ecoff.c revision 1.1.1.1.2.1
1 /* ECOFF debugging support. 2 Copyright (C) 1993-2015 Free Software Foundation, Inc. 3 Contributed by Cygnus Support. 4 This file was put together by Ian Lance Taylor <ian (at) cygnus.com>. A 5 good deal of it comes directly from mips-tfile.c, by Michael 6 Meissner <meissner (at) osf.org>. 7 8 This file is part of GAS. 9 10 GAS is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 GAS is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with GAS; see the file COPYING. If not, write to the Free 22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 23 02110-1301, USA. */ 24 25 #include "as.h" 26 27 /* This file is compiled conditionally for those targets which use 28 ECOFF debugging information (e.g., MIPS ELF, Alpha ECOFF). */ 29 30 #include "ecoff.h" 31 32 #ifdef ECOFF_DEBUGGING 33 34 #include "coff/internal.h" 35 #include "coff/symconst.h" 36 #include "aout/stab_gnu.h" 37 #include "filenames.h" 38 #include "safe-ctype.h" 39 40 /* Why isn't this in coff/sym.h? */ 41 #define ST_RFDESCAPE 0xfff 42 43 /* This file constructs the information used by the ECOFF debugging 44 format. It just builds a large block of data. 45 46 We support both ECOFF style debugging and stabs debugging (the 47 stabs symbols are encapsulated in ECOFF symbols). This should let 48 us handle anything the compiler might throw at us. */ 49 50 /* Here is a brief description of the MIPS ECOFF symbol table, by 51 Michael Meissner. The MIPS symbol table has the following pieces: 52 53 Symbolic Header 54 | 55 +-- Auxiliary Symbols 56 | 57 +-- Dense number table 58 | 59 +-- Optimizer Symbols 60 | 61 +-- External Strings 62 | 63 +-- External Symbols 64 | 65 +-- Relative file descriptors 66 | 67 +-- File table 68 | 69 +-- Procedure table 70 | 71 +-- Line number table 72 | 73 +-- Local Strings 74 | 75 +-- Local Symbols 76 77 The symbolic header points to each of the other tables, and also 78 contains the number of entries. It also contains a magic number 79 and MIPS compiler version number, such as 2.0. 80 81 The auxiliary table is a series of 32 bit integers, that are 82 referenced as needed from the local symbol table. Unlike standard 83 COFF, the aux. information does not follow the symbol that uses 84 it, but rather is a separate table. In theory, this would allow 85 the MIPS compilers to collapse duplicate aux. entries, but I've not 86 noticed this happening with the 1.31 compiler suite. The different 87 types of aux. entries are: 88 89 1) dnLow: Low bound on array dimension. 90 91 2) dnHigh: High bound on array dimension. 92 93 3) isym: Index to the local symbol which is the start of the 94 function for the end of function first aux. entry. 95 96 4) width: Width of structures and bitfields. 97 98 5) count: Count of ranges for variant part. 99 100 6) rndx: A relative index into the symbol table. The relative 101 index field has two parts: rfd which is a pointer into the 102 relative file index table or ST_RFDESCAPE which says the next 103 aux. entry is the file number, and index: which is the pointer 104 into the local symbol within a given file table. This is for 105 things like references to types defined in another file. 106 107 7) Type information: This is like the COFF type bits, except it 108 is 32 bits instead of 16; they still have room to add new 109 basic types; and they can handle more than 6 levels of array, 110 pointer, function, etc. Each type information field contains 111 the following structure members: 112 113 a) fBitfield: a bit that says this is a bitfield, and the 114 size in bits follows as the next aux. entry. 115 116 b) continued: a bit that says the next aux. entry is a 117 continuation of the current type information (in case 118 there are more than 6 levels of array/ptr/function). 119 120 c) bt: an integer containing the base type before adding 121 array, pointer, function, etc. qualifiers. The 122 current base types that I have documentation for are: 123 124 btNil -- undefined 125 btAdr -- address - integer same size as ptr 126 btChar -- character 127 btUChar -- unsigned character 128 btShort -- short 129 btUShort -- unsigned short 130 btInt -- int 131 btUInt -- unsigned int 132 btLong -- long 133 btULong -- unsigned long 134 btFloat -- float (real) 135 btDouble -- Double (real) 136 btStruct -- Structure (Record) 137 btUnion -- Union (variant) 138 btEnum -- Enumerated 139 btTypedef -- defined via a typedef isymRef 140 btRange -- subrange of int 141 btSet -- pascal sets 142 btComplex -- fortran complex 143 btDComplex -- fortran double complex 144 btIndirect -- forward or unnamed typedef 145 btFixedDec -- Fixed Decimal 146 btFloatDec -- Float Decimal 147 btString -- Varying Length Character String 148 btBit -- Aligned Bit String 149 btPicture -- Picture 150 btVoid -- Void (MIPS cc revision >= 2.00) 151 152 d) tq0 - tq5: type qualifier fields as needed. The 153 current type qualifier fields I have documentation for 154 are: 155 156 tqNil -- no more qualifiers 157 tqPtr -- pointer 158 tqProc -- procedure 159 tqArray -- array 160 tqFar -- 8086 far pointers 161 tqVol -- volatile 162 163 The dense number table is used in the front ends, and disappears by 164 the time the .o is created. 165 166 With the 1.31 compiler suite, the optimization symbols don't seem 167 to be used as far as I can tell. 168 169 The linker is the first entity that creates the relative file 170 descriptor table, and I believe it is used so that the individual 171 file table pointers don't have to be rewritten when the objects are 172 merged together into the program file. 173 174 Unlike COFF, the basic symbol & string tables are split into 175 external and local symbols/strings. The relocation information 176 only goes off of the external symbol table, and the debug 177 information only goes off of the internal symbol table. The 178 external symbols can have links to an appropriate file index and 179 symbol within the file to give it the appropriate type information. 180 Because of this, the external symbols are actually larger than the 181 internal symbols (to contain the link information), and contain the 182 local symbol structure as a member, though this member is not the 183 first member of the external symbol structure (!). I suspect this 184 split is to make strip easier to deal with. 185 186 Each file table has offsets for where the line numbers, local 187 strings, local symbols, and procedure table starts from within the 188 global tables, and the indexs are reset to 0 for each of those 189 tables for the file. 190 191 The procedure table contains the binary equivalents of the .ent 192 (start of the function address), .frame (what register is the 193 virtual frame pointer, constant offset from the register to obtain 194 the VFP, and what register holds the return address), .mask/.fmask 195 (bitmask of saved registers, and where the first register is stored 196 relative to the VFP) assembler directives. It also contains the 197 low and high bounds of the line numbers if debugging is turned on. 198 199 The line number table is a compressed form of the normal COFF line 200 table. Each line number entry is either 1 or 3 bytes long, and 201 contains a signed delta from the previous line, and an unsigned 202 count of the number of instructions this statement takes. 203 204 The local symbol table contains the following fields: 205 206 1) iss: index to the local string table giving the name of the 207 symbol. 208 209 2) value: value of the symbol (address, register number, etc.). 210 211 3) st: symbol type. The current symbol types are: 212 213 stNil -- Nuthin' special 214 stGlobal -- external symbol 215 stStatic -- static 216 stParam -- procedure argument 217 stLocal -- local variable 218 stLabel -- label 219 stProc -- External Procedure 220 stBlock -- beginning of block 221 stEnd -- end (of anything) 222 stMember -- member (of anything) 223 stTypedef -- type definition 224 stFile -- file name 225 stRegReloc -- register relocation 226 stForward -- forwarding address 227 stStaticProc -- Static procedure 228 stConstant -- const 229 230 4) sc: storage class. The current storage classes are: 231 232 scText -- text symbol 233 scData -- initialized data symbol 234 scBss -- un-initialized data symbol 235 scRegister -- value of symbol is register number 236 scAbs -- value of symbol is absolute 237 scUndefined -- who knows? 238 scCdbLocal -- variable's value is IN se->va.?? 239 scBits -- this is a bit field 240 scCdbSystem -- value is IN debugger's address space 241 scRegImage -- register value saved on stack 242 scInfo -- symbol contains debugger information 243 scUserStruct -- addr in struct user for current process 244 scSData -- load time only small data 245 scSBss -- load time only small common 246 scRData -- load time only read only data 247 scVar -- Var parameter (fortranpascal) 248 scCommon -- common variable 249 scSCommon -- small common 250 scVarRegister -- Var parameter in a register 251 scVariant -- Variant record 252 scSUndefined -- small undefined(external) data 253 scInit -- .init section symbol 254 255 5) index: pointer to a local symbol or aux. entry. 256 257 For the following program: 258 259 #include <stdio.h> 260 261 main(){ 262 printf("Hello World!\n"); 263 return 0; 264 } 265 266 Mips-tdump produces the following information: 267 268 Global file header: 269 magic number 0x162 270 # sections 2 271 timestamp 645311799, Wed Jun 13 17:16:39 1990 272 symbolic header offset 284 273 symbolic header size 96 274 optional header 56 275 flags 0x0 276 277 Symbolic header, magic number = 0x7009, vstamp = 1.31: 278 279 Info Offset Number Bytes 280 ==== ====== ====== ===== 281 282 Line numbers 380 4 4 [13] 283 Dense numbers 0 0 0 284 Procedures Tables 384 1 52 285 Local Symbols 436 16 192 286 Optimization Symbols 0 0 0 287 Auxiliary Symbols 628 39 156 288 Local Strings 784 80 80 289 External Strings 864 144 144 290 File Tables 1008 2 144 291 Relative Files 0 0 0 292 External Symbols 1152 20 320 293 294 File #0, "hello2.c" 295 296 Name index = 1 Readin = No 297 Merge = No Endian = LITTLE 298 Debug level = G2 Language = C 299 Adr = 0x00000000 300 301 Info Start Number Size Offset 302 ==== ===== ====== ==== ====== 303 Local strings 0 15 15 784 304 Local symbols 0 6 72 436 305 Line numbers 0 13 13 380 306 Optimization symbols 0 0 0 0 307 Procedures 0 1 52 384 308 Auxiliary symbols 0 14 56 628 309 Relative Files 0 0 0 0 310 311 There are 6 local symbols, starting at 436 312 313 Symbol# 0: "hello2.c" 314 End+1 symbol = 6 315 String index = 1 316 Storage class = Text Index = 6 317 Symbol type = File Value = 0 318 319 Symbol# 1: "main" 320 End+1 symbol = 5 321 Type = int 322 String index = 10 323 Storage class = Text Index = 12 324 Symbol type = Proc Value = 0 325 326 Symbol# 2: "" 327 End+1 symbol = 4 328 String index = 0 329 Storage class = Text Index = 4 330 Symbol type = Block Value = 8 331 332 Symbol# 3: "" 333 First symbol = 2 334 String index = 0 335 Storage class = Text Index = 2 336 Symbol type = End Value = 28 337 338 Symbol# 4: "main" 339 First symbol = 1 340 String index = 10 341 Storage class = Text Index = 1 342 Symbol type = End Value = 52 343 344 Symbol# 5: "hello2.c" 345 First symbol = 0 346 String index = 1 347 Storage class = Text Index = 0 348 Symbol type = End Value = 0 349 350 There are 14 auxiliary table entries, starting at 628. 351 352 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 353 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 354 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0] 355 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0] 356 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 357 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0] 358 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0] 359 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0] 360 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0] 361 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0] 362 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0] 363 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0] 364 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0] 365 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 366 367 There are 1 procedure descriptor entries, starting at 0. 368 369 Procedure descriptor 0: 370 Name index = 10 Name = "main" 371 .mask 0x80000000,-4 .fmask 0x00000000,0 372 .frame $29,24,$31 373 Opt. start = -1 Symbols start = 1 374 First line # = 3 Last line # = 6 375 Line Offset = 0 Address = 0x00000000 376 377 There are 4 bytes holding line numbers, starting at 380. 378 Line 3, delta 0, count 2 379 Line 4, delta 1, count 3 380 Line 5, delta 1, count 2 381 Line 6, delta 1, count 6 382 383 File #1, "/usr/include/stdio.h" 384 385 Name index = 1 Readin = No 386 Merge = Yes Endian = LITTLE 387 Debug level = G2 Language = C 388 Adr = 0x00000000 389 390 Info Start Number Size Offset 391 ==== ===== ====== ==== ====== 392 Local strings 15 65 65 799 393 Local symbols 6 10 120 508 394 Line numbers 0 0 0 380 395 Optimization symbols 0 0 0 0 396 Procedures 1 0 0 436 397 Auxiliary symbols 14 25 100 684 398 Relative Files 0 0 0 0 399 400 There are 10 local symbols, starting at 442 401 402 Symbol# 0: "/usr/include/stdio.h" 403 End+1 symbol = 10 404 String index = 1 405 Storage class = Text Index = 10 406 Symbol type = File Value = 0 407 408 Symbol# 1: "_iobuf" 409 End+1 symbol = 9 410 String index = 22 411 Storage class = Info Index = 9 412 Symbol type = Block Value = 20 413 414 Symbol# 2: "_cnt" 415 Type = int 416 String index = 29 417 Storage class = Info Index = 4 418 Symbol type = Member Value = 0 419 420 Symbol# 3: "_ptr" 421 Type = ptr to char 422 String index = 34 423 Storage class = Info Index = 15 424 Symbol type = Member Value = 32 425 426 Symbol# 4: "_base" 427 Type = ptr to char 428 String index = 39 429 Storage class = Info Index = 16 430 Symbol type = Member Value = 64 431 432 Symbol# 5: "_bufsiz" 433 Type = int 434 String index = 45 435 Storage class = Info Index = 4 436 Symbol type = Member Value = 96 437 438 Symbol# 6: "_flag" 439 Type = short 440 String index = 53 441 Storage class = Info Index = 3 442 Symbol type = Member Value = 128 443 444 Symbol# 7: "_file" 445 Type = char 446 String index = 59 447 Storage class = Info Index = 2 448 Symbol type = Member Value = 144 449 450 Symbol# 8: "" 451 First symbol = 1 452 String index = 0 453 Storage class = Info Index = 1 454 Symbol type = End Value = 0 455 456 Symbol# 9: "/usr/include/stdio.h" 457 First symbol = 0 458 String index = 1 459 Storage class = Text Index = 0 460 Symbol type = End Value = 0 461 462 There are 25 auxiliary table entries, starting at 642. 463 464 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f] 465 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] 466 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] 467 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0] 468 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1] 469 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] 470 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4] 471 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] 472 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 473 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0] 474 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0] 475 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 476 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 477 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 478 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 479 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 480 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 481 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 482 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 483 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 484 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 485 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 486 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 487 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 488 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 489 490 There are 0 procedure descriptor entries, starting at 1. 491 492 There are 20 external symbols, starting at 1152 493 494 Symbol# 0: "_iob" 495 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 } 496 String index = 0 Ifd = 1 497 Storage class = Nil Index = 17 498 Symbol type = Global Value = 60 499 500 Symbol# 1: "fopen" 501 String index = 5 Ifd = 1 502 Storage class = Nil Index = 1048575 503 Symbol type = Proc Value = 0 504 505 Symbol# 2: "fdopen" 506 String index = 11 Ifd = 1 507 Storage class = Nil Index = 1048575 508 Symbol type = Proc Value = 0 509 510 Symbol# 3: "freopen" 511 String index = 18 Ifd = 1 512 Storage class = Nil Index = 1048575 513 Symbol type = Proc Value = 0 514 515 Symbol# 4: "popen" 516 String index = 26 Ifd = 1 517 Storage class = Nil Index = 1048575 518 Symbol type = Proc Value = 0 519 520 Symbol# 5: "tmpfile" 521 String index = 32 Ifd = 1 522 Storage class = Nil Index = 1048575 523 Symbol type = Proc Value = 0 524 525 Symbol# 6: "ftell" 526 String index = 40 Ifd = 1 527 Storage class = Nil Index = 1048575 528 Symbol type = Proc Value = 0 529 530 Symbol# 7: "rewind" 531 String index = 46 Ifd = 1 532 Storage class = Nil Index = 1048575 533 Symbol type = Proc Value = 0 534 535 Symbol# 8: "setbuf" 536 String index = 53 Ifd = 1 537 Storage class = Nil Index = 1048575 538 Symbol type = Proc Value = 0 539 540 Symbol# 9: "setbuffer" 541 String index = 60 Ifd = 1 542 Storage class = Nil Index = 1048575 543 Symbol type = Proc Value = 0 544 545 Symbol# 10: "setlinebuf" 546 String index = 70 Ifd = 1 547 Storage class = Nil Index = 1048575 548 Symbol type = Proc Value = 0 549 550 Symbol# 11: "fgets" 551 String index = 81 Ifd = 1 552 Storage class = Nil Index = 1048575 553 Symbol type = Proc Value = 0 554 555 Symbol# 12: "gets" 556 String index = 87 Ifd = 1 557 Storage class = Nil Index = 1048575 558 Symbol type = Proc Value = 0 559 560 Symbol# 13: "ctermid" 561 String index = 92 Ifd = 1 562 Storage class = Nil Index = 1048575 563 Symbol type = Proc Value = 0 564 565 Symbol# 14: "cuserid" 566 String index = 100 Ifd = 1 567 Storage class = Nil Index = 1048575 568 Symbol type = Proc Value = 0 569 570 Symbol# 15: "tempnam" 571 String index = 108 Ifd = 1 572 Storage class = Nil Index = 1048575 573 Symbol type = Proc Value = 0 574 575 Symbol# 16: "tmpnam" 576 String index = 116 Ifd = 1 577 Storage class = Nil Index = 1048575 578 Symbol type = Proc Value = 0 579 580 Symbol# 17: "sprintf" 581 String index = 123 Ifd = 1 582 Storage class = Nil Index = 1048575 583 Symbol type = Proc Value = 0 584 585 Symbol# 18: "main" 586 Type = int 587 String index = 131 Ifd = 0 588 Storage class = Text Index = 1 589 Symbol type = Proc Value = 0 590 591 Symbol# 19: "printf" 592 String index = 136 Ifd = 0 593 Storage class = Undefined Index = 1048575 594 Symbol type = Proc Value = 0 595 596 The following auxiliary table entries were unused: 597 598 #0 0 0x00000000 void 599 #2 8 0x00000008 char 600 #3 16 0x00000010 short 601 #4 24 0x00000018 int 602 #5 32 0x00000020 long 603 #6 40 0x00000028 float 604 #7 44 0x0000002c double 605 #8 12 0x0000000c unsigned char 606 #9 20 0x00000014 unsigned short 607 #10 28 0x0000001c unsigned int 