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Diffstat (limited to 'V8Binding/v8/src/x64/debug-x64.cc')
| -rw-r--r-- | V8Binding/v8/src/x64/debug-x64.cc | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/V8Binding/v8/src/x64/debug-x64.cc b/V8Binding/v8/src/x64/debug-x64.cc deleted file mode 100644 index 10092c5..0000000 --- a/V8Binding/v8/src/x64/debug-x64.cc +++ /dev/null @@ -1,204 +0,0 @@ -// Copyright 2009 the V8 project authors. All rights reserved. -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following -// disclaimer in the documentation and/or other materials provided -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - - -#include "v8.h" - -#include "codegen-inl.h" -#include "debug.h" - - -namespace v8 { -namespace internal { - -#ifdef ENABLE_DEBUGGER_SUPPORT - -bool Debug::IsDebugBreakAtReturn(v8::internal::RelocInfo* rinfo) { - ASSERT(RelocInfo::IsJSReturn(rinfo->rmode())); - // 11th byte of patch is 0x49 (REX.WB byte of computed jump/call to r10), - // 11th byte of JS return is 0xCC (int3). - ASSERT(*(rinfo->pc() + 10) == 0x49 || *(rinfo->pc() + 10) == 0xCC); - return (*(rinfo->pc() + 10) != 0xCC); -} - -#define __ ACCESS_MASM(masm) - -static void Generate_DebugBreakCallHelper(MacroAssembler* masm, - RegList pointer_regs, - bool convert_call_to_jmp) { - // Save the content of all general purpose registers in memory. This copy in - // memory is later pushed onto the JS expression stack for the fake JS frame - // generated and also to the C frame generated on top of that. In the JS - // frame ONLY the registers containing pointers will be pushed on the - // expression stack. This causes the GC to update these pointers so that - // they will have the correct value when returning from the debugger. - __ SaveRegistersToMemory(kJSCallerSaved); - - // Enter an internal frame. - __ EnterInternalFrame(); - - // Store the registers containing object pointers on the expression stack to - // make sure that these are correctly updated during GC. - __ PushRegistersFromMemory(pointer_regs); - -#ifdef DEBUG - __ RecordComment("// Calling from debug break to runtime - come in - over"); -#endif - __ xor_(rax, rax); // No arguments (argc == 0). - __ movq(rbx, ExternalReference::debug_break()); - - CEntryDebugBreakStub ceb; - __ CallStub(&ceb); - - // Restore the register values containing object pointers from the expression - // stack in the reverse order as they where pushed. - __ PopRegistersToMemory(pointer_regs); - - // Get rid of the internal frame. - __ LeaveInternalFrame(); - - // If this call did not replace a call but patched other code then there will - // be an unwanted return address left on the stack. Here we get rid of that. - if (convert_call_to_jmp) { - __ pop(rax); - } - - // Finally restore all registers. - __ RestoreRegistersFromMemory(kJSCallerSaved); - - // Now that the break point has been handled, resume normal execution by - // jumping to the target address intended by the caller and that was - // overwritten by the address of DebugBreakXXX. - ExternalReference after_break_target = - ExternalReference(Debug_Address::AfterBreakTarget()); - __ movq(kScratchRegister, after_break_target); - __ jmp(Operand(kScratchRegister, 0)); -} - - -void Debug::GenerateCallICDebugBreak(MacroAssembler* masm) { - // Register state for keyed IC call call (from ic-x64.cc) - // ----------- S t a t e ------------- - // -- rax: number of arguments - // ----------------------------------- - // The number of arguments in rax is not smi encoded. - Generate_DebugBreakCallHelper(masm, 0, false); -} - - -void Debug::GenerateConstructCallDebugBreak(MacroAssembler* masm) { - // Register state just before return from JS function (from codegen-x64.cc). - // rax is the actual number of arguments not encoded as a smi, see comment - // above IC call. - // ----------- S t a t e ------------- - // -- rax: number of arguments - // ----------------------------------- - // The number of arguments in rax is not smi encoded. - Generate_DebugBreakCallHelper(masm, 0, false); -} - - -void Debug::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) { - // Register state for keyed IC load call (from ic-x64.cc). - // ----------- S t a t e ------------- - // No registers used on entry. - // ----------------------------------- - Generate_DebugBreakCallHelper(masm, 0, false); -} - - -void Debug::GenerateKeyedStoreICDebugBreak(MacroAssembler* masm) { - // Register state for keyed IC load call (from ic-x64.cc). - // ----------- S t a t e ------------- - // -- rax : value - // ----------------------------------- - // Register rax contains an object that needs to be pushed on the - // expression stack of the fake JS frame. - Generate_DebugBreakCallHelper(masm, rax.bit(), false); -} - - -void Debug::GenerateLoadICDebugBreak(MacroAssembler* masm) { - // Register state for IC load call (from ic-x64.cc). - // ----------- S t a t e ------------- - // -- rcx : name - // ----------------------------------- - Generate_DebugBreakCallHelper(masm, rcx.bit(), false); -} - - -void Debug::GenerateReturnDebugBreak(MacroAssembler* masm) { - // Register state just before return from JS function (from codegen-x64.cc). - // ----------- S t a t e ------------- - // -- rax: return value - // ----------------------------------- - Generate_DebugBreakCallHelper(masm, rax.bit(), true); -} - - -void Debug::GenerateStoreICDebugBreak(MacroAssembler* masm) { - // REgister state for IC store call (from ic-x64.cc). - // ----------- S t a t e ------------- - // -- rax : value - // -- rcx : name - // ----------------------------------- - Generate_DebugBreakCallHelper(masm, rax.bit() | rcx.bit(), false); -} - - -void Debug::GenerateStubNoRegistersDebugBreak(MacroAssembler* masm) { - // Register state for stub CallFunction (from CallFunctionStub in ic-x64.cc). - // ----------- S t a t e ------------- - // No registers used on entry. - // ----------------------------------- - Generate_DebugBreakCallHelper(masm, 0, false); -} - - -#undef __ - - -void BreakLocationIterator::ClearDebugBreakAtReturn() { - rinfo()->PatchCode(original_rinfo()->pc(), - Debug::kX64JSReturnSequenceLength); -} - - -bool BreakLocationIterator::IsDebugBreakAtReturn() { - return Debug::IsDebugBreakAtReturn(rinfo()); -} - - -void BreakLocationIterator::SetDebugBreakAtReturn() { - ASSERT(Debug::kX64JSReturnSequenceLength >= Debug::kX64CallInstructionLength); - rinfo()->PatchCodeWithCall(Debug::debug_break_return()->entry(), - Debug::kX64JSReturnSequenceLength - Debug::kX64CallInstructionLength); -} - -#endif // ENABLE_DEBUGGER_SUPPORT - -} } // namespace v8::internal |