| 0,0 → 1,27 |
|---|
| /* bcmp() Author: Kees J. Bot */ |
| /* 2 Jan 1994 */ |
| |
| /* int bcmp(const void *s1, const void *s2, size_t n) */ |
| /* Compare two chunks of memory. */ |
| /* This is a BSD routine that escaped from the kernel. Don't use. */ |
| /* (Alas it is not without some use, it reports the number of bytes */ |
| /* after the bytes that are equal. So it can't be simply replaced.) */ |
| /* */ |
| #include "asm.h" |
| |
| ENTRY(bcmp) |
| push %ebp |
| movl %esp, %ebp |
| push 16(%ebp) |
| push 12(%ebp) |
| push 8(%ebp) |
| call _C_LABEL(memcmp) /* Let memcmp do the work */ |
| testl %eax, %eax |
| je equal |
| subl 8(%ebp), %edx /* Memcmp was nice enough to leave "esi" in edx */ |
| decl %edx /* Number of bytes that are equal */ |
| movl 16(%ebp), %eax |
| subl %edx, %eax /* Number of bytes that are unequal */ |
| equal: |
| leave |
| ret |