kolibrios-gitea/drivers/ddk/string/strncpy.S
Sergey Semyonov (Serge) 1402c59305 ddk: tiny libc and kernel imports library
git-svn-id: svn://kolibrios.org@1408 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-02-12 20:11:35 +00:00

29 lines
656 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.
#
.intel_syntax
.text
.globl _strncpy
.align 16
_strncpy:
push ebp
mov ebp, esp
push esi
push edi
mov ecx, [ebp+16] # Maximum length
call __strncpy # Common code
mov ecx, edx # Number of bytes not copied
rep
stosb # strncpy always copies n bytes by null padding
mov eax, [ebp+8] # Return s1
pop edi
pop esi
pop ebp
ret