1 /* bfd back-end for HP PA-RISC SOM objects. 2 Copyright (C) 1990-2026 Free Software Foundation, Inc. 3 4 Contributed by the Center for Software Science at the 5 University of Utah. 6 7 This file is part of BFD, the Binary File Descriptor library. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 22 02110-1301, USA. */ 23 24 #include "sysdep.h" 25 #include "bfd.h" 26 #include "libiberty.h" 27 #include "libbfd.h" 28 #include "som.h" 29 #include "safe-ctype.h" 30 #include "som/reloc.h" 31 #include "aout/ar.h" 32 33 static bfd_reloc_status_type hppa_som_reloc 34 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); 35 static bool som_mkobject (bfd *); 36 static bool som_is_space (asection *); 37 static bool som_is_subspace (asection *); 38 static int compare_subspaces (const void *, const void *); 39 static uint32_t som_compute_checksum (struct som_external_header *); 40 static bool som_build_and_write_symbol_table (bfd *); 41 static unsigned int som_slurp_symbol_table (bfd *); 42 43 /* Magic not defined in standard HP-UX header files until 8.0. */ 44 45 #ifndef CPU_PA_RISC1_0 46 #define CPU_PA_RISC1_0 0x20B 47 #endif /* CPU_PA_RISC1_0 */ 48 49 #ifndef CPU_PA_RISC1_1 50 #define CPU_PA_RISC1_1 0x210 51 #endif /* CPU_PA_RISC1_1 */ 52 53 #ifndef CPU_PA_RISC2_0 54 #define CPU_PA_RISC2_0 0x214 55 #endif /* CPU_PA_RISC2_0 */ 56 57 #ifndef _PA_RISC1_0_ID 58 #define _PA_RISC1_0_ID CPU_PA_RISC1_0 59 #endif /* _PA_RISC1_0_ID */ 60 61 #ifndef _PA_RISC1_1_ID 62 #define _PA_RISC1_1_ID CPU_PA_RISC1_1 63 #endif /* _PA_RISC1_1_ID */ 64 65 #ifndef _PA_RISC2_0_ID 66 #define _PA_RISC2_0_ID CPU_PA_RISC2_0 67 #endif /* _PA_RISC2_0_ID */ 68 69 #ifndef _PA_RISC_MAXID 70 #define _PA_RISC_MAXID 0x2FF 71 #endif /* _PA_RISC_MAXID */ 72 73 #ifndef _PA_RISC_ID 74 #define _PA_RISC_ID(__m_num) \ 75 (((__m_num) == _PA_RISC1_0_ID) || \ 76 ((__m_num) >= _PA_RISC1_1_ID && (__m_num) <= _PA_RISC_MAXID)) 77 #endif /* _PA_RISC_ID */ 78 79 /* HIUX in it's infinite stupidity changed the names for several "well 80 known" constants. Work around such braindamage. Try the HPUX version 81 first, then the HIUX version, and finally provide a default. */ 82 #ifdef HPUX_AUX_ID 83 #define EXEC_AUX_ID HPUX_AUX_ID 84 #endif 85 86 #if !defined (EXEC_AUX_ID) && defined (HIUX_AUX_ID) 87 #define EXEC_AUX_ID HIUX_AUX_ID 88 #endif 89 90 #ifndef EXEC_AUX_ID 91 #define EXEC_AUX_ID 0 92 #endif 93 94 /* Size (in chars) of the temporary buffers used during fixup and string 95 table writes. */ 96 97 #define SOM_TMP_BUFSIZE 8192 98 99 /* Size of the hash table in archives. */ 100 #define SOM_LST_HASH_SIZE 31 101 102 /* Max number of SOMs to be found in an archive. */ 103 #define SOM_LST_MODULE_LIMIT 1024 104 105 /* Generic alignment macro. */ 106 #define SOM_ALIGN(val, alignment) \ 107 (((val) + (alignment) - 1) &~ ((unsigned long) (alignment) - 1)) 108 109 /* SOM allows any one of the four previous relocations to be reused 110 with a "R_PREV_FIXUP" relocation entry. Since R_PREV_FIXUP 111 relocations are always a single byte, using a R_PREV_FIXUP instead 112 of some multi-byte relocation makes object files smaller. 113 114 Note one side effect of using a R_PREV_FIXUP is the relocation that 115 is being repeated moves to the front of the queue. */ 116 static struct reloc_queue 117 { 118 unsigned char *reloc; 119 unsigned int size; 120 } reloc_queue[4]; 121 122 /* This fully describes the symbol types which may be attached to 123 an EXPORT or IMPORT directive. Only SOM uses this formation 124 (ELF has no need for it). */ 125 typedef enum 126 { 127 SYMBOL_TYPE_UNKNOWN, 128 SYMBOL_TYPE_ABSOLUTE, 129 SYMBOL_TYPE_CODE, 130 SYMBOL_TYPE_DATA, 131 SYMBOL_TYPE_ENTRY, 132 SYMBOL_TYPE_MILLICODE, 133 SYMBOL_TYPE_PLABEL, 134 SYMBOL_TYPE_PRI_PROG, 135 SYMBOL_TYPE_SEC_PROG, 136 } pa_symbol_type; 137 138 struct section_to_type 139 { 140 const char *section; 141 char type; 142 }; 143 144 /* Assorted symbol information that needs to be derived from the BFD symbol 145 and/or the BFD backend private symbol data. */ 146 struct som_misc_symbol_info 147 { 148 unsigned int symbol_type; 149 unsigned int symbol_scope; 150 unsigned int arg_reloc; 151 unsigned int symbol_info; 152 unsigned int symbol_value; 153 unsigned int priv_level; 154 unsigned int secondary_def; 155 unsigned int is_comdat; 156 unsigned int is_common; 157 unsigned int dup_common; 158 }; 159 160 /* Map SOM section names to POSIX/BSD single-character symbol types. 161 162 This table includes all the standard subspaces as defined in the 163 current "PRO ABI for PA-RISC Systems", $UNWIND$ which for 164 some reason was left out, and sections specific to embedded stabs. */ 165 166 static const struct section_to_type stt[] = 167 { 168 {"$TEXT$", 't'}, 169 {"$SHLIB_INFO$", 't'}, 170 {"$MILLICODE$", 't'}, 171 {"$LIT$", 't'}, 172 {"$CODE$", 't'}, 173 {"$UNWIND_START$", 't'}, 174 {"$UNWIND$", 't'}, 175 {"$PRIVATE$", 'd'}, 176 {"$PLT$", 'd'}, 177 {"$SHLIB_DATA$", 'd'}, 178 {"$DATA$", 'd'}, 179 {"$SHORTDATA$", 'g'}, 180 {"$DLT$", 'd'}, 181 {"$GLOBAL$", 'g'}, 182 {"$SHORTBSS$", 's'}, 183 {"$BSS$", 'b'}, 184 {"$GDB_STRINGS$", 'N'}, 185 {"$GDB_SYMBOLS$", 'N'}, 186 {0, 0} 187 }; 188 189 /* About the relocation formatting table... 190 191 There are 256 entries in the table, one for each possible 192 relocation opcode available in SOM. We index the table by 193 the relocation opcode. The names and operations are those 194 defined by a.out_800 (4). 195 196 Right now this table is only used to count and perform minimal 197 processing on relocation streams so that they can be internalized 198 into BFD and symbolically printed by utilities. To make actual use 199 of them would be much more difficult, BFD's concept of relocations 200 is far too simple to handle SOM relocations. The basic assumption 201 that a relocation can be completely processed independent of other 202 relocations before an object file is written is invalid for SOM. 203 204 The SOM relocations are meant to be processed as a stream, they 205 specify copying of data from the input section to the output section 206 while possibly modifying the data in some manner. They also can 207 specify that a variable number of zeros or uninitialized data be 208 inserted on in the output segment at the current offset. Some 209 relocations specify that some previous relocation be re-applied at 210 the current location in the input/output sections. And finally a number 211 of relocations have effects on other sections (R_ENTRY, R_EXIT, 212 R_UNWIND_AUX and a variety of others). There isn't even enough room 213 in the BFD relocation data structure to store enough information to 214 perform all the relocations. 215 216 Each entry in the table has three fields. 217 218 The first entry is an index into this "class" of relocations. This 219 index can then be used as a variable within the relocation itself. 220 221 The second field is a format string which actually controls processing 222 of the relocation. It uses a simple postfix machine to do calculations 223 based on variables/constants found in the string and the relocation 224 stream. 225 226 The third field specifys whether or not this relocation may use 227 a constant (V) from the previous R_DATA_OVERRIDE rather than a constant 228 stored in the instruction. 229 230 Variables: 231 232 L = input space byte count 233 D = index into class of relocations 234 M = output space byte count 235 N = statement number (unused?) 236 O = stack operation 237 R = parameter relocation bits 238 S = symbol index 239 T = first 32 bits of stack unwind information 240 U = second 32 bits of stack unwind information 241 V = a literal constant (usually used in the next relocation) 242 P = a previous relocation 243 244 Lower case letters (starting with 'b') refer to following 245 bytes in the relocation stream. 'b' is the next 1 byte, 246 c is the next 2 bytes, d is the next 3 bytes, etc... 247 This is the variable part of the relocation entries that 248 makes our life a living hell. 249 250 numerical constants are also used in the format string. Note 251 the constants are represented in decimal. 252 253 '+', "*" and "=" represents the obvious postfix operators. 254 '<' represents a left shift. 255 256 Stack Operations: 257 258 Parameter Relocation Bits: 259 260 Unwind Entries: 261 262 Previous Relocations: The index field represents which in the queue 263 of 4 previous fixups should be re-applied. 264 265 Literal Constants: These are generally used to represent addend 266 parts of relocations when these constants are not stored in the 267 fields of the instructions themselves. For example the instruction 268 addil foo-$global$-0x1234 would use an override for "0x1234" rather 269 than storing it into the addil itself. */ 270 271 struct fixup_format 272 { 273 int D; 274 const char *format; 275 }; 276 277 static const struct fixup_format som_fixup_formats[256] = 278 { 279 /* R_NO_RELOCATION. */ 280 { 0, "LD1+4*=" }, /* 0x00 */ 281 { 1, "LD1+4*=" }, /* 0x01 */ 282 { 2, "LD1+4*=" }, /* 0x02 */ 283 { 3, "LD1+4*=" }, /* 0x03 */ 284 { 4, "LD1+4*=" }, /* 0x04 */ 285 { 5, "LD1+4*=" }, /* 0x05 */ 286 { 6, "LD1+4*=" }, /* 0x06 */ 287 { 7, "LD1+4*=" }, /* 0x07 */ 288 { 8, "LD1+4*=" }, /* 0x08 */ 289 { 9, "LD1+4*=" }, /* 0x09 */ 290 { 10, "LD1+4*=" }, /* 0x0a */ 291 { 11, "LD1+4*=" }, /* 0x0b */ 292 { 12, "LD1+4*=" }, /* 0x0c */ 293 { 13, "LD1+4*=" }, /* 0x0d */ 294 { 14, "LD1+4*=" }, /* 0x0e */ 295 { 15, "LD1+4*=" }, /* 0x0f */ 296 { 16, "LD1+4*=" }, /* 0x10 */ 297 { 17, "LD1+4*=" }, /* 0x11 */ 298 { 18, "LD1+4*=" }, /* 0x12 */ 299 { 19, "LD1+4*=" }, /* 0x13 */ 300 { 20, "LD1+4*=" }, /* 0x14 */ 301 { 21, "LD1+4*=" }, /* 0x15 */ 302 { 22, "LD1+4*=" }, /* 0x16 */ 303 { 23, "LD1+4*=" }, /* 0x17 */ 304 { 0, "LD8<b+1+4*=" }, /* 0x18 */ 305 { 1, "LD8<b+1+4*=" }, /* 0x19 */ 306 { 2, "LD8<b+1+4*=" }, /* 0x1a */ 307 { 3, "LD8<b+1+4*=" }, /* 0x1b */ 308 { 0, "LD16<c+1+4*=" }, /* 0x1c */ 309 { 1, "LD16<c+1+4*=" }, /* 0x1d */ 310 { 2, "LD16<c+1+4*=" }, /* 0x1e */ 311 { 0, "Ld1+=" }, /* 0x1f */ 312 /* R_ZEROES. */ 313 { 0, "Lb1+4*=" }, /* 0x20 */ 314 { 1, "Ld1+=" }, /* 0x21 */ 315 /* R_UNINIT. */ 316 { 0, "Lb1+4*=" }, /* 0x22 */ 317 { 1, "Ld1+=" }, /* 0x23 */ 318 /* R_RELOCATION. */ 319 { 0, "L4=" }, /* 0x24 */ 320 /* R_DATA_ONE_SYMBOL. */ 321 { 0, "L4=Sb=" }, /* 0x25 */ 322 { 1, "L4=Sd=" }, /* 0x26 */ 323 /* R_DATA_PLABEL. */ 324 { 0, "L4=Sb=" }, /* 0x27 */ 325 { 1, "L4=Sd=" }, /* 0x28 */ 326 /* R_SPACE_REF. */ 327 { 0, "L4=" }, /* 0x29 */ 328 /* R_REPEATED_INIT. */ 329 { 0, "L4=Mb1+4*=" }, /* 0x2a */ 330 { 1, "Lb4*=Mb1+L*=" }, /* 0x2b */ 331 { 2, "Lb4*=Md1+4*=" }, /* 0x2c */ 332 { 3, "Ld1+=Me1+=" }, /* 0x2d */ 333 { 0, "" }, /* 0x2e */ 334 { 0, "" }, /* 0x2f */ 335 /* R_PCREL_CALL. */ 336 { 0, "L4=RD=Sb=" }, /* 0x30 */ 337 { 1, "L4=RD=Sb=" }, /* 0x31 */ 338 { 2, "L4=RD=Sb=" }, /* 0x32 */ 339 { 3, "L4=RD=Sb=" }, /* 0x33 */ 340 { 4, "L4=RD=Sb=" }, /* 0x34 */ 341 { 5, "L4=RD=Sb=" }, /* 0x35 */ 342 { 6, "L4=RD=Sb=" }, /* 0x36 */ 343 { 7, "L4=RD=Sb=" }, /* 0x37 */ 344 { 8, "L4=RD=Sb=" }, /* 0x38 */ 345 { 9, "L4=RD=Sb=" }, /* 0x39 */ 346 { 0, "L4=RD8<b+=Sb=" }, /* 0x3a */ 347 { 1, "L4=RD8<b+=Sb=" }, /* 0x3b */ 348 { 0, "L4=RD8<b+=Sd=" }, /* 0x3c */ 349 { 1, "L4=RD8<b+=Sd=" }, /* 0x3d */ 350 /* R_SHORT_PCREL_MODE. */ 351 { 0, "" }, /* 0x3e */ 352 /* R_LONG_PCREL_MODE. */ 353 { 0, "" }, /* 0x3f */ 354 /* R_ABS_CALL. */ 355 { 0, "L4=RD=Sb=" }, /* 0x40 */ 356 { 1, "L4=RD=Sb=" }, /* 0x41 */ 357 { 2, "L4=RD=Sb=" }, /* 0x42 */ 358 { 3, "L4=RD=Sb=" }, /* 0x43 */ 359 { 4, "L4=RD=Sb=" }, /* 0x44 */ 360 { 5, "L4=RD=Sb=" }, /* 0x45 */ 361 { 6, "L4=RD=Sb=" }, /* 0x46 */ 362 { 7, "L4=RD=Sb=" }, /* 0x47 */ 363 { 8, "L4=RD=Sb=" }, /* 0x48 */ 364 { 9, "L4=RD=Sb=" }, /* 0x49 */ 365 { 0, "L4=RD8<b+=Sb=" }, /* 0x4a */ 366 { 1, "L4=RD8<b+=Sb=" }, /* 0x4b */ 367 { 0, "L4=RD8<b+=Sd=" }, /* 0x4c */ 368 { 1, "L4=RD8<b+=Sd=" }, /* 0x4d */ 369 /* R_RESERVED. */ 370 { 0, "" }, /* 0x4e */ 371 { 0, "" }, /* 0x4f */ 372 /* R_DP_RELATIVE. */ 373 { 0, "L4=SD=" }, /* 0x50 */ 374 { 1, "L4=SD=" }, /* 0x51 */ 375 { 2, "L4=SD=" }, /* 0x52 */ 376 { 3, "L4=SD=" }, /* 0x53 */ 377 { 4, "L4=SD=" }, /* 0x54 */ 378 { 5, "L4=SD=" }, /* 0x55 */ 379 { 6, "L4=SD=" }, /* 0x56 */ 380 { 7, "L4=SD=" }, /* 0x57 */ 381 { 8, "L4=SD=" }, /* 0x58 */ 382 { 9, "L4=SD=" }, /* 0x59 */ 383 { 10, "L4=SD=" }, /* 0x5a */ 384 { 11, "L4=SD=" }, /* 0x5b */ 385 { 12, "L4=SD=" }, /* 0x5c */ 386 { 13, "L4=SD=" }, /* 0x5d */ 387 { 14, "L4=SD=" }, /* 0x5e */ 388 { 15, "L4=SD=" }, /* 0x5f */ 389 { 16, "L4=SD=" }, /* 0x60 */ 390 { 17, "L4=SD=" }, /* 0x61 */ 391 { 18, "L4=SD=" }, /* 0x62 */ 392 { 19, "L4=SD=" }, /* 0x63 */ 393 { 20, "L4=SD=" }, /* 0x64 */ 394 { 21, "L4=SD=" }, /* 0x65 */ 395 { 22, "L4=SD=" }, /* 0x66 */ 396 { 23, "L4=SD=" }, /* 0x67 */ 397 { 24, "L4=SD=" }, /* 0x68 */ 398 { 25, "L4=SD=" }, /* 0x69 */ 399 { 26, "L4=SD=" }, /* 0x6a */ 400 { 27, "L4=SD=" }, /* 0x6b */ 401 { 28, "L4=SD=" }, /* 0x6c */ 402 { 29, "L4=SD=" }, /* 0x6d */ 403 { 30, "L4=SD=" }, /* 0x6e */ 404 { 31, "L4=SD=" }, /* 0x6f */ 405 { 32, "L4=Sb=" }, /* 0x70 */ 406 { 33, "L4=Sd=" }, /* 0x71 */ 407 /* R_DATA_GPREL. */ 408 { 0, "L4=Sd=" }, /* 0x72 */ 409 /* R_RESERVED. */ 410 { 0, "" }, /* 0x73 */ 411 { 0, "" }, /* 0x74 */ 412 { 0, "" }, /* 0x75 */ 413 { 0, "" }, /* 0x76 */ 414 { 0, "" }, /* 0x77 */ 415 /* R_DLT_REL. */ 416 { 0, "L4=Sb=" }, /* 0x78 */ 417 { 1, "L4=Sd=" }, /* 0x79 */ 418 /* R_RESERVED. */ 419 { 0, "" }, /* 0x7a */ 420 { 0, "" }, /* 0x7b */ 421 { 0, "" }, /* 0x7c */ 422 { 0, "" }, /* 0x7d */ 423 { 0, "" }, /* 0x7e */ 424 { 0, "" }, /* 0x7f */ 425 /* R_CODE_ONE_SYMBOL. */ 426 { 0, "L4=SD=" }, /* 0x80 */ 427 { 1, "L4=SD=" }, /* 0x81 */ 428 { 2, "L4=SD=" }, /* 0x82 */ 429 { 3, "L4=SD=" }, /* 0x83 */ 430 { 4, "L4=SD=" }, /* 0x84 */ 431 { 5, "L4=SD=" }, /* 0x85 */ 432 { 6, "L4=SD=" }, /* 0x86 */ 433 { 7, "L4=SD=" }, /* 0x87 */ 434 { 8, "L4=SD=" }, /* 0x88 */ 435 { 9, "L4=SD=" }, /* 0x89 */ 436 { 10, "L4=SD=" }, /* 0x8q */ 437 { 11, "L4=SD=" }, /* 0x8b */ 438 { 12, "L4=SD=" }, /* 0x8c */ 439 { 13, "L4=SD=" }, /* 0x8d */ 440 { 14, "L4=SD=" }, /* 0x8e */ 441 { 15, "L4=SD=" }, /* 0x8f */ 442 { 16, "L4=SD=" }, /* 0x90 */ 443 { 17, "L4=SD=" }, /* 0x91 */ 444 { 18, "L4=SD=" }, /* 0x92 */ 445 { 19, "L4=SD=" }, /* 0x93 */ 446 { 20, "L4=SD=" }, /* 0x94 */ 447 { 21, "L4=SD=" }, /* 0x95 */ 448 { 22, "L4=SD=" }, /* 0x96 */ 449 { 23, "L4=SD=" }, /* 0x97 */ 450 { 24, "L4=SD=" }, /* 0x98 */ 451 { 25, "L4=SD=" }, /* 0x99 */ 452 { 26, "L4=SD=" }, /* 0x9a */ 453 { 27, "L4=SD=" }, /* 0x9b */ 454 { 28, "L4=SD=" }, /* 0x9c */ 455 { 29, "L4=SD=" }, /* 0x9d */ 456 { 30, "L4=SD=" }, /* 0x9e */ 457 { 31, "L4=SD=" }, /* 0x9f */ 458 { 32, "L4=Sb=" }, /* 0xa0 */ 459 { 33, "L4=Sd=" }, /* 0xa1 */ 460 /* R_RESERVED. */ 461 { 0, "" }, /* 0xa2 */ 462 { 0, "" }, /* 0xa3 */ 463 { 0, "" }, /* 0xa4 */ 464 { 0, "" }, /* 0xa5 */ 465 { 0, "" }, /* 0xa6 */ 466 { 0, "" }, /* 0xa7 */ 467 { 0, "" }, /* 0xa8 */ 468 { 0, "" }, /* 0xa9 */ 469 { 0, "" }, /* 0xaa */ 470 { 0, "" }, /* 0xab */ 471 { 0, "" }, /* 0xac */ 472 { 0, "" }, /* 0xad */ 473 /* R_MILLI_REL. */ 474 { 0, "L4=Sb=" }, /* 0xae */ 475 { 1, "L4=Sd=" }, /* 0xaf */ 476 /* R_CODE_PLABEL. */ 477 { 0, "L4=Sb=" }, /* 0xb0 */ 478 { 1, "L4=Sd=" }, /* 0xb1 */ 479 /* R_BREAKPOINT. */ 480 { 0, "L4=" }, /* 0xb2 */ 481 /* R_ENTRY. */ 482 { 0, "Te=Ue=" }, /* 0xb3 */ 483 { 1, "Uf=" }, /* 0xb4 */ 484 /* R_ALT_ENTRY. */ 485 { 0, "" }, /* 0xb5 */ 486 /* R_EXIT. */ 487 { 0, "" }, /* 0xb6 */ 488 /* R_BEGIN_TRY. */ 489 { 0, "" }, /* 0xb7 */ 490 /* R_END_TRY. */ 491 { 0, "R0=" }, /* 0xb8 */ 492 { 1, "Rb4*=" }, /* 0xb9 */ 493 { 2, "Rd4*=" }, /* 0xba */ 494 /* R_BEGIN_BRTAB. */ 495 { 0, "" }, /* 0xbb */ 496 /* R_END_BRTAB. */ 497 { 0, "" }, /* 0xbc */ 498 /* R_STATEMENT. */ 499 { 0, "Nb=" }, /* 0xbd */ 500 { 1, "Nc=" }, /* 0xbe */ 501 { 2, "Nd=" }, /* 0xbf */ 502 /* R_DATA_EXPR. */ 503 { 0, "L4=" }, /* 0xc0 */ 504 /* R_CODE_EXPR. */ 505 { 0, "L4=" }, /* 0xc1 */ 506 /* R_FSEL. */ 507 { 0, "" }, /* 0xc2 */ 508 /* R_LSEL. */ 509 { 0, "" }, /* 0xc3 */ 510 /* R_RSEL. */ 511 { 0, "" }, /* 0xc4 */ 512 /* R_N_MODE. */ 513 { 0, "" }, /* 0xc5 */ 514 /* R_S_MODE. */ 515 { 0, "" }, /* 0xc6 */ 516 /* R_D_MODE. */ 517 { 0, "" }, /* 0xc7 */ 518 /* R_R_MODE. */ 519 { 0, "" }, /* 0xc8 */ 520 /* R_DATA_OVERRIDE. */ 521 { 0, "V0=" }, /* 0xc9 */ 522 { 1, "Vb=" }, /* 0xca */ 523 { 2, "Vc=" }, /* 0xcb */ 524 { 3, "Vd=" }, /* 0xcc */ 525 { 4, "Ve=" }, /* 0xcd */ 526 /* R_TRANSLATED. */ 527 { 0, "" }, /* 0xce */ 528 /* R_AUX_UNWIND. */ 529 { 0,"Sd=Ve=Ee=" }, /* 0xcf */ 530 /* R_COMP1. */ 531 { 0, "Ob=" }, /* 0xd0 */ 532 /* R_COMP2. */ 533 { 0, "Ob=Sd=" }, /* 0xd1 */ 534 /* R_COMP3. */ 535 { 0, "Ob=Ve=" }, /* 0xd2 */ 536 /* R_PREV_FIXUP. */ 537 { 0, "P" }, /* 0xd3 */ 538 { 1, "P" }, /* 0xd4 */ 539 { 2, "P" }, /* 0xd5 */ 540 { 3, "P" }, /* 0xd6 */ 541 /* R_SEC_STMT. */ 542 { 0, "" }, /* 0xd7 */ 543 /* R_N0SEL. */ 544 { 0, "" }, /* 0xd8 */ 545 /* R_N1SEL. */ 546 { 0, "" }, /* 0xd9 */ 547 /* R_LINETAB. */ 548 { 0, "Eb=Sd=Ve=" }, /* 0xda */ 549 /* R_LINETAB_ESC. */ 550 { 0, "Eb=Mb=" }, /* 0xdb */ 551 /* R_LTP_OVERRIDE. */ 552 { 0, "" }, /* 0xdc */ 553 /* R_COMMENT. */ 554 { 0, "Ob=Vf=" }, /* 0xdd */ 555 /* R_RESERVED. */ 556 { 0, "" }, /* 0xde */ 557 { 0, "" }, /* 0xdf */ 558 { 0, "" }, /* 0xe0 */ 559 { 0, "" }, /* 0xe1 */ 560 { 0, "" }, /* 0xe2 */ 561 { 0, "" }, /* 0xe3 */ 562 { 0, "" }, /* 0xe4 */ 563 { 0, "" }, /* 0xe5 */ 564 { 0, "" }, /* 0xe6 */ 565 { 0, "" }, /* 0xe7 */ 566 { 0, "" }, /* 0xe8 */ 567 { 0, "" }, /* 0xe9 */ 568 { 0, "" }, /* 0xea */ 569 { 0, "" }, /* 0xeb */ 570 { 0, "" }, /* 0xec */ 571 { 0, "" }, /* 0xed */ 572 { 0, "" }, /* 0xee */ 573 { 0, "" }, /* 0xef */ 574 { 0, "" }, /* 0xf0 */ 575 { 0, "" }, /* 0xf1 */ 576 { 0, "" }, /* 0xf2 */ 577 { 0, "" }, /* 0xf3 */ 578 { 0, "" }, /* 0xf4 */ 579 { 0, "" }, /* 0xf5 */ 580 { 0, "" }, /* 0xf6 */ 581 { 0, "" }, /* 0xf7 */ 582 { 0, "" }, /* 0xf8 */ 583 { 0, "" }, /* 0xf9 */ 584 { 0, "" }, /* 0xfa */ 585 { 0, "" }, /* 0xfb */ 586 { 0, "" }, /* 0xfc */ 587 { 0, "" }, /* 0xfd */ 588 { 0, "" }, /* 0xfe */ 589 { 0, "" }, /* 0xff */ 590 }; 591 592 static const int comp1_opcodes[] = 593 { 594 0x00, 595 0x40, 596 0x41, 597 0x42, 598 0x43, 599 0x44, 600 0x45, 601 0x46, 602 0x47, 603 0x48, 604 0x49, 605 0x4a, 606 0x4b, 607 0x60, 608 0x80, 609 0xa0, 610 0xc0, 611 -1 612 }; 613 614 static const int comp2_opcodes[] = 615 { 616 0x00, 617 0x80, 618 0x82, 619 0xc0, 620 -1 621 }; 622 623 static const int comp3_opcodes[] = 624 { 625 0x00, 626 0x02, 627 -1 628 }; 629 630 /* These apparently are not in older versions of hpux reloc.h (hpux7). */ 631 632 /* And these first appeared in hpux10. */ 633 #ifndef R_SHORT_PCREL_MODE 634 #define NO_PCREL_MODES 635 #define R_SHORT_PCREL_MODE 0x3e 636 #endif 637 638 #define SOM_HOWTO(SIZE, TYPE) \ 639 HOWTO(TYPE, 0, SIZE, 32, false, 0, 0, hppa_som_reloc, \ 640 #TYPE, false, 0, 0, false) 641 642 static reloc_howto_type som_hppa_howto_table[] = 643 { 644 SOM_HOWTO (0, R_NO_RELOCATION), 645 SOM_HOWTO (0, R_NO_RELOCATION), 646 SOM_HOWTO (0, R_NO_RELOCATION), 647 SOM_HOWTO (0, R_NO_RELOCATION), 648 SOM_HOWTO (0, R_NO_RELOCATION), 649 SOM_HOWTO (0, R_NO_RELOCATION), 650 SOM_HOWTO (0, R_NO_RELOCATION), 651 SOM_HOWTO (0, R_NO_RELOCATION), 652 SOM_HOWTO (0, R_NO_RELOCATION), 653 SOM_HOWTO (0, R_NO_RELOCATION), 654 SOM_HOWTO (0, R_NO_RELOCATION), 655 SOM_HOWTO (0, R_NO_RELOCATION), 656 SOM_HOWTO (0, R_NO_RELOCATION), 657 SOM_HOWTO (0, R_NO_RELOCATION), 658 SOM_HOWTO (0, R_NO_RELOCATION), 659 SOM_HOWTO (0, R_NO_RELOCATION), 660 SOM_HOWTO (0, R_NO_RELOCATION), 661 SOM_HOWTO (0, R_NO_RELOCATION), 662 SOM_HOWTO (0, R_NO_RELOCATION), 663 SOM_HOWTO (0, R_NO_RELOCATION), 664 SOM_HOWTO (0, R_NO_RELOCATION), 665 SOM_HOWTO (0, R_NO_RELOCATION), 666 SOM_HOWTO (0, R_NO_RELOCATION), 667 SOM_HOWTO (0, R_NO_RELOCATION), 668 SOM_HOWTO (0, R_NO_RELOCATION), 669 SOM_HOWTO (0, R_NO_RELOCATION), 670 SOM_HOWTO (0, R_NO_RELOCATION), 671 SOM_HOWTO (0, R_NO_RELOCATION), 672 SOM_HOWTO (0, R_NO_RELOCATION), 673 SOM_HOWTO (0, R_NO_RELOCATION), 674 SOM_HOWTO (0, R_NO_RELOCATION), 675 SOM_HOWTO (0, R_NO_RELOCATION), 676 SOM_HOWTO (0, R_ZEROES), 677 SOM_HOWTO (0, R_ZEROES), 678 SOM_HOWTO (0, R_UNINIT), 679 SOM_HOWTO (0, R_UNINIT), 680 SOM_HOWTO (4, R_RELOCATION), 681 SOM_HOWTO (4, R_DATA_ONE_SYMBOL), 682 SOM_HOWTO (4, R_DATA_ONE_SYMBOL), 683 SOM_HOWTO (4, R_DATA_PLABEL), 684 SOM_HOWTO (4, R_DATA_PLABEL), 685 SOM_HOWTO (4, R_SPACE_REF), 686 SOM_HOWTO (0, R_REPEATED_INIT), 687 SOM_HOWTO (0, R_REPEATED_INIT), 688 SOM_HOWTO (0, R_REPEATED_INIT), 689 SOM_HOWTO (0, R_REPEATED_INIT), 690 SOM_HOWTO (0, R_RESERVED), 691 SOM_HOWTO (0, R_RESERVED), 692 SOM_HOWTO (4, R_PCREL_CALL), 693 SOM_HOWTO (4, R_PCREL_CALL), 694 SOM_HOWTO (4, R_PCREL_CALL), 695 SOM_HOWTO (4, R_PCREL_CALL), 696 SOM_HOWTO (4, R_PCREL_CALL), 697 SOM_HOWTO (4, R_PCREL_CALL), 698 SOM_HOWTO (4, R_PCREL_CALL), 699 SOM_HOWTO (4, R_PCREL_CALL), 700 SOM_HOWTO (4, R_PCREL_CALL), 701 SOM_HOWTO (4, R_PCREL_CALL), 702 SOM_HOWTO (4, R_PCREL_CALL), 703 SOM_HOWTO (4, R_PCREL_CALL), 704 SOM_HOWTO (4, R_PCREL_CALL), 705 SOM_HOWTO (4, R_PCREL_CALL), 706 SOM_HOWTO (0, R_SHORT_PCREL_MODE), 707 SOM_HOWTO (0, R_LONG_PCREL_MODE), 708 SOM_HOWTO (4, R_ABS_CALL), 709 SOM_HOWTO (4, R_ABS_CALL), 710 SOM_HOWTO (4, R_ABS_CALL), 711 SOM_HOWTO (4, R_ABS_CALL), 712 SOM_HOWTO (4, R_ABS_CALL), 713 SOM_HOWTO (4, R_ABS_CALL), 714 SOM_HOWTO (4, R_ABS_CALL), 715 SOM_HOWTO (4, R_ABS_CALL), 716 SOM_HOWTO (4, R_ABS_CALL), 717 SOM_HOWTO (4, R_ABS_CALL), 718 SOM_HOWTO (4, R_ABS_CALL), 719 SOM_HOWTO (4, R_ABS_CALL), 720 SOM_HOWTO (4, R_ABS_CALL), 721 SOM_HOWTO (4, R_ABS_CALL), 722 SOM_HOWTO (0, R_RESERVED), 723 SOM_HOWTO (0, R_RESERVED), 724 SOM_HOWTO (4, R_DP_RELATIVE), 725 SOM_HOWTO (4, R_DP_RELATIVE), 726 SOM_HOWTO (4, R_DP_RELATIVE), 727 SOM_HOWTO (4, R_DP_RELATIVE), 728 SOM_HOWTO (4, R_DP_RELATIVE), 729 SOM_HOWTO (4, R_DP_RELATIVE), 730 SOM_HOWTO (4, R_DP_RELATIVE), 731 SOM_HOWTO (4, R_DP_RELATIVE), 732 SOM_HOWTO (4, R_DP_RELATIVE), 733 SOM_HOWTO (4, R_DP_RELATIVE), 734 SOM_HOWTO (4, R_DP_RELATIVE), 735 SOM_HOWTO (4, R_DP_RELATIVE), 736 SOM_HOWTO (4, R_DP_RELATIVE), 737 SOM_HOWTO (4, R_DP_RELATIVE), 738 SOM_HOWTO (4, R_DP_RELATIVE), 739 SOM_HOWTO (4, R_DP_RELATIVE), 740 SOM_HOWTO (4, R_DP_RELATIVE), 741 SOM_HOWTO (4, R_DP_RELATIVE), 742 SOM_HOWTO (4, R_DP_RELATIVE), 743 SOM_HOWTO (4, R_DP_RELATIVE), 744 SOM_HOWTO (4, R_DP_RELATIVE), 745 SOM_HOWTO (4, R_DP_RELATIVE), 746 SOM_HOWTO (4, R_DP_RELATIVE), 747 SOM_HOWTO (4, R_DP_RELATIVE), 748 SOM_HOWTO (4, R_DP_RELATIVE), 749 SOM_HOWTO (4, R_DP_RELATIVE), 750 SOM_HOWTO (4, R_DP_RELATIVE), 751 SOM_HOWTO (4, R_DP_RELATIVE), 752 SOM_HOWTO (4, R_DP_RELATIVE), 753 SOM_HOWTO (4, R_DP_RELATIVE), 754 SOM_HOWTO (4, R_DP_RELATIVE), 755 SOM_HOWTO (4, R_DP_RELATIVE), 756 SOM_HOWTO (4, R_DP_RELATIVE), 757 SOM_HOWTO (4, R_DP_RELATIVE), 758 SOM_HOWTO (4, R_DATA_GPREL), 759 SOM_HOWTO (0, R_RESERVED), 760 SOM_HOWTO (0, R_RESERVED), 761 SOM_HOWTO (0, R_RESERVED), 762 SOM_HOWTO (0, R_RESERVED), 763 SOM_HOWTO (0, R_RESERVED), 764 SOM_HOWTO (4, R_DLT_REL), 765 SOM_HOWTO (4, R_DLT_REL), 766 SOM_HOWTO (0, R_RESERVED), 767 SOM_HOWTO (0, R_RESERVED), 768 SOM_HOWTO (0, R_RESERVED), 769 SOM_HOWTO (0, R_RESERVED), 770 SOM_HOWTO (0, R_RESERVED), 771 SOM_HOWTO (0, R_RESERVED), 772 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 773 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 774 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 775 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 776 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 777 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 778 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 779 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 780 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 781 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 782 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 783 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 784 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 785 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 786 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 787 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 788 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 789 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 790 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 791 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 792 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 793 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 794 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 795 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 796 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 797 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 798 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 799 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 800 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 801 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 802 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 803 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 804 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 805 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 806 SOM_HOWTO (4, R_CODE_ONE_SYMBOL), 807 SOM_HOWTO (0, R_RESERVED), 808 SOM_HOWTO (0, R_RESERVED), 809 SOM_HOWTO (0, R_RESERVED), 810 SOM_HOWTO (0, R_RESERVED), 811 SOM_HOWTO (0, R_RESERVED), 812 SOM_HOWTO (0, R_RESERVED), 813 SOM_HOWTO (0, R_RESERVED), 814 SOM_HOWTO (0, R_RESERVED), 815 SOM_HOWTO (0, R_RESERVED), 816 SOM_HOWTO (0, R_RESERVED), 817 SOM_HOWTO (0, R_RESERVED), 818 SOM_HOWTO (4, R_MILLI_REL), 819 SOM_HOWTO (4, R_MILLI_REL), 820 SOM_HOWTO (4, R_CODE_PLABEL), 821 SOM_HOWTO (4, R_CODE_PLABEL), 822 SOM_HOWTO (4, R_BREAKPOINT), 823 SOM_HOWTO (0, R_ENTRY), 824 SOM_HOWTO (0, R_ENTRY), 825 SOM_HOWTO (0, R_ALT_ENTRY), 826 SOM_HOWTO (0, R_EXIT), 827 SOM_HOWTO (0, R_BEGIN_TRY), 828 SOM_HOWTO (0, R_END_TRY), 829 SOM_HOWTO (0, R_END_TRY), 830 SOM_HOWTO (0, R_END_TRY), 831 SOM_HOWTO (0, R_BEGIN_BRTAB), 832 SOM_HOWTO (0, R_END_BRTAB), 833 SOM_HOWTO (0, R_STATEMENT), 834 SOM_HOWTO (0, R_STATEMENT), 835 SOM_HOWTO (0, R_STATEMENT), 836 SOM_HOWTO (4, R_DATA_EXPR), 837 SOM_HOWTO (4, R_CODE_EXPR), 838 SOM_HOWTO (0, R_FSEL), 839 SOM_HOWTO (0, R_LSEL), 840 SOM_HOWTO (0, R_RSEL), 841 SOM_HOWTO (0, R_N_MODE), 842 SOM_HOWTO (0, R_S_MODE), 843 SOM_HOWTO (0, R_D_MODE), 844 SOM_HOWTO (0, R_R_MODE), 845 SOM_HOWTO (0, R_DATA_OVERRIDE), 846 SOM_HOWTO (0, R_DATA_OVERRIDE), 847 SOM_HOWTO (0, R_DATA_OVERRIDE), 848 SOM_HOWTO (0, R_DATA_OVERRIDE), 849 SOM_HOWTO (0, R_DATA_OVERRIDE), 850 SOM_HOWTO (0, R_TRANSLATED), 851 SOM_HOWTO (0, R_AUX_UNWIND), 852 SOM_HOWTO (0, R_COMP1), 853 SOM_HOWTO (0, R_COMP2), 854 SOM_HOWTO (0, R_COMP3), 855 SOM_HOWTO (0, R_PREV_FIXUP), 856 SOM_HOWTO (0, R_PREV_FIXUP), 857 SOM_HOWTO (0, R_PREV_FIXUP), 858 SOM_HOWTO (0, R_PREV_FIXUP), 859 SOM_HOWTO (0, R_SEC_STMT), 860 SOM_HOWTO (0, R_N0SEL), 861 SOM_HOWTO (0, R_N1SEL), 862 SOM_HOWTO (0, R_LINETAB), 863 SOM_HOWTO (0, R_LINETAB_ESC), 864 SOM_HOWTO (0, R_LTP_OVERRIDE), 865 SOM_HOWTO (0, R_COMMENT), 866 SOM_HOWTO (0, R_RESERVED), 867 SOM_HOWTO (0, R_RESERVED), 868 SOM_HOWTO (0, R_RESERVED), 869 SOM_HOWTO (0, R_RESERVED), 870 SOM_HOWTO (0, R_RESERVED), 871 SOM_HOWTO (0, R_RESERVED), 872 SOM_HOWTO (0, R_RESERVED), 873 SOM_HOWTO (0, R_RESERVED), 874 SOM_HOWTO (0, R_RESERVED), 875 SOM_HOWTO (0, R_RESERVED), 876 SOM_HOWTO (0, R_RESERVED), 877 SOM_HOWTO (0, R_RESERVED), 878 SOM_HOWTO (0, R_RESERVED), 879 SOM_HOWTO (0, R_RESERVED), 880 SOM_HOWTO (0, R_RESERVED), 881 SOM_HOWTO (0, R_RESERVED), 882 SOM_HOWTO (0, R_RESERVED), 883 SOM_HOWTO (0, R_RESERVED), 884 SOM_HOWTO (0, R_RESERVED), 885 SOM_HOWTO (0, R_RESERVED), 886 SOM_HOWTO (0, R_RESERVED), 887 SOM_HOWTO (0, R_RESERVED), 888 SOM_HOWTO (0, R_RESERVED), 889 SOM_HOWTO (0, R_RESERVED), 890 SOM_HOWTO (0, R_RESERVED), 891 SOM_HOWTO (0, R_RESERVED), 892 SOM_HOWTO (0, R_RESERVED), 893 SOM_HOWTO (0, R_RESERVED), 894 SOM_HOWTO (0, R_RESERVED), 895 SOM_HOWTO (0, R_RESERVED), 896 SOM_HOWTO (0, R_RESERVED), 897 SOM_HOWTO (0, R_RESERVED), 898 SOM_HOWTO (0, R_RESERVED), 899 SOM_HOWTO (0, R_RESERVED) 900 }; 901 902 /* Initialize the SOM