Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 1 | /* |
| 2 | * dbll.c |
| 3 | * |
| 4 | * DSP-BIOS Bridge driver support functions for TI OMAP processors. |
| 5 | * |
| 6 | * Copyright (C) 2005-2006 Texas Instruments, Inc. |
| 7 | * |
| 8 | * This package is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 13 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 14 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 15 | */ |
| 16 | |
| 17 | /* ----------------------------------- Host OS */ |
| 18 | #include <dspbridge/host_os.h> |
| 19 | |
| 20 | /* ----------------------------------- DSP/BIOS Bridge */ |
| 21 | #include <dspbridge/std.h> |
| 22 | #include <dspbridge/dbdefs.h> |
| 23 | |
| 24 | /* ----------------------------------- Trace & Debug */ |
| 25 | #include <dspbridge/dbc.h> |
| 26 | #include <dspbridge/gh.h> |
| 27 | |
| 28 | /* ----------------------------------- OS Adaptation Layer */ |
| 29 | |
| 30 | /* Dynamic loader library interface */ |
| 31 | #include <dspbridge/dynamic_loader.h> |
| 32 | #include <dspbridge/getsection.h> |
| 33 | |
| 34 | /* ----------------------------------- This */ |
| 35 | #include <dspbridge/dbll.h> |
| 36 | #include <dspbridge/rmm.h> |
| 37 | |
| 38 | /* Number of buckets for symbol hash table */ |
| 39 | #define MAXBUCKETS 211 |
| 40 | |
| 41 | /* Max buffer length */ |
| 42 | #define MAXEXPR 128 |
| 43 | |
| 44 | #ifndef UINT32_C |
| 45 | #define UINT32_C(zzz) ((uint32_t)zzz) |
| 46 | #endif |
| 47 | #define DOFF_ALIGN(x) (((x) + 3) & ~UINT32_C(3)) |
| 48 | |
| 49 | /* |
| 50 | * ======== struct dbll_tar_obj* ======== |
| 51 | * A target may have one or more libraries of symbols/code/data loaded |
| 52 | * onto it, where a library is simply the symbols/code/data contained |
| 53 | * in a DOFF file. |
| 54 | */ |
| 55 | /* |
| 56 | * ======== dbll_tar_obj ======== |
| 57 | */ |
| 58 | struct dbll_tar_obj { |
| 59 | struct dbll_attrs attrs; |
| 60 | struct dbll_library_obj *head; /* List of all opened libraries */ |
| 61 | }; |
| 62 | |
| 63 | /* |
| 64 | * The following 4 typedefs are "super classes" of the dynamic loader |
| 65 | * library types used in dynamic loader functions (dynamic_loader.h). |
| 66 | */ |
| 67 | /* |
| 68 | * ======== dbll_stream ======== |
| 69 | * Contains dynamic_loader_stream |
| 70 | */ |
| 71 | struct dbll_stream { |
| 72 | struct dynamic_loader_stream dl_stream; |
| 73 | struct dbll_library_obj *lib; |
| 74 | }; |
| 75 | |
| 76 | /* |
| 77 | * ======== ldr_symbol ======== |
| 78 | */ |
| 79 | struct ldr_symbol { |
| 80 | struct dynamic_loader_sym dl_symbol; |
| 81 | struct dbll_library_obj *lib; |
| 82 | }; |
| 83 | |
| 84 | /* |
| 85 | * ======== dbll_alloc ======== |
| 86 | */ |
| 87 | struct dbll_alloc { |
| 88 | struct dynamic_loader_allocate dl_alloc; |
| 89 | struct dbll_library_obj *lib; |
| 90 | }; |
| 91 | |
| 92 | /* |
| 93 | * ======== dbll_init_obj ======== |
| 94 | */ |
| 95 | struct dbll_init_obj { |
| 96 | struct dynamic_loader_initialize dl_init; |
| 97 | struct dbll_library_obj *lib; |
| 98 | }; |
| 99 | |
| 100 | /* |
| 101 | * ======== DBLL_Library ======== |
| 102 | * A library handle is returned by DBLL_Open() and is passed to dbll_load() |
| 103 | * to load symbols/code/data, and to dbll_unload(), to remove the |
| 104 | * symbols/code/data loaded by dbll_load(). |
| 105 | */ |
| 106 | |
| 107 | /* |
| 108 | * ======== dbll_library_obj ======== |
| 109 | */ |
| 110 | struct dbll_library_obj { |
| 111 | struct dbll_library_obj *next; /* Next library in target's list */ |
| 112 | struct dbll_library_obj *prev; /* Previous in the list */ |
| 113 | struct dbll_tar_obj *target_obj; /* target for this library */ |
| 114 | |
| 115 | /* Objects needed by dynamic loader */ |
| 116 | struct dbll_stream stream; |
| 117 | struct ldr_symbol symbol; |
| 118 | struct dbll_alloc allocate; |
| 119 | struct dbll_init_obj init; |
| 120 | void *dload_mod_obj; |
| 121 | |
| 122 | char *file_name; /* COFF file name */ |
| 123 | void *fp; /* Opaque file handle */ |
| 124 | u32 entry; /* Entry point */ |
| 125 | void *desc; /* desc of DOFF file loaded */ |
| 126 | u32 open_ref; /* Number of times opened */ |
| 127 | u32 load_ref; /* Number of times loaded */ |
| 128 | struct gh_t_hash_tab *sym_tab; /* Hash table of symbols */ |
| 129 | u32 ul_pos; |
| 130 | }; |
| 131 | |
| 132 | /* |
| 133 | * ======== dbll_symbol ======== |
| 134 | */ |
| 135 | struct dbll_symbol { |
| 136 | struct dbll_sym_val value; |
| 137 | char *name; |
| 138 | }; |
| 139 | |
| 140 | static void dof_close(struct dbll_library_obj *zl_lib); |
| 141 | static int dof_open(struct dbll_library_obj *zl_lib); |
| 142 | static s32 no_op(struct dynamic_loader_initialize *thisptr, void *bufr, |
| 143 | ldr_addr locn, struct ldr_section_info *info, unsigned bytsiz); |
| 144 | |
| 145 | /* |
| 146 | * Functions called by dynamic loader |
| 147 | * |
| 148 | */ |
| 149 | /* dynamic_loader_stream */ |
| 150 | static int dbll_read_buffer(struct dynamic_loader_stream *this, void *buffer, |
| 151 | unsigned bufsize); |
| 152 | static int dbll_set_file_posn(struct dynamic_loader_stream *this, |
| 153 | unsigned int pos); |
| 154 | /* dynamic_loader_sym */ |
| 155 | static struct dynload_symbol *dbll_find_symbol(struct dynamic_loader_sym *this, |
| 156 | const char *name); |
| 157 | static struct dynload_symbol *dbll_add_to_symbol_table(struct dynamic_loader_sym |
| 158 | *this, const char *name, |
Rene Sapiens | 95870a8 | 2010-07-09 21:23:57 -0500 | [diff] [blame^] | 159 | unsigned module_id); |
Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 160 | static struct dynload_symbol *find_in_symbol_table(struct dynamic_loader_sym |
| 161 | *this, const char *name, |
| 162 | unsigned moduleid); |
| 163 | static void dbll_purge_symbol_table(struct dynamic_loader_sym *this, |
Rene Sapiens | 95870a8 | 2010-07-09 21:23:57 -0500 | [diff] [blame^] | 164 | unsigned module_id); |
Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 165 | static void *allocate(struct dynamic_loader_sym *this, unsigned memsize); |
Rene Sapiens | 95870a8 | 2010-07-09 21:23:57 -0500 | [diff] [blame^] | 166 | static void deallocate(struct dynamic_loader_sym *this, void *mem_ptr); |
Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 167 | static void dbll_err_report(struct dynamic_loader_sym *this, const char *errstr, |
| 168 | va_list args); |
| 169 | /* dynamic_loader_allocate */ |
| 170 | static int dbll_rmm_alloc(struct dynamic_loader_allocate *this, |
| 171 | struct ldr_section_info *info, unsigned align); |
| 172 | static void rmm_dealloc(struct dynamic_loader_allocate *this, |
| 173 | struct ldr_section_info *info); |
| 174 | |
| 175 | /* dynamic_loader_initialize */ |
| 176 | static int connect(struct dynamic_loader_initialize *this); |
| 177 | static int read_mem(struct dynamic_loader_initialize *this, void *buf, |