608 #11 36 0x00000024 unsigned long 609 #14 0 0x00000000 void 610 #15 24 0x00000018 int 611 #19 32 0x00000020 long 612 #20 40 0x00000028 float 613 #21 44 0x0000002c double 614 #22 12 0x0000000c unsigned char 615 #23 20 0x00000014 unsigned short 616 #24 28 0x0000001c unsigned int 617 #25 36 0x00000024 unsigned long 618 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 } 619 */ 620 621 /* Redefinition of of storage classes as an enumeration for better 623 debugging. */ 624 625 typedef enum sc { 626 sc_Nil = scNil, /* no storage class */ 627 sc_Text = scText, /* text symbol */ 628 sc_Data = scData, /* initialized data symbol */ 629 sc_Bss = scBss, /* un-initialized data symbol */ 630 sc_Register = scRegister, /* value of symbol is register number */ 631 sc_Abs = scAbs, /* value of symbol is absolute */ 632 sc_Undefined = scUndefined, /* who knows? */ 633 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */ 634 sc_Bits = scBits, /* this is a bit field */ 635 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */ 636 sc_RegImage = scRegImage, /* register value saved on stack */ 637 sc_Info = scInfo, /* symbol contains debugger information */ 638 sc_UserStruct = scUserStruct, /* addr in struct user for current process */ 639 sc_SData = scSData, /* load time only small data */ 640 sc_SBss = scSBss, /* load time only small common */ 641 sc_RData = scRData, /* load time only read only data */ 642 sc_Var = scVar, /* Var parameter (fortran,pascal) */ 643 sc_Common = scCommon, /* common variable */ 644 sc_SCommon = scSCommon, /* small common */ 645 sc_VarRegister = scVarRegister, /* Var parameter in a register */ 646 sc_Variant = scVariant, /* Variant record */ 647 sc_SUndefined = scSUndefined, /* small undefined(external) data */ 648 sc_Init = scInit, /* .init section symbol */ 649 sc_Max = scMax /* Max storage class+1 */ 650 } sc_t; 651 652 /* Redefinition of symbol type. */ 653 654 typedef enum st { 655 st_Nil = stNil, /* Nuthin' special */ 656 st_Global = stGlobal, /* external symbol */ 657 st_Static = stStatic, /* static */ 658 st_Param = stParam, /* procedure argument */ 659 st_Local = stLocal, /* local variable */ 660 st_Label = stLabel, /* label */ 661 st_Proc = stProc, /* " " Procedure */ 662 st_Block = stBlock, /* beginning of block */ 663 st_End = stEnd, /* end (of anything) */ 664 st_Member = stMember, /* member (of anything - struct/union/enum */ 665 st_Typedef = stTypedef, /* type definition */ 666 st_File = stFile, /* file name */ 667 st_RegReloc = stRegReloc, /* register relocation */ 668 st_Forward = stForward, /* forwarding address */ 669 st_StaticProc = stStaticProc, /* load time only static procs */ 670 st_Constant = stConstant, /* const */ 671 st_Str = stStr, /* string */ 672 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */ 673 st_Expr = stExpr, /* 2+2 vs. 4 */ 674 st_Type = stType, /* post-coercion SER */ 675 st_Max = stMax /* max type+1 */ 676 } st_t; 677 678 /* Redefinition of type qualifiers. */ 679 680 typedef enum tq { 681 tq_Nil = tqNil, /* bt is what you see */ 682 tq_Ptr = tqPtr, /* pointer */ 683 tq_Proc = tqProc, /* procedure */ 684 tq_Array = tqArray, /* duh */ 685 tq_Far = tqFar, /* longer addressing - 8086/8 land */ 686 tq_Vol = tqVol, /* volatile */ 687 tq_Max = tqMax /* Max type qualifier+1 */ 688 } tq_t; 689 690 /* Redefinition of basic types. */ 691 692 typedef enum bt { 693 bt_Nil = btNil, /* undefined */ 694 bt_Adr = btAdr, /* address - integer same size as pointer */ 695 bt_Char = btChar, /* character */ 696 bt_UChar = btUChar, /* unsigned character */ 697 bt_Short = btShort, /* short */ 698 bt_UShort = btUShort, /* unsigned short */ 699 bt_Int = btInt, /* int */ 700 bt_UInt = btUInt, /* unsigned int */ 701 bt_Long = btLong, /* long */ 702 bt_ULong = btULong, /* unsigned long */ 703 bt_Float = btFloat, /* float (real) */ 704 bt_Double = btDouble, /* Double (real) */ 705 bt_Struct = btStruct, /* Structure (Record) */ 706 bt_Union = btUnion, /* Union (variant) */ 707 bt_Enum = btEnum, /* Enumerated */ 708 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */ 709 bt_Range = btRange, /* subrange of int */ 710 bt_Set = btSet, /* pascal sets */ 711 bt_Complex = btComplex, /* fortran complex */ 712 bt_DComplex = btDComplex, /* fortran double complex */ 713 bt_Indirect = btIndirect, /* forward or unnamed typedef */ 714 bt_FixedDec = btFixedDec, /* Fixed Decimal */ 715 bt_FloatDec = btFloatDec, /* Float Decimal */ 716 bt_String = btString, /* Varying Length Character String */ 717 bt_Bit = btBit, /* Aligned Bit String */ 718 bt_Picture = btPicture, /* Picture */ 719 bt_Void = btVoid, /* Void */ 720 bt_Max = btMax /* Max basic type+1 */ 721 } bt_t; 722 723 #define N_TQ itqMax 724 725 /* States for whether to hash type or not. */ 726 typedef enum hash_state { 727 hash_no = 0, /* Don't hash type */ 728 hash_yes = 1, /* OK to hash type, or use previous hash */ 729 hash_record = 2 /* OK to record hash, but don't use prev. */ 730 } hash_state_t; 731 732 /* Types of different sized allocation requests. */ 733 enum alloc_type { 734 alloc_type_none, /* dummy value */ 735 alloc_type_scope, /* nested scopes linked list */ 736 alloc_type_vlinks, /* glue linking pages in varray */ 737 alloc_type_shash, /* string hash element */ 738 alloc_type_thash, /* type hash element */ 739 alloc_type_tag, /* struct/union/tag element */ 740 alloc_type_forward, /* element to hold unknown tag */ 741 alloc_type_thead, /* head of type hash list */ 742 alloc_type_varray, /* general varray allocation */ 743 alloc_type_lineno, /* line number list */ 744 alloc_type_last /* last+1 element for array bounds */ 745 }; 746 747 /* Types of auxiliary type information. */ 748 enum aux_type { 749 aux_tir, /* TIR type information */ 750 aux_rndx, /* relative index into symbol table */ 751 aux_dnLow, /* low dimension */ 752 aux_dnHigh, /* high dimension */ 753 aux_isym, /* symbol table index (end of proc) */ 754 aux_iss, /* index into string space (not used) */ 755 aux_width, /* width for non-default sized struc fields */ 756 aux_count /* count of ranges for variant arm */ 757 }; 758 759 /* Structures to provide n-number of virtual arrays, each of which can 761 grow linearly, and which are written in the object file as 762 sequential pages. On systems with a BSD malloc, the 763 MAX_CLUSTER_PAGES should be 1 less than a power of two, since 764 malloc adds it's overhead, and rounds up to the next power of 2. 765 Pages are linked together via a linked list. 766 767 If PAGE_SIZE is > 4096, the string length in the shash_t structure 768 can't be represented (assuming there are strings > 4096 bytes). */ 769 770 /* FIXME: Yes, there can be such strings while emitting C++ class debug 771 info. Templates are the offender here, the test case in question 772 having a mangled class name of 773 774 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\ 775 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey 776 777 Repeat that a couple dozen times while listing the class members and 778 you've got strings over 4k. Hack around this for now by increasing 779 the page size. A proper solution would abandon this structure scheme 780 certainly for very large strings, and possibly entirely. */ 781 782 #ifndef PAGE_SIZE 783 #define PAGE_SIZE (8*1024) /* size of varray pages */ 784 #endif 785 786 #define PAGE_USIZE ((unsigned long) PAGE_SIZE) 787 788 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */ 789 #define MAX_CLUSTER_PAGES 63 790 #endif 791 792 /* Linked list connecting separate page allocations. */ 793 typedef struct vlinks { 794 struct vlinks *prev; /* previous set of pages */ 795 struct vlinks *next; /* next set of pages */ 796 union page *datum; /* start of page */ 797 unsigned long start_index; /* starting index # of page */ 798 } vlinks_t; 799 800 /* Virtual array header. */ 801 typedef struct varray { 802 vlinks_t *first; /* first page link */ 803 vlinks_t *last; /* last page link */ 804 unsigned long num_allocated; /* # objects allocated */ 805 unsigned short object_size; /* size in bytes of each object */ 806 unsigned short objects_per_page; /* # objects that can fit on a page */ 807 unsigned short objects_last_page; /* # objects allocated on last page */ 808 } varray_t; 809 810 #ifndef MALLOC_CHECK 811 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type)) 812 #else 813 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE) 814 #endif 815 816 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \ 817 (vlinks_t *)0, /* first */ \ 818 (vlinks_t *)0, /* last */ \ 819 0, /* num_allocated */ \ 820 sizeof (type), /* object_size */ \ 821 OBJECTS_PER_PAGE (type), /* objects_per_page */ \ 822 OBJECTS_PER_PAGE (type), /* objects_last_page */ \ 823 } 824 825 /* Master type for indexes within the symbol table. */ 826 typedef unsigned long symint_t; 827 828 /* Linked list support for nested scopes (file, block, structure, etc.). */ 829 typedef struct scope { 830 struct scope *prev; /* previous scope level */ 831 struct scope *free; /* free list pointer */ 832 struct localsym *lsym; /* pointer to local symbol node */ 833 st_t type; /* type of the node */ 834 } scope_t; 835 836 /* For a local symbol we store a gas symbol as well as the debugging 837 information we generate. The gas symbol will be NULL if this is 838 only a debugging symbol. */ 839 typedef struct localsym { 840 const char *name; /* symbol name */ 841 symbolS *as_sym; /* symbol as seen by gas */ 842 bfd_vma addend; /* addend to as_sym value */ 843 struct efdr *file_ptr; /* file pointer */ 844 struct ecoff_proc *proc_ptr; /* proc pointer */ 845 struct localsym *begin_ptr; /* symbol at start of block */ 846 struct ecoff_aux *index_ptr; /* index value to be filled in */ 847 struct forward *forward_ref; /* forward references to this symbol */ 848 long sym_index; /* final symbol index */ 849 EXTR ecoff_sym; /* ECOFF debugging symbol */ 850 } localsym_t; 851 852 /* For aux information we keep the type and the data. */ 853 typedef struct ecoff_aux { 854 enum aux_type type; /* aux type */ 855 AUXU data; /* aux data */ 856 } aux_t; 857 858 /* For a procedure we store the gas symbol as well as the PDR 859 debugging information. */ 860 typedef struct ecoff_proc { 861 localsym_t *sym; /* associated symbol */ 862 PDR pdr; /* ECOFF debugging info */ 863 } proc_t; 864 865 /* Number of proc_t structures allocated. */ 866 static unsigned long proc_cnt; 867 868 /* Forward reference list for tags referenced, but not yet defined. */ 869 typedef struct forward { 870 struct forward *next; /* next forward reference */ 871 struct forward *free; /* free list pointer */ 872 aux_t *ifd_ptr; /* pointer to store file index */ 873 aux_t *index_ptr; /* pointer to store symbol index */ 874 } forward_t; 875 876 /* Linked list support for tags. The first tag in the list is always 877 the current tag for that block. */ 878 typedef struct tag { 879 struct tag *free; /* free list pointer */ 880 struct shash *hash_ptr; /* pointer to the hash table head */ 881 struct tag *same_name; /* tag with same name in outer scope */ 882 struct tag *same_block; /* next tag defined in the same block. */ 883 struct forward *forward_ref; /* list of forward references */ 884 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */ 885 symint_t ifd; /* file # tag defined in */ 886 localsym_t *sym; /* file's local symbols */ 887 } tag_t; 888 889 /* Head of a block's linked list of tags. */ 890 typedef struct thead { 891 struct thead *prev; /* previous block */ 892 struct thead *free; /* free list pointer */ 893 struct tag *first_tag; /* first tag in block defined */ 894 } thead_t; 895 896 /* Union containing pointers to each the small structures which are freed up. */ 897 typedef union small_free { 898 scope_t *f_scope; /* scope structure */ 899 thead_t *f_thead; /* tag head structure */ 900 tag_t *f_tag; /* tag element structure */ 901 forward_t *f_forward; /* forward tag reference */ 902 } small_free_t; 903 904 /* String hash table entry. */ 905 906 typedef struct shash { 907 char *string; /* string we are hashing */ 908 symint_t indx; /* index within string table */ 909 EXTR *esym_ptr; /* global symbol pointer */ 910 localsym_t *sym_ptr; /* local symbol pointer */ 911 localsym_t *end_ptr; /* symbol pointer to end block */ 912 tag_t *tag_ptr; /* tag pointer */ 913 proc_t *proc_ptr; /* procedure descriptor pointer */ 914 } shash_t; 915 916 /* Type hash table support. The size of the hash table must fit 917 within a page with the other extended file descriptor information. 918 Because unique types which are hashed are fewer in number than 919 strings, we use a smaller hash value. */ 920 921 #define HASHBITS 30 922 923 #ifndef THASH_SIZE 924 #define THASH_SIZE 113 925 #endif 926 927 typedef struct thash { 928 struct thash *next; /* next hash value */ 929 AUXU type; /* type we are hashing */ 930 symint_t indx; /* index within string table */ 931 } thash_t; 932 933 /* Extended file descriptor that contains all of the support necessary 934 to add things to each file separately. */ 935 typedef struct efdr { 936 FDR fdr; /* File header to be written out */ 937 FDR *orig_fdr; /* original file header */ 938 char *name; /* filename */ 939 int fake; /* whether this is faked .file */ 940 symint_t void_type; /* aux. pointer to 'void' type */ 941 symint_t int_type; /* aux. pointer to 'int' type */ 942 scope_t *cur_scope; /* current nested scopes */ 943 symint_t file_index; /* current file number */ 944 int nested_scopes; /* # nested scopes */ 945 varray_t strings; /* local strings */ 946 varray_t symbols; /* local symbols */ 947 varray_t procs; /* procedures */ 948 varray_t aux_syms; /* auxiliary symbols */ 949 struct efdr *next_file; /* next file descriptor */ 950 /* string/type hash tables */ 951 struct hash_control *str_hash; /* string hash table */ 952 thash_t *thash_head[THASH_SIZE]; 953 } efdr_t; 954 955 /* Pre-initialized extended file structure. */ 956 static const efdr_t init_file = { 957 { /* FDR structure */ 958 0, /* adr: memory address of beginning of file */ 959 0, /* rss: file name (of source, if known) */ 960 0, /* issBase: file's string space */ 961 0, /* cbSs: number of bytes in the ss */ 962 0, /* isymBase: beginning of symbols */ 963 0, /* csym: count file's of symbols */ 964 0, /* ilineBase: file's line symbols */ 965 0, /* cline: count of file's line symbols */ 966 0, /* ioptBase: file's optimization entries */ 967 0, /* copt: count of file's optimization entries */ 968 0, /* ipdFirst: start of procedures for this file */ 969 0, /* cpd: count of procedures for this file */ 970 0, /* iauxBase: file's auxiliary entries */ 971 0, /* caux: count of file's auxiliary entries */ 972 0, /* rfdBase: index into the file indirect table */ 973 0, /* crfd: count file indirect entries */ 974 langC, /* lang: language for this file */ 975 1, /* fMerge: whether this file can be merged */ 976 0, /* fReadin: true if read in (not just created) */ 977 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */ 978 GLEVEL_2, /* glevel: level this file was compiled with */ 979 0, /* reserved: reserved for future use */ 980 0, /* cbLineOffset: byte offset from header for this file ln's */ 981 0, /* cbLine: size of lines for this file */ 982 }, 983 984 (FDR *)0, /* orig_fdr: original file header pointer */ 985 (char *)0, /* name: pointer to filename */ 986 0, /* fake: whether this is a faked .file */ 987 0, /* void_type: ptr to aux node for void type */ 988 0, /* int_type: ptr to aux node for int type */ 989 (scope_t *)0, /* cur_scope: current scope being processed */ 990 0, /* file_index: current file # */ 991 0, /* nested_scopes: # nested scopes */ 992 INIT_VARRAY (char), /* strings: local string varray */ 993 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */ 994 INIT_VARRAY (proc_t), /* procs: procedure varray */ 995 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */ 996 997 (struct efdr *)0, /* next_file: next file structure */ 998 999 (struct hash_control *)0, /* str_hash: string hash table */ 1000 { 0 }, /* thash_head: type hash table */ 1001 }; 1002 1003 static efdr_t *first_file; /* first file descriptor */ 1004 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */ 1005 1006 /* Line number information is kept in a list until the assembly is 1007 finished. */ 1008 typedef struct lineno_list { 1009 struct lineno_list *next; /* next element in list */ 1010 efdr_t *file; /* file this line is in */ 1011 proc_t *proc; /* procedure this line is in */ 1012 fragS *frag; /* fragment this line number is in */ 1013 unsigned long paddr; /* offset within fragment */ 1014 long lineno; /* actual line number */ 1015 } lineno_list_t; 1016 1017 static lineno_list_t *first_lineno; 1018 static lineno_list_t *last_lineno; 1019 static lineno_list_t **last_lineno_ptr = &first_lineno; 1020 1021 /* Sometimes there will be some .loc statements before a .ent. We 1022 keep them in this list so that we can fill in the procedure pointer 1023 after we see the .ent. */ 1024 static lineno_list_t *noproc_lineno; 1025 1026 /* Union of various things that are held in pages. */ 1027 typedef union page { 1028 char byte [ PAGE_SIZE ]; 1029 unsigned char ubyte [ PAGE_SIZE ]; 1030 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ]; 1031 FDR ofile [ PAGE_SIZE / sizeof (FDR) ]; 1032 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ]; 1033 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ]; 1034 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ]; 1035 DNR dense [ PAGE_SIZE / sizeof (DNR) ]; 1036 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ]; 1037 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ]; 1038 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ]; 1039 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ]; 1040 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ]; 1041 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ]; 1042 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ]; 1043 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ]; 1044 } page_type; 1045 1046 /* Structure holding allocation information for small sized structures. */ 1047 typedef struct alloc_info { 1048 char *alloc_name; /* name of this allocation type (must be first) */ 1049 page_type *cur_page; /* current page being allocated from */ 1050 small_free_t free_list; /* current free list if any */ 1051 int unallocated; /* number of elements unallocated on page */ 1052 int total_alloc; /* total number of allocations */ 1053 int total_free; /* total number of frees */ 1054 int total_pages; /* total number of pages allocated */ 1055 } alloc_info_t; 1056 1057 /* Type information collected together. */ 1058 typedef struct type_info { 1059 bt_t basic_type; /* basic type */ 1060 int orig_type; /* original COFF-based type */ 1061 int num_tq; /* # type qualifiers */ 1062 int num_dims; /* # dimensions */ 1063 int num_sizes; /* # sizes */ 1064 int extra_sizes; /* # extra sizes not tied with dims */ 1065 tag_t * tag_ptr; /* tag pointer */ 1066 int bitfield; /* symbol is a bitfield */ 1067 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/ 1068 symint_t dimensions [N_TQ]; /* dimensions for each array */ 1069 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of 1070 struct/union/enum + bitfield size */ 1071 } type_info_t; 1072 1073 /* Pre-initialized type_info struct. */ 1074 static const type_info_t type_info_init = { 1075 bt_Nil, /* basic type */ 1076 T_NULL, /* original COFF-based type */ 1077 0, /* # type qualifiers */ 1078 0, /* # dimensions */ 1079 0, /* # sizes */ 1080 0, /* sizes not tied with dims */ 1081 NULL, /* ptr to tag */ 1082 0, /* bitfield */ 1083 { /* type qualifiers */ 1084 tq_Nil, 1085 tq_Nil, 1086 tq_Nil, 1087 tq_Nil, 1088 tq_Nil, 1089 tq_Nil, 1090 }, 1091 { /* dimensions */ 1092 0, 1093 0, 1094 0, 1095 0, 1096 0, 1097 0 1098 }, 1099 { /* sizes */ 1100 0, 1101 0, 1102 0, 1103 0, 1104 0, 1105 0, 1106 0, 1107 0, 1108 }, 1109 }; 1110 1111 /* Global hash table for the tags table and global table for file 1112 descriptors. */ 1113 1114 static varray_t file_desc = INIT_VARRAY (efdr_t); 1115 1116 static struct hash_control *tag_hash; 1117 1118 /* Static types for int and void. Also, remember the last function's 1119 type (which is set up when we encounter the declaration for the 1120 function, and used when the end block for the function is emitted. */ 1121 1122 static type_info_t int_type_info; 1123 static type_info_t void_type_info; 1124 static type_info_t last_func_type_info; 1125 static symbolS *last_func_sym_value; 1126 1127 /* Convert COFF basic type to ECOFF basic type. The T_NULL type 1128 really should use bt_Void, but this causes the current ecoff GDB to 1129 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS 1130 2.0) doesn't understand it, even though the compiler generates it. 1131 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler 1132 suite, but for now go with what works. 