relocation queue. By definition the queue holds 903 the last four multibyte fixups. */ 904 905 static void 906 som_initialize_reloc_queue (struct reloc_queue *queue) 907 { 908 queue[0].reloc = NULL; 909 queue[0].size = 0; 910 queue[1].reloc = NULL; 911 queue[1].size = 0; 912 queue[2].reloc = NULL; 913 queue[2].size = 0; 914 queue[3].reloc = NULL; 915 queue[3].size = 0; 916 } 917 918 /* Insert a new relocation into the relocation queue. */ 919 920 static void 921 som_reloc_queue_insert (unsigned char *p, 922 unsigned int size, 923 struct reloc_queue *queue) 924 { 925 queue[3].reloc = queue[2].reloc; 926 queue[3].size = queue[2].size; 927 queue[2].reloc = queue[1].reloc; 928 queue[2].size = queue[1].size; 929 queue[1].reloc = queue[0].reloc; 930 queue[1].size = queue[0].size; 931 queue[0].reloc = p; 932 queue[0].size = size; 933 } 934 935 /* When an entry in the relocation queue is reused, the entry moves 936 to the front of the queue. */ 937 938 static void 939 som_reloc_queue_fix (struct reloc_queue *queue, unsigned int idx) 940 { 941 if (idx == 0) 942 return; 943 944 if (idx == 1) 945 { 946 unsigned char *tmp1 = queue[0].reloc; 947 unsigned int tmp2 = queue[0].size; 948 949 queue[0].reloc = queue[1].reloc; 950 queue[0].size = queue[1].size; 951 queue[1].reloc = tmp1; 952 queue[1].size = tmp2; 953 return; 954 } 955 956 if (idx == 2) 957 { 958 unsigned char *tmp1 = queue[0].reloc; 959 unsigned int tmp2 = queue[0].size; 960 961 queue[0].reloc = queue[2].reloc; 962 queue[0].size = queue[2].size; 963 queue[2].reloc = queue[1].reloc; 964 queue[2].size = queue[1].size; 965 queue[1].reloc = tmp1; 966 queue[1].size = tmp2; 967 return; 968 } 969 970 if (idx == 3) 971 { 972 unsigned char *tmp1 = queue[0].reloc; 973 unsigned int tmp2 = queue[0].size; 974 975 queue[0].reloc = queue[3].reloc; 976 queue[0].size = queue[3].size; 977 queue[3].reloc = queue[2].reloc; 978 queue[3].size = queue[2].size; 979 queue[2].reloc = queue[1].reloc; 980 queue[2].size = queue[1].size; 981 queue[1].reloc = tmp1; 982 queue[1].size = tmp2; 983 return; 984 } 985 abort (); 986 } 987 988 /* Search for a particular relocation in the relocation queue. */ 989 990 static int 991 som_reloc_queue_find (unsigned char *p, 992 unsigned int size, 993 struct reloc_queue *queue) 994 { 995 if (queue[0].reloc && !memcmp (p, queue[0].reloc, size) 996 && size == queue[0].size) 997 return 0; 998 if (queue[1].reloc && !memcmp (p, queue[1].reloc, size) 999 && size == queue[1].size) 1000 return 1; 1001 if (queue[2].reloc && !memcmp (p, queue[2].reloc, size) 1002 && size == queue[2].size) 1003 return 2; 1004 if (queue[3].reloc && !memcmp (p, queue[3].reloc, size) 1005 && size == queue[3].size) 1006 return 3; 1007 return -1; 1008 } 1009 1010 static unsigned char * 1011 try_prev_fixup (bfd *abfd ATTRIBUTE_UNUSED, 1012 unsigned int *subspace_reloc_sizep, 1013 unsigned char *p, 1014 unsigned int size, 1015 struct reloc_queue *queue) 1016 { 1017 int queue_index = som_reloc_queue_find (p, size, queue); 1018 1019 if (queue_index != -1) 1020 { 1021 /* Found this in a previous fixup. Undo the fixup we 1022 just built and use R_PREV_FIXUP instead. We saved 1023 a total of size - 1 bytes in the fixup stream. */ 1024 bfd_put_8 (abfd, R_PREV_FIXUP + queue_index, p); 1025 p += 1; 1026 *subspace_reloc_sizep += 1; 1027 som_reloc_queue_fix (queue, queue_index); 1028 } 1029 else 1030 { 1031 som_reloc_queue_insert (p, size, queue); 1032 *subspace_reloc_sizep += size; 1033 p += size; 1034 } 1035 return p; 1036 } 1037 1038 /* Emit the proper R_NO_RELOCATION fixups to map the next SKIP 1039 bytes without any relocation. Update the size of the subspace 1040 relocation stream via SUBSPACE_RELOC_SIZE_P; also return the 1041 current pointer into the relocation stream. */ 1042 1043 static unsigned char * 1044 som_reloc_skip (bfd *abfd, 1045 unsigned int skip, 1046 unsigned char *p, 1047 unsigned int *subspace_reloc_sizep, 1048 struct reloc_queue *queue) 1049 { 1050 /* Use a 4 byte R_NO_RELOCATION entry with a maximal value 1051 then R_PREV_FIXUPs to get the difference down to a 1052 reasonable size. */ 1053 if (skip >= 0x1000000) 1054 { 1055 skip -= 0x1000000; 1056 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p); 1057 bfd_put_8 (abfd, 0xff, p + 1); 1058 bfd_put_16 (abfd, (bfd_vma) 0xffff, p + 2); 1059 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); 1060 while (skip >= 0x1000000) 1061 { 1062 skip -= 0x1000000; 1063 bfd_put_8 (abfd, R_PREV_FIXUP, p); 1064 p++; 1065 *subspace_reloc_sizep += 1; 1066 /* No need to adjust queue here since we are repeating the 1067 most recent fixup. */ 1068 } 1069 } 1070 1071 /* The difference must be less than 0x1000000. Use one 1072 more R_NO_RELOCATION entry to get to the right difference. */ 1073 if ((skip & 3) == 0 && skip <= 0xc0000 && skip > 0) 1074 { 1075 /* Difference can be handled in a simple single-byte 1076 R_NO_RELOCATION entry. */ 1077 if (skip <= 0x60) 1078 { 1079 bfd_put_8 (abfd, R_NO_RELOCATION + (skip >> 2) - 1, p); 1080 *subspace_reloc_sizep += 1; 1081 p++; 1082 } 1083 /* Handle it with a two byte R_NO_RELOCATION entry. */ 1084 else if (skip <= 0x1000) 1085 { 1086 bfd_put_8 (abfd, R_NO_RELOCATION + 24 + (((skip >> 2) - 1) >> 8), p); 1087 bfd_put_8 (abfd, (skip >> 2) - 1, p + 1); 1088 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); 1089 } 1090 /* Handle it with a three byte R_NO_RELOCATION entry. */ 1091 else 1092 { 1093 bfd_put_8 (abfd, R_NO_RELOCATION + 28 + (((skip >> 2) - 1) >> 16), p); 1094 bfd_put_16 (abfd, (bfd_vma) (skip >> 2) - 1, p + 1); 1095 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); 1096 } 1097 } 1098 /* Ugh. Punt and use a 4 byte entry. */ 1099 else if (skip > 0) 1100 { 1101 bfd_put_8 (abfd, R_NO_RELOCATION + 31, p); 1102 bfd_put_8 (abfd, (skip - 1) >> 16, p + 1); 1103 bfd_put_16 (abfd, (bfd_vma) skip - 1, p + 2); 1104 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); 1105 } 1106 return p; 1107 } 1108 1109 /* Emit the proper R_DATA_OVERRIDE fixups to handle a nonzero addend 1110 from a BFD relocation. Update the size of the subspace relocation 1111 stream via SUBSPACE_RELOC_SIZE_P; also return the current pointer 1112 into the relocation stream. */ 1113 1114 static unsigned char * 1115 som_reloc_addend (bfd *abfd, 1116 bfd_vma addend, 1117 unsigned char *p, 1118 unsigned int *subspace_reloc_sizep, 1119 struct reloc_queue *queue) 1120 { 1121 if (addend + 0x80 < 0x100) 1122 { 1123 bfd_put_8 (abfd, R_DATA_OVERRIDE + 1, p); 1124 bfd_put_8 (abfd, addend, p + 1); 1125 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); 1126 } 1127 else if (addend + 0x8000 < 0x10000) 1128 { 1129 bfd_put_8 (abfd, R_DATA_OVERRIDE + 2, p); 1130 bfd_put_16 (abfd, addend, p + 1); 1131 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); 1132 } 1133 else if (addend + 0x800000 < 0x1000000) 1134 { 1135 bfd_put_8 (abfd, R_DATA_OVERRIDE + 3, p); 1136 bfd_put_8 (abfd, addend >> 16, p + 1); 1137 bfd_put_16 (abfd, addend, p + 2); 1138 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); 1139 } 1140 else 1141 { 1142 bfd_put_8 (abfd, R_DATA_OVERRIDE + 4, p); 1143 bfd_put_32 (abfd, addend, p + 1); 1144 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue); 1145 } 1146 return p; 1147 } 1148 1149 /* Handle a single function call relocation. */ 1150 1151 static unsigned char * 1152 som_reloc_call (bfd *abfd, 1153 unsigned char *p, 1154 unsigned int *subspace_reloc_sizep, 1155 arelent *bfd_reloc, 1156 int sym_num, 1157 struct reloc_queue *queue) 1158 { 1159 int arg_bits = HPPA_R_ARG_RELOC (bfd_reloc->addend); 1160 int rtn_bits = arg_bits & 0x3; 1161 int type, done = 0; 1162 1163 /* You'll never believe all this is necessary to handle relocations 1164 for function calls. Having to compute and pack the argument 1165 relocation bits is the real nightmare. 1166 1167 If you're interested in how this works, just forget it. You really 1168 do not want to know about this braindamage. */ 1169 1170 /* First see if this can be done with a "simple" relocation. Simple 1171 relocations have a symbol number < 0x100 and have simple encodings 1172 of argument relocations. */ 1173 1174 if (sym_num < 0x100) 1175 { 1176 switch (arg_bits) 1177 { 1178 case 0: 1179 case 1: 1180 type = 0; 1181 break; 1182 case 1 << 8: 1183 case 1 << 8 | 1: 1184 type = 1; 1185 break; 1186 case 1 << 8 | 1 << 6: 1187 case 1 << 8 | 1 << 6 | 1: 1188 type = 2; 1189 break; 1190 case 1 << 8 | 1 << 6 | 1 << 4: 1191 case 1 << 8 | 1 << 6 | 1 << 4 | 1: 1192 type = 3; 1193 break; 1194 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2: 1195 case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2 | 1: 1196 type = 4; 1197 break; 1198 default: 1199 /* Not one of the easy encodings. This will have to be 1200 handled by the more complex code below. */ 1201 type = -1; 1202 break; 1203 } 1204 if (type != -1) 1205 { 1206 /* Account for the return value too. */ 1207 if (rtn_bits) 1208 type += 5; 1209 1210 /* Emit a 2 byte relocation. Then see if it can be handled 1211 with a relocation which is already in the relocation queue. */ 1212 bfd_put_8 (abfd, bfd_reloc->howto->type + type, p); 1213 bfd_put_8 (abfd, sym_num, p + 1); 1214 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); 1215 done = 1; 1216 } 1217 } 1218 1219 /* If this could not be handled with a simple relocation, then do a hard 1220 one. Hard relocations occur if the symbol number was too high or if 1221 the encoding of argument relocation bits is too complex. */ 1222 if (! done) 1223 { 1224 /* Don't ask about these magic sequences. I took them straight 1225 from gas-1.36 which took them from the a.out man page. */ 1226 type = rtn_bits; 1227 if ((arg_bits >> 6 & 0xf) == 0xe) 1228 type += 9 * 40; 1229 else 1230 type += (3 * (arg_bits >> 8 & 3) + (arg_bits >> 6 & 3)) * 40; 1231 if ((arg_bits >> 2 & 0xf) == 0xe) 1232 type += 9 * 4; 1233 else 1234 type += (3 * (arg_bits >> 4 & 3) + (arg_bits >> 2 & 3)) * 4; 1235 1236 /* Output the first two bytes of the relocation. These describe 1237 the length of the relocation and encoding style. */ 1238 bfd_put_8 (abfd, bfd_reloc->howto->type + 10 1239 + 2 * (sym_num >= 0x100) + (type >= 0x100), 1240 p); 1241 bfd_put_8 (abfd, type, p + 1); 1242 1243 /* Now output the symbol index and see if this bizarre relocation 1244 just happened to be in the relocation queue. */ 1245 if (sym_num < 0x100) 1246 { 1247 bfd_put_8 (abfd, sym_num, p + 2); 1248 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); 1249 } 1250 else 1251 { 1252 bfd_put_8 (abfd, sym_num >> 16, p + 2); 1253 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3); 1254 p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue); 1255 } 1256 } 1257 return p; 1258 } 1259 1260 /* Return the logarithm of X, base 2, considering X unsigned, 1261 if X is a power of 2. Otherwise, returns -1. */ 1262 1263 static int 1264 exact_log2 (unsigned int x) 1265 { 1266 int log = 0; 1267 1268 /* Test for 0 or a power of 2. */ 1269 if (x == 0 || x != (x & -x)) 1270 return -1; 1271 1272 while ((x >>= 1) != 0) 1273 log++; 1274 return log; 1275 } 1276 1277 static bfd_reloc_status_type 1278 hppa_som_reloc (bfd *abfd ATTRIBUTE_UNUSED, 1279 arelent *reloc_entry, 1280 asymbol *symbol_in ATTRIBUTE_UNUSED, 1281 void *data ATTRIBUTE_UNUSED, 1282 asection *input_section, 1283 bfd *output_bfd, 1284 char **error_message ATTRIBUTE_UNUSED) 1285 { 1286 if (output_bfd) 1287 reloc_entry->address += input_section->output_offset; 1288 1289 return bfd_reloc_ok; 1290 } 1291 1292 /* Given a generic HPPA relocation type, the instruction format, 1293 and a field selector, return one or more appropriate SOM relocations. */ 1294 1295 int ** 1296 hppa_som_gen_reloc_type (bfd *abfd, 1297 int base_type, 1298 int format, 1299 enum hppa_reloc_field_selector_type_alt field, 1300 int sym_diff, 1301 asymbol *sym) 1302 { 1303 int *final_type, **final_types; 1304 1305 final_types = bfd_alloc (abfd, (bfd_size_type) sizeof (int *) * 6); 1306 final_type = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1307 if (!final_types || !final_type) 1308 return NULL; 1309 1310 /* The field selector may require additional relocations to be 1311 generated. It's impossible to know at this moment if additional 1312 relocations will be needed, so we make them. The code to actually 1313 write the relocation/fixup stream is responsible for removing 1314 any redundant relocations. */ 1315 switch (field) 1316 { 1317 case e_fsel: 1318 case e_psel: 1319 case e_lpsel: 1320 case e_rpsel: 1321 final_types[0] = final_type; 1322 final_types[1] = NULL; 1323 final_types[2] = NULL; 1324 *final_type = base_type; 1325 break; 1326 1327 case e_tsel: 1328 case e_ltsel: 1329 case e_rtsel: 1330 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1331 if (!final_types[0]) 1332 return NULL; 1333 if (field == e_tsel) 1334 *final_types[0] = R_FSEL; 1335 else if (field == e_ltsel) 1336 *final_types[0] = R_LSEL; 1337 else 1338 *final_types[0] = R_RSEL; 1339 final_types[1] = final_type; 1340 final_types[2] = NULL; 1341 *final_type = base_type; 1342 break; 1343 1344 case e_lssel: 1345 case e_rssel: 1346 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1347 if (!final_types[0]) 1348 return NULL; 1349 *final_types[0] = R_S_MODE; 1350 final_types[1] = final_type; 1351 final_types[2] = NULL; 1352 *final_type = base_type; 1353 break; 1354 1355 case e_lsel: 1356 case e_rsel: 1357 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1358 if (!final_types[0]) 1359 return NULL; 1360 *final_types[0] = R_N_MODE; 1361 final_types[1] = final_type; 1362 final_types[2] = NULL; 1363 *final_type = base_type; 1364 break; 1365 1366 case e_ldsel: 1367 case e_rdsel: 1368 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1369 if (!final_types[0]) 1370 return NULL; 1371 *final_types[0] = R_D_MODE; 1372 final_types[1] = final_type; 1373 final_types[2] = NULL; 1374 *final_type = base_type; 1375 break; 1376 1377 case e_lrsel: 1378 case e_rrsel: 1379 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1380 if (!final_types[0]) 1381 return NULL; 1382 *final_types[0] = R_R_MODE; 1383 final_types[1] = final_type; 1384 final_types[2] = NULL; 1385 *final_type = base_type; 1386 break; 1387 1388 case e_nsel: 1389 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1390 if (!final_types[0]) 1391 return NULL; 1392 *final_types[0] = R_N1SEL; 1393 final_types[1] = final_type; 1394 final_types[2] = NULL; 1395 *final_type = base_type; 1396 break; 1397 1398 case e_nlsel: 1399 case e_nlrsel: 1400 final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1401 if (!final_types[0]) 1402 return NULL; 1403 *final_types[0] = R_N0SEL; 1404 final_types[1] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); 1405 if (!final_types[1]) 1406 return NULL; 1407 if (field == e_nlsel) 1408 *final_types[1] = R_N_MODE; 1409 else 1410 *final_types[1] = R_R_MODE; 1411 final_types[2] = final_type; 1412 final_types[3] = NULL; 1413 *final_type = base_type; 1414 break; 1415 1416 /* FIXME: These two field selectors are not currently supported. */ 1417 case e_ltpsel: 1418 case e_rtpsel: 1419 abort (); 1420 } 1421 1422 switch (base_type) 1423 { 1424 case R_HPPA: 1425 /* The difference of two symbols needs *very* special handling. */ 1426 if (sym_diff) 1427 { 1428 size_t amt = sizeof (int); 1429 1430 final_types[0] = bfd_alloc (abfd, amt); 1431 final_types[1] = bfd_alloc (abfd, amt); 1432 final_types[2] = bfd_alloc (abfd, amt); 1433 final_types[3] = bfd_alloc (abfd, amt); 1434 if (!final_types[0] || !final_types[1] || !final_types[2]) 1435 return NULL; 1436 if (field == e_fsel) 1437 *final_types[0] = R_FSEL; 1438 else if (field == e_rsel) 1439 *final_types[0] = R_RSEL; 1440 else if (field == e_lsel) 1441 *final_types[0] = R_LSEL; 1442 *final_types[1] = R_COMP2; 1443 *final_types[2] = R_COMP2; 1444 *final_types[3] = R_COMP1; 1445 final_types[4] = final_type; 1446 if (format == 32) 1447 *final_types[4] = R_DATA_EXPR; 1448 else 1449 *final_types[4] = R_CODE_EXPR; 1450 final_types[5] = NULL; 1451 break; 1452 } 1453 /* PLABELs get their own relocation type. */ 1454 else if (field == e_psel 1455 || field == e_lpsel 1456 || field == e_rpsel) 1457 { 1458 /* A PLABEL relocation that has a size of 32 bits must 1459 be a R_DATA_PLABEL. All others are R_CODE_PLABELs. */ 1460 if (format == 32) 1461 *final_type = R_DATA_PLABEL; 1462 else 1463 *final_type = R_CODE_PLABEL; 1464 } 1465 /* PIC stuff. */ 1466 else if (field == e_tsel 1467 || field == e_ltsel 1468 || field == e_rtsel) 1469 *final_type = R_DLT_REL; 1470 /* A relocation in the data space is always a full 32bits. */ 1471 else if (format == 32) 1472 { 1473 *final_type = R_DATA_ONE_SYMBOL; 1474 1475 /* If there's no SOM symbol type associated with this BFD 1476 symbol, then set the symbol type to ST_DATA. 1477 1478 Only do this if the type is going to default later when 1479 we write the object file. 1480 1481 This is done so that the linker never encounters an 1482 R_DATA_ONE_SYMBOL reloc involving an ST_CODE symbol. 1483 1484 This allows the compiler to generate exception handling 1485 tables. 1486 1487 Note that one day we may need to also emit BEGIN_BRTAB and 1488 END_BRTAB to prevent the linker from optimizing away insns 1489 in exception handling regions. */ 1490 if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN 1491 && (sym->flags & BSF_SECTION_SYM) == 0 1492 && (sym->flags & BSF_FUNCTION) == 0 1493 && ! bfd_is_com_section (sym->section)) 1494 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA; 1495 } 1496 break; 1497 1498 case R_HPPA_GOTOFF: 1499 /* More PLABEL special cases. */ 1500 if (field == e_psel 1501 || field == e_lpsel 1502 || field == e_rpsel) 1503 *final_type = R_DATA_PLABEL; 1504 else if (field == e_fsel && format == 32) 1505 *final_type = R_DATA_GPREL; 1506 break; 1507 1508 case R_HPPA_COMPLEX: 1509 /* The difference of two symbols needs *very* special handling. */ 1510 if (sym_diff) 1511 { 1512 size_t amt = sizeof (int); 1513 1514 final_types[0] = bfd_alloc (abfd, amt); 1515 final_types[1] = bfd_alloc (abfd, amt); 1516 final_types[2] = bfd_alloc (abfd, amt); 1517 final_types[3] = bfd_alloc (abfd, amt); 1518 if (!final_types[0] || !final_types[1] || !final_types[2]) 1519 return NULL; 1520 if (field == e_fsel) 1521 *final_types[0] = R_FSEL; 1522 else if (field == e_rsel) 1523 *final_types[0] = R_RSEL; 1524 else if (field == e_lsel) 1525 *final_types[0] = R_LSEL; 1526 *final_types[1] = R_COMP2; 1527 *final_types[2] = R_COMP2; 1528 *final_types[3] = R_COMP1; 1529 final_types[4] = final_type; 1530 if (format == 32) 1531 *final_types[4] = R_DATA_EXPR; 1532 else 1533 *final_types[4] = R_CODE_EXPR; 1534 final_types[5] = NULL; 1535 break; 1536 } 1537 else 1538 break; 1539 1540 case R_HPPA_NONE: 1541 case R_HPPA_ABS_CALL: 1542 /* Right now we can default all these. */ 1543 break; 1544 1545 case R_HPPA_PCREL_CALL: 1546 { 1547 #ifndef NO_PCREL_MODES 1548 /* If we have short and long pcrel modes, then generate the proper 1549 mode selector, then the pcrel relocation. Redundant selectors 1550 will be eliminated as the relocs are sized and emitted. */ 1551 size_t amt = sizeof (int); 1552 1553 final_types[0] = bfd_alloc (abfd, amt); 1554 if (!final_types[0]) 1555 return NULL; 1556 if (format == 17) 1557 *final_types[0] = R_SHORT_PCREL_MODE; 1558 else 1559 *final_types[0] = R_LONG_PCREL_MODE; 1560 final_types[1] = final_type; 1561 final_types[2] = NULL; 1562 *final_type = base_type; 1563 #endif 1564 break; 1565 } 1566 } 1567 return final_types; 1568 } 1569 1570 /* Return the address of the correct entry in the PA SOM relocation 1571 howto table. */ 1572 1573 static reloc_howto_type * 1574 som_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1575 bfd_reloc_code_real_type code) 1576 { 1577 if ((int) code < (int) R_NO_RELOCATION + 255) 1578 { 1579 BFD_ASSERT ((int) som_hppa_howto_table[(int) code].type == (int) code); 1580 return &som_hppa_howto_table[(int) code]; 1581 } 1582 1583 return NULL; 1584 } 1585 1586 static reloc_howto_type * 1587 som_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, 1588 const char *r_name) 1589 { 1590 unsigned int i; 1591 1592 for (i = 0; 1593 i < sizeof (som_hppa_howto_table) / sizeof (som_hppa_howto_table[0]); 1594 i++) 1595 if (som_hppa_howto_table[i].name != NULL 1596 && strcasecmp (som_hppa_howto_table[i].name, r_name) == 0) 1597 return &som_hppa_howto_table[i]; 1598 1599 return NULL; 1600 } 1601 1602 static void 1603 som_swap_clock_in (struct som_external_clock *src, 1604 struct som_clock *dst) 1605 { 1606 dst->secs = bfd_getb32 (src->secs); 1607 dst->nanosecs = bfd_getb32 (src->nanosecs); 1608 } 1609 1610 static void 1611 som_swap_clock_out (struct som_clock *src, 1612 struct som_external_clock *dst) 1613 { 1614 bfd_putb32 (src->secs, dst->secs); 1615 bfd_putb32 (src->nanosecs, dst->nanosecs); 1616 } 1617 1618 static void 1619 som_swap_header_in (struct som_external_header *src, 1620 struct som_header *dst) 1621 { 1622 dst->system_id = bfd_getb16 (src->system_id); 1623 dst->a_magic = bfd_getb16 (src->a_magic); 1624 dst->version_id = bfd_getb32 (src->version_id); 1625 som_swap_clock_in (&src->file_time, &dst->file_time); 1626 dst->entry_space = bfd_getb32 (src->entry_space); 1627 dst->entry_subspace = bfd_getb32 (src->entry_subspace); 1628 dst->entry_offset = bfd_getb32 (src->entry_offset); 1629 dst->aux_header_location = bfd_getb32 (src->aux_header_location); 1630 dst->aux_header_size = bfd_getb32 (src->aux_header_size); 1631 dst->som_length = bfd_getb32 (src->som_length); 1632 dst->presumed_dp = bfd_getb32 (src->presumed_dp); 1633 dst->space_location = bfd_getb32 (src->space_location); 1634 dst->space_total = bfd_getb32 (src->space_total); 1635 dst->subspace_location = bfd_getb32 (src->subspace_location); 1636 dst->subspace_total = bfd_getb32 (src->subspace_total); 1637 dst->loader_fixup_location = bfd_getb32 (src->loader_fixup_location); 1638 dst->loader_fixup_total = bfd_getb32 (src->loader_fixup_total); 1639 dst->space_strings_location = bfd_getb32 (src->space_strings_location); 1640 dst->space_strings_size = bfd_getb32 (src->space_strings_size); 1641 dst->init_array_location = bfd_getb32 (src->init_array_location); 1642 dst->init_array_total = bfd_getb32 (src->init_array_total); 1643 dst->compiler_location = bfd_getb32 (src->compiler_location); 1644 dst->compiler_total = bfd_getb32 (src->compiler_total); 1645 dst->symbol_location = bfd_getb32 (src->symbol_location); 1646 dst->symbol_total = bfd_getb32 (src->symbol_total); 1647 dst->fixup_request_location = bfd_getb32 (src->fixup_request_location); 1648 dst->fixup_request_total = bfd_getb32 (src->fixup_request_total); 1649 dst->symbol_strings_location = bfd_getb32 (src->symbol_strings_location); 1650 dst->symbol_strings_size = bfd_getb32 (src->symbol_strings_size); 1651 dst->unloadable_sp_location = bfd_getb32 (src->unloadable_sp_location); 1652 dst->unloadable_sp_size = bfd_getb32 (src->unloadable_sp_size); 1653 dst->checksum = bfd_getb32 (src->checksum); 1654 } 1655 1656 static void 1657 som_swap_header_out (struct som_header *src, 1658 struct som_external_header *dst) 1659 { 1660 bfd_putb16 (src->system_id, dst->system_id); 1661 bfd_putb16 (src->a_magic, dst->a_magic); 1662 bfd_putb32 (src->version_id, dst->version_id); 1663 som_swap_clock_out (&src->file_time, &dst->file_time); 1664 bfd_putb32 (src->entry_space, dst->entry_space); 1665 bfd_putb32 (src->entry_subspace, dst->entry_subspace); 1666 bfd_putb32 (src->entry_offset, dst->entry_offset); 1667 bfd_putb32 (src->aux_header_location, dst->aux_header_location); 1668 bfd_putb32 (src->aux_header_size, dst->aux_header_size); 1669 bfd_putb32 (src->som_length, dst->som_length); 1670 bfd_putb32 (src->presumed_dp, dst->presumed_dp); 1671 bfd_putb32 (src->space_location, dst->space_location); 1672 bfd_putb32 (src->space_total, dst->space_total); 1673 bfd_putb32 (src->subspace_location, dst->subspace_location); 1674 bfd_putb32 (src->subspace_total, dst->subspace_total); 1675 bfd_putb32 (src->loader_fixup_location, dst->loader_fixup_location); 1676 bfd_putb32 (src->loader_fixup_total, dst->loader_fixup_total); 1677 bfd_putb32 (src->space_strings_location, dst->space_strings_location); 1678 bfd_putb32 (src->space_strings_size, dst->space_strings_size); 1679 bfd_putb32 (src->init_array_location, dst->init_array_location); 1680 bfd_putb32 (src->init_array_total, dst->init_array_total); 1681 bfd_putb32 (src->compiler_location, dst->compiler_location); 1682 bfd_putb32 (src->compiler_total, dst->compiler_total); 1683 bfd_putb32 (src->symbol_location, dst->symbol_location); 1684 bfd_putb32 (src->symbol_total, dst->symbol_total); 1685 bfd_putb32 (src->fixup_request_location, dst->fixup_request_location); 1686 bfd_putb32 (src->fixup_request_total, dst->fixup_request_total); 1687 bfd_putb32 (src->symbol_strings_location, dst->symbol_strings_location); 1688 bfd_putb32 (src->symbol_strings_size, dst->symbol_strings_size); 1689 bfd_putb32 (src->unloadable_sp_location, dst->unloadable_sp_location); 1690 bfd_putb32 (src->unloadable_sp_size, dst->unloadable_sp_size); 1691 bfd_putb32 (src->checksum, dst->checksum); 1692 } 1693 1694 static void 1695 som_swap_space_dictionary_in (struct som_external_space_dictionary_record *src, 1696 struct som_space_dictionary_record *dst) 1697 { 1698 unsigned int flags; 1699 1700 dst->name = bfd_getb32 (src->name); 1701 flags = bfd_getb32 (src->flags); 1702 dst->is_loadable = (flags & SOM_SPACE_IS_LOADABLE) != 0; 1703 dst->is_defined = (flags & SOM_SPACE_IS_DEFINED) != 0; 1704 dst->is_private = (flags & SOM_SPACE_IS_PRIVATE) != 0; 1705 dst->has_intermediate_code = (flags & SOM_SPACE_HAS_INTERMEDIATE_CODE) != 0; 1706 dst->is_tspecific = (flags & SOM_SPACE_IS_TSPECIFIC) != 0; 1707 dst->reserved = 0; 1708 dst->sort_key = (flags >> SOM_SPACE_SORT_KEY_SH) & SOM_SPACE_SORT_KEY_MASK; 1709 dst->reserved2 = 0; 1710 dst->space_number = bfd_getb32 (src->space_number); 1711 dst->subspace_index = bfd_getb32 (src->subspace_index); 1712 dst->subspace_quantity = bfd_getb32 (src->subspace_quantity); 1713 dst->loader_fix_index = bfd_getb32 (src->loader_fix_index); 1714 dst->loader_fix_quantity = bfd_getb32 (src->loader_fix_quantity); 1715 dst->init_pointer_index = bfd_getb32 (src->init_pointer_index); 1716 dst->init_pointer_quantity = bfd_getb32 (src->init_pointer_quantity); 1717 } 1718 1719 static void 1720 som_swap_space_dictionary_out (struct som_space_dictionary_record *src, 1721 struct som_external_space_dictionary_record *dst) 1722 { 1723 unsigned int flags; 1724 1725 bfd_putb32 (src->name, dst->name); 1726 1727 flags = 0; 1728 if (src->is_loadable) 1729 flags |= SOM_SPACE_IS_LOADABLE; 1730 if (src->is_defined) 1731 flags |= SOM_SPACE_IS_DEFINED; 1732 if (src->is_private) 1733 flags |= SOM_SPACE_IS_PRIVATE; 1734 if (src->has_intermediate_code) 1735 flags |= SOM_SPACE_HAS_INTERMEDIATE_CODE; 1736 if (src->is_tspecific) 1737 flags |= SOM_SPACE_IS_TSPECIFIC; 1738 flags |= (src->sort_key & SOM_SPACE_SORT_KEY_MASK) << SOM_SPACE_SORT_KEY_SH; 1739 bfd_putb32 (flags, dst->flags); 1740 bfd_putb32 (src->space_number, dst->space_number); 1741 bfd_putb32 (src->subspace_index, dst->subspace_index); 1742 bfd_putb32 (src->subspace_quantity, dst->subspace_quantity); 1743 bfd_putb32 (src->loader_fix_index, dst->loader_fix_index); 1744 bfd_putb32 (src->loader_fix_quantity, dst->loader_fix_quantity); 1745 bfd_putb32 (src->init_pointer_index, dst->init_pointer_index); 1746 bfd_putb32 (src->init_pointer_quantity, dst->init_pointer_quantity); 1747 } 1748 1749 static void 1750 som_swap_subspace_dictionary_in 1751 (struct som_external_subspace_dictionary_record *src, 1752 struct som_subspace_dictionary_record *dst) 1753 { 1754 unsigned int flags; 1755 dst->space_index = bfd_getb32 (src->space_index); 1756 flags = bfd_getb32 (src->flags); 1757 dst->access_control_bits = (flags >> SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH) 1758 & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK; 1759 dst->memory_resident = (flags & SOM_SUBSPACE_MEMORY_RESIDENT) != 0; 1760 dst->dup_common = (flags & SOM_SUBSPACE_DUP_COMMON) != 0; 1761 dst->is_common = (flags & SOM_SUBSPACE_IS_COMMON) != 0; 1762 dst->is_loadable = (flags & SOM_SUBSPACE_IS_LOADABLE) != 0; 1763 dst->quadrant = (flags >> SOM_SUBSPACE_QUADRANT_SH) 1764 & SOM_SUBSPACE_QUADRANT_MASK; 1765 dst->initially_frozen = (flags & SOM_SUBSPACE_INITIALLY_FROZEN) != 0; 1766 dst->is_first = (flags & SOM_SUBSPACE_IS_FIRST) != 0; 1767 dst->code_only = (flags & SOM_SUBSPACE_CODE_ONLY) != 0; 1768 dst->sort_key = (flags >> SOM_SUBSPACE_SORT_KEY_SH) 1769 & SOM_SUBSPACE_SORT_KEY_MASK; 1770 dst->replicate_init = (flags & SOM_SUBSPACE_REPLICATE_INIT) != 0; 1771 dst->continuation = (flags & SOM_SUBSPACE_CONTINUATION) != 0; 1772 dst->is_tspecific = (flags & SOM_SUBSPACE_IS_TSPECIFIC) != 0; 1773 dst->is_comdat = (flags & SOM_SUBSPACE_IS_COMDAT) != 0; 1774 dst->reserved = 0; 1775 dst->file_loc_init_value = bfd_getb32 (src->file_loc_init_value); 1776 dst->initialization_length = bfd_getb32 (src->initialization_length); 1777 dst->subspace_start = bfd_getb32 (src->subspace_start); 1778 dst->subspace_length = bfd_getb32 (src->subspace_length); 1779 dst->alignment = bfd_getb32 (src->alignment); 1780 dst->name = bfd_getb32 (src->name); 1781 dst->fixup_request_index = bfd_getb32 (src->fixup_request_index); 1782 dst->fixup_request_quantity = bfd_getb32 (src->fixup_request_quantity); 1783 } 1784 1785 static void 1786 som_swap_subspace_dictionary_record_out 1787 (struct som_subspace_dictionary_record *src, 1788 struct som_external_subspace_dictionary_record *dst) 1789 { 1790 unsigned int flags; 1791 1792 bfd_putb32 (src->space_index, dst->space_index); 1793 flags = (src->access_control_bits & SOM_SUBSPACE_ACCESS_CONTROL_BITS_MASK) 1794 << SOM_SUBSPACE_ACCESS_CONTROL_BITS_SH; 1795 if (src->memory_resident) 1796 flags |= SOM_SUBSPACE_MEMORY_RESIDENT; 1797 if (src->dup_common) 1798 flags |= SOM_SUBSPACE_DUP_COMMON; 1799 if (src->is_common) 1800 flags |= SOM_SUBSPACE_IS_COMMON; 1801 if (src->is_loadable) 1802 flags |= SOM_SUBSPACE_IS_LOADABLE; 1803 flags |= (src->quadrant & SOM_SUBSPACE_QUADRANT_MASK) 1804 << SOM_SUBSPACE_QUADRANT_SH; 1805 if (src->initially_frozen) 1806 flags |= SOM_SUBSPACE_INITIALLY_FROZEN; 1807 if (src->is_first) 1808 flags |= SOM_SUBSPACE_IS_FIRST; 1809 if (src->code_only) 1810 flags |= SOM_SUBSPACE_CODE_ONLY; 1811 flags |= (src->sort_key & SOM_SUBSPACE_SORT_KEY_MASK) 1812 << SOM_SUBSPACE_SORT_KEY_SH; 1813 if (src->replicate_init) 1814 flags |= SOM_SUBSPACE_REPLICATE_INIT; 1815 if (src->continuation) 1816 flags |= SOM_SUBSPACE_CONTINUATION; 1817 if (src->is_tspecific) 1818 flags |= SOM_SUBSPACE_IS_TSPECIFIC; 1819 if (src->is_comdat) 1820 flags |= SOM_SUBSPACE_IS_COMDAT; 1821 bfd_putb32 (flags, dst->flags); 1822 bfd_putb32 (src->file_loc_init_value, dst->file_loc_init_value); 1823 bfd_putb32 (src->initialization_length, dst->initialization_length); 1824 bfd_putb32 (src->subspace_start, dst->subspace_start); 1825 bfd_putb32 (src->subspace_length, dst->subspace_length); 1826 bfd_putb32 (src->alignment, dst->alignment); 1827 bfd_putb32 (src->name, dst->name); 1828 bfd_putb32 (src->fixup_request_index, dst->fixup_request_index); 1829 bfd_putb32 (src->fixup_request_quantity, dst->fixup_request_quantity); 1830 } 1831 1832 static void 1833 som_swap_aux_id_in (struct som_external_aux_id *src, 1834 struct som_aux_id *dst) 1835 { 1836 unsigned int flags = bfd_getb32 (src->flags); 1837 1838 dst->mandatory = (flags & SOM_AUX_ID_MANDATORY) != 0; 1839 dst->copy = (flags & SOM_AUX_ID_COPY) != 0; 1840 dst->append = (flags & SOM_AUX_ID_APPEND) != 0; 1841 dst->ignore = (flags & SOM_AUX_ID_IGNORE) != 0; 1842 dst->type = (flags >> SOM_AUX_ID_TYPE_SH) & SOM_AUX_ID_TYPE_MASK; 1843 dst->length = bfd_getb32 (src->length); 1844 } 1845 1846 static void 1847 som_swap_aux_id_out (struct som_aux_id *src, 1848 struct som_external_aux_id *dst) 1849 { 1850 unsigned int flags = 0; 1851 1852 if (src->mandatory) 1853 flags |= SOM_AUX_ID_MANDATORY; 1854 if (src->copy) 1855 flags |= SOM_AUX_ID_COPY; 1856 if (src->append) 1857 flags |= SOM_AUX_ID_APPEND; 1858 if (src->ignore) 1859 flags |= SOM_AUX_ID_IGNORE; 1860 flags |= (src->type & SOM_AUX_ID_TYPE_MASK) << SOM_AUX_ID_TYPE_SH; 1861 bfd_putb32 (flags, dst->flags); 1862 bfd_putb32 (src->length, dst->length); 1863 } 1864 1865 static void 1866 som_swap_string_auxhdr_out (struct som_string_auxhdr *src, 1867 struct som_external_string_auxhdr *dst) 1868 { 1869 som_swap_aux_id_out (&src->header_id, &dst->header_id); 1870 bfd_putb32 (src->string_length, dst->string_length); 1871 } 1872 1873 static void 1874 som_swap_compilation_unit_out (struct som_compilation_unit *src, 1875 struct som_external_compilation_unit *dst) 1876 { 1877 bfd_putb32 (src->name.strx, dst->name); 1878 bfd_putb32 (src->language_name.strx, dst->language_name); 1879 bfd_putb32 (src->product_id.strx, dst->product_id); 1880 bfd_putb32 (src->version_id.strx, dst->version_id); 1881 bfd_putb32 (src->flags, dst->flags); 1882 som_swap_clock_out (&src->compile_time, &dst->compile_time); 1883 som_swap_clock_out (&src->source_time, &dst->source_time); 1884 } 1885 1886 static void 1887 som_swap_exec_auxhdr_in (struct som_external_exec_auxhdr *src, 1888 struct som_exec_auxhdr *dst) 1889 { 1890 som_swap_aux_id_in (&src->som_auxhdr, &dst->som_auxhdr); 1891 dst->exec_tsize = bfd_getb32 (src->exec_tsize); 1892 dst->exec_tmem = bfd_getb32 (src->exec_tmem); 1893 dst->exec_tfile = bfd_getb32 (src->exec_tfile); 1894 dst->exec_dsize = bfd_getb32 (src->exec_dsize); 1895 dst->exec_dmem = bfd_getb32 (src->exec_dmem); 1896 dst->exec_dfile = bfd_getb32 (src->exec_dfile); 1897 dst->exec_bsize = bfd_getb32 (src->exec_bsize); 1898 dst->exec_entry = bfd_getb32 (src->exec_entry); 1899 dst->exec_flags = bfd_getb32 (src->exec_flags); 1900 dst->exec_bfill = bfd_getb32 (src->exec_bfill); 1901 } 1902 1903 static void 1904 som_swap_exec_auxhdr_out (struct som_exec_auxhdr *src, 1905 struct som_external_exec_auxhdr *dst) 1906 { 1907 som_swap_aux_id_out (&src->som_auxhdr, &dst->som_auxhdr); 1908 bfd_putb32 (src->exec_tsize, dst->exec_tsize); 1909 bfd_putb32 (src->exec_tmem, dst->exec_tmem); 1910 bfd_putb32 (src->exec_tfile, dst->exec_tfile); 1911 bfd_putb32 (src->exec_dsize, dst->exec_dsize); 1912 bfd_putb32 (src->exec_dmem, dst->exec_dmem); 1913 bfd_putb32 (src->exec_dfile, dst->exec_dfile); 1914 bfd_putb32 (src->exec_bsize, dst->exec_bsize); 1915 bfd_putb32 (src->exec_entry, dst->exec_entry); 1916 bfd_putb32 (src->exec_flags, dst->exec_flags); 1917 bfd_putb32 (src->exec_bfill, dst->exec_bfill); 1918 } 1919 1920 static void 1921 som_swap_lst_header_in (struct som_external_lst_header *src, 1922 struct som_lst_header *dst) 1923 { 1924 dst->system_id = bfd_getb16 (src->system_id); 1925 dst->a_magic = bfd_getb16 (src->a_magic); 1926 dst->version_id = bfd_getb32 (src->version_id); 1927 som_swap_clock_in (&src->file_time, &dst->file_time); 1928 dst->hash_loc = bfd_getb32 (src->hash_loc); 1929 dst->hash_size = bfd_getb32 (src->hash_size); 1930 dst->module_count = bfd_getb32 (src->module_count); 1931 dst->module_limit = bfd_getb32 (src->module_limit); 1932 dst->dir_loc = bfd_getb32 (src->dir_loc); 1933 dst->export_loc = bfd_getb32 (src->export_loc); 1934 dst->export_count = bfd_getb32 (src->export_count); 1935 dst->import_loc = bfd_getb32 (src->import_loc); 1936 dst->aux_loc = bfd_getb32 (src->aux_loc); 1937 dst->aux_size = bfd_getb32 (src->aux_size); 1938 dst->string_loc = bfd_getb32 (src->string_loc); 1939 dst->string_size = bfd_getb32 (src->string_size); 1940 dst->free_list = bfd_getb32 (src->free_list); 1941 dst->file_end = bfd_getb32 (src->file_end); 1942 dst->checksum = bfd_getb32 (src->checksum); 1943 } 1944 1945 /* Perform some initialization for an object. Save results of this 1946 initialization in the BFD. */ 1947 1948 static bfd_cleanup 1949 som_object_setup (bfd *abfd, 1950 struct som_header *file_hdrp, 1951 struct som_exec_auxhdr *aux_hdrp, 1952 unsigned long current_offset) 1953 { 1954 asection *section; 1955 1956 /* som_mkobject will set bfd_error if som_mkobject fails. */ 1957 if (! som_mkobject (abfd)) 1958 return NULL; 1959 1960 /* Set BFD flags based on what information is available in the SOM. */ 1961 abfd->flags = BFD_NO_FLAGS; 1962 if (file_hdrp->symbol_total) 1963 abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; 1964 1965 switch (file_hdrp->a_magic) 1966 { 1967 case DEMAND_MAGIC: 1968 abfd->flags |= (D_PAGED | WP_TEXT | EXEC_P); 1969 break; 1970 case SHARE_MAGIC: 1971 abfd->flags |= (WP_TEXT | EXEC_P); 1972 break; 1973 case EXEC_MAGIC: 1974 abfd->flags |= (EXEC_P); 1975 break; 1976 case RELOC_MAGIC: 1977 abfd->flags |= HAS_RELOC; 1978 break; 1979 #ifdef SHL_MAGIC 1980 case SHL_MAGIC: 1981 #endif 1982 #ifdef DL_MAGIC 1983 case DL_MAGIC: 1984 #endif 1985 abfd->flags |= DYNAMIC; 1986 break; 1987 1988 default: 1989 break; 1990 } 1991 1992 /* Save the auxiliary header. */ 1993 obj_som_exec_hdr (abfd) = aux_hdrp; 1994 1995 /* Allocate space to hold the saved exec header information. */ 1996 obj_som_exec_data (abfd) = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_exec_data)); 1997 if (obj_som_exec_data (abfd) == NULL) 1998 return NULL; 1999 2000 /* The braindamaged OSF1 linker switched exec_flags and exec_entry! 2001 2002 We used to identify OSF1 binaries based on NEW_VERSION_ID, but 2003 apparently the latest HPUX linker is using NEW_VERSION_ID now. 2004 2005 It's about time, OSF has used the new id since at least 1992; 2006 HPUX didn't start till nearly 1995!. 2007 2008 The new approach examines the entry field for an executable. If 2009 it is not 4-byte aligned then it's not a proper code address and 2010 we guess it's really the executable flags. For a main program, 2011 we also consider zero to be indicative of a buggy linker, since 2012 that is not a valid entry point. The entry point for a shared 2013 library, however, can be zero so we do not consider that to be 2014 indicative of a buggy linker. */ 2015 if (aux_hdrp) 2016 { 2017 int found = 0; 2018 2019 for (section = abfd->sections; section; section = section->next) 2020 { 2021 bfd_vma entry; 2022 2023 if ((section->flags & SEC_CODE) == 0) 2024 continue; 2025 entry = aux_hdrp->exec_entry + aux_hdrp->exec_tmem; 2026 if (entry >= section->vma 2027 && entry < section->vma + section->size) 2028 found = 1; 2029 } 2030 if ((aux_hdrp->exec_entry == 0 && !(abfd->flags & DYNAMIC)) 2031 || (aux_hdrp->exec_entry & 0x3) != 0 2032 || ! found) 2033 { 2034 abfd->start_address = aux_hdrp->exec_flags; 2035 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_entry; 2036 } 2037 else 2038 { 2039 abfd->start_address = aux_hdrp->exec_entry + current_offset; 2040 obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_flags; 2041 } 2042 } 2043 2044 obj_som_exec_data (abfd)->version_id = file_hdrp->version_id; 2045 2046 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, pa10); 2047 abfd->symcount = file_hdrp->symbol_total; 2048 2049 /* Initialize the saved symbol table and string table to NULL. 2050 Save important offsets and sizes from the SOM header into 2051 the BFD. */ 2052 obj_som_stringtab (abfd) = NULL; 2053 obj_som_symtab (abfd) = NULL; 2054 obj_som_sorted_syms (abfd) = NULL; 2055 obj_som_stringtab_size (abfd) = file_hdrp->symbol_strings_size; 2056 obj_som_sym_filepos (abfd) = file_hdrp->symbol_location + current_offset; 2057 obj_som_str_filepos (abfd) = (file_hdrp->symbol_strings_location 2058 + current_offset); 2059 obj_som_reloc_filepos (abfd) = (file_hdrp->fixup_request_location 2060 + current_offset); 2061 obj_som_exec_data (abfd)->system_id = file_hdrp->system_id; 2062 2063 return _bfd_no_cleanup; 2064 } 2065 2066 /* Convert all of the space and subspace info into BFD sections. Each space 2067 contains a number of subspaces, which in turn describe the mapping between 2068 regions of the exec file, and the address space that the program runs in. 2069 BFD sections which correspond to spaces will overlap the sections for the 2070 associated subspaces. */ 2071 2072 static bool 2073 setup_sections (bfd *abfd, 2074 struct som_header *file_hdr, 2075 unsigned long current_offset) 2076 { 2077 char *space_strings = NULL; 2078 unsigned int space_index, i; 2079 unsigned int total_subspaces = 0; 2080 asection **subspace_sections = NULL; 2081 asection *section; 2082 size_t amt; 2083 2084 /* First, read in space names. */ 2085 amt = file_hdr->space_strings_size; 2086 if (amt == (size_t) -1) 2087 { 2088 bfd_set_error (bfd_error_no_memory); 2089 goto error_return; 2090 } 2091 if (bfd_seek (abfd, current_offset + file_hdr->space_strings_location, 2092 SEEK_SET) != 0) 2093 goto error_return; 2094 space_strings = (char *) _bfd_malloc_and_read (abfd, amt + 1, amt); 2095 if (space_strings == NULL) 2096 goto error_return; 2097 /* Make sure that the string table is NUL terminated. */ 2098 space_strings[amt] = 0; 2099 2100 /* Loop over all of the space dictionaries, building up sections. */ 2101 for (space_index = 0; space_index < file_hdr->space_total; space_index++) 2102 { 2103 struct som_space_dictionary_record space; 2104 struct som_external_space_dictionary_record ext_space; 2105 char *space_name; 2106 struct som_external_subspace_dictionary_record ext_subspace; 2107 struct som_subspace_dictionary_record subspace, save_subspace; 2108 unsigned int subspace_index; 2109 asection *space_asect; 2110 bfd_size_type space_size = 0; 2111 char *newname; 2112 2113 /* Read the space dictionary element. */ 2114 if (bfd_seek (abfd, 2115 (current_offset + file_hdr->space_location 2116 + space_index * sizeof (ext_space)), 2117 SEEK_SET) != 0) 2118 goto error_return; 2119 amt = sizeof ext_space; 2120 if (bfd_read (&ext_space, amt, abfd) != amt) 2121 goto error_return; 2122 2123 som_swap_space_dictionary_in (&ext_space, &space); 2124 2125 /* Setup the space name string. */ 2126 if (space.name >= file_hdr->space_strings_size) 2127 goto error_return; 2128 2129 space_name = space.name + space_strings; 2130 2131 /* Make a section out of it. */ 2132 amt = strlen (space_name) + 1; 2133 newname = bfd_alloc (abfd, amt); 2134 if (!newname) 2135 goto error_return; 2136 strcpy (newname, space_name); 2137 2138 space_asect = bfd_make_section_anyway (abfd, newname); 2139 if (!space_asect) 2140 goto error_return; 2141 2142 if (space.is_loadable == 0) 2143 space_asect->flags |= SEC_DEBUGGING; 2144 2145 /* Set up all the attributes for the space. */ 2146 if (! bfd_som_set_section_attributes (space_asect, space.is_defined, 2147 space.is_private, space.sort_key, 2148 space.space_number)) 2149 goto error_return; 2150 2151 /* If the space has no subspaces, then we're done. */ 2152 if (space.subspace_quantity == 0) 2153 continue; 2154 2155 /* Now, read in the first subspace for this space. */ 2156 if (bfd_seek (abfd, 2157 (current_offset + file_hdr->subspace_location 2158 + space.subspace_index * sizeof ext_subspace), 2159 SEEK_SET) != 0) 2160 goto error_return; 2161 amt = sizeof ext_subspace; 2162 if (bfd_read (&ext_subspace, amt, abfd) != amt) 2163 goto error_return; 2164 /* Seek back to the start of the subspaces for loop below. */ 2165 if (bfd_seek (abfd, 2166 (current_offset + file_hdr->subspace_location 2167 + space.subspace_index * sizeof ext_subspace), 2168 SEEK_SET) != 0) 2169 goto error_return; 2170 2171 som_swap_subspace_dictionary_in (&ext_subspace, &subspace); 2172 2173 /* Setup the start address and file loc from the first subspace 2174 record. */ 2175 space_asect->vma = subspace.subspace_start; 2176 space_asect->filepos = subspace.file_loc_init_value + current_offset; 2177 space_asect->alignment_power = exact_log2 (subspace.alignment); 2178 if (space_asect->alignment_power == (unsigned) -1) 2179 goto error_return; 2180 2181 /* Initialize save_subspace so we can reliably determine if this 2182 loop placed any useful values into it. */ 2183 memset (&save_subspace, 0, sizeof (save_subspace)); 2184 2185 /* Loop over the rest of the subspaces, building up more sections. */ 2186 for (subspace_index = 0; subspace_index < space.subspace_quantity; 2187 subspace_index++) 2188 { 2189 asection *subspace_asect; 2190 char *subspace_name; 2191 2192 /* Read in the next subspace. */ 2193 amt = sizeof ext_subspace; 2194 if (bfd_read (&ext_subspace, amt, abfd) != amt) 2195 goto error_return; 2196 2197 som_swap_subspace_dictionary_in (&ext_subspace, &subspace); 2198 2199 /* Setup the subspace name string. */ 2200 if (subspace.name >= file_hdr->space_strings_size) 2201 goto error_return; 2202 2203 subspace_name = subspace.name + space_strings; 2204 2205 amt = strlen (subspace_name) + 1; 2206 newname = bfd_alloc (abfd, amt); 2207 if (!newname) 2208 goto error_return; 2209 strcpy (newname, subspace_name); 2210 2211 /* Make a section out of this subspace. */ 2212 subspace_asect = bfd_make_section_anyway (abfd, newname); 2213 if (!subspace_asect) 2214 goto error_return; 2215 2216 /* Store private information about the section. */ 2217 if (! bfd_som_set_subsection_attributes (subspace_asect, space_asect, 2218 subspace.access_control_bits, 2219 subspace.sort_key, 2220 subspace.quadrant, 2221 subspace.is_comdat, 2222 subspace.is_common, 2223 subspace.dup_common)) 2224 goto error_return; 2225 2226 /* Keep an easy mapping between subspaces and sections. 2227 Note we do not necessarily read the subspaces in the 2228 same order in which they appear in the object file. 2229 2230 So to make the target index come out correctly, we 2231 store the location of the subspace header in target 2232 index, then sort using the location of the subspace 2233 header as the key. Then we can assign correct 2234 subspace indices. */ 2235 total_subspaces++; 2236 subspace_asect->target_index = bfd_tell (abfd) - sizeof (subspace); 2237 2238 /* Set SEC_READONLY and SEC_CODE/SEC_DATA as specified 2239 by the access_control_bits in the subspace header. */ 2240 switch (subspace.access_control_bits >> 4) 2241 { 2242 /* Readonly data. */ 2243 case 0x0: 2244 subspace_asect->flags |= SEC_DATA | SEC_READONLY; 2245 break; 2246 2247 /* Normal data. */ 2248 case 0x1: 2249 subspace_asect->flags |= SEC_DATA; 2250 break; 2251 2252 /* Readonly code and the gateways. 2253 Gateways have other attributes which do not map 2254 into anything BFD knows about. */ 2255 case 0x2: 2256 case 0x4: 2257 case 0x5: 2258 case 0x6: 2259 case 0x7: 2260 subspace_asect->flags |= SEC_CODE | SEC_READONLY; 2261 break; 2262 2263 /* dynamic (writable) code. */ 2264 case 0x3: 2265 subspace_asect->flags |= SEC_CODE; 2266 break; 2267 } 2268 2269 if (subspace.is_comdat || subspace.is_common || subspace.dup_common) 2270 subspace_asect->flags |= SEC_LINK_ONCE; 2271 2272 if (subspace.subspace_length > 0) 2273 subspace_asect->flags |= SEC_HAS_CONTENTS; 2274 2275 if (subspace.is_loadable) 2276 subspace_asect->flags |= SEC_ALLOC | SEC_LOAD; 2277 else 2278 subspace_asect->flags |= SEC_DEBUGGING; 2279 2280 if (subspace.code_only) 2281 subspace_asect->flags |= SEC_CODE; 2282 2283 /* Both file_loc_init_value and initialization_length will 2284 be zero for a BSS like subspace. */ 2285 if (subspace.file_loc_init_value == 0 2286 && subspace.initialization_length == 0) 2287 subspace_asect->flags &= ~(SEC_DATA | SEC_LOAD | SEC_HAS_CONTENTS); 2288 2289 /* This subspace has relocations. 2290 The fixup_request_quantity is a byte count for the number of 2291 entries in the relocation stream; it is not the actual number 2292 of relocations in the subspace. */ 2293 if (subspace.fixup_request_quantity != 0) 2294 { 2295 subspace_asect->flags |= SEC_RELOC; 2296 subspace_asect->rel_filepos = subspace.fixup_request_index; 2297 som_section_data (subspace_asect)->reloc_size 2298 = subspace.fixup_request_quantity; 2299 /* We can not determine this yet. When we read in the 2300 relocation table the correct value will be filled in. */ 2301 subspace_asect->reloc_count = (unsigned) -1; 2302 } 2303 2304 /* Update save_subspace if appropriate. */ 2305 if (subspace.file_loc_init_value > save_subspace.file_loc_init_value) 2306 save_subspace = subspace; 2307 2308 subspace_asect->vma = subspace.subspace_start; 2309 subspace_asect->size = subspace.subspace_length; 2310 subspace_asect->filepos = (subspace.file_loc_init_value 2311 + current_offset); 2312 subspace_asect->alignment_power = exact_log2 (subspace.alignment); 2313 if (subspace_asect->alignment_power == (unsigned) -1) 2314 goto error_return; 2315 2316 /* Keep track of the accumulated sizes of the sections. */ 2317 space_size += subspace.subspace_length; 2318 } 2319 2320 /* This can happen for a .o which defines symbols in otherwise 2321 empty subspaces. */ 2322 if (!save_subspace.file_loc_init_value) 2323 space_asect->size = 0; 2324 else 2325 { 2326 if (file_hdr->a_magic != RELOC_MAGIC) 2327 { 2328 /* Setup the size for the space section based upon the info 2329 in the last subspace of the space. */ 2330 space_asect->size = (save_subspace.subspace_start 2331 - space_asect->vma 2332 + save_subspace.subspace_length); 2333 } 2334 else 2335 { 2336 /* The subspace_start field is not initialised in relocatable 2337 only objects, so it cannot be used for length calculations. 2338 Instead we use the space_size value which we have been 2339 accumulating. This isn't an accurate estimate since it 2340 ignores alignment and ordering issues. */ 2341 space_asect->size = space_size; 2342 } 2343 } 2344 } 2345 /* Now that we've read in all the subspace records, we need to assign 2346 a target index to each subspace. */ 2347 if (_bfd_mul_overflow (total_subspaces, sizeof (asection *), &amt)) 2348 { 2349 bfd_set_error (bfd_error_file_too_big); 2350 goto error_return; 2351 } 2352 subspace_sections = bfd_malloc (amt); 2353 if (subspace_sections == NULL) 2354 goto error_return; 2355 2356 for (i = 0, section = abfd->sections; section; section = section->next) 2357 { 2358 if (!som_is_subspace (section)) 2359 continue; 2360 2361 subspace_sections[i] = section; 2362 i++; 2363 } 2364 qsort (subspace_sections, total_subspaces, 2365 sizeof (asection *), compare_subspaces); 2366 2367 /* subspace_sections is now sorted in the order in which the subspaces 2368 appear in the object file. Assign an index to each one now. */ 2369 for (i = 0; i < total_subspaces; i++) 2370 subspace_sections[i]->target_index = i; 2371 2372 free (space_strings); 2373 free (subspace_sections); 2374 return true; 2375 2376 error_return: 2377 free (space_strings); 2378 free (subspace_sections); 2379 return false; 2380 } 2381 2382 2383 /* Read in a SOM object and make it into a BFD. */ 2384 2385 static bfd_cleanup 2386 som_object_p (bfd *abfd) 2387 { 2388 struct som_external_header ext_file_hdr; 2389 struct som_header file_hdr; 2390 struct som_exec_auxhdr *aux_hdr_ptr = NULL; 2391 unsigned long current_offset = 0; 2392 struct som_external_lst_header ext_lst_header; 2393 struct som_external_som_entry ext_som_entry; 2394 size_t amt; 2395 unsigned int loc; 2396 #define ENTRY_SIZE sizeof (struct som_external_som_entry) 2397 2398 amt = sizeof (struct som_external_header); 2399 if (bfd_read (&ext_file_hdr, amt, abfd) != amt) 2400 { 2401 if (bfd_get_error () != bfd_error_system_call) 2402 bfd_set_error (bfd_error_wrong_format); 2403 return NULL; 2404 } 2405 2406 som_swap_header_in (&ext_file_hdr, &file_hdr); 2407 2408 if (!_PA_RISC_ID (file_hdr.system_id)) 2409 { 2410 bfd_set_error (bfd_error_wrong_format); 2411 return NULL; 2412 } 2413 2414 switch (file_hdr.a_magic) 2415 { 2416 case RELOC_MAGIC: 2417 case EXEC_MAGIC: 2418 case SHARE_MAGIC: 2419 case DEMAND_MAGIC: 2420 case DL_MAGIC: 2421 case SHL_MAGIC: 2422 #ifdef SHARED_MAGIC_CNX 2423 case SHARED_MAGIC_CNX: 2424 #endif 2425 break; 2426 2427 case EXECLIBMAGIC: 2428 /* Read the lst header and determine where the SOM directory begins. */ 2429 2430 if (bfd_seek (abfd, 0, SEEK_SET) != 0) 2431 { 2432 if (bfd_get_error () != bfd_error_system_call) 2433 bfd_set_error (bfd_error_wrong_format); 2434 return NULL; 2435 } 2436 2437 amt = sizeof (struct som_external_lst_header); 2438 if (bfd_read (&ext_lst_header, amt, abfd) != amt) 2439 { 2440 if (bfd_get_error () != bfd_error_system_call) 2441 bfd_set_error (bfd_error_wrong_format); 2442 return NULL; 2443 } 2444 2445 /* Position to and read the first directory entry. */ 2446 loc = bfd_getb32 (ext_lst_header.dir_loc); 2447 if (bfd_seek (abfd, loc, SEEK_SET) != 0) 2448 { 2449 if (bfd_get_error () != bfd_error_system_call) 2450 bfd_set_error (bfd_error_wrong_format); 2451 return NULL; 2452 } 2453 2454 amt = ENTRY_SIZE; 2455 if (bfd_read (&ext_som_entry, amt, abfd) != amt) 2456 { 2457 if (bfd_get_error () != bfd_error_system_call) 2458 bfd_set_error (bfd_error_wrong_format); 2459 return NULL; 2460 } 2461 2462 /* Now position to the first SOM. */ 2463 current_offset = bfd_getb32 (ext_som_entry.location); 2464 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0) 2465 { 2466 if (bfd_get_error () != bfd_error_system_call) 2467 bfd_set_error (bfd_error_wrong_format); 2468 return NULL; 2469 } 2470 2471 /* And finally, re-read the som header. */ 2472 amt = sizeof (struct som_external_header); 2473 if (bfd_read (&ext_file_hdr, amt, abfd) != amt) 2474 { 2475 if (bfd_get_error () != bfd_error_system_call) 2476 bfd_set_error (bfd_error_wrong_format); 2477 return NULL; 2478 } 2479 2480 som_swap_header_in (&ext_file_hdr, &file_hdr); 2481 2482 break; 2483 2484 default: 2485 bfd_set_error (bfd_error_wrong_format); 2486 return NULL; 2487 } 2488 2489 if (file_hdr.version_id != OLD_VERSION_ID 2490 && file_hdr.version_id != NEW_VERSION_ID) 2491 { 2492 bfd_set_error (bfd_error_wrong_format); 2493 return NULL; 2494 } 2495 2496 /* If the aux_header_size field in the file header is zero, then this 2497 object is an incomplete executable (a .o file). Do not try to read 2498 a non-existant auxiliary header. */ 2499 if (file_hdr.aux_header_size != 0) 2500 { 2501 struct som_external_exec_auxhdr ext_exec_auxhdr; 2502 2503 aux_hdr_ptr = bfd_zalloc (abfd, 2504 (bfd_size_type) sizeof (*aux_hdr_ptr)); 2505 if (aux_hdr_ptr == NULL) 2506 return NULL; 2507 amt = sizeof (struct som_external_exec_auxhdr); 2508 if (bfd_read (&ext_exec_auxhdr, amt, abfd) != amt) 2509 { 2510 if (bfd_get_error () != bfd_error_system_call) 2511 bfd_set_error (bfd_error_wrong_format); 2512 return NULL; 2513 } 2514 som_swap_exec_auxhdr_in (&ext_exec_auxhdr, aux_hdr_ptr); 2515 } 2516 2517 if (!setup_sections (abfd, &file_hdr, current_offset)) 2518 { 2519 /* setup_sections does not bubble up a bfd error code. */ 2520 bfd_set_error (bfd_error_bad_value); 2521 return NULL; 2522 } 2523 2524 /* This appears to be a valid SOM object. Do some initialization. */ 2525 return som_object_setup (abfd, &file_hdr, aux_hdr_ptr, current_offset); 2526 } 2527 2528 /* Create a SOM object. */ 2529 2530 static bool 2531 som_mkobject (bfd *abfd) 2532 { 2533 /* Allocate memory to hold backend information. */ 2534 abfd->tdata.som_data = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_data_struct)); 2535 if (abfd->tdata.som_data == NULL) 2536 return false; 2537 return true; 2538 } 2539 2540 /* Initialize some information in the file header. This routine makes 2541 not attempt at doing the right thing for a full executable; it 2542 is only meant to handle relocatable objects. */ 2543 2544 static bool 2545 som_prep_headers (bfd *abfd) 2546 { 2547 struct som_header *file_hdr; 2548 asection *section; 2549 size_t amt = sizeof (struct som_header); 2550 2551 /* Make and attach a file header to the BFD. */ 2552 file_hdr = bfd_zalloc (abfd, amt); 2553 if (file_hdr == NULL) 2554 return false; 2555 obj_som_file_hdr (abfd) = file_hdr; 2556 2557 if (abfd->flags & (EXEC_P | DYNAMIC)) 2558 { 2559 /* Make and attach an exec header to the BFD. */ 2560 amt = sizeof (struct som_exec_auxhdr); 2561 obj_som_exec_hdr (abfd) = bfd_zalloc (abfd, amt); 2562 if (obj_som_exec_hdr (abfd) == NULL) 2563 return false; 2564 2565 if (abfd->flags & D_PAGED) 2566 file_hdr->a_magic = DEMAND_MAGIC; 2567 else if (abfd->flags & WP_TEXT) 2568 file_hdr->a_magic = SHARE_MAGIC; 2569 #ifdef SHL_MAGIC 2570 else if (abfd->flags & DYNAMIC) 2571 file_hdr->a_magic = SHL_MAGIC; 2572 #endif 2573 else 2574 file_hdr->a_magic = EXEC_MAGIC; 2575 } 2576 else 2577 file_hdr->a_magic = RELOC_MAGIC; 2578 2579 /* These fields are optional, and embedding timestamps is not always 2580 a wise thing to do, it makes comparing objects during a multi-stage 2581 bootstrap difficult. */ 2582 file_hdr->file_time.secs = 0; 2583 file_hdr->file_time.nanosecs = 0; 2584 2585 file_hdr->entry_space = 0; 2586 file_hdr->entry_subspace = 0; 2587 file_hdr->entry_offset = 0; 2588 file_hdr->presumed_dp = 0; 2589 2590 /* Now iterate over the sections translating information from 2591 BFD sections to SOM spaces/subspaces. */ 2592 for (section = abfd->sections; section != NULL; section = section->next) 2593 { 2594 /* Ignore anything which has not been marked as a space or 2595 subspace. */ 2596 if (!som_is_space (section) && !som_is_subspace (section)) 2597 continue; 2598 2599 if (som_is_space (section)) 2600 { 2601 /* Allocate space for the space dictionary. */ 2602 amt = sizeof (struct som_space_dictionary_record); 2603 som_section_data (section)->space_dict = bfd_zalloc (abfd, amt); 2604 if (som_section_data (section)->space_dict == NULL) 2605 return false; 2606 /* Set space attributes. Note most attributes of SOM spaces 2607 are set based on the subspaces it contains. */ 2608 som_section_data (section)->space_dict->loader_fix_index = -1; 2609 som_section_data (section)->space_dict->init_pointer_index = -1; 2610 2611 /* Set more attributes that were stuffed away in private data. */ 2612 som_section_data (section)->space_dict->sort_key = 2613 som_section_data (section)->copy_data->sort_key; 2614 som_section_data (section)->space_dict->is_defined = 2615 som_section_data (section)->copy_data->is_defined; 2616 som_section_data (section)->space_dict->is_private = 2617 som_section_data (section)->copy_data->is_private; 2618 som_section_data (section)->space_dict->space_number = 2619 som_section_data (section)->copy_data->space_number; 2620 } 2621 else 2622 { 2623 /* Allocate space for the subspace dictionary. */ 2624 amt = sizeof (struct som_subspace_dictionary_record); 2625 som_section_data (section)->subspace_dict = bfd_zalloc (abfd, amt); 2626 if (som_section_data (section)->subspace_dict == NULL) 2627 return false; 2628 2629 /* Set subspace attributes. Basic stuff is done here, additional 2630 attributes are filled in later as more information becomes 2631 available. */ 2632 if (section->flags & SEC_ALLOC) 2633 som_section_data (section)->subspace_dict->is_loadable = 1; 2634 2635 if (section->flags & SEC_CODE) 2636 som_section_data (section)->subspace_dict->code_only = 1; 2637 2638 som_section_data (section)->subspace_dict->subspace_start = 2639 section->vma; 2640 som_section_data (section)->subspace_dict->subspace_length = 2641 section->size; 2642 som_section_data (section)->subspace_dict->initialization_length = 2643 section->size; 2644 som_section_data (section)->subspace_dict->alignment = 2645 1 << section->alignment_power; 2646 2647 /* Set more attributes that were stuffed away in private data. */ 2648 som_section_data (section)->subspace_dict->sort_key = 2649 som_section_data (section)->copy_data->sort_key; 2650 som_section_data (section)->subspace_dict->access_control_bits = 2651 som_section_data (section)->copy_data->access_control_bits; 2652 som_section_data (section)->subspace_dict->quadrant = 2653 som_section_data (section)->copy_data->quadrant; 2654 som_section_data (section)->subspace_dict->is_comdat = 2655 som_section_data (section)->copy_data->is_comdat; 2656 som_section_data (section)->subspace_dict->is_common = 2657 som_section_data (section)->copy_data->is_common; 2658 som_section_data (section)->subspace_dict->dup_common = 2659 som_section_data (section)->copy_data->dup_common; 2660 } 2661 } 2662 return true; 2663 } 2664 2665 /* Return TRUE if the given section is a SOM space, FALSE otherwise. */ 2666 2667 static bool 2668 som_is_space (asection *section) 2669 { 2670 /* If no copy data is available, then it's neither a space nor a 2671 subspace. */ 2672 if (som_section_data (section)->copy_data == NULL) 2673 return false; 2674 2675 /* If the containing space isn't the same as the given section, 2676 then this isn't a space. */ 2677 if (som_section_data (section)->copy_data->container != section 2678 && (som_section_data (section)->copy_data->container->output_section 2679 != section)) 2680 return false; 2681 2682 /* OK. Must be a space. */ 2683 return true; 2684 } 2685 2686 /* Return TRUE if the given section is a SOM subspace, FALSE otherwise. */ 2687 2688 static bool 2689 som_is_subspace (asection *section) 2690 { 2691 /* If no copy data is available, then it's neither a space nor a 2692 subspace. */ 2693 if (som_section_data (section)->copy_data == NULL) 2694 return false; 2695 2696 /* If the containing space is the same as the given section, 2697 then this isn't a subspace. */ 2698 if (som_section_data (section)->copy_data->container == section 2699 || (som_section_data (section)->copy_data->container->output_section 2700 == section)) 2701 return false; 2702 2703 /* OK. Must be a subspace. */ 2704 return true; 2705 } 2706 2707 /* Return TRUE if the given space contains the given subspace. It 2708 is safe to assume space really is a space, and subspace really 2709 is a subspace. */ 2710 2711 static bool 2712 som_is_container (asection *space, asection *subspace) 2713 { 2714 return (som_section_data (subspace)->copy_data->container == space) 2715 || (som_section_data (subspace)->copy_data->container->output_section 2716 == space); 2717 } 2718 2719 /* Count and return the number of spaces attached to the given BFD. */ 2720 2721 static unsigned long 2722 som_count_spaces (bfd *abfd) 2723 { 2724 int count = 0; 2725 asection *section; 2726 2727 for (section = abfd->sections; section != NULL; section = section->next) 2728 count += som_is_space (section); 2729 2730 return count; 2731 } 2732 2733 /* Count the number of subspaces attached to the given BFD. */ 2734 2735 static unsigned long 2736 som_count_subspaces (bfd *abfd) 2737 { 2738 int count = 0; 2739 asection *section; 2740 2741 for (section = abfd->sections; section != NULL; section = section->next) 2742 count += som_is_subspace (section); 2743 2744 return count; 2745 } 2746 2747 /* Return -1, 0, 1 indicating the relative ordering of sym1 and sym2. 2748 2749 We desire symbols to be ordered starting with the symbol with the 2750 highest relocation count down to the symbol with the lowest relocation 2751 count. Doing so compacts the relocation stream. */ 2752 2753 static int 2754 compare_syms (const void *arg1, const void *arg2) 2755 { 2756 asymbol **sym1 = (asymbol **) arg1; 2757 asymbol **sym2 = (asymbol **) arg2; 2758 unsigned int count1, count2; 2759 2760 /* Get relocation count for each symbol. Note that the count 2761 is stored in the udata pointer for section symbols! */ 2762 if ((*sym1)->flags & BSF_SECTION_SYM) 2763 count1 = (*sym1)->udata.i; 2764 else 2765 count1 = som_symbol_data (*sym1)->reloc_count; 2766 2767 if ((*sym2)->flags & BSF_SECTION_SYM) 2768 count2 = (*sym2)->udata.i; 2769 else 2770 count2 = som_symbol_data (*sym2)->reloc_count; 2771 2772 /* Return the appropriate value. */ 2773 if (count1 < count2) 2774 return 1; 2775 else if (count1 > count2) 2776 return -1; 2777 return 0; 2778 } 2779 2780 /* Return -1, 0, 1 indicating the relative ordering of subspace1 2781 and subspace. */ 2782 2783 static int 2784 compare_subspaces (const void *arg1, const void *arg2) 2785 { 2786 asection **subspace1 = (asection **) arg1; 2787 asection **subspace2 = (asection **) arg2; 2788 2789 if ((*subspace1)->target_index < (*subspace2)->target_index) 2790 return -1; 2791 else if ((*subspace2)->target_index < (*subspace1)->target_index) 2792 return 1; 2793 else 2794 return 0; 2795 } 2796 2797 /* Perform various work in preparation for emitting the fixup stream. */ 2798 2799 static bool 2800 som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms) 2801 { 2802 unsigned long i; 2803 asection *section; 2804 asymbol **sorted_syms; 2805 size_t amt; 2806 2807 if (num_syms == 0) 2808 return true; 2809 2810 /* Most SOM relocations involving a symbol have a length which is 2811 dependent on the index of the symbol. So symbols which are 2812 used often in relocations should have a small index. */ 2813 2814 /* First initialize the counters for each symbol. */ 2815 for (i = 0; i < num_syms; i++) 2816 { 2817 /* Handle a section symbol; these have no pointers back to the 2818 SOM symbol info. So we just use the udata field to hold the 2819 relocation count. */ 2820 if (som_symbol_data (syms[i]) == NULL 2821 || syms[i]->flags & BSF_SECTION_SYM) 2822 { 2823 syms[i]->flags |= BSF_SECTION_SYM; 2824 syms[i]->udata.i = 0; 2825 } 2826 else 2827 som_symbol_data (syms[i])->reloc_count = 0; 2828 } 2829 2830 /* Now that the counters are initialized, make a weighted count 2831 of how often a given symbol is used in a relocation. */ 2832 for (section = abfd->sections; section != NULL; section = section->next) 2833 { 2834 int j; 2835 2836 /* Does this section have any relocations? */ 2837 if ((int) section->reloc_count <= 0) 2838 continue; 2839 2840 /* Walk through each relocation for this section. */ 2841 for (j = 1; j < (int) section->reloc_count; j++) 2842 { 2843 arelent *reloc = section->orelocation[j]; 2844 int scale; 2845 2846 /* A relocation against a symbol in the *ABS* section really 2847 does not have a symbol. Likewise if the symbol isn't associated 2848 with any section. */ 2849 if (reloc->sym_ptr_ptr == NULL 2850 || bfd_is_abs_section ((*reloc->sym_ptr_ptr)->section)) 2851 continue; 2852 2853 /* Scaling to encourage symbols involved in R_DP_RELATIVE 2854 and R_CODE_ONE_SYMBOL relocations to come first. These 2855 two relocations have single byte versions if the symbol 2856 index is very small. */ 2857 if (reloc->howto->type == R_DP_RELATIVE 2858 || reloc->howto->type == R_CODE_ONE_SYMBOL) 2859 scale = 2; 2860 else 2861 scale = 1; 2862 2863 /* Handle section symbols by storing the count in the udata 2864 field. It will not be used and the count is very important 2865 for these symbols. */ 2866 if ((*reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM) 2867 { 2868 (*reloc->sym_ptr_ptr)->udata.i = 2869 (*reloc->sym_ptr_ptr)->udata.i + scale; 2870 continue; 2871 } 2872 2873 /* A normal symbol. Increment the count. */ 2874 som_symbol_data (*reloc->sym_ptr_ptr)->reloc_count += scale; 2875 } 2876 } 2877 2878 /* Sort a copy of the symbol table, rather than the canonical 2879 output symbol table. */ 2880 if (_bfd_mul_overflow (num_syms, sizeof (asymbol *), &amt)) 2881 { 2882 bfd_set_error (bfd_error_no_memory); 2883 return false; 2884 } 2885 sorted_syms = bfd_zalloc (abfd, amt); 2886 if (sorted_syms == NULL) 2887 return false; 2888 memcpy (sorted_syms, syms, num_syms * sizeof (asymbol *)); 2889 qsort (sorted_syms, num_syms, sizeof (asymbol *), compare_syms); 2890 obj_som_sorted_syms (abfd) = sorted_syms; 2891 2892 /* Compute the symbol indexes, they will be needed by the relocation 2893 code. */ 2894 for (i = 0; i < num_syms; i++) 2895 { 2896 /* A section symbol. Again, there is no pointer to backend symbol 2897 information, so we reuse the udata field again. */ 2898 if (sorted_syms[i]->flags & BSF_SECTION_SYM) 2899 sorted_syms[i]->udata.i = i; 2900 else 2901 som_symbol_data (sorted_syms[i])->index = i; 2902 } 2903 return true; 2904 } 2905 2906 static bool 2907 som_write_fixups (bfd *abfd, 2908 unsigned long current_offset, 2909 unsigned int *total_reloc_sizep) 2910 { 2911 unsigned int i, j; 2912 /* Chunk of memory that we can use as buffer space, then throw 2913 away. */ 2914 unsigned char tmp_space[SOM_TMP_BUFSIZE]; 2915 unsigned char *p; 2916 unsigned int total_reloc_size = 0; 2917 unsigned int subspace_reloc_size = 0; 2918 unsigned int num_spaces = obj_som_file_hdr (abfd)->space_total; 2919 asection *section = abfd->sections; 2920 size_t amt; 2921 2922 memset (tmp_space, 0, SOM_TMP_BUFSIZE); 2923 p = tmp_space; 2924 2925 /* All the fixups for a particular subspace are emitted in a single 2926 stream. All the subspaces for a particular space are emitted 2927 as a single stream. 2928 2929 So, to get all the locations correct one must iterate through all the 2930 spaces, for each space iterate through its subspaces and output a 2931 fixups stream. */ 2932 for (i = 0; i < num_spaces; i++) 2933 { 2934 asection *subsection; 2935 2936 /* Find a space. */ 2937 while (section && !som_is_space (section)) 2938 section = section->next; 2939 if (!section) 2940 break; 2941 2942 /* Now iterate through each of its subspaces. */ 2943 for (subsection = abfd->sections; 2944 subsection != NULL; 2945 subsection = subsection->next) 2946 { 2947 unsigned int reloc_offset; 2948 unsigned int current_rounding_mode; 2949 #ifndef NO_PCREL_MODES 2950 unsigned int current_call_mode; 2951 #endif 2952 2953 /* Find a subspace of this space. */ 2954 if (!som_is_subspace (subsection) 2955 || !som_is_container (section, subsection)) 2956 continue; 2957 2958 /* If this subspace does not have real data, then we are 2959 finished with it. */ 2960 if ((subsection->flags & SEC_HAS_CONTENTS) == 0) 2961 { 2962 som_section_data (subsection)->subspace_dict->fixup_request_index 2963 = -1; 2964 continue; 2965 } 2966 2967 /* This subspace has some relocations. Put the relocation stream 2968 index into the subspace record. */ 2969 som_section_data (subsection)->subspace_dict->fixup_request_index 2970 = total_reloc_size; 2971 2972 /* To make life easier start over with a clean slate for 2973 each subspace. Seek to the start of the relocation stream 2974 for this subspace in preparation for writing out its fixup 2975 stream. */ 2976 if (bfd_seek (abfd, current_offset + total_reloc_size, SEEK_SET) != 0) 2977 return false; 2978 2979 /* Buffer space has already been allocated. Just perform some 2980 initialization here. */ 2981 p = tmp_space; 2982 subspace_reloc_size = 0; 2983 reloc_offset = 0; 2984 som_initialize_reloc_queue (reloc_queue); 2985 current_rounding_mode = R_N_MODE; 2986 #ifndef NO_PCREL_MODES 2987 current_call_mode = R_SHORT_PCREL_MODE; 2988 #endif 2989 2990 /* Translate each BFD relocation into one or more SOM 2991 relocations. */ 2992 for (j = 0; j < subsection->reloc_count; j++) 2993 { 2994 arelent *bfd_reloc = subsection->orelocation[j]; 2995 unsigned int skip; 2996 int sym_num; 2997 2998 if (bfd_reloc->address < reloc_offset) 2999 { 3000 _bfd_error_handler 3001 /* xgettext:c-format */ 3002 (_("%pB(%pA+%#" PRIx64 "): " 3003 "%s relocation offset out of order"), 3004 abfd, subsection, (uint64_t) bfd_reloc->address, 3005 bfd_reloc->howto->name); 3006 bfd_set_error (bfd_error_bad_value); 3007 return false; 3008 } 3009 if (!bfd_reloc_offset_in_range (bfd_reloc->howto, 3010 abfd, subsection, 3011 bfd_reloc->address)) 3012 { 3013 _bfd_error_handler 3014 /* xgettext:c-format */ 3015 (_("%pB(%pA+%#" PRIx64 "): " 3016 "%s relocation offset out of range"), 3017 abfd, subsection, (uint64_t) bfd_reloc->address, 3018 bfd_reloc->howto->name); 3019 bfd_set_error (bfd_error_bad_value); 3020 return false; 3021 } 3022 3023 /* Get the symbol number. Remember it's stored in a 3024 special place for section symbols. */ 3025 if ((*bfd_reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM) 3026 sym_num = (*bfd_reloc->sym_ptr_ptr)->udata.i; 3027 else 3028 sym_num = som_symbol_data (*bfd_reloc->sym_ptr_ptr)->index; 3029 3030 /* If there is not enough room for the next couple relocations, 3031 then dump the current buffer contents now. Also reinitialize 3032 the relocation queue. 3033 3034 A single BFD relocation would probably only ever 3035 translate into at most 20 bytes of SOM relocations. 3036 However with fuzzed object files and resulting silly 3037 values for "skip" below, som_reloc_skip can emit 262 3038 bytes. Leave lots of space for growth. */ 3039 if (p - tmp_space + 512 > SOM_TMP_BUFSIZE) 3040 { 3041 amt = p - tmp_space; 3042 if (bfd_write (tmp_space, amt, abfd) != amt) 3043 return false; 3044 3045 p = tmp_space; 3046 som_initialize_reloc_queue (reloc_queue); 3047 } 3048 3049 /* Emit R_NO_RELOCATION fixups to map any bytes which were 3050 skipped. */ 3051 skip = bfd_reloc->address - reloc_offset; 3052 p = som_reloc_skip (abfd, skip, p, 3053 &subspace_reloc_size, reloc_queue); 3054 3055 /* Update reloc_offset for the next iteration. */ 3056 reloc_offset = bfd_reloc->address + bfd_reloc->howto->size; 3057 3058 /* Now the actual relocation we care about. */ 3059 switch (bfd_reloc->howto->type) 3060 { 3061 case R_PCREL_CALL: 3062 case R_ABS_CALL: 3063 p = som_reloc_call (abfd, p, &subspace_reloc_size, 3064 bfd_reloc, sym_num, reloc_queue); 3065 break; 3066 3067 case R_CODE_ONE_SYMBOL: 3068 case R_DP_RELATIVE: 3069 /* Account for any addend. */ 3070 if (bfd_reloc->addend) 3071 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3072 &subspace_reloc_size, reloc_queue); 3073 3074 if (sym_num < 0x20) 3075 { 3076 bfd_put_8 (abfd, bfd_reloc->howto->type + sym_num, p); 3077 subspace_reloc_size += 1; 3078 p += 1; 3079 } 3080 else if (sym_num < 0x100) 3081 { 3082 bfd_put_8 (abfd, bfd_reloc->howto->type + 32, p); 3083 bfd_put_8 (abfd, sym_num, p + 1); 3084 p = try_prev_fixup (abfd, &subspace_reloc_size, p, 3085 2, reloc_queue); 3086 } 3087 else if (sym_num < 0x10000000) 3088 { 3089 bfd_put_8 (abfd, bfd_reloc->howto->type + 33, p); 3090 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3091 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3092 p = try_prev_fixup (abfd, &subspace_reloc_size, 3093 p, 4, reloc_queue); 3094 } 3095 else 3096 abort (); 3097 break; 3098 3099 case R_DATA_GPREL: 3100 /* Account for any addend. */ 3101 if (bfd_reloc->addend) 3102 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3103 &subspace_reloc_size, reloc_queue); 3104 3105 if (sym_num < 0x10000000) 3106 { 3107 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3108 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3109 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3110 p = try_prev_fixup (abfd, &subspace_reloc_size, 3111 p, 4, reloc_queue); 3112 } 3113 else 3114 abort (); 3115 break; 3116 3117 case R_DATA_ONE_SYMBOL: 3118 case R_DATA_PLABEL: 3119 case R_CODE_PLABEL: 3120 case R_DLT_REL: 3121 /* Account for any addend using R_DATA_OVERRIDE. */ 3122 if (bfd_reloc->howto->type != R_DATA_ONE_SYMBOL 3123 && bfd_reloc->addend) 3124 p = som_reloc_addend (abfd, bfd_reloc->addend, p, 3125 &subspace_reloc_size, reloc_queue); 3126 3127 if (sym_num < 0x100) 3128 { 3129 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3130 bfd_put_8 (abfd, sym_num, p + 1); 3131 p = try_prev_fixup (abfd, &subspace_reloc_size, p, 3132 2, reloc_queue); 3133 } 3134 else if (sym_num < 0x10000000) 3135 { 3136 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p); 3137 bfd_put_8 (abfd, sym_num >> 16, p + 1); 3138 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); 3139 p = try_prev_fixup (abfd, &subspace_reloc_size, 3140 p, 4, reloc_queue); 3141 } 3142 else 3143 abort (); 3144 break; 3145 3146 case R_ENTRY: 3147 { 3148 unsigned int tmp; 3149 arelent *tmp_reloc = NULL; 3150 bfd_put_8 (abfd, R_ENTRY, p); 3151 3152 /* R_ENTRY relocations have 64 bits of associated 3153 data. Unfortunately the addend field of a bfd 3154 relocation is only 32 bits. So, we split up 3155 the 64bit unwind information and store part in 3156 the R_ENTRY relocation, and the rest in the R_EXIT 3157 relocation. */ 3158 bfd_put_32 (abfd, bfd_reloc->addend, p + 1); 3159 3160 /* Find the next R_EXIT relocation. */ 3161 for (tmp = j; tmp < subsection->reloc_count; tmp++) 3162 { 3163 tmp_reloc = subsection->orelocation[tmp]; 3164 if (tmp_reloc->howto->type == R_EXIT) 3165 break; 3166 } 3167 3168 if (tmp == subsection->reloc_count) 3169 abort (); 3170 3171 bfd_put_32 (abfd, tmp_reloc->addend, p + 5); 3172 p = try_prev_fixup (abfd, &subspace_reloc_size, 3173 p, 9, reloc_queue); 3174 break; 3175 } 3176 3177 case R_N_MODE: 3178 case R_S_MODE: 3179 case R_D_MODE: 3180 case R_R_MODE: 3181 /* If this relocation requests the current rounding 3182 mode, then it is redundant. */ 3183 if (bfd_reloc->howto->type != current_rounding_mode) 3184 { 3185 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3186 subspace_reloc_size += 1; 3187 p += 1; 3188 current_rounding_mode = bfd_reloc->howto->type; 3189 } 3190 break; 3191 3192 #ifndef NO_PCREL_MODES 3193 case R_LONG_PCREL_MODE: 3194 case R_SHORT_PCREL_MODE: 3195 if (bfd_reloc->howto->type != current_call_mode) 3196 { 3197 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3198 subspace_reloc_size += 1; 3199 p += 1; 3200 current_call_mode = bfd_reloc->howto->type; 3201 } 3202 break; 3203 #endif 3204 3205 case R_EXIT: 3206 case R_ALT_ENTRY: 3207 case R_FSEL: 3208 case R_LSEL: 3209 case R_RSEL: 3210 case R_BEGIN_BRTAB: 3211 case R_END_BRTAB: 3212 case R_BEGIN_TRY: 3213 case R_N0SEL: 3214 case R_N1SEL: 3215 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3216 subspace_reloc_size += 1; 3217 p += 1; 3218 break; 3219 3220 case R_END_TRY: 3221 /* The end of an exception handling region. The reloc's 3222 addend contains the offset of the exception handling 3223 code. */ 3224 if (bfd_reloc->addend == 0) 3225 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3226 else if (bfd_reloc->addend < 1024) 3227 { 3228 bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p); 3229 bfd_put_8 (abfd, bfd_reloc->addend / 4, p + 1); 3230 p = try_prev_fixup (abfd, &subspace_reloc_size, 3231 p, 2, reloc_queue); 3232 } 3233 else 3234 { 3235 bfd_put_8 (abfd, bfd_reloc->howto->type + 2, p); 3236 bfd_put_8 (abfd, (bfd_reloc->addend / 4) >> 16, p + 1); 3237 bfd_put_16 (abfd, bfd_reloc->addend / 4, p + 2); 3238 p = try_prev_fixup (abfd, &subspace_reloc_size, 3239 p, 4, reloc_queue); 3240 } 3241 break; 3242 3243 case R_COMP1: 3244 /* The only time we generate R_COMP1, R_COMP2 and 3245 R_CODE_EXPR relocs is for the difference of two 3246 symbols. Hence we can cheat here. */ 3247 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3248 bfd_put_8 (abfd, 0x44, p + 1); 3249 p = try_prev_fixup (abfd, &subspace_reloc_size, 3250 p, 2, reloc_queue); 3251 break; 3252 3253 case R_COMP2: 3254 /* The only time we generate R_COMP1, R_COMP2 and 3255 R_CODE_EXPR relocs is for the difference of two 3256 symbols. Hence we can cheat here. */ 3257 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3258 bfd_put_8 (abfd, 0x80, p + 1); 3259 bfd_put_8 (abfd, sym_num >> 16, p + 2); 3260 bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3); 3261 p = try_prev_fixup (abfd, &subspace_reloc_size, 3262 p, 5, reloc_queue); 3263 break; 3264 3265 case R_CODE_EXPR: 3266 case R_DATA_EXPR: 3267 /* The only time we generate R_COMP1, R_COMP2 and 3268 R_CODE_EXPR relocs is for the difference of two 3269 symbols. Hence we can cheat here. */ 3270 bfd_put_8 (abfd, bfd_reloc->howto->type, p); 3271 subspace_reloc_size += 1; 3272 p += 1; 3273 break; 3274 3275 /* Put a "R_RESERVED" relocation in the stream if 3276 we hit something we do not understand. The linker 3277 will complain loudly if this ever happens. */ 3278 default: 3279 bfd_put_8 (abfd, 0xff, p); 3280 subspace_reloc_size += 1; 3281 p += 1; 3282 break; 3283 } 3284 } 3285 3286 /* Last BFD relocation for a subspace has been processed. 3287 Map the rest of the subspace with R_NO_RELOCATION fixups. */ 3288 p = som_reloc_skip (abfd, subsection->size - reloc_offset, 3289 p, &subspace_reloc_size, reloc_queue); 3290 3291 /* Scribble out the relocations. */ 3292 amt = p - tmp_space; 3293 if (bfd_write (tmp_space, amt, abfd) != amt) 3294 return false; 3295 p = tmp_space; 3296 3297 total_reloc_size += subspace_reloc_size; 3298 som_section_data (subsection)->subspace_dict->fixup_request_quantity 3299 = subspace_reloc_size; 3300 } 3301 section = section->next; 3302 } 3303 *total_reloc_sizep = total_reloc_size; 3304 return true; 3305 } 3306 3307 /* Write the length of STR followed by STR to P which points into 3308 *BUF, a buffer of *BUFLEN size. Track total size in *STRINGS_SIZE, 3309 setting *STRX to the current offset for STR. When STR can't fit in 3310 *BUF, flush the buffer to ABFD, possibly reallocating. Return the 3311 next available location in *BUF, or NULL on error. */ 3312 3313 static char * 3314 add_string (char *p, const char *str, bfd *abfd, char **buf, size_t *buflen, 3315 unsigned int *strings_size, unsigned int *strx) 3316 { 3317 size_t length = strlen (str) + 1; 3318 /* Each entry will take 4 bytes to hold the string length + the 3319 string itself + null terminator + padding to a 4 byte boundary. */ 3320 size_t needed = (4 + length + 3) & ~3; 3321 3322 /* If there is not enough room for the next entry, then dump the 3323 current buffer contents now and maybe allocate a larger buffer. */ 3324 if (p - *buf + needed > *buflen) 3325 { 3326 /* Flush buffer before refilling or reallocating. */ 3327 size_t amt = p - *buf; 3328 if (bfd_write (*buf, amt, abfd) != amt) 3329 return NULL; 3330 3331 /* Reallocate if now empty buffer still too small. */ 3332 if (needed > *buflen) 3333 { 3334 /* Ensure a minimum growth factor to avoid O(n**2) space 3335 consumption for n strings. The optimal minimum factor 3336 seems to be 2. */ 3337 if (*buflen * 2 < needed) 3338 *buflen = needed; 3339 else 3340 *buflen = *buflen * 2; 3341 free (*buf); 3342 *buf = bfd_malloc (*buflen); 3343 if (*buf == NULL) 3344 return NULL; 3345 } 3346 3347 /* Reset to beginning of the (possibly new) buffer space. */ 3348 p = *buf; 3349 } 3350 3351 /* First element in a string table entry is the length of 3352 the string. This must always be 4 byte aligned. This is 3353 also an appropriate time to fill in the string index 3354 field in the symbol table entry. */ 3355 bfd_put_32 (abfd, length - 1, p); 3356 *strings_size += 4; 3357 p += 4; 3358 3359 *strx = *strings_size; 3360 3361 /* Next comes the string itself + a null terminator. */ 3362 memcpy (p, str, length); 3363 p += length; 3364 *strings_size += length; 3365 3366 /* Always align up to the next word boundary. */ 3367 if (length & 3) 3368 { 3369 length = 4 - (length & 3); 3370 memset (p, 0, length); 3371 *strings_size += length; 3372 p += length; 3373 } 3374 return p; 3375 } 3376 3377 /* Write out the space/subspace string table. */ 3378 3379 static bool 3380 som_write_space_strings (bfd *abfd, 3381 unsigned long current_offset, 3382 unsigned int *strings_size) 3383 { 3384 /* Chunk of memory that we can use as buffer space, then throw 3385 away. */ 3386 size_t tmp_space_size = SOM_TMP_BUFSIZE; 3387 char *tmp_space = bfd_malloc (tmp_space_size); 3388 char *p = tmp_space; 3389 asection *section; 3390 3391 if (tmp_space == NULL) 3392 return false; 3393 3394 /* Seek to the start of the space strings in preparation for writing 3395 them out. */ 3396 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0) 3397 return false; 3398 3399 /* Walk through all the spaces and subspaces (order is not important) 3400 building up and writing string table entries for their names. */ 3401 *strings_size = 0; 3402 for (section = abfd->sections; section != NULL; section = section->next) 3403 { 3404 unsigned int *strx; 3405 3406 /* Only work with space/subspaces; avoid any other sections 3407 which might have been made (.text for example). */ 3408 if (som_is_space (section)) 3409 strx = &som_section_data (section)->space_dict->name; 3410 else if (som_is_subspace (section)) 3411 strx = &som_section_data (section)->subspace_dict->name; 3412 else 3413 continue; 3414 3415 p = add_string (p, section->name, abfd, &tmp_space, &tmp_space_size, 3416 strings_size, strx); 3417 if (p == NULL) 3418 return false; 3419 } 3420 3421 /* Done with the space/subspace strings. Write out any information 3422 contained in a partial block. */ 3423 size_t amt = p - tmp_space; 3424 bool ok = amt ? bfd_write (tmp_space, amt, abfd) == amt : true; 3425 free (tmp_space); 3426 return ok; 3427 } 3428 3429 /* Write out the symbol string table. */ 3430 3431 static bool 3432 som_write_symbol_strings (bfd *abfd, 3433 unsigned long current_offset, 3434 asymbol **syms, 3435 unsigned int num_syms, 3436 unsigned int *strings_size, 3437 struct som_compilation_unit *compilation_unit) 3438 { 3439 unsigned int i; 3440 /* Chunk of memory that we can use as buffer space, then throw 3441 away. */ 3442 size_t tmp_space_size = SOM_TMP_BUFSIZE; 3443 char *tmp_space = bfd_malloc (tmp_space_size); 3444 char *p = tmp_space; 3445 3446 if (tmp_space == NULL) 3447 return false; 3448 3449 /* This gets a bit gruesome because of the compilation unit. The 3450 strings within the compilation unit are part of the symbol 3451 strings, but don't have symbol_dictionary entries. So, manually 3452 write them and update the compilation unit header. On input, the 3453 compilation unit header contains local copies of the strings. 