| 178 | ldr_addr addr, struct ldr_section_info *info, |
| 179 | unsigned nbytes); |
| 180 | static int write_mem(struct dynamic_loader_initialize *this, void *buf, |
| 181 | ldr_addr addr, struct ldr_section_info *info, |
| 182 | unsigned nbytes); |
| 183 | static int fill_mem(struct dynamic_loader_initialize *this, ldr_addr addr, |
| 184 | struct ldr_section_info *info, unsigned nbytes, |
| 185 | unsigned val); |
| 186 | static int execute(struct dynamic_loader_initialize *this, ldr_addr start); |
| 187 | static void release(struct dynamic_loader_initialize *this); |
| 188 | |
| 189 | /* symbol table hash functions */ |
| 190 | static u16 name_hash(void *name, u16 max_bucket); |
| 191 | static bool name_match(void *name, void *sp); |
| 192 | static void sym_delete(void *sp); |
| 193 | |
| 194 | static u32 refs; /* module reference count */ |
| 195 | |
| 196 | /* Symbol Redefinition */ |
| 197 | static int redefined_symbol; |
| 198 | static int gbl_search = 1; |
| 199 | |
| 200 | /* |
| 201 | * ======== dbll_close ======== |
| 202 | */ |
| 203 | void dbll_close(struct dbll_library_obj *zl_lib) |
| 204 | { |
| 205 | struct dbll_tar_obj *zl_target; |
| 206 | |
| 207 | DBC_REQUIRE(refs > 0); |
| 208 | DBC_REQUIRE(zl_lib); |
| 209 | DBC_REQUIRE(zl_lib->open_ref > 0); |
| 210 | zl_target = zl_lib->target_obj; |
| 211 | zl_lib->open_ref--; |
| 212 | if (zl_lib->open_ref == 0) { |
| 213 | /* Remove library from list */ |
| 214 | if (zl_target->head == zl_lib) |
| 215 | zl_target->head = zl_lib->next; |
| 216 | |
| 217 | if (zl_lib->prev) |
| 218 | (zl_lib->prev)->next = zl_lib->next; |
| 219 | |
| 220 | if (zl_lib->next) |
| 221 | (zl_lib->next)->prev = zl_lib->prev; |
| 222 | |
| 223 | /* Free DOF resources */ |
| 224 | dof_close(zl_lib); |
| 225 | kfree(zl_lib->file_name); |
| 226 | |
| 227 | /* remove symbols from symbol table */ |
| 228 | if (zl_lib->sym_tab) |
| 229 | gh_delete(zl_lib->sym_tab); |
| 230 | |
| 231 | /* remove the library object itself */ |
| 232 | kfree(zl_lib); |
| 233 | zl_lib = NULL; |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | /* |
| 238 | * ======== dbll_create ======== |
| 239 | */ |
| 240 | int dbll_create(struct dbll_tar_obj **target_obj, |
| 241 | struct dbll_attrs *pattrs) |
| 242 | { |
| 243 | struct dbll_tar_obj *pzl_target; |
| 244 | int status = 0; |
| 245 | |
| 246 | DBC_REQUIRE(refs > 0); |
| 247 | DBC_REQUIRE(pattrs != NULL); |
| 248 | DBC_REQUIRE(target_obj != NULL); |
| 249 | |
| 250 | /* Allocate DBL target object */ |
| 251 | pzl_target = kzalloc(sizeof(struct dbll_tar_obj), GFP_KERNEL); |
| 252 | if (target_obj != NULL) { |
| 253 | if (pzl_target == NULL) { |
| 254 | *target_obj = NULL; |
| 255 | status = -ENOMEM; |
| 256 | } else { |
| 257 | pzl_target->attrs = *pattrs; |
| 258 | *target_obj = (struct dbll_tar_obj *)pzl_target; |
| 259 | } |
| 260 | DBC_ENSURE((DSP_SUCCEEDED(status) && *target_obj) || |
| 261 | (DSP_FAILED(status) && *target_obj == NULL)); |
| 262 | } |
| 263 | |
| 264 | return status; |
| 265 | } |
| 266 | |
| 267 | /* |
| 268 | * ======== dbll_delete ======== |
| 269 | */ |
| 270 | void dbll_delete(struct dbll_tar_obj *target) |
| 271 | { |
| 272 | struct dbll_tar_obj *zl_target = (struct dbll_tar_obj *)target; |
| 273 | |
| 274 | DBC_REQUIRE(refs > 0); |
| 275 | DBC_REQUIRE(zl_target); |
| 276 | |
| 277 | if (zl_target != NULL) |
| 278 | kfree(zl_target); |
| 279 | |
| 280 | } |
| 281 | |
| 282 | /* |
| 283 | * ======== dbll_exit ======== |
| 284 | * Discontinue usage of DBL module. |
| 285 | */ |
| 286 | void dbll_exit(void) |
| 287 | { |
| 288 | DBC_REQUIRE(refs > 0); |
| 289 | |
| 290 | refs--; |
| 291 | |
| 292 | if (refs == 0) |
| 293 | gh_exit(); |
| 294 | |
| 295 | DBC_ENSURE(refs >= 0); |
| 296 | } |
| 297 | |
| 298 | /* |
| 299 | * ======== dbll_get_addr ======== |
| 300 | * Get address of name in the specified library. |
| 301 | */ |
| 302 | bool dbll_get_addr(struct dbll_library_obj *zl_lib, char *name, |
| 303 | struct dbll_sym_val **ppSym) |
| 304 | { |
| 305 | struct dbll_symbol *sym; |
| 306 | bool status = false; |
| 307 | |
| 308 | DBC_REQUIRE(refs > 0); |
| 309 | DBC_REQUIRE(zl_lib); |
| 310 | DBC_REQUIRE(name != NULL); |
| 311 | DBC_REQUIRE(ppSym != NULL); |
| 312 | DBC_REQUIRE(zl_lib->sym_tab != NULL); |
| 313 | |
| 314 | sym = (struct dbll_symbol *)gh_find(zl_lib->sym_tab, name); |
| 315 | if (sym != NULL) { |
| 316 | *ppSym = &sym->value; |
| 317 | status = true; |
| 318 | } |
| 319 | |
| 320 | dev_dbg(bridge, "%s: lib: %p name: %s paddr: %p, status 0x%x\n", |
| 321 | __func__, zl_lib, name, ppSym, status); |
| 322 | return status; |
| 323 | } |
| 324 | |
| 325 | /* |
| 326 | * ======== dbll_get_attrs ======== |
| 327 | * Retrieve the attributes of the target. |
| 328 | */ |
| 329 | void dbll_get_attrs(struct dbll_tar_obj *target, struct dbll_attrs *pattrs) |
| 330 | { |
| 331 | struct dbll_tar_obj *zl_target = (struct dbll_tar_obj *)target; |
| 332 | |
| 333 | DBC_REQUIRE(refs > 0); |
| 334 | DBC_REQUIRE(zl_target); |
| 335 | DBC_REQUIRE(pattrs != NULL); |
| 336 | |
| 337 | if ((pattrs != NULL) && (zl_target != NULL)) |
| 338 | *pattrs = zl_target->attrs; |
| 339 | |
| 340 | } |
| 341 | |
| 342 | /* |
| 343 | * ======== dbll_get_c_addr ======== |
| 344 | * Get address of a "C" name in the specified library. |
| 345 | */ |
| 346 | bool dbll_get_c_addr(struct dbll_library_obj *zl_lib, char *name, |
| 347 | struct dbll_sym_val **ppSym) |
| 348 | { |
| 349 | struct dbll_symbol *sym; |
| 350 | char cname[MAXEXPR + 1]; |
| 351 | bool status = false; |
| 352 | |
| 353 | DBC_REQUIRE(refs > 0); |
| 354 | DBC_REQUIRE(zl_lib); |
| 355 | DBC_REQUIRE(ppSym != NULL); |
| 356 | DBC_REQUIRE(zl_lib->sym_tab != NULL); |
| 357 | DBC_REQUIRE(name != NULL); |
| 358 | |
| 359 | cname[0] = '_'; |
| 360 | |
| 361 | strncpy(cname + 1, name, sizeof(cname) - 2); |
| 362 | cname[MAXEXPR] = '\0'; /* insure '\0' string termination */ |
| 363 | |
| 364 | /* Check for C name, if not found */ |
| 365 | sym = (struct dbll_symbol *)gh_find(zl_lib->sym_tab, cname); |
| 366 | |
| 367 | if (sym != NULL) { |
| 368 | *ppSym = &sym->value; |
| 369 | status = true; |
| 370 | } |
| 371 | |
| 372 | return status; |
| 373 | } |
| 374 | |
| 375 | /* |
| 376 | * ======== dbll_get_sect ======== |
| 377 | * Get the base address and size (in bytes) of a COFF section. |
| 378 | */ |
| 379 | int dbll_get_sect(struct dbll_library_obj *lib, char *name, u32 *paddr, |
| 380 | u32 *psize) |
| 381 | { |
| 382 | u32 byte_size; |
| 383 | bool opened_doff = false; |
| 384 | const struct ldr_section_info *sect = NULL; |
| 385 | struct dbll_library_obj *zl_lib = (struct dbll_library_obj *)lib; |
| 386 | int status = 0; |
| 387 | |
| 388 | DBC_REQUIRE(refs > 0); |
| 389 | DBC_REQUIRE(name != NULL); |
| 390 | DBC_REQUIRE(paddr != NULL); |
| 391 | DBC_REQUIRE(psize != NULL); |
