From: Aditya Kamath1 <Aditya.Kamath1@ibm.com>
To: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>,
"gdb-patches@sourceware.org" <gdb-patches@sourceware.org>,
"simon.marchi@efficios.com" <simon.marchi@efficios.com>
Cc: Sangamesh Mallayya <sangamesh.swamy@in.ibm.com>,
Sanket Rathi <sanrathi@in.ibm.com>
Subject: Re: [PATCH] Fix call functions command bug in 64-bit programs for AIX
Date: Mon, 14 Nov 2022 18:52:41 +0000 [thread overview]
Message-ID: <BY5PR15MB35402C24EC55CAE8F9BDA79FD6059@BY5PR15MB3540.namprd15.prod.outlook.com> (raw)
In-Reply-To: <f730baa8a381c573653fd7309a2e91b77dbe23a0.camel@de.ibm.com>
[-- Attachment #1: Type: text/plain, Size: 10532 bytes --]
Hi Ulrich,
Sure. This is done..
The code is
if (register_size (gdbarch, regno) == 8)
memcpy (&buf, addr, 8);
else
buf = *addr;
printf ("val in regno = %d via buf is %lld and *addr is %d, regsize =
%d\n", regno, buf, *addr, register_size (gdbarch, regno));
rs6000_ptrace64 (PT_WRITE_GPR, pid, nr, 0, &buf);
}
in store_register (struct regcache *regcache, int regno)...
The output is as shown below:-
Reading symbols from /home/XYZ/gdb_tests...
(gdb) b main
Breakpoint 1 at 0x100007dc: file /home/XYZ/gdb_tests.c, line 22.
(gdb) r
Starting program: /home/XYZ/gdb_tests
BFD: /usr/lib/libc.a(/usr/lib/libc.a(shr_64.o)): wrong auxtype 0xff for storage class 0x2
BFD: /usr/lib/libc.a(/usr/lib/libc.a(shr_64.o)): wrong auxtype 0xff for storage class 0x6b
Breakpoint 1, main (argc=1, argv=0xffffffffffffad0)
at /home/aditya/gdb_tests.c:22
warning: Source file is more recent than executable.
22 printf("Hi Bangalore %x\n",num2print(27, 16, 13, 9.9));
(gdb) call num2print
$1 = {int (long, float, int, int)} 0x1000006a0 <num2print>
(gdb) call num2print (2, 3, 4, 6)
val in regno = 3 via buf is 2 and *addr is 0, regsize = 8
val in regno = 4 via buf is 4629700416936869888 and *addr is 1077936128, regsize = 8
val in regno = 5 via buf is 17179869184 and *addr is 4, regsize = 8
val in regno = 6 via buf is 25769803776 and *addr is 6, regsize = 8....
R2
R3.000000
R0
R0.000000
$2 = 2
I have cut short those print statements.. Full output is below
Have a nice day ahead..
Thanks,
Aditya..
--------------------
22 printf("Hi Bangalore %x\n",num2print(27, 16, 13, 9.9));
(gdb) call num2print
$1 = {int (long, float, int, int)} 0x1000006a0 <num2print>
(gdb) call num2print (2, 3, 4, 6)
val in regno = 3 via buf is 2 and *addr is 0, regsize = 8
val in regno = 4 via buf is 4629700416936869888 and *addr is 1077936128, regsize = 8
val in regno = 5 via buf is 17179869184 and *addr is 4, regsize = 8
val in regno = 6 via buf is 25769803776 and *addr is 6, regsize = 8
val in regno = 1 via buf is 1152921504606845280 and *addr is 268435455, regsize = 8
val in regno = 67 via buf is 4294968448 and *addr is 1, regsize = 8
val in regno = 0 via buf is 4294968564 and *addr is 1, regsize = 8
val in regno = 1 via buf is 1152921504606845280 and *addr is 268435455, regsize = 8
val in regno = 2 via buf is 4563403472 and *addr is 1, regsize = 8
val in regno = 3 via buf is 2 and *addr is 0, regsize = 8
val in regno = 4 via buf is 4629700416936869888 and *addr is 1077936128, regsize = 8
val in regno = 5 via buf is 17179869184 and *addr is 4, regsize = 8
val in regno = 6 via buf is 25769803776 and *addr is 6, regsize = 8
val in regno = 7 via buf is 1152921504606846944 and *addr is 268435455, regsize = 8
val in regno = 8 via buf is 0 and *addr is 0, regsize = 8
val in regno = 9 via buf is 1 and *addr is 0, regsize = 8
val in regno = 10 via buf is 0 and *addr is 0, regsize = 8
val in regno = 11 via buf is 4144 and *addr is 0, regsize = 8
val in regno = 12 via buf is -1080857313497259912 and *addr is -251656704, regsize = 8