1133 1134 It would make sense for the .type and .scl directives to use the 1135 ECOFF numbers directly, rather than using the COFF numbers and 1136 mapping them. Unfortunately, this is historically what mips-tfile 1137 expects, and changing gcc now would be a considerable pain (the 1138 native compiler generates debugging information internally, rather 1139 than via the assembler, so it will never use .type or .scl). */ 1140 1141 static const bt_t map_coff_types[] = { 1142 bt_Nil, /* T_NULL */ 1143 bt_Nil, /* T_ARG */ 1144 bt_Char, /* T_CHAR */ 1145 bt_Short, /* T_SHORT */ 1146 bt_Int, /* T_INT */ 1147 bt_Long, /* T_LONG */ 1148 bt_Float, /* T_FLOAT */ 1149 bt_Double, /* T_DOUBLE */ 1150 bt_Struct, /* T_STRUCT */ 1151 bt_Union, /* T_UNION */ 1152 bt_Enum, /* T_ENUM */ 1153 bt_Enum, /* T_MOE */ 1154 bt_UChar, /* T_UCHAR */ 1155 bt_UShort, /* T_USHORT */ 1156 bt_UInt, /* T_UINT */ 1157 bt_ULong /* T_ULONG */ 1158 }; 1159 1160 /* Convert COFF storage class to ECOFF storage class. */ 1161 static const sc_t map_coff_storage[] = { 1162 sc_Nil, /* 0: C_NULL */ 1163 sc_Abs, /* 1: C_AUTO auto var */ 1164 sc_Undefined, /* 2: C_EXT external */ 1165 sc_Data, /* 3: C_STAT static */ 1166 sc_Register, /* 4: C_REG register */ 1167 sc_Undefined, /* 5: C_EXTDEF ??? */ 1168 sc_Text, /* 6: C_LABEL label */ 1169 sc_Text, /* 7: C_ULABEL user label */ 1170 sc_Info, /* 8: C_MOS member of struct */ 1171 sc_Abs, /* 9: C_ARG argument */ 1172 sc_Info, /* 10: C_STRTAG struct tag */ 1173 sc_Info, /* 11: C_MOU member of union */ 1174 sc_Info, /* 12: C_UNTAG union tag */ 1175 sc_Info, /* 13: C_TPDEF typedef */ 1176 sc_Data, /* 14: C_USTATIC ??? */ 1177 sc_Info, /* 15: C_ENTAG enum tag */ 1178 sc_Info, /* 16: C_MOE member of enum */ 1179 sc_Register, /* 17: C_REGPARM register parameter */ 1180 sc_Bits, /* 18; C_FIELD bitfield */ 1181 sc_Nil, /* 19 */ 1182 sc_Nil, /* 20 */ 1183 sc_Nil, /* 21 */ 1184 sc_Nil, /* 22 */ 1185 sc_Nil, /* 23 */ 1186 sc_Nil, /* 24 */ 1187 sc_Nil, /* 25 */ 1188 sc_Nil, /* 26 */ 1189 sc_Nil, /* 27 */ 1190 sc_Nil, /* 28 */ 1191 sc_Nil, /* 29 */ 1192 sc_Nil, /* 30 */ 1193 sc_Nil, /* 31 */ 1194 sc_Nil, /* 32 */ 1195 sc_Nil, /* 33 */ 1196 sc_Nil, /* 34 */ 1197 sc_Nil, /* 35 */ 1198 sc_Nil, /* 36 */ 1199 sc_Nil, /* 37 */ 1200 sc_Nil, /* 38 */ 1201 sc_Nil, /* 39 */ 1202 sc_Nil, /* 40 */ 1203 sc_Nil, /* 41 */ 1204 sc_Nil, /* 42 */ 1205 sc_Nil, /* 43 */ 1206 sc_Nil, /* 44 */ 1207 sc_Nil, /* 45 */ 1208 sc_Nil, /* 46 */ 1209 sc_Nil, /* 47 */ 1210 sc_Nil, /* 48 */ 1211 sc_Nil, /* 49 */ 1212 sc_Nil, /* 50 */ 1213 sc_Nil, /* 51 */ 1214 sc_Nil, /* 52 */ 1215 sc_Nil, /* 53 */ 1216 sc_Nil, /* 54 */ 1217 sc_Nil, /* 55 */ 1218 sc_Nil, /* 56 */ 1219 sc_Nil, /* 57 */ 1220 sc_Nil, /* 58 */ 1221 sc_Nil, /* 59 */ 1222 sc_Nil, /* 60 */ 1223 sc_Nil, /* 61 */ 1224 sc_Nil, /* 62 */ 1225 sc_Nil, /* 63 */ 1226 sc_Nil, /* 64 */ 1227 sc_Nil, /* 65 */ 1228 sc_Nil, /* 66 */ 1229 sc_Nil, /* 67 */ 1230 sc_Nil, /* 68 */ 1231 sc_Nil, /* 69 */ 1232 sc_Nil, /* 70 */ 1233 sc_Nil, /* 71 */ 1234 sc_Nil, /* 72 */ 1235 sc_Nil, /* 73 */ 1236 sc_Nil, /* 74 */ 1237 sc_Nil, /* 75 */ 1238 sc_Nil, /* 76 */ 1239 sc_Nil, /* 77 */ 1240 sc_Nil, /* 78 */ 1241 sc_Nil, /* 79 */ 1242 sc_Nil, /* 80 */ 1243 sc_Nil, /* 81 */ 1244 sc_Nil, /* 82 */ 1245 sc_Nil, /* 83 */ 1246 sc_Nil, /* 84 */ 1247 sc_Nil, /* 85 */ 1248 sc_Nil, /* 86 */ 1249 sc_Nil, /* 87 */ 1250 sc_Nil, /* 88 */ 1251 sc_Nil, /* 89 */ 1252 sc_Nil, /* 90 */ 1253 sc_Nil, /* 91 */ 1254 sc_Nil, /* 92 */ 1255 sc_Nil, /* 93 */ 1256 sc_Nil, /* 94 */ 1257 sc_Nil, /* 95 */ 1258 sc_Nil, /* 96 */ 1259 sc_Nil, /* 97 */ 1260 sc_Nil, /* 98 */ 1261 sc_Nil, /* 99 */ 1262 sc_Text, /* 100: C_BLOCK block start/end */ 1263 sc_Text, /* 101: C_FCN function start/end */ 1264 sc_Info, /* 102: C_EOS end of struct/union/enum */ 1265 sc_Nil, /* 103: C_FILE file start */ 1266 sc_Nil, /* 104: C_LINE line number */ 1267 sc_Nil, /* 105: C_ALIAS combined type info */ 1268 sc_Nil, /* 106: C_HIDDEN ??? */ 1269 }; 1270 1271 /* Convert COFF storage class to ECOFF symbol type. */ 1272 static const st_t map_coff_sym_type[] = { 1273 st_Nil, /* 0: C_NULL */ 1274 st_Local, /* 1: C_AUTO auto var */ 1275 st_Global, /* 2: C_EXT external */ 1276 st_Static, /* 3: C_STAT static */ 1277 st_Local, /* 4: C_REG register */ 1278 st_Global, /* 5: C_EXTDEF ??? */ 1279 st_Label, /* 6: C_LABEL label */ 1280 st_Label, /* 7: C_ULABEL user label */ 1281 st_Member, /* 8: C_MOS member of struct */ 1282 st_Param, /* 9: C_ARG argument */ 1283 st_Block, /* 10: C_STRTAG struct tag */ 1284 st_Member, /* 11: C_MOU member of union */ 1285 st_Block, /* 12: C_UNTAG union tag */ 1286 st_Typedef, /* 13: C_TPDEF typedef */ 1287 st_Static, /* 14: C_USTATIC ??? */ 1288 st_Block, /* 15: C_ENTAG enum tag */ 1289 st_Member, /* 16: C_MOE member of enum */ 1290 st_Param, /* 17: C_REGPARM register parameter */ 1291 st_Member, /* 18; C_FIELD bitfield */ 1292 st_Nil, /* 19 */ 1293 st_Nil, /* 20 */ 1294 st_Nil, /* 21 */ 1295 st_Nil, /* 22 */ 1296 st_Nil, /* 23 */ 1297 st_Nil, /* 24 */ 1298 st_Nil, /* 25 */ 1299 st_Nil, /* 26 */ 1300 st_Nil, /* 27 */ 1301 st_Nil, /* 28 */ 1302 st_Nil, /* 29 */ 1303 st_Nil, /* 30 */ 1304 st_Nil, /* 31 */ 1305 st_Nil, /* 32 */ 1306 st_Nil, /* 33 */ 1307 st_Nil, /* 34 */ 1308 st_Nil, /* 35 */ 1309 st_Nil, /* 36 */ 1310 st_Nil, /* 37 */ 1311 st_Nil, /* 38 */ 1312 st_Nil, /* 39 */ 1313 st_Nil, /* 40 */ 1314 st_Nil, /* 41 */ 1315 st_Nil, /* 42 */ 1316 st_Nil, /* 43 */ 1317 st_Nil, /* 44 */ 1318 st_Nil, /* 45 */ 1319 st_Nil, /* 46 */ 1320 st_Nil, /* 47 */ 1321 st_Nil, /* 48 */ 1322 st_Nil, /* 49 */ 1323 st_Nil, /* 50 */ 1324 st_Nil, /* 51 */ 1325 st_Nil, /* 52 */ 1326 st_Nil, /* 53 */ 1327 st_Nil, /* 54 */ 1328 st_Nil, /* 55 */ 1329 st_Nil, /* 56 */ 1330 st_Nil, /* 57 */ 1331 st_Nil, /* 58 */ 1332 st_Nil, /* 59 */ 1333 st_Nil, /* 60 */ 1334 st_Nil, /* 61 */ 1335 st_Nil, /* 62 */ 1336 st_Nil, /* 63 */ 1337 st_Nil, /* 64 */ 1338 st_Nil, /* 65 */ 1339 st_Nil, /* 66 */ 1340 st_Nil, /* 67 */ 1341 st_Nil, /* 68 */ 1342 st_Nil, /* 69 */ 1343 st_Nil, /* 70 */ 1344 st_Nil, /* 71 */ 1345 st_Nil, /* 72 */ 1346 st_Nil, /* 73 */ 1347 st_Nil, /* 74 */ 1348 st_Nil, /* 75 */ 1349 st_Nil, /* 76 */ 1350 st_Nil, /* 77 */ 1351 st_Nil, /* 78 */ 1352 st_Nil, /* 79 */ 1353 st_Nil, /* 80 */ 1354 st_Nil, /* 81 */ 1355 st_Nil, /* 82 */ 1356 st_Nil, /* 83 */ 1357 st_Nil, /* 84 */ 1358 st_Nil, /* 85 */ 1359 st_Nil, /* 86 */ 1360 st_Nil, /* 87 */ 1361 st_Nil, /* 88 */ 1362 st_Nil, /* 89 */ 1363 st_Nil, /* 90 */ 1364 st_Nil, /* 91 */ 1365 st_Nil, /* 92 */ 1366 st_Nil, /* 93 */ 1367 st_Nil, /* 94 */ 1368 st_Nil, /* 95 */ 1369 st_Nil, /* 96 */ 1370 st_Nil, /* 97 */ 1371 st_Nil, /* 98 */ 1372 st_Nil, /* 99 */ 1373 st_Block, /* 100: C_BLOCK block start/end */ 1374 st_Proc, /* 101: C_FCN function start/end */ 1375 st_End, /* 102: C_EOS end of struct/union/enum */ 1376 st_File, /* 103: C_FILE file start */ 1377 st_Nil, /* 104: C_LINE line number */ 1378 st_Nil, /* 105: C_ALIAS combined type info */ 1379 st_Nil, /* 106: C_HIDDEN ??? */ 1380 }; 1381 1382 /* Keep track of different sized allocation requests. */ 1383 static alloc_info_t alloc_counts[(int) alloc_type_last]; 1384 1385 /* Record whether we have seen any debugging information. */ 1387 int ecoff_debugging_seen = 0; 1388 1389 /* Various statics. */ 1390 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */ 1391 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */ 1392 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */ 1393 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */ 1394 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */ 1395 #ifdef ECOFF_DEBUG 1396 static int debug = 0; /* trace functions */ 1397 #endif 1398 static int stabs_seen = 0; /* != 0 if stabs have been seen */ 1399 1400 static int current_file_idx; 1401 static const char *current_stabs_filename; 1402 1403 /* Pseudo symbol to use when putting stabs into the symbol table. */ 1404 #ifndef STABS_SYMBOL 1405 #define STABS_SYMBOL "@stabs" 1406 #endif 1407 1408 static char stabs_symbol[] = STABS_SYMBOL; 1409 1410 /* Prototypes for functions defined in this file. */ 1412 1413 static void add_varray_page (varray_t *vp); 1414 static symint_t add_string (varray_t *vp, 1415 struct hash_control *hash_tbl, 1416 const char *str, 1417 shash_t **ret_hash); 1418 static localsym_t *add_ecoff_symbol (const char *str, st_t type, 1419 sc_t storage, symbolS *sym, 1420 bfd_vma addend, symint_t value, 1421 symint_t indx); 1422 static symint_t add_aux_sym_symint (symint_t aux_word); 1423 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index); 1424 static symint_t add_aux_sym_tir (type_info_t *t, 1425 hash_state_t state, 1426 thash_t **hash_tbl); 1427 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type); 1428 static void add_unknown_tag (tag_t *ptag); 1429 static void add_procedure (char *func); 1430 static void add_file (const char *file_name, int indx, int fake); 1431 #ifdef ECOFF_DEBUG 1432 static char *sc_to_string (sc_t storage_class); 1433 static char *st_to_string (st_t symbol_type); 1434 #endif 1435 static void mark_stabs (int); 1436 static char *ecoff_add_bytes (char **buf, char **bufend, 1437 char *bufptr, unsigned long need); 1438 static unsigned long ecoff_padding_adjust 1439 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1440 unsigned long offset, char **bufptrptr); 1441 static unsigned long ecoff_build_lineno 1442 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1443 unsigned long offset, long *linecntptr); 1444 static unsigned long ecoff_build_symbols 1445 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1446 unsigned long offset); 1447 static unsigned long ecoff_build_procs 1448 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1449 unsigned long offset); 1450 static unsigned long ecoff_build_aux 1451 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1452 unsigned long offset); 1453 static unsigned long ecoff_build_strings (char **buf, char **bufend, 1454 unsigned long offset, 1455 varray_t *vp); 1456 static unsigned long ecoff_build_ss 1457 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1458 unsigned long offset); 1459 static unsigned long ecoff_build_fdr 1460 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1461 unsigned long offset); 1462 static void ecoff_setup_ext (void); 1463 static page_type *allocate_cluster (unsigned long npages); 1464 static page_type *allocate_page (void); 1465 static scope_t *allocate_scope (void); 1466 static void free_scope (scope_t *ptr); 1467 static vlinks_t *allocate_vlinks (void); 1468 static shash_t *allocate_shash (void); 1469 static thash_t *allocate_thash (void); 1470 static tag_t *allocate_tag (void); 1471 static void free_tag (tag_t *ptr); 1472 static forward_t *allocate_forward (void); 1473 static thead_t *allocate_thead (void); 1474 static void free_thead (thead_t *ptr); 1475 static lineno_list_t *allocate_lineno_list (void); 1476 1477 /* This function should be called when the assembler starts up. */ 1479 1480 void 1481 ecoff_read_begin_hook (void) 1482 { 1483 tag_hash = hash_new (); 1484 top_tag_head = allocate_thead (); 1485 top_tag_head->first_tag = (tag_t *) NULL; 1486 top_tag_head->free = (thead_t *) NULL; 1487 top_tag_head->prev = cur_tag_head; 1488 cur_tag_head = top_tag_head; 1489 } 1490 1491 /* This function should be called when a symbol is created. */ 1492 1493 void 1494 ecoff_symbol_new_hook (symbolS *symbolP) 1495 { 1496 OBJ_SYMFIELD_TYPE *obj; 1497 1498 /* Make sure that we have a file pointer, but only if we have seen a 1499 file. If we haven't seen a file, then this is a probably special 1500 symbol created by md_begin which may required special handling at 1501 some point. Creating a dummy file with a dummy name is certainly 1502 wrong. */ 1503 if (cur_file_ptr == (efdr_t *) NULL 1504 && seen_at_least_1_file ()) 1505 add_file ((const char *) NULL, 0, 1); 1506 obj = symbol_get_obj (symbolP); 1507 obj->ecoff_file = cur_file_ptr; 1508 obj->ecoff_symbol = NULL; 1509 obj->ecoff_extern_size = 0; 1510 } 1511 1512 void 1513 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) 1514 { 1515 OBJ_SYMFIELD_TYPE *n, *o; 1516 1517 n = symbol_get_obj (newsymP); 1518 o = symbol_get_obj (orgsymP); 1519 memcpy (n, o, sizeof *n); 1520 } 1521 1522 /* Add a page to a varray object. */ 1524 1525 static void 1526 add_varray_page (varray_t *vp /* varray to add page to */) 1527 { 1528 vlinks_t *new_links = allocate_vlinks (); 1529 1530 #ifdef MALLOC_CHECK 1531 if (vp->object_size > 1) 1532 new_links->datum = (page_type *) xcalloc (1, vp->object_size); 1533 else 1534 #endif 1535 new_links->datum = allocate_page (); 1536 1537 alloc_counts[(int) alloc_type_varray].total_alloc++; 1538 alloc_counts[(int) alloc_type_varray].total_pages++; 1539 1540 new_links->start_index = vp->num_allocated; 1541 vp->objects_last_page = 0; 1542 1543 if (vp->first == (vlinks_t *) NULL) /* first allocation? */ 1544 vp->first = vp->last = new_links; 1545 else 1546 { /* 2nd or greater allocation */ 1547 new_links->prev = vp->last; 1548 vp->last->next = new_links; 1549 vp->last = new_links; 1550 } 1551 } 1552 1553 /* Add a string (and null pad) to one of the string tables. */ 1555 1556 static symint_t 1557 add_string (varray_t *vp, /* string obstack */ 1558 struct hash_control *hash_tbl, /* ptr to hash table */ 1559 const char *str, /* string */ 1560 shash_t **ret_hash /* return hash pointer */) 1561 { 1562 unsigned long len = strlen (str); 1563 shash_t *hash_ptr; 1564 1565 if (len >= PAGE_USIZE) 1566 as_fatal (_("string too big (%lu bytes)"), len); 1567 1568 hash_ptr = (shash_t *) hash_find (hash_tbl, str); 1569 if (hash_ptr == (shash_t *) NULL) 1570 { 1571 const char *err; 1572 1573 if (vp->objects_last_page + len >= PAGE_USIZE) 1574 { 1575 vp->num_allocated = 1576 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE; 1577 add_varray_page (vp); 1578 } 1579 1580 hash_ptr = allocate_shash (); 1581 hash_ptr->indx = vp->num_allocated; 1582 1583 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page]; 1584 1585 vp->objects_last_page += len + 1; 1586 vp->num_allocated += len + 1; 1587 1588 strcpy (hash_ptr->string, str); 1589 1590 err = hash_insert (hash_tbl, str, (char *) hash_ptr); 1591 if (err) 1592 as_fatal (_("inserting \"%s\" into string hash table: %s"), 1593 str, err); 1594 } 1595 1596 if (ret_hash != (shash_t **) NULL) 1597 *ret_hash = hash_ptr; 1598 1599 return hash_ptr->indx; 1600 } 1601 1602 /* Add debugging information for a symbol. */ 1604 1605 static localsym_t * 1606 add_ecoff_symbol (const char *str, /* symbol name */ 1607 st_t type, /* symbol type */ 1608 sc_t storage, /* storage class */ 1609 symbolS *sym_value, /* associated symbol. */ 1610 bfd_vma addend, /* addend to sym_value. */ 1611 symint_t value, /* value of symbol */ 1612 symint_t indx /* index to local/aux. syms */) 1613 { 1614 localsym_t *psym; 1615 scope_t *pscope; 1616 thead_t *ptag_head; 1617 tag_t *ptag; 1618 tag_t *ptag_next; 1619 varray_t *vp; 1620 int scope_delta = 0; 1621 shash_t *hash_ptr = (shash_t *) NULL; 1622 1623 if (cur_file_ptr == (efdr_t *) NULL) 1624 as_fatal (_("no current file pointer")); 1625 1626 vp = &cur_file_ptr->symbols; 1627 1628 if (vp->objects_last_page == vp->objects_per_page) 1629 add_varray_page (vp); 1630 1631 psym = &vp->last->datum->sym[vp->objects_last_page++]; 1632 1633 if (str == (const char *) NULL && sym_value != (symbolS *) NULL) 1634 psym->name = S_GET_NAME (sym_value); 1635 else 1636 psym->name = str; 1637 psym->as_sym = sym_value; 1638 if (sym_value != (symbolS *) NULL) 1639 symbol_get_obj (sym_value)->ecoff_symbol = psym; 1640 psym->addend = addend; 1641 psym->file_ptr = cur_file_ptr; 1642 psym->proc_ptr = cur_proc_ptr; 1643 psym->begin_ptr = (localsym_t *) NULL; 1644 psym->index_ptr = (aux_t *) NULL; 1645 psym->forward_ref = (forward_t *) NULL; 1646 psym->sym_index = -1; 1647 memset (&psym->ecoff_sym, 0, sizeof (EXTR)); 1648 psym->ecoff_sym.asym.value = value; 1649 psym->ecoff_sym.asym.st = (unsigned) type; 1650 psym->ecoff_sym.asym.sc = (unsigned) storage; 1651 psym->ecoff_sym.asym.index = indx; 1652 1653 /* If there is an associated symbol, we wait until the end of the 1654 assembly before deciding where to put the name (it may be just an 1655 external symbol). Otherwise, this is just a debugging symbol and 1656 the name should go with the current file. */ 1657 if (sym_value == (symbolS *) NULL) 1658 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL) 1659 ? 0 1660 : add_string (&cur_file_ptr->strings, 1661 cur_file_ptr->str_hash, 1662 str, 1663 &hash_ptr)); 1664 1665 ++vp->num_allocated; 1666 1667 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym)) 1668 return psym; 1669 1670 /* Save the symbol within the hash table if this is a static 1671 item, and it has a name. */ 1672 if (hash_ptr != (shash_t *) NULL 1673 && (type == st_Global || type == st_Static || type == st_Label 1674 || type == st_Proc || type == st_StaticProc)) 1675 hash_ptr->sym_ptr = psym; 1676 1677 /* push or pop a scope if appropriate. */ 1678 switch (type) 1679 { 1680 default: 1681 break; 1682 1683 case st_File: /* beginning of file */ 1684 case st_Proc: /* procedure */ 1685 case st_StaticProc: /* static procedure */ 1686 case st_Block: /* begin scope */ 1687 pscope = allocate_scope (); 1688 pscope->prev = cur_file_ptr->cur_scope; 1689 pscope->lsym = psym; 1690 pscope->type = type; 1691 cur_file_ptr->cur_scope = pscope; 1692 1693 if (type != st_File) 1694 scope_delta = 1; 1695 1696 /* For every block type except file, struct, union, or 1697 enumeration blocks, push a level on the tag stack. We omit 1698 file types, so that tags can span file boundaries. */ 1699 if (type != st_File && storage != sc_Info) 1700 { 1701 ptag_head = allocate_thead (); 1702 ptag_head->first_tag = 0; 1703 ptag_head->prev = cur_tag_head; 1704 cur_tag_head = ptag_head; 1705 } 1706 break; 1707 1708 case st_End: 1709 pscope = cur_file_ptr->cur_scope; 1710 if (pscope == (scope_t *) NULL) 1711 as_fatal (_("too many st_End's")); 1712 else 1713 { 1714 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st; 1715 1716 psym->begin_ptr = pscope->lsym; 1717 1718 if (begin_type != st_File) 1719 scope_delta = -1; 1720 1721 /* Except for file, structure, union, or enumeration end 1722 blocks remove all tags created within this scope. */ 1723 if (begin_type != st_File && storage != sc_Info) 1724 { 1725 ptag_head = cur_tag_head; 1726 cur_tag_head = ptag_head->prev; 1727 1728 for (ptag = ptag_head->first_tag; 1729 ptag != (tag_t *) NULL; 1730 ptag = ptag_next) 1731 { 1732 if (ptag->forward_ref != (forward_t *) NULL) 1733 add_unknown_tag (ptag); 1734 1735 ptag_next = ptag->same_block; 1736 ptag->hash_ptr->tag_ptr = ptag->same_name; 1737 free_tag (ptag); 1738 } 1739 1740 free_thead (ptag_head); 1741 } 1742 1743 cur_file_ptr->cur_scope = pscope->prev; 1744 1745 /* block begin gets next sym #. This is set when we know 1746 the symbol index value. */ 1747 1748 /* Functions push two or more aux words as follows: 1749 1st word: index+1 of the end symbol (filled in later). 