| 392 | DBC_REQUIRE(zl_lib); |
| 393 | |
| 394 | /* If DOFF file is not open, we open it. */ |
| 395 | if (zl_lib != NULL) { |
| 396 | if (zl_lib->fp == NULL) { |
| 397 | status = dof_open(zl_lib); |
| 398 | if (DSP_SUCCEEDED(status)) |
| 399 | opened_doff = true; |
| 400 | |
| 401 | } else { |
| 402 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, |
| 403 | zl_lib->ul_pos, |
| 404 | SEEK_SET); |
| 405 | } |
| 406 | } else { |
| 407 | status = -EFAULT; |
| 408 | } |
| 409 | if (DSP_SUCCEEDED(status)) { |
| 410 | byte_size = 1; |
| 411 | if (dload_get_section_info(zl_lib->desc, name, §)) { |
| 412 | *paddr = sect->load_addr; |
| 413 | *psize = sect->size * byte_size; |
| 414 | /* Make sure size is even for good swap */ |
| 415 | if (*psize % 2) |
| 416 | (*psize)++; |
| 417 | |
| 418 | /* Align size */ |
| 419 | *psize = DOFF_ALIGN(*psize); |
| 420 | } else { |
| 421 | status = -ENXIO; |
| 422 | } |
| 423 | } |
| 424 | if (opened_doff) { |
| 425 | dof_close(zl_lib); |
| 426 | opened_doff = false; |
| 427 | } |
| 428 | |
| 429 | dev_dbg(bridge, "%s: lib: %p name: %s paddr: %p psize: %p, " |
| 430 | "status 0x%x\n", __func__, lib, name, paddr, psize, status); |
| 431 | |
| 432 | return status; |
| 433 | } |
| 434 | |
| 435 | /* |
| 436 | * ======== dbll_init ======== |
| 437 | */ |
| 438 | bool dbll_init(void) |
| 439 | { |
| 440 | DBC_REQUIRE(refs >= 0); |
| 441 | |
| 442 | if (refs == 0) |
| 443 | gh_init(); |
| 444 | |
| 445 | refs++; |
| 446 | |
| 447 | return true; |
| 448 | } |
| 449 | |
| 450 | /* |
| 451 | * ======== dbll_load ======== |
| 452 | */ |
| 453 | int dbll_load(struct dbll_library_obj *lib, dbll_flags flags, |
| 454 | struct dbll_attrs *attrs, u32 *pEntry) |
| 455 | { |
| 456 | struct dbll_library_obj *zl_lib = (struct dbll_library_obj *)lib; |
| 457 | struct dbll_tar_obj *dbzl; |
| 458 | bool got_symbols = true; |
| 459 | s32 err; |
| 460 | int status = 0; |
| 461 | bool opened_doff = false; |
| 462 | DBC_REQUIRE(refs > 0); |
| 463 | DBC_REQUIRE(zl_lib); |
| 464 | DBC_REQUIRE(pEntry != NULL); |
| 465 | DBC_REQUIRE(attrs != NULL); |
| 466 | |
| 467 | /* |
| 468 | * Load if not already loaded. |
| 469 | */ |
| 470 | if (zl_lib->load_ref == 0 || !(flags & DBLL_DYNAMIC)) { |
| 471 | dbzl = zl_lib->target_obj; |
| 472 | dbzl->attrs = *attrs; |
| 473 | /* Create a hash table for symbols if not already created */ |
| 474 | if (zl_lib->sym_tab == NULL) { |
| 475 | got_symbols = false; |
| 476 | zl_lib->sym_tab = gh_create(MAXBUCKETS, |
| 477 | sizeof(struct dbll_symbol), |
| 478 | name_hash, |
| 479 | name_match, sym_delete); |
| 480 | if (zl_lib->sym_tab == NULL) |
| 481 | status = -ENOMEM; |
| 482 | |
| 483 | } |
| 484 | /* |
| 485 | * Set up objects needed by the dynamic loader |
| 486 | */ |
| 487 | /* Stream */ |
| 488 | zl_lib->stream.dl_stream.read_buffer = dbll_read_buffer; |
| 489 | zl_lib->stream.dl_stream.set_file_posn = dbll_set_file_posn; |
| 490 | zl_lib->stream.lib = zl_lib; |
| 491 | /* Symbol */ |
| 492 | zl_lib->symbol.dl_symbol.find_matching_symbol = |
| 493 | dbll_find_symbol; |
| 494 | if (got_symbols) { |
| 495 | zl_lib->symbol.dl_symbol.add_to_symbol_table = |
| 496 | find_in_symbol_table; |
| 497 | } else { |
| 498 | zl_lib->symbol.dl_symbol.add_to_symbol_table = |
| 499 | dbll_add_to_symbol_table; |
| 500 | } |
| 501 | zl_lib->symbol.dl_symbol.purge_symbol_table = |
| 502 | dbll_purge_symbol_table; |
| 503 | zl_lib->symbol.dl_symbol.dload_allocate = allocate; |
| 504 | zl_lib->symbol.dl_symbol.dload_deallocate = deallocate; |
| 505 | zl_lib->symbol.dl_symbol.error_report = dbll_err_report; |
| 506 | zl_lib->symbol.lib = zl_lib; |
| 507 | /* Allocate */ |
| 508 | zl_lib->allocate.dl_alloc.dload_allocate = dbll_rmm_alloc; |
| 509 | zl_lib->allocate.dl_alloc.dload_deallocate = rmm_dealloc; |
| 510 | zl_lib->allocate.lib = zl_lib; |
| 511 | /* Init */ |
| 512 | zl_lib->init.dl_init.connect = connect; |
| 513 | zl_lib->init.dl_init.readmem = read_mem; |
| 514 | zl_lib->init.dl_init.writemem = write_mem; |
| 515 | zl_lib->init.dl_init.fillmem = fill_mem; |
| 516 | zl_lib->init.dl_init.execute = execute; |
| 517 | zl_lib->init.dl_init.release = release; |
| 518 | zl_lib->init.lib = zl_lib; |
| 519 | /* If COFF file is not open, we open it. */ |
| 520 | if (zl_lib->fp == NULL) { |
| 521 | status = dof_open(zl_lib); |
| 522 | if (DSP_SUCCEEDED(status)) |
| 523 | opened_doff = true; |
| 524 | |
| 525 | } |
| 526 | if (DSP_SUCCEEDED(status)) { |
| 527 | zl_lib->ul_pos = (*(zl_lib->target_obj->attrs.ftell)) |
| 528 | (zl_lib->fp); |
| 529 | /* Reset file cursor */ |
| 530 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, |
| 531 | (long)0, |
| 532 | SEEK_SET); |
| 533 | symbols_reloaded = true; |
| 534 | /* The 5th argument, DLOAD_INITBSS, tells the DLL |
| 535 | * module to zero-init all BSS sections. In general, |
| 536 | * this is not necessary and also increases load time. |
| 537 | * We may want to make this configurable by the user */ |
| 538 | err = dynamic_load_module(&zl_lib->stream.dl_stream, |
| 539 | &zl_lib->symbol.dl_symbol, |
| 540 | &zl_lib->allocate.dl_alloc, |
| 541 | &zl_lib->init.dl_init, |
| 542 | DLOAD_INITBSS, |
| 543 | &zl_lib->dload_mod_obj); |
| 544 | |
| 545 | if (err != 0) { |
| 546 | status = -EILSEQ; |
| 547 | } else if (redefined_symbol) { |
| 548 | zl_lib->load_ref++; |
| 549 | dbll_unload(zl_lib, (struct dbll_attrs *)attrs); |
| 550 | redefined_symbol = false; |
| 551 | status = -EILSEQ; |
| 552 | } else { |
| 553 | *pEntry = zl_lib->entry; |
| 554 | } |
| 555 | } |
| 556 | } |
| 557 | if (DSP_SUCCEEDED(status)) |
| 558 | zl_lib->load_ref++; |
| 559 | |
| 560 | /* Clean up DOFF resources */ |
| 561 | if (opened_doff) |
| 562 | dof_close(zl_lib); |
| 563 | |
| 564 | DBC_ENSURE(DSP_FAILED(status) || zl_lib->load_ref > 0); |
| 565 | |
| 566 | dev_dbg(bridge, "%s: lib: %p flags: 0x%x pEntry: %p, status 0x%x\n", |
| 567 | __func__, lib, flags, pEntry, status); |
| 568 | |
| 569 | return status; |
| 570 | } |
| 571 | |
| 572 | /* |
| 573 | * ======== dbll_load_sect ======== |
| 574 | * Not supported for COFF. |
| 575 | */ |
| 576 | int dbll_load_sect(struct dbll_library_obj *zl_lib, char *sectName, |
| 577 | struct dbll_attrs *attrs) |
| 578 | { |
| 579 | DBC_REQUIRE(zl_lib); |
| 580 | |
| 581 | return -ENOSYS; |
| 582 | } |
| 583 | |
| 584 | /* |
| 585 | * ======== dbll_open ======== |
| 586 | */ |
| 587 | int dbll_open(struct dbll_tar_obj *target, char *file, dbll_flags flags, |
| 588 | struct dbll_library_obj **pLib) |
| 589 | { |
| 590 | struct dbll_tar_obj *zl_target = (struct dbll_tar_obj *)target; |
| 591 | struct dbll_library_obj *zl_lib = NULL; |
| 592 | s32 err; |
| 593 | int status = 0; |
| 594 | |
| 595 | DBC_REQUIRE(refs > 0); |
| 596 | DBC_REQUIRE(zl_target); |
| 597 | DBC_REQUIRE(zl_target->attrs.fopen != NULL); |
| 598 | DBC_REQUIRE(file != NULL); |
