100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee/* 200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * Copyright (C) 2014 The Android Open Source Project 300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * Licensed under the Apache License, Version 2.0 (the "License"); 500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * you may not use this file except in compliance with the License. 600e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * You may obtain a copy of the License at 700e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 800e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * http://www.apache.org/licenses/LICENSE-2.0 900e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 1000e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * Unless required by applicable law or agreed to in writing, software 1100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * distributed under the License is distributed on an "AS IS" BASIS, 1200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * See the License for the specific language governing permissions and 1400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * limitations under the License. 1500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee */ 1600e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 1700e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee#ifndef ART_COMPILER_DEX_REG_STORAGE_H_ 1800e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee#define ART_COMPILER_DEX_REG_STORAGE_H_ 1900e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 20836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko#include "base/logging.h" 21ccc60264229ac96d798528d2cb7dbbdd0deca993Andreas Gampe#include "compiler_enums.h" // For WideKind 2200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 2300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbeenamespace art { 2400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 2500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee/* 26091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 16-bit representation of the physical register container holding a Dalvik value. 27d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee * The encoding allows up to 64 physical elements per storage class, and supports eight 28091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * register container shapes. 2900e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 30d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee * [V] [HHHHH] [SSS] [F] [LLLLLL] 3100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 32d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee * [LLLLLL] 33091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * Physical register number for the low or solo register. 34d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee * 0..63 3500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 36091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * [F] 37091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * Describes type of the [LLLLL] register. 38091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 0: Core 39091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 1: Floating point 4000e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 41091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * [SSS] 42091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * Shape of the register container. 43091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 000: Invalid 44091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 001: 32-bit solo register 45091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 010: 64-bit solo register 46091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 011: 64-bit pair consisting of two 32-bit solo registers 47091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 100: 128-bit solo register 48091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 101: 256-bit solo register 49091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 110: 512-bit solo register 50091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 111: 1024-bit solo register 5100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 52091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * [HHHHH] 53091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * Physical register number of the high register (valid only for register pair). 54091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 0..31 5500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee * 56091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * [V] 57091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 0 -> Invalid 58091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 1 -> Valid 59091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 60091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * Note that in all non-invalid cases, we can determine if the storage is floating point 61d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee * by testing bit 7. Note also that a register pair is effectively limited to a pair of 62d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee * physical register numbers in the 0..31 range. 63091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * 64091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * On some target architectures, the same underlying physical register container can be given 65091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * different views. For example, Arm's 32-bit single-precision floating point registers 66091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * s2 and s3 map to the low and high halves of double-precision d1. Similarly, X86's xmm3 67091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * vector register can be viewed as 32-bit, 64-bit, 128-bit, etc. In these cases the use of 68091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * one view will affect the other views. The RegStorage class does not concern itself 69091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * with potential aliasing. That will be done using the associated RegisterInfo struct. 70091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * Distinct RegStorage elements should be created for each view of a physical register 71091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * container. The management of the aliased physical elements will be handled via RegisterInfo 72091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee * records. 7300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee */ 7400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 7500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbeeclass RegStorage { 7600e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee public: 7700e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee enum RegStorageKind { 78091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee kValidMask = 0x8000, 79091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee kValid = 0x8000, 80091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee kInvalid = 0x0000, 81d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee kShapeMask = 0x0380, 82d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k32BitSolo = 0x0080, 83d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k64BitSolo = 0x0100, 84d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k64BitPair = 0x0180, 85d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k128BitSolo = 0x0200, 86d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k256BitSolo = 0x0280, 87d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k512BitSolo = 0x0300, 88d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k1024BitSolo = 0x0380, 89d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k64BitMask = 0x0300, 90d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee k64Bits = 0x0100, 91d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee kShapeTypeMask = 0x03c0, 92d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee kFloatingPoint = 0x0040, 93091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee kCoreRegister = 0x0000, 9400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee }; 9500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 96d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee static const uint16_t kRegValMask = 0x03ff; // Num, type and shape. 