Implemented exit command and break on CTRL+C

Imanol-Mikel Barba Sabariego
1 parent bafce57a
Showing 1 changed file with 22 additions and 2 deletions
debug.c
@@ -5,12 +5,24 @@
 #include <malloc.h>
 #include <string.h>
 #include "debug.h"
+#include <signal.h>
  
 //uint32_t cycle_count = 0;
 uint8_t breakpoint = 1;
 uint16_t breakpoints[0xFF];
 uint16_t nbpoints = 0;
 char lastchoice = 0;
+uint8_t terminate = 0;
+
+void to_debugger(int signal)
+{
+    if(signal == SIGINT)
+    {
+        breakpoint = 1;
+        return;
+    }
+    core_dump();
+}
  
 void load_state(char *filename)
 {
@@ -123,6 +135,10 @@ void query()
                 fprintf(stderr,"Setting register %d to %d",reg,value);
                 regs[reg] = value;
                 break;
+            case 'q':
+                terminate = 1;
+                end = 1;
+                break;
             default:
                 break;
         }
@@ -274,6 +290,7 @@ void print_instruction(uint16_t opcode, uint16_t a1, uint16_t a2, uint16_t a3)
  
 void debug_program()
 {
+    signal(SIGINT, to_debugger);
     memset(breakpoints,0x00,0xFF);
     uint16_t arg1;
     uint16_t arg2;
@@ -285,12 +302,15 @@ void debug_program()
             breakpoint = 1;
             fprintf(stderr,"Breakpoint hit @ pc=%02X",pc);
         }
-        if(in_breakpoint(pc) || breakpoint)
+        if(breakpoint)
         {
-            breakpoint = 1;
             fprintf(stderr, "%02X: ", pc);
             print_instruction(mem[pc], mem[pc+1], mem[pc+2], mem[pc+3]);
             query();
+            if(terminate)
+            {
+                return;
+            }
         }
         uint16_t opcode = fetch_debug();
         decode_instruction(opcode, &arg1, &arg2, &arg3);