Move backend specific files to separate directories.

src/macro-assembler-ia32.h

Index: src/macro-assembler-ia32.h
diff --git a/src/macro-assembler-ia32.h b/src/macro-assembler-ia32.h
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-// 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.
-
-#ifndef V8_MACRO_ASSEMBLER_IA32_H_
-#define V8_MACRO_ASSEMBLER_IA32_H_
-
-#include "assembler.h"
-
-namespace v8 { namespace internal {
-
-// Forward declaration.
-class JumpTarget;
-
-
-// Helper types to make flags easier to read at call sites.
-enum InvokeFlag {
-  CALL_FUNCTION,
-  JUMP_FUNCTION
-};
-
-enum CodeLocation {
-  IN_JAVASCRIPT,
-  IN_JS_ENTRY,
-  IN_C_ENTRY
-};
-
-enum HandlerType {
-  TRY_CATCH_HANDLER,
-  TRY_FINALLY_HANDLER,
-  JS_ENTRY_HANDLER
-};
-
-
-// MacroAssembler implements a collection of frequently used macros.
-class MacroAssembler: public Assembler {
- public:
-  MacroAssembler(void* buffer, int size);
-
-  // ---------------------------------------------------------------------------
-  // GC Support
-
-  // Set the remembered set bit for [object+offset].
-  // object is the object being stored into, value is the object being stored.
-  // If offset is zero, then the scratch register contains the array index into
-  // the elements array represented as a Smi.
-  // All registers are clobbered by the operation.
-  void RecordWrite(Register object,
-                   int offset,
-                   Register value,
-                   Register scratch);
-
-#ifdef ENABLE_DEBUGGER_SUPPORT
-  // ---------------------------------------------------------------------------
-  // Debugger Support
-
-  void SaveRegistersToMemory(RegList regs);
-  void RestoreRegistersFromMemory(RegList regs);
-  void PushRegistersFromMemory(RegList regs);
-  void PopRegistersToMemory(RegList regs);
-  void CopyRegistersFromStackToMemory(Register base,
-                                      Register scratch,
-                                      RegList regs);
-#endif
-
-  // ---------------------------------------------------------------------------
-  // Activation frames
-
-  void EnterInternalFrame() { EnterFrame(StackFrame::INTERNAL); }
-  void LeaveInternalFrame() { LeaveFrame(StackFrame::INTERNAL); }
-
-  void EnterConstructFrame() { EnterFrame(StackFrame::CONSTRUCT); }
-  void LeaveConstructFrame() { LeaveFrame(StackFrame::CONSTRUCT); }
-
-  // Enter specific kind of exit frame; either EXIT or
-  // EXIT_DEBUG. Expects the number of arguments in register eax and
-  // sets up the number of arguments in register edi and the pointer
-  // to the first argument in register esi.
-  void EnterExitFrame(StackFrame::Type type);
-
-  // Leave the current exit frame. Expects the return value in
-  // register eax:edx (untouched) and the pointer to the first
-  // argument in register esi.
-  void LeaveExitFrame(StackFrame::Type type);
-
-
-  // ---------------------------------------------------------------------------
-  // JavaScript invokes
-
-  // Invoke the JavaScript function code by either calling or jumping.
-  void InvokeCode(const Operand& code,
-                  const ParameterCount& expected,
-                  const ParameterCount& actual,
-                  InvokeFlag flag);
-
-  void InvokeCode(Handle<Code> code,
-                  const ParameterCount& expected,
-                  const ParameterCount& actual,
-                  RelocInfo::Mode rmode,
-                  InvokeFlag flag);
-
-  // Invoke the JavaScript function in the given register. Changes the
-  // current context to the context in the function before invoking.
-  void InvokeFunction(Register function,
-                      const ParameterCount& actual,
-                      InvokeFlag flag);
-
-  // Invoke specified builtin JavaScript function. Adds an entry to
-  // the unresolved list if the name does not resolve.
-  void InvokeBuiltin(Builtins::JavaScript id, InvokeFlag flag);
-
-  // Store the code object for the given builtin in the target register.
