111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
|
#include <stdio.h>
|
||
|
|
int print_hash_value = 1;
|
||
|
|
static void platform_main_begin(void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
static unsigned crc32_tab[256];
|
||
|
|
static unsigned crc32_context = 0xFFFFFFFFUL;
|
||
|
|
static void
|
||
|
|
crc32_gentab (void)
|
||
|
|
{
|
||
|
|
unsigned crc;
|
||
|
|
unsigned poly = 0xEDB88320UL;
|
||
|
|
int i, j;
|
||
|
|
for (i = 0; i < 256; i++) {
|
||
|
|
crc = i;
|
||
|
|
for (j = 8; j > 0; j--) {
|
||
|
|
if (crc & 1) {
|
||
|
|
crc = (crc >> 1) ^ poly;
|
||
|
|
} else {
|
||
|
|
crc >>= 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
crc32_tab[i] = crc;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
static void
|
||
|
|
crc32_byte (unsigned char b) {
|
||
|
|
crc32_context =
|
||
|
|
((crc32_context >> 8) & 0x00FFFFFF) ^
|
||
|
|
crc32_tab[(crc32_context ^ b) & 0xFF];
|
||
|
|
}
|
||
|
|
extern int strcmp ( char *, char *);
|
||
|
|
static void
|
||
|
|
crc32_8bytes (unsigned val)
|
||
|
|
{
|
||
|
|
crc32_byte ((val>>0) & 0xff);
|
||
|
|
crc32_byte ((val>>8) & 0xff);
|
||
|
|
crc32_byte ((val>>16) & 0xff);
|
||
|
|
crc32_byte ((val>>24) & 0xff);
|
||
|
|
}
|
||
|
|
static void
|
||
|
|
transparent_crc (unsigned val, char* vname, int flag)
|
||
|
|
{
|
||
|
|
crc32_8bytes(val);
|
||
|
|
if (flag) {
|
||
|
|
printf("...checksum after hashing %s : %X\n", vname, crc32_context ^ 0xFFFFFFFFU);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
static void
|
||
|
|
platform_main_end (int x, int flag)
|
||
|
|
{
|
||
|
|
if (!flag) printf ("checksum = %x\n", x);
|
||
|
|
}
|
||
|
|
static long __undefined;
|
||
|
|
void csmith_compute_hash(void);
|
||
|
|
void step_hash(int stmt_id);
|
||
|
|
static int g_3[10][3] = {{0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}, {0xFD5464B5L, 0L, 0xFD5464B5L}};
|
||
|
|
static unsigned g_7[3] = {1UL, 1UL, 1UL};
|
||
|
|
static int func_1(void);
|
||
|
|
static int func_1(void)
|
||
|
|
{
|
||
|
|
int *l_2 = &g_3[4][2];
|
||
|
|
int *l_4 = &g_3[4][2];
|
||
|
|
int *l_5[6][6] = {{&g_3[8][1], &g_3[4][2], &g_3[0][1], &g_3[9][1], (void*)0, &g_3[9][1]}, {&g_3[8][1], &g_3[4][2], &g_3[0][1], &g_3[9][1], (void*)0, &g_3[9][1]}, {&g_3[8][1], &g_3[4][2], &g_3[0][1], &g_3[9][1], (void*)0, &g_3[9][1]}, {&g_3[8][1], &g_3[4][2], &g_3[0][1], &g_3[9][1], (void*)0, &g_3[9][1]}, {&g_3[8][1], &g_3[4][2], &g_3[0][1], &g_3[9][1], (void*)0, &g_3[9][1]}, {&g_3[8][1], &g_3[4][2], &g_3[0][1], &g_3[9][1], (void*)0, &g_3[9][1]}};
|
||
|
|
int l_6 = 0x2B013A58L;
|
||
|
|
int i, j;
|
||
|
|
step_hash(1);
|
||
|
|
g_7[1]++;
|
||
|
|
step_hash(2);
|
||
|
|
return (*l_4);
|
||
|
|
}
|
||
|
|
void csmith_compute_hash(void)
|
||
|
|
{
|
||
|
|
int i, j;
|
||
|
|
for (i = 0; i < 10; i++)
|
||
|
|
{
|
||
|
|
for (j = 0; j < 3; j++)
|
||
|
|
{
|
||
|
|
transparent_crc(g_3[i][j], "g_3[i][j]", print_hash_value);
|
||
|
|
if (print_hash_value) printf("index = [%d][%d]\n", i, j);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
for (i = 0; i < 3; i++)
|
||
|
|
{
|
||
|
|
transparent_crc(g_7[i], "g_7[i]", print_hash_value);
|
||
|
|
if (print_hash_value) printf("index = [%d]\n", i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
void step_hash(int stmt_id)
|
||
|
|
{
|
||
|
|
int i = 0;
|
||
|
|
csmith_compute_hash();
|
||
|
|
printf("before stmt(%d): checksum = %X\n", stmt_id, crc32_context ^ 0xFFFFFFFFUL);
|
||
|
|
crc32_context = 0xFFFFFFFFUL;
|
||
|
|
for (i = 0; i < 256; i++) {
|
||
|
|
crc32_tab[i] = 0;
|
||
|
|
}
|
||
|
|
crc32_gentab();
|
||
|
|
}
|
||
|
|
int main (void)
|
||
|
|
{
|
||
|
|
int i, j;
|
||
|
|
int print_hash_value = 0;
|
||
|
|
platform_main_begin();
|
||
|
|
crc32_gentab();
|
||
|
|
func_1();
|
||
|
|
csmith_compute_hash();
|
||
|
|
platform_main_end(crc32_context ^ 0xFFFFFFFFUL, print_hash_value);
|
||
|
|
return 0;
|
||
|
|
}
|