Move backend specific files to separate directories.

src/ia32/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_