-  void GetBuiltinEntry(Register target, Builtins::JavaScript id);
-
-  // Expression support
-  void Set(Register dst, const Immediate& x);
-  void Set(const Operand& dst, const Immediate& x);
-
-  // Compare object type for heap object.
-  // Incoming register is heap_object and outgoing register is map.
-  void CmpObjectType(Register heap_object, InstanceType type, Register map);
-
-  // Compare instance type for map.
-  void CmpInstanceType(Register map, InstanceType type);
-
-  // FCmp is similar to integer cmp, but requires unsigned
-  // jcc instructions (je, ja, jae, jb, jbe, je, and jz).
-  void FCmp();
-
-  // ---------------------------------------------------------------------------
-  // Exception handling
-
-  // Push a new try handler and link into try handler chain.
-  // The return address must be pushed before calling this helper.
-  // On exit, eax contains TOS (next_sp).
-  void PushTryHandler(CodeLocation try_location, HandlerType type);
-
-
-  // ---------------------------------------------------------------------------
-  // Inline caching support
-
-  // Generates code that verifies that the maps of objects in the
-  // prototype chain of object hasn't changed since the code was
-  // generated and branches to the miss label if any map has. If
-  // necessary the function also generates code for security check
-  // in case of global object holders. The scratch and holder
-  // registers are always clobbered, but the object register is only
-  // clobbered if it the same as the holder register. The function
-  // returns a register containing the holder - either object_reg or
-  // holder_reg.
-  Register CheckMaps(JSObject* object, Register object_reg,
-                     JSObject* holder, Register holder_reg,
-                     Register scratch, Label* miss);
-
-  // Generate code for checking access rights - used for security checks
-  // on access to global objects across environments. The holder register
-  // is left untouched, but the scratch register is clobbered.
-  void CheckAccessGlobalProxy(Register holder_reg,
-                              Register scratch,
-                              Label* miss);
-
-
-  // ---------------------------------------------------------------------------
-  // Support functions.
-
-  // Check if result is zero and op is negative.
-  void NegativeZeroTest(Register result, Register op, Label* then_label);
-
-  // Check if result is zero and op is negative in code using jump targets.
-  void NegativeZeroTest(CodeGenerator* cgen,
-                        Register result,
-                        Register op,
-                        JumpTarget* then_target);
-
-  // Check if result is zero and any of op1 and op2 are negative.
-  // Register scratch is destroyed, and it must be different from op2.
-  void NegativeZeroTest(Register result, Register op1, Register op2,
-                        Register scratch, Label* then_label);
-
-  // Try to get function prototype of a function and puts the value in
-  // the result register. Checks that the function really is a
-  // function and jumps to the miss label if the fast checks fail. The
-  // function register will be untouched; the other registers may be
-  // clobbered.
-  void TryGetFunctionPrototype(Register function,
-                               Register result,
-                               Register scratch,
-                               Label* miss);
-
-  // Generates code for reporting that an illegal operation has
-  // occurred.
-  void IllegalOperation(int num_arguments);
-
-  // ---------------------------------------------------------------------------
-  // Runtime calls
-
-  // Call a code stub.
-  void CallStub(CodeStub* stub);
-
-  // Return from a code stub after popping its arguments.
-  void StubReturn(int argc);
-
-  // Call a runtime routine.
-  // Eventually this should be used for all C calls.
-  void CallRuntime(Runtime::Function* f, int num_arguments);
-
-  // Convenience function: Same as above, but takes the fid instead.
-  void CallRuntime(Runtime::FunctionId id, int num_arguments);
-
-  // Tail call of a runtime routine (jump).
-  // Like JumpToBuiltin, but also takes care of passing the number
-  // of arguments.
-  void TailCallRuntime(const ExternalReference& ext, int num_arguments);
-
-  // Jump to the builtin routine.
-  void JumpToBuiltin(const ExternalReference& ext);
-
-
-  // ---------------------------------------------------------------------------
-  // Utilities
-
-  void Ret();
-
-  struct Unresolved {
-    int pc;
-    uint32_t flags;  // see Bootstrapper::FixupFlags decoders/encoders.