| 599 | DBC_REQUIRE(pLib != NULL); |
| 600 | |
| 601 | zl_lib = zl_target->head; |
| 602 | while (zl_lib != NULL) { |
| 603 | if (strcmp(zl_lib->file_name, file) == 0) { |
| 604 | /* Library is already opened */ |
| 605 | zl_lib->open_ref++; |
| 606 | break; |
| 607 | } |
| 608 | zl_lib = zl_lib->next; |
| 609 | } |
| 610 | if (zl_lib == NULL) { |
| 611 | /* Allocate DBL library object */ |
| 612 | zl_lib = kzalloc(sizeof(struct dbll_library_obj), GFP_KERNEL); |
| 613 | if (zl_lib == NULL) { |
| 614 | status = -ENOMEM; |
| 615 | } else { |
| 616 | zl_lib->ul_pos = 0; |
| 617 | /* Increment ref count to allow close on failure |
| 618 | * later on */ |
| 619 | zl_lib->open_ref++; |
| 620 | zl_lib->target_obj = zl_target; |
| 621 | /* Keep a copy of the file name */ |
| 622 | zl_lib->file_name = kzalloc(strlen(file) + 1, |
| 623 | GFP_KERNEL); |
| 624 | if (zl_lib->file_name == NULL) { |
| 625 | status = -ENOMEM; |
| 626 | } else { |
| 627 | strncpy(zl_lib->file_name, file, |
| 628 | strlen(file) + 1); |
| 629 | } |
| 630 | zl_lib->sym_tab = NULL; |
| 631 | } |
| 632 | } |
| 633 | /* |
| 634 | * Set up objects needed by the dynamic loader |
| 635 | */ |
| 636 | if (DSP_FAILED(status)) |
| 637 | goto func_cont; |
| 638 | |
| 639 | /* Stream */ |
| 640 | zl_lib->stream.dl_stream.read_buffer = dbll_read_buffer; |
| 641 | zl_lib->stream.dl_stream.set_file_posn = dbll_set_file_posn; |
| 642 | zl_lib->stream.lib = zl_lib; |
| 643 | /* Symbol */ |
| 644 | zl_lib->symbol.dl_symbol.add_to_symbol_table = dbll_add_to_symbol_table; |
| 645 | zl_lib->symbol.dl_symbol.find_matching_symbol = dbll_find_symbol; |
| 646 | zl_lib->symbol.dl_symbol.purge_symbol_table = dbll_purge_symbol_table; |
| 647 | zl_lib->symbol.dl_symbol.dload_allocate = allocate; |
| 648 | zl_lib->symbol.dl_symbol.dload_deallocate = deallocate; |
| 649 | zl_lib->symbol.dl_symbol.error_report = dbll_err_report; |
| 650 | zl_lib->symbol.lib = zl_lib; |
| 651 | /* Allocate */ |
| 652 | zl_lib->allocate.dl_alloc.dload_allocate = dbll_rmm_alloc; |
| 653 | zl_lib->allocate.dl_alloc.dload_deallocate = rmm_dealloc; |
| 654 | zl_lib->allocate.lib = zl_lib; |
| 655 | /* Init */ |
| 656 | zl_lib->init.dl_init.connect = connect; |
| 657 | zl_lib->init.dl_init.readmem = read_mem; |
| 658 | zl_lib->init.dl_init.writemem = write_mem; |
| 659 | zl_lib->init.dl_init.fillmem = fill_mem; |
| 660 | zl_lib->init.dl_init.execute = execute; |
| 661 | zl_lib->init.dl_init.release = release; |
| 662 | zl_lib->init.lib = zl_lib; |
| 663 | if (DSP_SUCCEEDED(status) && zl_lib->fp == NULL) |
| 664 | status = dof_open(zl_lib); |
| 665 | |
| 666 | zl_lib->ul_pos = (*(zl_lib->target_obj->attrs.ftell)) (zl_lib->fp); |
| 667 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, (long)0, SEEK_SET); |
| 668 | /* Create a hash table for symbols if flag is set */ |
| 669 | if (zl_lib->sym_tab != NULL || !(flags & DBLL_SYMB)) |
| 670 | goto func_cont; |
| 671 | |
| 672 | zl_lib->sym_tab = |
| 673 | gh_create(MAXBUCKETS, sizeof(struct dbll_symbol), name_hash, |
| 674 | name_match, sym_delete); |
| 675 | if (zl_lib->sym_tab == NULL) { |
| 676 | status = -ENOMEM; |
| 677 | } else { |
| 678 | /* Do a fake load to get symbols - set write func to no_op */ |
| 679 | zl_lib->init.dl_init.writemem = no_op; |
| 680 | err = dynamic_open_module(&zl_lib->stream.dl_stream, |
| 681 | &zl_lib->symbol.dl_symbol, |
| 682 | &zl_lib->allocate.dl_alloc, |
| 683 | &zl_lib->init.dl_init, 0, |
| 684 | &zl_lib->dload_mod_obj); |
| 685 | if (err != 0) { |
| 686 | status = -EILSEQ; |
| 687 | } else { |
| 688 | /* Now that we have the symbol table, we can unload */ |
| 689 | err = dynamic_unload_module(zl_lib->dload_mod_obj, |
| 690 | &zl_lib->symbol.dl_symbol, |
| 691 | &zl_lib->allocate.dl_alloc, |
| 692 | &zl_lib->init.dl_init); |
| 693 | if (err != 0) |
| 694 | status = -EILSEQ; |
| 695 | |
| 696 | zl_lib->dload_mod_obj = NULL; |
| 697 | } |
| 698 | } |
| 699 | func_cont: |
| 700 | if (DSP_SUCCEEDED(status)) { |
| 701 | if (zl_lib->open_ref == 1) { |
| 702 | /* First time opened - insert in list */ |
| 703 | if (zl_target->head) |
| 704 | (zl_target->head)->prev = zl_lib; |
| 705 | |
| 706 | zl_lib->prev = NULL; |
| 707 | zl_lib->next = zl_target->head; |
| 708 | zl_target->head = zl_lib; |
| 709 | } |
| 710 | *pLib = (struct dbll_library_obj *)zl_lib; |
| 711 | } else { |
| 712 | *pLib = NULL; |
| 713 | if (zl_lib != NULL) |
| 714 | dbll_close((struct dbll_library_obj *)zl_lib); |
| 715 | |
| 716 | } |
| 717 | DBC_ENSURE((DSP_SUCCEEDED(status) && (zl_lib->open_ref > 0) && *pLib) |
| 718 | || (DSP_FAILED(status) && *pLib == NULL)); |
| 719 | |
| 720 | dev_dbg(bridge, "%s: target: %p file: %s pLib: %p, status 0x%x\n", |
| 721 | __func__, target, file, pLib, status); |
| 722 | |
| 723 | return status; |
| 724 | } |
| 725 | |
| 726 | /* |
| 727 | * ======== dbll_read_sect ======== |
| 728 | * Get the content of a COFF section. |
| 729 | */ |
| 730 | int dbll_read_sect(struct dbll_library_obj *lib, char *name, |
| 731 | char *pContent, u32 size) |
| 732 | { |
| 733 | struct dbll_library_obj *zl_lib = (struct dbll_library_obj *)lib; |
| 734 | bool opened_doff = false; |
| 735 | u32 byte_size; /* size of bytes */ |
| 736 | u32 ul_sect_size; /* size of section */ |
| 737 | const struct ldr_section_info *sect = NULL; |
| 738 | int status = 0; |
| 739 | |
| 740 | DBC_REQUIRE(refs > 0); |
| 741 | DBC_REQUIRE(zl_lib); |
| 742 | DBC_REQUIRE(name != NULL); |
| 743 | DBC_REQUIRE(pContent != NULL); |
| 744 | DBC_REQUIRE(size != 0); |
| 745 | |
| 746 | /* If DOFF file is not open, we open it. */ |
| 747 | if (zl_lib != NULL) { |
| 748 | if (zl_lib->fp == NULL) { |
| 749 | status = dof_open(zl_lib); |
| 750 | if (DSP_SUCCEEDED(status)) |
| 751 | opened_doff = true; |
| 752 | |
| 753 | } else { |
| 754 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, |
| 755 | zl_lib->ul_pos, |
| 756 | SEEK_SET); |
| 757 | } |
| 758 | } else { |
| 759 | status = -EFAULT; |
| 760 | } |
| 761 | if (DSP_FAILED(status)) |
| 762 | goto func_cont; |
| 763 | |
| 764 | byte_size = 1; |
| 765 | if (!dload_get_section_info(zl_lib->desc, name, §)) { |
| 766 | status = -ENXIO; |
| 767 | goto func_cont; |
| 768 | } |
| 769 | /* |
| 770 | * Ensure the supplied buffer size is sufficient to store |
| 771 | * the section content to be read. |
| 772 | */ |
| 773 | ul_sect_size = sect->size * byte_size; |
| 774 | /* Make sure size is even for good swap */ |
| 775 | if (ul_sect_size % 2) |
| 776 | ul_sect_size++; |
| 777 | |
| 778 | /* Align size */ |
| 779 | ul_sect_size = DOFF_ALIGN(ul_sect_size); |
| 780 | if (ul_sect_size > size) { |
| 781 | status = -EPERM; |
| 782 | } else { |
| 783 | if (!dload_get_section(zl_lib->desc, sect, pContent)) |
| 784 | status = -EBADF; |
| 785 | |
| 786 | } |
| 787 | func_cont: |
| 788 | if (opened_doff) { |
| 789 | dof_close(zl_lib); |
