| 1 | /* Disassemble SH64 instructions. |
| 2 | Copyright 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of the GNU General Public License as published by |
| 6 | the Free Software Foundation; either version 2 of the License, or |
| 7 | (at your option) any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software |
| 16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | |
| 20 | #include "dis-asm.h" |
| 21 | #include "sysdep.h" |
| 22 | #include "sh64-opc.h" |
| 23 | #include "libiberty.h" |
| 24 | |
| 25 | /* We need to refer to the ELF header structure. */ |
| 26 | #include "elf-bfd.h" |
| 27 | #include "elf/sh.h" |
| 28 | #include "elf32-sh64.h" |
| 29 | |
| 30 | #define ELF_MODE32_CODE_LABEL_P(SYM) \ |
| 31 | (((elf_symbol_type *) (SYM))->internal_elf_sym.st_other & STO_SH5_ISA32) |
| 32 | |
| 33 | #define SAVED_MOVI_R(INFO) \ |
| 34 | (((struct sh64_disassemble_info *) ((INFO)->private_data))->address_reg) |
| 35 | |
| 36 | #define SAVED_MOVI_IMM(INFO) \ |
| 37 | (((struct sh64_disassemble_info *) ((INFO)->private_data))->built_address) |
| 38 | |
| 39 | struct sh64_disassemble_info |
| 40 | { |
| 41 | /* When we see a MOVI, we save the register and the value, and merge a |
| 42 | subsequent SHORI and display the address, if there is one. */ |
| 43 | unsigned int address_reg; |
| 44 | bfd_signed_vma built_address; |
| 45 | |
| 46 | /* This is the range decriptor for the current address. It is kept |
| 47 | around for the next call. */ |
| 48 | sh64_elf_crange crange; |
| 49 | }; |
| 50 | |
| 51 | /* Each item in the table is a mask to indicate which bits to be set |
| 52 | to determine an instruction's operator. |
| 53 | The index is as same as the instruction in the opcode table. |
| 54 | Note that some archs have this as a field in the opcode table. */ |
| 55 | static unsigned long *shmedia_opcode_mask_table; |
| 56 | |
| 57 | static void initialize_shmedia_opcode_mask_table PARAMS ((void)); |
| 58 | static int print_insn_shmedia PARAMS ((bfd_vma, disassemble_info *)); |
| 59 | static const char *creg_name PARAMS ((int)); |
| 60 | static bfd_boolean init_sh64_disasm_info PARAMS ((struct disassemble_info *)); |
| 61 | static enum sh64_elf_cr_type sh64_get_contents_type_disasm |
| 62 | PARAMS ((bfd_vma, struct disassemble_info *)); |
| 63 | |
| 64 | /* Initialize the SH64 opcode mask table for each instruction in SHmedia |
| 65 | mode. */ |
| 66 | |
| 67 | static void |
| 68 | initialize_shmedia_opcode_mask_table () |
| 69 | { |
| 70 | int n_opc; |
| 71 | int n; |
| 72 | |
| 73 | /* Calculate number of opcodes. */ |
| 74 | for (n_opc = 0; shmedia_table[n_opc].name != NULL; n_opc++) |
| 75 | ; |
| 76 | |
| 77 | shmedia_opcode_mask_table |
| 78 | = xmalloc (sizeof (shmedia_opcode_mask_table[0]) * n_opc); |
| 79 | |
| 80 | for (n = 0; n < n_opc; n++) |
| 81 | { |
| 82 | int i; |
| 83 | |
| 84 | unsigned long mask = 0; |
| 85 | |
