ChangeSet 1.1684, 2005/06/06 16:17:08+01:00, kaf24@xxxxxxxxxxxxxxxxxxxx
Remove strrchr/strnlen/memscan from x86-specific string.h. They are not
used so not worth optimising (strnlen is used only in vsprintf which is
not performance critical).
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
string.h | 50 --------------------------------------------------
1 files changed, 50 deletions(-)
diff -Nru a/xen/include/asm-x86/string.h b/xen/include/asm-x86/string.h
--- a/xen/include/asm-x86/string.h 2005-06-06 12:01:30 -04:00
+++ b/xen/include/asm-x86/string.h 2005-06-06 12:01:30 -04:00
@@ -136,23 +136,6 @@
return __res;
}
-#define __HAVE_ARCH_STRRCHR
-static inline char *strrchr(const char *s, int c)
-{
- long d0, d1;
- register char *__res;
- __asm__ __volatile__ (
- " mov %%al,%%ah \n"
- "1: lodsb \n"
- " cmp %%ah,%%al \n"
- " jne 2f \n"
- " lea -1(%1),%0 \n"
- "2: test %%al,%%al \n"
- " jne 1b \n"
- : "=g" (__res), "=&S" (d0), "=&a" (d1) : "0" (0), "1" (s), "2" (c) );
- return __res;
-}
-
#define __HAVE_ARCH_STRLEN
static inline size_t strlen(const char *s)
{
@@ -321,24 +304,6 @@
return s;
}
-#define __HAVE_ARCH_STRNLEN
-static inline size_t strnlen(const char *s, size_t count)
-{
- long d0;
- register int __res;
- __asm__ __volatile__ (
- " jmp 2f \n"
- "1: cmpb $0,(%3) \n"
- " je 3f \n"
- " inc %3 \n"
- "2: dec %1 \n"
- " jns 1b \n"
- "3: subl %2,%0 \n"
- : "=a" (__res), "=&d" (d0)
- : "c" ((int)(long)s), "0" (s), "1" (count) );
- return __res;
-}
-
/*
* This looks horribly ugly, but the compiler can optimize it totally,
* as we by now know that both pattern and count is constant..
@@ -426,20 +391,5 @@
(__builtin_constant_p(c) ? \
__constant_c_x_memset((s),(MEMSET_PATTERN_MUL*(unsigned char)(c)),(count)) : \
__var_x_memset((s),(c),(count)))
-
-#define __HAVE_ARCH_MEMSCAN
-static inline void *memscan(void *addr, int c, size_t size)
-{
- if ( size == 0 )
- return addr;
- __asm__ (
- " repnz; scasb \n"
- " jnz 1f \n"
- " dec %0 \n"
- "1: \n"
- : "=D" (addr), "=c" (size)
- : "0" (addr), "1" (size), "a" (c) );
- return addr;
-}
#endif /* __X86_STRING_H__ */
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