Move backend specific files to separate directories.

src/debug-ia32.cc

Index: src/debug-ia32.cc
diff --git a/src/debug-ia32.cc b/src/debug-ia32.cc
deleted file mode 100644
index 9503cfca7c9141d72fc6151c7e33add66de1c018..0000000000000000000000000000000000000000
--- a/src/debug-ia32.cc
+++ /dev/null
@@ -1,220 +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
-
-// A debug break in the frame exit code is identified by a call instruction.
-bool BreakLocationIterator::IsDebugBreakAtReturn() {
-  // Opcode E8 is call.
-  return Debug::IsDebugBreakAtReturn(rinfo());
-}
-
-
-// Patch the JS frame exit code with a debug break call. See
-// CodeGenerator::VisitReturnStatement and VirtualFrame::Exit in codegen-ia32.cc
-// for the precise return instructions sequence.
-void BreakLocationIterator::SetDebugBreakAtReturn() {
-  ASSERT(Debug::kIa32JSReturnSequenceLength >=
-         Debug::kIa32CallInstructionLength);
-  rinfo()->PatchCodeWithCall(Debug::debug_break_return_entry()->entry(),
-      Debug::kIa32JSReturnSequenceLength - Debug::kIa32CallInstructionLength);
-}
-
-
-// Restore the JS frame exit code.
-void BreakLocationIterator::ClearDebugBreakAtReturn() {
-  rinfo()->PatchCode(original_rinfo()->pc(),
-                     Debug::kIa32JSReturnSequenceLength);
-}
-
-
-// Check whether the JS frame exit code has been patched with a debug break.
-bool Debug::IsDebugBreakAtReturn(RelocInfo* rinfo) {
-  ASSERT(RelocInfo::IsJSReturn(rinfo->rmode()));
-  // Opcode E8 is call.
-  return (*(rinfo->pc()) == 0xE8);
-}
-
-
-#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
-  __ Set(eax, Immediate(0));  // no arguments
-  __ mov(ebx, Immediate(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(eax);
-  }
-
-  // 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());
-  __ jmp(Operand::StaticVariable(after_break_target));
-}
-
-
-void Debug::GenerateLoadICDebugBreak(MacroAssembler* masm) {
-  // Register state for IC load call (from ic-ia32.cc).
-  // ----------- S t a t e -------------
-  //  -- ecx    : name
-  // -----------------------------------
-  Generate_DebugBreakCallHelper(masm, ecx.bit(), false);
-}
-
-
-void Debug::GenerateStoreICDebugBreak(MacroAssembler* masm) {
-  // REgister state for IC store call (from ic-ia32.cc).
-  // ----------- S t a t e -------------
-  //  -- eax    : value
-  //  -- ecx    : name
-  // -----------------------------------
-  Generate_DebugBreakCallHelper(masm, eax.bit() | ecx.bit(), false);
-}
-
-
-void Debug::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) {
-  // Register state for keyed IC load call (from ic-ia32.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-ia32.cc).
-  // ----------- S t a t e -------------
-  //  -- eax    : value
-  // -----------------------------------
-  // Register eax contains an object that needs to be pushed on the
-  // expression stack of the fake JS frame.
-  Generate_DebugBreakCallHelper(masm, eax.bit(), false);
-}
-
-
-void Debug::GenerateCallICDebugBreak(MacroAssembler* masm) {
-  // Register state for keyed IC call call (from ic-ia32.cc)
-  // ----------- S t a t e -------------
-  //  -- eax: number of arguments
-  // -----------------------------------
-  // The number of arguments in eax is not smi encoded.
-  Generate_DebugBreakCallHelper(masm, 0, false);
-}
-
-
-void Debug::GenerateConstructCallDebugBreak(MacroAssembler* masm) {
-  // Register state just before return from JS function (from codegen-ia32.cc).
-  // eax is the actual number of arguments not encoded as a smi see comment
-  // above IC call.
-  // ----------- S t a t e -------------
-  //  -- eax: number of arguments
-  // -----------------------------------
-  // The number of arguments in eax is not smi encoded.
-  Generate_DebugBreakCallHelper(masm, 0, false);
-}
-
-
-void Debug::GenerateReturnDebugBreak(MacroAssembler* masm) {
-  // Register state just before return from JS function (from codegen-ia32.cc).
-  // ----------- S t a t e -------------
-  //  -- eax: return value
-  // -----------------------------------
-  Generate_DebugBreakCallHelper(masm, eax.bit(), true);
-}
-
-
-void Debug::GenerateReturnDebugBreakEntry(MacroAssembler* masm) {
-  // OK to clobber ebx as we are returning from a JS function in the code
-  // generated by Ia32CodeGenerator::ExitJSFrame.
-  ExternalReference debug_break_return =
-      ExternalReference(Debug_Address::DebugBreakReturn());
-  __ mov(ebx, Operand::StaticVariable(debug_break_return));
-  __ add(Operand(ebx), Immediate(Code::kHeaderSize - kHeapObjectTag));
-  __ jmp(Operand(ebx));
-}
-
-
-void Debug::GenerateStubNoRegistersDebugBreak(MacroAssembler* masm) {
-  // Register state for stub CallFunction (from CallFunctionStub in ic-ia32.cc).
-  // ----------- S t a t e -------------
-  //  No registers used on entry.
-  // -----------------------------------
-  Generate_DebugBreakCallHelper(masm, 0, false);
-}
-
-
-#undef __
-
-#endif  // ENABLE_DEBUGGER_SUPPORT
-
-} }  // namespace v8::internal