From 61d08a9ea3d5fd680213aa7a15fcda69ce11987d Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 17 Oct 2007 18:04:38 +0200 Subject: [PATCH] i386: Remove strrchr assembler implementation The constraints in the inline assembler implementation of i386 strrchr() were incorrect and break the build with recent gcc 4.3. Since there are only very few callers of strrchr() and none of them are performance relevant just remove the assembler implementation and use the C fallback instead. [ tglx: arch/x86 adaptation ] Cc: rguenther@suse.de Signed-off-by: Andi Kleen Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/lib/string_32.c | 20 -------------------- include/asm-x86/string_32.h | 3 --- 2 files changed, 23 deletions(-) diff --git a/arch/x86/lib/string_32.c b/arch/x86/lib/string_32.c index 2c773fe..c2c0504 100644 --- a/arch/x86/lib/string_32.c +++ b/arch/x86/lib/string_32.c @@ -160,26 +160,6 @@ char *strchr(const char * s, int c) EXPORT_SYMBOL(strchr); #endif -#ifdef __HAVE_ARCH_STRRCHR -char *strrchr(const char * s, int c) -{ - int d0, d1; - char * res; - asm volatile( "movb %%al,%%ah\n" - "1:\tlodsb\n\t" - "cmpb %%ah,%%al\n\t" - "jne 2f\n\t" - "leal -1(%%esi),%0\n" - "2:\ttestb %%al,%%al\n\t" - "jne 1b" - :"=g" (res), "=&S" (d0), "=&a" (d1) - :"0" (0),"1" (s),"2" (c) - :"memory"); - return res; -} -EXPORT_SYMBOL(strrchr); -#endif - #ifdef __HAVE_ARCH_STRLEN size_t strlen(const char * s) { diff --git a/include/asm-x86/string_32.h b/include/asm-x86/string_32.h index a9b6445..55bfa30 100644 --- a/include/asm-x86/string_32.h +++ b/include/asm-x86/string_32.h @@ -26,9 +26,6 @@ extern int strncmp(const char *cs, const char *ct, size_t count); #define __HAVE_ARCH_STRCHR extern char *strchr(const char *s, int c); -#define __HAVE_ARCH_STRRCHR -extern char *strrchr(const char *s, int c); - #define __HAVE_ARCH_STRLEN extern size_t strlen(const char *s); -- 2.7.4