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Diffstat (limited to 'V8Binding/v8/src/arm/debug-arm.cc')
| -rw-r--r-- | V8Binding/v8/src/arm/debug-arm.cc | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/V8Binding/v8/src/arm/debug-arm.cc b/V8Binding/v8/src/arm/debug-arm.cc deleted file mode 100644 index 4f45175..0000000 --- a/V8Binding/v8/src/arm/debug-arm.cc +++ /dev/null @@ -1,213 +0,0 @@ -// Copyright 2006-2008 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 BreakLocationIterator::IsDebugBreakAtReturn() { - return Debug::IsDebugBreakAtReturn(rinfo()); -} - - -void BreakLocationIterator::SetDebugBreakAtReturn() { - // Patch the code changing the return from JS function sequence from - // mov sp, fp - // ldmia sp!, {fp, lr} - // add sp, sp, #4 - // bx lr - // to a call to the debug break return code. - // mov lr, pc - // ldr pc, [pc, #-4] - // <debug break return code entry point address> - // bktp 0 - CodePatcher patcher(rinfo()->pc(), 4); - patcher.masm()->mov(v8::internal::lr, v8::internal::pc); - patcher.masm()->ldr(v8::internal::pc, MemOperand(v8::internal::pc, -4)); - patcher.Emit(Debug::debug_break_return()->entry()); - patcher.masm()->bkpt(0); -} - - -// Restore the JS frame exit code. -void BreakLocationIterator::ClearDebugBreakAtReturn() { - rinfo()->PatchCode(original_rinfo()->pc(), - CodeGenerator::kJSReturnSequenceLength); -} - - -// A debug break in the exit code is identified by a call. -bool Debug::IsDebugBreakAtReturn(RelocInfo* rinfo) { - ASSERT(RelocInfo::IsJSReturn(rinfo->rmode())); - return rinfo->IsCallInstruction(); -} - - -#define __ ACCESS_MASM(masm) - - -static void Generate_DebugBreakCallHelper(MacroAssembler* masm, - RegList pointer_regs) { - // 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); - - __ EnterInternalFrame(); - - // Store the registers containing object pointers on the expression stack to - // make sure that these are correctly updated during GC. - // Use sp as base to push. - __ CopyRegistersFromMemoryToStack(sp, pointer_regs); - -#ifdef DEBUG - __ RecordComment("// Calling from debug break to runtime - come in - over"); -#endif - __ mov(r0, Operand(0)); // no arguments - __ mov(r1, Operand(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. - // Use sp as base to pop. - __ CopyRegistersFromStackToMemory(sp, r3, pointer_regs); - - __ LeaveInternalFrame(); - - // 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. - __ mov(ip, Operand(ExternalReference(Debug_Address::AfterBreakTarget()))); - __ ldr(ip, MemOperand(ip)); - __ Jump(ip); -} - - -void Debug::GenerateLoadICDebugBreak(MacroAssembler* masm) { - // Calling convention for IC load (from ic-arm.cc). - // ----------- S t a t e ------------- - // -- r0 : receiver - // -- r2 : name - // -- lr : return address - // -- [sp] : receiver - // ----------------------------------- - // Registers r0 and r2 contain objects that needs to be pushed on the - // expression stack of the fake JS frame. - Generate_DebugBreakCallHelper(masm, r0.bit() | r2.bit()); -} - - -void Debug::GenerateStoreICDebugBreak(MacroAssembler* masm) { - // Calling convention for IC store (from ic-arm.cc). - // ----------- S t a t e ------------- - // -- r0 : receiver - // -- r2 : name - // -- lr : return address - // -- [sp] : receiver - // ----------------------------------- - // Registers r0 and r2 contain objects that needs to be pushed on the - // expression stack of the fake JS frame. - Generate_DebugBreakCallHelper(masm, r0.bit() | r2.bit()); -} - - -void Debug::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) { - // ---------- S t a t e -------------- - // -- lr : return address - // -- sp[0] : key - // -- sp[4] : receiver - Generate_DebugBreakCallHelper(masm, 0); -} - - -void Debug::GenerateKeyedStoreICDebugBreak(MacroAssembler* masm) { - // ---------- S t a t e -------------- - // -- lr : return address - // -- sp[0] : key - // -- sp[4] : receiver - Generate_DebugBreakCallHelper(masm, 0); -} - - -void Debug::GenerateCallICDebugBreak(MacroAssembler* masm) { - // Calling convention for IC call (from ic-arm.cc) - // ----------- S t a t e ------------- - // -- r0: number of arguments - // -- r1: receiver - // -- lr: return address - // ----------------------------------- - // Register r1 contains an object that needs to be pushed on the expression - // stack of the fake JS frame. r0 is the actual number of arguments not - // encoded as a smi, therefore it cannot be on the expression stack of the - // fake JS frame as it can easily be an invalid pointer (e.g. 1). r0 will be - // pushed on the stack of the C frame and restored from there. - Generate_DebugBreakCallHelper(masm, r1.bit()); -} - - -void Debug::GenerateConstructCallDebugBreak(MacroAssembler* masm) { - // In places other than IC call sites it is expected that r0 is TOS which - // is an object - this is not generally the case so this should be used with - // care. - Generate_DebugBreakCallHelper(masm, r0.bit()); -} - - -void Debug::GenerateReturnDebugBreak(MacroAssembler* masm) { - // In places other than IC call sites it is expected that r0 is TOS which - // is an object - this is not generally the case so this should be used with - // care. - Generate_DebugBreakCallHelper(masm, r0.bit()); -} - - -void Debug::GenerateStubNoRegistersDebugBreak(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // No registers used on entry. - // ----------------------------------- - Generate_DebugBreakCallHelper(masm, 0); -} - - -#undef __ - -#endif // ENABLE_DEBUGGER_SUPPORT - -} } // namespace v8::internal |