* Straying #endif in ppc_closure.S
@ 2013-11-17 3:17 Alan Modra
2013-11-18 11:38 ` Anthony Green
0 siblings, 1 reply; 6+ messages in thread
From: Alan Modra @ 2013-11-17 3:17 UTC (permalink / raw)
To: libffi-discuss
An #endif in the wrong place would cause compile failure on powerpcle.
Using bl instead of b doesn't cause runtime failures as you might think,
but does mess the processor branch prediction.
* src/powerpc/ppc_closure.S: Move errant #endif to where it belongs.
Don't bl .Luint128.
diff --git a/src/powerpc/ppc_closure.S b/src/powerpc/ppc_closure.S
index 3eefe7e..1f72340 100644
--- a/src/powerpc/ppc_closure.S
+++ b/src/powerpc/ppc_closure.S
@@ -238,7 +238,7 @@ ENTRY(ffi_closure_SYSV)
lwz %r3,112+0(%r1)
lwz %r4,112+4(%r1)
lwz %r5,112+8(%r1)
- bl .Luint128
+ b .Luint128
# The return types below are only used when the ABI type is FFI_SYSV.
# case FFI_SYSV_TYPE_SMALL_STRUCT + 1. One byte struct.
@@ -320,13 +320,13 @@ ENTRY(ffi_closure_SYSV)
mtlr %r0
addi %r1,%r1,144
blr
+#endif
.Luint128:
lwz %r6,112+12(%r1)
mtlr %r0
addi %r1,%r1,144
blr
-#endif
END(ffi_closure_SYSV)
--
Alan Modra
Australia Development Lab, IBM
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Straying #endif in ppc_closure.S
2013-11-17 3:17 Straying #endif in ppc_closure.S Alan Modra
@ 2013-11-18 11:38 ` Anthony Green
2013-11-19 0:14 ` Alan Modra
0 siblings, 1 reply; 6+ messages in thread
From: Anthony Green @ 2013-11-18 11:38 UTC (permalink / raw)
To: Alan Modra; +Cc: libffi-discuss
Alan Modra <amodra@gmail.com> writes:
> An #endif in the wrong place would cause compile failure on powerpcle.
> Using bl instead of b doesn't cause runtime failures as you might think,
> but does mess the processor branch prediction.
Thanks Alan. I've committed this along with all of your other recent
changes. I'm also about to update the README to mention ELFv2 support.
AG
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Straying #endif in ppc_closure.S
2013-11-18 11:38 ` Anthony Green
@ 2013-11-19 0:14 ` Alan Modra
2013-11-20 7:35 ` PowerPC64 ELFv2 fix 2 of 2 Alan Modra
2013-11-20 7:38 ` Tidy powerpc*-linux support Alan Modra
0 siblings, 2 replies; 6+ messages in thread
From: Alan Modra @ 2013-11-19 0:14 UTC (permalink / raw)
To: Anthony Green; +Cc: libffi-discuss
On Mon, Nov 18, 2013 at 06:38:15AM -0500, Anthony Green wrote:
> Alan Modra <amodra@gmail.com> writes:
>
> > An #endif in the wrong place would cause compile failure on powerpcle.
> > Using bl instead of b doesn't cause runtime failures as you might think,
> > but does mess the processor branch prediction.
>
> Thanks Alan. I've committed this along with all of your other recent
> changes. I'm also about to update the README to mention ELFv2 support.
Thanks! Someday I should pull powerpc/ffi.c apart into two files, one
for 32-bit and the other for 64-bit because you can't call 32-bit
functions from 64-bit code or vice versa. Having both lots of code
compiled in is just bloat, and there is really very little shared
code. Also, for the sin of adding #ifdef __STRUCT_PARM_ALIGN__ I
should go through all of the #if's in ffi.c and replace many with
tests on cif->abi, and define quite a few more abi values. Even
"#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE" in ffi.c is wrong, or at
least incomplete in that libffi doesn't handle calls from
-mlong-double-64 code when libffi is compiled with -mlong-double-128.
--
Alan Modra
Australia Development Lab, IBM
^ permalink raw reply [flat|nested] 6+ messages in thread
* PowerPC64 ELFv2 fix 2 of 2
2013-11-19 0:14 ` Alan Modra
@ 2013-11-20 7:35 ` Alan Modra
2013-11-20 7:38 ` Tidy powerpc*-linux support Alan Modra
1 sibling, 0 replies; 6+ messages in thread
From: Alan Modra @ 2013-11-20 7:35 UTC (permalink / raw)
To: libffi-discuss
Using NUM_FPR_ARG_REGISTERS rather than NUM_FPR_ARG_REGISTERS64 meant
that a parameter save area could be allocated before it was strictly
necessary. Wrong but harmless. Found when splitting apart ffi.c
into 32-bit and 64-bit support.
* src/powerpc/ffi.c (ffi_prep_cif_machdep_core): Use
NUM_FPR_ARG_REGISTERS64 and NUM_GPR_ARG_REGISTERS64 not their
32-bit versions for 64-bit code.
diff --git a/src/powerpc/ffi.c b/src/powerpc/ffi.c
index feb2144..6896065 100644
--- a/src/powerpc/ffi.c
+++ b/src/powerpc/ffi.c
@@ -978,7 +978,7 @@ ffi_prep_cif_machdep_core (ffi_cif *cif)
case FFI_TYPE_LONGDOUBLE:
fparg_count += 2;
intarg_count += 2;
- if (fparg_count > NUM_FPR_ARG_REGISTERS)
+ if (fparg_count > NUM_FPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
break;
#endif
@@ -986,7 +986,7 @@ ffi_prep_cif_machdep_core (ffi_cif *cif)
case FFI_TYPE_DOUBLE:
fparg_count++;
intarg_count++;
- if (fparg_count > NUM_FPR_ARG_REGISTERS)
+ if (fparg_count > NUM_FPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
break;
@@ -1007,12 +1007,12 @@ ffi_prep_cif_machdep_core (ffi_cif *cif)
if (elt)
{
fparg_count += elnum;
- if (fparg_count > NUM_FPR_ARG_REGISTERS)
+ if (fparg_count > NUM_FPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
}
else
{
- if (intarg_count > NUM_GPR_ARG_REGISTERS)
+ if (intarg_count > NUM_GPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
}
break;
@@ -1030,7 +1030,7 @@ ffi_prep_cif_machdep_core (ffi_cif *cif)
/* Everything else is passed as a 8-byte word in a GPR, either
the object itself or a pointer to it. */
intarg_count++;
- if (intarg_count > NUM_GPR_ARG_REGISTERS)
+ if (intarg_count > NUM_GPR_ARG_REGISTERS64)
flags |= FLAG_ARG_NEEDS_PSAVE;
break;
default:
--
Alan Modra
Australia Development Lab, IBM
^ permalink raw reply [flat|nested] 6+ messages in thread
* Tidy powerpc*-linux support
2013-11-19 0:14 ` Alan Modra
2013-11-20 7:35 ` PowerPC64 ELFv2 fix 2 of 2 Alan Modra
@ 2013-11-20 7:38 ` Alan Modra
2014-05-30 5:10 ` Ryan Hill
1 sibling, 1 reply; 6+ messages in thread
From: Alan Modra @ 2013-11-20 7:38 UTC (permalink / raw)
To: libffi-discuss
As threatened.
This separates the 32-bit sysv/linux/bsd code from the 64-bit linux
code, and makes it possible to link code compiled with different
options to those used to compile libffi. For example, a
-mlong-double-128 libffi can be used with -mlong-double-64 code.
Tested powerpc-linux, powerpc64-linux, powerpc64le-linux, and the
hacky powerpc-freebsd simulated setup I used earlier. I've tried a
few combinations of ABI variations; -mlong-double-64/-mlong-double-128
and -msvr4-struct-return/-maix-struct-return pass the testuite with
flying colours. Testing -msoft-float ran into lack of soft-float
multilibs on my system, but I looked at some testcases under gdb and
they seemed to do the right thing.
* Makefile.am (EXTRA_DIST): Add new src/powerpc files.
(nodist_libffi_la_SOURCES <POWERPC, POWERPC_FREEBSD>): Likewise.
* configure.ac (HAVE_LONG_DOUBLE_VARIANT): Define for powerpc.
* include/ffi.h.in (ffi_prep_types): Declare.
* src/prep_cif.c (ffi_prep_cif_core): Call ffi_prep_types.
* src/types.c (FFI_NONCONST_TYPEDEF): Define and use for
HAVE_LONG_DOUBLE_VARIANT.
* src/powerpc/ffi_powerpc.h: New file.
* src/powerpc/ffi.c: Split into..
* src/powerpc/ffi_sysv.c: ..new file, and..
* src/powerpc/ffi_linux64.c: ..new file, rewriting parts.
* src/powerpc/ffitarget.h (enum ffi_abi): Rewrite powerpc ABI
selection as bits controlling features.
* src/powerpc/linux64.S: For consistency, use POWERPC64 rather
than __powerpc64__.
* src/powerpc/linux64_closure.S: Likewise.
* src/powerpc/ppc_closure.S: Likewise. Move .note.FNU-stack
inside guard.
* src/powerpc/sysv.S: Likewise.
* configure: Regenerate.
* fficonfig.h.in: Regenerate.
* Makefile.in: Regenerate.
diff --git a/Makefile.am b/Makefile.am
index e9ba8cb..4b5d1c7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -24,7 +24,8 @@ EXTRA_DIST = LICENSE ChangeLog.v1 ChangeLog.libgcj configure.host \
src/microblaze/ffi.c src/microblaze/sysv.S \
src/microblaze/ffitarget.h \
src/nios2/ffi.c src/nios2/ffitarget.h src/nios2/sysv.S \
- src/powerpc/ffi.c \
+ src/powerpc/ffi.c src/powerpc/ffi_powerpc.h \
+ src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c \
src/powerpc/sysv.S src/powerpc/linux64.S \
src/powerpc/linux64_closure.S src/powerpc/ppc_closure.S \
src/powerpc/asm.h src/powerpc/aix.S src/powerpc/darwin.S \
@@ -167,7 +168,7 @@ if NIOS2
nodist_libffi_la_SOURCES += src/nios2/sysv.S src/nios2/ffi.c
endif
if POWERPC
-nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/sysv.S src/powerpc/ppc_closure.S src/powerpc/linux64.S src/powerpc/linux64_closure.S
+nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/ffi_linux64.c src/powerpc/sysv.S src/powerpc/ppc_closure.S src/powerpc/linux64.S src/powerpc/linux64_closure.S
endif
if POWERPC_AIX
nodist_libffi_la_SOURCES += src/powerpc/ffi_darwin.c src/powerpc/aix.S src/powerpc/aix_closure.S
@@ -176,7 +177,7 @@ if POWERPC_DARWIN
nodist_libffi_la_SOURCES += src/powerpc/ffi_darwin.c src/powerpc/darwin.S src/powerpc/darwin_closure.S
endif
if POWERPC_FREEBSD
-nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/sysv.S src/powerpc/ppc_closure.S
+nodist_libffi_la_SOURCES += src/powerpc/ffi.c src/powerpc/ffi_sysv.c src/powerpc/sysv.S src/powerpc/ppc_closure.S
endif
if AARCH64
nodist_libffi_la_SOURCES += src/aarch64/sysv.S src/aarch64/ffi.c
diff --git a/configure.ac b/configure.ac
index 8246ee9..0d768c6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,6 +66,7 @@ dnl The -no-testsuite modules omit the test subdir.
AM_CONDITIONAL(TESTSUBDIR, test -d $srcdir/testsuite)
TARGETDIR="unknown"
+HAVE_LONG_DOUBLE_VARIANT=0
case "$host" in
aarch64*-*-*)
TARGET=AARCH64; TARGETDIR=aarch64
@@ -226,6 +227,7 @@ case "$host" in
powerpc*-*-linux* | powerpc-*-sysv*)
TARGET=POWERPC; TARGETDIR=powerpc
+ HAVE_LONG_DOUBLE_VARIANT=1
;;
powerpc-*-amigaos*)
TARGET=POWERPC; TARGETDIR=powerpc
@@ -241,6 +243,7 @@ case "$host" in
;;
powerpc-*-freebsd* | powerpc-*-openbsd*)
TARGET=POWERPC_FREEBSD; TARGETDIR=powerpc
+ HAVE_LONG_DOUBLE_VARIANT=1
;;
powerpc64-*-freebsd*)
TARGET=POWERPC; TARGETDIR=powerpc
@@ -333,14 +336,20 @@ AC_CHECK_SIZEOF(long double)
# Also AC_SUBST this variable for ffi.h.
if test -z "$HAVE_LONG_DOUBLE"; then
HAVE_LONG_DOUBLE=0
- if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
- if test $ac_cv_sizeof_long_double != 0; then
+ if test $ac_cv_sizeof_long_double != 0; then
+ if test $HAVE_LONG_DOUBLE_VARIANT != 0; then
+ AC_DEFINE(HAVE_LONG_DOUBLE_VARIANT, 1, [Define if you support more than one size of the long double type])
HAVE_LONG_DOUBLE=1
- AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
+ else
+ if test $ac_cv_sizeof_double != $ac_cv_sizeof_long_double; then
+ HAVE_LONG_DOUBLE=1
+ AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if you have the long double type and it is bigger than a double])
+ fi
fi
fi
fi
AC_SUBST(HAVE_LONG_DOUBLE)
+AC_SUBST(HAVE_LONG_DOUBLE_VARIANT)
AC_C_BIGENDIAN
diff --git a/include/ffi.h.in b/include/ffi.h.in
index a51583b..93c776f 100644
--- a/include/ffi.h.in
+++ b/include/ffi.h.in
@@ -221,6 +221,11 @@ typedef struct {
#endif
} ffi_cif;
+#if HAVE_LONG_DOUBLE_VARIANT
+/* Used to adjust size/alignment of ffi types. */
+void ffi_prep_types (ffi_abi abi);
+# endif
+
/* Used internally, but overridden by some architectures */
ffi_status ffi_prep_cif_core(ffi_cif *cif,
ffi_abi abi,
diff --git a/src/powerpc/ffi.c b/src/powerpc/ffi.c
index 6896065..06ebd7d 100644
--- a/src/powerpc/ffi.c
+++ b/src/powerpc/ffi.c
@@ -1,5 +1,6 @@
/* -----------------------------------------------------------------------
- ffi.c - Copyright (C) 2011 Anthony Green
+ ffi.c - Copyright (C) 2013 IBM
+ Copyright (C) 2011 Anthony Green
Copyright (C) 2011 Kyle Moffett
Copyright (C) 2008 Red Hat, Inc
Copyright (C) 2007, 2008 Free Software Foundation, Inc
@@ -27,1112 +28,60 @@
OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
-#include <ffi.h>
-#include <ffi_common.h>
-
-#include <stdlib.h>
-#include <stdio.h>
-
-
-extern void ffi_closure_SYSV (void);
-extern void FFI_HIDDEN ffi_closure_LINUX64 (void);
-
-enum {
- /* The assembly depends on these exact flags. */
- FLAG_RETURNS_SMST = 1 << (31-31), /* Used for FFI_SYSV small structs. */
- FLAG_RETURNS_NOTHING = 1 << (31-30), /* These go in cr7 */
-#ifndef __NO_FPRS__
- FLAG_RETURNS_FP = 1 << (31-29),
-#endif
- FLAG_RETURNS_64BITS = 1 << (31-28),
-
- FLAG_RETURNS_128BITS = 1 << (31-27), /* cr6 */
-
- FLAG_ARG_NEEDS_COPY = 1 << (31- 7),
- FLAG_ARG_NEEDS_PSAVE = FLAG_ARG_NEEDS_COPY, /* Used by ELFv2 */
-#ifndef __NO_FPRS__
- FLAG_FP_ARGUMENTS = 1 << (31- 6), /* cr1.eq; specified by ABI */
-#endif
- FLAG_4_GPR_ARGUMENTS = 1 << (31- 5),
- FLAG_RETVAL_REFERENCE = 1 << (31- 4)
-};
-
-/* About the SYSV ABI. */
-#define ASM_NEEDS_REGISTERS 4
-#define NUM_GPR_ARG_REGISTERS 8
-#ifndef __NO_FPRS__
-# define NUM_FPR_ARG_REGISTERS 8
-#endif
-
-/* ffi_prep_args_SYSV is called by the assembly routine once stack space
- has been allocated for the function's arguments.
