1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
From 96dc9518fab0929293a8fc388f6a4a64d05b0f6f Mon Sep 17 00:00:00 2001
From: Jan de Mooij <jdemooij@mozilla.com>
Date: Wed, 10 Jun 2015 18:01:09 +0200
Subject: [PATCH] Bug 1143679 - Make TryNoteIterIon behave more like
Baseline/interpreter iterators. r=shu, a=lizzard
--HG--
extra : transplant_source : W%D0%1FGe%29%2A%E2%BC%0C%09%3BH%92%2A%A0%5CO%FD%89
---
js/src/jit/IonFrames.cpp | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/js/src/jit/IonFrames.cpp b/js/src/jit/IonFrames.cpp
index 51f4301..3e41c0a 100644
--- a/js/src/jit/IonFrames.cpp
+++ b/js/src/jit/IonFrames.cpp
@@ -356,14 +356,20 @@ JitFrameIterator::machineState() const
return machine;
}
+static uint32_t
+NumArgAndLocalSlots(const InlineFrameIterator& frame)
+{
+ JSScript* script = frame.script();
+ return CountArgSlots(script, frame.maybeCallee()) + script->nfixed();
+}
+
static void
-CloseLiveIterator(JSContext* cx, const InlineFrameIterator& frame, uint32_t localSlot)
+CloseLiveIterator(JSContext* cx, const InlineFrameIterator& frame, uint32_t stackSlot)
{
SnapshotIterator si = frame.snapshotIterator();
// Skip stack slots until we reach the iterator object.
- uint32_t base = CountArgSlots(frame.script(), frame.maybeCallee()) + frame.script()->nfixed();
- uint32_t skipSlots = base + localSlot - 1;
+ uint32_t skipSlots = NumArgAndLocalSlots(frame) + stackSlot - 1;
for (unsigned i = 0; i < skipSlots; i++)
si.skip();
@@ -407,6 +413,11 @@ HandleExceptionIon(JSContext* cx, const InlineFrameIterator& frame, ResumeFromEx
if (!script->hasTrynotes())
return;
+ uint32_t base = NumArgAndLocalSlots(frame);
+ SnapshotIterator si = frame.snapshotIterator();
+ JS_ASSERT(si.numAllocations() >= base);
+ const uint32_t stackDepth = si.numAllocations() - base;
+
JSTryNote* tn = script->trynotes()->vector;
JSTryNote* tnEnd = tn + script->trynotes()->length;
@@ -417,6 +428,9 @@ HandleExceptionIon(JSContext* cx, const InlineFrameIterator& frame, ResumeFromEx
if (pcOffset >= tn->start + tn->length)
continue;
+ if (tn->stackDepth > stackDepth)
+ continue;
+
switch (tn->kind) {
case JSTRY_ITER: {
JS_ASSERT(JSOp(*(script->main() + tn->start + tn->length)) == JSOP_ENDITER);
--
2.4.3
|
