github.com/zebozhuang/go@v0.0.0-20200207033046-f8a98f6f5c5d/src/cmd/compile/internal/ssa/gen/ARMOps.go (about) 1 // Copyright 2016 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // +build ignore 6 7 package main 8 9 import "strings" 10 11 // Notes: 12 // - Integer types live in the low portion of registers. Upper portions are junk. 13 // - Boolean types use the low-order byte of a register. 0=false, 1=true. 14 // Upper bytes are junk. 15 // - *const instructions may use a constant larger than the instruction can encode. 16 // In this case the assembler expands to multiple instructions and uses tmp 17 // register (R11). 18 19 // Suffixes encode the bit width of various instructions. 20 // W (word) = 32 bit 21 // H (half word) = 16 bit 22 // HU = 16 bit unsigned 23 // B (byte) = 8 bit 24 // BU = 8 bit unsigned 25 // F (float) = 32 bit float 26 // D (double) = 64 bit float 27 28 var regNamesARM = []string{ 29 "R0", 30 "R1", 31 "R2", 32 "R3", 33 "R4", 34 "R5", 35 "R6", 36 "R7", 37 "R8", 38 "R9", 39 "g", // aka R10 40 "R11", // tmp 41 "R12", 42 "SP", // aka R13 43 "R14", // link 44 "R15", // pc 45 46 "F0", 47 "F1", 48 "F2", 49 "F3", 50 "F4", 51 "F5", 52 "F6", 53 "F7", 54 "F8", 55 "F9", 56 "F10", 57 "F11", 58 "F12", 59 "F13", 60 "F14", 61 "F15", // tmp 62 63 // pseudo-registers 64 "SB", 65 } 66 67 func init() { 68 // Make map from reg names to reg integers. 69 if len(regNamesARM) > 64 { 70 panic("too many registers") 71 } 72 num := map[string]int{} 73 for i, name := range regNamesARM { 74 num[name] = i 75 } 76 buildReg := func(s string) regMask { 77 m := regMask(0) 78 for _, r := range strings.Split(s, " ") { 79 if n, ok := num[r]; ok { 80 m |= regMask(1) << uint(n) 81 continue 82 } 83 panic("register " + r + " not found") 84 } 85 return m 86 } 87 88 // Common individual register masks 89 var ( 90 gp = buildReg("R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 R12 R14") 91 gpg = gp | buildReg("g") 92 gpsp = gp | buildReg("SP") 93 gpspg = gpg | buildReg("SP") 94 gpspsbg = gpspg | buildReg("SB") 95 fp = buildReg("F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15") 96 callerSave = gp | fp | buildReg("g") // runtime.setg (and anything calling it) may clobber g 97 ) 98 // Common regInfo 99 var ( 100 gp01 = regInfo{inputs: nil, outputs: []regMask{gp}} 101 gp11 = regInfo{inputs: []regMask{gpg}, outputs: []regMask{gp}} 102 gp11carry = regInfo{inputs: []regMask{gpg}, outputs: []regMask{gp, 0}} 103 gp11sp = regInfo{inputs: []regMask{gpspg}, outputs: []regMask{gp}} 104 gp1flags = regInfo{inputs: []regMask{gpg}} 105 gp1flags1 = regInfo{inputs: []regMask{gp}, outputs: []regMask{gp}} 106 gp21 = regInfo{inputs: []regMask{gpg, gpg}, outputs: []regMask{gp}} 107 gp21carry = regInfo{inputs: []regMask{gpg, gpg}, outputs: []regMask{gp, 0}} 108 gp2flags = regInfo{inputs: []regMask{gpg, gpg}} 109 gp2flags1 = regInfo{inputs: []regMask{gp, gp}, outputs: []regMask{gp}} 110 gp22 = regInfo{inputs: []regMask{gpg, gpg}, outputs: []regMask{gp, gp}} 111 gp31 = regInfo{inputs: []regMask{gp, gp, gp}, outputs: []regMask{gp}} 112 gp31carry = regInfo{inputs: []regMask{gp, gp, gp}, outputs: []regMask{gp, 0}} 113 gp3flags = regInfo{inputs: []regMask{gp, gp, gp}} 114 gp3flags1 = regInfo{inputs: []regMask{gp, gp, gp}, outputs: []regMask{gp}} 115 gpload = regInfo{inputs: []regMask{gpspsbg}, outputs: []regMask{gp}} 116 gpstore = regInfo{inputs: []regMask{gpspsbg, gpg}} 117 gp2load = regInfo{inputs: []regMask{gpspsbg, gpg}, outputs: []regMask{gp}} 118 gp2store = regInfo{inputs: []regMask{gpspsbg, gpg, gpg}} 119 fp01 = regInfo{inputs: nil, outputs: []regMask{fp}} 120 fp11 = regInfo{inputs: []regMask{fp}, outputs: []regMask{fp}} 121 fp1flags = regInfo{inputs: []regMask{fp}} 122 fpgp = regInfo{inputs: []regMask{fp}, outputs: []regMask{gp}, clobbers: buildReg("F15")} // int-float conversion uses F15 as tmp 123 gpfp = regInfo{inputs: []regMask{gp}, outputs: []regMask{fp}, clobbers: buildReg("F15")} 124 fp21 = regInfo{inputs: []regMask{fp, fp}, outputs: []regMask{fp}} 125 fp2flags = regInfo{inputs: []regMask{fp, fp}} 126 fpload = regInfo{inputs: []regMask{gpspsbg}, outputs: []regMask{fp}} 127 fpstore = regInfo{inputs: []regMask{gpspsbg, fp}} 128 readflags = regInfo{inputs: nil, outputs: []regMask{gp}} 129 ) 130 ops := []opData{ 131 // binary ops 132 {name: "ADD", argLength: 2, reg: gp21, asm: "ADD", commutative: true}, // arg0 + arg1 133 {name: "ADDconst", argLength: 1, reg: gp11sp, asm: "ADD", aux: "Int32"}, // arg0 + auxInt 134 {name: "SUB", argLength: 2, reg: gp21, asm: "SUB"}, // arg0 - arg1 135 {name: "SUBconst", argLength: 1, reg: gp11, asm: "SUB", aux: "Int32"}, // arg0 - auxInt 136 {name: "RSB", argLength: 2, reg: gp21, asm: "RSB"}, // arg1 - arg0 137 {name: "RSBconst", argLength: 1, reg: gp11, asm: "RSB", aux: "Int32"}, // auxInt - arg0 138 {name: "MUL", argLength: 2, reg: gp21, asm: "MUL", commutative: true}, // arg0 * arg1 139 {name: "HMUL", argLength: 2, reg: gp21, asm: "MULL", commutative: true}, // (arg0 * arg1) >> 32, signed 140 {name: "HMULU", argLength: 2, reg: gp21, asm: "MULLU", commutative: true}, // (arg0 * arg1) >> 32, unsigned 141 142 // udiv runtime call for soft division 143 // output0 = arg0/arg1, output1 = arg0%arg1 144 // see ../../../../../runtime/vlop_arm.s 145 { 146 name: "CALLudiv", 147 argLength: 2, 148 reg: regInfo{ 149 inputs: []regMask{buildReg("R1"), buildReg("R0")}, 150 outputs: []regMask{buildReg("R0"), buildReg("R1")}, 151 clobbers: buildReg("R2 R3 R14"), // also clobbers R12 on NaCl (modified in ../config.go) 152 }, 153 clobberFlags: true, 154 typ: "(UInt32,UInt32)", 155 call: false, // TODO(mdempsky): Should this be true? 156 }, 157 158 {name: "ADDS", argLength: 2, reg: gp21carry, asm: "ADD", commutative: true}, // arg0 + arg1, set carry flag 159 {name: "ADDSconst", argLength: 1, reg: gp11carry, asm: "ADD", aux: "Int32"}, // arg0 + auxInt, set carry flag 160 {name: "ADC", argLength: 3, reg: gp2flags1, asm: "ADC", commutative: true}, // arg0 + arg1 + carry, arg2=flags 161 {name: "ADCconst", argLength: 2, reg: gp1flags1, asm: "ADC", aux: "Int32"}, // arg0 + auxInt + carry, arg1=flags 162 {name: "SUBS", argLength: 2, reg: gp21carry, asm: "SUB"}, // arg0 - arg1, set carry flag 163 {name: "SUBSconst", argLength: 1, reg: gp11carry, asm: "SUB", aux: "Int32"}, // arg0 - auxInt, set carry flag 164 {name: "RSBSconst", argLength: 1, reg: gp11carry, asm: "RSB", aux: "Int32"}, // auxInt - arg0, set carry flag 165 {name: "SBC", argLength: 3, reg: gp2flags1, asm: "SBC"}, // arg0 - arg1 - carry, arg2=flags 166 {name: "SBCconst", argLength: 2, reg: gp1flags1, asm: "SBC", aux: "Int32"}, // arg0 - auxInt - carry, arg1=flags 167 {name: "RSCconst", argLength: 2, reg: gp1flags1, asm: "RSC", aux: "Int32"}, // auxInt - arg0 - carry, arg1=flags 168 169 {name: "MULLU", argLength: 2, reg: gp22, asm: "MULLU", commutative: true}, // arg0 * arg1, high 32 bits in out0, low 32 bits in out1 170 {name: "MULA", argLength: 3, reg: gp31, asm: "MULA"}, // arg0 * arg1 + arg2 171 172 {name: "ADDF", argLength: 2, reg: fp21, asm: "ADDF", commutative: true}, // arg0 + arg1 173 {name: "ADDD", argLength: 2, reg: fp21, asm: "ADDD", commutative: true}, // arg0 + arg1 174 {name: "SUBF", argLength: 2, reg: fp21, asm: "SUBF"}, // arg0 - arg1 175 {name: "SUBD", argLength: 2, reg: fp21, asm: "SUBD"}, // arg0 - arg1 176 {name: "MULF", argLength: 2, reg: fp21, asm: "MULF", commutative: true}, // arg0 * arg1 177 {name: "MULD", argLength: 2, reg: fp21, asm: "MULD", commutative: true}, // arg0 * arg1 178 {name: "DIVF", argLength: 2, reg: fp21, asm: "DIVF"}, // arg0 / arg1 179 {name: "DIVD", argLength: 2, reg: fp21, asm: "DIVD"}, // arg0 / arg1 180 181 {name: "AND", argLength: 2, reg: gp21, asm: "AND", commutative: true}, // arg0 & arg1 182 {name: "ANDconst", argLength: 1, reg: gp11, asm: "AND", aux: "Int32"}, // arg0 & auxInt 183 {name: "OR", argLength: 2, reg: gp21, asm: "ORR", commutative: true}, // arg0 | arg1 184 {name: "ORconst", argLength: 1, reg: gp11, asm: "ORR", aux: "Int32"}, // arg0 | auxInt 185 {name: "XOR", argLength: 2, reg: gp21, asm: "EOR", commutative: true}, // arg0 ^ arg1 186 {name: "XORconst", argLength: 1, reg: gp11, asm: "EOR", aux: "Int32"}, // arg0 ^ auxInt 187 {name: "BIC", argLength: 2, reg: gp21, asm: "BIC"}, // arg0 &^ arg1 188 {name: "BICconst", argLength: 1, reg: gp11, asm: "BIC", aux: "Int32"}, // arg0 &^ auxInt 189 190 // unary ops 191 {name: "MVN", argLength: 1, reg: gp11, asm: "MVN"}, // ^arg0 192 193 {name: "NEGF", argLength: 