-
- The stack layout we want looks like this:
-
- | Return address from ffi_call_SYSV 4bytes | higher addresses
- |--------------------------------------------|
- | Previous backchain pointer 4 | stack pointer here
- |--------------------------------------------|<+ <<< on entry to
- | Saved r28-r31 4*4 | | ffi_call_SYSV
- |--------------------------------------------| |
- | GPR registers r3-r10 8*4 | | ffi_call_SYSV
- |--------------------------------------------| |
- | FPR registers f1-f8 (optional) 8*8 | |
- |--------------------------------------------| | stack |
- | Space for copied structures | | grows |
- |--------------------------------------------| | down V
- | Parameters that didn't fit in registers | |
- |--------------------------------------------| | lower addresses
- | Space for callee's LR 4 | |
- |--------------------------------------------| | stack pointer here
- | Current backchain pointer 4 |-/ during
- |--------------------------------------------| <<< ffi_call_SYSV
-
-*/
-
-void
-ffi_prep_args_SYSV (extended_cif *ecif, unsigned *const stack)
-{
- const unsigned bytes = ecif->cif->bytes;
- const unsigned flags = ecif->cif->flags;
-
- typedef union {
- char *c;
- unsigned *u;
- long long *ll;
- float *f;
- double *d;
- } valp;
-
- /* 'stacktop' points at the previous backchain pointer. */
- valp stacktop;
-
- /* 'gpr_base' points at the space for gpr3, and grows upwards as
- we use GPR registers. */
- valp gpr_base;
- int intarg_count;
-
-#ifndef __NO_FPRS__
- /* 'fpr_base' points at the space for fpr1, and grows upwards as
- we use FPR registers. */
- valp fpr_base;
- int fparg_count;
-#endif
-
- /* 'copy_space' grows down as we put structures in it. It should
- stay 16-byte aligned. */
- valp copy_space;
-
- /* 'next_arg' grows up as we put parameters in it. */
- valp next_arg;
-
- int i;
- ffi_type **ptr;
-#ifndef __NO_FPRS__
- double double_tmp;
-#endif
- union {
- void **v;
- char **c;
- signed char **sc;
- unsigned char **uc;
- signed short **ss;
- unsigned short **us;
- unsigned int **ui;
- long long **ll;
- float **f;
- double **d;
- } p_argv;
- size_t struct_copy_size;
- unsigned gprvalue;
-
- stacktop.c = (char *) stack + bytes;
- gpr_base.u = stacktop.u - ASM_NEEDS_REGISTERS - NUM_GPR_ARG_REGISTERS;
- intarg_count = 0;
-#ifndef __NO_FPRS__
- fpr_base.d = gpr_base.d - NUM_FPR_ARG_REGISTERS;
- fparg_count = 0;
- copy_space.c = ((flags & FLAG_FP_ARGUMENTS) ? fpr_base.c : gpr_base.c);
-#else
- copy_space.c = gpr_base.c;
-#endif
- next_arg.u = stack + 2;
-
- /* Check that everything starts aligned properly. */
- FFI_ASSERT (((unsigned long) (char *) stack & 0xF) == 0);
- FFI_ASSERT (((unsigned long) copy_space.c & 0xF) == 0);
- FFI_ASSERT (((unsigned long) stacktop.c & 0xF) == 0);
- FFI_ASSERT ((bytes & 0xF) == 0);
- FFI_ASSERT (copy_space.c >= next_arg.c);
-
- /* Deal with return values that are actually pass-by-reference. */
- if (flags & FLAG_RETVAL_REFERENCE)
- {
- *gpr_base.u++ = (unsigned long) (char *) ecif->rvalue;
- intarg_count++;
- }
-
- /* Now for the arguments. */
- p_argv.v = ecif->avalue;
- for (ptr = ecif->cif->arg_types, i = ecif->cif->nargs;
- i > 0;
- i--, ptr++, p_argv.v++)
- {
- unsigned short typenum = (*ptr)->type;
-
- /* We may need to handle some values depending on ABI */
- if (ecif->cif->abi == FFI_LINUX_SOFT_FLOAT) {
- if (typenum == FFI_TYPE_FLOAT)
- typenum = FFI_TYPE_UINT32;
- if (typenum == FFI_TYPE_DOUBLE)
- typenum = FFI_TYPE_UINT64;
- if (typenum == FFI_TYPE_LONGDOUBLE)
- typenum = FFI_TYPE_UINT128;
- } else if (ecif->cif->abi != FFI_LINUX) {
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- if (typenum == FFI_TYPE_LONGDOUBLE)
- typenum = FFI_TYPE_STRUCT;
-#endif
- }
-
- /* Now test the translated value */
- switch (typenum) {
-#ifndef __NO_FPRS__
- case FFI_TYPE_FLOAT:
- /* With FFI_LINUX_SOFT_FLOAT floats are handled like UINT32. */
- double_tmp = **p_argv.f;
- if (fparg_count >= NUM_FPR_ARG_REGISTERS)
- {
- *next_arg.f = (float) double_tmp;
- next_arg.u += 1;
- intarg_count++;
- }
- else
- *fpr_base.d++ = double_tmp;
- fparg_count++;
- FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
- break;
-
- case FFI_TYPE_DOUBLE:
- /* With FFI_LINUX_SOFT_FLOAT doubles are handled like UINT64. */
- double_tmp = **p_argv.d;
-
- if (fparg_count >= NUM_FPR_ARG_REGISTERS)
- {
- if (intarg_count >= NUM_GPR_ARG_REGISTERS
- && intarg_count % 2 != 0)
- {
- intarg_count++;
- next_arg.u++;
- }
- *next_arg.d = double_tmp;
- next_arg.u += 2;
- }
- else
- *fpr_base.d++ = double_tmp;
- fparg_count++;
- FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
- break;
-
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- case FFI_TYPE_LONGDOUBLE:
- double_tmp = (*p_argv.d)[0];
-
- if (fparg_count >= NUM_FPR_ARG_REGISTERS - 1)
- {
- if (intarg_count >= NUM_GPR_ARG_REGISTERS
- && intarg_count % 2 != 0)
- {
- intarg_count++;
- next_arg.u++;
- }
- *next_arg.d = double_tmp;
- next_arg.u += 2;
- double_tmp = (*p_argv.d)[1];
- *next_arg.d = double_tmp;
- next_arg.u += 2;
- }
- else
- {
- *fpr_base.d++ = double_tmp;
- double_tmp = (*p_argv.d)[1];
- *fpr_base.d++ = double_tmp;
- }
-
- fparg_count += 2;
- FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
- break;
-#endif
-#endif /* have FPRs */
-
- /*
- * The soft float ABI for long doubles works like this, a long double
- * is passed in four consecutive GPRs if available. A maximum of 2
- * long doubles can be passed in gprs. If we do not have 4 GPRs
- * left, the long double is passed on the stack, 4-byte aligned.
- */
- case FFI_TYPE_UINT128: {
- unsigned int int_tmp = (*p_argv.ui)[0];
- unsigned int ii;
- if (intarg_count >= NUM_GPR_ARG_REGISTERS - 3) {
- if (intarg_count < NUM_GPR_ARG_REGISTERS)
- intarg_count += NUM_GPR_ARG_REGISTERS - intarg_count;
- *(next_arg.u++) = int_tmp;
- for (ii = 1; ii < 4; ii++) {
- int_tmp = (*p_argv.ui)[ii];
- *(next_arg.u++) = int_tmp;
- }
- } else {
- *(gpr_base.u++) = int_tmp;
- for (ii = 1; ii < 4; ii++) {
- int_tmp = (*p_argv.ui)[ii];
- *(gpr_base.u++) = int_tmp;
- }
- }
- intarg_count += 4;
- break;
- }
-
- case FFI_TYPE_UINT64:
- case FFI_TYPE_SINT64:
- if (intarg_count == NUM_GPR_ARG_REGISTERS-1)
- intarg_count++;
- if (intarg_count >= NUM_GPR_ARG_REGISTERS)
- {
- if (intarg_count % 2 != 0)
- {
- intarg_count++;
- next_arg.u++;
- }
- *next_arg.ll = **p_argv.ll;
- next_arg.u += 2;
- }
- else
- {
- /* whoops: abi states only certain register pairs
- * can be used for passing long long int
- * specifically (r3,r4), (r5,r6), (r7,r8),
- * (r9,r10) and if next arg is long long but
- * not correct starting register of pair then skip
- * until the proper starting register
- */
- if (intarg_count % 2 != 0)
- {
- intarg_count ++;
- gpr_base.u++;
- }
- *gpr_base.ll++ = **p_argv.ll;
- }
- intarg_count += 2;
- break;
-
- case FFI_TYPE_STRUCT:
- struct_copy_size = ((*ptr)->size + 15) & ~0xF;
- copy_space.c -= struct_copy_size;
- memcpy (copy_space.c, *p_argv.c, (*ptr)->size);
-
- gprvalue = (unsigned long) copy_space.c;
-
- FFI_ASSERT (copy_space.c > next_arg.c);
- FFI_ASSERT (flags & FLAG_ARG_NEEDS_COPY);
- goto putgpr;
-
- case FFI_TYPE_UINT8:
- gprvalue = **p_argv.uc;
- goto putgpr;
- case FFI_TYPE_SINT8:
- gprvalue = **p_argv.sc;
- goto putgpr;
- case FFI_TYPE_UINT16:
- gprvalue = **p_argv.us;
- goto putgpr;
- case FFI_TYPE_SINT16:
- gprvalue = **p_argv.ss;
- goto putgpr;
-
- case FFI_TYPE_INT:
- case FFI_TYPE_UINT32:
- case FFI_TYPE_SINT32:
- case FFI_TYPE_POINTER:
-
- gprvalue = **p_argv.ui;
-
- putgpr:
- if (intarg_count >= NUM_GPR_ARG_REGISTERS)
- *next_arg.u++ = gprvalue;
- else
- *gpr_base.u++ = gprvalue;
- intarg_count++;
- break;
- }
- }
-
- /* Check that we didn't overrun the stack... */
- FFI_ASSERT (copy_space.c >= next_arg.c);
- FFI_ASSERT (gpr_base.u <= stacktop.u - ASM_NEEDS_REGISTERS);
- /* The assert below is testing that the number of integer arguments agrees
- with the number found in ffi_prep_cif_machdep(). However, intarg_count
- is incremented whenever we place an FP arg on the stack, so account for
- that before our assert test. */
-#ifndef __NO_FPRS__
- if (fparg_count > NUM_FPR_ARG_REGISTERS)
- intarg_count -= fparg_count - NUM_FPR_ARG_REGISTERS;
- FFI_ASSERT (fpr_base.u
- <= stacktop.u - ASM_NEEDS_REGISTERS - NUM_GPR_ARG_REGISTERS);
-#endif
- FFI_ASSERT (flags & FLAG_4_GPR_ARGUMENTS || intarg_count <= 4);
-}
-
-/* About the LINUX64 ABI. */
-enum {
- NUM_GPR_ARG_REGISTERS64 = 8,
- NUM_FPR_ARG_REGISTERS64 = 13
-};
-enum { ASM_NEEDS_REGISTERS64 = 4 };
-
-#if _CALL_ELF == 2
-static unsigned int
-discover_homogeneous_aggregate (const ffi_type *t, unsigned int *elnum)
-{
- switch (t->type)
- {
- case FFI_TYPE_FLOAT:
- case FFI_TYPE_DOUBLE:
- *elnum = 1;
- return (int) t->type;
-
- case FFI_TYPE_STRUCT:;
- {
- unsigned int base_elt = 0, total_elnum = 0;
- ffi_type **el = t->elements;
- while (*el)
- {
- unsigned int el_elt, el_elnum = 0;
- el_elt = discover_homogeneous_aggregate (*el, &el_elnum);
- if (el_elt == 0
- || (base_elt && base_elt != el_elt))
- return 0;
- base_elt = el_elt;
- total_elnum += el_elnum;
- if (total_elnum > 8)
- return 0;
- el++;
- }
- *elnum = total_elnum;
- return base_elt;
- }
-
- default:
- return 0;
- }
-}
-#endif
-
-
-/* ffi_prep_args64 is called by the assembly routine once stack space
- has been allocated for the function's arguments.
-
- The stack layout we want looks like this:
-
- | Ret addr from ffi_call_LINUX64 8bytes | higher addresses
- |--------------------------------------------|
- | CR save area 8bytes |
- |--------------------------------------------|
- | Previous backchain pointer 8 | stack pointer here
- |--------------------------------------------|<+ <<< on entry to
- | Saved r28-r31 4*8 | | ffi_call_LINUX64
- |--------------------------------------------| |
- | GPR registers r3-r10 8*8 | |
- |--------------------------------------------| |
- | FPR registers f1-f13 (optional) 13*8 | |
- |--------------------------------------------| |
- | Parameter save area | |
- |--------------------------------------------| |
- | TOC save area 8 | |
- |--------------------------------------------| | stack |
- | Linker doubleword 8 | | grows |
- |--------------------------------------------| | down V
- | Compiler doubleword 8 | |
- |--------------------------------------------| | lower addresses
- | Space for callee's LR 8 | |
- |--------------------------------------------| |
- | CR save area 8 | |
- |--------------------------------------------| | stack pointer here
- | Current backchain pointer 8 |-/ during
- |--------------------------------------------| <<< ffi_call_LINUX64
-
-*/
+#include "ffi.h"
+#include "ffi_common.h"
+#include "ffi_powerpc.h"
+#if HAVE_LONG_DOUBLE_VARIANT
+/* Adjust ffi_type_longdouble. */
void FFI_HIDDEN
-ffi_prep_args64 (extended_cif *ecif, unsigned long *const stack)
+ffi_prep_types (ffi_abi abi)
{
- const unsigned long bytes = ecif->cif->bytes;
- const unsigned long flags = ecif->cif->flags;
-
- typedef union {
- char *c;
- unsigned long *ul;
- float *f;
- double *d;
- size_t p;
- } valp;
-
- /* 'stacktop' points at the previous backchain pointer. */
- valp stacktop;
-
- /* 'next_arg' points at the space for gpr3, and grows upwards as
- we use GPR registers, then continues at rest. */
- valp gpr_base;
- valp gpr_end;
- valp rest;
- valp next_arg;
-
- /* 'fpr_base' points at the space for fpr3, and grows upwards as
- we use FPR registers. */
- valp fpr_base;
- unsigned int fparg_count;
-
- unsigned int i, words, nargs, nfixedargs;
- ffi_type **ptr;
- double double_tmp;
- union {
- void **v;
- char **c;
- signed char **sc;
- unsigned char **uc;
- signed short **ss;
- unsigned short **us;
- signed int **si;
- unsigned int **ui;
- unsigned long **ul;
- float **f;
- double **d;
- } p_argv;
- unsigned long gprvalue;
-#ifdef __STRUCT_PARM_ALIGN__
- unsigned long align;
-#endif
-
- stacktop.c = (char *) stack + bytes;
- gpr_base.ul = stacktop.ul - ASM_NEEDS_REGISTERS64 - NUM_GPR_ARG_REGISTERS64;
- gpr_end.ul = gpr_base.ul + NUM_GPR_ARG_REGISTERS64;
-#if _CALL_ELF == 2
- rest.ul = stack + 4 + NUM_GPR_ARG_REGISTERS64;
-#else
- rest.ul = stack + 6 + NUM_GPR_ARG_REGISTERS64;
-#endif
- fpr_base.d = gpr_base.d - NUM_FPR_ARG_REGISTERS64;
- fparg_count = 0;
- next_arg.ul = gpr_base.ul;
-
- /* Check that everything starts aligned properly. */
- FFI_ASSERT (((unsigned long) (char *) stack & 0xF) == 0);
- FFI_ASSERT (((unsigned long) stacktop.c & 0xF) == 0);
- FFI_ASSERT ((bytes & 0xF) == 0);
-
- /* Deal with return values that are actually pass-by-reference. */
- if (flags & FLAG_RETVAL_REFERENCE)
- *next_arg.ul++ = (unsigned long) (char *) ecif->rvalue;
-
- /* Now for the arguments. */
- p_argv.v = ecif->avalue;
- nargs = ecif->cif->nargs;
- nfixedargs = ecif->cif->nfixedargs;
- for (ptr = ecif->cif->arg_types, i = 0;
- i < nargs;
- i++, ptr++, p_argv.v++)
- {
- unsigned int elt, elnum;
-
- switch ((*ptr)->type)
- {
- case FFI_TYPE_FLOAT:
- double_tmp = **p_argv.f;
- if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
- *fpr_base.d++ = double_tmp;
- else
- *next_arg.f = (float) double_tmp;
- if (++next_arg.ul == gpr_end.ul)
- next_arg.ul = rest.ul;
- fparg_count++;
- FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
- break;
-
- case FFI_TYPE_DOUBLE:
- double_tmp = **p_argv.d;
- if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
- *fpr_base.d++ = double_tmp;
- else
- *next_arg.d = double_tmp;
- if (++next_arg.ul == gpr_end.ul)
- next_arg.ul = rest.ul;
- fparg_count++;
- FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
- break;
-
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- case FFI_TYPE_LONGDOUBLE:
- double_tmp = (*p_argv.d)[0];
- if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
- *fpr_base.d++ = double_tmp;
- else
- *next_arg.d = double_tmp;
- if (++next_arg.ul == gpr_end.ul)
- next_arg.ul = rest.ul;
- fparg_count++;
- double_tmp = (*p_argv.d)[1];
- if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
- *fpr_base.d++ = double_tmp;
- else
- *next_arg.d = double_tmp;
- if (++next_arg.ul == gpr_end.ul)
- next_arg.ul = rest.ul;
- fparg_count++;
- FFI_ASSERT (__LDBL_MANT_DIG__ == 106);
- FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
- break;
-#endif
-
- case FFI_TYPE_STRUCT:
-#ifdef __STRUCT_PARM_ALIGN__
- align = (*ptr)->alignment;
- if (align > __STRUCT_PARM_ALIGN__)
- align = __STRUCT_PARM_ALIGN__;
- if (align > 1)
- next_arg.p = ALIGN (next_arg.p, align);
-#endif
- elt = 0;
-#if _CALL_ELF == 2
- elt = discover_homogeneous_aggregate (*ptr, &elnum);
-#endif
- if (elt)
- {
- union {
- void *v;
- float *f;
- double *d;
- } arg;
-
- arg.v = *p_argv.v;
- if (elt == FFI_TYPE_FLOAT)
- {
- do
- {
- double_tmp = *arg.f++;
- if (fparg_count < NUM_FPR_ARG_REGISTERS64
- && i < nfixedargs)
- *fpr_base.d++ = double_tmp;
- else
- *next_arg.f = (float) double_tmp;
- if (++next_arg.f == gpr_end.f)
- next_arg.f = rest.f;
- fparg_count++;
- }
- while (--elnum != 0);
- if ((next_arg.p & 3) != 0)
- {
- if (++next_arg.f == gpr_end.f)
- next_arg.f = rest.f;
- }
- }
- else
- do
- {
- double_tmp = *arg.d++;
- if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
- *fpr_base.d++ = double_tmp;
- else
- *next_arg.d = double_tmp;
- if (++next_arg.d == gpr_end.d)
- next_arg.d = rest.d;
- fparg_count++;
- }
- while (--elnum != 0);
- }
- else
- {
- words = ((*ptr)->size + 7) / 8;
- if (next_arg.ul >= gpr_base.ul && next_arg.ul + words > gpr_end.ul)
- {
- size_t first = gpr_end.c - next_arg.c;
- memcpy (next_arg.c, *p_argv.c, first);
- memcpy (rest.c, *p_argv.c + first, (*ptr)->size - first);
- next_arg.c = rest.c + words * 8 - first;
- }
- else
- {
- char *where = next_arg.c;
-
-#ifndef __LITTLE_ENDIAN__
- /* Structures with size less than eight bytes are passed
- left-padded. */
- if ((*ptr)->size < 8)
- where += 8 - (*ptr)->size;
-#endif
- memcpy (where, *p_argv.c, (*ptr)->size);
- next_arg.ul += words;
- if (next_arg.ul == gpr_end.ul)
- next_arg.ul = rest.ul;
- }
- }
- break;
-
- case FFI_TYPE_UINT8:
- gprvalue = **p_argv.uc;
- goto putgpr;
- case FFI_TYPE_SINT8:
- gprvalue = **p_argv.sc;
- goto putgpr;
- case FFI_TYPE_UINT16:
- gprvalue = **p_argv.us;
- goto putgpr;
- case FFI_TYPE_SINT16:
- gprvalue = **p_argv.ss;
- goto putgpr;
- case FFI_TYPE_UINT32:
- gprvalue = **p_argv.ui;
- goto putgpr;
- case FFI_TYPE_INT:
- case FFI_TYPE_SINT32:
- gprvalue = **p_argv.si;
- goto putgpr;
-
- case FFI_TYPE_UINT64:
- case FFI_TYPE_SINT64:
- case FFI_TYPE_POINTER:
- gprvalue = **p_argv.ul;
- putgpr:
- *next_arg.ul++ = gprvalue;
- if (next_arg.ul == gpr_end.ul)
- next_arg.ul = rest.ul;
- break;
- }
- }
-
- FFI_ASSERT (flags & FLAG_4_GPR_ARGUMENTS
- || (next_arg.ul >= gpr_base.ul
- && next_arg.ul <= gpr_base.ul + 4));
+# if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+# ifdef POWERPC64
+ ffi_prep_types_linux64 (abi);
+# else
+ ffi_prep_types_sysv (abi);
+# endif
+# endif
}
-
-
+#endif
/* Perform machine dependent cif processing */
-static ffi_status
-ffi_prep_cif_machdep_core (ffi_cif *cif)
+ffi_status FFI_HIDDEN
+ffi_prep_cif_machdep (ffi_cif *cif)
{
- /* All this is for the SYSV and LINUX64 ABI. */
- ffi_type **ptr;
- unsigned bytes;
- unsigned i, fparg_count = 0, intarg_count = 0;
- unsigned flags = cif->flags;
- unsigned struct_copy_size = 0;
- unsigned type = cif->rtype->type;
- unsigned size = cif->rtype->size;
-
- /* The machine-independent calculation of cif->bytes doesn't work
- for us. Redo the calculation. */
- if (cif->abi != FFI_LINUX64)
- {
- /* Space for the frame pointer, callee's LR, and the asm's temp regs. */
- bytes = (2 + ASM_NEEDS_REGISTERS) * sizeof (int);
-
- /* Space for the GPR registers. */
- bytes += NUM_GPR_ARG_REGISTERS * sizeof (int);
- }
- else
- {
- /* 64-bit ABI. */
-#if _CALL_ELF == 2
- /* Space for backchain, CR, LR, TOC and the asm's temp regs. */
- bytes = (4 + ASM_NEEDS_REGISTERS64) * sizeof (long);
-
- /* Space for the general registers. */
- bytes += NUM_GPR_ARG_REGISTERS64 * sizeof (long);
-#else
- /* Space for backchain, CR, LR, cc/ld doubleword, TOC and the asm's temp
- regs. */
- bytes = (6 + ASM_NEEDS_REGISTERS64) * sizeof (long);
-
- /* Space for the mandatory parm save area and general registers. */
- bytes += 2 * NUM_GPR_ARG_REGISTERS64 * sizeof (long);
-#endif
- }
-
- /* Return value handling. The rules for SYSV are as follows:
- - 32-bit (or less) integer values are returned in gpr3;
- - Structures of size <= 4 bytes also returned in gpr3;
- - 64-bit integer values and structures between 5 and 8 bytes are returned
- in gpr3 and gpr4;
- - Single/double FP values are returned in fpr1;
- - Larger structures are allocated space and a pointer is passed as
- the first argument.