3454 Move them aside. */ 3455 3456 /* Seek to the start of the space strings in preparation for writing 3457 them out. */ 3458 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0) 3459 return false; 3460 3461 *strings_size = 0; 3462 if (compilation_unit) 3463 { 3464 for (i = 0; i < 4; i++) 3465 { 3466 struct som_name_pt *name; 3467 3468 switch (i) 3469 { 3470 case 0: 3471 name = &compilation_unit->name; 3472 break; 3473 case 1: 3474 name = &compilation_unit->language_name; 3475 break; 3476 case 2: 3477 name = &compilation_unit->product_id; 3478 break; 3479 case 3: 3480 name = &compilation_unit->version_id; 3481 break; 3482 default: 3483 abort (); 3484 } 3485 3486 p = add_string (p, name->name, abfd, &tmp_space, &tmp_space_size, 3487 strings_size, &name->strx); 3488 3489 if (p == NULL) 3490 return false; 3491 } 3492 } 3493 3494 for (i = 0; i < num_syms; i++) 3495 { 3496 p = add_string (p, syms[i]->name, abfd, &tmp_space, &tmp_space_size, 3497 strings_size, 3498 &som_symbol_data (syms[i])->stringtab_offset); 3499 if (p == NULL) 3500 return false; 3501 } 3502 3503 /* Scribble out any partial block. */ 3504 size_t amt = p - tmp_space; 3505 bool ok = amt ? bfd_write (tmp_space, amt, abfd) == amt : true; 3506 free (tmp_space); 3507 return ok; 3508 } 3509 3510 /* Compute variable information to be placed in the SOM headers, 3511 space/subspace dictionaries, relocation streams, etc. Begin 3512 writing parts of the object file. */ 3513 3514 static bool 3515 som_begin_writing (bfd *abfd) 3516 { 3517 unsigned long current_offset = 0; 3518 unsigned int strings_size = 0; 3519 unsigned long num_spaces, num_subspaces, i; 3520 asection *section; 3521 unsigned int total_subspaces = 0; 3522 struct som_exec_auxhdr *exec_header = NULL; 3523 3524 /* The file header will always be first in an object file, 3525 everything else can be in random locations. To keep things 3526 "simple" BFD will lay out the object file in the manner suggested 3527 by the PRO ABI for PA-RISC Systems. */ 3528 3529 /* Before any output can really begin offsets for all the major 3530 portions of the object file must be computed. So, starting 3531 with the initial file header compute (and sometimes write) 3532 each portion of the object file. */ 3533 3534 /* Make room for the file header, it's contents are not complete 3535 yet, so it can not be written at this time. */ 3536 current_offset += sizeof (struct som_external_header); 3537 3538 /* Any auxiliary headers will follow the file header. Right now 3539 we support only the copyright and version headers. */ 3540 obj_som_file_hdr (abfd)->aux_header_location = current_offset; 3541 obj_som_file_hdr (abfd)->aux_header_size = 0; 3542 if (abfd->flags & (EXEC_P | DYNAMIC)) 3543 { 3544 /* Parts of the exec header will be filled in later, so 3545 delay writing the header itself. Fill in the defaults, 3546 and write it later. */ 3547 current_offset += sizeof (struct som_external_exec_auxhdr); 3548 obj_som_file_hdr (abfd)->aux_header_size 3549 += sizeof (struct som_external_exec_auxhdr); 3550 exec_header = obj_som_exec_hdr (abfd); 3551 exec_header->som_auxhdr.type = EXEC_AUX_ID; 3552 exec_header->som_auxhdr.length = 40; 3553 } 3554 if (obj_som_version_hdr (abfd) != NULL) 3555 { 3556 struct som_external_string_auxhdr ext_string_auxhdr; 3557 bfd_size_type len; 3558 3559 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0) 3560 return false; 3561 3562 /* Write the aux_id structure and the string length. */ 3563 len = sizeof (struct som_external_string_auxhdr); 3564 obj_som_file_hdr (abfd)->aux_header_size += len; 3565 current_offset += len; 3566 som_swap_string_auxhdr_out 3567 (obj_som_version_hdr (abfd), &ext_string_auxhdr); 3568 if (bfd_write (&ext_string_auxhdr, len, abfd) != len) 3569 return false; 3570 3571 /* Write the version string. */ 3572 len = obj_som_version_hdr (abfd)->header_id.length - 4; 3573 obj_som_file_hdr (abfd)->aux_header_size += len; 3574 current_offset += len; 3575 if (bfd_write (obj_som_version_hdr (abfd)->string, len, abfd) != len) 3576 return false; 3577 } 3578 3579 if (obj_som_copyright_hdr (abfd) != NULL) 3580 { 3581 struct som_external_string_auxhdr ext_string_auxhdr; 3582 bfd_size_type len; 3583 3584 if (bfd_seek (abfd, current_offset, SEEK_SET) != 0) 3585 return false; 3586 3587 /* Write the aux_id structure and the string length. */ 3588 len = sizeof (struct som_external_string_auxhdr); 3589 obj_som_file_hdr (abfd)->aux_header_size += len; 3590 current_offset += len; 3591 som_swap_string_auxhdr_out 3592 (obj_som_copyright_hdr (abfd), &ext_string_auxhdr); 3593 if (bfd_write (&ext_string_auxhdr, len, abfd) != len) 3594 return false; 3595 3596 /* Write the copyright string. */ 3597 len = obj_som_copyright_hdr (abfd)->header_id.length - 4; 3598 obj_som_file_hdr (abfd)->aux_header_size += len; 3599 current_offset += len; 3600 if (bfd_write (obj_som_copyright_hdr (abfd)->string, len, abfd) != len) 3601 return false; 3602 } 3603 3604 /* Next comes the initialization pointers; we have no initialization 3605 pointers, so current offset does not change. */ 3606 obj_som_file_hdr (abfd)->init_array_location = current_offset; 3607 obj_som_file_hdr (abfd)->init_array_total = 0; 3608 3609 /* Next are the space records. These are fixed length records. 3610 3611 Count the number of spaces to determine how much room is needed 3612 in the object file for the space records. 3613 3614 The names of the spaces are stored in a separate string table, 3615 and the index for each space into the string table is computed 3616 below. Therefore, it is not possible to write the space headers 3617 at this time. */ 3618 num_spaces = som_count_spaces (abfd); 3619 obj_som_file_hdr (abfd)->space_location = current_offset; 3620 obj_som_file_hdr (abfd)->space_total = num_spaces; 3621 current_offset += 3622 num_spaces * sizeof (struct som_external_space_dictionary_record); 3623 3624 /* Next are the subspace records. These are fixed length records. 3625 3626 Count the number of subspaes to determine how much room is needed 3627 in the object file for the subspace records. 3628 3629 A variety if fields in the subspace record are still unknown at 3630 this time (index into string table, fixup stream location/size, etc). */ 3631 num_subspaces = som_count_subspaces (abfd); 3632 obj_som_file_hdr (abfd)->subspace_location = current_offset; 3633 obj_som_file_hdr (abfd)->subspace_total = num_subspaces; 3634 current_offset 3635 += num_subspaces * sizeof (struct som_external_subspace_dictionary_record); 3636 3637 /* Next is the string table for the space/subspace names. We will 3638 build and write the string table on the fly. At the same time 3639 we will fill in the space/subspace name index fields. */ 3640 3641 /* The string table needs to be aligned on a word boundary. */ 3642 if (current_offset % 4) 3643 current_offset += (4 - (current_offset % 4)); 3644 3645 /* Mark the offset of the space/subspace string table in the 3646 file header. */ 3647 obj_som_file_hdr (abfd)->space_strings_location = current_offset; 3648 3649 /* Scribble out the space strings. */ 3650 if (! som_write_space_strings (abfd, current_offset, &strings_size)) 3651 return false; 3652 3653 /* Record total string table size in the header and update the 3654 current offset. */ 3655 obj_som_file_hdr (abfd)->space_strings_size = strings_size; 3656 current_offset += strings_size; 3657 3658 /* Next is the compilation unit. */ 3659 obj_som_file_hdr (abfd)->compiler_location = current_offset; 3660 obj_som_file_hdr (abfd)->compiler_total = 0; 3661 if (obj_som_compilation_unit (abfd)) 3662 { 3663 obj_som_file_hdr (abfd)->compiler_total = 1; 3664 current_offset += sizeof (struct som_external_compilation_unit); 3665 } 3666 3667 /* Now compute the file positions for the loadable subspaces, taking 3668 care to make sure everything stays properly aligned. */ 3669 3670 section = abfd->sections; 3671 for (i = 0; i < num_spaces; i++) 3672 { 3673 asection *subsection; 3674 int first_subspace; 3675 unsigned int subspace_offset = 0; 3676 3677 /* Find a space. */ 3678 while (!som_is_space (section)) 3679 section = section->next; 3680 3681 first_subspace = 1; 3682 /* Now look for all its subspaces. */ 3683 for (subsection = abfd->sections; 3684 subsection != NULL; 3685 subsection = subsection->next) 3686 { 3687 3688 if (!som_is_subspace (subsection) 3689 || !som_is_container (section, subsection) 3690 || (subsection->flags & SEC_ALLOC) == 0) 3691 continue; 3692 3693 /* If this is the first subspace in the space, and we are 3694 building an executable, then take care to make sure all 3695 the alignments are correct and update the exec header. */ 3696 if (first_subspace 3697 && (abfd->flags & (EXEC_P | DYNAMIC))) 3698 { 3699 /* Demand paged executables have each space aligned to a 3700 page boundary. Sharable executables (write-protected 3701 text) have just the private (aka data & bss) space aligned 3702 to a page boundary. Ugh. Not true for HPUX. 3703 3704 The HPUX kernel requires the text to always be page aligned 3705 within the file regardless of the executable's type. */ 3706 if (abfd->flags & (D_PAGED | DYNAMIC) 3707 || (subsection->flags & SEC_CODE) 3708 || ((abfd->flags & WP_TEXT) 3709 && (subsection->flags & SEC_DATA))) 3710 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3711 3712 /* Update the exec header. */ 3713 if (subsection->flags & SEC_CODE && exec_header->exec_tfile == 0) 3714 { 3715 exec_header->exec_tmem = section->vma; 3716 exec_header->exec_tfile = current_offset; 3717 } 3718 if (subsection->flags & SEC_DATA && exec_header->exec_dfile == 0) 3719 { 3720 exec_header->exec_dmem = section->vma; 3721 exec_header->exec_dfile = current_offset; 3722 } 3723 3724 /* Keep track of exactly where we are within a particular 3725 space. This is necessary as the braindamaged HPUX 3726 loader will create holes between subspaces *and* 3727 subspace alignments are *NOT* preserved. What a crock. */ 3728 subspace_offset = subsection->vma; 3729 3730 /* Only do this for the first subspace within each space. */ 3731 first_subspace = 0; 3732 } 3733 else if (abfd->flags & (EXEC_P | DYNAMIC)) 3734 { 3735 /* The braindamaged HPUX loader may have created a hole 3736 between two subspaces. It is *not* sufficient to use 3737 the alignment specifications within the subspaces to 3738 account for these holes -- I've run into at least one 3739 case where the loader left one code subspace unaligned 3740 in a final executable. 3741 3742 To combat this we keep a current offset within each space, 3743 and use the subspace vma fields to detect and preserve 3744 holes. What a crock! 3745 3746 ps. This is not necessary for unloadable space/subspaces. */ 3747 current_offset += subsection->vma - subspace_offset; 3748 if (subsection->flags & SEC_CODE) 3749 exec_header->exec_tsize += subsection->vma - subspace_offset; 3750 else 3751 exec_header->exec_dsize += subsection->vma - subspace_offset; 3752 subspace_offset += subsection->vma - subspace_offset; 3753 } 3754 3755 subsection->target_index = total_subspaces++; 3756 /* This is real data to be loaded from the file. */ 3757 if (subsection->flags & SEC_LOAD) 3758 { 3759 /* Update the size of the code & data. */ 3760 if (abfd->flags & (EXEC_P | DYNAMIC) 3761 && subsection->flags & SEC_CODE) 3762 exec_header->exec_tsize += subsection->size; 3763 else if (abfd->flags & (EXEC_P | DYNAMIC) 3764 && subsection->flags & SEC_DATA) 3765 exec_header->exec_dsize += subsection->size; 3766 som_section_data (subsection)->subspace_dict->file_loc_init_value 3767 = current_offset; 3768 subsection->filepos = current_offset; 3769 current_offset += subsection->size; 3770 subspace_offset += subsection->size; 3771 } 3772 /* Looks like uninitialized data. */ 3773 else 3774 { 3775 /* Update the size of the bss section. */ 3776 if (abfd->flags & (EXEC_P | DYNAMIC)) 3777 exec_header->exec_bsize += subsection->size; 3778 3779 som_section_data (subsection)->subspace_dict->file_loc_init_value 3780 = 0; 3781 som_section_data (subsection)->subspace_dict-> 3782 initialization_length = 0; 3783 } 3784 } 3785 /* Goto the next section. */ 3786 section = section->next; 3787 } 3788 3789 /* Finally compute the file positions for unloadable subspaces. 3790 If building an executable, start the unloadable stuff on its 3791 own page. */ 3792 3793 if (abfd->flags & (EXEC_P | DYNAMIC)) 3794 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3795 3796 obj_som_file_hdr (abfd)->unloadable_sp_location = current_offset; 3797 section = abfd->sections; 3798 for (i = 0; i < num_spaces; i++) 3799 { 3800 asection *subsection; 3801 3802 /* Find a space. */ 3803 while (!som_is_space (section)) 3804 section = section->next; 3805 3806 if (abfd->flags & (EXEC_P | DYNAMIC)) 3807 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3808 3809 /* Now look for all its subspaces. */ 3810 for (subsection = abfd->sections; 3811 subsection != NULL; 3812 subsection = subsection->next) 3813 { 3814 3815 if (!som_is_subspace (subsection) 3816 || !som_is_container (section, subsection) 3817 || (subsection->flags & SEC_ALLOC) != 0) 3818 continue; 3819 3820 subsection->target_index = total_subspaces++; 3821 /* This is real data to be loaded from the file. */ 3822 if ((subsection->flags & SEC_LOAD) == 0) 3823 { 3824 som_section_data (subsection)->subspace_dict->file_loc_init_value 3825 = current_offset; 3826 subsection->filepos = current_offset; 3827 current_offset += subsection->size; 3828 } 3829 /* Looks like uninitialized data. */ 3830 else 3831 { 3832 som_section_data (subsection)->subspace_dict->file_loc_init_value 3833 = 0; 3834 som_section_data (subsection)->subspace_dict-> 3835 initialization_length = subsection->size; 3836 } 3837 } 3838 /* Goto the next section. */ 3839 section = section->next; 3840 } 3841 3842 /* If building an executable, then make sure to seek to and write 3843 one byte at the end of the file to make sure any necessary 3844 zeros are filled in. Ugh. */ 3845 if (abfd->flags & (EXEC_P | DYNAMIC)) 3846 current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); 3847 if (bfd_seek (abfd, current_offset - 1, SEEK_SET) != 0) 3848 return false; 3849 if (bfd_write ("", 1, abfd) != 1) 3850 return false; 3851 3852 obj_som_file_hdr (abfd)->unloadable_sp_size 3853 = current_offset - obj_som_file_hdr (abfd)->unloadable_sp_location; 3854 3855 /* Loader fixups are not supported in any way shape or form. */ 3856 obj_som_file_hdr (abfd)->loader_fixup_location = 0; 3857 obj_som_file_hdr (abfd)->loader_fixup_total = 0; 3858 3859 /* Done. Store the total size of the SOM so far. */ 3860 obj_som_file_hdr (abfd)->som_length = current_offset; 3861 3862 return true; 3863 } 3864 3865 /* Finally, scribble out the various headers to the disk. */ 3866 3867 static bool 3868 som_finish_writing (bfd *abfd) 3869 { 3870 int num_spaces = som_count_spaces (abfd); 3871 asymbol **syms = bfd_get_outsymbols (abfd); 3872 int i, num_syms; 3873 int subspace_index = 0; 3874 file_ptr location; 3875 asection *section; 3876 unsigned long current_offset; 3877 unsigned int strings_size, total_reloc_size; 3878 size_t amt; 3879 struct som_external_header ext_header; 3880 3881 /* We must set up the version identifier here as objcopy/strip copy 3882 private BFD data too late for us to handle this in som_begin_writing. */ 3883 if (obj_som_exec_data (abfd) 3884 && obj_som_exec_data (abfd)->version_id) 3885 obj_som_file_hdr (abfd)->version_id = obj_som_exec_data (abfd)->version_id; 3886 else 3887 obj_som_file_hdr (abfd)->version_id = NEW_VERSION_ID; 3888 3889 /* Next is the symbol table. These are fixed length records. 3890 3891 Count the number of symbols to determine how much room is needed 3892 in the object file for the symbol table. 3893 3894 The names of the symbols are stored in a separate string table, 3895 and the index for each symbol name into the string table is computed 3896 below. Therefore, it is not possible to write the symbol table 3897 at this time. 3898 3899 These used to be output before the subspace contents, but they 3900 were moved here to work around a stupid bug in the hpux linker 3901 (fixed in hpux10). */ 3902 current_offset = obj_som_file_hdr (abfd)->som_length; 3903 3904 /* Make sure we're on a word boundary. */ 3905 if (current_offset % 4) 3906 current_offset += (4 - (current_offset % 4)); 3907 3908 num_syms = bfd_get_symcount (abfd); 3909 obj_som_file_hdr (abfd)->symbol_location = current_offset; 3910 obj_som_file_hdr (abfd)->symbol_total = num_syms; 3911 current_offset += 3912 num_syms * sizeof (struct som_external_symbol_dictionary_record); 3913 3914 /* Next are the symbol strings. 3915 Align them to a word boundary. */ 3916 if (current_offset % 4) 3917 current_offset += (4 - (current_offset % 4)); 3918 obj_som_file_hdr (abfd)->symbol_strings_location = current_offset; 3919 3920 /* Scribble out the symbol strings. */ 3921 if (! som_write_symbol_strings (abfd, current_offset, syms, 3922 num_syms, &strings_size, 3923 obj_som_compilation_unit (abfd))) 3924 return false; 3925 3926 /* Record total string table size in header and update the 3927 current offset. */ 3928 obj_som_file_hdr (abfd)->symbol_strings_size = strings_size; 3929 current_offset += strings_size; 3930 3931 /* Do prep work before handling fixups. */ 3932 if (!som_prep_for_fixups (abfd, 3933 bfd_get_outsymbols (abfd), 3934 bfd_get_symcount (abfd))) 3935 return false; 3936 3937 /* At the end of the file is the fixup stream which starts on a 3938 word boundary. */ 3939 if (current_offset % 4) 3940 current_offset += (4 - (current_offset % 4)); 3941 obj_som_file_hdr (abfd)->fixup_request_location = current_offset; 3942 3943 /* Write the fixups and update fields in subspace headers which 3944 relate to the fixup stream. */ 3945 if (! som_write_fixups (abfd, current_offset, &total_reloc_size)) 3946 return false; 3947 3948 /* Record the total size of the fixup stream in the file header. */ 3949 obj_som_file_hdr (abfd)->fixup_request_total = total_reloc_size; 3950 3951 /* Done. Store the total size of the SOM. */ 3952 obj_som_file_hdr (abfd)->som_length = current_offset + total_reloc_size; 3953 3954 /* Now that the symbol table information is complete, build and 3955 write the symbol table. */ 3956 if (! som_build_and_write_symbol_table (abfd)) 3957 return false; 3958 3959 /* Subspaces are written first so that we can set up information 3960 about them in their containing spaces as the subspace is written. */ 3961 3962 /* Seek to the start of the subspace dictionary records. */ 3963 location = obj_som_file_hdr (abfd)->subspace_location; 3964 if (bfd_seek (abfd, location, SEEK_SET) != 0) 3965 return false; 3966 3967 section = abfd->sections; 3968 /* Now for each loadable space write out records for its subspaces. */ 3969 for (i = 0; i < num_spaces; i++) 3970 { 3971 asection *subsection; 3972 3973 /* Find a space. */ 3974 while (!som_is_space (section)) 3975 section = section->next; 3976 3977 /* Now look for all its subspaces. */ 3978 for (subsection = abfd->sections; 3979 subsection != NULL; 3980 subsection = subsection->next) 3981 { 3982 struct som_external_subspace_dictionary_record ext_subspace_dict; 3983 3984 /* Skip any section which does not correspond to a space 3985 or subspace. Or does not have SEC_ALLOC set (and therefore 3986 has no real bits on the disk). */ 3987 if (!som_is_subspace (subsection) 3988 || !som_is_container (section, subsection) 3989 || (subsection->flags & SEC_ALLOC) == 0) 3990 continue; 3991 3992 /* If this is the first subspace for this space, then save 3993 the index of the subspace in its containing space. Also 3994 set "is_loadable" in the containing space. */ 3995 3996 if (som_section_data (section)->space_dict->subspace_quantity == 0) 3997 { 3998 som_section_data (section)->space_dict->is_loadable = 1; 3999 som_section_data (section)->space_dict->subspace_index 4000 = subspace_index; 4001 } 4002 4003 /* Increment the number of subspaces seen and the number of 4004 subspaces contained within the current space. */ 4005 subspace_index++; 4006 som_section_data (section)->space_dict->subspace_quantity++; 4007 4008 /* Mark the index of the current space within the subspace's 4009 dictionary record. */ 4010 som_section_data (subsection)->subspace_dict->space_index = i; 4011 4012 /* Dump the current subspace header. */ 4013 som_swap_subspace_dictionary_record_out 4014 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict); 4015 amt = sizeof (struct som_subspace_dictionary_record); 4016 if (bfd_write (&ext_subspace_dict, amt, abfd) != amt) 4017 return false; 4018 } 4019 /* Goto the next section. */ 4020 section = section->next; 4021 } 4022 4023 /* Now repeat the process for unloadable subspaces. */ 4024 section = abfd->sections; 4025 /* Now for each space write out records for its subspaces. */ 4026 for (i = 0; i < num_spaces; i++) 4027 { 4028 asection *subsection; 4029 4030 /* Find a space. */ 4031 while (!som_is_space (section)) 4032 section = section->next; 4033 4034 /* Now look for all its subspaces. */ 4035 for (subsection = abfd->sections; 4036 subsection != NULL; 4037 subsection = subsection->next) 4038 { 4039 struct som_external_subspace_dictionary_record ext_subspace_dict; 4040 4041 /* Skip any section which does not correspond to a space or 4042 subspace, or which SEC_ALLOC set (and therefore handled 4043 in the loadable spaces/subspaces code above). */ 4044 4045 if (!som_is_subspace (subsection) 4046 || !som_is_container (section, subsection) 4047 || (subsection->flags & SEC_ALLOC) != 0) 4048 continue; 4049 4050 /* If this is the first subspace for this space, then save 4051 the index of the subspace in its containing space. Clear 4052 "is_loadable". */ 4053 4054 if (som_section_data (section)->space_dict->subspace_quantity == 0) 4055 { 4056 som_section_data (section)->space_dict->is_loadable = 0; 4057 som_section_data (section)->space_dict->subspace_index 4058 = subspace_index; 4059 } 4060 4061 /* Increment the number of subspaces seen and the number of 4062 subspaces contained within the current space. */ 4063 som_section_data (section)->space_dict->subspace_quantity++; 4064 subspace_index++; 4065 4066 /* Mark the index of the current space within the subspace's 4067 dictionary record. */ 4068 som_section_data (subsection)->subspace_dict->space_index = i; 4069 4070 /* Dump this subspace header. */ 4071 som_swap_subspace_dictionary_record_out 4072 (som_section_data (subsection)->subspace_dict, &ext_subspace_dict); 4073 amt = sizeof (struct som_subspace_dictionary_record); 4074 if (bfd_write (&ext_subspace_dict, amt, abfd) != amt) 4075 return false; 4076 } 4077 /* Goto the next section. */ 4078 section = section->next; 4079 } 4080 4081 /* All the subspace dictionary records are written, and all the 4082 fields are set up in the space dictionary records. 4083 4084 Seek to the right location and start writing the space 4085 dictionary records. */ 4086 location = obj_som_file_hdr (abfd)->space_location; 4087 if (bfd_seek (abfd, location, SEEK_SET) != 0) 4088 return false; 4089 4090 section = abfd->sections; 4091 for (i = 0; i < num_spaces; i++) 4092 { 4093 struct som_external_space_dictionary_record ext_space_dict; 4094 4095 /* Find a space. */ 4096 while (!som_is_space (section)) 4097 section = section->next; 4098 4099 /* Dump its header. */ 4100 som_swap_space_dictionary_out (som_section_data (section)->space_dict, 4101 &ext_space_dict); 4102 amt = sizeof (struct som_external_space_dictionary_record); 4103 if (bfd_write (&ext_space_dict, amt, abfd) != amt) 4104 return false; 4105 4106 /* Goto the next section. */ 4107 section = section->next; 4108 } 4109 4110 /* Write the compilation unit record if there is one. */ 4111 if (obj_som_compilation_unit (abfd)) 4112 { 4113 struct som_external_compilation_unit ext_comp_unit; 4114 4115 location = obj_som_file_hdr (abfd)->compiler_location; 4116 if (bfd_seek (abfd, location, SEEK_SET) != 0) 4117 return false; 4118 4119 som_swap_compilation_unit_out 4120 (obj_som_compilation_unit (abfd), &ext_comp_unit); 4121 4122 amt = sizeof (struct som_external_compilation_unit); 4123 if (bfd_write (&ext_comp_unit, amt, abfd) != amt) 4124 return false; 4125 } 4126 4127 /* Setting of the system_id has to happen very late now that copying of 4128 BFD private data happens *after* section contents are set. */ 4129 if ((abfd->flags & (EXEC_P | DYNAMIC)) && obj_som_exec_data (abfd)) 4130 obj_som_file_hdr (abfd)->system_id = obj_som_exec_data (abfd)->system_id; 4131 else if (bfd_get_mach (abfd) == pa20) 4132 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC2_0; 4133 else if (bfd_get_mach (abfd) == pa11) 4134 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_1; 4135 else 4136 obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_0; 4137 4138 /* Swap and compute the checksum for the file header just before writing 4139 the header to disk. */ 4140 som_swap_header_out (obj_som_file_hdr (abfd), &ext_header); 4141 bfd_putb32 (som_compute_checksum (&ext_header), ext_header.checksum); 4142 4143 /* Only thing left to do is write out the file header. It is always 4144 at location zero. Seek there and write it. */ 4145 if (bfd_seek (abfd, 0, SEEK_SET) != 0) 4146 return false; 4147 amt = sizeof (struct som_external_header); 4148 if (bfd_write (&ext_header, amt, abfd) != amt) 4149 return false; 4150 4151 /* Now write the exec header. */ 4152 if (abfd->flags & (EXEC_P | DYNAMIC)) 4153 { 4154 long tmp, som_length; 4155 struct som_exec_auxhdr *exec_header; 4156 struct som_external_exec_auxhdr ext_exec_header; 4157 4158 exec_header = obj_som_exec_hdr (abfd); 4159 exec_header->exec_entry = bfd_get_start_address (abfd); 4160 if (obj_som_exec_data (abfd)) 4161 exec_header->exec_flags = obj_som_exec_data (abfd)->exec_flags; 4162 4163 /* Oh joys. Ram some of the BSS data into the DATA section 4164 to be compatible with how the hp linker makes objects 4165 (saves memory space). */ 4166 tmp = exec_header->exec_dsize; 4167 tmp = SOM_ALIGN (tmp, PA_PAGESIZE); 4168 exec_header->exec_bsize -= (tmp - exec_header->exec_dsize); 4169 if (exec_header->exec_bsize < 0) 4170 exec_header->exec_bsize = 0; 4171 exec_header->exec_dsize = tmp; 4172 4173 /* Now perform some sanity checks. The idea is to catch bogons now and 4174 inform the user, instead of silently generating a bogus file. */ 4175 som_length = obj_som_file_hdr (abfd)->som_length; 4176 if (exec_header->exec_tfile + exec_header->exec_tsize > som_length 4177 || exec_header->exec_dfile + exec_header->exec_dsize > som_length) 4178 { 4179 bfd_set_error (bfd_error_bad_value); 4180 return false; 4181 } 4182 4183 som_swap_exec_auxhdr_out (exec_header, &ext_exec_header); 4184 4185 if (bfd_seek (abfd, obj_som_file_hdr (abfd)->aux_header_location, 4186 SEEK_SET) != 0) 4187 return false; 4188 4189 amt = sizeof (ext_exec_header); 4190 if (bfd_write (&ext_exec_header, amt, abfd) != amt) 4191 return false; 4192 } 4193 return true; 4194 } 4195 4196 /* Compute and return the checksum for a SOM file header. */ 4197 4198 static uint32_t 4199 som_compute_checksum (struct som_external_header *hdr) 4200 { 4201 size_t count, i; 4202 uint32_t checksum; 4203 uint32_t *buffer = (uint32_t *) hdr; 4204 4205 checksum = 0; 4206 count = sizeof (*hdr) / sizeof (*buffer); 4207 for (i = 0; i < count; i++) 4208 checksum ^= *(buffer + i); 4209 4210 return checksum; 4211 } 4212 4213 static void 4214 som_bfd_derive_misc_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, 4215 asymbol *sym, 4216 struct som_misc_symbol_info *info) 4217 { 4218 /* Initialize. */ 4219 memset (info, 0, sizeof (struct som_misc_symbol_info)); 4220 4221 /* The HP SOM linker requires detailed type information about 4222 all symbols (including undefined symbols!). Unfortunately, 4223 the type specified in an import/export statement does not 4224 always match what the linker wants. Severe braindamage. */ 4225 4226 /* Section symbols will