1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "disassembler_mips.h" 18 19 #include <ostream> 20 #include <sstream> 21 22 #include "base/logging.h" 23 #include "base/stringprintf.h" 24 #include "thread.h" 25 26 namespace art { 27 namespace mips { 28 29 struct MipsInstruction { 30 uint32_t mask; 31 uint32_t value; 32 const char* name; 33 const char* args_fmt; 34 35 bool Matches(uint32_t instruction) const { 36 return (instruction & mask) == value; 37 } 38 }; 39 40 static const uint32_t kOpcodeShift = 26; 41 42 static const uint32_t kCop1 = (17 << kOpcodeShift); 43 44 static const uint32_t kITypeMask = (0x3f << kOpcodeShift); 45 static const uint32_t kJTypeMask = (0x3f << kOpcodeShift); 46 static const uint32_t kRTypeMask = ((0x3f << kOpcodeShift) | (0x3f)); 47 static const uint32_t kSpecial0Mask = (0x3f << kOpcodeShift); 48 static const uint32_t kSpecial2Mask = (0x3f << kOpcodeShift); 49 static const uint32_t kSpecial3Mask = (0x3f << kOpcodeShift); 50 static const uint32_t kFpMask = kRTypeMask; 51 52 static const MipsInstruction gMipsInstructions[] = { 53 // "sll r0, r0, 0" is the canonical "nop", used in delay slots. 54 { 0xffffffff, 0, "nop", "" }, 55 56 // R-type instructions. 57 { kRTypeMask, 0, "sll", "DTA", }, 58 // 0, 1, movci 59 { kRTypeMask | (0x1f << 21), 2, "srl", "DTA", }, 60 { kRTypeMask, 3, "sra", "DTA", }, 61 { kRTypeMask | (0x1f << 6), 4, "sllv", "DTS", }, 62 { kRTypeMask | (0x1f << 6), 6, "srlv", "DTS", }, 63 { kRTypeMask | (0x1f << 6), (1 << 6) | 6, "rotrv", "DTS", }, 64 { kRTypeMask | (0x1f << 6), 7, "srav", "DTS", }, 65 { kRTypeMask, 8, "jr", "S", }, 66 { kRTypeMask | (0x1f << 11), 9 | (31 << 11), "jalr", "S", }, // rd = 31 is implicit. 67 { kRTypeMask | (0x1f << 11), 9, "jr", "S", }, // rd = 0 is implicit. 68 { kRTypeMask, 9, "jalr", "DS", }, // General case. 69 { kRTypeMask | (0x1f << 6), 10, "movz", "DST", }, 70 { kRTypeMask | (0x1f << 6), 11, "movn", "DST", }, 71 { kRTypeMask, 12, "syscall", "", }, // TODO: code 72 { kRTypeMask, 13, "break", "", }, // TODO: code 73 { kRTypeMask, 15, "sync", "", }, // TODO: type 74 { kRTypeMask, 16, "mfhi", "D", }, 75 { kRTypeMask, 17, "mthi", "S", }, 76 { kRTypeMask, 18, "mflo", "D", }, 77 { kRTypeMask, 19, "mtlo", "S", }, 78 { kRTypeMask | (0x1f << 6), 20, "dsllv", "DTS", }, 79 { kRTypeMask | (0x1f << 6), 22, "dsrlv", "DTS", }, 80 { kRTypeMask | (0x1f << 6), (1 << 6) | 22, "drotrv", "DTS", }, 81 { kRTypeMask | (0x1f << 6), 23, "dsrav", "DTS", }, 82 { kRTypeMask | (0x1f << 6), 24, "mult", "ST", }, 83 { kRTypeMask | (0x1f << 6), 25, "multu", "ST", }, 84 { kRTypeMask | (0x1f << 6), 26, "div", "ST", }, 85 { kRTypeMask | (0x1f << 6), 27, "divu", "ST", }, 86 { kRTypeMask | (0x1f << 6), 24 + (2 << 6), "mul", "DST", }, 87 { kRTypeMask | (0x1f << 6), 24 + (3 << 6), "muh", "DST", }, 88 { kRTypeMask | (0x1f << 6), 26 + (2 << 6), "div", "DST", }, 89 { kRTypeMask | (0x1f << 6), 26 + (3 << 6), "mod", "DST", }, 90 { kRTypeMask, 32, "add", "DST", }, 91 { kRTypeMask, 33, "addu", "DST", }, 92 { kRTypeMask, 34, "sub", "DST", }, 93 { kRTypeMask, 35, "subu", "DST", }, 94 { kRTypeMask, 36, "and", "DST", }, 95 { kRTypeMask, 37, "or", "DST", }, 96 { kRTypeMask, 38, "xor", "DST", }, 97 { kRTypeMask, 39, "nor", "DST", }, 98 { kRTypeMask, 42, "slt", "DST", }, 99 { kRTypeMask, 43, "sltu", "DST", }, 100 { kRTypeMask, 45, "daddu", "DST", }, 101 { kRTypeMask, 46, "dsub", "DST", }, 102 { kRTypeMask, 47, "dsubu", "DST", }, 103 // TODO: tge[u], tlt[u], teg, tne 104 { kRTypeMask | (0x1f << 21), 56, "dsll", "DTA", }, 105 { kRTypeMask | (0x1f << 21), 58, "dsrl", "DTA", }, 106 { kRTypeMask | (0x1f << 21), (1 << 21) | 58, "drotr", "DTA", }, 107 { kRTypeMask | (0x1f << 21), 59, "dsra", "DTA", }, 108 { kRTypeMask | (0x1f << 21), 60, "dsll32", "DTA", }, 109 { kRTypeMask | (0x1f << 21), 62, "dsrl32", "DTA", }, 110 { kRTypeMask | (0x1f << 21), (1 << 21) | 62, "drotr32", "DTA", }, 111 { kRTypeMask | (0x1f << 21), 63, "dsra32", "DTA", }, 112 113 // SPECIAL0 114 { kSpecial0Mask | 0x307ff, 1, "movf", "DSc" }, 115 { kSpecial0Mask | 0x307ff, 0x10001, "movt", "DSc" }, 116 { kSpecial0Mask | 0x7ff, (2 << 6) | 24, "mul", "DST" }, 117 { kSpecial0Mask | 0x7ff, (3 << 6) | 24, "muh", "DST" }, 118 { kSpecial0Mask | 0x7ff, (2 << 6) | 25, "mulu", "DST" }, 119 { kSpecial0Mask | 0x7ff, (3 << 6) | 25, "muhu", "DST" }, 120 { kSpecial0Mask | 0x7ff, (2 << 6) | 26, "div", "DST" }, 121 { kSpecial0Mask | 0x7ff, (3 << 6) | 26, "mod", "DST" }, 122 { kSpecial0Mask | 0x7ff, (2 << 6) | 27, "divu", "DST" }, 123 { kSpecial0Mask | 0x7ff, (3 << 6) | 27, "modu", "DST" }, 124 { kSpecial0Mask | 0x7ff, (2 << 6) | 28, "dmul", "DST" }, 125 { kSpecial0Mask | 0x7ff, (3 << 6) | 28, "dmuh", "DST" }, 126 { kSpecial0Mask | 0x7ff, (2 << 6) | 29, "dmulu", "DST" }, 127 { kSpecial0Mask | 0x7ff, (3 << 6) | 29, "dmuhu", "DST" }, 128 { kSpecial0Mask | 0x7ff, (2 << 6) | 30, "ddiv", "DST" }, 129 { kSpecial0Mask | 0x7ff, (3 << 6) | 30, "dmod", "DST" }, 130 { kSpecial0Mask | 0x7ff, (2 << 6) | 31, "ddivu", "DST" }, 131 { kSpecial0Mask | 0x7ff, (3 << 6) | 31, "dmodu", "DST" }, 132 { kSpecial0Mask | 0x7ff, (0 << 6) | 53, "seleqz", "DST" }, 133 { kSpecial0Mask | 0x7ff, (0 << 6) | 55, "selnez", "DST" }, 134 { kSpecial0Mask | (0x1f << 21) | 0x3f, (1 << 21) | 2, "rotr", "DTA", }, 135 { kSpecial0Mask | (0x1f << 16) | 0x7ff, (0x01 << 6) | 0x10, "clz", "DS" }, 136 { kSpecial0Mask | (0x1f << 16) | 0x7ff, (0x01 << 6) | 0x11, "clo", "DS" }, 137 { kSpecial0Mask | (0x1f << 16) | 0x7ff, (0x01 << 6) | 0x12, "dclz", "DS" }, 138 { kSpecial0Mask | (0x1f << 16) | 0x7ff, (0x01 << 6) | 0x13, "dclo", "DS" }, 139 // TODO: sdbbp 140 141 // SPECIAL2 142 { kSpecial2Mask | 0x7ff, (28 << kOpcodeShift) | 2, "mul", "DST" }, 143 { kSpecial2Mask | 0x7ff, (28 << kOpcodeShift) | 32, "clz", "DS" }, 144 { kSpecial2Mask | 0x7ff, (28 << kOpcodeShift) | 33, "clo", "DS" }, 145 { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 0, "madd", "ST" }, 146 { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 1, "maddu", "ST" }, 147 { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 2, "mul", "DST" }, 148 { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 4, "msub", "ST" }, 149 { kSpecial2Mask | 0xffff, (28 << kOpcodeShift) | 5, "msubu", "ST" }, 150 { kSpecial2Mask | 0x3f, (28 << kOpcodeShift) | 0x3f, "sdbbp", "" }, // TODO: code 151 152 // SPECIAL3 153 { kSpecial3Mask | 0x3f, (31 << kOpcodeShift), "ext", "TSAZ", }, 154 { kSpecial3Mask | 0x3f, (31 << kOpcodeShift) | 3, "dext", "TSAZ", }, 155 { kSpecial3Mask | 0x3f, (31 << kOpcodeShift) | 4, "ins", "TSAz", }, 156 { kSpecial3Mask | (0x1f << 21) | (0x1f << 6) | 0x3f, 157 (31 << kOpcodeShift) | (16 << 6) | 32, 158 "seb", 159 "DT", }, 160 { kSpecial3Mask | (0x1f << 21) | (0x1f << 6) | 0x3f, 161 (31 << kOpcodeShift) | (24 << 6) | 32, 162 "seh", 163 "DT", }, 164 { kSpecial3Mask | (0x1f << 21) | (0x1f << 6) | 0x3f, 165 (31 << kOpcodeShift) | 32, 166 "bitswap", 167 "DT", }, 168 { kSpecial3Mask | (0x1f << 21) | (0x1f << 6) | 0x3f, 169 (31 << kOpcodeShift) | 36, 170 "dbitswap", 171 "DT", }, 172 { kSpecial3Mask | (0x1f << 21) | (0x1f << 6) | 0x3f, 173 (31 << kOpcodeShift) | (2 << 6) | 36, 174 "dsbh", 175 "DT", }, 176 { kSpecial3Mask | (0x1f << 21) | (0x1f << 6) | 0x3f, 177 (31 << kOpcodeShift) | (5 << 6) | 36, 178 "dshd", 179 "DT", }, 180 { kSpecial3Mask | (0x1f << 21) | (0x1f << 6) | 0x3f, 181 (31 << kOpcodeShift) | (2 << 6) | 32, 182 "wsbh", 183 "DT", }, 184 { kSpecial3Mask | 0x7f, (31 << kOpcodeShift) | 0x26, "sc", "Tl", }, 185 { kSpecial3Mask | 0x7f, (31 << kOpcodeShift) | 0x27, "scd", "Tl", }, 186 { kSpecial3Mask | 0x7f, (31 << kOpcodeShift) | 0x36, "ll", "Tl", }, 187 { kSpecial3Mask | 0x7f, (31 << kOpcodeShift) | 0x37, "lld", "Tl", }, 188 189 // J-type instructions. 