1e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch// Copyright 2011 the V8 project authors. All rights reserved. 2a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// Redistribution and use in source and binary forms, with or without 3a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// modification, are permitted provided that the following conditions are 4a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// met: 5a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 6a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions of source code must retain the above copyright 7a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// notice, this list of conditions and the following disclaimer. 8a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Redistributions in binary form must reproduce the above 9a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// copyright notice, this list of conditions and the following 10a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// disclaimer in the documentation and/or other materials provided 11a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// with the distribution. 12a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// * Neither the name of Google Inc. nor the names of its 13a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// contributors may be used to endorse or promote products derived 14a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// from this software without specific prior written permission. 15a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// 16a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 28a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "v8.h" 29a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 30f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#if defined(V8_TARGET_ARCH_X64) 31f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 328b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch#include "assembler.h" 338b112d2025046f85ef7f6be087c6129c872ebad2Ben Murdoch#include "codegen.h" 34a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#include "debug.h" 35a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 36a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 37a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace v8 { 38a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blocknamespace internal { 39a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 40a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef ENABLE_DEBUGGER_SUPPORT 41a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 429fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockbool BreakLocationIterator::IsDebugBreakAtReturn() { 439fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block return Debug::IsDebugBreakAtReturn(rinfo()); 449fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block} 459fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 469fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 479fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block// Patch the JS frame exit code with a debug break call. See 489fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block// CodeGenerator::VisitReturnStatement and VirtualFrame::Exit in codegen-x64.cc 499fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block// for the precise return instructions sequence. 509fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockvoid BreakLocationIterator::SetDebugBreakAtReturn() { 519fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block ASSERT(Assembler::kJSReturnSequenceLength >= 529fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block Assembler::kCallInstructionLength); 5344f0eee88ff00398ff7f715fab053374d808c90dSteve Block rinfo()->PatchCodeWithCall( 5444f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate::Current()->debug()->debug_break_return()->entry(), 559fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block Assembler::kJSReturnSequenceLength - Assembler::kCallInstructionLength); 569fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block} 579fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 589fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 599fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block// Restore the JS frame exit code. 609fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockvoid BreakLocationIterator::ClearDebugBreakAtReturn() { 619fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block rinfo()->PatchCode(original_rinfo()->pc(), 629fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block Assembler::kJSReturnSequenceLength); 639fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block} 649fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 659fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 669fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block// A debug break in the frame exit code is identified by the JS frame exit code 679fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block// having been patched with a call instruction. 68a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockbool Debug::IsDebugBreakAtReturn(v8::internal::RelocInfo* rinfo) { 69a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ASSERT(RelocInfo::IsJSReturn(rinfo->rmode())); 703ce2e2076e8e3e60cf1810eec160ea2d8557e9e7Steve Block return rinfo->IsPatchedReturnSequence(); 71a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 72a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 739fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 749fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockbool BreakLocationIterator::IsDebugBreakAtSlot() { 759fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block ASSERT(IsDebugBreakSlot()); 769fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // Check whether the debug break slot instructions have been patched. 779fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block return !Assembler::IsNop(rinfo()->pc()); 789fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block} 799fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 809fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 819fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockvoid BreakLocationIterator::SetDebugBreakAtSlot() { 829fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block ASSERT(IsDebugBreakSlot()); 839fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block rinfo()->PatchCodeWithCall( 8444f0eee88ff00398ff7f715fab053374d808c90dSteve Block Isolate::Current()->debug()->debug_break_slot()->entry(), 859fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block Assembler::kDebugBreakSlotLength - Assembler::kCallInstructionLength); 869fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block} 879fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 889fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 899fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockvoid BreakLocationIterator::ClearDebugBreakAtSlot() { 909fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block ASSERT(IsDebugBreakSlot()); 919fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block rinfo()->PatchCode(original_rinfo()->pc(), Assembler::kDebugBreakSlotLength); 929fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block} 939fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 949fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 95a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#define __ ACCESS_MASM(masm) 96a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 979fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block 98a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockstatic void Generate_DebugBreakCallHelper(MacroAssembler* masm, 9980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen RegList object_regs, 10080d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen RegList non_object_regs, 101a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block bool convert_call_to_jmp) { 102a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Enter an internal frame. 