stime - sregs->pwdtime));
+ printf(" Simulated CPU time : %.2f s\n",
+ (double) (ebase.simtime - sregs->simstart) / 1000000.0 / sregs->freq);
printf(" Processor utilisation : %.2f %%\n",
- 100.0 * (1.0 - ((float) sregs->pwdtime / (float) stime)));
+ 100.0 * (1.0 - ((double) sregs->pwdtime / (double) stime)));
printf(" Real-time performance : %.2f %%\n",
- 100.0 / (sregs->tottime / ((double) (stime) / (sregs->freq * 1.0E6))));
+ 100.0 / (sregs->tottime / ((double) (stime) / (sregs->freq * 1.0E6))));
printf(" Simulator performance : %.2f MIPS\n",
- (double)(sregs->ninst) / sregs->tottime / 1E6);
+ (double)(sregs->ninst) / sregs->tottime / 1E6);
printf(" Used time (sys + user) : %.2f s\n\n", sregs->tottime);
}
diff --git a/sim/erc32/grlib.c b/sim/erc32/grlib.c
new file mode 100644
index 0000000..acd9d9d
--- /dev/null
+++ b/sim/erc32/grlib.c
@@ -0,0 +1,101 @@
+/*
+ * This file is part of SIS.
+ *
+ * SIS, SPARC instruction simulator. Copyright (C) 2014 Jiri Gaisler
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#include "sis.h"
+#include "grlib.h"
+
+
+/* APB PNP */
+
+static uint32 apbppmem[32 * 2]; /* 32-entry APB PP AREA */
+static int apbppindex;
+
+int grlib_apbpp_add(uint32 id, uint32 addr)
+{
+ apbppmem[apbppindex++] = id;
+ apbppmem[apbppindex++] = addr;
+ if(apbppindex >= (32 * 2))
+ apbppindex = 0; /* prevent overflow of area */
+ return apbppindex;
+}
+
+uint32 grlib_apbpnp_read(uint32 addr)
+{
+ uint32 read_data;
+ addr &= 0xff;
+ read_data = apbppmem[addr >> 2];
+
+ return read_data;
+}
+
+/* AHB PNP */
+
+static uint32 ahbppmem[128*8]; /* 128-entry AHB PP AREA */
+static int ahbmppindex;
+static int ahbsppindex = 64*8;
+
+int grlib_ahbmpp_add(uint32 id)
+{
+ ahbppmem[ahbmppindex] = id;
+ ahbmppindex += 8;
+ if(ahbmppindex >= (64 * 8))
+ ahbmppindex = 0; /* prevent overflow of area */
+ return ahbmppindex;
+}
+
+int grlib_ahbspp_add(uint32 id, uint32 addr1, uint32 addr2,
+ uint32 addr3, uint32 addr4)
+{
+ ahbppmem[ahbsppindex] = id;
+ ahbsppindex += 4;
+ ahbppmem[ahbsppindex++] = addr1;
+ ahbppmem[ahbsppindex++] = addr2;
+ ahbppmem[ahbsppindex++] = addr3;
+ ahbppmem[ahbsppindex++] = addr4;
+ if(ahbsppindex >= (128 * 8))
+ ahbsppindex = 64 * 8; /* prevent overflow of area */
+ return ahbsppindex;
+}
+
+uint32 grlib_ahbpnp_read(uint32 addr)
+{
+ uint32 read_data;
+
+ addr &= 0xfff;
+ read_data = ahbppmem[addr >> 2];
+ return read_data;
+
+}
+
+void grlib_init()
+{
+ /* Add PP records for Leon3, APB bridge and interrupt controller
+ as this is not done elsewhere */
+
+ grlib_ahbmpp_add(GRLIB_PP_ID(VENDOR_GAISLER, GAISLER_LEON3, 0, 0));
+ grlib_ahbspp_add(GRLIB_PP_ID(VENDOR_GAISLER, GAISLER_APBMST, 0, 0),
+ GRLIB_PP_AHBADDR(0x80000000, 0xFFF, 0, 0, 2),
+ 0, 0, 0);
+
+ grlib_apbpp_add(GRLIB_PP_ID(VENDOR_GAISLER, GAISLER_IRQMP, 2, 0),
+ GRLIB_PP_APBADDR(0x80000200, 0xFFF));
+
+}
diff --git a/sim/erc32/grlib.h b/sim/erc32/grlib.h
new file mode 100644
index 0000000..1c03329
--- /dev/null
+++ b/sim/erc32/grlib.h
@@ -0,0 +1,57 @@
+/*
+ * This file is part of SIS.
+ *
+ * SIS, SPARC instruction simulator. Copyright (C) 2014 Jiri Gaisler
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+/* Definitions for AMBA PNP in Gaisler Research GRLIB SOC */
+
+/* Vendors */
+#define VENDOR_GAISLER 1
+#define VENDOR_PENDER 2
+#define VENDOR_ESA 4
+#define VENDOR_DLR 10
+
+/* Devices */
+#define GAISLER_LEON3 0x003
+#define GAISLER_APBMST 0x006
+#define GAISLER_SRCTRL 0x008
+#define GAISLER_APBUART 0x00C
+#define GAISLER_IRQMP 0x00D
+#define GAISLER_GPTIMER 0x011
+#define ESA_MCTRL 0x00F
+
+/* How to build entries in the plug&play area */
+#define GRLIB_PP_ID(v, d, x, i) ((v & 0xff) << 24) | ((d & 0x3ff) << 12) |\
+ ((x & 0x1f) << 5) | (i & 0x1f)
+#define GRLIB_PP_AHBADDR(a, m, p, c, t) (a & 0xfff00000) | ((m & 0xfff) << 4) |\
+ ((p & 1) << 17) | ((c & 1) << 16) | (t & 0x3)
+#define GRLIB_PP_APBADDR(a, m) ((a & 0xfff00)<< 12) | ((m & 0xfff) << 4) | 1
+
+#define AHBPP_START 0xFFFFF000
+#define AHBPP_END 0xFFFFFFFF
+#define APBPP_START 0x800FF000
+#define APBPP_END 0x800FFFFF
+
+int grlib_apbpp_add(uint32 id, uint32 addr);
+int grlib_ahbmpp_add(uint32 id);
+int grlib_ahbspp_add(uint32 id, uint32 addr1, uint32 addr2,
+ uint32 addr3, uint32 addr4);
+uint32 grlib_ahbpnp_read(uint32 addr);
+uint32 grlib_apbpnp_read(uint32 addr);
+void grlib_init();
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 3d827ff..1e6ab7b 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -54,7 +54,7 @@ run_sim(sregs, icount, dis)
sregs->starttime = get_time();
irq = 0;
if ((sregs->pc != 0) && (ebase.simtime == 0))
- boot_init();
+ ms->boot_init();
while (!sregs->err_mode & (icount > 0)) {
sregs->fhold = 0;
@@ -189,6 +189,10 @@ sim_open (kind, callback, abfd, argv)
if (strcmp(argv[stat], "-nouartrx") == 0) {
nouartrx = 1;
} else
+ if (strcmp(argv[stat], "-leon3") == 0) {
+ ms = &leon3;
+ cputype = CPU_LEON3;
+ } else
if (strcmp(argv[stat], "-wrp") == 0) {
wrp = 1;
} else
@@ -226,9 +230,21 @@ sim_open (kind, callback, abfd, argv)
stat++;
}
+ if (cputype == CPU_LEON3)
+ sregs.freq = freq ? freq : 50;
+ else
+ sregs.freq = freq ? freq : 14;
+
if (sis_verbose) {
(*sim_callback->printf_filtered) (sim_callback, "\n SIS - SPARC instruction simulator %s\n", sis_version);
- (*sim_callback->printf_filtered) (sim_callback, " Bug-reports to Jiri Gaisler ESA/ESTEC (jgais@wd.estec.esa.nl)\n");
+ (*sim_callback->printf_filtered) (sim_callback, " Bug-reports to Jiri Gaisler ESA/ESTEC (jiri@gaisler.se)\n\n");
+ switch (cputype) {
+ case CPU_LEON3:
+ (*sim_callback->printf_filtered) (sim_callback, "LEON3 emulation enabled\n");
+ break;
+ default:
+ (*sim_callback->printf_filtered) (sim_callback, "ERC32 emulation enabled\n");
+ }
if (nfp)
(*sim_callback->printf_filtered) (sim_callback, "no FPU\n");
if (sparclite)
@@ -237,11 +253,9 @@ sim_open (kind, callback, abfd, argv)
(*sim_callback->printf_filtered) (sim_callback, "dumb IO (no input, dumb output)\n");
if (sis_gdb_break == 0)
(*sim_callback->printf_filtered) (sim_callback, "disabling GDB trap handling for breakpoints\n");
- if (freq)
- (*sim_callback->printf_filtered) (sim_callback, " ERC32 freq %d Mhz\n", freq);
+ (*sim_callback->printf_filtered) (sim_callback, "CPU freq %3.1f MHz\n", sregs.freq);
}
- sregs.freq = freq ? freq : 15;
termsave = fcntl(0, F_GETFL, 0);
INIT_DISASSEMBLE_INFO(dinfo, stdout,(fprintf_ftype)fprintf);
#ifdef HOST_LITTLE_ENDIAN
@@ -459,7 +473,7 @@ flush_windows ()
#endif
for (i = 0; i < 16; i++)
- ms->memory_write (11, sp + 4 * i, &sregs.r[(win * 16 + 16 + i) & 0x7f], 2,
+ ms->memory_write (sp + 4 * i, &sregs.r[(win * 16 + 16 + i) & 0x7f], 2,
&ws);
if (win == cwp)
diff --git a/sim/erc32/leon3.c b/sim/erc32/leon3.c
new file mode 100644
index 0000000..4510f5b
--- /dev/null
+++ b/sim/erc32/leon3.c
@@ -0,0 +1,1020 @@
+/*
+ * This file is part of SIS.
+ *
+ * SIS, SPARC instruction simulator V2.5 Copyright (C) 1995 Jiri Gaisler,
+ * European Space Agency
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Leon3 emulation, loosely based on erc32.c.
+ */
+
+/* The control space devices. */
+
+#include "config.h"
+#include <errno.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+#include <termios.h>
+#include <sys/fcntl.h>
+#include <sys/file.h>
+#include <unistd.h>
+#include "sis.h"
+#include "grlib.h"
+#include "sim-config.h"
+
+static int tty_setup = 1;
+
+/* APB registers */
+#define APBSTART 0x80000000
+#define APBEND 0x80100000
+
+/* Memory exception waitstates. */
+#define MEM_EX_WS 1
+
+#define MOK 0
+
+/* LEON3 APB register addresses. */
+
+#define IRQMP_IPR 0x204
+#define IRQMP_IMR 0x240
+#define IRQMP_ICR 0x20C
+#define IRQMP_IFR 0x208
+#define GPTIMER_SCALER 0x300
+#define GPTIMER_SCLOAD 0x304
+#define GPTIMER_CONFIG 0x308
+#define GPTIMER_TIMER1 0x310
+#define GPTIMER_RELOAD1 0x314
+#define GPTIMER_CTRL1 0x318
+#define GPTIMER_TIMER2 0x320
+#define GPTIMER_RELOAD2 0x324
+#define GPTIMER_CTRL2 0x328
+
+#define APBUART_RXTX 0x100
+#define APBUART_STATUS 0x104
+
+/* Size of UART buffers (bytes). */
+#define UARTBUF 1024
+
+/* Number of simulator ticks between flushing the UARTS. */
+/* For good performance, keep above 1000. */
+#define UART_FLUSH_TIME 3000
+
+/* New uart defines. */
+#define UART_TX_TIME 1000
+#define UART_RX_TIME 1000
+#define UARTA_DR 0x1
+#define UARTA_SRE 0x2
+#define UARTA_HRE 0x4
+#define UARTA_OR 0x10
+
+/* IRQMP registers. */
+
+static uint32 irqmp_ipr;
+static uint32 irqmp_imr;
+static uint32 irqmp_ifr;
+
+/* GPTIMER registers. */
+
+#define NGPTIMERS 2
+#define GPTIMER_IRQ 8
+
+static uint32 gpt_scaler;
+static uint32 gpt_scaler_start;
+static uint32 gpt_counter[NGPTIMERS];
+static uint32 gpt_reload[NGPTIMERS];
+static uint32 gpt_ctrl[NGPTIMERS];
+
+/* ROM size 16 Mbyte. */
+#define ROM_START 0x00000000
+#define ROM_MASK 0x00ffffff
+#define ROM_END (ROM_START + ROM_MASK + 1)
+
+/* RAM size 16 Mbyte. */
+#define RAM_START 0x40000000
+#define RAM_MASK 0x00ffffff
+#define RAM_END (RAM_START + RAM_MASK + 1)
+
+/* Memory. */
+static unsigned char romb[ROM_END - ROM_START];
+static unsigned char ramb[RAM_END - RAM_START];
+static uint32 cache_ctrl;
+
+
+/* UART support variables. */
+
+/* File descriptor for input file. */
+static int32 fd1, fd2;
+
+/* UART status register */
+static int32 Ucontrol;
+
+static unsigned char aq[UARTBUF], bq[UARTBUF];
+static int32 anum, aind = 0;
+static int32 bnum, bind = 0;
+static char wbufa[UARTBUF], wbufb[UARTBUF];
+static unsigned wnuma;
+static unsigned wnumb;
+static FILE *f1in, *f1out;
+static struct termios ioc1, ioc2, iocold1, iocold2;
+static int f1open = 0;
+
+static char uarta_sreg, uarta_hreg;
+static uint32 uart_stat_reg;
+static uint32 uarta_data;
+
+/* Forward declarations. */
+
+static void mem_init (void);
+static void close_port (void);
+static void leon3_reset (void);
+static void irqmp_intack (int32 level);
+static void chk_irq (void);
+static void set_irq (int32 level);
+static int32 apb_read (uint32 addr, uint32 *data);
+static int apb_write (uint32 addr, uint32 data);
+static void port_init (void);
+static uint32 grlib_read_uart (uint32 addr);
+static void grlib_write_uart (uint32 addr, uint32 data);
+static void flush_uart (void);
+static void uarta_tx (void);
+static void uart_rx (caddr_t arg);
+static void uart_intr (caddr_t arg);
+static void uart_irq_start (void);
+static void gpt_intr (caddr_t arg);
+static void gpt_init (void);
+static void gpt_reset (void);
+static void gpt_scaler_set (uint32 val);
+static void timer_ctrl (uint32 val, int i);
+static unsigned char *
+ get_mem_ptr (uint32 addr, uint32 size);
+static void store_bytes (unsigned char *mem, uint32 waddr,
+ uint32 *data, int sz, int32 *ws);
+
+static host_callback *callback;
+
+
+/* One-time init. */
+
+static void
+init_sim(void)
+{
+ callback = sim_callback;
+ grlib_init();
+ mem_init();
+ port_init();
+ gpt_init();
+}
+
+/* Power-on reset init. */
+
+static void
+reset(void)
+{
+ leon3_reset();
+ uart_irq_start();
+ gpt_reset();
+}
+
+/* IU error mode manager. */
+
+static void
+error_mode(uint32 pc)
+{
+
+}
+
+
+/* Memory init. */
+
+static void
+mem_init(void)
+{
+
+/* Add AMBA P&P record for SRCTRL memory controller */
+
+ grlib_ahbspp_add(GRLIB_PP_ID(VENDOR_GAISLER, GAISLER_SRCTRL, 0, 0),
+ GRLIB_PP_AHBADDR(0x00000000, 0xE00, 1, 1, 2),
+ GRLIB_PP_AHBADDR(0x40000000, 0xC00, 1, 1, 2),
+ GRLIB_PP_AHBADDR(0x20000000, 0xE00, 0, 0, 2),
+ 0);
+ if (sis_verbose)
+ printf("RAM start: 0x%x, RAM size: %d K, ROM size: %d K\n",
+ RAM_START, (RAM_MASK+1)/1024, (ROM_MASK+1)/1024);
+}
+
+/* Flush ports when simulator stops. */
+
+static void
+sim_halt(void)
+{
+#ifdef FAST_UART
+ flush_uart();
+#endif
+}
+
+static void
+close_port(void)
+{
+ if (f1open && f1in != stdin)
+ fclose(f1in);
+}
+
+static void
+exit_sim(void)
+{
+ close_port();
+}
+
+static void
+leon3_reset(void)
+{
+ int i;
+
+ irqmp_ipr = 0;
+ irqmp_imr = 0;
+ irqmp_ifr = 0;
+
+ wnuma = wnumb = 0;
+ anum = aind = bnum = bind = 0;
+
+ uart_stat_reg = UARTA_SRE | UARTA_HRE;
+
+ gpt_counter[0] = 0xffffffff;
+ gpt_reload[0] = 0xffffffff;
+ gpt_scaler = 0xffff;
+ gpt_ctrl[0] = 0;
+ gpt_ctrl[1] = 0;
+
+}
+
+static void
+irqmp_intack(int32 level)
+{
+ int irq_test;
+
+ if (sis_verbose > 2)
+ printf("interrupt %d acknowledged\n", level);
+ if (irqmp_ifr & (1 << level))
+ irqmp_ifr &= ~(1 << level);
+ else
+ irqmp_ipr &= ~(1 << level);
+ chk_irq();
+}
+
+static void
+chk_irq(void)
+{
+ int32 i;
+ uint32 itmp;
+ int old_irl;
+
+ old_irl = ext_irl;
+ itmp = ((irqmp_ipr | irqmp_ifr) & irqmp_imr) & 0x0fffe;
+ ext_irl = 0;
+ if (itmp != 0) {
+ for (i = 15; i > 0; i--) {
+ if (((itmp >> i) & 1) != 0) {
+ if ((sis_verbose > 2) && (i > old_irl))
+ printf("IU irl: %d\n", i);
+ ext_irl = i;
+ set_int(i, irqmp_intack, i);
+ break;
+ }
+ }
+ }
+}
+
+static void
+set_irq(int32 level)
+{
+ irqmp_ipr |= (1 << level);
+ chk_irq();
+}
+
+static int32
+apb_read(uint32 addr, uint32 *data)
+{
+
+ switch (addr & 0xfff) {
+
+ case APBUART_RXTX: /* 0x100 */
+ case APBUART_STATUS: /* 0x104 */
+ *data = grlib_read_uart(addr);
+ break;
+
+ case IRQMP_IPR: /* 0x204 */
+ *data = irqmp_ipr;
+ break;
+
+ case IRQMP_IFR: /* 0x208 */
+ *data = irqmp_ifr;
+ break;
+
+ case IRQMP_IMR: /* 0x240 */
+ *data = irqmp_imr;
+ break;
+
+ case GPTIMER_SCALER: /* 0x300 */
+ *data = gpt_scaler - (now() - gpt_scaler_start);
+ break;
+
+ case GPTIMER_SCLOAD: /* 0x304 */
+ *data = gpt_scaler;
+ break;
+
+ case GPTIMER_CONFIG: /* 0x308 */
+ *data = 0x100 | (GPTIMER_IRQ << 3) | NGPTIMERS;
+ break;
+
+ case GPTIMER_TIMER1: /* 0x310 */
+ *data = gpt_counter[0];
+ break;
+
+ case GPTIMER_RELOAD1: /* 0x314 */
+ *data = gpt_reload[0];
+ break;
+
+ case GPTIMER_CTRL1: /* 0x318 */
+ *data = gpt_ctrl[0];
+ break;
+
+ case GPTIMER_TIMER2: /* 0x320 */
+ *data = gpt_counter[1];
+ break;
+
+ case GPTIMER_RELOAD2: /* 0x324 */
+ *data = gpt_reload[1];
+ break;
+
+ case GPTIMER_CTRL2: /* 0x328 */
+ *data = gpt_ctrl[1];
+ break;
+
+ default:
+ *data = 0;
+ break;
+ }
+
+ if (sis_verbose > 1)
+ printf("APB read a: %08x, d: %08x\n", addr, *data);
+
+ return MOK;
+}
+
+static int
+apb_write(uint32 addr, uint32 data)
+{
+ if (sis_verbose > 1)
+ printf("APB write a: %08x, d: %08x\n",addr,data);
+ switch (addr & 0xfff) {
+
+ case APBUART_RXTX: /* 0x100 */
+ case APBUART_STATUS: /* 0x104 */
+ grlib_write_uart(addr, data);
+ break;
+
+ case IRQMP_IFR: /* 0x208 */
+ irqmp_ifr = data & 0xfffe;
+ chk_irq();
+ break;
+
+ case IRQMP_ICR: /* 0x20C */
+ irqmp_ipr &= ~data & 0x0fffe;
+ chk_irq();
+ break;
+
+ case IRQMP_IMR: /* 0x240 */
+ irqmp_imr = data & 0x7ffe;
+ chk_irq();
+ break;
+
+ case GPTIMER_SCLOAD: /* 0x304 */
+ gpt_scaler_set(data);
+ break;
+
+ case GPTIMER_TIMER1: /* 0x310 */
+ gpt_counter[0] = data;
+ break;
+
+ case GPTIMER_RELOAD1: /* 0x314 */
+ gpt_reload[0] = data;
+ break;
+
+ case GPTIMER_CTRL1: /* 0x318 */
+ timer_ctrl(data, 0);
+ break;
+
+ case GPTIMER_TIMER2: /* 0x320 */
+ gpt_counter[1] = data;
+ break;
+
+ case GPTIMER_RELOAD2: /* 0x324 */
+ gpt_reload[1] = data;
+ break;
+
+ case GPTIMER_CTRL2: /* 0x328 */
+ timer_ctrl(data, 1);
+ break;
+
+ default:
+ break;
+ }
+ return MOK;
+}
+
+
+/* APBUART. */
+
+static int ifd1 = -1, ofd1 = -1;
+
+static void
+init_stdio(void)
+{
+ if (dumbio)
+ return;
+ if (ifd1 == 0 && f1open) {
+ tcsetattr(0, TCSANOW, &ioc1);
+ tcflush(ifd1, TCIFLUSH);
+ }
+}
+
+static void
+restore_stdio(void)
+{
+ if (dumbio)
+ return;
+ if (ifd1 == 0 && f1open && tty_setup)
+ tcsetattr(0, TCSANOW, &iocold1);
+}
+
+#define DO_STDIO_READ( _fd_, _buf_, _len_ ) \
+ ( dumbio || nouartrx \
+ ? (0) /* no bytes read, no delay */ \
+ : (_fd_) == 1 && callback ? \
+ callback->read_stdin (callback, _buf_, _len_) : \
+ read( _fd_, _buf_, _len_ ) )
+
+
+static void
+port_init(void)
+{
+
+ f1in = stdin;
+ f1out = stdout;
+ if (uart_dev1[0] != 0)
+ if ((fd1 = open(uart_dev1, O_RDWR | O_NONBLOCK)) < 0) {
+ printf("Warning, couldn't open output device %s\n", uart_dev1);
+ } else {
+ if (sis_verbose)
+ printf("serial port A on %s\n", uart_dev1);
+ f1in = f1out = fdopen(fd1, "r+");
+ setbuf(f1out, NULL);
+ f1open = 1;
+ }
+ if (f1in)
+ ifd1 = fileno(f1in);
+ if (ifd1 == 0) {
+ if (callback && !callback->isatty(callback, ifd1)) {
+ tty_setup = 0;
+ }
+ if (sis_verbose)
+ printf("serial port A on stdin/stdout\n");
+ if (!dumbio) {
+ tcgetattr(ifd1, &ioc1);
+ if (tty_setup) {
+ iocold1 = ioc1;
+ ioc1.c_lflag &= ~(ICANON | ECHO);
+ ioc1.c_cc[VMIN] = 0;
+ ioc1.c_cc[VTIME] = 0;
+ }
+ }
+ f1open = 1;
+ }
+
+ if (f1out) {
+ ofd1 = fileno(f1out);
+ if (!dumbio && tty_setup && ofd1 == 1)
+ setbuf(f1out, NULL);
+ }
+
+ wnuma = 0;
+
+
+ grlib_apbpp_add(GRLIB_PP_ID(VENDOR_GAISLER, GAISLER_APBUART, 1, 3),
+ GRLIB_PP_APBADDR(0x80000100, 0xFFF));
+}
+
+static uint32
+grlib_read_uart(uint32 addr)
+{
+
+ unsigned tmp;
+
+ tmp = 0;
+ switch (addr & 0xff) {
+
+ case 0x00: /* UART 1 RX/TX */
+#ifndef _WIN32
+#ifdef FAST_UART
+
+ if (aind < anum) {
+ if ((aind + 1) < anum)
+ set_irq(3);
+ return (uint32) aq[aind++];
+ } else {
+ if (f1open) {
+ anum = DO_STDIO_READ(ifd1, aq, UARTBUF);
+ }
+ else {
+ anum = 0;
+ }
+ if (anum > 0) {
+ aind = 0;
+ if ((aind + 1) < anum)
+ set_irq(3);
+ return (uint32) aq[aind++];
+ } else {
+ return (uint32) aq[aind];
+ }
+
+ }
+#else
+ tmp = uarta_data;
+ uarta_data &= ~UART_DR;
+ uart_stat_reg &= ~UARTA_DR;
+ return tmp;
+#endif
+#else
+ return 0;
+#endif
+ break;
+
+ case 0x04: /* UART status register */
+#ifndef _WIN32
+#ifdef FAST_UART
+
+ Ucontrol = 0;
+ if (aind < anum) {
+ Ucontrol |= 0x00000001;
+ } else {
+ if (f1open) {
+ anum = DO_STDIO_READ(ifd1, aq, UARTBUF);
+ }
+ else {
+ anum = 0;
+ }
+ if (anum > 0) {
+ Ucontrol |= 0x00000001;
+ aind = 0;
+ set_irq(3);
+ }
+ }
+ Ucontrol |= 0x00000006;
+ return Ucontrol;
+#else
+ return uart_stat_reg;
+#endif
+#else
+ return 0x00060006;
+#endif
+ break;
+ default:
+ if (sis_verbose)
+ printf("Read from unimplemented UART register (%x)\n", addr);
+
+ }
+ return 0;
+}
+
+static void
+grlib_write_uart(uint32 addr, uint32 data)
+{
+ unsigned char c;
+
+ c = (unsigned char) data;
+ switch (addr & 0xff) {
+
+ case 0x00: /* UART A */
+#ifdef FAST_UART
+ if (f1open) {
+ if (wnuma < UARTBUF)
+ wbufa[wnuma++] = c;
+ else {
+ while (wnuma) {
+ if (ofd1 == 1 && callback)
+ wnuma -= callback->write_stdout(callback, wbufa, wnuma);
+ else
+ wnuma -= fwrite(wbufa, 1, wnuma, f1out);
+ }
+ wbufa[wnuma++] = c;
+ }
+ }
+ set_irq(3);
+#else
+ if (uart_stat_reg & UARTA_SRE) {
+ uarta_sreg = c;
+ uart_stat_reg &= ~UARTA_SRE;
+ event(uarta_tx, 0, UART_TX_TIME);
+ } else {
+ uarta_hreg = c;
+ uart_stat_reg &= ~UARTA_HRE;
+ }
+#endif
+ break;
+
+ case 0x04: /* UART status register */
+#ifndef FAST_UART
+ uart_stat_reg &= 1;
+#endif
+ break;
+ default:
+ if (sis_verbose)
+ printf("Write to unimplemented UART register (%x)\n", addr);
+
+ }
+}
+
+static void
+flush_uart(void)
+{
+ while (wnuma && f1open) {
+ if (ofd1 == 1 && callback) {
