| 1 | /* BFD backend for Extended Tektronix Hex Format objects. |
| 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, |
| 3 | 2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation, Inc. |
| 4 | Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>. |
| 5 | |
| 6 | This file is part of BFD, the Binary File Descriptor library. |
| 7 | |
| 8 | This program 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 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public 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 | |
| 24 | /* SUBSECTION |
| 25 | Tektronix Hex Format handling |
| 26 | |
| 27 | DESCRIPTION |
| 28 | |
| 29 | Tek Hex records can hold symbols and data, but not |
| 30 | relocations. Their main application is communication with |
| 31 | devices like PROM programmers and ICE equipment. |
| 32 | |
| 33 | It seems that the sections are described as being really big, |
| 34 | the example I have says that the text section is 0..ffffffff. |
| 35 | BFD would barf with this, many apps would try to alloc 4GB to |
| 36 | read in the file. |
| 37 | |
| 38 | Tex Hex may contain many sections, but the data which comes in |
| 39 | has no tag saying which section it belongs to, so we create |
| 40 | one section for each block of data, called "blknnnn" which we |
| 41 | stick all the data into. |
| 42 | |
| 43 | TekHex may come out of order and there is no header, so an |
| 44 | initial scan is required to discover the minimum and maximum |
| 45 | addresses used to create the vma and size of the sections we |
| 46 | create. |
| 47 | We read in the data into pages of CHUNK_MASK+1 size and read |
| 48 | them out from that whenever we need to. |
| 49 | |
| 50 | Any number of sections may be created for output, we save them |
| 51 | up and output them when it's time to close the bfd. |
| 52 | |
| 53 | A TekHex record looks like: |
| 54 | EXAMPLE |
| 55 | %<block length><type><checksum><stuff><cr> |
| 56 | |
| 57 | DESCRIPTION |
| 58 | Where |
| 59 | o length |
| 60 | is the number of bytes in the record not including the % sign. |
| 61 | o type |
| 62 | is one of: |
| 63 | 3) symbol record |
| 64 | 6) data record |
| 65 | 8) termination record |
| 66 | |
| 67 | The data can come out of order, and may be discontigous. This is a |
| 68 | serial protocol, so big files are unlikely, so we keep a list of 8k chunks. */ |
| 69 | |
| 70 | #include "sysdep.h" |
| 71 | #include "bfd.h" |
| 72 | #include "libbfd.h" |
| 73 | #include "libiberty.h" |
| 74 | |
| 75 | typedef struct |
| 76 | { |
| 77 | bfd_vma low; |
| 78 | bfd_vma high; |
| 79 | } addr_range_type; |
| 80 | |
| 81 | typedef struct tekhex_symbol_struct |
| 82 | { |
| 83 | asymbol symbol; |
| 84 | struct tekhex_symbol_struct *prev; |
| 85 | } tekhex_symbol_type; |
| 86 | |
| 87 | static const char digs[] = "0123456789ABCDEF"; |
| 88 | |
| 89 | static char sum_block[256]; |
| 90 | |
| 91 | #define NOT_HEX 20 |
| 92 | #define NIBBLE(x) hex_value(x) |
| 93 | #define HEX(buffer) ((NIBBLE ((buffer)[0]) << 4) + NIBBLE ((buffer)[1])) |
| 94 | #define ISHEX(x) hex_p(x) |
| 95 | #define TOHEX(d, x) \ |
| 96 | (d)[1] = digs[(x) & 0xf]; \ |
| 97 | (d)[0] = digs[((x)>>4)&0xf]; |
| 98 | |
| 99 | /* Here's an example |
| 100 | %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75 |
| 101 | %1B3709T_SEGMENT1108FFFFFFFF |
| 102 | %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10 |
| 103 | %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710 |
| 104 | %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10 |
| 105 | %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10 |
| 106 | %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10 |
| 107 | %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10 |
| 108 | %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010 |
| 109 | %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10 |
| 110 | %2734D9T_SEGMENT8Bvoid$t15$151035_main10 |
| 111 | %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110 |
