Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(93)

Issues Search
    My Issues | Starred     Open | Closed | All

Unified Diff: src/assembler-ia32.cc

Issue 92068: Move backend specific files to separate directories. (Closed)
Patch Set: Added CPPPATH flag and made all includes use same base path. Created 11 years, 8 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « src/assembler-ia32.h ('k') | src/assembler-ia32-inl.h » ('j') | no next file with comments »
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: src/assembler-ia32.cc
diff --git a/src/assembler-ia32.cc b/src/assembler-ia32.cc
deleted file mode 100644
index 3a2d3f82dd4f385f9dd04372470495d7987e6802..0000000000000000000000000000000000000000
--- a/src/assembler-ia32.cc
+++ /dev/null
@@ -1,2240 +0,0 @@
-// 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.
-
-#include "v8.h"
-
-#include "disassembler.h"
-#include "macro-assembler.h"
-#include "serialize.h"
-
-namespace v8 { namespace internal {
-
-// -----------------------------------------------------------------------------
-// Implementation of Register
-
-Register eax = { 0 };
-Register ecx = { 1 };
-Register edx = { 2 };
-Register ebx = { 3 };
-Register esp = { 4 };
-Register ebp = { 5 };
-Register esi = { 6 };
-Register edi = { 7 };
-Register no_reg = { -1 };
-
-XMMRegister xmm0 = { 0 };
-XMMRegister xmm1 = { 1 };
-XMMRegister xmm2 = { 2 };
-XMMRegister xmm3 = { 3 };
-XMMRegister xmm4 = { 4 };
-XMMRegister xmm5 = { 5 };
-XMMRegister xmm6 = { 6 };
-XMMRegister xmm7 = { 7 };
-
-
-// -----------------------------------------------------------------------------
-// Implementation of CpuFeatures
-
-// Safe default is no features.
-uint64_t CpuFeatures::supported_ = 0;
-uint64_t CpuFeatures::enabled_ = 0;
-
-
-// The Probe method needs executable memory, so it uses Heap::CreateCode.
-// Allocation failure is silent and leads to safe default.
-void CpuFeatures::Probe() {
- ASSERT(Heap::HasBeenSetup());
- ASSERT(supported_ == 0);
- if (Serializer::enabled()) return; // No features if we might serialize.
-
- Assembler assm(NULL, 0);
- Label cpuid, done;
-#define __ assm.
- // Save old esp, since we are going to modify the stack.
- __ push(ebp);
- __ pushfd();
- __ push(ecx);
- __ push(ebx);
- __ mov(ebp, Operand(esp));
-
- // If we can modify bit 21 of the EFLAGS register, then CPUID is supported.
- __ pushfd();
- __ pop(eax);
- __ mov(edx, Operand(eax));
- __ xor_(eax, 0x200000); // Flip bit 21.
- __ push(eax);
- __ popfd();
- __ pushfd();
- __ pop(eax);
- __ xor_(eax, Operand(edx)); // Different if CPUID is supported.
- __ j(not_zero, &cpuid);
-
- // CPUID not supported. Clear the supported features in edx:eax.
- __ xor_(eax, Operand(eax));
- __ xor_(edx, Operand(edx));
- __ jmp(&done);
-
- // Invoke CPUID with 1 in eax to get feature information in
- // ecx:edx. Temporarily enable CPUID support because we know it's
- // safe here.
- __ bind(&cpuid);
- __ mov(eax, 1);
- supported_ = (1 << CPUID);
- { Scope fscope(CPUID);
- __ cpuid();
- }
- supported_ = 0;
-
- // Move the result from ecx:edx to edx:eax and make sure to mark the
- // CPUID feature as supported.
- __ mov(eax, Operand(edx));
- __ or_(eax, 1 << CPUID);
- __ mov(edx, Operand(ecx));
-
- // Done.
- __ bind(&done);
- __ mov(esp, Operand(ebp));
- __ pop(ebx);
- __ pop(ecx);
- __ popfd();
- __ pop(ebp);
- __ ret(0);
-#undef __
-
- CodeDesc desc;
- assm.GetCode(&desc);
- Object* code =
- Heap::CreateCode(desc, NULL, Code::ComputeFlags(Code::STUB), NULL);
- if (!code->IsCode()) return;
- LOG(CodeCreateEvent("Builtin", Code::cast(code), "CpuFeatures::Probe"));
- typedef uint64_t (*F0)();
- F0 probe = FUNCTION_CAST<F0>(Code::cast(code)->entry());
- supported_ = probe();
-}
-
-
-// -----------------------------------------------------------------------------
-// Implementation of Displacement
-
-void Displacement::init(Label* L, Type type) {
- ASSERT(!L->is_bound());
- int next = 0;
- if (L->is_linked()) {
- next = L->pos();
- ASSERT(next > 0); // Displacements must be at positions > 0
- }
- // Ensure that we _never_ overflow the next field.
- ASSERT(NextField::is_valid(Assembler::kMaximalBufferSize));
- data_ = NextField::encode(next) | TypeField::encode(type);
-}
-
-
-// -----------------------------------------------------------------------------
-// Implementation of RelocInfo
-
-
-const int RelocInfo::kApplyMask =
- RelocInfo::kCodeTargetMask | 1 << RelocInfo::RUNTIME_ENTRY |
- 1 << RelocInfo::JS_RETURN | 1 << RelocInfo::INTERNAL_REFERENCE;
-
-
-void RelocInfo::PatchCode(byte* instructions, int instruction_count) {
- // Patch the code at the current address with the supplied instructions.
- for (int i = 0; i < instruction_count; i++) {
- *(pc_ + i) = *(instructions + i);
- }
-}
-
-
-// Patch the code at the current PC with a call to the target address.
-// Additional guard int3 instructions can be added if required.
-void RelocInfo::PatchCodeWithCall(Address target, int guard_bytes) {
- // Call instruction takes up 5 bytes and int3 takes up one byte.
- int code_size = 5 + guard_bytes;
-
- // Patch the code.
- CodePatcher patcher(pc_, code_size);
- patcher.masm()->call(target, RelocInfo::NONE);
-
- // Add the requested number of int3 instructions after the call.
