Move backend specific files to separate directories.

src/assembler-ia32-inl.h

-// Copyright (c) 1994-2006 Sun Microsystems Inc.
-// 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.
-//
-// - Redistribution 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 Sun Microsystems or the names of 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.
-
-// The original source code covered by the above license above has been
-// modified significantly by Google Inc.
-// Copyright 2006-2008 the V8 project authors. All rights reserved.
-
-// A light-weight IA32 Assembler.
-
-#ifndef V8_ASSEMBLER_IA32_INL_H_
-#define V8_ASSEMBLER_IA32_INL_H_
-
-#include "cpu.h"
-
-namespace v8 { namespace internal {
-
-Condition NegateCondition(Condition cc) {
-  return static_cast<Condition>(cc ^ 1);
-}
-
-
-// The modes possibly affected by apply must be in kApplyMask.
-void RelocInfo::apply(int delta) {
-  if (rmode_ == RUNTIME_ENTRY || IsCodeTarget(rmode_)) {
-    int32_t* p = reinterpret_cast<int32_t*>(pc_);
-    *p -= delta;  // relocate entry
-  } else if (rmode_ == JS_RETURN && IsCallInstruction()) {
-    // Special handling of js_return when a break point is set (call
-    // instruction has been inserted).
-    int32_t* p = reinterpret_cast<int32_t*>(pc_ + 1);
-    *p -= delta;  // relocate entry
-  } else if (IsInternalReference(rmode_)) {
-    // absolute code pointer inside code object moves with the code object.
-    int32_t* p = reinterpret_cast<int32_t*>(pc_);
-    *p += delta;  // relocate entry
-  }
-}
-
-
-Address RelocInfo::target_address() {
-  ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY);
-  return Assembler::target_address_at(pc_);
-}
-
-
-Address RelocInfo::target_address_address() {
-  ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY);
-  return reinterpret_cast<Address>(pc_);
-}
-
-
-void RelocInfo::set_target_address(Address target) {
-  ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY);
-  Assembler::set_target_address_at(pc_, target);
-}
-
-
-Object* RelocInfo::target_object() {
-  ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT);
-  return *reinterpret_cast<Object**>(pc_);
-}
-
-
-Object** RelocInfo::target_object_address() {
-  ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT);
-  return reinterpret_cast<Object**>(pc_);
-}
-
-
-void RelocInfo::set_target_object(Object* target) {
-  ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT);
-  *reinterpret_cast<Object**>(pc_) = target;
-}
-
-
-Address* RelocInfo::target_reference_address() {
-  ASSERT(rmode_ == RelocInfo::EXTERNAL_REFERENCE);
-  return reinterpret_cast<Address*>(pc_);
-}
-
-
-Address RelocInfo::call_address() {
-  ASSERT(IsCallInstruction());
-  return Assembler::target_address_at(pc_ + 1);
-}
-
-
-void RelocInfo::set_call_address(Address target) {
-  ASSERT(IsCallInstruction());
-  Assembler::set_target_address_at(pc_ + 1, target);
-}
-
-
-Object* RelocInfo::call_object() {
-  ASSERT(IsCallInstruction());
-  return *call_object_address();
-}
-
-
-Object** RelocInfo::call_object_address() {
-  ASSERT(IsCallInstruction());
-  return reinterpret_cast<Object**>(pc_ + 1);
-}
-
-
-void RelocInfo::set_call_object(Object* target) {
-  ASSERT(IsCallInstruction());
-  *call_object_address() = target;
-}
-
-
-bool RelocInfo::IsCallInstruction() {
-  return *pc_ == 0xE8;
-}
-
-
-Immediate::Immediate(int x)  {
-  x_ = x;
-  rmode_ = RelocInfo::NONE;
-}
-
-
-Immediate::Immediate(const ExternalReference& ext) {
-  x_ = reinterpret_cast<int32_t>(ext.address());
-  rmode_ = RelocInfo::EXTERNAL_REFERENCE;
-}
-
-Immediate::Immediate(const char* s) {
-  x_ = reinterpret_cast<int32_t>(s);
-  rmode_ = RelocInfo::EMBEDDED_STRING;
-}
-
-
-Immediate::Immediate(Label *internal_offset) {
-  x_ = reinterpret_cast<int32_t>(internal_offset);
-  rmode_ = RelocInfo::INTERNAL_REFERENCE;
-}
-
-
-Immediate::Immediate(Handle<Object> handle) {
-  // Verify all Objects referred by code are NOT in new space.