| 790 | opened_doff = false; |
| 791 | } |
| 792 | |
| 793 | dev_dbg(bridge, "%s: lib: %p name: %s pContent: %p size: 0x%x, " |
| 794 | "status 0x%x\n", __func__, lib, name, pContent, size, status); |
| 795 | return status; |
| 796 | } |
| 797 | |
| 798 | /* |
| 799 | * ======== dbll_set_attrs ======== |
| 800 | * Set the attributes of the target. |
| 801 | */ |
| 802 | void dbll_set_attrs(struct dbll_tar_obj *target, struct dbll_attrs *pattrs) |
| 803 | { |
| 804 | struct dbll_tar_obj *zl_target = (struct dbll_tar_obj *)target; |
| 805 | DBC_REQUIRE(refs > 0); |
| 806 | DBC_REQUIRE(zl_target); |
| 807 | DBC_REQUIRE(pattrs != NULL); |
| 808 | |
| 809 | if ((pattrs != NULL) && (zl_target != NULL)) |
| 810 | zl_target->attrs = *pattrs; |
| 811 | |
| 812 | } |
| 813 | |
| 814 | /* |
| 815 | * ======== dbll_unload ======== |
| 816 | */ |
| 817 | void dbll_unload(struct dbll_library_obj *lib, struct dbll_attrs *attrs) |
| 818 | { |
| 819 | struct dbll_library_obj *zl_lib = (struct dbll_library_obj *)lib; |
| 820 | s32 err = 0; |
| 821 | |
| 822 | DBC_REQUIRE(refs > 0); |
| 823 | DBC_REQUIRE(zl_lib); |
| 824 | DBC_REQUIRE(zl_lib->load_ref > 0); |
| 825 | dev_dbg(bridge, "%s: lib: %p\n", __func__, lib); |
| 826 | zl_lib->load_ref--; |
| 827 | /* Unload only if reference count is 0 */ |
| 828 | if (zl_lib->load_ref != 0) |
| 829 | goto func_end; |
| 830 | |
| 831 | zl_lib->target_obj->attrs = *attrs; |
| 832 | if (zl_lib->dload_mod_obj) { |
| 833 | err = dynamic_unload_module(zl_lib->dload_mod_obj, |
| 834 | &zl_lib->symbol.dl_symbol, |
| 835 | &zl_lib->allocate.dl_alloc, |
| 836 | &zl_lib->init.dl_init); |
| 837 | if (err != 0) |
| 838 | dev_dbg(bridge, "%s: failed: 0x%x\n", __func__, err); |
| 839 | } |
| 840 | /* remove symbols from symbol table */ |
| 841 | if (zl_lib->sym_tab != NULL) { |
| 842 | gh_delete(zl_lib->sym_tab); |
| 843 | zl_lib->sym_tab = NULL; |
| 844 | } |
| 845 | /* delete DOFF desc since it holds *lots* of host OS |
| 846 | * resources */ |
| 847 | dof_close(zl_lib); |
| 848 | func_end: |
| 849 | DBC_ENSURE(zl_lib->load_ref >= 0); |
| 850 | } |
| 851 | |
| 852 | /* |
| 853 | * ======== dbll_unload_sect ======== |
| 854 | * Not supported for COFF. |
| 855 | */ |
| 856 | int dbll_unload_sect(struct dbll_library_obj *lib, char *sectName, |
| 857 | struct dbll_attrs *attrs) |
| 858 | { |
| 859 | DBC_REQUIRE(refs > 0); |
| 860 | DBC_REQUIRE(sectName != NULL); |
| 861 | |
| 862 | return -ENOSYS; |
| 863 | } |
| 864 | |
| 865 | /* |
| 866 | * ======== dof_close ======== |
| 867 | */ |
| 868 | static void dof_close(struct dbll_library_obj *zl_lib) |
| 869 | { |
| 870 | if (zl_lib->desc) { |
| 871 | dload_module_close(zl_lib->desc); |
| 872 | zl_lib->desc = NULL; |
| 873 | } |
| 874 | /* close file */ |
| 875 | if (zl_lib->fp) { |
| 876 | (zl_lib->target_obj->attrs.fclose) (zl_lib->fp); |
| 877 | zl_lib->fp = NULL; |
| 878 | } |
| 879 | } |
| 880 | |
| 881 | /* |
| 882 | * ======== dof_open ======== |
| 883 | */ |
| 884 | static int dof_open(struct dbll_library_obj *zl_lib) |
| 885 | { |
| 886 | void *open = *(zl_lib->target_obj->attrs.fopen); |
| 887 | int status = 0; |
| 888 | |
| 889 | /* First open the file for the dynamic loader, then open COF */ |
| 890 | zl_lib->fp = |
| 891 | (void *)((dbll_f_open_fxn) (open)) (zl_lib->file_name, "rb"); |
| 892 | |
| 893 | /* Open DOFF module */ |
| 894 | if (zl_lib->fp && zl_lib->desc == NULL) { |
| 895 | (*(zl_lib->target_obj->attrs.fseek)) (zl_lib->fp, (long)0, |
| 896 | SEEK_SET); |
| 897 | zl_lib->desc = |
| 898 | dload_module_open(&zl_lib->stream.dl_stream, |
| 899 | &zl_lib->symbol.dl_symbol); |
| 900 | if (zl_lib->desc == NULL) { |
| 901 | (zl_lib->target_obj->attrs.fclose) (zl_lib->fp); |
| 902 | zl_lib->fp = NULL; |
| 903 | status = -EBADF; |
| 904 | } |
| 905 | } else { |
| 906 | status = -EBADF; |
| 907 | } |
| 908 | |
| 909 | return status; |
| 910 | } |
| 911 | |
| 912 | /* |
| 913 | * ======== name_hash ======== |
| 914 | */ |
| 915 | static u16 name_hash(void *key, u16 max_bucket) |
| 916 | { |
| 917 | u16 ret; |
| 918 | u16 hash; |
| 919 | char *name = (char *)key; |
| 920 | |
| 921 | DBC_REQUIRE(name != NULL); |
| 922 | |
| 923 | hash = 0; |
| 924 | |
| 925 | while (*name) { |
| 926 | hash <<= 1; |
| 927 | hash ^= *name++; |
| 928 | } |
| 929 | |
| 930 | ret = hash % max_bucket; |
| 931 | |
| 932 | return ret; |
| 933 | } |
| 934 | |
| 935 | /* |
| 936 | * ======== name_match ======== |
| 937 | */ |
| 938 | static bool name_match(void *key, void *value) |
| 939 | { |
| 940 | DBC_REQUIRE(key != NULL); |
| 941 | DBC_REQUIRE(value != NULL); |
| 942 | |
| 943 | if ((key != NULL) && (value != NULL)) { |
| 944 | if (strcmp((char *)key, ((struct dbll_symbol *)value)->name) == |
| 945 | 0) |
| 946 | return true; |
| 947 | } |
| 948 | return false; |
| 949 | } |
| 950 | |
| 951 | /* |
| 952 | * ======== no_op ======== |
| 953 | */ |
| 954 | static int no_op(struct dynamic_loader_initialize *thisptr, void *bufr, |
| 955 | ldr_addr locn, struct ldr_section_info *info, unsigned bytsize) |
| 956 | { |
| 957 | return 1; |
| 958 | } |
| 959 | |
| 960 | /* |
| 961 | * ======== sym_delete ======== |
| 962 | */ |
| 963 | static void sym_delete(void *value) |
| 964 | { |
| 965 | struct dbll_symbol *sp = (struct dbll_symbol *)value; |
| 966 | |
| 967 | kfree(sp->name); |
| 968 | } |
| 969 | |
| 970 | /* |
| 971 | * Dynamic Loader Functions |
| 972 | */ |
| 973 | |
| 974 | /* dynamic_loader_stream */ |
| 975 | /* |
| 976 | * ======== dbll_read_buffer ======== |
| 977 | */ |
| 978 | static int dbll_read_buffer(struct dynamic_loader_stream *this, void *buffer, |
| 979 | unsigned bufsize) |
| 980 | { |
| 981 | struct dbll_stream *pstream = (struct dbll_stream *)this; |
| 982 | struct dbll_library_obj *lib; |
| 983 | int bytes_read = 0; |
| 984 | |
| 985 | DBC_REQUIRE(this != NULL); |
| 986 | lib = pstream->lib; |
| 987 | DBC_REQUIRE(lib); |
| 988 | |
| 989 | if (lib != NULL) { |
| 990 | bytes_read = |
| 991 | (*(lib->target_obj->attrs.fread)) (buffer, 1, bufsize, |
| 992 | lib->fp); |
| 993 | } |
| 994 | return bytes_read; |
| 995 | } |
| 996 | |
| 997 | /* |
| 998 | * ======== dbll_set_file_posn ======== |
| 999 | */ |
| 1000 | static int dbll_set_file_posn(struct dynamic_loader_stream *this, |
| 1001 | unsigned int pos) |
| 1002 | { |
| 1003 | struct dbll_stream *pstream = (struct dbll_stream *)this; |
| 1004 | struct dbll_library_obj *lib; |
| 1005 | int status = 0; /* Success */ |
| 1006 | |
| 1007 | DBC_REQUIRE(this != NULL); |
| 1008 | lib = pstream->lib; |
| 1009 | DBC_REQUIRE(lib); |
| 1010 | |
| 1011 | if (lib != NULL) { |
| 1012 | status = (*(lib->target_obj->attrs.fseek)) (lib->fp, (long)pos, |
| 1013 | SEEK_SET); |
| 1014 | } |
| 1015 | |
| 1016 | return status; |
| 1017 | } |
| 1018 | |
| 1019 | /* dynamic_loader_sym */ |
| 1020 | |
| 1021 | /* |
| 1022 | * ======== dbll_find_symbol ======== |