| 112 | %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214 |
| 113 | %07 8 10 10 |
| 114 | |
| 115 | explanation: |
| 116 | %3A6C6480004E56FFFC4E717063B0AEFFFC6D0652AEFFFC60F24E5E4E75 |
| 117 | ^ ^^ ^ ^-data |
| 118 | | || +------ 4 char integer 0x8000 |
| 119 | | |+-------- checksum |
| 120 | | +--------- type 6 (data record) |
| 121 | +----------- length 3a chars |
| 122 | <---------------------- 3a (58 chars) -------------------> |
| 123 | |
| 124 | %1B3709T_SEGMENT1108FFFFFFFF |
| 125 | ^ ^^ ^- 8 character integer 0xffffffff |
| 126 | | |+- 1 character integer 0 |
| 127 | | +-- type 1 symbol (section definition) |
| 128 | +------------ 9 char symbol T_SEGMENT |
| 129 | |
| 130 | %2B3AB9T_SEGMENT7Dgcc_compiled$1087hello$c10 |
| 131 | %373829T_SEGMENT80int$t1$r1$$214741080char$t2$r2$0$12710 |
| 132 | %373769T_SEGMENT80long$int$t3$r1$$1080unsigned$int$t4$10 |
| 133 | %373CA9T_SEGMENT80long$unsigned$in1080short$int$t6$r1$10 |
| 134 | %373049T_SEGMENT80long$long$int$t71080short$unsigned$i10 |
| 135 | %373A29T_SEGMENT80long$long$unsign1080signed$char$t10$10 |
| 136 | %373D69T_SEGMENT80unsigned$char$t11080float$t12$r1$4$010 |
| 137 | %373D19T_SEGMENT80double$t13$r1$8$1080long$double$t14$10 |
| 138 | %2734D9T_SEGMENT8Bvoid$t15$151035_main10 |
| 139 | %2F3CA9T_SEGMENT81$1081$1681$1E81$21487main$F110 |
| 140 | %2832F9T_SEGMENT83i$18FFFFFFFC81$1481$214 |
| 141 | %0781010 |
| 142 | |
| 143 | Turns into |
| 144 | sac@thepub$ ./objdump -dx -m m68k f |
| 145 | |
| 146 | f: file format tekhex |
| 147 | -----x--- 9/55728 -134219416 Sep 29 15:13 1995 f |
| 148 | architecture: UNKNOWN!, flags 0x00000010: |
| 149 | HAS_SYMS |
| 150 | start address 0x00000000 |
| 151 | SECTION 0 [D00000000] : size 00020000 vma 00000000 align 2**0 |
| 152 | ALLOC, LOAD |
| 153 | SECTION 1 [D00008000] : size 00002001 vma 00008000 align 2**0 |
| 154 | |
| 155 | SECTION 2 [T_SEGMENT] : size ffffffff vma 00000000 align 2**0 |
| 156 | |
| 157 | SYMBOL TABLE: |
| 158 | 00000000 g T_SEGMENT gcc_compiled$ |
| 159 | 00000000 g T_SEGMENT hello$c |
| 160 | 00000000 g T_SEGMENT int$t1$r1$$21474 |
| 161 | 00000000 g T_SEGMENT char$t2$r2$0$127 |
| 162 | 00000000 g T_SEGMENT long$int$t3$r1$$ |
| 163 | 00000000 g T_SEGMENT unsigned$int$t4$ |
| 164 | 00000000 g T_SEGMENT long$unsigned$in |
| 165 | 00000000 g T_SEGMENT short$int$t6$r1$ |
| 166 | 00000000 g T_SEGMENT long$long$int$t7 |
| 167 | 00000000 g T_SEGMENT short$unsigned$i |
| 168 | 00000000 g T_SEGMENT long$long$unsign |
| 169 | 00000000 g T_SEGMENT signed$char$t10$ |
| 170 | 00000000 g T_SEGMENT unsigned$char$t1 |
| 171 | 00000000 g T_SEGMENT float$t12$r1$4$0 |
| 172 | 00000000 g T_SEGMENT double$t13$r1$8$ |
| 173 | 00000000 g T_SEGMENT long$double$t14$ |
| 174 | 00000000 g T_SEGMENT void$t15$15 |
| 175 | 00000000 g T_SEGMENT _main |
| 176 | 00000000 g T_SEGMENT $ |
| 177 | 00000000 g T_SEGMENT $ |
| 178 | 00000000 g T_SEGMENT $ |
| 179 | 00000010 g T_SEGMENT $ |
| 180 | 00000000 g T_SEGMENT main$F1 |
| 181 | fcffffff g T_SEGMENT i$1 |
| 182 | 00000000 g T_SEGMENT $ |
| 183 | 00000010 g T_SEGMENT $ |
| 184 | |
| 185 | RELOCATION RECORDS FOR [D00000000]: (none) |
| 186 | |
| 187 | RELOCATION RECORDS FOR [D00008000]: (none) |
| 188 | |
| 189 | RELOCATION RECORDS FOR [T_SEGMENT]: (none) |
| 190 | |
| 191 | Disassembly of section D00000000: |
| 192 | ... |
| 193 | 00008000 ($+)7ff0 linkw fp,#-4 |
| 194 | 00008004 ($+)7ff4 nop |
| 195 | 00008006 ($+)7ff6 movel #99,d0 |
| 196 | 00008008 ($+)7ff8 cmpl fp@(-4),d0 |
| 197 | 0000800c ($+)7ffc blts 00008014 ($+)8004 |
| 198 | 0000800e ($+)7ffe addql #1,fp@(-4) |
| 199 | 00008012 ($+)8002 bras 00008006 ($+)7ff6 |
| 200 | 00008014 ($+)8004 unlk fp |
| 201 | 00008016 ($+)8006 rts |
| 202 | ... */ |
| 203 | |
| 204 | static void |
| 205 | tekhex_init (void) |
| 206 | { |
| 207 | unsigned int i; |
| 208 | static bfd_boolean inited = FALSE; |
| 209 | int val; |
| 210 | |
| 211 | if (! inited) |
| 212 | { |
| 213 | inited = TRUE; |
| 214 | hex_init (); |
| 215 | val = 0; |
| 216 | for (i = 0; i < 10; i++) |
