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comparison: js/src/jit/Registers.h
js/src/jit/Registers.h
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| -1:000000000000 | 0:085fec8daaf8 |
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| 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/. */ | |
| 6 | |
| 7 #ifndef jit_Registers_h | |
| 8 #define jit_Registers_h | |
| 9 | |
| 10 #include "mozilla/Array.h" | |
| 11 | |
| 12 #include "jit/IonTypes.h" | |
| 13 #if defined(JS_CODEGEN_X86) | |
| 14 # include "jit/x86/Architecture-x86.h" | |
| 15 #elif defined(JS_CODEGEN_X64) | |
| 16 # include "jit/x64/Architecture-x64.h" | |
| 17 #elif defined(JS_CODEGEN_ARM) | |
| 18 # include "jit/arm/Architecture-arm.h" | |
| 19 #elif defined(JS_CODEGEN_MIPS) | |
| 20 # include "jit/mips/Architecture-mips.h" | |
| 21 #else | |
| 22 # error "Unknown architecture!" | |
| 23 #endif | |
| 24 | |
| 25 namespace js { | |
| 26 namespace jit { | |
| 27 | |
| 28 struct Register { | |
| 29 typedef Registers Codes; | |
| 30 typedef Codes::Code Code; | |
| 31 Code code_; | |
| 32 | |
| 33 static Register FromCode(uint32_t i) { | |
| 34 JS_ASSERT(i < Registers::Total); | |
| 35 Register r = { (Registers::Code)i }; | |
| 36 return r; | |
| 37 } | |
| 38 static Register FromName(const char *name) { | |
| 39 Registers::Code code = Registers::FromName(name); | |
| 40 Register r = { code }; | |
| 41 return r; | |
| 42 } | |
| 43 Code code() const { | |
| 44 JS_ASSERT((uint32_t)code_ < Registers::Total); | |
| 45 return code_; | |
| 46 } | |
| 47 const char *name() const { | |
| 48 return Registers::GetName(code()); | |
| 49 } | |
| 50 bool operator ==(const Register &other) const { | |
| 51 return code_ == other.code_; | |
| 52 } | |
| 53 bool operator !=(const Register &other) const { | |
| 54 return code_ != other.code_; | |
| 55 } | |
| 56 bool volatile_() const { | |
| 57 return !!((1 << code()) & Registers::VolatileMask); | |
| 58 } | |
| 59 }; | |
| 60 | |
| 61 struct FloatRegister { | |
| 62 typedef FloatRegisters Codes; | |
| 63 typedef Codes::Code Code; | |
| 64 | |
| 65 Code code_; | |
| 66 | |
| 67 static FloatRegister FromCode(uint32_t i) { | |
| 68 JS_ASSERT(i < FloatRegisters::Total); | |
| 69 FloatRegister r = { (FloatRegisters::Code)i }; | |
| 70 return r; | |
| 71 } | |
| 72 static FloatRegister FromName(const char *name) { | |
| 73 FloatRegisters::Code code = FloatRegisters::FromName(name); | |
| 74 FloatRegister r = { code }; | |
| 75 return r; | |
| 76 } | |
| 77 Code code() const { | |
| 78 JS_ASSERT((uint32_t)code_ < FloatRegisters::Total); | |
| 79 return code_; | |
| 80 } | |
| 81 const char *name() const { | |
| 82 return FloatRegisters::GetName(code()); | |
| 83 } | |
| 84 bool operator ==(const FloatRegister &other) const { | |
| 85 return code_ == other.code_; | |
| 86 } | |
| 87 bool operator !=(const FloatRegister &other) const { | |
| 88 return code_ != other.code_; | |
| 89 } | |
| 90 bool volatile_() const { | |
| 91 return !!((1 << code()) & FloatRegisters::VolatileMask); | |
| 92 } | |
| 93 }; | |
| 94 | |
| 95 class RegisterDump | |
| 96 { | |
| 97 protected: // Silence Clang warning. | |
| 98 mozilla::Array<uintptr_t, Registers::Total> regs_; | |
| 99 mozilla::Array<double, FloatRegisters::Total> fpregs_; | |
| 100 | |
| 101 public: | |
| 102 static size_t offsetOfRegister(Register reg) { | |
| 103 return offsetof(RegisterDump, regs_) + reg.code() * sizeof(uintptr_t); | |
| 104 } | |
| 105 static size_t offsetOfRegister(FloatRegister reg) { | |
| 106 return offsetof(RegisterDump, fpregs_) + reg.code() * sizeof(double); | |
| 107 } | |
| 108 }; | |
| 109 | |
| 110 // Information needed to recover machine register state. | |
| 111 class MachineState | |
| 112 { | |
| 113 mozilla::Array<uintptr_t *, Registers::Total> regs_; | |
| 114 mozilla::Array<double *, FloatRegisters::Total> fpregs_; | |
| 115 | |
| 116 public: | |
| 117 static MachineState FromBailout(mozilla::Array<uintptr_t, Registers::Total> ®s, | |
| 118 mozilla::Array<double, FloatRegisters::Total> &fpregs); | |
| 119 | |
| 120 void setRegisterLocation(Register reg, uintptr_t *up) { | |
| 121 regs_[reg.code()] = up; | |
| 122 } | |
| 123 void setRegisterLocation(FloatRegister reg, double *dp) { | |
| 124 fpregs_[reg.code()] = dp; | |
| 125 } | |
| 126 | |
| 127 bool has(Register reg) const { | |
| 128 return regs_[reg.code()] != nullptr; | |
| 129 } | |
| 130 bool has(FloatRegister reg) const { | |
| 131 return fpregs_[reg.code()] != nullptr; | |
| 132 } | |
| 133 uintptr_t read(Register reg) const { | |
| 134 return *regs_[reg.code()]; | |
| 135 } | |
| 136 double read(FloatRegister reg) const { | |
| 137 return *fpregs_[reg.code()]; | |
| 138 } | |
| 139 void write(Register reg, uintptr_t value) const { | |
| 140 *regs_[reg.code()] = value; | |
| 141 } | |
| 142 }; | |
| 143 | |
| 144 } // namespace jit | |
| 145 } // namespace js | |
| 146 | |
| 147 #endif /* jit_Registers_h */ |