+ wnuma -= callback->write_stdout(callback, wbufa, wnuma);
+ callback->flush_stdout(callback);
+ }
+ else
+ wnuma -= fwrite(wbufa, 1, wnuma, f1out);
+ }
+}
+
+
+
+static void
+uarta_tx(void)
+{
+ while (f1open) {
+ if (ofd1 == 1 && callback) {
+ while (callback->write_stdout(callback, &uarta_sreg, 1) != 1);
+ }
+ else {
+ while (fwrite(&uarta_sreg, 1, 1, f1out) != 1);
+ }
+ }
+ if (uart_stat_reg & UARTA_HRE) {
+ uart_stat_reg |= UARTA_SRE;
+ } else {
+ uarta_sreg = uarta_hreg;
+ uart_stat_reg |= UARTA_HRE;
+ event(uarta_tx, 0, UART_TX_TIME);
+ }
+ set_irq(3);
+}
+
+static void
+uart_rx(caddr_t arg)
+{
+ int32 rsize;
+ char rxd;
+
+
+ rsize = 0;
+ if (f1open)
+ rsize = DO_STDIO_READ (ifd1, &rxd, 1);
+ else
+ rsize = 0;
+ if (rsize > 0) {
+ uarta_data = rxd;
+ if (uart_stat_reg & UARTA_DR) {
+ uart_stat_reg |= UARTA_OR;
+ }
+ uart_stat_reg |= UARTA_DR;
+ set_irq (3);
+ }
+ event(uart_rx, 0, UART_RX_TIME);
+}
+
+static void
+uart_intr(caddr_t arg)
+{
+ /* Check for UART interrupts every 1000 clk. */
+ grlib_read_uart(APBUART_STATUS);
+ flush_uart();
+ event(uart_intr, 0, UART_FLUSH_TIME);
+}
+
+
+static void
+uart_irq_start(void)
+{
+#ifdef FAST_UART
+ event (uart_intr, 0, UART_FLUSH_TIME);
+#else
+#ifndef _WIN32
+ event (uart_rx, 0, UART_RX_TIME);
+#endif
+#endif
+}
+
+/* GPTIMER. */
+
+static void
+gpt_intr(caddr_t arg)
+{
+ int i;
+
+ for (i=0; i<NGPTIMERS; i++) {
+ if (gpt_ctrl[i] & 1) {
+ gpt_counter[i] -= 1;
+ if (gpt_counter[i] == -1) {
+ if (gpt_ctrl[i] & 8)
+ set_irq(GPTIMER_IRQ + i);
+ if (gpt_ctrl[i] & 2)
+ gpt_counter[i] = gpt_reload[i];
+ }
+ }
+ }
+ event(gpt_intr, 0, gpt_scaler + 1);
+ gpt_scaler_start = now();
+}
+
+static void
+gpt_init(void)
+{
+ if (sis_verbose)
+ printf("GPT started (period %d)\n\r", gpt_scaler + 1);
+
+ grlib_apbpp_add(GRLIB_PP_ID(VENDOR_GAISLER, GAISLER_GPTIMER, 0, 8),
+ GRLIB_PP_APBADDR(0x80000300, 0xFFF));
+}
+
+static void
+gpt_reset(void)
+{
+ event(gpt_intr, 0, gpt_scaler + 1);
+ gpt_scaler_start = now();
+}
+
+static void
+gpt_scaler_set(uint32 val)
+{
+ /* Mask for 16-bit scaler. */
+ gpt_scaler = val & 0x0ffff;
+}
+
+static void
+timer_ctrl(uint32 val, int i)
+{
+ if (val & 4) {
+ /* Reload. */
+ gpt_counter[i] = gpt_reload[i];
+ }
+ gpt_ctrl[i] = val & 0xb;
+}
+
+/* Store data in host byte order. MEM points to the beginning of the
+ emulated memory; WADDR contains the index the emulated memory,
+ DATA points to words in host byte order to be stored. SZ contains log(2)
+ of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word),
+ 2 (one word), or 3 (two words); WS should return the number of wait-states. */
+
+static void
+store_bytes (unsigned char *mem, uint32 waddr, uint32 *data, int32 sz, int32 *ws)
+{
+ switch (sz) {
+ case 0:
+#ifdef HOST_LITTLE_ENDIAN
+ waddr ^= 3;
+#endif
+ mem[waddr] = *data & 0x0ff;
+ *ws = 0;
+ break;
+ case 1:
+#ifdef HOST_LITTLE_ENDIAN
+ waddr ^= 2;
+#endif
+ memcpy(&mem[waddr], data, 2);
+ *ws = 0;
+ break;
+ case 2:
+ memcpy(&mem[waddr], data, 4);
+ *ws = 0;
+ break;
+ case 3:
+ memcpy(&mem[waddr], data, 8);
+ *ws = 0;
+ break;
+ }
+}
+
+
+/* Memory emulation. */
+
+static int
+memory_iread (uint32 addr, uint32 *data, int32 *ws)
+{
+ if ((addr >= RAM_START) && (addr < RAM_END)) {
+ memcpy(data, &ramb[addr & RAM_MASK], 4);
+ *ws = 0;
+ return 0;
+ } else if (addr < ROM_END) {
+ memcpy(data, &romb[addr], 4);
+ *ws = 0;
+ return 0;
+ }
+
+ if (sis_verbose)
+ printf("Memory exception at %x (illegal address)\n", addr);
+ *ws = MEM_EX_WS;
+ return 1;
+}
+
+static int
+memory_read(uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ int32 mexc;
+
+ if ((addr >= RAM_START) && (addr < RAM_END)) {
+ memcpy(data, &ramb[addr & RAM_MASK & ~3], 4);
+ *ws = 0;
+ return 0;
+ } else if ((addr >= APBPP_START) && (addr <= APBPP_END)) {
+ *data = grlib_apbpnp_read(addr);
+ if (sis_verbose > 1)
+ printf("APB PP read a: %08x, d: %08x\n",addr, *data);
+ *ws = 4;
+ return 0;
+ } else if ((addr >= APBSTART) && (addr < APBEND)) {
+ mexc = apb_read(addr, data);
+ if (mexc) {
+ *ws = MEM_EX_WS;
+ } else {
+ *ws = 0;
+ }
+ return mexc;
+ } else if ((addr >= AHBPP_START) && (addr <= AHBPP_END)) {
+ if (sis_verbose > 1)
+ printf("AHB PP read a: %08x, d: %08x\n",addr, *data);
+ *data = grlib_ahbpnp_read(addr);
+ *ws = 4;
+ return 0;
+ } else if (addr < ROM_END) {
+ memcpy(data, &romb[addr & ~3], 4);
+ *ws = 0;
+ return 0;
+ }
+
+ if (sis_verbose)
+ printf("Memory exception at %x (illegal address)\n", addr);
+ *ws = MEM_EX_WS;
+ return 1;
+}
+
+static int
+memory_read_asi(int32 asi, uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ if (asi == 2) {
+ if (addr == 0)
+ *data = cache_ctrl;
+ else
+ *data = 0;
+ return MOK;
+ } else
+ return memory_read(addr, data, sz, ws);
+}
+
+static int
+memory_write(uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ uint32 byte_addr;
+ uint32 byte_mask;
+ uint32 waddr;
+ uint32 *ram;
+ int32 mexc;
+ int i;
+ int wphit[2];
+
+ if ((addr >= RAM_START) && (addr < RAM_END)) {
+ waddr = addr & RAM_MASK;
+ store_bytes (ramb, waddr, data, sz, ws);
+ return 0;
+
+ } else if ((addr >= APBSTART) && (addr < APBEND)) {
+ if (sz != 2) {
+ *ws = MEM_EX_WS;
+ return 1;
+ }
+ apb_write(addr, *data);
+ *ws = 0;
+ return 0;
+
+ } else if (addr < ROM_END) {
+ *ws = 0;
+ store_bytes (romb, addr, data, sz, ws);
+ return 0;
+ }
+
+ *ws = MEM_EX_WS;
+ return 1;
+}
+
+static int
+memory_write_asi(int32 asi, uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ if (asi == 2) {
+ cache_ctrl = *data & 0x81000f;
+ if (sis_verbose)
+ printf("cache ctrl reg : 0x%08x\n", cache_ctrl);
+ return MOK;
+ } else
+ return(memory_write(addr, data, sz, ws));
+}
+
+static unsigned char *
+get_mem_ptr(uint32 addr, uint32 size)
+{
+ if ((addr + size) < ROM_END) {
+ return &romb[addr];
+ } else if ((addr >= RAM_START) && ((addr + size) < RAM_END)) {
+ return &ramb[addr & RAM_MASK];
+ }
+
+ return (char *) -1;
+}
+
+static int
+sis_memory_write(uint32 addr, const unsigned char * data, uint32 length)
+{
+ char *mem;
+
+ if ((mem = get_mem_ptr(addr, length)) == ((char *) -1))
+ return 0;
+
+ memcpy(mem, data, length);
+ return length;
+}
+
+static int
+sis_memory_read(uint32 addr, char *data, uint32 length)
+{
+ char *mem;
+ int ws;
+
+ if (length == 4) {
+ memory_read(addr, (uint32 *) data, length, &ws);
+ return 4;
+ }
+
+ if ((mem = get_mem_ptr(addr, length)) == ((char *) -1))
+ return 0;
+
+ memcpy(data, mem, length);
+ return length;
+}
+
+static void
+boot_init (void)
+{
+ /* Generate 1 MHz RTC tick. */
+ apb_write(GPTIMER_SCALER, sregs.freq-1);
+ apb_write(GPTIMER_SCLOAD, sregs.freq-1);
+ apb_write(GPTIMER_TIMER1, -1);
+ apb_write(GPTIMER_RELOAD1, -1);
+ apb_write(GPTIMER_CTRL1, 0x7);
+
+ sregs.wim = 2;
+ sregs.psr = 0xF30010e0;
+ sregs.r[30] = RAM_END;
+ sregs.r[14] = sregs.r[30] - 96*4;
+ cache_ctrl = 0x81000f;
+}
+
+const struct memsys leon3 = {
+ init_sim,
+ reset,
+ error_mode,
+ sim_halt,
+ exit_sim,
+ init_stdio,
+ restore_stdio,
+ memory_iread,
+ memory_read,
+ memory_read_asi,
+ memory_write,
+ memory_write_asi,
+ sis_memory_write,
+ sis_memory_read,
+ boot_init
+};
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index d833da3..0e19270 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -142,7 +142,7 @@ main(argc, argv)
for (i = 0; i < 64; i++)
cmdq[i] = 0;
printf("\n SIS - SPARC instruction simulator %s, copyright Jiri Gaisler 1995\n", sis_version);
- printf(" Bug-reports to jgais@wd.estec.esa.nl\n\n");
+ printf(" Bug-reports to jiri@gaisler.se\n\n");
while (stat < argc) {
if (argv[stat][0] == '-') {
if (strcmp(argv[stat], "-v") == 0) {
@@ -181,6 +181,10 @@ main(argc, argv)
dumbio = 1;
} else if (strcmp(argv[stat], "-nouartrx") == 0) {
nouartrx = 1;
+ } else if (strcmp(argv[stat], "-leon3") == 0) {
+ ms = &leon3;
+ if (freq == 14) freq = 50;
+ cputype = CPU_LEON3;
} else if (strcmp(argv[stat], "-v") == 0) {
sis_verbose += 1;
} else {
@@ -193,13 +197,19 @@ main(argc, argv)
}
stat++;
}
+
+ switch (cputype) {
+ case CPU_LEON3:
+ printf(" LEON3 emulation enabled\n");
+ break;
+ default:
+ printf(" ERC32 emulation enabled\n");
+ }
+
if (nfp)
- printf("FPU disabled\n");
-#ifdef ERA
- if (era)
- printf("ERA ECC emulation enabled\n");
-#endif
+ printf(" FPU disabled\n");
sregs.freq = freq;
+ printf("\n");
INIT_DISASSEMBLE_INFO(dinfo, stdout, (fprintf_ftype) fprintf);
#ifdef HOST_LITTLE_ENDIAN
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index 9ec128e..0f0c487 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -152,6 +152,29 @@ struct irqcell {
int32 arg;
};
+struct memsys {
+ void (*init_sim) (void);
+ void (*reset) (void);
+ void (*error_mode) (uint32 pc);
+ void (*sim_halt) (void);
+ void (*exit_sim) (void);
+ void (*init_stdio) (void);
+ void (*restore_stdio) (void);
+ int (*memory_iread) (uint32 addr, uint32 *data, int32 *ws);
+ int (*memory_read) (uint32 addr, uint32 *data,
+ int32 sz, int32 *ws);
+ int (*memory_read_asi) (int32 asi, uint32 addr, uint32 *data,
+ int32 sz, int32 *ws);
+ int (*memory_write) (uint32 addr, uint32 *data,
+ int32 sz, int32 *ws);
+ int (*memory_write_asi) (int32 asi, uint32 addr, uint32 *data,
+ int32 sz, int32 *ws);
+ int (*sis_memory_write) (uint32 addr,
+ const unsigned char *data, uint32 length);
+ int (*sis_memory_read) (uint32 addr, char *data,
+ uint32 length);
+ void (*boot_init) (void);
+};
#define OK 0
#define TIME_OUT 1
@@ -159,6 +182,8 @@ struct irqcell {
#define ERROR 3
#define CTRL_C 4
+#define CPU_LEON3 3
+
/* Prototypes */
/* erc32.c */
@@ -213,7 +238,7 @@ extern int nouartrx;
extern host_callback *sim_callback;
extern int current_target_byte_order;
extern int dumbio;
-
+extern int cputype;
/* exec.c */
extern int dispatch_instruction (struct pstate *sregs);
@@ -234,23 +259,7 @@ extern void set_fsr (uint32 fsr);
extern void usage (void);
extern void gen_help (void);
-struct memsys {
- void (*init_sim) (void);
- void (*reset) (void);
- void (*error_mode) (uint32 pc);
- void (*sim_halt) (void);
- void (*exit_sim) (void);
- void (*init_stdio) (void);
- void (*restore_stdio) (void);
- int (*memory_iread) (uint32 addr, uint32 *data, int32 *ws);
- int (*memory_read) (int32 asi, uint32 addr, uint32 *data,
- int32 sz, int32 *ws);
- int (*memory_write) (int32 asi, uint32 addr, uint32 *data,
- int32 sz, int32 *ws);
- int (*sis_memory_write) (uint32 addr,
- const unsigned char *data, uint32 length);
- int (*sis_memory_read) (uint32 addr, char *data,
- uint32 length);
-};
-
extern const struct memsys *ms;
+
+/* leon3.c */
+extern const struct memsys leon3;
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v4 06/13] sim/erc32: Use gdb callback for UART I/O when linked with gdb.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (3 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 09/13] sim/erc32: Add support for LEON3 processor emulation Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-28 7:13 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 04/13] sim/erc32: Use memory_iread() function for instruction fetching Jiri Gaisler
` (7 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Use the host_callback feature for printing when linked with gdb.
---
sim/erc32/erc32.c | 98 +++++++++++++++++++++++++++++++++++++++++++++---------
sim/erc32/func.c | 4 +++
sim/erc32/interf.c | 5 +--
sim/erc32/sis.c | 2 ++
sim/erc32/sis.h | 4 +++
5 files changed, 95 insertions(+), 18 deletions(-)
diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c
index c6d67ac..43f0644 100644
--- a/sim/erc32/erc32.c
+++ b/sim/erc32/erc32.c
@@ -22,6 +22,7 @@
/* The control space devices */
#include "config.h"
+#include <errno.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
@@ -38,7 +39,7 @@ extern int32 sparclite, sparclite_board;
extern int rom8,wrp,uben;
extern char uart_dev1[], uart_dev2[];
-int dumbio = 0; /* normal, smart, terminal oriented IO by default */
+static int tty_setup = 1; /* default setup if not a tty */
/* MEC registers */
#define MEC_START 0x01f80000
@@ -301,12 +302,15 @@ static void store_bytes (unsigned char *mem, uint32 waddr,
extern int ext_irl;
+static host_callback *callback;
+
/* One-time init */
void
init_sim()
{
+ callback = sim_callback;
port_init();
}
@@ -944,10 +948,14 @@ init_stdio()
{
if (dumbio)
return; /* do nothing */
- if (!ifd1)
+ if (ifd1 == 0 && f1open) {
tcsetattr(0, TCSANOW, &ioc1);
- if (!ifd2)
+ tcflush(ifd1, TCIFLUSH);
+ }
+ if (ifd2 == 0 && f1open) {
tcsetattr(0, TCSANOW, &ioc2);
+ tcflush(ifd2, TCIFLUSH);
+ }
}
void
@@ -955,16 +963,18 @@ restore_stdio()
{
if (dumbio)
return; /* do nothing */
- if (!ifd1)
+ if (ifd1 == 0 && f1open && tty_setup)
tcsetattr(0, TCSANOW, &iocold1);
- if (!ifd2)
+ if (ifd2 == 0 && f2open && tty_setup)
tcsetattr(0, TCSANOW, &iocold2);
}
#define DO_STDIO_READ( _fd_, _buf_, _len_ ) \
- ( dumbio \
+ ( dumbio || nouartrx \
? (0) /* no bytes read, no delay */ \
- : read( _fd_, _buf_, _len_ ) )
+ : (_fd_) == 1 && callback ? \
+ callback->read_stdin (callback, _buf_, _len_) : \
+ read( _fd_, _buf_, _len_ ) )
static void
@@ -994,21 +1004,26 @@ port_init()
}
if (f1in) ifd1 = fileno(f1in);
if (ifd1 == 0) {
+ if (callback && !callback->isatty(callback, ifd1)) {
+ tty_setup = 0;
+ }
if (sis_verbose)
printf("serial port A on stdin/stdout\n");
if (!dumbio) {
tcgetattr(ifd1, &ioc1);
+ if (tty_setup) {
iocold1 = ioc1;
ioc1.c_lflag &= ~(ICANON | ECHO);
ioc1.c_cc[VMIN] = 0;
ioc1.c_cc[VTIME] = 0;
}
+ }
f1open = 1;
}
if (f1out) {
ofd1 = fileno(f1out);
- if (!dumbio && ofd1 == 1) setbuf(f1out, NULL);
+ if (!dumbio && tty_setup && ofd1 == 1) setbuf(f1out, NULL);
}
if (uart_dev2[0] != 0)
@@ -1027,17 +1042,19 @@ port_init()
printf("serial port B on stdin/stdout\n");
if (!dumbio) {
tcgetattr(ifd2, &ioc2);
+ if (tty_setup) {
iocold2 = ioc2;
ioc2.c_lflag &= ~(ICANON | ECHO);
ioc2.c_cc[VMIN] = 0;
ioc2.c_cc[VTIME] = 0;
}
+ }
f2open = 1;
}
if (f2out) {
ofd2 = fileno(f2out);
- if (!dumbio && ofd2 == 1) setbuf(f2out, NULL);
+ if (!dumbio && tty_setup && ofd2 == 1) setbuf(f2out, NULL);
}
wnuma = wnumb = 0;
@@ -1066,6 +1083,9 @@ read_uart(addr)
if (f1open) {
anum = DO_STDIO_READ(ifd1, aq, UARTBUF);
}
+ else {
+ anum = 0;
+ }
if (anum > 0) {
aind = 0;
if ((aind + 1) < anum)
@@ -1098,6 +1118,9 @@ read_uart(addr)
if (f2open) {
bnum = DO_STDIO_READ(ifd2, bq, UARTBUF);
}
+ else {
+ bnum = 0;
+ }
if (bnum > 0) {
bind = 0;
if ((bind + 1) < bnum)
@@ -1130,6 +1153,9 @@ read_uart(addr)
if (f1open) {
anum = DO_STDIO_READ(ifd1, aq, UARTBUF);
}
+ else {
+ anum = 0;
+ }
if (anum > 0) {
Ucontrol |= 0x00000001;
aind = 0;
@@ -1142,6 +1168,9 @@ read_uart(addr)
if (f2open) {
bnum = DO_STDIO_READ(ifd2, bq, UARTBUF);
}
+ else {
+ bnum = 0;
+ }
if (bnum > 0) {
Ucontrol |= 0x00010000;
bind = 0;
@@ -1182,8 +1211,12 @@ write_uart(addr, data)
if (wnuma < UARTBUF)
wbufa[wnuma++] = c;
else {
- while (wnuma)
+ while (wnuma) {
+ if (ofd1 == 1 && callback)
+ wnuma -= callback->write_stdout(callback, wbufa, wnuma);
+ else
wnuma -= fwrite(wbufa, 1, wnuma, f1out);
+ }
wbufa[wnuma++] = c;
}
}
@@ -1206,8 +1239,12 @@ write_uart(addr, data)
if (wnumb < UARTBUF)
wbufb[wnumb++] = c;
else {
- while (wnumb)
+ while (wnumb) {
+ if (ofd1 == 1 && callback)
+ wnumb -= callback->write_stdout(callback, wbufb, wnumb);
+ else
wnumb -= fwrite(wbufb, 1, wnumb, f2out);
+ }
wbufb[wnumb++] = c;
}
}
@@ -1245,19 +1282,37 @@ write_uart(addr, data)
static void
flush_uart()
{
- while (wnuma && f1open)
+ while (wnuma && f1open) {
+ if (ofd1 == 1 && callback) {
+ wnuma -= callback->write_stdout(callback, wbufa, wnuma);
+ callback->flush_stdout(callback);
+ }
+ else
wnuma -= fwrite(wbufa, 1, wnuma, f1out);
- while (wnumb && f2open)
+ }
+ while (wnumb && f2open) {
+ if (ofd2 == 1 && callback) {
+ wnuma -= callback->write_stdout(callback, wbufb, wnuma);
+ callback->flush_stdout(callback);
+ }
+ else
wnumb -= fwrite(wbufb, 1, wnumb, f2out);
}
+}
static void
uarta_tx()
{
-
- while (f1open && fwrite(&uarta_sreg, 1, 1, f1out) != 1);
+ while (f1open) {
+ if (ofd1 == 1 && callback) {
+ while (callback->write_stdout(callback, &uarta_sreg, 1) != 1);
+ }
+ else {
+ while (fwrite(&uarta_sreg, 1, 1, f1out) != 1);
+ }
+ }
if (uart_stat_reg & UARTA_HRE) {
uart_stat_reg |= UARTA_SRE;
} else {
@@ -1271,7 +1326,14 @@ uarta_tx()
static void
uartb_tx()
{
- while (f2open && fwrite(&uartb_sreg, 1, 1, f2out) != 1);
+ while (f2open) {
+ if (ofd2 == 1 && callback) {
+ while (callback->write_stdout(callback, &uarta_sreg, 1) != 1);
+ }
+ else {
+ while (fwrite(&uartb_sreg, 1, 1, f2out) != 1);
+ }
+ }
if (uart_stat_reg & UARTB_HRE) {
uart_stat_reg |= UARTB_SRE;
} else {
@@ -1293,6 +1355,8 @@ uart_rx(arg)
rsize = 0;
if (f1open)
rsize = DO_STDIO_READ(ifd1, &rxd, 1);
+ else
+ rsize = 0;
if (rsize > 0) {
uarta_data = UART_DR | rxd;
if (uart_stat_reg & UARTA_HRE)
@@ -1309,6 +1373,8 @@ uart_rx(arg)
rsize = 0;
if (f2open)
rsize = DO_STDIO_READ(ifd2, &rxd, 1);
+ else
+ rsize = 0;
if (rsize) {
uartb_data = UART_DR | rxd;
if (uart_stat_reg & UARTB_HRE)
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 0dcdf93..1cb156d 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -34,6 +34,8 @@
#define VAL(x) strtoul(x,(char **)NULL,0)
extern int current_target_byte_order;
+int dumbio = 0; /* normal, smart, terminal oriented IO by default */
+
struct disassemble_info dinfo;
struct pstate sregs;
extern struct estate ebase;
@@ -52,6 +54,8 @@ char uart_dev1[128] = "";
char uart_dev2[128] = "";
extern int ext_irl;
uint32 last_load_addr = 0;
+int nouartrx = 0;
+host_callback *sim_callback;
#ifdef ERRINJ
uint32 errcnt = 0;
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 098b9ce..1686cc3 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -62,8 +62,6 @@ extern char uart_dev1[], uart_dev2[];
int sis_gdb_break = 1;
-host_callback *sim_callback;
-
int
run_sim(sregs, icount, dis)
struct pstate *sregs;
@@ -211,6 +209,9 @@ sim_open (kind, callback, abfd, argv)
if (strcmp(argv[stat], "-dumbio") == 0) {
dumbio = 1;
} else
+ if (strcmp(argv[stat], "-nouartrx") == 0) {
+ nouartrx = 1;
+ } else
if (strcmp(argv[stat], "-wrp") == 0) {
wrp = 1;
} else
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index b066a56..2623fc5 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -202,6 +202,8 @@ main(argc, argv)
#endif
} else if (strcmp(argv[stat], "-dumbio") == 0) {
dumbio = 1;
+ } else if (strcmp(argv[stat], "-nouartrx") == 0) {
+ nouartrx = 1;
} else if (strcmp(argv[stat], "-v") == 0) {
sis_verbose += 1;
} else {
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index ae39ad1..45a0cc6 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -204,6 +204,10 @@ extern void sys_reset (void);
extern void sys_halt (void);
extern int bfd_load (const char *fname);
extern double get_time (void);
+extern int nouartrx;
+extern host_callback *sim_callback;
+extern int dumbio;
+
/* exec.c */
extern int dispatch_instruction (struct pstate *sregs);
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* Re: [PATCH v4 06/13] sim/erc32: Use gdb callback for UART I/O when linked with gdb.
