regis@google.com
ad6005e5c4
Support smull ARM instruction in order to detect 32-bit multiplication overflow. Enable debugger api tests on ARM. Enable isolate tests on ARM. Enable code descriptors tests on ARM. Enable snapshot tests on ARM. Enable heap tests on ARM. Review URL: https://codereview.chromium.org//13983016 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@21890 260f80e4-7a28-3924-810f-c04153c831b5
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
// Copyright (c) 2011, 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"
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#if defined(TARGET_ARCH_X64)
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#include "vm/debugger.h"
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#include "vm/cpu.h"
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#include "vm/stub_code.h"
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namespace dart {
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// TODO(hausner): Handle captured variables.
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RawInstance* ActivationFrame::GetLocalVarValue(intptr_t slot_index) {
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uword var_address = fp() + slot_index * kWordSize;
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return reinterpret_cast<RawInstance*>(
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*reinterpret_cast<uword*>(var_address));
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}
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RawInstance* ActivationFrame::GetInstanceCallReceiver(
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intptr_t num_actual_args) {
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ASSERT(num_actual_args > 0); // At minimum we have a receiver on the stack.
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// Stack pointer points to last argument that was pushed on the stack.
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uword receiver_addr = sp() + ((num_actual_args - 1) * kWordSize);
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return reinterpret_cast<RawInstance*>(
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*reinterpret_cast<uword*>(receiver_addr));
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}
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void CodeBreakpoint::PatchFunctionReturn() {
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uint8_t* code = reinterpret_cast<uint8_t*>(pc_ - 13);
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// movq %rbp,%rsp
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ASSERT((code[0] == 0x48) && (code[1] == 0x89) && (code[2] == 0xec));
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ASSERT(code[3] == 0x5d); // popq %rbp
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ASSERT(code[4] == 0xc3); // ret
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// Next 8 bytes are nop instructions
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ASSERT((code[5] == 0x90) && (code[6] == 0x90) &&
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(code[7] == 0x90) && (code[8] == 0x90) &&
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(code[9] == 0x90) && (code[10] == 0x90) &&
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(code[11] == 0x90) && (code[12] == 0x90));
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// Smash code with call instruction and relative target address.
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uword stub_addr = StubCode::BreakpointReturnEntryPoint();
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code[0] = 0x49;
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code[1] = 0xbb;
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*reinterpret_cast<uword*>(&code[2]) = stub_addr;
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code[10] = 0x41;
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code[11] = 0xff;
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code[12] = 0xd3;
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CPU::FlushICache(pc_ - 13, 13);
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}
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void CodeBreakpoint::RestoreFunctionReturn() {
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uint8_t* code = reinterpret_cast<uint8_t*>(pc_ - 13);
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ASSERT((code[0] == 0x49) && (code[1] == 0xbb));
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code[0] = 0x48; // movq %rbp,%rsp
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code[1] = 0x89;
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code[2] = 0xec;
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code[3] = 0x5d; // popq %rbp
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code[4] = 0xc3; // ret
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code[5] = 0x90; // nop
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code[6] = 0x90; // nop
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code[7] = 0x90; // nop
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code[8] = 0x90; // nop
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code[9] = 0x90; // nop
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code[10] = 0x90; // nop
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code[11] = 0x90; // nop
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code[12] = 0x90; // nop
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CPU::FlushICache(pc_ - 13, 13);
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}
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} // namespace dart
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#endif // defined TARGET_ARCH_X64
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