1750 2nd word: type of the function (plus any aux words needed). 1751 Also, tie the external pointer back to the function begin symbol. */ 1752 if (begin_type != st_File && begin_type != st_Block) 1753 { 1754 symint_t ty; 1755 varray_t *svp = &cur_file_ptr->aux_syms; 1756 1757 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0); 1758 pscope->lsym->index_ptr = 1759 &svp->last->datum->aux[svp->objects_last_page - 1]; 1760 ty = add_aux_sym_tir (&last_func_type_info, 1761 hash_no, 1762 &cur_file_ptr->thash_head[0]); 1763 (void) ty; 1764 /* This seems to be unnecessary. I'm not even sure what it is 1765 * intended to do. It's from mips-tfile. 1766 * if (last_func_sym_value != (symbolS *) NULL) 1767 * { 1768 * last_func_sym_value->ifd = cur_file_ptr->file_index; 1769 * last_func_sym_value->index = ty; 1770 * } 1771 */ 1772 } 1773 1774 free_scope (pscope); 1775 } 1776 } 1777 1778 cur_file_ptr->nested_scopes += scope_delta; 1779 1780 #ifdef ECOFF_DEBUG 1781 if (debug && type != st_File 1782 && (debug > 2 || type == st_Block || type == st_End 1783 || type == st_Proc || type == st_StaticProc)) 1784 { 1785 char *sc_str = sc_to_string (storage); 1786 char *st_str = st_to_string (type); 1787 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0); 1788 1789 fprintf (stderr, 1790 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s", 1791 value, depth, sc_str); 1792 1793 if (str_start && str_end_p1 - str_start > 0) 1794 fprintf (stderr, " st= %-11s name= %.*s\n", 1795 st_str, str_end_p1 - str_start, str_start); 1796 else 1797 { 1798 unsigned long len = strlen (st_str); 1799 fprintf (stderr, " st= %.*s\n", len - 1, st_str); 1800 } 1801 } 1802 #endif 1803 1804 return psym; 1805 } 1806 1807 /* Add an auxiliary symbol (passing a symint). This is actually used 1809 for integral aux types, not just symints. */ 1810 1811 static symint_t 1812 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */) 1813 { 1814 varray_t *vp; 1815 aux_t *aux_ptr; 1816 1817 if (cur_file_ptr == (efdr_t *) NULL) 1818 as_fatal (_("no current file pointer")); 1819 1820 vp = &cur_file_ptr->aux_syms; 1821 1822 if (vp->objects_last_page == vp->objects_per_page) 1823 add_varray_page (vp); 1824 1825 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1826 aux_ptr->type = aux_isym; 1827 aux_ptr->data.isym = aux_word; 1828 1829 return vp->num_allocated++; 1830 } 1831 1832 /* Add an auxiliary symbol (passing a file/symbol index combo). */ 1833 1834 static symint_t 1835 add_aux_sym_rndx (int file_index, symint_t sym_index) 1836 { 1837 varray_t *vp; 1838 aux_t *aux_ptr; 1839 1840 if (cur_file_ptr == (efdr_t *) NULL) 1841 as_fatal (_("no current file pointer")); 1842 1843 vp = &cur_file_ptr->aux_syms; 1844 1845 if (vp->objects_last_page == vp->objects_per_page) 1846 add_varray_page (vp); 1847 1848 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1849 aux_ptr->type = aux_rndx; 1850 aux_ptr->data.rndx.rfd = file_index; 1851 aux_ptr->data.rndx.index = sym_index; 1852 1853 return vp->num_allocated++; 1854 } 1855 1856 /* Add an auxiliary symbol (passing the basic type and possibly 1858 type qualifiers). */ 1859 1860 static symint_t 1861 add_aux_sym_tir (type_info_t *t, /* current type information */ 1862 hash_state_t state, /* whether to hash type or not */ 1863 thash_t **hash_tbl /* pointer to hash table to use */) 1864 { 1865 varray_t *vp; 1866 aux_t *aux_ptr; 1867 static AUXU init_aux; 1868 symint_t ret; 1869 int i; 1870 AUXU aux; 1871 1872 if (cur_file_ptr == (efdr_t *) NULL) 1873 as_fatal (_("no current file pointer")); 1874 1875 vp = &cur_file_ptr->aux_syms; 1876 1877 aux = init_aux; 1878 aux.ti.bt = (int) t->basic_type; 1879 aux.ti.continued = 0; 1880 aux.ti.fBitfield = t->bitfield; 1881 1882 aux.ti.tq0 = (int) t->type_qualifiers[0]; 1883 aux.ti.tq1 = (int) t->type_qualifiers[1]; 1884 aux.ti.tq2 = (int) t->type_qualifiers[2]; 1885 aux.ti.tq3 = (int) t->type_qualifiers[3]; 1886 aux.ti.tq4 = (int) t->type_qualifiers[4]; 1887 aux.ti.tq5 = (int) t->type_qualifiers[5]; 1888 1889 /* For anything that adds additional information, we must not hash, 1890 so check here, and reset our state. */ 1891 1892 if (state != hash_no 1893 && (t->type_qualifiers[0] == tq_Array 1894 || t->type_qualifiers[1] == tq_Array 1895 || t->type_qualifiers[2] == tq_Array 1896 || t->type_qualifiers[3] == tq_Array 1897 || t->type_qualifiers[4] == tq_Array 1898 || t->type_qualifiers[5] == tq_Array 1899 || t->basic_type == bt_Struct 1900 || t->basic_type == bt_Union 1901 || t->basic_type == bt_Enum 1902 || t->bitfield 1903 || t->num_dims > 0)) 1904 state = hash_no; 1905 1906 /* See if we can hash this type, and save some space, but some types 1907 can't be hashed (because they contain arrays or continuations), 1908 and others can be put into the hash list, but cannot use existing 1909 types because other aux entries precede this one. */ 1910 1911 if (state != hash_no) 1912 { 1913 thash_t *hash_ptr; 1914 symint_t hi; 1915 1916 hi = aux.isym & ((1 << HASHBITS) - 1); 1917 hi %= THASH_SIZE; 1918 1919 for (hash_ptr = hash_tbl[hi]; 1920 hash_ptr != (thash_t *)0; 1921 hash_ptr = hash_ptr->next) 1922 { 1923 if (aux.isym == hash_ptr->type.isym) 1924 break; 1925 } 1926 1927 if (hash_ptr != (thash_t *) NULL && state == hash_yes) 1928 return hash_ptr->indx; 1929 1930 if (hash_ptr == (thash_t *) NULL) 1931 { 1932 hash_ptr = allocate_thash (); 1933 hash_ptr->next = hash_tbl[hi]; 1934 hash_ptr->type = aux; 1935 hash_ptr->indx = vp->num_allocated; 1936 hash_tbl[hi] = hash_ptr; 1937 } 1938 } 1939 1940 /* Everything is set up, add the aux symbol. */ 1941 if (vp->objects_last_page == vp->objects_per_page) 1942 add_varray_page (vp); 1943 1944 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1945 aux_ptr->type = aux_tir; 1946 aux_ptr->data = aux; 1947 1948 ret = vp->num_allocated++; 1949 1950 /* Add bitfield length if it exists. 1951 1952 NOTE: Mips documentation claims bitfield goes at the end of the 1953 AUX record, but the DECstation compiler emits it here. 1954 (This would only make a difference for enum bitfields.) 1955 1956 Also note: We use the last size given since gcc may emit 2 1957 for an enum bitfield. */ 1958 1959 if (t->bitfield) 1960 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]); 1961 1962 /* Add tag information if needed. Structure, union, and enum 1963 references add 2 aux symbols: a [file index, symbol index] 1964 pointer to the structure type, and the current file index. */ 1965 1966 if (t->basic_type == bt_Struct 1967 || t->basic_type == bt_Union 1968 || t->basic_type == bt_Enum) 1969 { 1970 symint_t file_index = t->tag_ptr->ifd; 1971 localsym_t *sym = t->tag_ptr->sym; 1972 forward_t *forward_ref = allocate_forward (); 1973 1974 if (sym != (localsym_t *) NULL) 1975 { 1976 forward_ref->next = sym->forward_ref; 1977 sym->forward_ref = forward_ref; 1978 } 1979 else 1980 { 1981 forward_ref->next = t->tag_ptr->forward_ref; 1982 t->tag_ptr->forward_ref = forward_ref; 1983 } 1984 1985 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil); 1986 forward_ref->index_ptr 1987 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1988 1989 (void) add_aux_sym_symint (file_index); 1990 forward_ref->ifd_ptr 1991 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1992 } 1993 1994 /* Add information about array bounds if they exist. */ 1995 for (i = 0; i < t->num_dims; i++) 1996 { 1997 (void) add_aux_sym_rndx (ST_RFDESCAPE, 1998 cur_file_ptr->int_type); 1999 2000 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/ 2001 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */ 2002 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/ 2003 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */ 2004 ? 0 2005 : (t->sizes[i] * 8) / t->dimensions[i]); 2006 }; 2007 2008 /* NOTE: Mips documentation claims that the bitfield width goes here. 2009 But it needs to be emitted earlier. */ 2010 2011 return ret; 2012 } 2013 2014 /* Add a tag to the tag table (unless it already exists). */ 2016 2017 static tag_t * 2018 get_tag (const char *tag, /* tag name */ 2019 localsym_t *sym, /* tag start block */ 2020 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */) 2021 { 2022 shash_t *hash_ptr; 2023 const char *err; 2024 tag_t *tag_ptr; 2025 2026 if (cur_file_ptr == (efdr_t *) NULL) 2027 as_fatal (_("no current file pointer")); 2028 2029 hash_ptr = (shash_t *) hash_find (tag_hash, tag); 2030 2031 if (hash_ptr != (shash_t *) NULL 2032 && hash_ptr->tag_ptr != (tag_t *) NULL) 2033 { 2034 tag_ptr = hash_ptr->tag_ptr; 2035 if (sym != (localsym_t *) NULL) 2036 { 2037 tag_ptr->basic_type = basic_type; 2038 tag_ptr->ifd = cur_file_ptr->file_index; 2039 tag_ptr->sym = sym; 2040 } 2041 return tag_ptr; 2042 } 2043 2044 if (hash_ptr == (shash_t *) NULL) 2045 { 2046 char *perm; 2047 2048 perm = xstrdup (tag); 2049 hash_ptr = allocate_shash (); 2050 err = hash_insert (tag_hash, perm, (char *) hash_ptr); 2051 if (err) 2052 as_fatal (_("inserting \"%s\" into tag hash table: %s"), 2053 tag, err); 2054 hash_ptr->string = perm; 2055 } 2056 2057 tag_ptr = allocate_tag (); 2058 tag_ptr->forward_ref = (forward_t *) NULL; 2059 tag_ptr->hash_ptr = hash_ptr; 2060 tag_ptr->same_name = hash_ptr->tag_ptr; 2061 tag_ptr->basic_type = basic_type; 2062 tag_ptr->sym = sym; 2063 tag_ptr->ifd = ((sym == (localsym_t *) NULL) 2064 ? (symint_t) -1 2065 : cur_file_ptr->file_index); 2066 tag_ptr->same_block = cur_tag_head->first_tag; 2067 2068 cur_tag_head->first_tag = tag_ptr; 2069 hash_ptr->tag_ptr = tag_ptr; 2070 2071 return tag_ptr; 2072 } 2073 2074 /* Add an unknown {struct, union, enum} tag. */ 2076 2077 static void 2078 add_unknown_tag (tag_t *ptag /* pointer to tag information */) 2079 { 2080 shash_t *hash_ptr = ptag->hash_ptr; 2081 char *name = hash_ptr->string; 2082 localsym_t *sym; 2083 forward_t **pf; 2084 2085 #ifdef ECOFF_DEBUG 2086 if (debug > 1) 2087 { 2088 char *agg_type = "{unknown aggregate type}"; 2089 switch (ptag->basic_type) 2090 { 2091 case bt_Struct: agg_type = "struct"; break; 2092 case bt_Union: agg_type = "union"; break; 2093 case bt_Enum: agg_type = "enum"; break; 2094 default: break; 2095 } 2096 2097 fprintf (stderr, "unknown %s %.*s found\n", agg_type, 2098 hash_ptr->len, name_start); 2099 } 2100 #endif 2101 2102 sym = add_ecoff_symbol (name, 2103 st_Block, 2104 sc_Info, 2105 (symbolS *) NULL, 2106 (bfd_vma) 0, 2107 (symint_t) 0, 2108 (symint_t) 0); 2109 2110 (void) add_ecoff_symbol (name, 2111 st_End, 2112 sc_Info, 2113 (symbolS *) NULL, 2114 (bfd_vma) 0, 2115 (symint_t) 0, 2116 (symint_t) 0); 2117 2118 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) 2119 ; 2120 *pf = ptag->forward_ref; 2121 } 2122 2123 /* Add a procedure to the current file's list of procedures, and record 2125 this is the current procedure. */ 2126 2127 static void 2128 add_procedure (char *func /* func name */) 2129 { 2130 varray_t *vp; 2131 proc_t *new_proc_ptr; 2132 symbolS *sym; 2133 2134 #ifdef ECOFF_DEBUG 2135 if (debug) 2136 fputc ('\n', stderr); 2137 #endif 2138 2139 if (cur_file_ptr == (efdr_t *) NULL) 2140 as_fatal (_("no current file pointer")); 2141 2142 vp = &cur_file_ptr->procs; 2143 2144 if (vp->objects_last_page == vp->objects_per_page) 2145 add_varray_page (vp); 2146 2147 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++]; 2148 2149 if (first_proc_ptr == (proc_t *) NULL) 2150 first_proc_ptr = new_proc_ptr; 2151 2152 vp->num_allocated++; 2153 2154 new_proc_ptr->pdr.isym = -1; 2155 new_proc_ptr->pdr.iline = -1; 2156 new_proc_ptr->pdr.lnLow = -1; 2157 new_proc_ptr->pdr.lnHigh = -1; 2158 2159 /* Set the BSF_FUNCTION flag for the symbol. */ 2160 sym = symbol_find_or_make (func); 2161 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; 2162 2163 /* Push the start of the function. */ 2164 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text, 2165 sym, (bfd_vma) 0, (symint_t) 0, 2166 (symint_t) 0); 2167 2168 ++proc_cnt; 2169 2170 /* Fill in the linenos preceding the .ent, if any. */ 2171 if (noproc_lineno != (lineno_list_t *) NULL) 2172 { 2173 lineno_list_t *l; 2174 2175 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next) 2176 l->proc = new_proc_ptr; 2177 *last_lineno_ptr = noproc_lineno; 2178 while (*last_lineno_ptr != NULL) 2179 { 2180 last_lineno = *last_lineno_ptr; 2181 last_lineno_ptr = &last_lineno->next; 2182 } 2183 noproc_lineno = (lineno_list_t *) NULL; 2184 } 2185 } 2186 2187 symbolS * 2188 ecoff_get_cur_proc_sym (void) 2189 { 2190 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL); 2191 } 2192 2193 /* Add a new filename, and set up all of the file relative 2195 virtual arrays (strings, symbols, aux syms, etc.). Record 2196 where the current file structure lives. */ 2197 2198 static void 2199 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake) 2200 { 2201 int first_ch; 2202 efdr_t *fil_ptr; 2203 2204 #ifdef ECOFF_DEBUG 2205 if (debug) 2206 fprintf (stderr, "\tfile\t%.*s\n", len, file_start); 2207 #endif 2208 2209 /* If the file name is NULL, then no .file symbol appeared, and we 2210 want to use the actual file name. */ 2211 if (file_name == (const char *) NULL) 2212 { 2213 char *file; 2214 2215 if (first_file != (efdr_t *) NULL) 2216 as_fatal (_("fake .file after real one")); 2217 as_where (&file, (unsigned int *) NULL); 2218 file_name = (const char *) file; 2219 2220 /* Automatically generate ECOFF debugging information, since I 2221 think that's what other ECOFF assemblers do. We don't do 2222 this if we see a .file directive with a string, since that 2223 implies that some sort of debugging information is being 2224 provided. */ 2225 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED) 2226 debug_type = DEBUG_ECOFF; 2227 } 2228 else if (debug_type == DEBUG_UNSPECIFIED) 2229 debug_type = DEBUG_NONE; 2230 2231 #ifndef NO_LISTING 2232 if (listing) 2233 listing_source_file (file_name); 2234 #endif 2235 2236 current_stabs_filename = file_name; 2237 2238 /* If we're creating stabs, then we don't actually make a new FDR. 2239 Instead, we just create a stabs symbol. */ 2240 if (stabs_seen) 2241 { 2242 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil, 2243 symbol_new ("L0\001", now_seg, 2244 (valueT) frag_now_fix (), 2245 frag_now), 2246 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL)); 2247 return; 2248 } 2249 2250 first_ch = *file_name; 2251 2252 /* FIXME: We can't safely merge files which have line number 2253 information (fMerge will be zero in this case). Otherwise, we 2254 get incorrect line number debugging info. See for instance 2255 ecoff_build_lineno, which will end up setting all file->fdr.* 2256 fields multiple times, resulting in incorrect debug info. In 2257 order to make this work right, all line number and symbol info 2258 for the same source file has to be adjacent in the object file, 2259 so that a single file descriptor can be used to point to them. 2260 This would require maintaining file specific lists of line 2261 numbers and symbols for each file, so that they can be merged 2262 together (or output together) when two .file pseudo-ops are 2263 merged into one file descriptor. */ 2264 2265 /* See if the file has already been created. */ 2266 for (fil_ptr = first_file; 2267 fil_ptr != (efdr_t *) NULL; 2268 fil_ptr = fil_ptr->next_file) 2269 { 2270 if (first_ch == fil_ptr->name[0] 2271 && filename_cmp (file_name, fil_ptr->name) == 0 2272 && fil_ptr->fdr.fMerge) 2273 { 2274 cur_file_ptr = fil_ptr; 2275 if (! fake) 2276 cur_file_ptr->fake = 0; 2277 break; 2278 } 2279 } 2280 2281 /* If this is a new file, create it. */ 2282 if (fil_ptr == (efdr_t *) NULL) 2283 { 2284 if (file_desc.objects_last_page == file_desc.objects_per_page) 2285 add_varray_page (&file_desc); 2286 2287 fil_ptr = cur_file_ptr = 2288 &file_desc.last->datum->file[file_desc.objects_last_page++]; 2289 *fil_ptr = init_file; 2290 2291 fil_ptr->file_index = current_file_idx++; 2292 ++file_desc.num_allocated; 2293 2294 fil_ptr->fake = fake; 2295 2296 /* Allocate the string hash table. */ 2297 fil_ptr->str_hash = hash_new (); 2298 2299 /* Make sure 0 byte in string table is null */ 2300 add_string (&fil_ptr->strings, 2301 fil_ptr->str_hash, 2302 "", 2303 (shash_t **)0); 2304 2305 if (strlen (file_name) > PAGE_USIZE - 2) 2306 as_fatal (_("filename goes over one page boundary")); 2307 2308 /* Push the start of the filename. We assume that the filename 2309 will be stored at string offset 1. */ 2310 (void) add_ecoff_symbol (file_name, st_File, sc_Text, 2311 (symbolS *) NULL, (bfd_vma) 0, 2312 (symint_t) 0, (symint_t) 0); 2313 fil_ptr->fdr.rss = 1; 2314 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1]; 2315 2316 /* Update the linked list of file descriptors. */ 2317 *last_file_ptr = fil_ptr; 2318 last_file_ptr = &fil_ptr->next_file; 2319 2320 /* Add void & int types to the file (void should be first to catch 2321 errant 0's within the index fields). */ 2322 fil_ptr->void_type = add_aux_sym_tir (&void_type_info, 2323 hash_yes, 2324 &cur_file_ptr->thash_head[0]); 2325 2326 fil_ptr->int_type = add_aux_sym_tir (&int_type_info, 2327 hash_yes, 2328 &cur_file_ptr->thash_head[0]); 2329 } 2330 } 2331 2332 /* This function is called when the assembler notices a preprocessor 2333 directive switching to a new file. This will not happen in 2334 compiler output, only in hand coded assembler. */ 2335 2336 void 2337 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED) 2338 { 2339 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0) 2340 return; 2341 add_file (name, 0, 0); 2342 2343 /* This is a hand coded assembler file, so automatically turn on 2344 debugging information. */ 2345 if (debug_type == DEBUG_UNSPECIFIED) 2346 debug_type = DEBUG_ECOFF; 2347 } 2348 2349 #ifdef ECOFF_DEBUG 2351 2352 /* Convert storage class to string. */ 2353 2354 static char * 2355 sc_to_string (storage_class) 2356 sc_t storage_class; 2357 { 2358 switch (storage_class) 2359 { 2360 case sc_Nil: return "Nil,"; 2361 case sc_Text: return "Text,"; 2362 case sc_Data: return "Data,"; 2363 case sc_Bss: return "Bss,"; 2364 case sc_Register: return "Register,"; 2365 case sc_Abs: return "Abs,"; 2366 case sc_Undefined: return "Undefined,"; 2367 case