| 1023 | */ |
| 1024 | static struct dynload_symbol *dbll_find_symbol(struct dynamic_loader_sym *this, |
| 1025 | const char *name) |
| 1026 | { |
| 1027 | struct dynload_symbol *ret_sym; |
| 1028 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; |
| 1029 | struct dbll_library_obj *lib; |
| 1030 | struct dbll_sym_val *dbll_sym = NULL; |
| 1031 | bool status = false; /* Symbol not found yet */ |
| 1032 | |
| 1033 | DBC_REQUIRE(this != NULL); |
| 1034 | lib = ldr_sym->lib; |
| 1035 | DBC_REQUIRE(lib); |
| 1036 | |
| 1037 | if (lib != NULL) { |
| 1038 | if (lib->target_obj->attrs.sym_lookup) { |
| 1039 | /* Check current lib + base lib + dep lib + |
| 1040 | * persistent lib */ |
| 1041 | status = (*(lib->target_obj->attrs.sym_lookup)) |
| 1042 | (lib->target_obj->attrs.sym_handle, |
| 1043 | lib->target_obj->attrs.sym_arg, |
| 1044 | lib->target_obj->attrs.rmm_handle, name, |
| 1045 | &dbll_sym); |
| 1046 | } else { |
| 1047 | /* Just check current lib for symbol */ |
| 1048 | status = dbll_get_addr((struct dbll_library_obj *)lib, |
| 1049 | (char *)name, &dbll_sym); |
| 1050 | if (!status) { |
| 1051 | status = |
| 1052 | dbll_get_c_addr((struct dbll_library_obj *) |
| 1053 | lib, (char *)name, |
| 1054 | &dbll_sym); |
| 1055 | } |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | if (!status && gbl_search) |
| 1060 | dev_dbg(bridge, "%s: Symbol not found: %s\n", __func__, name); |
| 1061 | |
| 1062 | DBC_ASSERT((status && (dbll_sym != NULL)) |
| 1063 | || (!status && (dbll_sym == NULL))); |
| 1064 | |
| 1065 | ret_sym = (struct dynload_symbol *)dbll_sym; |
| 1066 | return ret_sym; |
| 1067 | } |
| 1068 | |
| 1069 | /* |
| 1070 | * ======== find_in_symbol_table ======== |
| 1071 | */ |
| 1072 | static struct dynload_symbol *find_in_symbol_table(struct dynamic_loader_sym |
| 1073 | *this, const char *name, |
| 1074 | unsigned moduleid) |
| 1075 | { |
| 1076 | struct dynload_symbol *ret_sym; |
| 1077 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; |
| 1078 | struct dbll_library_obj *lib; |
| 1079 | struct dbll_symbol *sym; |
| 1080 | |
| 1081 | DBC_REQUIRE(this != NULL); |
| 1082 | lib = ldr_sym->lib; |
| 1083 | DBC_REQUIRE(lib); |
| 1084 | DBC_REQUIRE(lib->sym_tab != NULL); |
| 1085 | |
| 1086 | sym = (struct dbll_symbol *)gh_find(lib->sym_tab, (char *)name); |
| 1087 | |
| 1088 | ret_sym = (struct dynload_symbol *)&sym->value; |
| 1089 | return ret_sym; |
| 1090 | } |
| 1091 | |
| 1092 | /* |
| 1093 | * ======== dbll_add_to_symbol_table ======== |
| 1094 | */ |
| 1095 | static struct dynload_symbol *dbll_add_to_symbol_table(struct dynamic_loader_sym |
| 1096 | *this, const char *name, |
Rene Sapiens | 95870a8 | 2010-07-09 21:23:57 -0500 | [diff] [blame^] | 1097 | unsigned module_id) |
Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 1098 | { |
| 1099 | struct dbll_symbol *sym_ptr = NULL; |
| 1100 | struct dbll_symbol symbol; |
| 1101 | struct dynload_symbol *dbll_sym = NULL; |
| 1102 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; |
| 1103 | struct dbll_library_obj *lib; |
| 1104 | struct dynload_symbol *ret; |
| 1105 | |
| 1106 | DBC_REQUIRE(this != NULL); |
| 1107 | DBC_REQUIRE(name); |
| 1108 | lib = ldr_sym->lib; |
| 1109 | DBC_REQUIRE(lib); |
| 1110 | |
| 1111 | /* Check to see if symbol is already defined in symbol table */ |
| 1112 | if (!(lib->target_obj->attrs.base_image)) { |
| 1113 | gbl_search = false; |
| 1114 | dbll_sym = dbll_find_symbol(this, name); |
| 1115 | gbl_search = true; |
| 1116 | if (dbll_sym) { |
| 1117 | redefined_symbol = true; |
| 1118 | dev_dbg(bridge, "%s already defined in symbol table\n", |
| 1119 | name); |
| 1120 | return NULL; |
| 1121 | } |
| 1122 | } |
| 1123 | /* Allocate string to copy symbol name */ |
| 1124 | symbol.name = kzalloc(strlen((char *const)name) + 1, GFP_KERNEL); |
| 1125 | if (symbol.name == NULL) |
| 1126 | return NULL; |
| 1127 | |
| 1128 | if (symbol.name != NULL) { |
| 1129 | /* Just copy name (value will be filled in by dynamic loader) */ |
| 1130 | strncpy(symbol.name, (char *const)name, |
| 1131 | strlen((char *const)name) + 1); |
| 1132 | |
| 1133 | /* Add symbol to symbol table */ |
| 1134 | sym_ptr = |
| 1135 | (struct dbll_symbol *)gh_insert(lib->sym_tab, (void *)name, |
| 1136 | (void *)&symbol); |
| 1137 | if (sym_ptr == NULL) |
| 1138 | kfree(symbol.name); |
| 1139 | |
| 1140 | } |
| 1141 | if (sym_ptr != NULL) |
| 1142 | ret = (struct dynload_symbol *)&sym_ptr->value; |
| 1143 | else |
| 1144 | ret = NULL; |
| 1145 | |
| 1146 | return ret; |
| 1147 | } |
| 1148 | |
| 1149 | /* |
| 1150 | * ======== dbll_purge_symbol_table ======== |
| 1151 | */ |
| 1152 | static void dbll_purge_symbol_table(struct dynamic_loader_sym *this, |
Rene Sapiens | 95870a8 | 2010-07-09 21:23:57 -0500 | [diff] [blame^] | 1153 | unsigned module_id) |
Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 1154 | { |
| 1155 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; |
| 1156 | struct dbll_library_obj *lib; |
| 1157 | |
| 1158 | DBC_REQUIRE(this != NULL); |
| 1159 | lib = ldr_sym->lib; |
| 1160 | DBC_REQUIRE(lib); |
| 1161 | |
| 1162 | /* May not need to do anything */ |
| 1163 | } |
| 1164 | |
| 1165 | /* |
| 1166 | * ======== allocate ======== |
| 1167 | */ |
| 1168 | static void *allocate(struct dynamic_loader_sym *this, unsigned memsize) |
| 1169 | { |
| 1170 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; |
| 1171 | struct dbll_library_obj *lib; |
| 1172 | void *buf; |
| 1173 | |
| 1174 | DBC_REQUIRE(this != NULL); |
| 1175 | lib = ldr_sym->lib; |
| 1176 | DBC_REQUIRE(lib); |
| 1177 | |
| 1178 | buf = kzalloc(memsize, GFP_KERNEL); |
| 1179 | |
| 1180 | return buf; |
| 1181 | } |
| 1182 | |
| 1183 | /* |
| 1184 | * ======== deallocate ======== |
| 1185 | */ |
Rene Sapiens | 95870a8 | 2010-07-09 21:23:57 -0500 | [diff] [blame^] | 1186 | static void deallocate(struct dynamic_loader_sym *this, void *mem_ptr) |
Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 1187 | { |
| 1188 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; |
| 1189 | struct dbll_library_obj *lib; |
| 1190 | |
| 1191 | DBC_REQUIRE(this != NULL); |
| 1192 | lib = ldr_sym->lib; |
| 1193 | DBC_REQUIRE(lib); |
| 1194 | |
Rene Sapiens | 95870a8 | 2010-07-09 21:23:57 -0500 | [diff] [blame^] | 1195 | kfree(mem_ptr); |
Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | /* |
| 1199 | * ======== dbll_err_report ======== |
| 1200 | */ |
| 1201 | static void dbll_err_report(struct dynamic_loader_sym *this, const char *errstr, |
| 1202 | va_list args) |
| 1203 | { |
| 1204 | struct ldr_symbol *ldr_sym = (struct ldr_symbol *)this; |
| 1205 | struct dbll_library_obj *lib; |
| 1206 | char temp_buf[MAXEXPR]; |
| 1207 | |
| 1208 | DBC_REQUIRE(this != NULL); |
| 1209 | lib = ldr_sym->lib; |
| 1210 | DBC_REQUIRE(lib); |
| 1211 | vsnprintf((char *)temp_buf, MAXEXPR, (char *)errstr, args); |