- - long doubles (if not equivalent to double) are returned in
- fpr1,fpr2 for Linux and as for large structs for SysV.
- For LINUX64:
- - integer values in gpr3;
- - Structures/Unions by reference;
- - Single/double FP values in fpr1, long double in fpr1,fpr2.
- - soft-float float/doubles are treated as UINT32/UINT64 respectivley.
- - soft-float long doubles are returned in gpr3-gpr6. */
- /* First translate for softfloat/nonlinux */
- if (cif->abi == FFI_LINUX_SOFT_FLOAT)
- {
- if (type == FFI_TYPE_FLOAT)
- type = FFI_TYPE_UINT32;
- if (type == FFI_TYPE_DOUBLE)
- type = FFI_TYPE_UINT64;
- if (type == FFI_TYPE_LONGDOUBLE)
- type = FFI_TYPE_UINT128;
- }
- else if (cif->abi != FFI_LINUX
- && cif->abi != FFI_LINUX64)
- {
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- if (type == FFI_TYPE_LONGDOUBLE)
- type = FFI_TYPE_STRUCT;
-#endif
- }
-
- switch (type)
- {
-#ifndef __NO_FPRS__
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- case FFI_TYPE_LONGDOUBLE:
- flags |= FLAG_RETURNS_128BITS;
- /* Fall through. */
-#endif
- case FFI_TYPE_DOUBLE:
- flags |= FLAG_RETURNS_64BITS;
- /* Fall through. */
- case FFI_TYPE_FLOAT:
- flags |= FLAG_RETURNS_FP;
- break;
-#endif
-
- case FFI_TYPE_UINT128:
- flags |= FLAG_RETURNS_128BITS;
- /* Fall through. */
- case FFI_TYPE_UINT64:
- case FFI_TYPE_SINT64:
- flags |= FLAG_RETURNS_64BITS;
- break;
-
- case FFI_TYPE_STRUCT:
- /*
- * The final SYSV ABI says that structures smaller or equal 8 bytes
- * are returned in r3/r4. The FFI_GCC_SYSV ABI instead returns them
- * in memory.
- *
- * NOTE: The assembly code can safely assume that it just needs to
- * store both r3 and r4 into a 8-byte word-aligned buffer, as
- * we allocate a temporary buffer in ffi_call() if this flag is
- * set.
- */
- if (cif->abi == FFI_SYSV && size <= 8)
- {
- flags |= FLAG_RETURNS_SMST;
- break;
- }
-#if _CALL_ELF == 2
- if (cif->abi == FFI_LINUX64)
- {
- unsigned int elt, elnum;
- elt = discover_homogeneous_aggregate (cif->rtype, &elnum);
- if (elt)
- {
- if (elt == FFI_TYPE_DOUBLE)
- flags |= FLAG_RETURNS_64BITS;
- flags |= FLAG_RETURNS_FP | FLAG_RETURNS_SMST;
- break;
- }
- if (size <= 16)
- {
- flags |= FLAG_RETURNS_SMST;
- break;
- }
- }
-#endif
- intarg_count++;
- flags |= FLAG_RETVAL_REFERENCE;
- /* Fall through. */
- case FFI_TYPE_VOID:
- flags |= FLAG_RETURNS_NOTHING;
- break;
-
- default:
- /* Returns 32-bit integer, or similar. Nothing to do here. */
- break;
- }
-
- if (cif->abi != FFI_LINUX64)
- /* The first NUM_GPR_ARG_REGISTERS words of integer arguments, and the
- first NUM_FPR_ARG_REGISTERS fp arguments, go in registers; the rest
- goes on the stack. Structures and long doubles (if not equivalent
- to double) are passed as a pointer to a copy of the structure.
- Stuff on the stack needs to keep proper alignment. */
- for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
- {
- unsigned short typenum = (*ptr)->type;
-
- /* We may need to handle some values depending on ABI */
- if (cif->abi == FFI_LINUX_SOFT_FLOAT) {
- if (typenum == FFI_TYPE_FLOAT)
- typenum = FFI_TYPE_UINT32;
- if (typenum == FFI_TYPE_DOUBLE)
- typenum = FFI_TYPE_UINT64;
- if (typenum == FFI_TYPE_LONGDOUBLE)
- typenum = FFI_TYPE_UINT128;
- } else if (cif->abi != FFI_LINUX && cif->abi != FFI_LINUX64) {
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- if (typenum == FFI_TYPE_LONGDOUBLE)
- typenum = FFI_TYPE_STRUCT;
-#endif
- }
-
- switch (typenum) {
-#ifndef __NO_FPRS__
- case FFI_TYPE_FLOAT:
- fparg_count++;
- /* floating singles are not 8-aligned on stack */
- break;
-
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- case FFI_TYPE_LONGDOUBLE:
- fparg_count++;
- /* Fall thru */
-#endif
- case FFI_TYPE_DOUBLE:
- fparg_count++;
- /* If this FP arg is going on the stack, it must be
- 8-byte-aligned. */
- if (fparg_count > NUM_FPR_ARG_REGISTERS
- && intarg_count >= NUM_GPR_ARG_REGISTERS
- && intarg_count % 2 != 0)
- intarg_count++;
- break;
-#endif
- case FFI_TYPE_UINT128:
- /*
- * A long double in FFI_LINUX_SOFT_FLOAT can use only a set
- * of four consecutive gprs. If we do not have enough, we
- * have to adjust the intarg_count value.
- */
- if (intarg_count >= NUM_GPR_ARG_REGISTERS - 3
- && intarg_count < NUM_GPR_ARG_REGISTERS)
- intarg_count = NUM_GPR_ARG_REGISTERS;
- intarg_count += 4;
- break;
-
- case FFI_TYPE_UINT64:
- case FFI_TYPE_SINT64:
- /* 'long long' arguments are passed as two words, but
- either both words must fit in registers or both go
- on the stack. If they go on the stack, they must
- be 8-byte-aligned.
-
- Also, only certain register pairs can be used for
- passing long long int -- specifically (r3,r4), (r5,r6),
- (r7,r8), (r9,r10).
- */
- if (intarg_count == NUM_GPR_ARG_REGISTERS-1
- || intarg_count % 2 != 0)
- intarg_count++;
- intarg_count += 2;
- break;
-
- case FFI_TYPE_STRUCT:
- /* We must allocate space for a copy of these to enforce
- pass-by-value. Pad the space up to a multiple of 16
- bytes (the maximum alignment required for anything under
- the SYSV ABI). */
- struct_copy_size += ((*ptr)->size + 15) & ~0xF;
- /* Fall through (allocate space for the pointer). */
-
- case FFI_TYPE_POINTER:
- case FFI_TYPE_INT:
- case FFI_TYPE_UINT32:
- case FFI_TYPE_SINT32:
- case FFI_TYPE_UINT16:
- case FFI_TYPE_SINT16:
- case FFI_TYPE_UINT8:
- case FFI_TYPE_SINT8:
- /* Everything else is passed as a 4-byte word in a GPR, either
- the object itself or a pointer to it. */
- intarg_count++;
- break;
- default:
- FFI_ASSERT (0);
- }
- }
- else
- for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
- {
- unsigned int elt, elnum;
-#ifdef __STRUCT_PARM_ALIGN__
- unsigned int align;
-#endif
-
- switch ((*ptr)->type)
- {
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- case FFI_TYPE_LONGDOUBLE:
- fparg_count += 2;
- intarg_count += 2;
- if (fparg_count > NUM_FPR_ARG_REGISTERS64)
- flags |= FLAG_ARG_NEEDS_PSAVE;
- break;
-#endif
- case FFI_TYPE_FLOAT:
- case FFI_TYPE_DOUBLE:
- fparg_count++;
- intarg_count++;
- if (fparg_count > NUM_FPR_ARG_REGISTERS64)
- flags |= FLAG_ARG_NEEDS_PSAVE;
- break;
-
- case FFI_TYPE_STRUCT:
-#ifdef __STRUCT_PARM_ALIGN__
- align = (*ptr)->alignment;
- if (align > __STRUCT_PARM_ALIGN__)
- align = __STRUCT_PARM_ALIGN__;
- align = align / 8;
- if (align > 1)
- intarg_count = ALIGN (intarg_count, align);
-#endif
- intarg_count += ((*ptr)->size + 7) / 8;
- elt = 0;
-#if _CALL_ELF == 2
- elt = discover_homogeneous_aggregate (*ptr, &elnum);
-#endif
- if (elt)
- {
- fparg_count += elnum;
- if (fparg_count > NUM_FPR_ARG_REGISTERS64)
- flags |= FLAG_ARG_NEEDS_PSAVE;
- }
- else
- {
- if (intarg_count > NUM_GPR_ARG_REGISTERS64)
- flags |= FLAG_ARG_NEEDS_PSAVE;
- }
- break;
-
- case FFI_TYPE_POINTER:
- case FFI_TYPE_UINT64:
- case FFI_TYPE_SINT64:
- case FFI_TYPE_INT:
- case FFI_TYPE_UINT32:
- case FFI_TYPE_SINT32:
- case FFI_TYPE_UINT16:
- case FFI_TYPE_SINT16:
- case FFI_TYPE_UINT8:
- case FFI_TYPE_SINT8:
- /* Everything else is passed as a 8-byte word in a GPR, either
- the object itself or a pointer to it. */
- intarg_count++;
- if (intarg_count > NUM_GPR_ARG_REGISTERS64)
- flags |= FLAG_ARG_NEEDS_PSAVE;
- break;
- default:
- FFI_ASSERT (0);
- }
- }
-
-#ifndef __NO_FPRS__
- if (fparg_count != 0)
- flags |= FLAG_FP_ARGUMENTS;
-#endif
- if (intarg_count > 4)
- flags |= FLAG_4_GPR_ARGUMENTS;
- if (struct_copy_size != 0)
- flags |= FLAG_ARG_NEEDS_COPY;
-
- if (cif->abi != FFI_LINUX64)
- {
-#ifndef __NO_FPRS__
- /* Space for the FPR registers, if needed. */
- if (fparg_count != 0)
- bytes += NUM_FPR_ARG_REGISTERS * sizeof (double);
-#endif
-
- /* Stack space. */
- if (intarg_count > NUM_GPR_ARG_REGISTERS)
- bytes += (intarg_count - NUM_GPR_ARG_REGISTERS) * sizeof (int);
-#ifndef __NO_FPRS__
- if (fparg_count > NUM_FPR_ARG_REGISTERS)
- bytes += (fparg_count - NUM_FPR_ARG_REGISTERS) * sizeof (double);
-#endif
- }
- else
- {
-#ifndef __NO_FPRS__
- /* Space for the FPR registers, if needed. */
- if (fparg_count != 0)
- bytes += NUM_FPR_ARG_REGISTERS64 * sizeof (double);
-#endif
-
- /* Stack space. */
-#if _CALL_ELF == 2
- if ((flags & FLAG_ARG_NEEDS_PSAVE) != 0)
- bytes += intarg_count * sizeof (long);
+#ifdef POWERPC64
+ return ffi_prep_cif_linux64 (cif);
#else
- if (intarg_count > NUM_GPR_ARG_REGISTERS64)
- bytes += (intarg_count - NUM_GPR_ARG_REGISTERS64) * sizeof (long);
+ return ffi_prep_cif_sysv (cif);
#endif
- }
-
- /* The stack space allocated needs to be a multiple of 16 bytes. */
- bytes = (bytes + 15) & ~0xF;
-
- /* Add in the space for the copied structures. */
- bytes += struct_copy_size;
-
- cif->flags = flags;
- cif->bytes = bytes;
-
- return FFI_OK;
-}
-
-ffi_status
-ffi_prep_cif_machdep (ffi_cif *cif)
-{
- cif->nfixedargs = cif->nargs;
- return ffi_prep_cif_machdep_core (cif);
}
-ffi_status
+ffi_status FFI_HIDDEN
ffi_prep_cif_machdep_var (ffi_cif *cif,
unsigned int nfixedargs,
- unsigned int ntotalargs MAYBE_UNUSED)
+ unsigned int ntotalargs)
{
- cif->nfixedargs = nfixedargs;
-#if _CALL_ELF == 2
- if (cif->abi == FFI_LINUX64)
- cif->flags |= FLAG_ARG_NEEDS_PSAVE;
+#ifdef POWERPC64
+ return ffi_prep_cif_linux64_var (cif, nfixedargs, ntotalargs);
+#else
+ return ffi_prep_cif_sysv_var (cif, nfixedargs, ntotalargs);
#endif
- return ffi_prep_cif_machdep_core (cif);
}
-extern void ffi_call_SYSV(extended_cif *, unsigned, unsigned, unsigned *,
- void (*fn)(void));
-extern void FFI_HIDDEN ffi_call_LINUX64(extended_cif *, unsigned long,
- unsigned long, unsigned long *,
- void (*fn)(void));
-
void
ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
{
- /*
- * The final SYSV ABI says that structures smaller or equal 8 bytes
- * are returned in r3/r4. The FFI_GCC_SYSV ABI instead returns them
- * in memory.
- *
- * We bounce-buffer SYSV small struct return values so that sysv.S
- * can write r3 and r4 to memory without worrying about struct size.
- *
- * For ELFv2 ABI, use a bounce buffer for homogeneous structs too,
- * for similar reasons.
- */
+ /* The final SYSV ABI says that structures smaller or equal 8 bytes
+ are returned in r3/r4. A draft ABI used by linux instead returns
+ them in memory.
+
+ We bounce-buffer SYSV small struct return values so that sysv.S
+ can write r3 and r4 to memory without worrying about struct size.