1033ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch { 1043ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch FrameScope scope(masm, StackFrame::INTERNAL); 1053ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 1063ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Store the registers containing live values on the expression stack to 1073ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // make sure that these are correctly updated during GC. Non object values 1083ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // are stored as as two smis causing it to be untouched by GC. 1093ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT((object_regs & ~kJSCallerSaved) == 0); 1103ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT((non_object_regs & ~kJSCallerSaved) == 0); 1113ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT((object_regs & non_object_regs) == 0); 1123ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch for (int i = 0; i < kNumJSCallerSaved; i++) { 1133ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int r = JSCallerSavedCode(i); 1143ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Register reg = { r }; 1153ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch ASSERT(!reg.is(kScratchRegister)); 1163ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if ((object_regs & (1 << r)) != 0) { 1173ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ push(reg); 1183ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 1193ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Store the 64-bit value as two smis. 1203ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if ((non_object_regs & (1 << r)) != 0) { 1213ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ movq(kScratchRegister, reg); 1223ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ Integer32ToSmi(reg, reg); 1233ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ push(reg); 1243ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ sar(kScratchRegister, Immediate(32)); 1253ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ Integer32ToSmi(kScratchRegister, kScratchRegister); 1263ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ push(kScratchRegister); 1273ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 12880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen } 129a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 130a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#ifdef DEBUG 1313ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ RecordComment("// Calling from debug break to runtime - come in - over"); 132a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif 1333ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ Set(rax, 0); // No arguments (argc == 0). 1343ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ movq(rbx, ExternalReference::debug_break(masm->isolate())); 1353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 1363ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch CEntryStub ceb(1); 1373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ CallStub(&ceb); 1383ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 1393ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Restore the register values from the expression stack. 1403ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch for (int i = kNumJSCallerSaved - 1; i >= 0; i--) { 1413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch int r = JSCallerSavedCode(i); 1423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Register reg = { r }; 1433ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if (FLAG_debug_code) { 1443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ Set(reg, kDebugZapValue); 1453ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 1463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if ((object_regs & (1 << r)) != 0) { 1473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ pop(reg); 1483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 1493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Reconstruct the 64-bit value from two smis. 1503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch if ((non_object_regs & (1 << r)) != 0) { 1513ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ pop(kScratchRegister); 1523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ SmiToInteger32(kScratchRegister, kScratchRegister); 1533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ shl(kScratchRegister, Immediate(32)); 1543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ pop(reg); 1553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ SmiToInteger32(reg, reg); 1563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ or_(reg, kScratchRegister); 1573ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 15885b71799222b55eb5dd74ea26efe0c64ab655c8cBen Murdoch } 159a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Get rid of the internal frame. 1613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch } 16285b71799222b55eb5dd74ea26efe0c64ab655c8cBen Murdoch 163a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // If this call did not replace a call but patched other code then there will 164a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // be an unwanted return address left on the stack. Here we get rid of that. 165a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block if (convert_call_to_jmp) { 16680d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen __ addq(rsp, Immediate(kPointerSize)); 167a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block } 168a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 169a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Now that the break point has been handled, resume normal execution by 170a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // jumping to the target address intended by the caller and that was 171a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // overwritten by the address of DebugBreakXXX. 172a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block ExternalReference after_break_target = 17344f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference(Debug_Address::AfterBreakTarget(), masm->isolate()); 174a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block __ movq(kScratchRegister, after_break_target); 175a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block __ jmp(Operand(kScratchRegister, 0)); 176a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 177a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 178a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1799fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockvoid Debug::GenerateLoadICDebugBreak(MacroAssembler* masm) { 1809fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // Register state for IC load call (from ic-x64.cc). 