SharedICRegisters-arm.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-

 * vim: set ts=8 sts=2 et sw=2 tw=80:

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

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

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

#ifndef jit_arm_SharedICRegisters_arm_h

#define jit_arm_SharedICRegisters_arm_h

#include "jit/arm/Assembler-arm.h"

#include "jit/Registers.h"

#include "jit/RegisterSets.h"

namespace js {

namespace jit {

// r15 = program-counter

// r14 = link-register

// r13 = stack-pointer

// r11 = frame-pointer

// ValueOperands R0, R1, and R2.

// R0 == JSReturnReg, and R2 uses registers not preserved across calls. R1 value

// should be preserved across calls.

static constexpr ValueOperand R0(r3, r2);

static constexpr ValueOperand R1(r5, r4);

static constexpr ValueOperand R2(r1, r0);

// ICTailCallReg and ICStubReg

// These use registers that are not preserved across calls.

static constexpr Register ICTailCallReg = r14;

static constexpr Register ICStubReg = r9;

// Register used internally by MacroAssemblerARM.

static constexpr Register BaselineSecondScratchReg = r6;

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

// Note that ICTailCallReg is actually just the link register. In ARM code

// emission, we do not clobber ICTailCallReg since we keep the return

// address for calls there.

// FloatReg0 must be equal to ReturnFloatReg.

static constexpr FloatRegister FloatReg0 = d0;

static constexpr FloatRegister FloatReg1 = d1;

static constexpr FloatRegister FloatReg2 = d2;

static constexpr FloatRegister FloatReg3 = d3;

}  // namespace jit

}  // namespace js

#endif /* jit_arm_SharedICRegisters_arm_h */