2015-03-17 21:03 ` [PATCH v4 06/13] sim/erc32: Use gdb callback for UART I/O when linked with gdb Jiri Gaisler
@ 2015-03-28 7:13 ` Mike Frysinger
0 siblings, 0 replies; 31+ messages in thread
From: Mike Frysinger @ 2015-03-28 7:13 UTC (permalink / raw)
To: Jiri Gaisler; +Cc: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 4232 bytes --]
On 17 Mar 2015 22:02, Jiri Gaisler wrote:
> Use the host_callback feature for printing when linked with gdb.
please write ChangeLog entries
> if (dumbio)
> return; /* do nothing */
> - if (!ifd1)
> + if (ifd1 == 0 && f1open) {
> tcsetattr(0, TCSANOW, &ioc1);
> - if (!ifd2)
> + tcflush(ifd1, TCIFLUSH);
8 spaces -> 1 tab
> + }
> + if (ifd2 == 0 && f1open) {
> tcsetattr(0, TCSANOW, &ioc2);
> + tcflush(ifd2, TCIFLUSH);
8 spaces -> 1 tab
> + if (callback && !callback->isatty(callback, ifd1)) {
> + tty_setup = 0;
> + }
drop the braces
> if (sis_verbose)
> printf("serial port A on stdin/stdout\n");
> if (!dumbio) {
> tcgetattr(ifd1, &ioc1);
> + if (tty_setup) {
> iocold1 = ioc1;
> ioc1.c_lflag &= ~(ICANON | ECHO);
> ioc1.c_cc[VMIN] = 0;
> ioc1.c_cc[VTIME] = 0;
> }
> + }
need to fix indentation
> @@ -1027,17 +1042,19 @@ port_init()
> printf("serial port B on stdin/stdout\n");
> if (!dumbio) {
> tcgetattr(ifd2, &ioc2);
> + if (tty_setup) {
> iocold2 = ioc2;
> ioc2.c_lflag &= ~(ICANON | ECHO);
> ioc2.c_cc[VMIN] = 0;
> ioc2.c_cc[VTIME] = 0;
> }
> + }
need to fix indentation
> - if (!dumbio && ofd2 == 1) setbuf(f2out, NULL);
> + if (!dumbio && tty_setup && ofd2 == 1) setbuf(f2out, NULL);
uncuddle while you're here
> @@ -1066,6 +1083,9 @@ read_uart(addr)
> if (f1open) {
> anum = DO_STDIO_READ(ifd1, aq, UARTBUF);
> }
> + else {
> + anum = 0;
> + }
drop the braces
> @@ -1098,6 +1118,9 @@ read_uart(addr)
> if (f2open) {
> bnum = DO_STDIO_READ(ifd2, bq, UARTBUF);
> }
> + else {
> + bnum = 0;
> + }
drop the braces
> @@ -1130,6 +1153,9 @@ read_uart(addr)
> if (f1open) {
> anum = DO_STDIO_READ(ifd1, aq, UARTBUF);
> }
> + else {
> + anum = 0;
> + }
drop the braces
> @@ -1142,6 +1168,9 @@ read_uart(addr)
> if (f2open) {
> bnum = DO_STDIO_READ(ifd2, bq, UARTBUF);
> }
> + else {
> + bnum = 0;
> + }
drop the braces
> @@ -1182,8 +1211,12 @@ write_uart(addr, data)
> if (wnuma < UARTBUF)
> wbufa[wnuma++] = c;
> else {
> - while (wnuma)
> + while (wnuma) {
> + if (ofd1 == 1 && callback)
> + wnuma -= callback->write_stdout(callback, wbufa, wnuma);
> + else
needs tabs for indenting
> @@ -1206,8 +1239,12 @@ write_uart(addr, data)
> if (wnumb < UARTBUF)
> wbufb[wnumb++] = c;
> else {
> - while (wnumb)
> + while (wnumb) {
> + if (ofd1 == 1 && callback)
> + wnumb -= callback->write_stdout(callback, wbufb, wnumb);
> + else
> wnumb -= fwrite(wbufb, 1, wnumb, f2out);
> + }
same here
> @@ -1245,19 +1282,37 @@ write_uart(addr, data)
> static void
> flush_uart()
> {
> - while (wnuma && f1open)
> + while (wnuma && f1open) {
> + if (ofd1 == 1 && callback) {
> + wnuma -= callback->write_stdout(callback, wbufa, wnuma);
> + callback->flush_stdout(callback);
> + }
> + else
8 spaces -> 1 tab
> wnuma -= fwrite(wbufa, 1, wnuma, f1out);
> - while (wnumb && f2open)
> + }
> + while (wnumb && f2open) {
> + if (ofd2 == 1 && callback) {
> + wnuma -= callback->write_stdout(callback, wbufb, wnuma);
> + callback->flush_stdout(callback);
> + }
> + else
8 spaces -> 1 tab
this keeps coming up. i'll stop noting it with the expectation you'll fix all
the new code.
> + while (callback->write_stdout(callback, &uarta_sreg, 1) != 1);
should be a space before the ( -- comes up a few times in this patch
also, prefer to have an explicit body rather than cuddle the ;
while (...)
continue;
comes up a few times in this patch
-mike
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v4 04/13] sim/erc32: Use memory_iread() function for instruction fetching.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (4 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 06/13] sim/erc32: Use gdb callback for UART I/O when linked with gdb Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-28 7:01 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 02/13] sim/erc32: Removed type mismatch compiler warnings Jiri Gaisler
` (6 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Use separate memory_iread() function for instruction fetching.
Speeds up execution and allows addition of an MMU at a later stage.
* erc32.c (memory_iread): New function to fetch instructions.
* interf.c (run_sim): Use memory_iread.
* sis.c (run_sim): As above.
---
sim/erc32/erc32.c | 38 ++++++++++++++++++++++++++++++++------
sim/erc32/interf.c | 5 ++---
sim/erc32/sis.c | 8 ++------
sim/erc32/sis.h | 2 ++
4 files changed, 38 insertions(+), 15 deletions(-)
diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c
index 8c0ddd3..c6d67ac 100644
--- a/sim/erc32/erc32.c
+++ b/sim/erc32/erc32.c
@@ -1083,7 +1083,7 @@ read_uart(addr)
return tmp;
#endif
#else
- return(0);
+ return 0;
#endif
break;
@@ -1115,7 +1115,7 @@ read_uart(addr)
return tmp;
#endif
#else
- return(0);
+ return 0;
#endif
break;
@@ -1155,7 +1155,7 @@ read_uart(addr)
return (uart_stat_reg);
#endif
#else
- return(0x00060006);
+ return 0x00060006;
#endif
break;
default:
@@ -1565,6 +1565,31 @@ store_bytes (mem, waddr, data, sz, ws)
/* Memory emulation */
int
+memory_iread(uint32 addr, uint32 *data, int32 *ws)
+{
+ uint32 asi;
+ if ((addr >= mem_ramstart) && (addr < (mem_ramstart + mem_ramsz))) {
+ memcpy (data, &ramb[addr & mem_rammask & ~3], 4);
+ *ws = mem_ramr_ws;
+ return (0);
+ } else if (addr < mem_romsz) {
+ memcpy (data, &romb[addr & ~3], 4);
+ *ws = mem_romr_ws;
+ return (0);
+ }
+
+ if (sis_verbose)
+ printf ("Memory exception at %x (illegal address)\n", addr);
+ if (sregs.psr & 0x080)
+ asi = 9;
+ else
+ asi = 8;
+ set_sfsr (UIMP_ACC, addr, asi, 1);
+ *ws = MEM_EX_WS;
+ return 1;
+}
+
+int
memory_read(asi, addr, data, sz, ws)
int32 asi;
uint32 addr;
@@ -1582,7 +1607,7 @@ memory_read(asi, addr, data, sz, ws)
if (errmec == 5) mecparerror();
if (errmec == 6) iucomperr();
errmec = 0;
- return(1);
+ return 1;
}
#endif
@@ -1631,7 +1656,8 @@ memory_read(asi, addr, data, sz, ws)
}
- printf("Memory exception at %x (illegal address)\n", addr);
+ if (sis_verbose)
+ printf ("Memory exception at %x (illegal address)\n", addr);
set_sfsr(UIMP_ACC, addr, asi, 1);
*ws = MEM_EX_WS;
return (1);
@@ -1661,7 +1687,7 @@ memory_write(asi, addr, data, sz, ws)
if (errmec == 5) mecparerror();
if (errmec == 6) iucomperr();
errmec = 0;
- return(1);
+ return 1;
}
#endif
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 97540a9..098b9ce 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -96,9 +96,8 @@ run_sim(sregs, icount, dis)
if (sregs->pc == 0 || sregs->npc == 0)
printf ("bogus pc or npc\n");
#endif
- mexc = memory_read(sregs->asi, sregs->pc, &sregs->inst,
- 2, &sregs->hold);
-#if 1 /* DELETE ME! for debugging purposes only */
+ mexc = memory_iread (sregs->pc, &sregs->inst, &sregs->hold);
+#if 0 /* DELETE ME! for debugging purposes only */
if (sis_verbose > 2)
printf("pc %x, np %x, sp %x, fp %x, wm %x, cw %x, i %08x\n",
sregs->pc, sregs->npc,
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index dcb5ebf..b066a56 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -75,7 +75,7 @@ run_sim(sregs, icount, dis)
uint64 icount;
int dis;
{
- int irq, mexc, deb, asi;
+ int irq, mexc, deb;
sregs->starttime = get_time();
init_stdio();
@@ -84,11 +84,7 @@ run_sim(sregs, icount, dis)
irq = 0;
while (icount > 0) {
- if (sregs->psr & 0x080)
- asi = 9;
- else
- asi = 8;
- mexc = memory_read(asi, sregs->pc, &sregs->inst, 2, &sregs->hold);
+ mexc = memory_iread(sregs->pc, &sregs->inst, &sregs->hold);
sregs->icnt = 1;
if (sregs->annul) {
sregs->annul = 0;
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index 74466ae..d21bf49 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -169,6 +169,7 @@ extern void sim_halt (void);
extern void exit_sim (void);
extern void init_stdio (void);
extern void restore_stdio (void);
+extern int memory_iread (uint32 addr, uint32 *data, int32 *ws);
extern int memory_read (int32 asi, uint32 addr, uint32 *data,
int32 sz, int32 *ws);
extern int memory_write (int32 asi, uint32 addr, uint32 *data,
@@ -179,6 +180,7 @@ extern int sis_memory_read (uint32 addr, char *data,
uint32 length);
/* func.c */
+extern struct pstate sregs;
extern void set_regi (struct pstate *sregs, int32 reg,
uint32 rval);
extern void get_regi (struct pstate *sregs, int32 reg, char *buf);
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v4 02/13] sim/erc32: Removed type mismatch compiler warnings
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (5 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 04/13] sim/erc32: Use memory_iread() function for instruction fetching Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-17 22:59 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 10/13] sim/erc32: Add support for LEON2 processor emulation Jiri Gaisler
` (5 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
* func.c (exec_cmd) : silence compiler warnings when calling system().
(batch) : replace fgets() with getline().
---
sim/erc32/func.c | 24 +++++++++++++++---------
1 file changed, 15 insertions(+), 9 deletions(-)
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 260ceff..e42b0ec 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -80,20 +80,24 @@ batch(sregs, fname)
char *fname;
{
FILE *fp;
- char lbuf[1024];
+ char *lbuf = NULL;
+ size_t len = 0;
+ ssize_t tmp;
+ size_t slen;
if ((fp = fopen(fname, "r")) == NULL) {
fprintf(stderr, "couldn't open batch file %s\n", fname);
return (0);
}
- while (!feof(fp)) {
- lbuf[0] = 0;
- fgets(lbuf, 1023, fp);
- if ((strlen(lbuf) > 0) && (lbuf[strlen(lbuf) - 1] == '\n'))
- lbuf[strlen(lbuf) - 1] = 0;
- printf("sis> %s\n", lbuf);
- exec_cmd(sregs, lbuf);
+ while (getline(&lbuf, &len, fp) > -1) {
+ slen = strlen(lbuf);
+ if (slen && (lbuf[slen - 1] == '\n')) {
+ lbuf[slen - 1] = 0;
+ printf("sis> %s\n", lbuf);
+ exec_cmd(sregs, lbuf);
+ }
}
+ free(lbuf);
fclose(fp);
return (1);
}
@@ -554,7 +558,9 @@ exec_cmd(sregs, cmd)
sim_halt();
} else if (strncmp(cmd1, "shell", clen) == 0) {
if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
- system(&cmdsave[clen]);
+ if (system(&cmdsave[clen])) {
+ /* Silence unused return value warning. */
+ }
}
} else if (strncmp(cmd1, "step", clen) == 0) {
stat = run_sim(sregs, 1, 1);
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v4 10/13] sim/erc32: Add support for LEON2 processor emulation.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (6 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 02/13] sim/erc32: Removed type mismatch compiler warnings Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-28 7:21 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 05/13] sim/erc32: Fix a few compiler warnings Jiri Gaisler
` (4 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Added memory and I/O sub-system to emulate a LEON2 processor.
The cache and MMU are not emulated but enough functionallity
is provided to run any RTEMS and BCC compiled application.
The code is based on leon3.c and modified to emulate the
LEON2 address space and peripheral operations.
---
sim/erc32/Makefile.in | 2 +-
sim/erc32/exec.c | 3 +
sim/erc32/interf.c | 11 +-
sim/erc32/leon2.c | 986 ++++++++++++++++++++++++++++++++++++++++++++++++++
sim/erc32/sis.c | 7 +
sim/erc32/sis.h | 4 +
6 files changed, 1010 insertions(+), 3 deletions(-)
create mode 100644 sim/erc32/leon2.c
diff --git a/sim/erc32/Makefile.in b/sim/erc32/Makefile.in
index ae385fb..87e5c8f 100644
--- a/sim/erc32/Makefile.in
+++ b/sim/erc32/Makefile.in
@@ -22,7 +22,7 @@ TERMCAP_LIB = @TERMCAP@
READLINE_LIB = @READLINE@
# `sis' doesn't need interf.o.
-SIS_OFILES = exec.o erc32.o func.o help.o float.o sim-main.o leon3.o grlib.o
+SIS_OFILES = exec.o erc32.o func.o help.o float.o sim-main.o leon2.o leon3.o grlib.o
SIM_OBJS = $(SIS_OFILES) interf.o
SIM_RUN_OBJS = sis.o
diff --git a/sim/erc32/exec.c b/sim/erc32/exec.c
index 5fc6f1b..65d7487 100644
--- a/sim/erc32/exec.c
+++ b/sim/erc32/exec.c
@@ -2207,6 +2207,9 @@ init_regs(sregs)
if (cputype == CPU_LEON3)
sregs->psr |= 0xF3000080; /* Set supervisor bit */
else
+ if (cputype == CPU_LEON2)
+ sregs->psr |= 0x00000080; /* Set supervisor bit */
+ else
sregs->psr |= 0x11000080; /* Set supervisor bit */
sregs->breakpoint = 0;
sregs->annul = 0;
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 1e6ab7b..2ed9914 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -189,6 +189,10 @@ sim_open (kind, callback, abfd, argv)
if (strcmp(argv[stat], "-nouartrx") == 0) {
nouartrx = 1;
} else
+ if (strcmp(argv[stat], "-leon2") == 0) {
+ ms = &leon2;
+ cputype = CPU_LEON2;
+ } else
if (strcmp(argv[stat], "-leon3") == 0) {
ms = &leon3;
cputype = CPU_LEON3;
@@ -230,15 +234,18 @@ sim_open (kind, callback, abfd, argv)
stat++;
}
- if (cputype == CPU_LEON3)
+ if ((cputype == CPU_LEON3) || (cputype == CPU_LEON2))
sregs.freq = freq ? freq : 50;
else
sregs.freq = freq ? freq : 14;
if (sis_verbose) {
(*sim_callback->printf_filtered) (sim_callback, "\n SIS - SPARC instruction simulator %s\n", sis_version);
- (*sim_callback->printf_filtered) (sim_callback, " Bug-reports to Jiri Gaisler ESA/ESTEC (jiri@gaisler.se)\n\n");
+ (*sim_callback->printf_filtered) (sim_callback, " Bug-reports to Jiri Gaisler (jiri@gaisler.se)\n\n");
switch (cputype) {
+ case CPU_LEON2:
+ (*sim_callback->printf_filtered) (sim_callback, "LEON2 emulation enabled\n");
+ break;
case CPU_LEON3:
(*sim_callback->printf_filtered) (sim_callback, "LEON3 emulation enabled\n");
break;
diff --git a/sim/erc32/leon2.c b/sim/erc32/leon2.c
new file mode 100644
index 0000000..0b934a0
--- /dev/null
+++ b/sim/erc32/leon2.c
@@ -0,0 +1,986 @@
+/*
+ * This file is part of SIS.
+ *
+ * SIS, SPARC instruction simulator V2.5 Copyright (C) 1995 Jiri Gaisler,
+ * European Space Agency
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Leon2 emulation, based on leon3.c.