- for (int i = 0; i < guard_bytes; i++) {
- patcher.masm()->int3();
- }
-}
-
-
-// -----------------------------------------------------------------------------
-// Implementation of Operand
-
-Operand::Operand(Register base, int32_t disp, RelocInfo::Mode rmode) {
- // [base + disp/r]
- if (disp == 0 && rmode == RelocInfo::NONE && !base.is(ebp)) {
- // [base]
- set_modrm(0, base);
- if (base.is(esp)) set_sib(times_1, esp, base);
- } else if (is_int8(disp) && rmode == RelocInfo::NONE) {
- // [base + disp8]
- set_modrm(1, base);
- if (base.is(esp)) set_sib(times_1, esp, base);
- set_disp8(disp);
- } else {
- // [base + disp/r]
- set_modrm(2, base);
- if (base.is(esp)) set_sib(times_1, esp, base);
- set_dispr(disp, rmode);
- }
-}
-
-
-Operand::Operand(Register base,
- Register index,
- ScaleFactor scale,
- int32_t disp,
- RelocInfo::Mode rmode) {
- ASSERT(!index.is(esp)); // illegal addressing mode
- // [base + index*scale + disp/r]
- if (disp == 0 && rmode == RelocInfo::NONE && !base.is(ebp)) {
- // [base + index*scale]
- set_modrm(0, esp);
- set_sib(scale, index, base);
- } else if (is_int8(disp) && rmode == RelocInfo::NONE) {
- // [base + index*scale + disp8]
- set_modrm(1, esp);
- set_sib(scale, index, base);
- set_disp8(disp);
- } else {
- // [base + index*scale + disp/r]
- set_modrm(2, esp);
- set_sib(scale, index, base);
- set_dispr(disp, rmode);
- }
-}
-
-
-Operand::Operand(Register index,
- ScaleFactor scale,
- int32_t disp,
- RelocInfo::Mode rmode) {
- ASSERT(!index.is(esp)); // illegal addressing mode
- // [index*scale + disp/r]
- set_modrm(0, esp);
- set_sib(scale, index, ebp);
- set_dispr(disp, rmode);
-}
-
-
-void Operand::set_sib(ScaleFactor scale, Register index, Register base) {
- ASSERT(len_ == 1);
- ASSERT((scale & -4) == 0);
- buf_[1] = scale << 6 | index.code() << 3 | base.code();
- len_ = 2;
-}
-
-
-void Operand::set_disp8(int8_t disp) {
- ASSERT(len_ == 1 || len_ == 2);
- *reinterpret_cast<int8_t*>(&buf_[len_++]) = disp;
-}
-
-
-bool Operand::is_reg(Register reg) const {
- return ((buf_[0] & 0xF8) == 0xC0) // addressing mode is register only.
- && ((buf_[0] & 0x07) == reg.code()); // register codes match.
-}
-
-// -----------------------------------------------------------------------------
-// Implementation of Assembler
-
-// Emit a single byte. Must always be inlined.
-#define EMIT(x) \
- *pc_++ = (x)
-
-
-#ifdef GENERATED_CODE_COVERAGE
-static void InitCoverageLog();
-#endif
-
-// spare_buffer_
-static byte* spare_buffer_ = NULL;
-
-Assembler::Assembler(void* buffer, int buffer_size) {
- if (buffer == NULL) {
- // do our own buffer management
- if (buffer_size <= kMinimalBufferSize) {
- buffer_size = kMinimalBufferSize;
-
- if (spare_buffer_ != NULL) {
- buffer = spare_buffer_;
- spare_buffer_ = NULL;
- }
- }
- if (buffer == NULL) {
- buffer_ = NewArray<byte>(buffer_size);
- } else {
- buffer_ = static_cast<byte*>(buffer);
- }
- buffer_size_ = buffer_size;
- own_buffer_ = true;
- } else {
- // use externally provided buffer instead
- ASSERT(buffer_size > 0);
- buffer_ = static_cast<byte*>(buffer);
- buffer_size_ = buffer_size;
- own_buffer_ = false;
- }
-
- // Clear the buffer in debug mode unless it was provided by the
- // caller in which case we can't be sure it's okay to overwrite
- // existing code in it; see CodePatcher::CodePatcher(...).
-#ifdef DEBUG
- if (own_buffer_) {
- memset(buffer_, 0xCC, buffer_size); // int3
- }
-#endif
-
- // setup buffer pointers
- ASSERT(buffer_ != NULL);
- pc_ = buffer_;
- reloc_info_writer.Reposition(buffer_ + buffer_size, pc_);
-
- last_pc_ = NULL;
- current_statement_position_ = RelocInfo::kNoPosition;
- current_position_ = RelocInfo::kNoPosition;
- written_statement_position_ = current_statement_position_;
- written_position_ = current_position_;
-#ifdef GENERATED_CODE_COVERAGE
- InitCoverageLog();
-#endif
-}
-
-
-Assembler::~Assembler() {
- if (own_buffer_) {
- if (spare_buffer_ == NULL && buffer_size_ == kMinimalBufferSize) {
- spare_buffer_ = buffer_;
- } else {
- DeleteArray(buffer_);
- }
- }
-}
-
-
-void Assembler::GetCode(CodeDesc* desc) {
- // finalize code
- // (at this point overflow() may be true, but the gap ensures that
- // we are still not overlapping instructions and relocation info)
- ASSERT(pc_ <= reloc_info_writer.pos()); // no overlap
- // setup desc
- desc->buffer = buffer_;
- desc->buffer_size = buffer_size_;
- desc->instr_size = pc_offset();
- desc->reloc_size = (buffer_ + buffer_size_) - reloc_info_writer.pos();
- desc->origin = this;
-
- Counters::reloc_info_size.Increment(desc->reloc_size);
-}
-
-
-void Assembler::Align(int m) {
- ASSERT(IsPowerOf2(m));
- while ((pc_offset() & (m - 1)) != 0) {
- nop();
- }
-}
-
-
-void Assembler::cpuid() {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::CPUID));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xA2);
-}
-
-
-void Assembler::pushad() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x60);
-}
-
-
-void Assembler::popad() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x61);
-}
-
-
-void Assembler::pushfd() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x9C);
-}
-
-
-void Assembler::popfd() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x9D);
-}
-
-
-void Assembler::push(const Immediate& x) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- if (x.is_int8()) {
- EMIT(0x6a);
- EMIT(x.x_);
- } else {
- EMIT(0x68);
- emit(x);
- }
-}
-
-
-void Assembler::push(Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x50 | src.code());
-}
-
-
-void Assembler::push(const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xFF);
- emit_operand(esi, src);
-}
-
-
-void Assembler::pop(Register dst) {
- ASSERT(reloc_info_writer.last_pc() != NULL);
- if (FLAG_push_pop_elimination && (reloc_info_writer.last_pc() <= last_pc_)) {
- // (last_pc_ != NULL) is rolled into the above check
- // If a last_pc_ is set, we need to make sure that there has not been any
- // relocation information generated between the last instruction and this
- // pop instruction.