not have a SOM symbol type assigned to 4227 them yet. Assign all section symbols type ST_DATA. */ 4228 if (sym->flags & BSF_SECTION_SYM) 4229 info->symbol_type = ST_DATA; 4230 else 4231 { 4232 /* For BFD style common, the linker will choke unless we set the 4233 type and scope to ST_STORAGE and SS_UNSAT, respectively. */ 4234 if (bfd_is_com_section (sym->section)) 4235 { 4236 info->symbol_type = ST_STORAGE; 4237 info->symbol_scope = SS_UNSAT; 4238 } 4239 4240 /* It is possible to have a symbol without an associated 4241 type. This happens if the user imported the symbol 4242 without a type and the symbol was never defined 4243 locally. If BSF_FUNCTION is set for this symbol, then 4244 assign it type ST_CODE (the HP linker requires undefined 4245 external functions to have type ST_CODE rather than ST_ENTRY). */ 4246 else if ((som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN 4247 || som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE) 4248 && bfd_is_und_section (sym->section) 4249 && sym->flags & BSF_FUNCTION) 4250 info->symbol_type = ST_CODE; 4251 4252 /* Handle function symbols which were defined in this file. 4253 They should have type ST_ENTRY. Also retrieve the argument 4254 relocation bits from the SOM backend information. */ 4255 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ENTRY 4256 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE 4257 && (sym->flags & BSF_FUNCTION)) 4258 || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN 4259 && (sym->flags & BSF_FUNCTION))) 4260 { 4261 info->symbol_type = ST_ENTRY; 4262 info->arg_reloc = som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc; 4263 info->priv_level= som_symbol_data (sym)->tc_data.ap.hppa_priv_level; 4264 } 4265 4266 /* For unknown symbols set the symbol's type based on the symbol's 4267 section (ST_DATA for DATA sections, ST_CODE for CODE sections). */ 4268 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN) 4269 { 4270 if (bfd_is_abs_section (sym->section)) 4271 info->symbol_type = ST_ABSOLUTE; 4272 else if (sym->section->flags & SEC_CODE) 4273 info->symbol_type = ST_CODE; 4274 else 4275 info->symbol_type = ST_DATA; 4276 } 4277 4278 /* From now on it's a very simple mapping. */ 4279 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ABSOLUTE) 4280 info->symbol_type = ST_ABSOLUTE; 4281 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE) 4282 info->symbol_type = ST_CODE; 4283 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_DATA) 4284 info->symbol_type = ST_DATA; 4285 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_MILLICODE) 4286 info->symbol_type = ST_MILLICODE; 4287 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PLABEL) 4288 info->symbol_type = ST_PLABEL; 4289 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PRI_PROG) 4290 info->symbol_type = ST_PRI_PROG; 4291 else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_SEC_PROG) 4292 info->symbol_type = ST_SEC_PROG; 4293 } 4294 4295 /* Now handle the symbol's scope. Exported data which is not 4296 in the common section has scope SS_UNIVERSAL. Note scope 4297 of common symbols was handled earlier! */ 4298 if (bfd_is_com_section (sym->section)) 4299 ; 4300 else if (bfd_is_und_section (sym->section)) 4301 info->symbol_scope = SS_UNSAT; 4302 else if (sym->flags & (BSF_EXPORT | BSF_WEAK)) 4303 info->symbol_scope = SS_UNIVERSAL; 4304 /* Anything else which is not in the common section has scope 4305 SS_LOCAL. */ 4306 else 4307 info->symbol_scope = SS_LOCAL; 4308 4309 /* Now set the symbol_info field. It has no real meaning 4310 for undefined or common symbols, but the HP linker will 4311 choke if it's not set to some "reasonable" value. We 4312 use zero as a reasonable value. */ 4313 if (bfd_is_com_section (sym->section) 4314 || bfd_is_und_section (sym->section) 4315 || bfd_is_abs_section (sym->section)) 4316 info->symbol_info = 0; 4317 /* For all other symbols, the symbol_info field contains the 4318 subspace index of the space this symbol is contained in. */ 4319 else 4320 info->symbol_info = sym->section->target_index; 4321 4322 /* Set the symbol's value. */ 4323 info->symbol_value = sym->value + sym->section->vma; 4324 4325 /* The secondary_def field is for "weak" symbols. */ 4326 if (sym->flags & BSF_WEAK) 4327 info->secondary_def = true; 4328 else 4329 info->secondary_def = false; 4330 4331 /* The is_comdat, is_common and dup_common fields provide various 4332 flavors of common. 4333 4334 For data symbols, setting IS_COMMON provides Fortran style common 4335 (duplicate definitions and overlapped initialization). Setting both 4336 IS_COMMON and DUP_COMMON provides Cobol style common (duplicate 4337 definitions as long as they are all the same length). In a shared 4338 link data symbols retain their IS_COMMON and DUP_COMMON flags. 4339 An IS_COMDAT data symbol is similar to a IS_COMMON | DUP_COMMON 4340 symbol except in that it loses its IS_COMDAT flag in a shared link. 4341 4342 For code symbols, IS_COMDAT and DUP_COMMON have effect. Universal 4343 DUP_COMMON code symbols are not exported from shared libraries. 4344 IS_COMDAT symbols are exported but they lose their IS_COMDAT flag. 4345 4346 We take a simplified approach to setting the is_comdat, is_common 4347 and dup_common flags in symbols based on the flag settings of their 4348 subspace. This avoids having to add directives like `.comdat' but 4349 the linker behavior is probably undefined if there is more than one 4350 universal symbol (comdat key sysmbol) in a subspace. 4351 4352 The behavior of these flags is not well documentmented, so there 4353 may be bugs and some surprising interactions with other flags. */ 4354 if (sym->section->owner != NULL 4355 && sym->section->owner->xvec->flavour == bfd_target_som_flavour 4356 && som_section_data (sym->section) 4357 && som_section_data (sym->section)->subspace_dict 4358 && info->symbol_scope == SS_UNIVERSAL 4359 && (info->symbol_type == ST_ENTRY 4360 || info->symbol_type == ST_CODE 4361 || info->symbol_type == ST_DATA)) 4362 { 4363 info->is_comdat 4364 = som_section_data (sym->section)->subspace_dict->is_comdat; 4365 info->is_common 4366 = som_section_data (sym->section)->subspace_dict->is_common; 4367 info->dup_common 4368 = som_section_data (sym->section)->subspace_dict->dup_common; 4369 } 4370 } 4371 4372 /* Build and write, in one big chunk, the entire symbol table for 4373 this BFD. */ 4374 4375 static bool 4376 som_build_and_write_symbol_table (bfd *abfd) 4377 { 4378 unsigned int num_syms = bfd_get_symcount (abfd); 4379 file_ptr symtab_location = obj_som_file_hdr (abfd)->symbol_location; 4380 asymbol **bfd_syms = obj_som_sorted_syms (abfd); 4381 struct som_external_symbol_dictionary_record *som_symtab = NULL; 4382 unsigned int i; 4383 bfd_size_type symtab_size; 4384 size_t amt; 4385 4386 /* Compute total symbol table size and allocate a chunk of memory 4387 to hold the symbol table as we build it. */ 4388 if (_bfd_mul_overflow (num_syms, 4389 sizeof (struct som_external_symbol_dictionary_record), 4390 &amt)) 4391 { 4392 bfd_set_error (bfd_error_no_memory); 4393 return false; 4394 } 4395 som_symtab = bfd_zmalloc (amt); 4396 if (som_symtab == NULL && num_syms != 0) 4397 goto error_return; 4398 4399 /* Walk over each symbol. */ 4400 for (i = 0; i < num_syms; i++) 4401 { 4402 struct som_misc_symbol_info info; 4403 unsigned int flags; 4404 4405 /* This is really an index into the symbol strings table. 4406 By the time we get here, the index has already been 4407 computed and stored into the name field in the BFD symbol. */ 4408 bfd_putb32 (som_symbol_data (bfd_syms[i])->stringtab_offset, 4409 som_symtab[i].name); 4410 4411 /* Derive SOM information from the BFD symbol. */ 4412 som_bfd_derive_misc_symbol_info (abfd, bfd_syms[i], &info); 4413 4414 /* Now use it. */ 4415 flags = (info.symbol_type << SOM_SYMBOL_TYPE_SH) 4416 | (info.symbol_scope << SOM_SYMBOL_SCOPE_SH) 4417 | (info.arg_reloc << SOM_SYMBOL_ARG_RELOC_SH) 4418 | (3 << SOM_SYMBOL_XLEAST_SH) 4419 | (info.secondary_def ? SOM_SYMBOL_SECONDARY_DEF : 0) 4420 | (info.is_common ? SOM_SYMBOL_IS_COMMON : 0) 4421 | (info.dup_common ? SOM_SYMBOL_DUP_COMMON : 0); 4422 bfd_putb32 (flags, som_symtab[i].flags); 4423 4424 flags = (info.symbol_info << SOM_SYMBOL_SYMBOL_INFO_SH) 4425 | (info.is_comdat ? SOM_SYMBOL_IS_COMDAT : 0); 4426 bfd_putb32 (flags, som_symtab[i].info); 4427 bfd_putb32 (info.symbol_value | info.priv_level, 4428 som_symtab[i].symbol_value); 4429 } 4430 4431 /* Everything is ready, seek to the right location and 4432 scribble out the symbol table. */ 4433 if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0) 4434 goto error_return; 4435 4436 symtab_size = num_syms; 4437 symtab_size *= sizeof (struct som_external_symbol_dictionary_record); 4438 if (bfd_write (som_symtab, symtab_size, abfd) != symtab_size) 4439 goto error_return; 4440 4441 free (som_symtab); 4442 return true; 4443 4444 error_return: 4445 free (som_symtab); 4446 return false; 4447 } 4448 4449 /* Write an object in SOM format. */ 4450 4451 static bool 4452 som_write_object_contents (bfd *abfd) 4453 { 4454 if (! abfd->output_has_begun) 4455 { 4456 /* Set up fixed parts of the file, space, and subspace headers. 4457 Notify the world that output has begun. */ 4458 som_prep_headers (abfd); 4459 abfd->output_has_begun = true; 4460 /* Start writing the object file. This include all the string 4461 tables, fixup streams, and other portions of the object file. */ 4462 som_begin_writing (abfd); 4463 } 4464 4465 return som_finish_writing (abfd); 4466 } 4467 4468 /* Read and save the string table associated with the given BFD. */ 4470 4471 static bool 4472 som_slurp_string_table (bfd *abfd) 4473 { 4474 char *stringtab; 4475 bfd_size_type amt; 4476 4477 /* Use the saved version if its available. */ 4478 if (obj_som_stringtab (abfd) != NULL) 4479 return true; 4480 4481 /* I don't think this can currently happen, and I'm not sure it should 4482 really be an error, but it's better than getting unpredictable results 4483 from the host's malloc when passed a size of zero. */ 4484 if (obj_som_stringtab_size (abfd) == 0) 4485 { 4486 bfd_set_error (bfd_error_no_symbols); 4487 return false; 4488 } 4489 4490 /* Allocate and read in the string table. */ 4491 if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) != 0) 4492 return false; 4493 amt = obj_som_stringtab_size (abfd); 4494 stringtab = (char *) _bfd_malloc_and_read (abfd, amt + 1, amt); 4495 if (stringtab == NULL) 4496 return false; 4497 /* Make sure that the strings are zero-terminated. */ 4498 stringtab[amt] = 0; 4499 4500 /* Save our results and return success. */ 4501 obj_som_stringtab (abfd) = stringtab; 4502 return true; 4503 } 4504 4505 /* Return the amount of data (in bytes) required to hold the symbol 4506 table for this object. */ 4507 4508 static long 4509 som_get_symtab_upper_bound (bfd *abfd) 4510 { 4511 if (!som_slurp_symbol_table (abfd)) 4512 return -1; 4513 4514 return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *); 4515 } 4516 4517 /* Convert from a SOM subspace index to a BFD section. */ 4518 4519 asection * 4520 bfd_section_from_som_symbol 4521 (bfd *abfd, struct som_external_symbol_dictionary_record *symbol) 4522 { 4523 asection *section; 4524 unsigned int flags = bfd_getb32 (symbol->flags); 4525 unsigned int symbol_type = (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK; 4526 4527 /* The meaning of the symbol_info field changes for functions 4528 within executables. So only use the quick symbol_info mapping for 4529 incomplete objects and non-function symbols in executables. */ 4530 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 4531 || (symbol_type != ST_ENTRY 4532 && symbol_type != ST_PRI_PROG 4533 && symbol_type != ST_SEC_PROG 4534 && symbol_type != ST_MILLICODE)) 4535 { 4536 int idx = (bfd_getb32 (symbol->info) >> SOM_SYMBOL_SYMBOL_INFO_SH) 4537 & SOM_SYMBOL_SYMBOL_INFO_MASK; 4538 4539 for (section = abfd->sections; section != NULL; section = section->next) 4540 if (section->target_index == idx && som_is_subspace (section)) 4541 return section; 4542 } 4543 else 4544 { 4545 unsigned int value = bfd_getb32 (symbol->symbol_value); 4546 4547 /* For executables we will have to use the symbol's address and 4548 find out what section would contain that address. Yuk. */ 4549 for (section = abfd->sections; section; section = section->next) 4550 if (value >= section->vma 4551 && value <= section->vma + section->size 4552 && som_is_subspace (section)) 4553 return section; 4554 } 4555 4556 /* Could be a symbol from an external library (such as an OMOS 4557 shared library). Don't abort. */ 4558 return bfd_abs_section_ptr; 4559 } 4560 4561 /* Read and save the symbol table associated with the given BFD. */ 4562 4563 static unsigned int 4564 som_slurp_symbol_table (bfd *abfd) 4565 { 4566 unsigned int symbol_count = bfd_get_symcount (abfd); 4567 size_t symsize = sizeof (struct som_external_symbol_dictionary_record); 4568 char *stringtab; 4569 struct som_external_symbol_dictionary_record *buf = NULL, *bufp, *endbufp; 4570 som_symbol_type *sym, *symbase = NULL; 4571 size_t amt; 4572 4573 /* Return saved value if it exists. */ 4574 if (obj_som_symtab (abfd) != NULL) 4575 goto successful_return; 4576 4577 /* Special case. This is *not* an error. */ 4578 if (symbol_count == 0) 4579 goto successful_return; 4580 4581 if (!som_slurp_string_table (abfd)) 4582 goto error_return; 4583 4584 stringtab = obj_som_stringtab (abfd); 4585 4586 /* Read in the external SOM representation. */ 4587 if (_bfd_mul_overflow (symbol_count, symsize, &amt)) 4588 { 4589 bfd_set_error (bfd_error_file_too_big); 4590 goto error_return; 4591 } 4592 if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) != 0) 4593 goto error_return; 4594 buf = (struct som_external_symbol_dictionary_record *) 4595 _bfd_malloc_and_read (abfd, amt, amt); 4596 if (buf == NULL) 4597 goto error_return; 4598 4599 if (_bfd_mul_overflow (symbol_count, sizeof (som_symbol_type), &amt)) 4600 { 4601 bfd_set_error (bfd_error_file_too_big); 4602 goto error_return; 4603 } 4604 symbase = bfd_zmalloc (amt); 4605 if (symbase == NULL) 4606 goto error_return; 4607 4608 /* Iterate over all the symbols and internalize them. */ 4609 endbufp = buf + symbol_count; 4610 for (bufp = buf, sym = symbase; bufp < endbufp; ++bufp) 4611 { 4612 unsigned int flags = bfd_getb32 (bufp->flags); 4613 unsigned int symbol_type = 4614 (flags >> SOM_SYMBOL_TYPE_SH) & SOM_SYMBOL_TYPE_MASK; 4615 unsigned int symbol_scope = 4616 (flags >> SOM_SYMBOL_SCOPE_SH) & SOM_SYMBOL_SCOPE_MASK; 4617 bfd_vma offset; 4618 4619 /* I don't think we care about these. */ 4620 if (symbol_type == ST_SYM_EXT || symbol_type == ST_ARG_EXT) 4621 continue; 4622 4623 /* Set some private data we care about. */ 4624 if (symbol_type == ST_NULL) 4625 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN; 4626 else if (symbol_type == ST_ABSOLUTE) 4627 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ABSOLUTE; 4628 else if (symbol_type == ST_DATA) 4629 som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA; 4630 else if (symbol_type == ST_CODE) 4631 som_symbol_data (sym)->som_type = SYMBOL_TYPE_CODE; 4632 else if (symbol_type == ST_PRI_PROG) 4633 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PRI_PROG; 4634 else if (symbol_type == ST_SEC_PROG) 4635 som_symbol_data (sym)->som_type = SYMBOL_TYPE_SEC_PROG; 4636 else if (symbol_type == ST_ENTRY) 4637 som_symbol_data (sym)->som_type = SYMBOL_TYPE_ENTRY; 4638 else if (symbol_type == ST_MILLICODE) 4639 som_symbol_data (sym)->som_type = SYMBOL_TYPE_MILLICODE; 4640 else if (symbol_type == ST_PLABEL) 4641 som_symbol_data (sym)->som_type = SYMBOL_TYPE_PLABEL; 4642 else 4643 som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN; 4644 som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc = 4645 (flags >> SOM_SYMBOL_ARG_RELOC_SH) & SOM_SYMBOL_ARG_RELOC_MASK; 4646 4647 /* Some reasonable defaults. */ 4648 sym->symbol.the_bfd = abfd; 4649 offset = bfd_getb32 (bufp->name); 4650 if (offset < obj_som_stringtab_size (abfd)) 4651 sym->symbol.name = offset + stringtab; 4652 else 4653 { 4654 bfd_set_error (bfd_error_bad_value); 4655 goto error_return; 4656 } 4657 sym->symbol.value = bfd_getb32 (bufp->symbol_value); 4658 sym->symbol.section = NULL; 4659 sym->symbol.flags = 0; 4660 4661 switch (symbol_type) 4662 { 4663 case ST_ENTRY: 4664 case ST_MILLICODE: 4665 sym->symbol.flags |= BSF_FUNCTION; 4666 som_symbol_data (sym)->tc_data.ap.hppa_priv_level = 4667 sym->symbol.value & 0x3; 4668 sym->symbol.value &= ~0x3; 4669 break; 4670 4671 case ST_STUB: 4672 case ST_CODE: 4673 case ST_PRI_PROG: 4674 case ST_SEC_PROG: 4675 som_symbol_data (sym)->tc_data.ap.hppa_priv_level = 4676 sym->symbol.value & 0x3; 4677 sym->symbol.value &= ~0x3; 4678 /* If the symbol's scope is SS_UNSAT, then these are 4679 undefined function symbols. */ 4680 if (symbol_scope == SS_UNSAT) 4681 sym->symbol.flags |= BSF_FUNCTION; 4682 4683 default: 4684 break; 4685 } 4686 4687 /* Handle scoping and section information. */ 4688 switch (symbol_scope) 4689 { 4690 /* symbol_info field is undefined for SS_EXTERNAL and SS_UNSAT symbols, 4691 so the section associated with this symbol can't be known. */ 4692 case SS_EXTERNAL: 4693 if (symbol_type != ST_STORAGE) 4694 sym->symbol.section = bfd_und_section_ptr; 4695 else 4696 sym->symbol.section = bfd_com_section_ptr; 4697 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL); 4698 break; 4699 4700 case SS_UNSAT: 4701 if (symbol_type != ST_STORAGE) 4702 sym->symbol.section = bfd_und_section_ptr; 4703 else 4704 sym->symbol.section = bfd_com_section_ptr; 4705 break; 4706 4707 case SS_UNIVERSAL: 4708 sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL); 4709 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp); 4710 sym->symbol.value -= sym->symbol.section->vma; 4711 break; 4712 4713 case SS_LOCAL: 4714 sym->symbol.flags |= BSF_LOCAL; 4715 sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp); 4716 sym->symbol.value -= sym->symbol.section->vma; 4717 break; 4718 4719 default: 4720 sym->symbol.section = bfd_und_section_ptr; 4721 break; 4722 } 4723 4724 /* Check for a weak symbol. */ 4725 if (flags & SOM_SYMBOL_SECONDARY_DEF) 4726 sym->symbol.flags |= BSF_WEAK; 4727 /* Mark section symbols and symbols used by the debugger. 4728 Note $START$ is a magic code symbol, NOT a section symbol. */ 4729 if (sym->symbol.name[0] == '$' 4730 && sym->symbol.name[strlen (sym->symbol.name) - 1] == '$' 4731 && !strcmp (sym->symbol.name, sym->symbol.section->name)) 4732 sym->symbol.flags |= BSF_SECTION_SYM; 4733 else if (startswith (sym->symbol.name, "L$0\002")) 4734 { 4735 sym->symbol.flags |= BSF_SECTION_SYM; 4736 sym->symbol.name = sym->symbol.section->name; 4737 } 4738 else if (startswith (sym->symbol.name, "L$0\001")) 4739 sym->symbol.flags |= BSF_DEBUGGING; 4740 /* Note increment at bottom of loop, since we skip some symbols 4741 we can not include it as part of the for statement. */ 4742 sym++; 4743 } 4744 4745 /* We modify the symbol count to record the number of BFD symbols we 4746 created. */ 4747 abfd->symcount = sym - symbase; 4748 4749 /* Save our results and return success. */ 4750 obj_som_symtab (abfd) = symbase; 4751 successful_return: 4752 free (buf); 4753 return true; 4754 4755 error_return: 4756 free (symbase); 4757 free (buf); 4758 return false; 4759 } 4760 4761 /* Canonicalize a SOM symbol table. Return the number of entries 4762 in the symbol table. */ 4763 4764 static long 4765 som_canonicalize_symtab (bfd *abfd, asymbol **location) 4766 { 4767 int i; 4768 som_symbol_type *symbase; 4769 4770 if (!som_slurp_symbol_table (abfd)) 4771 return -1; 4772 4773 i = bfd_get_symcount (abfd); 4774 symbase = obj_som_symtab (abfd); 4775 4776 for (; i > 0; i--, location++, symbase++) 4777 *location = &symbase->symbol; 4778 4779 /* Final null pointer. */ 4780 *location = 0; 4781 return (bfd_get_symcount (abfd)); 4782 } 4783 4784 /* Make a SOM symbol. There is nothing special to do here. */ 4785 4786 static asymbol * 4787 som_make_empty_symbol (bfd *abfd) 4788 { 4789 size_t amt = sizeof (som_symbol_type); 4790 som_symbol_type *new_symbol_type = bfd_zalloc (abfd, amt); 4791 4792 if (new_symbol_type == NULL) 4793 return NULL; 4794 new_symbol_type->symbol.the_bfd = abfd; 4795 4796 return &new_symbol_type->symbol; 4797 } 4798 4799 /* Print symbol information. */ 4800 4801 static void 4802 som_print_symbol (bfd *abfd, 4803 void *afile, 4804 asymbol *symbol, 4805 bfd_print_symbol_type how) 4806 { 4807 FILE *file = (FILE *) afile; 4808 4809 switch (how) 4810 { 4811 case bfd_print_symbol_name: 4812 fprintf (file, "%s", symbol->name); 4813 break; 4814 case bfd_print_symbol_more: 4815 fprintf (file, "som %08" PRIx64 " %x", 4816 (uint64_t) symbol->value, symbol->flags); 4817 break; 4818 case bfd_print_symbol_all: 4819 { 4820 const char *section_name; 4821 4822 section_name = symbol->section ? symbol->section->name : "(*none*)"; 4823 bfd_print_symbol_vandf (abfd, (void *) file, symbol); 4824 fprintf (file, " %s\t%s", section_name, symbol->name); 4825 break; 4826 } 4827 } 4828 } 4829 4830 static bool 4831 som_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, 4832 const char *name) 4833 { 4834 return name[0] == 'L' && name[1] == '$'; 4835 } 4836 4837 /* Count or process variable-length SOM fixup records. 4838 4839 To avoid code duplication we use this code both to compute the number 4840 of relocations requested by a stream, and to internalize the stream. 4841 4842 When computing the number of relocations requested by a stream the 4843 variables rptr, section, and symbols have no meaning. 4844 4845 Return the number of relocations requested by the fixup stream. When 4846 not just counting 4847 4848 This needs at least two or three more passes to get it cleaned up. */ 4849 4850 static unsigned int 4851 som_set_reloc_info (unsigned char *fixup, 4852 unsigned int end, 4853 arelent *internal_relocs, 4854 asection *section, 4855 asymbol **symbols, 4856 unsigned int symcount, 4857 bool just_count) 4858 { 4859 unsigned int deallocate_contents = 0; 4860 unsigned char *end_fixups = &fixup[end]; 4861 int variables[26], stack[20], count, prev_fixup, *sp, saved_unwind_bits; 4862 arelent *rptr = internal_relocs; 4863 unsigned int offset = 0; 4864 4865 #define var(c) variables[(c) - 'A'] 4866 #define push(v) (*sp++ = (v)) 4867 #define pop() (*--sp) 4868 #define emptystack() (sp == stack) 4869 4870 som_initialize_reloc_queue (reloc_queue); 4871 memset (variables, 0, sizeof (variables)); 4872 memset (stack, 0, sizeof (stack)); 4873 count = 0; 4874 prev_fixup = 0; 4875 saved_unwind_bits = 0; 4876 sp = stack; 4877 4878 while (fixup < end_fixups) 4879 { 4880 const char *cp; 4881 unsigned int op; 4882 const struct fixup_format *fp; 4883 4884 /* Save pointer to the start of this fixup. We'll use 4885 it later to determine if it is necessary to put this fixup 4886 on the queue. */ 4887 unsigned char *save_fixup = fixup; 4888 4889 /* Get the fixup code and its associated format. */ 4890 op = *fixup++; 4891 fp = &som_fixup_formats[op]; 4892 4893 /* Handle a request for a previous fixup. */ 4894 if (*fp->format == 'P') 4895 { 4896 if (!reloc_queue[fp->D].reloc) 4897 /* The back-reference doesn't exist. This is a broken 4898 object file, likely fuzzed. Just ignore the fixup. */ 4899 continue; 4900 4901 /* Get pointer to the beginning of the prev fixup, move 4902 the repeated fixup to the head of the queue. */ 4903 fixup = reloc_queue[fp->D].reloc; 4904 som_reloc_queue_fix (reloc_queue, fp->D); 4905 prev_fixup = 1; 4906 4907 /* Get the fixup code and its associated format. */ 4908 op = *fixup++; 4909 fp = &som_fixup_formats[op]; 4910 } 4911 4912 /* If this fixup will be passed to BFD, set some reasonable defaults. */ 4913 if (! just_count 4914 && som_hppa_howto_table[op].type != R_NO_RELOCATION 4915 && som_hppa_howto_table[op].type != R_DATA_OVERRIDE) 4916 { 4917 rptr->address = offset; 4918 rptr->howto = &som_hppa_howto_table[op]; 4919 rptr->addend = 0; 4920 rptr->sym_ptr_ptr = &bfd_abs_section_ptr->symbol; 4921 } 4922 4923 /* Set default input length to 0. Get the opcode class index 4924 into D. */ 4925 var ('L') = 0; 4926 var ('D') = fp->D; 4927 var ('U') = saved_unwind_bits; 4928 4929 /* Get the opcode format. */ 4930 cp = fp->format; 4931 4932 /* Process the format string. Parsing happens in two phases, 4933 parse RHS, then assign to LHS. Repeat until no more 4934 characters in the format string. */ 4935 while (*cp) 4936 { 4937 /* The variable this pass is going to compute a value for. */ 4938 unsigned int varname = *cp++; 4939 const int *subop; 4940 int c; 4941 4942 /* Start processing RHS. Continue until a NULL or '=' is found. */ 4943 do 4944 { 4945 unsigned v; 4946 4947 c = *cp++; 4948 4949 /* If this is a variable, push it on the stack. */ 4950 if (ISUPPER (c)) 4951 push (var (c)); 4952 4953 /* If this is a lower case letter, then it represents 4954 additional data from the fixup stream to be pushed onto 4955 the stack. */ 4956 else if (ISLOWER (c)) 4957 { 4958 int bits = (c - 'a') * 8; 4959 for (v = 0; c > 'a' && fixup < end_fixups; --c) 4960 v = (v << 8) | *fixup++; 4961 if (varname == 'V') 4962 v = sign_extend (v, bits); 4963 push (v); 4964 } 4965 4966 /* A decimal constant. Push it on the stack. */ 4967 else if (ISDIGIT (c)) 4968 { 4969 v = c - '0'; 4970 while (ISDIGIT (*cp)) 4971 v = (v * 10) + (*cp++ - '0'); 4972 push (v); 4973 } 4974 else 4975 /* An operator. Pop two values from the stack and 4976 use them as operands to the given operation. Push 4977 the result of the operation back on the stack. */ 4978 switch (c) 4979 { 4980 case '+': 4981 v = pop (); 4982 v += pop (); 4983 push (v); 4984 break; 4985 case '*': 4986 v = pop (); 4987 v *= pop (); 4988 push (v); 4989 break; 4990 case '<': 4991 v = pop (); 4992 v = pop () << v; 4993 push (v); 4994 break; 4995 default: 4996 abort (); 4997 } 4998 } 4999 while (*cp && *cp != '='); 5000 5001 /* Move over the equal operator. */ 5002 cp++; 5003 5004 /* Pop the RHS off the stack. */ 5005 c = pop (); 5006 5007 /* Perform the assignment. */ 5008 var (varname) = c; 5009 5010 /* Handle side effects. and special 'O' stack cases. */ 5011 switch (varname) 5012 { 5013 /* Consume some bytes from the input space. */ 5014 case 'L': 5015 offset += c; 5016 break; 5017 /* A symbol to use in the relocation. Make a note 5018 of this if we are not just counting. */ 5019 case 'S': 5020 if (!just_count && symbols != NULL && (unsigned int) c < symcount) 5021 rptr->sym_ptr_ptr = &symbols[c]; 5022 break; 5023 /* Argument relocation bits for a function call. */ 5024 case 'R': 5025 if (! just_count) 5026 { 5027 unsigned int tmp = var ('R'); 5028 rptr->addend = 0; 5029 5030 if ((som_hppa_howto_table[op].type == R_PCREL_CALL 5031 && R_PCREL_CALL + 10 > op) 5032 || (som_hppa_howto_table[op].type == R_ABS_CALL 5033 && R_ABS_CALL + 10 > op)) 5034 { 5035 /* Simple encoding. */ 5036 if (tmp > 4) 5037 { 5038 tmp -= 5; 5039 rptr->addend |= 1; 5040 } 5041 if (tmp == 4) 5042 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2; 5043 else if (tmp == 3) 5044 rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4; 5045 else if (tmp == 2) 5046 rptr->addend |= 1 << 8 | 1 << 6; 5047 else if (tmp == 1) 5048 rptr->addend |= 1 << 8; 5049 } 5050 else 5051 { 5052 unsigned int tmp1, tmp2; 5053 5054 /* First part is easy -- low order two bits are 5055 directly copied, then shifted away. */ 5056 rptr->addend = tmp & 0x3; 5057 tmp >>= 2; 5058 5059 /* Diving the result by 10 gives us the second 5060 part. If it is 9, then the first two words 5061 are a double precision paramater, else it is 5062 3 * the first arg bits + the 2nd arg bits. */ 5063 tmp1 = tmp / 10; 5064 tmp -= tmp1 * 10; 5065 if (tmp1 == 9) 5066 rptr->addend += (0xe << 6); 5067 else 5068 { 5069 /* Get the two pieces. */ 5070 tmp2 = tmp1 / 3; 5071 tmp1 -= tmp2 * 3; 5072 /* Put them in the addend. */ 5073 rptr->addend += (tmp2 << 8) + (tmp1 << 6); 5074 } 5075 5076 /* What's left is the third part. It's unpacked 5077 just like the second. */ 5078 if (tmp == 9) 5079 rptr->addend += (0xe << 2); 5080 else 5081 { 5082 tmp2 = tmp / 3; 5083 tmp -= tmp2 * 3; 5084 rptr->addend += (tmp2 << 4) + (tmp << 2); 5085 } 5086 } 5087 rptr->addend = HPPA_R_ADDEND (rptr->addend, 0); 5088 } 5089 break; 5090 /* Handle the linker expression stack. */ 5091 case 'O': 5092 switch (op) 5093 { 5094 case R_COMP1: 5095 subop = comp1_opcodes; 5096 break; 5097 case R_COMP2: 5098 subop = comp2_opcodes; 5099 break; 5100 case R_COMP3: 5101 subop = comp3_opcodes; 5102 break; 5103 default: 5104 abort (); 5105 } 5106 while (*subop <= (unsigned char) c) 5107 ++subop; 5108 --subop; 5109 break; 5110 /* The lower 32unwind bits must be persistent. */ 5111 case 'U': 5112 saved_unwind_bits = var ('U'); 5113 break; 5114 5115 default: 5116 break; 5117 } 5118 } 5119 5120 /* If we used a previous fixup, clean up after it. */ 5121 if (prev_fixup) 5122 { 5123 fixup = save_fixup + 1; 5124 prev_fixup = 0; 5125 } 5126 /* Queue it. */ 5127 else if (fixup > save_fixup + 1) 5128 som_reloc_queue_insert (save_fixup, fixup - save_fixup, reloc_queue); 5129 5130 /* We do not pass R_DATA_OVERRIDE or R_NO_RELOCATION 5131 fixups to BFD. */ 5132 if (som_hppa_howto_table[op].type != R_DATA_OVERRIDE 5133 && som_hppa_howto_table[op].type != R_NO_RELOCATION) 5134 { 5135 /* Done with a single reloction. Loop back to the top. */ 5136 if (! just_count) 5137 { 5138 if (som_hppa_howto_table[op].type == R_ENTRY) 5139 rptr->addend = var ('T'); 5140 else if (som_hppa_howto_table[op].type == R_EXIT) 5141 rptr->addend = var ('U'); 5142 else if (som_hppa_howto_table[op].type == R_PCREL_CALL 5143 || som_hppa_howto_table[op].type == R_ABS_CALL) 5144 ; 5145 else if (som_hppa_howto_table[op].type == R_DATA_ONE_SYMBOL) 5146 { 5147 /* Try what was specified in R_DATA_OVERRIDE first 5148 (if anything). Then the hard way using the 5149 section contents. */ 5150 rptr->addend = var ('V'); 5151 5152 if (rptr->addend == 0 5153 && (section->flags & SEC_HAS_CONTENTS) != 0) 5154 { 5155 if (!section->contents) 5156 { 5157 /* Got to read the damn contents first. We don't 5158 bother saving the contents (yet). Add it one 5159 day if the need arises. */ 5160 bfd_byte *contents; 5161 if (!bfd_malloc_and_get_section (section->owner, 5162 section, &contents)) 5163 { 5164 free (contents); 5165 return (unsigned) -1; 5166 } 5167 section->contents = contents; 5168 deallocate_contents = 1; 5169 } 5170 if (offset - var ('L') <= section->size 5171 && section->size - (offset - var ('L')) >= 4) 5172 rptr->addend = bfd_get_32 (section->owner, 5173 (section->contents 5174 + offset - var ('L'))); 5175 } 5176 } 5177 else 5178 rptr->addend = var ('V'); 5179 rptr++; 5180 } 5181 count++; 5182 /* Now that we've handled a "full" relocation, reset 5183 some state. */ 5184 memset (variables, 0, sizeof (variables)); 5185 memset (stack, 0, sizeof (stack)); 5186 } 5187 } 5188 if (deallocate_contents) 5189 { 5190 free (section->contents); 5191 section->contents = NULL; 5192 } 5193 5194 return count; 5195 5196 #undef var 5197 #undef push 5198 #undef pop 5199 #undef emptystack 5200 } 5201 5202 /* Read in the relocs (aka fixups in SOM terms) for a section. 