97d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee static const uint16_t kRegTypeMask = 0x007f; // Num and type. 98d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee static const uint16_t kRegNumMask = 0x003f; // Num only. 99d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee static const uint16_t kHighRegNumMask = 0x001f; // 0..31 for high reg 100091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee static const uint16_t kMaxRegs = kRegValMask + 1; 101d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee // TODO: deprecate use of kInvalidRegVal and speed up GetReg(). Rely on valid bit instead. 102d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee static const uint16_t kInvalidRegVal = 0x03ff; 103d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee static const uint16_t kHighRegShift = 10; 104d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee static const uint16_t kHighRegMask = (kHighRegNumMask << kHighRegShift); 10500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 106091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Reg is [F][LLLLL], will override any existing shape and use rs_kind. 107836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr RegStorage(RegStorageKind rs_kind, int reg) 108836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko : reg_( 109836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko DCHECK_CONSTEXPR(rs_kind != k64BitPair, , 0u) 110836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko DCHECK_CONSTEXPR((rs_kind & ~kShapeMask) == 0, , 0u) 111836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko kValid | rs_kind | (reg & kRegTypeMask)) { 112836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko } 113836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr RegStorage(RegStorageKind rs_kind, int low_reg, int high_reg) 114836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko : reg_( 115836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko DCHECK_CONSTEXPR(rs_kind == k64BitPair, << rs_kind, 0u) 116836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko DCHECK_CONSTEXPR((low_reg & kFloatingPoint) == (high_reg & kFloatingPoint), 117836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko << low_reg << ", " << high_reg, 0u) 118836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko DCHECK_CONSTEXPR((high_reg & kRegNumMask) <= kHighRegNumMask, 119836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko << "High reg must be in 0..31: " << high_reg, false) 120836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko kValid | rs_kind | ((high_reg & kHighRegNumMask) << kHighRegShift) | 121836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko (low_reg & kRegTypeMask)) { 12200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 123091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee constexpr explicit RegStorage(uint16_t val) : reg_(val) {} 12400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee RegStorage() : reg_(kInvalid) {} 12500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 126b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee // We do not provide a general operator overload for equality of reg storage, as this is 127b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee // dangerous in the case of architectures with multiple views, and the naming ExactEquals 128b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee // expresses the exact match expressed here. It is more likely that a comparison between the views 129b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee // is intended in most cases. Such code can be found in, for example, Mir2Lir::IsSameReg. 130b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee // 131b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee // If you know what you are doing, include reg_storage_eq.h, which defines == and != for brevity. 132b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee 133b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee bool ExactlyEquals(const RegStorage& rhs) const { 1342700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee return (reg_ == rhs.GetRawBits()); 1352700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 1362700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 137b5860fb459f1ed71f39d8a87b45bee6727d79fe8buzbee bool NotExactlyEquals(const RegStorage& rhs) const { 1382700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee return (reg_ != rhs.GetRawBits()); 1392700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 1402700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 141836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool Valid() const { 142091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return ((reg_ & kValidMask) == kValid); 14300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 14400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 145836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool Is32Bit() const { 146091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return ((reg_ & kShapeMask) == k32BitSolo); 14700e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 14800e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 149836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool Is64Bit() const { 150091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return ((reg_ & k64BitMask) == k64Bits); 15100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 15200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 153ccc60264229ac96d798528d2cb7dbbdd0deca993Andreas Gampe constexpr WideKind GetWideKind() const { 154ccc60264229ac96d798528d2cb7dbbdd0deca993Andreas Gampe return Is64Bit() ? kWide : kNotWide; 155ccc60264229ac96d798528d2cb7dbbdd0deca993Andreas Gampe } 156ccc60264229ac96d798528d2cb7dbbdd0deca993Andreas Gampe 157836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool Is64BitSolo() const { 1589ee801f5308aa3c62ae3bedae2658612762ffb91Dmitry Petrochenko return ((reg_ & kShapeMask) == k64BitSolo); 1599ee801f5308aa3c62ae3bedae2658612762ffb91Dmitry Petrochenko } 1609ee801f5308aa3c62ae3bedae2658612762ffb91Dmitry Petrochenko 161836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool IsPair() const { 162091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return ((reg_ & kShapeMask) == k64BitPair); 16300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 16400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 165836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool IsFloat() const { 166836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko return 167836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko