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// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_CODEGEN_ARM_REGLIST_ARM_H_
#define V8_CODEGEN_ARM_REGLIST_ARM_H_
#include "src/codegen/register-arch.h"
#include "src/codegen/reglist-base.h"
namespace v8 {
namespace internal {
using RegList = RegListBase<Register>;
using DoubleRegList = RegListBase<DoubleRegister>;
ASSERT_TRIVIALLY_COPYABLE(RegList);
ASSERT_TRIVIALLY_COPYABLE(DoubleRegList);
// Register list in load/store instructions
// Note that the bit values must match those used in actual instruction encoding
// Caller-saved/arguments registers
const RegList kJSCallerSaved = {r0, // r0 a1
r1, // r1 a2
r2, // r2 a3
r3}; // r3 a4
const int kNumJSCallerSaved = 4;
// Callee-saved registers preserved when switching from C to JavaScript
const RegList kCalleeSaved = {r4, // r4 v1
r5, // r5 v2
r6, // r6 v3
r7, // r7 v4 (cp in JavaScript code)
r8, // r8 v5 (pp in JavaScript code)
r9, // r9 v6
r10, // r10 v7
r11}; // r11 v8 (fp in JavaScript code)
// When calling into C++ (only for C++ calls that can't cause a GC).
// The call code will take care of lr, fp, etc.
const RegList kCallerSaved = {r0, // r0
r1, // r1
r2, // r2
r3, // r3
r9}; // r9
const int kNumCalleeSaved = 8;
// Double registers d8 to d15 are callee-saved.
const int kNumDoubleCalleeSaved = 8;
} // namespace internal
} // namespace v8
#endif // V8_CODEGEN_ARM_REGLIST_ARM_H_
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