- byte instr = last_pc_[0];
- if ((instr & ~0x7) == 0x50) {
- int push_reg_code = instr & 0x7;
- if (push_reg_code == dst.code()) {
- pc_ = last_pc_;
- if (FLAG_print_push_pop_elimination) {
- PrintF("%d push/pop (same reg) eliminated\n", pc_offset());
- }
- } else {
- // Convert 'push src; pop dst' to 'mov dst, src'.
- last_pc_[0] = 0x8b;
- Register src = { push_reg_code };
- EnsureSpace ensure_space(this);
- emit_operand(dst, Operand(src));
- if (FLAG_print_push_pop_elimination) {
- PrintF("%d push/pop (reg->reg) eliminated\n", pc_offset());
- }
- }
- last_pc_ = NULL;
- return;
- } else if (instr == 0xff) { // push of an operand, convert to a move
- byte op1 = last_pc_[1];
- // Check if the operation is really a push
- if ((op1 & 0x38) == (6 << 3)) {
- op1 = (op1 & ~0x38) | static_cast<byte>(dst.code() << 3);
- last_pc_[0] = 0x8b;
- last_pc_[1] = op1;
- last_pc_ = NULL;
- if (FLAG_print_push_pop_elimination) {
- PrintF("%d push/pop (op->reg) eliminated\n", pc_offset());
- }
- return;
- }
- } else if ((instr == 0x89) &&
- (last_pc_[1] == 0x04) &&
- (last_pc_[2] == 0x24)) {
- // 0x71283c 396 890424 mov [esp],eax
- // 0x71283f 399 58 pop eax
- if (dst.is(eax)) {
- // change to
- // 0x710fac 216 83c404 add esp,0x4
- last_pc_[0] = 0x83;
- last_pc_[1] = 0xc4;
- last_pc_[2] = 0x04;
- last_pc_ = NULL;
- if (FLAG_print_push_pop_elimination) {
- PrintF("%d push/pop (mov-pop) eliminated\n", pc_offset());
- }
- return;
- }
- } else if (instr == 0x6a && dst.is(eax)) { // push of immediate 8 bit
- byte imm8 = last_pc_[1];
- if (imm8 == 0) {
- // 6a00 push 0x0
- // 58 pop eax
- last_pc_[0] = 0x31;
- last_pc_[1] = 0xc0;
- // change to
- // 31c0 xor eax,eax
- last_pc_ = NULL;
- if (FLAG_print_push_pop_elimination) {
- PrintF("%d push/pop (imm->reg) eliminated\n", pc_offset());
- }
- return;
- } else {
- // 6a00 push 0xXX
- // 58 pop eax
- last_pc_[0] = 0xb8;
- EnsureSpace ensure_space(this);
- if ((imm8 & 0x80) != 0) {
- EMIT(0xff);
- EMIT(0xff);
- EMIT(0xff);
- // change to
- // b8XXffffff mov eax,0xffffffXX
- } else {
- EMIT(0x00);
- EMIT(0x00);
- EMIT(0x00);
- // change to
- // b8XX000000 mov eax,0x000000XX
- }
- last_pc_ = NULL;
- if (FLAG_print_push_pop_elimination) {
- PrintF("%d push/pop (imm->reg) eliminated\n", pc_offset());
- }
- return;
- }
- } else if (instr == 0x68 && dst.is(eax)) { // push of immediate 32 bit
- // 68XXXXXXXX push 0xXXXXXXXX
- // 58 pop eax
- last_pc_[0] = 0xb8;
- last_pc_ = NULL;
- // change to
- // b8XXXXXXXX mov eax,0xXXXXXXXX
- if (FLAG_print_push_pop_elimination) {
- PrintF("%d push/pop (imm->reg) eliminated\n", pc_offset());
- }
- return;
- }
-
- // Other potential patterns for peephole:
- // 0x712716 102 890424 mov [esp], eax
- // 0x712719 105 8b1424 mov edx, [esp]
- }
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x58 | dst.code());
-}
-
-
-void Assembler::pop(const Operand& dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x8F);
- emit_operand(eax, dst);
-}
-
-
-void Assembler::enter(const Immediate& size) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xC8);
- emit_w(size);
- EMIT(0);
-}
-
-
-void Assembler::leave() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xC9);
-}
-
-
-void Assembler::mov_b(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x8A);
- emit_operand(dst, src);
-}
-
-
-void Assembler::mov_b(const Operand& dst, int8_t imm8) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xC6);
- emit_operand(eax, dst);
- EMIT(imm8);
-}
-
-
-void Assembler::mov_b(const Operand& dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x88);
- emit_operand(src, dst);
-}
-
-
-void Assembler::mov_w(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x66);
- EMIT(0x8B);
- emit_operand(dst, src);
-}
-
-
-void Assembler::mov_w(const Operand& dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x66);
- EMIT(0x89);
- emit_operand(src, dst);
-}
-
-
-void Assembler::mov(Register dst, int32_t imm32) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xB8 | dst.code());
- emit(imm32);
-}
-
-
-void Assembler::mov(Register dst, const Immediate& x) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xB8 | dst.code());
- emit(x);
-}
-
-
-void Assembler::mov(Register dst, Handle<Object> handle) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xB8 | dst.code());
- emit(handle);
-}
-
-
-void Assembler::mov(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x8B);
- emit_operand(dst, src);
-}
-
-
-void Assembler::mov(Register dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x89);
- EMIT(0xC0 | src.code() << 3 | dst.code());
-}
-
-
-void Assembler::mov(const Operand& dst, const Immediate& x) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xC7);
- emit_operand(eax, dst);
- emit(x);
-}
-
-
-void Assembler::mov(const Operand& dst, Handle<Object> handle) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xC7);
- emit_operand(eax, dst);
- emit(handle);
-}
-
-
-void Assembler::mov(const Operand& dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x89);
- emit_operand(src, dst);
-}
-
-
-void Assembler::movsx_b(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xBE);
- emit_operand(dst, src);
-}
-
-
-void Assembler::movsx_w(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xBF);
- emit_operand(dst, src);
-}
-
-
-void Assembler::movzx_b(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xB6);
- emit_operand(dst, src);
-}
-
-
-void Assembler::movzx_w(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xB7);
- emit_operand(dst, src);
-}
-
-
-void Assembler::cmov(Condition cc, Register dst, int32_t imm32) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::CMOV));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- UNIMPLEMENTED();
- USE(cc);
- USE(dst);
- USE(imm32);
-}
-
-
-void Assembler::cmov(Condition cc, Register dst, Handle<Object> handle) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::CMOV));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- UNIMPLEMENTED();
- USE(cc);
- USE(dst);
- USE(handle);
-}
-
-
-void Assembler::cmov(Condition cc, Register dst, const Operand& src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::CMOV));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- UNIMPLEMENTED();
- USE(cc);
- USE(dst);
- USE(src);
-}
-
-
-void Assembler::xchg(Register dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- if (src.is(eax) || dst.is(eax)) { // Single-byte encoding
- EMIT(0x90 | (src.is(eax) ? dst.code() : src.code()));
- } else {
- EMIT(0x87);
- EMIT(0xC0 | src.code() << 3 | dst.code());
- }
-}
-
-
-void Assembler::adc(Register dst, int32_t imm32) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(2, Operand(dst), Immediate(imm32));
-}
-
-
-void Assembler::adc(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x13);
- emit_operand(dst, src);
-}
-
-
-void Assembler::add(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x03);
- emit_operand(dst, src);
-}
-
-
-void Assembler::add(const Operand& dst, const Immediate& x) {
- ASSERT(reloc_info_writer.last_pc() != NULL);
- if (FLAG_push_pop_elimination && (reloc_info_writer.last_pc() <= last_pc_)) {
- byte instr = last_pc_[0];
- if ((instr & 0xf8) == 0x50) {
- // Last instruction was a push. Check whether this is a pop without a
- // result.