| 217 | sum_block[i + '0'] = val++; |
| 218 | |
| 219 | for (i = 'A'; i <= 'Z'; i++) |
| 220 | sum_block[i] = val++; |
| 221 | |
| 222 | sum_block['$'] = val++; |
| 223 | sum_block['%'] = val++; |
| 224 | sum_block['.'] = val++; |
| 225 | sum_block['_'] = val++; |
| 226 | for (i = 'a'; i <= 'z'; i++) |
| 227 | sum_block[i] = val++; |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | /* The maximum number of bytes on a line is FF. */ |
| 232 | #define MAXCHUNK 0xff |
| 233 | /* The number of bytes we fit onto a line on output. */ |
| 234 | #define CHUNK 21 |
| 235 | |
| 236 | /* We cannot output our tekhexords as we see them, we have to glue them |
| 237 | together, this is done in this structure : */ |
| 238 | |
| 239 | struct tekhex_data_list_struct |
| 240 | { |
| 241 | unsigned char *data; |
| 242 | bfd_vma where; |
| 243 | bfd_size_type size; |
| 244 | struct tekhex_data_list_struct *next; |
| 245 | |
| 246 | }; |
| 247 | typedef struct tekhex_data_list_struct tekhex_data_list_type; |
| 248 | |
| 249 | #define CHUNK_MASK 0x1fff |
| 250 | |
| 251 | struct data_struct |
| 252 | { |
| 253 | char chunk_data[CHUNK_MASK + 1]; |
| 254 | char chunk_init[CHUNK_MASK + 1]; |
| 255 | bfd_vma vma; |
| 256 | struct data_struct *next; |
| 257 | }; |
| 258 | |
| 259 | typedef struct tekhex_data_struct |
| 260 | { |
| 261 | tekhex_data_list_type *head; |
| 262 | unsigned int type; |
| 263 | struct tekhex_symbol_struct *symbols; |
| 264 | struct data_struct *data; |
| 265 | } tdata_type; |
| 266 | |
| 267 | #define enda(x) (x->vma + x->size) |
| 268 | |
| 269 | static bfd_boolean |
| 270 | getvalue (char **srcp, bfd_vma *valuep) |
| 271 | { |
| 272 | char *src = *srcp; |
| 273 | bfd_vma value = 0; |
| 274 | unsigned int len; |
| 275 | |
| 276 | if (!ISHEX (*src)) |
| 277 | return FALSE; |
| 278 | |
| 279 | len = hex_value (*src++); |
| 280 | if (len == 0) |
| 281 | len = 16; |
| 282 | while (len--) |
| 283 | { |
| 284 | if (!ISHEX (*src)) |
| 285 | return FALSE; |
| 286 | value = value << 4 | hex_value (*src++); |
| 287 | } |
| 288 | |
| 289 | *srcp = src; |
| 290 | *valuep = value; |
| 291 | return TRUE; |
| 292 | } |
| 293 | |
| 294 | static bfd_boolean |
| 295 | getsym (char *dstp, char **srcp, unsigned int *lenp) |
| 296 | { |
| 297 | char *src = *srcp; |
| 298 | unsigned int i; |
| 299 | unsigned int len; |
| 300 | |
| 301 | if (!ISHEX (*src)) |
| 302 | return FALSE; |
| 303 | |
| 304 | len = hex_value (*src++); |
| 305 | if (len == 0) |
| 306 | len = 16; |
| 307 | for (i = 0; i < len; i++) |
| 308 | dstp[i] = src[i]; |
| 309 | dstp[i] = 0; |
| 310 | *srcp = src + i; |
| 311 | *lenp = len; |
| 312 | return TRUE; |
| 313 | } |
| 314 | |
| 315 | static struct data_struct * |
| 316 | find_chunk (bfd *abfd, bfd_vma vma) |
| 317 | { |
| 318 | struct data_struct *d = abfd->tdata.tekhex_data->data; |
| 319 | |
| 320 | vma &= ~CHUNK_MASK; |
| 321 | while (d && (d->vma) != vma) |
| 322 | d = d->next; |
| 323 | |
| 324 | if (!d) |
| 325 | { |
| 326 | /* No chunk for this address, so make one up. */ |
| 327 | d = (struct data_struct *) |
| 328 | bfd_zalloc (abfd, (bfd_size_type) sizeof (struct data_struct)); |
| 329 | |
| 330 | if (!d) |
| 331 | return NULL; |
| 332 | |
| 333 | d->next = abfd->tdata.tekhex_data->data; |
| 334 | d->vma = vma; |
| 335 | abfd->tdata.tekhex_data->data = d; |
| 336 | } |
| 337 | return d; |
| 338 | } |
| 339 | |
| 340 | static void |
| 341 | insert_byte (bfd *abfd, int value, bfd_vma addr) |
| 342 | { |
| 343 | /* Find the chunk that this byte needs and put it in. */ |
| 344 | struct data_struct *d = find_chunk (abfd, addr); |
| 345 | |
| 346 | d->chunk_data[addr & CHUNK_MASK] = value; |
| 347 | d->chunk_init[addr & CHUNK_MASK] = 1; |
| 348 | } |
| 349 | |
| 350 | /* The first pass is to find the names of all the sections, and see |
| 351 | how big the data is. */ |
| 352 | |
| 353 | static bfd_boolean |
| 354 | first_phase (bfd *abfd, int type, char *src) |
| 355 | { |
| 356 | asection *section = bfd_abs_section_ptr; |
