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sysv.S: Load correct cr to compare if we have long double. 

2007-11-17  Andreas Tobler  <a.tobler@schweiz.org>

	* src/powerpc/sysv.S: Load correct cr to compare if we have long double.
	* src/powerpc/linux64.S: Likewise.
	* src/powerpc/ffi.c: Add a comment to show which part goes into cr6.
	* testsuite/libffi.call/return_ldl.c: New test.

From-SVN: r130247
This commit is contained in:
Andreas Tobler 2007-11-16 23:24:53 +00:00 committed by Andreas Tobler
parent f5fd0cf12d
commit e84296c66c
5 changed files with 45 additions and 1 deletions
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7
libffi/ChangeLog
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@ -1,3 +1,10 @@
2007-11-17 Andreas Tobler <a.tobler@schweiz.org>
* src/powerpc/sysv.S: Load correct cr to compare if we have long double.
* src/powerpc/linux64.S: Likewise.
* src/powerpc/ffi.c: Add a comment to show which part goes into cr6.
* testsuite/libffi.call/return_ldl.c: New test.
2007-09-04 <aph@redhat.com> 2007-09-04 <aph@redhat.com>
* src/arm/sysv.S (UNWIND): New. * src/arm/sysv.S (UNWIND): New.

3
libffi/src/powerpc/ffi.c
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@ -40,7 +40,8 @@ enum {
FLAG_RETURNS_NOTHING = 1 << (31-30), /* These go in cr7 */ FLAG_RETURNS_NOTHING = 1 << (31-30), /* These go in cr7 */
FLAG_RETURNS_FP = 1 << (31-29), FLAG_RETURNS_FP = 1 << (31-29),
FLAG_RETURNS_64BITS = 1 << (31-28), FLAG_RETURNS_64BITS = 1 << (31-28),
FLAG_RETURNS_128BITS = 1 << (31-27),
FLAG_RETURNS_128BITS = 1 << (31-27), /* cr6 */
FLAG_ARG_NEEDS_COPY = 1 << (31- 7), FLAG_ARG_NEEDS_COPY = 1 << (31- 7),
FLAG_FP_ARGUMENTS = 1 << (31- 6), /* cr1.eq; specified by ABI */ FLAG_FP_ARGUMENTS = 1 << (31- 6), /* cr1.eq; specified by ABI */

1
libffi/src/powerpc/linux64.S
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@ -125,6 +125,7 @@ ffi_call_LINUX64:
.Lfp_return_value: .Lfp_return_value:
bf 28, .Lfloat_return_value bf 28, .Lfloat_return_value
stfd %f1, 0(%r30) stfd %f1, 0(%r30)
mtcrf 0x02, %r31 /* cr6 */
bf 27, .Ldone_return_value bf 27, .Ldone_return_value
stfd %f2, 8(%r30) stfd %f2, 8(%r30)
b .Ldone_return_value b .Ldone_return_value

1
libffi/src/powerpc/sysv.S
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@ -121,6 +121,7 @@ L(done_return_value):
L(fp_return_value): L(fp_return_value):
bf 28,L(float_return_value) bf 28,L(float_return_value)
stfd %f1,0(%r30) stfd %f1,0(%r30)
mtcrf 0x02,%r31 /* cr6 */
bf 27,L(done_return_value) bf 27,L(done_return_value)
stfd %f2,8(%r30) stfd %f2,8(%r30)
b L(done_return_value) b L(done_return_value)

34
libffi/testsuite/libffi.call/return_ldl.c Normal file
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@ -0,0 +1,34 @@
/* Area: ffi_call
Purpose: Check return value long double.
Limitations: none.
PR: none.
Originator: <andreast@gcc.gnu.org> 20071113 */
/* { dg-do run } */
#include "ffitest.h"
static long double return_ldl(long double ldl)
{
return 2*ldl;
}
int main (void)
{
ffi_cif cif;
ffi_type *args[MAX_ARGS];
void *values[MAX_ARGS];
long double ldl, rldl;
args[0] = &ffi_type_longdouble;
values[0] = &ldl;
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
&ffi_type_longdouble, args) == FFI_OK);
for (ldl = -127.0; ldl < 127.0; ldl++)
{
ffi_call(&cif, FFI_FN(return_ldl), &rldl, values);
CHECK(rldl == 2 * ldl);
}
exit(0);
}