181a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------- S t a t e ------------- 1829fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // -- rax : receiver 1839fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // -- rcx : name 184a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------------------------------- 1859fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block Generate_DebugBreakCallHelper(masm, rax.bit() | rcx.bit(), 0, false); 186a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 187a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 188a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 1899fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockvoid Debug::GenerateStoreICDebugBreak(MacroAssembler* masm) { 1909fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // Register state for IC store call (from ic-x64.cc). 191a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------- S t a t e ------------- 1929fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // -- rax : value 1939fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // -- rcx : name 1949fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // -- rdx : receiver 195a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------------------------------- 1969fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block Generate_DebugBreakCallHelper( 1979fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block masm, rax.bit() | rcx.bit() | rdx.bit(), 0, false); 198a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 199a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 200a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 201a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid Debug::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) { 202a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Register state for keyed IC load call (from ic-x64.cc). 203a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------- S t a t e ------------- 2047f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // -- rax : key 2057f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // -- rdx : receiver 206a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------------------------------- 20780d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Generate_DebugBreakCallHelper(masm, rax.bit() | rdx.bit(), 0, false); 208a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 209a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 210a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 211a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Blockvoid Debug::GenerateKeyedStoreICDebugBreak(MacroAssembler* masm) { 212a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // Register state for keyed IC load call (from ic-x64.cc). 213a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------- S t a t e ------------- 214a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // -- rax : value 215f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // -- rcx : key 216f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke // -- rdx : receiver 217a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------------------------------- 21880d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Generate_DebugBreakCallHelper( 21980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen masm, rax.bit() | rcx.bit() | rdx.bit(), 0, false); 220a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 221a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 222a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2239fac840a46e8b7e26894f4792ba26dde14c56b04Steve Blockvoid Debug::GenerateCallICDebugBreak(MacroAssembler* masm) { 2249fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // Register state for IC call call (from ic-x64.cc) 225a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------- S t a t e ------------- 2269fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // -- rcx: function name 227a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block // ----------------------------------- 2289fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block Generate_DebugBreakCallHelper(masm, rcx.bit(), 0, false); 229a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} 230a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 231a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 2323ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Debug::GenerateReturnDebugBreak(MacroAssembler* masm) { 2339fac840a46e8b7e26894f4792ba26dde14c56b04Steve Block // Register state just before return from JS function (from codegen-x64.cc). 2345d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch // ----------- S t a t e ------------- 2353ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // -- rax: return value 2365d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch // ----------------------------------- 2373ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Generate_DebugBreakCallHelper(masm, rax.bit(), 0, true); 2385d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch} 2395d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch 2405d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch 2413ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Debug::GenerateCallFunctionStubDebugBreak(MacroAssembler* masm) { 2423ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Register state for CallFunctionStub (from code-stubs-x64.cc). 2435d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch // ----------- S t a t e ------------- 2443ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // -- rdi : function 2455d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch // ----------------------------------- 2463ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Generate_DebugBreakCallHelper(masm, rdi.bit(), 0, false); 2473ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch} 2483ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2493ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2503ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Debug::GenerateCallFunctionStubRecordDebugBreak(MacroAssembler* masm) { 2513ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Register state for CallFunctionStub (from code-stubs-x64.cc). 2523ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // ----------- S t a t e ------------- 2533ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // -- rdi : function 2543ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // -- rbx: cache cell for call target 2553ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // ----------------------------------- 2563ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Generate_DebugBreakCallHelper(masm, rbx.bit() | rdi.bit(), 0, false); 25785b71799222b55eb5dd74ea26efe0c64ab655c8cBen Murdoch} 25885b71799222b55eb5dd74ea26efe0c64ab655c8cBen Murdoch 25985b71799222b55eb5dd74ea26efe0c64ab655c8cBen Murdoch 2603ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Debug::GenerateCallConstructStubDebugBreak(MacroAssembler* masm) { 2613ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Register state for CallConstructStub (from code-stubs-x64.cc). 