+
+ For ELFv2 ABI, use a bounce buffer for homogeneous structs too,
+ for similar reasons. */
unsigned long smst_buffer[8];
extended_cif ecif;
@@ -1147,26 +96,11 @@ ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
else if (!rvalue && cif->rtype->type == FFI_TYPE_STRUCT)
ecif.rvalue = alloca (cif->rtype->size);
- switch (cif->abi)
- {
-#ifndef POWERPC64
-# ifndef __NO_FPRS__
- case FFI_SYSV:
- case FFI_GCC_SYSV:
- case FFI_LINUX:
-# endif
- case FFI_LINUX_SOFT_FLOAT:
- ffi_call_SYSV (&ecif, -cif->bytes, cif->flags, ecif.rvalue, fn);
- break;
+#ifdef POWERPC64
+ ffi_call_LINUX64 (&ecif, -(long) cif->bytes, cif->flags, ecif.rvalue, fn);
#else
- case FFI_LINUX64:
- ffi_call_LINUX64 (&ecif, -(long) cif->bytes, cif->flags, ecif.rvalue, fn);
- break;
+ ffi_call_SYSV (&ecif, -cif->bytes, cif->flags, ecif.rvalue, fn);
#endif
- default:
- FFI_ASSERT (0);
- break;
- }
/* Check for a bounce-buffered return value */
if (rvalue && ecif.rvalue == smst_buffer)
@@ -1175,36 +109,23 @@ ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
#ifndef __LITTLE_ENDIAN__
/* The SYSV ABI returns a structure of up to 4 bytes in size
left-padded in r3. */
- if (cif->abi == FFI_SYSV && rsize <= 4)
+# ifndef POWERPC64
+ if (rsize <= 4)
memcpy (rvalue, (char *) smst_buffer + 4 - rsize, rsize);
- /* The SYSV ABI returns a structure of up to 8 bytes in size
- left-padded in r3/r4, and the ELFv2 ABI similarly returns a
- structure of up to 8 bytes in size left-padded in r3. */
- else if (rsize <= 8)
- memcpy (rvalue, (char *) smst_buffer + 8 - rsize, rsize);
else
+# endif
+ /* The SYSV ABI returns a structure of up to 8 bytes in size
+ left-padded in r3/r4, and the ELFv2 ABI similarly returns a
+ structure of up to 8 bytes in size left-padded in r3. */
+ if (rsize <= 8)
+ memcpy (rvalue, (char *) smst_buffer + 8 - rsize, rsize);
+ else
#endif
- memcpy (rvalue, smst_buffer, rsize);
+ memcpy (rvalue, smst_buffer, rsize);
}
}
-#if !defined POWERPC64 || _CALL_ELF == 2
-#define MIN_CACHE_LINE_SIZE 8
-
-static void
-flush_icache (char *wraddr, char *xaddr, int size)
-{
- int i;
- for (i = 0; i < size; i += MIN_CACHE_LINE_SIZE)
- __asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;"
- : : "r" (xaddr + i), "r" (wraddr + i) : "memory");
- __asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;" "sync;" "isync;"
- : : "r"(xaddr + size - 1), "r"(wraddr + size - 1)
- : "memory");
-}
-#endif
-
ffi_status
ffi_prep_closure_loc (ffi_closure *closure,
ffi_cif *cif,
@@ -1213,593 +134,8 @@ ffi_prep_closure_loc (ffi_closure *closure,
void *codeloc)
{
#ifdef POWERPC64
-# if _CALL_ELF == 2
- unsigned int *tramp = (unsigned int *) &closure->tramp[0];
-
- if (cif->abi != FFI_LINUX64)
- return FFI_BAD_ABI;
-
- tramp[0] = 0xe96c0018; /* 0: ld 11,2f-0b(12) */
- tramp[1] = 0xe98c0010; /* ld 12,1f-0b(12) */
- tramp[2] = 0x7d8903a6; /* mtctr 12 */
- tramp[3] = 0x4e800420; /* bctr */
- /* 1: .quad function_addr */
- /* 2: .quad context */
- *(void **) &tramp[4] = (void *) ffi_closure_LINUX64;
- *(void **) &tramp[6] = codeloc;
- flush_icache ((char *)tramp, (char *)codeloc, FFI_TRAMPOLINE_SIZE);
-# else
- void **tramp = (void **) &closure->tramp[0];
-
- if (cif->abi != FFI_LINUX64)
- return FFI_BAD_ABI;
- /* Copy function address and TOC from ffi_closure_LINUX64. */
- memcpy (tramp, (char *) ffi_closure_LINUX64, 16);
- tramp[2] = codeloc;
-# endif
+ return ffi_prep_closure_loc_linux64 (closure, cif, fun, user_data, codeloc);
#else
- unsigned int *tramp;
-
- if (! (cif->abi == FFI_GCC_SYSV
- || cif->abi == FFI_SYSV
- || cif->abi == FFI_LINUX
- || cif->abi == FFI_LINUX_SOFT_FLOAT))
- return FFI_BAD_ABI;
-
- tramp = (unsigned int *) &closure->tramp[0];
- tramp[0] = 0x7c0802a6; /* mflr r0 */
- tramp[1] = 0x4800000d; /* bl 10 <trampoline_initial+0x10> */
- tramp[4] = 0x7d6802a6; /* mflr r11 */
- tramp[5] = 0x7c0803a6; /* mtlr r0 */
- tramp[6] = 0x800b0000; /* lwz r0,0(r11) */
- tramp[7] = 0x816b0004; /* lwz r11,4(r11) */
- tramp[8] = 0x7c0903a6; /* mtctr r0 */
- tramp[9] = 0x4e800420; /* bctr */
- *(void **) &tramp[2] = (void *) ffi_closure_SYSV; /* function */
- *(void **) &tramp[3] = codeloc; /* context */
-
- /* Flush the icache. */
- flush_icache ((char *)tramp, (char *)codeloc, FFI_TRAMPOLINE_SIZE);
-#endif
-
- closure->cif = cif;
- closure->fun = fun;
- closure->user_data = user_data;
-
- return FFI_OK;
-}
-
-typedef union
-{
- float f;
- double d;
-} ffi_dblfl;
-
-int ffi_closure_helper_SYSV (ffi_closure *, void *, unsigned long *,
- ffi_dblfl *, unsigned long *);
-
-/* Basically the trampoline invokes ffi_closure_SYSV, and on
- * entry, r11 holds the address of the closure.
- * After storing the registers that could possibly contain
- * parameters to be passed into the stack frame and setting
- * up space for a return value, ffi_closure_SYSV invokes the
- * following helper function to do most of the work
- */
-
-int
-ffi_closure_helper_SYSV (ffi_closure *closure, void *rvalue,
- unsigned long *pgr, ffi_dblfl *pfr,
- unsigned long *pst)
-{
- /* rvalue is the pointer to space for return value in closure assembly */
- /* pgr is the pointer to where r3-r10 are stored in ffi_closure_SYSV */
- /* pfr is the pointer to where f1-f8 are stored in ffi_closure_SYSV */
- /* pst is the pointer to outgoing parameter stack in original caller */
-
- void ** avalue;
- ffi_type ** arg_types;
- long i, avn;
-#ifndef __NO_FPRS__
- long nf = 0; /* number of floating registers already used */
-#endif
- long ng = 0; /* number of general registers already used */
-
- ffi_cif *cif = closure->cif;
- unsigned size = cif->rtype->size;
- unsigned short rtypenum = cif->rtype->type;
-
- avalue = alloca (cif->nargs * sizeof (void *));
-
- /* First translate for softfloat/nonlinux */
- if (cif->abi == FFI_LINUX_SOFT_FLOAT) {
- if (rtypenum == FFI_TYPE_FLOAT)
- rtypenum = FFI_TYPE_UINT32;
- if (rtypenum == FFI_TYPE_DOUBLE)
- rtypenum = FFI_TYPE_UINT64;
- if (rtypenum == FFI_TYPE_LONGDOUBLE)
- rtypenum = FFI_TYPE_UINT128;
- } else if (cif->abi != FFI_LINUX && cif->abi != FFI_LINUX64) {
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- if (rtypenum == FFI_TYPE_LONGDOUBLE)
- rtypenum = FFI_TYPE_STRUCT;
-#endif
- }
-
-
- /* Copy the caller's structure return value address so that the closure
- returns the data directly to the caller.
- For FFI_SYSV the result is passed in r3/r4 if the struct size is less
- or equal 8 bytes. */
- if (rtypenum == FFI_TYPE_STRUCT && ((cif->abi != FFI_SYSV) || (size > 8))) {
- rvalue = (void *) *pgr;
- ng++;
- pgr++;
- }
-
- i = 0;
- avn = cif->nargs;
- arg_types = cif->arg_types;
-
- /* Grab the addresses of the arguments from the stack frame. */
- while (i < avn) {
- unsigned short typenum = arg_types[i]->type;
-
- /* We may need to handle some values depending on ABI */
- if (cif->abi == FFI_LINUX_SOFT_FLOAT) {
- if (typenum == FFI_TYPE_FLOAT)
- typenum = FFI_TYPE_UINT32;
- if (typenum == FFI_TYPE_DOUBLE)
- typenum = FFI_TYPE_UINT64;
- if (typenum == FFI_TYPE_LONGDOUBLE)
- typenum = FFI_TYPE_UINT128;
- } else if (cif->abi != FFI_LINUX && cif->abi != FFI_LINUX64) {
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- if (typenum == FFI_TYPE_LONGDOUBLE)
- typenum = FFI_TYPE_STRUCT;
+ return ffi_prep_closure_loc_sysv (closure, cif, fun, user_data, codeloc);
#endif
- }
-
- switch (typenum) {
-#ifndef __NO_FPRS__
- case FFI_TYPE_FLOAT:
- /* unfortunately float values are stored as doubles
- * in the ffi_closure_SYSV code (since we don't check
- * the type in that routine).
- */
-
- /* there are 8 64bit floating point registers */
-
- if (nf < 8)
- {
- double temp = pfr->d;
- pfr->f = (float) temp;
- avalue[i] = pfr;
- nf++;
- pfr++;
- }
- else
- {
- /* FIXME? here we are really changing the values
- * stored in the original calling routines outgoing
- * parameter stack. This is probably a really
- * naughty thing to do but...
- */
- avalue[i] = pst;
- pst += 1;
- }
- break;
-
- case FFI_TYPE_DOUBLE:
- /* On the outgoing stack all values are aligned to 8 */
- /* there are 8 64bit floating point registers */
-
- if (nf < 8)
- {
- avalue[i] = pfr;
- nf++;
- pfr++;
- }
- else
- {
- if (((long) pst) & 4)
- pst++;
- avalue[i] = pst;
- pst += 2;
- }
- break;
-
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- case FFI_TYPE_LONGDOUBLE:
- if (nf < 7)
- {
- avalue[i] = pfr;
- pfr += 2;
- nf += 2;
- }
- else
- {
- if (((long) pst) & 4)
- pst++;
- avalue[i] = pst;
- pst += 4;
- nf = 8;
- }
- break;
-#endif
-#endif /* have FPRS */
-
- case FFI_TYPE_UINT128:
- /*
- * Test if for the whole long double, 4 gprs are available.
- * otherwise the stuff ends up on the stack.
- */
- if (ng < 5) {
- avalue[i] = pgr;
- pgr += 4;
- ng += 4;
- } else {
- avalue[i] = pst;
- pst += 4;
- ng = 8+4;
- }
- break;
-
- case FFI_TYPE_SINT8:
- case FFI_TYPE_UINT8:
-#ifndef __LITTLE_ENDIAN__
- /* there are 8 gpr registers used to pass values */
- if (ng < 8)
- {
- avalue[i] = (char *) pgr + 3;
- ng++;
- pgr++;
- }
- else
- {
- avalue[i] = (char *) pst + 3;
- pst++;
- }
- break;
-#endif
-
- case FFI_TYPE_SINT16:
- case FFI_TYPE_UINT16:
-#ifndef __LITTLE_ENDIAN__
- /* there are 8 gpr registers used to pass values */
- if (ng < 8)
- {
- avalue[i] = (char *) pgr + 2;
- ng++;
- pgr++;
- }
- else
- {
- avalue[i] = (char *) pst + 2;
- pst++;
- }
- break;
-#endif
-
- case FFI_TYPE_SINT32:
- case FFI_TYPE_UINT32:
- case FFI_TYPE_POINTER:
- /* there are 8 gpr registers used to pass values */
- if (ng < 8)
- {
- avalue[i] = pgr;
- ng++;
- pgr++;
- }
- else
- {
- avalue[i] = pst;
- pst++;
- }
- break;
-
- case FFI_TYPE_STRUCT:
- /* Structs are passed by reference. The address will appear in a
- gpr if it is one of the first 8 arguments. */
- if (ng < 8)
- {
- avalue[i] = (void *) *pgr;
- ng++;
- pgr++;
- }
- else
- {
- avalue[i] = (void *) *pst;
- pst++;
- }
- break;
-
- case FFI_TYPE_SINT64:
- case FFI_TYPE_UINT64:
- /* passing long long ints are complex, they must
- * be passed in suitable register pairs such as
- * (r3,r4) or (r5,r6) or (r6,r7), or (r7,r8) or (r9,r10)
- * and if the entire pair aren't available then the outgoing
- * parameter stack is used for both but an alignment of 8
- * must will be kept. So we must either look in pgr
- * or pst to find the correct address for this type
- * of parameter.
- */
- if (ng < 7)
- {
- if (ng & 0x01)
- {
- /* skip r4, r6, r8 as starting points */
- ng++;
- pgr++;
- }
- avalue[i] = pgr;
- ng += 2;
- pgr += 2;
- }
- else
- {
- if (((long) pst) & 4)
- pst++;
- avalue[i] = pst;
- pst += 2;
- ng = 8;
- }
- break;
-
- default:
- FFI_ASSERT (0);
- }
-
- i++;
- }
-
-
- (closure->fun) (cif, rvalue, avalue, closure->user_data);
-
- /* Tell ffi_closure_SYSV how to perform return type promotions.
- Because the FFI_SYSV ABI returns the structures <= 8 bytes in r3/r4
- we have to tell ffi_closure_SYSV how to treat them. We combine the base
- type FFI_SYSV_TYPE_SMALL_STRUCT - 1 with the size of the struct.
- So a one byte struct gets the return type 16. Return type 1 to 15 are
- already used and we never have a struct with size zero. That is the reason
- for the subtraction of 1. See the comment in ffitarget.h about ordering.
- */
- if (cif->abi == FFI_SYSV && rtypenum == FFI_TYPE_STRUCT && size <= 8)
- return (FFI_SYSV_TYPE_SMALL_STRUCT - 1) + size;
- return rtypenum;
-}
-
-int FFI_HIDDEN ffi_closure_helper_LINUX64 (ffi_closure *, void *,
- unsigned long *, ffi_dblfl *);
-
-int FFI_HIDDEN
-ffi_closure_helper_LINUX64 (ffi_closure *closure, void *rvalue,
- unsigned long *pst, ffi_dblfl *pfr)
-{
- /* rvalue is the pointer to space for return value in closure assembly */
- /* pst is the pointer to parameter save area
- (r3-r10 are stored into its first 8 slots by ffi_closure_LINUX64) */
- /* pfr is the pointer to where f1-f13 are stored in ffi_closure_LINUX64 */
-
- void **avalue;
- ffi_type **arg_types;
- unsigned long i, avn, nfixedargs;
- ffi_cif *cif;
- ffi_dblfl *end_pfr = pfr + NUM_FPR_ARG_REGISTERS64;
-#ifdef __STRUCT_PARM_ALIGN__
- unsigned long align;
-#endif
-
- cif = closure->cif;
- avalue = alloca (cif->nargs * sizeof (void *));
-
- /* Copy the caller's structure return value address so that the
- closure returns the data directly to the caller. */
- if (cif->rtype->type == FFI_TYPE_STRUCT
- && (cif->flags & FLAG_RETURNS_SMST) == 0)
- {
- rvalue = (void *) *pst;
- pst++;
- }
-
- i = 0;
- avn = cif->nargs;
- nfixedargs = cif->nfixedargs;
- arg_types = cif->arg_types;
-
- /* Grab the addresses of the arguments from the stack frame. */
- while (i < avn)
- {
- unsigned int elt, elnum;
-
- switch (arg_types[i]->type)
- {
- case FFI_TYPE_SINT8:
- case FFI_TYPE_UINT8:
-#ifndef __LITTLE_ENDIAN__
- avalue[i] = (char *) pst + 7;
- pst++;
- break;
-#endif
-
- case FFI_TYPE_SINT16:
- case FFI_TYPE_UINT16:
-#ifndef __LITTLE_ENDIAN__
- avalue[i] = (char *) pst + 6;
- pst++;
- break;
-#endif
-
- case FFI_TYPE_SINT32:
- case FFI_TYPE_UINT32:
-#ifndef __LITTLE_ENDIAN__
- avalue[i] = (char *) pst + 4;
- pst++;
- break;
-#endif
-
- case FFI_TYPE_SINT64:
- case FFI_TYPE_UINT64:
- case FFI_TYPE_POINTER:
- avalue[i] = pst;
- pst++;
- break;
-
- case FFI_TYPE_STRUCT:
-#ifdef __STRUCT_PARM_ALIGN__
- align = arg_types[i]->alignment;
- if (align > __STRUCT_PARM_ALIGN__)
- align = __STRUCT_PARM_ALIGN__;
- if (align > 1)
- pst = (unsigned long *) ALIGN ((size_t) pst, align);
-#endif
- elt = 0;
-#if _CALL_ELF == 2
- elt = discover_homogeneous_aggregate (arg_types[i], &elnum);
-#endif
- if (elt)
- {
- union {
- void *v;
- unsigned long *ul;
- float *f;
- double *d;
- size_t p;
- } to, from;
-
- /* Repackage the aggregate from its parts. The
- aggregate size is not greater than the space taken by
- the registers so store back to the register/parameter
- save arrays. */
- if (pfr + elnum <= end_pfr)
- to.v = pfr;
- else
- to.v = pst;
-
- avalue[i] = to.v;
- from.ul = pst;
- if (elt == FFI_TYPE_FLOAT)
- {
- do
- {
- if (pfr < end_pfr && i < nfixedargs)
- {
- *to.f = (float) pfr->d;
- pfr++;
- }
- else
- *to.f = *from.f;
- to.f++;
- from.f++;
- }
- while (--elnum != 0);
- }
- else
- {
- do
- {
- if (pfr < end_pfr && i < nfixedargs)
- {
- *to.d = pfr->d;
- pfr++;
- }
- else
- *to.d = *from.d;
- to.d++;
- from.d++;
- }
- while (--elnum != 0);
- }
- }
- else
- {
-#ifndef __LITTLE_ENDIAN__
- /* Structures with size less than eight bytes are passed
- left-padded. */
- if (arg_types[i]->size < 8)
- avalue[i] = (char *) pst + 8 - arg_types[i]->size;
- else
-#endif
- avalue[i] = pst;
- }
- pst += (arg_types[i]->size + 7) / 8;
- break;
-
- case FFI_TYPE_FLOAT:
- /* unfortunately float values are stored as doubles
- * in the ffi_closure_LINUX64 code (since we don't check
- * the type in that routine).
- */
-
- /* there are 13 64bit floating point registers */
-
- if (pfr < end_pfr && i < nfixedargs)
- {
- double temp = pfr->d;
- pfr->f = (float) temp;
- avalue[i] = pfr;
- pfr++;
- }
- else
- avalue[i] = pst;
- pst++;
- break;
-
- case FFI_TYPE_DOUBLE:
- /* On the outgoing stack all values are aligned to 8 */
- /* there are 13 64bit floating point registers */
-
- if (pfr < end_pfr && i < nfixedargs)
- {
- avalue[i] = pfr;
- pfr++;
- }
- else
- avalue[i] = pst;
- pst++;
- break;
-
-#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
- case FFI_TYPE_LONGDOUBLE:
- if (pfr + 1 < end_pfr && i + 1 < nfixedargs)
- {
- avalue[i] = pfr;
- pfr += 2;
- }
- else
- {
- if (pfr < end_pfr && i < nfixedargs)
- {
- /* Passed partly in f13 and partly on the stack.
