restructured project

1 files changed, 49 insertions, 0 deletions

diff --git a/sim/gentestvec/src/register_file.c b/sim/gentestvec/src/register_file.c
new file mode 100644
index 0000000..5a50d9b
--- /dev/null
+++ b/sim/gentestvec/src/register_file.c
@@ -0,0 +1,49 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+uint32_t registers[32];
+
+uint32_t read_reg(uint32_t addr) { return addr == 0 ? 0 : registers[addr]; }
+
+void write_reg(uint32_t addr, uint32_t data, bool we) {
+  if (addr != 0 && we)
+    registers[addr] = data;
+}
+
+void test(uint32_t addr_rs0, uint32_t addr_rs1, uint32_t addr_rd2,
+          uint32_t data_rd2, bool we) {
+
+  write_reg(addr_rd2, data_rd2, we);
+  uint32_t data_rs0 = read_reg(addr_rs0);
+  uint32_t data_rs1 = read_reg(addr_rs1);
+  printf("%08X_%08X__%08X_%08X__%08X_%08X_%01X\n", addr_rs0, data_rs0, addr_rs1,
+         data_rs1, addr_rd2, data_rd2, we);
+}
+
+void tests(int num) {
+  for (int i = 0; i < num; ++i) {
+    uint32_t addr_rs0 = ((uint32_t)((rand() << 16) | rand())) % 32;
+    uint32_t addr_rs1 = ((uint32_t)((rand() << 16) | rand())) % 32;
+    uint32_t addr_rd2 = ((uint32_t)((rand() << 16) | rand())) % 32;
+    uint32_t data_rd2 = ((uint32_t)((rand() << 16) | rand()));
+    bool we = ((uint32_t)rand()) % 2;
+    test(addr_rs0, addr_rs1, addr_rd2, data_rd2, we);
+  }
+}
+
+int main(int argc, const char *argv[]) {
+  srand(time(NULL));
+  for (int i = 0; i < 32; ++i)
+    registers[0] = 0;
+
+  for (int i = 0; i < 32; ++i)
+    test(i, i, 0, 0, false);
+
+  for (int i = 0; i < 32; ++i)
+    test(i, i, i, 0xffffffff, true);
+
+  tests(10000);
+  return 0;
+}