diff --git a/src/common/bench/bench.c b/src/common/bench/bench.c
index 524032d..13e426c 100644
--- a/src/common/bench/bench.c
+++ b/src/common/bench/bench.c
@@ -67,3 +67,14 @@ uint32_t checksum(void *start, void *end) {
   hash += hash << 5;
   return hash;
 }
+
+static uint32_t seed = 1;
+
+void bench_srand(uint32_t _seed) {
+  seed = _seed & 0x7fff;
+}
+
+uint32_t bench_rand() {
+  seed = (seed * (uint32_t)214013L + (uint32_t)2531011L);
+  return (seed >> 16) & 0x7fff;
+}
diff --git a/src/common/bench/include/bench.h b/src/common/bench/include/bench.h
index b96a8eb..9028a60 100644
--- a/src/common/bench/include/bench.h
+++ b/src/common/bench/include/bench.h
@@ -11,6 +11,8 @@ extern "C" {
 uint64_t uptime();
 char *format_time(uint64_t us);
 uint32_t checksum(void *start, void *end);
+void bench_srand(uint32_t _seed);
+uint32_t bench_rand();
 
 typedef struct {
   void *sub_config;
diff --git a/src/gemm/configs/ref-config.c b/src/gemm/configs/ref-config.c
index 14987ff..fe17f25 100644
--- a/src/gemm/configs/ref-config.c
+++ b/src/gemm/configs/ref-config.c
@@ -1,3 +1,4 @@
 #include <gemm.h>
 
-bench_gemm_config config = {110, 110, 110};
+bench_gemm_config config = {.m = 110, .n = 110, .k = 110, .checksum = 0x503d0fe9};
+
diff --git a/src/gemm/configs/test-config.c b/src/gemm/configs/test-config.c
index e1d725c..cbcf50b 100644
--- a/src/gemm/configs/test-config.c
+++ b/src/gemm/configs/test-config.c
@@ -1,3 +1,3 @@
 #include <gemm.h>
 
-bench_gemm_config config = {50, 50, 50};
+bench_gemm_config config = {.m = 50, .n = 50, .k = 50, .checksum = 0x53c1fb28};
diff --git a/src/gemm/configs/train-config.c b/src/gemm/configs/train-config.c
index b20fa67..17b3714 100644
--- a/src/gemm/configs/train-config.c
+++ b/src/gemm/configs/train-config.c
@@ -1,3 +1,3 @@
 #include <gemm.h>
 
-bench_gemm_config config = {40, 40, 40};
+bench_gemm_config config = {.m = 40, .n = 40, .k = 40, .checksum = 0x1efebe93};
diff --git a/src/gemm/gemm.c b/src/gemm/gemm.c
index d7c6a4d..a8432c4 100644
--- a/src/gemm/gemm.c
+++ b/src/gemm/gemm.c
@@ -15,7 +15,7 @@ void serial_init(int m, int n, double *a, int lda) {
 void random_init(int m, int n, double *a, int lda) {
   for (int j = 0; j < n; j++) {
     for (int i = 0; i < m; i++)
-      A(i, j) = 2.0 * rand() - 1.0;
+      A(i, j) = 2.0 * bench_rand() - 1.0;
   }
 }
 
@@ -41,8 +41,9 @@ int main() {
   memset(C, 0, m * n * sizeof(double));
 
   uint64_t start_time, end_time;
-  srand(1556);
+  bench_srand(1556);
 
+  //Because we init A and B randomly, the checksum of C will be different.
   random_init(m, k, A, m);
   random_init(k, n, B, k);
 
@@ -50,10 +51,12 @@ int main() {
   matmul(m, n, k, A, m, B, k, C, m);
   end_time = uptime();
 
+
   bench_free(A);
   bench_free(B);
   bench_free(C);
 
+
   BENCH_LOG(INFO, "OpenPerf time: %s", format_time(end_time - start_time));
   return 0;
 }
diff --git a/src/gemm/include/gemm.h b/src/gemm/include/gemm.h
index 6ace54b..795b34f 100644
--- a/src/gemm/include/gemm.h
+++ b/src/gemm/include/gemm.h
@@ -10,6 +10,7 @@ typedef struct {
   uint32_t m;
   uint32_t n;
   uint32_t k;
+  uint64_t checksum;
 } bench_gemm_config;
 