2623ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // rax is the actual number of arguments not encoded as a smi, see comment 2633ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // above IC call. 26485b71799222b55eb5dd74ea26efe0c64ab655c8cBen Murdoch // ----------- S t a t e ------------- 2653ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // -- rax: number of arguments 26685b71799222b55eb5dd74ea26efe0c64ab655c8cBen Murdoch // ----------------------------------- 2673ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The number of arguments in rax is not smi encoded. 2683ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Generate_DebugBreakCallHelper(masm, rdi.bit(), rax.bit(), false); 2693ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch} 2703ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2713ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch 2723ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdochvoid Debug::GenerateCallConstructStubRecordDebugBreak(MacroAssembler* masm) { 2733ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // Register state for CallConstructStub (from code-stubs-x64.cc). 2743ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // rax is the actual number of arguments not encoded as a smi, see comment 2753ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // above IC call. 2763ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // ----------- S t a t e ------------- 2773ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // -- rax: number of arguments 2783ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // -- rbx: cache cell for call target 2793ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // ----------------------------------- 2803ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch // The number of arguments in rax is not smi encoded. 2813ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch Generate_DebugBreakCallHelper(masm, rbx.bit() | rdi.bit(), rax.bit(), false); 2825d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch} 2835d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch 2845d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0bBen Murdoch 2857f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid Debug::GenerateSlot(MacroAssembler* masm) { 2867f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // Generate enough nop's to make space for a call instruction. 2877f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch Label check_codesize; 2887f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch __ bind(&check_codesize); 2897f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch __ RecordDebugBreakSlot(); 2903ef787dbeca8a5fb1086949cda830dccee07bfbdBen Murdoch __ Nop(Assembler::kDebugBreakSlotLength); 2917f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch ASSERT_EQ(Assembler::kDebugBreakSlotLength, 2927f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch masm->SizeOfCodeGeneratedSince(&check_codesize)); 2937f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch} 2947f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 2957f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 2967f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdochvoid Debug::GenerateSlotDebugBreak(MacroAssembler* masm) { 2977f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // In the places where a debug break slot is inserted no registers can contain 2987f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch // object pointers. 29980d68eab642096c1a48b6474d6ec33064b0ad1f5Kristian Monsen Generate_DebugBreakCallHelper(masm, 0, 0, true); 3007f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch} 3017f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 3027f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 3036ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid Debug::GeneratePlainReturnLiveEdit(MacroAssembler* masm) { 304756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick masm->ret(0); 3056ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3066ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 3077f4d5bd8c03935e2c0cd412e561b8fc5a6a880aeBen Murdoch 3086ded16be15dd865a9b21ea304d5273c8be299c87Steve Blockvoid Debug::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { 309756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick ExternalReference restarter_frame_function_slot = 31044f0eee88ff00398ff7f715fab053374d808c90dSteve Block ExternalReference(Debug_Address::RestarterFrameFunctionPointer(), 31144f0eee88ff00398ff7f715fab053374d808c90dSteve Block masm->isolate()); 312756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ movq(rax, restarter_frame_function_slot); 313756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ movq(Operand(rax, 0), Immediate(0)); 314756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 315756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick // We do not know our frame height, but set rsp based on rbp. 316756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ lea(rsp, Operand(rbp, -1 * kPointerSize)); 317756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 318756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ pop(rdi); // Function. 319756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ pop(rbp); 320756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 321756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick // Load context from the function. 322756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); 323756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 324756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick // Get function code. 325756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ movq(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); 326756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ movq(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset)); 327756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ lea(rdx, FieldOperand(rdx, Code::kHeaderSize)); 328756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 329756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick // Re-run JSFunction, rdi is function, rsi is context. 330756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick __ jmp(rdx); 3316ded16be15dd865a9b21ea304d5273c8be299c87Steve Block} 3326ded16be15dd865a9b21ea304d5273c8be299c87Steve Block 333756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrickconst bool Debug::kFrameDropperSupported = true; 334756813857a4c2a4d8ad2e805969d5768d3cf43a0Iain Merrick 335a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#undef __ 336a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 337a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block#endif // ENABLE_DEBUGGER_SUPPORT 338a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block 339a7e24c173cf37484693b9abb38e494fa7bd7baebSteve Block} } // namespace v8::internal 340f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke 341f7060e27768c550ace7ec48ad8c093466db52dfaLeon Clarke#endif // V8_TARGET_ARCH_X64 342