currsos/src/clib.c

90 lines
1.5 KiB
C

#include "clib.h"
#include "print.h"
#include "intr.h"
void
mem_cpy(void *src, void *dst, uint64 size)
{
char *cSrc = (char *) src;
char *cDst = (char *) dst;
while (size--)
{
*(cDst++) = *(cSrc++);
}
}
void
mem_set(void *src, uint8 val, uint64 size)
{
while (size--)
{
*(uint8 *) src = val;
src = (void *) ((uintptr) src + 1);
}
}
void
mem_mv(void *src, void *dst, uint64 size)
{
if (src >= dst)
{
mem_cpy(src, dst, size);
return;
}
src = (void *) ((uintptr) src + size - 1);
dst = (void *) ((uintptr) dst + size - 1);
while (size--)
{
*(char *) dst = *(char *) src;
dst = (void *) ((uintptr) dst - 1);
src = (void *) ((uintptr) src - 1);
}
}
uint64
str_len(char const *str)
{
uint64 length = 0;
while (*str != 0)
{
str++;
length++;
}
return length;
}
uint64
str_cmp(char const *str1, char const *str2)
{
uint64 length = str_len(str1);
if (length != str_len(str2))
{
return 0;
}
while (length--)
{
if (*(str1 + length) != *(str2 + length))
{
return 0;
}
}
return 1;
}
void
poor_sleep(uint32 dat)
{
for(uint32 i = 0; i < dat; i++)
{
}
}
void kassert_ex(const char *expr_str, const char *file, int32 line, int32 expr)
{
if (!expr)
{
kprintf("Assertion \"%s\" failed at %s:%d.\n", expr_str, file, line);
stop_cpu();
}
}