ecoff.c revision 1.8
1 /* ECOFF debugging support. 2 Copyright (C) 1993-2022 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 indices 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 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 htab_t 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 (htab_t)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 htab_t 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 htab_t 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, int aent); 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 = str_htab_create (); 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 htab_t 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 *) str_hash_find (hash_tbl, str); 1569 if (hash_ptr == (shash_t *) NULL) 1570 { 1571 if (vp->objects_last_page + len >= PAGE_USIZE) 1572 { 1573 vp->num_allocated = 1574 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE; 1575 add_varray_page (vp); 1576 } 1577 1578 hash_ptr = allocate_shash (); 1579 hash_ptr->indx = vp->num_allocated; 1580 1581 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page]; 1582 1583 vp->objects_last_page += len + 1; 1584 vp->num_allocated += len + 1; 1585 1586 strcpy (hash_ptr->string, str); 1587 1588 if (str_hash_insert (hash_tbl, str, hash_ptr, 0) != NULL) 1589 as_fatal (_("duplicate %s"), str); 1590 } 1591 1592 if (ret_hash != (shash_t **) NULL) 1593 *ret_hash = hash_ptr; 1594 1595 return hash_ptr->indx; 1596 } 1597 1598 /* Add debugging information for a symbol. */ 1600 1601 static localsym_t * 1602 add_ecoff_symbol (const char *str, /* symbol name */ 1603 st_t type, /* symbol type */ 1604 sc_t storage, /* storage class */ 1605 symbolS *sym_value, /* associated symbol. */ 1606 bfd_vma addend, /* addend to sym_value. */ 1607 symint_t value, /* value of symbol */ 1608 symint_t indx /* index to local/aux. syms */) 1609 { 1610 localsym_t *psym; 1611 scope_t *pscope; 1612 thead_t *ptag_head; 1613 tag_t *ptag; 1614 tag_t *ptag_next; 1615 varray_t *vp; 1616 int scope_delta = 0; 1617 shash_t *hash_ptr = (shash_t *) NULL; 1618 1619 if (cur_file_ptr == (efdr_t *) NULL) 1620 as_fatal (_("no current file pointer")); 1621 1622 vp = &cur_file_ptr->symbols; 1623 1624 if (vp->objects_last_page == vp->objects_per_page) 1625 add_varray_page (vp); 1626 1627 psym = &vp->last->datum->sym[vp->objects_last_page++]; 1628 1629 if (str == (const char *) NULL && sym_value != (symbolS *) NULL) 1630 psym->name = S_GET_NAME (sym_value); 1631 else 1632 psym->name = str; 1633 psym->as_sym = sym_value; 1634 if (sym_value != (symbolS *) NULL) 1635 symbol_get_obj (sym_value)->ecoff_symbol = psym; 1636 psym->addend = addend; 1637 psym->file_ptr = cur_file_ptr; 1638 psym->proc_ptr = cur_proc_ptr; 1639 psym->begin_ptr = (localsym_t *) NULL; 1640 psym->index_ptr = (aux_t *) NULL; 1641 psym->forward_ref = (forward_t *) NULL; 1642 psym->sym_index = -1; 1643 memset (&psym->ecoff_sym, 0, sizeof (EXTR)); 1644 psym->ecoff_sym.asym.value = value; 1645 psym->ecoff_sym.asym.st = (unsigned) type; 1646 psym->ecoff_sym.asym.sc = (unsigned) storage; 1647 psym->ecoff_sym.asym.index = indx; 1648 1649 /* If there is an associated symbol, we wait until the end of the 1650 assembly before deciding where to put the name (it may be just an 1651 external symbol). Otherwise, this is just a debugging symbol and 1652 the name should go with the current file. */ 1653 if (sym_value == (symbolS *) NULL) 1654 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL) 1655 ? 0 1656 : add_string (&cur_file_ptr->strings, 1657 cur_file_ptr->str_hash, 1658 str, 1659 &hash_ptr)); 1660 1661 ++vp->num_allocated; 1662 1663 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym)) 1664 return psym; 1665 1666 /* Save the symbol within the hash table if this is a static 1667 item, and it has a name. */ 1668 if (hash_ptr != (shash_t *) NULL 1669 && (type == st_Global || type == st_Static || type == st_Label 1670 || type == st_Proc || type == st_StaticProc)) 1671 hash_ptr->sym_ptr = psym; 1672 1673 /* push or pop a scope if appropriate. */ 1674 switch (type) 1675 { 1676 default: 1677 break; 1678 1679 case st_File: /* beginning of file */ 1680 case st_Proc: /* procedure */ 1681 case st_StaticProc: /* static procedure */ 1682 case st_Block: /* begin scope */ 1683 pscope = allocate_scope (); 1684 pscope->prev = cur_file_ptr->cur_scope; 1685 pscope->lsym = psym; 1686 pscope->type = type; 1687 cur_file_ptr->cur_scope = pscope; 1688 1689 if (type != st_File) 1690 scope_delta = 1; 1691 1692 /* For every block type except file, struct, union, or 1693 enumeration blocks, push a level on the tag stack. We omit 1694 file types, so that tags can span file boundaries. */ 1695 if (type != st_File && storage != sc_Info) 1696 { 1697 ptag_head = allocate_thead (); 1698 ptag_head->first_tag = 0; 1699 ptag_head->prev = cur_tag_head; 1700 cur_tag_head = ptag_head; 1701 } 1702 break; 1703 1704 case st_End: 1705 pscope = cur_file_ptr->cur_scope; 1706 if (pscope == (scope_t *) NULL) 1707 as_fatal (_("too many st_End's")); 1708 else 1709 { 1710 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st; 1711 1712 psym->begin_ptr = pscope->lsym; 1713 1714 if (begin_type != st_File) 1715 scope_delta = -1; 1716 1717 /* Except for file, structure, union, or enumeration end 1718 blocks remove all tags created within this scope. */ 1719 if (begin_type != st_File && storage != sc_Info) 1720 { 1721 ptag_head = cur_tag_head; 1722 cur_tag_head = ptag_head->prev; 1723 1724 for (ptag = ptag_head->first_tag; 1725 ptag != (tag_t *) NULL; 1726 ptag = ptag_next) 1727 { 1728 if (ptag->forward_ref != (forward_t *) NULL) 1729 add_unknown_tag (ptag); 1730 1731 ptag_next = ptag->same_block; 1732 ptag->hash_ptr->tag_ptr = ptag->same_name; 1733 free_tag (ptag); 1734 } 1735 1736 free_thead (ptag_head); 1737 } 1738 1739 cur_file_ptr->cur_scope = pscope->prev; 1740 1741 /* block begin gets next sym #. This is set when we know 1742 the symbol index value. */ 1743 1744 /* Functions push two or more aux words as follows: 1745 1st word: index+1 of the end symbol (filled in later). 1746 2nd word: type of the function (plus any aux words needed). 1747 Also, tie the external pointer back to the function begin symbol. */ 1748 if (begin_type != st_File && begin_type != st_Block) 1749 { 1750 symint_t ty; 1751 varray_t *svp = &cur_file_ptr->aux_syms; 1752 1753 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0); 1754 pscope->lsym->index_ptr = 1755 &svp->last->datum->aux[svp->objects_last_page - 1]; 1756 ty = add_aux_sym_tir (&last_func_type_info, 1757 hash_no, 1758 &cur_file_ptr->thash_head[0]); 1759 (void) ty; 1760 /* This seems to be unnecessary. I'm not even sure what it is 1761 * intended to do. It's from mips-tfile. 1762 * if (last_func_sym_value != (symbolS *) NULL) 1763 * { 1764 * last_func_sym_value->ifd = cur_file_ptr->file_index; 1765 * last_func_sym_value->index = ty; 1766 * } 1767 */ 1768 } 1769 1770 free_scope (pscope); 1771 } 1772 } 1773 1774 cur_file_ptr->nested_scopes += scope_delta; 1775 1776 #ifdef ECOFF_DEBUG 1777 if (debug && type != st_File 1778 && (debug > 2 || type == st_Block || type == st_End 1779 || type == st_Proc || type == st_StaticProc)) 1780 { 1781 char *sc_str = sc_to_string (storage); 1782 char *st_str = st_to_string (type); 1783 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0); 1784 1785 fprintf (stderr, 1786 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s", 1787 value, depth, sc_str); 1788 1789 if (str_start && str_end_p1 - str_start > 0) 1790 fprintf (stderr, " st= %-11s name= %.*s\n", 1791 st_str, str_end_p1 - str_start, str_start); 1792 else 1793 { 1794 unsigned long len = strlen (st_str); 1795 fprintf (stderr, " st= %.*s\n", len - 1, st_str); 1796 } 1797 } 1798 #endif 1799 1800 return psym; 1801 } 1802 1803 /* Add an auxiliary symbol (passing a symint). This is actually used 1805 for integral aux types, not just symints. */ 1806 1807 static symint_t 1808 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */) 1809 { 1810 varray_t *vp; 1811 aux_t *aux_ptr; 1812 1813 if (cur_file_ptr == (efdr_t *) NULL) 1814 as_fatal (_("no current file pointer")); 1815 1816 vp = &cur_file_ptr->aux_syms; 1817 1818 if (vp->objects_last_page == vp->objects_per_page) 1819 add_varray_page (vp); 1820 1821 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1822 aux_ptr->type = aux_isym; 1823 aux_ptr->data.isym = aux_word; 1824 1825 return vp->num_allocated++; 1826 } 1827 1828 /* Add an auxiliary symbol (passing a file/symbol index combo). */ 1829 1830 static symint_t 1831 add_aux_sym_rndx (int file_index, symint_t sym_index) 1832 { 1833 varray_t *vp; 1834 aux_t *aux_ptr; 1835 1836 if (cur_file_ptr == (efdr_t *) NULL) 1837 as_fatal (_("no current file pointer")); 1838 1839 vp = &cur_file_ptr->aux_syms; 1840 1841 if (vp->objects_last_page == vp->objects_per_page) 1842 add_varray_page (vp); 1843 1844 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1845 aux_ptr->type = aux_rndx; 1846 aux_ptr->data.rndx.rfd = file_index; 1847 aux_ptr->data.rndx.index = sym_index; 1848 1849 return vp->num_allocated++; 1850 } 1851 1852 /* Add an auxiliary symbol (passing the basic type and possibly 1854 type qualifiers). */ 1855 1856 static symint_t 1857 add_aux_sym_tir (type_info_t *t, /* current type information */ 1858 hash_state_t state, /* whether to hash type or not */ 1859 thash_t **hash_tbl /* pointer to hash table to use */) 1860 { 1861 varray_t *vp; 1862 aux_t *aux_ptr; 1863 static AUXU init_aux; 1864 symint_t ret; 1865 int i; 1866 AUXU aux; 1867 1868 if (cur_file_ptr == (efdr_t *) NULL) 1869 as_fatal (_("no current file pointer")); 1870 1871 vp = &cur_file_ptr->aux_syms; 1872 1873 aux = init_aux; 1874 aux.ti.bt = (int) t->basic_type; 1875 aux.ti.continued = 0; 1876 aux.ti.fBitfield = t->bitfield; 1877 1878 aux.ti.tq0 = (int) t->type_qualifiers[0]; 1879 aux.ti.tq1 = (int) t->type_qualifiers[1]; 1880 aux.ti.tq2 = (int) t->type_qualifiers[2]; 1881 aux.ti.tq3 = (int) t->type_qualifiers[3]; 1882 aux.ti.tq4 = (int) t->type_qualifiers[4]; 1883 aux.ti.tq5 = (int) t->type_qualifiers[5]; 1884 1885 /* For anything that adds additional information, we must not hash, 1886 so check here, and reset our state. */ 1887 1888 if (state != hash_no 1889 && (t->type_qualifiers[0] == tq_Array 1890 || t->type_qualifiers[1] == tq_Array 1891 || t->type_qualifiers[2] == tq_Array 1892 || t->type_qualifiers[3] == tq_Array 1893 || t->type_qualifiers[4] == tq_Array 1894 || t->type_qualifiers[5] == tq_Array 1895 || t->basic_type == bt_Struct 1896 || t->basic_type == bt_Union 1897 || t->basic_type == bt_Enum 1898 || t->bitfield 1899 || t->num_dims > 0)) 1900 state = hash_no; 1901 1902 /* See if we can hash this type, and save some space, but some types 1903 can't be hashed (because they contain arrays or continuations), 1904 and others can be put into the hash list, but cannot use existing 1905 types because other aux entries precede this one. */ 1906 1907 if (state != hash_no) 1908 { 1909 thash_t *hash_ptr; 1910 symint_t hi; 1911 1912 hi = aux.isym & ((1 << HASHBITS) - 1); 1913 hi %= THASH_SIZE; 1914 1915 for (hash_ptr = hash_tbl[hi]; 1916 hash_ptr != (thash_t *)0; 1917 hash_ptr = hash_ptr->next) 1918 { 1919 if (aux.isym == hash_ptr->type.isym) 1920 break; 1921 } 1922 1923 if (hash_ptr != (thash_t *) NULL && state == hash_yes) 1924 return hash_ptr->indx; 1925 1926 if (hash_ptr == (thash_t *) NULL) 1927 { 1928 hash_ptr = allocate_thash (); 1929 hash_ptr->next = hash_tbl[hi]; 1930 hash_ptr->type = aux; 1931 hash_ptr->indx = vp->num_allocated; 1932 hash_tbl[hi] = hash_ptr; 1933 } 1934 } 1935 1936 /* Everything is set up, add the aux symbol. */ 1937 if (vp->objects_last_page == vp->objects_per_page) 1938 add_varray_page (vp); 1939 1940 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1941 aux_ptr->type = aux_tir; 1942 aux_ptr->data = aux; 1943 1944 ret = vp->num_allocated++; 1945 1946 /* Add bitfield length if it exists. 1947 1948 NOTE: Mips documentation claims bitfield goes at the end of the 1949 AUX record, but the DECstation compiler emits it here. 1950 (This would only make a difference for enum bitfields.) 