2009-09-07 09:44:29 +00:00
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// Copyright 2006-2009 the V8 project authors. All rights reserved.
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2008-07-03 15:10:15 +00:00
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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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2009-05-04 13:36:43 +00:00
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#ifndef V8_ARM_MACRO_ASSEMBLER_ARM_H_
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#define V8_ARM_MACRO_ASSEMBLER_ARM_H_
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2008-07-03 15:10:15 +00:00
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#include "assembler.h"
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2009-05-25 10:05:56 +00:00
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namespace v8 {
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namespace internal {
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2008-07-03 15:10:15 +00:00
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2010-02-04 09:11:43 +00:00
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// ----------------------------------------------------------------------------
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// Static helper functions
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// Generate a MemOperand for loading a field from an object.
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static inline MemOperand FieldMemOperand(Register object, int offset) {
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return MemOperand(object, offset - kHeapObjectTag);
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}
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2008-07-03 15:10:15 +00:00
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// Give alias names to registers
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2009-06-10 15:08:25 +00:00
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const Register cp = { 8 }; // JavaScript context pointer
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2010-02-04 09:11:43 +00:00
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const Register roots = { 10 }; // Roots array pointer.
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2008-07-03 15:10:15 +00:00
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enum InvokeJSFlags {
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CALL_JS,
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JUMP_JS
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};
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2009-09-07 09:44:29 +00:00
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2008-07-03 15:10:15 +00:00
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// MacroAssembler implements a collection of frequently used macros.
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class MacroAssembler: public Assembler {
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public:
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MacroAssembler(void* buffer, int size);
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2010-02-04 21:32:02 +00:00
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// Jump, Call, and Ret pseudo instructions implementing inter-working.
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2008-07-03 15:10:15 +00:00
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void Jump(Register target, Condition cond = al);
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2008-09-22 13:57:03 +00:00
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void Jump(byte* target, RelocInfo::Mode rmode, Condition cond = al);
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void Jump(Handle<Code> code, RelocInfo::Mode rmode, Condition cond = al);
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2008-07-03 15:10:15 +00:00
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void Call(Register target, Condition cond = al);
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2008-09-22 13:57:03 +00:00
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void Call(byte* target, RelocInfo::Mode rmode, Condition cond = al);
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void Call(Handle<Code> code, RelocInfo::Mode rmode, Condition cond = al);
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2009-04-16 09:30:23 +00:00
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void Ret(Condition cond = al);
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2010-01-12 08:48:26 +00:00
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// Emit code to discard a non-negative number of pointer-sized elements
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// from the stack, clobbering only the sp register.
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void Drop(int count, Condition cond = al);
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2010-04-08 22:30:30 +00:00
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// Swap two registers. If the scratch register is omitted then a slightly
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// less efficient form using xor instead of mov is emitted.
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void Swap(Register reg1, Register reg2, Register scratch = no_reg);
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2009-12-10 14:06:08 +00:00
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void Call(Label* target);
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void Move(Register dst, Handle<Object> value);
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2010-04-08 22:30:30 +00:00
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// May do nothing if the registers are identical.
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void Move(Register dst, Register src);
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2008-12-10 08:37:58 +00:00
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// Jumps to the label at the index given by the Smi in "index".
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void SmiJumpTable(Register index, Vector<Label*> targets);
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2009-08-24 11:57:57 +00:00
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// Load an object from the root table.
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void LoadRoot(Register destination,
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Heap::RootListIndex index,
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Condition cond = al);
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2008-10-03 12:04:59 +00:00
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2008-07-03 15:10:15 +00:00
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// Sets the remembered set bit for [address+offset], where address is the
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// address of the heap object 'object'. The address must be in the first 8K
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// of an allocated page. The 'scratch' register is used in the
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// implementation and all 3 registers are clobbered by the operation, as
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// well as the ip register.
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void RecordWrite(Register object, Register offset, Register scratch);
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2010-04-26 14:25:29 +00:00
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// Push two registers. Pushes leftmost register first (to highest address).
