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Fix bugs in x86-32 strcmp-sse4.S and strcmp-ssse3.S

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This commit is contained in:
H.J. Lu 2010-04-15 07:49:30 -07:00 committed by Ulrich Drepper
parent 94a27fabeb
commit 6cc2b8a6df
3 changed files with 43 additions and 11 deletions
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39
string/test-strncmp.c
View File

@ -1,5 +1,5 @@
/* Test and measure strncmp functions.
Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
Copyright (C) 1999, 2002, 2003, 2010 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
@ -51,8 +51,8 @@ stupid_strncmp (const char *s1, const char *s2, size_t n)
return ret;
}
static void
do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
static int
check_result (impl_t *impl, const char *s1, const char *s2, size_t n,
int exp_result)
{
int result = CALL (impl, s1, s2, n);
@ -63,9 +63,19 @@ do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
error (0, 0, "Wrong result in function %s %d %d", impl->name,
result, exp_result);
ret = 1;
return;
return -1;
}
return 0;
}
static void
do_one_test (impl_t *impl, const char *s1, const char *s2, size_t n,
int exp_result)
{
if (check_result (impl, s1, s2, n, exp_result) < 0)
return;
if (HP_TIMING_AVAIL)
{
hp_timing_t start __attribute ((unused));
@ -283,6 +293,25 @@ do_random_tests (void)
}
}
static void
check1 (void)
{
char *s1 = (char *)(buf1 + 0xb2c);
char *s2 = (char *)(buf1 + 0xfd8);
size_t i;
int exp_result;
strcpy(s1, "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrs");
strcpy(s2, "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkLMNOPQRSTUV");
for (i = 0; i < 80; i++)
{
exp_result = simple_strncmp (s1, s2, i);
FOR_EACH_IMPL (impl, 0)
check_result (impl, s1, s2, i, exp_result);
}
}
int
test_main (void)
{
@ -290,6 +319,8 @@ test_main (void)
test_init ();
check1 ();
printf ("%23s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);

4
sysdeps/i386/i686/multiarch/strcmp-sse4.S
View File

@ -223,8 +223,8 @@ L(crosspage):
inc %edx
cmp $15, %edx
jle L(crosspage)
add $16, %edi
add $16, %esi
add %edx, %edi
add %edx, %esi
jmp L(check_offset)
.p2align 4

11
sysdeps/i386/i686/multiarch/strcmp-ssse3.S
View File

@ -1484,17 +1484,18 @@ L(gobble_ashr_12):
sub $0xffff, %esi
jnz L(exit)
#ifdef USE_AS_STRNCMP
cmp $16, %ebp
lea -16(%ebp), %ebp
jbe L(more8byteseq)
#endif
add $16, %ecx
movdqa %xmm4, %xmm3
add $16, %edi
jg L(nibble_ashr_12)
#ifdef USE_AS_STRNCMP
cmp $16, %ebp
lea -16(%ebp), %ebp
jbe L(more8byteseq)
#endif
movdqa (%eax, %ecx), %xmm1
movdqa (%edx, %ecx), %xmm2
movdqa %xmm2, %xmm4