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| author | Yinghai Lu <yinghailu@gmail.com> | 2006-04-03 20:38:34 +0000 |
|---|---|---|
| committer | Yinghai Lu <yinghailu@gmail.com> | 2006-04-03 20:38:34 +0000 |
| commit | 9a791dffeae2097aa0a18f645ce07acfed41b9bc (patch) | |
| tree | 2d0359536fe3c1a0c313440b6be4ed09397dade9 /src/include | |
| parent | ffb7d8a31ae899f611235cd0a7f3579d34cd8cde (diff) | |
| download | coreboot-9a791dffeae2097aa0a18f645ce07acfed41b9bc.tar.xz | |
new cache_as_ram support
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2232 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/cpu/x86/mem.h | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/src/include/cpu/x86/mem.h b/src/include/cpu/x86/mem.h index 4849ed289a..532fc79e0a 100644 --- a/src/include/cpu/x86/mem.h +++ b/src/include/cpu/x86/mem.h @@ -4,15 +4,13 @@ /* Optimized generic x86 assembly for clearing memory */ static inline void clear_memory(void *addr, unsigned long size) { - asm volatile( - "1: \n\t" - "movl %0, (%1)\n\t" - "addl $4, %1\n\t" - "subl $4, %2\n\t" - "jnz 1b\n\t" - : /* No outputs */ - : "a" (0), "D" (addr), "c" (size) - ); + asm volatile( + "cld \n\t" + "rep stosl\n\t" + : /* No outputs */ + : "a" (0), "D" (addr), "c" (size>>2) + ); + } #endif /* CPU_X86_MEM_H */ |