| 86 | for (i = 0; shmedia_table[n].arg[i] != A_NONE; i++) |
| 87 | { |
| 88 | int offset = shmedia_table[n].nibbles[i]; |
| 89 | int length; |
| 90 | |
| 91 | switch (shmedia_table[n].arg[i]) |
| 92 | { |
| 93 | case A_GREG_M: |
| 94 | case A_GREG_N: |
| 95 | case A_GREG_D: |
| 96 | case A_CREG_K: |
| 97 | case A_CREG_J: |
| 98 | case A_FREG_G: |
| 99 | case A_FREG_H: |
| 100 | case A_FREG_F: |
| 101 | case A_DREG_G: |
| 102 | case A_DREG_H: |
| 103 | case A_DREG_F: |
| 104 | case A_FMREG_G: |
| 105 | case A_FMREG_H: |
| 106 | case A_FMREG_F: |
| 107 | case A_FPREG_G: |
| 108 | case A_FPREG_H: |
| 109 | case A_FPREG_F: |
| 110 | case A_FVREG_G: |
| 111 | case A_FVREG_H: |
| 112 | case A_FVREG_F: |
| 113 | case A_REUSE_PREV: |
| 114 | length = 6; |
| 115 | break; |
| 116 | |
| 117 | case A_TREG_A: |
| 118 | case A_TREG_B: |
| 119 | length = 3; |
| 120 | break; |
| 121 | |
| 122 | case A_IMMM: |
| 123 | abort (); |
| 124 | break; |
| 125 | |
| 126 | case A_IMMU5: |
| 127 | length = 5; |
| 128 | break; |
| 129 | |
| 130 | case A_IMMS6: |
| 131 | case A_IMMU6: |
| 132 | case A_IMMS6BY32: |
| 133 | length = 6; |
| 134 | break; |
| 135 | |
| 136 | case A_IMMS10: |
| 137 | case A_IMMS10BY1: |
| 138 | case A_IMMS10BY2: |
| 139 | case A_IMMS10BY4: |
| 140 | case A_IMMS10BY8: |
| 141 | length = 10; |
| 142 | break; |
| 143 | |
| 144 | case A_IMMU16: |
| 145 | case A_IMMS16: |
| 146 | case A_PCIMMS16BY4: |
| 147 | case A_PCIMMS16BY4_PT: |
| 148 | length = 16; |
| 149 | break; |
| 150 | |
| 151 | default: |
| 152 | abort (); |
| 153 | length = 0; |
| 154 | break; |
| 155 | } |
| 156 | |
| 157 | if (length != 0) |
| 158 | mask |= (0xffffffff >> (32 - length)) << offset; |
| 159 | } |
| 160 | shmedia_opcode_mask_table[n] = 0xffffffff & ~mask; |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | /* Get a predefined control-register-name, or return NULL. */ |
| 165 | |
| 166 | const char * |
| 167 | creg_name (cregno) |
| 168 | int cregno; |
| 169 | { |
| 170 | const shmedia_creg_info *cregp; |
| 171 | |
| 172 | /* If control register usage is common enough, change this to search a |
| 173 | hash-table. */ |
| 174 | for (cregp = shmedia_creg_table; cregp->name != NULL; cregp++) |
| 175 | { |
| 176 | if (cregp->cregno == cregno) |
| 177 | return cregp->name; |
| 178 | } |
| 179 | |
| 180 | return NULL; |
| 181 | } |
| 182 | |
| 183 | /* Main function to disassemble SHmedia instructions. */ |
| 184 | |
| 185 | static int |
| 186 | print_insn_shmedia (memaddr, info) |
| 187 | bfd_vma memaddr; |
| 188 | struct disassemble_info *info; |
| 189 | { |
| 190 | fprintf_ftype fprintf_fn = info->fprintf_func; |
| 191 | void *stream = info->stream; |
| 192 | |
| 193 | unsigned char insn[4]; |
| 194 | unsigned long instruction; |
| 195 | int status; |
| 196 | int n; |
| 197 | const shmedia_opcode_info *op; |
| 198 | int i; |
| 199 | unsigned int r = 0; |
| 200 | long imm = 0; |
