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Code Issues 1 Releases Wiki Activity

Add simple tracing functionality to VM.

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Also disable debugger for normal errors.
This commit is contained in:
Calvin Rose
2019-05-04 15:03:41 -04:00
parent 4fa1b28cad
commit 88b8418253
5 changed files with 53 additions and 8 deletions
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19
src/core/vm.c
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@@ -224,6 +224,23 @@ static void *op_lookup[255] = {
#define vm_bitop(op) _vm_bitop(op, int32_t)
#define vm_bitopu(op) _vm_bitop(op, uint32_t)
/* Trace a function call */
static void vm_do_trace(JanetFunction *func) {
Janet *stack = janet_vm_fiber->data + janet_vm_fiber->stackstart;
int32_t start = janet_vm_fiber->stackstart;
int32_t end = janet_vm_fiber->stacktop;
int32_t argc = end - start;
if (func->def->name) {
janet_printf("trace (%S", func->def->name);
} else {
janet_printf("trace (%p", janet_wrap_function(func));
}
for (int32_t i = 0; i < argc; i++) {
janet_printf(" %p", stack[i]);
}
printf(")\n");
}
/* Call a non function type */
static Janet call_nonfn(JanetFiber *fiber, Janet callee) {
int32_t argn = fiber->stacktop - fiber->stackstart;
@@ -563,6 +580,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in, JanetFiberStatus status)
}
if (janet_checktype(callee, JANET_FUNCTION)) {
func = janet_unwrap_function(callee);
if (func->gc.flags & JANET_FUNCFLAG_TRACE) vm_do_trace(func);
janet_stack_frame(stack)->pc = pc;
if (janet_fiber_funcframe(fiber, func)) {
int32_t n = fiber->stacktop - fiber->stackstart;
@@ -598,6 +616,7 @@ static JanetSignal run_vm(JanetFiber *fiber, Janet in, JanetFiberStatus status)
}
if (janet_checktype(callee, JANET_FUNCTION)) {
func = janet_unwrap_function(callee);
if (func->gc.flags & JANET_FUNCFLAG_TRACE) vm_do_trace(func);
if (janet_fiber_funcframe_tail(fiber, func)) {
janet_stack_frame(fiber->data + fiber->frame)->pc = pc;
int32_t n = fiber->stacktop - fiber->stackstart;