sdl messagebox on runtime error

1 files changed, 12 insertions, 5 deletions

diff --git a/src/orgaemu.c b/src/orgaemu.c
index ecc9c4d..f8f642a 100644
--- a/src/orgaemu.c
+++ b/src/orgaemu.c
@@ -56,6 +56,13 @@ fail(void)
 	return 1;
 }
 
+static void
+error(const char *msg)
+{
+	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "orgaemu", msg, window);
+	fprintf(stderr, "%s\n", msg);
+}
+
 static uint16_t
 get_short(const unsigned char *s)
 {
@@ -142,7 +149,7 @@ push(uint16_t v)
 	stack[stack_ptr] = v;
 	stack_ptr += 1;
 	if (stack_ptr >= MEM_SIZE) {
-		fprintf(stderr, "stack overflow\n");
+		error("stack overflow");
 		exit(fail());
 	}
 }
@@ -151,7 +158,7 @@ static uint16_t
 pop(void)
 {
 	if (stack_ptr == 0) {
-		fprintf(stderr, "stack underflow\n");
+		error("stack underflow");
 		exit(fail());
 	}
 	stack_ptr -= 1;
@@ -164,7 +171,7 @@ push_rs(uint16_t v)
 	rstack[rstack_ptr] = v;
 	rstack_ptr += 1;
 	if (rstack_ptr >= MEM_SIZE) {
-		fprintf(stderr, "return stack overflow\n");
+		error("return stack overflow");
 		exit(fail());
 	}
 }
@@ -173,7 +180,7 @@ static uint16_t
 pop_rs(void)
 {
 	if (rstack_ptr == 0) {
-		fprintf(stderr, "return stack underflow\n");
+		error("return stack underflow");
 		exit(fail());
 	}
 	rstack_ptr -= 1;
@@ -334,7 +341,7 @@ exec_op(uint16_t *mem, long pc)
 		fputc('\n', stderr);
 		return pc + 1;
 	default:
-		fprintf(stderr, "unhandled opcode %04x\n", mem[pc]);
+		error("unsupported opcode %04x");
 		if (mem[pc] <= OP_SLP)
 			fprintf(stderr, "(%s)\n", ops[mem[pc]]);
 		exit(fail());