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void Push(Register src1, Register src2, Condition cond = al) {
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ASSERT(!src1.is(src2));
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if (src1.code() > src2.code()) {
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stm(db_w, sp, src1.bit() | src2.bit(), cond);
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} else {
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str(src1, MemOperand(sp, 4, NegPreIndex), cond);
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str(src2, MemOperand(sp, 4, NegPreIndex), cond);
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}
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}
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// Push three registers. Pushes leftmost register first (to highest address).
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void Push(Register src1, Register src2, Register src3, Condition cond = al) {
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ASSERT(!src1.is(src2));
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ASSERT(!src2.is(src3));
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ASSERT(!src1.is(src3));
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if (src1.code() > src2.code()) {
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if (src2.code() > src3.code()) {
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stm(db_w, sp, src1.bit() | src2.bit() | src3.bit(), cond);
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} else {
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stm(db_w, sp, src1.bit() | src2.bit(), cond);
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str(src3, MemOperand(sp, 4, NegPreIndex), cond);
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}
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} else {
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str(src1, MemOperand(sp, 4, NegPreIndex), cond);
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Push(src2, src3, cond);
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}
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}
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// Push four registers. Pushes leftmost register first (to highest address).
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void Push(Register src1, Register src2,
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Register src3, Register src4, Condition cond = al) {
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ASSERT(!src1.is(src2));
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ASSERT(!src2.is(src3));
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ASSERT(!src1.is(src3));
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ASSERT(!src1.is(src4));
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ASSERT(!src2.is(src4));
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ASSERT(!src3.is(src4));
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if (src1.code() > src2.code()) {
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if (src2.code() > src3.code()) {
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if (src3.code() > src4.code()) {
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stm(db_w,
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sp,
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src1.bit() | src2.bit() | src3.bit() | src4.bit(),
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cond);
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} else {
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stm(db_w, sp, src1.bit() | src2.bit() | src3.bit(), cond);
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str(src4, MemOperand(sp, 4, NegPreIndex), cond);
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}
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} else {
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stm(db_w, sp, src1.bit() | src2.bit(), cond);
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Push(src3, src4, cond);
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}
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} else {
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str(src1, MemOperand(sp, 4, NegPreIndex), cond);
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Push(src2, src3, src4, cond);
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}
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}
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2009-11-25 09:05:30 +00:00
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// ---------------------------------------------------------------------------
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// Stack limit support
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void StackLimitCheck(Label* on_stack_limit_hit);
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2008-07-03 15:10:15 +00:00
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// ---------------------------------------------------------------------------
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// Activation frames
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2008-10-10 09:09:38 +00:00
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void EnterInternalFrame() { EnterFrame(StackFrame::INTERNAL); }
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void LeaveInternalFrame() { LeaveFrame(StackFrame::INTERNAL); }
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void EnterConstructFrame() { EnterFrame(StackFrame::CONSTRUCT); }
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void LeaveConstructFrame() { LeaveFrame(StackFrame::CONSTRUCT); }
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2008-09-23 08:19:26 +00:00
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2009-11-04 08:51:48 +00:00
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// Enter specific kind of exit frame; either normal or debug mode.
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// Expects the number of arguments in register r0 and
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2008-09-23 08:19:26 +00:00
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// the builtin function to call in register r1. Exits with argc in
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// r4, argv in r6, and and the builtin function to call in r5.
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2009-11-04 08:51:48 +00:00
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void EnterExitFrame(ExitFrame::Mode mode);
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2008-09-23 08:19:26 +00:00
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// Leave the current exit frame. Expects the return value in r0.
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2009-11-04 08:51:48 +00:00
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void LeaveExitFrame(ExitFrame::Mode mode);
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2008-07-03 15:10:15 +00:00
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2010-04-15 09:34:47 +00:00
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// Get the actual activation frame alignment for target environment.
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static int ActivationFrameAlignment();
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2008-07-03 15:10:15 +00:00
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2009-11-26 10:28:32 +00:00
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void LoadContext(Register dst, int context_chain_length);
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2008-08-06 10:02:49 +00:00
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// ---------------------------------------------------------------------------
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// JavaScript invokes
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// Invoke the JavaScript function code by either calling or jumping.