sc_CdbLocal: return "CdbLocal,"; 2368 case sc_Bits: return "Bits,"; 2369 case sc_CdbSystem: return "CdbSystem,"; 2370 case sc_RegImage: return "RegImage,"; 2371 case sc_Info: return "Info,"; 2372 case sc_UserStruct: return "UserStruct,"; 2373 case sc_SData: return "SData,"; 2374 case sc_SBss: return "SBss,"; 2375 case sc_RData: return "RData,"; 2376 case sc_Var: return "Var,"; 2377 case sc_Common: return "Common,"; 2378 case sc_SCommon: return "SCommon,"; 2379 case sc_VarRegister: return "VarRegister,"; 2380 case sc_Variant: return "Variant,"; 2381 case sc_SUndefined: return "SUndefined,"; 2382 case sc_Init: return "Init,"; 2383 case sc_Max: return "Max,"; 2384 } 2385 2386 return "???,"; 2387 } 2388 2389 #endif /* DEBUG */ 2390 2391 #ifdef ECOFF_DEBUG 2393 2394 /* Convert symbol type to string. */ 2395 2396 static char * 2397 st_to_string (symbol_type) 2398 st_t symbol_type; 2399 { 2400 switch (symbol_type) 2401 { 2402 case st_Nil: return "Nil,"; 2403 case st_Global: return "Global,"; 2404 case st_Static: return "Static,"; 2405 case st_Param: return "Param,"; 2406 case st_Local: return "Local,"; 2407 case st_Label: return "Label,"; 2408 case st_Proc: return "Proc,"; 2409 case st_Block: return "Block,"; 2410 case st_End: return "End,"; 2411 case st_Member: return "Member,"; 2412 case st_Typedef: return "Typedef,"; 2413 case st_File: return "File,"; 2414 case st_RegReloc: return "RegReloc,"; 2415 case st_Forward: return "Forward,"; 2416 case st_StaticProc: return "StaticProc,"; 2417 case st_Constant: return "Constant,"; 2418 case st_Str: return "String,"; 2419 case st_Number: return "Number,"; 2420 case st_Expr: return "Expr,"; 2421 case st_Type: return "Type,"; 2422 case st_Max: return "Max,"; 2423 } 2424 2425 return "???,"; 2426 } 2427 2428 #endif /* DEBUG */ 2429 2430 /* Parse .begin directives which have a label as the first argument 2432 which gives the location of the start of the block. */ 2433 2434 void 2435 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED) 2436 { 2437 char *name; 2438 char name_end; 2439 2440 if (cur_file_ptr == (efdr_t *) NULL) 2441 { 2442 as_warn (_(".begin directive without a preceding .file directive")); 2443 demand_empty_rest_of_line (); 2444 return; 2445 } 2446 2447 if (cur_proc_ptr == (proc_t *) NULL) 2448 { 2449 as_warn (_(".begin directive without a preceding .ent directive")); 2450 demand_empty_rest_of_line (); 2451 return; 2452 } 2453 2454 name_end = get_symbol_name (&name); 2455 2456 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text, 2457 symbol_find_or_make (name), 2458 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2459 2460 (void) restore_line_pointer (name_end); 2461 2462 /* The line number follows, but we don't use it. */ 2463 (void) get_absolute_expression (); 2464 demand_empty_rest_of_line (); 2465 } 2466 2467 /* Parse .bend directives which have a label as the first argument 2469 which gives the location of the end of the block. */ 2470 2471 void 2472 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED) 2473 { 2474 char *name; 2475 char name_end; 2476 symbolS *endsym; 2477 2478 if (cur_file_ptr == (efdr_t *) NULL) 2479 { 2480 as_warn (_(".bend directive without a preceding .file directive")); 2481 demand_empty_rest_of_line (); 2482 return; 2483 } 2484 2485 if (cur_proc_ptr == (proc_t *) NULL) 2486 { 2487 as_warn (_(".bend directive without a preceding .ent directive")); 2488 demand_empty_rest_of_line (); 2489 return; 2490 } 2491 2492 name_end = get_symbol_name (&name); 2493 2494 /* The value is the distance between the .bend directive and the 2495 corresponding symbol. We fill in the offset when we write out 2496 the symbol. */ 2497 endsym = symbol_find (name); 2498 if (endsym == (symbolS *) NULL) 2499 as_warn (_(".bend directive names unknown symbol")); 2500 else 2501 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym, 2502 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2503 2504 restore_line_pointer (name_end); 2505 2506 /* The line number follows, but we don't use it. */ 2507 (void) get_absolute_expression (); 2508 demand_empty_rest_of_line (); 2509 } 2510 2511 /* COFF debugging information is provided as a series of directives 2513 (.def, .scl, etc.). We build up information as we read the 2514 directives in the following static variables, and file it away when 2515 we reach the .endef directive. */ 2516 static char *coff_sym_name; 2517 static type_info_t coff_type; 2518 static sc_t coff_storage_class; 2519 static st_t coff_symbol_typ; 2520 static int coff_is_function; 2521 static char *coff_tag; 2522 static valueT coff_value; 2523 static symbolS *coff_sym_value; 2524 static bfd_vma coff_sym_addend; 2525 static int coff_inside_enumeration; 2526 2527 /* Handle a .def directive: start defining a symbol. */ 2528 2529 void 2530 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED) 2531 { 2532 char *name; 2533 char name_end; 2534 2535 ecoff_debugging_seen = 1; 2536 2537 SKIP_WHITESPACE (); 2538 2539 name_end = get_symbol_name (&name); 2540 2541 if (coff_sym_name != (char *) NULL) 2542 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored")); 2543 else if (*name == '\0') 2544 as_warn (_("empty symbol name in .def; ignored")); 2545 else 2546 { 2547 if (coff_sym_name != (char *) NULL) 2548 free (coff_sym_name); 2549 if (coff_tag != (char *) NULL) 2550 free (coff_tag); 2551 2552 coff_sym_name = xstrdup (name); 2553 coff_type = type_info_init; 2554 coff_storage_class = sc_Nil; 2555 coff_symbol_typ = st_Nil; 2556 coff_is_function = 0; 2557 coff_tag = (char *) NULL; 2558 coff_value = 0; 2559 coff_sym_value = (symbolS *) NULL; 2560 coff_sym_addend = 0; 2561 } 2562 2563 restore_line_pointer (name_end); 2564 2565 demand_empty_rest_of_line (); 2566 } 2567 2568 /* Handle a .dim directive, used to give dimensions for an array. The 2569 arguments are comma separated numbers. mips-tfile assumes that 2570 there will not be more than 6 dimensions, and gdb won't read any 2571 more than that anyhow, so I will also make that assumption. */ 2572 2573 void 2574 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED) 2575 { 2576 int dimens[N_TQ]; 2577 int i; 2578 2579 if (coff_sym_name == (char *) NULL) 2580 { 2581 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored")); 2582 demand_empty_rest_of_line (); 2583 return; 2584 } 2585 2586 for (i = 0; i < N_TQ; i++) 2587 { 2588 SKIP_WHITESPACE (); 2589 dimens[i] = get_absolute_expression (); 2590 if (*input_line_pointer == ',') 2591 ++input_line_pointer; 2592 else 2593 { 2594 if (*input_line_pointer != '\n' 2595 && *input_line_pointer != ';') 2596 as_warn (_("badly formed .dim directive")); 2597 break; 2598 } 2599 } 2600 2601 if (i == N_TQ) 2602 --i; 2603 2604 /* The dimensions are stored away in reverse order. */ 2605 for (; i >= 0; i--) 2606 { 2607 if (coff_type.num_dims >= N_TQ) 2608 { 2609 as_warn (_("too many .dim entries")); 2610 break; 2611 } 2612 coff_type.dimensions[coff_type.num_dims] = dimens[i]; 2613 ++coff_type.num_dims; 2614 } 2615 2616 demand_empty_rest_of_line (); 2617 } 2618 2619 /* Handle a .scl directive, which sets the COFF storage class of the 2620 symbol. */ 2621 2622 void 2623 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED) 2624 { 2625 long val; 2626 2627 if (coff_sym_name == (char *) NULL) 2628 { 2629 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored")); 2630 demand_empty_rest_of_line (); 2631 return; 2632 } 2633 2634 val = get_absolute_expression (); 2635 2636 coff_symbol_typ = map_coff_sym_type[val]; 2637 coff_storage_class = map_coff_storage[val]; 2638 2639 demand_empty_rest_of_line (); 2640 } 2641 2642 /* Handle a .size directive. For some reason mips-tfile.c thinks that 2643 .size can have multiple arguments. We humor it, although gcc will 2644 never generate more than one argument. */ 2645 2646 void 2647 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED) 2648 { 2649 int sizes[N_TQ]; 2650 int i; 2651 2652 if (coff_sym_name == (char *) NULL) 2653 { 2654 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored")); 2655 demand_empty_rest_of_line (); 2656 return; 2657 } 2658 2659 for (i = 0; i < N_TQ; i++) 2660 { 2661 SKIP_WHITESPACE (); 2662 sizes[i] = get_absolute_expression (); 2663 if (*input_line_pointer == ',') 2664 ++input_line_pointer; 2665 else 2666 { 2667 if (*input_line_pointer != '\n' 2668 && *input_line_pointer != ';') 2669 as_warn (_("badly formed .size directive")); 2670 break; 2671 } 2672 } 2673 2674 if (i == N_TQ) 2675 --i; 2676 2677 /* The sizes are stored away in reverse order. */ 2678 for (; i >= 0; i--) 2679 { 2680 if (coff_type.num_sizes >= N_TQ) 2681 { 2682 as_warn (_("too many .size entries")); 2683 break; 2684 } 2685 coff_type.sizes[coff_type.num_sizes] = sizes[i]; 2686 ++coff_type.num_sizes; 2687 } 2688 2689 demand_empty_rest_of_line (); 2690 } 2691 2692 /* Handle the .type directive, which gives the COFF type of the 2693 symbol. */ 2694 2695 void 2696 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED) 2697 { 2698 long val; 2699 tq_t *tq_ptr; 2700 tq_t *tq_shft; 2701 2702 if (coff_sym_name == (char *) NULL) 2703 { 2704 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored")); 2705 demand_empty_rest_of_line (); 2706 return; 2707 } 2708 2709 val = get_absolute_expression (); 2710 2711 coff_type.orig_type = BTYPE (val); 2712 coff_type.basic_type = map_coff_types[coff_type.orig_type]; 2713 2714 tq_ptr = &coff_type.type_qualifiers[N_TQ]; 2715 while (val & ~N_BTMASK) 2716 { 2717 if (tq_ptr == &coff_type.type_qualifiers[0]) 2718 { 2719 /* FIXME: We could handle this by setting the continued bit. 2720 There would still be a limit: the .type argument can not 2721 be infinite. */ 2722 as_warn (_("the type of %s is too complex; it will be simplified"), 2723 coff_sym_name); 2724 break; 2725 } 2726 if (ISPTR (val)) 2727 *--tq_ptr = tq_Ptr; 2728 else if (ISFCN (val)) 2729 *--tq_ptr = tq_Proc; 2730 else if (ISARY (val)) 2731 *--tq_ptr = tq_Array; 2732 else 2733 as_fatal (_("Unrecognized .type argument")); 2734 2735 val = DECREF (val); 2736 } 2737 2738 tq_shft = &coff_type.type_qualifiers[0]; 2739 while (tq_ptr != &coff_type.type_qualifiers[N_TQ]) 2740 *tq_shft++ = *tq_ptr++; 2741 2742 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc) 2743 { 2744 /* If this is a function, ignore it, so that we don't get two 2745 entries (one from the .ent, and one for the .def that 2746 precedes it). Save the type information so that the end 2747 block can properly add it after the begin block index. For 2748 MIPS knows what reason, we must strip off the function type 2749 at this point. */ 2750 coff_is_function = 1; 2751 tq_shft[-1] = tq_Nil; 2752 } 2753 2754 while (tq_shft != &coff_type.type_qualifiers[N_TQ]) 2755 *tq_shft++ = tq_Nil; 2756 2757 demand_empty_rest_of_line (); 2758 } 2759 2760 /* Handle the .tag directive, which gives the name of a structure, 2761 union or enum. */ 2762 2763 void 2764 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED) 2765 { 2766 char *name; 2767 char name_end; 2768 2769 if (coff_sym_name == (char *) NULL) 2770 { 2771 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored")); 2772 demand_empty_rest_of_line (); 2773 return; 2774 } 2775 2776 name_end = get_symbol_name (&name); 2777 2778 coff_tag = xstrdup (name); 2779 2780 (void) restore_line_pointer (name_end); 2781 2782 demand_empty_rest_of_line (); 2783 } 2784 2785 /* Handle the .val directive, which gives the value of the symbol. It 2786 may be the name of a static or global symbol. */ 2787 2788 void 2789 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED) 2790 { 2791 expressionS exp; 2792 2793 if (coff_sym_name == (char *) NULL) 2794 { 2795 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored")); 2796 demand_empty_rest_of_line (); 2797 return; 2798 } 2799 2800 expression (&exp); 2801 if (exp.X_op != O_constant && exp.X_op != O_symbol) 2802 { 2803 as_bad (_(".val expression is too complex")); 2804 demand_empty_rest_of_line (); 2805 return; 2806 } 2807 2808 if (exp.X_op == O_constant) 2809 coff_value = exp.X_add_number; 2810 else 2811 { 2812 coff_sym_value = exp.X_add_symbol; 2813 coff_sym_addend = exp.X_add_number; 2814 } 2815 2816 demand_empty_rest_of_line (); 2817 } 2818 2819 /* Handle the .endef directive, which terminates processing of COFF 2820 debugging information for a symbol. */ 2821 2822 void 2823 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED) 2824 { 2825 char *name; 2826 symint_t indx; 2827 localsym_t *sym; 2828 2829 demand_empty_rest_of_line (); 2830 2831 if (coff_sym_name == (char *) NULL) 2832 { 2833 as_warn (_(".endef pseudo-op used before .def; ignored")); 2834 return; 2835 } 2836 2837 name = coff_sym_name; 2838 coff_sym_name = (char *) NULL; 2839 2840 /* If the symbol is a static or external, we have already gotten the 2841 appropriate type and class, so make sure we don't override those 2842 values. This is needed because there are some type and classes 2843 that are not in COFF, such as short data, etc. */ 2844 if (coff_sym_value != (symbolS *) NULL) 2845 { 2846 coff_symbol_typ = st_Nil; 2847 coff_storage_class = sc_Nil; 2848 } 2849 2850 coff_type.extra_sizes = coff_tag != (char *) NULL; 2851 if (coff_type.num_dims > 0) 2852 { 2853 int diff = coff_type.num_dims - coff_type.num_sizes; 2854 int i = coff_type.num_dims - 1; 2855 int j; 2856 2857 if (coff_type.num_sizes != 1 || diff < 0) 2858 { 2859 as_warn (_("bad COFF debugging information")); 2860 return; 2861 } 2862 2863 /* If this is an array, make sure the same number of dimensions 2864 and sizes were passed, creating extra sizes for multiply 2865 dimensioned arrays if not passed. */ 2866 coff_type.extra_sizes = 0; 2867 if (diff) 2868 { 2869 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1; 2870 while (j >= 0) 2871 { 2872 coff_type.sizes[j] = (((j - diff) >= 0) 2873 ? coff_type.sizes[j - diff] 2874 : 0); 2875 j--; 2876 } 2877 2878 coff_type.num_sizes = i + 1; 2879 for (i--; i >= 0; i--) 2880 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0 2881 ? 0 2882 : (coff_type.sizes[i + 1] 2883 / coff_type.dimensions[i + 1])); 2884 } 2885 } 2886 else if (coff_symbol_typ == st_Member 2887 && coff_type.num_sizes - coff_type.extra_sizes == 1) 2888 { 2889 /* Is this a bitfield? This is indicated by a structure member 2890 having a size field that isn't an array. */ 2891 coff_type.bitfield = 1; 2892 } 2893 2894 /* Except for enumeration members & begin/ending of scopes, put the 2895 type word in the aux. symbol table. */ 2896 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End) 2897 indx = 0; 2898 else if (coff_inside_enumeration) 2899 indx = cur_file_ptr->void_type; 2900 else 2901 { 2902 if (coff_type.basic_type == bt_Struct 2903 || coff_type.basic_type == bt_Union 2904 || coff_type.basic_type == bt_Enum) 2905 { 2906 if (coff_tag == (char *) NULL) 2907 { 2908 as_warn (_("no tag specified for %s"), name); 2909 return; 2910 } 2911 2912 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL, 2913 coff_type.basic_type); 2914 } 2915 2916 if (coff_is_function) 2917 { 2918 last_func_type_info = coff_type; 2919 last_func_sym_value = coff_sym_value; 2920 return; 2921 } 2922 2923 indx = add_aux_sym_tir (&coff_type, 2924 hash_yes, 2925 &cur_file_ptr->thash_head[0]); 2926 } 2927 2928 /* Do any last minute adjustments that are necessary. */ 2929 switch (coff_symbol_typ) 2930 { 2931 default: 2932 break; 2933 2934 /* For the beginning of structs, unions, and enumerations, the 2935 size info needs to be passed in the value field. */ 2936 case st_Block: 2937 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes 2938 != 1) 2939 { 2940 as_warn (_("bad COFF debugging information")); 2941 return; 2942 } 2943 else 2944 coff_value = coff_type.sizes[0]; 2945 2946 coff_inside_enumeration = (coff_type.orig_type == T_ENUM); 2947 break; 2948 2949 /* For the end of structs, unions, and enumerations, omit the 2950 name which is always ".eos". This needs to be done last, so 2951 that any error reporting above gives the correct name. */ 2952 case st_End: 2953 free (name); 2954 name = (char *) NULL; 2955 coff_value = 0; 2956 coff_inside_enumeration = 0; 2957 break; 2958 2959 /* Members of structures and unions that aren't bitfields, need 2960 to adjust the value from a byte offset to a bit offset. 2961 Members of enumerations do not have the value adjusted, and 2962 can be distinguished by indx == indexNil. For enumerations, 2963 update the maximum enumeration value. */ 2964 case st_Member: 2965 if (! coff_type.bitfield && ! coff_inside_enumeration) 2966 coff_value *= 8; 2967 2968 break; 2969 } 2970 2971 /* Add the symbol. */ 2972 sym = add_ecoff_symbol (name, 2973 coff_symbol_typ, 2974 coff_storage_class, 2975 coff_sym_value, 2976 coff_sym_addend, 2977 (symint_t) coff_value, 2978 indx); 2979 2980 /* deal with struct, union, and enum tags. */ 2981 if (coff_symbol_typ == st_Block) 2982 { 2983 /* Create or update the tag information. */ 2984 tag_t *tag_ptr = get_tag (name, 2985 sym, 2986 coff_type.basic_type); 2987 forward_t **pf; 2988 2989 /* Remember any forward references. */ 2990 for (pf = &sym->forward_ref; 2991 *pf != (forward_t *) NULL; 2992 pf = &(*pf)->next) 2993 ; 2994 *pf = tag_ptr->forward_ref; 2995 tag_ptr->forward_ref = (forward_t *) NULL; 2996 } 2997 } 2998 2999 /* Parse .end directives. */ 3001 3002 void 3003 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED) 3004 { 3005 char *name; 3006 char name_end; 3007 symbolS *ent; 3008 3009 if (cur_file_ptr == (efdr_t *) NULL) 3010 { 3011 as_warn (_(".end directive without a preceding .file directive")); 3012 demand_empty_rest_of_line (); 3013 return; 3014 } 3015 3016 if (cur_proc_ptr == (proc_t *) NULL) 3017 { 3018 as_warn (_(".end directive without a preceding .ent directive")); 3019 demand_empty_rest_of_line (); 3020 return; 3021 } 3022 3023 name_end = get_symbol_name (&name); 3024 3025 if (name == input_line_pointer) 3026 { 3027 as_warn (_(".end directive has no name")); 3028 (void) restore_line_pointer (name_end); 3029 demand_empty_rest_of_line (); 3030 return; 3031 } 3032 3033 /* The value is the distance between the .end directive and the 3034 corresponding symbol. We create a fake symbol to hold the 3035 current location, and put in the offset when we write out the 3036 symbol. */ 3037 ent = symbol_find (name); 3038 if (ent == (symbolS *) NULL) 3039 as_warn (_(".end directive names unknown symbol")); 3040 else 3041 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, 3042 symbol_new ("L0\001", now_seg, 3043 (valueT) frag_now_fix (), 3044 frag_now), 3045 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 3046 3047 cur_proc_ptr = (proc_t *) NULL; 3048 3049 (void) restore_line_pointer (name_end); 3050 demand_empty_rest_of_line (); 3051 } 3052 3053 /* Parse .ent directives. */ 3055 3056 void 3057 ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED) 3058 { 3059 char *name; 3060 char name_end; 3061 3062 if (cur_file_ptr == (efdr_t *) NULL) 3063 add_file ((const char *) NULL, 0, 1); 3064 3065 if (cur_proc_ptr != (proc_t *) NULL) 3066 { 3067 as_warn (_("second .ent directive found before .end directive")); 3068 demand_empty_rest_of_line (); 3069 return; 3070 } 3071 3072 name_end = get_symbol_name (&name); 3073 3074 if (name == input_line_pointer) 3075 { 3076 as_warn (_(".ent directive has no name")); 3077 (void) restore_line_pointer (name_end); 