srdjan@google.com
7d945c593a
Add two different PCDescriptors to differentiate between optimized and unoptimized static calls (the former loads args. descr, the later loads ICData before calling). Populate static call's ic_data field when optimizing. R=asiva@google.com Review URL: https://codereview.chromium.org//17723002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@24433 260f80e4-7a28-3924-810f-c04153c831b5
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h" // Needed here to get TARGET_ARCH_ARM.
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#if defined(TARGET_ARCH_ARM)
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#include "vm/code_patcher.h"
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#include "vm/instructions.h"
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#include "vm/object.h"
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namespace dart {
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RawArray* CodePatcher::GetClosureArgDescAt(uword return_address,
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const Code& code) {
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ASSERT(code.ContainsInstructionAt(return_address));
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CallPattern call(return_address, code);
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return call.ClosureArgumentsDescriptor();
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}
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uword CodePatcher::GetStaticCallTargetAt(uword return_address,
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const Code& code) {
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ASSERT(code.ContainsInstructionAt(return_address));
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CallPattern call(return_address, code);
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return call.TargetAddress();
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}
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void CodePatcher::PatchStaticCallAt(uword return_address,
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const Code& code,
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uword new_target) {
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ASSERT(code.ContainsInstructionAt(return_address));
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CallPattern call(return_address, code);
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call.SetTargetAddress(new_target);
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}
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void CodePatcher::PatchInstanceCallAt(uword return_address,
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const Code& code,
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uword new_target) {
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ASSERT(code.ContainsInstructionAt(return_address));
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CallPattern call(return_address, code);
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call.SetTargetAddress(new_target);
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}
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void CodePatcher::InsertCallAt(uword start, uword target) {
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// The inserted call should not overlap the lazy deopt jump code.
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ASSERT(start + CallPattern::kFixedLengthInBytes <= target);
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CallPattern::InsertAt(start, target);
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}
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uword CodePatcher::GetInstanceCallAt(uword return_address,
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const Code& code,
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ICData* ic_data) {
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ASSERT(code.ContainsInstructionAt(return_address));
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CallPattern call(return_address, code);
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if (ic_data != NULL) {
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*ic_data = call.IcData();
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}
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return call.TargetAddress();
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}
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intptr_t CodePatcher::InstanceCallSizeInBytes() {
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// The instance call instruction sequence has a variable size on ARM.
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UNREACHABLE();
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return 0;
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}
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RawFunction* CodePatcher::GetUnoptimizedStaticCallAt(
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uword return_address, const Code& code, ICData* ic_data_result) {
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ASSERT(code.ContainsInstructionAt(return_address));
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CallPattern static_call(return_address, code);
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ICData& ic_data = ICData::Handle();
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ic_data ^= static_call.IcData();
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if (ic_data_result != NULL) {
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*ic_data_result = ic_data.raw();
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}
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return ic_data.GetTargetAt(0);
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}
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} // namespace dart
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#endif // defined TARGET_ARCH_ARM
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