| 1 | /* Disassembler code for Renesas RX. |
| 2 | Copyright (C) 2008-2020 Free Software Foundation, Inc. |
| 3 | Contributed by Red Hat. |
| 4 | Written by DJ Delorie. |
| 5 | |
| 6 | This file is part of the GNU opcodes library. |
| 7 | |
| 8 | This library is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3, or (at your option) |
| 11 | any later version. |
| 12 | |
| 13 | It is distributed in the hope that it will be useful, but WITHOUT |
| 14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 15 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| 16 | License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | MA 02110-1301, USA. */ |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include <stdio.h> |
| 25 | |
| 26 | #include "bfd.h" |
| 27 | #include "dis-asm.h" |
| 28 | #include "opcode/rx.h" |
| 29 | #include "libiberty.h" |
| 30 | #include "opintl.h" |
| 31 | |
| 32 | #include <setjmp.h> |
| 33 | |
| 34 | typedef struct |
| 35 | { |
| 36 | bfd_vma pc; |
| 37 | disassemble_info * dis; |
| 38 | } RX_Data; |
| 39 | |
| 40 | struct private |
| 41 | { |
| 42 | OPCODES_SIGJMP_BUF bailout; |
| 43 | }; |
| 44 | |
| 45 | static int |
| 46 | rx_get_byte (void * vdata) |
| 47 | { |
| 48 | bfd_byte buf[1]; |
| 49 | RX_Data *rx_data = (RX_Data *) vdata; |
| 50 | int status; |
| 51 | |
| 52 | status = rx_data->dis->read_memory_func (rx_data->pc, |
| 53 | buf, |
| 54 | 1, |
| 55 | rx_data->dis); |
| 56 | if (status != 0) |
| 57 | { |
| 58 | struct private *priv = (struct private *) rx_data->dis->private_data; |
| 59 | |
| 60 | rx_data->dis->memory_error_func (status, rx_data->pc, |
| 61 | rx_data->dis); |
| 62 | OPCODES_SIGLONGJMP (priv->bailout, 1); |
| 63 | } |
| 64 | |
| 65 | rx_data->pc ++; |
| 66 | return buf[0]; |
| 67 | } |
| 68 | |
| 69 | static char const * size_names[RX_MAX_SIZE] = |
| 70 | { |
| 71 | "", ".b", ".ub", ".b", ".w", ".uw", ".w", ".a", ".l", "", "<error>" |
| 72 | }; |
| 73 | |
| 74 | static char const * opsize_names[RX_MAX_SIZE] = |
| 75 | { |
| 76 | "", ".b", ".b", ".b", ".w", ".w", ".w", ".a", ".l", ".d", "<error>" |
| 77 | }; |
| 78 | |
| 79 | static char const * register_names[] = |
| 80 | { |
| 81 | /* General registers. */ |
| 82 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 83 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 84 | /* Control registers. */ |
| 85 | "psw", "pc", "usp", "fpsw", NULL, NULL, NULL, NULL, |
| 86 | "bpsw", "bpc", "isp", "fintv", "intb", "extb", NULL, NULL, |
| 87 | "a0", "a1", NULL, NULL, NULL, NULL, NULL, NULL, |
| 88 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
| 89 | }; |
| 90 | |
| 91 | static char const * condition_names[] = |
| 92 | { |
| 93 | /* Condition codes. */ |
| 94 | "eq", "ne", "c", "nc", "gtu", "leu", "pz", "n", |
| 95 | "ge", "lt", "gt", "le", "o", "no", "<invalid>", "<invalid>" |
| 96 | }; |
| 97 | |
| 98 | static const char * flag_names[] = |
| 99 | { |