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void InvokeCode(Register code,
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const ParameterCount& expected,
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const ParameterCount& actual,
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InvokeFlag flag);
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void InvokeCode(Handle<Code> code,
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const ParameterCount& expected,
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const ParameterCount& actual,
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2008-09-22 13:57:03 +00:00
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RelocInfo::Mode rmode,
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2008-08-06 10:02:49 +00:00
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InvokeFlag flag);
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// Invoke the JavaScript function in the given register. Changes the
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// current context to the context in the function before invoking.
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void InvokeFunction(Register function,
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const ParameterCount& actual,
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InvokeFlag flag);
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2010-02-15 12:32:27 +00:00
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void InvokeFunction(JSFunction* function,
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const ParameterCount& actual,
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InvokeFlag flag);
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2008-09-12 03:29:06 +00:00
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2009-04-20 16:36:13 +00:00
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#ifdef ENABLE_DEBUGGER_SUPPORT
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2008-07-03 15:10:15 +00:00
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// ---------------------------------------------------------------------------
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// Debugger Support
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void SaveRegistersToMemory(RegList regs);
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void RestoreRegistersFromMemory(RegList regs);
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void CopyRegistersFromMemoryToStack(Register base, RegList regs);
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void CopyRegistersFromStackToMemory(Register base,
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Register scratch,
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RegList regs);
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2010-02-08 13:44:49 +00:00
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void DebugBreak();
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2009-04-20 16:36:13 +00:00
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#endif
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2008-07-03 15:10:15 +00:00
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// ---------------------------------------------------------------------------
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// Exception handling
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// Push a new try handler and link into try handler chain.
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// The return address must be passed in register lr.
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// On exit, r0 contains TOS (code slot).
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void PushTryHandler(CodeLocation try_location, HandlerType type);
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2009-12-10 14:06:08 +00:00
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// Unlink the stack handler on top of the stack from the try handler chain.
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// Must preserve the result register.
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void PopTryHandler();
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2008-07-03 15:10:15 +00:00
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// ---------------------------------------------------------------------------
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// Inline caching support
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// Generates code that verifies that the maps of objects in the
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// prototype chain of object hasn't changed since the code was
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// generated and branches to the miss label if any map has. If
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// necessary the function also generates code for security check
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// in case of global object holders. The scratch and holder
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// registers are always clobbered, but the object register is only
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// clobbered if it the same as the holder register. The function
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// returns a register containing the holder - either object_reg or
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// holder_reg.
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Register CheckMaps(JSObject* object, Register object_reg,
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JSObject* holder, Register holder_reg,
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Register scratch, Label* miss);
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// Generate code for checking access rights - used for security checks
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// on access to global objects across environments. The holder register
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// is left untouched, whereas both scratch registers are clobbered.
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2008-10-21 20:11:50 +00:00
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void CheckAccessGlobalProxy(Register holder_reg,
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Register scratch,
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Label* miss);
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2008-07-03 15:10:15 +00:00
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2009-09-01 07:36:46 +00:00
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// ---------------------------------------------------------------------------
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// Allocation support
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2009-09-02 11:13:44 +00:00
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// Allocate an object in new space. The object_size is specified in words (not
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// bytes). If the new space is exhausted control continues at the gc_required
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// label. The allocated object is returned in result. If the flag
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// tag_allocated_object is true the result is tagged as as a heap object.
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2009-09-30 09:24:46 +00:00
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void AllocateInNewSpace(int object_size,
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Register result,
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Register scratch1,
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Register scratch2,
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Label* gc_required,
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AllocationFlags flags);
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void AllocateInNewSpace(Register object_size,
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Register result,
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Register scratch1,
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Register scratch2,
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Label* gc_required,
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AllocationFlags flags);
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2009-09-02 11:13:44 +00:00
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// Undo allocation in new space. The object passed and objects allocated after
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// it will no longer be allocated. The caller must make sure that no pointers
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// are left to the object(s) no longer allocated as they would be invalid when
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// allocation is undone.
