minix/lib/libc/arch/i386/string/strncpy.S
Arun Thomas 9a21d1a2fd Macros for symbols used in both ASM and C
-The macros take care of prepending the leading underscore when
 necessary.
2010-08-17 16:44:07 +00:00

23 lines
516 B
ArmAsm

/* strncpy() Author: Kees J. Bot */
/* 1 Jan 1994 */
/* char *strncpy(char *s1, const char *s2, size_t n) */
/* Copy string s2 to s1. */
/* */
#include <machine/asm.h>
ENTRY(strncpy)
push %ebp
movl %esp, %ebp
push %esi
push %edi
movl 16(%ebp), %ecx /* Maximum length */
call _C_LABEL(_strncpy) /* Common code */
movl %edx, %ecx /* Number of bytes not copied */
rep stosb /* strncpy always copies n bytes by null padding */
movl 8(%ebp), %eax /* Return s1 */
pop %edi
pop %esi
pop %ebp
ret