3078 demand_empty_rest_of_line (); 3079 return; 3080 } 3081 3082 add_procedure (name); 3083 3084 (void) restore_line_pointer (name_end); 3085 3086 /* The .ent directive is sometimes followed by a number. I'm not 3087 really sure what the number means. I don't see any way to store 3088 the information in the PDR. The Irix 4 assembler seems to ignore 3089 the information. */ 3090 SKIP_WHITESPACE (); 3091 if (*input_line_pointer == ',') 3092 { 3093 ++input_line_pointer; 3094 SKIP_WHITESPACE (); 3095 } 3096 if (ISDIGIT (*input_line_pointer) 3097 || *input_line_pointer == '-') 3098 (void) get_absolute_expression (); 3099 3100 demand_empty_rest_of_line (); 3101 } 3102 3103 /* Parse .extern directives. */ 3105 3106 void 3107 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED) 3108 { 3109 char *name; 3110 int c; 3111 symbolS *symbolp; 3112 valueT size; 3113 3114 c = get_symbol_name (&name); 3115 symbolp = symbol_find_or_make (name); 3116 (void) restore_line_pointer (c); 3117 3118 S_SET_EXTERNAL (symbolp); 3119 3120 if (*input_line_pointer == ',') 3121 ++input_line_pointer; 3122 size = get_absolute_expression (); 3123 3124 symbol_get_obj (symbolp)->ecoff_extern_size = size; 3125 } 3126 3127 /* Parse .file directives. */ 3129 3130 void 3131 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED) 3132 { 3133 int indx; 3134 char *name; 3135 int len; 3136 3137 if (cur_proc_ptr != (proc_t *) NULL) 3138 { 3139 as_warn (_("no way to handle .file within .ent/.end section")); 3140 demand_empty_rest_of_line (); 3141 return; 3142 } 3143 3144 indx = (int) get_absolute_expression (); 3145 3146 /* FIXME: we don't have to save the name here. */ 3147 name = demand_copy_C_string (&len); 3148 3149 add_file (name, indx - 1, 0); 3150 3151 demand_empty_rest_of_line (); 3152 } 3153 3154 /* Parse .fmask directives. */ 3156 3157 void 3158 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED) 3159 { 3160 long val; 3161 3162 if (cur_proc_ptr == (proc_t *) NULL) 3163 { 3164 as_warn (_(".fmask outside of .ent")); 3165 demand_empty_rest_of_line (); 3166 return; 3167 } 3168 3169 if (get_absolute_expression_and_terminator (&val) != ',') 3170 { 3171 as_warn (_("bad .fmask directive")); 3172 --input_line_pointer; 3173 demand_empty_rest_of_line (); 3174 return; 3175 } 3176 3177 cur_proc_ptr->pdr.fregmask = val; 3178 cur_proc_ptr->pdr.fregoffset = get_absolute_expression (); 3179 3180 demand_empty_rest_of_line (); 3181 } 3182 3183 /* Parse .frame directives. */ 3185 3186 void 3187 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED) 3188 { 3189 long val; 3190 3191 if (cur_proc_ptr == (proc_t *) NULL) 3192 { 3193 as_warn (_(".frame outside of .ent")); 3194 demand_empty_rest_of_line (); 3195 return; 3196 } 3197 3198 cur_proc_ptr->pdr.framereg = tc_get_register (1); 3199 3200 SKIP_WHITESPACE (); 3201 if (*input_line_pointer++ != ',' 3202 || get_absolute_expression_and_terminator (&val) != ',') 3203 { 3204 as_warn (_("bad .frame directive")); 3205 --input_line_pointer; 3206 demand_empty_rest_of_line (); 3207 return; 3208 } 3209 3210 cur_proc_ptr->pdr.frameoffset = val; 3211 3212 cur_proc_ptr->pdr.pcreg = tc_get_register (0); 3213 3214 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to 3215 Sandro. I don't yet know where this value should be stored, if 3216 anywhere. Don't call demand_empty_rest_of_line (). */ 3217 s_ignore (42); 3218 } 3219 3220 /* Parse .mask directives. */ 3222 3223 void 3224 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED) 3225 { 3226 long val; 3227 3228 if (cur_proc_ptr == (proc_t *) NULL) 3229 { 3230 as_warn (_(".mask outside of .ent")); 3231 demand_empty_rest_of_line (); 3232 return; 3233 } 3234 3235 if (get_absolute_expression_and_terminator (&val) != ',') 3236 { 3237 as_warn (_("bad .mask directive")); 3238 --input_line_pointer; 3239 demand_empty_rest_of_line (); 3240 return; 3241 } 3242 3243 cur_proc_ptr->pdr.regmask = val; 3244 cur_proc_ptr->pdr.regoffset = get_absolute_expression (); 3245 3246 demand_empty_rest_of_line (); 3247 } 3248 3249 /* Parse .loc directives. */ 3251 3252 void 3253 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED) 3254 { 3255 lineno_list_t *list; 3256 symint_t lineno; 3257 3258 if (cur_file_ptr == (efdr_t *) NULL) 3259 { 3260 as_warn (_(".loc before .file")); 3261 demand_empty_rest_of_line (); 3262 return; 3263 } 3264 3265 if (now_seg != text_section) 3266 { 3267 as_warn (_(".loc outside of .text")); 3268 demand_empty_rest_of_line (); 3269 return; 3270 } 3271 3272 /* Skip the file number. */ 3273 SKIP_WHITESPACE (); 3274 get_absolute_expression (); 3275 SKIP_WHITESPACE (); 3276 3277 lineno = get_absolute_expression (); 3278 3279 #ifndef NO_LISTING 3280 if (listing) 3281 listing_source_line (lineno); 3282 #endif 3283 3284 /* If we're building stabs, then output a special label rather than 3285 ECOFF line number info. */ 3286 if (stabs_seen) 3287 { 3288 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text, 3289 symbol_new ("L0\001", now_seg, 3290 (valueT) frag_now_fix (), 3291 frag_now), 3292 (bfd_vma) 0, 0, lineno); 3293 return; 3294 } 3295 3296 list = allocate_lineno_list (); 3297 3298 list->next = (lineno_list_t *) NULL; 3299 list->file = cur_file_ptr; 3300 list->proc = cur_proc_ptr; 3301 list->frag = frag_now; 3302 list->paddr = frag_now_fix (); 3303 list->lineno = lineno; 3304 3305 /* We don't want to merge files which have line numbers. */ 3306 cur_file_ptr->fdr.fMerge = 0; 3307 3308 /* A .loc directive will sometimes appear before a .ent directive, 3309 which means that cur_proc_ptr will be NULL here. Arrange to 3310 patch this up. */ 3311 if (cur_proc_ptr == (proc_t *) NULL) 3312 { 3313 lineno_list_t **pl; 3314 3315 pl = &noproc_lineno; 3316 while (*pl != (lineno_list_t *) NULL) 3317 pl = &(*pl)->next; 3318 *pl = list; 3319 } 3320 else 3321 { 3322 last_lineno = list; 3323 *last_lineno_ptr = list; 3324 last_lineno_ptr = &list->next; 3325 } 3326 } 3327 3328 /* The MIPS assembler sometimes inserts nop instructions in the 3329 instruction stream. When this happens, we must patch up the .loc 3330 information so that it points to the instruction after the nop. */ 3331 3332 void 3333 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset) 3334 { 3335 if (last_lineno != NULL 3336 && last_lineno->frag == old_frag 3337 && last_lineno->paddr == old_frag_offset) 3338 { 3339 last_lineno->frag = frag_now; 3340 last_lineno->paddr = frag_now_fix (); 3341 } 3342 } 3343 3344 /* Make sure the @stabs symbol is emitted. */ 3346 3347 static void 3348 mark_stabs (int ignore ATTRIBUTE_UNUSED) 3349 { 3350 if (! stabs_seen) 3351 { 3352 /* Add a dummy @stabs dymbol. */ 3353 stabs_seen = 1; 3354 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info, 3355 (symbolS *) NULL, 3356 (bfd_vma) 0, (symint_t) -1, 3357 ECOFF_MARK_STAB (0)); 3358 } 3359 } 3360 3361 /* Parse .weakext directives. */ 3363 #ifndef TC_MIPS 3364 /* For TC_MIPS use the version in tc-mips.c. */ 3365 void 3366 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED) 3367 { 3368 char *name; 3369 int c; 3370 symbolS *symbolP; 3371 expressionS exp; 3372 3373 c = get_symbol_name (&name); 3374 symbolP = symbol_find_or_make (name); 3375 (void) restore_line_pointer (c); 3376 3377 SKIP_WHITESPACE (); 3378 3379 if (*input_line_pointer == ',') 3380 { 3381 if (S_IS_DEFINED (symbolP)) 3382 { 3383 as_bad (_("symbol `%s' is already defined"), 3384 S_GET_NAME (symbolP)); 3385 ignore_rest_of_line (); 3386 return; 3387 } 3388 3389 ++input_line_pointer; 3390 SKIP_WHITESPACE (); 3391 if (! is_end_of_line[(unsigned char) *input_line_pointer]) 3392 { 3393 expression (&exp); 3394 if (exp.X_op != O_symbol) 3395 { 3396 as_bad (_("bad .weakext directive")); 3397 ignore_rest_of_line (); 3398 return; 3399 } 3400 symbol_set_value_expression (symbolP, &exp); 3401 } 3402 } 3403 3404 S_SET_WEAK (symbolP); 3405 3406 demand_empty_rest_of_line (); 3407 } 3408 #endif /* not TC_MIPS */ 3409 3410 /* Handle .stabs directives. The actual parsing routine is done by a 3412 generic routine. This routine is called via OBJ_PROCESS_STAB. 3413 When this is called, input_line_pointer will be pointing at the 3414 value field of the stab. 3415 3416 .stabs directives have five fields: 3417 "string" a string, encoding the type information. 3418 code a numeric code, defined in <stab.h> 3419 0 a zero 3420 desc a zero or line number 3421 value a numeric value or an address. 3422 3423 If the value is relocatable, we transform this into: 3424 iss points as an index into string space 3425 value value from lookup of the name 3426 st st from lookup of the name 3427 sc sc from lookup of the name 3428 index code|CODE_MASK 3429 3430 If the value is not relocatable, we transform this into: 3431 iss points as an index into string space 3432 value value 3433 st st_Nil 3434 sc sc_Nil 3435 index code|CODE_MASK 3436 3437 .stabn directives have four fields (string is null): 3438 code a numeric code, defined in <stab.h> 3439 0 a zero 3440 desc a zero or a line number 3441 value a numeric value or an address. */ 3442 3443 void 3444 ecoff_stab (segT sec ATTRIBUTE_UNUSED, 3445 int what, 3446 const char *string, 3447 int type, 3448 int other, 3449 int desc) 3450 { 3451 efdr_t *save_file_ptr = cur_file_ptr; 3452 symbolS *sym; 3453 symint_t value; 3454 bfd_vma addend; 3455 st_t st; 3456 sc_t sc; 3457 symint_t indx; 3458 localsym_t *hold = NULL; 3459 3460 ecoff_debugging_seen = 1; 3461 3462 /* We don't handle .stabd. */ 3463 if (what != 's' && what != 'n') 3464 { 3465 as_bad (_(".stab%c is not supported"), what); 3466 return; 3467 } 3468 3469 /* A .stabn uses a null name, not an empty string. */ 3470 if (what == 'n') 3471 string = NULL; 3472 3473 /* We ignore the other field. */ 3474 if (other != 0) 3475 as_warn (_(".stab%c: ignoring non-zero other field"), what); 3476 3477 /* Make sure we have a current file. */ 3478 if (cur_file_ptr == (efdr_t *) NULL) 3479 { 3480 add_file ((const char *) NULL, 0, 1); 3481 save_file_ptr = cur_file_ptr; 3482 } 3483 3484 /* For stabs in ECOFF, the first symbol must be @stabs. This is a 3485 signal to gdb. */ 3486 if (stabs_seen == 0) 3487 mark_stabs (0); 3488 3489 /* Line number stabs are handled differently, since they have two 3490 values, the line number and the address of the label. We use the 3491 index field (aka desc) to hold the line number, and the value 3492 field to hold the address. The symbol type is st_Label, which 3493 should be different from the other stabs, so that gdb can 3494 recognize it. */ 3495 if (type == N_SLINE) 3496 { 3497 SYMR dummy_symr; 3498 char *name; 3499 char name_end; 3500 3501 #ifndef NO_LISTING 3502 if (listing) 3503 listing_source_line ((unsigned int) desc); 3504 #endif 3505 3506 dummy_symr.index = desc; 3507 if (dummy_symr.index != desc) 3508 { 3509 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"), 3510 desc, what); 3511 return; 3512 } 3513 3514 name_end = get_symbol_name (&name); 3515 sym = symbol_find_or_make (name); 3516 (void) restore_line_pointer (name_end); 3517 3518 value = 0; 3519 addend = 0; 3520 st = st_Label; 3521 sc = sc_Text; 3522 indx = desc; 3523 } 3524 else 3525 { 3526 #ifndef NO_LISTING 3527 if (listing && (type == N_SO || type == N_SOL)) 3528 listing_source_file (string); 3529 #endif 3530 3531 if (ISDIGIT (*input_line_pointer) 3532 || *input_line_pointer == '-' 3533 || *input_line_pointer == '+') 3534 { 3535 st = st_Nil; 3536 sc = sc_Nil; 3537 sym = (symbolS *) NULL; 3538 value = get_absolute_expression (); 3539 addend = 0; 3540 } 3541 else if (! is_name_beginner ((unsigned char) *input_line_pointer)) 3542 { 3543 as_warn (_("illegal .stab%c directive, bad character"), what); 3544 return; 3545 } 3546 else 3547 { 3548 expressionS exp; 3549 3550 sc = sc_Nil; 3551 st = st_Nil; 3552 3553 expression (&exp); 3554 if (exp.X_op == O_constant) 3555 { 3556 sym = NULL; 3557 value = exp.X_add_number; 3558 addend = 0; 3559 } 3560 else if (exp.X_op == O_symbol) 3561 { 3562 sym = exp.X_add_symbol; 3563 value = 0; 3564 addend = exp.X_add_number; 3565 } 3566 else 3567 { 3568 sym = make_expr_symbol (&exp); 3569 value = 0; 3570 addend = 0; 3571 } 3572 } 3573 3574 indx = ECOFF_MARK_STAB (type); 3575 } 3576 3577 /* Don't store the stabs symbol we are creating as the type of the 3578 ECOFF symbol. We want to compute the type of the ECOFF symbol 3579 independently. */ 3580 if (sym != (symbolS *) NULL) 3581 hold = symbol_get_obj (sym)->ecoff_symbol; 3582 3583 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx); 3584 3585 if (sym != (symbolS *) NULL) 3586 symbol_get_obj (sym)->ecoff_symbol = hold; 3587 3588 /* Restore normal file type. */ 3589 cur_file_ptr = save_file_ptr; 3590 } 3591 3592 /* Frob an ECOFF symbol. Small common symbols go into a special 3594 .scommon section rather than bfd_com_section. */ 3595 3596 void 3597 ecoff_frob_symbol (symbolS *sym) 3598 { 3599 if (S_IS_COMMON (sym) 3600 && S_GET_VALUE (sym) > 0 3601 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput)) 3602 { 3603 static asection scom_section; 3604 static asymbol scom_symbol; 3605 3606 /* We must construct a fake section similar to bfd_com_section 3607 but with the name .scommon. */ 3608 if (scom_section.name == NULL) 3609 { 3610 scom_section = *bfd_com_section_ptr; 3611 scom_section.name = ".scommon"; 3612 scom_section.output_section = &scom_section; 3613 scom_section.symbol = &scom_symbol; 3614 scom_section.symbol_ptr_ptr = &scom_section.symbol; 3615 scom_symbol = *bfd_com_section_ptr->symbol; 3616 scom_symbol.name = ".scommon"; 3617 scom_symbol.section = &scom_section; 3618 } 3619 S_SET_SEGMENT (sym, &scom_section); 3620 } 3621 3622 /* Double check weak symbols. */ 3623 if (S_IS_WEAK (sym)) 3624 { 3625 if (S_IS_COMMON (sym)) 3626 as_bad (_("symbol `%s' can not be both weak and common"), 3627 S_GET_NAME (sym)); 3628 } 3629 } 3630 3631 /* Add bytes to the symbolic information buffer. */ 3633 3634 static char * 3635 ecoff_add_bytes (char **buf, 3636 char **bufend, 3637 char *bufptr, 3638 unsigned long need) 3639 { 3640 unsigned long at; 3641 unsigned long want; 3642 3643 at = bufptr - *buf; 3644 need -= *bufend - bufptr; 3645 if (need < PAGE_SIZE) 3646 need = PAGE_SIZE; 3647 want = (*bufend - *buf) + need; 3648 *buf = (char *) xrealloc (*buf, want); 3649 *bufend = *buf + want; 3650 return *buf + at; 3651 } 3652 3653 /* Adjust the symbolic information buffer to the alignment required 3654 for the ECOFF target debugging information. */ 3655 3656 static unsigned long 3657 ecoff_padding_adjust (const struct ecoff_debug_swap *backend, 3658 char **buf, 3659 char **bufend, 3660 unsigned long offset, 3661 char **bufptrptr) 3662 { 3663 bfd_size_type align; 3664 3665 align = backend->debug_align; 3666 if ((offset & (align - 1)) != 0) 3667 { 3668 unsigned long add; 3669 3670 add = align - (offset & (align - 1)); 3671 if ((unsigned long) (*bufend - (*buf + offset)) < add) 3672 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add); 3673 memset (*buf + offset, 0, add); 3674 offset += add; 3675 if (bufptrptr != (char **) NULL) 3676 *bufptrptr = *buf + offset; 3677 } 3678 3679 return offset; 3680 } 3681 3682 /* Build the line number information. */ 3683 3684 static unsigned long 3685 ecoff_build_lineno (const struct ecoff_debug_swap *backend, 3686 char **buf, 3687 char **bufend, 3688 unsigned long offset, 3689 long *linecntptr) 3690 { 3691 char *bufptr; 3692 lineno_list_t *l; 3693 lineno_list_t *last; 3694 efdr_t *file; 3695 proc_t *proc; 3696 unsigned long c; 3697 long iline; 3698 long totcount; 3699 lineno_list_t first; 3700 lineno_list_t *local_first_lineno = first_lineno; 3701 3702 if (linecntptr != (long *) NULL) 3703 *linecntptr = 0; 3704 3705 bufptr = *buf + offset; 3706 3707 file = (efdr_t *) NULL; 3708 proc = (proc_t *) NULL; 3709 last = (lineno_list_t *) NULL; 3710 c = offset; 3711 iline = 0; 3712 totcount = 0; 3713 3714 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to 3715 remove this code. */ 3716 /* For some reason the address of the first procedure is ignored 3717 when reading line numbers. This doesn't matter if the address of 3718 the first procedure is 0, but when gcc is generating MIPS 3719 embedded PIC code, it will put strings in the .text section 3720 before the first procedure. We cope by inserting a dummy line if 3721 the address of the first procedure is not 0. Hopefully this 3722 won't screw things up too badly. 3723 3724 Don't do this for ECOFF assembly source line numbers. They work 3725 without this extra attention. */ 3726 if (debug_type != DEBUG_ECOFF 3727 && first_proc_ptr != (proc_t *) NULL 3728 && local_first_lineno != (lineno_list_t *) NULL 3729 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym) 3730 + bfd_get_section_vma (stdoutput, 3731 S_GET_SEGMENT (first_proc_ptr->sym->as_sym))) 3732 != 0)) 3733 { 3734 first.file = local_first_lineno->file; 3735 first.proc = local_first_lineno->proc; 3736 first.frag = &zero_address_frag; 3737 first.paddr = 0; 3738 first.lineno = 0; 3739 3740 first.next = local_first_lineno; 3741 local_first_lineno = &first; 3742 } 3743 3744 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next) 3745 { 3746 long count; 3747 long delta; 3748 3749 /* Get the offset to the memory address of the next line number 3750 (in words). Do this first, so that we can skip ahead to the 3751 next useful line number entry. */ 3752 if (l->next == (lineno_list_t *) NULL) 3753 { 3754 /* We want a count of zero, but it will be decremented 3755 before it is used. */ 3756 count = 1; 3757 } 3758 else if (l->next->frag->fr_address + l->next->paddr 3759 > l->frag->fr_address + l->paddr) 3760 { 3761 count = ((l->next->frag->fr_address + l->next->paddr 3762 - (l->frag->fr_address + l->paddr)) 3763 >> 2); 3764 } 3765 else 3766 { 3767 /* Don't change last, so we still get the right delta. */ 3768 continue; 3769 } 3770 3771 if (l->file != file || l->proc != proc) 3772 { 3773 if (l->proc != proc && proc != (proc_t *) NULL) 3774 proc->pdr.lnHigh = last->lineno; 3775 if (l->file != file && file != (efdr_t *) NULL) 3776 { 3777 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3778 file->fdr.cline = totcount + count; 3779 if (linecntptr != (long *) NULL) 3780 *linecntptr += totcount + count; 3781 totcount = 0; 3782 } 3783 3784 if (l->file != file) 3785 { 3786 efdr_t *last_file = file; 3787 3788 file = l->file; 3789 if (last_file != (efdr_t *) NULL) 3790 file->fdr.ilineBase 3791 = last_file->fdr.ilineBase + last_file->fdr.cline; 3792 else 3793 file->fdr.ilineBase = 0; 3794 file->fdr.cbLineOffset = c; 3795 } 3796 if (l->proc != proc) 3797 { 3798 proc = l->proc; 3799 if (proc != (proc_t *) NULL) 3800 { 3801 proc->pdr.lnLow = l->lineno; 3802 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset; 3803 proc->pdr.iline = totcount; 3804 } 3805 } 3806 3807 last = (lineno_list_t *) NULL; 3808 } 3809 3810 totcount += count; 3811 3812 /* Get the offset to this line number. */ 3813 if (last == (lineno_list_t *) NULL) 3814 delta = 0; 3815 else 3816 delta = l->lineno - last->lineno; 3817 3818 /* Put in the offset to this line number. */ 3819 while (delta != 0) 3820 { 3821 int setcount; 3822 3823 /* 1 is added to each count read. */ 3824 --count; 3825 /* We can only adjust the word count by up to 15 words at a 3826 time. */ 3827 if (count <= 0x0f) 3828 { 3829 setcount = count; 3830 count = 0; 3831 } 3832 else 3833 { 3834 setcount = 0x0f; 3835 count -= 0x0f; 