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void UndoAllocationInNewSpace(Register object, Register scratch);
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2009-09-01 07:36:46 +00:00
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2010-02-04 09:11:43 +00:00
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void AllocateTwoByteString(Register result,
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Register length,
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Register scratch1,
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Register scratch2,
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Register scratch3,
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Label* gc_required);
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void AllocateAsciiString(Register result,
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Register length,
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Register scratch1,
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Register scratch2,
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Register scratch3,
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Label* gc_required);
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2010-02-05 12:00:42 +00:00
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void AllocateTwoByteConsString(Register result,
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Register length,
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Register scratch1,
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Register scratch2,
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Label* gc_required);
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void AllocateAsciiConsString(Register result,
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Register length,
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Register scratch1,
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Register scratch2,
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Label* gc_required);
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2010-02-04 09:11:43 +00:00
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2010-03-23 13:38:04 +00:00
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// Allocates a heap number or jumps to the need_gc label if the young space
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// is full and a scavenge is needed.
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void AllocateHeapNumber(Register result,
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Register scratch1,
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Register scratch2,
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Label* gc_required);
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2010-02-04 09:11:43 +00:00
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2008-10-06 06:41:10 +00:00
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// ---------------------------------------------------------------------------
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// Support functions.
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2009-06-10 11:42:13 +00:00
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// Try to get function prototype of a function and puts the value in
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// the result register. Checks that the function really is a
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// function and jumps to the miss label if the fast checks fail. The
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|
// function register will be untouched; the other registers may be
|
|
|
|
// clobbered.
|
|
|
|
void TryGetFunctionPrototype(Register function,
|
|
|
|
Register result,
|
|
|
|
Register scratch,
|
|
|
|
Label* miss);
|
|
|
|
|
|
|
|
// Compare object type for heap object. heap_object contains a non-Smi
|
|
|
|
// whose object type should be compared with the given type. This both
|
|
|
|
// sets the flags and leaves the object type in the type_reg register.
|
|
|
|
// It leaves the map in the map register (unless the type_reg and map register
|
|
|
|
// are the same register). It leaves the heap object in the heap_object
|
|
|
|
// register unless the heap_object register is the same register as one of the
|
2009-09-02 11:13:44 +00:00
|
|
|
// other registers.
|
2009-06-10 11:42:13 +00:00
|
|
|
void CompareObjectType(Register heap_object,
|
|
|
|
Register map,
|
|
|
|
Register type_reg,
|
|
|
|
InstanceType type);
|
|
|
|
|
2009-09-02 11:13:44 +00:00
|
|
|
// Compare instance type in a map. map contains a valid map object whose
|
|
|
|
// object type should be compared with the given type. This both
|
|
|
|
// sets the flags and leaves the object type in the type_reg register. It
|
|
|
|
// leaves the heap object in the heap_object register unless the heap_object
|
|
|
|
// register is the same register as type_reg.
|
|
|
|
void CompareInstanceType(Register map,
|
|
|
|
Register type_reg,
|
|
|
|
InstanceType type);
|
|
|
|
|
2010-02-04 09:11:43 +00:00
|
|
|
|
2010-02-05 13:57:18 +00:00
|
|
|
// Check if the map of an object is equal to a specified map and
|
|
|
|
// branch to label if not. Skip the smi check if not required
|
|
|
|
// (object is known to be a heap object)
|
|
|
|
void CheckMap(Register obj,
|
|
|
|
Register scratch,
|
|
|
|
Handle<Map> map,
|
|
|
|
Label* fail,
|
|
|
|
bool is_heap_object);
|
|
|
|
|
2010-02-04 09:11:43 +00:00
|
|
|
// Load and check the instance type of an object for being a string.
|
|
|
|
// Loads the type into the second argument register.
|
|
|
|
// Returns a condition that will be enabled if the object was a string.
|
|
|
|
Condition IsObjectStringType(Register obj,
|
|
|
|
Register type) {
|
|
|
|
ldr(type, FieldMemOperand(obj, HeapObject::kMapOffset));
|
|
|
|
ldrb(type, FieldMemOperand(type, Map::kInstanceTypeOffset));
|
|
|
|
tst(type, Operand(kIsNotStringMask));
|
|
|
|
ASSERT_EQ(0, kStringTag);
|
|
|
|
return eq;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-06-10 11:42:13 +00:00
|
|
|
inline void BranchOnSmi(Register value, Label* smi_label) {
|
|
|
|
tst(value, Operand(kSmiTagMask));
|
|
|
|
b(eq, smi_label);
|
|
|
|
}
|
|
|
|
|
|
|
|
inline void BranchOnNotSmi(Register value, Label* not_smi_label) {
|
|
|
|
tst(value, Operand(kSmiTagMask));
|
|
|
|
b(ne, not_smi_label);
|
|
|
|
}
|
|
|
|
|
2008-10-06 06:41:10 +00:00
|
|
|
// Generates code for reporting that an illegal operation has
|
|
|
|
// occurred.
