From b55e81b9f8cf0256bcfc548360aef642630c2919 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 11 May 2012 19:53:29 -0700 Subject: sparc32: Remove inline strncmp "optimization" for constant counts. Let the compiler do stuff like this. Signed-off-by: David S. Miller --- arch/sparc/include/asm/string_32.h | 63 +------------------------------------- arch/sparc/lib/ksyms.c | 5 --- arch/sparc/lib/strncmp_32.S | 3 +- 3 files changed, 2 insertions(+), 69 deletions(-) (limited to 'arch/sparc') diff --git a/arch/sparc/include/asm/string_32.h b/arch/sparc/include/asm/string_32.h index edf196e..12f6785 100644 --- a/arch/sparc/include/asm/string_32.h +++ b/arch/sparc/include/asm/string_32.h @@ -61,68 +61,7 @@ extern int memcmp(const void *,const void *,__kernel_size_t); extern __kernel_size_t strlen(const char *); #define __HAVE_ARCH_STRNCMP - -extern int __strncmp(const char *, const char *, __kernel_size_t); - -static inline int __constant_strncmp(const char *src, const char *dest, __kernel_size_t count) -{ - register int retval; - switch(count) { - case 0: return 0; - case 1: return (src[0] - dest[0]); - case 2: retval = (src[0] - dest[0]); - if(!retval && src[0]) - retval = (src[1] - dest[1]); - return retval; - case 3: retval = (src[0] - dest[0]); - if(!retval && src[0]) { - retval = (src[1] - dest[1]); - if(!retval && src[1]) - retval = (src[2] - dest[2]); - } - return retval; - case 4: retval = (src[0] - dest[0]); - if(!retval && src[0]) { - retval = (src[1] - dest[1]); - if(!retval && src[1]) { - retval = (src[2] - dest[2]); - if (!retval && src[2]) - retval = (src[3] - dest[3]); - } - } - return retval; - case 5: retval = (src[0] - dest[0]); - if(!retval && src[0]) { - retval = (src[1] - dest[1]); - if(!retval && src[1]) { - retval = (src[2] - dest[2]); - if (!retval && src[2]) { - retval = (src[3] - dest[3]); - if (!retval && src[3]) - retval = (src[4] - dest[4]); - } - } - } - return retval; - default: - retval = (src[0] - dest[0]); - if(!retval && src[0]) { - retval = (src[1] - dest[1]); - if(!retval && src[1]) { - retval = (src[2] - dest[2]); - if(!retval && src[2]) - retval = __strncmp(src+3,dest+3,count-3); - } - } - return retval; - } -} - -#undef strncmp -#define strncmp(__arg0, __arg1, __arg2) \ -(__builtin_constant_p(__arg2) ? \ - __constant_strncmp(__arg0, __arg1, __arg2) : \ - __strncmp(__arg0, __arg1, __arg2)) +extern int strncmp(const char *, const char *, __kernel_size_t); #endif /* !EXPORT_SYMTAB_STROPS */ diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c index f73c224..1bc8972 100644 --- a/arch/sparc/lib/ksyms.c +++ b/arch/sparc/lib/ksyms.c @@ -56,8 +56,6 @@ extern int __divdi3(int, int); extern void (*__copy_1page)(void *, const void *); extern void (*bzero_1page)(void *); -extern int __strncmp(const char *, const char *, __kernel_size_t); - extern void ___rw_read_enter(void); extern void ___rw_read_try(void); extern void ___rw_read_exit(void); @@ -81,9 +79,6 @@ EXPORT_SYMBOL(__copy_1page); EXPORT_SYMBOL(__memmove); EXPORT_SYMBOL(bzero_1page); -/* string functions */ -EXPORT_SYMBOL(__strncmp); - /* Moving data to/from/in userspace. */ EXPORT_SYMBOL(__copy_user); diff --git a/arch/sparc/lib/strncmp_32.S b/arch/sparc/lib/strncmp_32.S index 494ec66..1476f57 100644 --- a/arch/sparc/lib/strncmp_32.S +++ b/arch/sparc/lib/strncmp_32.S @@ -5,8 +5,7 @@ .text .align 4 - .global __strncmp, strncmp -__strncmp: + .global strncmp strncmp: mov %o0, %g3 mov 0, %o3 -- cgit v1.1