+ */
+
+/* The control space devices. */
+
+#include "config.h"
+#include <errno.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+#include <termios.h>
+#include <sys/fcntl.h>
+#include <sys/file.h>
+#include <unistd.h>
+#include "sis.h"
+#include "sim-config.h"
+
+static int tty_setup = 1;
+
+/* APB registers */
+#define APBSTART 0x80000000
+#define APBEND 0x80000100
+
+/* Memory exception waitstates */
+#define MEM_EX_WS 1
+
+#define MOK 0
+
+/* LEON2 APB register addresses */
+
+#define IRQCTRL_IPR 0x094
+#define IRQCTRL_IMR 0x090
+#define IRQCTRL_ICR 0x09C
+#define IRQCTRL_IFR 0x098
+#define TIMER_SCALER 0x060
+#define TIMER_SCLOAD 0x064
+#define LEON2_CONFIG 0x024
+#define TIMER_TIMER1 0x040
+#define TIMER_RELOAD1 0x044
+#define TIMER_CTRL1 0x048
+#define TIMER_TIMER2 0x050
+#define TIMER_RELOAD2 0x054
+#define TIMER_CTRL2 0x058
+#define CACHE_CTRL 0x014
+#define POWER_DOWN 0x018
+
+#define APBUART_RXTX 0x070
+#define APBUART_STATUS 0x074
+
+/* Size of UART buffers (bytes). */
+#define UARTBUF 1024
+
+/* Number of simulator ticks between flushing the UARTS. */
+/* For good performance, keep above 1000. */
+#define UART_FLUSH_TIME 3000
+
+/* New uart defines. */
+#define UART_TX_TIME 1000
+#define UART_RX_TIME 1000
+#define UARTA_DR 0x1
+#define UARTA_SRE 0x2
+#define UARTA_HRE 0x4
+#define UARTA_OR 0x10
+
+/* IRQCTRL registers. */
+
+static uint32 irqctrl_ipr;
+static uint32 irqctrl_imr;
+static uint32 irqctrl_ifr;
+
+/* TIMER registers. */
+
+#define NTIMERS 2
+#define TIMER_IRQ 8
+
+static uint32 gpt_scaler;
+static uint32 gpt_scaler_start;
+static uint32 gpt_counter[NTIMERS];
+static uint32 gpt_reload[NTIMERS];
+static uint32 gpt_ctrl[NTIMERS];
+
+/* ROM size 16 Mbyte. */
+#define ROM_START 0x00000000
+#define ROM_MASK 0x00ffffff
+#define ROM_END (ROM_START + ROM_MASK + 1)
+
+/* RAM size 16 Mbyte. */
+#define RAM_START 0x40000000
+#define RAM_MASK 0x00ffffff
+#define RAM_END (RAM_START + RAM_MASK + 1)
+
+/* Memory. */
+
+static unsigned char romb[ROM_END - ROM_START];
+static unsigned char ramb[RAM_END - RAM_START];
+static uint32 cache_ctrl;
+
+
+/* UART support variables. */
+
+/* File descriptor for input file. */
+static int32 fd1, fd2;
+/* UART status register. */
+static int32 Ucontrol;
+
+static unsigned char aq[UARTBUF], bq[UARTBUF];
+static int32 anum, aind = 0;
+static int32 bnum, bind = 0;
+static char wbufa[UARTBUF], wbufb[UARTBUF];
+static unsigned wnuma;
+static unsigned wnumb;
+static FILE *f1in, *f1out;
+static struct termios ioc1, ioc2, iocold1, iocold2;
+static int f1open = 0;
+
+static char uarta_sreg, uarta_hreg;
+static uint32 uart_stat_reg;
+static uint32 uarta_data;
+
+/* Forward declarations. */
+
+static void mem_init (void);
+static void close_port (void);
+static void leon2_reset (void);
+static void irqctrl_intack (int32 level);
+static void chk_irq (void);
+static void set_irq (int32 level);
+static int32 apb_read (uint32 addr, uint32 *data);
+static int apb_write (uint32 addr, uint32 data);
+static void port_init (void);
+static uint32 grlib_read_uart (uint32 addr);
+static void grlib_write_uart (uint32 addr, uint32 data);
+static void flush_uart (void);
+static void uarta_tx (void);
+static void uart_rx (caddr_t arg);
+static void uart_intr (caddr_t arg);
+static void uart_irq_start (void);
+static void gpt_intr (caddr_t arg);
+static void gpt_init (void);
+static void gpt_reset (void);
+static void gpt_scaler_set (uint32 val);
+static void timer_ctrl (uint32 val, int i);
+static unsigned char *
+ get_mem_ptr (uint32 addr, uint32 size);
+static void store_bytes (unsigned char *mem, uint32 waddr,
+ uint32 *data, int sz, int32 *ws);
+
+static host_callback *callback;
+
+
+/* One-time init. */
+
+static void
+init_sim(void)
+{
+ callback = sim_callback;
+ grlib_init();
+ mem_init();
+ port_init();
+ gpt_init();
+}
+
+/* Power-on reset init. */
+
+static void
+reset(void)
+{
+ leon2_reset();
+ uart_irq_start();
+ gpt_reset();
+}
+
+/* IU error mode manager. */
+
+static void
+error_mode(uint32 pc)
+{
+
+}
+
+
+/* Memory init. */
+
+static void
+mem_init(void)
+{
+
+ if (sis_verbose)
+ printf("RAM start: 0x%x, RAM size: %d K, ROM size: %d K\n",
+ RAM_START, (RAM_MASK+1)/1024, (ROM_MASK+1)/1024);
+}
+
+/* Flush ports when simulator stops. */
+
+static void
+sim_halt(void)
+{
+#ifdef FAST_UART
+ flush_uart();
+#endif
+}
+
+static void
+close_port(void)
+{
+ if (f1open && f1in != stdin)
+ fclose(f1in);
+}
+
+static void
+exit_sim(void)
+{
+ close_port();
+}
+
+static void
+leon2_reset(void)
+{
+ int i;
+
+ irqctrl_ipr = 0;
+ irqctrl_imr = 0;
+ irqctrl_ifr = 0;
+
+ wnuma = wnumb = 0;
+ anum = aind = bnum = bind = 0;
+
+ uart_stat_reg = UARTA_SRE | UARTA_HRE;
+
+ gpt_counter[0] = 0xffffffff;
+ gpt_reload[0] = 0xffffffff;
+ gpt_scaler = 0xffff;
+ gpt_ctrl[0] = 0;
+ gpt_ctrl[1] = 0;
+
+}
+
+static void
+irqctrl_intack(int32 level)
+{
+ int irq_test;
+
+ if (sis_verbose > 2)
+ printf("interrupt %d acknowledged\n", level);
+ if (irqctrl_ifr & (1 << level))
+ irqctrl_ifr &= ~(1 << level);
+ else
+ irqctrl_ipr &= ~(1 << level);
+ chk_irq();
+}
+
+static void
+chk_irq(void)
+{
+ int32 i;
+ uint32 itmp;
+ int old_irl;
+
+ old_irl = ext_irl;
+ itmp = ((irqctrl_ipr | irqctrl_ifr) & irqctrl_imr) & 0x0fffe;
+ ext_irl = 0;
+ if (itmp != 0) {
+ for (i = 15; i > 0; i--) {
+ if (((itmp >> i) & 1) != 0) {
+ if ((sis_verbose > 2) && (i > old_irl))
+ printf("IU irl: %d\n", i);
+ ext_irl = i;
+ set_int(i, irqctrl_intack, i);
+ break;
+ }
+ }
+ }
+}
+
+static void
+set_irq(int32 level)
+{
+ irqctrl_ipr |= (1 << level);
+ chk_irq();
+}
+
+static int32
+apb_read(uint32 addr, uint32 *data)
+{
+
+ switch (addr & 0xfff) {
+
+ case APBUART_RXTX: /* 0x100 */
+ case APBUART_STATUS: /* 0x104 */
+ *data = grlib_read_uart(addr);
+ break;
+
+ case IRQCTRL_IPR: /* 0x204 */
+ *data = irqctrl_ipr;
+ break;
+
+ case IRQCTRL_IFR: /* 0x208 */
+ *data = irqctrl_ifr;
+ break;
+
+ case IRQCTRL_IMR: /* 0x240 */
+ *data = irqctrl_imr;
+ break;
+
+ case TIMER_SCALER: /* 0x300 */
+ *data = gpt_scaler - (now() - gpt_scaler_start);
+ break;
+
+ case TIMER_SCLOAD: /* 0x304 */
+ *data = gpt_scaler;
+ break;
+
+ case LEON2_CONFIG: /* 0x308 */
+ *data = 0x700310;
+ break;
+
+ case TIMER_TIMER1: /* 0x310 */
+ *data = gpt_counter[0];
+ break;
+
+ case TIMER_RELOAD1: /* 0x314 */
+ *data = gpt_reload[0];
+ break;
+
+ case TIMER_CTRL1: /* 0x318 */
+ *data = gpt_ctrl[0];
+ break;
+
+ case TIMER_TIMER2: /* 0x320 */
+ *data = gpt_counter[1];
+ break;
+
+ case TIMER_RELOAD2: /* 0x324 */
+ *data = gpt_reload[1];
+ break;
+
+ case TIMER_CTRL2: /* 0x328 */
+ *data = gpt_ctrl[1];
+ break;
+
+ case CACHE_CTRL: /* 0x328 */
+ *data = cache_ctrl;
+ break;
+
+ default:
+ *data = 0;
+ break;
+ }
+
+ if (sis_verbose > 1)
+ printf("APB read a: %08x, d: %08x\n", addr, *data);
+
+ return MOK;
+}
+
+static int
+apb_write(uint32 addr, uint32 data)
+{
+ if (sis_verbose > 1)
+ printf("APB write a: %08x, d: %08x\n",addr,data);
+ switch (addr & 0xff) {
+
+ case APBUART_RXTX: /* 0x100 */
+ case APBUART_STATUS: /* 0x104 */
+ grlib_write_uart(addr, data);
+ break;
+
+ case IRQCTRL_IFR: /* 0x208 */
+ irqctrl_ifr = data & 0xfffe;
+ chk_irq();
+ break;
+
+ case IRQCTRL_ICR: /* 0x20C */
+ irqctrl_ipr &= ~data & 0x0fffe;
+ chk_irq();
+ break;
+
+ case IRQCTRL_IMR: /* 0x240 */
+ irqctrl_imr = data & 0x7ffe;
+ chk_irq();
+ break;
+
+ case TIMER_SCLOAD: /* 0x304 */
+ gpt_scaler_set(data);
+ break;
+
+ case TIMER_TIMER1: /* 0x310 */
+ gpt_counter[0] = data;
+ break;
+
+ case TIMER_RELOAD1: /* 0x314 */
+ gpt_reload[0] = data;
+ break;
+
+ case TIMER_CTRL1: /* 0x318 */
+ timer_ctrl(data, 0);
+ break;
+
+ case TIMER_TIMER2: /* 0x320 */
+ gpt_counter[1] = data;
+ break;
+
+ case TIMER_RELOAD2: /* 0x324 */
+ gpt_reload[1] = data;
+ break;
+
+ case TIMER_CTRL2: /* 0x328 */
+ timer_ctrl(data, 1);
+ break;
+
+ case POWER_DOWN: /* 0x328 */
+ wait_for_irq();
+ break;
+
+ case CACHE_CTRL: /* 0x328 */
+ cache_ctrl = data & 0x1000f;
+ break;
+
+ default:
+ break;
+ }
+ return MOK;
+}
+
+
+/* APBUART. */
+
+static int ifd1 = -1, ofd1 = -1;
+
+static void
+init_stdio(void)
+{
+ if (dumbio)
+ return;
+ if (ifd1 == 0 && f1open) {
+ tcsetattr(0, TCSANOW, &ioc1);
+ tcflush(ifd1, TCIFLUSH);
+ }
+}
+
+static void
+restore_stdio(void)
+{
+ if (dumbio)
+ return;
+ if (ifd1 == 0 && f1open && tty_setup)
+ tcsetattr(0, TCSANOW, &iocold1);
+}
+
+#define DO_STDIO_READ( _fd_, _buf_, _len_ ) \
+ ( dumbio || nouartrx \
+ ? (0) /* no bytes read, no delay */ \
+ : (_fd_) == 1 && callback ? \
+ callback->read_stdin (callback, _buf_, _len_) : \
+ read( _fd_, _buf_, _len_ ) )
+
+static void
+port_init(void)
+{
+
+ f1in = stdin;
+ f1out = stdout;
+ if (uart_dev1[0] != 0)
+ if ((fd1 = open(uart_dev1, O_RDWR | O_NONBLOCK)) < 0) {
+ printf("Warning, couldn't open output device %s\n", uart_dev1);
+ } else {
+ if (sis_verbose)
+ printf("serial port A on %s\n", uart_dev1);
+ f1in = f1out = fdopen(fd1, "r+");
+ setbuf(f1out, NULL);
+ f1open = 1;
+ }
+ if (f1in) ifd1 = fileno(f1in);
+ if (ifd1 == 0) {
+ if (callback && !callback->isatty(callback, ifd1)) {
+ tty_setup = 0;
+ }
+ if (sis_verbose)
+ printf("serial port A on stdin/stdout\n");
+ if (!dumbio) {
+ tcgetattr(ifd1, &ioc1);
+ if (tty_setup) {
+ iocold1 = ioc1;
+ ioc1.c_lflag &= ~(ICANON | ECHO);
+ ioc1.c_cc[VMIN] = 0;
+ ioc1.c_cc[VTIME] = 0;
+ }
+ }
+ f1open = 1;
+ }
+
+ if (f1out) {
+ ofd1 = fileno(f1out);
+ if (!dumbio && tty_setup && ofd1 == 1) setbuf(f1out, NULL);
+ }
+
+ wnuma = 0;
+
+}
+
+static uint32
+grlib_read_uart(uint32 addr)
+{
+
+ unsigned tmp;
+
+ tmp = 0;
+ switch (addr & 0xfff) {
+
+ case 0x070: /* UART 1 RX/TX */
+#ifndef _WIN32
+#ifdef FAST_UART
+
+ if (aind < anum) {
+ if ((aind + 1) < anum)
+ set_irq(3);
+ return (uint32) aq[aind++];
+ } else {
+ if (f1open) {
+ anum = DO_STDIO_READ(ifd1, aq, UARTBUF);
+ }
+ else {
+ anum = 0;
+ }
+ if (anum > 0) {
+ aind = 0;
+ if ((aind + 1) < anum)
+ set_irq(3);
+ return (uint32) aq[aind++];
+ } else {
+ return (uint32) aq[aind];
+ }
+
+ }
+#else
+ tmp = uarta_data;
+ uarta_data &= ~UART_DR;
+ uart_stat_reg &= ~UARTA_DR;
+ return tmp;
+#endif
+#else
+ return 0;
+#endif
+ break;
+
+ case 0x074: /* UART status register */
+#ifndef _WIN32
+#ifdef FAST_UART
+
+ Ucontrol = 0;
+ if (aind < anum) {
+ Ucontrol |= 0x00000001;
+ } else {
+ if (f1open) {
+ anum = DO_STDIO_READ(ifd1, aq, UARTBUF);
+ }
+ else {
+ anum = 0;
+ }
+ if (anum > 0) {
+ Ucontrol |= 0x00000001;
+ aind = 0;
+ set_irq(3);
+ }
+ }
+ Ucontrol |= 0x00000006;
+ return Ucontrol;
+#else
+ return uart_stat_reg;
+#endif
+#else
+ return 0x00060006;
+#endif
+ break;
+ default:
+ if (sis_verbose)
+ printf("Read from unimplemented LEON2 register (%x)\n", addr);
+
+ }
+ return (0);
+}
+
+static void
+grlib_write_uart(uint32 addr, uint32 data)
+{
+ unsigned char c;
+
+ c = (unsigned char) data;
+ switch (addr & 0xfff) {
+
+ case 0x070: /* UART A */
+#ifdef FAST_UART
+ if (f1open) {
+ if (wnuma < UARTBUF)
+ wbufa[wnuma++] = c;
+ else {
+ while (wnuma) {
+ if (ofd1 == 1 && callback)
+ wnuma -= callback->write_stdout(callback, wbufa, wnuma);
+ else
+ wnuma -= fwrite(wbufa, 1, wnuma, f1out);
+ }
+ wbufa[wnuma++] = c;
+ }
+ }
+ set_irq(3);
+#else
+ if (uart_stat_reg & UARTA_SRE) {
+ uarta_sreg = c;
+ uart_stat_reg &= ~UARTA_SRE;
+ event(uarta_tx, 0, UART_TX_TIME);
+ } else {
+ uarta_hreg = c;
+ uart_stat_reg &= ~UARTA_HRE;
+ }
+#endif
+ break;
+
+ case 0x074: /* UART status register */
+#ifndef FAST_UART
+ uart_stat_reg &= 1;
+#endif
+ break;
+ default:
+ if (sis_verbose)
+ printf("Write to unimplemented APB register (%x)\n", addr);
+
+ }
+}
+
+static void
+flush_uart(void)
+{
+ while (wnuma && f1open) {
+ if (ofd1 == 1 && callback) {
+ wnuma -= callback->write_stdout(callback, wbufa, wnuma);
+ callback->flush_stdout(callback);
+ }
+ else
+ wnuma -= fwrite(wbufa, 1, wnuma, f1out);
+ }
+}
+
+static void
+uarta_tx(void)
+{
+ while (f1open) {
+ if (ofd1 == 1 && callback) {
+ while (callback->write_stdout(callback, &uarta_sreg, 1) != 1);
+ }
+ else {
+ while (fwrite(&uarta_sreg, 1, 1, f1out) != 1);
+ }
+ }
+ if (uart_stat_reg & UARTA_HRE) {
+ uart_stat_reg |= UARTA_SRE;
+ } else {
+ uarta_sreg = uarta_hreg;
+ uart_stat_reg |= UARTA_HRE;
+ event(uarta_tx, 0, UART_TX_TIME);
+ }
+ set_irq(3);
+}
+
+static void
+uart_rx(caddr_t arg)
+{
+ int32 rsize;
+ char rxd;
+
+ rsize = 0;
+ if (f1open)
+ rsize = DO_STDIO_READ(ifd1, &rxd, 1);
+ else
+ rsize = 0;
+ if (rsize > 0) {
+ uarta_data = rxd;
+ if (uart_stat_reg & UARTA_DR) {
+ uart_stat_reg |= UARTA_OR;
+ }
+ uart_stat_reg |= UARTA_DR;
+ set_irq(3);
+ }
+ event(uart_rx, 0, UART_RX_TIME);
+}
+
+static void
+uart_intr(caddr_t arg)
+{
+ /* Check for UART interrupts every 1000 clk. */
+ grlib_read_uart(APBUART_STATUS);
+ flush_uart();
+ event(uart_intr, 0, UART_FLUSH_TIME);
+}
+
+
+static void
+uart_irq_start(void)
+{
+#ifdef FAST_UART
+ event(uart_intr, 0, UART_FLUSH_TIME);
+#else
+#ifndef _WIN32
+ event(uart_rx, 0, UART_RX_TIME);
+#endif
+#endif
+}
+
+/* TIMER */
+
+static void
+gpt_intr(caddr_t arg)
+{
+ int i;
+
+ for (i = 0; i < NTIMERS; i++) {
+ if (gpt_ctrl[i] & 1) {
+ gpt_counter[i] -= 1;
+ if (gpt_counter[i] == -1) {
+ set_irq(TIMER_IRQ + i);
+ if (gpt_ctrl[i] & 2)
+ gpt_counter[i] = gpt_reload[i];
+ }
+ }
+ }
+ event(gpt_intr, 0, gpt_scaler + 1);
+ gpt_scaler_start = now();
+}
+
+static void
+gpt_init(void)
+{
+ if (sis_verbose)
+ printf("GPT started (period %d)\n\r", gpt_scaler + 1);
+}
+
+static void
+gpt_reset(void)
+{
+ event(gpt_intr, 0, gpt_scaler + 1);
+ gpt_scaler_start = now();
+}
+
+static void
+gpt_scaler_set(uint32 val)
+{
+ gpt_scaler = val & 0x0ffff; /* 16-bit scaler */
+}
+
+static void
+timer_ctrl(uint32 val, int i)
+{
+ if (val & 4) { /* reload */
+ gpt_counter[i] = gpt_reload[i];
+ }
+ gpt_ctrl[i] = val & 0xb;
+}
+
+/* Store data in host byte order. MEM points to the beginning of the
+ emulated memory; WADDR contains the index the emulated memory,
+ DATA points to words in host byte order to be stored. SZ contains log(2)
+ of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word),
+ 2 (one word), or 3 (two words); WS should return the number of wait-states. */
+
+static void
+store_bytes (unsigned char *mem, uint32 waddr, uint32 *data, int32 sz, int32 *ws)
+{
+ switch (sz) {
+ case 0:
+#ifdef HOST_LITTLE_ENDIAN
+ waddr ^= 3;
+#endif
+ mem[waddr] = *data & 0x0ff;
+ *ws = 0;
+ break;
+ case 1:
+#ifdef HOST_LITTLE_ENDIAN
+ waddr ^= 2;
+#endif
+ memcpy(&mem[waddr], data, 2);
+ *ws = 0;
+ break;
+ case 2:
+ memcpy(&mem[waddr], data, 4);
+ *ws = 0;
+ break;
+ case 3:
+ memcpy(&mem[waddr], data, 8);
+ *ws = 0;
+ break;
+ }
+}
+
+
+/* Memory emulation. */
+
+static int
+memory_iread(uint32 addr, uint32 *data, int32 *ws)
+{
+ if ((addr >= RAM_START) && (addr < RAM_END)) {
+ memcpy(data, &ramb[addr & RAM_MASK], 4);
+ *ws = 0;
+ return 0;
+ } else if (addr < ROM_END) {
+ memcpy(data, &romb[addr], 4);
+ *ws = 0;
+ return 0;
+ }
+
+ if (sis_verbose)
+ printf("Memory exception at %x (illegal address)\n", addr);
+ *ws = MEM_EX_WS;
+ return 1;
+}
+
+static int
+memory_read(uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ int32 mexc;
+
+ if ((addr >= RAM_START) && (addr < RAM_END)) {
+ memcpy(data, &ramb[addr & RAM_MASK & ~3], 4);
+ *ws = 0;
+ return 0;
+ } else if ((addr >= APBSTART) && (addr < APBEND)) {
+ mexc = apb_read(addr, data);
+ if (mexc) {
+ *ws = MEM_EX_WS;
+ } else {
+ *ws = 0;
+ }
+ return (mexc);
+ } else if (addr < ROM_END) {
+ memcpy(data, &romb[addr & ~3], 4);
+ *ws = 0;
+ return 0;
+ }
+
+ if (sis_verbose)
+ printf("Memory exception at %x (illegal address)\n", addr);
+ *ws = MEM_EX_WS;
+ return 1;
+}
+
+static int
+memory_read_asi(int32 asi, uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ return(memory_read(addr, data, sz, ws));
+}
+
+static int
+memory_write(uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ uint32 byte_addr;
+ uint32 byte_mask;
+ uint32 waddr;
+ uint32 *ram;
+ int32 mexc;
+ int i;
+ int wphit[2];
+
+ if ((addr >= RAM_START) && (addr < RAM_END)) {
+ waddr = addr & RAM_MASK;
+ store_bytes (ramb, waddr, data, sz, ws);
+ return 0;
+
+ } else if ((addr >= APBSTART) && (addr < APBEND)) {
+ if (sz != 2) {
+ *ws = MEM_EX_WS;
+ return 1;
+ }
+ apb_write(addr, *data);
+ *ws = 0;
+ return 0;
+
+ } else if (addr < ROM_END) {
+ *ws = 0;
+ store_bytes (romb, addr, data, sz, ws);
+ return 0;
+ }
+
+ *ws = MEM_EX_WS;
+ return 1;
+}
+
+static int
+memory_write_asi(int32 asi, uint32 addr, uint32 *data, int32 sz, int32 *ws)
+{
+ return memory_write(addr, data, sz, ws);
+}
+
+static unsigned char *
+get_mem_ptr(uint32 addr, uint32 size)
+{
+ if ((addr + size) < ROM_END) {
+ return &romb[addr];
+ } else if ((addr >= RAM_START) && ((addr + size) < RAM_END)) {
+ return &ramb[addr & RAM_MASK];
+ }
+
+ return (char *) -1;
+}
+
+static int
+sis_memory_write(uint32 addr, const unsigned char *data, uint32 length)
+{
+ char *mem;
+
+ if ((mem = get_mem_ptr (addr, length)) == ((char *) -1))
+ return 0;
+
+ memcpy (mem, data, length);
+ return length;
+}
+
+static int
+sis_memory_read(uint32 addr, char *data, uint32 length)
+{
+ char *mem;
+ int ws;
+
+ if (length == 4) {
+ memory_read(addr, (uint32 *) data, length, &ws);
+ return 4;
+ }
+
+ if ((mem = get_mem_ptr(addr, length)) == ((char *) -1))
+ return 0;
+
+ memcpy(data, mem, length);
+ return length;
+}
+
+static void
+boot_init (void)
+{
+ /* Generate 1 MHz RTC tick. */
+ apb_write(TIMER_SCALER, sregs.freq-1);
+ apb_write(TIMER_SCLOAD, sregs.freq-1);
+ apb_write(TIMER_TIMER1, -1);
+ apb_write(TIMER_RELOAD1, -1);
+ apb_write(TIMER_CTRL1, 0x7);
+
+ sregs.wim = 2;
+ sregs.psr = 0x000010e0;
+ sregs.r[30] = RAM_END;
+ sregs.r[14] = sregs.r[30] - 96*4;
+ cache_ctrl = 0x01000f;
+}
+
+const struct memsys leon2 = {
+ init_sim,
+ reset,
+ error_mode,
+ sim_halt,
+ exit_sim,
+ init_stdio,
+ restore_stdio,
+ memory_iread,
+ memory_read,
+ memory_read_asi,
+ memory_write,
+ memory_write_asi,
+ sis_memory_write,
+ sis_memory_read,
+ boot_init
+};
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index 0e19270..99d5286 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -181,6 +181,10 @@ main(argc, argv)
dumbio = 1;
} else if (strcmp(argv[stat], "-nouartrx") == 0) {
nouartrx = 1;
+ } else if (strcmp(argv[stat], "-leon2") == 0) {
+ ms = &leon2;
+ if (freq == 14) freq = 50;
+ cputype = CPU_LEON2;
} else if (strcmp(argv[stat], "-leon3") == 0) {
ms = &leon3;
if (freq == 14) freq = 50;
@@ -199,6 +203,9 @@ main(argc, argv)
}
switch (cputype) {
+ case CPU_LEON2:
+ printf(" LEON2 emulation enabled\n");
+ break;
case CPU_LEON3:
printf(" LEON3 emulation enabled\n");
break;
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index 0f0c487..aef501b 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -182,6 +182,7 @@ struct memsys {
#define ERROR 3
#define CTRL_C 4
+#define CPU_LEON2 2
#define CPU_LEON3 3
/* Prototypes */
@@ -261,5 +262,8 @@ extern void gen_help (void);
extern const struct memsys *ms;
+/* leon2.c */
+extern const struct memsys leon2;
+
/* leon3.c */
extern const struct memsys leon3;
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v4 05/13] sim/erc32: Fix a few compiler warnings
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (7 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 10/13] sim/erc32: Add support for LEON2 processor emulation Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-28 7:06 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 01/13] sim/erc32: Added -v command line switch for verbose output Jiri Gaisler
` (3 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
* func.c: Minor edits to remove compiler warnings.
* func.c, sis.h (exec_cmd): make second argument const char.
* func.c, sis.h (bfd_load): make argument const char.