| 201 | bfd_vma disp_pc_addr; |
| 202 | |
| 203 | status = info->read_memory_func (memaddr, insn, 4, info); |
| 204 | |
| 205 | /* If we can't read four bytes, something is wrong. Display any data we |
| 206 | can get as .byte:s. */ |
| 207 | if (status != 0) |
| 208 | { |
| 209 | int i; |
| 210 | |
| 211 | for (i = 0; i < 3; i++) |
| 212 | { |
| 213 | status = info->read_memory_func (memaddr + i, insn, 1, info); |
| 214 | if (status != 0) |
| 215 | break; |
| 216 | (*fprintf_fn) (stream, "%s0x%02x", |
| 217 | i == 0 ? ".byte " : ", ", |
| 218 | insn[0]); |
| 219 | } |
| 220 | |
| 221 | return i ? i : -1; |
| 222 | } |
| 223 | |
| 224 | /* Rearrange the bytes to make up an instruction. */ |
| 225 | if (info->endian == BFD_ENDIAN_LITTLE) |
| 226 | instruction = bfd_getl32 (insn); |
| 227 | else |
| 228 | instruction = bfd_getb32 (insn); |
| 229 | |
| 230 | /* FIXME: Searching could be implemented using a hash on relevant |
| 231 | fields. */ |
| 232 | for (n = 0, op = shmedia_table; |
| 233 | op->name != NULL |
| 234 | && ((instruction & shmedia_opcode_mask_table[n]) != op->opcode_base); |
| 235 | n++, op++) |
| 236 | ; |
| 237 | |
| 238 | /* FIXME: We should also check register number constraints. */ |
| 239 | if (op->name == NULL) |
| 240 | { |
| 241 | fprintf_fn (stream, ".long 0x%08x", instruction); |
| 242 | return 4; |
| 243 | } |
| 244 | |
| 245 | fprintf_fn (stream, "%s\t", op->name); |
| 246 | |
| 247 | for (i = 0; i < 3 && op->arg[i] != A_NONE; i++) |
| 248 | { |
| 249 | unsigned long temp = instruction >> op->nibbles[i]; |
| 250 | int by_number = 0; |
| 251 | |
| 252 | if (i > 0 && op->arg[i] != A_REUSE_PREV) |
| 253 | fprintf_fn (stream, ","); |
| 254 | |
| 255 | switch (op->arg[i]) |
| 256 | { |
| 257 | case A_REUSE_PREV: |
| 258 | continue; |
| 259 | |
| 260 | case A_GREG_M: |
| 261 | case A_GREG_N: |
| 262 | case A_GREG_D: |
| 263 | r = temp & 0x3f; |
| 264 | fprintf_fn (stream, "r%d", r); |
| 265 | break; |
| 266 | |
| 267 | case A_FVREG_F: |
| 268 | case A_FVREG_G: |
| 269 | case A_FVREG_H: |
| 270 | r = temp & 0x3f; |
| 271 | fprintf_fn (stream, "fv%d", r); |
| 272 | break; |
| 273 | |
| 274 | case A_FPREG_F: |
| 275 | case A_FPREG_G: |
| 276 | case A_FPREG_H: |
| 277 | r = temp & 0x3f; |
| 278 | fprintf_fn (stream, "fp%d", r); |
| 279 | break; |
| 280 | |
| 281 | case A_FMREG_F: |
| 282 | case A_FMREG_G: |
| 283 | case A_FMREG_H: |
| 284 | r = temp & 0x3f; |
| 285 | fprintf_fn (stream, "mtrx%d", r); |
| 286 | break; |
| 287 | |
| 288 | case A_CREG_K: |
| 289 | case A_CREG_J: |
| 290 | { |
| 291 | const char *name; |
| 292 | r = temp & 0x3f; |
| 293 | |
| 294 | name = creg_name (r); |
| 295 | |
| 296 | if (name != NULL) |
| 297 | fprintf_fn (stream, "%s", name); |
| 298 | else |
| 299 | fprintf_fn (stream, "cr%d", r); |
| 300 | } |
| 301 | break; |
| 302 | |
| 303 | case A_FREG_G: |
| 304 | case A_FREG_H: |
| 305 | case A_FREG_F: |