| 100 | "c", "z", "s", "o", "", "", "", "", |
| 101 | "", "", "", "", "", "", "", "", |
| 102 | "i", "u", "", "", "", "", "", "" |
| 103 | "", "", "", "", "", "", "", "", |
| 104 | }; |
| 105 | |
| 106 | static const char * double_register_names[] = |
| 107 | { |
| 108 | "dr0", "dr1", "dr2", "dr3", "dr4", "dr5", "dr6", "dr7", |
| 109 | "dr8", "dr9", "dr10", "dr11", "dr12", "dr13", "dr14", "dr15", |
| 110 | }; |
| 111 | |
| 112 | static const char * double_register_high_names[] = |
| 113 | { |
| 114 | "drh0", "drh1", "drh2", "drh3", "drh4", "drh5", "drh6", "drh7", |
| 115 | "drh8", "drh9", "drh10", "drh11", "drh12", "drh13", "drh14", "drh15", |
| 116 | }; |
| 117 | |
| 118 | static const char * double_register_low_names[] = |
| 119 | { |
| 120 | "drl0", "drl1", "drl2", "drl3", "drl4", "drl5", "drl6", "drl7", |
| 121 | "drl8", "drl9", "drl10", "drl11", "drl12", "drl13", "drl14", "drl15", |
| 122 | }; |
| 123 | |
| 124 | static const char * double_control_register_names[] = |
| 125 | { |
| 126 | "dpsw", "dcmr", "decnt", "depc", |
| 127 | }; |
| 128 | |
| 129 | static const char * double_condition_names[] = |
| 130 | { |
| 131 | "", "un", "eq", "", "lt", "", "le", |
| 132 | }; |
| 133 | |
| 134 | static inline const char * |
| 135 | get_register_name (unsigned int reg) |
| 136 | { |
| 137 | if (reg < ARRAY_SIZE (register_names)) |
| 138 | return register_names[reg]; |
| 139 | return _("<invalid register number>"); |
| 140 | } |
| 141 | |
| 142 | static inline const char * |
| 143 | get_condition_name (unsigned int cond) |
| 144 | { |
| 145 | if (cond < ARRAY_SIZE (condition_names)) |
| 146 | return condition_names[cond]; |
| 147 | return _("<invalid condition code>"); |
| 148 | } |
| 149 | |
| 150 | static inline const char * |
| 151 | get_flag_name (unsigned int flag) |
| 152 | { |
| 153 | if (flag < ARRAY_SIZE (flag_names)) |
| 154 | return flag_names[flag]; |
| 155 | return _("<invalid flag>"); |
| 156 | } |
| 157 | |
| 158 | static inline const char * |
| 159 | get_double_register_name (unsigned int reg) |
| 160 | { |
| 161 | if (reg < ARRAY_SIZE (double_register_names)) |
| 162 | return double_register_names[reg]; |
| 163 | return _("<invalid register number>"); |
| 164 | } |
| 165 | |
| 166 | static inline const char * |
| 167 | get_double_register_high_name (unsigned int reg) |
| 168 | { |
| 169 | if (reg < ARRAY_SIZE (double_register_high_names)) |
| 170 | return double_register_high_names[reg]; |
| 171 | return _("<invalid register number>"); |
| 172 | } |
| 173 | |
| 174 | static inline const char * |
| 175 | get_double_register_low_name (unsigned int reg) |
| 176 | { |
| 177 | if (reg < ARRAY_SIZE (double_register_low_names)) |
| 178 | return double_register_low_names[reg]; |
| 179 | return _("<invalid register number>"); |
| 180 | } |
| 181 | |
| 182 | static inline const char * |
| 183 | get_double_control_register_name (unsigned int reg) |
| 184 | { |
| 185 | if (reg < ARRAY_SIZE (double_control_register_names)) |