| 357 | unsigned int len; |
| 358 | bfd_vma val; |
| 359 | char sym[17]; /* A symbol can only be 16chars long. */ |
| 360 | |
| 361 | switch (type) |
| 362 | { |
| 363 | case '6': |
| 364 | /* Data record - read it and store it. */ |
| 365 | { |
| 366 | bfd_vma addr; |
| 367 | |
| 368 | if (!getvalue (&src, &addr)) |
| 369 | return FALSE; |
| 370 | |
| 371 | while (*src) |
| 372 | { |
| 373 | insert_byte (abfd, HEX (src), addr); |
| 374 | src += 2; |
| 375 | addr++; |
| 376 | } |
| 377 | } |
| 378 | |
| 379 | return TRUE; |
| 380 | case '3': |
| 381 | /* Symbol record, read the segment. */ |
| 382 | if (!getsym (sym, &src, &len)) |
| 383 | return FALSE; |
| 384 | section = bfd_get_section_by_name (abfd, sym); |
| 385 | if (section == NULL) |
| 386 | { |
| 387 | char *n = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1); |
| 388 | |
| 389 | if (!n) |
| 390 | return FALSE; |
| 391 | memcpy (n, sym, len + 1); |
| 392 | section = bfd_make_section (abfd, n); |
| 393 | if (section == NULL) |
| 394 | return FALSE; |
| 395 | } |
| 396 | while (*src) |
| 397 | { |
| 398 | switch (*src) |
| 399 | { |
| 400 | case '1': /* Section range. */ |
| 401 | src++; |
| 402 | if (!getvalue (&src, §ion->vma)) |
| 403 | return FALSE; |
| 404 | if (!getvalue (&src, &val)) |
| 405 | return FALSE; |
| 406 | section->size = val - section->vma; |
| 407 | section->flags = SEC_HAS_CONTENTS | SEC_LOAD | SEC_ALLOC; |
| 408 | break; |
| 409 | case '0': |
| 410 | case '2': |
| 411 | case '3': |
| 412 | case '4': |
| 413 | case '6': |
| 414 | case '7': |
| 415 | case '8': |
| 416 | /* Symbols, add to section. */ |
| 417 | { |
| 418 | bfd_size_type amt = sizeof (tekhex_symbol_type); |
| 419 | tekhex_symbol_type *new_symbol = (tekhex_symbol_type *) |
| 420 | bfd_alloc (abfd, amt); |
| 421 | char stype = (*src); |
| 422 | |
| 423 | if (!new_symbol) |
| 424 | return FALSE; |
| 425 | new_symbol->symbol.the_bfd = abfd; |
| 426 | src++; |
| 427 | abfd->symcount++; |
| 428 | abfd->flags |= HAS_SYMS; |
| 429 | new_symbol->prev = abfd->tdata.tekhex_data->symbols; |
| 430 | abfd->tdata.tekhex_data->symbols = new_symbol; |
| 431 | if (!getsym (sym, &src, &len)) |
| 432 | return FALSE; |
| 433 | new_symbol->symbol.name = (const char *) |
| 434 | bfd_alloc (abfd, (bfd_size_type) len + 1); |
| 435 | if (!new_symbol->symbol.name) |
| 436 | return FALSE; |
| 437 | memcpy ((char *) (new_symbol->symbol.name), sym, len + 1); |
| 438 | new_symbol->symbol.section = section; |
| 439 | if (stype <= '4') |
| 440 | new_symbol->symbol.flags = (BSF_GLOBAL | BSF_EXPORT); |
| 441 | else |
| 442 | new_symbol->symbol.flags = BSF_LOCAL; |
| 443 | if (!getvalue (&src, &val)) |
| 444 | return FALSE; |
| 445 | new_symbol->symbol.value = val - section->vma; |
| 446 | break; |
| 447 | } |
| 448 | default: |
| 449 | return FALSE; |
| 450 | } |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | return TRUE; |
| 455 | } |
| 456 | |
| 457 | /* Pass over a tekhex, calling one of the above functions on each |
| 458 | record. */ |
| 459 | |
| 460 | static bfd_boolean |
| 461 | pass_over (bfd *abfd, bfd_boolean (*func) (bfd *, int, char *)) |
| 462 | { |
| 463 | unsigned int chars_on_line; |
| 464 | bfd_boolean is_eof = FALSE; |
| 465 | |
| 466 | /* To the front of the file. */ |
| 467 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 468 | return FALSE; |
| 469 | while (! is_eof) |
| 470 | { |
| 471 | char src[MAXCHUNK]; |
| 472 | char type; |
| 473 | |
| 474 | /* Find first '%'. */ |
| 475 | is_eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1); |
| 476 | while (*src != '%' && !is_eof) |
| 477 | is_eof = (bfd_boolean) (bfd_bread (src, (bfd_size_type) 1, abfd) != 1); |
| 478 | |
| 479 | if (is_eof) |
| 480 | break; |
| 481 | |
| 482 | /* Fetch the type and the length and the checksum. */ |
| 483 | if (bfd_bread (src, (bfd_size_type) 5, abfd) != 5) |
| 484 | return FALSE; |
| 485 | |
| 486 | type = src[2]; |
| 487 | |
| 488 | if (!ISHEX (src[0]) || !ISHEX (src[1])) |
| 489 | break; |