1951 1952 Also note: We use the last size given since gcc may emit 2 1953 for an enum bitfield. */ 1954 1955 if (t->bitfield) 1956 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]); 1957 1958 /* Add tag information if needed. Structure, union, and enum 1959 references add 2 aux symbols: a [file index, symbol index] 1960 pointer to the structure type, and the current file index. */ 1961 1962 if (t->basic_type == bt_Struct 1963 || t->basic_type == bt_Union 1964 || t->basic_type == bt_Enum) 1965 { 1966 symint_t file_index = t->tag_ptr->ifd; 1967 localsym_t *sym = t->tag_ptr->sym; 1968 forward_t *forward_ref = allocate_forward (); 1969 1970 if (sym != (localsym_t *) NULL) 1971 { 1972 forward_ref->next = sym->forward_ref; 1973 sym->forward_ref = forward_ref; 1974 } 1975 else 1976 { 1977 forward_ref->next = t->tag_ptr->forward_ref; 1978 t->tag_ptr->forward_ref = forward_ref; 1979 } 1980 1981 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil); 1982 forward_ref->index_ptr 1983 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1984 1985 (void) add_aux_sym_symint (file_index); 1986 forward_ref->ifd_ptr 1987 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1988 } 1989 1990 /* Add information about array bounds if they exist. */ 1991 for (i = 0; i < t->num_dims; i++) 1992 { 1993 (void) add_aux_sym_rndx (ST_RFDESCAPE, 1994 cur_file_ptr->int_type); 1995 1996 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/ 1997 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */ 1998 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/ 1999 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */ 2000 ? 0 2001 : (t->sizes[i] * 8) / t->dimensions[i]); 2002 }; 2003 2004 /* NOTE: Mips documentation claims that the bitfield width goes here. 2005 But it needs to be emitted earlier. */ 2006 2007 return ret; 2008 } 2009 2010 /* Add a tag to the tag table (unless it already exists). */ 2012 2013 static tag_t * 2014 get_tag (const char *tag, /* tag name */ 2015 localsym_t *sym, /* tag start block */ 2016 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */) 2017 { 2018 shash_t *hash_ptr; 2019 tag_t *tag_ptr; 2020 2021 if (cur_file_ptr == (efdr_t *) NULL) 2022 as_fatal (_("no current file pointer")); 2023 2024 hash_ptr = (shash_t *) str_hash_find (tag_hash, tag); 2025 2026 if (hash_ptr != (shash_t *) NULL 2027 && hash_ptr->tag_ptr != (tag_t *) NULL) 2028 { 2029 tag_ptr = hash_ptr->tag_ptr; 2030 if (sym != (localsym_t *) NULL) 2031 { 2032 tag_ptr->basic_type = basic_type; 2033 tag_ptr->ifd = cur_file_ptr->file_index; 2034 tag_ptr->sym = sym; 2035 } 2036 return tag_ptr; 2037 } 2038 2039 if (hash_ptr == (shash_t *) NULL) 2040 { 2041 char *perm; 2042 2043 perm = xstrdup (tag); 2044 hash_ptr = allocate_shash (); 2045 str_hash_insert (tag_hash, perm, hash_ptr, 0); 2046 hash_ptr->string = perm; 2047 } 2048 2049 tag_ptr = allocate_tag (); 2050 tag_ptr->forward_ref = (forward_t *) NULL; 2051 tag_ptr->hash_ptr = hash_ptr; 2052 tag_ptr->same_name = hash_ptr->tag_ptr; 2053 tag_ptr->basic_type = basic_type; 2054 tag_ptr->sym = sym; 2055 tag_ptr->ifd = ((sym == (localsym_t *) NULL) 2056 ? (symint_t) -1 2057 : cur_file_ptr->file_index); 2058 tag_ptr->same_block = cur_tag_head->first_tag; 2059 2060 cur_tag_head->first_tag = tag_ptr; 2061 hash_ptr->tag_ptr = tag_ptr; 2062 2063 return tag_ptr; 2064 } 2065 2066 /* Add an unknown {struct, union, enum} tag. */ 2068 2069 static void 2070 add_unknown_tag (tag_t *ptag /* pointer to tag information */) 2071 { 2072 shash_t *hash_ptr = ptag->hash_ptr; 2073 char *name = hash_ptr->string; 2074 localsym_t *sym; 2075 forward_t **pf; 2076 2077 #ifdef ECOFF_DEBUG 2078 if (debug > 1) 2079 { 2080 char *agg_type = "{unknown aggregate type}"; 2081 switch (ptag->basic_type) 2082 { 2083 case bt_Struct: agg_type = "struct"; break; 2084 case bt_Union: agg_type = "union"; break; 2085 case bt_Enum: agg_type = "enum"; break; 2086 default: break; 2087 } 2088 2089 fprintf (stderr, "unknown %s %.*s found\n", agg_type, 2090 hash_ptr->len, name_start); 2091 } 2092 #endif 2093 2094 sym = add_ecoff_symbol (name, 2095 st_Block, 2096 sc_Info, 2097 (symbolS *) NULL, 2098 (bfd_vma) 0, 2099 (symint_t) 0, 2100 (symint_t) 0); 2101 2102 (void) add_ecoff_symbol (name, 2103 st_End, 2104 sc_Info, 2105 (symbolS *) NULL, 2106 (bfd_vma) 0, 2107 (symint_t) 0, 2108 (symint_t) 0); 2109 2110 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) 2111 ; 2112 *pf = ptag->forward_ref; 2113 } 2114 2115 /* Add a procedure to the current file's list of procedures, and record 2117 this is the current procedure. If AENT, then only set the requested 2118 symbol's function type. */ 2119 2120 static void 2121 add_procedure (char *func /* func name */, int aent) 2122 { 2123 varray_t *vp; 2124 proc_t *new_proc_ptr; 2125 symbolS *sym; 2126 2127 #ifdef ECOFF_DEBUG 2128 if (debug) 2129 fputc ('\n', stderr); 2130 #endif 2131 2132 /* Set the BSF_FUNCTION flag for the symbol. */ 2133 sym = symbol_find_or_make (func); 2134 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; 2135 2136 if (aent) 2137 return; 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 /* Push the start of the function. */ 2160 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text, 2161 sym, (bfd_vma) 0, (symint_t) 0, 2162 (symint_t) 0); 2163 2164 ++proc_cnt; 2165 2166 /* Fill in the linenos preceding the .ent, if any. */ 2167 if (noproc_lineno != (lineno_list_t *) NULL) 2168 { 2169 lineno_list_t *l; 2170 2171 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next) 2172 l->proc = new_proc_ptr; 2173 *last_lineno_ptr = noproc_lineno; 2174 while (*last_lineno_ptr != NULL) 2175 { 2176 last_lineno = *last_lineno_ptr; 2177 last_lineno_ptr = &last_lineno->next; 2178 } 2179 noproc_lineno = (lineno_list_t *) NULL; 2180 } 2181 } 2182 2183 symbolS * 2184 ecoff_get_cur_proc_sym (void) 2185 { 2186 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL); 2187 } 2188 2189 /* Add a new filename, and set up all of the file relative 2191 virtual arrays (strings, symbols, aux syms, etc.). Record 2192 where the current file structure lives. */ 2193 2194 static void 2195 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake) 2196 { 2197 int first_ch; 2198 efdr_t *fil_ptr; 2199 2200 #ifdef ECOFF_DEBUG 2201 if (debug) 2202 fprintf (stderr, "\tfile\t%.*s\n", len, file_start); 2203 #endif 2204 2205 /* If the file name is NULL, then no .file symbol appeared, and we 2206 want to use the actual file name. */ 2207 if (file_name == (const char *) NULL) 2208 { 2209 if (first_file != (efdr_t *) NULL) 2210 as_fatal (_("fake .file after real one")); 2211 file_name = as_where ((unsigned int *) NULL); 2212 2213 /* Automatically generate ECOFF debugging information, since I 2214 think that's what other ECOFF assemblers do. We don't do 2215 this if we see a .file directive with a string, since that 2216 implies that some sort of debugging information is being 2217 provided. */ 2218 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED) 2219 debug_type = DEBUG_ECOFF; 2220 } 2221 else if (debug_type == DEBUG_UNSPECIFIED) 2222 debug_type = DEBUG_NONE; 2223 2224 #ifndef NO_LISTING 2225 if (listing) 2226 listing_source_file (file_name); 2227 #endif 2228 2229 current_stabs_filename = file_name; 2230 2231 /* If we're creating stabs, then we don't actually make a new FDR. 2232 Instead, we just create a stabs symbol. */ 2233 if (stabs_seen) 2234 { 2235 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil, 2236 symbol_new (FAKE_LABEL_NAME, now_seg, 2237 frag_now, frag_now_fix ()), 2238 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL)); 2239 return; 2240 } 2241 2242 first_ch = *file_name; 2243 2244 /* FIXME: We can't safely merge files which have line number 2245 information (fMerge will be zero in this case). Otherwise, we 2246 get incorrect line number debugging info. See for instance 2247 ecoff_build_lineno, which will end up setting all file->fdr.* 2248 fields multiple times, resulting in incorrect debug info. In 2249 order to make this work right, all line number and symbol info 2250 for the same source file has to be adjacent in the object file, 2251 so that a single file descriptor can be used to point to them. 2252 This would require maintaining file specific lists of line 2253 numbers and symbols for each file, so that they can be merged 2254 together (or output together) when two .file pseudo-ops are 2255 merged into one file descriptor. */ 2256 2257 /* See if the file has already been created. */ 2258 for (fil_ptr = first_file; 2259 fil_ptr != (efdr_t *) NULL; 2260 fil_ptr = fil_ptr->next_file) 2261 { 2262 if (first_ch == fil_ptr->name[0] 2263 && filename_cmp (file_name, fil_ptr->name) == 0 2264 && fil_ptr->fdr.fMerge) 2265 { 2266 cur_file_ptr = fil_ptr; 2267 if (! fake) 2268 cur_file_ptr->fake = 0; 2269 break; 2270 } 2271 } 2272 2273 /* If this is a new file, create it. */ 2274 if (fil_ptr == (efdr_t *) NULL) 2275 { 2276 if (file_desc.objects_last_page == file_desc.objects_per_page) 2277 add_varray_page (&file_desc); 2278 2279 fil_ptr = cur_file_ptr = 2280 &file_desc.last->datum->file[file_desc.objects_last_page++]; 2281 *fil_ptr = init_file; 2282 2283 fil_ptr->file_index = current_file_idx++; 2284 ++file_desc.num_allocated; 2285 2286 fil_ptr->fake = fake; 2287 2288 /* Allocate the string hash table. */ 2289 fil_ptr->str_hash = str_htab_create (); 2290 2291 /* Make sure 0 byte in string table is null */ 2292 add_string (&fil_ptr->strings, 2293 fil_ptr->str_hash, 2294 "", 2295 (shash_t **)0); 2296 2297 if (strlen (file_name) > PAGE_USIZE - 2) 2298 as_fatal (_("filename goes over one page boundary")); 2299 2300 /* Push the start of the filename. We assume that the filename 2301 will be stored at string offset 1. */ 2302 (void) add_ecoff_symbol (file_name, st_File, sc_Text, 2303 (symbolS *) NULL, (bfd_vma) 0, 2304 (symint_t) 0, (symint_t) 0); 2305 fil_ptr->fdr.rss = 1; 2306 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1]; 2307 2308 /* Update the linked list of file descriptors. */ 2309 *last_file_ptr = fil_ptr; 2310 last_file_ptr = &fil_ptr->next_file; 2311 2312 /* Add void & int types to the file (void should be first to catch 2313 errant 0's within the index fields). */ 2314 fil_ptr->void_type = add_aux_sym_tir (&void_type_info, 2315 hash_yes, 2316 &cur_file_ptr->thash_head[0]); 2317 2318 fil_ptr->int_type = add_aux_sym_tir (&int_type_info, 2319 hash_yes, 2320 &cur_file_ptr->thash_head[0]); 2321 } 2322 } 2323 2324 /* This function is called when the assembler notices a preprocessor 2325 directive switching to a new file. This will not happen in 2326 compiler output, only in hand coded assembler. */ 2327 2328 void 2329 ecoff_new_file (const char *name) 2330 { 2331 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0) 2332 return; 2333 add_file (name, 0, 0); 2334 2335 /* This is a hand coded assembler file, so automatically turn on 2336 debugging information. */ 2337 if (debug_type == DEBUG_UNSPECIFIED) 2338 debug_type = DEBUG_ECOFF; 2339 } 2340 2341 #ifdef ECOFF_DEBUG 2343 2344 /* Convert storage class to string. */ 2345 2346 static char * 2347 sc_to_string (storage_class) 2348 sc_t storage_class; 2349 { 2350 switch (storage_class) 2351 { 2352 case sc_Nil: return "Nil,"; 2353 case sc_Text: return "Text,"; 2354 case sc_Data: return "Data,"; 2355 case sc_Bss: return "Bss,"; 2356 case sc_Register: return "Register,"; 2357 case sc_Abs: return "Abs,"; 2358 case sc_Undefined: return "Undefined,"; 2359 case sc_CdbLocal: return "CdbLocal,"; 2360 case sc_Bits: return "Bits,"; 2361 case sc_CdbSystem: return "CdbSystem,"; 2362 case sc_RegImage: return "RegImage,"; 2363 case sc_Info: return "Info,"; 2364 case sc_UserStruct: return "UserStruct,"; 2365 case sc_SData: return "SData,"; 2366 case sc_SBss: return "SBss,"; 2367 case sc_RData: return "RData,"; 2368 case sc_Var: return "Var,"; 2369 case sc_Common: return "Common,"; 2370 case sc_SCommon: return "SCommon,"; 2371 case sc_VarRegister: return "VarRegister,"; 2372 case sc_Variant: return "Variant,"; 2373 case sc_SUndefined: return "SUndefined,"; 2374 case sc_Init: return "Init,"; 2375 case sc_Max: return "Max,"; 2376 } 2377 2378 return "???,"; 2379 } 2380 2381 #endif /* DEBUG */ 2382 2383 #ifdef ECOFF_DEBUG 2385 2386 /* Convert symbol type to string. */ 2387 2388 static char * 2389 st_to_string (symbol_type) 2390 st_t symbol_type; 2391 { 2392 switch (symbol_type) 2393 { 2394 case st_Nil: return "Nil,"; 2395 case st_Global: return "Global,"; 2396 case st_Static: return "Static,"; 2397 case st_Param: return "Param,"; 2398 case st_Local: return "Local,"; 2399 case st_Label: return "Label,"; 2400 case st_Proc: return "Proc,"; 2401 case st_Block: return "Block,"; 2402 case st_End: return "End,"; 2403 case st_Member: return "Member,"; 2404 case st_Typedef: return "Typedef,"; 2405 case st_File: return "File,"; 2406 case st_RegReloc: return "RegReloc,"; 2407 case st_Forward: return "Forward,"; 2408 case st_StaticProc: return "StaticProc,"; 2409 case