| 306 | r = temp & 0x3f; |
| 307 | fprintf_fn (stream, "fr%d", r); |
| 308 | break; |
| 309 | |
| 310 | case A_DREG_G: |
| 311 | case A_DREG_H: |
| 312 | case A_DREG_F: |
| 313 | r = temp & 0x3f; |
| 314 | fprintf_fn (stream, "dr%d", r); |
| 315 | break; |
| 316 | |
| 317 | case A_TREG_A: |
| 318 | case A_TREG_B: |
| 319 | r = temp & 0x7; |
| 320 | fprintf_fn (stream, "tr%d", r); |
| 321 | break; |
| 322 | |
| 323 | /* A signed 6-bit number. */ |
| 324 | case A_IMMS6: |
| 325 | imm = temp & 0x3f; |
| 326 | if (imm & (unsigned long) 0x20) |
| 327 | imm |= ~(unsigned long) 0x3f; |
| 328 | fprintf_fn (stream, "%d", imm); |
| 329 | break; |
| 330 | |
| 331 | /* A signed 6-bit number, multiplied by 32 when used. */ |
| 332 | case A_IMMS6BY32: |
| 333 | imm = temp & 0x3f; |
| 334 | if (imm & (unsigned long) 0x20) |
| 335 | imm |= ~(unsigned long) 0x3f; |
| 336 | fprintf_fn (stream, "%d", imm * 32); |
| 337 | break; |
| 338 | |
| 339 | /* A signed 10-bit number, multiplied by 8 when used. */ |
| 340 | case A_IMMS10BY8: |
| 341 | by_number++; |
| 342 | /* Fall through. */ |
| 343 | |
| 344 | /* A signed 10-bit number, multiplied by 4 when used. */ |
| 345 | case A_IMMS10BY4: |
| 346 | by_number++; |
| 347 | /* Fall through. */ |
| 348 | |
| 349 | /* A signed 10-bit number, multiplied by 2 when used. */ |
| 350 | case A_IMMS10BY2: |
| 351 | by_number++; |
| 352 | /* Fall through. */ |
| 353 | |
| 354 | /* A signed 10-bit number. */ |
| 355 | case A_IMMS10: |
| 356 | case A_IMMS10BY1: |
| 357 | imm = temp & 0x3ff; |
| 358 | if (imm & (unsigned long) 0x200) |
| 359 | imm |= ~(unsigned long) 0x3ff; |
| 360 | imm <<= by_number; |
| 361 | fprintf_fn (stream, "%d", imm); |
| 362 | break; |
| 363 | |
| 364 | /* A signed 16-bit number. */ |
| 365 | case A_IMMS16: |
| 366 | imm = temp & 0xffff; |
| 367 | if (imm & (unsigned long) 0x8000) |
| 368 | imm |= ~((unsigned long) 0xffff); |
| 369 | fprintf_fn (stream, "%d", imm); |
| 370 | break; |
| 371 | |
| 372 | /* A PC-relative signed 16-bit number, multiplied by 4 when |
| 373 | used. */ |
| 374 | case A_PCIMMS16BY4: |
| 375 | imm = temp & 0xffff; /* 16 bits */ |
| 376 | if (imm & (unsigned long) 0x8000) |
| 377 | imm |= ~(unsigned long) 0xffff; |
| 378 | imm <<= 2; |
| 379 | disp_pc_addr = (bfd_vma) imm + memaddr; |
| 380 | (*info->print_address_func) (disp_pc_addr, info); |
| 381 | break; |
| 382 | |
| 383 | /* An unsigned 5-bit number. */ |
| 384 | case A_IMMU5: |
| 385 | imm = temp & 0x1f; |
| 386 | fprintf_fn (stream, "%d", imm); |
| 387 | break; |
| 388 | |
| 389 | /* An unsigned 6-bit number. */ |
| 390 | case A_IMMU6: |
| 391 | imm = temp & 0x3f; |
| 392 | fprintf_fn (stream, "%d", imm); |
| 393 | break; |
| 394 | |
| 395 | /* An unsigned 16-bit number. */ |
| 396 | case A_IMMU16: |
| 397 | imm = temp & 0xffff; |
| 398 | fprintf_fn (stream, "%d", imm); |
| 399 | break; |
| 400 | |
| 401 | default: |
| 402 | abort (); |
