> 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
 13:45:07 up 1 day, 12:35,  1 user,  load average: 0.53, 0.38, 0.24

nemu/src/isa/riscv32/local-include/reg.h

@@ -24,6 +24,7 @@ static inline int check_reg_idx(int idx) {
 }
 
 #define gpr(idx) (cpu.gpr[check_reg_idx(idx)])
+#define selfpc (cpu.pc)
 
 static inline const char* reg_name(int idx) {
   extern const char* regs[];

nemu/src/isa/riscv32/reg.c

@@ -33,6 +33,7 @@ void isa_reg_display() {
 
 word_t isa_reg_str2val(const char *s, bool *success) {
   *success = false;
+  if (strcmp(s, "pc") == 0) return selfpc;
   for (int i = 0; i < ARRLEN(regs); i ++) {
     if (strcmp(s, reg_name(i)) == 0) {
       *success = true;