DCHECK_CONSTEXPR(Valid(), , false) 168836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko ((reg_ & kFloatingPoint) == kFloatingPoint); 16900e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 17000e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 171836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool IsDouble() const { 172836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko return 173836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko DCHECK_CONSTEXPR(Valid(), , false) 174836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko (reg_ & (kFloatingPoint | k64BitMask)) == (kFloatingPoint | k64Bits); 175091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 176091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 177836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool IsSingle() const { 178836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko return 179836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko DCHECK_CONSTEXPR(Valid(), , false) 180836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko (reg_ & (kFloatingPoint | k64BitMask)) == kFloatingPoint; 181091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 182091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 183836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr bool IsFloat(uint16_t reg) { 184091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return ((reg & kFloatingPoint) == kFloatingPoint); 185091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 186091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 187836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr bool IsDouble(uint16_t reg) { 188091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return (reg & (kFloatingPoint | k64BitMask)) == (kFloatingPoint | k64Bits); 189091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 190091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 191836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr bool IsSingle(uint16_t reg) { 192091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return (reg & (kFloatingPoint | k64BitMask)) == kFloatingPoint; 19300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 19400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 19563999683329612292d534e6be09dbde9480f1250Serban Constantinescu static constexpr bool Is32Bit(uint16_t reg) { 19663999683329612292d534e6be09dbde9480f1250Serban Constantinescu return ((reg & kShapeMask) == k32BitSolo); 19763999683329612292d534e6be09dbde9480f1250Serban Constantinescu } 19863999683329612292d534e6be09dbde9480f1250Serban Constantinescu 19963999683329612292d534e6be09dbde9480f1250Serban Constantinescu static constexpr bool Is64Bit(uint16_t reg) { 20063999683329612292d534e6be09dbde9480f1250Serban Constantinescu return ((reg & k64BitMask) == k64Bits); 20163999683329612292d534e6be09dbde9480f1250Serban Constantinescu } 20263999683329612292d534e6be09dbde9480f1250Serban Constantinescu 20363999683329612292d534e6be09dbde9480f1250Serban Constantinescu static constexpr bool Is64BitSolo(uint16_t reg) { 20463999683329612292d534e6be09dbde9480f1250Serban Constantinescu return ((reg & kShapeMask) == k64BitSolo); 20563999683329612292d534e6be09dbde9480f1250Serban Constantinescu } 20663999683329612292d534e6be09dbde9480f1250Serban Constantinescu 20700e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee // Used to retrieve either the low register of a pair, or the only register. 20800e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee int GetReg() const { 209091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee DCHECK(!IsPair()) << "reg_ = 0x" << std::hex << reg_; 2102700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee return Valid() ? (reg_ & kRegValMask) : kInvalidRegVal; 21100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 21200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 213091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Sets shape, type and num of solo. 21400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee void SetReg(int reg) { 2152700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(Valid()); 216091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee DCHECK(!IsPair()); 2172700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee reg_ = (reg_ & ~kRegValMask) | reg; 2182700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 2192700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 220091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Set the reg number and type only, target remain 64-bit pair. 2212700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee void SetLowReg(int reg) { 2222700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(IsPair()); 223091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee reg_ = (reg_ & ~kRegTypeMask) | (reg & kRegTypeMask); 2242700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 2252700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 226091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Retrieve the least significant register of a pair and return as 32-bit solo. 2272700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee int GetLowReg() const { 2282700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(IsPair()); 229091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return ((reg_ & kRegTypeMask) | k32BitSolo); 2302700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 2312700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 2322700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee // Create a stand-alone RegStorage from the low reg of a pair. 2332700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee RegStorage GetLow() const { 2342700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(IsPair()); 235091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return RegStorage(k32BitSolo, reg_ & kRegTypeMask); 23600e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 23700e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 23800e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee // Retrieve the most significant register of a pair. 23900e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee int GetHighReg() const { 24000e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee DCHECK(IsPair()); 241d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee return k32BitSolo | ((reg_ & kHighRegMask) >> kHighRegShift) | (reg_ & kFloatingPoint); 24200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 24300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 2442700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee // Create a stand-alone RegStorage from the high reg of a pair. 2452700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee RegStorage GetHigh() const { 2462700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(IsPair()); 247091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return RegStorage(kValid | GetHighReg()); 2482700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 2492700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 25000e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee void SetHighReg(int reg) { 25100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee DCHECK(IsPair()); 252d111c6eeb01955964d9c7f68126adcb1e1824ab3buzbee reg_ = (reg_ & ~kHighRegMask) | ((reg & kHighRegNumMask) << kHighRegShift); 253091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 254091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 255091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Return the register number of low or solo. 256836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr int GetRegNum() const { 257091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return reg_ & kRegNumMask; 258091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 259091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 260091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Is register number in 0..7? 