| 186 | return double_control_register_names[reg]; |
| 187 | return _("<invalid register number>"); |
| 188 | } |
| 189 | |
| 190 | static inline const char * |
| 191 | get_double_condition_name (unsigned int cond) |
| 192 | { |
| 193 | if (cond < ARRAY_SIZE (double_condition_names)) |
| 194 | return double_condition_names[cond]; |
| 195 | return _("<invalid condition code>"); |
| 196 | } |
| 197 | |
| 198 | static inline const char * |
| 199 | get_opsize_name (unsigned int opsize) |
| 200 | { |
| 201 | if (opsize < ARRAY_SIZE (opsize_names)) |
| 202 | return opsize_names[opsize]; |
| 203 | return _("<invalid opsize>"); |
| 204 | } |
| 205 | |
| 206 | static inline const char * |
| 207 | get_size_name (unsigned int size) |
| 208 | { |
| 209 | if (size < ARRAY_SIZE (size_names)) |
| 210 | return size_names[size]; |
| 211 | return _("<invalid size>"); |
| 212 | } |
| 213 | |
| 214 | |
| 215 | int |
| 216 | print_insn_rx (bfd_vma addr, disassemble_info * dis) |
| 217 | { |
| 218 | int rv; |
| 219 | RX_Data rx_data; |
| 220 | RX_Opcode_Decoded opcode; |
| 221 | const char * s; |
| 222 | struct private priv; |
| 223 | |
| 224 | dis->private_data = (PTR) &priv; |
| 225 | rx_data.pc = addr; |
| 226 | rx_data.dis = dis; |
| 227 | |
| 228 | if (OPCODES_SIGSETJMP (priv.bailout) != 0) |
| 229 | { |
| 230 | /* Error return. */ |
| 231 | return -1; |
| 232 | } |
| 233 | |
| 234 | rv = rx_decode_opcode (addr, &opcode, rx_get_byte, &rx_data); |
| 235 | |
| 236 | dis->bytes_per_line = 10; |
| 237 | |
| 238 | #define PR (dis->fprintf_func) |
| 239 | #define PS (dis->stream) |
| 240 | #define PC(c) PR (PS, "%c", c) |
| 241 | |
| 242 | /* Detect illegal instructions. */ |
| 243 | if (opcode.op[0].size == RX_Bad_Size |
| 244 | || register_names [opcode.op[0].reg] == NULL |
| 245 | || register_names [opcode.op[1].reg] == NULL |
| 246 | || register_names [opcode.op[2].reg] == NULL) |
| 247 | { |
| 248 | bfd_byte buf[10]; |
| 249 | int i; |
| 250 | |
| 251 | PR (PS, ".byte "); |
| 252 | rx_data.dis->read_memory_func (rx_data.pc - rv, buf, rv, rx_data.dis); |
| 253 | |
| 254 | for (i = 0 ; i < rv; i++) |
| 255 | PR (PS, "0x%02x ", buf[i]); |
| 256 | return rv; |
| 257 | } |
| 258 | |
| 259 | for (s = opcode.syntax; *s; s++) |
| 260 | { |
| 261 | if (*s != '%') |
| 262 | { |
| 263 | PC (*s); |
| 264 | } |
| 265 | else |
| 266 | { |
| 267 | RX_Opcode_Operand * oper; |
| 268 | int do_size = 0; |
| 269 | int do_hex = 0; |
| 270 | int do_addr = 0; |
| 271 | |
| 272 | s ++; |
| 273 | |
| 274 | if (*s == 'S') |
| 275 | { |
| 276 | do_size = 1; |
| 277 | s++; |
| 278 | } |
| 279 | if (*s == 'x') |
| 280 | { |
| 281 | do_hex = 1; |
| 282 | s++; |
| 283 | } |
| 284 | if (*s == 'a') |
| 285 | { |
| 286 | do_addr = 1; |
| 287 | s++; |
| 288 | } |
| 289 | |
| 290 | switch (*s) |
| 291 | { |
| 292 | case '%': |
| 293 | PC ('%'); |
| 294 | break; |
| 295 | |
| 296 | case 's': |