st_Constant: return "Constant,"; 2410 case st_Str: return "String,"; 2411 case st_Number: return "Number,"; 2412 case st_Expr: return "Expr,"; 2413 case st_Type: return "Type,"; 2414 case st_Max: return "Max,"; 2415 } 2416 2417 return "???,"; 2418 } 2419 2420 #endif /* DEBUG */ 2421 2422 /* Parse .begin directives which have a label as the first argument 2424 which gives the location of the start of the block. */ 2425 2426 void 2427 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED) 2428 { 2429 char *name; 2430 char name_end; 2431 2432 if (cur_file_ptr == (efdr_t *) NULL) 2433 { 2434 as_warn (_(".begin directive without a preceding .file directive")); 2435 demand_empty_rest_of_line (); 2436 return; 2437 } 2438 2439 if (cur_proc_ptr == (proc_t *) NULL) 2440 { 2441 as_warn (_(".begin directive without a preceding .ent directive")); 2442 demand_empty_rest_of_line (); 2443 return; 2444 } 2445 2446 name_end = get_symbol_name (&name); 2447 2448 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text, 2449 symbol_find_or_make (name), 2450 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2451 2452 (void) restore_line_pointer (name_end); 2453 2454 /* The line number follows, but we don't use it. */ 2455 (void) get_absolute_expression (); 2456 demand_empty_rest_of_line (); 2457 } 2458 2459 /* Parse .bend directives which have a label as the first argument 2461 which gives the location of the end of the block. */ 2462 2463 void 2464 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED) 2465 { 2466 char *name; 2467 char name_end; 2468 symbolS *endsym; 2469 2470 if (cur_file_ptr == (efdr_t *) NULL) 2471 { 2472 as_warn (_(".bend directive without a preceding .file directive")); 2473 demand_empty_rest_of_line (); 2474 return; 2475 } 2476 2477 if (cur_proc_ptr == (proc_t *) NULL) 2478 { 2479 as_warn (_(".bend directive without a preceding .ent directive")); 2480 demand_empty_rest_of_line (); 2481 return; 2482 } 2483 2484 name_end = get_symbol_name (&name); 2485 2486 /* The value is the distance between the .bend directive and the 2487 corresponding symbol. We fill in the offset when we write out 2488 the symbol. */ 2489 endsym = symbol_find (name); 2490 if (endsym == (symbolS *) NULL) 2491 as_warn (_(".bend directive names unknown symbol")); 2492 else 2493 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym, 2494 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2495 2496 restore_line_pointer (name_end); 2497 2498 /* The line number follows, but we don't use it. */ 2499 (void) get_absolute_expression (); 2500 demand_empty_rest_of_line (); 2501 } 2502 2503 /* COFF debugging information is provided as a series of directives 2505 (.def, .scl, etc.). We build up information as we read the 2506 directives in the following static variables, and file it away when 2507 we reach the .endef directive. */ 2508 static char *coff_sym_name; 2509 static type_info_t coff_type; 2510 static sc_t coff_storage_class; 2511 static st_t coff_symbol_typ; 2512 static int coff_is_function; 2513 static char *coff_tag; 2514 static valueT coff_value; 2515 static symbolS *coff_sym_value; 2516 static bfd_vma coff_sym_addend; 2517 static int coff_inside_enumeration; 2518 2519 /* Handle a .def directive: start defining a symbol. */ 2520 2521 void 2522 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED) 2523 { 2524 char *name; 2525 char name_end; 2526 2527 ecoff_debugging_seen = 1; 2528 2529 SKIP_WHITESPACE (); 2530 2531 name_end = get_symbol_name (&name); 2532 2533 if (coff_sym_name != (char *) NULL) 2534 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored")); 2535 else if (*name == '\0') 2536 as_warn (_("empty symbol name in .def; ignored")); 2537 else 2538 { 2539 free (coff_sym_name); 2540 free (coff_tag); 2541 2542 coff_sym_name = xstrdup (name); 2543 coff_type = type_info_init; 2544 coff_storage_class = sc_Nil; 2545 coff_symbol_typ = st_Nil; 2546 coff_is_function = 0; 2547 coff_tag = (char *) NULL; 2548 coff_value = 0; 2549 coff_sym_value = (symbolS *) NULL; 2550 coff_sym_addend = 0; 2551 } 2552 2553 restore_line_pointer (name_end); 2554 2555 demand_empty_rest_of_line (); 2556 } 2557 2558 /* Handle a .dim directive, used to give dimensions for an array. The 2559 arguments are comma separated numbers. mips-tfile assumes that 2560 there will not be more than 6 dimensions, and gdb won't read any 2561 more than that anyhow, so I will also make that assumption. */ 2562 2563 void 2564 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED) 2565 { 2566 int dimens[N_TQ]; 2567 int i; 2568 2569 if (coff_sym_name == (char *) NULL) 2570 { 2571 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored")); 2572 demand_empty_rest_of_line (); 2573 return; 2574 } 2575 2576 for (i = 0; i < N_TQ; i++) 2577 { 2578 SKIP_WHITESPACE (); 2579 dimens[i] = get_absolute_expression (); 2580 if (*input_line_pointer == ',') 2581 ++input_line_pointer; 2582 else 2583 { 2584 if (*input_line_pointer != '\n' 2585 && *input_line_pointer != ';') 2586 as_warn (_("badly formed .dim directive")); 2587 break; 2588 } 2589 } 2590 2591 if (i == N_TQ) 2592 --i; 2593 2594 /* The dimensions are stored away in reverse order. */ 2595 for (; i >= 0; i--) 2596 { 2597 if (coff_type.num_dims >= N_TQ) 2598 { 2599 as_warn (_("too many .dim entries")); 2600 break; 2601 } 2602 coff_type.dimensions[coff_type.num_dims] = dimens[i]; 2603 ++coff_type.num_dims; 2604 } 2605 2606 demand_empty_rest_of_line (); 2607 } 2608 2609 /* Handle a .scl directive, which sets the COFF storage class of the 2610 symbol. */ 2611 2612 void 2613 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED) 2614 { 2615 long val; 2616 2617 if (coff_sym_name == (char *) NULL) 2618 { 2619 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored")); 2620 demand_empty_rest_of_line (); 2621 return; 2622 } 2623 2624 val = get_absolute_expression (); 2625 2626 coff_symbol_typ = map_coff_sym_type[val]; 2627 coff_storage_class = map_coff_storage[val]; 2628 2629 demand_empty_rest_of_line (); 2630 } 2631 2632 /* Handle a .size directive. For some reason mips-tfile.c thinks that 2633 .size can have multiple arguments. We humor it, although gcc will 2634 never generate more than one argument. */ 2635 2636 void 2637 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED) 2638 { 2639 int sizes[N_TQ]; 2640 int i; 2641 2642 if (coff_sym_name == (char *) NULL) 2643 { 2644 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored")); 2645 demand_empty_rest_of_line (); 2646 return; 2647 } 2648 2649 for (i = 0; i < N_TQ; i++) 2650 { 2651 SKIP_WHITESPACE (); 2652 sizes[i] = get_absolute_expression (); 2653 if (*input_line_pointer == ',') 2654 ++input_line_pointer; 2655 else 2656 { 2657 if (*input_line_pointer != '\n' 2658 && *input_line_pointer != ';') 2659 as_warn (_("badly formed .size directive")); 2660 break; 2661 } 2662 } 2663 2664 if (i == N_TQ) 2665 --i; 2666 2667 /* The sizes are stored away in reverse order. */ 2668 for (; i >= 0; i--) 2669 { 2670 if (coff_type.num_sizes >= N_TQ) 2671 { 2672 as_warn (_("too many .size entries")); 2673 break; 2674 } 2675 coff_type.sizes[coff_type.num_sizes] = sizes[i]; 2676 ++coff_type.num_sizes; 2677 } 2678 2679 demand_empty_rest_of_line (); 2680 } 2681 2682 /* Handle the .type directive, which gives the COFF type of the 2683 symbol. */ 2684 2685 void 2686 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED) 2687 { 2688 long val; 2689 tq_t *tq_ptr; 2690 tq_t *tq_shft; 2691 2692 if (coff_sym_name == (char *) NULL) 2693 { 2694 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored")); 2695 demand_empty_rest_of_line (); 2696 return; 2697 } 2698 2699 val = get_absolute_expression (); 2700 2701 coff_type.orig_type = BTYPE (val); 2702 coff_type.basic_type = map_coff_types[coff_type.orig_type]; 2703 2704 tq_ptr = &coff_type.type_qualifiers[N_TQ]; 2705 while (val & ~N_BTMASK) 2706 { 2707 if (tq_ptr == &coff_type.type_qualifiers[0]) 2708 { 2709 /* FIXME: We could handle this by setting the continued bit. 2710 There would still be a limit: the .type argument can not 2711 be infinite. */ 2712 as_warn (_("the type of %s is too complex; it will be simplified"), 2713 coff_sym_name); 2714 break; 2715 } 2716 if (ISPTR (val)) 2717 *--tq_ptr = tq_Ptr; 2718 else if (ISFCN (val)) 2719 *--tq_ptr = tq_Proc; 2720 else if (ISARY (val)) 2721 *--tq_ptr = tq_Array; 2722 else 2723 as_fatal (_("Unrecognized .type argument")); 2724 2725 val = DECREF (val); 2726 } 2727 2728 tq_shft = &coff_type.type_qualifiers[0]; 2729 while (tq_ptr != &coff_type.type_qualifiers[N_TQ]) 2730 *tq_shft++ = *tq_ptr++; 2731 2732 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc) 2733 { 2734 /* If this is a function, ignore it, so that we don't get two 2735 entries (one from the .ent, and one for the .def that 2736 precedes it). Save the type information so that the end 2737 block can properly add it after the begin block index. For 2738 MIPS knows what reason, we must strip off the function type 2739 at this point. */ 2740 coff_is_function = 1; 2741 tq_shft[-1] = tq_Nil; 2742 } 2743 2744 while (tq_shft != &coff_type.type_qualifiers[N_TQ]) 2745 *tq_shft++ = tq_Nil; 2746 2747 demand_empty_rest_of_line (); 2748 } 2749 2750 /* Handle the .tag directive, which gives the name of a structure, 2751 union or enum. */ 2752 2753 void 2754 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED) 2755 { 2756 char *name; 2757 char name_end; 2758 2759 if (coff_sym_name == (char *) NULL) 2760 { 2761 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored")); 2762 demand_empty_rest_of_line (); 2763 return; 2764 } 2765 2766 name_end = get_symbol_name (&name); 2767 2768 coff_tag = xstrdup (name); 2769 2770 (void) restore_line_pointer (name_end); 2771 2772 demand_empty_rest_of_line (); 2773 } 2774 2775 /* Handle the .val directive, which gives the value of the symbol. It 2776 may be the name of a static or global symbol. */ 2777 2778 void 2779 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED) 2780 { 2781 expressionS exp; 2782 2783 if (coff_sym_name == (char *) NULL) 2784 { 2785 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored")); 2786 demand_empty_rest_of_line (); 2787 return; 2788 } 2789 2790 expression (&exp); 2791 if (exp.X_op != O_constant && exp.X_op != O_symbol) 2792 { 2793 as_bad (_(".val expression is too complex")); 2794 demand_empty_rest_of_line (); 2795 return; 2796 } 2797 2798 if (exp.X_op == O_constant) 2799 coff_value = exp.X_add_number; 2800 else 2801 { 2802 coff_sym_value = exp.X_add_symbol; 2803 coff_sym_addend = exp.X_add_number; 2804 } 2805 2806 demand_empty_rest_of_line (); 2807 } 2808 2809 /* Handle the .endef directive, which terminates processing of COFF 2810 debugging information for a symbol. */ 2811 2812 void 2813 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED) 2814 { 2815 char *name; 2816 symint_t indx; 2817 localsym_t *sym; 2818 2819 demand_empty_rest_of_line (); 2820 2821 if (coff_sym_name == (char *) NULL) 2822 { 2823 as_warn (_(".endef pseudo-op used before .def; ignored")); 2824 return; 2825 } 2826 2827 name = coff_sym_name; 2828 coff_sym_name = (char *) NULL; 2829 2830 /* If the symbol is a static or external, we have already gotten the 2831 appropriate type and class, so make sure we don't override those 2832 values. This is needed because there are some type and classes 2833 that are not in COFF, such as short data, etc. */ 2834 if (coff_sym_value != (symbolS *) NULL) 2835 { 2836 coff_symbol_typ = st_Nil; 2837 coff_storage_class = sc_Nil; 2838 } 2839 2840 coff_type.extra_sizes = coff_tag != (char *) NULL; 2841 if (coff_type.num_dims > 0) 2842 { 2843 int diff = coff_type.num_dims - coff_type.num_sizes; 2844 int i = coff_type.num_dims - 1; 2845 int j; 2846 2847 if (coff_type.num_sizes != 1 || diff < 0) 2848 { 2849 as_warn (_("bad COFF debugging information")); 2850 return; 2851 } 2852 2853 /* If this is an array, make sure the same number of dimensions 2854 and sizes were passed, creating extra sizes for multiply 2855 dimensioned arrays if not passed. */ 2856 coff_type.extra_sizes = 0; 2857 if (diff) 2858 { 2859 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1; 2860 while (j >= 0) 2861 { 2862 coff_type.sizes[j] = (((j - diff) >= 0) 2863 ? coff_type.sizes[j - diff] 2864 : 0); 2865 j--; 2866 } 2867 2868 coff_type.num_sizes = i + 1; 2869 for (i--; i >= 0; i--) 2870 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0 2871 ? 