fschneider@google.com
dd824bd017
This saves space on 64-bit platforms as the offset is stored as a uint32_t compared to a pointer-size absolute address. R=vegorov@google.com Review URL: https://codereview.chromium.org//875443002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@43100 260f80e4-7a28-3924-810f-c04153c831b5
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
#include "vm/code_descriptors.h"
|
|
|
|
namespace dart {
|
|
|
|
void DescriptorList::AddDescriptor(RawPcDescriptors::Kind kind,
|
|
intptr_t pc_offset,
|
|
intptr_t deopt_id,
|
|
intptr_t token_index,
|
|
intptr_t try_index) {
|
|
ASSERT((kind == RawPcDescriptors::kRuntimeCall) ||
|
|
(kind == RawPcDescriptors::kOther) ||
|
|
(deopt_id != Isolate::kNoDeoptId));
|
|
struct PcDesc data;
|
|
data.pc_offset = pc_offset;
|
|
data.kind = kind;
|
|
data.deopt_id = deopt_id;
|
|
data.SetTokenPos(token_index);
|
|
data.try_index = try_index;
|
|
list_.Add(data);
|
|
if (try_index >= 0) {
|
|
has_try_index_ = true;
|
|
}
|
|
}
|
|
|
|
|
|
RawPcDescriptors* DescriptorList::FinalizePcDescriptors(uword entry_point) {
|
|
intptr_t num_descriptors = Length();
|
|
const PcDescriptors& descriptors =
|
|
PcDescriptors::Handle(PcDescriptors::New(num_descriptors,
|
|
has_try_index_));
|
|
for (intptr_t i = 0; i < num_descriptors; i++) {
|
|
descriptors.AddDescriptor(i,
|
|
PcOffset(i),
|
|
Kind(i),
|
|
DeoptId(i),
|
|
TokenPos(i),
|
|
TryIndex(i));
|
|
}
|
|
return descriptors.raw();
|
|
}
|
|
|
|
|
|
void StackmapTableBuilder::AddEntry(intptr_t pc_offset,
|
|
BitmapBuilder* bitmap,
|
|
intptr_t register_bit_count) {
|
|
stack_map_ = Stackmap::New(pc_offset, bitmap, register_bit_count);
|
|
list_.Add(stack_map_, Heap::kOld);
|
|
}
|
|
|
|
|
|
bool StackmapTableBuilder::Verify() {
|
|
intptr_t num_entries = Length();
|
|
Stackmap& map1 = Stackmap::Handle();
|
|
Stackmap& map2 = Stackmap::Handle();
|
|
for (intptr_t i = 1; i < num_entries; i++) {
|
|
map1 = MapAt(i - 1);
|
|
map2 = MapAt(i);
|
|
// Ensure there are no duplicates and the entries are sorted.
|
|
if (map1.PcOffset() >= map2.PcOffset()) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
RawArray* StackmapTableBuilder::FinalizeStackmaps(const Code& code) {
|
|
ASSERT(Verify());
|
|
intptr_t num_entries = Length();
|
|
if (num_entries == 0) {
|
|
return Object::empty_array().raw();
|
|
}
|
|
return Array::MakeArray(list_);
|
|
}
|
|
|
|
|
|
RawStackmap* StackmapTableBuilder::MapAt(intptr_t index) const {
|
|
Stackmap& map = Stackmap::Handle();
|
|
map ^= list_.At(index);
|
|
return map.raw();
|
|
}
|
|
|
|
} // namespace dart
|