| 490 | |
| 491 | /* Already read five chars. */ |
| 492 | chars_on_line = HEX (src) - 5; |
| 493 | |
| 494 | if (chars_on_line >= MAXCHUNK) |
| 495 | return FALSE; |
| 496 | |
| 497 | if (bfd_bread (src, (bfd_size_type) chars_on_line, abfd) != chars_on_line) |
| 498 | return FALSE; |
| 499 | |
| 500 | /* Put a null at the end. */ |
| 501 | src[chars_on_line] = 0; |
| 502 | |
| 503 | if (!func (abfd, type, src)) |
| 504 | return FALSE; |
| 505 | } |
| 506 | |
| 507 | return TRUE; |
| 508 | } |
| 509 | |
| 510 | static long |
| 511 | tekhex_canonicalize_symtab (bfd *abfd, asymbol **table) |
| 512 | { |
| 513 | tekhex_symbol_type *p = abfd->tdata.tekhex_data->symbols; |
| 514 | unsigned int c = bfd_get_symcount (abfd); |
| 515 | |
| 516 | table[c] = 0; |
| 517 | while (p) |
| 518 | { |
| 519 | table[--c] = &(p->symbol); |
| 520 | p = p->prev; |
| 521 | } |
| 522 | |
| 523 | return bfd_get_symcount (abfd); |
| 524 | } |
| 525 | |
| 526 | static long |
| 527 | tekhex_get_symtab_upper_bound (bfd *abfd) |
| 528 | { |
| 529 | return (abfd->symcount + 1) * (sizeof (struct tekhex_asymbol_struct *)); |
| 530 | |
| 531 | } |
| 532 | |
| 533 | static bfd_boolean |
| 534 | tekhex_mkobject (bfd *abfd) |
| 535 | { |
| 536 | tdata_type *tdata; |
| 537 | |
| 538 | tdata = (tdata_type *) bfd_alloc (abfd, (bfd_size_type) sizeof (tdata_type)); |
| 539 | if (!tdata) |
| 540 | return FALSE; |
| 541 | abfd->tdata.tekhex_data = tdata; |
| 542 | tdata->type = 1; |
| 543 | tdata->head = NULL; |
| 544 | tdata->symbols = NULL; |
| 545 | tdata->data = NULL; |
| 546 | return TRUE; |
| 547 | } |
| 548 | |
| 549 | /* Return TRUE if the file looks like it's in TekHex format. Just look |
| 550 | for a percent sign and some hex digits. */ |
| 551 | |
| 552 | static const bfd_target * |
| 553 | tekhex_object_p (bfd *abfd) |
| 554 | { |
| 555 | char b[4]; |
| 556 | |
| 557 | tekhex_init (); |
| 558 | |
| 559 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 |
| 560 | || bfd_bread (b, (bfd_size_type) 4, abfd) != 4) |
| 561 | return NULL; |
| 562 | |
| 563 | if (b[0] != '%' || !ISHEX (b[1]) || !ISHEX (b[2]) || !ISHEX (b[3])) |
| 564 | return NULL; |
| 565 | |
| 566 | tekhex_mkobject (abfd); |
| 567 | |
| 568 | if (!pass_over (abfd, first_phase)) |
| 569 | return NULL; |
| 570 | |
| 571 | return abfd->xvec; |
| 572 | } |
| 573 | |
| 574 | static void |
| 575 | move_section_contents (bfd *abfd, |
| 576 | asection *section, |
| 577 | const void * locationp, |
| 578 | file_ptr offset, |
| 579 | bfd_size_type count, |
| 580 | bfd_boolean get) |
| 581 | { |
| 582 | bfd_vma addr; |
| 583 | char *location = (char *) locationp; |
| 584 | bfd_vma prev_number = 1; /* Nothing can have this as a high bit. */ |
| 585 | struct data_struct *d = NULL; |
| 586 | |
| 587 | BFD_ASSERT (offset == 0); |
| 588 | for (addr = section->vma; count != 0; count--, addr++) |
| 589 | { |
| 590 | /* Get high bits of address. */ |
| 591 | bfd_vma chunk_number = addr & ~(bfd_vma) CHUNK_MASK; |
| 592 | bfd_vma low_bits = addr & CHUNK_MASK; |
| 593 | |
| 594 | if (chunk_number != prev_number) |
| 595 | /* Different chunk, so move pointer. */ |
| 596 | d = find_chunk (abfd, chunk_number); |
| 597 | |
| 598 | if (get) |
| 599 | { |
| 600 | if (d->chunk_init[low_bits]) |
| 601 | *location = d->chunk_data[low_bits]; |
| 602 | else |
| 603 | *location = 0; |
| 604 | } |
| 605 | else |
| 606 | { |
| 607 | d->chunk_data[low_bits] = *location; |
| 608 | d->chunk_init[low_bits] = (*location != 0); |
| 609 | } |
| 610 | |
| 611 | location++; |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | static bfd_boolean |
| 616 | tekhex_get_section_contents (bfd *abfd, |
| 617 | asection *section, |
| 618 | void * locationp, |
| 619 | file_ptr offset, |
| 620 | bfd_size_type count) |
| 621 | { |
| 622 | if (section->flags & (SEC_LOAD | SEC_ALLOC)) |
| 623 | { |
| 624 | move_section_contents (abfd, section, locationp, offset, count, TRUE); |
| 625 | return TRUE; |
| 626 | } |
| 627 | |
| 628 | return FALSE; |