0 2872 : (coff_type.sizes[i + 1] 2873 / coff_type.dimensions[i + 1])); 2874 } 2875 } 2876 else if (coff_symbol_typ == st_Member 2877 && coff_type.num_sizes - coff_type.extra_sizes == 1) 2878 { 2879 /* Is this a bitfield? This is indicated by a structure member 2880 having a size field that isn't an array. */ 2881 coff_type.bitfield = 1; 2882 } 2883 2884 /* Except for enumeration members & begin/ending of scopes, put the 2885 type word in the aux. symbol table. */ 2886 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End) 2887 indx = 0; 2888 else if (coff_inside_enumeration) 2889 indx = cur_file_ptr->void_type; 2890 else 2891 { 2892 if (coff_type.basic_type == bt_Struct 2893 || coff_type.basic_type == bt_Union 2894 || coff_type.basic_type == bt_Enum) 2895 { 2896 if (coff_tag == (char *) NULL) 2897 { 2898 as_warn (_("no tag specified for %s"), name); 2899 return; 2900 } 2901 2902 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL, 2903 coff_type.basic_type); 2904 } 2905 2906 if (coff_is_function) 2907 { 2908 last_func_type_info = coff_type; 2909 last_func_sym_value = coff_sym_value; 2910 return; 2911 } 2912 2913 indx = add_aux_sym_tir (&coff_type, 2914 hash_yes, 2915 &cur_file_ptr->thash_head[0]); 2916 } 2917 2918 /* Do any last minute adjustments that are necessary. */ 2919 switch (coff_symbol_typ) 2920 { 2921 default: 2922 break; 2923 2924 /* For the beginning of structs, unions, and enumerations, the 2925 size info needs to be passed in the value field. */ 2926 case st_Block: 2927 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes 2928 != 1) 2929 { 2930 as_warn (_("bad COFF debugging information")); 2931 return; 2932 } 2933 else 2934 coff_value = coff_type.sizes[0]; 2935 2936 coff_inside_enumeration = (coff_type.orig_type == T_ENUM); 2937 break; 2938 2939 /* For the end of structs, unions, and enumerations, omit the 2940 name which is always ".eos". This needs to be done last, so 2941 that any error reporting above gives the correct name. */ 2942 case st_End: 2943 free (name); 2944 name = (char *) NULL; 2945 coff_value = 0; 2946 coff_inside_enumeration = 0; 2947 break; 2948 2949 /* Members of structures and unions that aren't bitfields, need 2950 to adjust the value from a byte offset to a bit offset. 2951 Members of enumerations do not have the value adjusted, and 2952 can be distinguished by indx == indexNil. For enumerations, 2953 update the maximum enumeration value. */ 2954 case st_Member: 2955 if (! coff_type.bitfield && ! coff_inside_enumeration) 2956 coff_value *= 8; 2957 2958 break; 2959 } 2960 2961 /* Add the symbol. */ 2962 sym = add_ecoff_symbol (name, 2963 coff_symbol_typ, 2964 coff_storage_class, 2965 coff_sym_value, 2966 coff_sym_addend, 2967 (symint_t) coff_value, 2968 indx); 2969 2970 /* deal with struct, union, and enum tags. */ 2971 if (coff_symbol_typ == st_Block) 2972 { 2973 /* Create or update the tag information. */ 2974 tag_t *tag_ptr = get_tag (name, 2975 sym, 2976 coff_type.basic_type); 2977 forward_t **pf; 2978 2979 /* Remember any forward references. */ 2980 for (pf = &sym->forward_ref; 2981 *pf != (forward_t *) NULL; 2982 pf = &(*pf)->next) 2983 ; 2984 *pf = tag_ptr->forward_ref; 2985 tag_ptr->forward_ref = (forward_t *) NULL; 2986 } 2987 } 2988 2989 /* Parse .end directives. */ 2991 2992 void 2993 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED) 2994 { 2995 char *name; 2996 char name_end; 2997 symbolS *ent; 2998 2999 if (cur_file_ptr == (efdr_t *) NULL) 3000 { 3001 as_warn (_(".end directive without a preceding .file directive")); 3002 demand_empty_rest_of_line (); 3003 return; 3004 } 3005 3006 if (cur_proc_ptr == (proc_t *) NULL) 3007 { 3008 as_warn (_(".end directive without a preceding .ent directive")); 3009 demand_empty_rest_of_line (); 3010 return; 3011 } 3012 3013 name_end = get_symbol_name (&name); 3014 3015 if (name == input_line_pointer) 3016 { 3017 as_warn (_(".end directive has no name")); 3018 (void) restore_line_pointer (name_end); 3019 demand_empty_rest_of_line (); 3020 return; 3021 } 3022 3023 /* The value is the distance between the .end directive and the 3024 corresponding symbol. We create a fake symbol to hold the 3025 current location, and put in the offset when we write out the 3026 symbol. */ 3027 ent = symbol_find (name); 3028 if (ent == (symbolS *) NULL) 3029 as_warn (_(".end directive names unknown symbol")); 3030 else 3031 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, 3032 symbol_new (FAKE_LABEL_NAME, now_seg, 3033 frag_now, frag_now_fix ()), 3034 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 3035 3036 #ifdef md_flush_pending_output 3037 md_flush_pending_output (); 3038 #endif 3039 3040 cur_proc_ptr = (proc_t *) NULL; 3041 3042 (void) restore_line_pointer (name_end); 3043 demand_empty_rest_of_line (); 3044 } 3045 3046 /* Parse .ent directives. */ 3048 3049 void 3050 ecoff_directive_ent (int aent) 3051 { 3052 char *name; 3053 char name_end; 3054 3055 if (cur_file_ptr == (efdr_t *) NULL) 3056 add_file ((const char *) NULL, 0, 1); 3057 3058 if (!aent && cur_proc_ptr != (proc_t *) NULL) 3059 { 3060 as_warn (_("second .ent directive found before .end directive")); 3061 demand_empty_rest_of_line (); 3062 return; 3063 } 3064 3065 name_end = get_symbol_name (&name); 3066 3067 if (name == input_line_pointer) 3068 { 3069 as_warn (_("%s directive has no name"), aent ? ".aent" : ".ent"); 3070 (void) restore_line_pointer (name_end); 3071 demand_empty_rest_of_line (); 3072 return; 3073 } 3074 3075 add_procedure (name, aent); 3076 3077 (void) restore_line_pointer (name_end); 3078 3079 /* The .ent directive is sometimes followed by a number. I'm not 3080 really sure what the number means. I don't see any way to store 3081 the information in the PDR. The Irix 4 assembler seems to ignore 3082 the information. */ 3083 SKIP_WHITESPACE (); 3084 if (*input_line_pointer == ',') 3085 { 3086 ++input_line_pointer; 3087 SKIP_WHITESPACE (); 3088 } 3089 if (ISDIGIT (*input_line_pointer) 3090 || *input_line_pointer == '-') 3091 (void) get_absolute_expression (); 3092 3093 demand_empty_rest_of_line (); 3094 } 3095 3096 /* Parse .extern directives. */ 3098 3099 void 3100 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED) 3101 { 3102 char *name; 3103 int c; 3104 symbolS *symbolp; 3105 valueT size; 3106 3107 c = get_symbol_name (&name); 3108 symbolp = symbol_find_or_make (name); 3109 (void) restore_line_pointer (c); 3110 3111 S_SET_EXTERNAL (symbolp); 3112 3113 if (*input_line_pointer == ',') 3114 ++input_line_pointer; 3115 size = get_absolute_expression (); 3116 3117 symbol_get_obj (symbolp)->ecoff_extern_size = size; 3118 } 3119 3120 /* Parse .file directives. */ 3122 3123 void 3124 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED) 3125 { 3126 int indx; 3127 char *name; 3128 int len; 3129 3130 if (cur_proc_ptr != (proc_t *) NULL) 3131 { 3132 as_warn (_("no way to handle .file within .ent/.end section")); 3133 demand_empty_rest_of_line (); 3134 return; 3135 } 3136 3137 indx = (int) get_absolute_expression (); 3138 3139 /* FIXME: we don't have to save the name here. */ 3140 name = demand_copy_C_string (&len); 3141 3142 add_file (name, indx - 1, 0); 3143 3144 demand_empty_rest_of_line (); 3145 } 3146 3147 /* Parse .fmask directives. */ 3149 3150 void 3151 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED) 3152 { 3153 long val; 3154 3155 if (cur_proc_ptr == (proc_t *) NULL) 3156 { 3157 as_warn (_(".fmask outside of .ent")); 3158 demand_empty_rest_of_line (); 3159 return; 3160 } 3161 3162 if (get_absolute_expression_and_terminator (&val) != ',') 3163 { 3164 as_warn (_("bad .fmask directive")); 3165 --input_line_pointer; 3166 demand_empty_rest_of_line (); 3167 return; 3168 } 3169 3170 cur_proc_ptr->pdr.fregmask = val; 3171 cur_proc_ptr->pdr.fregoffset = get_absolute_expression (); 3172 3173 demand_empty_rest_of_line (); 3174 } 3175 3176 /* Parse .frame directives. */ 3178 3179 void 3180 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED) 3181 { 3182 long val; 3183 3184 if (cur_proc_ptr == (proc_t *) NULL) 3185 { 3186 as_warn (_(".frame outside of .ent")); 3187 demand_empty_rest_of_line (); 3188 return; 3189 } 3190 3191 cur_proc_ptr->pdr.framereg = tc_get_register (1); 3192 3193 SKIP_WHITESPACE (); 3194 if (*input_line_pointer++ != ',' 3195 || get_absolute_expression_and_terminator (&val) != ',') 3196 { 3197 as_warn (_("bad .frame directive")); 3198 --input_line_pointer; 3199 demand_empty_rest_of_line (); 3200 return; 3201 } 3202 3203 cur_proc_ptr->pdr.frameoffset = val; 3204 3205 cur_proc_ptr->pdr.pcreg = tc_get_register (0); 3206 3207 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to 3208 Sandro. I don't yet know where this value should be stored, if 3209 anywhere. Don't call demand_empty_rest_of_line (). */ 3210 s_ignore (42); 3211 } 3212 3213 /* Parse .mask directives. */ 3215 3216 void 3217 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED) 3218 { 3219 long val; 3220 3221 if (cur_proc_ptr == (proc_t *) NULL) 3222 { 3223 as_warn (_(".mask outside of .ent")); 3224 demand_empty_rest_of_line (); 3225 return; 3226 } 3227 3228 if (get_absolute_expression_and_terminator (&val) != ',') 3229 { 3230 as_warn (_("bad .mask directive")); 3231 --input_line_pointer; 3232 demand_empty_rest_of_line (); 3233 return; 3234 } 3235 3236 cur_proc_ptr->pdr.regmask = val; 3237 cur_proc_ptr->pdr.regoffset = get_absolute_expression (); 3238 3239 demand_empty_rest_of_line (); 3240 } 3241 3242 /* Parse .loc directives. */ 3244 3245 void 3246 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED) 3247 { 3248 lineno_list_t *list; 3249 symint_t lineno; 3250 3251 if (cur_file_ptr == (efdr_t *) NULL) 3252 { 3253 as_warn (_(".loc before .file")); 3254 demand_empty_rest_of_line (); 3255 return; 3256 } 3257 3258 if (now_seg != text_section) 3259 { 3260 as_warn (_(".loc outside of .text")); 3261 demand_empty_rest_of_line (); 3262 return; 3263 } 3264 3265 /* Skip the file number. */ 3266 SKIP_WHITESPACE (); 3267 get_absolute_expression (); 3268 SKIP_WHITESPACE (); 3269 3270 lineno = get_absolute_expression (); 3271 3272 #ifndef NO_LISTING 3273 if (listing) 3274 listing_source_line (lineno); 3275 #endif 3276 3277 /* If we're building stabs, then output a special label rather than 3278 ECOFF line number info. */ 3279 if (stabs_seen) 3280 { 3281 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text, 3282 symbol_new (FAKE_LABEL_NAME, now_seg, 3283 frag_now, frag_now_fix ()), 3284 (bfd_vma) 0, 0, lineno); 3285 return; 3286 } 3287 3288 list = allocate_lineno_list (); 3289 3290 list->next = (lineno_list_t *) NULL; 3291 list->file = cur_file_ptr; 3292 list->proc = cur_proc_ptr; 3293 list->frag = frag_now; 3294 list->paddr = frag_now_fix (); 3295 list->lineno = lineno; 3296 3297 /* We don't want to merge files which have line numbers. */ 3298 cur_file_ptr->fdr.fMerge = 0; 3299 3300 /* A .loc directive will sometimes appear before a .ent directive, 3301 which means that cur_proc_ptr will be NULL here. Arrange to 3302 patch this up. */ 3303 if (cur_proc_ptr == (proc_t *) NULL) 3304 { 3305 lineno_list_t **pl; 3306 3307 pl = &noproc_lineno; 3308 while (*pl != (lineno_list_t *) NULL) 3309 pl = &(*pl)->next; 3310 *pl = list; 3311 } 3312 else 3313 { 3314 last_lineno = list; 3315 *last_lineno_ptr = list; 3316 last_lineno_ptr = &list->next; 3317 } 3318 } 3319 3320 /* The MIPS assembler sometimes inserts nop instructions in the 3321 instruction stream. When this happens, we must patch up the .loc 3322 information so that it points to the instruction after the nop. */ 3323 3324 void 3325 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset) 3326 { 3327 if (last_lineno != NULL 3328 && last_lineno->frag == old_frag 3329 && last_lineno->paddr == old_frag_offset) 3330 { 3331 last_lineno->frag = frag_now; 3332 last_lineno->paddr = frag_now_fix (); 3333 } 3334 } 3335 3336 /* Make sure the @stabs symbol is emitted. */ 3338 3339 static void 3340 mark_stabs (int ignore ATTRIBUTE_UNUSED) 3341 { 3342 if (! stabs_seen) 3343 { 3344 /* Add a dummy @stabs symbol. */ 3345 stabs_seen = 1; 3346 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info, 3347 (symbolS *) NULL, 3348 (bfd_vma) 0, (symint_t) -1, 3349 ECOFF_MARK_STAB (0)); 3350 } 3351 } 3352 3353 /* Parse .weakext directives. */ 3355 #ifndef TC_MIPS 3356 /* For TC_MIPS use the version in tc-mips.c. */ 3357 void 3358 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED) 3359 { 3360 char *name; 3361 int c; 3362 symbolS *symbolP; 3363 expressionS exp; 3364 3365 c = get_symbol_name (&name); 3366 symbolP = symbol_find_or_make (name); 3367 (void) restore_line_pointer (c); 3368 3369 SKIP_WHITESPACE (); 3370 3371 if (*input_line_pointer == ',') 3372 { 3373 if (S_IS_DEFINED (symbolP)) 3374 { 3375 as_bad (_("symbol `%s' is already defined"), 3376 S_GET_NAME (symbolP)); 3377 ignore_rest_of_line (); 3378 return; 3379 } 3380 3381 ++input_line_pointer; 3382 SKIP_WHITESPACE (); 3383 if (! is_end_of_line[(unsigned char) *input_line_pointer]) 3384 { 3385 expression (&exp); 3386 if (exp.X_op != O_symbol) 3387 { 3388 as_bad (_("bad .weakext directive")); 3389 ignore_rest_of_line (); 3390 return; 3391 } 3392 symbol_set_value_expression (symbolP, &exp); 3393 } 3394 } 3395 3396 S_SET_WEAK (symbolP); 3397 3398 demand_empty_rest_of_line (); 3399 } 3400 #endif /* not TC_MIPS */ 3401 3402 /* Handle .stabs directives. The actual parsing routine is done by a 3404 generic routine. This routine is called via OBJ_PROCESS_STAB. 3405 When this is called, input_line_pointer will be pointing at the 3406 value field of the stab. 3407 3408 .stabs directives have five fields: 3409 "string" a string, encoding the type information. 