feat: mvp

08-debugging/test.c

@@ -14,9 +14,7 @@ struct user_regs_struct regs;
 void continue_execution(pid_t pid)
 {
   ptrace(PTRACE_CONT, pid, DONT_CARE, DONT_CARE);
-  int wait_status;
-  int options = 0;
-  waitpid(pid, &wait_status, options);
+  waitpid(pid, &stats, 0);
   return;
 }
 
@@ -30,6 +28,7 @@ void print_rax(pid_t pid)
 void step(pid_t pid)
 {
   ptrace(PTRACE_SINGLESTEP, pid, DONT_CARE, DONT_CARE);
+  waitpid(pid, &stats, 0);
   return;
 }
 
@@ -49,16 +48,18 @@ int main()
   {
     char buff;
     printf(" -- parrent\n");
+    continue_execution(pid); // to start app
     continue_execution(pid);
-    do {
-      waitpid(pid, &stats, 0);
-      printf("stats - %d", stats);
-      print_rax(pid);
-      ptrace(PTRACE_SINGLESTEP, pid, DONT_CARE, DONT_CARE);
-      printf("enter any: ");
-      read(0, &buff, 1);
-      printf("\n");
-    } while(stats);
+    if (stats & SIGTRAP)
+    {
+      while (stats != 0)
+      {
+        read(0, &buff, 1);
+        print_rax(pid);
+        step(pid);
+      }
+    }
+
     printf("____AFTER_TRACE_PARRENT____\n");
   }
   return 0;

08-debugging/testee.asm

@@ -8,7 +8,7 @@ section .text
 _start:
   xor rax, rax,
   add rax, 1
-  int3
+  ;int3
   add rax, 12
   ;int3
   mov rax, 33
@@ -19,6 +19,7 @@ _start:
   mov rsi, msg
   mov rdx, msg_len
   syscall
+  int3
 
   mov rax, 60
   mov rdi, 0