|
|
|
|
void IllegalOperation(int num_arguments);
|
|
|
|
|
2010-02-05 08:46:41 +00:00
|
|
|
// Get the number of least significant bits from a register
|
|
|
|
void GetLeastBitsFromSmi(Register dst, Register src, int num_least_bits);
|
|
|
|
|
2009-11-12 13:55:21 +00:00
|
|
|
// Uses VFP instructions to Convert a Smi to a double.
|
|
|
|
void IntegerToDoubleConversionWithVFP3(Register inReg,
|
|
|
|
Register outHighReg,
|
|
|
|
Register outLowReg);
|
|
|
|
|
2010-03-23 13:38:04 +00:00
|
|
|
// Count leading zeros in a 32 bit word. On ARM5 and later it uses the clz
|
|
|
|
// instruction. On pre-ARM5 hardware this routine gives the wrong answer
|
|
|
|
// for 0 (31 instead of 32).
|
|
|
|
void CountLeadingZeros(Register source,
|
|
|
|
Register scratch,
|
|
|
|
Register zeros);
|
2008-10-06 06:41:10 +00:00
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// Runtime calls
|
|
|
|
|
|
|
|
// Call a code stub.
|
2009-08-26 10:27:32 +00:00
|
|
|
void CallStub(CodeStub* stub, Condition cond = al);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2010-02-05 12:00:42 +00:00
|
|
|
// Call a code stub.
|
|
|
|
void TailCallStub(CodeStub* stub, Condition cond = al);
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// Return from a code stub after popping its arguments.
|
|
|
|
void StubReturn(int argc);
|
|
|
|
|
|
|
|
// Call a runtime routine.
|
|
|
|
void CallRuntime(Runtime::Function* f, int num_arguments);
|
|
|
|
|
|
|
|
// Convenience function: Same as above, but takes the fid instead.
|
|
|
|
void CallRuntime(Runtime::FunctionId fid, int num_arguments);
|
|
|
|
|
2010-02-15 12:32:27 +00:00
|
|
|
// Convenience function: call an external reference.
|
|
|
|
void CallExternalReference(const ExternalReference& ext,
|
|
|
|
int num_arguments);
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// Tail call of a runtime routine (jump).
|
2010-02-24 08:33:51 +00:00
|
|
|
// Like JumpToExternalReference, but also takes care of passing the number
|
2008-08-13 09:32:07 +00:00
|
|
|
// of parameters.
|
2010-02-24 08:33:51 +00:00
|
|
|
void TailCallExternalReference(const ExternalReference& ext,
|
|
|
|
int num_arguments,
|
|
|
|
int result_size);
|
|
|
|
|
|
|
|
// Convenience function: tail call a runtime routine (jump).
|
|
|
|
void TailCallRuntime(Runtime::FunctionId fid,
|
2009-09-08 11:52:05 +00:00
|
|
|
int num_arguments,
|
|
|
|
int result_size);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2010-04-09 11:25:52 +00:00
|
|
|
// Before calling a C-function from generated code, align arguments on stack.
|
|
|
|
// After aligning the frame, non-register arguments must be stored in
|
|
|
|
// sp[0], sp[4], etc., not pushed. The argument count assumes all arguments
|
|
|
|
// are word sized.
|
|
|
|
// Some compilers/platforms require the stack to be aligned when calling
|
|
|
|
// C++ code.
|
|
|
|
// Needs a scratch register to do some arithmetic. This register will be
|
|
|
|
// trashed.