3410 code a numeric code, defined in <stab.h> 3411 0 a zero 3412 desc a zero or line number 3413 value a numeric value or an address. 3414 3415 If the value is relocatable, we transform this into: 3416 iss points as an index into string space 3417 value value from lookup of the name 3418 st st from lookup of the name 3419 sc sc from lookup of the name 3420 index code|CODE_MASK 3421 3422 If the value is not relocatable, we transform this into: 3423 iss points as an index into string space 3424 value value 3425 st st_Nil 3426 sc sc_Nil 3427 index code|CODE_MASK 3428 3429 .stabn directives have four fields (string is null): 3430 code a numeric code, defined in <stab.h> 3431 0 a zero 3432 desc a zero or a line number 3433 value a numeric value or an address. */ 3434 3435 void 3436 ecoff_stab (segT sec ATTRIBUTE_UNUSED, 3437 int what, 3438 const char *string, 3439 int type, 3440 int other, 3441 int desc) 3442 { 3443 efdr_t *save_file_ptr = cur_file_ptr; 3444 symbolS *sym; 3445 symint_t value; 3446 bfd_vma addend; 3447 st_t st; 3448 sc_t sc; 3449 symint_t indx; 3450 localsym_t *hold = NULL; 3451 3452 ecoff_debugging_seen = 1; 3453 3454 /* We don't handle .stabd. */ 3455 if (what != 's' && what != 'n') 3456 { 3457 as_bad (_(".stab%c is not supported"), what); 3458 return; 3459 } 3460 3461 /* A .stabn uses a null name, not an empty string. */ 3462 if (what == 'n') 3463 string = NULL; 3464 3465 /* We ignore the other field. */ 3466 if (other != 0) 3467 as_warn (_(".stab%c: ignoring non-zero other field"), what); 3468 3469 /* Make sure we have a current file. */ 3470 if (cur_file_ptr == (efdr_t *) NULL) 3471 { 3472 add_file ((const char *) NULL, 0, 1); 3473 save_file_ptr = cur_file_ptr; 3474 } 3475 3476 /* For stabs in ECOFF, the first symbol must be @stabs. This is a 3477 signal to gdb. */ 3478 if (stabs_seen == 0) 3479 mark_stabs (0); 3480 3481 /* Line number stabs are handled differently, since they have two 3482 values, the line number and the address of the label. We use the 3483 index field (aka desc) to hold the line number, and the value 3484 field to hold the address. The symbol type is st_Label, which 3485 should be different from the other stabs, so that gdb can 3486 recognize it. */ 3487 if (type == N_SLINE) 3488 { 3489 SYMR dummy_symr; 3490 char *name; 3491 char name_end; 3492 3493 #ifndef NO_LISTING 3494 if (listing) 3495 listing_source_line ((unsigned int) desc); 3496 #endif 3497 3498 dummy_symr.index = desc; 3499 if (dummy_symr.index != desc) 3500 { 3501 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"), 3502 desc, what); 3503 return; 3504 } 3505 3506 name_end = get_symbol_name (&name); 3507 sym = symbol_find_or_make (name); 3508 (void) restore_line_pointer (name_end); 3509 3510 value = 0; 3511 addend = 0; 3512 st = st_Label; 3513 sc = sc_Text; 3514 indx = desc; 3515 } 3516 else 3517 { 3518 #ifndef NO_LISTING 3519 if (listing && (type == N_SO || type == N_SOL)) 3520 listing_source_file (string); 3521 #endif 3522 3523 if (ISDIGIT (*input_line_pointer) 3524 || *input_line_pointer == '-' 3525 || *input_line_pointer == '+') 3526 { 3527 st = st_Nil; 3528 sc = sc_Nil; 3529 sym = (symbolS *) NULL; 3530 value = get_absolute_expression (); 3531 addend = 0; 3532 } 3533 else if (! is_name_beginner ((unsigned char) *input_line_pointer)) 3534 { 3535 as_warn (_("illegal .stab%c directive, bad character"), what); 3536 return; 3537 } 3538 else 3539 { 3540 expressionS exp; 3541 3542 sc = sc_Nil; 3543 st = st_Nil; 3544 3545 expression (&exp); 3546 if (exp.X_op == O_constant) 3547 { 3548 sym = NULL; 3549 value = exp.X_add_number; 3550 addend = 0; 3551 } 3552 else if (exp.X_op == O_symbol) 3553 { 3554 sym = exp.X_add_symbol; 3555 value = 0; 3556 addend = exp.X_add_number; 3557 } 3558 else 3559 { 3560 sym = make_expr_symbol (&exp); 3561 value = 0; 3562 addend = 0; 3563 } 3564 } 3565 3566 indx = ECOFF_MARK_STAB (type); 3567 } 3568 3569 /* Don't store the stabs symbol we are creating as the type of the 3570 ECOFF symbol. We want to compute the type of the ECOFF symbol 3571 independently. */ 3572 if (sym != (symbolS *) NULL) 3573 hold = symbol_get_obj (sym)->ecoff_symbol; 3574 3575 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx); 3576 3577 if (sym != (symbolS *) NULL) 3578 symbol_get_obj (sym)->ecoff_symbol = hold; 3579 3580 /* Restore normal file type. */ 3581 cur_file_ptr = save_file_ptr; 3582 } 3583 3584 static asection ecoff_scom_section; 3586 static const asymbol ecoff_scom_symbol = 3587 GLOBAL_SYM_INIT (SCOMMON, &ecoff_scom_section); 3588 static asection ecoff_scom_section = 3589 BFD_FAKE_SECTION (ecoff_scom_section, &ecoff_scom_symbol, 3590 SCOMMON, 0, SEC_IS_COMMON | SEC_SMALL_DATA); 3591 3592 /* Frob an ECOFF symbol. Small common symbols go into a special 3593 .scommon section rather than bfd_com_section. */ 3594 3595 void 3596 ecoff_frob_symbol (symbolS *sym) 3597 { 3598 if (S_IS_COMMON (sym) 3599 && S_GET_VALUE (sym) > 0 3600 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput)) 3601 { 3602 S_SET_SEGMENT (sym, &ecoff_scom_section); 3603 } 3604 3605 /* Double check weak symbols. */ 3606 if (S_IS_WEAK (sym)) 3607 { 3608 if (S_IS_COMMON (sym)) 3609 as_bad (_("symbol `%s' can not be both weak and common"), 3610 S_GET_NAME (sym)); 3611 } 3612 } 3613 3614 /* Add bytes to the symbolic information buffer. */ 3616 3617 static char * 3618 ecoff_add_bytes (char **buf, 3619 char **bufend, 3620 char *bufptr, 3621 unsigned long need) 3622 { 3623 unsigned long at; 3624 unsigned long want; 3625 3626 at = bufptr - *buf; 3627 need -= *bufend - bufptr; 3628 if (need < PAGE_SIZE) 3629 need = PAGE_SIZE; 3630 want = (*bufend - *buf) + need; 3631 *buf = XRESIZEVEC (char, *buf, want); 3632 *bufend = *buf + want; 3633 return *buf + at; 3634 } 3635 3636 /* Adjust the symbolic information buffer to the alignment required 3637 for the ECOFF target debugging information. */ 3638 3639 static unsigned long 3640 ecoff_padding_adjust (const struct ecoff_debug_swap *backend, 3641 char **buf, 3642 char **bufend, 3643 unsigned long offset, 3644 char **bufptrptr) 3645 { 3646 bfd_size_type align; 3647 3648 align = backend->debug_align; 3649 if ((offset & (align - 1)) != 0) 3650 { 3651 unsigned long add; 3652 3653 add = align - (offset & (align - 1)); 3654 if ((unsigned long) (*bufend - (*buf + offset)) < add) 3655 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add); 3656 memset (*buf + offset, 0, add); 3657 offset += add; 3658 if (bufptrptr != (char **) NULL) 3659 *bufptrptr = *buf + offset; 3660 } 3661 3662 return offset; 3663 } 3664 3665 /* Build the line number information. */ 3666 3667 static unsigned long 3668 ecoff_build_lineno (const struct ecoff_debug_swap *backend, 3669 char **buf, 3670 char **bufend, 3671 unsigned long offset, 3672 long *linecntptr) 3673 { 3674 char *bufptr; 3675 lineno_list_t *l; 3676 lineno_list_t *last; 3677 efdr_t *file; 3678 proc_t *proc; 3679 unsigned long c; 3680 long iline; 3681 long totcount; 3682 lineno_list_t first; 3683 lineno_list_t *local_first_lineno = first_lineno; 3684 3685 if (linecntptr != (long *) NULL) 3686 *linecntptr = 0; 3687 3688 bufptr = *buf + offset; 3689 3690 file = (efdr_t *) NULL; 3691 proc = (proc_t *) NULL; 3692 last = (lineno_list_t *) NULL; 3693 c = offset; 3694 iline = 0; 3695 totcount = 0; 3696 3697 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to 3698 remove this code. */ 3699 /* For some reason the address of the first procedure is ignored 3700 when reading line numbers. This doesn't matter if the address of 3701 the first procedure is 0, but when gcc is generating MIPS 3702 embedded PIC code, it will put strings in the .text section 3703 before the first procedure. We cope by inserting a dummy line if 3704 the address of the first procedure is not 0. Hopefully this 3705 won't screw things up too badly. 3706 3707 Don't do this for ECOFF assembly source line numbers. They work 3708 without this extra attention. */ 3709 if (debug_type != DEBUG_ECOFF 3710 && first_proc_ptr != (proc_t *) NULL 3711 && local_first_lineno != (lineno_list_t *) NULL 3712 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym) 3713 + bfd_section_vma (S_GET_SEGMENT (first_proc_ptr->sym->as_sym))) 3714 != 0)) 3715 { 3716 first.file = local_first_lineno->file; 3717 first.proc = local_first_lineno->proc; 3718 first.frag = &zero_address_frag; 3719 first.paddr = 0; 3720 first.lineno = 0; 3721 3722 first.next = local_first_lineno; 3723 local_first_lineno = &first; 3724 } 3725 3726 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next) 3727 { 3728 long count; 3729 long delta; 3730 3731 /* Get the offset to the memory address of the next line number 3732 (in words). Do this first, so that we can skip ahead to the 3733 next useful line number entry. */ 3734 if (l->next == (lineno_list_t *) NULL) 3735 { 3736 /* We want a count of zero, but it will be decremented 3737 before it is used. */ 3738 count = 1; 3739 } 3740 else if (l->next->frag->fr_address + l->next->paddr 3741 > l->frag->fr_address + l->paddr) 3742 { 3743 count = ((l->next->frag->fr_address + l->next->paddr 3744 - (l->frag->fr_address + l->paddr)) 3745 >> 2); 3746 } 3747 else 3748 { 3749 /* Don't change last, so we still get the right delta. */ 3750 continue; 3751 } 3752 3753 if (l->file != file || l->proc != proc) 3754 { 3755 if (l->proc != proc && proc != (proc_t *) NULL) 3756 proc->pdr.lnHigh = last->lineno; 3757 if (l->file != file && file != (efdr_t *) NULL) 3758 { 3759 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3760 file->fdr.cline = totcount + count; 3761 if (linecntptr != (long *) NULL) 3762 *linecntptr += totcount + count; 3763 totcount = 0; 3764 } 3765 3766 if (l->file != file) 3767 { 3768 efdr_t *last_file = file; 3769 3770 file = l->file; 3771 if (last_file != (efdr_t *) NULL) 3772 file->fdr.ilineBase 3773 = last_file->fdr.ilineBase + last_file->fdr.cline; 3774 else 3775 file->fdr.ilineBase = 0; 3776 file->fdr.cbLineOffset = c; 3777 } 3778 if (l->proc != proc) 3779 { 3780 proc = l->proc; 3781 if (proc != (proc_t *) NULL) 3782 { 3783 proc->pdr.lnLow = l->lineno; 3784 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset; 3785 proc->pdr.iline = totcount; 3786 } 3787 } 3788 3789 last = (lineno_list_t *) NULL; 3790 } 3791 3792 totcount += count; 3793 3794 /* Get the offset to this line number. */ 3795 if (last == (lineno_list_t *) NULL) 3796 delta = 0; 3797 else 3798 delta = l->lineno - last->lineno; 3799 3800 /* Put in the offset to this line number. */ 3801 while (delta != 0) 3802 { 3803 int setcount; 3804 3805 /* 1 is added to each count read. */ 3806 --count; 3807 /* We can only adjust the word count by up to 15 words at a 3808 time. */ 3809 if (count <= 0x0f) 3810 { 3811 setcount = count; 3812 count = 0; 3813 } 3814 else 3815 { 3816 setcount = 0x0f; 3817 count -= 0x0f; 3818 } 3819 if (delta >= -7 && delta <= 7) 3820 { 3821 if (bufptr >= *bufend) 3822 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3823 *bufptr++ = setcount + (delta << 4); 3824 delta = 0; 3825 ++c; 3826 } 3827 else 3828 { 3829 int set; 3830 3831 if (*bufend - bufptr < 3) 3832 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3); 3833 *bufptr++ = setcount + (8 << 4); 3834 if (delta < -0x8000) 3835 { 3836 set = -0x8000; 3837 delta += 0x8000; 3838 } 3839 else if (delta > 0x7fff) 3840 { 3841 set = 0x7fff; 3842 delta -= 0x7fff; 3843 } 3844 else 3845 { 3846 set = delta; 3847 delta = 0; 3848 } 3849 *bufptr++ = set >> 8; 3850 *bufptr++ = set & 0xffff; 3851 c += 3; 3852 } 3853 } 3854 3855 /* Finish adjusting the count. */ 3856 while (count > 0) 3857 { 3858 if (bufptr >= *bufend) 3859 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3860 /* 1 is added to each count read. */ 3861 --count; 3862 if (count > 0x0f) 3863 { 3864 *bufptr++ = 0x0f; 3865 count -= 0x0f; 3866 } 3867 else 3868 { 3869 *bufptr++ = count; 3870 count = 0; 3871 } 3872 ++c; 3873 } 3874 3875 ++iline; 3876 last = l; 3877 } 3878 3879 if (proc != (proc_t *) NULL) 3880 proc->pdr.lnHigh = last->lineno; 3881 if (file != (efdr_t *) NULL) 3882 { 3883 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3884 file->fdr.cline = totcount; 3885 } 3886 3887 if (linecntptr != (long *) NULL) 3888 *linecntptr += totcount; 3889 3890 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr); 3891 3892 return c; 3893 } 3894 3895 /* Build and swap out the symbols. */ 3896 3897 static unsigned long 3898 ecoff_build_symbols (const struct ecoff_debug_swap *backend, 3899 char **buf, 3900 char **bufend, 3901 unsigned long offset) 3902 { 3903 const bfd_size_type external_sym_size = backend->external_sym_size; 3904 void (* const swap_sym_out) (bfd *, const SYMR *, void *) 3905 = backend->swap_sym_out; 3906 char *sym_out; 3907 long isym; 3908 vlinks_t *file_link; 3909 3910 sym_out = *buf + offset; 3911 3912 isym = 0; 3913 3914 /* The symbols are stored by file. */ 3915 for (file_link = file_desc.first; 3916 file_link != (vlinks_t *) NULL; 3917 file_link = file_link->next) 3918 { 3919 int ifilesym; 3920 int fil_cnt; 3921 efdr_t *fil_ptr; 3922 efdr_t *fil_end; 3923 3924 if (file_link->next == (vlinks_t *) NULL) 3925 fil_cnt = file_desc.objects_last_page; 3926 else 3927 fil_cnt = file_desc.objects_per_page; 3928 fil_ptr = file_link->datum->file; 3929 fil_end = fil_ptr + fil_cnt; 3930 for (; fil_ptr < fil_end; fil_ptr++) 3931 { 3932 vlinks_t *sym_link; 3933 3934 fil_ptr->fdr.isymBase = isym; 3935 ifilesym = isym; 3936 for (sym_link = fil_ptr->symbols.first; 3937 sym_link != (vlinks_t *) NULL; 3938 sym_link = sym_link->next) 3939 { 3940 int sym_cnt; 3941 localsym_t *sym_ptr; 3942 localsym_t *sym_end; 3943 3944 if (sym_link->next == (vlinks_t *) NULL) 3945 sym_cnt = fil_ptr->symbols.objects_last_page; 3946 else 3947 sym_cnt = fil_ptr->symbols.objects_per_page; 3948 sym_ptr = sym_link->datum->sym; 3949 sym_end = sym_ptr + sym_cnt; 3950 for (; sym_ptr < sym_end; sym_ptr++) 3951 { 3952 int local; 3953 symbolS *as_sym; 3954 forward_t *f; 3955 3956 know (sym_ptr->file_ptr == fil_ptr); 3957 3958 /* If there is no associated gas symbol, then this 3959 is a pure debugging symbol. We have already 3960 added the name (if any) to fil_ptr->strings. 3961 Otherwise we must decide whether this is an 3962 external or a local symbol (actually, it may be 3963 both if the local provides additional debugging 3964 information for the external). */ 3965 local = 1; 3966 as_sym = sym_ptr->as_sym; 3967 if (as_sym != (symbolS *) NULL) 3968 { 3969 symint_t indx; 3970 3971 /* The value of a block start symbol is the 3972 offset from the start of the procedure. For 3973 other symbols we just use the gas value (but 3974 we must offset it by the vma of the section, 3975 just as BFD does, because BFD will not see 3976 this value). */ 3977 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block 3978 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text) 3979 { 3980 symbolS *begin_sym; 3981 3982 know (sym_ptr->proc_ptr != (proc_t *) NULL); 3983 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 3984 if (S_GET_SEGMENT (as_sym) 3985 != S_GET_SEGMENT (begin_sym)) 3986 as_warn (_(".begin/.bend in different segments")); 3987 sym_ptr->ecoff_sym.asym.value = 3988 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 3989 } 3990 else 3991 sym_ptr->ecoff_sym.asym.value = 3992 (S_GET_VALUE (as_sym) 3993 + bfd_section_vma (S_GET_SEGMENT (as_sym)) 3994 + sym_ptr->addend); 3995 3996 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym); 3997 3998 /* Set st_Proc to st_StaticProc for local 3999 functions. */ 4000 if (sym_ptr->ecoff_sym.asym.st == st_Proc 4001 && S_IS_DEFINED (as_sym) 4002 && ! S_IS_EXTERNAL (as_sym) 4003 && ! S_IS_WEAK (as_sym)) 4004 sym_ptr->ecoff_sym.asym.st = st_StaticProc; 4005 4006 /* Get the type and storage class based on where 4007 the symbol actually wound up. Traditionally, 4008 N_LBRAC and N_RBRAC are *not* relocated. */ 4009 indx = sym_ptr->ecoff_sym.asym.index; 4010 if (sym_ptr->ecoff_sym.asym.st == st_Nil 4011 && sym_ptr->ecoff_sym.asym.sc == sc_Nil 4012 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4013 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC) 4014 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC)))) 4015 { 4016 segT seg; 4017 const char *segname; 4018 st_t st; 4019 sc_t sc; 4020 4021 seg = S_GET_SEGMENT (as_sym); 4022 segname = segment_name (seg); 4023 4024 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4025 && (S_IS_EXTERNAL (as_sym) 4026 || S_IS_WEAK (as_sym) 4027 || ! S_IS_DEFINED (as_sym))) 4028 { 4029 if ((symbol_get_bfdsym (as_sym)->flags 4030 & BSF_FUNCTION) != 0) 4031 st = st_Proc; 4032 else 4033 st = st_Global; 4034 } 4035 else if (seg == text_section) 4036 st = st_Label; 4037 else 4038 st = st_Static; 4039 4040 if (! S_IS_DEFINED (as_sym)) 4041 { 4042 valueT s; 4043 4044 s = symbol_get_obj (as_sym)->ecoff_extern_size; 4045 if (s == 0 4046 || s > bfd_get_gp_size (stdoutput)) 4047 sc = sc_Undefined; 4048 else 4049 { 4050 sc = sc_SUndefined; 4051 sym_ptr->ecoff_sym.asym.value = s; 4052 } 4053 #ifdef S_SET_SIZE 4054 S_SET_SIZE (as_sym, s); 4055 #endif 4056 } 4057 else if (S_IS_COMMON (as_sym)) 4058 { 4059 if (S_GET_VALUE (as_sym) > 0 4060 && (S_GET_VALUE (as_sym) 4061 <= bfd_get_gp_size (stdoutput))) 4062 sc = sc_SCommon; 4063 else 4064 sc = sc_Common; 4065 } 4066 else if (seg == text_section) 4067 sc = sc_Text; 4068 else if (seg == data_section) 4069 sc = sc_Data; 4070 else if (strcmp (segname, ".rdata") == 0 4071 || strcmp (segname, ".rodata") == 0) 4072 sc = sc_RData; 4073 else if (strcmp (segname, ".sdata") == 0) 4074 sc = sc_SData; 4075 else if (seg == bss_section) 4076 sc = sc_Bss; 4077 else if (strcmp (segname, ".sbss") == 0) 4078 sc = sc_SBss; 4079 else if (seg == bfd_abs_section_ptr) 4080 sc = sc_Abs; 4081 else 4082 { 4083 /* This must be a user named section. 4084 This is not possible in ECOFF, but it 4085 is in ELF. */ 4086 sc = sc_Data; 4087 } 4088 4089 sym_ptr->ecoff_sym.asym.st = (int) st; 4090 sym_ptr->ecoff_sym.asym.sc = (int) sc; 4091 } 4092 4093 /* This is just an external symbol if it is 4094 outside a procedure and it has a type. 4095 FIXME: g++ will generate symbols which have 4096 different names in the debugging information 4097 than the actual symbol. Should we handle 4098 them here? */ 4099 if ((S_IS_EXTERNAL (as_sym) 4100 || S_IS_WEAK (as_sym) 4101 || ! S_IS_DEFINED (as_sym)) 4102 && sym_ptr->proc_ptr == (proc_t *) NULL 4103 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil 4104 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)) 4105 local = 0; 4106 4107 /* This is just an external symbol if it is a 4108 common symbol. */ 4109 if (S_IS_COMMON (as_sym)) 4110 local = 0; 4111 4112 /* If an st_end symbol has an associated gas 4113 symbol, then it is a local label created for 4114 a .bend or .end directive. Stabs line 4115 numbers will have FAKE_LABEL_CHAR in the names. */ 4116 if (local 4117 && sym_ptr->ecoff_sym.asym.st != st_End 4118 && strchr (sym_ptr->name, FAKE_LABEL_CHAR) == 0) 4119 sym_ptr->ecoff_sym.asym.iss = 4120 add_string (&fil_ptr->strings, 4121 fil_ptr->str_hash, 4122 sym_ptr->name, 4123 (shash_t **) NULL); 4124 } 4125 4126 /* We now know the index of this symbol; fill in 4127 locations that have been waiting for that 4128 information. */ 4129 if (sym_ptr->begin_ptr != (localsym_t *) NULL) 4130 { 4131 localsym_t *begin_ptr; 4132 st_t begin_type; 4133 4134 know (local); 4135 begin_ptr = sym_ptr->begin_ptr; 4136 know (begin_ptr->sym_index != -1); 4137 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index; 4138 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4139 sym_ptr->ecoff_sym.asym.iss = 4140 begin_ptr->ecoff_sym.asym.iss; 4141 4142 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st; 4143 if (begin_type == st_File 4144 || begin_type == st_Block) 4145 { 4146 begin_ptr->ecoff_sym.asym.index = 4147 isym - ifilesym + 1; 4148 (*swap_sym_out) (stdoutput, 4149 &begin_ptr->ecoff_sym.asym, 4150 (*buf 4151 + offset 4152 + (begin_ptr->sym_index 4153 * external_sym_size))); 4154 } 4155 else 4156 { 4157 know (begin_ptr->index_ptr != (aux_t *) NULL); 4158 begin_ptr->index_ptr->data.isym = 4159 isym - ifilesym + 1; 4160 } 4161 4162 /* The value of the symbol marking the end of a 4163 procedure is the size of the procedure. The 4164 value of the symbol marking the end of a 4165 block is the offset from the start of the 4166 procedure to the block. */ 4167 if (begin_type == st_Proc 4168 || begin_type == st_StaticProc) 4169 { 4170 know (as_sym != (symbolS *) NULL); 4171 know (begin_ptr->as_sym != (symbolS *) NULL); 4172 if (S_GET_SEGMENT (as_sym) 4173 != S_GET_SEGMENT (begin_ptr->as_sym)) 4174 as_warn (_(".begin/.bend in different segments")); 4175 sym_ptr->ecoff_sym.asym.value = 4176 (S_GET_VALUE (as_sym) 4177 - S_GET_VALUE (begin_ptr->as_sym)); 4178 4179 /* If the size is odd, this is probably a 4180 mips16 function; force it to be even. */ 4181 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0) 4182 ++sym_ptr->ecoff_sym.asym.value; 4183 4184 #ifdef S_SET_SIZE 4185 S_SET_SIZE (begin_ptr->as_sym, 4186 sym_ptr->ecoff_sym.asym.value); 4187 #endif 4188 } 4189 else if (begin_type == st_Block 4190 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4191 { 4192 symbolS *begin_sym; 4193 4194 know (as_sym != (symbolS *) NULL); 4195 know (sym_ptr->proc_ptr != (proc_t *) NULL); 4196 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 4197 if (S_GET_SEGMENT (as_sym) 4198 != S_GET_SEGMENT (begin_sym)) 4199 as_warn (_(".begin/.bend in different segments")); 4200 sym_ptr->ecoff_sym.asym.value = 4201 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 4202 } 4203 } 4204 4205 for (f = sym_ptr->forward_ref; 4206 f != (forward_t *) NULL; 4207 f = f->next) 4208 { 4209 know (local); 4210 f->ifd_ptr->data.isym = fil_ptr->file_index; 4211 f->index_ptr->data.rndx.index = isym - ifilesym; 4212 } 4213 4214 if (local) 4215 { 4216 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size) 4217 sym_out = ecoff_add_bytes (buf, bufend, 4218 sym_out, 4219 external_sym_size); 4220 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym, 4221 sym_out); 4222 sym_out += external_sym_size; 4223 4224 sym_ptr->sym_index = isym; 4225 4226 if (sym_ptr->proc_ptr != (proc_t *) NULL 4227 && sym_ptr->proc_ptr->sym == sym_ptr) 4228 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym; 4229 4230 ++isym; 4231 } 4232 4233 /* Record the local symbol index and file number in 4234 case this is an external symbol. Note that this 4235 destroys the asym.index field. */ 4236 if (as_sym != (symbolS *) NULL 4237 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr) 4238 { 4239 if ((sym_ptr->ecoff_sym.asym.st == st_Proc 4240 || sym_ptr->ecoff_sym.asym.st == st_StaticProc) 4241 && local) 4242 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1; 4243 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index; 4244 4245 /* Don't try to merge an FDR which has an 4246 external symbol attached to it. */ 4247 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym)) 4248 fil_ptr->fdr.fMerge = 0; 4249 } 4250 } 4251 } 4252 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase; 4253 } 4254 } 4255 4256 return offset + isym * external_sym_size; 4257 } 4258 4259 /* Swap out the procedure information. */ 4260 4261 static unsigned long 4262 ecoff_build_procs (const struct ecoff_debug_swap *backend, 4263 char **buf, 4264 char **bufend, 4265 unsigned long offset) 4266 { 4267 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4268 void (* const swap_pdr_out) (bfd *, const PDR *, void *) 4269 = backend->swap_pdr_out; 4270 char *pdr_out; 4271 long iproc; 4272 vlinks_t *file_link; 4273 4274 pdr_out = *buf + offset; 4275 4276 iproc = 0; 4277 4278 /* The procedures are stored by file. */ 4279 for (file_link = file_desc.first; 4280 file_link != (vlinks_t *) NULL; 4281 file_link = file_link->next) 4282 { 4283 int fil_cnt; 4284 efdr_t *fil_ptr; 4285 efdr_t *fil_end; 4286 4287 if (file_link->next == (vlinks_t *) NULL) 4288 fil_cnt = file_desc.objects_last_page; 4289 else 4290 fil_cnt = file_desc.objects_per_page; 4291 fil_ptr = file_link->datum->file; 4292 fil_end = fil_ptr + fil_cnt; 4293 for (; fil_ptr < fil_end; fil_ptr++) 4294 { 4295 vlinks_t *proc_link; 4296 int first; 4297 4298 fil_ptr->fdr.ipdFirst = iproc; 4299 first = 1; 4300 for (proc_link = fil_ptr->procs.first; 4301 proc_link != (vlinks_t *) NULL; 4302 proc_link = proc_link->next) 4303 { 4304 int prc_cnt; 4305 proc_t *proc_ptr; 4306 proc_t *proc_end; 4307 4308 if (proc_link->next == (vlinks_t *) NULL) 4309 prc_cnt = fil_ptr->procs.objects_last_page; 4310 else 4311 prc_cnt = fil_ptr->procs.objects_per_page; 4312 proc_ptr = proc_link->datum->proc; 4313 proc_end = proc_ptr + prc_cnt; 4314 for (; proc_ptr < proc_end; proc_ptr++) 4315 { 4316 symbolS *adr_sym; 4317 unsigned long adr; 4318 4319 adr_sym = proc_ptr->sym->as_sym; 4320 adr = (S_GET_VALUE (adr_sym) 4321 + bfd_section_vma (S_GET_SEGMENT (adr_sym))); 4322 if (first) 4323 { 4324 /* This code used to force the adr of the very 4325 first fdr to be 0. However, the native tools 4326 don't do that, and I can't remember why it 4327 used to work that way, so I took it out. */ 4328 fil_ptr->fdr.adr = adr; 4329 first = 0; 4330 } 4331 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr; 4332 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size) 4333 pdr_out = ecoff_add_bytes (buf, bufend, 4334 pdr_out, 4335 external_pdr_size); 4336 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out); 4337 pdr_out += external_pdr_size; 4338 ++iproc; 4339 } 4340 } 4341 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst; 4342 } 4343 } 4344 4345 return offset + iproc * external_pdr_size; 4346 } 4347 4348 /* Swap out the aux information. */ 4349 4350 static unsigned long 4351 ecoff_build_aux (const struct ecoff_debug_swap *backend, 4352 char **buf, 4353 char **bufend, 4354 unsigned long offset) 4355 { 4356 int bigendian; 4357 union aux_ext *aux_out; 4358 long iaux; 4359 vlinks_t *file_link; 4360 4361 bigendian = bfd_big_endian (stdoutput); 4362 4363 aux_out = (union aux_ext *) (*buf + offset); 4364 4365 iaux = 0; 4366 4367 /* The aux entries are stored by file. */ 4368 for (file_link = file_desc.first; 4369 file_link != (vlinks_t *) NULL; 4370 file_link = file_link->next) 4371 { 4372 int fil_cnt; 4373 efdr_t *fil_ptr; 4374 efdr_t *fil_end; 4375 4376 if (file_link->next == (vlinks_t *) NULL) 4377 fil_cnt = file_desc.objects_last_page; 4378 else 4379 fil_cnt = file_desc.objects_per_page; 4380 fil_ptr = file_link->datum->file; 4381 fil_end = fil_ptr + fil_cnt; 4382 for (; fil_ptr < fil_end; fil_ptr++) 4383 { 4384 vlinks_t *aux_link; 4385 4386 fil_ptr->fdr.fBigendian = bigendian; 4387 fil_ptr->fdr.iauxBase = iaux; 4388 for (aux_link = fil_ptr->aux_syms.first; 4389 aux_link != (vlinks_t *) NULL; 4390 aux_link = aux_link->next) 4391 { 4392 int aux_cnt; 4393 aux_t *aux_ptr; 4394 aux_t *aux_end; 4395 4396 if (aux_link->next == (vlinks_t *) NULL) 4397 aux_cnt = fil_ptr->aux_syms.objects_last_page; 4398 else 4399 aux_cnt = fil_ptr->aux_syms.objects_per_page; 4400 aux_ptr = aux_link->datum->aux; 4401 aux_end = aux_ptr + aux_cnt; 4402 for (; aux_ptr < aux_end; aux_ptr++) 4403 { 4404 if ((unsigned long) (*bufend - (char *) aux_out) 4405 < sizeof (union aux_ext)) 4406 aux_out = ((union aux_ext *) 4407 ecoff_add_bytes (buf, bufend, 4408 (char *) aux_out, 4409 sizeof (union aux_ext))); 4410 switch (aux_ptr->type) 4411 { 4412 case aux_tir: 4413 (*backend->swap_tir_out) (bigendian, 4414 &aux_ptr->data.ti, 4415 &aux_out->a_ti); 4416 break; 4417 case aux_rndx: 4418 (*backend->swap_rndx_out) (bigendian, 4419 &aux_ptr->data.rndx, 4420 &aux_out->a_rndx); 4421 break; 4422 case aux_dnLow: 4423 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow, 4424 aux_out); 4425 break; 4426 case aux_dnHigh: 4427 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh, 4428 aux_out); 4429 break; 4430 case aux_isym: 4431 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym, 4432 aux_out); 4433 break; 4434 case aux_iss: 4435 AUX_PUT_ISS (bigendian, aux_ptr->data.iss, 4436 aux_out); 4437 break; 4438 case aux_width: 4439 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width, 4440 aux_out); 4441 break; 4442 case aux_count: 4443 AUX_PUT_COUNT (bigendian, aux_ptr->data.count, 4444 aux_out); 4445 break; 4446 } 4447 4448 ++aux_out; 4449 ++iaux; 4450 } 4451 } 4452 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase; 4453 } 4454 } 4455 4456 return ecoff_padding_adjust (backend, buf, bufend, 4457 offset + iaux * sizeof (union aux_ext), 4458 (char **) NULL); 4459 } 4460 4461 /* Copy out the strings from a varray_t. This returns the number of 4462 bytes copied, rather than the new offset. */ 4463 4464 static unsigned long 4465 ecoff_build_strings (char **buf, 4466 char **bufend, 4467 unsigned long offset, 4468 varray_t *vp) 4469 { 4470 unsigned long istr; 4471 char *str_out; 4472 vlinks_t *str_link; 4473 4474 str_out = *buf + offset; 4475 4476 istr = 0; 4477 4478 for (str_link = vp->first; 4479 str_link != (vlinks_t *) NULL; 4480 str_link = str_link->next) 4481 { 4482 unsigned long str_cnt; 4483 4484 if (str_link->next == (vlinks_t *) NULL) 4485 str_cnt = vp->objects_last_page; 4486 else 4487 str_cnt = vp->objects_per_page; 4488 4489 if ((unsigned long)(*bufend - str_out) < str_cnt) 4490 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt); 4491 4492 memcpy (str_out, str_link->datum->byte, str_cnt); 4493 str_out += str_cnt; 4494 istr += str_cnt; 4495 } 4496 4497 return istr; 4498 } 4499 4500 /* Dump out the local strings. */ 4501 4502 static unsigned long 4503 ecoff_build_ss (const struct ecoff_debug_swap *backend, 4504 char **buf, 4505 char **bufend, 4506 unsigned long offset) 4507 { 4508 long iss; 4509 vlinks_t *file_link; 4510 4511 iss = 0; 4512 4513 for (file_link = file_desc.first; 4514 file_link != (vlinks_t *) NULL; 4515 file_link = file_link->next) 4516 { 4517 int fil_cnt; 4518 efdr_t *fil_ptr; 4519 efdr_t *fil_end; 4520 4521 if (file_link->next == (vlinks_t *) NULL) 4522 fil_cnt = file_desc.objects_last_page; 4523 else 4524 fil_cnt = file_desc.objects_per_page; 4525 fil_ptr = file_link->datum->file; 4526 fil_end = fil_ptr + fil_cnt; 4527 for (; fil_ptr < fil_end; fil_ptr++) 4528 { 4529 long ss_cnt; 4530 4531 fil_ptr->fdr.issBase = iss; 4532 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss, 4533 &fil_ptr->strings); 4534 fil_ptr->fdr.cbSs = ss_cnt; 4535 iss += ss_cnt; 4536 } 4537 } 4538 4539 return ecoff_padding_adjust (backend, buf, bufend, offset + iss, 4540 (char **) NULL); 4541 } 4542 4543 /* Swap out the file descriptors. */ 4544 4545 static unsigned long 4546 ecoff_build_fdr (const struct ecoff_debug_swap *backend, 4547 char **buf, 4548 char **bufend, 4549 unsigned long offset) 4550 { 4551 const bfd_size_type external_fdr_size = backend->external_fdr_size; 4552 void (* const swap_fdr_out) (bfd *, const FDR *, void *) 4553 = backend->swap_fdr_out; 4554 long ifile; 4555 char *fdr_out; 4556 vlinks_t *file_link; 4557 4558 ifile = 0; 4559 4560 fdr_out = *buf + offset; 4561 4562 for (file_link = file_desc.first; 4563 file_link != (vlinks_t *) NULL; 4564 file_link = file_link->next) 4565 { 4566 int fil_cnt; 4567 efdr_t *fil_ptr; 4568 efdr_t *fil_end; 4569 4570 if (file_link->next == (vlinks_t *) NULL) 4571 fil_cnt = file_desc.objects_last_page; 4572 else 4573 fil_cnt = file_desc.objects_per_page; 4574 fil_ptr = file_link->datum->file; 4575 fil_end = fil_ptr + fil_cnt; 4576 for (; fil_ptr < fil_end; fil_ptr++) 4577 { 4578 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size) 4579 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out, 4580 external_fdr_size); 4581 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out); 4582 fdr_out += external_fdr_size; 4583 ++ifile; 4584 } 4585 } 4586 4587 return offset + ifile * external_fdr_size; 4588 } 4589 4590 /* Set up the external symbols. These are supposed to be handled by 4591 the backend. This routine just gets the right information and 4592 calls a backend function to deal with it. */ 4593 4594 static void 4595 ecoff_setup_ext (void) 4596 { 4597 symbolS *sym; 4598 4599 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4600 { 4601 if (symbol_get_obj (sym)->ecoff_symbol == NULL) 4602 continue; 4603 4604 /* If this is a local symbol, then force the fields to zero. */ 4605 if (! S_IS_EXTERNAL (sym) 4606 && ! S_IS_WEAK (sym) 4607 && S_IS_DEFINED (sym)) 4608 { 4609 struct localsym *lsym; 4610 4611 lsym = symbol_get_obj (sym)->ecoff_symbol; 4612 lsym->ecoff_sym.asym.value = 0; 4613 lsym->ecoff_sym.asym.st = (int) st_Nil; 4614 lsym->ecoff_sym.asym.sc = (int) sc_Nil; 4615 lsym->ecoff_sym.asym.index = indexNil; 4616 } 4617 4618 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym); 4619 } 4620 } 4621 4622 /* Build the ECOFF debugging information. */ 4623 4624 unsigned long 4625 ecoff_build_debug (HDRR *hdr, 4626 char **bufp, 4627 const struct ecoff_debug_swap *backend) 4628 { 4629 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4630 tag_t *ptag; 4631 tag_t *ptag_next; 4632 efdr_t *fil_ptr; 4633 int end_warning; 4634 efdr_t *hold_file_ptr; 4635 proc_t *hold_proc_ptr; 4636 symbolS *sym; 4637 char *buf; 4638 char *bufend; 4639 unsigned long offset; 4640 4641 /* Make sure we have a file. */ 4642 if (first_file == (efdr_t *) NULL) 4643 add_file ((const char *) NULL, 0, 1); 4644 4645 /* Handle any top level tags. */ 4646 for (ptag = top_tag_head->first_tag; 4647 ptag != (tag_t *) NULL; 4648 ptag = ptag_next) 4649 { 4650 if (ptag->forward_ref != (forward_t *) NULL) 4651 add_unknown_tag (ptag); 4652 4653 ptag_next = ptag->same_block; 4654 ptag->hash_ptr->tag_ptr = ptag->same_name; 4655 free_tag (ptag); 4656 } 4657 4658 free_thead (top_tag_head); 4659 4660 /* Look through the symbols. Add debugging information for each 4661 symbol that has not already received it. */ 4662 hold_file_ptr = cur_file_ptr; 4663 hold_proc_ptr = cur_proc_ptr; 4664 cur_proc_ptr = (proc_t *) NULL; 4665 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4666 { 4667 if (symbol_get_obj (sym)->ecoff_symbol != NULL 4668 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL 4669 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0) 4670 continue; 4671 4672 cur_file_ptr = symbol_get_obj (sym)->ecoff_file; 4673 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym, 4674 (bfd_vma) 0, S_GET_VALUE (sym), indexNil); 4675 } 4676 cur_proc_ptr = hold_proc_ptr; 4677 cur_file_ptr = hold_file_ptr; 4678 4679 /* Output an ending symbol for all the files. We have to do this 4680 here for the last file, so we may as well do it for all of the 4681 files. */ 4682 end_warning = 0; 4683 for (fil_ptr = first_file; 4684 fil_ptr != (efdr_t *) NULL; 4685 fil_ptr = fil_ptr->next_file) 4686 { 4687 cur_file_ptr = fil_ptr; 4688 while (cur_file_ptr->cur_scope != (scope_t *) NULL 4689 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL) 4690 { 4691 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev; 4692 if (! end_warning && ! cur_file_ptr->fake) 4693 { 4694 as_warn (_("missing .end or .bend at end of file")); 4695 end_warning = 1; 4696 } 4697 } 4698 if (cur_file_ptr->cur_scope != (scope_t *) NULL) 4699 (void) add_ecoff_symbol ((const char *) NULL, 4700 st_End, sc_Text, 4701 (symbolS *) NULL, 4702 (bfd_vma) 0, 4703 (symint_t) 0, 4704 (symint_t) 0); 4705 } 4706 4707 /* Build the symbolic information. */ 4708 offset = 0; 4709 buf = XNEWVEC (char, PAGE_SIZE); 4710 bufend = buf + PAGE_SIZE; 4711 4712 /* Build the line number information. */ 4713 hdr->cbLineOffset = offset; 4714 offset = ecoff_build_lineno (backend, &buf, &bufend, offset, 4715 &hdr->ilineMax); 4716 hdr->cbLine = offset - hdr->cbLineOffset; 4717 4718 /* We don't use dense numbers at all. */ 4719 hdr->idnMax = 0; 4720 hdr->cbDnOffset = 0; 4721 4722 /* We can't build the PDR table until we have built the symbols, 4723 because a PDR contains a symbol index. However, we set aside 4724 space at this point. */ 4725 hdr->ipdMax = proc_cnt; 4726 hdr->cbPdOffset = offset; 4727 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size) 4728 (void) ecoff_add_bytes (&buf, &bufend, buf + offset, 4729 proc_cnt * external_pdr_size); 4730 offset += proc_cnt * external_pdr_size; 4731 4732 /* Build the local symbols. */ 4733 hdr->cbSymOffset = offset; 4734 offset = ecoff_build_symbols (backend, &buf, &bufend, offset); 4735 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size; 4736 4737 /* Building the symbols initializes the symbol index in the PDR's. 4738 Now we can swap out the PDR's. */ 4739 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset); 4740 4741 /* We don't use optimization symbols. */ 4742 hdr->ioptMax = 0; 4743 hdr->cbOptOffset = 0; 4744 4745 /* Swap out