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x86: Add missing IS_IN (libc) check to strcspn-sse4.c

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Was missing to for the multiarch build rtld-strcspn-sse4.os was
being built and exporting symbols:

build/glibc/string/rtld-strcspn-sse4.os:
                 U ___m128i_shift_right
                 U __strcspn_generic
0000000000000000 T __strcspn_sse42
                 U strlen

build/glibc/string/rtld-varshift.os:
0000000000000000 R ___m128i_shift_right

Introduced in:

commit 06e51c8f3d
Author: H.J. Lu <hongjiu.lu@intel.com>
Date:   Fri Jul 3 02:48:56 2009 -0700

    Add SSE4.2 support for strcspn, strpbrk, and strspn on x86-64.
This commit is contained in:
Noah Goldstein 2022-06-29 18:56:17 -07:00
parent 8cfbbbcdf9
commit 0aa294fb88
2 changed files with 25 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
sysdeps/x86_64/multiarch/strcspn-sse4.c
View File

@ -16,9 +16,11 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <nmmintrin.h>
#include <string.h>
#include "varshift.h"
#if IS_IN (libc)
# include <nmmintrin.h>
# include <string.h>
# include "varshift.h"
/* We use 0x2:
_SIDD_SBYTE_OPS
@ -52,31 +54,31 @@
when either CFlag or ZFlag is 1. If CFlag == 1, ECX has the offset
X for case 1. */
#ifndef STRCSPN_GENERIC
# define STRCSPN_GENERIC __strcspn_generic
# define STRCSPN_SSE42 __strcspn_sse42
#endif
# ifndef STRCSPN_GENERIC
# define STRCSPN_GENERIC __strcspn_generic
# define STRCSPN_SSE42 __strcspn_sse42
# endif
#ifdef USE_AS_STRPBRK
# define RETURN(val1, val2) return val1
#else
# define RETURN(val1, val2) return val2
#endif
# ifdef USE_AS_STRPBRK
# define RETURN(val1, val2) return val1
# else
# define RETURN(val1, val2) return val2
# endif
extern
#ifdef USE_AS_STRPBRK
# ifdef USE_AS_STRPBRK
char *
#else
# else
size_t
#endif
# endif
STRCSPN_GENERIC (const char *, const char *) attribute_hidden;
#ifdef USE_AS_STRPBRK
# ifdef USE_AS_STRPBRK
char *
#else
# else
size_t
#endif
# endif
__attribute__ ((section (".text.sse4.2")))
STRCSPN_SSE42 (const char *s, const char *a)
{
@ -161,3 +163,4 @@ start_loop:
aligned += 16;
}
}
#endif

5
sysdeps/x86_64/multiarch/varshift.c
View File

@ -16,7 +16,8 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <stdint.h>
#if IS_IN (libc)
# include <stdint.h>
const int8_t ___m128i_shift_right[31] attribute_hidden
__attribute__((aligned(32))) =
@ -24,3 +25,5 @@ const int8_t ___m128i_shift_right[31] attribute_hidden
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
#endif