1, reg: fp11, asm: "NEGF"}, // -arg0, float32 194 {name: "NEGD", argLength: 1, reg: fp11, asm: "NEGD"}, // -arg0, float64 195 {name: "SQRTD", argLength: 1, reg: fp11, asm: "SQRTD"}, // sqrt(arg0), float64 196 197 {name: "CLZ", argLength: 1, reg: gp11, asm: "CLZ"}, // count leading zero 198 {name: "REV", argLength: 1, reg: gp11, asm: "REV"}, // reverse byte order 199 {name: "RBIT", argLength: 1, reg: gp11, asm: "RBIT"}, // reverse bit order 200 201 // shifts 202 {name: "SLL", argLength: 2, reg: gp21, asm: "SLL"}, // arg0 << arg1, shift amount is mod 256 203 {name: "SLLconst", argLength: 1, reg: gp11, asm: "SLL", aux: "Int32"}, // arg0 << auxInt 204 {name: "SRL", argLength: 2, reg: gp21, asm: "SRL"}, // arg0 >> arg1, unsigned, shift amount is mod 256 205 {name: "SRLconst", argLength: 1, reg: gp11, asm: "SRL", aux: "Int32"}, // arg0 >> auxInt, unsigned 206 {name: "SRA", argLength: 2, reg: gp21, asm: "SRA"}, // arg0 >> arg1, signed, shift amount is mod 256 207 {name: "SRAconst", argLength: 1, reg: gp11, asm: "SRA", aux: "Int32"}, // arg0 >> auxInt, signed 208 {name: "SRRconst", argLength: 1, reg: gp11, aux: "Int32"}, // arg0 right rotate by auxInt bits 209 210 {name: "ADDshiftLL", argLength: 2, reg: gp21, asm: "ADD", aux: "Int32"}, // arg0 + arg1<<auxInt 211 {name: "ADDshiftRL", argLength: 2, reg: gp21, asm: "ADD", aux: "Int32"}, // arg0 + arg1>>auxInt, unsigned shift 212 {name: "ADDshiftRA", argLength: 2, reg: gp21, asm: "ADD", aux: "Int32"}, // arg0 + arg1>>auxInt, signed shift 213 {name: "SUBshiftLL", argLength: 2, reg: gp21, asm: "SUB", aux: "Int32"}, // arg0 - arg1<<auxInt 214 {name: "SUBshiftRL", argLength: 2, reg: gp21, asm: "SUB", aux: "Int32"}, // arg0 - arg1>>auxInt, unsigned shift 215 {name: "SUBshiftRA", argLength: 2, reg: gp21, asm: "SUB", aux: "Int32"}, // arg0 - arg1>>auxInt, signed shift 216 {name: "RSBshiftLL", argLength: 2, reg: gp21, asm: "RSB", aux: "Int32"}, // arg1<<auxInt - arg0 217 {name: "RSBshiftRL", argLength: 2, reg: gp21, asm: "RSB", aux: "Int32"}, // arg1>>auxInt - arg0, unsigned shift 218 {name: "RSBshiftRA", argLength: 2, reg: gp21, asm: "RSB", aux: "Int32"}, // arg1>>auxInt - arg0, signed shift 219 {name: "ANDshiftLL", argLength: 2, reg: gp21, asm: "AND", aux: "Int32"}, // arg0 & (arg1<<auxInt) 220 {name: "ANDshiftRL", argLength: 2, reg: gp21, asm: "AND", aux: "Int32"}, // arg0 & (arg1>>auxInt), unsigned shift 221 {name: "ANDshiftRA", argLength: 2, reg: gp21, asm: "AND", aux: "Int32"}, // arg0 & (arg1>>auxInt), signed shift 222 {name: "ORshiftLL", argLength: 2, reg: gp21, asm: "ORR", aux: "Int32"}, // arg0 | arg1<<auxInt 223 {name: "ORshiftRL", argLength: 2, reg: gp21, asm: "ORR", aux: "Int32"}, // arg0 | arg1>>auxInt, unsigned shift 224 {name: "ORshiftRA", argLength: 2, reg: gp21, asm: "ORR", aux: "Int32"}, // arg0 | arg1>>auxInt, signed shift 225 {name: "XORshiftLL", argLength: 2, reg: gp21, asm: "EOR", aux: "Int32"}, // arg0 ^ arg1<<auxInt 226 {name: "XORshiftRL", argLength: 2, reg: gp21, asm: "EOR", aux: "Int32"}, // arg0 ^ arg1>>auxInt, unsigned shift 227 {name: "XORshiftRA", argLength: 2, reg: gp21, asm: "EOR", aux: "Int32"}, // arg0 ^ arg1>>auxInt, signed shift 228 {name: "XORshiftRR", argLength: 2, reg: gp21, asm: "EOR", aux: "Int32"}, // arg0 ^ (arg1 right rotate by auxInt) 229 {name: "BICshiftLL", argLength: 2, reg: gp21, asm: "BIC", aux: "Int32"}, // arg0 &^ (arg1<<auxInt) 230 {name: "BICshiftRL", argLength: 2, reg: gp21, asm: "BIC", aux: "Int32"}, // arg0 &^ (arg1>>auxInt), unsigned shift 231 {name: "BICshiftRA", argLength: 2, reg: gp21, asm: "BIC", aux: "Int32"}, // arg0 &^ (arg1>>auxInt), signed shift 232 {name: "MVNshiftLL", argLength: 1, reg: gp11, asm: "MVN", aux: "Int32"}, // ^(arg0<<auxInt) 233 {name: "MVNshiftRL", argLength: 1, reg: gp11, asm: "MVN", aux: "Int32"}, // ^(arg0>>auxInt), unsigned shift 234 {name: "MVNshiftRA", argLength: 1, reg: gp11, asm: "MVN", aux: "Int32"}, // ^(arg0>>auxInt), signed shift 235 236 {name: "ADCshiftLL", argLength: 3, reg: gp2flags1, asm: "ADC", aux: "Int32"}, // arg0 + arg1<<auxInt + carry, arg2=flags 237 {name: "ADCshiftRL", argLength: 3, reg: gp2flags1, asm: "ADC", aux: "Int32"}, // arg0 + arg1>>auxInt + carry, unsigned shift, arg2=flags 238 {name: "ADCshiftRA", argLength: 