Print a message when we try to run an invalid instruction, not when we try to translate it

1 files changed, 12 insertions, 0 deletions

diff --git a/runtime.S b/runtime.S
index 140241f..73a09bf 100644
--- a/runtime.S
+++ b/runtime.S
@@ -88,6 +88,18 @@ already_supervisor_trap:
 	call m68k_native_addr_and_sync
 	add $24, %eax
 	jmp *%rcx
+
+invalid_msg:
+	.asciz "Invalid instruction at %X\n"
+	
+	.global m68k_invalid
+m68k_invalid:
+	lea invalid_msg(%rip), %rdi
+	mov %ecx, %esi
+	xor %rax, %rax
+	call printf
+	mov $1, %rdi
+	call exit
 	
 int_dbg_msg:
 	.asciz "Executing Interrupt!"