| 1212 | dev_dbg(bridge, "%s\n", temp_buf); |
| 1213 | } |
| 1214 | |
| 1215 | /* dynamic_loader_allocate */ |
| 1216 | |
| 1217 | /* |
| 1218 | * ======== dbll_rmm_alloc ======== |
| 1219 | */ |
| 1220 | static int dbll_rmm_alloc(struct dynamic_loader_allocate *this, |
| 1221 | struct ldr_section_info *info, unsigned align) |
| 1222 | { |
| 1223 | struct dbll_alloc *dbll_alloc_obj = (struct dbll_alloc *)this; |
| 1224 | struct dbll_library_obj *lib; |
| 1225 | int status = 0; |
| 1226 | u32 mem_sect_type; |
| 1227 | struct rmm_addr rmm_addr_obj; |
| 1228 | s32 ret = TRUE; |
| 1229 | unsigned stype = DLOAD_SECTION_TYPE(info->type); |
| 1230 | char *token = NULL; |
| 1231 | char *sz_sec_last_token = NULL; |
| 1232 | char *sz_last_token = NULL; |
| 1233 | char *sz_sect_name = NULL; |
| 1234 | char *psz_cur; |
| 1235 | s32 token_len = 0; |
| 1236 | s32 seg_id = -1; |
| 1237 | s32 req = -1; |
| 1238 | s32 count = 0; |
| 1239 | u32 alloc_size = 0; |
| 1240 | u32 run_addr_flag = 0; |
| 1241 | |
| 1242 | DBC_REQUIRE(this != NULL); |
| 1243 | lib = dbll_alloc_obj->lib; |
| 1244 | DBC_REQUIRE(lib); |
| 1245 | |
| 1246 | mem_sect_type = |
| 1247 | (stype == DLOAD_TEXT) ? DBLL_CODE : (stype == |
| 1248 | DLOAD_BSS) ? DBLL_BSS : |
| 1249 | DBLL_DATA; |
| 1250 | |
| 1251 | /* Attempt to extract the segment ID and requirement information from |
| 1252 | the name of the section */ |
| 1253 | DBC_REQUIRE(info->name); |
| 1254 | token_len = strlen((char *)(info->name)) + 1; |
| 1255 | |
| 1256 | sz_sect_name = kzalloc(token_len, GFP_KERNEL); |
| 1257 | sz_last_token = kzalloc(token_len, GFP_KERNEL); |
| 1258 | sz_sec_last_token = kzalloc(token_len, GFP_KERNEL); |
| 1259 | |
| 1260 | if (sz_sect_name == NULL || sz_sec_last_token == NULL || |
| 1261 | sz_last_token == NULL) { |
| 1262 | status = -ENOMEM; |
| 1263 | goto func_cont; |
| 1264 | } |
| 1265 | strncpy(sz_sect_name, (char *)(info->name), token_len); |
| 1266 | psz_cur = sz_sect_name; |
| 1267 | while ((token = strsep(&psz_cur, ":")) && *token != '\0') { |
| 1268 | strncpy(sz_sec_last_token, sz_last_token, |
| 1269 | strlen(sz_last_token) + 1); |
| 1270 | strncpy(sz_last_token, token, strlen(token) + 1); |
| 1271 | token = strsep(&psz_cur, ":"); |
| 1272 | count++; /* optimizes processing */ |
| 1273 | } |
| 1274 | /* If token is 0 or 1, and sz_sec_last_token is DYN_DARAM or DYN_SARAM, |
| 1275 | or DYN_EXTERNAL, then mem granularity information is present |
| 1276 | within the section name - only process if there are at least three |
| 1277 | tokens within the section name (just a minor optimization) */ |
| 1278 | if (count >= 3) |
| 1279 | strict_strtol(sz_last_token, 10, (long *)&req); |
| 1280 | |
| 1281 | if ((req == 0) || (req == 1)) { |
| 1282 | if (strcmp(sz_sec_last_token, "DYN_DARAM") == 0) { |
| 1283 | seg_id = 0; |
| 1284 | } else { |
| 1285 | if (strcmp(sz_sec_last_token, "DYN_SARAM") == 0) { |
| 1286 | seg_id = 1; |
| 1287 | } else { |
| 1288 | if (strcmp(sz_sec_last_token, |
| 1289 | "DYN_EXTERNAL") == 0) |
| 1290 | seg_id = 2; |
| 1291 | } |
| 1292 | } |
| 1293 | } |
| 1294 | func_cont: |
| 1295 | kfree(sz_sect_name); |
| 1296 | sz_sect_name = NULL; |
| 1297 | kfree(sz_last_token); |
| 1298 | sz_last_token = NULL; |
| 1299 | kfree(sz_sec_last_token); |
| 1300 | sz_sec_last_token = NULL; |
| 1301 | |
| 1302 | if (mem_sect_type == DBLL_CODE) |
| 1303 | alloc_size = info->size + GEM_L1P_PREFETCH_SIZE; |
| 1304 | else |
| 1305 | alloc_size = info->size; |
| 1306 | |
| 1307 | if (info->load_addr != info->run_addr) |
| 1308 | run_addr_flag = 1; |
| 1309 | /* TODO - ideally, we can pass the alignment requirement also |
| 1310 | * from here */ |
| 1311 | if (lib != NULL) { |
| 1312 | status = |
| 1313 | (lib->target_obj->attrs.alloc) (lib->target_obj->attrs. |
| 1314 | rmm_handle, mem_sect_type, |
| 1315 | alloc_size, align, |
| 1316 | (u32 *) &rmm_addr_obj, |
| 1317 | seg_id, req, FALSE); |
| 1318 | } |
| 1319 | if (DSP_FAILED(status)) { |
| 1320 | ret = false; |
| 1321 | } else { |
| 1322 | /* RMM gives word address. Need to convert to byte address */ |
| 1323 | info->load_addr = rmm_addr_obj.addr * DSPWORDSIZE; |
| 1324 | if (!run_addr_flag) |
| 1325 | info->run_addr = info->load_addr; |
| 1326 | info->context = (u32) rmm_addr_obj.segid; |
| 1327 | dev_dbg(bridge, "%s: %s base = 0x%x len = 0x%x, " |
| 1328 | "info->run_addr 0x%x, info->load_addr 0x%x\n", |
| 1329 | __func__, info->name, info->load_addr / DSPWORDSIZE, |
| 1330 | info->size / DSPWORDSIZE, info->run_addr, |
| 1331 | info->load_addr); |
| 1332 | } |
| 1333 | return ret; |
| 1334 | } |
| 1335 | |
| 1336 | /* |
| 1337 | * ======== rmm_dealloc ======== |
| 1338 | */ |
| 1339 | static void rmm_dealloc(struct dynamic_loader_allocate *this, |
| 1340 | struct ldr_section_info *info) |
| 1341 | { |
| 1342 | struct dbll_alloc *dbll_alloc_obj = (struct dbll_alloc *)this; |
| 1343 | struct dbll_library_obj *lib; |
| 1344 | u32 segid; |
| 1345 | int status = 0; |
| 1346 | unsigned stype = DLOAD_SECTION_TYPE(info->type); |
| 1347 | u32 mem_sect_type; |
| 1348 | u32 free_size = 0; |
| 1349 | |
| 1350 | mem_sect_type = |
| 1351 | (stype == DLOAD_TEXT) ? DBLL_CODE : (stype == |
| 1352 | DLOAD_BSS) ? DBLL_BSS : |
| 1353 | DBLL_DATA; |
| 1354 | DBC_REQUIRE(this != NULL); |
| 1355 | lib = dbll_alloc_obj->lib; |
| 1356 | DBC_REQUIRE(lib); |
| 1357 | /* segid was set by alloc function */ |
| 1358 | segid = (u32) info->context; |
| 1359 | if (mem_sect_type == DBLL_CODE) |
| 1360 | free_size = info->size + GEM_L1P_PREFETCH_SIZE; |
| 1361 | else |
| 1362 | free_size = info->size; |
| 1363 | if (lib != NULL) { |
| 1364 | status = |
| 1365 | (lib->target_obj->attrs.free) (lib->target_obj->attrs. |
| 1366 | sym_handle, segid, |
| 1367 | info->load_addr / |
| 1368 | DSPWORDSIZE, free_size, |
| 1369 | false); |
| 1370 | } |
| 1371 | } |
| 1372 | |
| 1373 | /* dynamic_loader_initialize */ |
| 1374 | /* |
| 1375 | * ======== connect ======== |
| 1376 | */ |
| 1377 | static int connect(struct dynamic_loader_initialize *this) |
| 1378 | { |
| 1379 | return true; |
| 1380 | } |
| 1381 | |
| 1382 | /* |
| 1383 | * ======== read_mem ======== |
| 1384 | * This function does not need to be implemented. |
| 1385 | */ |
| 1386 | static int read_mem(struct dynamic_loader_initialize *this, void *buf, |
| 1387 | ldr_addr addr, struct ldr_section_info *info, |
| 1388 | unsigned nbytes) |
| 1389 | { |
| 1390 | struct dbll_init_obj *init_obj = (struct dbll_init_obj *)this; |
| 1391 | struct dbll_library_obj *lib; |
| 1392 | int bytes_read = 0; |
| 1393 | |
| 1394 | DBC_REQUIRE(this != NULL); |
| 1395 | lib = init_obj->lib; |
| 1396 | DBC_REQUIRE(lib); |
| 1397 | /* Need bridge_brd_read function */ |
| 1398 | return bytes_read; |
| 1399 | } |
| 1400 | |
| 1401 | /* |
| 1402 | * ======== write_mem ======== |
| 1403 | */ |