- if ((dst.is_reg(esp)) &&
- (x.x_ == kPointerSize) && (x.rmode_ == RelocInfo::NONE)) {
- pc_ = last_pc_;
- last_pc_ = NULL;
- if (FLAG_print_push_pop_elimination) {
- PrintF("%d push/pop(noreg) eliminated\n", pc_offset());
- }
- return;
- }
- }
- }
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(0, dst, x);
-}
-
-
-void Assembler::and_(Register dst, int32_t imm32) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(4, Operand(dst), Immediate(imm32));
-}
-
-
-void Assembler::and_(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x23);
- emit_operand(dst, src);
-}
-
-
-void Assembler::and_(const Operand& dst, const Immediate& x) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(4, dst, x);
-}
-
-
-void Assembler::and_(const Operand& dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x21);
- emit_operand(src, dst);
-}
-
-
-void Assembler::cmpb(const Operand& op, int8_t imm8) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x80);
- emit_operand(edi, op); // edi == 7
- EMIT(imm8);
-}
-
-
-void Assembler::cmpw(const Operand& op, Immediate imm16) {
- ASSERT(imm16.is_int16());
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x66);
- EMIT(0x81);
- emit_operand(edi, op);
- emit_w(imm16);
-}
-
-
-void Assembler::cmp(Register reg, int32_t imm32) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(7, Operand(reg), Immediate(imm32));
-}
-
-
-void Assembler::cmp(Register reg, Handle<Object> handle) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(7, Operand(reg), Immediate(handle));
-}
-
-
-void Assembler::cmp(Register reg, const Operand& op) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x3B);
- emit_operand(reg, op);
-}
-
-
-void Assembler::cmp(const Operand& op, const Immediate& imm) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(7, op, imm);
-}
-
-
-void Assembler::cmpb_al(const Operand& op) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x38); // CMP r/m8, r8
- emit_operand(eax, op); // eax has same code as register al.
-}
-
-
-void Assembler::cmpw_ax(const Operand& op) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x66);
- EMIT(0x39); // CMP r/m16, r16
- emit_operand(eax, op); // eax has same code as register ax.
-}
-
-
-void Assembler::dec_b(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xFE);
- EMIT(0xC8 | dst.code());
-}
-
-
-void Assembler::dec(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x48 | dst.code());
-}
-
-
-void Assembler::dec(const Operand& dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xFF);
- emit_operand(ecx, dst);
-}
-
-
-void Assembler::cdq() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x99);
-}
-
-
-void Assembler::idiv(Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF7);
- EMIT(0xF8 | src.code());
-}
-
-
-void Assembler::imul(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xAF);
- emit_operand(dst, src);
-}
-
-
-void Assembler::imul(Register dst, Register src, int32_t imm32) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- if (is_int8(imm32)) {
- EMIT(0x6B);
- EMIT(0xC0 | dst.code() << 3 | src.code());
- EMIT(imm32);
- } else {
- EMIT(0x69);
- EMIT(0xC0 | dst.code() << 3 | src.code());
- emit(imm32);
- }
-}
-
-
-void Assembler::inc(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x40 | dst.code());
-}
-
-
-void Assembler::inc(const Operand& dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xFF);
- emit_operand(eax, dst);
-}
-
-
-void Assembler::lea(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x8D);
- emit_operand(dst, src);
-}
-
-
-void Assembler::mul(Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF7);
- EMIT(0xE0 | src.code());
-}
-
-
-void Assembler::neg(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF7);
- EMIT(0xD8 | dst.code());
-}
-
-
-void Assembler::not_(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF7);
- EMIT(0xD0 | dst.code());
-}
-
-
-void Assembler::or_(Register dst, int32_t imm32) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(1, Operand(dst), Immediate(imm32));
-}
-
-
-void Assembler::or_(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0B);
- emit_operand(dst, src);
-}
-
-
-void Assembler::or_(const Operand& dst, const Immediate& x) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(1, dst, x);
-}
-
-
-void Assembler::or_(const Operand& dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x09);
- emit_operand(src, dst);
-}
-
-
-void Assembler::rcl(Register dst, uint8_t imm8) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(is_uint5(imm8)); // illegal shift count
- if (imm8 == 1) {
- EMIT(0xD1);
- EMIT(0xD0 | dst.code());
- } else {
- EMIT(0xC1);
- EMIT(0xD0 | dst.code());
- EMIT(imm8);
- }
-}
-
-
-void Assembler::sar(Register dst, uint8_t imm8) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(is_uint5(imm8)); // illegal shift count
- if (imm8 == 1) {
- EMIT(0xD1);
- EMIT(0xF8 | dst.code());
- } else {
- EMIT(0xC1);
- EMIT(0xF8 | dst.code());
- EMIT(imm8);
- }
-}
-
-
-void Assembler::sar(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD3);
- EMIT(0xF8 | dst.code());
-}
-
-
-void Assembler::sbb(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x1B);
- emit_operand(dst, src);
-}
-
-
-void Assembler::shld(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xA5);
- emit_operand(dst, src);
-}
-
-
-void Assembler::shl(Register dst, uint8_t imm8) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(is_uint5(imm8)); // illegal shift count
- if (imm8 == 1) {
- EMIT(0xD1);
- EMIT(0xE0 | dst.code());
- } else {
- EMIT(0xC1);
- EMIT(0xE0 | dst.code());
- EMIT(imm8);
- }
-}
-
-
-void Assembler::shl(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD3);
- EMIT(0xE0 | dst.code());
-}
-
-
-void Assembler::shrd(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xAD);
- emit_operand(dst, src);
-}
-
-
-void Assembler::shr(Register dst, uint8_t imm8) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(is_uint5(imm8)); // illegal shift count
- EMIT(0xC1);
- EMIT(0xE8 | dst.code());
- EMIT(imm8);
-}
-
-
-void Assembler::shr(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD3);
- EMIT(0xE8 | dst.code());
-}
-
-
-void Assembler::shr_cl(Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD1);
- EMIT(0xE8 | dst.code());
-}
-
-
-void Assembler::sub(const Operand& dst, const Immediate& x) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(5, dst, x);
-}
-
-
-void Assembler::sub(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x2B);
- emit_operand(dst, src);
-}
-
-
-void Assembler::sub(const Operand& dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x29);
- emit_operand(src, dst);
-}
-
-
-void Assembler::test(Register reg, const Immediate& imm) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- // Only use test against byte for registers that have a byte
- // variant: eax, ebx, ecx, and edx.