| 403 | break; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | /* FIXME: Looks like 32-bit values only are handled. |
| 408 | FIXME: PC-relative numbers aren't handled correctly. */ |
| 409 | if (op->opcode_base == (unsigned long) SHMEDIA_SHORI_OPC |
| 410 | && SAVED_MOVI_R (info) == r) |
| 411 | { |
| 412 | asection *section = info->section; |
| 413 | |
| 414 | /* Most callers do not set the section field correctly yet. Revert |
| 415 | to getting the section from symbols, if any. */ |
| 416 | if (section == NULL |
| 417 | && info->symbols != NULL |
| 418 | && bfd_asymbol_flavour (info->symbols[0]) == bfd_target_elf_flavour |
| 419 | && ! bfd_is_und_section (bfd_get_section (info->symbols[0])) |
| 420 | && ! bfd_is_abs_section (bfd_get_section (info->symbols[0]))) |
| 421 | section = bfd_get_section (info->symbols[0]); |
| 422 | |
| 423 | /* Only guess addresses when the contents of this section is fully |
| 424 | relocated. Otherwise, the value will be zero or perhaps even |
| 425 | bogus. */ |
| 426 | if (section == NULL |
| 427 | || section->owner == NULL |
| 428 | || elf_elfheader (section->owner)->e_type == ET_EXEC) |
| 429 | { |
| 430 | bfd_signed_vma shori_addr; |
| 431 | |
| 432 | shori_addr = SAVED_MOVI_IMM (info) << 16; |
| 433 | shori_addr |= imm; |
| 434 | |
| 435 | fprintf_fn (stream, "\t! 0x"); |
| 436 | (*info->print_address_func) (shori_addr, info); |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | if (op->opcode_base == SHMEDIA_MOVI_OPC) |
| 441 | { |
| 442 | SAVED_MOVI_IMM (info) = imm; |
| 443 | SAVED_MOVI_R (info) = r; |
| 444 | } |
| 445 | else |
| 446 | { |
| 447 | SAVED_MOVI_IMM (info) = 0; |
| 448 | SAVED_MOVI_R (info) = 255; |
| 449 | } |
| 450 | |
| 451 | return 4; |
| 452 | } |
| 453 | |
| 454 | /* Check the type of contents about to be disassembled. This is like |
| 455 | sh64_get_contents_type (which may be called from here), except that it |
| 456 | takes the same arguments as print_insn_* and does what can be done if |
| 457 | no section is available. */ |
| 458 | |
| 459 | static enum sh64_elf_cr_type |
| 460 | sh64_get_contents_type_disasm (memaddr, info) |
| 461 | bfd_vma memaddr; |
| 462 | struct disassemble_info *info; |
| 463 | { |
| 464 | struct sh64_disassemble_info *sh64_infop = info->private_data; |
| 465 | |
| 466 | /* Perhaps we have a region from a previous probe and it still counts |
| 467 | for this address? */ |
| 468 | if (sh64_infop->crange.cr_type != CRT_NONE |
| 469 | && memaddr >= sh64_infop->crange.cr_addr |
| 470 | && memaddr < sh64_infop->crange.cr_addr + sh64_infop->crange.cr_size) |
| 471 | return sh64_infop->crange.cr_type; |
| 472 | |
| 473 | /* If we have a section, try and use it. */ |
| 474 | if (info->section |
| 475 | && bfd_get_flavour (info->section->owner) == bfd_target_elf_flavour) |
| 476 | { |
| 477 | enum sh64_elf_cr_type cr_type |
| 478 | = sh64_get_contents_type (info->section, memaddr, |