190 { kJTypeMask, 2 << kOpcodeShift, "j", "L" }, 191 { kJTypeMask, 3 << kOpcodeShift, "jal", "L" }, 192 193 // I-type instructions. 194 { kITypeMask, 4 << kOpcodeShift, "beq", "STB" }, 195 { kITypeMask, 5 << kOpcodeShift, "bne", "STB" }, 196 { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (1 << 16), "bgez", "SB" }, 197 { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (0 << 16), "bltz", "SB" }, 198 { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (2 << 16), "bltzl", "SB" }, 199 { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (16 << 16), "bltzal", "SB" }, 200 { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (18 << 16), "bltzall", "SB" }, 201 { kITypeMask | (0x1f << 16), 6 << kOpcodeShift | (0 << 16), "blez", "SB" }, 202 { kITypeMask, 6 << kOpcodeShift, "bgeuc", "STB" }, 203 { kITypeMask | (0x1f << 16), 7 << kOpcodeShift | (0 << 16), "bgtz", "SB" }, 204 { kITypeMask, 7 << kOpcodeShift, "bltuc", "STB" }, 205 { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (6 << 16), "dahi", "Si", }, 206 { kITypeMask | (0x1f << 16), 1 << kOpcodeShift | (30 << 16), "dati", "Si", }, 207 208 { 0xffff0000, (4 << kOpcodeShift), "b", "B" }, 209 { 0xffff0000, (1 << kOpcodeShift) | (17 << 16), "bal", "B" }, 210 211 { kITypeMask, 8 << kOpcodeShift, "beqc", "STB" }, 212 213 { kITypeMask, 8 << kOpcodeShift, "addi", "TSi", }, 214 { kITypeMask, 9 << kOpcodeShift, "addiu", "TSi", }, 215 { kITypeMask, 10 << kOpcodeShift, "slti", "TSi", }, 216 { kITypeMask, 11 << kOpcodeShift, "sltiu", "TSi", }, 217 { kITypeMask, 12 << kOpcodeShift, "andi", "TSi", }, 218 { kITypeMask, 13 << kOpcodeShift, "ori", "TSi", }, 219 { kITypeMask, 14 << kOpcodeShift, "xori", "TSi", }, 220 { kITypeMask | (0x1f << 21), 15 << kOpcodeShift, "lui", "TI", }, 221 { kITypeMask, 15 << kOpcodeShift, "aui", "TSI", }, 222 223 { kITypeMask | (0x3e3 << 16), (17 << kOpcodeShift) | (8 << 21), "bc1f", "cB" }, 224 { kITypeMask | (0x3e3 << 16), (17 << kOpcodeShift) | (8 << 21) | (1 << 16), "bc1t", "cB" }, 225 { kITypeMask | (0x1f << 21), (17 << kOpcodeShift) | (9 << 21), "bc1eqz", "tB" }, 226 { kITypeMask | (0x1f << 21), (17 << kOpcodeShift) | (13 << 21), "bc1nez", "tB" }, 227 228 { kITypeMask | (0x1f << 21), 22 << kOpcodeShift, "blezc", "TB" }, 229 230 // TODO: de-dup 231 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (1 << 21) | (1 << 16), "bgezc", "TB" }, 232 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (2 << 21) | (2 << 16), "bgezc", "TB" }, 233 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (3 << 21) | (3 << 16), "bgezc", "TB" }, 234 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (4 << 21) | (4 << 16), "bgezc", "TB" }, 235 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (5 << 21) | (5 << 16), "bgezc", "TB" }, 236 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (6 << 21) | (6 << 16), "bgezc", "TB" }, 237 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (7 << 21) | (7 << 16), "bgezc", "TB" }, 238 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (8 << 21) | (8 << 16), "bgezc", "TB" }, 239 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (9 << 21) | (9 << 16), "bgezc", "TB" }, 240 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (10 << 21) | (10 << 16), "bgezc", "TB" }, 241 