---
sim/erc32/func.c | 16 ++++++++--------
sim/erc32/sis.h | 4 ++--
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 122ce64..0dcdf93 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -378,21 +378,20 @@ limcalc (freq)
}
return (lim);
}
-
+
int
-exec_cmd(sregs, cmd)
- char *cmd;
- struct pstate *sregs;
+exec_cmd(struct pstate *sregs, const char *cmd)
{
char *cmd1, *cmd2;
int32 stat;
uint32 len, i, clen, j;
static uint32 daddr = 0;
- char *cmdsave;
+ char *cmdsave, *cmdsave2 = NULL;
stat = OK;
cmdsave = strdup(cmd);
- if ((cmd1 = strtok(cmd, " \t")) != NULL) {
+ cmdsave2 = strdup (cmd);
+ if ((cmd1 = strtok (cmdsave2, " \t")) != NULL) {
clen = strlen(cmd1);
if (strncmp(cmd1, "bp", clen) == 0) {
for (i = 0; i < sregs->bptnum; i++) {
@@ -609,6 +608,8 @@ exec_cmd(sregs, cmd)
} else
printf("syntax error\n");
}
+ if (cmdsave2 != NULL)
+ free(cmdsave2);
if (cmdsave != NULL)
free(cmdsave);
return (stat);
@@ -1048,8 +1049,7 @@ sys_halt()
#define LOAD_ADDRESS 0
int
-bfd_load(fname)
- char *fname;
+bfd_load (const char *fname)
{
asection *section;
bfd *pbfd;
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index d21bf49..ae39ad1 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -184,7 +184,7 @@ extern struct pstate sregs;
extern void set_regi (struct pstate *sregs, int32 reg,
uint32 rval);
extern void get_regi (struct pstate *sregs, int32 reg, char *buf);
-extern int exec_cmd (struct pstate *sregs, char *cmd);
+extern int exec_cmd (struct pstate *sregs, const char *cmd);
extern void reset_stat (struct pstate *sregs);
extern void show_stat (struct pstate *sregs);
extern void init_bpt (struct pstate *sregs);
@@ -202,7 +202,7 @@ extern int check_bpt (struct pstate *sregs);
extern void reset_all (void);
extern void sys_reset (void);
extern void sys_halt (void);
-extern int bfd_load (char *fname);
+extern int bfd_load (const char *fname);
extern double get_time (void);
/* exec.c */
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v4 01/13] sim/erc32: Added -v command line switch for verbose output
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (8 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 05/13] sim/erc32: Fix a few compiler warnings Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-17 22:56 ` Mike Frysinger
2015-03-17 21:03 ` [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order Jiri Gaisler
` (2 subsequent siblings)
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
* func.c (show_stat) : Print simulation time in portable long long format.
* help.c (usage) : update usage help print-out
* sis.c (run_sim) : increase debug level with -v. Also print
simulation time in portable long long format.
* sis.h : Use stdint.h for portable 32- and 64-bit ints.
---
sim/erc32/func.c | 5 +++--
sim/erc32/help.c | 2 +-
sim/erc32/sis.c | 9 ++++++---
sim/erc32/sis.h | 10 ++++------
4 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 69d5eba..260ceff 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -28,6 +28,7 @@
#include "sis.h"
#include <dis-asm.h>
#include "sim-config.h"
+#include <inttypes.h>
#define VAL(x) strtoul(x,(char **)NULL,0)
@@ -642,8 +643,8 @@ show_stat(sregs)
sregs->nbranch;
#endif
- printf("\n Cycles : %9d\n\r", ebase.simtime - sregs->simstart);
- printf(" Instructions : %9d\n", sregs->ninst);
+ printf("\n Cycles : %9" PRIu64 "\n\r", ebase.simtime - sregs->simstart);
+ printf(" Instructions : %9" PRIu64 "\n", sregs->ninst);
#ifdef STAT
printf(" integer : %9.2f %%\n", 100.0 * (float) iinst / (float) sregs->ninst);
diff --git a/sim/erc32/help.c b/sim/erc32/help.c
index 21c2a77..9813bda 100644
--- a/sim/erc32/help.c
+++ b/sim/erc32/help.c
@@ -7,8 +7,8 @@ usage()
{
printf("usage: sis [-uart1 uart_device1] [-uart2 uart_device2]\n");
+ printf("[-sparclite] [-dumbio] [-v] \n");
printf("[-nfp] [-freq frequency] [-c batch_file] [files]\n");
- printf("[-sparclite] [-dumbio]\n");
}
void
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index ce9b3d0..931e3f3 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -30,6 +30,7 @@
#include "sis.h"
#include <dis-asm.h>
#include "sim-config.h"
+#include <inttypes.h>
#define VAL(x) strtol(x,(char **)NULL,0)
@@ -113,7 +114,7 @@ run_sim(sregs, icount, dis)
sregs->histind = 0;
}
if (dis) {
- printf(" %8u ", ebase.simtime);
+ printf(" %8" PRIu64 " ", ebase.simtime);
dis_mem(sregs->pc, 1, &dinfo);
}
}
@@ -205,6 +206,8 @@ main(argc, argv)
#endif
} else if (strcmp(argv[stat], "-dumbio") == 0) {
dumbio = 1;
+ } else if (strcmp(argv[stat], "-v") == 0) {
+ sis_verbose += 1;
} else {
printf("unknown option %s\n", argv[stat]);
usage();
@@ -271,7 +274,7 @@ main(argc, argv)
case CTRL_C:
printf("\b\bInterrupt!\n");
case TIME_OUT:
- printf(" Stopped at time %d (%.3f ms)\n", ebase.simtime,
+ printf(" Stopped at time %" PRIu64 " (%.3f ms)\n", ebase.simtime,
((double) ebase.simtime / (double) sregs.freq) / 1000.0);
break;
case BPT_HIT:
@@ -281,7 +284,7 @@ main(argc, argv)
case ERROR:
printf("IU in error mode (%d)\n", sregs.trap);
stat = 0;
- printf(" %8d ", ebase.simtime);
+ printf(" %8" PRIu64 " ", ebase.simtime);
dis_mem(sregs.pc, 1, &dinfo);
break;
default:
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index 6820cb4..74466ae 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -24,7 +24,8 @@
#include "gdb/callback.h"
#include "gdb/remote-sim.h"
#include <sim-config.h>
-
+#include <stdint.h>
+
#if WITH_HOST_BYTE_ORDER == BIG_ENDIAN
#define HOST_BIG_ENDIAN
#else
@@ -56,11 +57,8 @@ typedef unsigned int uint32; /* 32-bit unsigned int */
typedef float float32; /* 32-bit float */
typedef double float64; /* 64-bit float */
-/* FIXME: what about host compilers that don't support 64-bit ints? */
-typedef unsigned long long uint64; /* 64-bit unsigned int */
-typedef long long int64; /* 64-bit signed int */
-
-#define UINT64_MAX 18446744073709551615ULL
+typedef uint64_t uint64; /* 64-bit unsigned int */
+typedef int64_t int64; /* 64-bit signed int */
struct pstate {
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* Re: [PATCH v4 01/13] sim/erc32: Added -v command line switch for verbose output
2015-03-17 21:03 ` [PATCH v4 01/13] sim/erc32: Added -v command line switch for verbose output Jiri Gaisler
@ 2015-03-17 22:56 ` Mike Frysinger
0 siblings, 0 replies; 31+ messages in thread
From: Mike Frysinger @ 2015-03-17 22:56 UTC (permalink / raw)
To: Jiri Gaisler; +Cc: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 1182 bytes --]
On 17 Mar 2015 22:02, Jiri Gaisler wrote:
> * func.c (show_stat) : Print simulation time in portable long long format.
>
> * help.c (usage) : update usage help print-out
>
> * sis.c (run_sim) : increase debug level with -v. Also print
> simulation time in portable long long format.
>
> * sis.h : Use stdint.h for portable 32- and 64-bit ints.
style notes here:
- should have date+author to start with
- wrapped at <80 cols
- no space before the colon
- each entry should be a full sentence:
- first world capitialized
- period at the end
- no blank lines between the entries
so this would be written as:
2015-03-17 Jiri Gaisler <jiri@gaisler.se>
* func.c (show_stat): Print simulation time in portable long long
format.
* help.c (usage): Update usage help print-out.
* sis.c (run_sim): Increase debug level with -v. Also print
simulation time in portable long long format.
* sis.h: Use stdint.h for portable 32- and 64-bit ints.
i say this not because i like to be strict, but so that i don't have to rewrite
things before committing ;). the GNU style dictates these points, not i.
pushed this now, thanks!
-mike
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (9 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 01/13] sim/erc32: Added -v command line switch for verbose output Jiri Gaisler
@ 2015-03-17 21:03 ` Jiri Gaisler
2015-03-22 22:46 ` Mike Frysinger
2015-03-17 21:04 ` [PATCH v4 13/13] Add watchpoint support to gdb simulator interface Jiri Gaisler
2015-03-17 21:04 ` [PATCH v4 08/13] sim/erc32: Move local extern declarations into sis.h Jiri Gaisler
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:03 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Change data ordering in emulated memory from target order (big endian)
to host order. Improves performance and simplifies most memory
operations. Requires some byte twisting during stores on little
endian hosts (intel).
* erc32.c (fetch_bytes): Remove. (store_bytes) Remove byte twisting.
(memory_read) Access memory directly. (extract_short,
extract_short_signed, extract_byte, extract_byte_signed) New
function for for sub-word LD instructions.
* func.c (disp_ctrl, dis_mem): Ajust print-out to new data endian.
* interf.c (sim_open): Convert endian when gdb writes to memory.
* sim-main.c : New file. Pull in sim-endian.c to use common endian conversions.
---
sim/erc32/Makefile.in | 8 +--
sim/erc32/erc32.c | 168 ++++++++++++--------------------------------------
sim/erc32/exec.c | 60 +++++++++++++++---
sim/erc32/func.c | 55 +++++++++++------
sim/erc32/interf.c | 30 +++++++++
sim/erc32/sim-main.c | 26 ++++++++
sim/erc32/sis.c | 4 ++
7 files changed, 189 insertions(+), 162 deletions(-)
create mode 100644 sim/erc32/sim-main.c
diff --git a/sim/erc32/Makefile.in b/sim/erc32/Makefile.in
index 108e8b6..e8a8f18 100644
--- a/sim/erc32/Makefile.in
+++ b/sim/erc32/Makefile.in
@@ -21,7 +21,10 @@
TERMCAP_LIB = @TERMCAP@
READLINE_LIB = @READLINE@
-SIM_OBJS = exec.o erc32.o func.o help.o float.o interf.o
+# `sis' doesn't need interf.o.
+SIS_OFILES = exec.o erc32.o func.o help.o float.o sim-main.o
+
+SIM_OBJS = $(SIS_OFILES) interf.o
SIM_RUN_OBJS = sis.o
SIM_EXTRA_LIBS = $(READLINE_LIB) $(TERMCAP_LIB) -lm
SIM_EXTRA_ALL = sis
@@ -35,9 +38,6 @@ SIM_EXTRA_CFLAGS = -DFAST_UART -I$(srcroot)
## COMMON_POST_CONFIG_FRAG
-# `sis' doesn't need interf.o.
-SIS_OFILES = exec.o erc32.o func.o help.o float.o
-
sis: sis.o $(SIS_OFILES) $(COMMON_OBJS) $(LIBDEPS)
$(CC) $(ALL_CFLAGS) -o sis \
sis.o $(SIS_OFILES) $(COMMON_OBJS) $(EXTRA_LIBS)
diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c
index 6b771b4..8c0ddd3 100644
--- a/sim/erc32/erc32.c
+++ b/sim/erc32/erc32.c
@@ -296,11 +296,8 @@ static void gpt_reload_set (uint32 val);
static void timer_ctrl (uint32 val);
static unsigned char *
get_mem_ptr (uint32 addr, uint32 size);
-
-static void fetch_bytes (int asi, unsigned char *mem,
- uint32 *data, int sz);
-
-static void store_bytes (unsigned char *mem, uint32 *data, int sz);
+static void store_bytes (unsigned char *mem, uint32 waddr,
+ uint32 *data, int sz, int32 *ws);
extern int ext_irl;
@@ -1524,123 +1521,43 @@ timer_ctrl(val)
gpt_start();
}
-
-/* Retrieve data from target memory. MEM points to location from which
- to read the data; DATA points to words where retrieved data will be
- stored in host byte order. SZ contains log(2) of the number of bytes
- to retrieve, and can be 0 (1 byte), 1 (one half-word), 2 (one word),
- or 3 (two words). */
+/* Store data in host byte order. MEM points to the beginning of the
+ emulated memory; WADDR contains the index the emulated memory,
+ DATA points to words in host byte order to be stored. SZ contains log(2)
+ of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word),
+ 2 (one word), or 3 (two words); WS should return the number of wait-states. */
static void
-fetch_bytes (asi, mem, data, sz)
- int asi;
+store_bytes (mem, waddr, data, sz, ws)
unsigned char *mem;
+ uint32 waddr;
uint32 *data;
- int sz;
+ int32 sz;
+ int32 *ws;
{
- if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN
- || asi == 8 || asi == 9) {
- switch (sz) {
- case 3:
- data[1] = (((uint32) mem[7]) & 0xff) |
- ((((uint32) mem[6]) & 0xff) << 8) |
- ((((uint32) mem[5]) & 0xff) << 16) |
- ((((uint32) mem[4]) & 0xff) << 24);
- /* Fall through to 2 */
- case 2:
- data[0] = (((uint32) mem[3]) & 0xff) |
- ((((uint32) mem[2]) & 0xff) << 8) |
- ((((uint32) mem[1]) & 0xff) << 16) |
- ((((uint32) mem[0]) & 0xff) << 24);
- break;
- case 1:
- data[0] = (((uint32) mem[1]) & 0xff) |
- ((((uint32) mem[0]) & 0xff) << 8);
- break;
+ switch (sz) {
case 0:
- data[0] = mem[0] & 0xff;
- break;
-
- }
- } else {
- switch (sz) {
- case 3:
- data[1] = ((((uint32) mem[7]) & 0xff) << 24) |
- ((((uint32) mem[6]) & 0xff) << 16) |
- ((((uint32) mem[5]) & 0xff) << 8) |
- (((uint32) mem[4]) & 0xff);
- /* Fall through to 4 */
- case 2:
- data[0] = ((((uint32) mem[3]) & 0xff) << 24) |
- ((((uint32) mem[2]) & 0xff) << 16) |
- ((((uint32) mem[1]) & 0xff) << 8) |
- (((uint32) mem[0]) & 0xff);
+#ifdef HOST_LITTLE_ENDIAN
+ waddr ^= 3;
+#endif
+ mem[waddr] = *data & 0x0ff;
+ *ws = mem_ramw_ws + 3;
break;
case 1:
- data[0] = ((((uint32) mem[1]) & 0xff) << 8) |
- (((uint32) mem[0]) & 0xff);
- break;
- case 0:
- data[0] = mem[0] & 0xff;
+#ifdef HOST_LITTLE_ENDIAN
+ waddr ^= 2;
+#endif
+ memcpy(&mem[waddr], data, 2);
+ *ws = mem_ramw_ws + 3;
break;
- }
- }
-}
-
-
-/* Store data in target byte order. MEM points to location to store data;
- DATA points to words in host byte order to be stored. SZ contains log(2)
- of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word),
- 2 (one word), or 3 (two words). */
-
-static void
-store_bytes (mem, data, sz)
- unsigned char *mem;
- uint32 *data;
- int sz;
-{
- if (CURRENT_TARGET_BYTE_ORDER == LITTLE_ENDIAN) {
- switch (sz) {
- case 3:
- mem[7] = (data[1] >> 24) & 0xff;
- mem[6] = (data[1] >> 16) & 0xff;
- mem[5] = (data[1] >> 8) & 0xff;
- mem[4] = data[1] & 0xff;
- /* Fall through to 2 */
case 2:
- mem[3] = (data[0] >> 24) & 0xff;
- mem[2] = (data[0] >> 16) & 0xff;
- /* Fall through to 1 */
- case 1:
- mem[1] = (data[0] >> 8) & 0xff;
- /* Fall through to 0 */
- case 0:
- mem[0] = data[0] & 0xff;
+ memcpy(&mem[waddr], data, 4);
+ *ws = mem_ramw_ws;
break;
- }
- } else {
- switch (sz) {
case 3:
- mem[7] = data[1] & 0xff;
- mem[6] = (data[1] >> 8) & 0xff;
- mem[5] = (data[1] >> 16) & 0xff;
- mem[4] = (data[1] >> 24) & 0xff;
- /* Fall through to 2 */
- case 2:
- mem[3] = data[0] & 0xff;
- mem[2] = (data[0] >> 8) & 0xff;
- mem[1] = (data[0] >> 16) & 0xff;
- mem[0] = (data[0] >> 24) & 0xff;
- break;
- case 1:
- mem[1] = data[0] & 0xff;
- mem[0] = (data[0] >> 8) & 0xff;
- break;
- case 0:
- mem[0] = data[0] & 0xff;
+ memcpy(&mem[waddr], data, 8);
+ *ws = 2 * mem_ramw_ws + STD_WS;
break;
-
- }
}
}
@@ -1670,7 +1587,7 @@ memory_read(asi, addr, data, sz, ws)
#endif
if ((addr >= mem_ramstart) && (addr < (mem_ramstart + mem_ramsz))) {
- fetch_bytes (asi, &ramb[addr & mem_rammask], data, sz);
+ memcpy(data, &ramb[addr & mem_rammask & ~3], 4);
*ws = mem_ramr_ws;
return (0);
} else if ((addr >= MEC_START) && (addr < MEC_END)) {
@@ -1688,7 +1605,7 @@ memory_read(asi, addr, data, sz, ws)
} else if (era) {
if ((addr < 0x100000) ||
((addr>= 0x80000000) && (addr < 0x80100000))) {
- fetch_bytes (asi, &romb[addr & ROM_MASK], data, sz);
+ memcpy(data, &romb[addr & ROM_MASK & ~3], 4);
*ws = 4;
return (0);
} else if ((addr >= 0x10000000) &&
@@ -1699,13 +1616,15 @@ memory_read(asi, addr, data, sz, ws)
}
} else if (addr < mem_romsz) {
- fetch_bytes (asi, &romb[addr], data, sz);
+ *data = *((uint32 *) & (romb[addr & ~3]));
+ memcpy(data, &romb[addr & ~3], 4);
*ws = mem_romr_ws;
return (0);
#else
} else if (addr < mem_romsz) {
- fetch_bytes (asi, &romb[addr], data, sz);
+ *data = *((uint32 *) & (romb[addr & ~3]));
+ memcpy(data, &romb[addr & ~3], 4);
*ws = mem_romr_ws;
return (0);
#endif
@@ -1768,21 +1687,10 @@ memory_write(asi, addr, data, sz, ws)
}
}
- store_bytes (&ramb[addr & mem_rammask], data, sz);
-
- switch (sz) {
- case 0:
- case 1:
- *ws = mem_ramw_ws + 3;
- break;
- case 2:
- *ws = mem_ramw_ws;
- break;
- case 3:
- *ws = 2 * mem_ramw_ws + STD_WS;
- break;
- }
+ waddr = addr & mem_rammask;
+ store_bytes (ramb, waddr, data, sz, ws);
return (0);
+
} else if ((addr >= MEC_START) && (addr < MEC_END)) {
if ((sz != 2) || (asi != 0xb)) {
set_sfsr(MEC_ACC, addr, asi, 0);
@@ -1805,7 +1713,7 @@ memory_write(asi, addr, data, sz, ws)
((addr < 0x100000) || ((addr >= 0x80000000) && (addr < 0x80100000)))) {
addr &= ROM_MASK;
*ws = sz == 3 ? 8 : 4;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return (0);
} else if ((addr >= 0x10000000) &&
(addr < (0x10000000 + (512 << (mec_iocr & 0x0f)))) &&
@@ -1821,7 +1729,7 @@ memory_write(asi, addr, data, sz, ws)
*ws = mem_romw_ws + 1;
if (sz == 3)
*ws += mem_romw_ws + STD_WS;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return (0);
#else
@@ -1832,7 +1740,7 @@ memory_write(asi, addr, data, sz, ws)
*ws = mem_romw_ws + 1;
if (sz == 3)
*ws += mem_romw_ws + STD_WS;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return (0);
#endif
diff --git a/sim/erc32/exec.c b/sim/erc32/exec.c
index 275218a..38e1045 100644
--- a/sim/erc32/exec.c
+++ b/sim/erc32/exec.c
@@ -370,8 +370,38 @@ div64 (uint32 n1_hi, uint32 n1_low, uint32 n2, uint32 *result, int msigned)
}
+static int
+extract_short (uint32 data, uint32 address)
+{
+ return ((data >> ((2 - (address & 2)) * 8)) & 0xffff);
+}
+
+static int
+extract_short_signed (uint32 data, uint32 address)
+{
+ uint32 tmp = ((data >> ((2 - (address & 2)) * 8)) & 0xffff);
+ if (tmp & 0x8000)
+ tmp |= 0xffff0000;
+ return tmp;
+}
+
+static int
+extract_byte (uint32 data, uint32 address)
+{
+ return ((data >> ((3 - (address & 3)) * 8)) & 0xff);
+}
+
+static int
+extract_byte_signed (uint32 data, uint32 address)
+{
+ uint32 tmp = ((data >> ((3 - (address & 3)) * 8)) & 0xff);
+ if (tmp & 0x80)
+ tmp |= 0xffffff00;
+ return tmp;
+}
+
int
-dispatch_instruction(sregs)
+dispatch_instruction (sregs)
struct pstate *sregs;
{
@@ -1077,7 +1107,8 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_PRIVI;
break;
}
- sregs->psr = (rs1 ^ operand2) & 0x00f03fff;
+ sregs->psr = (sregs->psr & 0xff000000) |
+ (rs1 ^ operand2) & 0x00f03fff;
break;
case WRWIM:
if (!(sregs->psr & PSR_S)) {
@@ -1213,8 +1244,10 @@ dispatch_instruction(sregs)
else
rdd = &(sregs->g[rd]);
}
- mexc = memory_read(asi, address, ddata, 3, &ws);
- sregs->hold += ws * 2;
+ mexc = memory_read(asi, address, ddata, 2, &ws);
+ sregs->hold += ws;
+ mexc |= memory_read(asi, address+4, &ddata[1], 2, &ws);
+ sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1252,6 +1285,7 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
+ data = extract_byte(data, address);
*rdd = data;
data = 0x0ff;
mexc = memory_write(asi, address, &data, 0, &ws);
@@ -1274,8 +1308,10 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
- if ((op3 == LDSB) && (data & 0x80))
- data |= 0xffffff00;
+ if (op3 == LDSB)
+ data = extract_byte_signed(data, address);
+ else
+ data = extract_byte(data, address);
*rdd = data;
break;
case LDSHA:
@@ -1293,8 +1329,10 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
- if ((op3 == LDSH) && (data & 0x8000))
- data |= 0xffff0000;
+ if (op3 == LDSH)
+ data = extract_short_signed(data, address);
+ else
+ data = extract_short(data, address);
*rdd = data;
break;
case LDF:
@@ -1337,8 +1375,10 @@ dispatch_instruction(sregs)
((sregs->frs2 >> 1) == (rd >> 1)))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = memory_read(asi, address, ddata, 3, &ws);
- sregs->hold += ws * 2;
+ mexc = memory_read(asi, address, ddata, 2, &ws);
+ sregs->hold += ws;
+ mexc |= memory_read(asi, address+4, &ddata[1], 2, &ws);
+ sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
sregs->trap = TRAP_DEXC;
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index e42b0ec..122ce64 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -29,7 +29,7 @@
#include <dis-asm.h>
#include "sim-config.h"
#include <inttypes.h>
-
+#include <sim-basics.h>
#define VAL(x) strtoul(x,(char **)NULL,0)
@@ -787,15 +787,15 @@ disp_ctrl(sregs)
struct pstate *sregs;
{
- unsigned char i[4];
+ uint32 i;
printf("\n psr: %08X wim: %08X tbr: %08X y: %08X\n",
sregs->psr, sregs->wim, sregs->tbr, sregs->y);
- sis_memory_read(sregs->pc, i, 4);
- printf("\n pc: %08X = %02X%02X%02X%02X ", sregs->pc,i[0],i[1],i[2],i[3]);
+ sis_memory_read(sregs->pc, (char *) &i, 4);
+ printf("\n pc: %08X = %08X ", sregs->pc, i);
print_insn_sparc_sis(sregs->pc, &dinfo);
- sis_memory_read(sregs->npc, i, 4);
- printf("\n npc: %08X = %02X%02X%02X%02X ",sregs->npc,i[0],i[1],i[2],i[3]);
+ sis_memory_read(sregs->npc, (char *) &i, 4);
+ printf("\n npc: %08X = %08X ", sregs->npc, i);
print_insn_sparc_sis(sregs->npc, &dinfo);
if (sregs->err_mode)
printf("\n IU in error mode");
@@ -809,22 +809,31 @@ disp_mem(addr, len)
{
uint32 i;
- unsigned char data[4];
+ union {
+ unsigned char u8[4];
+ uint32 u32;
+ } data;
uint32 mem[4], j;
char *p;
+ int end;
+#ifdef HOST_LITTLE_ENDIAN
+ end = 3;
+#else
+ end = 0;
+#endif
for (i = addr & ~3; i < ((addr + len) & ~3); i += 16) {
printf("\n %8X ", i);
for (j = 0; j < 4; j++) {
- sis_memory_read((i + (j * 4)), data, 4);
- printf("%02x%02x%02x%02x ", data[0],data[1],data[2],data[3]);
- mem[j] = *((int *) &data);
+ sis_memory_read((i + (j * 4)), data.u8, 4);
+ printf("%08x ", data.u32);
+ mem[j] = data.u32;
}
printf(" ");
p = (char *) mem;
for (j = 0; j < 16; j++) {
- if (isprint(p[j]))
- putchar(p[j]);
+ if (isprint(p[j ^ end]))
+ putchar(p[j ^ end]);
else
putchar('.');
}
@@ -839,11 +848,14 @@ dis_mem(addr, len, info)
struct disassemble_info *info;
{
uint32 i;
- unsigned char data[4];
+ union {
+ unsigned char u8[4];
+ uint32 u32;
+ } data;
for (i = addr & -3; i < ((addr & -3) + (len << 2)); i += 4) {
- sis_memory_read(i, data, 4);
- printf(" %08x %02x%02x%02x%02x ", i, data[0],data[1],data[2],data[3]);
+ sis_memory_read(i, data.u8, 4);
+ printf(" %08x %08x ", i, data.u32);
print_insn_sparc_sis(i, info);
if (i >= 0xfffffffc) break;
printf("\n");
@@ -1042,6 +1054,7 @@ bfd_load(fname)
asection *section;
bfd *pbfd;
const bfd_arch_info_type *arch;
+ int i;
pbfd = bfd_openr(fname, 0);
@@ -1115,14 +1128,20 @@ bfd_load(fname)
fptr = 0;
while (section_size > 0) {
- char buffer[1024];
int count;
+ union {
+ unsigned char u8[1024];
+ uint32 u32[256];
+ } buffer;
count = min(section_size, 1024);
- bfd_get_section_contents(pbfd, section, buffer, fptr, count);
+ bfd_get_section_contents(pbfd, section, buffer.u8, fptr, count);
- sis_memory_write(section_address, buffer, count);
+#ifdef HOST_LITTLE_ENDIAN
+ for (i = 0; i < (count / 4); i++) buffer.u32[i] = T2H_4(buffer.u32[i]); // endian swap
+#endif
+ sis_memory_write(section_address, buffer.u8, count);
section_address += count;
fptr += count;
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 608b224..97540a9 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -30,6 +30,7 @@
#include "bfd.h"
#include <dis-asm.h>
#include "sim-config.h"
+#include <sim-basics.h>
#include "gdb/remote-sim.h"
#include "gdb/signals.h"
@@ -266,7 +267,11 @@ sim_open (kind, callback, abfd, argv)
sregs.freq = freq ? freq : 15;
termsave = fcntl(0, F_GETFL, 0);
INIT_DISASSEMBLE_INFO(dinfo, stdout,(fprintf_ftype)fprintf);
+#ifdef HOST_LITTLE_ENDIAN
+ dinfo.endian = BFD_ENDIAN_LITTLE;
+#else
dinfo.endian = BFD_ENDIAN_BIG;
+#endif
reset_all();
ebase.simtime = 0;
init_sim();
@@ -356,7 +361,19 @@ sim_write(sd, mem, buf, length)
const unsigned char *buf;
int length;
{
+#ifdef HOST_LITTLE_ENDIAN
+ int *ibufp = (int *) buf;
+ int ibuf[8192];
+ int i, len;
+
+ if (length >= 4)
+ for (i = 0; i < length; i += 4) {
+ ibuf[i] = T2H_4(ibufp[i]);
+ }
+ return (sis_memory_write(mem, (char *) ibuf, length));
+#else
return (sis_memory_write(mem, buf, length));
+#endif
}
int
@@ -366,7 +383,20 @@ sim_read(sd, mem, buf, length)
unsigned char *buf;
int length;
{
+#ifdef HOST_LITTLE_ENDIAN
+ int *ibuf = (int *) buf;
+ int i, len;
+
+ len = sis_memory_read(mem, buf, length);
+ if (length >= 4)
+ for (i = 0; i < length; i += 4) {
+ *ibuf = H2T_4(*ibuf);
+ ibuf++;
+ }
+ return (len);
+#else
return (sis_memory_read(mem, buf, length));
+#endif
}
void
diff --git a/sim/erc32/sim-main.c b/sim/erc32/sim-main.c
new file mode 100644
index 0000000..860e7db
--- /dev/null
+++ b/sim/erc32/sim-main.c
@@ -0,0 +1,26 @@
+/* SIS, SPARC instruction simulator
+
+ Copyright 2002-2015 Free Software Foundation, Inc.