| 479 | &sh64_infop->crange); |
| 480 | |
| 481 | if (cr_type != CRT_NONE) |
| 482 | return cr_type; |
| 483 | } |
| 484 | |
| 485 | /* If we have symbols, we can try and get at a section from *that*. */ |
| 486 | if (info->symbols != NULL |
| 487 | && bfd_asymbol_flavour (info->symbols[0]) == bfd_target_elf_flavour |
| 488 | && ! bfd_is_und_section (bfd_get_section (info->symbols[0])) |
| 489 | && ! bfd_is_abs_section (bfd_get_section (info->symbols[0]))) |
| 490 | { |
| 491 | enum sh64_elf_cr_type cr_type |
| 492 | = sh64_get_contents_type (bfd_get_section (info->symbols[0]), |
| 493 | memaddr, &sh64_infop->crange); |
| 494 | |
| 495 | if (cr_type != CRT_NONE) |
| 496 | return cr_type; |
| 497 | } |
| 498 | |
| 499 | /* We can make a reasonable guess based on the st_other field of a |
| 500 | symbol; for a BranchTarget this is marked as STO_SH5_ISA32 and then |
| 501 | it's most probably code there. */ |
| 502 | if (info->symbols |
| 503 | && bfd_asymbol_flavour (info->symbols[0]) == bfd_target_elf_flavour |
| 504 | && elf_symbol_from (bfd_asymbol_bfd (info->symbols[0]), |
| 505 | info->symbols[0])->internal_elf_sym.st_other |
| 506 | == STO_SH5_ISA32) |
| 507 | return CRT_SH5_ISA32; |
| 508 | |
| 509 | /* If all else fails, guess this is code and guess on the low bit set. */ |
| 510 | return (memaddr & 1) == 1 ? CRT_SH5_ISA32 : CRT_SH5_ISA16; |
| 511 | } |
| 512 | |
| 513 | /* Initialize static and dynamic disassembly state. */ |
| 514 | |
| 515 | static bfd_boolean |
| 516 | init_sh64_disasm_info (info) |
| 517 | struct disassemble_info *info; |
| 518 | { |
| 519 | struct sh64_disassemble_info *sh64_infop |
| 520 | = calloc (sizeof (*sh64_infop), 1); |
| 521 | |
| 522 | if (sh64_infop == NULL) |
| 523 | return FALSE; |
| 524 | |
| 525 | info->private_data = sh64_infop; |
| 526 | |
| 527 | SAVED_MOVI_IMM (info) = 0; |
| 528 | SAVED_MOVI_R (info) = 255; |
| 529 | |
| 530 | if (shmedia_opcode_mask_table == NULL) |
| 531 | initialize_shmedia_opcode_mask_table (); |
| 532 | |
| 533 | return TRUE; |
| 534 | } |
| 535 | |
| 536 | /* Main entry to disassemble SHmedia instructions, given an endian set in |
| 537 | INFO. Note that the simulator uses this as the main entry and does not |
| 538 | use any of the functions further below. */ |
| 539 | |
| 540 | int |
| 541 | print_insn_sh64x_media (memaddr, info) |
| 542 | bfd_vma memaddr; |
| 543 | struct disassemble_info *info; |
| 544 | { |
| 545 | if (info->private_data == NULL && ! init_sh64_disasm_info (info)) |
| 546 | return -1; |
| 547 | |
| 548 | /* Make reasonable output. */ |
| 549 | info->bytes_per_line = 4; |
| 550 | info->bytes_per_chunk = 4; |
| 551 | |
| 552 | return print_insn_shmedia (memaddr, info); |
| 553 | } |
| 554 | |
| 555 | /* Main entry to disassemble SHmedia insns. |
| 556 | If we see an SHcompact instruction, return -2. */ |
| 557 | |
| 558 | int |
| 559 | print_insn_sh64 (memaddr, info) |