|
|
|
|
void PrepareCallCFunction(int num_arguments, Register scratch);
|
|
|
|
|
|
|
|
// Calls a C function and cleans up the space for arguments allocated
|
|
|
|
// by PrepareCallCFunction. The called function is not allowed to trigger a
|
|
|
|
// garbage collection, since that might move the code and invalidate the
|
|
|
|
// return address (unless this is somehow accounted for by the called
|
|
|
|
// function).
|
|
|
|
void CallCFunction(ExternalReference function, int num_arguments);
|
|
|
|
void CallCFunction(Register function, int num_arguments);
|
|
|
|
|
2009-09-28 13:53:43 +00:00
|
|
|
// Jump to a runtime routine.
|
2010-02-24 08:33:51 +00:00
|
|
|
void JumpToExternalReference(const ExternalReference& builtin);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
// Invoke specified builtin JavaScript function. Adds an entry to
|
|
|
|
// the unresolved list if the name does not resolve.
|
2008-09-12 03:29:06 +00:00
|
|
|
void InvokeBuiltin(Builtins::JavaScript id, InvokeJSFlags flags);
|
|
|
|
|
|
|
|
// Store the code object for the given builtin in the target register and
|
|
|
|
// setup the function in r1.
|
|
|
|
void GetBuiltinEntry(Register target, Builtins::JavaScript id);
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2009-02-25 16:52:15 +00:00
|
|
|
Handle<Object> CodeObject() { return code_object_; }
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2008-11-20 16:59:00 +00:00
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// StatsCounter support
|
|
|
|
|
|
|
|
void SetCounter(StatsCounter* counter, int value,
|
|
|
|
Register scratch1, Register scratch2);
|
|
|
|
void IncrementCounter(StatsCounter* counter, int value,
|
|
|
|
Register scratch1, Register scratch2);
|
|
|
|
void DecrementCounter(StatsCounter* counter, int value,
|
|
|
|
Register scratch1, Register scratch2);
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// Debugging
|
|
|
|
|
|
|
|
// Calls Abort(msg) if the condition cc is not satisfied.
|
|
|
|
// Use --debug_code to enable.
|
|
|
|
void Assert(Condition cc, const char* msg);
|
|
|
|
|
|
|
|
// Like Assert(), but always enabled.
|
|
|
|
void Check(Condition cc, const char* msg);
|
|
|
|
|
|
|
|
// Print a message to stdout and abort execution.
|
|
|
|
void Abort(const char* msg);
|
|
|
|
|
|
|
|
// Verify restrictions about code generated in stubs.
|
|
|
|
void set_generating_stub(bool value) { generating_stub_ = value; }
|
|
|
|
bool generating_stub() { return generating_stub_; }
|
2008-07-30 08:49:36 +00:00
|
|
|
void set_allow_stub_calls(bool value) { allow_stub_calls_ = value; }
|
|
|
|
bool allow_stub_calls() { return allow_stub_calls_; }
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2010-02-05 12:00:42 +00:00
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// Smi utilities
|
|
|
|
|
|
|
|
// Jump if either of the registers contain a non-smi.
|
|
|
|
void JumpIfNotBothSmi(Register reg1, Register reg2, Label* on_not_both_smi);
|
|
|
|
// Jump if either of the registers contain a smi.
|
|
|
|
void JumpIfEitherSmi(Register reg1, Register reg2, Label* on_either_smi);
|
|
|
|
|
2010-01-21 12:10:56 +00:00
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
// String utilities
|
|
|
|
|
|
|
|
// Checks if both objects are sequential ASCII strings and jumps to label
|
|
|
|
// if either is not. Assumes that neither object is a smi.
|
|
|
|
void JumpIfNonSmisNotBothSequentialAsciiStrings(Register object1,
|
|
|
|
Register object2,
|
|
|
|
Register scratch1,
|
|
|
|
Register scratch2,
|
2010-03-17 14:53:16 +00:00
|
|
|
Label* failure);
|
2010-01-21 12:10:56 +00:00
|
|
|
|
|
|
|
// Checks if both objects are sequential ASCII strings and jumps to label
|
|
|
|
// if either is not.
|
|
|
|
void JumpIfNotBothSequentialAsciiStrings(Register first,
|
|
|
|
Register second,
|
|
|
|
Register scratch1,
|
|
|
|
Register scratch2,
|
|
|
|
Label* not_flat_ascii_strings);
|
|
|
|
|
2010-03-08 11:58:33 +00:00
|
|
|
// Checks if both instance types are sequential ASCII strings and jumps to
|
|
|
|
// label if either is not.