- if (imm.rmode_ == RelocInfo::NONE && is_uint8(imm.x_) && reg.code() < 4) {
- uint8_t imm8 = imm.x_;
- if (reg.is(eax)) {
- EMIT(0xA8);
- EMIT(imm8);
- } else {
- emit_arith_b(0xF6, 0xC0, reg, imm8);
- }
- } else {
- // This is not using emit_arith because test doesn't support
- // sign-extension of 8-bit operands.
- if (reg.is(eax)) {
- EMIT(0xA9);
- } else {
- EMIT(0xF7);
- EMIT(0xC0 | reg.code());
- }
- emit(imm);
- }
-}
-
-
-void Assembler::test(Register reg, const Operand& op) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x85);
- emit_operand(reg, op);
-}
-
-
-void Assembler::test(const Operand& op, const Immediate& imm) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF7);
- emit_operand(eax, op);
- emit(imm);
-}
-
-
-void Assembler::xor_(Register dst, int32_t imm32) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(6, Operand(dst), Immediate(imm32));
-}
-
-
-void Assembler::xor_(Register dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x33);
- emit_operand(dst, src);
-}
-
-
-void Assembler::xor_(const Operand& src, Register dst) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x31);
- emit_operand(dst, src);
-}
-
-
-void Assembler::xor_(const Operand& dst, const Immediate& x) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_arith(6, dst, x);
-}
-
-
-void Assembler::bt(const Operand& dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xA3);
- emit_operand(src, dst);
-}
-
-
-void Assembler::bts(const Operand& dst, Register src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0xAB);
- emit_operand(src, dst);
-}
-
-
-void Assembler::hlt() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF4);
-}
-
-
-void Assembler::int3() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xCC);
-}
-
-
-void Assembler::nop() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x90);
-}
-
-
-void Assembler::rdtsc() {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::RDTSC));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0x31);
-}
-
-
-void Assembler::ret(int imm16) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(is_uint16(imm16));
- if (imm16 == 0) {
- EMIT(0xC3);
- } else {
- EMIT(0xC2);
- EMIT(imm16 & 0xFF);
- EMIT((imm16 >> 8) & 0xFF);
- }
-}
-
-
-// Labels refer to positions in the (to be) generated code.
-// There are bound, linked, and unused labels.
-//
-// Bound labels refer to known positions in the already
-// generated code. pos() is the position the label refers to.
-//
-// Linked labels refer to unknown positions in the code
-// to be generated; pos() is the position of the 32bit
-// Displacement of the last instruction using the label.
-
-
-void Assembler::print(Label* L) {
- if (L->is_unused()) {
- PrintF("unused label\n");
- } else if (L->is_bound()) {
- PrintF("bound label to %d\n", L->pos());
- } else if (L->is_linked()) {
- Label l = *L;
- PrintF("unbound label");
- while (l.is_linked()) {
- Displacement disp = disp_at(&l);
- PrintF("@ %d ", l.pos());
- disp.print();
- PrintF("\n");
- disp.next(&l);
- }
- } else {
- PrintF("label in inconsistent state (pos = %d)\n", L->pos_);
- }
-}
-
-
-void Assembler::bind_to(Label* L, int pos) {
- EnsureSpace ensure_space(this);
- last_pc_ = NULL;
- ASSERT(0 <= pos && pos <= pc_offset()); // must have a valid binding position
- while (L->is_linked()) {
- Displacement disp = disp_at(L);
- int fixup_pos = L->pos();
- if (disp.type() == Displacement::CODE_RELATIVE) {
- // Relative to Code* heap object pointer.