- Move it all to the stack. */
- *pst = *(unsigned long *) pfr;
- pfr++;
- }
- avalue[i] = pst;
- }
- pst += 2;
- break;
-#endif
-
- default:
- FFI_ASSERT (0);
- }
-
- i++;
- }
-
-
- (closure->fun) (cif, rvalue, avalue, closure->user_data);
-
- /* Tell ffi_closure_LINUX64 how to perform return type promotions. */
- if ((cif->flags & FLAG_RETURNS_SMST) != 0)
- {
- if ((cif->flags & FLAG_RETURNS_FP) == 0)
- return FFI_V2_TYPE_SMALL_STRUCT + cif->rtype->size - 1;
- else if ((cif->flags & FLAG_RETURNS_64BITS) != 0)
- return FFI_V2_TYPE_DOUBLE_HOMOG;
- else
- return FFI_V2_TYPE_FLOAT_HOMOG;
- }
- return cif->rtype->type;
}
diff --git a/src/powerpc/ffi_linux64.c b/src/powerpc/ffi_linux64.c
new file mode 100644
index 0000000..5add018
--- /dev/null
+++ b/src/powerpc/ffi_linux64.c
@@ -0,0 +1,884 @@
+/* -----------------------------------------------------------------------
+ ffi.c - Copyright (C) 2013 IBM
+ Copyright (C) 2011 Anthony Green
+ Copyright (C) 2011 Kyle Moffett
+ Copyright (C) 2008 Red Hat, Inc
+ Copyright (C) 2007, 2008 Free Software Foundation, Inc
+ Copyright (c) 1998 Geoffrey Keating
+
+ PowerPC Foreign Function Interface
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+#include "ffi.h"
+
+#ifdef POWERPC64
+#include "ffi_common.h"
+#include "ffi_powerpc.h"
+
+
+/* About the LINUX64 ABI. */
+enum {
+ NUM_GPR_ARG_REGISTERS64 = 8,
+ NUM_FPR_ARG_REGISTERS64 = 13
+};
+enum { ASM_NEEDS_REGISTERS64 = 4 };
+
+
+#if HAVE_LONG_DOUBLE_VARIANT && FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+/* Adjust size of ffi_type_longdouble. */
+void FFI_HIDDEN
+ffi_prep_types_linux64 (ffi_abi abi)
+{
+ if ((abi & FFI_LINUX_LONG_DOUBLE_128) == 0)
+ {
+ ffi_type_longdouble.size = 8;
+ ffi_type_longdouble.alignment = 8;
+ }
+ else
+ {
+ ffi_type_longdouble.size = 16;
+ ffi_type_longdouble.alignment = 16;
+ }
+}
+#endif
+
+
+#if _CALL_ELF == 2
+static unsigned int
+discover_homogeneous_aggregate (const ffi_type *t, unsigned int *elnum)
+{
+ switch (t->type)
+ {
+ case FFI_TYPE_FLOAT:
+ case FFI_TYPE_DOUBLE:
+ *elnum = 1;
+ return (int) t->type;
+
+ case FFI_TYPE_STRUCT:;
+ {
+ unsigned int base_elt = 0, total_elnum = 0;
+ ffi_type **el = t->elements;
+ while (*el)
+ {
+ unsigned int el_elt, el_elnum = 0;
+ el_elt = discover_homogeneous_aggregate (*el, &el_elnum);
+ if (el_elt == 0
+ || (base_elt && base_elt != el_elt))
+ return 0;
+ base_elt = el_elt;
+ total_elnum += el_elnum;
+ if (total_elnum > 8)
+ return 0;
+ el++;
+ }
+ *elnum = total_elnum;
+ return base_elt;
+ }
+
+ default:
+ return 0;
+ }
+}
+#endif
+
+
+/* Perform machine dependent cif processing */
+static ffi_status
+ffi_prep_cif_linux64_core (ffi_cif *cif)
+{
+ ffi_type **ptr;
+ unsigned bytes;
+ unsigned i, fparg_count = 0, intarg_count = 0;
+ unsigned flags = cif->flags;
+#if _CALL_ELF == 2
+ unsigned int elt, elnum;
+#endif
+
+#if FFI_TYPE_LONGDOUBLE == FFI_TYPE_DOUBLE
+ /* If compiled without long double support.. */
+ if ((cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
+ return FFI_BAD_ABI;
+#endif
+
+ /* The machine-independent calculation of cif->bytes doesn't work
+ for us. Redo the calculation. */
+#if _CALL_ELF == 2
+ /* Space for backchain, CR, LR, TOC and the asm's temp regs. */
+ bytes = (4 + ASM_NEEDS_REGISTERS64) * sizeof (long);
+
+ /* Space for the general registers. */
+ bytes += NUM_GPR_ARG_REGISTERS64 * sizeof (long);
+#else
+ /* Space for backchain, CR, LR, cc/ld doubleword, TOC and the asm's temp
+ regs. */
+ bytes = (6 + ASM_NEEDS_REGISTERS64) * sizeof (long);
+
+ /* Space for the mandatory parm save area and general registers. */
+ bytes += 2 * NUM_GPR_ARG_REGISTERS64 * sizeof (long);
+#endif
+
+ /* Return value handling. */
+ switch (cif->rtype->type)
+ {
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ case FFI_TYPE_LONGDOUBLE:
+ if ((cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
+ flags |= FLAG_RETURNS_128BITS;
+ /* Fall through. */
+#endif
+ case FFI_TYPE_DOUBLE:
+ flags |= FLAG_RETURNS_64BITS;
+ /* Fall through. */
+ case FFI_TYPE_FLOAT:
+ flags |= FLAG_RETURNS_FP;
+ break;
+
+ case FFI_TYPE_UINT128:
+ flags |= FLAG_RETURNS_128BITS;
+ /* Fall through. */
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ flags |= FLAG_RETURNS_64BITS;
+ break;
+
+ case FFI_TYPE_STRUCT:
+#if _CALL_ELF == 2
+ elt = discover_homogeneous_aggregate (cif->rtype, &elnum);
+ if (elt)
+ {
+ if (elt == FFI_TYPE_DOUBLE)
+ flags |= FLAG_RETURNS_64BITS;
+ flags |= FLAG_RETURNS_FP | FLAG_RETURNS_SMST;
+ break;
+ }
+ if (cif->rtype->size <= 16)
+ {
+ flags |= FLAG_RETURNS_SMST;
+ break;
+ }
+#endif
+ intarg_count++;
+ flags |= FLAG_RETVAL_REFERENCE;
+ /* Fall through. */
+ case FFI_TYPE_VOID:
+ flags |= FLAG_RETURNS_NOTHING;
+ break;
+
+ default:
+ /* Returns 32-bit integer, or similar. Nothing to do here. */
+ break;
+ }
+
+ for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
+ {
+ unsigned int align;
+
+ switch ((*ptr)->type)
+ {
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ case FFI_TYPE_LONGDOUBLE:
+ if ((cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
+ {
+ fparg_count++;
+ intarg_count++;
+ }
+ /* Fall through. */
+#endif
+ case FFI_TYPE_DOUBLE:
+ case FFI_TYPE_FLOAT:
+ fparg_count++;
+ intarg_count++;
+ if (fparg_count > NUM_FPR_ARG_REGISTERS64)
+ flags |= FLAG_ARG_NEEDS_PSAVE;
+ break;
+
+ case FFI_TYPE_STRUCT:
+ if ((cif->abi & FFI_LINUX_STRUCT_ALIGN) != 0)
+ {
+ align = (*ptr)->alignment;
+ if (align > 16)
+ align = 16;
+ align = align / 8;
+ if (align > 1)
+ intarg_count = ALIGN (intarg_count, align);
+ }
+ intarg_count += ((*ptr)->size + 7) / 8;
+#if _CALL_ELF == 2
+ elt = discover_homogeneous_aggregate (*ptr, &elnum);
+ if (elt)
+ {
+ fparg_count += elnum;
+ if (fparg_count > NUM_FPR_ARG_REGISTERS64)
+ flags |= FLAG_ARG_NEEDS_PSAVE;
+ }
+ else
+#endif
+ {
+ if (intarg_count > NUM_GPR_ARG_REGISTERS64)
+ flags |= FLAG_ARG_NEEDS_PSAVE;
+ }
+ break;
+
+ case FFI_TYPE_POINTER:
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ case FFI_TYPE_INT:
+ case FFI_TYPE_UINT32:
+ case FFI_TYPE_SINT32:
+ case FFI_TYPE_UINT16:
+ case FFI_TYPE_SINT16:
+ case FFI_TYPE_UINT8:
+ case FFI_TYPE_SINT8:
+ /* Everything else is passed as a 8-byte word in a GPR, either
+ the object itself or a pointer to it. */
+ intarg_count++;
+ if (intarg_count > NUM_GPR_ARG_REGISTERS64)
+ flags |= FLAG_ARG_NEEDS_PSAVE;
+ break;
+ default:
+ FFI_ASSERT (0);
+ }
+ }
+
+ if (fparg_count != 0)
+ flags |= FLAG_FP_ARGUMENTS;
+ if (intarg_count > 4)
+ flags |= FLAG_4_GPR_ARGUMENTS;
+
+ /* Space for the FPR registers, if needed. */
+ if (fparg_count != 0)
+ bytes += NUM_FPR_ARG_REGISTERS64 * sizeof (double);
+
+ /* Stack space. */
+#if _CALL_ELF == 2
+ if ((flags & FLAG_ARG_NEEDS_PSAVE) != 0)
+ bytes += intarg_count * sizeof (long);
+#else
+ if (intarg_count > NUM_GPR_ARG_REGISTERS64)
+ bytes += (intarg_count - NUM_GPR_ARG_REGISTERS64) * sizeof (long);
+#endif
+
+ /* The stack space allocated needs to be a multiple of 16 bytes. */
+ bytes = (bytes + 15) & ~0xF;
+
+ cif->flags = flags;
+ cif->bytes = bytes;
+
+ return FFI_OK;
+}
+
+ffi_status FFI_HIDDEN
+ffi_prep_cif_linux64 (ffi_cif *cif)
+{
+ cif->nfixedargs = cif->nargs;
+ return ffi_prep_cif_linux64_core (cif);
+}
+
+ffi_status FFI_HIDDEN
+ffi_prep_cif_linux64_var (ffi_cif *cif,
+ unsigned int nfixedargs,
+ unsigned int ntotalargs MAYBE_UNUSED)
+{
+ cif->nfixedargs = nfixedargs;
+#if _CALL_ELF == 2
+ cif->flags |= FLAG_ARG_NEEDS_PSAVE;
+#endif
+ return ffi_prep_cif_linux64_core (cif);
+}
+
+
+/* ffi_prep_args64 is called by the assembly routine once stack space
+ has been allocated for the function's arguments.
+
+ The stack layout we want looks like this:
+
+ | Ret addr from ffi_call_LINUX64 8bytes | higher addresses
+ |--------------------------------------------|
+ | CR save area 8bytes |
+ |--------------------------------------------|
+ | Previous backchain pointer 8 | stack pointer here
+ |--------------------------------------------|<+ <<< on entry to
+ | Saved r28-r31 4*8 | | ffi_call_LINUX64
+ |--------------------------------------------| |
+ | GPR registers r3-r10 8*8 | |
+ |--------------------------------------------| |
+ | FPR registers f1-f13 (optional) 13*8 | |
+ |--------------------------------------------| |
+ | Parameter save area | |
+ |--------------------------------------------| |
+ | TOC save area 8 | |
+ |--------------------------------------------| | stack |
+ | Linker doubleword 8 | | grows |
+ |--------------------------------------------| | down V
+ | Compiler doubleword 8 | |
+ |--------------------------------------------| | lower addresses
+ | Space for callee's LR 8 | |
+ |--------------------------------------------| |
+ | CR save area 8 | |
+ |--------------------------------------------| | stack pointer here
+ | Current backchain pointer 8 |-/ during
+ |--------------------------------------------| <<< ffi_call_LINUX64
+
+*/
+
+void FFI_HIDDEN
+ffi_prep_args64 (extended_cif *ecif, unsigned long *const stack)
+{
+ const unsigned long bytes = ecif->cif->bytes;
+ const unsigned long flags = ecif->cif->flags;
+
+ typedef union
+ {
+ char *c;
+ unsigned long *ul;
+ float *f;
+ double *d;
+ size_t p;
+ } valp;
+
+ /* 'stacktop' points at the previous backchain pointer. */
+ valp stacktop;
+
+ /* 'next_arg' points at the space for gpr3, and grows upwards as
+ we use GPR registers, then continues at rest. */
+ valp gpr_base;
+ valp gpr_end;
+ valp rest;
+ valp next_arg;
+
+ /* 'fpr_base' points at the space for fpr3, and grows upwards as
+ we use FPR registers. */
+ valp fpr_base;
+ unsigned int fparg_count;
+
+ unsigned int i, words, nargs, nfixedargs;
+ ffi_type **ptr;
+ double double_tmp;
+ union
+ {
+ void **v;
+ char **c;
+ signed char **sc;
+ unsigned char **uc;
+ signed short **ss;
+ unsigned short **us;
+ signed int **si;
+ unsigned int **ui;
+ unsigned long **ul;
+ float **f;
+ double **d;
+ } p_argv;
+ unsigned long gprvalue;
+ unsigned long align;
+
+ stacktop.c = (char *) stack + bytes;
+ gpr_base.ul = stacktop.ul - ASM_NEEDS_REGISTERS64 - NUM_GPR_ARG_REGISTERS64;
+ gpr_end.ul = gpr_base.ul + NUM_GPR_ARG_REGISTERS64;
+#if _CALL_ELF == 2
+ rest.ul = stack + 4 + NUM_GPR_ARG_REGISTERS64;
+#else
+ rest.ul = stack + 6 + NUM_GPR_ARG_REGISTERS64;
+#endif
+ fpr_base.d = gpr_base.d - NUM_FPR_ARG_REGISTERS64;
+ fparg_count = 0;
+ next_arg.ul = gpr_base.ul;
+
+ /* Check that everything starts aligned properly. */
+ FFI_ASSERT (((unsigned long) (char *) stack & 0xF) == 0);
+ FFI_ASSERT (((unsigned long) stacktop.c & 0xF) == 0);
+ FFI_ASSERT ((bytes & 0xF) == 0);
+
+ /* Deal with return values that are actually pass-by-reference. */
+ if (flags & FLAG_RETVAL_REFERENCE)
+ *next_arg.ul++ = (unsigned long) (char *) ecif->rvalue;
+
+ /* Now for the arguments. */
+ p_argv.v = ecif->avalue;
+ nargs = ecif->cif->nargs;
+ nfixedargs = ecif->cif->nfixedargs;
+ for (ptr = ecif->cif->arg_types, i = 0;
+ i < nargs;
+ i++, ptr++, p_argv.v++)
+ {
+#if _CALL_ELF == 2
+ unsigned int elt, elnum;
+#endif
+
+ switch ((*ptr)->type)
+ {
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ case FFI_TYPE_LONGDOUBLE:
+ if ((ecif->cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
+ {
+ double_tmp = (*p_argv.d)[0];
+ if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
+ *fpr_base.d++ = double_tmp;
+ else
+ *next_arg.d = double_tmp;
+ if (++next_arg.ul == gpr_end.ul)
+ next_arg.ul = rest.ul;
+ fparg_count++;
+ double_tmp = (*p_argv.d)[1];
+ if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
+ *fpr_base.d++ = double_tmp;
+ else
+ *next_arg.d = double_tmp;
+ if (++next_arg.ul == gpr_end.ul)
+ next_arg.ul = rest.ul;
+ fparg_count++;
+ FFI_ASSERT (__LDBL_MANT_DIG__ == 106);
+ FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
+ break;
+ }
+ /* Fall through. */
+#endif
+ case FFI_TYPE_DOUBLE:
+ double_tmp = **p_argv.d;
+ if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
+ *fpr_base.d++ = double_tmp;
+ else
+ *next_arg.d = double_tmp;
+ if (++next_arg.ul == gpr_end.ul)
+ next_arg.ul = rest.ul;
+ fparg_count++;
+ FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
+ break;
+
+ case FFI_TYPE_FLOAT:
+ double_tmp = **p_argv.f;
+ if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
+ *fpr_base.d++ = double_tmp;
+ else
+ *next_arg.f = (float) double_tmp;
+ if (++next_arg.ul == gpr_end.ul)
+ next_arg.ul = rest.ul;
+ fparg_count++;
+ FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
+ break;
+
+ case FFI_TYPE_STRUCT:
+ if ((ecif->cif->abi & FFI_LINUX_STRUCT_ALIGN) != 0)
+ {
+ align = (*ptr)->alignment;
+ if (align > 16)
+ align = 16;
+ if (align > 1)
+ next_arg.p = ALIGN (next_arg.p, align);
+ }
+#if _CALL_ELF == 2
+ elt = discover_homogeneous_aggregate (*ptr, &elnum);
+ if (elt)
+ {
+ union {
+ void *v;
+ float *f;
+ double *d;
+ } arg;
+
+ arg.v = *p_argv.v;
+ if (elt == FFI_TYPE_FLOAT)
+ {
+ do
+ {
+ double_tmp = *arg.f++;
+ if (fparg_count < NUM_FPR_ARG_REGISTERS64
+ && i < nfixedargs)
+ *fpr_base.d++ = double_tmp;
+ else
+ *next_arg.f = (float) double_tmp;
+ if (++next_arg.f == gpr_end.f)
+ next_arg.f = rest.f;
+ fparg_count++;
+ }
+ while (--elnum != 0);
+ if ((next_arg.p & 3) != 0)
+ {
+ if (++next_arg.f == gpr_end.f)
+ next_arg.f = rest.f;
+ }
+ }
+ else
+ do
+ {
+ double_tmp = *arg.d++;
+ if (fparg_count < NUM_FPR_ARG_REGISTERS64 && i < nfixedargs)
+ *fpr_base.d++ = double_tmp;
+ else
+ *next_arg.d = double_tmp;
+ if (++next_arg.d == gpr_end.d)
+ next_arg.d = rest.d;
+ fparg_count++;
+ }
+ while (--elnum != 0);
+ }
+ else
+#endif
+ {
+ words = ((*ptr)->size + 7) / 8;
+ if (next_arg.ul >= gpr_base.ul && next_arg.ul + words > gpr_end.ul)
+ {
+ size_t first = gpr_end.c - next_arg.c;
+ memcpy (next_arg.c, *p_argv.c, first);
+ memcpy (rest.c, *p_argv.c + first, (*ptr)->size - first);
+ next_arg.c = rest.c + words * 8 - first;
+ }
+ else
+ {
+ char *where = next_arg.c;
+
+#ifndef __LITTLE_ENDIAN__
+ /* Structures with size less than eight bytes are passed
+ left-padded. */
+ if ((*ptr)->size < 8)
+ where += 8 - (*ptr)->size;
+#endif
+ memcpy (where, *p_argv.c, (*ptr)->size);
+ next_arg.ul += words;
+ if (next_arg.ul == gpr_end.ul)
+ next_arg.ul = rest.ul;
+ }
+ }
+ break;
+
+ case FFI_TYPE_UINT8:
+ gprvalue = **p_argv.uc;
+ goto putgpr;
+ case FFI_TYPE_SINT8:
+ gprvalue = **p_argv.sc;
+ goto putgpr;
+ case FFI_TYPE_UINT16:
+ gprvalue = **p_argv.us;
+ goto putgpr;
+ case FFI_TYPE_SINT16:
+ gprvalue = **p_argv.ss;
+ goto putgpr;
+ case FFI_TYPE_UINT32:
+ gprvalue = **p_argv.ui;
+ goto putgpr;
+ case FFI_TYPE_INT:
+ case FFI_TYPE_SINT32:
+ gprvalue = **p_argv.si;
+ goto putgpr;
+
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ case FFI_TYPE_POINTER:
+ gprvalue = **p_argv.ul;
+ putgpr:
+ *next_arg.ul++ = gprvalue;
+ if (next_arg.ul == gpr_end.ul)
+ next_arg.ul = rest.ul;
+ break;
+ }
+ }
+
+ FFI_ASSERT (flags & FLAG_4_GPR_ARGUMENTS
+ || (next_arg.ul >= gpr_base.ul
+ && next_arg.ul <= gpr_base.ul + 4));
+}
+
+
+#if _CALL_ELF == 2
+#define MIN_CACHE_LINE_SIZE 8
+
+static void
+flush_icache (char *wraddr, char *xaddr, int size)
+{
+ int i;
+ for (i = 0; i < size; i += MIN_CACHE_LINE_SIZE)
+ __asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;"
+ : : "r" (xaddr + i), "r" (wraddr + i) : "memory");
+ __asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;" "sync;" "isync;"
+ : : "r"(xaddr + size - 1), "r"(wraddr + size - 1)
+ : "memory");
+}
+#endif
+
+ffi_status
+ffi_prep_closure_loc_linux64 (ffi_closure *closure,
+ ffi_cif *cif,
+ void (*fun) (ffi_cif *, void *, void **, void *),
+ void *user_data,
+ void *codeloc)
+{
+#if _CALL_ELF == 2
+ unsigned int *tramp = (unsigned int *) &closure->tramp[0];
+
+ if (cif->abi < FFI_LINUX || cif->abi >= FFI_LAST_ABI)
+ return FFI_BAD_ABI;
+
+ tramp[0] = 0xe96c0018; /* 0: ld 11,2f-0b(12) */
+ tramp[1] = 0xe98c0010; /* ld 12,1f-0b(12) */
+ tramp[2] = 0x7d8903a6; /* mtctr 12 */
+ tramp[3] = 0x4e800420; /* bctr */
+ /* 1: .quad function_addr */
+ /* 2: .quad context */
+ *(void **) &tramp[4] = (void *) ffi_closure_LINUX64;
+ *(void **) &tramp[6] = codeloc;
+ flush_icache ((char *)tramp, (char *)codeloc, FFI_TRAMPOLINE_SIZE);
+#else
+ void **tramp = (void **) &closure->tramp[0];
+
+ if (cif->abi < FFI_LINUX || cif->abi >= FFI_LAST_ABI)
+ return FFI_BAD_ABI;
+
+ /* Copy function address and TOC from ffi_closure_LINUX64. */
+ memcpy (tramp, (char *) ffi_closure_LINUX64, 16);
+ tramp[2] = codeloc;
+#endif
+
+ closure->cif = cif;
+ closure->fun = fun;
+ closure->user_data = user_data;
+
+ return FFI_OK;
+}
+
+
+int FFI_HIDDEN
+ffi_closure_helper_LINUX64 (ffi_closure *closure, void *rvalue,
+ unsigned long *pst, ffi_dblfl *pfr)
+{
+ /* rvalue is the pointer to space for return value in closure assembly */
+ /* pst is the pointer to parameter save area
+ (r3-r10 are stored into its first 8 slots by ffi_closure_LINUX64) */
+ /* pfr is the pointer to where f1-f13 are stored in ffi_closure_LINUX64 */
+
+ void **avalue;
+ ffi_type **arg_types;
+ unsigned long i, avn, nfixedargs;
+ ffi_cif *cif;
+ ffi_dblfl *end_pfr = pfr + NUM_FPR_ARG_REGISTERS64;
+ unsigned long align;
+
+ cif = closure->cif;
+ avalue = alloca (cif->nargs * sizeof (void *));
+
+ /* Copy the caller's structure return value address so that the
+ closure returns the data directly to the caller. */
+ if (cif->rtype->type == FFI_TYPE_STRUCT
+ && (cif->flags & FLAG_RETURNS_SMST) == 0)
+ {
+ rvalue = (void *) *pst;
+ pst++;
+ }
+
+ i = 0;
+ avn = cif->nargs;
+ nfixedargs = cif->nfixedargs;
+ arg_types = cif->arg_types;
+
+ /* Grab the addresses of the arguments from the stack frame. */
+ while (i < avn)
+ {
+ unsigned int elt, elnum;
+
+ switch (arg_types[i]->type)
+ {
+ case FFI_TYPE_SINT8:
+ case FFI_TYPE_UINT8:
+#ifndef __LITTLE_ENDIAN__
+ avalue[i] = (char *) pst + 7;
+ pst++;
+ break;
+#endif
+
+ case FFI_TYPE_SINT16:
+ case FFI_TYPE_UINT16:
+#ifndef __LITTLE_ENDIAN__
+ avalue[i] = (char *) pst + 6;
+ pst++;
+ break;
+#endif
+
+ case FFI_TYPE_SINT32:
+ case FFI_TYPE_UINT32:
+#ifndef __LITTLE_ENDIAN__
+ avalue[i] = (char *) pst + 4;
+ pst++;
+ break;
+#endif
+
+ case FFI_TYPE_SINT64:
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_POINTER:
+ avalue[i] = pst;
+ pst++;
+ break;
+
+ case FFI_TYPE_STRUCT:
+ if ((cif->abi & FFI_LINUX_STRUCT_ALIGN) != 0)
+ {
+ align = arg_types[i]->alignment;
+ if (align > 16)
+ align = 16;
+ if (align > 1)
+ pst = (unsigned long *) ALIGN ((size_t) pst, align);
+ }
+ elt = 0;
+#if _CALL_ELF == 2
+ elt = discover_homogeneous_aggregate (arg_types[i], &elnum);
+#endif
+ if (elt)
+ {
+ union {
+ void *v;
+ unsigned long *ul;
+ float *f;
+ double *d;
+ size_t p;
+ } to, from;
+
+ /* Repackage the aggregate from its parts. The
+ aggregate size is not greater than the space taken by
+ the registers so store back to the register/parameter
+ save arrays. */
+ if (pfr + elnum <= end_pfr)
+ to.v = pfr;
+ else
+ to.v = pst;
+
+ avalue[i] = to.v;
+ from.ul = pst;
+ if (elt == FFI_TYPE_FLOAT)
+ {
+ do
+ {
+ if (pfr < end_pfr && i < nfixedargs)
+ {
+ *to.f = (float) pfr->d;
+ pfr++;
+ }
+ else
+ *to.f = *from.f;
+ to.f++;
+ from.f++;
+ }
+ while (--elnum != 0);
+ }
+ else
+ {
+ do
+ {
+ if (pfr < end_pfr && i < nfixedargs)
+ {
+ *to.d = pfr->d;
+ pfr++;
+ }
+ else
+ *to.d = *from.d;
+ to.d++;
+ from.d++;
+ }
+ while (--elnum != 0);
+ }
+ }
+ else
+ {
+#ifndef __LITTLE_ENDIAN__
+ /* Structures with size less than eight bytes are passed
+ left-padded. */
+ if (arg_types[i]->size < 8)
+ avalue[i] = (char *) pst + 8 - arg_types[i]->size;
+ else
+#endif
+ avalue[i] = pst;
+ }
+ pst += (arg_types[i]->size + 7) / 8;
+ break;
+
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ case FFI_TYPE_LONGDOUBLE:
+ if ((cif->abi & FFI_LINUX_LONG_DOUBLE_128) != 0)
+ {
+ if (pfr + 1 < end_pfr && i + 1 < nfixedargs)
+ {
+ avalue[i] = pfr;
+ pfr += 2;
+ }
+ else
+ {
+ if (pfr < end_pfr && i < nfixedargs)
+ {
+ /* Passed partly in f13 and partly on the stack.
+ Move it all to the stack. */
+ *pst = *(unsigned long *) pfr;
+ pfr++;
+ }
+ avalue[i] = pst;
+ }
+ pst += 2;
+ break;
+ }
+ /* Fall through. */
+#endif
+ case FFI_TYPE_DOUBLE:
+ /* On the outgoing stack all values are aligned to 8 */
+ /* there are 13 64bit floating point registers */
+
+ if (pfr < end_pfr && i < nfixedargs)
+ {
+ avalue[i] = pfr;
+ pfr++;
+ }
+ else
+ avalue[i] = pst;
+ pst++;
+ break;
+
+ case FFI_TYPE_FLOAT:
+ if (pfr < end_pfr && i < nfixedargs)
+ {
+ /* Float values are stored as doubles in the
+ ffi_closure_LINUX64 code. Fix them here. */
+ pfr->f = (float) pfr->d;
+ avalue[i] = pfr;
+ pfr++;
+ }
+ else
+ avalue[i] = pst;
+ pst++;
+ break;
+
+ default:
+ FFI_ASSERT (0);
+ }
+
+ i++;
+ }
+
+
+ (closure->fun) (cif, rvalue, avalue, closure->user_data);
+
+ /* Tell ffi_closure_LINUX64 how to perform return type promotions. */
+ if ((cif->flags & FLAG_RETURNS_SMST) != 0)
+ {
+ if ((cif->flags & FLAG_RETURNS_FP) == 0)
+ return FFI_V2_TYPE_SMALL_STRUCT + cif->rtype->size - 1;
+ else if ((cif->flags & FLAG_RETURNS_64BITS) != 0)
+ return FFI_V2_TYPE_DOUBLE_HOMOG;
+ else
+ return FFI_V2_TYPE_FLOAT_HOMOG;
+ }
+ return cif->rtype->type;
+}
+#endif
diff --git a/src/powerpc/ffi_powerpc.h b/src/powerpc/ffi_powerpc.h
new file mode 100644
index 0000000..f7fc737
--- /dev/null
+++ b/src/powerpc/ffi_powerpc.h
@@ -0,0 +1,44 @@
+enum {
+ /* The assembly depends on these exact flags. */
+ FLAG_RETURNS_SMST = 1 << (31-31), /* Used for FFI_SYSV small structs. */
+ FLAG_RETURNS_NOTHING = 1 << (31-30), /* These go in cr7 */
+ FLAG_RETURNS_FP = 1 << (31-29),
+ FLAG_RETURNS_64BITS = 1 << (31-28),
+
+ FLAG_RETURNS_128BITS = 1 << (31-27), /* cr6 */
+
+ FLAG_ARG_NEEDS_COPY = 1 << (31- 7), /* Used by sysv code */
+ FLAG_ARG_NEEDS_PSAVE = FLAG_ARG_NEEDS_COPY, /* Used by linux64 code */
+ FLAG_FP_ARGUMENTS = 1 << (31- 6), /* cr1.eq; specified by ABI */
+ FLAG_4_GPR_ARGUMENTS = 1 << (31- 5),
+ FLAG_RETVAL_REFERENCE = 1 << (31- 4)
+};
+
+typedef union
+{
+ float f;
+ double d;
+} ffi_dblfl;
+
+void FFI_HIDDEN ffi_closure_SYSV (void);
+void FFI_HIDDEN ffi_call_SYSV(extended_cif *, unsigned, unsigned, unsigned *,
+ void (*)(void));
+
+void FFI_HIDDEN ffi_prep_types_sysv (ffi_abi);
+ffi_status FFI_HIDDEN ffi_prep_cif_sysv (ffi_cif *);
+ffi_status FFI_HIDDEN ffi_prep_cif_sysv_var (ffi_cif *, unsigned int,
+ unsigned int);
+int FFI_HIDDEN ffi_closure_helper_SYSV (ffi_closure *, void *, unsigned long *,
+ ffi_dblfl *, unsigned long *);
+
+void FFI_HIDDEN ffi_call_LINUX64(extended_cif *, unsigned long, unsigned long,
+ unsigned long *, void (*)(void));
+void FFI_HIDDEN ffi_closure_LINUX64 (void);
+
+void FFI_HIDDEN ffi_prep_types_linux64 (ffi_abi);
+ffi_status FFI_HIDDEN ffi_prep_cif_linux64 (ffi_cif *);
+ffi_status FFI_HIDDEN ffi_prep_cif_linux64_var (ffi_cif *, unsigned int,
+ unsigned int);
+void FFI_HIDDEN ffi_prep_args64 (extended_cif *, unsigned long *const);
+int FFI_HIDDEN ffi_closure_helper_LINUX64 (ffi_closure *, void *,
+ unsigned long *, ffi_dblfl *);
diff --git a/src/powerpc/ffi_sysv.c b/src/powerpc/ffi_sysv.c
new file mode 100644
index 0000000..f2082de
--- /dev/null
+++ b/src/powerpc/ffi_sysv.c
@@ -0,0 +1,946 @@
+/* -----------------------------------------------------------------------
+ ffi.c - Copyright (C) 2013 IBM
+ Copyright (C) 2011 Anthony Green
+ Copyright (C) 2011 Kyle Moffett
+ Copyright (C) 2008 Red Hat, Inc
+ Copyright (C) 2007, 2008 Free Software Foundation, Inc
+ Copyright (c) 1998 Geoffrey Keating
+
+ PowerPC Foreign Function Interface
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+#include "ffi.h"
+
+#ifndef POWERPC64
+#include "ffi_common.h"
+#include "ffi_powerpc.h"
+
+
+/* About the SYSV ABI. */
+#define ASM_NEEDS_REGISTERS 4
+#define NUM_GPR_ARG_REGISTERS 8
+#define NUM_FPR_ARG_REGISTERS 8
+
+#if HAVE_LONG_DOUBLE_VARIANT && FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+/* Adjust size of ffi_type_longdouble. */
+void FFI_HIDDEN
+ffi_prep_types_sysv (ffi_abi abi)
+{
+ if ((abi & FFI_SYSV_LONG_DOUBLE_128) == 0)
+ {
+ ffi_type_longdouble.size = 8;
+ ffi_type_longdouble.alignment = 8;
+ }
+ else
+ {
+ ffi_type_longdouble.size = 16;
+ ffi_type_longdouble.alignment = 16;
+ }
+}
+#endif
+
+/* Transform long double, double and float to other types as per abi. */
+static int
+translate_float (int abi, int type)
+{
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ if (type == FFI_TYPE_LONGDOUBLE
+ && (abi & FFI_SYSV_LONG_DOUBLE_128) == 0)
+ type = FFI_TYPE_DOUBLE;
+#endif
+ if ((abi & FFI_SYSV_SOFT_FLOAT) != 0)
+ {
+ if (type == FFI_TYPE_FLOAT)
+ type = FFI_TYPE_UINT32;
+ else if (type == FFI_TYPE_DOUBLE)
+ type = FFI_TYPE_UINT64;
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ else if (type == FFI_TYPE_LONGDOUBLE)
+ type = FFI_TYPE_UINT128;
+ }
+ else if ((abi & FFI_SYSV_IBM_LONG_DOUBLE) == 0)
+ {
+ if (type == FFI_TYPE_LONGDOUBLE)
+ type = FFI_TYPE_STRUCT;
+#endif
+ }
+ return type;
+}
+
+/* ffi_prep_args_SYSV is called by the assembly routine once stack space
+ has been allocated for the function's arguments.