|
|
|
|
void JumpIfBothInstanceTypesAreNotSequentialAscii(
|
|
|
|
Register first_object_instance_type,
|
|
|
|
Register second_object_instance_type,
|
|
|
|
Register scratch1,
|
|
|
|
Register scratch2,
|
|
|
|
Label* failure);
|
|
|
|
|
|
|
|
// Check if instance type is sequential ASCII string and jump to label if
|
|
|
|
// it is not.
|
|
|
|
void JumpIfInstanceTypeIsNotSequentialAscii(Register type,
|
|
|
|
Register scratch,
|
|
|
|
Label* failure);
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
private:
|
2010-02-04 21:32:02 +00:00
|
|
|
void Jump(intptr_t target, RelocInfo::Mode rmode, Condition cond = al);
|
|
|
|
void Call(intptr_t target, RelocInfo::Mode rmode, Condition cond = al);
|
2008-09-12 03:29:06 +00:00
|
|
|
|
|
|
|
// Helper functions for generating invokes.
|
|
|
|
void InvokePrologue(const ParameterCount& expected,
|
|
|
|
const ParameterCount& actual,
|
|
|
|
Handle<Code> code_constant,
|
|
|
|
Register code_reg,
|
|
|
|
Label* done,
|
|
|
|
InvokeFlag flag);
|
|
|
|
|
2008-10-10 09:09:38 +00:00
|
|
|
// Activation support.
|
|
|
|
void EnterFrame(StackFrame::Type type);
|
|
|
|
void LeaveFrame(StackFrame::Type type);
|
2010-02-04 21:32:02 +00:00
|
|
|
|
|
|
|
bool generating_stub_;
|
|
|
|
bool allow_stub_calls_;
|
|
|
|
// This handle will be patched with the code object on installation.
|
|
|
|
Handle<Object> code_object_;
|
2008-07-03 15:10:15 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
2009-09-14 06:57:24 +00:00
|
|
|
#ifdef ENABLE_DEBUGGER_SUPPORT
|
|
|
|
// The code patcher is used to patch (typically) small parts of code e.g. for
|
|
|
|
// debugging and other types of instrumentation. When using the code patcher
|
|
|
|
// the exact number of bytes specified must be emitted. It is not legal to emit
|
|
|
|
// relocation information. If any of these constraints are violated it causes
|
|
|
|
// an assertion to fail.
|
|
|
|
class CodePatcher {
|
|
|
|
public:
|
|
|
|
CodePatcher(byte* address, int instructions);
|
|
|
|
virtual ~CodePatcher();
|
|
|
|
|
|
|
|
// Macro assembler to emit code.
|
|
|
|
MacroAssembler* masm() { return &masm_; }
|
|
|
|
|
|
|
|
// Emit an instruction directly.
|
|
|
|
void Emit(Instr x);
|
|
|
|
|
|
|
|
// Emit an address directly.
|
|
|
|
void Emit(Address addr);
|
|
|
|
|
|
|
|
private:
|
|
|
|
byte* address_; // The address of the code being patched.
|
|
|
|
int instructions_; // Number of instructions of the expected patch size.
|
|
|
|
int size_; // Number of bytes of the expected patch size.
|
|
|
|
MacroAssembler masm_; // Macro assembler used to generate the code.
|
|
|
|
};
|
|
|
|
#endif // ENABLE_DEBUGGER_SUPPORT
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Static helper functions.
|
|
|
|
|
2009-04-21 13:42:12 +00:00
|
|
|
#ifdef GENERATED_CODE_COVERAGE
|
|
|
|
#define CODE_COVERAGE_STRINGIFY(x) #x
|
|
|
|
#define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
|
|
|
|
#define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
|
|
|
|
#define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
|
|
|
|
#else
|
|
|
|
#define ACCESS_MASM(masm) masm->
|
|
|
|
#endif
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
} } // namespace v8::internal
|
|
|
|
|
2009-05-04 13:36:43 +00:00
|
|
|
#endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_
|