3, reg: gp2flags1, asm: "ADC", aux: "Int32"}, // arg0 + arg1>>auxInt + carry, signed shift, arg2=flags 239 {name: "SBCshiftLL", argLength: 3, reg: gp2flags1, asm: "SBC", aux: "Int32"}, // arg0 - arg1<<auxInt - carry, arg2=flags 240 {name: "SBCshiftRL", argLength: 3, reg: gp2flags1, asm: "SBC", aux: "Int32"}, // arg0 - arg1>>auxInt - carry, unsigned shift, arg2=flags 241 {name: "SBCshiftRA", argLength: 3, reg: gp2flags1, asm: "SBC", aux: "Int32"}, // arg0 - arg1>>auxInt - carry, signed shift, arg2=flags 242 {name: "RSCshiftLL", argLength: 3, reg: gp2flags1, asm: "RSC", aux: "Int32"}, // arg1<<auxInt - arg0 - carry, arg2=flags 243 {name: "RSCshiftRL", argLength: 3, reg: gp2flags1, asm: "RSC", aux: "Int32"}, // arg1>>auxInt - arg0 - carry, unsigned shift, arg2=flags 244 {name: "RSCshiftRA", argLength: 3, reg: gp2flags1, asm: "RSC", aux: "Int32"}, // arg1>>auxInt - arg0 - carry, signed shift, arg2=flags 245 246 {name: "ADDSshiftLL", argLength: 2, reg: gp21carry, asm: "ADD", aux: "Int32"}, // arg0 + arg1<<auxInt, set carry flag 247 {name: "ADDSshiftRL", argLength: 2, reg: gp21carry, asm: "ADD", aux: "Int32"}, // arg0 + arg1>>auxInt, unsigned shift, set carry flag 248 {name: "ADDSshiftRA", argLength: 2, reg: gp21carry, asm: "ADD", aux: "Int32"}, // arg0 + arg1>>auxInt, signed shift, set carry flag 249 {name: "SUBSshiftLL", argLength: 2, reg: gp21carry, asm: "SUB", aux: "Int32"}, // arg0 - arg1<<auxInt, set carry flag 250 {name: "SUBSshiftRL", argLength: 2, reg: gp21carry, asm: "SUB", aux: "Int32"}, // arg0 - arg1>>auxInt, unsigned shift, set carry flag 251 {name: "SUBSshiftRA", argLength: 2, reg: gp21carry, asm: "SUB", aux: "Int32"}, // arg0 - arg1>>auxInt, signed shift, set carry flag 252 {name: "RSBSshiftLL", argLength: 2, reg: gp21carry, asm: "RSB", aux: "Int32"}, // arg1<<auxInt - arg0, set carry flag 253 {name: "RSBSshiftRL", argLength: 2, reg: gp21carry, asm: "RSB", aux: "Int32"}, // arg1>>auxInt - arg0, unsigned shift, set carry flag 254 {name: "RSBSshiftRA", argLength: 2, reg: gp21carry, asm: "RSB", aux: "Int32"}, // arg1>>auxInt - arg0, signed shift, set carry flag 255 256 {name: "ADDshiftLLreg", argLength: 3, reg: gp31, asm: "ADD"}, // arg0 + arg1<<arg2 257 {name: "ADDshiftRLreg", argLength: 3, reg: gp31, asm: "ADD"}, // arg0 + arg1>>arg2, unsigned shift 258 {name: "ADDshiftRAreg", argLength: 3, reg: gp31, asm: "ADD"}, // arg0 + arg1>>arg2, signed shift 259 {name: "SUBshiftLLreg", argLength: 3, reg: gp31, asm: "SUB"}, // arg0 - arg1<<arg2 260 {name: "SUBshiftRLreg", argLength: 3, reg: gp31, asm: "SUB"}, // arg0 - arg1>>arg2, unsigned shift 261 {name: "SUBshiftRAreg", argLength: 3, reg: gp31, asm: "SUB"}, // arg0 - arg1>>arg2, signed shift 262 {name: "RSBshiftLLreg", argLength: 3, reg: gp31, asm: "RSB"}, // arg1<<arg2 - arg0 263 {name: "RSBshiftRLreg", argLength: 3, reg: gp31, asm: "RSB"}, // arg1>>arg2 - arg0, unsigned shift 264 {name: "RSBshiftRAreg", argLength: 3, reg: gp31, asm: "RSB"}, // arg1>>arg2 - arg0, signed shift 265 {name: "ANDshiftLLreg", argLength: 3, reg: gp31, asm: "AND"}, // arg0 & (arg1<<arg2) 266 {name: "ANDshiftRLreg", argLength: 3, reg: gp31, asm: "AND"}, // arg0 & (arg1>>arg2), unsigned shift 267 {name: "ANDshiftRAreg", argLength: 3, reg: gp31, asm: "AND"}, // arg0 & (arg1>>arg2), signed shift 268 {name: "ORshiftLLreg", argLength: 3, reg: gp31, asm: "ORR"}, // arg0 | arg1<<arg2 269 {name: "ORshiftRLreg", argLength: 3, reg: gp31, asm: "ORR"}, // arg0 | arg1>>arg2, unsigned shift 270 {name: "ORshiftRAreg", argLength: 3, reg: gp31, asm: "ORR"}, // arg0 | arg1>>arg2, signed shift 271 {name: "XORshiftLLreg", argLength: 3, reg: gp31, asm: "EOR"}, // arg0 ^ arg1<<arg2 272 {name: "XORshiftRLreg", argLength: 3, reg: gp31, asm: "EOR"}, // arg0 ^ arg1>>arg2, unsigned shift 273 {name: "XORshiftRAreg", argLength: 3, reg: gp31, asm: "EOR"}, // arg0 ^ arg1>>arg2, signed shift 274 {name: "BICshiftLLreg", argLength: 3, reg: gp31, asm: "BIC"}, // arg0 &^ (arg1<<arg2) 275 {name: "BICshiftRLreg", argLength: 3, reg: gp31, asm: "BIC"}, // arg0 &^ (arg1>>arg2), unsigned shift 276 {name: "BICshiftRAreg", argLength: 3, reg: gp31, asm: "BIC"}, // arg0 &^ (arg1>>arg2), signed shift 277 {name: "MVNshiftLLreg", argLength: 2, reg: gp21, asm: "MVN"}, // ^(arg0<<arg1) 278 {name: "MVNshiftRLreg", argLength: 2, reg: gp21, asm: "MVN"}, // ^(arg0>>arg1), unsigned shift 279 {name: "MVNshiftRAreg", argLength: 2, reg: gp21, asm: "MVN"}, // ^(arg0>>arg1), signed shift 280 281 {name: "ADCshiftLLreg", argLength: 4, reg: gp3flags1, asm: "ADC"}, // arg0 + arg1<<arg2 + carry, arg3=flags 282 {name: "ADCshiftRLreg", argLength: 4, reg: gp3flags1, asm: "ADC"}, // arg0 + arg1>>arg2 + carry, unsigned shift, arg3=flags 283 {name: "ADCshiftRAreg", argLength: 4, reg: gp3flags1, asm: "ADC"}, // arg0 + arg1>>arg2 + carry, signed shift, arg3=flags 284 {name: "SBCshiftLLreg", argLength: 4, reg: gp3flags1, asm: "SBC"}, // arg0 - arg1<<arg2 - carry, arg3=flags 285 {name: "SBCshiftRLreg", argLength: 4, reg: gp3flags1, asm: "SBC"}, // arg0 - arg1>>arg2 - carry, unsigned shift, arg3=flags 286 {name: "SBCshiftRAreg", argLength: 4, reg: gp3flags1, asm: "SBC"}, // arg0 - arg1>>arg2 - carry, signed shift, arg3=flags 287 {name: "RSCshiftLLreg", argLength: 4, reg: gp3flags1, asm: "RSC"}, // arg1<<arg2 - arg0 - carry, arg3=flags 288 {name: "RSCshiftRLreg", argLength: 4, reg: gp3flags1, asm: "RSC"}, // arg1>>arg2 - arg0 - carry, unsigned shift, arg3=flags 289 {name: "RSCshiftRAreg", argLength: 4, reg: gp3flags1, asm: "RSC"}, // arg1>>arg2 - arg0 - carry, signed shift, arg3=flags 290 291 {name: "ADDSshiftLLreg", argLength: 3, reg: gp31carry, asm: "ADD"}, // arg0 + arg1<<arg2, set carry flag 292 {name: "ADDSshiftRLreg", argLength: 3, reg: gp31carry, asm: "ADD"}, // arg0 + arg1>>arg2, unsigned shift, set carry flag 293 {name: "ADDSshiftRAreg", argLength: 3, reg: gp31carry, asm: "ADD"}, // arg0 + arg1>>arg2, signed shift, set carry flag 294 {name: "SUBSshiftLLreg", argLength: 3, reg: gp31carry, asm: "SUB"}, // arg0 - arg1<<arg2, set carry flag 295 {name: "SUBSshiftRLreg", argLength: 3, reg: gp31carry, asm: "SUB"}, // arg0 - arg1>>arg2, unsigned shift, set carry flag 296 {name: "SUBSshiftRAreg", argLength: 3, reg: gp31carry, asm: "SUB"}, // arg0 - arg1>>arg2, signed shift, set carry flag 297 {name: "RSBSshiftLLreg", argLength: 3, reg: gp31carry, asm: "RSB"}, // arg1<<arg2 - arg0, set carry flag 298 {name: "RSBSshiftRLreg", argLength: 3, reg: gp31carry, asm: "RSB"}, // arg1>>arg2 - arg0, unsigned shift, set carry flag 299 {name: "RSBSshiftRAreg", argLength: 3, reg: gp31carry, asm: "RSB"}, // arg1>>arg2 - arg0, signed shift, set carry flag 300 301 // comparisons 302 {name: "CMP", argLength: 2, reg: gp2flags, asm: "CMP", typ: "Flags"}, // arg0 compare to arg1 303 {name: "CMPconst", argLength: 1, reg: gp1flags, asm: "CMP", aux: "Int32", typ: "Flags"}, // arg0 compare to auxInt 304 {name: "CMN", argLength: 2, reg: gp2flags, asm: "CMN", typ: "Flags"}, // arg0 compare to -arg1 305 {name: "CMNconst", argLength: 1, reg: gp1flags, asm: "CMN", aux: "Int32", typ: "Flags"}, // arg0 compare to -auxInt 306 {name: "TST", argLength: 2, reg: gp2flags, asm: "TST", typ: "Flags", commutative: true}, // arg0 & arg1 compare to 0 307 {name: "TSTconst", argLength: 1, reg: gp1flags, asm: "TST", aux: "Int32", typ: "Flags"}, // arg0 & auxInt compare to 0 308 {name: "TEQ", argLength: 2, reg: gp2flags, asm: "TEQ", typ: "Flags", commutative: true}, // arg0 ^ arg1 compare to 0 309 {name: "TEQconst", argLength: 1, reg: gp1flags, asm: "TEQ", aux: "Int32", typ: "Flags"}, // arg0 ^ auxInt compare to 0 310 {name: "CMPF", argLength: 2, reg: fp2flags, asm: "CMPF", typ: "Flags"}, // arg0 compare to arg1, float32 311 {name: "CMPD", argLength: 2, reg: fp2flags, asm: "CMPD", typ: "Flags"}, // arg0 compare to arg1, float64 312 313 {name: "CMPshiftLL", argLength: 2, reg: gp2flags, asm: "CMP", aux: "Int32", typ: "Flags"}, // arg0 compare to arg1<<auxInt 314 {name: "CMPshiftRL", argLength: 2, reg: gp2flags, asm: "CMP", aux: "Int32", typ: "Flags"}, // arg0 compare to arg1>>auxInt, unsigned shift 315 {name: "CMPshiftRA", argLength: 2, reg: gp2flags, asm: "CMP", aux: "Int32", typ: "Flags"}, // arg0 compare to arg1>>auxInt, signed shift 316 317 {name: "CMPshiftLLreg", argLength: 3, reg: gp3flags, asm: "CMP", typ: "Flags"}, // arg0 compare to arg1<<arg2 318 {name: "CMPshiftRLreg", argLength: 3, reg: gp3flags, asm: "CMP", typ: "Flags"}, // arg0 compare to arg1>>arg2, unsigned shift 319 {name: "CMPshiftRAreg", argLength: 3, reg: gp3flags, asm: "CMP", typ: "Flags"}, // arg0 compare to arg1>>arg2, signed shift 320 321 {name: "CMPF0", argLength: 1, reg: fp1flags, asm: "CMPF", typ: "Flags"}, // arg0 compare to 0, float32 322 {name: "CMPD0", argLength: 1, reg: fp1flags, asm: "CMPD", typ: "Flags"}, // arg0 compare to 0, float64 323 324 // moves 325 {name: "MOVWconst", argLength: 0, reg: gp01, aux: "Int32", asm: "MOVW", typ: "UInt32", rematerializeable: true}, // 32 low bits of auxint 326 {name: "MOVFconst", argLength: 0, reg: fp01, aux: "Float64", asm: "MOVF", typ: "Float32", rematerializeable: true}, // auxint as 64-bit float, convert to 32-bit float 327 {name: "MOVDconst", argLength: 0, reg: fp01, aux: "Float64", asm: "MOVD", typ: "Float64", rematerializeable: true}, // auxint as 64-bit float 328 329 {name: "MOVWaddr", argLength: 1, reg: regInfo{inputs: []regMask{buildReg("SP") | buildReg("SB")}, outputs: []regMask{gp}}, aux: "SymOff", asm: "MOVW", rematerializeable: true, symEffect: "Addr"}, // arg0 + auxInt + aux.(*gc.Sym), arg0=SP/SB 330 331 {name: "MOVBload", argLength: 2, reg: gpload, aux: "SymOff", asm: "MOVB", typ: "Int8", faultOnNilArg0: true, symEffect: "Read"}, // load from arg0 + auxInt + aux. arg1=mem. 332 {name: "MOVBUload", argLength: 2, reg: gpload, aux: "SymOff", asm: "MOVBU", typ: "UInt8", faultOnNilArg0: true, symEffect: "Read"}, // load from arg0 + auxInt + aux. arg1=mem. 333 {name: "MOVHload", argLength: 2, reg: gpload, aux: "SymOff", asm: "MOVH", typ: "Int16", faultOnNilArg0: true, symEffect: "Read"}, // load from arg0 + auxInt + aux. arg1=mem. 334 {name: "MOVHUload", argLength: 2, reg: gpload, aux: "SymOff", asm: "MOVHU", typ: "UInt16", faultOnNilArg0: true, symEffect: "Read"}, // load from arg0 + auxInt + aux. arg1=mem. 335 {name: "MOVWload", argLength: 2, reg: gpload, aux: "SymOff", asm: "MOVW", typ: "UInt32", faultOnNilArg0: true, symEffect: "Read"}, // load from arg0 + auxInt + aux. arg1=mem. 336 {name: "MOVFload", argLength: 2, reg: fpload, aux: "SymOff", asm: "MOVF", typ: "Float32", faultOnNilArg0: true, symEffect: "Read"}, // load from arg0 + auxInt + aux. arg1=mem. 337 {name: "MOVDload", argLength: 2, reg: fpload, aux: "SymOff", asm: "MOVD", typ: "Float64", faultOnNilArg0: true, symEffect: "Read"}, // load from arg0 + auxInt + aux. arg1=mem. 338 339 {name: "MOVBstore", argLength: 3, reg: gpstore, aux: "SymOff", asm: "MOVB", typ: "Mem", faultOnNilArg0: true, symEffect: "Write"}, // store 1 byte of arg1 to arg0 + auxInt + aux. arg2=mem. 340 {name: "MOVHstore", argLength: 3, reg: gpstore, aux: "SymOff", asm: "MOVH", typ: "Mem", faultOnNilArg0: true, symEffect: "Write"}, // store 2 bytes of arg1 to arg0 + auxInt + aux. arg2=mem. 341 {name: "MOVWstore", argLength: 3, reg: gpstore, aux: "SymOff", asm: "MOVW", typ: "Mem", faultOnNilArg0: true, symEffect: "Write"}, // store 4 bytes of arg1 to arg0 + auxInt + aux. arg2=mem. 342 {name: "MOVFstore", argLength: 3, reg: fpstore, aux: "SymOff", asm: "MOVF", typ: "Mem", faultOnNilArg0: true, symEffect: "Write"}, // store 4 bytes of arg1 to arg0 + auxInt + aux. arg2=mem. 343 {name: "MOVDstore", argLength: 3, reg: fpstore, aux: "SymOff", asm: "MOVD", typ: "Mem", faultOnNilArg0: true, symEffect: "Write"}, // store 8 bytes of arg1 to arg0 + auxInt + aux. arg2=mem. 344 345 {name: "MOVWloadidx", argLength: 3, reg: gp2load, asm: "MOVW"}, // load from arg0 + arg1. arg2=mem 346 {name: "MOVWloadshiftLL", argLength: 3, reg: gp2load, asm: "MOVW", aux: "Int32"}, // load from arg0 + arg1<<auxInt. arg2=mem 347 {name: "MOVWloadshiftRL", argLength: 3, reg: gp2load, asm: "MOVW", aux: "Int32"}, // load from arg0 + arg1>>auxInt, unsigned shift. arg2=mem 348 {name: "MOVWloadshiftRA", argLength: 3, reg: gp2load, asm: "MOVW", aux: "Int32"}, // load from arg0 + arg1>>auxInt, signed shift. arg2=mem 349 350 {name: "MOVWstoreidx", argLength: 4, reg: gp2store, asm: "MOVW"}, // store arg2 to arg0 + arg1. arg3=mem 351 {name: "MOVWstoreshiftLL", argLength: 4, reg: gp2store, asm: "MOVW", aux: "Int32"}, // store arg2 to arg0 + arg1<<auxInt. arg3=mem 352 {name: "MOVWstoreshiftRL", argLength: 4, reg: gp2store, asm: "MOVW", aux: "Int32"}, // store arg2 to arg0 + arg1>>auxInt, unsigned shift. arg3=mem 353 {name: "MOVWstoreshiftRA", argLength: 