the auxiliary type information. */ 4746 hdr->cbAuxOffset = offset; 4747 offset = ecoff_build_aux (backend, &buf, &bufend, offset); 4748 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext); 4749 4750 /* Copy out the local strings. */ 4751 hdr->cbSsOffset = offset; 4752 offset = ecoff_build_ss (backend, &buf, &bufend, offset); 4753 hdr->issMax = offset - hdr->cbSsOffset; 4754 4755 /* We don't use relative file descriptors. */ 4756 hdr->crfd = 0; 4757 hdr->cbRfdOffset = 0; 4758 4759 /* Swap out the file descriptors. */ 4760 hdr->cbFdOffset = offset; 4761 offset = ecoff_build_fdr (backend, &buf, &bufend, offset); 4762 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size; 4763 4764 /* Set up the external symbols, which are handled by the BFD back 4765 end. */ 4766 hdr->issExtMax = 0; 4767 hdr->cbSsExtOffset = 0; 4768 hdr->iextMax = 0; 4769 hdr->cbExtOffset = 0; 4770 ecoff_setup_ext (); 4771 4772 know ((offset & (backend->debug_align - 1)) == 0); 4773 4774 /* FIXME: This value should be determined from the .verstamp directive, 4775 with reasonable defaults in config files. */ 4776 #ifdef TC_ALPHA 4777 hdr->vstamp = 0x030b; 4778 #else 4779 hdr->vstamp = 0x020b; 4780 #endif 4781 4782 *bufp = buf; 4783 return offset; 4784 } 4785 4786 /* Allocate a cluster of pages. */ 4788 4789 #ifndef MALLOC_CHECK 4790 4791 static page_type * 4792 allocate_cluster (unsigned long npages) 4793 { 4794 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE); 4795 4796 #ifdef ECOFF_DEBUG 4797 if (debug > 3) 4798 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value); 4799 #endif 4800 4801 memset (value, 0, npages * PAGE_USIZE); 4802 4803 return value; 4804 } 4805 4806 static page_type *cluster_ptr = NULL; 4807 static unsigned long pages_left = 0; 4808 4809 #endif /* MALLOC_CHECK */ 4810 4811 /* Allocate one page (which is initialized to 0). */ 4812 4813 static page_type * 4814 allocate_page (void) 4815 { 4816 #ifndef MALLOC_CHECK 4817 4818 if (pages_left == 0) 4819 { 4820 pages_left = MAX_CLUSTER_PAGES; 4821 cluster_ptr = allocate_cluster (pages_left); 4822 } 4823 4824 pages_left--; 4825 return cluster_ptr++; 4826 4827 #else /* MALLOC_CHECK */ 4828 4829 page_type *ptr; 4830 4831 ptr = xmalloc (PAGE_USIZE); 4832 memset (ptr, 0, PAGE_USIZE); 4833 return ptr; 4834 4835 #endif /* MALLOC_CHECK */ 4836 } 4837 4838 /* Allocate scoping information. */ 4840 4841 static scope_t * 4842 allocate_scope (void) 4843 { 4844 scope_t *ptr; 4845 static scope_t initial_scope; 4846 4847 #ifndef MALLOC_CHECK 4848 4849 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4850 if (ptr != (scope_t *) NULL) 4851 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free; 4852 else 4853 { 4854 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated; 4855 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page; 4856 4857 if (unallocated == 0) 4858 { 4859 unallocated = PAGE_SIZE / sizeof (scope_t); 4860 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page (); 4861 alloc_counts[(int) alloc_type_scope].total_pages++; 4862 } 4863 4864 ptr = &cur_page->scope[--unallocated]; 4865 alloc_counts[(int) alloc_type_scope].unallocated = unallocated; 4866 } 4867 4868 #else 4869 4870 ptr = XNEW (scope_t); 4871 4872 #endif 4873 4874 alloc_counts[(int) alloc_type_scope].total_alloc++; 4875 *ptr = initial_scope; 4876 return ptr; 4877 } 4878 4879 /* Free scoping information. */ 4880 4881 static void 4882 free_scope (scope_t *ptr) 4883 { 4884 alloc_counts[(int) alloc_type_scope].total_free++; 4885 4886 #ifndef MALLOC_CHECK 4887 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4888 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr; 4889 #else 4890 free ((void *) ptr); 4891 #endif 4892 } 4893 4894 /* Allocate links for pages in a virtual array. */ 4896 4897 static vlinks_t * 4898 allocate_vlinks (void) 4899 { 4900 vlinks_t *ptr; 4901 static vlinks_t initial_vlinks; 4902 4903 #ifndef MALLOC_CHECK 4904 4905 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated; 4906 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page; 4907 4908 if (unallocated == 0) 4909 { 4910 unallocated = PAGE_SIZE / sizeof (vlinks_t); 4911 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page (); 4912 alloc_counts[(int) alloc_type_vlinks].total_pages++; 4913 } 4914 4915 ptr = &cur_page->vlinks[--unallocated]; 4916 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated; 4917 4918 #else 4919 4920 ptr = XNEW (vlinks_t); 4921 4922 #endif 4923 4924 alloc_counts[(int) alloc_type_vlinks].total_alloc++; 4925 *ptr = initial_vlinks; 4926 return ptr; 4927 } 4928 4929 /* Allocate string hash buckets. */ 4931 4932 static shash_t * 4933 allocate_shash (void) 4934 { 4935 shash_t *ptr; 4936 static shash_t initial_shash; 4937 4938 #ifndef MALLOC_CHECK 4939 4940 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated; 4941 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page; 4942 4943 if (unallocated == 0) 4944 { 4945 unallocated = PAGE_SIZE / sizeof (shash_t); 4946 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page (); 4947 alloc_counts[(int) alloc_type_shash].total_pages++; 4948 } 4949 4950 ptr = &cur_page->shash[--unallocated]; 4951 alloc_counts[(int) alloc_type_shash].unallocated = unallocated; 4952 4953 #else 4954 4955 ptr = XNEW (shash_t); 4956 4957 #endif 4958 4959 alloc_counts[(int) alloc_type_shash].total_alloc++; 4960 *ptr = initial_shash; 4961 return ptr; 4962 } 4963 4964 /* Allocate type hash buckets. */ 4966 4967 static thash_t * 4968 allocate_thash (void) 4969 { 4970 thash_t *ptr; 4971 static thash_t initial_thash; 4972 4973 #ifndef MALLOC_CHECK 4974 4975 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated; 4976 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page; 4977 4978 if (unallocated == 0) 4979 { 4980 unallocated = PAGE_SIZE / sizeof (thash_t); 4981 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page (); 4982 alloc_counts[(int) alloc_type_thash].total_pages++; 4983 } 4984 4985 ptr = &cur_page->thash[--unallocated]; 4986 alloc_counts[(int) alloc_type_thash].unallocated = unallocated; 4987 4988 #else 4989 4990 ptr = XNEW (thash_t); 4991 4992 #endif 4993 4994 alloc_counts[(int) alloc_type_thash].total_alloc++; 4995 *ptr = initial_thash; 4996 return ptr; 4997 } 4998 4999 /* Allocate structure, union, or enum tag information. */ 5001 5002 static tag_t * 5003 allocate_tag (void) 5004 { 5005 tag_t *ptr; 5006 static tag_t initial_tag; 5007 5008 #ifndef MALLOC_CHECK 5009 5010 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5011 if (ptr != (tag_t *) NULL) 5012 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free; 5013 else 5014 { 5015 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated; 5016 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page; 5017 5018 if (unallocated == 0) 5019 { 5020 unallocated = PAGE_SIZE / sizeof (tag_t); 5021 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page (); 5022 alloc_counts[(int) alloc_type_tag].total_pages++; 5023 } 5024 5025 ptr = &cur_page->tag[--unallocated]; 5026 alloc_counts[(int) alloc_type_tag].unallocated = unallocated; 5027 } 5028 5029 #else 5030 5031 ptr = XNEW (tag_t); 5032 5033 #endif 5034 5035 alloc_counts[(int) alloc_type_tag].total_alloc++; 5036 *ptr = initial_tag; 5037 return ptr; 5038 } 5039 5040 /* Free scoping information. */ 5041 5042 static void 5043 free_tag (tag_t *ptr) 5044 { 5045 alloc_counts[(int) alloc_type_tag].total_free++; 5046 5047 #ifndef MALLOC_CHECK 5048 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5049 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr; 5050 #else 5051 free ((PTR_T) ptr); 5052 #endif 5053 } 5054 5055 /* Allocate forward reference to a yet unknown tag. */ 5057 5058 static forward_t * 5059 allocate_forward (void) 5060 { 5061 forward_t *ptr; 5062 static forward_t initial_forward; 5063 5064 #ifndef MALLOC_CHECK 5065 5066 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated; 5067 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page; 5068 5069 if (unallocated == 0) 5070 { 5071 unallocated = PAGE_SIZE / sizeof (forward_t); 5072 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page (); 5073 alloc_counts[(int) alloc_type_forward].total_pages++; 5074 } 5075 5076 ptr = &cur_page->forward[--unallocated]; 5077 alloc_counts[(int) alloc_type_forward].unallocated = unallocated; 5078 5079 #else 5080 5081 ptr = XNEW (forward_t); 5082 5083 #endif 5084 5085 alloc_counts[(int) alloc_type_forward].total_alloc++; 5086 *ptr = initial_forward; 5087 return ptr; 5088 } 5089 5090 /* Allocate head of type hash list. */ 5092 5093 static thead_t * 5094 allocate_thead (void) 5095 { 5096 thead_t *ptr; 5097 static thead_t initial_thead; 5098 5099 #ifndef MALLOC_CHECK 5100 5101 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5102 if (ptr != (thead_t *) NULL) 5103 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free; 5104 else 5105 { 5106 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated; 5107 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page; 5108 5109 if (unallocated == 0) 5110 { 5111 unallocated = PAGE_SIZE / sizeof (thead_t); 5112 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page (); 5113 alloc_counts[(int) alloc_type_thead].total_pages++; 5114 } 5115 5116 ptr = &cur_page->thead[--unallocated]; 5117 alloc_counts[(int) alloc_type_thead].unallocated = unallocated; 5118 } 5119 5120 #else 5121 5122 ptr = XNEW (thead_t); 5123 5124 #endif 5125 5126 alloc_counts[(int) alloc_type_thead].total_alloc++; 5127 *ptr = initial_thead; 5128 return ptr; 5129 } 5130 5131 /* Free scoping information. */ 5132 5133 static void 5134 free_thead (thead_t *ptr) 5135 { 5136 alloc_counts[(int) alloc_type_thead].total_free++; 5137 5138 #ifndef MALLOC_CHECK 5139 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5140 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr; 5141 #else 5142 free ((PTR_T) ptr); 5143 #endif 5144 } 5145 5146 static lineno_list_t * 5148 allocate_lineno_list (void) 5149 { 5150 lineno_list_t *ptr; 5151 static lineno_list_t initial_lineno_list; 5152 5153 #ifndef MALLOC_CHECK 5154 5155 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated; 5156 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page; 5157 5158 if (unallocated == 0) 5159 { 5160 unallocated = PAGE_SIZE / sizeof (lineno_list_t); 5161 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page (); 5162 alloc_counts[(int) alloc_type_lineno].total_pages++; 5163 } 5164 5165 ptr = &cur_page->lineno[--unallocated]; 5166 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated; 5167 5168 #else 5169 5170 ptr = XNEW (lineno_list_t); 5171 5172 #endif 5173 5174 alloc_counts[(int) alloc_type_lineno].total_alloc++; 5175 *ptr = initial_lineno_list; 5176 return ptr; 5177 } 5178 5179 void 5180 ecoff_set_gp_prolog_size (int sz) 5181 { 5182 if (cur_proc_ptr == 0) 5183 return; 5184 5185 cur_proc_ptr->pdr.gp_prologue = sz; 5186 if (cur_proc_ptr->pdr.gp_prologue != sz) 5187 { 5188 as_warn (_("GP prologue size exceeds field size, using 0 instead")); 5189 cur_proc_ptr->pdr.gp_prologue = 0; 5190 } 5191 5192 cur_proc_ptr->pdr.gp_used = 1; 5193 } 5194 5195 int 5196 ecoff_no_current_file (void) 5197 { 5198 return cur_file_ptr == (efdr_t *) NULL; 5199 } 5200 5201 void 5202 ecoff_generate_asm_lineno (void) 5203 { 5204 unsigned int lineno; 5205 const char *filename; 5206 lineno_list_t *list; 5207 5208 filename = as_where (&lineno); 5209 5210 if (current_stabs_filename == (char *) NULL 5211 || filename_cmp (current_stabs_filename, filename)) 5212 add_file (filename, 0, 1); 5213 5214 list = allocate_lineno_list (); 5215 5216 list->next = (lineno_list_t *) NULL; 5217 list->file = cur_file_ptr; 5218 list->proc = cur_proc_ptr; 5219 list->frag = frag_now; 5220 list->paddr = frag_now_fix (); 5221 list->lineno = lineno; 5222 5223 /* We don't want to merge files which have line numbers. */ 5224 cur_file_ptr->fdr.fMerge = 0; 5225 5226 /* A .loc directive will sometimes appear before a .ent directive, 5227 which means that cur_proc_ptr will be NULL here. Arrange to 5228 patch this up. */ 5229 if (cur_proc_ptr == (proc_t *) NULL) 5230 { 5231 lineno_list_t **pl; 5232 5233 pl = &noproc_lineno; 5234 while (*pl != (lineno_list_t *) NULL) 5235 pl = &(*pl)->next; 5236 *pl = list; 5237 } 5238 else 5239 { 5240 last_lineno = list; 5241 *last_lineno_ptr = list; 5242 last_lineno_ptr = &list->next; 5243 } 5244 } 5245 5246 #else 5247 5248 void 5249 ecoff_generate_asm_lineno (void) 5250 { 5251 } 5252 5253 #endif /* ECOFF_DEBUGGING */ 5254
Indexes created Sun Mar 15 00:25:29 UTC 2026