| 629 | } |
| 630 | |
| 631 | static bfd_boolean |
| 632 | tekhex_set_arch_mach (bfd *abfd, |
| 633 | enum bfd_architecture arch, |
| 634 | unsigned long machine) |
| 635 | { |
| 636 | return bfd_default_set_arch_mach (abfd, arch, machine); |
| 637 | } |
| 638 | |
| 639 | /* We have to save up all the Tekhexords for a splurge before output. */ |
| 640 | |
| 641 | static bfd_boolean |
| 642 | tekhex_set_section_contents (bfd *abfd, |
| 643 | sec_ptr section, |
| 644 | const void * locationp, |
| 645 | file_ptr offset, |
| 646 | bfd_size_type bytes_to_do) |
| 647 | { |
| 648 | if (! abfd->output_has_begun) |
| 649 | { |
| 650 | /* The first time around, allocate enough sections to hold all the chunks. */ |
| 651 | asection *s = abfd->sections; |
| 652 | bfd_vma vma; |
| 653 | |
| 654 | for (s = abfd->sections; s; s = s->next) |
| 655 | { |
| 656 | if (s->flags & SEC_LOAD) |
| 657 | { |
| 658 | for (vma = s->vma & ~(bfd_vma) CHUNK_MASK; |
| 659 | vma < s->vma + s->size; |
| 660 | vma += CHUNK_MASK) |
| 661 | find_chunk (abfd, vma); |
| 662 | } |
| 663 | } |
| 664 | } |
| 665 | |
| 666 | if (section->flags & (SEC_LOAD | SEC_ALLOC)) |
| 667 | { |
| 668 | move_section_contents (abfd, section, locationp, offset, bytes_to_do, |
| 669 | FALSE); |
| 670 | return TRUE; |
| 671 | } |
| 672 | |
| 673 | return FALSE; |
| 674 | } |
| 675 | |
| 676 | static void |
| 677 | writevalue (char **dst, bfd_vma value) |
| 678 | { |
| 679 | char *p = *dst; |
| 680 | int len; |
| 681 | int shift; |
| 682 | |
| 683 | for (len = 8, shift = 28; shift; shift -= 4, len--) |
| 684 | { |
| 685 | if ((value >> shift) & 0xf) |
| 686 | { |
| 687 | *p++ = len + '0'; |
| 688 | while (len) |
| 689 | { |
| 690 | *p++ = digs[(value >> shift) & 0xf]; |
| 691 | shift -= 4; |
| 692 | len--; |
| 693 | } |
| 694 | *dst = p; |
| 695 | return; |
| 696 | |
| 697 | } |
| 698 | } |
| 699 | *p++ = '1'; |
| 700 | *p++ = '0'; |
| 701 | *dst = p; |
| 702 | } |
| 703 | |
| 704 | static void |
| 705 | writesym (char **dst, const char *sym) |
| 706 | { |
| 707 | char *p = *dst; |
| 708 | int len = (sym ? strlen (sym) : 0); |
| 709 | |
| 710 | if (len >= 16) |
| 711 | { |
| 712 | *p++ = '0'; |
| 713 | len = 16; |
| 714 | } |
| 715 | else |
| 716 | { |
| 717 | if (len == 0) |
| 718 | { |
| 719 | *p++ = '1'; |
| 720 | sym = "$"; |
| 721 | len = 1; |
| 722 | } |
| 723 | else |
| 724 | *p++ = digs[len]; |
| 725 | } |
| 726 | |
| 727 | while (len--) |
| 728 | *p++ = *sym++; |
| 729 | |
| 730 | *dst = p; |
| 731 | } |
| 732 | |
| 733 | static void |
| 734 | out (bfd *abfd, int type, char *start, char *end) |
| 735 | { |
| 736 | int sum = 0; |
| 737 | char *s; |
| 738 | char front[6]; |
| 739 | bfd_size_type wrlen; |
| 740 | |
| 741 | front[0] = '%'; |
| 742 | TOHEX (front + 1, end - start + 5); |
| 743 | front[3] = type; |
| 744 | |
| 745 | for (s = start; s < end; s++) |
| 746 | sum += sum_block[(unsigned char) *s]; |
| 747 | |
| 748 | sum += sum_block[(unsigned char) front[1]]; /* Length. */ |
| 749 | sum += sum_block[(unsigned char) front[2]]; |
| 750 | sum += sum_block[(unsigned char) front[3]]; /* Type. */ |
| 751 | TOHEX (front + 4, sum); |
| 752 | if (bfd_bwrite (front, (bfd_size_type) 6, abfd) != 6) |
| 753 | abort (); |
| 754 | end[0] = '\n'; |
| 755 | wrlen = end - start + 1; |
| 756 | if (bfd_bwrite (start, wrlen, abfd) != wrlen) |
| 757 | abort (); |
| 758 | } |
| 759 | |
| 760 | static bfd_boolean |
| 761 | tekhex_write_object_contents (bfd *abfd) |
| 762 | { |
| 763 | char buffer[100]; |
| 764 | asymbol **p; |
| 765 | asection *s; |
| 766 | struct data_struct *d; |
| 767 | |
| 768 | tekhex_init (); |
| 769 | |
| 770 | /* And the raw data. */ |
| 771 | for (d = abfd->tdata.tekhex_data->data; |
| 772 | d != NULL; |
| 773 | d = d->next) |
| 774 | { |
| 775 | int low; |
| 776 | |
| 777 | const int span = 32; |
| 778 | int addr; |
| 779 | |
| 780 | /* Write it in blocks of 32 bytes. */ |
| 781 | for (addr = 0; addr < CHUNK_MASK + 1; addr += span) |
| 782 | { |
| 783 | int need = 0; |
| 784 | |