5203 5204 som_get_reloc_upper_bound calls this routine with JUST_COUNT 5205 set to TRUE to indicate it only needs a count of the number 5206 of actual relocations. */ 5207 5208 static bool 5209 som_slurp_reloc_table (bfd *abfd, 5210 asection *section, 5211 asymbol **symbols, 5212 bool just_count) 5213 { 5214 unsigned char *external_relocs; 5215 unsigned int fixup_stream_size; 5216 arelent *internal_relocs; 5217 unsigned int num_relocs; 5218 size_t amt; 5219 5220 fixup_stream_size = som_section_data (section)->reloc_size; 5221 /* If there were no relocations, then there is nothing to do. */ 5222 if (section->reloc_count == 0) 5223 return true; 5224 5225 /* If reloc_count is -1, then the relocation stream has not been 5226 parsed. We must do so now to know how many relocations exist. */ 5227 if (section->reloc_count == (unsigned) -1) 5228 { 5229 /* Read in the external forms. */ 5230 if (bfd_seek (abfd, obj_som_reloc_filepos (abfd) + section->rel_filepos, 5231 SEEK_SET) != 0) 5232 return false; 5233 amt = fixup_stream_size; 5234 external_relocs = _bfd_malloc_and_read (abfd, amt, amt); 5235 if (external_relocs == NULL) 5236 return false; 5237 5238 /* Let callers know how many relocations found. 5239 also save the relocation stream as we will 5240 need it again. */ 5241 section->reloc_count = som_set_reloc_info (external_relocs, 5242 fixup_stream_size, 5243 NULL, NULL, NULL, 0, true); 5244 5245 som_section_data (section)->reloc_stream = external_relocs; 5246 } 5247 5248 /* If the caller only wanted a count, then return now. */ 5249 if (just_count) 5250 return true; 5251 5252 num_relocs = section->reloc_count; 5253 external_relocs = som_section_data (section)->reloc_stream; 5254 /* Return saved information about the relocations if it is available. */ 5255 if (section->relocation != NULL) 5256 return true; 5257 5258 if (_bfd_mul_overflow (num_relocs, sizeof (arelent), &amt)) 5259 { 5260 bfd_set_error (bfd_error_file_too_big); 5261 return false; 5262 } 5263 internal_relocs = bfd_zalloc (abfd, amt); 5264 if (internal_relocs == NULL) 5265 return false; 5266 5267 /* Process and internalize the relocations. */ 5268 som_set_reloc_info (external_relocs, fixup_stream_size, 5269 internal_relocs, section, symbols, 5270 bfd_get_symcount (abfd), false); 5271 5272 /* We're done with the external relocations. Free them. */ 5273 free (external_relocs); 5274 som_section_data (section)->reloc_stream = NULL; 5275 5276 /* Save our results and return success. */ 5277 section->relocation = internal_relocs; 5278 return true; 5279 } 5280 5281 /* Return the number of bytes required to store the relocation 5282 information associated with the given section. */ 5283 5284 static long 5285 som_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) 5286 { 5287 /* If section has relocations, then read in the relocation stream 5288 and parse it to determine how many relocations exist. */ 5289 if (asect->flags & SEC_RELOC) 5290 { 5291 if (! som_slurp_reloc_table (abfd, asect, NULL, true)) 5292 return -1; 5293 return (asect->reloc_count + 1) * sizeof (arelent *); 5294 } 5295 5296 /* There are no relocations. Return enough space to hold the 5297 NULL pointer which will be installed if som_canonicalize_reloc 5298 is called. */ 5299 return sizeof (arelent *); 5300 } 5301 5302 /* Convert relocations from SOM (external) form into BFD internal 5303 form. Return the number of relocations. */ 5304 5305 static long 5306 som_canonicalize_reloc (bfd *abfd, 5307 sec_ptr section, 5308 arelent **relptr, 5309 asymbol **symbols) 5310 { 5311 arelent *tblptr; 5312 int count; 5313 5314 if (! som_slurp_reloc_table (abfd, section, symbols, false)) 5315 return -1; 5316 5317 count = section->reloc_count; 5318 tblptr = section->relocation; 5319 5320 while (count--) 5321 *relptr++ = tblptr++; 5322 5323 *relptr = NULL; 5324 return section->reloc_count; 5325 } 5326 5327 extern const bfd_target hppa_som_vec; 5328 5329 /* A hook to set up object file dependent section information. */ 5330 5331 static bool 5332 som_new_section_hook (bfd *abfd, asection *newsect) 5333 { 5334 size_t amt = sizeof (struct som_section_data_struct); 5335 5336 newsect->used_by_bfd = bfd_zalloc (abfd, amt); 5337 if (!newsect->used_by_bfd) 5338 return false; 5339 5340 newsect->alignment_power = 3; 5341 5342 /* We allow more than three sections internally. */ 5343 return _bfd_generic_new_section_hook (abfd, newsect); 5344 } 5345 5346 /* Copy any private info we understand from the input symbol 5347 to the output symbol. */ 5348 5349 static bool 5350 som_bfd_copy_private_symbol_data (bfd *ibfd, 5351 asymbol **isymbol, 5352 bfd *obfd ATTRIBUTE_UNUSED, 5353 asymbol **osymbol) 5354 { 5355 if (ibfd->xvec->flavour != bfd_target_som_flavour) 5356 { 5357 /* The som backend makes use of som specific symbol fields 5358 when outputting symbols. */ 5359 asymbol *osym = som_make_empty_symbol (obfd); 5360 if (osym == NULL) 5361 return false; 5362 memcpy (osym, *isymbol, sizeof (*osym)); 5363 osym->the_bfd = obfd; 5364 return true; 5365 } 5366 5367 /* The only private information we need to copy is the argument relocation 5368 bits. */ 5369 struct som_symbol *input_symbol = (struct som_symbol *) *isymbol; 5370 struct som_symbol *output_symbol = (struct som_symbol *) *osymbol; 5371 output_symbol->tc_data.ap.hppa_arg_reloc = 5372 input_symbol->tc_data.ap.hppa_arg_reloc; 5373 5374 return true; 5375 } 5376 5377 /* Copy any private info we understand from the input section 5378 to the output section. */ 5379 5380 static bool 5381 som_bfd_copy_private_section_data (bfd *ibfd, 5382 asection *isection, 5383 bfd *obfd, 5384 asection *osection, 5385 struct bfd_link_info *link_info) 5386 { 5387 /* One day we may try to grok other private data. */ 5388 if (link_info != NULL 5389 || ibfd->xvec->flavour != bfd_target_som_flavour 5390 || (!som_is_space (isection) && !som_is_subspace (isection))) 5391 return true; 5392 5393 size_t amt = sizeof (struct som_copyable_section_data_struct); 5394 som_section_data (osection)->copy_data = bfd_zalloc (obfd, amt); 5395 if (som_section_data (osection)->copy_data == NULL) 5396 return false; 5397 5398 memcpy (som_section_data (osection)->copy_data, 5399 som_section_data (isection)->copy_data, 5400 sizeof (struct som_copyable_section_data_struct)); 5401 5402 /* Reparent if necessary. */ 5403 if (som_section_data (osection)->copy_data->container) 5404 { 5405 if (som_section_data (osection)->copy_data->container->output_section) 5406 som_section_data (osection)->copy_data->container = 5407 som_section_data (osection)->copy_data->container->output_section; 5408 else 5409 { 5410 /* User has specified a subspace without its containing space. */ 5411 _bfd_error_handler (_("%pB[%pA]: no output section for space %pA"), 5412 obfd, osection, 5413 som_section_data (osection)->copy_data->container); 5414 return false; 5415 } 5416 } 5417 5418 return true; 5419 } 5420 5421 /* Copy any private info we understand from the input bfd 5422 to the output bfd. */ 5423 5424 static bool 5425 som_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) 5426 { 5427 /* One day we may try to grok other private data. */ 5428 if (ibfd->xvec->flavour != bfd_target_som_flavour) 5429 return true; 5430 5431 /* Allocate some memory to hold the data we need. */ 5432 obj_som_exec_data (obfd) = bfd_zalloc (obfd, (bfd_size_type) sizeof (struct som_exec_data)); 5433 if (obj_som_exec_data (obfd) == NULL) 5434 return false; 5435 5436 /* Now copy the data. */ 5437 memcpy (obj_som_exec_data (obfd), obj_som_exec_data (ibfd), 5438 sizeof (struct som_exec_data)); 5439 5440 return true; 5441 } 5442 5443 /* Display the SOM header. */ 5444 5445 static bool 5446 som_bfd_print_private_bfd_data (bfd *abfd, void *farg) 5447 { 5448 struct som_exec_auxhdr *exec_header; 5449 struct som_aux_id* auxhdr; 5450 FILE *f; 5451 5452 f = (FILE *) farg; 5453 5454 exec_header = obj_som_exec_hdr (abfd); 5455 if (exec_header) 5456 { 5457 fprintf (f, _("\nExec Auxiliary Header\n")); 5458 fprintf (f, " flags "); 5459 auxhdr = &exec_header->som_auxhdr; 5460 if (auxhdr->mandatory) 5461 fprintf (f, "mandatory "); 5462 if (auxhdr->copy) 5463 fprintf (f, "copy "); 5464 if (auxhdr->append) 5465 fprintf (f, "append "); 5466 if (auxhdr->ignore) 5467 fprintf (f, "ignore "); 5468 fprintf (f, "\n"); 5469 fprintf (f, " type %#x\n", auxhdr->type); 5470 fprintf (f, " length %#x\n", auxhdr->length); 5471 5472 /* Note that, depending on the HP-UX version, the following fields can be 5473 either ints, or longs. */ 5474 5475 fprintf (f, " text size %#lx\n", (long) exec_header->exec_tsize); 5476 fprintf (f, " text memory offset %#lx\n", (long) exec_header->exec_tmem); 5477 fprintf (f, " text file offset %#lx\n", (long) exec_header->exec_tfile); 5478 fprintf (f, " data size %#lx\n", (long) exec_header->exec_dsize); 5479 fprintf (f, " data memory offset %#lx\n", (long) exec_header->exec_dmem); 5480 fprintf (f, " data file offset %#lx\n", (long) exec_header->exec_dfile); 5481 fprintf (f, " bss size %#lx\n", (long) exec_header->exec_bsize); 5482 fprintf (f, " entry point %#lx\n", (long) exec_header->exec_entry); 5483 fprintf (f, " loader flags %#lx\n", (long) exec_header->exec_flags); 5484 fprintf (f, " bss initializer %#lx\n", (long) exec_header->exec_bfill); 5485 } 5486 5487 return true; 5488 } 5489 5490 /* Set backend info for sections which can not be described 5491 in the BFD data structures. */ 5492 5493 bool 5494 bfd_som_set_section_attributes (asection *section, 5495 int defined, 5496 int private, 5497 unsigned int sort_key, 5498 int spnum) 5499 { 5500 /* Allocate memory to hold the magic information. */ 5501 if (som_section_data (section)->copy_data == NULL) 5502 { 5503 size_t amt = sizeof (struct som_copyable_section_data_struct); 5504 5505 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt); 5506 if (som_section_data (section)->copy_data == NULL) 5507 return false; 5508 } 5509 som_section_data (section)->copy_data->sort_key = sort_key; 5510 som_section_data (section)->copy_data->is_defined = defined; 5511 som_section_data (section)->copy_data->is_private = private; 5512 som_section_data (section)->copy_data->container = section; 5513 som_section_data (section)->copy_data->space_number = spnum; 5514 return true; 5515 } 5516 5517 /* Set backend info for subsections which can not be described 5518 in the BFD data structures. */ 5519 5520 bool 5521 bfd_som_set_subsection_attributes (asection *section, 5522 asection *container, 5523 int access_ctr, 5524 unsigned int sort_key, 5525 int quadrant, 5526 int comdat, 5527 int common, 5528 int dup_common) 5529 { 5530 /* Allocate memory to hold the magic information. */ 5531 if (som_section_data (section)->copy_data == NULL) 5532 { 5533 size_t amt = sizeof (struct som_copyable_section_data_struct); 5534 5535 som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt); 5536 if (som_section_data (section)->copy_data == NULL) 5537 return false; 5538 } 5539 som_section_data (section)->copy_data->sort_key = sort_key; 5540 som_section_data (section)->copy_data->access_control_bits = access_ctr; 5541 som_section_data (section)->copy_data->quadrant = quadrant; 5542 som_section_data (section)->copy_data->container = container; 5543 som_section_data (section)->copy_data->is_comdat = comdat; 5544 som_section_data (section)->copy_data->is_common = common; 5545 som_section_data (section)->copy_data->dup_common = dup_common; 5546 return true; 5547 } 5548 5549 /* Set the full SOM symbol type. SOM needs far more symbol information 5550 than any other object file format I'm aware of. It is mandatory 5551 to be able to know if a symbol is an entry point, millicode, data, 5552 code, absolute, storage request, or procedure label. If you get 5553 the symbol type wrong your program will not link. */ 5554 5555 void 5556 bfd_som_set_symbol_type (asymbol *symbol, unsigned int type) 5557 { 5558 som_symbol_data (symbol)->som_type = type; 5559 } 5560 5561 /* Attach an auxiliary header to the BFD backend so that it may be 5562 written into the object file. */ 5563 5564 bool 5565 bfd_som_attach_aux_hdr (bfd *abfd, int type, char *string) 5566 { 5567 size_t amt; 5568 5569 if (type == VERSION_AUX_ID) 5570 { 5571 size_t len = strlen (string); 5572 int pad = 0; 5573 5574 if (len % 4) 5575 pad = (4 - (len % 4)); 5576 amt = sizeof (struct som_string_auxhdr) + len + pad; 5577 obj_som_version_hdr (abfd) = bfd_zalloc (abfd, amt); 5578 if (!obj_som_version_hdr (abfd)) 5579 return false; 5580 obj_som_version_hdr (abfd)->header_id.type = VERSION_AUX_ID; 5581 obj_som_version_hdr (abfd)->header_id.length = 4 + len + pad; 5582 obj_som_version_hdr (abfd)->string_length = len; 5583 memcpy (obj_som_version_hdr (abfd)->string, string, len); 5584 memset (obj_som_version_hdr (abfd)->string + len, 0, pad); 5585 } 5586 else if (type == COPYRIGHT_AUX_ID) 5587 { 5588 size_t len = strlen (string); 5589 int pad = 0; 5590 5591 if (len % 4) 5592 pad = (4 - (len % 4)); 5593 amt = sizeof (struct som_string_auxhdr) + len + pad; 5594 obj_som_copyright_hdr (abfd) = bfd_zalloc (abfd, amt); 5595 if (!obj_som_copyright_hdr (abfd)) 5596 return false; 5597 obj_som_copyright_hdr (abfd)->header_id.type = COPYRIGHT_AUX_ID; 5598 obj_som_copyright_hdr (abfd)->header_id.length = len + pad + 4; 5599 obj_som_copyright_hdr (abfd)->string_length = len; 5600 memcpy (obj_som_copyright_hdr (abfd)->string, string, len); 5601 memset (obj_som_copyright_hdr (abfd)->string + len, 0, pad); 5602 } 5603 return true; 5604 } 5605 5606 /* Attach a compilation unit header to the BFD backend so that it may be 5607 written into the object file. */ 5608 5609 bool 5610 bfd_som_attach_compilation_unit (bfd *abfd, 5611 const char *name, 5612 const char *language_name, 5613 const char *product_id, 5614 const char *version_id) 5615 { 5616 struct som_compilation_unit *n; 5617 5618 n = (struct som_compilation_unit *) bfd_zalloc 5619 (abfd, (bfd_size_type) sizeof (*n)); 5620 if (n == NULL) 5621 return false; 5622 5623 #define STRDUP(f) \ 5624 if (f != NULL) \ 5625 { \ 5626 n->f.name = bfd_alloc (abfd, (bfd_size_type) strlen (f) + 1); \ 5627 if (n->f.name == NULL) \ 5628 return false; \ 5629 strcpy (n->f.name, f); \ 5630 } 5631 5632 STRDUP (name); 5633 STRDUP (language_name); 5634 STRDUP (product_id); 5635 STRDUP (version_id); 5636 5637 #undef STRDUP 5638 5639 obj_som_compilation_unit (abfd) = n; 5640 5641 return true; 5642 } 5643 5644 static bool 5645 som_get_section_contents (bfd *abfd, 5646 sec_ptr section, 5647 void *location, 5648 file_ptr offset, 5649 bfd_size_type count) 5650 { 5651 if (count == 0 || ((section->flags & SEC_HAS_CONTENTS) == 0)) 5652 return true; 5653 if ((bfd_size_type) (offset + count) > section->size 5654 || bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 5655 || bfd_read (location, count, abfd) != count) 5656 return false; /* On error. */ 5657 return true; 5658 } 5659 5660 static bool 5661 som_set_section_contents (bfd *abfd, 5662 sec_ptr section, 5663 const void *location, 5664 file_ptr offset, 5665 bfd_size_type count) 5666 { 5667 if (! abfd->output_has_begun) 5668 { 5669 /* Set up fixed parts of the file, space, and subspace headers. 5670 Notify the world that output has begun. */ 5671 som_prep_headers (abfd); 5672 abfd->output_has_begun = true; 5673 /* Start writing the object file. This include all the string 5674 tables, fixup streams, and other portions of the object file. */ 5675 som_begin_writing (abfd); 5676 } 5677 5678 /* Only write subspaces which have "real" contents (eg. the contents 5679 are not generated at run time by the OS). */ 5680 if (!som_is_subspace (section) 5681 || ((section->flags & SEC_HAS_CONTENTS) == 0)) 5682 return true; 5683 5684 /* Seek to the proper offset within the object file and write the 5685 data. */ 5686 offset += som_section_data (section)->subspace_dict->file_loc_init_value; 5687 if (bfd_seek (abfd, offset, SEEK_SET) != 0) 5688 return false; 5689 5690 if (bfd_write (location, count, abfd) != count) 5691 return false; 5692 return true; 5693 } 5694 5695 static bool 5696 som_set_arch_mach (bfd *abfd, 5697 enum bfd_architecture arch, 5698 unsigned long machine) 5699 { 5700 /* Allow any architecture to be supported by the SOM backend. */ 5701 return bfd_default_set_arch_mach (abfd, arch, machine); 5702 } 5703 5704 static bool 5705 som_find_nearest_line (bfd *abfd, 5706 asymbol **symbols, 5707 asection *section, 5708 bfd_vma offset, 5709 const char **filename_ptr, 5710 const char **functionname_ptr, 5711 unsigned int *line_ptr, 5712 unsigned int *discriminator_ptr) 5713 { 5714 bool found; 5715 asymbol *func; 5716 bfd_vma low_func; 5717 asymbol **p; 5718 5719 if (discriminator_ptr) 5720 *discriminator_ptr = 0; 5721 5722 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, 5723 & found, filename_ptr, 5724 functionname_ptr, line_ptr, 5725 & somdata (abfd).line_info)) 5726 return false; 5727 5728 if (found) 5729 return true; 5730 5731 if (symbols == NULL) 5732 return false; 5733 5734 /* Fallback: find function name from symbols table. */ 5735 func = NULL; 5736 low_func = 0; 5737 5738 for (p = symbols; *p != NULL; p++) 5739 { 5740 som_symbol_type *q = (som_symbol_type *) *p; 5741 5742 if (q->som_type == SYMBOL_TYPE_ENTRY 5743 && q->symbol.section == section 5744 && q->symbol.value >= low_func 5745 && q->symbol.value <= offset) 5746 { 5747 func = (asymbol *) q; 5748 low_func = q->symbol.value; 5749 } 5750 } 5751 5752 if (func == NULL) 5753 return false; 5754 5755 *filename_ptr = NULL; 5756 *functionname_ptr = bfd_asymbol_name (func); 5757 *line_ptr = 0; 5758 5759 return true; 5760 } 5761 5762 static int 5763 som_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, 5764 struct bfd_link_info *info ATTRIBUTE_UNUSED) 5765 { 5766 _bfd_error_handler (_("som_sizeof_headers unimplemented")); 5767 abort (); 5768 return 0; 5769 } 5770 5771 /* Return the single-character symbol type corresponding to 5772 SOM section S, or '?' for an unknown SOM section. */ 5773 5774 static char 5775 som_section_type (const char *s) 5776 { 5777 const struct section_to_type *t; 5778 5779 for (t = &stt[0]; t->section; t++) 5780 if (!strcmp (s, t->section)) 5781 return t->type; 5782 return '?'; 5783 } 5784 5785 static int 5786 som_decode_symclass (asymbol *symbol) 5787 { 5788 char c; 5789 5790 /* If the symbol did not have a scope specified, 5791 then it will not have associated section. */ 5792 if (symbol == NULL || symbol->section == NULL) 5793 return '?'; 5794 5795 if (bfd_is_com_section (symbol->section)) 5796 return 'C'; 5797 if (bfd_is_und_section (symbol->section)) 5798 { 5799 if (symbol->flags & BSF_WEAK) 5800 { 5801 /* If weak, determine if it's specifically an object 5802 or non-object weak. */ 5803 if (symbol->flags & BSF_OBJECT) 5804 return 'v'; 5805 else 5806 return 'w'; 5807 } 5808 else 5809 return 'U'; 5810 } 5811 if (bfd_is_ind_section (symbol->section)) 5812 return 'I'; 5813 if (symbol->flags & BSF_WEAK) 5814 { 5815 /* If weak, determine if it's specifically an object 5816 or non-object weak. */ 5817 if (symbol->flags & BSF_OBJECT) 5818 return 'V'; 5819 else 5820 return 'W'; 5821 } 5822 if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL))) 5823 return '?'; 5824 5825 if (bfd_is_abs_section (symbol->section) 5826 || (som_symbol_data (symbol) != NULL 5827 && som_symbol_data (symbol)->som_type == SYMBOL_TYPE_ABSOLUTE)) 5828 c = 'a'; 5829 else if (symbol->section) 5830 c = som_section_type (symbol->section->name); 5831 else 5832 return '?'; 5833 if (symbol->flags & BSF_GLOBAL) 5834 c = TOUPPER (c); 5835 return c; 5836 } 5837 5838 /* Return information about SOM symbol SYMBOL in RET. */ 5839 5840 static void 5841 som_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED, 5842 asymbol *symbol, 5843 symbol_info *ret) 5844 { 5845 ret->type = som_decode_symclass (symbol); 5846 if (ret->type != 'U') 5847 ret->value = symbol->value + symbol->section->vma; 5848 else 5849 ret->value = 0; 5850 ret->name = symbol->name; 5851 } 5852 5853 /* Count the number of symbols in the archive symbol table. Necessary 5854 so that we can allocate space for all the carsyms at once. */ 5855 5856 static bool 5857 som_bfd_count_ar_symbols (bfd *abfd, 5858 struct som_lst_header *lst_header, 5859 symindex *count) 5860 { 5861 unsigned int i; 5862 unsigned char *hash_table; 5863 size_t amt; 5864 file_ptr lst_filepos; 5865 5866 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header); 5867 5868 /* Read in the hash table. The hash table is an array of 32-bit 5869 file offsets which point to the hash chains. */ 5870 if (_bfd_mul_overflow (lst_header->hash_size, 4, &amt)) 5871 { 5872 bfd_set_error (bfd_error_file_too_big); 5873 return false; 5874 } 5875 hash_table = _bfd_malloc_and_read (abfd, amt, amt); 5876 if (hash_table == NULL && lst_header->hash_size != 0) 5877 goto error_return; 5878 5879 /* Don't forget to initialize the counter! */ 5880 *count = 0; 5881 5882 /* Walk each chain counting the number of symbols found on that particular 5883 chain. */ 5884 for (i = 0; i < lst_header->hash_size; i++) 5885 { 5886 struct som_external_lst_symbol_record ext_lst_symbol; 5887 unsigned int hash_val = bfd_getb32 (hash_table + 4 * i); 5888 5889 /* An empty chain has zero as it's file offset. */ 5890 if (hash_val == 0) 5891 continue; 5892 5893 /* Seek to the first symbol in this hash chain. */ 5894 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0) 5895 goto error_return; 5896 5897 /* Read in this symbol and update the counter. */ 5898 amt = sizeof (ext_lst_symbol); 5899 if (bfd_read (&ext_lst_symbol, amt, abfd) != amt) 5900 goto error_return; 5901 5902 (*count)++; 5903 5904 /* Now iterate through the rest of the symbols on this chain. */ 5905 while (1) 5906 { 5907 unsigned int next_entry = bfd_getb32 (ext_lst_symbol.next_entry); 5908 5909 if (next_entry == 0) 5910 break; 5911 5912 /* Assume symbols on a chain are in increasing file offset 5913 order. Otherwise we can loop here with fuzzed input. */ 5914 if (next_entry < hash_val + sizeof (ext_lst_symbol)) 5915 { 5916 bfd_set_error (bfd_error_bad_value); 5917 goto error_return; 5918 } 5919 hash_val = next_entry; 5920 5921 /* Seek to the next symbol. */ 5922 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0) 5923 goto error_return; 5924 5925 /* Read the symbol in and update the counter. */ 5926 amt = sizeof (ext_lst_symbol); 5927 if (bfd_read (&ext_lst_symbol, amt, abfd) != amt) 5928 goto error_return; 5929 5930 (*count)++; 5931 } 5932 } 5933 free (hash_table); 5934 return true; 5935 5936 error_return: 5937 free (hash_table); 5938 return false; 5939 } 5940 5941 /* Fill in the canonical archive symbols (SYMS) from the archive described 5942 by ABFD and LST_HEADER. */ 5943 5944 static bool 5945 som_bfd_fill_in_ar_symbols (bfd *abfd, 5946 struct som_lst_header *lst_header, 5947 carsym **syms) 5948 { 5949 unsigned int i; 5950 carsym *set = syms[0]; 5951 unsigned char *hash_table; 5952 struct som_external_som_entry *som_dict = NULL; 5953 size_t amt; 5954 file_ptr lst_filepos; 5955 unsigned int string_loc; 5956 5957 lst_filepos = bfd_tell (abfd) - sizeof (struct som_external_lst_header); 5958 5959 /* Read in the hash table. The has table is an array of 32bit file offsets 5960 which point to the hash chains. */ 5961 if (_bfd_mul_overflow (lst_header->hash_size, 4, &amt)) 5962 { 5963 bfd_set_error (bfd_error_file_too_big); 5964 return false; 5965 } 5966 hash_table = _bfd_malloc_and_read (abfd, amt, amt); 5967 if (hash_table == NULL && lst_header->hash_size != 0) 5968 goto error_return; 5969 5970 /* Seek to and read in the SOM dictionary. We will need this to fill 5971 in the carsym's filepos field. */ 5972 if (bfd_seek (abfd, lst_filepos + lst_header->dir_loc, SEEK_SET) != 0) 5973 goto error_return; 5974 5975 if (_bfd_mul_overflow (lst_header->module_count, 5976 sizeof (struct som_external_som_entry), &amt)) 5977 { 5978 bfd_set_error (bfd_error_file_too_big); 5979 goto error_return; 5980 } 5981 som_dict = (struct som_external_som_entry *) 5982 _bfd_malloc_and_read (abfd, amt, amt); 5983 if (som_dict == NULL && lst_header->module_count != 0) 5984 goto error_return; 5985 5986 string_loc = lst_header->string_loc; 5987 5988 /* Walk each chain filling in the carsyms as we go along. */ 5989 for (i = 0; i < lst_header->hash_size; i++) 5990 { 5991 struct som_external_lst_symbol_record lst_symbol; 5992 unsigned int hash_val; 5993 size_t len; 5994 unsigned char ext_len[4]; 5995 char *name; 5996 unsigned int ndx; 5997 5998 /* An empty chain has zero as it's file offset. */ 5999 hash_val = bfd_getb32 (hash_table + 4 * i); 6000 if (hash_val == 0) 6001 continue; 6002 6003 /* Seek to and read the first symbol on the chain. */ 6004 if (bfd_seek (abfd, lst_filepos + hash_val, SEEK_SET) != 0) 6005 goto error_return; 6006 6007 amt = sizeof (lst_symbol); 6008 if (bfd_read (&lst_symbol, amt, abfd) != amt) 6009 goto error_return; 6010 6011 /* Get the name of the symbol, first get the length which is stored 6012 as a 32bit integer just before the symbol. 