- long_at_put(fixup_pos, pos + Code::kHeaderSize - kHeapObjectTag);
- } else {
- if (disp.type() == Displacement::UNCONDITIONAL_JUMP) {
- ASSERT(byte_at(fixup_pos - 1) == 0xE9); // jmp expected
- }
- // relative address, relative to point after address
- int imm32 = pos - (fixup_pos + sizeof(int32_t));
- long_at_put(fixup_pos, imm32);
- }
- disp.next(L);
- }
- L->bind_to(pos);
-}
-
-
-void Assembler::link_to(Label* L, Label* appendix) {
- EnsureSpace ensure_space(this);
- last_pc_ = NULL;
- if (appendix->is_linked()) {
- if (L->is_linked()) {
- // append appendix to L's list
- Label p;
- Label q = *L;
- do {
- p = q;
- Displacement disp = disp_at(&q);
- disp.next(&q);
- } while (q.is_linked());
- Displacement disp = disp_at(&p);
- disp.link_to(appendix);
- disp_at_put(&p, disp);
- p.Unuse(); // to avoid assertion failure in ~Label
- } else {
- // L is empty, simply use appendix
- *L = *appendix;
- }
- }
- appendix->Unuse(); // appendix should not be used anymore
-}
-
-
-void Assembler::bind(Label* L) {
- EnsureSpace ensure_space(this);
- last_pc_ = NULL;
- ASSERT(!L->is_bound()); // label can only be bound once
- bind_to(L, pc_offset());
-}
-
-
-void Assembler::call(Label* L) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- if (L->is_bound()) {
- const int long_size = 5;
- int offs = L->pos() - pc_offset();
- ASSERT(offs <= 0);
- // 1110 1000 #32-bit disp
- EMIT(0xE8);
- emit(offs - long_size);
- } else {
- // 1110 1000 #32-bit disp
- EMIT(0xE8);
- emit_disp(L, Displacement::OTHER);
- }
-}
-
-
-void Assembler::call(byte* entry, RelocInfo::Mode rmode) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(!RelocInfo::IsCodeTarget(rmode));
- EMIT(0xE8);
- emit(entry - (pc_ + sizeof(int32_t)), rmode);
-}
-
-
-void Assembler::call(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xFF);
- emit_operand(edx, adr);
-}
-
-
-void Assembler::call(Handle<Code> code, RelocInfo::Mode rmode) {
- WriteRecordedPositions();
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(RelocInfo::IsCodeTarget(rmode));
- EMIT(0xE8);
- emit(reinterpret_cast<intptr_t>(code.location()), rmode);
-}
-
-
-void Assembler::jmp(Label* L) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- if (L->is_bound()) {
- const int short_size = 2;
- const int long_size = 5;
- int offs = L->pos() - pc_offset();
- ASSERT(offs <= 0);
- if (is_int8(offs - short_size)) {
- // 1110 1011 #8-bit disp
- EMIT(0xEB);
- EMIT((offs - short_size) & 0xFF);
- } else {
- // 1110 1001 #32-bit disp
- EMIT(0xE9);
- emit(offs - long_size);
- }
- } else {
- // 1110 1001 #32-bit disp
- EMIT(0xE9);
- emit_disp(L, Displacement::UNCONDITIONAL_JUMP);
- }
-}
-
-
-void Assembler::jmp(byte* entry, RelocInfo::Mode rmode) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(!RelocInfo::IsCodeTarget(rmode));
- EMIT(0xE9);
- emit(entry - (pc_ + sizeof(int32_t)), rmode);
-}
-
-
-void Assembler::jmp(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xFF);
- emit_operand(esp, adr);
-}
-
-
-void Assembler::jmp(Handle<Code> code, RelocInfo::Mode rmode) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(RelocInfo::IsCodeTarget(rmode));
- EMIT(0xE9);
- emit(reinterpret_cast<intptr_t>(code.location()), rmode);
-}
-
-
-
-void Assembler::j(Condition cc, Label* L, Hint hint) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT(0 <= cc && cc < 16);
- if (FLAG_emit_branch_hints && hint != no_hint) EMIT(hint);
- if (L->is_bound()) {
- const int short_size = 2;
- const int long_size = 6;
- int offs = L->pos() - pc_offset();
- ASSERT(offs <= 0);
- if (is_int8(offs - short_size)) {
- // 0111 tttn #8-bit disp
- EMIT(0x70 | cc);
- EMIT((offs - short_size) & 0xFF);
- } else {
- // 0000 1111 1000 tttn #32-bit disp
- EMIT(0x0F);
- EMIT(0x80 | cc);
- emit(offs - long_size);
- }
- } else {
- // 0000 1111 1000 tttn #32-bit disp
- // Note: could eliminate cond. jumps to this jump if condition
- // is the same however, seems to be rather unlikely case.
- EMIT(0x0F);
- EMIT(0x80 | cc);
- emit_disp(L, Displacement::OTHER);
- }
-}
-
-
-void Assembler::j(Condition cc, byte* entry, RelocInfo::Mode rmode, Hint hint) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- ASSERT((0 <= cc) && (cc < 16));
- if (FLAG_emit_branch_hints && hint != no_hint) EMIT(hint);
- // 0000 1111 1000 tttn #32-bit disp
- EMIT(0x0F);
- EMIT(0x80 | cc);
- emit(entry - (pc_ + sizeof(int32_t)), rmode);
-}
-
-
-void Assembler::j(Condition cc, Handle<Code> code, Hint hint) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- if (FLAG_emit_branch_hints && hint != no_hint) EMIT(hint);
- // 0000 1111 1000 tttn #32-bit disp
- EMIT(0x0F);
- EMIT(0x80 | cc);
- emit(reinterpret_cast<intptr_t>(code.location()), RelocInfo::CODE_TARGET);
-}
-
-
-// FPU instructions
-
-
-void Assembler::fld(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xD9, 0xC0, i);
-}
-
-
-void Assembler::fld1() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xE8);
-}
-
-
-void Assembler::fldz() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xEE);
-}
-
-
-void Assembler::fld_s(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- emit_operand(eax, adr);
-}
-
-
-void Assembler::fld_d(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDD);
- emit_operand(eax, adr);
-}
-
-
-void Assembler::fstp_s(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- emit_operand(ebx, adr);
-}
-
-
-void Assembler::fstp_d(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDD);
- emit_operand(ebx, adr);
-}
-
-
-void Assembler::fild_s(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDB);
- emit_operand(eax, adr);
-}
-
-
-void Assembler::fild_d(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDF);
- emit_operand(ebp, adr);
-}
-
-
-void Assembler::fistp_s(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDB);
- emit_operand(ebx, adr);
-}
-
-
-void Assembler::fisttp_s(const Operand& adr) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE3));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDB);
- emit_operand(ecx, adr);
-}
-
-
-void Assembler::fist_s(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDB);
- emit_operand(edx, adr);
-}
-
-
-void Assembler::fistp_d(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDF);
- emit_operand(edi, adr);
-}
-
-
-void Assembler::fabs() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xE1);
-}
-
-
-void Assembler::fchs() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xE0);
-}
-
-
-void Assembler::fadd(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDC, 0xC0, i);
-}
-
-
-void Assembler::fsub(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDC, 0xE8, i);
-}
-
-