val in regno = 13 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 14 via buf is 1 and *addr is 0, regsize = 8
val in regno = 15 via buf is 1152921504606845648 and *addr is 268435455, regsize = 8
val in regno = 16 via buf is 1152921504606845664 and *addr is 268435455, regsize = 8
val in regno = 17 via buf is 576495942044221440 and *addr is 134225921, regsize = 8
val in regno = 18 via buf is 1152921504606846672 and *addr is 268435455, regsize = 8
val in regno = 19 via buf is 720575940110904384 and *addr is 167772159, regsize = 8
val in regno = 20 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 21 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 22 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 23 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 24 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 25 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 26 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 27 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 28 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 29 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 30 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 31 via buf is 1152921504606845408 and *addr is 268435455, regsize = 8
val in regno = 64 via buf is 4294969308 and *addr is 1, regsize = 8
val in regno = 65 via buf is -6917529027640897486 and *addr is -1610612736, regsize = 8
val in regno = 66 via buf is 1109656104 and *addr is 1109656104, regsize = 4
val in regno = 67 via buf is 4294968448 and *addr is 1, regsize = 8
val in regno = 68 via buf is 0 and *addr is 0, regsize = 8
val in regno = 69 via buf is 0 and *addr is 0, regsize = 4
val in regno = 70 via buf is 0 and *addr is 0, regsize = 4
val in regno = 64 via buf is 4294968992 and *addr is 1, regsize = 8
R2
R3.000000
R0
R0.000000
val in regno = 0 via buf is 4294968564 and *addr is 1, regsize = 8
val in regno = 1 via buf is 1152921504606845408 and *addr is 268435455, regsize = 8
val in regno = 2 via buf is 4563403472 and *addr is 1, regsize = 8
val in regno = 3 via buf is 1 and *addr is 0, regsize = 8
val in regno = 4 via buf is 1152921504606845648 and *addr is 268435455, regsize = 8
val in regno = 5 via buf is 1152921504606845664 and *addr is 268435455, regsize = 8
val in regno = 6 via buf is -9223372036854722510 and *addr is -2147483648, regsize = 8
val in regno = 7 via buf is 1152921504606846944 and *addr is 268435455, regsize = 8
val in regno = 8 via buf is 0 and *addr is 0, regsize = 8
val in regno = 9 via buf is 1 and *addr is 0, regsize = 8
val in regno = 10 via buf is 0 and *addr is 0, regsize = 8
val in regno = 11 via buf is 4144 and *addr is 0, regsize = 8
val in regno = 12 via buf is -1080857313497259912 and *addr is -251656704, regsize = 8
val in regno = 13 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 14 via buf is 1 and *addr is 0, regsize = 8
val in regno = 15 via buf is 1152921504606845648 and *addr is 268435455, regsize = 8
val in regno = 16 via buf is 1152921504606845664 and *addr is 268435455, regsize = 8
val in regno = 17 via buf is 576495942044221440 and *addr is 134225921, regsize = 8
val in regno = 18 via buf is 1152921504606846672 and *addr is 268435455, regsize = 8
val in regno = 19 via buf is 720575940110904384 and *addr is 167772159, regsize = 8
val in regno = 20 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 21 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 22 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 23 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 24 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 25 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 26 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 27 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 28 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 29 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 30 via buf is -4982089500409860083 and *addr is -1159983106, regsize = 8