+
+ The stack layout we want looks like this:
+
+ | Return address from ffi_call_SYSV 4bytes | higher addresses
+ |--------------------------------------------|
+ | Previous backchain pointer 4 | stack pointer here
+ |--------------------------------------------|<+ <<< on entry to
+ | Saved r28-r31 4*4 | | ffi_call_SYSV
+ |--------------------------------------------| |
+ | GPR registers r3-r10 8*4 | | ffi_call_SYSV
+ |--------------------------------------------| |
+ | FPR registers f1-f8 (optional) 8*8 | |
+ |--------------------------------------------| | stack |
+ | Space for copied structures | | grows |
+ |--------------------------------------------| | down V
+ | Parameters that didn't fit in registers | |
+ |--------------------------------------------| | lower addresses
+ | Space for callee's LR 4 | |
+ |--------------------------------------------| | stack pointer here
+ | Current backchain pointer 4 |-/ during
+ |--------------------------------------------| <<< ffi_call_SYSV
+
+*/
+
+void FFI_HIDDEN
+ffi_prep_args_SYSV (extended_cif *ecif, unsigned *const stack)
+{
+ const unsigned bytes = ecif->cif->bytes;
+ const unsigned flags = ecif->cif->flags;
+
+ typedef union
+ {
+ char *c;
+ unsigned *u;
+ long long *ll;
+ float *f;
+ double *d;
+ } valp;
+
+ /* 'stacktop' points at the previous backchain pointer. */
+ valp stacktop;
+
+ /* 'gpr_base' points at the space for gpr3, and grows upwards as
+ we use GPR registers. */
+ valp gpr_base;
+ int intarg_count;
+
+#ifndef __NO_FPRS__
+ /* 'fpr_base' points at the space for fpr1, and grows upwards as
+ we use FPR registers. */
+ valp fpr_base;
+ int fparg_count;
+#endif
+
+ /* 'copy_space' grows down as we put structures in it. It should
+ stay 16-byte aligned. */
+ valp copy_space;
+
+ /* 'next_arg' grows up as we put parameters in it. */
+ valp next_arg;
+
+ int i;
+ ffi_type **ptr;
+#ifndef __NO_FPRS__
+ double double_tmp;
+#endif
+ union
+ {
+ void **v;
+ char **c;
+ signed char **sc;
+ unsigned char **uc;
+ signed short **ss;
+ unsigned short **us;
+ unsigned int **ui;
+ long long **ll;
+ float **f;
+ double **d;
+ } p_argv;
+ size_t struct_copy_size;
+ unsigned gprvalue;
+
+ stacktop.c = (char *) stack + bytes;
+ gpr_base.u = stacktop.u - ASM_NEEDS_REGISTERS - NUM_GPR_ARG_REGISTERS;
+ intarg_count = 0;
+#ifndef __NO_FPRS__
+ fpr_base.d = gpr_base.d - NUM_FPR_ARG_REGISTERS;
+ fparg_count = 0;
+ copy_space.c = ((flags & FLAG_FP_ARGUMENTS) ? fpr_base.c : gpr_base.c);
+#else
+ copy_space.c = gpr_base.c;
+#endif
+ next_arg.u = stack + 2;
+
+ /* Check that everything starts aligned properly. */
+ FFI_ASSERT (((unsigned long) (char *) stack & 0xF) == 0);
+ FFI_ASSERT (((unsigned long) copy_space.c & 0xF) == 0);
+ FFI_ASSERT (((unsigned long) stacktop.c & 0xF) == 0);
+ FFI_ASSERT ((bytes & 0xF) == 0);
+ FFI_ASSERT (copy_space.c >= next_arg.c);
+
+ /* Deal with return values that are actually pass-by-reference. */
+ if (flags & FLAG_RETVAL_REFERENCE)
+ {
+ *gpr_base.u++ = (unsigned long) (char *) ecif->rvalue;
+ intarg_count++;
+ }
+
+ /* Now for the arguments. */
+ p_argv.v = ecif->avalue;
+ for (ptr = ecif->cif->arg_types, i = ecif->cif->nargs;
+ i > 0;
+ i--, ptr++, p_argv.v++)
+ {
+ unsigned int typenum = (*ptr)->type;
+
+ typenum = translate_float (ecif->cif->abi, typenum);
+
+ /* Now test the translated value */
+ switch (typenum)
+ {
+#ifndef __NO_FPRS__
+# if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ case FFI_TYPE_LONGDOUBLE:
+ double_tmp = (*p_argv.d)[0];
+
+ if (fparg_count >= NUM_FPR_ARG_REGISTERS - 1)
+ {
+ if (intarg_count >= NUM_GPR_ARG_REGISTERS
+ && intarg_count % 2 != 0)
+ {
+ intarg_count++;
+ next_arg.u++;
+ }
+ *next_arg.d = double_tmp;
+ next_arg.u += 2;
+ double_tmp = (*p_argv.d)[1];
+ *next_arg.d = double_tmp;
+ next_arg.u += 2;
+ }
+ else
+ {
+ *fpr_base.d++ = double_tmp;
+ double_tmp = (*p_argv.d)[1];
+ *fpr_base.d++ = double_tmp;
+ }
+
+ fparg_count += 2;
+ FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
+ break;
+# endif
+ case FFI_TYPE_DOUBLE:
+ double_tmp = **p_argv.d;
+
+ if (fparg_count >= NUM_FPR_ARG_REGISTERS)
+ {
+ if (intarg_count >= NUM_GPR_ARG_REGISTERS
+ && intarg_count % 2 != 0)
+ {
+ intarg_count++;
+ next_arg.u++;
+ }
+ *next_arg.d = double_tmp;
+ next_arg.u += 2;
+ }
+ else
+ *fpr_base.d++ = double_tmp;
+ fparg_count++;
+ FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
+ break;
+
+ case FFI_TYPE_FLOAT:
+ double_tmp = **p_argv.f;
+ if (fparg_count >= NUM_FPR_ARG_REGISTERS)
+ {
+ *next_arg.f = (float) double_tmp;
+ next_arg.u += 1;
+ intarg_count++;
+ }
+ else
+ *fpr_base.d++ = double_tmp;
+ fparg_count++;
+ FFI_ASSERT (flags & FLAG_FP_ARGUMENTS);
+ break;
+#endif /* have FPRs */
+
+ case FFI_TYPE_UINT128:
+ /* The soft float ABI for long doubles works like this, a long double
+ is passed in four consecutive GPRs if available. A maximum of 2
+ long doubles can be passed in gprs. If we do not have 4 GPRs
+ left, the long double is passed on the stack, 4-byte aligned. */
+ {
+ unsigned int int_tmp;
+ unsigned int ii;
+ if (intarg_count >= NUM_GPR_ARG_REGISTERS - 3)
+ {
+ if (intarg_count < NUM_GPR_ARG_REGISTERS)
+ intarg_count = NUM_GPR_ARG_REGISTERS;
+ for (ii = 0; ii < 4; ii++)
+ {
+ int_tmp = (*p_argv.ui)[ii];
+ *next_arg.u++ = int_tmp;
+ }
+ }
+ else
+ {
+ for (ii = 0; ii < 4; ii++)
+ {
+ int_tmp = (*p_argv.ui)[ii];
+ *gpr_base.u++ = int_tmp;
+ }
+ }
+ intarg_count += 4;
+ break;
+ }
+
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ if (intarg_count == NUM_GPR_ARG_REGISTERS-1)
+ intarg_count++;
+ if (intarg_count >= NUM_GPR_ARG_REGISTERS)
+ {
+ if (intarg_count % 2 != 0)
+ {
+ intarg_count++;
+ next_arg.u++;
+ }
+ *next_arg.ll = **p_argv.ll;
+ next_arg.u += 2;
+ }
+ else
+ {
+ /* The abi states only certain register pairs can be
+ used for passing long long int specifically (r3,r4),
+ (r5,r6), (r7,r8), (r9,r10). If next arg is long long
+ but not correct starting register of pair then skip
+ until the proper starting register. */
+ if (intarg_count % 2 != 0)
+ {
+ intarg_count ++;
+ gpr_base.u++;
+ }
+ *gpr_base.ll++ = **p_argv.ll;
+ }
+ intarg_count += 2;
+ break;
+
+ case FFI_TYPE_STRUCT:
+ struct_copy_size = ((*ptr)->size + 15) & ~0xF;
+ copy_space.c -= struct_copy_size;
+ memcpy (copy_space.c, *p_argv.c, (*ptr)->size);
+
+ gprvalue = (unsigned long) copy_space.c;
+
+ FFI_ASSERT (copy_space.c > next_arg.c);
+ FFI_ASSERT (flags & FLAG_ARG_NEEDS_COPY);
+ goto putgpr;
+
+ case FFI_TYPE_UINT8:
+ gprvalue = **p_argv.uc;
+ goto putgpr;
+ case FFI_TYPE_SINT8:
+ gprvalue = **p_argv.sc;
+ goto putgpr;
+ case FFI_TYPE_UINT16:
+ gprvalue = **p_argv.us;
+ goto putgpr;
+ case FFI_TYPE_SINT16:
+ gprvalue = **p_argv.ss;
+ goto putgpr;
+
+ case FFI_TYPE_INT:
+ case FFI_TYPE_UINT32:
+ case FFI_TYPE_SINT32:
+ case FFI_TYPE_POINTER:
+
+ gprvalue = **p_argv.ui;
+
+ putgpr:
+ if (intarg_count >= NUM_GPR_ARG_REGISTERS)
+ *next_arg.u++ = gprvalue;
+ else
+ *gpr_base.u++ = gprvalue;
+ intarg_count++;
+ break;
+ }
+ }
+
+ /* Check that we didn't overrun the stack... */
+ FFI_ASSERT (copy_space.c >= next_arg.c);
+ FFI_ASSERT (gpr_base.u <= stacktop.u - ASM_NEEDS_REGISTERS);
+ /* The assert below is testing that the number of integer arguments agrees
+ with the number found in ffi_prep_cif_machdep(). However, intarg_count
+ is incremented whenever we place an FP arg on the stack, so account for
+ that before our assert test. */
+#ifndef __NO_FPRS__
+ if (fparg_count > NUM_FPR_ARG_REGISTERS)
+ intarg_count -= fparg_count - NUM_FPR_ARG_REGISTERS;
+ FFI_ASSERT (fpr_base.u
+ <= stacktop.u - ASM_NEEDS_REGISTERS - NUM_GPR_ARG_REGISTERS);
+#endif
+ FFI_ASSERT (flags & FLAG_4_GPR_ARGUMENTS || intarg_count <= 4);
+}
+
+
+/* Perform machine dependent cif processing */
+static ffi_status
+ffi_prep_cif_sysv_core (ffi_cif *cif)
+{
+ /* All this is for the SYSV and LINUX64 ABI. */
+ ffi_type **ptr;
+ unsigned bytes;
+ unsigned i, fparg_count = 0, intarg_count = 0;
+ unsigned flags = cif->flags;
+ unsigned struct_copy_size = 0;
+ unsigned type = cif->rtype->type;
+ unsigned size = cif->rtype->size;
+
+ /* The machine-independent calculation of cif->bytes doesn't work
+ for us. Redo the calculation. */
+
+ /* Space for the frame pointer, callee's LR, and the asm's temp regs. */
+ bytes = (2 + ASM_NEEDS_REGISTERS) * sizeof (int);
+
+ /* Space for the GPR registers. */
+ bytes += NUM_GPR_ARG_REGISTERS * sizeof (int);
+
+ /* Return value handling. The rules for SYSV are as follows:
+ - 32-bit (or less) integer values are returned in gpr3;
+ - Structures of size <= 4 bytes also returned in gpr3;
+ - 64-bit integer values and structures between 5 and 8 bytes are returned
+ in gpr3 and gpr4;
+ - Larger structures are allocated space and a pointer is passed as
+ the first argument.
+ - Single/double FP values are returned in fpr1;
+ - long doubles (if not equivalent to double) are returned in
+ fpr1,fpr2 for Linux and as for large structs for SysV. */
+
+ type = translate_float (cif->abi, type);
+
+ switch (type)
+ {
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ case FFI_TYPE_LONGDOUBLE:
+ flags |= FLAG_RETURNS_128BITS;
+ /* Fall through. */
+#endif
+ case FFI_TYPE_DOUBLE:
+ flags |= FLAG_RETURNS_64BITS;
+ /* Fall through. */
+ case FFI_TYPE_FLOAT:
+ flags |= FLAG_RETURNS_FP;
+#ifdef __NO_FPRS__
+ return FFI_BAD_ABI;
+#endif
+ break;
+
+ case FFI_TYPE_UINT128:
+ flags |= FLAG_RETURNS_128BITS;
+ /* Fall through. */
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ flags |= FLAG_RETURNS_64BITS;
+ break;
+
+ case FFI_TYPE_STRUCT:
+ /*
+ * The final SYSV ABI says that structures smaller or equal 8 bytes
+ * are returned in r3/r4. A draft ABI used by linux instead
+ * returns them in memory.
+ *
+ * NOTE: The assembly code can safely assume that it just needs to
+ * store both r3 and r4 into a 8-byte word-aligned buffer, as
+ * we allocate a temporary buffer in ffi_call() if this flag is
+ * set.
+ */
+ if ((cif->abi & FFI_SYSV_STRUCT_RET) != 0 && size <= 8)
+ {
+ flags |= FLAG_RETURNS_SMST;
+ break;
+ }
+ intarg_count++;
+ flags |= FLAG_RETVAL_REFERENCE;
+ /* Fall through. */
+ case FFI_TYPE_VOID:
+ flags |= FLAG_RETURNS_NOTHING;
+ break;
+
+ default:
+ /* Returns 32-bit integer, or similar. Nothing to do here. */
+ break;
+ }
+
+ /* The first NUM_GPR_ARG_REGISTERS words of integer arguments, and the
+ first NUM_FPR_ARG_REGISTERS fp arguments, go in registers; the rest
+ goes on the stack. Structures and long doubles (if not equivalent
+ to double) are passed as a pointer to a copy of the structure.
+ Stuff on the stack needs to keep proper alignment. */
+ for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
+ {
+ unsigned short typenum = (*ptr)->type;
+
+ typenum = translate_float (cif->abi, typenum);
+
+ switch (typenum)
+ {
+ case FFI_TYPE_FLOAT:
+ fparg_count++;
+#ifdef __NO_FPRS__
+ return FFI_BAD_ABI;
+#endif
+ break;
+
+#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ case FFI_TYPE_LONGDOUBLE:
+ fparg_count++;
+ /* Fall thru */
+#endif
+ case FFI_TYPE_DOUBLE:
+ fparg_count++;
+ /* If this FP arg is going on the stack, it must be
+ 8-byte-aligned. */
+ if (fparg_count > NUM_FPR_ARG_REGISTERS
+ && intarg_count >= NUM_GPR_ARG_REGISTERS
+ && intarg_count % 2 != 0)
+ intarg_count++;
+#ifdef __NO_FPRS__
+ return FFI_BAD_ABI;
+#endif
+ break;
+
+ case FFI_TYPE_UINT128:
+ /*
+ * A long double in FFI_LINUX_SOFT_FLOAT can use only a set
+ * of four consecutive gprs. If we do not have enough, we
+ * have to adjust the intarg_count value.
+ */
+ if (intarg_count >= NUM_GPR_ARG_REGISTERS - 3
+ && intarg_count < NUM_GPR_ARG_REGISTERS)
+ intarg_count = NUM_GPR_ARG_REGISTERS;
+ intarg_count += 4;
+ break;
+
+ case FFI_TYPE_UINT64:
+ case FFI_TYPE_SINT64:
+ /* 'long long' arguments are passed as two words, but
+ either both words must fit in registers or both go
+ on the stack. If they go on the stack, they must
+ be 8-byte-aligned.
+
+ Also, only certain register pairs can be used for
+ passing long long int -- specifically (r3,r4), (r5,r6),
+ (r7,r8), (r9,r10).
+ */
+ if (intarg_count == NUM_GPR_ARG_REGISTERS-1
+ || intarg_count % 2 != 0)
+ intarg_count++;
+ intarg_count += 2;
+ break;
+
+ case FFI_TYPE_STRUCT:
+ /* We must allocate space for a copy of these to enforce
+ pass-by-value. Pad the space up to a multiple of 16
+ bytes (the maximum alignment required for anything under
+ the SYSV ABI). */
+ struct_copy_size += ((*ptr)->size + 15) & ~0xF;
+ /* Fall through (allocate space for the pointer). */
+
+ case FFI_TYPE_POINTER:
+ case FFI_TYPE_INT:
+ case FFI_TYPE_UINT32:
+ case FFI_TYPE_SINT32:
+ case FFI_TYPE_UINT16:
+ case FFI_TYPE_SINT16:
+ case FFI_TYPE_UINT8:
+ case FFI_TYPE_SINT8:
+ /* Everything else is passed as a 4-byte word in a GPR, either
+ the object itself or a pointer to it. */
+ intarg_count++;
+ break;
+
+ default:
+ FFI_ASSERT (0);
+ }
+ }
+
+ if (fparg_count != 0)
+ flags |= FLAG_FP_ARGUMENTS;
+ if (intarg_count > 4)
+ flags |= FLAG_4_GPR_ARGUMENTS;
+ if (struct_copy_size != 0)
+ flags |= FLAG_ARG_NEEDS_COPY;
+
+ /* Space for the FPR registers, if needed. */
+ if (fparg_count != 0)
+ bytes += NUM_FPR_ARG_REGISTERS * sizeof (double);
+
+ /* Stack space. */
+ if (intarg_count > NUM_GPR_ARG_REGISTERS)
+ bytes += (intarg_count - NUM_GPR_ARG_REGISTERS) * sizeof (int);
+ if (fparg_count > NUM_FPR_ARG_REGISTERS)
+ bytes += (fparg_count - NUM_FPR_ARG_REGISTERS) * sizeof (double);
+
+ /* The stack space allocated needs to be a multiple of 16 bytes. */
+ bytes = (bytes + 15) & ~0xF;
+
+ /* Add in the space for the copied structures. */
+ bytes += struct_copy_size;
+
+ cif->flags = flags;
+ cif->bytes = bytes;
+
+ return FFI_OK;
+}
+
+
+ffi_status FFI_HIDDEN
+ffi_prep_cif_sysv (ffi_cif *cif)
+{
+ cif->nfixedargs = cif->nargs;
+ return ffi_prep_cif_sysv_core (cif);
+}
+
+ffi_status FFI_HIDDEN
+ffi_prep_cif_sysv_var (ffi_cif *cif,
+ unsigned int nfixedargs,
+ unsigned int ntotalargs MAYBE_UNUSED)
+{
+ cif->nfixedargs = nfixedargs;
+ return ffi_prep_cif_sysv_core (cif);
+}
+
+
+#define MIN_CACHE_LINE_SIZE 8
+
+static void
+flush_icache (char *wraddr, char *xaddr, int size)
+{
+ int i;
+ for (i = 0; i < size; i += MIN_CACHE_LINE_SIZE)
+ __asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;"
+ : : "r" (xaddr + i), "r" (wraddr + i) : "memory");
+ __asm__ volatile ("icbi 0,%0;" "dcbf 0,%1;" "sync;" "isync;"
+ : : "r"(xaddr + size - 1), "r"(wraddr + size - 1)
+ : "memory");
+}
+
+
+ffi_status FFI_HIDDEN
+ffi_prep_closure_loc_sysv (ffi_closure *closure,
+ ffi_cif *cif,
+ void (*fun) (ffi_cif *, void *, void **, void *),
+ void *user_data,
+ void *codeloc)
+{
+ unsigned int *tramp;
+
+ if (cif->abi < FFI_SYSV || cif->abi >= FFI_LAST_ABI)
+ return FFI_BAD_ABI;
+
+ tramp = (unsigned int *) &closure->tramp[0];
+ tramp[0] = 0x7c0802a6; /* mflr r0 */
+ tramp[1] = 0x4800000d; /* bl 10 <trampoline_initial+0x10> */
+ tramp[4] = 0x7d6802a6; /* mflr r11 */
+ tramp[5] = 0x7c0803a6; /* mtlr r0 */
+ tramp[6] = 0x800b0000; /* lwz r0,0(r11) */
+ tramp[7] = 0x816b0004; /* lwz r11,4(r11) */
+ tramp[8] = 0x7c0903a6; /* mtctr r0 */
+ tramp[9] = 0x4e800420; /* bctr */
+ *(void **) &tramp[2] = (void *) ffi_closure_SYSV; /* function */
+ *(void **) &tramp[3] = codeloc; /* context */
+
+ /* Flush the icache. */
+ flush_icache ((char *)tramp, (char *)codeloc, FFI_TRAMPOLINE_SIZE);
+
+ closure->cif = cif;
+ closure->fun = fun;
+ closure->user_data = user_data;
+
+ return FFI_OK;
+}
+
+
+/* Basically the trampoline invokes ffi_closure_SYSV, and on
+ * entry, r11 holds the address of the closure.
+ * After storing the registers that could possibly contain
+ * parameters to be passed into the stack frame and setting
+ * up space for a return value, ffi_closure_SYSV invokes the
+ * following helper function to do most of the work
+ */
+
+int
+ffi_closure_helper_SYSV (ffi_closure *closure, void *rvalue,
+ unsigned long *pgr, ffi_dblfl *pfr,
+ unsigned long *pst)
+{
+ /* rvalue is the pointer to space for return value in closure assembly */
+ /* pgr is the pointer to where r3-r10 are stored in ffi_closure_SYSV */
+ /* pfr is the pointer to where f1-f8 are stored in ffi_closure_SYSV */
+ /* pst is the pointer to outgoing parameter stack in original caller */
+
+ void ** avalue;
+ ffi_type ** arg_types;
+ long i, avn;
+#ifndef __NO_FPRS__
+ long nf = 0; /* number of floating registers already used */
+#endif
+ long ng = 0; /* number of general registers already used */
+
+ ffi_cif *cif = closure->cif;
+ unsigned size = cif->rtype->size;
+ unsigned short rtypenum = cif->rtype->type;
+
+ avalue = alloca (cif->nargs * sizeof (void *));
+
+ /* First translate for softfloat/nonlinux */
+ rtypenum = translate_float (cif->abi, rtypenum);
+
+ /* Copy the caller's structure return value address so that the closure
+ returns the data directly to the caller.