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (11 << 21) | (11 << 16), "bgezc", "TB" }, 242 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (12 << 21) | (12 << 16), "bgezc", "TB" }, 243 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (13 << 21) | (13 << 16), "bgezc", "TB" }, 244 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (14 << 21) | (14 << 16), "bgezc", "TB" }, 245 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (15 << 21) | (15 << 16), "bgezc", "TB" }, 246 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (16 << 21) | (16 << 16), "bgezc", "TB" }, 247 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (17 << 21) | (17 << 16), "bgezc", "TB" }, 248 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (18 << 21) | (18 << 16), "bgezc", "TB" }, 249 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (19 << 21) | (19 << 16), "bgezc", "TB" }, 250 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (20 << 21) | (20 << 16), "bgezc", "TB" }, 251 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (21 << 21) | (21 << 16), "bgezc", "TB" }, 252 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (22 << 21) | (22 << 16), "bgezc", "TB" }, 253 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (23 << 21) | (23 << 16), "bgezc", "TB" }, 254 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (24 << 21) | (24 << 16), "bgezc", "TB" }, 255 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (25 << 21) | (25 << 16), "bgezc", "TB" }, 256 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (26 << 21) | (26 << 16), "bgezc", "TB" }, 257 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (27 << 21) | (27 << 16), "bgezc", "TB" }, 258 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (28 << 21) | (28 << 16), "bgezc", "TB" }, 259 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (29 << 21) | (29 << 16), "bgezc", "TB" }, 260 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (30 << 21) | (30 << 16), "bgezc", "TB" }, 261 { kITypeMask | (0x3ff << 16), (22 << kOpcodeShift) | (31 << 21) | (31 << 16), "bgezc", "TB" }, 262 263 { kITypeMask, 22 << kOpcodeShift, "bgec", "STB" }, 264 265 { kITypeMask | (0x1f << 21), 23 << kOpcodeShift, "bgtzc", "TB" }, 266 267 // TODO: de-dup 268 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (1 << 21) | (1 << 16), "bltzc", "TB" }, 269 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (2 << 21) | (2 << 16), "bltzc", "TB" }, 270 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (3 << 21) | (3 << 16), "bltzc", "TB" }, 271 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (4 << 21) | (4 << 16), "bltzc", "TB" }, 272 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (5 << 21) | (5 << 16), "bltzc", "TB" }, 273 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (6 << 21) | (6 << 16), "bltzc", "TB" }, 274 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (7 << 21) | (7 << 16), "bltzc", "TB" }, 275 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (8 << 21) | (8 << 16), "bltzc", "TB" }, 276 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (9 << 21) | (9 << 16), "bltzc", "TB" }, 277 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (10 << 21) | (10 << 16), "bltzc", "TB" }, 278 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (11 << 21) | (11 << 16), "bltzc", "TB" }, 279 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (12 << 21) | (12 << 16), "bltzc", "TB" }, 280 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (13 << 21) | (13 << 16), "bltzc", "TB" }, 281 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (14 << 21) | (14 << 16), "bltzc", "TB" }, 282 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (15 << 21) | (15 << 16), "bltzc", "TB" }, 283 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (16 << 21) | (16 << 16), "bltzc", "TB" }, 284 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (17 << 21) | (17 << 16), "bltzc", "TB" }, 285 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (18 << 21) | (18 << 16), "bltzc", "TB" }, 286 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (19 << 21) | (19 << 16), "bltzc", "TB" }, 287 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (20 << 21) | (20 << 16), "bltzc", "TB" }, 288 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (21 << 21) | (21 << 16), "bltzc", "TB" }, 289 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (22 << 21) | (22 << 16), "bltzc", "TB" }, 290 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (23 << 21) | (23 << 16), "bltzc", "TB" }, 291 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (24 << 21) | (24 << 16), "bltzc", "TB" }, 292 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (25 << 21) | (25 << 16), "bltzc", "TB" }, 293 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (26 << 21) | (26 << 16), "bltzc", "TB" }, 294 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (27 << 21) | (27 << 16), "bltzc", "TB" }, 295 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (28 << 21) | (28 << 16), "bltzc", "TB" }, 296 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (29 << 21) | (29 << 16), "bltzc", "TB" }, 297 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (30 << 21) | (30 << 16), "bltzc", "TB" }, 298 { kITypeMask | (0x3ff << 16), (23 << kOpcodeShift) | (31 << 21) | (31 << 16), "bltzc", "TB" }, 299 300 { kITypeMask, 23 << kOpcodeShift, "bltc", "STB" }, 301 302 { kITypeMask, 24 << kOpcodeShift, "bnec", "STB" }, 303 304 { kITypeMask, 25 << kOpcodeShift, "daddiu", "TSi", }, 305 { kITypeMask, 29 << kOpcodeShift, "daui", "TSi", }, 306 307 { kITypeMask, 32u << kOpcodeShift, "lb", "TO", }, 308 { kITypeMask, 33u << kOpcodeShift, "lh", "TO", }, 309 { kITypeMask, 34u << kOpcodeShift, "lwl", "TO", }, 310 { kITypeMask, 35u << kOpcodeShift, "lw", "TO", }, 311 { kITypeMask, 36u << kOpcodeShift, "lbu", "TO", }, 312 { kITypeMask, 37u << kOpcodeShift, "lhu", "TO", }, 313 { kITypeMask, 38u << kOpcodeShift, "lwr", "TO", }, 314 { kITypeMask, 39u << kOpcodeShift, "lwu", "TO", }, 315 { kITypeMask, 40u << kOpcodeShift, "sb", "TO", }, 316 { kITypeMask, 41u << kOpcodeShift, "sh", "TO", }, 317 { kITypeMask, 42u << kOpcodeShift, "swl", "TO", }, 318 { kITypeMask, 43u << kOpcodeShift, "sw", "TO", }, 319 { kITypeMask, 46u << kOpcodeShift, "swr", "TO", }, 320 { kITypeMask, 48u << kOpcodeShift, "ll", "TO", }, 321 { kITypeMask, 49u << kOpcodeShift, "lwc1", "tO", }, 322 { kJTypeMask, 50u << kOpcodeShift, "bc", "P" }, 323 { kITypeMask, 53u << kOpcodeShift, "ldc1", "tO", }, 324 { kITypeMask | (0x1f << 21), 54u << kOpcodeShift, "jic", "Ti" }, 325 { kITypeMask | (1 << 21), (54u << kOpcodeShift) | (1 << 21), "beqzc", "Sb" }, // TODO: de-dup? 326 { kITypeMask | (1 << 22), (54u << kOpcodeShift) | (1 << 22), "beqzc", "Sb" }, 327 { kITypeMask | (1 << 23), (54u << kOpcodeShift) | (1 << 23), "beqzc", "Sb" }, 328 { kITypeMask | (1 << 24), (54u << kOpcodeShift) | (1 << 24), "beqzc", "Sb" }, 329 { kITypeMask | (1 << 25), (54u << kOpcodeShift) | (1 << 25), "beqzc", "Sb" }, 330 { kITypeMask, 55u << kOpcodeShift, "ld", "TO", }, 331 { kITypeMask, 56u << kOpcodeShift, "sc", "TO", }, 332 { kITypeMask, 57u << kOpcodeShift, "swc1", "tO", }, 333 { kITypeMask | (0x1f << 16), (59u << kOpcodeShift) | (30 << 16), "auipc", "Si" }, 334 { kITypeMask | (0x3 << 19), (59u << kOpcodeShift) | (0 << 19), "addiupc", "Sp" }, 335 { kITypeMask, 