-    const char* name;
-  };
-  List<Unresolved>* unresolved() { return &unresolved_; }
-
-  Handle<Object> CodeObject() { return code_object_; }
-
-
-  // ---------------------------------------------------------------------------
-  // StatsCounter support
-
-  void SetCounter(StatsCounter* counter, int value);
-  void IncrementCounter(StatsCounter* counter, int value);
-  void DecrementCounter(StatsCounter* counter, int value);
-
-
-  // ---------------------------------------------------------------------------
-  // Debugging
-
-  // Calls Abort(msg) if the condition cc is not satisfied.
-  // Use --debug_code to enable.
-  void Assert(Condition cc, const char* msg);
-
-  // Like Assert(), but always enabled.
-  void Check(Condition cc, const char* msg);
-
-  // Print a message to stdout and abort execution.
-  void Abort(const char* msg);
-
-  // Verify restrictions about code generated in stubs.
-  void set_generating_stub(bool value) { generating_stub_ = value; }
-  bool generating_stub() { return generating_stub_; }
-  void set_allow_stub_calls(bool value) { allow_stub_calls_ = value; }
-  bool allow_stub_calls() { return allow_stub_calls_; }
-
- private:
-  List<Unresolved> unresolved_;
-  bool generating_stub_;
-  bool allow_stub_calls_;
-  Handle<Object> code_object_;  // This handle will be patched with the code
-                                // code object on installation.
-
-  // Helper functions for generating invokes.
-  void InvokePrologue(const ParameterCount& expected,
-                      const ParameterCount& actual,
-                      Handle<Code> code_constant,
-                      const Operand& code_operand,
-                      Label* done,
-                      InvokeFlag flag);
-
-  // Get the code for the given builtin. Returns if able to resolve
-  // the function in the 'resolved' flag.
-  Handle<Code> ResolveBuiltin(Builtins::JavaScript id, bool* resolved);
-
-  // Activation support.
-  void EnterFrame(StackFrame::Type type);
-  void LeaveFrame(StackFrame::Type type);
-};
-
-
-// The code patcher is used to patch (typically) small parts of code e.g. for
-// debugging and other types of instrumentation. When using the code patcher
-// the exact number of bytes specified must be emitted. Is not legal to emit
-// relocation information. If any of these constraints are violated it causes
-// an assertion.
-class CodePatcher {
- public:
-  CodePatcher(byte* address, int size);
-  virtual ~CodePatcher();
-
-  // Macro assembler to emit code.
-  MacroAssembler* masm() { return &masm_; }
-
- private:
-  byte* address_;  // The address of the code being patched.
-  int size_;  // Number of bytes of the expected patch size.
-  MacroAssembler masm_;  // Macro assembler used to generate the code.
-};
-
-
-// -----------------------------------------------------------------------------
-// Static helper functions.
-
-// Generate an Operand for loading a field from an object.
-static inline Operand FieldOperand(Register object, int offset) {
-  return Operand(object, offset - kHeapObjectTag);
-}
-
-
-// Generate an Operand for loading an indexed field from an object.
-static inline Operand FieldOperand(Register object,
-                                   Register index,
-                                   ScaleFactor scale,
-                                   int offset) {
-  return Operand(object, index, scale, offset - kHeapObjectTag);
-}
-
-
-#ifdef GENERATED_CODE_COVERAGE
-extern void LogGeneratedCodeCoverage(const char* file_line);
-#define CODE_COVERAGE_STRINGIFY(x) #x
-#define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
-#define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
-#define ACCESS_MASM(masm) {                                               \
-    byte* ia32_coverage_function =                                        \
-        reinterpret_cast<byte*>(FUNCTION_ADDR(LogGeneratedCodeCoverage)); \
-    masm->pushfd();                                                       \
-    masm->pushad();                                                       \
-    masm->push(Immediate(reinterpret_cast<int>(&__FILE_LINE__)));         \
-    masm->call(ia32_coverage_function, RelocInfo::RUNTIME_ENTRY);         \
-    masm->pop(eax);                                                       \
-    masm->popad();                                                        \
-    masm->popfd();                                                        \
-  }                                                                       \
-  masm->
-#else
-#define ACCESS_MASM(masm) masm->
-#endif
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_MACRO_ASSEMBLER_IA32_H_