diff options
Diffstat (limited to 'sysdeps/i386/i586/memset.S')
| -rw-r--r-- | sysdeps/i386/i586/memset.S | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/sysdeps/i386/i586/memset.S b/sysdeps/i386/i586/memset.S index bc26501d10..3590ad1183 100644 --- a/sysdeps/i386/i586/memset.S +++ b/sysdeps/i386/i586/memset.S @@ -1,6 +1,6 @@ /* memset/bzero -- set memory area to CH/0 Highly optimized version for ix86, x>=5. - Copyright (C) 1996-2015 Free Software Foundation, Inc. + Copyright (C) 1996-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Torbjorn Granlund, <tege@matematik.su.se> @@ -21,13 +21,10 @@ #include <sysdep.h> #include "asm-syntax.h" -/* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */ -#define BZERO_P (defined memset) - #define PARMS 4+4 /* space for 1 saved reg */ #define RTN PARMS #define DEST RTN -#if BZERO_P +#ifdef USE_AS_BZERO # define LEN DEST+4 #else # define CHR DEST+4 @@ -35,7 +32,7 @@ #endif .text -#if defined PIC && IS_IN (libc) && !BZERO_P +#if defined SHARED && IS_IN (libc) && !defined USE_AS_BZERO ENTRY (__memset_chk) movl 12(%esp), %eax cmpl %eax, 16(%esp) @@ -50,7 +47,7 @@ ENTRY (memset) movl DEST(%esp), %edi cfi_rel_offset (edi, 0) movl LEN(%esp), %edx -#if BZERO_P +#ifdef USE_AS_BZERO xorl %eax, %eax /* we fill with 0 */ #else movb CHR(%esp), %al @@ -104,7 +101,7 @@ L(2): shrl $2, %ecx /* convert byte count to longword count */ rep stosb -#if !BZERO_P +#ifndef USE_AS_BZERO /* Load result (only if used as memset). */ movl DEST(%esp), %eax /* start address of destination is result */ #endif @@ -112,10 +109,13 @@ L(2): shrl $2, %ecx /* convert byte count to longword count */ cfi_adjust_cfa_offset (-4) cfi_restore (edi) -#if BZERO_P - ret -#else ret -#endif END (memset) libc_hidden_builtin_def (memset) + +#if defined SHARED && IS_IN (libc) && !defined __memset_chk \ + && !defined USE_AS_BZERO +strong_alias (__memset_chk, __memset_zero_constant_len_parameter) + .section .gnu.warning.__memset_zero_constant_len_parameter + .string "memset used with constant zero length parameter; this could be due to transposed parameters" +#endif |