61u << kOpcodeShift, "sdc1", "tO", }, 336 { kITypeMask | (0x1f << 21), 62u << kOpcodeShift, "jialc", "Ti" }, 337 { kITypeMask | (1 << 21), (62u << kOpcodeShift) | (1 << 21), "bnezc", "Sb" }, // TODO: de-dup? 338 { kITypeMask | (1 << 22), (62u << kOpcodeShift) | (1 << 22), "bnezc", "Sb" }, 339 { kITypeMask | (1 << 23), (62u << kOpcodeShift) | (1 << 23), "bnezc", "Sb" }, 340 { kITypeMask | (1 << 24), (62u << kOpcodeShift) | (1 << 24), "bnezc", "Sb" }, 341 { kITypeMask | (1 << 25), (62u << kOpcodeShift) | (1 << 25), "bnezc", "Sb" }, 342 { kITypeMask, 63u << kOpcodeShift, "sd", "TO", }, 343 344 // Floating point. 345 { kFpMask | (0x1f << 21), kCop1 | (0x00 << 21), "mfc1", "Td" }, 346 { kFpMask | (0x1f << 21), kCop1 | (0x01 << 21), "dmfc1", "Td" }, 347 { kFpMask | (0x1f << 21), kCop1 | (0x03 << 21), "mfhc1", "Td" }, 348 { kFpMask | (0x1f << 21), kCop1 | (0x04 << 21), "mtc1", "Td" }, 349 { kFpMask | (0x1f << 21), kCop1 | (0x05 << 21), "dmtc1", "Td" }, 350 { kFpMask | (0x1f << 21), kCop1 | (0x07 << 21), "mthc1", "Td" }, 351 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 1, "cmp.un.s", "adt" }, 352 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 2, "cmp.eq.s", "adt" }, 353 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 3, "cmp.ueq.s", "adt" }, 354 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 4, "cmp.lt.s", "adt" }, 355 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 5, "cmp.ult.s", "adt" }, 356 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 6, "cmp.le.s", "adt" }, 357 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 7, "cmp.ule.s", "adt" }, 358 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 17, "cmp.or.s", "adt" }, 359 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 18, "cmp.une.s", "adt" }, 360 { kFpMask | (0x1f << 21), kCop1 | (0x14 << 21) | 19, "cmp.ne.s", "adt" }, 361 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 1, "cmp.un.d", "adt" }, 362 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 2, "cmp.eq.d", "adt" }, 363 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 3, "cmp.ueq.d", "adt" }, 364 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 4, "cmp.lt.d", "adt" }, 365 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 5, "cmp.ult.d", "adt" }, 366 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 6, "cmp.le.d", "adt" }, 367 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 7, "cmp.ule.d", "adt" }, 368 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 17, "cmp.or.d", "adt" }, 369 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 18, "cmp.une.d", "adt" }, 370 { kFpMask | (0x1f << 21), kCop1 | (0x15 << 21) | 19, "cmp.ne.d", "adt" }, 371 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 0, "add", "fadt" }, 372 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 1, "sub", "fadt" }, 373 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 2, "mul", "fadt" }, 374 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 3, "div", "fadt" }, 375 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 4, "sqrt", "fad" }, 376 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 5, "abs", "fad" }, 377 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 6, "mov", "fad" }, 378 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 7, "neg", "fad" }, 379 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 8, "round.l", "fad" }, 380 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 9, "trunc.l", "fad" }, 381 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 10, "ceil.l", "fad" }, 382 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 11, "floor.l", "fad" }, 383 