| 785 | /* Check to see if necessary. */ |
| 786 | for (low = 0; !need && low < span; low++) |
| 787 | if (d->chunk_init[addr + low]) |
| 788 | need = 1; |
| 789 | |
| 790 | if (need) |
| 791 | { |
| 792 | char *dst = buffer; |
| 793 | |
| 794 | writevalue (&dst, addr + d->vma); |
| 795 | for (low = 0; low < span; low++) |
| 796 | { |
| 797 | TOHEX (dst, d->chunk_data[addr + low]); |
| 798 | dst += 2; |
| 799 | } |
| 800 | out (abfd, '6', buffer, dst); |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | /* Write all the section headers for the sections. */ |
| 806 | for (s = abfd->sections; s != NULL; s = s->next) |
| 807 | { |
| 808 | char *dst = buffer; |
| 809 | |
| 810 | writesym (&dst, s->name); |
| 811 | *dst++ = '1'; |
| 812 | writevalue (&dst, s->vma); |
| 813 | writevalue (&dst, s->vma + s->size); |
| 814 | out (abfd, '3', buffer, dst); |
| 815 | } |
| 816 | |
| 817 | /* And the symbols. */ |
| 818 | if (abfd->outsymbols) |
| 819 | { |
| 820 | for (p = abfd->outsymbols; *p; p++) |
| 821 | { |
| 822 | int section_code = bfd_decode_symclass (*p); |
| 823 | |
| 824 | if (section_code != '?') |
| 825 | { |
| 826 | /* Do not include debug symbols. */ |
| 827 | asymbol *sym = *p; |
| 828 | char *dst = buffer; |
| 829 | |
| 830 | writesym (&dst, sym->section->name); |
| 831 | |
| 832 | switch (section_code) |
| 833 | { |
| 834 | case 'A': |
| 835 | *dst++ = '2'; |
| 836 | break; |
| 837 | case 'a': |
| 838 | *dst++ = '6'; |
| 839 | break; |
| 840 | case 'D': |
| 841 | case 'B': |
| 842 | case 'O': |
| 843 | *dst++ = '4'; |
| 844 | break; |
| 845 | case 'd': |
| 846 | case 'b': |
| 847 | case 'o': |
| 848 | *dst++ = '8'; |
| 849 | break; |
| 850 | case 'T': |
| 851 | *dst++ = '3'; |
| 852 | break; |
| 853 | case 't': |
| 854 | *dst++ = '7'; |
| 855 | break; |
| 856 | case 'C': |
| 857 | case 'U': |
| 858 | bfd_set_error (bfd_error_wrong_format); |
| 859 | return FALSE; |
| 860 | } |
| 861 | |
| 862 | writesym (&dst, sym->name); |
| 863 | writevalue (&dst, sym->value + sym->section->vma); |
| 864 | out (abfd, '3', buffer, dst); |
| 865 | } |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | /* And the terminator. */ |
| 870 | if (bfd_bwrite ("%0781010\n", (bfd_size_type) 9, abfd) != 9) |
| 871 | abort (); |
| 872 | return TRUE; |
| 873 | } |
| 874 | |
| 875 | static int |
| 876 | tekhex_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, |
| 877 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 878 | { |
| 879 | return 0; |
| 880 | } |
| 881 | |
| 882 | static asymbol * |
| 883 | tekhex_make_empty_symbol (bfd *abfd) |
| 884 | { |
| 885 | bfd_size_type amt = sizeof (struct tekhex_symbol_struct); |
| 886 | tekhex_symbol_type *new_symbol = (tekhex_symbol_type *) bfd_zalloc (abfd, |
| 887 | amt); |
| 888 | |
| 889 | if (!new_symbol) |
| 890 | return NULL; |
| 891 | new_symbol->symbol.the_bfd = abfd; |
| 892 | new_symbol->prev = NULL; |
| 893 | return &(new_symbol->symbol); |
| 894 | } |
| 895 | |
| 896 | static void |
| 897 | tekhex_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
| 898 | asymbol *symbol, |
| 899 | symbol_info *ret) |
| 900 | { |
| 901 | bfd_symbol_info (symbol, ret); |
| 902 | } |
| 903 | |
| 904 | static void |
| 905 | tekhex_print_symbol (bfd *abfd, |
| 906 | void * filep, |
| 907 | asymbol *symbol, |
| 908 | bfd_print_symbol_type how) |
| 909 | { |
| 910 | FILE *file = (FILE *) filep; |
| 911 | |
| 912 | switch (how) |
| 913 | { |
| 914 | case bfd_print_symbol_name: |
| 915 | fprintf (file, "%s", symbol->name); |
| 916 | break; |
| 917 | case bfd_print_symbol_more: |
| 918 | break; |
| 919 | |
| 920 | case bfd_print_symbol_all: |
| 921 | { |
| 922 | const char *section_name = symbol->section->name; |
| 923 | |
| 924 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
| 925 | |
| 926 | fprintf (file, " %-5s %s", |
| 927 | section_name, symbol->name); |
| 928 | } |
| 929 | } |
| 930 | } |
| 931 | |
| 932 | #define tekhex_close_and_cleanup _bfd_generic_close_and_cleanup |
