The Tor Browser: js/src/jit/arm/BaselineRegisters-arm.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_arm_BaselineRegisters_arm_h

     8 #define jit_arm_BaselineRegisters_arm_h

    10 #ifdef JS_ION

    12 #include "jit/IonMacroAssembler.h"

    14 namespace js {

    15 namespace jit {

    17 // r15 = program-counter

    18 // r14 = link-register

    20 // r13 = stack-pointer

    21 // r11 = frame-pointer

    22 static MOZ_CONSTEXPR_VAR Register BaselineFrameReg = r11;

    23 static MOZ_CONSTEXPR_VAR Register BaselineStackReg = sp;

    25 // ValueOperands R0, R1, and R2.

    26 // R0 == JSReturnReg, and R2 uses registers not

    27 // preserved across calls.  R1 value should be

    28 // preserved across calls.

    29 static MOZ_CONSTEXPR_VAR ValueOperand R0(r3, r2);

    30 static MOZ_CONSTEXPR_VAR ValueOperand R1(r5, r4);

    31 static MOZ_CONSTEXPR_VAR ValueOperand R2(r1, r0);

    33 // BaselineTailCallReg and BaselineStubReg

    34 // These use registers that are not preserved across

    35 // calls.

    36 static MOZ_CONSTEXPR_VAR Register BaselineTailCallReg = r14;

    37 static MOZ_CONSTEXPR_VAR Register BaselineStubReg     = r9;

    39 static MOZ_CONSTEXPR_VAR Register ExtractTemp0        = InvalidReg;

    40 static MOZ_CONSTEXPR_VAR Register ExtractTemp1        = InvalidReg;

    42 // Register used internally by MacroAssemblerARM.

    43 static MOZ_CONSTEXPR_VAR Register BaselineSecondScratchReg = r6;

    45 // R7 - R9 are generally available for use within stubcode.

    47 // Note that BaselineTailCallReg is actually just the link

    48 // register.  In ARM code emission, we do not clobber BaselineTailCallReg

    49 // since we keep the return address for calls there.

    51 // FloatReg0 must be equal to ReturnFloatReg.

    52 static MOZ_CONSTEXPR_VAR FloatRegister FloatReg0      = d0;

    53 static MOZ_CONSTEXPR_VAR FloatRegister FloatReg1      = d1;

    55 } // namespace jit

    56 } // namespace js

    58 #endif // JS_ION

    60 #endif /* jit_arm_BaselineRegisters_arm_h */

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