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 12, "round.w", "fad" }, 384 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 13, "trunc.w", "fad" }, 385 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 14, "ceil.w", "fad" }, 386 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 15, "floor.w", "fad" }, 387 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 26, "rint", "fad" }, 388 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 27, "class", "fad" }, 389 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 32, "cvt.s", "fad" }, 390 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 33, "cvt.d", "fad" }, 391 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 36, "cvt.w", "fad" }, 392 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 37, "cvt.l", "fad" }, 393 { kFpMask | (0x21f << 16), kCop1 | (0x200 << 16) | 38, "cvt.ps", "fad" }, 394 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 49, "c.un", "fCdt" }, 395 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 50, "c.eq", "fCdt" }, 396 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 51, "c.ueq", "fCdt" }, 397 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 52, "c.olt", "fCdt" }, 398 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 53, "c.ult", "fCdt" }, 399 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 54, "c.ole", "fCdt" }, 400 { kFpMask | (0x10 << 21), kCop1 | (0x10 << 21) | 55, "c.ule", "fCdt" }, 401 { kFpMask, kCop1 | 0x10, "sel", "fadt" }, 402 { kFpMask, kCop1 | 0x1e, "max", "fadt" }, 403 { kFpMask, kCop1 | 0x1c, "min", "fadt" }, 404 }; 405 406 static uint32_t ReadU32(const uint8_t* ptr) { 407 // We only support little-endian MIPS. 408 return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24); 409 } 410 411 size_t DisassemblerMips::Dump(std::ostream& os, const uint8_t* instr_ptr) { 412 uint32_t instruction = ReadU32(instr_ptr); 413 414 uint32_t rs = (instruction >> 21) & 0x1f; // I-type, R-type. 415 uint32_t rt = (instruction >> 16) & 0x1f; // I-type, R-type. 416 uint32_t rd = (instruction >> 11) & 0x1f; // R-type. 417 uint32_t sa = (instruction >> 6) & 0x1f; // R-type. 418 419 std::string opcode; 420 std::ostringstream args; 421 422 // TODO: remove this! 423 uint32_t op = (instruction >> 26) & 0x3f; 424 uint32_t function = (instruction & 0x3f); // R-type. 425 opcode = StringPrintf("op=%d fn=%d", op, function); 426 427 for (size_t i = 0; i < arraysize(gMipsInstructions); ++i) { 428 if (gMipsInstructions[i].Matches(instruction)) { 429 opcode = gMipsInstructions[i].name; 430 for (const char* args_fmt = gMipsInstructions[i].args_fmt; *args_fmt; ++args_fmt) { 431 switch (*args_fmt) { 432 case 'A': // sa (shift amount or [d]ins/[d]ext position). 433 args << sa; 434 break; 435 case 'B': // Branch offset. 436 { 437 int32_t offset = static_cast<int16_t>(instruction & 0xffff); 438 offset <<= 2; 439 offset += 4; // Delay slot. 440 args << FormatInstructionPointer(instr_ptr + offset) 441 << StringPrintf(" ; %+d", offset); 442 } 443 break; 444 case 'b': // 21-bit branch offset. 445 { 446 int32_t offset = (instruction & 0x1fffff) - ((instruction & 0x100000) << 1); 447 offset <<= 2; 448 offset += 4; // Delay slot. 449 args << FormatInstructionPointer(instr_ptr + offset) 450 << StringPrintf(" ; %+d", offset); 451 } 452 break; 453 case 'C': // Floating-point condition code flag in c.<cond>.fmt. 454 args << "cc" << (sa >> 2); 455 break; 456 case 'c': // Floating-point condition code flag in bc1f/bc1t and movf/movt. 457 args << "cc" << (rt >> 2); 458 break; 459 case 'D': args << 'r' << rd; break; 460 case 'd': args << 'f' << rd; break; 461 case 'a': args << 'f' << sa; break; 462 case 'f': // Floating point "fmt". 