| 560 | bfd_vma memaddr; |
| 561 | struct disassemble_info *info; |
| 562 | { |
| 563 | enum bfd_endian endian = info->endian; |
| 564 | enum sh64_elf_cr_type cr_type; |
| 565 | |
| 566 | if (info->private_data == NULL && ! init_sh64_disasm_info (info)) |
| 567 | return -1; |
| 568 | |
| 569 | cr_type = sh64_get_contents_type_disasm (memaddr, info); |
| 570 | if (cr_type != CRT_SH5_ISA16) |
| 571 | { |
| 572 | int length = 4 - (memaddr % 4); |
| 573 | info->display_endian = endian; |
| 574 | |
| 575 | /* If we got an uneven address to indicate SHmedia, adjust it. */ |
| 576 | if (cr_type == CRT_SH5_ISA32 && length == 3) |
| 577 | memaddr--, length = 4; |
| 578 | |
| 579 | /* Only disassemble on four-byte boundaries. Addresses that are not |
| 580 | a multiple of four can happen after a data region. */ |
| 581 | if (cr_type == CRT_SH5_ISA32 && length == 4) |
| 582 | return print_insn_sh64x_media (memaddr, info); |
| 583 | |
| 584 | /* We get CRT_DATA *only* for data regions in a mixed-contents |
| 585 | section. For sections with data only, we get indication of one |
| 586 | of the ISA:s. You may think that we shouldn't disassemble |
| 587 | section with only data if we can figure that out. However, the |
| 588 | disassembly function is by default not called for data-only |
| 589 | sections, so if the user explicitly specified disassembly of a |
| 590 | data section, that's what we should do. */ |
| 591 | if (cr_type == CRT_DATA || length != 4) |
| 592 | { |
| 593 | int status; |
| 594 | unsigned char data[4]; |
| 595 | struct sh64_disassemble_info *sh64_infop = info->private_data; |
| 596 | |
| 597 | if (length == 4 |
| 598 | && sh64_infop->crange.cr_type != CRT_NONE |
| 599 | && memaddr >= sh64_infop->crange.cr_addr |
| 600 | && memaddr < (sh64_infop->crange.cr_addr |
| 601 | + sh64_infop->crange.cr_size)) |
| 602 | length |
| 603 | = (sh64_infop->crange.cr_addr |
| 604 | + sh64_infop->crange.cr_size - memaddr); |
| 605 | |
| 606 | status |
| 607 | = (*info->read_memory_func) (memaddr, data, |
| 608 | length >= 4 ? 4 : length, info); |
| 609 | |
| 610 | if (status == 0 && length >= 4) |
| 611 | { |
| 612 | (*info->fprintf_func) (info->stream, ".long 0x%08lx", |
| 613 | endian == BFD_ENDIAN_BIG |
| 614 | ? (long) (bfd_getb32 (data)) |
| 615 | : (long) (bfd_getl32 (data))); |
| 616 | return 4; |
| 617 | } |
| 618 | else |
| 619 | { |
| 620 | int i; |
| 621 | |
| 622 | for (i = 0; i < length; i++) |
| 623 | { |
| 624 | status = info->read_memory_func (memaddr + i, data, 1, info); |
| 625 | if (status != 0) |
| 626 | break; |
| 627 | (*info->fprintf_func) (info->stream, "%s0x%02x", |
| 628 | i == 0 ? ".byte " : ", ", |
| 629 | data[0]); |
| 630 | } |
| 631 | |
| 632 | return i ? i : -1; |
| 633 | } |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | /* SH1 .. SH4 instruction, let caller handle it. */ |
| 638 | return -2; |
| 639 | } |