> Manual commit: Finished diff test

U201614531
recolic
Linux RECOLICPC 5.4.6-arch3-1 #1 SMP PREEMPT Tue, 24 Dec 2019 04:36:53 +0000 x86_64 GNU/Linux
 18:01:25 up 23:35,  1 user,  load average: 3.32, 3.11, 2.01
fea1bdde59a33e51ea8aace1826b8351a56a154

nemu/src/monitor/diff-test/diff-test.cc

@@ -69,7 +69,22 @@ void difftest_step(uint32_t eip) {
   ref_difftest_exec(1);
   ref_difftest_getregs(&ref_r);
 
-  // TODO: Check the registers state with the reference design.
+  // Check the registers state with the reference design.
   // Set `nemu_state` to `NEMU_ABORT` if they are not the same.
-  TODO();
+  #define RLIB_IMPL_REG_DIFF(which) (ref_r.which xor cpu.which)
+  if(
+    RLIB_IMPL_REG_DIFF(eax) or
+    RLIB_IMPL_REG_DIFF(ecx) or
+    RLIB_IMPL_REG_DIFF(edx) or
+    RLIB_IMPL_REG_DIFF(ebx) or
+    RLIB_IMPL_REG_DIFF(esp) or
+    RLIB_IMPL_REG_DIFF(ebp) or
+    RLIB_IMPL_REG_DIFF(esi) or
+    RLIB_IMPL_REG_DIFF(edi) or
+    RLIB_IMPL_REG_DIFF(eip) or
+    true
+  ) {
+    nemu_state = NEMU_ABORT;
+  }
+  #undef RLIB_IMPL_REG_DIFF
 }