diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/i386/clobbers.c')
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/clobbers.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/clobbers.c b/gcc/testsuite/gcc.target/i386/clobbers.c new file mode 100644 index 000000000..17987db97 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/clobbers.c @@ -0,0 +1,38 @@ +/* Test asm clobbers on x86. */ + +/* { dg-do run } */ + +extern void abort (void); + +int main () +{ + int i; + __asm__ ("movl $1,%0\n\txorl %%eax,%%eax" : "=r" (i) : : "eax"); + if (i != 1) + abort (); + /* On darwin you can't call external functions from non-pic code, + however, clobbering ebx isn't valid in pic code. Instead of + disabling the whole test, just disable the ebx clobbering part. + Ditto for any x86 system that is ilp32 && pic. + */ +#if !(defined (__MACH__)) +#if ! defined (__PIC__) || defined (__LP64__) + __asm__ ("movl $1,%0\n\txorl %%ebx,%%ebx" : "=r" (i) : : "ebx"); + if (i != 1) + abort (); +#endif /* ! pic || lp64 */ +#endif + __asm__ ("movl $1,%0\n\txorl %%ecx,%%ecx" : "=r" (i) : : "ecx"); + if (i != 1) + abort (); + __asm__ ("movl $1,%0\n\txorl %%edx,%%edx" : "=r" (i) : : "edx"); + if (i != 1) + abort (); + __asm__ ("movl $1,%0\n\txorl %%esi,%%esi" : "=r" (i) : : "esi"); + if (i != 1) + abort (); + __asm__ ("movl $1,%0\n\txorl %%edi,%%edi" : "=r" (i) : : "edi"); + if (i != 1) + abort (); + return 0; +} |