Viewing file:  sse2-mmx-maskmovq.c (2.1 KB) -rw-r--r--
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/* { dg-do run { target { sysconf && mmap } } } */
/* { dg-options "-O2 -fno-strict-aliasing -msse2" } */
/* { dg-additional-options "-mno-mmx" { target { ! ia32 } } } */
#include <unistd.h>
#include <sys/mman.h>
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
#include "sse2-check.h"
#include "mmx-vals.h"
__attribute__((noinline, noclone))
static void
test_maskmovq (long long *ll1, long long *ll2, long long *r)
{
__m64 t1 = *(__m64 *) ll1;
__m64 t2 = *(__m64 *) ll2;
_m_maskmovq (t1, t2, (char *) r);
}
/* Routine to manually compute the results */
static void
compute_correct_result (long long *dst_p, long long *src_p,
long long *res_p)
{
char *dst = (char *) dst_p;
char *src = (char *) src_p;
char *res = (char *) res_p;
int i;
for (i = 0; i < 8; i++)
if ((src[i] & 0x80) != 0)
res[i] = dst[i];
}
static void
do_maskmovq_test (long long *r)
{
int i;
long long ck;
int fail = 0;
/* Run the MMX tests */
for (i = 0; i < MMX_num_ops; i++)
{
r[0] = -1LL;
ck = -1LL;
test_maskmovq (&MMXops[i], &MMXops[i], r);
compute_correct_result (&MMXops[i], &MMXops[i], &ck);
if (*r != ck)
fail++;
}
if (fail != 0)
abort ();
}
static void
sse2_test (void)
{
char *buf;
long long *r;
size_t page_size = sysconf(_SC_PAGESIZE);
buf = mmap (0, 3 * page_size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (buf == MAP_FAILED)
{
perror ("mmap");
abort ();
}
if (mprotect (buf, page_size, PROT_NONE))
{
perror ("mprotect");
abort ();
}
if (mprotect (buf + 2 * page_size, page_size, PROT_NONE))
{
perror ("mprotect");
abort ();
}
r = (long long *) (buf + page_size);
do_maskmovq_test (r);
r = (long long *) (buf + page_size + 3);
do_maskmovq_test (r);
r = (long long *) (buf + page_size + 11);
do_maskmovq_test (r);
r = (long long *) (buf + 2 * page_size - 16);
do_maskmovq_test (r);
r = (long long *) (buf + 2 * page_size - 16 + 3);
do_maskmovq_test (r);
r = (long long *) (buf + 2 * page_size - 16 + 8);
do_maskmovq_test (r);
}
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