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Handle all stack layouts in (delayed) TRACE vmevent.

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Thanks to Sergey Bronnikov and Peter Cawley. #1087
This commit is contained in:
Mike Pall 2023-09-21 02:15:16 +02:00
parent 92b89d005a
commit b138ccfa91
1 changed files with 16 additions and 10 deletions
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26
src/lj_trace.c
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@ -524,21 +524,27 @@ static int trace_abort(jit_State *J)
J->cur.link = 0;
J->cur.linktype = LJ_TRLINK_NONE;
lj_vmevent_send(L, TRACE,
TValue *frame;
cTValue *bot = tvref(L->stack);
cTValue *frame;
const BCIns *pc;
GCfunc *fn;
BCPos pos = 0;
setstrV(L, L->top++, lj_str_newlit(L, "abort"));
setintV(L->top++, traceno);
/* Find original Lua function call to generate a better error message. */
frame = J->L->base-1;
pc = J->pc;
while (!isluafunc(frame_func(frame))) {
pc = (frame_iscont(frame) ? frame_contpc(frame) : frame_pc(frame)) - 1;
frame = frame_prev(frame);
for (frame = J->L->base-1, pc = J->pc; ; frame = frame_prev(frame)) {
if (isluafunc(frame_func(frame))) {
pos = proto_bcpos(funcproto(frame_func(frame)), pc);
break;
} else if (frame_prev(frame) <= bot) {
break;
} else if (frame_iscont(frame)) {
pc = frame_contpc(frame) - 1;
} else {
pc = frame_pc(frame) - 1;
}
}
fn = frame_func(frame);
setfuncV(L, L->top++, fn);
setintV(L->top++, proto_bcpos(funcproto(fn), pc));
setfuncV(L, L->top++, frame_func(frame));
setintV(L->top++, pos);
copyTV(L, L->top++, restorestack(L, errobj));
copyTV(L, L->top++, &J->errinfo);
);