| 297 | PR (PS, "%s", get_opsize_name (opcode.size)); |
| 298 | break; |
| 299 | |
| 300 | case 'b': |
| 301 | s ++; |
| 302 | if (*s == 'f') |
| 303 | { |
| 304 | int imm = opcode.op[2].addend; |
| 305 | int slsb, dlsb, width; |
| 306 | |
| 307 | dlsb = (imm >> 5) & 0x1f; |
| 308 | slsb = (imm & 0x1f); |
| 309 | slsb = (slsb >= 0x10?(slsb ^ 0x1f) + 1:slsb); |
| 310 | slsb = dlsb - slsb; |
| 311 | slsb = (slsb < 0?-slsb:slsb); |
| 312 | width = ((imm >> 10) & 0x1f) - dlsb; |
| 313 | PR (PS, "#%d, #%d, #%d, %s, %s", |
| 314 | slsb, dlsb, width, |
| 315 | get_register_name (opcode.op[1].reg), |
| 316 | get_register_name (opcode.op[0].reg)); |
| 317 | } |
| 318 | break; |
| 319 | case '0': |
| 320 | case '1': |
| 321 | case '2': |
| 322 | oper = opcode.op + (*s - '0'); |
| 323 | if (do_size) |
| 324 | { |
| 325 | if (oper->type == RX_Operand_Indirect || oper->type == RX_Operand_Zero_Indirect) |
| 326 | PR (PS, "%s", get_size_name (oper->size)); |
| 327 | } |
| 328 | else |
| 329 | switch (oper->type) |
| 330 | { |
| 331 | case RX_Operand_Immediate: |
| 332 | if (do_addr) |
| 333 | dis->print_address_func (oper->addend, dis); |
| 334 | else if (do_hex |
| 335 | || oper->addend > 999 |
| 336 | || oper->addend < -999) |
| 337 | PR (PS, "%#x", oper->addend); |
| 338 | else |
| 339 | PR (PS, "%d", oper->addend); |
| 340 | break; |
| 341 | case RX_Operand_Register: |
| 342 | case RX_Operand_TwoReg: |
| 343 | PR (PS, "%s", get_register_name (oper->reg)); |
| 344 | break; |
| 345 | case RX_Operand_Indirect: |
| 346 | PR (PS, "%d[%s]", oper->addend, get_register_name (oper->reg)); |
| 347 | break; |
| 348 | case RX_Operand_Zero_Indirect: |
| 349 | PR (PS, "[%s]", get_register_name (oper->reg)); |
| 350 | break; |
| 351 | case RX_Operand_Postinc: |
| 352 | PR (PS, "[%s+]", get_register_name (oper->reg)); |
| 353 | break; |
| 354 | case RX_Operand_Predec: |
| 355 | PR (PS, "[-%s]", get_register_name (oper->reg)); |
| 356 | break; |
| 357 | case RX_Operand_Condition: |
| 358 | PR (PS, "%s", get_condition_name (oper->reg)); |
| 359 | break; |
| 360 | case RX_Operand_Flag: |
| 361 | PR (PS, "%s", get_flag_name (oper->reg)); |
| 362 | break; |
| 363 | case RX_Operand_DoubleReg: |
| 364 | PR (PS, "%s", get_double_register_name (oper->reg)); |
| 365 | break; |
| 366 | case RX_Operand_DoubleRegH: |
| 367 | PR (PS, "%s", get_double_register_high_name (oper->reg)); |
| 368 | break; |
| 369 | case RX_Operand_DoubleRegL: |
| 370 | PR (PS, "%s", get_double_register_low_name (oper->reg)); |
| 371 | break; |
| 372 | case RX_Operand_DoubleCReg: |
| 373 | PR (PS, "%s", get_double_control_register_name (oper->reg)); |
| 374 | break; |
| 375 | case RX_Operand_DoubleCond: |
| 376 | PR (PS, "%s", get_double_condition_name (oper->reg)); |
| 377 | break; |
| 378 | default: |
| 379 | PR (PS, "[???]"); |
| 380 | break; |
| 381 | } |
| 382 | } |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | return rv; |
| 387 | } |