refactor: vmm_set_map has option to ignore existed mapping.

[lunaix-os.git] / lunaix-os / libs / klibc / string / mem.c

diff --git a/lunaix-os/libs/klibc/string/mem.c b/lunaix-os/libs/klibc/string/mem.c
index 0b93a7d065f198ba18cba0c471e2b09990a61c7a..aeaca009510283b7b8b393d31c92deeaa3c551f2 100755 (executable)
--- a/lunaix-os/libs/klibc/string/mem.c
+++ b/lunaix-os/libs/klibc/string/mem.c
@@ -1,14 +1,14 @@
-#include <stdint.h>

 #include <klibc/string.h>
 #include <klibc/string.h>

+#include <stdint.h>

 
 void*
 memcpy(void* dest, const void* src, size_t num)
 {
 
 void*
 memcpy(void* dest, const void* src, size_t num)
 {

-    uint8_t* dest_ptr = (uint8_t*)dest;
-    const uint8_t* src_ptr = (const uint8_t*)src;
-    for (size_t i = 0; i < num; i++) {
-        *(dest_ptr + i) = *(src_ptr + i);
-    }
+    asm volatile("movl %1, %%edi\n"
+                 "rep movsb\n" ::"S"(src),
+                 "r"(dest),
+                 "c"(num)
+                 : "edi", "memory");

     return dest;
 }
 
     return dest;
 }
 


@@ -32,10 +32,11 @@ memmove(void* dest, const void* src, size_t num)
 void*
 memset(void* ptr, int value, size_t num)
 {
 void*
 memset(void* ptr, int value, size_t num)
 {

-    uint8_t* c_ptr = (uint8_t*)ptr;
-    for (size_t i = 0; i < num; i++) {
-        *(c_ptr + i) = (uint8_t)value;
-    }
+    asm volatile("movl %1, %%edi\n"
+                 "rep stosb\n" ::"c"(num),
+                 "r"(ptr),
+                 "a"(value)
+                 : "edi", "memory");

     return ptr;
 }
 
     return ptr;
 }