[U-Boot-Users] [PATCH 2/2][MIPS] Remove inline asm string functions

Revised. Hope this applied.
Thanks,
--- We MIPS stop using inline string functions as other ARCHs do so, since the optimized inline asm versions are not small.
This change is triggered by a following MIPS build error: common/libcommon.a(exports.o)(.text+0xdc): In function `jumptable_init': common/exports.c:32: undefined reference to `strcmp' make: *** [u-boot] Error 1
Signed-off-by: Shinya Kuribayashi shinya.kuribayashi@necel.com ---
include/asm-mips/string.h | 124 ++++----------------------------------------- 1 files changed, 10 insertions(+), 114 deletions(-)
diff --git a/include/asm-mips/string.h b/include/asm-mips/string.h index 3f7c55e..c42ad82 100644 --- a/include/asm-mips/string.h +++ b/include/asm-mips/string.h @@ -10,126 +10,22 @@ #ifndef _ASM_STRING_H #define _ASM_STRING_H
- /* - * Most of the inline functions are rather naive implementations so I just - * didn't bother updating them for 64-bit ... + * We don't do inline string functions, since the + * optimised inline asm versions are not small. */ -#ifdef CONFIG_32BIT - -#ifndef IN_STRING_C - -#define __HAVE_ARCH_STRCPY -static __inline__ char *strcpy(char *__dest, __const__ char *__src) -{ - char *__xdest = __dest; - - __asm__ __volatile__( - ".set\tnoreorder\n\t" - ".set\tnoat\n" - "1:\tlbu\t$1,(%1)\n\t" - "addiu\t%1,1\n\t" - "sb\t$1,(%0)\n\t" - "bnez\t$1,1b\n\t" - "addiu\t%0,1\n\t" - ".set\tat\n\t" - ".set\treorder" - : "=r" (__dest), "=r" (__src) - : "0" (__dest), "1" (__src) - : "memory"); - - return __xdest; -} - -#define __HAVE_ARCH_STRNCPY -static __inline__ char *strncpy(char *__dest, __const__ char *__src, size_t __n) -{ - char *__xdest = __dest; - - if (__n == 0) - return __xdest; - - __asm__ __volatile__( - ".set\tnoreorder\n\t" - ".set\tnoat\n" - "1:\tlbu\t$1,(%1)\n\t" - "subu\t%2,1\n\t" - "sb\t$1,(%0)\n\t" - "beqz\t$1,2f\n\t" - "addiu\t%0,1\n\t" - "bnez\t%2,1b\n\t" - "addiu\t%1,1\n" - "2:\n\t" - ".set\tat\n\t" - ".set\treorder" - : "=r" (__dest), "=r" (__src), "=r" (__n) - : "0" (__dest), "1" (__src), "2" (__n) - : "memory"); - - return __xdest; -} - -#define __HAVE_ARCH_STRCMP -static __inline__ int strcmp(__const__ char *__cs, __const__ char *__ct) -{ - int __res; - - __asm__ __volatile__( - ".set\tnoreorder\n\t" - ".set\tnoat\n\t" - "lbu\t%2,(%0)\n" - "1:\tlbu\t$1,(%1)\n\t" - "addiu\t%0,1\n\t" - "bne\t$1,%2,2f\n\t" - "addiu\t%1,1\n\t" - "bnez\t%2,1b\n\t" - "lbu\t%2,(%0)\n\t" -#if defined(CONFIG_CPU_R3000) - "nop\n\t" -#endif - "move\t%2,$1\n" - "2:\tsubu\t%2,$1\n" - "3:\t.set\tat\n\t" - ".set\treorder" - : "=r" (__cs), "=r" (__ct), "=r" (__res) - : "0" (__cs), "1" (__ct)); - - return __res; -}
-#endif /* !defined(IN_STRING_C) */ +#undef __HAVE_ARCH_STRCPY +extern char *strcpy(char *__dest, __const__ char *__src);
-#define __HAVE_ARCH_STRNCMP -static __inline__ int -strncmp(__const__ char *__cs, __const__ char *__ct, size_t __count) -{ - int __res; +#undef __HAVE_ARCH_STRNCPY +extern char *strncpy(char *__dest, __const__ char *__src, size_t __n);
- __asm__ __volatile__( - ".set\tnoreorder\n\t" - ".set\tnoat\n" - "1:\tlbu\t%3,(%0)\n\t" - "beqz\t%2,2f\n\t" - "lbu\t$1,(%1)\n\t" - "subu\t%2,1\n\t" - "bne\t$1,%3,3f\n\t" - "addiu\t%0,1\n\t" - "bnez\t%3,1b\n\t" - "addiu\t%1,1\n" - "2:\n\t" -#if defined(CONFIG_CPU_R3000) - "nop\n\t" -#endif - "move\t%3,$1\n" - "3:\tsubu\t%3,$1\n\t" - ".set\tat\n\t" - ".set\treorder" - : "=r" (__cs), "=r" (__ct), "=r" (__count), "=r" (__res) - : "0" (__cs), "1" (__ct), "2" (__count)); +#undef __HAVE_ARCH_STRCMP +extern int strcmp(__const__ char *__cs, __const__ char *__ct);
- return __res; -} -#endif /* CONFIG_32BIT */ +#undef __HAVE_ARCH_STRNCMP +extern int strncmp(__const__ char *__cs, __const__ char *__ct, size_t __count);
#undef __HAVE_ARCH_MEMSET extern void *memset(void *__s, int __c, size_t __count);

In message 46D7AA1F.7090901@necel.com you wrote:
Revised. Hope this applied.
Thanks,
We MIPS stop using inline string functions as other ARCHs do so, since the optimized inline asm versions are not small.
This change is triggered by a following MIPS build error: common/libcommon.a(exports.o)(.text+0xdc): In function `jumptable_init': common/exports.c:32: undefined reference to `strcmp' make: *** [u-boot] Error 1
Signed-off-by: Shinya Kuribayashi shinya.kuribayashi@necel.com
Applied, thanks.
participants (2)
-
Shinya Kuribayashi
-
Wolfgang Denk