-void Assembler::fisub_s(const Operand& adr) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDA);
- emit_operand(esp, adr);
-}
-
-
-void Assembler::fmul(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDC, 0xC8, i);
-}
-
-
-void Assembler::fdiv(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDC, 0xF8, i);
-}
-
-
-void Assembler::faddp(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDE, 0xC0, i);
-}
-
-
-void Assembler::fsubp(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDE, 0xE8, i);
-}
-
-
-void Assembler::fsubrp(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDE, 0xE0, i);
-}
-
-
-void Assembler::fmulp(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDE, 0xC8, i);
-}
-
-
-void Assembler::fdivp(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDE, 0xF8, i);
-}
-
-
-void Assembler::fprem() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xF8);
-}
-
-
-void Assembler::fprem1() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xF5);
-}
-
-
-void Assembler::fxch(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xD9, 0xC8, i);
-}
-
-
-void Assembler::fincstp() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xF7);
-}
-
-
-void Assembler::ffree(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDD, 0xC0, i);
-}
-
-
-void Assembler::ftst() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xE4);
-}
-
-
-void Assembler::fucomp(int i) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- emit_farith(0xDD, 0xE8, i);
-}
-
-
-void Assembler::fucompp() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDA);
- EMIT(0xE9);
-}
-
-
-void Assembler::fcompp() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDE);
- EMIT(0xD9);
-}
-
-
-void Assembler::fnstsw_ax() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xdF);
- EMIT(0xE0);
-}
-
-
-void Assembler::fwait() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x9B);
-}
-
-
-void Assembler::frndint() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xD9);
- EMIT(0xFC);
-}
-
-
-void Assembler::fnclex() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xDB);
- EMIT(0xE2);
-}
-
-
-void Assembler::sahf() {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x9E);
-}
-
-
-void Assembler::setcc(Condition cc, Register reg) {
- ASSERT(reg.is_byte_register());
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0x0F);
- EMIT(0x90 | cc);
- EMIT(0xC0 | reg.code());
-}
-
-
-void Assembler::cvttss2si(Register dst, const Operand& src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF3);
- EMIT(0x0F);
- EMIT(0x2C);
- emit_operand(dst, src);
-}
-
-
-void Assembler::cvttsd2si(Register dst, const Operand& src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF2);
- EMIT(0x0F);
- EMIT(0x2C);
- emit_operand(dst, src);
-}
-
-
-void Assembler::cvtsi2sd(XMMRegister dst, const Operand& src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF2);
- EMIT(0x0F);
- EMIT(0x2A);
- emit_sse_operand(dst, src);
-}
-
-
-void Assembler::addsd(XMMRegister dst, XMMRegister src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF2);
- EMIT(0x0F);
- EMIT(0x58);
- emit_sse_operand(dst, src);
-}
-
-
-void Assembler::mulsd(XMMRegister dst, XMMRegister src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF2);
- EMIT(0x0F);
- EMIT(0x59);
- emit_sse_operand(dst, src);
-}
-
-
-void Assembler::subsd(XMMRegister dst, XMMRegister src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF2);
- EMIT(0x0F);
- EMIT(0x5C);
- emit_sse_operand(dst, src);
-}
-
-
-void Assembler::divsd(XMMRegister dst, XMMRegister src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF2);
- EMIT(0x0F);
- EMIT(0x5E);
- emit_sse_operand(dst, src);
-}
-
-
-void Assembler::movdbl(XMMRegister dst, const Operand& src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- movsd(dst, src);
-}
-
-
-void Assembler::movdbl(const Operand& dst, XMMRegister src) {
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- movsd(dst, src);
-}
-
-
-void Assembler::movsd(const Operand& dst, XMMRegister src ) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF2); // double
- EMIT(0x0F);
- EMIT(0x11); // store
- emit_sse_operand(src, dst);
-}
-
-
-void Assembler::movsd(XMMRegister dst, const Operand& src) {
- ASSERT(CpuFeatures::IsEnabled(CpuFeatures::SSE2));
- EnsureSpace ensure_space(this);
- last_pc_ = pc_;
- EMIT(0xF2); // double
- EMIT(0x0F);
- EMIT(0x10); // load
- emit_sse_operand(dst, src);
-}
-
-
-void Assembler::emit_sse_operand(XMMRegister reg, const Operand& adr) {
- Register ireg = { reg.code() };
- emit_operand(ireg, adr);
-}
-
-
-void Assembler::emit_sse_operand(XMMRegister dst, XMMRegister src) {
- EMIT(0xC0 | dst.code() << 3 | src.code());
-}
-
-
-void Assembler::Print() {
- Disassembler::Decode(stdout, buffer_, pc_);
-}
-
-
-void Assembler::RecordJSReturn() {
- WriteRecordedPositions();
- EnsureSpace ensure_space(this);
- RecordRelocInfo(RelocInfo::JS_RETURN);
-}
-
-
-void Assembler::RecordComment(const char* msg) {
- if (FLAG_debug_code) {
- EnsureSpace ensure_space(this);
- RecordRelocInfo(RelocInfo::COMMENT, reinterpret_cast<intptr_t>(msg));
- }
-}
-
-
-void Assembler::RecordPosition(int pos) {
- ASSERT(pos != RelocInfo::kNoPosition);
- ASSERT(pos >= 0);
- current_position_ = pos;
-}
-
-
-void Assembler::RecordStatementPosition(int pos) {
- ASSERT(pos != RelocInfo::kNoPosition);
- ASSERT(pos >= 0);
- current_statement_position_ = pos;
-}
-
-
-void Assembler::WriteRecordedPositions() {
- // Write the statement position if it is different from what was written last
- // time.
- if (current_statement_position_ != written_statement_position_) {
- EnsureSpace ensure_space(this);
- RecordRelocInfo(RelocInfo::STATEMENT_POSITION, current_statement_position_);
- written_statement_position_ = current_statement_position_;
- }
-
- // Write the position if it is different from what was written last time and
- // also different from the written statement position.
- if (current_position_ != written_position_ &&
- current_position_ != written_statement_position_) {
- EnsureSpace ensure_space(this);
- RecordRelocInfo(RelocInfo::POSITION, current_position_);
- written_position_ = current_position_;
- }
-}
-
-
-void Assembler::GrowBuffer() {
- ASSERT(overflow()); // should not call this otherwise
- if (!own_buffer_) FATAL("external code buffer is too small");
-
- // compute new buffer size
- CodeDesc desc; // the new buffer
- if (buffer_size_ < 4*KB) {
- desc.buffer_size = 4*KB;
- } else {
- desc.buffer_size = 2*buffer_size_;
- }
- // Some internal data structures overflow for very large buffers,
- // they must ensure that kMaximalBufferSize is not too large.
