The Tor Browser: js/src/jit/shared/MoveEmitter-x86-shared.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=8 sts=4 et sw=4 tw=99:

     3  * This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef jit_MoveEmitter_x86_shared_h

     8 #define jit_MoveEmitter_x86_shared_h

    10 #if defined(JS_CODEGEN_X86)

    11 # include "jit/x86/MacroAssembler-x86.h"

    12 #elif defined(JS_CODEGEN_X64)

    13 # include "jit/x64/MacroAssembler-x64.h"

    14 #else

    15 # error "Wrong architecture. Only x86 and x64 should build this file!"

    16 #endif

    17 #include "jit/MoveResolver.h"

    19 namespace js {

    20 namespace jit {

    22 class CodeGenerator;

    24 class MoveEmitterX86

    25 {

    26     bool inCycle_;

    27     MacroAssemblerSpecific &masm;

    29     // Original stack push value.

    30     uint32_t pushedAtStart_;

    32     // This is a store stack offset for the cycle-break spill slot, snapshotting

    33     // codegen->framePushed_ at the time it is allocated. -1 if not allocated.

    34     int32_t pushedAtCycle_;

    36     void assertDone();

    37     Address cycleSlot();

    38     Address toAddress(const MoveOperand &operand) const;

    39     Operand toOperand(const MoveOperand &operand) const;

    40     Operand toPopOperand(const MoveOperand &operand) const;

    42     size_t characterizeCycle(const MoveResolver &moves, size_t i,

    43                              bool *allGeneralRegs, bool *allFloatRegs);

    44     bool maybeEmitOptimizedCycle(const MoveResolver &moves, size_t i,

    45                                  bool allGeneralRegs, bool allFloatRegs, size_t swapCount);

    46     void emitInt32Move(const MoveOperand &from, const MoveOperand &to);

    47     void emitGeneralMove(const MoveOperand &from, const MoveOperand &to);

    48     void emitFloat32Move(const MoveOperand &from, const MoveOperand &to);

    49     void emitDoubleMove(const MoveOperand &from, const MoveOperand &to);

    50     void breakCycle(const MoveOperand &to, MoveOp::Type type);

    51     void completeCycle(const MoveOperand &to, MoveOp::Type type);

    53   public:

    54     MoveEmitterX86(MacroAssemblerSpecific &masm);

    55     ~MoveEmitterX86();

    56     void emit(const MoveResolver &moves);

    57     void finish();

    58 };

    60 typedef MoveEmitterX86 MoveEmitter;

    62 } // ion

    63 } // js

    65 #endif /* jit_MoveEmitter_x86_shared_h */

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