1 /* $OpenBSD: rindex.S,v 1.3 2005/08/07 11:30:38 espie Exp $ */ 2 /* 3 * Written by J.T. Conklin <jtc (at) netbsd.org>. 4 * Public domain. 5 */ 6 7 #include <machine/asm.h> 8 9 #ifdef STRRCHR 10 ENTRY(strrchr) 11 #else 12 ENTRY(rindex) 13 #endif 14 pushl %ebx 15 movl 8(%esp),%edx 16 movb 12(%esp),%cl 17 xorl %eax,%eax /* init pointer to null */ 18 .align 2,0x90 19 L1: 20 movb (%edx),%bl 21 cmpb %bl,%cl 22 jne L2 23 movl %edx,%eax 24 L2: 25 incl %edx 26 testb %bl,%bl /* null terminator??? */ 27 jnz L1 28 popl %ebx 29 ret 30
