Merge pull request #518 from pfalcon/vm-trace

vm: Add rudimentary bytecode execution tracing capability.

1 files changed, 7 insertions, 0 deletions

diff --git a/py/vm.c b/py/vm.c
index b1c1719b7..8a0bc7dbe 100644
--- a/py/vm.c
+++ b/py/vm.c
@@ -14,6 +14,11 @@
 #include "objgenerator.h"
 
 #define DETECT_VM_STACK_OVERFLOW (0)
+#if 0
+#define TRACE(ip) mp_byte_code_print2(ip, 1);
+#else
+#define TRACE(ip)
+#endif
 
 // Value stack grows up (this makes it incompatible with native C stack, but
 // makes sure that arguments to functions are in natural order arg1..argN
@@ -168,6 +173,7 @@ mp_vm_return_kind_t mp_execute_byte_code_2(const byte *code_info, const byte **i
 #if MICROPY_USE_COMPUTED_GOTO
     #include "vmentrytable.h"
     #define DISPATCH() do { \
+        TRACE(ip); \
         save_ip = ip; \
         op = *ip++; \
         goto *entry_table[op]; \
@@ -223,6 +229,7 @@ dispatch_loop:
 #if MICROPY_USE_COMPUTED_GOTO
                 DISPATCH();
 #else
+                TRACE(ip);
                 save_ip = ip;
                 op = *ip++;