a0c3797461
TBR=bmeurer@chromium.org,leszeks@chromium.org Bug: v8:9247 Change-Id: I8d14d0192ea8c705f8274e8e61a162531826edb6 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1624220 Reviewed-by: Yang Guo <yangguo@chromium.org> Reviewed-by: Hannes Payer <hpayer@chromium.org> Reviewed-by: Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#61769}
73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/interpreter/handler-table-builder.h"
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#include "src/execution/isolate.h"
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#include "src/heap/factory.h"
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#include "src/interpreter/bytecode-register.h"
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#include "src/objects/objects-inl.h"
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namespace v8 {
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namespace internal {
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namespace interpreter {
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HandlerTableBuilder::HandlerTableBuilder(Zone* zone) : entries_(zone) {}
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Handle<ByteArray> HandlerTableBuilder::ToHandlerTable(Isolate* isolate) {
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int handler_table_size = static_cast<int>(entries_.size());
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Handle<ByteArray> table_byte_array = isolate->factory()->NewByteArray(
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HandlerTable::LengthForRange(handler_table_size), AllocationType::kOld);
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HandlerTable table(*table_byte_array);
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for (int i = 0; i < handler_table_size; ++i) {
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Entry& entry = entries_[i];
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HandlerTable::CatchPrediction pred = entry.catch_prediction_;
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table.SetRangeStart(i, static_cast<int>(entry.offset_start));
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table.SetRangeEnd(i, static_cast<int>(entry.offset_end));
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table.SetRangeHandler(i, static_cast<int>(entry.offset_target), pred);
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table.SetRangeData(i, entry.context.index());
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}
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return table_byte_array;
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}
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int HandlerTableBuilder::NewHandlerEntry() {
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int handler_id = static_cast<int>(entries_.size());
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Entry entry = {0, 0, 0, Register::invalid_value(), HandlerTable::UNCAUGHT};
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entries_.push_back(entry);
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return handler_id;
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}
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void HandlerTableBuilder::SetTryRegionStart(int handler_id, size_t offset) {
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DCHECK(Smi::IsValid(offset)); // Encoding of handler table requires this.
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entries_[handler_id].offset_start = offset;
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}
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void HandlerTableBuilder::SetTryRegionEnd(int handler_id, size_t offset) {
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DCHECK(Smi::IsValid(offset)); // Encoding of handler table requires this.
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entries_[handler_id].offset_end = offset;
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}
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void HandlerTableBuilder::SetHandlerTarget(int handler_id, size_t offset) {
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DCHECK(Smi::IsValid(offset)); // Encoding of handler table requires this.
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entries_[handler_id].offset_target = offset;
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}
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void HandlerTableBuilder::SetPrediction(
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int handler_id, HandlerTable::CatchPrediction prediction) {
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entries_[handler_id].catch_prediction_ = prediction;
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}
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void HandlerTableBuilder::SetContextRegister(int handler_id, Register reg) {
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entries_[handler_id].context = reg;
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}
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} // namespace interpreter
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} // namespace internal
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} // namespace v8
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