6013 6014 One might ask why we don't just read in the entire string table 6015 and index into it. Well, according to the SOM ABI the string 6016 index can point *anywhere* in the archive to save space, so just 6017 using the string table would not be safe. */ 6018 if (bfd_seek (abfd, (lst_filepos + string_loc 6019 + bfd_getb32 (lst_symbol.name) - 4), SEEK_SET) != 0) 6020 goto error_return; 6021 6022 if (bfd_read (&ext_len, 4, abfd) != 4) 6023 goto error_return; 6024 len = bfd_getb32 (ext_len); 6025 6026 /* Allocate space for the name and null terminate it too. */ 6027 if (len == (size_t) -1) 6028 { 6029 bfd_set_error (bfd_error_no_memory); 6030 goto error_return; 6031 } 6032 name = (char *) _bfd_alloc_and_read (abfd, len + 1, len); 6033 if (!name) 6034 goto error_return; 6035 name[len] = 0; 6036 set->name = name; 6037 6038 /* Fill in the file offset. Note that the "location" field points 6039 to the SOM itself, not the ar_hdr in front of it. */ 6040 ndx = bfd_getb32 (lst_symbol.som_index); 6041 if (ndx >= lst_header->module_count) 6042 { 6043 bfd_set_error (bfd_error_bad_value); 6044 goto error_return; 6045 } 6046 set->file_offset 6047 = bfd_getb32 (som_dict[ndx].location) - sizeof (struct ar_hdr); 6048 6049 /* Go to the next symbol. */ 6050 set++; 6051 6052 /* Iterate through the rest of the chain. */ 6053 while (1) 6054 { 6055 unsigned int next_entry = bfd_getb32 (lst_symbol.next_entry); 6056 6057 if (next_entry == 0) 6058 break; 6059 6060 /* Seek to the next symbol and read it in. */ 6061 if (bfd_seek (abfd, lst_filepos + next_entry, SEEK_SET) != 0) 6062 goto error_return; 6063 6064 amt = sizeof (lst_symbol); 6065 if (bfd_read (&lst_symbol, amt, abfd) != amt) 6066 goto error_return; 6067 6068 /* Seek to the name length & string and read them in. */ 6069 if (bfd_seek (abfd, lst_filepos + string_loc 6070 + bfd_getb32 (lst_symbol.name) - 4, SEEK_SET) != 0) 6071 goto error_return; 6072 6073 if (bfd_read (&ext_len, 4, abfd) != 4) 6074 goto error_return; 6075 len = bfd_getb32 (ext_len); 6076 6077 /* Allocate space for the name and null terminate it too. */ 6078 if (len == (size_t) -1) 6079 { 6080 bfd_set_error (bfd_error_no_memory); 6081 goto error_return; 6082 } 6083 name = (char *) _bfd_alloc_and_read (abfd, len + 1, len); 6084 if (!name) 6085 goto error_return; 6086 name[len] = 0; 6087 set->name = name; 6088 6089 /* Fill in the file offset. Note that the "location" field points 6090 to the SOM itself, not the ar_hdr in front of it. */ 6091 ndx = bfd_getb32 (lst_symbol.som_index); 6092 if (ndx >= lst_header->module_count) 6093 { 6094 bfd_set_error (bfd_error_bad_value); 6095 goto error_return; 6096 } 6097 set->file_offset 6098 = bfd_getb32 (som_dict[ndx].location) - sizeof (struct ar_hdr); 6099 6100 /* Go on to the next symbol. */ 6101 set++; 6102 } 6103 } 6104 /* If we haven't died by now, then we successfully read the entire 6105 archive symbol table. */ 6106 free (hash_table); 6107 free (som_dict); 6108 return true; 6109 6110 error_return: 6111 free (hash_table); 6112 free (som_dict); 6113 return false; 6114 } 6115 6116 /* Read in the LST from the archive. */ 6117 6118 static bool 6119 som_slurp_armap (bfd *abfd) 6120 { 6121 struct som_external_lst_header ext_lst_header; 6122 struct som_lst_header lst_header; 6123 struct ar_hdr ar_header; 6124 unsigned int parsed_size; 6125 struct artdata *ardata = bfd_ardata (abfd); 6126 char nextname[17]; 6127 size_t amt = 16; 6128 int i = bfd_read (nextname, amt, abfd); 6129 6130 /* Special cases. */ 6131 if (i == 0) 6132 return true; 6133 if (i != 16) 6134 return false; 6135 6136 if (bfd_seek (abfd, -16, SEEK_CUR) != 0) 6137 return false; 6138 6139 /* For archives without .o files there is no symbol table. */ 6140 if (! startswith (nextname, "/ ")) 6141 { 6142 abfd->has_armap = false; 6143 return true; 6144 } 6145 6146 /* Read in and sanity check the archive header. */ 6147 amt = sizeof (struct ar_hdr); 6148 if (bfd_read (&ar_header, amt, abfd) != amt) 6149 return false; 6150 6151 if (strncmp (ar_header.ar_fmag, ARFMAG, 2)) 6152 { 6153 bfd_set_error (bfd_error_malformed_archive); 6154 return false; 6155 } 6156 6157 /* How big is the archive symbol table entry? */ 6158 errno = 0; 6159 parsed_size = strtol (ar_header.ar_size, NULL, 10); 6160 if (errno != 0) 6161 { 6162 bfd_set_error (bfd_error_malformed_archive); 6163 return false; 6164 } 6165 6166 /* Save off the file offset of the first real user data. */ 6167 ardata->first_file_filepos = bfd_tell (abfd) + parsed_size; 6168 6169 /* Read in the library symbol table. We'll make heavy use of this 6170 in just a minute. */ 6171 amt = sizeof (struct som_external_lst_header); 6172 if (bfd_read (&ext_lst_header, amt, abfd) != amt) 6173 return false; 6174 6175 som_swap_lst_header_in (&ext_lst_header, &lst_header); 6176 6177 /* Sanity check. */ 6178 if (lst_header.a_magic != LIBMAGIC) 6179 { 6180 bfd_set_error (bfd_error_malformed_archive); 6181 return false; 6182 } 6183 6184 /* Count the number of symbols in the library symbol table. */ 6185 if (! som_bfd_count_ar_symbols (abfd, &lst_header, &ardata->symdef_count)) 6186 return false; 6187 6188 /* Get back to the start of the library symbol table. */ 6189 if (bfd_seek (abfd, (ardata->first_file_filepos - parsed_size 6190 + sizeof (struct som_external_lst_header)), 6191 SEEK_SET) != 0) 6192 return false; 6193 6194 /* Initialize the cache and allocate space for the library symbols. */ 6195 ardata->cache = 0; 6196 if (_bfd_mul_overflow (ardata->symdef_count, sizeof (carsym), &amt)) 6197 { 6198 bfd_set_error (bfd_error_file_too_big); 6199 return false; 6200 } 6201 ardata->symdefs = bfd_alloc (abfd, amt); 6202 if (!ardata->symdefs) 6203 return false; 6204 6205 /* Now fill in the canonical archive symbols. */ 6206 if (! som_bfd_fill_in_ar_symbols (abfd, &lst_header, &ardata->symdefs)) 6207 return false; 6208 6209 /* Seek back to the "first" file in the archive. Note the "first" 6210 file may be the extended name table. */ 6211 if (bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET) != 0) 6212 return false; 6213 6214 /* Notify the generic archive code that we have a symbol map. */ 6215 abfd->has_armap = true; 6216 return true; 6217 } 6218 6219 /* Begin preparing to write a SOM library symbol table. 6220 6221 As part of the prep work we need to determine the number of symbols 6222 and the size of the associated string section. */ 6223 6224 static bool 6225 som_bfd_prep_for_ar_write (bfd *abfd, 6226 unsigned int *num_syms, 6227 unsigned int *stringsize) 6228 { 6229 bfd *curr_bfd = abfd->archive_head; 6230 6231 /* Some initialization. */ 6232 *num_syms = 0; 6233 *stringsize = 0; 6234 6235 /* Iterate over each BFD within this archive. */ 6236 while (curr_bfd != NULL) 6237 { 6238 unsigned int curr_count, i; 6239 som_symbol_type *sym; 6240 6241 /* Don't bother for non-SOM objects. */ 6242 if (curr_bfd->format != bfd_object 6243 || curr_bfd->xvec->flavour != bfd_target_som_flavour) 6244 { 6245 curr_bfd = curr_bfd->archive_next; 6246 continue; 6247 } 6248 6249 /* Make sure the symbol table has been read, then snag a pointer 6250 to it. It's a little slimey to grab the symbols via obj_som_symtab, 6251 but doing so avoids allocating lots of extra memory. */ 6252 if (! som_slurp_symbol_table (curr_bfd)) 6253 return false; 6254 6255 sym = obj_som_symtab (curr_bfd); 6256 curr_count = bfd_get_symcount (curr_bfd); 6257 6258 /* Examine each symbol to determine if it belongs in the 6259 library symbol table. */ 6260 for (i = 0; i < curr_count; i++, sym++) 6261 { 6262 struct som_misc_symbol_info info; 6263 6264 /* Derive SOM information from the BFD symbol. */ 6265 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info); 6266 6267 /* Should we include this symbol? */ 6268 if (info.symbol_type == ST_NULL 6269 || info.symbol_type == ST_SYM_EXT 6270 || info.symbol_type == ST_ARG_EXT) 6271 continue; 6272 6273 /* Only global symbols and unsatisfied commons. */ 6274 if (info.symbol_scope != SS_UNIVERSAL 6275 && info.symbol_type != ST_STORAGE) 6276 continue; 6277 6278 /* Do no include undefined symbols. */ 6279 if (bfd_is_und_section (sym->symbol.section)) 6280 continue; 6281 6282 /* Bump the various counters, being careful to honor 6283 alignment considerations in the string table. */ 6284 (*num_syms)++; 6285 *stringsize += strlen (sym->symbol.name) + 5; 6286 while (*stringsize % 4) 6287 (*stringsize)++; 6288 } 6289 6290 curr_bfd = curr_bfd->archive_next; 6291 } 6292 return true; 6293 } 6294 6295 /* Hash a symbol name based on the hashing algorithm presented in the 6296 SOM ABI. */ 6297 6298 static unsigned int 6299 som_bfd_ar_symbol_hash (asymbol *symbol) 6300 { 6301 unsigned int len = strlen (symbol->name); 6302 6303 /* Names with length 1 are special. */ 6304 if (len == 1) 6305 return 0x1000100 | (symbol->name[0] << 16) | symbol->name[0]; 6306 6307 return ((len & 0x7f) << 24) | (symbol->name[1] << 16) 6308 | (symbol->name[len - 2] << 8) | symbol->name[len - 1]; 6309 } 6310 6311 /* Do the bulk of the work required to write the SOM library 6312 symbol table. */ 6313 6314 static bool 6315 som_bfd_ar_write_symbol_stuff (bfd *abfd, 6316 unsigned int nsyms, 6317 unsigned int string_size, 6318 struct som_external_lst_header lst, 6319 unsigned elength) 6320 { 6321 char *strings = NULL, *p; 6322 struct som_external_lst_symbol_record *lst_syms = NULL, *curr_lst_sym; 6323 bfd *curr_bfd; 6324 unsigned char *hash_table = NULL; 6325 struct som_external_som_entry *som_dict = NULL; 6326 struct som_external_lst_symbol_record **last_hash_entry = NULL; 6327 unsigned int curr_som_offset, som_index = 0; 6328 size_t amt; 6329 unsigned int module_count; 6330 unsigned int hash_size; 6331 6332 hash_size = bfd_getb32 (lst.hash_size); 6333 if (_bfd_mul_overflow (hash_size, 4, &amt)) 6334 { 6335 bfd_set_error (bfd_error_no_memory); 6336 return false; 6337 } 6338 hash_table = bfd_zmalloc (amt); 6339 if (hash_table == NULL && hash_size != 0) 6340 goto error_return; 6341 6342 module_count = bfd_getb32 (lst.module_count); 6343 if (_bfd_mul_overflow (module_count, 6344 sizeof (struct som_external_som_entry), &amt)) 6345 { 6346 bfd_set_error (bfd_error_no_memory); 6347 goto error_return; 6348 } 6349 som_dict = bfd_zmalloc (amt); 6350 if (som_dict == NULL && module_count != 0) 6351 goto error_return; 6352 6353 if (_bfd_mul_overflow (hash_size, 6354 sizeof (struct som_external_lst_symbol_record *), 6355 &amt)) 6356 { 6357 bfd_set_error (bfd_error_no_memory); 6358 goto error_return; 6359 } 6360 last_hash_entry = bfd_zmalloc (amt); 6361 if (last_hash_entry == NULL && hash_size != 0) 6362 goto error_return; 6363 6364 /* Symbols have som_index fields, so we have to keep track of the 6365 index of each SOM in the archive. 6366 6367 The SOM dictionary has (among other things) the absolute file 6368 position for the SOM which a particular dictionary entry 6369 describes. We have to compute that information as we iterate 6370 through the SOMs/symbols. */ 6371 som_index = 0; 6372 6373 /* We add in the size of the archive header twice as the location 6374 in the SOM dictionary is the actual offset of the SOM, not the 6375 archive header before the SOM. */ 6376 curr_som_offset = 8 + 2 * sizeof (struct ar_hdr) + bfd_getb32 (lst.file_end); 6377 6378 /* Make room for the archive header and the contents of the 6379 extended string table. Note that elength includes the size 6380 of the archive header for the extended name table! */ 6381 if (elength) 6382 curr_som_offset += elength; 6383 6384 /* Make sure we're properly aligned. */ 6385 curr_som_offset = (curr_som_offset + 0x1) & ~0x1; 6386 6387 /* FIXME should be done with buffers just like everything else... */ 6388 if (_bfd_mul_overflow (nsyms, 6389 sizeof (struct som_external_lst_symbol_record), &amt)) 6390 { 6391 bfd_set_error (bfd_error_no_memory); 6392 goto error_return; 6393 } 6394 lst_syms = bfd_malloc (amt); 6395 if (lst_syms == NULL && nsyms != 0) 6396 goto error_return; 6397 strings = bfd_malloc (string_size); 6398 if (strings == NULL && string_size != 0) 6399 goto error_return; 6400 6401 p = strings; 6402 curr_lst_sym = lst_syms; 6403 6404 curr_bfd = abfd->archive_head; 6405 while (curr_bfd != NULL) 6406 { 6407 unsigned int curr_count, i; 6408 som_symbol_type *sym; 6409 6410 /* Don't bother for non-SOM objects. */ 6411 if (curr_bfd->format != bfd_object 6412 || curr_bfd->xvec->flavour != bfd_target_som_flavour) 6413 { 6414 curr_bfd = curr_bfd->archive_next; 6415 continue; 6416 } 6417 6418 /* Make sure the symbol table has been read, then snag a pointer 6419 to it. It's a little slimey to grab the symbols via obj_som_symtab, 6420 but doing so avoids allocating lots of extra memory. */ 6421 if (! som_slurp_symbol_table (curr_bfd)) 6422 goto error_return; 6423 6424 sym = obj_som_symtab (curr_bfd); 6425 curr_count = bfd_get_symcount (curr_bfd); 6426 6427 for (i = 0; i < curr_count; i++, sym++) 6428 { 6429 struct som_misc_symbol_info info; 6430 struct som_external_lst_symbol_record *last; 6431 unsigned int symbol_pos; 6432 unsigned int slen; 6433 unsigned int symbol_key; 6434 unsigned int flags; 6435 6436 /* Derive SOM information from the BFD symbol. */ 6437 som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info); 6438 6439 /* Should we include this symbol? */ 6440 if (info.symbol_type == ST_NULL 6441 || info.symbol_type == ST_SYM_EXT 6442 || info.symbol_type == ST_ARG_EXT) 6443 continue; 6444 6445 /* Only global symbols and unsatisfied commons. */ 6446 if (info.symbol_scope != SS_UNIVERSAL 6447 && info.symbol_type != ST_STORAGE) 6448 continue; 6449 6450 /* Do no include undefined symbols. */ 6451 if (bfd_is_und_section (sym->symbol.section)) 6452 continue; 6453 6454 /* If this is the first symbol from this SOM, then update 6455 the SOM dictionary too. */ 6456 if (bfd_getb32 (som_dict[som_index].location) == 0) 6457 { 6458 bfd_putb32 (curr_som_offset, som_dict[som_index].location); 6459 bfd_putb32 (arelt_size (curr_bfd), som_dict[som_index].length); 6460 } 6461 6462 symbol_key = som_bfd_ar_symbol_hash (&sym->symbol); 6463 6464 /* Fill in the lst symbol record. */ 6465 flags = 0; 6466 if (info.secondary_def) 6467 flags |= LST_SYMBOL_SECONDARY_DEF; 6468 flags |= info.symbol_type << LST_SYMBOL_SYMBOL_TYPE_SH; 6469 flags |= info.symbol_scope << LST_SYMBOL_SYMBOL_SCOPE_SH; 6470 if (bfd_is_com_section (sym->symbol.section)) 6471 flags |= LST_SYMBOL_IS_COMMON; 6472 if (info.dup_common) 6473 flags |= LST_SYMBOL_DUP_COMMON; 6474 flags |= 3 << LST_SYMBOL_XLEAST_SH; 6475 flags |= info.arg_reloc << LST_SYMBOL_ARG_RELOC_SH; 6476 bfd_putb32 (flags, curr_lst_sym->flags); 6477 bfd_putb32 (p - strings + 4, curr_lst_sym->name); 6478 bfd_putb32 (0, curr_lst_sym->qualifier_name); 6479 bfd_putb32 (info.symbol_info, curr_lst_sym->symbol_info); 6480 bfd_putb32 (info.symbol_value | info.priv_level, 6481 curr_lst_sym->symbol_value); 6482 bfd_putb32 (0, curr_lst_sym->symbol_descriptor); 6483 curr_lst_sym->reserved = 0; 6484 bfd_putb32 (som_index, curr_lst_sym->som_index); 6485 bfd_putb32 (symbol_key, curr_lst_sym->symbol_key); 6486 bfd_putb32 (0, curr_lst_sym->next_entry); 6487 6488 /* Insert into the hash table. */ 6489 symbol_pos = 6490 (curr_lst_sym - lst_syms) 6491 * sizeof (struct som_external_lst_symbol_record) 6492 + hash_size * 4 6493 + module_count * sizeof (struct som_external_som_entry) 6494 + sizeof (struct som_external_lst_header); 6495 last = last_hash_entry[symbol_key % hash_size]; 6496 if (last != NULL) 6497 { 6498 /* There is already something at the head of this hash chain, 6499 so tack this symbol onto the end of the chain. */ 6500 bfd_putb32 (symbol_pos, last->next_entry); 6501 } 6502 else 6503 /* First entry in this hash chain. */ 6504 bfd_putb32 (symbol_pos, hash_table + 4 * (symbol_key % hash_size)); 6505 6506 /* Keep track of the last symbol we added to this chain so we can 6507 easily update its next_entry pointer. */ 6508 last_hash_entry[symbol_key % hash_size] = curr_lst_sym; 6509 6510 /* Update the string table. */ 6511 slen = strlen (sym->symbol.name); 6512 bfd_put_32 (abfd, slen, p); 6513 p += 4; 6514 slen++; /* Nul terminator. */ 6515 memcpy (p, sym->symbol.name, slen); 6516 p += slen; 6517 while (slen % 4) 6518 { 6519 bfd_put_8 (abfd, 0, p); 6520 p++; 6521 slen++; 6522 } 6523 BFD_ASSERT (p <= strings + string_size); 6524 6525 /* Head to the next symbol. */ 6526 curr_lst_sym++; 6527 } 6528 6529 /* Keep track of where each SOM will finally reside; then look 6530 at the next BFD. */ 6531 curr_som_offset += arelt_size (curr_bfd) + sizeof (struct ar_hdr); 6532 6533 /* A particular object in the archive may have an odd length; the 6534 linker requires objects begin on an even boundary. So round 6535 up the current offset as necessary. */ 6536 curr_som_offset = (curr_som_offset + 0x1) &~ (unsigned) 1; 6537 curr_bfd = curr_bfd->archive_next; 6538 som_index++; 6539 } 6540 6541 /* Now scribble out the hash table. */ 6542 amt = (size_t) hash_size * 4; 6543 if (bfd_write (hash_table, amt, abfd) != amt) 6544 goto error_return; 6545 6546 /* Then the SOM dictionary. */ 6547 amt = (size_t) module_count * sizeof (struct som_external_som_entry); 6548 if (bfd_write (som_dict, amt, abfd) != amt) 6549 goto error_return; 6550 6551 /* The library symbols. */ 6552 amt = (size_t) nsyms * sizeof (struct som_external_lst_symbol_record); 6553 if (bfd_write (lst_syms, amt, abfd) != amt) 6554 goto error_return; 6555 6556 /* And finally the strings. */ 6557 amt = string_size; 6558 if (bfd_write (strings, amt, abfd) != amt) 6559 goto error_return; 6560 6561 free (hash_table); 6562 free (som_dict); 6563 free (last_hash_entry); 6564 free (lst_syms); 6565 free (strings); 6566 return true; 6567 6568 error_return: 6569 free (hash_table); 6570 free (som_dict); 6571 free (last_hash_entry); 6572 free (lst_syms); 6573 free (strings); 6574 6575 return false; 6576 } 6577 6578 /* Write out the LST for the archive. 6579 6580 You'll never believe this is really how armaps are handled in SOM... */ 6581 6582 static bool 6583 som_write_armap (bfd *abfd, 6584 unsigned int elength, 6585 struct orl *map ATTRIBUTE_UNUSED, 6586 unsigned int orl_count ATTRIBUTE_UNUSED, 6587 int stridx ATTRIBUTE_UNUSED) 6588 { 6589 bfd *curr_bfd; 6590 struct stat statbuf; 6591 unsigned int i, lst_size, nsyms, stringsize; 6592 struct ar_hdr hdr; 6593 struct som_external_lst_header lst; 6594 unsigned char *p; 6595 size_t amt; 6596 unsigned int csum; 6597 unsigned int module_count; 6598 6599 /* We'll use this for the archive's date and mode later. */ 6600 if (stat (bfd_get_filename (abfd), &statbuf) != 0) 6601 { 6602 bfd_set_error (bfd_error_system_call); 6603 return false; 6604 } 6605 /* Fudge factor. */ 6606 bfd_ardata (abfd)->armap_timestamp = statbuf.st_mtime + 60; 6607 6608 /* Account for the lst header first. */ 6609 lst_size = sizeof (struct som_external_lst_header); 6610 6611 /* Start building the LST header. */ 6612 /* FIXME: Do we need to examine each element to determine the 6613 largest id number? */ 6614 bfd_putb16 (CPU_PA_RISC1_0, &lst.system_id); 6615 bfd_putb16 (LIBMAGIC, &lst.a_magic); 6616 bfd_putb32 (VERSION_ID, &lst.version_id); 6617 bfd_putb32 (0, &lst.file_time.secs); 6618 bfd_putb32 (0, &lst.file_time.nanosecs); 6619 6620 bfd_putb32 (lst_size, &lst.hash_loc); 6621 bfd_putb32 (SOM_LST_HASH_SIZE, &lst.hash_size); 6622 6623 /* Hash table is a SOM_LST_HASH_SIZE 32bit offsets. */ 6624 lst_size += 4 * SOM_LST_HASH_SIZE; 6625 6626 /* We need to count the number of SOMs in this archive. */ 6627 curr_bfd = abfd->archive_head; 6628 module_count = 0; 6629 while (curr_bfd != NULL) 6630 { 6631 /* Only true SOM objects count. */ 6632 if (curr_bfd->format == bfd_object 6633 && curr_bfd->xvec->flavour == bfd_target_som_flavour) 6634 module_count++; 6635 curr_bfd = curr_bfd->archive_next; 6636 } 6637 bfd_putb32 (module_count, &lst.module_count); 6638 bfd_putb32 (module_count, &lst.module_limit); 6639 bfd_putb32 (lst_size, &lst.dir_loc); 6640 lst_size += sizeof (struct som_external_som_entry) * module_count; 6641 6642 /* We don't support import/export tables, auxiliary headers, 6643 or free lists yet. Make the linker work a little harder 6644 to make our life easier. */ 6645 6646 bfd_putb32 (0, &lst.export_loc); 6647 bfd_putb32 (0, &lst.export_count); 6648 bfd_putb32 (0, &lst.import_loc); 6649 bfd_putb32 (0, &lst.aux_loc); 6650 bfd_putb32 (0, &lst.aux_size); 6651 6652 /* Count how many symbols we will have on the hash chains and the 6653 size of the associated string table. */ 6654 if (! som_bfd_prep_for_ar_write (abfd, &nsyms, &stringsize)) 6655 return false; 6656 6657 lst_size += sizeof (struct som_external_lst_symbol_record) * nsyms; 6658 6659 /* For the string table. One day we might actually use this info 6660 to avoid small seeks/reads when reading archives. */ 6661 bfd_putb32 (lst_size, &lst.string_loc); 6662 bfd_putb32 (stringsize, &lst.string_size); 6663 lst_size += stringsize; 6664 6665 /* SOM ABI says this must be zero. */ 6666 bfd_putb32 (0, &lst.free_list); 6667 bfd_putb32 (lst_size, &lst.file_end); 6668 6669 /* Compute the checksum. Must happen after the entire lst header 6670 has filled in. */ 6671 p = (unsigned char *) &lst; 6672 csum = 0; 6673 for (i = 0; i < sizeof (struct som_external_lst_header) - sizeof (int); 6674 i += 4) 6675 csum ^= bfd_getb32 (&p[i]); 6676 bfd_putb32 (csum, &lst.checksum); 6677 6678 sprintf (hdr.ar_name, "/ "); 6679 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%-12ld", 6680 bfd_ardata (abfd)->armap_timestamp); 6681 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 6682 statbuf.st_uid); 6683 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 6684 statbuf.st_gid); 6685 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-8o", 6686 (unsigned int)statbuf.st_mode); 6687 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10d", 6688 (int) lst_size); 6689 hdr.ar_fmag[0] = '`'; 6690 hdr.ar_fmag[1] = '\012'; 6691 6692 /* Turn any nulls into spaces. */ 6693 for (i = 0; i < sizeof (struct ar_hdr); i++) 6694 if (((char *) (&hdr))[i] == '\0') 6695 (((char *) (&hdr))[i]) = ' '; 6696 6697 /* Scribble out the ar header. */ 6698 amt = sizeof (struct ar_hdr); 6699 if (bfd_write (&hdr, amt, abfd) != amt) 6700 return false; 6701 6702 /* Now scribble out the lst header. */ 6703 amt = sizeof (struct som_external_lst_header); 6704 if (bfd_write (&lst, amt, abfd) != amt) 6705 return false; 6706 6707 /* Build and write the armap. */ 6708 if (!som_bfd_ar_write_symbol_stuff (abfd, nsyms, stringsize, lst, elength)) 6709 return false; 6710 6711 /* Done. */ 6712 return true; 6713 } 6714 6715 /* Throw away some malloc'd information for this BFD. */ 6716 6717 static bool 6718 som_bfd_free_cached_info (bfd *abfd) 6719 { 6720 if (bfd_get_format (abfd) == bfd_object 6721 || bfd_get_format (abfd) == bfd_core) 6722 { 6723 asection *o; 6724 6725 #define FREE(x) do { free (x); x = NULL; } while (0) 6726 /* Free the native string and symbol tables. */ 6727 FREE (obj_som_symtab (abfd)); 6728 FREE (obj_som_stringtab (abfd)); 6729 for (o = abfd->sections; o != NULL; o = o->next) 6730 { 6731 /* Free the native relocations. */ 6732 o->reloc_count = (unsigned) -1; 6733 FREE (som_section_data (o)->reloc_stream); 6734 /* Do not free the generic relocations as they are objalloc'ed. */ 6735 } 6736 #undef FREE 6737 } 6738 6739 /* Do not call _bfd_generic_bfd_free_cached_info here. 6740 som_write_armap needs to access the bfd objalloc memory. */ 6741 return true; 6742 } 6743 6744 /* End of miscellaneous support functions. */ 6745 6746 /* Linker support functions. */ 6747 6748 static bool 6749 som_bfd_link_split_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) 6750 { 6751 return som_is_subspace (sec) && sec->size > 240000; 6752 } 6753 6754 #define som_find_line _bfd_nosymbols_find_line 6755 #define som_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string 6756 #define som_close_and_cleanup _bfd_generic_close_and_cleanup 6757 #define som_read_ar_hdr _bfd_generic_read_ar_hdr 6758 #define som_write_ar_hdr _bfd_generic_write_ar_hdr 6759 #define som_openr_next_archived_file bfd_generic_openr_next_archived_file 6760 #define som_get_elt_at_index _bfd_generic_get_elt_at_index 6761 #define som_generic_stat_arch_elt bfd_generic_stat_arch_elt 6762 #define som_truncate_arname bfd_bsd_truncate_arname 6763 #define som_slurp_extended_name_table _bfd_slurp_extended_name_table 6764 #define som_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table 6765 #define som_update_armap_timestamp _bfd_bool_bfd_true 6766 #define som_bfd_is_target_special_symbol _bfd_bool_bfd_asymbol_false 6767 #define som_get_lineno _bfd_nosymbols_get_lineno 6768 #define som_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol 6769 #define som_read_minisymbols _bfd_generic_read_minisymbols 6770 #define som_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol 6771 #define som_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents 6772 #define som_bfd_relax_section bfd_generic_relax_section 6773 #define som_bfd_link_hash_table_create _bfd_generic_link_hash_table_create 6774 #define som_bfd_link_add_symbols _bfd_generic_link_add_symbols 6775 #define som_bfd_link_just_syms _bfd_generic_link_just_syms 6776 #define som_bfd_copy_link_hash_symbol_type \ 6777 _bfd_generic_copy_link_hash_symbol_type 6778 #define som_bfd_final_link _bfd_generic_final_link 6779 #define som_bfd_gc_sections bfd_generic_gc_sections 6780 #define som_bfd_lookup_section_flags bfd_generic_lookup_section_flags 6781 #define som_bfd_is_group_section bfd_generic_is_group_section 6782 #define som_bfd_group_name bfd_generic_group_name 6783 #define som_bfd_discard_group bfd_generic_discard_group 6784 #define som_section_already_linked _bfd_generic_section_already_linked 6785 #define som_bfd_define_common_symbol bfd_generic_define_common_symbol 6786 #define som_bfd_link_hide_symbol _bfd_generic_link_hide_symbol 6787 #define som_bfd_define_start_stop bfd_generic_define_start_stop 6788 #define som_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data 6789 #define som_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data 6790 #define som_bfd_set_private_flags _bfd_generic_bfd_set_private_flags 6791 #define som_find_inliner_info _bfd_nosymbols_find_inliner_info 6792 #define som_bfd_link_check_relocs _bfd_generic_link_check_relocs 6793 #define som_finalize_section_relocs _bfd_generic_finalize_section_relocs 6794 6795 const bfd_target hppa_som_vec = 6796 { 6797 "som", /* Name. */ 6798 bfd_target_som_flavour, 6799 BFD_ENDIAN_BIG, /* Target byte order. */ 6800 BFD_ENDIAN_BIG, /* Target headers byte order. */ 6801 (HAS_RELOC | EXEC_P | /* Object flags. */ 6802 HAS_LINENO | HAS_DEBUG | 6803 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | DYNAMIC), 6804 (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | SEC_LINK_ONCE 6805 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ 6806 6807 /* Leading_symbol_char: is the first char of a user symbol 6808 predictable, and if so what is it. */ 6809 0, 6810 '/', /* AR_pad_char. */ 6811 14, /* AR_max_namelen. */ 6812 0, /* match priority. */ 6813 TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ 6814 TARGET_MERGE_SECTIONS, 6815 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 6816 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 6817 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ 6818 bfd_getb64, bfd_getb_signed_64, bfd_putb64, 6819 bfd_getb32, bfd_getb_signed_32, bfd_putb32, 6820 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ 6821 {_bfd_dummy_target, 6822 som_object_p, /* bfd_check_format. */ 6823 bfd_generic_archive_p, 6824 _bfd_dummy_target 6825 }, 6826 { 6827 _bfd_bool_bfd_false_error, 6828 som_mkobject, 6829 _bfd_generic_mkarchive, 6830 _bfd_bool_bfd_false_error 6831 }, 6832 { 6833 _bfd_bool_bfd_false_error, 6834 som_write_object_contents, 6835 _bfd_write_archive_contents, 6836 _bfd_bool_bfd_false_error, 6837 }, 6838 #undef som 6839 6840 BFD_JUMP_TABLE_GENERIC (som), 6841 BFD_JUMP_TABLE_COPY (som), 6842 BFD_JUMP_TABLE_CORE (_bfd_nocore), 6843 BFD_JUMP_TABLE_ARCHIVE (som), 6844 BFD_JUMP_TABLE_SYMBOLS (som), 6845 BFD_JUMP_TABLE_RELOCS (som), 6846 BFD_JUMP_TABLE_WRITE (som), 6847 BFD_JUMP_TABLE_LINK (som), 6848 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 6849 6850 NULL, 6851 6852 NULL 6853 }; 6854 6855
Indexes created Tue Feb 24 01:34:59 UTC 2026