| 933 | #define tekhex_bfd_free_cached_info _bfd_generic_bfd_free_cached_info |
| 934 | #define tekhex_new_section_hook _bfd_generic_new_section_hook |
| 935 | #define tekhex_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) |
| 936 | #define tekhex_bfd_is_local_label_name bfd_generic_is_local_label_name |
| 937 | #define tekhex_get_lineno _bfd_nosymbols_get_lineno |
| 938 | #define tekhex_find_nearest_line _bfd_nosymbols_find_nearest_line |
| 939 | #define tekhex_find_inliner_info _bfd_nosymbols_find_inliner_info |
| 940 | #define tekhex_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
| 941 | #define tekhex_read_minisymbols _bfd_generic_read_minisymbols |
| 942 | #define tekhex_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 943 | #define tekhex_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
| 944 | #define tekhex_bfd_relax_section bfd_generic_relax_section |
| 945 | #define tekhex_bfd_gc_sections bfd_generic_gc_sections |
| 946 | #define tekhex_bfd_merge_sections bfd_generic_merge_sections |
| 947 | #define tekhex_bfd_is_group_section bfd_generic_is_group_section |
| 948 | #define tekhex_bfd_discard_group bfd_generic_discard_group |
| 949 | #define tekhex_section_already_linked _bfd_generic_section_already_linked |
| 950 | #define tekhex_bfd_define_common_symbol bfd_generic_define_common_symbol |
| 951 | #define tekhex_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| 952 | #define tekhex_bfd_link_hash_table_free _bfd_generic_link_hash_table_free |
| 953 | #define tekhex_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| 954 | #define tekhex_bfd_link_just_syms _bfd_generic_link_just_syms |
| 955 | #define tekhex_bfd_copy_link_hash_symbol_type \ |
| 956 | _bfd_generic_copy_link_hash_symbol_type |
| 957 | #define tekhex_bfd_final_link _bfd_generic_final_link |
| 958 | #define tekhex_bfd_link_split_section _bfd_generic_link_split_section |
| 959 | #define tekhex_get_section_contents_in_window _bfd_generic_get_section_contents_in_window |
| 960 | |
| 961 | const bfd_target tekhex_vec = |
| 962 | { |
| 963 | "tekhex", /* Name. */ |
| 964 | bfd_target_tekhex_flavour, |
| 965 | BFD_ENDIAN_UNKNOWN, /* Target byte order. */ |
| 966 | BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ |
| 967 | (EXEC_P | /* Object flags. */ |
| 968 | HAS_SYMS | HAS_LINENO | HAS_DEBUG | |
| 969 | HAS_RELOC | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 970 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS |
| 971 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ |
| 972 | 0, /* Leading underscore. */ |
| 973 | ' ', /* AR_pad_char. */ |
| 974 | 16, /* AR_max_namelen. */ |
| 975 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 976 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 977 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ |
| 978 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 979 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 980 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ |
| 981 | |
| 982 | { |
| 983 | _bfd_dummy_target, |
| 984 | tekhex_object_p, /* bfd_check_format. */ |
| 985 | _bfd_dummy_target, |
| 986 | _bfd_dummy_target, |
| 987 | }, |
| 988 | { |
| 989 | bfd_false, |
| 990 | tekhex_mkobject, |
| 991 | _bfd_generic_mkarchive, |
| 992 | bfd_false, |
| 993 | }, |
| 994 | { /* bfd_write_contents. */ |
| 995 | bfd_false, |
| 996 | tekhex_write_object_contents, |
| 997 | _bfd_write_archive_contents, |
| 998 | bfd_false, |
| 999 | }, |
| 1000 | |
| 1001 | BFD_JUMP_TABLE_GENERIC (tekhex), |
| 1002 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 1003 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 1004 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
| 1005 | BFD_JUMP_TABLE_SYMBOLS (tekhex), |
| 1006 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 1007 | BFD_JUMP_TABLE_WRITE (tekhex), |
| 1008 | BFD_JUMP_TABLE_LINK (tekhex), |
| 1009 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 1010 | |
| 1011 | NULL, |
| 1012 | |
| 1013 | NULL |
| 1014 | }; |