val in regno = 31 via buf is 1152921504606845408 and *addr is 268435455, regsize = 8
val in regno = 64 via buf is 4294969308 and *addr is 1, regsize = 8
val in regno = 65 via buf is -6917529027640897486 and *addr is -1610612736, regsize = 8
val in regno = 66 via buf is 1109656104 and *addr is 1109656104, regsize = 4
val in regno = 67 via buf is 4294968564 and *addr is 1, regsize = 8
val in regno = 68 via buf is 0 and *addr is 0, regsize = 8
val in regno = 69 via buf is 0 and *addr is 0, regsize = 4
val in regno = 70 via buf is 0 and *addr is 0, regsize = 4
$2 = 2
(gdb)
val = 0 in regno 51
val = 0 in regno 52
val = 0 in regno 52
val = 0 in regno 53
val = 0 in regno 53
val = 0 in regno 54
val = 0 in regno 54
val = 0 in regno 55
val = 0 in regno 55
val = 0 in regno 56
val = 0 in regno 56
val = 0 in regno 57
val = 0 in regno 57
val = 0 in regno 58
val = 0 in regno 58
val = 0 in regno 59
val = 0 in regno 59
val = 0 in regno 60
val = 0 in regno 60
val = 0 in regno 61
val = 0 in regno 61
val = 0 in regno 62
val = 0 in regno 62
(gdb)
(gdb)
________________________________
From: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Sent: 15 November 2022 00:13
To: gdb-patches@sourceware.org <gdb-patches@sourceware.org>; Aditya Kamath1 <Aditya.Kamath1@ibm.com>; simon.marchi@efficios.com <simon.marchi@efficios.com>
Cc: Sangamesh Mallayya <sangamesh.swamy@in.ibm.com>; Sanket Rathi <sanrathi@in.ibm.com>
Subject: Re: [PATCH] Fix call functions command bug in 64-bit programs for AIX
Aditya Kamath1 <Aditya.Kamath1@ibm.com> wrote:
> {
> /* PT_WRITE_GPR requires the buffer parameter to point to an 8-byte
> area, even if the register is really only 32 bits. */
> long long buf;
> if (register_size (gdbarch, regno) == 8)
> memcpy (&buf, addr, 8);
> else
> buf = *addr;
> printf ("val in regno = %d via buf is %d and *addr is %d\n", regno, bu
f, *addr);
This doesn't work - buf is a "long long", so you need to use "%lld" to print
it, not just "%d". That's why the output for "buf" was wrong.
Also, please print the result of "register_size (gdbarch, regno)" as well,
so we know for sure which part of the if condition is actually taken.
Bye,
Ulrich
next prev parent reply other threads:[~2022-11-14 18:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-07 11:00 Aditya Kamath1
2022-11-08 13:30 ` Ulrich Weigand
2022-11-11 17:53 ` Aditya Kamath1
2022-11-14 15:54 ` Ulrich Weigand
2022-11-14 17:32 ` Aditya Kamath1
2022-11-14 18:19 ` Ulrich Weigand
2022-11-14 18:28 ` Aditya Kamath1
2022-11-14 18:43 ` Ulrich Weigand
2022-11-14 18:52 ` Aditya Kamath1 [this message]
2022-11-14 19:10 ` Ulrich Weigand
2022-11-16 11:27 ` Aditya Kamath1
2022-11-16 15:15 ` Ulrich Weigand
2022-11-16 18:07 ` Aditya Kamath1
2022-11-16 18:30 ` Tom Tromey
2022-11-17 12:54 ` Ulrich Weigand
2022-11-24 17:56 ` Aditya Kamath1
2022-11-24 18:15 ` Tom Tromey
2023-04-14 7:38 ` [PATCH] Fix call functions command bug in 64-bit programs for AIX and PC read in psymtab-symtab warning Aditya Kamath1
2023-04-14 14:45 ` Tom Tromey
2023-04-17 13:08 ` Aditya Kamath1
2023-04-17 13:16 ` Aditya Kamath1
2023-04-18 10:12 ` Ulrich Weigand
2023-04-21 13:00 ` Aditya Kamath1
2023-04-24 15:44 ` Ulrich Weigand
2023-04-27 10:13 ` Aditya Kamath1
2023-04-27 12:23 ` Ulrich Weigand
2023-04-27 10:14 ` Aditya Kamath1
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