mirror of
https://github.com/pound-emu/ballistic.git
synced 2026-01-31 01:15:21 +01:00
c24f4f6e80
I realized that a fuzzer made in python is way slower than a fuzzer in C. So here you go. Signed-off-by: Ronald Caesar <github43132@proton.me>
73 lines
1.4 KiB
C
73 lines
1.4 KiB
C
#include "decoder.h"
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
#include <time.h>
|
|
|
|
static uint32_t rng_state = 0x87654321;
|
|
|
|
/*
|
|
* Seeding function to set the initial state.
|
|
*/
|
|
static void
|
|
fast_srand (uint32_t seed)
|
|
{
|
|
if (seed == 0)
|
|
{
|
|
seed = 0x87654321;
|
|
}
|
|
rng_state = seed;
|
|
}
|
|
/*
|
|
* Xorshift32 Algorithm
|
|
*/
|
|
static inline uint32_t
|
|
fast_rand (void)
|
|
{
|
|
uint32_t x = rng_state;
|
|
x ^= x << 13;
|
|
x ^= x >> 17;
|
|
x ^= x << 5;
|
|
rng_state = x;
|
|
return x;
|
|
}
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
printf("Starting Decoder Fuzzer Test...\n");
|
|
fast_srand((uint32_t)time(0));
|
|
|
|
int failed = 0;
|
|
for (size_t i = 0; i < 100000; ++i)
|
|
{
|
|
uint32_t random_instruction = fast_rand();
|
|
const bal_decoder_instruction_metadata_t *meta
|
|
= bal_decoder_arm64_decode(random_instruction);
|
|
|
|
if (NULL != meta)
|
|
{
|
|
if ((random_instruction & meta->mask) != meta->expected)
|
|
{
|
|
printf("[FAIL] %s, 0x%08x & 0x%08x != 0x%08x",
|
|
meta->name,
|
|
random_instruction,
|
|
meta->mask,
|
|
meta->expected);
|
|
++failed;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (failed > 0)
|
|
{
|
|
printf("FAILED %d tests. \n", failed);
|
|
return 1;
|
|
}
|
|
printf("All tests passed.\n");
|
|
return 0;
|
|
}
|