-  Object* obj = *handle;
-  ASSERT(!Heap::InNewSpace(obj));
-  if (obj->IsHeapObject()) {
-    x_ = reinterpret_cast<intptr_t>(handle.location());
-    rmode_ = RelocInfo::EMBEDDED_OBJECT;
-  } else {
-    // no relocation needed
-    x_ =  reinterpret_cast<intptr_t>(obj);
-    rmode_ = RelocInfo::NONE;
-  }
-}
-
-
-Immediate::Immediate(Smi* value) {
-  x_ = reinterpret_cast<intptr_t>(value);
-  rmode_ = RelocInfo::NONE;
-}
-
-
-void Assembler::emit(uint32_t x) {
-  *reinterpret_cast<uint32_t*>(pc_) = x;
-  pc_ += sizeof(uint32_t);
-}
-
-
-void Assembler::emit(Handle<Object> handle) {
-  // Verify all Objects referred by code are NOT in new space.
-  Object* obj = *handle;
-  ASSERT(!Heap::InNewSpace(obj));
-  if (obj->IsHeapObject()) {
-    emit(reinterpret_cast<intptr_t>(handle.location()),
-         RelocInfo::EMBEDDED_OBJECT);
-  } else {
-    // no relocation needed
-    emit(reinterpret_cast<intptr_t>(obj));
-  }
-}
-
-
-void Assembler::emit(uint32_t x, RelocInfo::Mode rmode) {
-  if (rmode != RelocInfo::NONE) RecordRelocInfo(rmode);
-  emit(x);
-}
-
-
-void Assembler::emit(const Immediate& x) {
-  if (x.rmode_ == RelocInfo::INTERNAL_REFERENCE) {
-    Label* label = reinterpret_cast<Label*>(x.x_);
-    emit_code_relative_offset(label);
-    return;
-  }
-  if (x.rmode_ != RelocInfo::NONE) RecordRelocInfo(x.rmode_);
-  emit(x.x_);
-}
-
-
-void Assembler::emit_code_relative_offset(Label* label) {
-  if (label->is_bound()) {
-    int32_t pos;
-    pos = label->pos() + Code::kHeaderSize - kHeapObjectTag;
-    emit(pos);
-  } else {
-    emit_disp(label, Displacement::CODE_RELATIVE);
-  }
-}
-
-
-void Assembler::emit_w(const Immediate& x) {
-  ASSERT(x.rmode_ == RelocInfo::NONE);
-  uint16_t value = static_cast<uint16_t>(x.x_);
-  reinterpret_cast<uint16_t*>(pc_)[0] = value;
-  pc_ += sizeof(uint16_t);
-}
-
-
-Address Assembler::target_address_at(Address pc) {
-  return pc + sizeof(int32_t) + *reinterpret_cast<int32_t*>(pc);
-}
-
-
-void Assembler::set_target_address_at(Address pc, Address target) {
-  int32_t* p = reinterpret_cast<int32_t*>(pc);
-  *p = target - (pc + sizeof(int32_t));
-  CPU::FlushICache(p, sizeof(int32_t));
-}
-
-
-Displacement Assembler::disp_at(Label* L) {
-  return Displacement(long_at(L->pos()));
-}
-
-
-void Assembler::disp_at_put(Label* L, Displacement disp) {
-  long_at_put(L->pos(), disp.data());
-}
-
-
-void Assembler::emit_disp(Label* L, Displacement::Type type) {
-  Displacement disp(L, type);
-  L->link_to(pc_offset());
-  emit(static_cast<int>(disp.data()));
-}
-
-
-void Operand::set_modrm(int mod, Register rm) {
-  ASSERT((mod & -4) == 0);
-  buf_[0] = mod << 6 | rm.code();
-  len_ = 1;
-}
-
-
-void Operand::set_dispr(int32_t disp, RelocInfo::Mode rmode) {
-  ASSERT(len_ == 1 || len_ == 2);
-  int32_t* p = reinterpret_cast<int32_t*>(&buf_[len_]);
-  *p = disp;
-  len_ += sizeof(int32_t);
-  rmode_ = rmode;
-}
-
-Operand::Operand(Register reg) {
-  // reg
-  set_modrm(3, reg);
-}
-
-
-Operand::Operand(int32_t disp, RelocInfo::Mode rmode) {
-  // [disp/r]
-  set_modrm(0, ebp);
-  set_dispr(disp, rmode);
-}
-
-} }  // namespace v8::internal
-
-#endif  // V8_ASSEMBLER_IA32_INL_H_