3836 } 3837 if (delta >= -7 && delta <= 7) 3838 { 3839 if (bufptr >= *bufend) 3840 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3841 *bufptr++ = setcount + (delta << 4); 3842 delta = 0; 3843 ++c; 3844 } 3845 else 3846 { 3847 int set; 3848 3849 if (*bufend - bufptr < 3) 3850 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3); 3851 *bufptr++ = setcount + (8 << 4); 3852 if (delta < -0x8000) 3853 { 3854 set = -0x8000; 3855 delta += 0x8000; 3856 } 3857 else if (delta > 0x7fff) 3858 { 3859 set = 0x7fff; 3860 delta -= 0x7fff; 3861 } 3862 else 3863 { 3864 set = delta; 3865 delta = 0; 3866 } 3867 *bufptr++ = set >> 8; 3868 *bufptr++ = set & 0xffff; 3869 c += 3; 3870 } 3871 } 3872 3873 /* Finish adjusting the count. */ 3874 while (count > 0) 3875 { 3876 if (bufptr >= *bufend) 3877 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3878 /* 1 is added to each count read. */ 3879 --count; 3880 if (count > 0x0f) 3881 { 3882 *bufptr++ = 0x0f; 3883 count -= 0x0f; 3884 } 3885 else 3886 { 3887 *bufptr++ = count; 3888 count = 0; 3889 } 3890 ++c; 3891 } 3892 3893 ++iline; 3894 last = l; 3895 } 3896 3897 if (proc != (proc_t *) NULL) 3898 proc->pdr.lnHigh = last->lineno; 3899 if (file != (efdr_t *) NULL) 3900 { 3901 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3902 file->fdr.cline = totcount; 3903 } 3904 3905 if (linecntptr != (long *) NULL) 3906 *linecntptr += totcount; 3907 3908 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr); 3909 3910 return c; 3911 } 3912 3913 /* Build and swap out the symbols. */ 3914 3915 static unsigned long 3916 ecoff_build_symbols (const struct ecoff_debug_swap *backend, 3917 char **buf, 3918 char **bufend, 3919 unsigned long offset) 3920 { 3921 const bfd_size_type external_sym_size = backend->external_sym_size; 3922 void (* const swap_sym_out) (bfd *, const SYMR *, void *) 3923 = backend->swap_sym_out; 3924 char *sym_out; 3925 long isym; 3926 vlinks_t *file_link; 3927 3928 sym_out = *buf + offset; 3929 3930 isym = 0; 3931 3932 /* The symbols are stored by file. */ 3933 for (file_link = file_desc.first; 3934 file_link != (vlinks_t *) NULL; 3935 file_link = file_link->next) 3936 { 3937 int ifilesym; 3938 int fil_cnt; 3939 efdr_t *fil_ptr; 3940 efdr_t *fil_end; 3941 3942 if (file_link->next == (vlinks_t *) NULL) 3943 fil_cnt = file_desc.objects_last_page; 3944 else 3945 fil_cnt = file_desc.objects_per_page; 3946 fil_ptr = file_link->datum->file; 3947 fil_end = fil_ptr + fil_cnt; 3948 for (; fil_ptr < fil_end; fil_ptr++) 3949 { 3950 vlinks_t *sym_link; 3951 3952 fil_ptr->fdr.isymBase = isym; 3953 ifilesym = isym; 3954 for (sym_link = fil_ptr->symbols.first; 3955 sym_link != (vlinks_t *) NULL; 3956 sym_link = sym_link->next) 3957 { 3958 int sym_cnt; 3959 localsym_t *sym_ptr; 3960 localsym_t *sym_end; 3961 3962 if (sym_link->next == (vlinks_t *) NULL) 3963 sym_cnt = fil_ptr->symbols.objects_last_page; 3964 else 3965 sym_cnt = fil_ptr->symbols.objects_per_page; 3966 sym_ptr = sym_link->datum->sym; 3967 sym_end = sym_ptr + sym_cnt; 3968 for (; sym_ptr < sym_end; sym_ptr++) 3969 { 3970 int local; 3971 symbolS *as_sym; 3972 forward_t *f; 3973 3974 know (sym_ptr->file_ptr == fil_ptr); 3975 3976 /* If there is no associated gas symbol, then this 3977 is a pure debugging symbol. We have already 3978 added the name (if any) to fil_ptr->strings. 3979 Otherwise we must decide whether this is an 3980 external or a local symbol (actually, it may be 3981 both if the local provides additional debugging 3982 information for the external). */ 3983 local = 1; 3984 as_sym = sym_ptr->as_sym; 3985 if (as_sym != (symbolS *) NULL) 3986 { 3987 symint_t indx; 3988 3989 /* The value of a block start symbol is the 3990 offset from the start of the procedure. For 3991 other symbols we just use the gas value (but 3992 we must offset it by the vma of the section, 3993 just as BFD does, because BFD will not see 3994 this value). */ 3995 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block 3996 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text) 3997 { 3998 symbolS *begin_sym; 3999 4000 know (sym_ptr->proc_ptr != (proc_t *) NULL); 4001 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 4002 if (S_GET_SEGMENT (as_sym) 4003 != S_GET_SEGMENT (begin_sym)) 4004 as_warn (_(".begin/.bend in different segments")); 4005 sym_ptr->ecoff_sym.asym.value = 4006 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 4007 } 4008 else 4009 sym_ptr->ecoff_sym.asym.value = 4010 (S_GET_VALUE (as_sym) 4011 + bfd_get_section_vma (stdoutput, 4012 S_GET_SEGMENT (as_sym)) 4013 + sym_ptr->addend); 4014 4015 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym); 4016 4017 /* Set st_Proc to st_StaticProc for local 4018 functions. */ 4019 if (sym_ptr->ecoff_sym.asym.st == st_Proc 4020 && S_IS_DEFINED (as_sym) 4021 && ! S_IS_EXTERNAL (as_sym) 4022 && ! S_IS_WEAK (as_sym)) 4023 sym_ptr->ecoff_sym.asym.st = st_StaticProc; 4024 4025 /* Get the type and storage class based on where 4026 the symbol actually wound up. Traditionally, 4027 N_LBRAC and N_RBRAC are *not* relocated. */ 4028 indx = sym_ptr->ecoff_sym.asym.index; 4029 if (sym_ptr->ecoff_sym.asym.st == st_Nil 4030 && sym_ptr->ecoff_sym.asym.sc == sc_Nil 4031 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4032 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC) 4033 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC)))) 4034 { 4035 segT seg; 4036 const char *segname; 4037 st_t st; 4038 sc_t sc; 4039 4040 seg = S_GET_SEGMENT (as_sym); 4041 segname = segment_name (seg); 4042 4043 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4044 && (S_IS_EXTERNAL (as_sym) 4045 || S_IS_WEAK (as_sym) 4046 || ! S_IS_DEFINED (as_sym))) 4047 { 4048 if ((symbol_get_bfdsym (as_sym)->flags 4049 & BSF_FUNCTION) != 0) 4050 st = st_Proc; 4051 else 4052 st = st_Global; 4053 } 4054 else if (seg == text_section) 4055 st = st_Label; 4056 else 4057 st = st_Static; 4058 4059 if (! S_IS_DEFINED (as_sym)) 4060 { 4061 valueT s; 4062 4063 s = symbol_get_obj (as_sym)->ecoff_extern_size; 4064 if (s == 0 4065 || s > bfd_get_gp_size (stdoutput)) 4066 sc = sc_Undefined; 4067 else 4068 { 4069 sc = sc_SUndefined; 4070 sym_ptr->ecoff_sym.asym.value = s; 4071 } 4072 #ifdef S_SET_SIZE 4073 S_SET_SIZE (as_sym, s); 4074 #endif 4075 } 4076 else if (S_IS_COMMON (as_sym)) 4077 { 4078 if (S_GET_VALUE (as_sym) > 0 4079 && (S_GET_VALUE (as_sym) 4080 <= bfd_get_gp_size (stdoutput))) 4081 sc = sc_SCommon; 4082 else 4083 sc = sc_Common; 4084 } 4085 else if (seg == text_section) 4086 sc = sc_Text; 4087 else if (seg == data_section) 4088 sc = sc_Data; 4089 else if (strcmp (segname, ".rdata") == 0 4090 || strcmp (segname, ".rodata") == 0) 4091 sc = sc_RData; 4092 else if (strcmp (segname, ".sdata") == 0) 4093 sc = sc_SData; 4094 else if (seg == bss_section) 4095 sc = sc_Bss; 4096 else if (strcmp (segname, ".sbss") == 0) 4097 sc = sc_SBss; 4098 else if (seg == bfd_abs_section_ptr) 4099 sc = sc_Abs; 4100 else 4101 { 4102 /* This must be a user named section. 4103 This is not possible in ECOFF, but it 4104 is in ELF. */ 4105 sc = sc_Data; 4106 } 4107 4108 sym_ptr->ecoff_sym.asym.st = (int) st; 4109 sym_ptr->ecoff_sym.asym.sc = (int) sc; 4110 } 4111 4112 /* This is just an external symbol if it is 4113 outside a procedure and it has a type. 4114 FIXME: g++ will generate symbols which have 4115 different names in the debugging information 4116 than the actual symbol. Should we handle 4117 them here? */ 4118 if ((S_IS_EXTERNAL (as_sym) 4119 || S_IS_WEAK (as_sym) 4120 || ! S_IS_DEFINED (as_sym)) 4121 && sym_ptr->proc_ptr == (proc_t *) NULL 4122 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil 4123 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)) 4124 local = 0; 4125 4126 /* This is just an external symbol if it is a 4127 common symbol. */ 4128 if (S_IS_COMMON (as_sym)) 4129 local = 0; 4130 4131 /* If an st_end symbol has an associated gas 4132 symbol, then it is a local label created for 4133 a .bend or .end directive. Stabs line 4134 numbers will have \001 in the names. */ 4135 if (local 4136 && sym_ptr->ecoff_sym.asym.st != st_End 4137 && strchr (sym_ptr->name, '\001') == 0) 4138 sym_ptr->ecoff_sym.asym.iss = 4139 add_string (&fil_ptr->strings, 4140 fil_ptr->str_hash, 4141 sym_ptr->name, 4142 (shash_t **) NULL); 4143 } 4144 4145 /* We now know the index of this symbol; fill in 4146 locations that have been waiting for that 4147 information. */ 4148 if (sym_ptr->begin_ptr != (localsym_t *) NULL) 4149 { 4150 localsym_t *begin_ptr; 4151 st_t begin_type; 4152 4153 know (local); 4154 begin_ptr = sym_ptr->begin_ptr; 4155 know (begin_ptr->sym_index != -1); 4156 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index; 4157 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4158 sym_ptr->ecoff_sym.asym.iss = 4159 begin_ptr->ecoff_sym.asym.iss; 4160 4161 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st; 4162 if (begin_type == st_File 4163 || begin_type == st_Block) 4164 { 4165 begin_ptr->ecoff_sym.asym.index = 4166 isym - ifilesym + 1; 4167 (*swap_sym_out) (stdoutput, 4168 &begin_ptr->ecoff_sym.asym, 4169 (*buf 4170 + offset 4171 + (begin_ptr->sym_index 4172 * external_sym_size))); 4173 } 4174 else 4175 { 4176 know (begin_ptr->index_ptr != (aux_t *) NULL); 4177 begin_ptr->index_ptr->data.isym = 4178 isym - ifilesym + 1; 4179 } 4180 4181 /* The value of the symbol marking the end of a 4182 procedure is the size of the procedure. The 4183 value of the symbol marking the end of a 4184 block is the offset from the start of the 4185 procedure to the block. */ 4186 if (begin_type == st_Proc 4187 || begin_type == st_StaticProc) 4188 { 4189 know (as_sym != (symbolS *) NULL); 4190 know (begin_ptr->as_sym != (symbolS *) NULL); 4191 if (S_GET_SEGMENT (as_sym) 4192 != S_GET_SEGMENT (begin_ptr->as_sym)) 4193 as_warn (_(".begin/.bend in different segments")); 4194 sym_ptr->ecoff_sym.asym.value = 4195 (S_GET_VALUE (as_sym) 4196 - S_GET_VALUE (begin_ptr->as_sym)); 4197 4198 /* If the size is odd, this is probably a 4199 mips16 function; force it to be even. */ 4200 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0) 4201 ++sym_ptr->ecoff_sym.asym.value; 4202 4203 #ifdef S_SET_SIZE 4204 S_SET_SIZE (begin_ptr->as_sym, 4205 sym_ptr->ecoff_sym.asym.value); 4206 #endif 4207 } 4208 else if (begin_type == st_Block 4209 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4210 { 4211 symbolS *begin_sym; 4212 4213 know (as_sym != (symbolS *) NULL); 4214 know (sym_ptr->proc_ptr != (proc_t *) NULL); 4215 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 4216 if (S_GET_SEGMENT (as_sym) 4217 != S_GET_SEGMENT (begin_sym)) 4218 as_warn (_(".begin/.bend in different segments")); 4219 sym_ptr->ecoff_sym.asym.value = 4220 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 4221 } 4222 } 4223 4224 for (f = sym_ptr->forward_ref; 4225 f != (forward_t *) NULL; 4226 f = f->next) 4227 { 4228 know (local); 4229 f->ifd_ptr->data.isym = fil_ptr->file_index; 4230 f->index_ptr->data.rndx.index = isym - ifilesym; 4231 } 4232 4233 if (local) 4234 { 4235 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size) 4236 sym_out = ecoff_add_bytes (buf, bufend, 4237 sym_out, 4238 external_sym_size); 4239 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym, 4240 sym_out); 4241 sym_out += external_sym_size; 4242 4243 sym_ptr->sym_index = isym; 4244 4245 if (sym_ptr->proc_ptr != (proc_t *) NULL 4246 && sym_ptr->proc_ptr->sym == sym_ptr) 4247 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym; 4248 4249 ++isym; 4250 } 4251 4252 /* Record the local symbol index and file number in 4253 case this is an external symbol. Note that this 4254 destroys the asym.index field. */ 4255 if (as_sym != (symbolS *) NULL 4256 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr) 4257 { 4258 if ((sym_ptr->ecoff_sym.asym.st == st_Proc 4259 || sym_ptr->ecoff_sym.asym.st == st_StaticProc) 4260 && local) 4261 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1; 4262 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index; 4263 4264 /* Don't try to merge an FDR which has an 4265 external symbol attached to it. */ 4266 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym)) 4267 fil_ptr->fdr.fMerge = 0; 4268 } 4269 } 4270 } 4271 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase; 4272 } 4273 } 4274 4275 return offset + isym * external_sym_size; 4276 } 4277 4278 /* Swap out the procedure information. */ 4279 4280 static unsigned long 4281 ecoff_build_procs (const struct ecoff_debug_swap *backend, 4282 char **buf, 4283 char **bufend, 4284 unsigned long offset) 4285 { 4286 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4287 void (* const swap_pdr_out) (bfd *, const PDR *, void *) 4288 = backend->swap_pdr_out; 4289 char *pdr_out; 4290 long iproc; 4291 vlinks_t *file_link; 4292 4293 pdr_out = *buf + offset; 4294 4295 iproc = 0; 4296 4297 /* The procedures are stored by file. */ 4298 for (file_link = file_desc.first; 4299 file_link != (vlinks_t *) NULL; 4300 file_link = file_link->next) 4301 { 4302 int fil_cnt; 4303 efdr_t *fil_ptr; 4304 efdr_t *fil_end; 4305 4306 if (file_link->next == (vlinks_t *) NULL) 4307 fil_cnt = file_desc.objects_last_page; 4308 else 4309 fil_cnt = file_desc.objects_per_page; 4310 fil_ptr = file_link->datum->file; 4311 fil_end = fil_ptr + fil_cnt; 4312 for (; fil_ptr < fil_end; fil_ptr++) 4313 { 4314 vlinks_t *proc_link; 4315 int first; 4316 4317 fil_ptr->fdr.ipdFirst = iproc; 4318 first = 1; 4319 for (proc_link = fil_ptr->procs.first; 4320 proc_link != (vlinks_t *) NULL; 4321 proc_link = proc_link->next) 4322 { 4323 int prc_cnt; 4324 proc_t *proc_ptr; 4325 proc_t *proc_end; 4326 4327 if (proc_link->next == (vlinks_t *) NULL) 4328 prc_cnt = fil_ptr->procs.objects_last_page; 4329 else 4330 prc_cnt = fil_ptr->procs.objects_per_page; 4331 proc_ptr = proc_link->datum->proc; 4332 proc_end = proc_ptr + prc_cnt; 4333 for (; proc_ptr < proc_end; proc_ptr++) 4334 { 4335 symbolS *adr_sym; 4336 unsigned long adr; 4337 4338 adr_sym = proc_ptr->sym->as_sym; 4339 adr = (S_GET_VALUE (adr_sym) 4340 + bfd_get_section_vma (stdoutput, 4341 S_GET_SEGMENT (adr_sym))); 4342 if (first) 4343 { 4344 /* This code used to force the adr of the very 4345 first fdr to be 0. However, the native tools 4346 don't do that, and I can't remember why it 4347 used to work that way, so I took it out. */ 4348 fil_ptr->fdr.adr = adr; 4349 first = 0; 4350 } 4351 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr; 4352 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size) 4353 pdr_out = ecoff_add_bytes (buf, bufend, 4354 pdr_out, 4355 external_pdr_size); 4356 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out); 4357 pdr_out += external_pdr_size; 4358 ++iproc; 4359 } 4360 } 4361 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst; 4362 } 4363 } 4364 4365 return offset + iproc * external_pdr_size; 4366 } 4367 4368 /* Swap out the aux information. */ 4369 4370 static unsigned long 4371 ecoff_build_aux (const struct ecoff_debug_swap *backend, 4372 char **buf, 4373 char **bufend, 4374 unsigned long offset) 4375 { 4376 int bigendian; 4377 union aux_ext *aux_out; 4378 long iaux; 4379 vlinks_t *file_link; 4380 4381 bigendian = bfd_big_endian (stdoutput); 4382 4383 aux_out = (union aux_ext *) (*buf + offset); 4384 4385 iaux = 0; 4386 4387 /* The aux entries are stored by file. */ 4388 for (file_link = file_desc.first; 4389 file_link != (vlinks_t *) NULL; 4390 file_link = file_link->next) 4391 { 4392 int fil_cnt; 4393 efdr_t *fil_ptr; 4394 efdr_t *fil_end; 4395 4396 if (file_link->next == (vlinks_t *) NULL) 4397 fil_cnt = file_desc.objects_last_page; 4398 else 4399 fil_cnt = file_desc.objects_per_page; 4400 fil_ptr = file_link->datum->file; 4401 fil_end = fil_ptr + fil_cnt; 4402 for (; fil_ptr < fil_end; fil_ptr++) 4403 { 4404 vlinks_t *aux_link; 4405 4406 fil_ptr->fdr.fBigendian = bigendian; 4407 fil_ptr->fdr.iauxBase = iaux; 4408 for (aux_link = fil_ptr->aux_syms.first; 4409 aux_link != (vlinks_t *) NULL; 4410 aux_link = aux_link->next) 4411 { 4412 int aux_cnt; 4413 aux_t *aux_ptr; 4414 aux_t *aux_end; 4415 4416 if (aux_link->next == (vlinks_t *) NULL) 4417 aux_cnt = fil_ptr->aux_syms.objects_last_page; 4418 else 4419 aux_cnt = fil_ptr->aux_syms.objects_per_page; 4420 aux_ptr = aux_link->datum->aux; 4421 aux_end = aux_ptr + aux_cnt; 4422 for (; aux_ptr < aux_end; aux_ptr++) 4423 { 4424 if ((unsigned long) (*bufend - (char *) aux_out) 4425 < sizeof (union aux_ext)) 4426 aux_out = ((union aux_ext *) 4427 ecoff_add_bytes (buf, bufend, 4428 (char *) aux_out, 4429 sizeof (union aux_ext))); 4430 switch (aux_ptr->type) 4431 { 4432 case aux_tir: 4433 (*backend->swap_tir_out) (bigendian, 4434 &aux_ptr->data.ti, 4435 &aux_out->a_ti); 4436 break; 4437 case aux_rndx: 4438 (*backend->swap_rndx_out) (bigendian, 4439 &aux_ptr->data.rndx, 4440 &aux_out->a_rndx); 4441 break; 4442 case aux_dnLow: 4443 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow, 4444 aux_out); 4445 break; 4446 case aux_dnHigh: 4447 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh, 4448 aux_out); 4449 break; 4450 case aux_isym: 4451 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym, 4452 aux_out); 4453 break; 4454 case aux_iss: 4455 AUX_PUT_ISS (bigendian, aux_ptr->data.iss, 4456 aux_out); 4457 break; 4458 case aux_width: 4459 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width, 4460 aux_out); 4461 break; 4462 case aux_count: 4463 AUX_PUT_COUNT (bigendian, aux_ptr->data.count, 4464 aux_out); 4465 break; 4466 } 4467 4468 ++aux_out; 4469 ++iaux; 4470 } 4471 } 4472 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase; 4473 } 4474 } 4475 4476 return ecoff_padding_adjust (backend, buf, bufend, 4477 offset + iaux * sizeof (union aux_ext), 4478 (char **) NULL); 4479 } 4480 4481 /* Copy out the strings from a varray_t. This returns the number of 4482 bytes copied, rather than the new offset. */ 4483 4484 static unsigned long 4485 ecoff_build_strings (char **buf, 4486 char **bufend, 4487 unsigned long offset, 4488 varray_t *vp) 4489 { 4490 unsigned long istr; 4491 char *str_out; 4492 vlinks_t *str_link; 4493 4494 str_out = *buf + offset; 4495 4496 istr = 0; 4497 4498 for (str_link = vp->first; 4499 str_link != (vlinks_t *) NULL; 4500 str_link = str_link->next) 4501 { 4502 unsigned long str_cnt; 4503 4504 if (str_link->next == (vlinks_t *) NULL) 4505 str_cnt = vp->objects_last_page; 4506 else 4507 str_cnt = vp->objects_per_page; 4508 4509 if ((unsigned long)(*bufend - str_out) < str_cnt) 4510 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt); 4511 4512 memcpy (str_out, str_link->datum->byte, str_cnt); 4513 str_out += str_cnt; 4514 istr += str_cnt; 4515 } 4516 4517 return istr; 4518 } 4519 4520 /* Dump out the local strings. */ 4521 4522 static unsigned long 4523 ecoff_build_ss (const struct ecoff_debug_swap *backend, 4524 char **buf, 4525 char **bufend, 4526 unsigned long offset) 4527 { 4528 long iss; 4529 vlinks_t *file_link; 4530 4531 iss = 0; 4532 4533 for (file_link = file_desc.first; 4534 file_link != (vlinks_t *) NULL; 4535 file_link = file_link->next) 4536 { 4537 int fil_cnt; 4538 efdr_t *fil_ptr; 4539 efdr_t *fil_end; 4540 4541 if (file_link->next == (vlinks_t *) NULL) 4542 fil_cnt = file_desc.objects_last_page; 4543 else 4544 fil_cnt = file_desc.objects_per_page; 4545 fil_ptr = file_link->datum->file; 4546 fil_end = fil_ptr + fil_cnt; 4547 for (; fil_ptr < fil_end; fil_ptr++) 4548 { 4549 long ss_cnt; 4550 4551 fil_ptr->fdr.issBase = iss; 4552 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss, 4553 &fil_ptr->strings); 4554 fil_ptr->fdr.cbSs = ss_cnt; 4555 iss += ss_cnt; 4556 } 4557 } 4558 4559 return ecoff_padding_adjust (backend, buf, bufend, offset + iss, 4560 (char **) NULL); 4561 } 4562 4563 /* Swap out the file descriptors. */ 4564 4565 static unsigned long 4566 ecoff_build_fdr (const struct ecoff_debug_swap *backend, 4567 char **buf, 4568 char **bufend, 4569 unsigned long offset) 4570 { 4571 const bfd_size_type external_fdr_size = backend->external_fdr_size; 4572 void (* const swap_fdr_out) (bfd *, const FDR *, void *) 4573 = backend->swap_fdr_out; 4574 long ifile; 4575 char *fdr_out; 4576 vlinks_t *file_link; 4577 4578 ifile = 0; 4579 4580 fdr_out = *buf + offset; 4581 4582 for (file_link = file_desc.first; 4583 file_link != (vlinks_t *) NULL; 4584 file_link = file_link->next) 4585 { 4586 int fil_cnt; 4587 efdr_t *fil_ptr; 4588 efdr_t *fil_end; 4589 4590 if (file_link->next == (vlinks_t *) NULL) 4591 fil_cnt = file_desc.objects_last_page; 4592 else 4593 fil_cnt = file_desc.objects_per_page; 4594 fil_ptr = file_link->datum->file; 4595 fil_end = fil_ptr + fil_cnt; 4596 for (; fil_ptr < fil_end; fil_ptr++) 4597 { 4598 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size) 4599 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out, 4600 external_fdr_size); 4601 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out); 4602 fdr_out += external_fdr_size; 4603 ++ifile; 4604 } 4605 } 4606 4607 return offset + ifile * external_fdr_size; 4608 } 4609 4610 /* Set up the external symbols. These are supposed to be handled by 4611 the backend. This routine just gets the right information and 4612 calls a backend function to deal with it. */ 4613 4614 static void 4615 ecoff_setup_ext (void) 4616 { 4617 symbolS *sym; 4618 4619 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4620 { 4621 if (symbol_get_obj (sym)->ecoff_symbol == NULL) 4622 continue; 4623 4624 /* If this is a local symbol, then force the fields to zero. */ 4625 if (! S_IS_EXTERNAL (sym) 4626 && ! S_IS_WEAK (sym) 4627 && S_IS_DEFINED (sym)) 4628 { 4629 struct localsym *lsym; 4630 4631 lsym = symbol_get_obj (sym)->ecoff_symbol; 4632 lsym->ecoff_sym.asym.value = 0; 4633 lsym->ecoff_sym.asym.st = (int) st_Nil; 4634 lsym->ecoff_sym.asym.sc = (int) sc_Nil; 4635 lsym->ecoff_sym.asym.index = indexNil; 4636 } 4637 4638 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym); 4639 } 4640 } 4641 4642 /* Build the ECOFF debugging information. */ 4643 4644 unsigned long 4645 ecoff_build_debug (HDRR *hdr, 4646 char **bufp, 4647 const struct ecoff_debug_swap *backend) 4648 { 4649 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4650 tag_t *ptag; 4651 tag_t *ptag_next; 4652 efdr_t *fil_ptr; 4653 int end_warning; 4654 efdr_t *hold_file_ptr; 4655 proc_t *hold_proc_ptr; 4656 symbolS *sym; 4657 char *buf; 4658 char *bufend; 4659 unsigned long offset; 4660 4661 /* Make sure we have a file. */ 4662 if (first_file == (efdr_t *) NULL) 4663 add_file ((const char *) NULL, 0, 1); 4664 4665 /* Handle any top level tags. */ 4666 for (ptag = top_tag_head->first_tag; 4667 ptag != (tag_t *) NULL; 4668 ptag = ptag_next) 4669 { 4670 if (ptag->forward_ref != (forward_t *) NULL) 4671 add_unknown_tag (ptag); 4672 4673 ptag_next = ptag->same_block; 4674 ptag->hash_ptr->tag_ptr = ptag->same_name; 4675 free_tag (ptag); 4676 } 4677 4678 free_thead (top_tag_head); 4679 4680 /* Look through the symbols. Add debugging information for each 4681 symbol that has not already received it. */ 4682 hold_file_ptr = cur_file_ptr; 4683 hold_proc_ptr = cur_proc_ptr; 4684 cur_proc_ptr = (proc_t *) NULL; 4685 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4686 { 4687 if (symbol_get_obj (sym)->ecoff_symbol != NULL 4688 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL 4689 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0) 4690 continue; 4691 4692 cur_file_ptr = symbol_get_obj (sym)->ecoff_file; 4693 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym, 4694 (bfd_vma) 0, S_GET_VALUE (sym), indexNil); 4695 } 4696 cur_proc_ptr = hold_proc_ptr; 4697 cur_file_ptr = hold_file_ptr; 4698 4699 /* Output an ending symbol for all the files. We have to do this 4700 here for the last file, so we may as well do it for all of the 4701 files. */ 4702 end_warning = 0; 4703 for (fil_ptr = first_file; 4704 fil_ptr != (efdr_t *) NULL; 4705 fil_ptr = fil_ptr->next_file) 4706 { 4707 cur_file_ptr = fil_ptr; 4708 while (cur_file_ptr->cur_scope != (scope_t *) NULL 4709 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL) 4710 { 4711 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev; 4712 if (! end_warning && ! cur_file_ptr->fake) 4713 { 4714 as_warn (_("missing .end or .bend at end of file")); 4715 end_warning = 1; 4716 } 4717 } 4718 if (cur_file_ptr->cur_scope != (scope_t *) NULL) 4719 (void) add_ecoff_symbol ((const char *) NULL, 4720 st_End, sc_Text, 4721 (symbolS *) NULL, 4722 (bfd_vma) 0, 4723 (symint_t) 0, 4724 (symint_t) 0); 4725 } 4726 4727 /* Build the symbolic information. */ 4728 offset = 0; 4729 buf = (char *) xmalloc (PAGE_SIZE); 4730 bufend = buf + PAGE_SIZE; 4731 4732 /* Build the line number information. */ 4733 hdr->cbLineOffset = offset; 4734 offset = ecoff_build_lineno (backend, &buf, &bufend, offset, 4735 &hdr->ilineMax); 4736 hdr->cbLine = offset - hdr->cbLineOffset; 4737 4738 /* We don't use dense numbers at all. */ 4739 hdr->idnMax = 0; 4740 hdr->cbDnOffset = 0; 4741 4742 /* We can't build the PDR table until we have built the symbols, 4743 because a PDR contains a symbol index. However, we set aside 4744 space at this point. */ 4745 hdr->ipdMax = proc_cnt; 4746 hdr->cbPdOffset = offset; 4747 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size) 4748 (void) ecoff_add_bytes (&buf, &bufend, buf + offset, 4749 proc_cnt * external_pdr_size); 4750 offset += proc_cnt * external_pdr_size; 4751 4752 /* Build the local symbols. */ 4753 hdr->cbSymOffset = offset; 4754 offset = ecoff_build_symbols (backend, &buf, &bufend, offset); 4755 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size; 4756 4757 /* Building the symbols initializes the symbol index in the PDR's. 4758 Now we can swap out the PDR's. */ 4759 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset); 4760 4761 /* We don't use optimization symbols. */ 4762 hdr->ioptMax = 0; 4763 hdr->cbOptOffset = 0; 4764 4765 /* Swap out the auxiliary type information. */ 4766 hdr->cbAuxOffset = offset; 4767 offset = ecoff_build_aux (backend, &buf, &bufend, offset); 4768 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext); 4769 4770 /* Copy out the local strings. */ 4771 hdr->cbSsOffset = offset; 4772 offset = ecoff_build_ss (backend, &buf, &bufend, offset); 4773 hdr->issMax = offset - hdr->cbSsOffset; 4774 4775 /* We don't use relative file descriptors. */ 4776 hdr->crfd = 0; 4777 hdr->cbRfdOffset = 0; 4778 4779 /* Swap out the file descriptors. */ 4780 hdr->cbFdOffset = offset; 4781 offset = ecoff_build_fdr (backend, &buf, &bufend, offset); 4782 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size; 4783 4784 /* Set up the external symbols, which are handled by the BFD back 4785 end. */ 4786 hdr->issExtMax = 0; 4787 hdr->cbSsExtOffset = 0; 4788 hdr->iextMax = 0; 4789 hdr->cbExtOffset = 0; 4790 ecoff_setup_ext (); 4791 4792 know ((offset & (backend->debug_align - 1)) == 0); 4793 4794 /* FIXME: This value should be determined from the .verstamp directive, 4795 with reasonable defaults in config files. */ 4796 #ifdef TC_ALPHA 4797 hdr->vstamp = 0x030b; 4798 #else 4799 hdr->vstamp = 0x020b; 4800 #endif 4801 4802 *bufp = buf; 4803 return offset; 4804 } 4805 4806 /* Allocate a cluster of pages. */ 4808 4809 #ifndef MALLOC_CHECK 4810 4811 static page_type * 4812 allocate_cluster (unsigned long npages) 4813 { 4814 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE); 4815 4816 #ifdef ECOFF_DEBUG 4817 if (debug > 3) 4818 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value); 4819 #endif 4820 4821 memset (value, 0, npages * PAGE_USIZE); 4822 4823 return value; 4824 } 4825 4826 static page_type *cluster_ptr = NULL; 4827 static unsigned long pages_left = 0; 4828 4829 #endif /* MALLOC_CHECK */ 4830 4831 /* Allocate one page (which is initialized to 0). */ 4832 4833 static page_type * 4834 allocate_page (void) 4835 { 4836 #ifndef MALLOC_CHECK 4837 4838 if (pages_left == 0) 4839 { 4840 pages_left = MAX_CLUSTER_PAGES; 4841 cluster_ptr = allocate_cluster (pages_left); 4842 } 4843 4844 pages_left--; 4845 return cluster_ptr++; 4846 4847 #else /* MALLOC_CHECK */ 4848 4849 page_type *ptr; 4850 4851 ptr = xmalloc (PAGE_USIZE); 4852 memset (ptr, 0, PAGE_USIZE); 4853 return ptr; 4854 4855 #endif /* MALLOC_CHECK */ 4856 } 4857 4858 /* Allocate scoping information. */ 4860 4861 static scope_t * 4862 allocate_scope (void) 4863 { 4864 scope_t *ptr; 4865 static scope_t initial_scope; 4866 4867 #ifndef MALLOC_CHECK 4868 4869 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4870 if (ptr != (scope_t *) NULL) 4871 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free; 4872 else 4873 { 4874 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated; 4875 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page; 4876 4877 if (unallocated == 0) 4878 { 4879 unallocated = PAGE_SIZE / sizeof (scope_t); 4880 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page (); 4881 alloc_counts[(int) alloc_type_scope].total_pages++; 4882 } 4883 4884 ptr = &cur_page->scope[--unallocated]; 4885 alloc_counts[(int) alloc_type_scope].unallocated = unallocated; 4886 } 4887 4888 #else 4889 4890 ptr = (scope_t *) xmalloc (sizeof (scope_t)); 4891 4892 #endif 4893 4894 alloc_counts[(int) alloc_type_scope].total_alloc++; 4895 *ptr = initial_scope; 4896 return ptr; 4897 } 4898 4899 /* Free scoping information. */ 4900 4901 static void 4902 free_scope (scope_t *ptr) 4903 { 4904 alloc_counts[(int) alloc_type_scope].total_free++; 4905 4906 #ifndef MALLOC_CHECK 4907 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4908 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr; 4909 #else 4910 free ((void *) ptr); 4911 #endif 4912 } 4913 4914 /* Allocate links for pages in a virtual array. */ 4916 4917 static vlinks_t * 4918 allocate_vlinks (void) 4919 { 4920 vlinks_t *ptr; 4921 static vlinks_t initial_vlinks; 4922 4923 #ifndef MALLOC_CHECK 4924 4925 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated; 4926 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page; 4927 4928 if (unallocated == 0) 4929 { 4930 unallocated = PAGE_SIZE / sizeof (vlinks_t); 4931 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page (); 4932 alloc_counts[(int) alloc_type_vlinks].total_pages++; 4933 } 4934 4935 ptr = &cur_page->vlinks[--unallocated]; 4936 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated; 4937 4938 #else 4939 4940 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t)); 4941 4942 #endif 4943 4944 alloc_counts[(int) alloc_type_vlinks].total_alloc++; 4945 *ptr = initial_vlinks; 4946 return ptr; 4947 } 4948 4949 /* Allocate string hash buckets. */ 4951 4952 static shash_t * 4953 allocate_shash (void) 4954 { 4955 shash_t *ptr; 4956 static shash_t initial_shash; 4957 4958 #ifndef MALLOC_CHECK 4959 4960 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated; 4961 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page; 4962 4963 if (unallocated == 0) 4964 { 4965 unallocated = PAGE_SIZE / sizeof (shash_t); 4966 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page (); 4967 alloc_counts[(int) alloc_type_shash].total_pages++; 4968 } 4969 4970 ptr = &cur_page->shash[--unallocated]; 4971 alloc_counts[(int) alloc_type_shash].unallocated = unallocated; 4972 4973 #else 4974 4975 ptr = (shash_t *) xmalloc (sizeof (shash_t)); 4976 4977 #endif 4978 4979 alloc_counts[(int) alloc_type_shash].total_alloc++; 4980 *ptr = initial_shash; 4981 return ptr; 4982 } 4983 4984 /* Allocate type hash buckets. */ 4986 4987 static thash_t * 4988 allocate_thash (void) 4989 { 4990 thash_t *ptr; 4991 static thash_t initial_thash; 4992 4993 #ifndef MALLOC_CHECK 4994 4995 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated; 4996 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page; 4997 4998 if (unallocated == 0) 4999 { 5000 unallocated = PAGE_SIZE / sizeof (thash_t); 5001 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page (); 5002 alloc_counts[(int) alloc_type_thash].total_pages++; 5003 } 5004 5005 ptr = &cur_page->thash[--unallocated]; 5006 alloc_counts[(int) alloc_type_thash].unallocated = unallocated; 5007 5008 #else 5009 5010 ptr = (thash_t *) xmalloc (sizeof (thash_t)); 5011 5012 #endif 5013 5014 alloc_counts[(int) alloc_type_thash].total_alloc++; 5015 *ptr = initial_thash; 5016 return ptr; 5017 } 5018 5019 /* Allocate structure, union, or enum tag information. */ 5021 5022 static tag_t * 5023 allocate_tag (void) 5024 { 5025 tag_t *ptr; 5026 static tag_t initial_tag; 5027 5028 #ifndef MALLOC_CHECK 5029 5030 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5031 if (ptr != (tag_t *) NULL) 5032 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free; 5033 else 5034 { 5035 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated; 5036 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page; 5037 5038 if (unallocated == 0) 5039 { 5040 unallocated = PAGE_SIZE / sizeof (tag_t); 5041 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page (); 5042 alloc_counts[(int) alloc_type_tag].total_pages++; 5043 } 5044 5045 ptr = &cur_page->tag[--unallocated]; 5046 alloc_counts[(int) alloc_type_tag].unallocated = unallocated; 5047 } 5048 5049 #else 5050 5051 ptr = (tag_t *) xmalloc (sizeof (tag_t)); 5052 5053 #endif 5054 5055 alloc_counts[(int) alloc_type_tag].total_alloc++; 5056 *ptr = initial_tag; 5057 return ptr; 5058 } 5059 5060 /* Free scoping information. */ 5061 5062 static void 5063 free_tag (tag_t *ptr) 5064 { 5065 alloc_counts[(int) alloc_type_tag].total_free++; 5066 5067 #ifndef MALLOC_CHECK 5068 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5069 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr; 5070 #else 5071 free ((PTR_T) ptr); 5072 #endif 5073 } 5074 5075 /* Allocate forward reference to a yet unknown tag. */ 5077 5078 static forward_t * 5079 allocate_forward (void) 5080 { 5081 forward_t *ptr; 5082 static forward_t initial_forward; 5083 5084 #ifndef MALLOC_CHECK 5085 5086 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated; 5087 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page; 5088 5089 if (unallocated == 0) 5090 { 5091 unallocated = PAGE_SIZE / sizeof (forward_t); 5092 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page (); 5093 alloc_counts[(int) alloc_type_forward].total_pages++; 5094 } 5095 5096 ptr = &cur_page->forward[--unallocated]; 5097 alloc_counts[(int) alloc_type_forward].unallocated = unallocated; 5098 5099 #else 5100 5101 ptr = (forward_t *) xmalloc (sizeof (forward_t)); 5102 5103 #endif 5104 5105 alloc_counts[(int) alloc_type_forward].total_alloc++; 5106 *ptr = initial_forward; 5107 return ptr; 5108 } 5109 5110 /* Allocate head of type hash list. */ 5112 5113 static thead_t * 5114 allocate_thead (void) 5115 { 5116 thead_t *ptr; 5117 static thead_t initial_thead; 5118 5119 #ifndef MALLOC_CHECK 5120 5121 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5122 if (ptr != (thead_t *) NULL) 5123 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free; 5124 else 5125 { 5126 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated; 5127 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page; 5128 5129 if (unallocated == 0) 5130 { 5131 unallocated = PAGE_SIZE / sizeof (thead_t); 5132 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page (); 5133 alloc_counts[(int) alloc_type_thead].total_pages++; 5134 } 5135 5136 ptr = &cur_page->thead[--unallocated]; 5137 alloc_counts[(int) alloc_type_thead].unallocated = unallocated; 5138 } 5139 5140 #else 5141 5142 ptr = (thead_t *) xmalloc (sizeof (thead_t)); 5143 5144 #endif 5145 5146 alloc_counts[(int) alloc_type_thead].total_alloc++; 5147 *ptr = initial_thead; 5148 return ptr; 5149 } 5150 5151 /* Free scoping information. */ 5152 5153 static void 5154 free_thead (thead_t *ptr) 5155 { 5156 alloc_counts[(int) alloc_type_thead].total_free++; 5157 5158 #ifndef MALLOC_CHECK 5159 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5160 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr; 5161 #else 5162 free ((PTR_T) ptr); 5163 #endif 5164 } 5165 5166 static lineno_list_t * 5168 allocate_lineno_list (void) 5169 { 5170 lineno_list_t *ptr; 5171 static lineno_list_t initial_lineno_list; 5172 5173 #ifndef MALLOC_CHECK 5174 5175 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated; 5176 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page; 5177 5178 if (unallocated == 0) 5179 { 5180 unallocated = PAGE_SIZE / sizeof (lineno_list_t); 5181 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page (); 5182 alloc_counts[(int) alloc_type_lineno].total_pages++; 5183 } 5184 5185 ptr = &cur_page->lineno[--unallocated]; 5186 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated; 5187 5188 #else 5189 5190 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t)); 5191 5192 #endif 5193 5194 alloc_counts[(int) alloc_type_lineno].total_alloc++; 5195 *ptr = initial_lineno_list; 5196 return ptr; 5197 } 5198 5199 void 5200 ecoff_set_gp_prolog_size (int sz) 5201 { 5202 if (cur_proc_ptr == 0) 5203 return; 5204 5205 cur_proc_ptr->pdr.gp_prologue = sz; 5206 if (cur_proc_ptr->pdr.gp_prologue != sz) 5207 { 5208 as_warn (_("GP prologue size exceeds field size, using 0 instead")); 5209 cur_proc_ptr->pdr.gp_prologue = 0; 5210 } 5211 5212 cur_proc_ptr->pdr.gp_used = 1; 5213 } 5214 5215 int 5216 ecoff_no_current_file (void) 5217 { 5218 return cur_file_ptr == (efdr_t *) NULL; 5219 } 5220 5221 void 5222 ecoff_generate_asm_lineno (void) 5223 { 5224 unsigned int lineno; 5225 char *filename; 5226 lineno_list_t *list; 5227 5228 as_where (&filename, &lineno); 5229 5230 if (current_stabs_filename == (char *) NULL 5231 || filename_cmp (current_stabs_filename, filename)) 5232 add_file (filename, 0, 1); 5233 5234 list = allocate_lineno_list (); 5235 5236 list->next = (lineno_list_t *) NULL; 5237 list->file = cur_file_ptr; 5238 list->proc = cur_proc_ptr; 5239 list->frag = frag_now; 5240 list->paddr = frag_now_fix (); 5241 list->lineno = lineno; 5242 5243 /* We don't want to merge files which have line numbers. */ 5244 cur_file_ptr->fdr.fMerge = 0; 5245 5246 /* A .loc directive will sometimes appear before a .ent directive, 5247 which means that cur_proc_ptr will be NULL here. Arrange to 5248 patch this up. */ 5249 if (cur_proc_ptr == (proc_t *) NULL) 5250 { 5251 lineno_list_t **pl; 5252 5253 pl = &noproc_lineno; 5254 while (*pl != (lineno_list_t *) NULL) 5255 pl = &(*pl)->next; 5256 *pl = list; 5257 } 5258 else 5259 { 5260 last_lineno = list; 5261 *last_lineno_ptr = list; 5262 last_lineno_ptr = &list->next; 5263 } 5264 } 5265 5266 #else 5267 5268 void 5269 ecoff_generate_asm_lineno (void) 5270 { 5271 } 5272 5273 #endif /* ECOFF_DEBUGGING */ 5274
Indexes created Sun Mar 15 00:25:29 UTC 2026