261836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool Low8() const { 262091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return GetRegNum() < 8; 263091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 264091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 265091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Is register number in 0..3? 266836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr bool Low4() const { 267091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return GetRegNum() < 4; 26800e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 26900e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 2702700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee // Combine 2 32-bit solo regs into a pair. 2712700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee static RegStorage MakeRegPair(RegStorage low, RegStorage high) { 2722700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(!low.IsPair()); 2732700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(low.Is32Bit()); 2742700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(!high.IsPair()); 2752700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee DCHECK(high.Is32Bit()); 2762700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee return RegStorage(k64BitPair, low.GetReg(), high.GetReg()); 2772700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 2782700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 279836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr bool SameRegType(RegStorage reg1, RegStorage reg2) { 28063999683329612292d534e6be09dbde9480f1250Serban Constantinescu return ((reg1.reg_ & kShapeTypeMask) == (reg2.reg_ & kShapeTypeMask)); 281091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 282091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 283836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr bool SameRegType(int reg1, int reg2) { 28463999683329612292d534e6be09dbde9480f1250Serban Constantinescu return ((reg1 & kShapeTypeMask) == (reg2 & kShapeTypeMask)); 285091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 286091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 2872700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee // Create a 32-bit solo. 2882700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee static RegStorage Solo32(int reg_num) { 289091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return RegStorage(k32BitSolo, reg_num & kRegTypeMask); 290091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 291091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 292091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Create a floating point 32-bit solo. 293836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr RegStorage FloatSolo32(int reg_num) { 294091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return RegStorage(k32BitSolo, (reg_num & kRegNumMask) | kFloatingPoint); 2952700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 2962700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 297fe94578b63380f464c3abd5c156b7b31d068db6cMark Mendell // Create a 128-bit solo. 298836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr RegStorage Solo128(int reg_num) { 299fe94578b63380f464c3abd5c156b7b31d068db6cMark Mendell return RegStorage(k128BitSolo, reg_num & kRegTypeMask); 300fe94578b63380f464c3abd5c156b7b31d068db6cMark Mendell } 301fe94578b63380f464c3abd5c156b7b31d068db6cMark Mendell 3022700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee // Create a 64-bit solo. 303836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr RegStorage Solo64(int reg_num) { 304091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return RegStorage(k64BitSolo, reg_num & kRegTypeMask); 305091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 306091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 307091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee // Create a floating point 64-bit solo. 308091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee static RegStorage FloatSolo64(int reg_num) { 309091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return RegStorage(k64BitSolo, (reg_num & kRegNumMask) | kFloatingPoint); 3102700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 3112700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 312836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr RegStorage InvalidReg() { 3132700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee return RegStorage(kInvalid); 3142700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee } 3152700f7e1edbcd2518f4978e4cd0e05a4149f91b6buzbee 316836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko static constexpr uint16_t RegNum(int raw_reg_bits) { 317091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return raw_reg_bits & kRegNumMask; 318091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 319091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 320836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko constexpr int GetRawBits() const { 32100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee return reg_; 32200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee } 32300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 324836424805dd48af67088d30992a3f2e6841ca047Vladimir Marko size_t StorageSize() const { 325091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee switch (reg_ & kShapeMask) { 326091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee case kInvalid: return 0; 327091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee case k32BitSolo: return 4; 328091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee case k64BitSolo: return 8; 329091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee case k64BitPair: return 8; // Is this useful? Might want to disallow taking size of pair. 330091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee case k128BitSolo: return 16; 331091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee case k256BitSolo: return 32; 332091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee case k512BitSolo: return 64; 333091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee case k1024BitSolo: return 128; 334ed65c5e982705defdb597d94d1aa3f2997239c9bSerban Constantinescu default: LOG(FATAL) << "Unexpected shape"; 335091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 336091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee return 0; 337091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee } 338091cc408e9dc87e60fb64c61e186bea568fc3d3abuzbee 33900e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee private: 34000e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee uint16_t reg_; 34100e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee}; 34200e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 34300e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee} // namespace art 34400e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee 34500e1ec6581b5b7b46ca4c314c2854e9caa647dd2Bill Buzbee#endif // ART_COMPILER_DEX_REG_STORAGE_H_ 346