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Fix handling of tail bytes of buffer in SSE2/SSSE3 x86-64 version strn{,case}cmp

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This commit is contained in:
Ulrich Drepper
2010-10-03 22:10:30 -04:00
parent cf7a1eb81d
commit 45db99c7d0
4 changed files with 133 additions and 53 deletions
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144
string/stratcliff.c
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@ -1,5 +1,6 @@
/* Test for string function add boundaries of usable memory.
Copyright (C) 1996,1997,1999-2003,2007, 2009 Free Software Foundation, Inc.
Copyright (C) 1996,1997,1999-2003,2007,2009,2010
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
@ -47,6 +48,8 @@
# define MEMCPY memcpy
# define MEMPCPY mempcpy
# define MEMCHR memchr
# define STRCMP strcmp
# define STRNCMP strncmp
#endif
@ -70,12 +73,12 @@ do_test (void)
if (adr == MAP_FAILED || dest == MAP_FAILED)
{
if (errno == ENOSYS)
puts ("No test, mmap not available.");
puts ("No test, mmap not available.");
else
{
printf ("mmap failed: %m");
result = 1;
}
{
printf ("mmap failed: %m");
result = 1;
}
}
else
{
@ -93,8 +96,8 @@ do_test (void)
/* strlen/wcslen test */
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
@ -107,12 +110,12 @@ do_test (void)
adr[inner] = L('T');
}
}
}
/* strnlen/wcsnlen test */
for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
@ -126,9 +129,9 @@ do_test (void)
adr[inner] = L('T');
}
}
}
for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
{
{
for (inner = MAX (outer, nchars - 64); inner <= nchars; ++inner)
{
if (STRNLEN (&adr[outer], inner - outer)
@ -139,11 +142,11 @@ do_test (void)
result = 1;
}
}
}
}
/* strchr/wcschr test */
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
{
for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
{
for (inner = middle; inner < nchars; ++inner)
@ -167,7 +170,7 @@ do_test (void)
adr[middle] = L('T');
}
}
}
}
/* Special test. */
adr[nchars - 1] = L('\0');
@ -180,7 +183,7 @@ do_test (void)
/* strrchr/wcsrchr test */
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
{
for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
{
for (inner = middle; inner < nchars; ++inner)
@ -204,11 +207,11 @@ do_test (void)
adr[middle] = L('T');
}
}
}
}
/* memchr test */
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
{
for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
{
adr[middle] = L('V');
@ -224,9 +227,9 @@ do_test (void)
adr[middle] = L('T');
}
}
}
for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)
{
{
CHAR *cp = MEMCHR (&adr[outer], L('V'), nchars - outer);
if (cp != NULL)
@ -235,13 +238,13 @@ do_test (void)
STRINGIFY (MEMCHR), outer);
result = 1;
}
}
}
/* This function only exists for single-byte characters. */
#ifndef WCSTEST
/* rawmemchr test */
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
{
for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
{
adr[middle] = L('V');
@ -257,13 +260,13 @@ do_test (void)
adr[middle] = L('T');
}
}
}
#endif
/* strcpy/wcscpy test */
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
@ -277,7 +280,74 @@ do_test (void)
adr[inner] = L('T');
}
}
}
/* strcmp/wcscmp tests */
for (outer = 1; outer < 32; ++outer)
for (middle = 0; middle < 16; ++middle)
{
MEMSET (adr + middle, L('T'), 256);
adr[256] = L('\0');
MEMSET (dest + nchars - outer, L('T'), outer - 1);
dest[nchars - 1] = L('\0');
if (STRCMP (adr + middle, dest + nchars - outer) <= 0)
{
printf ("%s 1 flunked for outer = %d, middle = %d\n",
STRINGIFY (STRCMP), outer, middle);
result = 1;
}
if (STRCMP (dest + nchars - outer, adr + middle) >= 0)
{
printf ("%s 2 flunked for outer = %d, middle = %d\n",
STRINGIFY (STRCMP), outer, middle);
result = 1;
}
}
/* strncmp/wcsncmp tests */
for (outer = 1; outer < 32; ++outer)
for (middle = 0; middle < 16; ++middle)
{
MEMSET (adr + middle, L('T'), 256);
adr[256] = L('\0');
MEMSET (dest + nchars - outer, L('T'), outer - 1);
dest[nchars - 1] = L('U');
for (inner = 0; inner < outer; ++inner)
{
if (STRNCMP (adr + middle, dest + nchars - outer, inner) != 0)
{
printf ("%s 1 flunked for outer = %d, middle = %d, "
"inner = %d\n",
STRINGIFY (STRNCMP), outer, middle, inner);
result = 1;
}
if (STRNCMP (dest + nchars - outer, adr + middle, inner) != 0)
{
printf ("%s 2 flunked for outer = %d, middle = %d, "
"inner = %d\n",
STRINGIFY (STRNCMP), outer, middle, inner);
result = 1;
}
}
if (STRNCMP (adr + middle, dest + nchars - outer, outer) >= 0)
{
printf ("%s 1 flunked for outer = %d, middle = %d, full\n",
STRINGIFY (STRNCMP), outer, middle);
result = 1;
}
if (STRNCMP (dest + nchars - outer, adr + middle, outer) <= 0)
{
printf ("%s 2 flunked for outer = %d, middle = %d, full\n",
STRINGIFY (STRNCMP), outer, middle);
result = 1;
}
}
/* strncpy/wcsncpy tests */
adr[nchars - 1] = L('T');
@ -295,12 +365,12 @@ do_test (void)
result = 1;
}
}
}
}
adr[nchars - 1] = L('\0');
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
size_t len;
@ -334,12 +404,12 @@ do_test (void)
adr[inner] = L('T');
}
}
}
/* stpcpy/wcpcpy test */
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
for (inner = MAX (outer, nchars - 64); inner < nchars; ++inner)
{
adr[inner] = L('\0');
@ -352,7 +422,7 @@ do_test (void)
adr[inner] = L('T');
}
}
}
/* stpncpy/wcpncpy test */
adr[nchars - 1] = L('T');
@ -374,8 +444,8 @@ do_test (void)
adr[nchars - 1] = L('\0');
for (outer = nchars - 1; outer >= MAX (0, nchars - 128); --outer)
{
for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
{
for (middle = MAX (outer, nchars - 64); middle < nchars; ++middle)
{
adr[middle] = L('\0');
@ -393,7 +463,7 @@ do_test (void)
adr[middle] = L('T');
}
}
}
/* memcpy/wmemcpy test */
for (outer = nchars; outer >= MAX (0, nchars - 128); --outer)