| 1404 | static int write_mem(struct dynamic_loader_initialize *this, void *buf, |
| 1405 | ldr_addr addr, struct ldr_section_info *info, |
| 1406 | unsigned bytes) |
| 1407 | { |
| 1408 | struct dbll_init_obj *init_obj = (struct dbll_init_obj *)this; |
| 1409 | struct dbll_library_obj *lib; |
| 1410 | struct dbll_tar_obj *target_obj; |
| 1411 | struct dbll_sect_info sect_info; |
| 1412 | u32 mem_sect_type; |
| 1413 | bool ret = true; |
| 1414 | |
| 1415 | DBC_REQUIRE(this != NULL); |
| 1416 | lib = init_obj->lib; |
| 1417 | if (!lib) |
| 1418 | return false; |
| 1419 | |
| 1420 | target_obj = lib->target_obj; |
| 1421 | |
| 1422 | mem_sect_type = |
| 1423 | (DLOAD_SECTION_TYPE(info->type) == |
| 1424 | DLOAD_TEXT) ? DBLL_CODE : DBLL_DATA; |
| 1425 | if (target_obj && target_obj->attrs.write) { |
| 1426 | ret = |
| 1427 | (*target_obj->attrs.write) (target_obj->attrs.input_params, |
| 1428 | addr, buf, bytes, |
| 1429 | mem_sect_type); |
| 1430 | |
| 1431 | if (target_obj->attrs.log_write) { |
| 1432 | sect_info.name = info->name; |
| 1433 | sect_info.sect_run_addr = info->run_addr; |
| 1434 | sect_info.sect_load_addr = info->load_addr; |
| 1435 | sect_info.size = info->size; |
| 1436 | sect_info.type = mem_sect_type; |
| 1437 | /* Pass the information about what we've written to |
| 1438 | * another module */ |
| 1439 | (*target_obj->attrs.log_write) (target_obj->attrs. |
| 1440 | log_write_handle, |
| 1441 | §_info, addr, |
| 1442 | bytes); |
| 1443 | } |
| 1444 | } |
| 1445 | return ret; |
| 1446 | } |
| 1447 | |
| 1448 | /* |
| 1449 | * ======== fill_mem ======== |
| 1450 | * Fill bytes of memory at a given address with a given value by |
| 1451 | * writing from a buffer containing the given value. Write in |
| 1452 | * sets of MAXEXPR (128) bytes to avoid large stack buffer issues. |
| 1453 | */ |
| 1454 | static int fill_mem(struct dynamic_loader_initialize *this, ldr_addr addr, |
| 1455 | struct ldr_section_info *info, unsigned bytes, unsigned val) |
| 1456 | { |
| 1457 | bool ret = true; |
| 1458 | char *pbuf; |
| 1459 | struct dbll_library_obj *lib; |
| 1460 | struct dbll_init_obj *init_obj = (struct dbll_init_obj *)this; |
| 1461 | |
| 1462 | DBC_REQUIRE(this != NULL); |
| 1463 | lib = init_obj->lib; |
| 1464 | pbuf = NULL; |
| 1465 | /* Pass the NULL pointer to write_mem to get the start address of Shared |
| 1466 | memory. This is a trick to just get the start address, there is no |
| 1467 | writing taking place with this Writemem |
| 1468 | */ |
| 1469 | if ((lib->target_obj->attrs.write) != (dbll_write_fxn) no_op) |
| 1470 | write_mem(this, &pbuf, addr, info, 0); |
| 1471 | if (pbuf) |
| 1472 | memset(pbuf, val, bytes); |
| 1473 | |
| 1474 | return ret; |
| 1475 | } |
| 1476 | |
| 1477 | /* |
| 1478 | * ======== execute ======== |
| 1479 | */ |
| 1480 | static int execute(struct dynamic_loader_initialize *this, ldr_addr start) |
| 1481 | { |
| 1482 | struct dbll_init_obj *init_obj = (struct dbll_init_obj *)this; |
| 1483 | struct dbll_library_obj *lib; |
| 1484 | bool ret = true; |
| 1485 | |
| 1486 | DBC_REQUIRE(this != NULL); |
| 1487 | lib = init_obj->lib; |
| 1488 | DBC_REQUIRE(lib); |
| 1489 | /* Save entry point */ |
| 1490 | if (lib != NULL) |
| 1491 | lib->entry = (u32) start; |
| 1492 | |
| 1493 | return ret; |
| 1494 | } |
| 1495 | |
| 1496 | /* |
| 1497 | * ======== release ======== |
| 1498 | */ |
| 1499 | static void release(struct dynamic_loader_initialize *this) |
| 1500 | { |
| 1501 | } |
| 1502 | |
Felipe Contreras | 4f551c8f | 2010-07-04 16:36:26 +0300 | [diff] [blame] | 1503 | #ifdef CONFIG_TIDSPBRIDGE_BACKTRACE |
Omar Ramirez Luna | c4ca3d5 | 2010-06-23 16:01:57 +0300 | [diff] [blame] | 1504 | /** |
| 1505 | * find_symbol_context - Basic symbol context structure |
| 1506 | * @address: Symbol Adress |
| 1507 | * @offset_range: Offset range where the search for the DSP symbol |
| 1508 | * started. |
| 1509 | * @cur_best_offset: Best offset to start looking for the DSP symbol |
| 1510 | * @sym_addr: Address of the DSP symbol |
| 1511 | * @name: Symbol name |
| 1512 | * |
| 1513 | */ |
| 1514 | struct find_symbol_context { |
| 1515 | /* input */ |
| 1516 | u32 address; |
| 1517 | u32 offset_range; |
| 1518 | /* state */ |
| 1519 | u32 cur_best_offset; |
| 1520 | /* output */ |
| 1521 | u32 sym_addr; |
| 1522 | char name[120]; |
| 1523 | }; |
| 1524 | |
| 1525 | /** |
| 1526 | * find_symbol_callback() - Validates symbol address and copies the symbol name |
| 1527 | * to the user data. |
| 1528 | * @elem: dsp library context |
| 1529 | * @user_data: Find symbol context |
| 1530 | * |
| 1531 | */ |
| 1532 | void find_symbol_callback(void *elem, void *user_data) |
| 1533 | { |
| 1534 | struct dbll_symbol *symbol = elem; |
| 1535 | struct find_symbol_context *context = user_data; |
| 1536 | u32 symbol_addr = symbol->value.value; |
| 1537 | u32 offset = context->address - symbol_addr; |
| 1538 | |
| 1539 | /* |
| 1540 | * Address given should be greater than symbol address, |
| 1541 | * symbol address should be within specified range |
| 1542 | * and the offset should be better than previous one |
| 1543 | */ |
| 1544 | if (context->address >= symbol_addr && symbol_addr < (u32)-1 && |
| 1545 | offset < context->cur_best_offset) { |
| 1546 | context->cur_best_offset = offset; |
| 1547 | context->sym_addr = symbol_addr; |
| 1548 | strncpy(context->name, symbol->name, sizeof(context->name)); |
| 1549 | } |
| 1550 | |
| 1551 | return; |
| 1552 | } |
| 1553 | |
| 1554 | /** |
| 1555 | * dbll_find_dsp_symbol() - This function retrieves the dsp symbol from the dsp binary. |
| 1556 | * @zl_lib: DSP binary obj library pointer |
| 1557 | * @address: Given address to find the dsp symbol |
| 1558 | * @offset_range: offset range to look for dsp symbol |
| 1559 | * @sym_addr_output: Symbol Output address |
| 1560 | * @name_output: String with the dsp symbol |
| 1561 | * |
| 1562 | * This function retrieves the dsp symbol from the dsp binary. |
| 1563 | */ |
| 1564 | bool dbll_find_dsp_symbol(struct dbll_library_obj *zl_lib, u32 address, |
| 1565 | u32 offset_range, u32 *sym_addr_output, |
| 1566 | char *name_output) |
| 1567 | { |
| 1568 | bool status = false; |
| 1569 | struct find_symbol_context context; |
| 1570 | |
| 1571 | context.address = address; |
| 1572 | context.offset_range = offset_range; |
| 1573 | context.cur_best_offset = offset_range; |
| 1574 | context.sym_addr = 0; |
| 1575 | context.name[0] = '\0'; |
| 1576 | |
| 1577 | gh_iterate(zl_lib->sym_tab, find_symbol_callback, &context); |
| 1578 | |
| 1579 | if (context.name[0]) { |
| 1580 | status = true; |
| 1581 | strcpy(name_output, context.name); |
| 1582 | *sym_addr_output = context.sym_addr; |
| 1583 | } |
| 1584 | |
| 1585 | return status; |
| 1586 | } |
Felipe Contreras | 4f551c8f | 2010-07-04 16:36:26 +0300 | [diff] [blame] | 1587 | #endif |