c174657e9e
MakeCode functions in the CompilationInfo structure. This makes it easier to add new arguments and makes all arguments uniformly available to the various backends. Review URL: http://codereview.chromium.org/566008 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3789 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
139 lines
4.7 KiB
C++
139 lines
4.7 KiB
C++
// Copyright 2010 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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#include "codegen-inl.h"
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#include "fast-codegen.h"
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namespace v8 {
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namespace internal {
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#define __ ACCESS_MASM(masm())
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void FastCodeGenerator::EmitLoadReceiver(Register reg) {
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// Offset 2 is due to return address and saved frame pointer.
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int index = 2 + scope()->num_parameters();
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__ movq(reg, Operand(rbp, index * kPointerSize));
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}
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void FastCodeGenerator::EmitReceiverMapCheck() {
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Comment cmnt(masm(), ";; MapCheck(this)");
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if (FLAG_print_ir) {
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PrintF("MapCheck(this)\n");
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}
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EmitLoadReceiver(rdx);
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__ JumpIfSmi(rdx, bailout());
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ASSERT(has_receiver() && receiver()->IsHeapObject());
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Handle<HeapObject> object = Handle<HeapObject>::cast(receiver());
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Handle<Map> map(object->map());
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__ Cmp(FieldOperand(rdx, HeapObject::kMapOffset), map);
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__ j(not_equal, bailout());
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}
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void FastCodeGenerator::EmitGlobalVariableLoad(Handle<String> name) {
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// Compile global variable accesses as load IC calls. The only live
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// registers are rsi (context) and possibly rdx (this). Both are also
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// saved in the stack and rsi is preserved by the call.
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__ push(CodeGenerator::GlobalObject());
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__ Move(rcx, name);
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Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize));
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__ Call(ic, RelocInfo::CODE_TARGET_CONTEXT);
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if (has_this_properties()) {
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// Restore this.
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EmitLoadReceiver(rdx);
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} else {
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__ nop(); // Not test rax, indicates IC has no inlined code at call site.
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}
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}
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void FastCodeGenerator::EmitThisPropertyStore(Handle<String> name) {
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LookupResult lookup;
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receiver()->Lookup(*name, &lookup);
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ASSERT(lookup.holder() == *receiver());
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ASSERT(lookup.type() == FIELD);
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Handle<Map> map(Handle<HeapObject>::cast(receiver())->map());
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int index = lookup.GetFieldIndex() - map->inobject_properties();
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int offset = index * kPointerSize;
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// Negative offsets are inobject properties.
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if (offset < 0) {
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offset += map->instance_size();
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__ movq(rcx, rdx); // Copy receiver for write barrier.
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} else {
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offset += FixedArray::kHeaderSize;
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__ movq(rcx, FieldOperand(rdx, JSObject::kPropertiesOffset));
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}
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// Perform the store.
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__ movq(FieldOperand(rcx, offset), rax);
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// Preserve value from write barrier in case it's needed.
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__ movq(rbx, rax);
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__ RecordWrite(rcx, offset, rbx, rdi);
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}
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void FastCodeGenerator::Generate(CompilationInfo* info) {
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ASSERT(info_ == NULL);
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info_ = info;
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// Save the caller's frame pointer and set up our own.
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Comment prologue_cmnt(masm(), ";; Prologue");
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__ push(rbp);
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__ movq(rbp, rsp);
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__ push(rsi); // Context.
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__ push(rdi); // Closure.
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// Note that we keep a live register reference to esi (context) at this
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// point.
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// Receiver (this) is allocated to rdx if there are this properties.
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if (has_this_properties()) EmitReceiverMapCheck();
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VisitStatements(info->function()->body());
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Comment return_cmnt(masm(), ";; Return(<undefined>)");
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__ LoadRoot(rax, Heap::kUndefinedValueRootIndex);
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Comment epilogue_cmnt(masm(), ";; Epilogue");
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__ movq(rsp, rbp);
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__ pop(rbp);
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__ ret((scope()->num_parameters() + 1) * kPointerSize);
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__ bind(&bailout_);
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}
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#undef __
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} } // namespace v8::internal
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