LXR qemu/pc-bios/vof/libc.c

   1#include "vof.h"
   2
   3int strlen(const char *s)
   4{
   5    int len = 0;
   6
   7    while (*s != 0) {
   8        len += 1;
   9        s += 1;
  10    }
  11
  12    return len;
  13}
  14
  15int strcmp(const char *s1, const char *s2)
  16{
  17    while (*s1 != 0 && *s2 != 0) {
  18        if (*s1 != *s2) {
  19            break;
  20        }
  21        s1 += 1;
  22        s2 += 1;
  23    }
  24
  25    return *s1 - *s2;
  26}
  27
  28void *memcpy(void *dest, const void *src, size_t n)
  29{
  30    char *cdest;
  31    const char *csrc = src;
  32
  33    cdest = dest;
  34    while (n-- > 0) {
  35        *cdest++ = *csrc++;
  36    }
  37
  38    return dest;
  39}
  40
  41int memcmp(const void *ptr1, const void *ptr2, size_t n)
  42{
  43    const unsigned char *p1 = ptr1;
  44    const unsigned char *p2 = ptr2;
  45
  46    while (n-- > 0) {
  47        if (*p1 != *p2) {
  48            return *p1 - *p2;
  49        }
  50        p1 += 1;
  51        p2 += 1;
  52    }
  53
  54    return 0;
  55}
  56
  57void *memset(void *dest, int c, size_t size)
  58{
  59    unsigned char *d = (unsigned char *)dest;
  60
  61    while (size-- > 0) {
  62        *d++ = (unsigned char)c;
  63    }
  64
  65    return dest;
  66}
  67