Index: src/arm/fast-codegen-arm.cc |
=================================================================== |
--- src/arm/fast-codegen-arm.cc (revision 0) |
+++ src/arm/fast-codegen-arm.cc (revision 0) |
@@ -0,0 +1,152 @@ |
+// Copyright 2009 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. |
+ |
+#include "v8.h" |
+ |
+#include "codegen-inl.h" |
+#include "fast-codegen.h" |
+ |
+namespace v8 { |
+namespace internal { |
+ |
+#define __ ACCESS_MASM(masm_) |
+ |
+// Generate code for a JS function. On entry to the function the receiver |
+// and arguments have been pushed on the stack left to right. The actual |
+// argument count matches the formal parameter count expected by the |
+// function. |
+// |
+// The live registers are: |
+// o r1: the JS function object being called (ie, ourselves) |
+// o cp: our context |
+// o fp: our caller's frame pointer |
+// o sp: stack pointer |
+// o lr: return address |
+// |
+// The function builds a JS frame. Please see JavaScriptFrameConstants in |
+// frames-arm.h for its layout. |
+void FastCodeGenerator::Generate(FunctionLiteral* fun) { |
+ function_ = fun; |
+ |
+ __ stm(db_w, sp, r1.bit() | cp.bit() | fp.bit() | lr.bit()); |
+ // Adjust fp to point to caller's fp. |
+ __ add(fp, sp, Operand(2 * kPointerSize)); |
+ |
+ { Comment cmnt(masm_, "[ Allocate locals"); |
+ int locals_count = fun->scope()->num_stack_slots(); |
+ if (locals_count > 0) { |
+ __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
+ } |
+ if (FLAG_check_stack) { |
+ __ LoadRoot(r2, Heap::kStackLimitRootIndex); |
+ } |
+ for (int i = 0; i < locals_count; i++) { |
+ __ push(ip); |
+ } |
+ } |
+ |
+ if (FLAG_check_stack) { |
+ // Put the lr setup instruction in the delay slot. The kInstrSize is |
+ // added to the implicit 8 byte offset that always applies to operations |
+ // with pc and gives a return address 12 bytes down. |
+ Comment cmnt(masm_, "[ Stack check"); |
+ __ add(lr, pc, Operand(Assembler::kInstrSize)); |
+ __ cmp(sp, Operand(r2)); |
+ StackCheckStub stub; |
+ __ mov(pc, |
+ Operand(reinterpret_cast<intptr_t>(stub.GetCode().location()), |
+ RelocInfo::CODE_TARGET), |
+ LeaveCC, |
+ lo); |
+ } |
+ |
+ { Comment cmnt(masm_, "[ Body"); |
+ VisitStatements(fun->body()); |
+ } |
+ |
+ { Comment cmnt(masm_, "[ return <undefined>;"); |
+ // Emit a 'return undefined' in case control fell off the end of the |
+ // body. |
+ __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); |
+ __ RecordJSReturn(); |
+ __ mov(sp, fp); |
+ __ ldm(ia_w, sp, fp.bit() | lr.bit()); |
+ int num_parameters = function_->scope()->num_parameters(); |
+ __ add(sp, sp, Operand((num_parameters + 1) * kPointerSize)); |
+ __ Jump(lr); |
+ } |
+} |
+ |
+ |
+void FastCodeGenerator::VisitExpressionStatement(ExpressionStatement* stmt) { |
+ Comment cmnt(masm_, "[ ExpressionStatement"); |
+ Visit(stmt->expression()); |
+ __ pop(); |
+} |
+ |
+ |
+void FastCodeGenerator::VisitReturnStatement(ReturnStatement* stmt) { |
+ Comment cmnt(masm_, "[ ReturnStatement"); |
+ Visit(stmt->expression()); |
+ __ pop(r0); |
+ __ RecordJSReturn(); |
+ __ mov(sp, fp); |
+ __ ldm(ia_w, sp, fp.bit() | lr.bit()); |
+ int num_parameters = function_->scope()->num_parameters(); |
+ __ add(sp, sp, Operand((num_parameters + 1) * kPointerSize)); |
+ __ Jump(lr); |
+} |
+ |
+ |
+void FastCodeGenerator::VisitSlot(Slot* expr) { |
+ Comment cmnt(masm_, "[ Slot"); |
+ __ ldr(ip, MemOperand(fp, SlotOffset(expr))); |
+ __ push(ip); |
+} |
+ |
+ |
+void FastCodeGenerator::VisitLiteral(Literal* expr) { |
+ Comment cmnt(masm_, "[ Literal"); |
+ __ mov(ip, Operand(expr->handle())); |
+ __ push(ip); |
+} |
+ |
+ |
+void FastCodeGenerator::VisitAssignment(Assignment* expr) { |
+ Comment cmnt(masm_, "[ Assignment"); |
+ ASSERT(expr->op() == Token::ASSIGN || expr->op() == Token::INIT_VAR); |
+ |
+ Visit(expr->value()); |
+ |
+ Variable* var = expr->target()->AsVariableProxy()->AsVariable(); |
+ ASSERT(var != NULL && var->slot() != NULL); |
+ __ ldr(ip, MemOperand(sp)); |
+ __ str(ip, MemOperand(fp, SlotOffset(var->slot()))); |
+} |
+ |
+ |
+} } // namespace v8::internal |