+
+ Contributed by Jiri Gaisler.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+
+#include <sim-assert.h>
+#undef ASSERT
+#define ASSERT(x) if (0) {}
+#include <sim-endian.c>
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index 931e3f3..dcb5ebf 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -227,7 +227,11 @@ main(argc, argv)
sregs.freq = freq;
INIT_DISASSEMBLE_INFO(dinfo, stdout, (fprintf_ftype) fprintf);
+#ifdef HOST_LITTLE_ENDIAN
+ dinfo.endian = BFD_ENDIAN_LITTLE;
+#else
dinfo.endian = BFD_ENDIAN_BIG;
+#endif
termsave = fcntl(0, F_GETFL, 0);
using_history();
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* Re: [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order.
2015-03-17 21:03 ` [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order Jiri Gaisler
@ 2015-03-22 22:46 ` Mike Frysinger
2015-03-23 9:01 ` Jiri Gaisler
` (2 more replies)
0 siblings, 3 replies; 31+ messages in thread
From: Mike Frysinger @ 2015-03-22 22:46 UTC (permalink / raw)
To: Jiri Gaisler; +Cc: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 1900 bytes --]
On 17 Mar 2015 22:02, Jiri Gaisler wrote:
> --- a/sim/erc32/erc32.c
> +++ b/sim/erc32/erc32.c
>
> static void
> -fetch_bytes (asi, mem, data, sz)
> +store_bytes (mem, waddr, data, sz, ws)
as some point we'll want to switch over to sim-core.c and then all these
accessor funcs you have would go away. but we don't need to do that now.
> +#ifdef HOST_LITTLE_ENDIAN
> + waddr ^= 3;
> +#endif
> + mem[waddr] = *data & 0x0ff;
doesn't this assume the target is big endian ? this shows up a few times in
the changes to this file.
> + memcpy(&mem[waddr], data, 2);
space before the (. this shows up a few times in the changes to this file.
> + *data = *((uint32 *) & (romb[addr & ~3]));
broken indentation, and you need to use the union/memcpy logic. this shows up a
few times in the changes to this file.
> + mexc = memory_read(asi, address, ddata, 2, &ws);
you should scan the whole change for new lines that are missing the space before
the (
> sregs.freq = freq ? freq : 15;
> termsave = fcntl(0, F_GETFL, 0);
> INIT_DISASSEMBLE_INFO(dinfo, stdout,(fprintf_ftype)fprintf);
> +#ifdef HOST_LITTLE_ENDIAN
> + dinfo.endian = BFD_ENDIAN_LITTLE;
> +#else
> dinfo.endian = BFD_ENDIAN_BIG;
> +#endif
can't you get the target endian info via the bfd library ?
> +#ifdef HOST_LITTLE_ENDIAN
> + int *ibufp = (int *) buf;
needs a union
> + int ibuf[8192];
> + int i, len;
> +
> + if (length >= 4)
> + for (i = 0; i < length; i += 4) {
> + ibuf[i] = T2H_4(ibufp[i]);
> + }
> + return (sis_memory_write(mem, (char *) ibuf, length));
> +#else
> return (sis_memory_write(mem, buf, length));
> +#endif
the point of using sim-endian is that you wouldn't have any ifdefs. code the
loop and let gcc optimize away the "nothing to do" case.
-mike
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^ permalink raw reply [flat|nested] 31+ messages in thread* Re: [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order.
2015-03-22 22:46 ` Mike Frysinger
@ 2015-03-23 9:01 ` Jiri Gaisler
2015-03-28 7:41 ` Mike Frysinger
2015-03-24 9:39 ` Jiri Gaisler
2015-03-27 10:26 ` Jiri Gaisler
2 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-23 9:01 UTC (permalink / raw)
To: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 505 bytes --]
On 23/03/15 03:45, Mike Frysinger wrote:
> On 17 Mar 2015 22:02, Jiri Gaisler wrote:
>> --- a/sim/erc32/erc32.c
>> +++ b/sim/erc32/erc32.c
>> +#ifdef HOST_LITTLE_ENDIAN
>> + waddr ^= 3;
>> +#endif
>> + mem[waddr] = *data & 0x0ff;
>
> doesn't this assume the target is big endian ? this shows up a few times in
> the changes to this file.
>
The target (SPARC) is always big endian, so I believe this is correct.
I will fix the rest of your comments and resend.
Jiri.
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^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order.
2015-03-23 9:01 ` Jiri Gaisler
@ 2015-03-28 7:41 ` Mike Frysinger
2015-03-28 8:21 ` Jiri Gaisler
0 siblings, 1 reply; 31+ messages in thread
From: Mike Frysinger @ 2015-03-28 7:41 UTC (permalink / raw)
To: Jiri Gaisler; +Cc: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 1031 bytes --]
On 23 Mar 2015 10:00, Jiri Gaisler wrote:
> On 23/03/15 03:45, Mike Frysinger wrote:
> > On 17 Mar 2015 22:02, Jiri Gaisler wrote:
> >> --- a/sim/erc32/erc32.c
> >> +++ b/sim/erc32/erc32.c
> >> +#ifdef HOST_LITTLE_ENDIAN
> >> + waddr ^= 3;
> >> +#endif
> >> + mem[waddr] = *data & 0x0ff;
> >
> > doesn't this assume the target is big endian ? this shows up a few times in
> > the changes to this file.
>
> The target (SPARC) is always big endian, so I believe this is correct.
wikipedia says:
The endianness of the 32-bit SPARC V8 architecture is purely big-endian. The
64-bit SPARC V9 architecture uses big-endian instructions, but can access data
in either big-endian or little-endian byte order, chosen either at the
application instruction (load/store) level or at the memory page level (via an
MMU setting). The latter is often used for accessing data from inherently
little-endian devices, such as those on PCI buses.
but i guess that'll need quite a bit of work to fix up ?
-mike
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^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order.
2015-03-28 7:41 ` Mike Frysinger
@ 2015-03-28 8:21 ` Jiri Gaisler
0 siblings, 0 replies; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-28 8:21 UTC (permalink / raw)
To: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 1283 bytes --]
On 28/03/15 08:41, Mike Frysinger wrote:
> On 23 Mar 2015 10:00, Jiri Gaisler wrote:
>> On 23/03/15 03:45, Mike Frysinger wrote:
>>> On 17 Mar 2015 22:02, Jiri Gaisler wrote:
>>>> --- a/sim/erc32/erc32.c
>>>> +++ b/sim/erc32/erc32.c
>>>> +#ifdef HOST_LITTLE_ENDIAN
>>>> + waddr ^= 3;
>>>> +#endif
>>>> + mem[waddr] = *data & 0x0ff;
>>>
>>> doesn't this assume the target is big endian ? this shows up a few times in
>>> the changes to this file.
>>
>> The target (SPARC) is always big endian, so I believe this is correct.
>
> wikipedia says:
> The endianness of the 32-bit SPARC V8 architecture is purely big-endian. The
> 64-bit SPARC V9 architecture uses big-endian instructions, but can access data
> in either big-endian or little-endian byte order, chosen either at the
> application instruction (load/store) level or at the memory page level (via an
> MMU setting). The latter is often used for accessing data from inherently
> little-endian devices, such as those on PCI buses.
>
> but i guess that'll need quite a bit of work to fix up ?
The sis simulator is strictly SPARC V8 (32-bit), so there is nothing to fix up really.
I have no plans to add V9 (64-bit) so staying big endian should be safe.
Jiri.
> -mike
>
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^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order.
2015-03-22 22:46 ` Mike Frysinger
2015-03-23 9:01 ` Jiri Gaisler
@ 2015-03-24 9:39 ` Jiri Gaisler
2015-03-27 10:26 ` Jiri Gaisler
2 siblings, 0 replies; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-24 9:39 UTC (permalink / raw)
To: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 769 bytes --]
On 23/03/15 03:45, Mike Frysinger wrote:
> On 17 Mar 2015 22:02, Jiri Gaisler wrote:
>> --- a/sim/erc32/erc32.c
>> +++ b/sim/erc32/erc32.c
>> sregs.freq = freq ? freq : 15;
>> termsave = fcntl(0, F_GETFL, 0);
>> INIT_DISASSEMBLE_INFO(dinfo, stdout,(fprintf_ftype)fprintf);
>> +#ifdef HOST_LITTLE_ENDIAN
>> + dinfo.endian = BFD_ENDIAN_LITTLE;
>> +#else
>> dinfo.endian = BFD_ENDIAN_BIG;
>> +#endif
>
> can't you get the target endian info via the bfd library ?
bfd can tell me the byte order of the data sections in a file,
but not how the data is actually stored in the memory of the host.
Since sis always stores in host order, dinfo.endian must have
the order of the host, and not the bfd order of a file.
Jiri.
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^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order.
2015-03-22 22:46 ` Mike Frysinger
2015-03-23 9:01 ` Jiri Gaisler
2015-03-24 9:39 ` Jiri Gaisler
@ 2015-03-27 10:26 ` Jiri Gaisler
2 siblings, 0 replies; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-27 10:26 UTC (permalink / raw)
To: gdb-patches
[-- Attachment #1.1: Type: text/plain, Size: 254 bytes --]
I have reworked this patch taking your comments into account, and minimized
the amount of code change. Instead of regenerating the full patch set again,
I have attached just the current one so that we can work through one patch at
a time.
Jiri.
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1.2: 0001-sim-erc32-Switched-emulated-memory-to-host-endian-or.patch --]
[-- Type: text/x-patch; name="0001-sim-erc32-Switched-emulated-memory-to-host-endian-or.patch", Size: 20080 bytes --]
From 44a427c97d77afab3c9fc3348f7b2fd8ffcc6d5c Mon Sep 17 00:00:00 2001
From: Jiri Gaisler <jiri@gaisler.se>
Date: Sat, 30 Aug 2014 23:39:33 +0200
Subject: [PATCH] sim/erc32: Switched emulated memory to host endian order.
Change data ordering in emulated memory from target order (big endian)
to host order. Improves performance and simplifies most memory
operations. Requires some byte twisting during stores on little
endian hosts (intel). Also removed support for little-endian binaries.
* erc32.c (fetch_bytes): Remove. (store_bytes) Remove byte twisting.
(memory_read) Access memory directly. (extract_short,
extract_short_signed, extract_byte, extract_byte_signed) New
function for for sub-word LD instructions.
* func.c (disp_ctrl, dis_mem): Ajust print-out to new data endian.
* interf.c (sim_open): Set dinfo to host endian to get correct disassembly.
(sim_write, sim_read): Convert endian when gdb reads or writes memory.
---
sim/erc32/erc32.c | 173 ++++++++++-------------------------------------------
sim/erc32/exec.c | 58 +++++++++++++++---
sim/erc32/func.c | 69 +++++++++------------
sim/erc32/interf.c | 39 ++++++------
sim/erc32/sis.c | 4 ++
sim/erc32/sis.h | 2 +
6 files changed, 136 insertions(+), 209 deletions(-)
diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c
index 6b771b4..7f903b7 100644
--- a/sim/erc32/erc32.c
+++ b/sim/erc32/erc32.c
@@ -54,11 +54,6 @@ int dumbio = 0; /* normal, smart, terminal oriented IO by default */
extern int errmec;
#endif
-/* The target's byte order is big-endian by default until we load a
- little-endian program. */
-
-int current_target_byte_order = BIG_ENDIAN;
-
#define MEC_WS 0 /* Waitstates per MEC access (0 ws) */
#define MOK 0
@@ -296,11 +291,8 @@ static void gpt_reload_set (uint32 val);
static void timer_ctrl (uint32 val);
static unsigned char *
get_mem_ptr (uint32 addr, uint32 size);
-
-static void fetch_bytes (int asi, unsigned char *mem,
- uint32 *data, int sz);
-
-static void store_bytes (unsigned char *mem, uint32 *data, int sz);
+static void store_bytes (unsigned char *mem, uint32 waddr,
+ uint32 *data, int sz, int32 *ws);
extern int ext_irl;
@@ -1524,123 +1516,36 @@ timer_ctrl(val)
gpt_start();
}
-
-/* Retrieve data from target memory. MEM points to location from which
- to read the data; DATA points to words where retrieved data will be
- stored in host byte order. SZ contains log(2) of the number of bytes
- to retrieve, and can be 0 (1 byte), 1 (one half-word), 2 (one word),
- or 3 (two words). */
+/* Store data in host byte order. MEM points to the beginning of the
+ emulated memory; WADDR contains the index the emulated memory,
+ DATA points to words in host byte order to be stored. SZ contains log(2)
+ of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word),
+ 2 (one word), or 3 (two words); WS should return the number of wait-states. */
static void
-fetch_bytes (asi, mem, data, sz)
- int asi;
- unsigned char *mem;
- uint32 *data;
- int sz;
+store_bytes (unsigned char *mem, uint32 waddr, uint32 *data, int32 sz, int32 *ws)
{
- if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN
- || asi == 8 || asi == 9) {
- switch (sz) {
- case 3:
- data[1] = (((uint32) mem[7]) & 0xff) |
- ((((uint32) mem[6]) & 0xff) << 8) |
- ((((uint32) mem[5]) & 0xff) << 16) |
- ((((uint32) mem[4]) & 0xff) << 24);
- /* Fall through to 2 */
- case 2:
- data[0] = (((uint32) mem[3]) & 0xff) |
- ((((uint32) mem[2]) & 0xff) << 8) |
- ((((uint32) mem[1]) & 0xff) << 16) |
- ((((uint32) mem[0]) & 0xff) << 24);
- break;
- case 1:
- data[0] = (((uint32) mem[1]) & 0xff) |
- ((((uint32) mem[0]) & 0xff) << 8);
- break;
+ switch (sz) {
case 0:
- data[0] = mem[0] & 0xff;
- break;
-
- }
- } else {
- switch (sz) {
- case 3:
- data[1] = ((((uint32) mem[7]) & 0xff) << 24) |
- ((((uint32) mem[6]) & 0xff) << 16) |
- ((((uint32) mem[5]) & 0xff) << 8) |
- (((uint32) mem[4]) & 0xff);
- /* Fall through to 4 */
- case 2:
- data[0] = ((((uint32) mem[3]) & 0xff) << 24) |
- ((((uint32) mem[2]) & 0xff) << 16) |
- ((((uint32) mem[1]) & 0xff) << 8) |
- (((uint32) mem[0]) & 0xff);
+ waddr ^= EBT;
+ mem[waddr] = *data & 0x0ff;
+ *ws = mem_ramw_ws + 3;
break;
case 1:
- data[0] = ((((uint32) mem[1]) & 0xff) << 8) |
- (((uint32) mem[0]) & 0xff);
- break;
- case 0:
- data[0] = mem[0] & 0xff;
+#ifdef HOST_LITTLE_ENDIAN
+ waddr ^= 2;
+#endif
+ memcpy (&mem[waddr], data, 2);
+ *ws = mem_ramw_ws + 3;
break;
- }
- }
-}
-
-
-/* Store data in target byte order. MEM points to location to store data;
- DATA points to words in host byte order to be stored. SZ contains log(2)
- of the number of bytes to retrieve, and can be 0 (1 byte), 1 (one half-word),
- 2 (one word), or 3 (two words). */
-
-static void
-store_bytes (mem, data, sz)
- unsigned char *mem;
- uint32 *data;
- int sz;
-{
- if (CURRENT_TARGET_BYTE_ORDER == LITTLE_ENDIAN) {
- switch (sz) {
- case 3:
- mem[7] = (data[1] >> 24) & 0xff;
- mem[6] = (data[1] >> 16) & 0xff;
- mem[5] = (data[1] >> 8) & 0xff;
- mem[4] = data[1] & 0xff;
- /* Fall through to 2 */
case 2:
- mem[3] = (data[0] >> 24) & 0xff;
- mem[2] = (data[0] >> 16) & 0xff;
- /* Fall through to 1 */
- case 1:
- mem[1] = (data[0] >> 8) & 0xff;
- /* Fall through to 0 */
- case 0:
- mem[0] = data[0] & 0xff;
+ memcpy (&mem[waddr], data, 4);
+ *ws = mem_ramw_ws;
break;
- }
- } else {
- switch (sz) {
case 3:
- mem[7] = data[1] & 0xff;
- mem[6] = (data[1] >> 8) & 0xff;
- mem[5] = (data[1] >> 16) & 0xff;
- mem[4] = (data[1] >> 24) & 0xff;
- /* Fall through to 2 */
- case 2:
- mem[3] = data[0] & 0xff;
- mem[2] = (data[0] >> 8) & 0xff;
- mem[1] = (data[0] >> 16) & 0xff;
- mem[0] = (data[0] >> 24) & 0xff;
- break;
- case 1:
- mem[1] = data[0] & 0xff;
- mem[0] = (data[0] >> 8) & 0xff;
- break;
- case 0:
- mem[0] = data[0] & 0xff;
+ memcpy (&mem[waddr], data, 8);
+ *ws = 2 * mem_ramw_ws + STD_WS;
break;
-
- }
}
}
@@ -1670,7 +1575,7 @@ memory_read(asi, addr, data, sz, ws)
#endif
if ((addr >= mem_ramstart) && (addr < (mem_ramstart + mem_ramsz))) {
- fetch_bytes (asi, &ramb[addr & mem_rammask], data, sz);
+ memcpy (data, &ramb[addr & mem_rammask & ~3], 4);
*ws = mem_ramr_ws;
return (0);
} else if ((addr >= MEC_START) && (addr < MEC_END)) {
@@ -1688,7 +1593,7 @@ memory_read(asi, addr, data, sz, ws)
} else if (era) {
if ((addr < 0x100000) ||
((addr>= 0x80000000) && (addr < 0x80100000))) {
- fetch_bytes (asi, &romb[addr & ROM_MASK], data, sz);
+ memcpy (data, &romb[addr & ROM_MASK & ~3], 4);
*ws = 4;
return (0);
} else if ((addr >= 0x10000000) &&
@@ -1699,13 +1604,12 @@ memory_read(asi, addr, data, sz, ws)
}
} else if (addr < mem_romsz) {
- fetch_bytes (asi, &romb[addr], data, sz);
- *ws = mem_romr_ws;
- return (0);
-
+ memcpy (data, &romb[addr & ~3], 4);
+ *ws = mem_romr_ws;
+ return 0;
#else
} else if (addr < mem_romsz) {
- fetch_bytes (asi, &romb[addr], data, sz);
+ memcpy (data, &romb[addr & ~3], 4);
*ws = mem_romr_ws;
return (0);
#endif
@@ -1768,21 +1672,10 @@ memory_write(asi, addr, data, sz, ws)
}
}
- store_bytes (&ramb[addr & mem_rammask], data, sz);
-
- switch (sz) {
- case 0:
- case 1:
- *ws = mem_ramw_ws + 3;
- break;
- case 2:
- *ws = mem_ramw_ws;
- break;
- case 3:
- *ws = 2 * mem_ramw_ws + STD_WS;
- break;
- }
+ waddr = addr & mem_rammask;
+ store_bytes (ramb, waddr, data, sz, ws);
return (0);
+
} else if ((addr >= MEC_START) && (addr < MEC_END)) {
if ((sz != 2) || (asi != 0xb)) {
set_sfsr(MEC_ACC, addr, asi, 0);
@@ -1805,7 +1698,7 @@ memory_write(asi, addr, data, sz, ws)
((addr < 0x100000) || ((addr >= 0x80000000) && (addr < 0x80100000)))) {
addr &= ROM_MASK;