4, reg: gp2store, asm: "MOVW", aux: "Int32"}, // store arg2 to arg0 + arg1>>auxInt, signed shift. arg3=mem 354 355 {name: "MOVBreg", argLength: 1, reg: gp11, asm: "MOVBS"}, // move from arg0, sign-extended from byte 356 {name: "MOVBUreg", argLength: 1, reg: gp11, asm: "MOVBU"}, // move from arg0, unsign-extended from byte 357 {name: "MOVHreg", argLength: 1, reg: gp11, asm: "MOVHS"}, // move from arg0, sign-extended from half 358 {name: "MOVHUreg", argLength: 1, reg: gp11, asm: "MOVHU"}, // move from arg0, unsign-extended from half 359 {name: "MOVWreg", argLength: 1, reg: gp11, asm: "MOVW"}, // move from arg0 360 361 {name: "MOVWnop", argLength: 1, reg: regInfo{inputs: []regMask{gp}, outputs: []regMask{gp}}, resultInArg0: true}, // nop, return arg0 in same register 362 363 {name: "MOVWF", argLength: 1, reg: gpfp, asm: "MOVWF"}, // int32 -> float32 364 {name: "MOVWD", argLength: 1, reg: gpfp, asm: "MOVWD"}, // int32 -> float64 365 {name: "MOVWUF", argLength: 1, reg: gpfp, asm: "MOVWF"}, // uint32 -> float32, set U bit in the instruction 366 {name: "MOVWUD", argLength: 1, reg: gpfp, asm: "MOVWD"}, // uint32 -> float64, set U bit in the instruction 367 {name: "MOVFW", argLength: 1, reg: fpgp, asm: "MOVFW"}, // float32 -> int32 368 {name: "MOVDW", argLength: 1, reg: fpgp, asm: "MOVDW"}, // float64 -> int32 369 {name: "MOVFWU", argLength: 1, reg: fpgp, asm: "MOVFW"}, // float32 -> uint32, set U bit in the instruction 370 {name: "MOVDWU", argLength: 1, reg: fpgp, asm: "MOVDW"}, // float64 -> uint32, set U bit in the instruction 371 {name: "MOVFD", argLength: 1, reg: fp11, asm: "MOVFD"}, // float32 -> float64 372 {name: "MOVDF", argLength: 1, reg: fp11, asm: "MOVDF"}, // float64 -> float32 373 374 // conditional instructions, for lowering shifts 375 {name: "CMOVWHSconst", argLength: 2, reg: gp1flags1, asm: "MOVW", aux: "Int32", resultInArg0: true}, // replace arg0 w/ const if flags indicates HS, arg1=flags 376 {name: "CMOVWLSconst", argLength: 2, reg: gp1flags1, asm: "MOVW", aux: "Int32", resultInArg0: true}, // replace arg0 w/ const if flags indicates LS, arg1=flags 377 {name: "SRAcond", argLength: 3, reg: gp2flags1, asm: "SRA"}, // arg0 >> 31 if flags indicates HS, arg0 >> arg1 otherwise, signed shift, arg2=flags 378 379 // function calls 380 {name: "CALLstatic", argLength: 1, reg: regInfo{clobbers: callerSave}, aux: "SymOff", clobberFlags: true, call: true, symEffect: "None"}, // call static function aux.(*obj.LSym). arg0=mem, auxint=argsize, returns mem 381 {name: "CALLclosure", argLength: 3, reg: regInfo{inputs: []regMask{gpsp, buildReg("R7"), 0}, clobbers: callerSave}, aux: "Int64", clobberFlags: true, call: true}, // call function via closure. arg0=codeptr, arg1=closure, arg2=mem, auxint=argsize, returns mem 382 {name: "CALLinter", argLength: 2, reg: regInfo{inputs: []regMask{gp}, clobbers: callerSave}, aux: "Int64", clobberFlags: true, call: true}, // call fn by pointer. arg0=codeptr, arg1=mem, auxint=argsize, returns mem 383 384 // pseudo-ops 385 {name: "LoweredNilCheck", argLength: 2, reg: regInfo{inputs: []regMask{gpg}}, nilCheck: true, faultOnNilArg0: true}, // panic if arg0 is nil. arg1=mem. 386 387 {name: "Equal", argLength: 1, reg: readflags}, // bool, true flags encode x==y false otherwise. 388 {name: "NotEqual", argLength: 1, reg: readflags}, // bool, true flags encode x!=y false otherwise. 389 {name: "LessThan", argLength: 1, reg: readflags}, // bool, true flags encode signed x<y false otherwise. 390 {name: "LessEqual", argLength: 1, reg: readflags}, // bool, true flags encode signed x<=y false otherwise. 391 {name: "GreaterThan", argLength: 1, reg: readflags}, // bool, true flags encode signed x>y false otherwise. 392 {name: "GreaterEqual", argLength: 1, reg: readflags}, // bool, true flags encode signed x>=y false otherwise. 393 {name: "LessThanU", argLength: 1, reg: readflags}, // bool, true flags encode unsigned x<y false otherwise. 394 {name: "LessEqualU", argLength: 1, reg: readflags}, // bool, true flags encode unsigned x<=y false otherwise. 395 {name: "GreaterThanU", argLength: 1, reg: readflags}, // bool, true flags encode unsigned x>y false otherwise. 396 {name: "GreaterEqualU", argLength: 1, reg: readflags}, // bool, true flags encode unsigned x>=y false otherwise. 