+ For FFI_SYSV the result is passed in r3/r4 if the struct size is less
+ or equal 8 bytes. */
+ if (rtypenum == FFI_TYPE_STRUCT
+ && !((cif->abi & FFI_SYSV_STRUCT_RET) != 0 && size <= 8))
+ {
+ rvalue = (void *) *pgr;
+ ng++;
+ pgr++;
+ }
+
+ i = 0;
+ avn = cif->nargs;
+ arg_types = cif->arg_types;
+
+ /* Grab the addresses of the arguments from the stack frame. */
+ while (i < avn) {
+ unsigned short typenum = arg_types[i]->type;
+
+ /* We may need to handle some values depending on ABI */
+ typenum = translate_float (cif->abi, typenum);
+
+ switch (typenum)
+ {
+#ifndef __NO_FPRS__
+ case FFI_TYPE_FLOAT:
+ /* unfortunately float values are stored as doubles
+ * in the ffi_closure_SYSV code (since we don't check
+ * the type in that routine).
+ */
+
+ /* there are 8 64bit floating point registers */
+
+ if (nf < 8)
+ {
+ double temp = pfr->d;
+ pfr->f = (float) temp;
+ avalue[i] = pfr;
+ nf++;
+ pfr++;
+ }
+ else
+ {
+ /* FIXME? here we are really changing the values
+ * stored in the original calling routines outgoing
+ * parameter stack. This is probably a really
+ * naughty thing to do but...
+ */
+ avalue[i] = pst;
+ pst += 1;
+ }
+ break;
+
+ case FFI_TYPE_DOUBLE:
+ /* On the outgoing stack all values are aligned to 8 */
+ /* there are 8 64bit floating point registers */
+
+ if (nf < 8)
+ {
+ avalue[i] = pfr;
+ nf++;
+ pfr++;
+ }
+ else
+ {
+ if (((long) pst) & 4)
+ pst++;
+ avalue[i] = pst;
+ pst += 2;
+ }
+ break;
+
+# if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+ case FFI_TYPE_LONGDOUBLE:
+ if (nf < 7)
+ {
+ avalue[i] = pfr;
+ pfr += 2;
+ nf += 2;
+ }
+ else
+ {
+ if (((long) pst) & 4)
+ pst++;
+ avalue[i] = pst;
+ pst += 4;
+ nf = 8;
+ }
+ break;
+# endif
+#endif
+
+ case FFI_TYPE_UINT128:
+ /*
+ * Test if for the whole long double, 4 gprs are available.
+ * otherwise the stuff ends up on the stack.
+ */
+ if (ng < 5)
+ {
+ avalue[i] = pgr;
+ pgr += 4;
+ ng += 4;
+ }
+ else
+ {
+ avalue[i] = pst;
+ pst += 4;
+ ng = 8+4;
+ }
+ break;
+
+ case FFI_TYPE_SINT8:
+ case FFI_TYPE_UINT8:
+#ifndef __LITTLE_ENDIAN__
+ /* there are 8 gpr registers used to pass values */
+ if (ng < 8)
+ {
+ avalue[i] = (char *) pgr + 3;
+ ng++;
+ pgr++;
+ }
+ else
+ {
+ avalue[i] = (char *) pst + 3;
+ pst++;
+ }
+ break;
+#endif
+
+ case FFI_TYPE_SINT16:
+ case FFI_TYPE_UINT16:
+#ifndef __LITTLE_ENDIAN__
+ /* there are 8 gpr registers used to pass values */
+ if (ng < 8)
+ {
+ avalue[i] = (char *) pgr + 2;
+ ng++;
+ pgr++;
+ }
+ else
+ {
+ avalue[i] = (char *) pst + 2;
+ pst++;
+ }
+ break;
+#endif
+
+ case FFI_TYPE_SINT32:
+ case FFI_TYPE_UINT32:
+ case FFI_TYPE_POINTER:
+ /* there are 8 gpr registers used to pass values */
+ if (ng < 8)
+ {
+ avalue[i] = pgr;
+ ng++;
+ pgr++;
+ }
+ else
+ {
+ avalue[i] = pst;
+ pst++;
+ }
+ break;
+
+ case FFI_TYPE_STRUCT:
+ /* Structs are passed by reference. The address will appear in a
+ gpr if it is one of the first 8 arguments. */
+ if (ng < 8)
+ {
+ avalue[i] = (void *) *pgr;
+ ng++;
+ pgr++;
+ }
+ else
+ {
+ avalue[i] = (void *) *pst;
+ pst++;
+ }
+ break;
+
+ case FFI_TYPE_SINT64:
+ case FFI_TYPE_UINT64:
+ /* passing long long ints are complex, they must
+ * be passed in suitable register pairs such as
+ * (r3,r4) or (r5,r6) or (r6,r7), or (r7,r8) or (r9,r10)
+ * and if the entire pair aren't available then the outgoing
+ * parameter stack is used for both but an alignment of 8
+ * must will be kept. So we must either look in pgr
+ * or pst to find the correct address for this type
+ * of parameter.
+ */
+ if (ng < 7)
+ {
+ if (ng & 0x01)
+ {
+ /* skip r4, r6, r8 as starting points */
+ ng++;
+ pgr++;
+ }
+ avalue[i] = pgr;
+ ng += 2;
+ pgr += 2;
+ }
+ else
+ {
+ if (((long) pst) & 4)
+ pst++;
+ avalue[i] = pst;
+ pst += 2;
+ ng = 8;
+ }
+ break;
+
+ default:
+ FFI_ASSERT (0);
+ }
+
+ i++;
+ }
+
+
+ (closure->fun) (cif, rvalue, avalue, closure->user_data);
+
+ /* Tell ffi_closure_SYSV how to perform return type promotions.
+ Because the FFI_SYSV ABI returns the structures <= 8 bytes in r3/r4
+ we have to tell ffi_closure_SYSV how to treat them. We combine the base
+ type FFI_SYSV_TYPE_SMALL_STRUCT - 1 with the size of the struct.
+ So a one byte struct gets the return type 16. Return type 1 to 15 are
+ already used and we never have a struct with size zero. That is the reason
+ for the subtraction of 1. See the comment in ffitarget.h about ordering.
+ */
+ if (rtypenum == FFI_TYPE_STRUCT
+ && (cif->abi & FFI_SYSV_STRUCT_RET) != 0 && size <= 8)
+ return FFI_SYSV_TYPE_SMALL_STRUCT - 1 + size;
+ return rtypenum;
+}
+#endif
diff --git a/src/powerpc/ffitarget.h b/src/powerpc/ffitarget.h
index 2be728e..3307734 100644
--- a/src/powerpc/ffitarget.h
+++ b/src/powerpc/ffitarget.h
@@ -60,45 +60,57 @@ typedef signed long ffi_sarg;
typedef enum ffi_abi {
FFI_FIRST_ABI = 0,
-#ifdef POWERPC
- FFI_SYSV,
- FFI_GCC_SYSV,
- FFI_LINUX64,
- FFI_LINUX,
- FFI_LINUX_SOFT_FLOAT,
-# if defined(POWERPC64)
- FFI_DEFAULT_ABI = FFI_LINUX64,
-# elif defined(__NO_FPRS__)
- FFI_DEFAULT_ABI = FFI_LINUX_SOFT_FLOAT,
-# elif (__LDBL_MANT_DIG__ == 106)
- FFI_DEFAULT_ABI = FFI_LINUX,
-# else
- FFI_DEFAULT_ABI = FFI_GCC_SYSV,
-# endif
-#endif
-
-#ifdef POWERPC_AIX
+#if defined (POWERPC_AIX)
FFI_AIX,
FFI_DARWIN,
FFI_DEFAULT_ABI = FFI_AIX,
-#endif
+ FFI_LAST_ABI
-#ifdef POWERPC_DARWIN
+#elif defined (POWERPC_DARWIN)
FFI_AIX,
FFI_DARWIN,
FFI_DEFAULT_ABI = FFI_DARWIN,
-#endif
+ FFI_LAST_ABI
+
+#elif defined (POWERPC64)
+ FFI_LINUX = 1,
+ FFI_LINUX_STRUCT_ALIGN = 2,
+ FFI_LINUX_LONG_DOUBLE_128 = 4,
+ FFI_DEFAULT_ABI = (FFI_LINUX
+# ifdef __STRUCT_PARM_ALIGN__
+ | FFI_LINUX_STRUCT_ALIGN
+# endif
+# ifdef __LONG_DOUBLE_128__
+ | FFI_LINUX_LONG_DOUBLE_128
+# endif
+ ),
+ FFI_LAST_ABI = 8
-#ifdef POWERPC_FREEBSD
- FFI_SYSV,
- FFI_GCC_SYSV,
- FFI_LINUX64,
- FFI_LINUX,
- FFI_LINUX_SOFT_FLOAT,
- FFI_DEFAULT_ABI = FFI_SYSV,
+#else
+ FFI_SYSV = 1,
+ FFI_SYSV_SOFT_FLOAT = 2,
+ FFI_SYSV_STRUCT_RET = 4,
+ FFI_SYSV_IBM_LONG_DOUBLE = 8,
+ FFI_SYSV_LONG_DOUBLE_128 = 16,
+
+ FFI_DEFAULT_ABI = (FFI_SYSV
+# ifdef __NO_FPRS__
+ | FFI_SYSV_SOFT_FLOAT
+# endif
+# if (defined (__SVR4_STRUCT_RETURN) \
+ || defined (POWERPC_FREEBSD) && !defined (__AIX_STRUCT_RETURN))
+ | FFI_SYSV_STRUCT_RET
+# endif
+# if __LDBL_MANT_DIG__ == 106
+ | FFI_SYSV_IBM_LONG_DOUBLE
+# endif
+# ifdef __LONG_DOUBLE_128__
+ | FFI_SYSV_LONG_DOUBLE_128
+# endif
+ ),
+ FFI_LAST_ABI = 32
#endif
- FFI_LAST_ABI
} ffi_abi;
#endif
diff --git a/src/powerpc/linux64.S b/src/powerpc/linux64.S
index 85b8aaa..c4d01d8 100644
--- a/src/powerpc/linux64.S
+++ b/src/powerpc/linux64.S
@@ -29,7 +29,7 @@
#include <fficonfig.h>
#include <ffi.h>
-#ifdef __powerpc64__
+#ifdef POWERPC64
.hidden ffi_call_LINUX64
.globl ffi_call_LINUX64
# if _CALL_ELF == 2
diff --git a/src/powerpc/linux64_closure.S b/src/powerpc/linux64_closure.S
index 4d012cc..46a9ddf 100644
--- a/src/powerpc/linux64_closure.S
+++ b/src/powerpc/linux64_closure.S
@@ -30,7 +30,7 @@
.file "linux64_closure.S"
-#ifdef __powerpc64__
+#ifdef POWERPC64
FFI_HIDDEN (ffi_closure_LINUX64)
.globl ffi_closure_LINUX64
# if _CALL_ELF == 2
diff --git a/src/powerpc/ppc_closure.S b/src/powerpc/ppc_closure.S
index 1f72340..075922c 100644
--- a/src/powerpc/ppc_closure.S
+++ b/src/powerpc/ppc_closure.S
@@ -31,7 +31,7 @@
.file "ppc_closure.S"
-#ifndef __powerpc64__
+#ifndef POWERPC64
ENTRY(ffi_closure_SYSV)
.LFB1:
@@ -378,8 +378,7 @@ END(ffi_closure_SYSV)
.align 2
.LEFDE1:
-#endif
-
#if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
#endif
+#endif
diff --git a/src/powerpc/sysv.S b/src/powerpc/sysv.S
index 675ed03..fed2380 100644
--- a/src/powerpc/sysv.S
+++ b/src/powerpc/sysv.S
@@ -30,7 +30,7 @@
#include <ffi.h>
#include <powerpc/asm.h>
-#ifndef __powerpc64__
+#ifndef POWERPC64
.globl ffi_prep_args_SYSV
ENTRY(ffi_call_SYSV)
.LFB1:
@@ -213,8 +213,8 @@ END(ffi_call_SYSV)
.uleb128 0x1c
.align 2
.LEFDE1:
-#endif
#if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
#endif
+#endif
diff --git a/src/prep_cif.c b/src/prep_cif.c
index e373cbd..a66ee23 100644
--- a/src/prep_cif.c
+++ b/src/prep_cif.c
@@ -133,6 +133,10 @@ ffi_status FFI_HIDDEN ffi_prep_cif_core(ffi_cif *cif, ffi_abi abi,
cif->flags = 0;
+#if HAVE_LONG_DOUBLE_VARIANT
+ ffi_prep_types (abi);
+#endif
+
/* Initialize the return type if necessary */
if ((cif->rtype->size == 0) && (initialize_aggregate(cif->rtype) != FFI_OK))
return FFI_BAD_TYPEDEF;
diff --git a/src/types.c b/src/types.c
index 0a11eb0..0de5994 100644
--- a/src/types.c
+++ b/src/types.c
@@ -44,6 +44,17 @@ const ffi_type ffi_type_##name = { \
id, NULL \
}
+#define FFI_NONCONST_TYPEDEF(name, type, id) \
+struct struct_align_##name { \
+ char c; \
+ type x; \
+}; \
+ffi_type ffi_type_##name = { \
+ sizeof(type), \
+ offsetof(struct struct_align_##name, x), \
+ id, NULL \
+}
+
/* Size and alignment are fake here. They must not be 0. */
const ffi_type ffi_type_void = {
1, 1, FFI_TYPE_VOID, NULL
@@ -73,5 +84,9 @@ FFI_TYPEDEF(double, double, FFI_TYPE_DOUBLE);
# endif
const ffi_type ffi_type_longdouble = { 16, 16, 4, NULL };
#elif FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
+# if HAVE_LONG_DOUBLE_VARIANT
+FFI_NONCONST_TYPEDEF(longdouble, long double, FFI_TYPE_LONGDOUBLE);
+# else
FFI_TYPEDEF(longdouble, long double, FFI_TYPE_LONGDOUBLE);
+# endif
#endif
--
Alan Modra
Australia Development Lab, IBM
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Tidy powerpc*-linux support
2013-11-20 7:38 ` Tidy powerpc*-linux support Alan Modra
@ 2014-05-30 5:10 ` Ryan Hill
0 siblings, 0 replies; 6+ messages in thread
From: Ryan Hill @ 2014-05-30 5:10 UTC (permalink / raw)
To: libffi-discuss
[-- Attachment #1: Type: text/plain, Size: 2924 bytes --]
On Wed, 20 Nov 2013 18:08:25 +1030
Alan Modra <amodra@gmail.com> wrote:
> As threatened.
>
> This separates the 32-bit sysv/linux/bsd code from the 64-bit linux
> code, and makes it possible to link code compiled with different
> options to those used to compile libffi. For example, a
> -mlong-double-128 libffi can be used with -mlong-double-64 code.
>
> Tested powerpc-linux, powerpc64-linux, powerpc64le-linux, and the
> hacky powerpc-freebsd simulated setup I used earlier. I've tried a
> few combinations of ABI variations; -mlong-double-64/-mlong-double-128
> and -msvr4-struct-return/-maix-struct-return pass the testuite with
> flying colours. Testing -msoft-float ran into lack of soft-float
> multilibs on my system, but I looked at some testcases under gdb and
> they seemed to do the right thing.
>
> * Makefile.am (EXTRA_DIST): Add new src/powerpc files.
> (nodist_libffi_la_SOURCES <POWERPC, POWERPC_FREEBSD>): Likewise.
> * configure.ac (HAVE_LONG_DOUBLE_VARIANT): Define for powerpc.
> * include/ffi.h.in (ffi_prep_types): Declare.
> * src/prep_cif.c (ffi_prep_cif_core): Call ffi_prep_types.
> * src/types.c (FFI_NONCONST_TYPEDEF): Define and use for
> HAVE_LONG_DOUBLE_VARIANT.
> * src/powerpc/ffi_powerpc.h: New file.
> * src/powerpc/ffi.c: Split into..
> * src/powerpc/ffi_sysv.c: ..new file, and..
> * src/powerpc/ffi_linux64.c: ..new file, rewriting parts.
> * src/powerpc/ffitarget.h (enum ffi_abi): Rewrite powerpc ABI
> selection as bits controlling features.
> * src/powerpc/linux64.S: For consistency, use POWERPC64 rather
> than __powerpc64__.
> * src/powerpc/linux64_closure.S: Likewise.
> * src/powerpc/ppc_closure.S: Likewise. Move .note.FNU-stack
> inside guard.
> * src/powerpc/sysv.S: Likewise.
> * configure: Regenerate.
> * fficonfig.h.in: Regenerate.
> * Makefile.in: Regenerate.
[...]
> --- a/include/ffi.h.in
> +++ b/include/ffi.h.in
> @@ -221,6 +221,11 @@ typedef struct {
> #endif
> } ffi_cif;
>
> +#if HAVE_LONG_DOUBLE_VARIANT
> +/* Used to adjust size/alignment of ffi types. */
> +void ffi_prep_types (ffi_abi abi);
> +# endif
> +
> /* Used internally, but overridden by some architectures */
> ffi_status ffi_prep_cif_core(ffi_cif *cif,
> ffi_abi abi,
This is an installed header and including it now causes a warning:
In file included from ./include/parrot/parrot.h:94:0,
from src/string/api.c:27:
/usr/lib64/libffi-3.1/include/ffi.h:224:5: error: "HAVE_LONG_DOUBLE_VARIANT"
is not defined [-Werror=undef] #if HAVE_LONG_DOUBLE_VARIANT
^
cc1: some warnings being treated as errors
Did you mean to use @HAVE_LONG_DOUBLE_VARIANT@?
--
Ryan Hill psn: dirtyepic_sk
gcc-porting/toolchain/wxwidgets @ gentoo.org
47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-05-30 5:10 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-11-17 3:17 Straying #endif in ppc_closure.S Alan Modra
2013-11-18 11:38 ` Anthony Green
2013-11-19 0:14 ` Alan Modra
2013-11-20 7:35 ` PowerPC64 ELFv2 fix 2 of 2 Alan Modra
2013-11-20 7:38 ` Tidy powerpc*-linux support Alan Modra
2014-05-30 5:10 ` Ryan Hill
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