gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86: ASM fast memset()

Browse Source
This commit is contained in:
Balazs Gerofi
2017-07-03 10:12:46 +09:00
parent 201a7e2595
commit 2189c55d99
3 changed files with 26 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
lib/include/string.h
View File

@ -36,6 +36,10 @@ void *memset(void *s, int n, size_t l);
#define fast_memcpy memcpy
#endif
#ifdef ARCH_FAST_MEMSET
#define memset __inline_memset
#endif
extern int snprintf(char * buf, size_t size, const char *fmt, ...);
extern int sprintf(char * buf, const char *fmt, ...);
extern int sscanf(const char * buf, const char * fmt, ...);

3
lib/string.c
View File

@ -13,6 +13,7 @@
#include <kmalloc.h>
#include <string.h>
#include <memory.h>
#include <arch-string.h>
size_t strlen(const char *p)
{
@ -153,6 +154,7 @@ void *memcpy_long(void *dest, const void *src, size_t n)
return dest;
}
#ifndef ARCH_FAST_MEMSET
void *memset(void *s, int c, size_t n)
{
char *s_aligned = (void *)(((unsigned long)s + 7) & ~7);
@ -187,6 +189,7 @@ void *memset(void *s, int c, size_t n)
return s;
}
#endif
int memcmp(const void *s1, const void *s2, size_t n)
{