463 { 464 size_t fmt = (instruction >> 21) & 0x7; // TODO: other fmts? 465 switch (fmt) { 466 case 0: opcode += ".s"; break; 467 case 1: opcode += ".d"; break; 468 case 4: opcode += ".w"; break; 469 case 5: opcode += ".l"; break; 470 case 6: opcode += ".ps"; break; 471 default: opcode += ".?"; break; 472 } 473 continue; // No ", ". 474 } 475 case 'I': // Upper 16-bit immediate. 476 args << reinterpret_cast<void*>((instruction & 0xffff) << 16); 477 break; 478 case 'i': // Sign-extended lower 16-bit immediate. 479 args << static_cast<int16_t>(instruction & 0xffff); 480 break; 481 case 'L': // Jump label. 482 { 483 // TODO: is this right? 484 uint32_t instr_index = (instruction & 0x1ffffff); 485 uint32_t target = (instr_index << 2); 486 target |= (reinterpret_cast<uintptr_t>(instr_ptr + 4) & 0xf0000000); 487 args << reinterpret_cast<void*>(target); 488 } 489 break; 490 case 'l': // 9-bit signed offset 491 { 492 int32_t offset = static_cast<int16_t>(instruction) >> 7; 493 args << StringPrintf("%+d(r%d)", offset, rs); 494 } 495 break; 496 case 'O': // +x(rs) 497 { 498 int32_t offset = static_cast<int16_t>(instruction & 0xffff); 499 args << StringPrintf("%+d(r%d)", offset, rs); 500 if (rs == 17) { 501 args << " ; "; 502 if (is64bit_) { 503 Thread::DumpThreadOffset<8>(args, offset); 504 } else { 505 Thread::DumpThreadOffset<4>(args, offset); 506 } 507 } 508 } 509 break; 510 case 'P': // 26-bit offset in bc. 511 { 512 int32_t offset = (instruction & 0x3ffffff) - ((instruction & 0x2000000) << 1); 513 offset <<= 2; 514 offset += 4; 515 args << FormatInstructionPointer(instr_ptr + offset); 516 args << StringPrintf(" ; %+d", offset); 517 } 518 break; 519 case 'p': // 19-bit offset in addiupc. 520 { 521 int32_t offset = (instruction & 0x7ffff) - ((instruction & 0x40000) << 1); 522 args << offset << " ; move r" << rs << ", "; 523 args << FormatInstructionPointer(instr_ptr + (offset << 2)); 524 } 525 break; 526 case 'S': args << 'r' << rs; break; 527 case 's': args << 'f' << rs; break; 528 case 'T': args << 'r' << rt; break; 529 case 't': args << 'f' << rt; break; 530 case 'Z': args << (rd + 1); break; // sz ([d]ext size). 531 case 'z': args << (rd - sa + 1); break; // sz ([d]ins size). 532 } 533 if (*(args_fmt + 1)) { 534 args << ", "; 535 } 536 } 537 break; 538 } 539 } 540 541 // Special cases for sequences of: 542 // pc-relative +/- 2GB branch: 543 // auipc reg, imm 544 // jic reg, imm 545 // pc-relative +/- 2GB branch and link: 546 // auipc reg, imm 547 // daddiu reg, reg, imm 548 // jialc reg, 0 549 if (((op == 0x36 && rs == 0 && rt != 0) || // jic 550 (op == 0x19 && rs == rt && rt != 0)) && // daddiu 551 last_ptr_ && (intptr_t)instr_ptr - (intptr_t)last_ptr_ == 4 && 552 (last_instr_ & 0xFC1F0000) == 0xEC1E0000 && // auipc 553 ((last_instr_ >> 21) & 0x1F) == rt) { 554 uint32_t offset = (last_instr_ << 16) | (instruction & 0xFFFF); 555 offset -= (offset & 0x8000) << 1; 556 offset -= 4; 557 if (op == 0x36) { 558 args << " ; b "; 559 } else { 560 args << " ; move r" << rt << ", "; 561 } 562 args << FormatInstructionPointer(instr_ptr + (int32_t)offset); 563 args << StringPrintf(" ; %+d", (int32_t)offset); 564 } 565 566 os << FormatInstructionPointer(instr_ptr) 567 << StringPrintf(": %08x\t%-7s ", instruction, opcode.c_str()) 568 << args.str() << '\n'; 569 last_ptr_ = instr_ptr; 570 last_instr_ = instruction; 571 return 4; 572 } 573 574 void DisassemblerMips::Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) { 575 for (const uint8_t* cur = begin; cur < end; cur += 4) { 576 Dump(os, cur); 577 } 578 } 579 580 } // namespace mips 581 } // namespace art 582