- if ((desc.buffer_size > kMaximalBufferSize) ||
- (desc.buffer_size > Heap::OldGenerationSize())) {
- V8::FatalProcessOutOfMemory("Assembler::GrowBuffer");
- }
-
- // setup new buffer
- desc.buffer = NewArray<byte>(desc.buffer_size);
- desc.instr_size = pc_offset();
- desc.reloc_size = (buffer_ + buffer_size_) - (reloc_info_writer.pos());
-
- // Clear the buffer in debug mode. Use 'int3' instructions to make
- // sure to get into problems if we ever run uninitialized code.
-#ifdef DEBUG
- memset(desc.buffer, 0xCC, desc.buffer_size);
-#endif
-
- // copy the data
- int pc_delta = desc.buffer - buffer_;
- int rc_delta = (desc.buffer + desc.buffer_size) - (buffer_ + buffer_size_);
- memmove(desc.buffer, buffer_, desc.instr_size);
- memmove(rc_delta + reloc_info_writer.pos(),
- reloc_info_writer.pos(), desc.reloc_size);
-
- // switch buffers
- if (spare_buffer_ == NULL && buffer_size_ == kMinimalBufferSize) {
- spare_buffer_ = buffer_;
- } else {
- DeleteArray(buffer_);
- }
- buffer_ = desc.buffer;
- buffer_size_ = desc.buffer_size;
- pc_ += pc_delta;
- if (last_pc_ != NULL) {
- last_pc_ += pc_delta;
- }
- reloc_info_writer.Reposition(reloc_info_writer.pos() + rc_delta,
- reloc_info_writer.last_pc() + pc_delta);
-
- // relocate runtime entries
- for (RelocIterator it(desc); !it.done(); it.next()) {
- RelocInfo::Mode rmode = it.rinfo()->rmode();
- if (rmode == RelocInfo::RUNTIME_ENTRY) {
- int32_t* p = reinterpret_cast<int32_t*>(it.rinfo()->pc());
- *p -= pc_delta; // relocate entry
- } else if (rmode == RelocInfo::INTERNAL_REFERENCE) {
- int32_t* p = reinterpret_cast<int32_t*>(it.rinfo()->pc());
- if (*p != 0) { // 0 means uninitialized.
- *p += pc_delta;
- }
- }
- }
-
- ASSERT(!overflow());
-}
-
-
-void Assembler::emit_arith_b(int op1, int op2, Register dst, int imm8) {
- ASSERT(is_uint8(op1) && is_uint8(op2)); // wrong opcode
- ASSERT(is_uint8(imm8));
- ASSERT((op1 & 0x01) == 0); // should be 8bit operation
- EMIT(op1);
- EMIT(op2 | dst.code());
- EMIT(imm8);
-}
-
-
-void Assembler::emit_arith(int sel, Operand dst, const Immediate& x) {
- ASSERT((0 <= sel) && (sel <= 7));
- Register ireg = { sel };
- if (x.is_int8()) {
- EMIT(0x83); // using a sign-extended 8-bit immediate.
- emit_operand(ireg, dst);
- EMIT(x.x_ & 0xFF);
- } else if (dst.is_reg(eax)) {
- EMIT((sel << 3) | 0x05); // short form if the destination is eax.
- emit(x);
- } else {
- EMIT(0x81); // using a literal 32-bit immediate.
- emit_operand(ireg, dst);
- emit(x);
- }
-}
-
-
-void Assembler::emit_operand(Register reg, const Operand& adr) {
- const unsigned length = adr.len_;
- ASSERT(length > 0);
-
- // Emit updated ModRM byte containing the given register.
- pc_[0] = (adr.buf_[0] & ~0x38) | (reg.code() << 3);
-
- // Emit the rest of the encoded operand.
- for (unsigned i = 1; i < length; i++) pc_[i] = adr.buf_[i];
- pc_ += length;
-
- // Emit relocation information if necessary.
- if (length >= sizeof(int32_t) && adr.rmode_ != RelocInfo::NONE) {
- pc_ -= sizeof(int32_t); // pc_ must be *at* disp32
- RecordRelocInfo(adr.rmode_);
- pc_ += sizeof(int32_t);
- }
-}
-
-
-void Assembler::emit_farith(int b1, int b2, int i) {
- ASSERT(is_uint8(b1) && is_uint8(b2)); // wrong opcode
- ASSERT(0 <= i && i < 8); // illegal stack offset
- EMIT(b1);
- EMIT(b2 + i);
-}
-
-
-void Assembler::dd(uint32_t data, RelocInfo::Mode reloc_info) {
- EnsureSpace ensure_space(this);
- emit(data, reloc_info);
-}
-
-
-void Assembler::RecordRelocInfo(RelocInfo::Mode rmode, intptr_t data) {
- ASSERT(rmode != RelocInfo::NONE);
- // Don't record external references unless the heap will be serialized.
- if (rmode == RelocInfo::EXTERNAL_REFERENCE &&
- !Serializer::enabled() &&
- !FLAG_debug_code) {
- return;
- }
- RelocInfo rinfo(pc_, rmode, data);
- reloc_info_writer.Write(&rinfo);
-}
-
-
-void Assembler::WriteInternalReference(int position, const Label& bound_label) {
- ASSERT(bound_label.is_bound());
- ASSERT(0 <= position);
- ASSERT(position + static_cast<int>(sizeof(uint32_t)) <= pc_offset());
- ASSERT(long_at(position) == 0); // only initialize once!
-
- uint32_t label_loc = reinterpret_cast<uint32_t>(addr_at(bound_label.pos()));
- long_at_put(position, label_loc);
-}
-
-
-#ifdef GENERATED_CODE_COVERAGE
-static FILE* coverage_log = NULL;
-
-
-static void InitCoverageLog() {
- char* file_name = getenv("V8_GENERATED_CODE_COVERAGE_LOG");
- if (file_name != NULL) {
- coverage_log = fopen(file_name, "aw+");
- }
-}
-
-
-void LogGeneratedCodeCoverage(const char* file_line) {
- const char* return_address = (&file_line)[-1];
- char* push_insn = const_cast<char*>(return_address - 12);
- push_insn[0] = 0xeb; // Relative branch insn.
- push_insn[1] = 13; // Skip over coverage insns.
- if (coverage_log != NULL) {
- fprintf(coverage_log, "%s\n", file_line);
- fflush(coverage_log);
- }
-}
-
-#endif
-
-} } // namespace v8::internal
« no previous file with comments | « src/assembler-ia32.h ('k') | src/assembler-ia32-inl.h » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698