ia64/xen-unstable
changeset 16450:5e8e82e80f3b
Fix non-optimized compilation of Xen's memcmp
Even when using __builtin_memcmp, gcc may emit external references to
memcmp (when not optimizing for instance), so this #define does not
always provide a completely suitable memcmp().
Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Even when using __builtin_memcmp, gcc may emit external references to
memcmp (when not optimizing for instance), so this #define does not
always provide a completely suitable memcmp().
Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
| author | Keir Fraser <keir.fraser@citrix.com> |
|---|---|
| date | Sat Nov 24 13:37:26 2007 +0000 (2007-11-24) |
| parents | 96409cebd74b |
| children | 483329e219c9 |
| files | xen/common/string.c xen/include/asm-x86/string.h |
line diff
1.1 --- a/xen/common/string.c Sat Nov 24 13:31:39 2007 +0000 1.2 +++ b/xen/common/string.c Sat Nov 24 13:37:26 2007 +0000 1.3 @@ -370,6 +370,7 @@ void * memmove(void * dest,const void *s 1.4 #endif 1.5 1.6 #ifndef __HAVE_ARCH_MEMCMP 1.7 +#undef memcmp 1.8 /** 1.9 * memcmp - Compare two areas of memory 1.10 * @cs: One area of memory
2.1 --- a/xen/include/asm-x86/string.h Sat Nov 24 13:31:39 2007 +0000 2.2 +++ b/xen/include/asm-x86/string.h Sat Nov 24 13:37:26 2007 +0000 2.3 @@ -109,7 +109,8 @@ void *__memcpy(void *t, const void *f, s 2.4 #define __HAVE_ARCH_MEMMOVE 2.5 extern void *memmove(void *dest, const void *src, size_t n); 2.6 2.7 -#define __HAVE_ARCH_MEMCMP 2.8 +/* Some versions of gcc emit references to memcmp despite this macro defn. */ 2.9 +/*#define __HAVE_ARCH_MEMCMP*/ 2.10 #define memcmp __builtin_memcmp 2.11 2.12 static inline void *__memset_generic(void *s, char c, size_t count)