> compile NEMU

221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 13:17:53 up 1 day, 12:08,  1 user,  load average: 0.31, 0.31, 0.19

nemu/src/monitor/sdb/sdb.c

@@ -130,7 +130,7 @@ WP* new_wp(char* expr, int len);
 WP* get_wp(int NO);
 void free_wp(WP* wp);
 static int cmd_w(char *args) {
-  if (new_wp(args, strlen(args)) != NULL) {
+  if (new_wp(args, strlen(args)) == NULL) {
     printf("Watchpoint Set Failure\n");
     goto ERROR;
   }