cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

libc.c (998B)

      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}