*ws = sz == 3 ? 8 : 4;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return (0);
} else if ((addr >= 0x10000000) &&
(addr < (0x10000000 + (512 << (mec_iocr & 0x0f)))) &&
@@ -1821,7 +1714,7 @@ memory_write(asi, addr, data, sz, ws)
*ws = mem_romw_ws + 1;
if (sz == 3)
*ws += mem_romw_ws + STD_WS;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return (0);
#else
@@ -1832,7 +1725,7 @@ memory_write(asi, addr, data, sz, ws)
*ws = mem_romw_ws + 1;
if (sz == 3)
*ws += mem_romw_ws + STD_WS;
- store_bytes (&romb[addr], data, sz);
+ store_bytes (romb, addr, data, sz, ws);
return (0);
#endif
diff --git a/sim/erc32/exec.c b/sim/erc32/exec.c
index 275218a..db47f65 100644
--- a/sim/erc32/exec.c
+++ b/sim/erc32/exec.c
@@ -370,6 +370,36 @@ div64 (uint32 n1_hi, uint32 n1_low, uint32 n2, uint32 *result, int msigned)
}
+static int
+extract_short (uint32 data, uint32 address)
+{
+ return ((data >> ((2 - (address & 2)) * 8)) & 0xffff);
+}
+
+static int
+extract_short_signed (uint32 data, uint32 address)
+{
+ uint32 tmp = ((data >> ((2 - (address & 2)) * 8)) & 0xffff);
+ if (tmp & 0x8000)
+ tmp |= 0xffff0000;
+ return tmp;
+}
+
+static int
+extract_byte (uint32 data, uint32 address)
+{
+ return ((data >> ((3 - (address & 3)) * 8)) & 0xff);
+}
+
+static int
+extract_byte_signed (uint32 data, uint32 address)
+{
+ uint32 tmp = ((data >> ((3 - (address & 3)) * 8)) & 0xff);
+ if (tmp & 0x80)
+ tmp |= 0xffffff00;
+ return tmp;
+}
+
int
dispatch_instruction(sregs)
struct pstate *sregs;
@@ -1077,7 +1107,8 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_PRIVI;
break;
}
- sregs->psr = (rs1 ^ operand2) & 0x00f03fff;
+ sregs->psr = (sregs->psr & 0xff000000) |
+ (rs1 ^ operand2) & 0x00f03fff;
break;
case WRWIM:
if (!(sregs->psr & PSR_S)) {
@@ -1213,8 +1244,10 @@ dispatch_instruction(sregs)
else
rdd = &(sregs->g[rd]);
}
- mexc = memory_read(asi, address, ddata, 3, &ws);
- sregs->hold += ws * 2;
+ mexc = memory_read (asi, address, ddata, 2, &ws);
+ sregs->hold += ws;
+ mexc |= memory_read (asi, address+4, &ddata[1], 2, &ws);
+ sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
sregs->trap = TRAP_DEXC;
@@ -1252,6 +1285,7 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
+ data = extract_byte (data, address);
*rdd = data;
data = 0x0ff;
mexc = memory_write(asi, address, &data, 0, &ws);
@@ -1274,8 +1308,10 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
- if ((op3 == LDSB) && (data & 0x80))
- data |= 0xffffff00;
+ if (op3 == LDSB)
+ data = extract_byte_signed (data, address);
+ else
+ data = extract_byte (data, address);
*rdd = data;
break;
case LDSHA:
@@ -1293,8 +1329,10 @@ dispatch_instruction(sregs)
sregs->trap = TRAP_DEXC;
break;
}
- if ((op3 == LDSH) && (data & 0x8000))
- data |= 0xffff0000;
+ if (op3 == LDSH)
+ data = extract_short_signed (data, address);
+ else
+ data = extract_short (data, address);
*rdd = data;
break;
case LDF:
@@ -1337,8 +1375,10 @@ dispatch_instruction(sregs)
((sregs->frs2 >> 1) == (rd >> 1)))
sregs->fhold += (sregs->ftime - ebase.simtime);
}
- mexc = memory_read(asi, address, ddata, 3, &ws);
- sregs->hold += ws * 2;
+ mexc = memory_read (asi, address, ddata, 2, &ws);
+ sregs->hold += ws;
+ mexc |= memory_read (asi, address+4, &ddata[1], 2, &ws);
+ sregs->hold += ws;
sregs->icnt = T_LDD;
if (mexc) {
sregs->trap = TRAP_DEXC;
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 265d42f..fba6bf1 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -30,10 +30,8 @@
#include "sim-config.h"
#include <inttypes.h>
-
#define VAL(x) strtoul(x,(char **)NULL,0)
-extern int current_target_byte_order;
struct disassemble_info dinfo;
struct pstate sregs;
extern struct estate ebase;
@@ -184,18 +182,10 @@ get_regi(struct pstate * sregs, int32 reg, char *buf)
default:break;
}
}
- if (current_target_byte_order == BIG_ENDIAN) {
- buf[0] = (rval >> 24) & 0x0ff;
- buf[1] = (rval >> 16) & 0x0ff;
- buf[2] = (rval >> 8) & 0x0ff;
- buf[3] = rval & 0x0ff;
- }
- else {
- buf[3] = (rval >> 24) & 0x0ff;
- buf[2] = (rval >> 16) & 0x0ff;
- buf[1] = (rval >> 8) & 0x0ff;
- buf[0] = rval & 0x0ff;
- }
+ buf[0] = (rval >> 24) & 0x0ff;
+ buf[1] = (rval >> 16) & 0x0ff;
+ buf[2] = (rval >> 8) & 0x0ff;
+ buf[3] = rval & 0x0ff;
}
@@ -786,15 +776,15 @@ disp_ctrl(sregs)
struct pstate *sregs;
{
- unsigned char i[4];
+ uint32 i;
printf("\n psr: %08X wim: %08X tbr: %08X y: %08X\n",
sregs->psr, sregs->wim, sregs->tbr, sregs->y);
- sis_memory_read(sregs->pc, i, 4);
- printf("\n pc: %08X = %02X%02X%02X%02X ", sregs->pc,i[0],i[1],i[2],i[3]);
+ sis_memory_read (sregs->pc, (char *) &i, 4);
+ printf ("\n pc: %08X = %08X ", sregs->pc, i);
print_insn_sparc_sis(sregs->pc, &dinfo);
- sis_memory_read(sregs->npc, i, 4);
- printf("\n npc: %08X = %02X%02X%02X%02X ",sregs->npc,i[0],i[1],i[2],i[3]);
+ sis_memory_read (sregs->npc, (char *) &i, 4);
+ printf ("\n npc: %08X = %08X ", sregs->npc, i);
print_insn_sparc_sis(sregs->npc, &dinfo);
if (sregs->err_mode)
printf("\n IU in error mode");
@@ -808,22 +798,25 @@ disp_mem(addr, len)
{
uint32 i;
- unsigned char data[4];
+ union {
+ unsigned char u8[4];
+ uint32 u32;
+ } data;
uint32 mem[4], j;
char *p;
for (i = addr & ~3; i < ((addr + len) & ~3); i += 16) {
printf("\n %8X ", i);
for (j = 0; j < 4; j++) {
- sis_memory_read((i + (j * 4)), data, 4);
- printf("%02x%02x%02x%02x ", data[0],data[1],data[2],data[3]);
- mem[j] = *((int *) &data);
+ sis_memory_read ((i + (j * 4)), data.u8, 4);
+ printf ("%08x ", data.u32);
+ mem[j] = data.u32;
}
printf(" ");
p = (char *) mem;
for (j = 0; j < 16; j++) {
- if (isprint(p[j]))
- putchar(p[j]);
+ if (isprint (p[j ^ EBT]))
+ putchar (p[j ^ EBT]);
else
putchar('.');
}
@@ -838,11 +831,14 @@ dis_mem(addr, len, info)
struct disassemble_info *info;
{
uint32 i;
- unsigned char data[4];
+ union {
+ unsigned char u8[4];
+ uint32 u32;
+ } data;
for (i = addr & -3; i < ((addr & -3) + (len << 2)); i += 4) {
- sis_memory_read(i, data, 4);
- printf(" %08x %02x%02x%02x%02x ", i, data[0],data[1],data[2],data[3]);
+ sis_memory_read (i, data.u8, 4);
+ printf (" %08x %08x ", i, data.u32);
print_insn_sparc_sis(i, info);
if (i >= 0xfffffffc) break;
printf("\n");
@@ -1041,6 +1037,7 @@ bfd_load(fname)
asection *section;
bfd *pbfd;
const bfd_arch_info_type *arch;
+ int i;
pbfd = bfd_openr(fname, 0);
@@ -1054,14 +1051,6 @@ bfd_load(fname)
}
arch = bfd_get_arch_info (pbfd);
- if (bfd_little_endian (pbfd) || arch->mach == bfd_mach_sparc_sparclite_le)
- current_target_byte_order = LITTLE_ENDIAN;
- else
- current_target_byte_order = BIG_ENDIAN;
- if (sis_verbose)
- printf("file %s is %s-endian.\n", fname,
- current_target_byte_order == BIG_ENDIAN ? "big" : "little");
-
if (sis_verbose)
printf("loading %s:", fname);
for (section = pbfd->sections; section; section = section->next) {
@@ -1093,10 +1082,7 @@ bfd_load(fname)
sizeof (marker));
if (strncmp (marker.signature, "DaTa", 4) == 0)
{
- if (current_target_byte_order == BIG_ENDIAN)
- section_address = bfd_getb32 (marker.sdata);
- else
- section_address = bfd_getl32 (marker.sdata);
+ section_address = bfd_getb32 (marker.sdata);
}
}
}
@@ -1121,7 +1107,8 @@ bfd_load(fname)
bfd_get_section_contents(pbfd, section, buffer, fptr, count);
- sis_memory_write(section_address, buffer, count);
+ for (i = 0; i < count; i++)
+ sis_memory_write((section_address + i) ^ EBT, &buffer[i], 1);
section_address += count;
fptr += count;
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 7d64ed6..e5d0153 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -40,7 +40,6 @@ extern struct disassemble_info dinfo;
extern struct pstate sregs;
extern struct estate ebase;
-extern int current_target_byte_order;
extern int ctrl_c;
extern int nfp;
extern int ift;
@@ -253,7 +252,11 @@ sim_open (kind, callback, abfd, argv)
sregs.freq = freq ? freq : 15;
termsave = fcntl(0, F_GETFL, 0);
INIT_DISASSEMBLE_INFO(dinfo, stdout,(fprintf_ftype)fprintf);
+#ifdef HOST_LITTLE_ENDIAN
+ dinfo.endian = BFD_ENDIAN_LITTLE;
+#else
dinfo.endian = BFD_ENDIAN_BIG;
+#endif
reset_all();
ebase.simtime = 0;
init_sim();
@@ -312,14 +315,10 @@ sim_store_register(sd, regno, value, length)
unsigned char *value;
int length;
{
- /* FIXME: Review the computation of regval. */
int regval;
- if (current_target_byte_order == BIG_ENDIAN)
- regval = (value[0] << 24) | (value[1] << 16)
+
+ regval = (value[0] << 24) | (value[1] << 16)
| (value[2] << 8) | value[3];
- else
- regval = (value[3] << 24) | (value[2] << 16)
- | (value[1] << 8) | value[0];
set_regi(&sregs, regno, regval);
return length;
}
@@ -337,23 +336,25 @@ sim_fetch_register(sd, regno, buf, length)
}
int
-sim_write(sd, mem, buf, length)
- SIM_DESC sd;
- SIM_ADDR mem;
- const unsigned char *buf;
- int length;
+sim_write(SIM_DESC sd, SIM_ADDR mem, const unsigned char *buf, int length)
{
- return (sis_memory_write(mem, buf, length));
+ int i, len;
+
+ for (i = 0; i < length; i++) {
+ sis_memory_write ((mem + i) ^ EBT, &buf[i], 1);
+ }
+ return length;
}
int
-sim_read(sd, mem, buf, length)
- SIM_DESC sd;
- SIM_ADDR mem;
- unsigned char *buf;
- int length;
+sim_read(SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
{
- return (sis_memory_read(mem, buf, length));
+ int i, len;
+
+ for (i = 0; i < length; i++) {
+ sis_memory_read ((mem + i) ^ EBT, &buf[i], 1);
+ }
+ return length;
}
void
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index 931e3f3..dcb5ebf 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -227,7 +227,11 @@ main(argc, argv)
sregs.freq = freq;
INIT_DISASSEMBLE_INFO(dinfo, stdout, (fprintf_ftype) fprintf);
+#ifdef HOST_LITTLE_ENDIAN
+ dinfo.endian = BFD_ENDIAN_LITTLE;
+#else
dinfo.endian = BFD_ENDIAN_BIG;
+#endif
termsave = fcntl(0, F_GETFL, 0);
using_history();
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index 74466ae..2493cc9 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -28,8 +28,10 @@
#if WITH_HOST_BYTE_ORDER == BIG_ENDIAN
#define HOST_BIG_ENDIAN
+#define EBT 0
#else
#define HOST_LITTLE_ENDIAN
+#define EBT 3
#endif
#define I_ACC_EXC 1
--
1.9.1
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 884 bytes --]
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v4 13/13] Add watchpoint support to gdb simulator interface.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (10 preceding siblings ...)
2015-03-17 21:03 ` [PATCH v4 03/13] sim/erc32: Switched emulated memory to host endian order Jiri Gaisler
@ 2015-03-17 21:04 ` Jiri Gaisler
2015-03-28 7:19 ` Mike Frysinger
2015-03-17 21:04 ` [PATCH v4 08/13] sim/erc32: Move local extern declarations into sis.h Jiri Gaisler
12 siblings, 1 reply; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:04 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
Currently, only the sparc sim supports watchpoints. Stubs for the
watchpoint functions were added to all other built-in sims
to avoid linking errors.
---
gdb/remote-sim.c | 69 ++++++++++++
include/gdb/remote-sim.h | 24 ++++
sim/arm/wrapper.c | 25 +++++
sim/avr/interp.c | 25 +++++
sim/bfin/Makefile.in | 1 +
sim/common/sim-watch-remote.c | 48 ++++++++
sim/cr16/interp.c | 25 +++++
sim/cris/Makefile.in | 1 +
sim/erc32/interf.c | 247 ++++++++++++++++++++++++++++++++----------
sim/frv/Makefile.in | 1 +
sim/h8300/Makefile.in | 1 +
sim/iq2000/Makefile.in | 1 +
sim/lm32/Makefile.in | 1 +
sim/m32c/gdb-if.c | 25 +++++
sim/m32r/Makefile.in | 1 +
sim/m68hc11/Makefile.in | 1 +
sim/mcore/interp.c | 25 +++++
sim/microblaze/Makefile.in | 2 +-
sim/mips/Makefile.in | 1 +
sim/mn10300/Makefile.in | 1 +
sim/moxie/interp.c | 25 +++++
sim/msp430/Makefile.in | 1 +
sim/ppc/gdb-sim.c | 25 +++++
sim/rl78/gdb-if.c | 25 +++++
sim/rx/gdb-if.c | 25 +++++
sim/sh/interp.c | 25 +++++
sim/sh64/Makefile.in | 1 +
sim/v850/Makefile.in | 3 +-
28 files changed, 596 insertions(+), 59 deletions(-)
create mode 100644 sim/common/sim-watch-remote.c
diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index fd2fd58..af17e85 100644
--- a/gdb/remote-sim.c
+++ b/gdb/remote-sim.c
@@ -1294,6 +1294,70 @@ gdbsim_has_memory (struct target_ops *ops)
return 1;
}
+static int
+gdbsim_insert_watchpoint (struct target_ops *self,
+ CORE_ADDR addr, int len, int type,
+ struct expression *cond)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_insert_watchpoint: %d\n", type);
+
+ if (sim_set_watchpoint (sim_data->gdbsim_desc, addr, len, type) != SIM_RC_OK)
+ return -1;
+
+ return 0;
+}
+
+static int
+gdbsim_remove_watchpoint (struct target_ops *self,
+ CORE_ADDR addr, int len, int type,
+ struct expression *cond)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+
+ if (remote_debug)
+ fprintf_unfiltered (gdb_stdlog, "gdbsim_remove_watchpoint: %d\n", type);
+
+ if (sim_clear_watchpoint (sim_data->gdbsim_desc, addr, len, type) != SIM_RC_OK)
+ return -1;
+
+ return 0;
+}
+
+
+static int
+gdbsim_can_use_hw_breakpoint (struct target_ops *self,
+ int type, int cnt, int othertype)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+
+ return (sim_can_use_hw_breakpoint(sim_data->gdbsim_desc, type, cnt, othertype));
+}
+
+static int
+gdbsim_stopped_by_watchpoint (struct target_ops *ops)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+
+ return (sim_stopped_by_watchpoint(sim_data->gdbsim_desc));;
+}
+
+static int
+gdbsim_stopped_data_address (struct target_ops *ops, CORE_ADDR *addr)
+{
+ struct sim_inferior_data *sim_data
+ = get_sim_inferior_data (current_inferior (), SIM_INSTANCE_NEEDED);
+
+ *addr = sim_watchpoint_address(sim_data->gdbsim_desc);;
+ return (1);
+}
+
/* Define the target subroutine names. */
struct target_ops gdbsim_ops;
@@ -1316,6 +1380,11 @@ init_gdbsim_ops (void)
gdbsim_ops.to_files_info = gdbsim_files_info;
gdbsim_ops.to_insert_breakpoint = memory_insert_breakpoint;
gdbsim_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ gdbsim_ops.to_insert_watchpoint = gdbsim_insert_watchpoint;
+ gdbsim_ops.to_remove_watchpoint = gdbsim_remove_watchpoint;
+ gdbsim_ops.to_stopped_by_watchpoint = gdbsim_stopped_by_watchpoint;
+ gdbsim_ops.to_can_use_hw_breakpoint = gdbsim_can_use_hw_breakpoint;
+ gdbsim_ops.to_stopped_data_address = gdbsim_stopped_data_address;
gdbsim_ops.to_kill = gdbsim_kill;
gdbsim_ops.to_load = gdbsim_load;
gdbsim_ops.to_create_inferior = gdbsim_create_inferior;
diff --git a/include/gdb/remote-sim.h b/include/gdb/remote-sim.h
index bd8ddc0..04cc46c 100644
--- a/include/gdb/remote-sim.h
+++ b/include/gdb/remote-sim.h
@@ -281,6 +281,30 @@ void sim_do_command (SIM_DESC sd, const char *cmd);
char **sim_complete_command (SIM_DESC sd, const char *text, const char *word);
+/* Add hardware watchpoint. See to_insert_watchpoint() in target.h
+ for description of parameters. */
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type);
+
+/* Remove hardware watchpoint. See to_remove_watchpoint() in target.h
+ for description of parameters. */
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type);
+
+/* Returns data address when watchpoint has been hit. See
+ to_stopped_data_address() in target.h for description. */
+
+int sim_watchpoint_address (SIM_DESC sd);
+
+/* Returns 1 if simulator was stopped by watchpoint hit. */
+
+int sim_stopped_by_watchpoint(SIM_DESC sd);
+
+/* Returns non-zero if we can set a hardware watchpoint of type TYPE.
+ See to_can_use_hw_breakpoint() in target.h for details. */
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype);
+
#ifdef __cplusplus
}
#endif
diff --git a/sim/arm/wrapper.c b/sim/arm/wrapper.c
index 0ccc7fb..a6871ad 100644
--- a/sim/arm/wrapper.c
+++ b/sim/arm/wrapper.c
@@ -1016,3 +1016,28 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
{
return NULL;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/avr/interp.c b/sim/avr/interp.c
index 0df5155..ce21cb2 100644
--- a/sim/avr/interp.c
+++ b/sim/avr/interp.c
@@ -1853,3 +1853,28 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
{
return NULL;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/bfin/Makefile.in b/sim/bfin/Makefile.in
index 1bf0772..019593c 100644
--- a/sim/bfin/Makefile.in
+++ b/sim/bfin/Makefile.in
@@ -36,6 +36,7 @@ SIM_OBJS = \
sim-reg.o \
sim-resume.o \
sim-stop.o \
+ sim-watch-remote.o \
@BFIN_SIM_EXTRA_OBJS@ \
$(SIM_EXTRA_OBJS)
diff --git a/sim/common/sim-watch-remote.c b/sim/common/sim-watch-remote.c
new file mode 100644
index 0000000..b504f80
--- /dev/null
+++ b/sim/common/sim-watch-remote.c
@@ -0,0 +1,48 @@
+/* The common simulator framework for GDB, the GNU Debugger.
+
+ Copyright 2002-2015 Free Software Foundation, Inc.