397 398 // duffzero (must be 4-byte aligned) 399 // arg0 = address of memory to zero (in R1, changed as side effect) 400 // arg1 = value to store (always zero) 401 // arg2 = mem 402 // auxint = offset into duffzero code to start executing 403 // returns mem 404 { 405 name: "DUFFZERO", 406 aux: "Int64", 407 argLength: 3, 408 reg: regInfo{ 409 inputs: []regMask{buildReg("R1"), buildReg("R0")}, 410 clobbers: buildReg("R1 R14"), 411 }, 412 faultOnNilArg0: true, 413 }, 414 415 // duffcopy (must be 4-byte aligned) 416 // arg0 = address of dst memory (in R2, changed as side effect) 417 // arg1 = address of src memory (in R1, changed as side effect) 418 // arg2 = mem 419 // auxint = offset into duffcopy code to start executing 420 // returns mem 421 { 422 name: "DUFFCOPY", 423 aux: "Int64", 424 argLength: 3, 425 reg: regInfo{ 426 inputs: []regMask{buildReg("R2"), buildReg("R1")}, 427 clobbers: buildReg("R0 R1 R2 R14"), 428 }, 429 faultOnNilArg0: true, 430 faultOnNilArg1: true, 431 }, 432 433 // large or unaligned zeroing 434 // arg0 = address of memory to zero (in R1, changed as side effect) 435 // arg1 = address of the last element to zero 436 // arg2 = value to store (always zero) 437 // arg3 = mem 438 // returns mem 439 // MOVW.P Rarg2, 4(R1) 440 // CMP R1, Rarg1 441 // BLE -2(PC) 442 { 443 name: "LoweredZero", 444 aux: "Int64", 445 argLength: 4, 446 reg: regInfo{ 447 inputs: []regMask{buildReg("R1"), gp, gp}, 448 clobbers: buildReg("R1"), 449 }, 450 clobberFlags: true, 451 faultOnNilArg0: true, 452 }, 453 454 // large or unaligned move 455 // arg0 = address of dst memory (in R2, changed as side effect) 456 // arg1 = address of src memory (in R1, changed as side effect) 457 // arg2 = address of the last element of src 458 // arg3 = mem 459 // returns mem 460 // MOVW.P 4(R1), Rtmp 461 // MOVW.P Rtmp, 4(R2) 462 // CMP R1, Rarg2 463 // BLE -3(PC) 464 { 465 name: "LoweredMove", 466 aux: "Int64", 467 argLength: 4, 468 reg: regInfo{ 469 inputs: []regMask{buildReg("R2"), buildReg("R1"), gp}, 470 clobbers: buildReg("R1 R2"), 471 }, 472 clobberFlags: true, 473 faultOnNilArg0: true, 474 faultOnNilArg1: true, 475 }, 476 477 // Scheduler ensures LoweredGetClosurePtr occurs only in entry block, 478 // and sorts it to the very beginning of the block to prevent other 479 // use of R7 (arm.REGCTXT, the closure pointer) 480 {name: "LoweredGetClosurePtr", reg: regInfo{outputs: []regMask{buildReg("R7")}}}, 481 482 // MOVWconvert converts between pointers and integers. 483 // We have a special op for this so as to not confuse GC 484 // (particularly stack maps). It takes a memory arg so it 485 // gets correctly ordered with respect to GC safepoints. 486 // arg0=ptr/int arg1=mem, output=int/ptr 487 {name: "MOVWconvert", argLength: 2, reg: gp11, asm: "MOVW"}, 488 489 // Constant flag values. For any comparison, there are 5 possible 490 // outcomes: the three from the signed total order (<,==,>) and the 491 // three from the unsigned total order. The == cases overlap. 492 // Note: there's a sixth "unordered" outcome for floating-point 493 // comparisons, but we don't use such a beast yet. 494 // These ops are for temporary use by rewrite rules. They 495 // cannot appear in the generated assembly. 496 {name: "FlagEQ"}, // equal 497 {name: "FlagLT_ULT"}, // signed < and unsigned < 498 {name: "FlagLT_UGT"}, // signed < and unsigned > 499 {name: "FlagGT_UGT"}, // signed > and unsigned < 500 {name: "FlagGT_ULT"}, // signed > and unsigned > 501 502 // (InvertFlags (CMP a b)) == (CMP b a) 503 // InvertFlags is a pseudo-op which can't appear in assembly output. 504 {name: "InvertFlags", argLength: 1}, // reverse direction of arg0 505 } 506 507 blocks := []blockData{ 508 {name: "EQ"}, 509 {name: "NE"}, 510 {name: "LT"}, 511 {name: "LE"}, 512 {name: "GT"}, 513 {name: "GE"}, 514 {name: "ULT"}, 515 {name: "ULE"}, 516 {name: "UGT"}, 517 {name: "UGE"}, 518 } 519 520 archs = append(archs, arch{ 521 name: "ARM", 522 pkg: "cmd/internal/obj/arm", 523 genfile: "../../arm/ssa.go", 524 ops: ops, 525 blocks: blocks, 526 regnames: regNamesARM, 527 gpregmask: gp, 528 fpregmask: fp, 529 framepointerreg: -1, // not used 530 linkreg: int8(num["R14"]), 531 }) 532 }