From c9ad69a32dcc4edc9531c5385a55a74819019416 Mon Sep 17 00:00:00 2001
From: xinyangli <lixinyang411@gmail.com>
Date: Thu, 25 Jul 2024 17:56:30 +0800
Subject: [PATCH] nemu: break before executing instruction

---
 nemu/src/cpu/cpu-exec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nemu/src/cpu/cpu-exec.c b/nemu/src/cpu/cpu-exec.c
index 583013e..49d2b6f 100644
--- a/nemu/src/cpu/cpu-exec.c
+++ b/nemu/src/cpu/cpu-exec.c
@@ -158,8 +158,6 @@ breakpoint_t *cpu_exec_with_bp(uint64_t n, breakpoint_t *bp, size_t len) {
   static Decode s;
   nemu_state.state = NEMU_RUNNING;
   do {
-    exec_once(&s, cpu.pc);
-    g_nr_guest_inst++;
     for (int i = 0; i < len; i++) {
       size_t addr = bp[i].addr;
       bp_type_t bptype = bp[i].type;
@@ -176,6 +174,8 @@ breakpoint_t *cpu_exec_with_bp(uint64_t n, breakpoint_t *bp, size_t len) {
         return bp + i;
       }
     }
+    exec_once(&s, cpu.pc);
+    g_nr_guest_inst++;
     if (nemu_state.state != NEMU_RUNNING)
       return NULL;
   } while (--n);