+
+ Contributed by Jiri Gaisler.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+
+#include "gdb/remote-sim.h"
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/cr16/interp.c b/sim/cr16/interp.c
index 9c85948..1c79258 100644
--- a/sim/cr16/interp.c
+++ b/sim/cr16/interp.c
@@ -1584,3 +1584,28 @@ sim_load (SIM_DESC sd, const char *prog, struct bfd *abfd, int from_tty)
prog_bfd_was_opened_p = abfd == NULL;
return SIM_RC_OK;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/cris/Makefile.in b/sim/cris/Makefile.in
index 1281ac3..63443c8 100644
--- a/sim/cris/Makefile.in
+++ b/sim/cris/Makefile.in
@@ -30,6 +30,7 @@ SIM_OBJS = \
sim-hrw.o \
sim-model.o \
sim-reg.o \
+ sim-watch-remote.o \
cgen-utils.o cgen-trace.o cgen-scache.o \
cgen-run.o sim-reason.o sim-engine.o sim-stop.o \
sim-if.o arch.o \
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index f04041c..3ff8493 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -48,41 +48,19 @@ run_sim(sregs, icount, dis)
if (sis_verbose)
(*sim_callback->printf_filtered) (sim_callback, "resuming at %x\n",
sregs->pc);
- ms->init_stdio();
- sregs->starttime = get_time();
- irq = 0;
- if ((sregs->pc != 0) && (ebase.simtime == 0))
+ ms->init_stdio();
+ sregs->starttime = get_time();
+ irq = 0;
+ if (sregs->err_mode)
+ icount = 0;
+ if ((sregs->pc != 0) && (ebase.simtime == 0))
ms->boot_init();
- while (!sregs->err_mode & (icount > 0)) {
-
+ while (icount > 0) {
sregs->fhold = 0;
- sregs->hold = 0;
sregs->icnt = 1;
-
- if (sregs->psr & 0x080)
- sregs->asi = 8;
- else
- sregs->asi = 9;
-
-#if 0 /* DELETE ME! for debugging purposes only */
- if (sis_verbose > 1)
- if (sregs->pc == 0 || sregs->npc == 0)
- printf ("bogus pc or npc\n");
-#endif
mexc = ms->memory_iread (sregs->pc, &sregs->inst, &sregs->hold);
-#if 0 /* DELETE ME! for debugging purposes only */
- if (sis_verbose > 2)
- printf("pc %x, np %x, sp %x, fp %x, wm %x, cw %x, i %08x\n",
- sregs->pc, sregs->npc,
- sregs->r[(((sregs->psr & 7) << 4) + 14) & 0x7f],
- sregs->r[(((sregs->psr & 7) << 4) + 30) & 0x7f],
- sregs->wim,
- sregs->psr & 7,
- sregs->inst);
-#endif
if (sregs->annul) {
sregs->annul = 0;
- sregs->icnt = 1;
sregs->pc = sregs->npc;
sregs->npc = sregs->npc + 4;
} else {
@@ -91,48 +69,41 @@ run_sim(sregs, icount, dis)
if (mexc) {
sregs->trap = I_ACC_EXC;
} else {
- if ((sis_gdb_break) && (sregs->inst == 0x91d02001)) {
- if (sis_verbose)
- (*sim_callback->printf_filtered) (sim_callback,
- "SW BP hit at %x\n", sregs->pc);
- ms->sim_halt();
- ms->restore_stdio();
- clearerr(stdin);
- return (BPT_HIT);
- } else
- dispatch_instruction(sregs);
+ dispatch_instruction(sregs);
+ icount--;
}
- icount--;
}
if (sregs->trap) {
irq = 0;
- sregs->err_mode = execute_trap(sregs);
+ if ((sregs->err_mode = execute_trap(sregs)) == WPT_HIT) {
+ sregs->err_mode = 0;
+ sregs->trap = 0;
+ icount = 0;
+ }
+ if (sregs->err_mode) icount = 0;
+
}
}
advance_time(sregs);
- if (ctrl_c) {
+ if (ctrl_c)
icount = 0;
- }
}
ms->sim_halt();
sregs->tottime += get_time() - sregs->starttime;
ms->restore_stdio();
clearerr(stdin);
- if (sregs->err_mode)
+ if (sregs->err_mode) {
ms->error_mode(sregs->pc);
- if (sregs->err_mode)
- return (ERROR);
- if (sregs->bphit) {
- if (sis_verbose)
- (*sim_callback->printf_filtered) (sim_callback,
- "HW BP hit at %x\n", sregs->pc);
- return (BPT_HIT);
+ return ERROR;
}
if (ctrl_c) {
ctrl_c = 0;
- return (CTRL_C);
+ sregs->wphit = sregs->bphit = 0;
+ return CTRL_C;
}
- return (TIME_OUT);
+ if ((sregs->bphit) || (sregs->wphit))
+ return BPT_HIT;
+ return TIME_OUT;
}
void
@@ -414,12 +385,15 @@ sim_stop_reason(sd, reason, sigrc)
{
switch (simstat) {
- case CTRL_C:
+ case CTRL_C:
*reason = sim_stopped;
*sigrc = GDB_SIGNAL_INT;
break;
case OK:
case TIME_OUT:
+ *reason = sim_stopped;
+ *sigrc = 0;
+ break;
case BPT_HIT:
*reason = sim_stopped;
*sigrc = GDB_SIGNAL_TRAP;
@@ -428,8 +402,10 @@ sim_stop_reason(sd, reason, sigrc)
*sigrc = 0;
*reason = sim_exited;
}
- ctrl_c = 0;
- simstat = OK;
+
+ if (sis_verbose)
+ (*sim_callback->printf_filtered) (sim_callback,
+ "sim_stop_reason %x : %x\n", *reason, *sigrc);
}
/* Flush all register windows out to the stack. Starting after the invalid
@@ -490,7 +466,25 @@ flush_windows ()
void
sim_resume(SIM_DESC sd, int step, int siggnal)
{
- simstat = run_sim(&sregs, UINT64_MAX, 0);
+ if (sis_verbose)
+ (*sim_callback->printf_filtered) (sim_callback,
+ "sim_resume %x : %x : %x : %x : 0x%08x\n", step, siggnal, sregs.bphit, sregs.wphit, sregs.pc);
+ if (step) {
+ sregs.bphit = 0;
+ sregs.wphit = 1;
+ simstat = run_sim(&sregs, 1, 0);
+ sregs.bphit = 0;
+ sregs.wphit = 0;
+ } else if (sregs.bphit || sregs.wphit) {
+ sregs.bphit = 0;
+ sregs.wphit = 1;
+ simstat = run_sim(&sregs, 1, 0);
+ sregs.bphit = sregs.wphit = 0;
+ simstat = run_sim(&sregs, UINT64_MAX, 0);
+ sregs.bphit = 0;
+ }
+ else
+ simstat = run_sim(&sregs, UINT64_MAX, 0);
if (sis_gdb_break) flush_windows ();
}
@@ -525,6 +519,145 @@ sim_stop (SIM_DESC sd)
return 1;
}
+static int
+sis_insert_watchpoint_read(int addr, unsigned char mask)
+{
+ if (sregs.wprnum < WPR_MAX) {
+ sregs.wprs[sregs.wprnum] = addr;
+ sregs.wprm[sregs.wprnum] = mask;
+ sregs.wprnum++;
+ if (sis_verbose)
+ (*sim_callback->printf_filtered) (sim_callback, "inserted read watchpoint at %x\n", addr);
+ return SIM_RC_OK;
+ } else
+ return SIM_RC_FAIL;
+}
+
+static int
+sis_remove_watchpoint_read(int addr)
+{
+ int i = 0;
+
+ while ((i < sregs.wprnum) && (sregs.wprs[i] != addr))
+ i++;
+ if (addr == sregs.wprs[i]) {
+ for (; i < sregs.wprnum - 1; i++)
+ sregs.wprs[i] = sregs.wprs[i + 1];
+ sregs.wprnum -= 1;
+ if (sis_verbose)
+ (*sim_callback->printf_filtered) (sim_callback, "removed read watchpoint at %x\n", addr);
+ return 0;
+ }
+ return 1;
+}
+
+static int
+sis_insert_watchpoint_write(int32 addr, unsigned char mask)
+{
+ if (sregs.wpwnum < WPR_MAX) {
+ sregs.wpws[sregs.wpwnum] = addr;
+ sregs.wpwm[sregs.wpwnum] = mask;
+ sregs.wpwnum++;
+ if (sis_verbose)
+ (*sim_callback->printf_filtered) (sim_callback, "sim_insert_watchpoint_write: 0x%08x : %x\n", addr, mask);
+ return SIM_RC_OK;
+ } else
+ return SIM_RC_FAIL;
+}
+
+static int
+sis_remove_watchpoint_write(int addr)
+{
+ int i = 0;
+
+ while ((i < sregs.wpwnum) && (sregs.wpws[i] != addr))
+ i++;
+ if (addr == sregs.wpws[i]) {
+ for (; i < sregs.wpwnum - 1; i++)
+ sregs.wpws[i] = sregs.wpws[i + 1];
+ sregs.wpwnum -= 1;
+ if (sis_verbose)
+ (*sim_callback->printf_filtered) (sim_callback, "removed write watchpoint at %x\n", addr);
+ return SIM_RC_OK;
+ }
+ return SIM_RC_FAIL;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ if (type == 2) /* bp_hardware_breakpoint not supported */
+ return 0;
+ else
+ return 1;
+}
+
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ int res;
+ unsigned char mask;
+
+ switch (length) {
+ case 1: mask = 0; break;
+ case 2: mask = 1; break;
+ case 4: mask = 3; break;
+ default: mask = 7; break;
+ }
+
+ switch (type) {
+ case 0:
+ res = sis_insert_watchpoint_write (mem, mask);
+ break;
+ case 1:
+ res = sis_insert_watchpoint_read (mem, mask);
+ break;
+ case 2:
+ if ((res = sis_insert_watchpoint_write (mem, mask)) == SIM_RC_OK)
+ res = sis_insert_watchpoint_read (mem, mask);
+ if (res == SIM_RC_FAIL)
+ sis_remove_watchpoint_read (mem);
+ break;
+ default:
+ res = -1;
+ }
+ return (res);
+}
+
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ int res;
+ switch (type) {
+ case 0:
+ res = sis_remove_watchpoint_write (mem);
+ break;
+ case 1:
+ res = sis_remove_watchpoint_read (mem);
+ break;
+ case 2:
+ if ((res = sis_remove_watchpoint_write (mem)) == SIM_RC_OK)
+ res = sis_remove_watchpoint_read (mem);
+ else
+ sis_remove_watchpoint_read (mem);
+ break;
+ default:
+ res = -1;
+ }
+ return (res);
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ if (sis_verbose)
+ (*sim_callback->printf_filtered) (sim_callback, "sim_stopped_by_watchpoint %x\n", sregs.wphit);
+ return((sregs.wphit != 0));
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return(sregs.wpaddress);
+}
+
#if 0 /* FIXME: These shouldn't exist. */
int
diff --git a/sim/frv/Makefile.in b/sim/frv/Makefile.in
index 2c1503b..671afe5 100644
--- a/sim/frv/Makefile.in
+++ b/sim/frv/Makefile.in
@@ -26,6 +26,7 @@ SIM_OBJS = \
sim-hrw.o \
sim-model.o \
sim-reg.o \
+ sim-watch-remote.o \
cgen-utils.o cgen-trace.o cgen-scache.o cgen-fpu.o cgen-accfp.o \
cgen-run.o sim-reason.o sim-engine.o sim-stop.o \
sim-if.o arch.o \
diff --git a/sim/h8300/Makefile.in b/sim/h8300/Makefile.in
index 0333a56..4203138 100644
--- a/sim/h8300/Makefile.in
+++ b/sim/h8300/Makefile.in
@@ -22,6 +22,7 @@ SIM_OBJS = compile.o \
sim-cpu.o \
sim-engine.o \
sim-load.o \
+ sim-watch-remote.o \
$(SIM_EXTRA_OBJS)
## COMMON_POST_CONFIG_FRAG
diff --git a/sim/iq2000/Makefile.in b/sim/iq2000/Makefile.in
index 57ce255..e88db42 100644
--- a/sim/iq2000/Makefile.in
+++ b/sim/iq2000/Makefile.in
@@ -32,6 +32,7 @@ SIM_OBJS = \
cgen-utils.o cgen-trace.o cgen-scache.o \
cgen-run.o sim-reason.o sim-engine.o sim-stop.o \
sim-if.o arch.o \
+ sim-watch-remote.o \
$(IQ2000_OBJS) \
$(CONFIG_DEVICES)
diff --git a/sim/lm32/Makefile.in b/sim/lm32/Makefile.in
index 61e4137..85b8231 100644
--- a/sim/lm32/Makefile.in
+++ b/sim/lm32/Makefile.in
@@ -16,6 +16,7 @@ SIM_OBJS = \
cgen-utils.o cgen-trace.o cgen-scache.o \
cgen-run.o sim-reason.o sim-engine.o sim-stop.o \
sim-if.o arch.o \
+ sim-watch-remote.o \
cpu.o decode.o sem.o model.o mloop.o \
lm32.o traps.o user.o
diff --git a/sim/m32c/gdb-if.c b/sim/m32c/gdb-if.c
index 62ec28c..b8560d5 100644
--- a/sim/m32c/gdb-if.c
+++ b/sim/m32c/gdb-if.c
@@ -710,3 +710,28 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
{
return NULL;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/m32r/Makefile.in b/sim/m32r/Makefile.in
index 491affd..b12560f 100644
--- a/sim/m32r/Makefile.in
+++ b/sim/m32r/Makefile.in
@@ -34,6 +34,7 @@ SIM_OBJS = \
cgen-utils.o cgen-trace.o cgen-scache.o \
cgen-run.o sim-reason.o sim-engine.o sim-stop.o \
sim-if.o arch.o \
+ sim-watch-remote.o \
$(M32R_OBJS) \
$(M32RX_OBJS) \
$(M32R2_OBJS) \
diff --git a/sim/m68hc11/Makefile.in b/sim/m68hc11/Makefile.in
index f08aa53..43faad8 100644
--- a/sim/m68hc11/Makefile.in
+++ b/sim/m68hc11/Makefile.in
@@ -28,6 +28,7 @@ SIM_OBJS = $(M68HC11_OBJS) \
sim-stop.o \
sim-hrw.o \
sim-reason.o \
+ sim-watch-remote.o \
$(SIM_EXTRA_OBJS)
SIM_PROFILE= -DPROFILE=1 -DWITH_PROFILE=-1
diff --git a/sim/mcore/interp.c b/sim/mcore/interp.c
index 4eb1a59..f049f4d 100644
--- a/sim/mcore/interp.c
+++ b/sim/mcore/interp.c
@@ -2127,3 +2127,28 @@ sim_set_callbacks (host_callback *ptr)
{
callback = ptr;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/microblaze/Makefile.in b/sim/microblaze/Makefile.in
index 6dc6e4e..8ad7356 100644
--- a/sim/microblaze/Makefile.in
+++ b/sim/microblaze/Makefile.in
@@ -21,7 +21,7 @@
SIM_RUN_OBJS = run.o
SIM_EXTRA_CFLAGS = -DSIM_USE_DEPRECATED_RUN_FRONTEND
-SIM_OBJS = interp.o sim-load.o
+SIM_OBJS = interp.o sim-load.o sim-watch-remote.o
SIM_EXTRA_LIBS = -lm
## COMMON_POST_CONFIG_FRAG
diff --git a/sim/mips/Makefile.in b/sim/mips/Makefile.in
index 67bce7f..7b2de5e 100644
--- a/sim/mips/Makefile.in
+++ b/sim/mips/Makefile.in
@@ -54,6 +54,7 @@ SIM_OBJS = \
sim-stop.o \
sim-resume.o \
sim-reason.o \
+ sim-watch-remote.o
# List of flags to always pass to $(CC).
diff --git a/sim/mn10300/Makefile.in b/sim/mn10300/Makefile.in
index 55b0a3f..41bf132 100644
--- a/sim/mn10300/Makefile.in
+++ b/sim/mn10300/Makefile.in
@@ -27,6 +27,7 @@ MN10300_OBJS = \
sim-resume.o \
sim-reason.o \
sim-stop.o \
+ sim-watch-remote.o \
dv-sockser.o
SIM_OBJS = $(MN10300_OBJS) interp.o
diff --git a/sim/moxie/interp.c b/sim/moxie/interp.c
index 1126552..82042d2 100644
--- a/sim/moxie/interp.c
+++ b/sim/moxie/interp.c
@@ -1467,3 +1467,28 @@ sim_set_callbacks (ptr)
{
callback = ptr;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/msp430/Makefile.in b/sim/msp430/Makefile.in
index 2034867..a02eecd 100644
--- a/sim/msp430/Makefile.in
+++ b/sim/msp430/Makefile.in
@@ -36,6 +36,7 @@ SIM_OBJS = \
sim-reg.o \
sim-resume.o \
sim-stop.o \
+ sim-watch-remote.o \
$(SIM_EXTRA_OBJS)
# List of extra dependencies.
diff --git a/sim/ppc/gdb-sim.c b/sim/ppc/gdb-sim.c
index 0269458..3ce3016 100644
--- a/sim/ppc/gdb-sim.c
+++ b/sim/ppc/gdb-sim.c
@@ -1296,3 +1296,28 @@ sim_store_register (SIM_DESC sd, int regno, unsigned char *buf, int length)
return psim_write_register(simulator, MAX_NR_PROCESSORS,
buf, regname, raw_transfer);
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/rl78/gdb-if.c b/sim/rl78/gdb-if.c
index 6317a73..262e3e1 100644
--- a/sim/rl78/gdb-if.c
+++ b/sim/rl78/gdb-if.c
@@ -571,3 +571,28 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
{
return NULL;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/rx/gdb-if.c b/sim/rx/gdb-if.c
index 762c3d2..8140a8b 100644
--- a/sim/rx/gdb-if.c
+++ b/sim/rx/gdb-if.c
@@ -853,3 +853,28 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
{
return NULL;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/sh/interp.c b/sim/sh/interp.c
index c854174..24f03ed 100644
--- a/sim/sh/interp.c
+++ b/sim/sh/interp.c
@@ -2780,3 +2780,28 @@ sim_complete_command (SIM_DESC sd, const char *text, const char *word)
{
return NULL;
}
+
+int sim_set_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_clear_watchpoint (SIM_DESC sd, SIM_ADDR mem, int length, int type)
+{
+ return -1;
+}
+
+int sim_stopped_by_watchpoint (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_watchpoint_address (SIM_DESC sd)
+{
+ return 0;
+}
+
+int sim_can_use_hw_breakpoint (SIM_DESC sd, int type, int cnt, int othertype)
+{
+ return 0;
+}
diff --git a/sim/sh64/Makefile.in b/sim/sh64/Makefile.in
index 6c23ad9..85d343b 100644
--- a/sim/sh64/Makefile.in
+++ b/sim/sh64/Makefile.in
@@ -34,6 +34,7 @@ SIM_OBJS = \
cgen-utils.o cgen-trace.o cgen-scache.o \
cgen-run.o sim-reason.o sim-engine.o sim-stop.o \
sim-if.o arch.o \
+ sim-watch-remote.o \
$(SH64_OBJS) \
$(CONFIG_DEVICES)
diff --git a/sim/v850/Makefile.in b/sim/v850/Makefile.in
index c8ccde0..424f16a 100644
--- a/sim/v850/Makefile.in
+++ b/sim/v850/Makefile.in
@@ -28,7 +28,8 @@ SIM_OBJS = \
sim-hrw.o \
sim-resume.o \
sim-reason.o \
- sim-stop.o
+ sim-stop.o \
+ sim-watch-remote.o
# List of extra dependencies.
# Generally this consists of simulator specific files included by sim-main.h.
--
1.9.1
^ permalink raw reply [flat|nested] 31+ messages in thread* Re: [PATCH v4 13/13] Add watchpoint support to gdb simulator interface.
2015-03-17 21:04 ` [PATCH v4 13/13] Add watchpoint support to gdb simulator interface Jiri Gaisler
@ 2015-03-28 7:19 ` Mike Frysinger
2015-03-30 20:51 ` Jiri Gaisler
0 siblings, 1 reply; 31+ messages in thread
From: Mike Frysinger @ 2015-03-28 7:19 UTC (permalink / raw)
To: Jiri Gaisler; +Cc: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 362 bytes --]
On 17 Mar 2015 22:02, Jiri Gaisler wrote:
> Currently, only the sparc sim supports watchpoints. Stubs for the
> watchpoint functions were added to all other built-in sims
> to avoid linking errors.
i haven't looked too closely here, but we already have common/sim-watch.c. how
does this interact with that ?
also missing ChangeLog entries
-mike
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [PATCH v4 13/13] Add watchpoint support to gdb simulator interface.
2015-03-28 7:19 ` Mike Frysinger
@ 2015-03-30 20:51 ` Jiri Gaisler
0 siblings, 0 replies; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-30 20:51 UTC (permalink / raw)
To: gdb-patches
[-- Attachment #1: Type: text/plain, Size: 1680 bytes --]
On 28/03/15 08:19, Mike Frysinger wrote:
> On 17 Mar 2015 22:02, Jiri Gaisler wrote:
>> Currently, only the sparc sim supports watchpoints. Stubs for the
>> watchpoint functions were added to all other built-in sims
>> to avoid linking errors.
>
> i haven't looked too closely here, but we already have common/sim-watch.c. how
> does this interact with that ?
This is interesting. The sim-watch.c seems only to define PC watchpoints,
i.e. what I would call (hardware) breakpoints. There does not seem to be any
support for data watchpoints like we have in sis. As far as I can see,
only the ARM simulator also implements data watchpoints but does not
export it to gdb. This is probably because the target_ops structure for gdbsim
does not export the (data) watchpoint functionality.
My patch extends the target_ops structure to include the gdb watchpoint
interface, and provide dummy functions for all simulators to avoid linking
errors. It does not modify or interfere with the sim-watch.c since the
functions are different. Ideally, common/sim-watch.c could be updated
to also support data watchpoints but it is beyond my capability at this
point. The code does not seem to have been touched since 1998 btw.
I propose to add my code as it currently stands in common/sim-watch-remote.c,
but rename it to sim-watch-data.c. By adding the watchpoint interface to
the target_ops, any maintainer could then map potential watchpoint support
in a simulator on the gdb interface. If the sim/common framework is extended
to support this, then more simulators will obviously benefit.
>
> also missing ChangeLog entries
Will fix.
Jiri.
[-- Attachment #2: OpenPGP digital signature --]
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^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v4 08/13] sim/erc32: Move local extern declarations into sis.h.
2015-03-17 21:03 [PATCH v4 00/13] Update of the SPARC SIS simulator Jiri Gaisler
` (11 preceding siblings ...)
2015-03-17 21:04 ` [PATCH v4 13/13] Add watchpoint support to gdb simulator interface Jiri Gaisler
@ 2015-03-17 21:04 ` Jiri Gaisler
12 siblings, 0 replies; 31+ messages in thread
From: Jiri Gaisler @ 2015-03-17 21:04 UTC (permalink / raw)
To: gdb-patches; +Cc: Jiri Gaisler
* erc32.c : Move extern declarations to sis.h
* exec.c, func.c, interf.c, sis.c : As above.
---
sim/erc32/erc32.c | 10 ----------
sim/erc32/exec.c | 7 -------
sim/erc32/func.c | 12 ++++--------
sim/erc32/interf.c | 19 -------------------
sim/erc32/sis.c | 20 --------------------
sim/erc32/sis.h | 18 ++++++++++++++++++
6 files changed, 22 insertions(+), 64 deletions(-)
diff --git a/sim/erc32/erc32.c b/sim/erc32/erc32.c
index f3cce80..12e20a6 100644
--- a/sim/erc32/erc32.c
+++ b/sim/erc32/erc32.c
@@ -33,12 +33,6 @@
#include "sis.h"
#include "sim-config.h"
-extern int ctrl_c;
-extern int32 sis_verbose;
-extern int32 sparclite, sparclite_board;
-extern int rom8,wrp,uben;
-extern char uart_dev1[], uart_dev2[];
-
static int tty_setup = 1; /* default setup if not a tty */
/* MEC registers */
@@ -295,8 +289,6 @@ static unsigned char *
static void store_bytes (unsigned char *mem, uint32 waddr,
uint32 *data, int sz, int32 *ws);
-extern int ext_irl;
-
static host_callback *callback;
@@ -1883,8 +1875,6 @@ sis_memory_read(addr, data, length)
return (length);
}
-extern struct pstate sregs;
-
void
boot_init (void)
{
diff --git a/sim/erc32/exec.c b/sim/erc32/exec.c
index 71ae677..2ee1118 100644
--- a/sim/erc32/exec.c
+++ b/sim/erc32/exec.c
@@ -24,7 +24,6 @@
#include <math.h>
#include <stdio.h>
-extern int32 sis_verbose, sparclite;
int ext_irl = 0;
/* Load/store interlock delay */
@@ -228,10 +227,6 @@ static int fpexec (uint32 op3, uint32 rd, uint32 rs1, uint32 rs2,
struct pstate *sregs);
static int chk_asi (struct pstate *sregs, uint32 *asi, uint32 op3);
-
-extern struct estate ebase;
-extern int32 nfp,ift;
-
#ifdef ERRINJ
extern uint32 errtt, errftt;
#endif
@@ -2017,8 +2012,6 @@ execute_trap(sregs)
}
-extern struct irqcell irqarr[16];
-
int
check_interrupts(sregs)
struct pstate *sregs;
diff --git a/sim/erc32/func.c b/sim/erc32/func.c
index 210842b..94493b8 100644
--- a/sim/erc32/func.c
+++ b/sim/erc32/func.c
@@ -41,7 +41,10 @@ int dumbio = 0; /* normal, smart, terminal oriented IO by default */
struct disassemble_info dinfo;
struct pstate sregs;
-extern struct estate ebase;
+struct estate ebase;
+struct evcell evbuf[EVENT_MAX];
+struct irqcell irqarr[16];
+
int ctrl_c = 0;
int sis_verbose = 0;
char *sis_version = "2.7.5";
@@ -55,7 +58,6 @@ int sparclite = 0; /* emulating SPARClite instructions? */
int sparclite_board = 0; /* emulating SPARClite board RAM? */
char uart_dev1[128] = "";
char uart_dev2[128] = "";
-extern int ext_irl;
uint32 last_load_addr = 0;
int nouartrx = 0;
host_callback *sim_callback;
@@ -729,12 +731,6 @@ init_signals()
}
-extern struct disassemble_info dinfo;
-
-struct estate ebase;
-struct evcell evbuf[EVENT_MAX];
-struct irqcell irqarr[16];
-
static int
disp_fpu(sregs)
struct pstate *sregs;
diff --git a/sim/erc32/interf.c b/sim/erc32/interf.c
index 394b724..3d827ff 100644
--- a/sim/erc32/interf.c
+++ b/sim/erc32/interf.c
@@ -37,25 +37,6 @@
#define PSR_CWP 0x7
-extern struct disassemble_info dinfo;
-extern struct estate ebase;
-
-extern int nfp;
-extern int ift;
-extern int rom8;
-extern int wrp;
-extern int uben;
-extern char *sis_version;
-extern struct estate ebase;
-extern struct evcell evbuf[];
-extern struct irqcell irqarr[];
-extern int irqpend, ext_irl;
-extern int sparclite;
-extern int dumbio;
-extern int sparclite_board;
-extern int termsave;
-extern char uart_dev1[], uart_dev2[];
-
int sis_gdb_break = 1;
int
diff --git a/sim/erc32/sis.c b/sim/erc32/sis.c
index 79757ae..d833da3 100644
--- a/sim/erc32/sis.c
+++ b/sim/erc32/sis.c
@@ -42,26 +42,6 @@
/* Command history buffer length - MUST be binary */
#define HIST_LEN 64
-extern struct disassemble_info dinfo;
-extern struct estate ebase;
-
-extern int nfp;
-extern int ift;
-extern int wrp;
-extern int rom8;
-extern int uben;
-extern char *sis_version;
-extern struct estate ebase;
-extern struct evcell evbuf[];
-extern struct irqcell irqarr[];
-extern int irqpend, ext_irl;
-extern int termsave;
-extern int sparclite;
-extern int dumbio;
-extern char uart_dev1[];
-extern char uart_dev2[];
-extern uint32 last_load_addr;
-
#ifdef ERA
extern int era;
#endif
diff --git a/sim/erc32/sis.h b/sim/erc32/sis.h
index 36067ad..9ec128e 100644
--- a/sim/erc32/sis.h
+++ b/sim/erc32/sis.h
@@ -166,8 +166,25 @@ extern const struct memsys erc32sys;
/* func.c */
extern struct pstate sregs;
+extern struct estate ebase;
+extern struct evcell evbuf[];
+extern struct irqcell irqarr[];
+extern int nfp;
+extern int ift;
extern int ctrl_c;
extern int sis_verbose;
+extern char *sis_version;
+extern int sparclite;
+extern int sparclite_board;
+extern uint32 last_load_addr;
+extern int wrp;
+extern int rom8;
+extern int uben;
+extern int irqpend;
+extern int ext_irl;
+extern int termsave;
+extern char uart_dev1[];
+extern char uart_dev2[];
extern void set_regi (struct pstate *sregs, int32 reg,
uint32 rval);
extern void get_regi (struct pstate *sregs, int32 reg, char *buf);
@@ -178,6 +195,7 @@ extern void init_bpt (struct pstate *sregs);
extern void init_signals (void);
struct disassemble_info;
+extern struct disassemble_info dinfo;
extern void dis_mem (uint32 addr, uint32 len,
struct disassemble_info *info);
extern void event (void (*cfunc) (), int32 arg, uint64 delta);
--
1.9.1
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