 void AddDot4x4(int, double *, int, double *, int, double *, int);
diff --git a/src/tcc/configs/ref-config.c b/src/tcc/configs/ref-config.c
index e69de29..e8277d8 100644
--- a/src/tcc/configs/ref-config.c
+++ b/src/tcc/configs/ref-config.c
@@ -0,0 +1,18 @@
+#include "../config.h"
+#include <fs.h>
+
+Finfo file_table[] = {
+  {"/share/trm.c", 269, 0, NULL, NULL},
+  {"/share/trap.h", 110, 269, NULL, NULL},
+  {"/share/ref.c", 1844, 379, NULL, NULL},
+  {"/share/ref", 21332, 2223, NULL, NULL}
+};
+
+int tcc_argc1 = 10;
+char *tcc_argv1[] = {
+  "./tcc", "/share/trm.c", "/share/ref.c", "-ffreestanding",
+  "-nostdlib", "-o", "/share/ref", "-Wl,-Ttext=0x80000000",
+  "-O2", "-static"
+};
+
+bench_tcc_config config = {.file_count = 4};
diff --git a/src/tcc/input/ref b/src/tcc/input/ref
new file mode 100755
index 0000000..f8cc33e
Binary files /dev/null and b/src/tcc/input/ref differ
diff --git a/src/tcc/input/ref.c b/src/tcc/input/ref.c
new file mode 100644
index 0000000..6613270
--- /dev/null
+++ b/src/tcc/input/ref.c
@@ -0,0 +1,87 @@
+#include "trap.h"
+
+typedef unsigned int uint32_t;
+typedef unsigned char uint8_t;
+typedef uint32_t size_t;
+#define NULL 0
+#define LENGTH(x) sizeof(x) / sizeof(x[0])
+
+void *memset(void *s, int c, size_t n) {
+  char *p = NULL;
+  if (s == NULL)
+    return s;
+
+  p = (char *)s;
+  while (n > 0) {
+    *(p++) = c;
+    n--;
+  }
+  return s;
+}
+
+int add(int a, int b) { return a + b; }
+int sub(int a, int b) { return a - b; }
+int mul(int a, int b) { return a * b; }
+int div_safe(int a, int b) { return b != 0 ? a / b : 0; }
+
+int test_data[] = {0, 1, 2, 3, 0x7fffffff, 0x80000000, 0x80000001, 0xffffffff};
+int ans_data[1000] = {0};
+
+#define NR_DATA 1000
+
+int add_main() {
+  int i, j;
+  for (i = 0; i < NR_DATA; i++) {
+    for (j = 0; j < NR_DATA; j++) {
+      int expected = add(test_data[i % 8], test_data[j % 8]);
+      check(add(test_data[i % 8], test_data[j % 8]) == expected);
+    }
+  }
+  return 0;
+}
+
+int sub_main() {
+  int i, j;
+  for (i = 0; i < NR_DATA; i++) {
+    for (j = 0; j < NR_DATA; j++) {
+      int expected = sub(test_data[i % 8], test_data[j % 8]);
+      check(sub(test_data[i % 8], test_data[j % 8]) == expected);
+    }
+  }
+  return 0;
+}
+
+int mul_main() {
+  int i, j;
+  for (i = 0; i < NR_DATA; i++) {
+    for (j = 0; j < NR_DATA; j++) {
+      int expected = mul(test_data[i % 8], test_data[j % 8]);
+      check(mul(test_data[i % 8], test_data[j % 8]) == expected);
+    }
+  }
+  return 0;
+}
+
+int div_main() {
+  int i, j;
+  for (i = 0; i < NR_DATA; i++) {
+    for (j = 0; j < NR_DATA; j++) {
+      int expected = div_safe(test_data[i % 8], test_data[(j % 7) + 1]);
+      check(div_safe(test_data[i % 8], test_data[(j % 7) + 1]) == expected);
+    }
+  }
+  return 0;
+}
+
+int main() {
+  memset(ans_data, 0, sizeof(ans_data));
+
+  for (int k = 0; k < 10; k++) {
+    add_main();
+    sub_main();
+    mul_main();
+    div_main();
+  }
+  return 0;
+}
+
diff --git a/src/tcc/resources/resources-ref.S b/src/tcc/resources/resources-ref.S
index e69de29..53c68f1 100644
--- a/src/tcc/resources/resources-ref.S
+++ b/src/tcc/resources/resources-ref.S
@@ -0,0 +1,8 @@
+.section .data
+.global ramdisk_start, ramdisk_end
+ramdisk_start:
+.incbin "input/trm.c"
+.incbin "input/trap.h"
+.incbin "input/ref.c"
+.incbin "input/ref"
+ramdisk_end: