ecoff.c revision 1.6
1 /* ECOFF debugging support. 2 Copyright (C) 1993-2018 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 struct hash_control *str_hash; /* string hash table */ 952 thash_t *thash_head[THASH_SIZE]; 953 } efdr_t; 954 955 /* Pre-initialized extended file structure. */ 956 static const efdr_t init_file = { 957 { /* FDR structure */ 958 0, /* adr: memory address of beginning of file */ 959 0, /* rss: file name (of source, if known) */ 960 0, /* issBase: file's string space */ 961 0, /* cbSs: number of bytes in the ss */ 962 0, /* isymBase: beginning of symbols */ 963 0, /* csym: count file's of symbols */ 964 0, /* ilineBase: file's line symbols */ 965 0, /* cline: count of file's line symbols */ 966 0, /* ioptBase: file's optimization entries */ 967 0, /* copt: count of file's optimization entries */ 968 0, /* ipdFirst: start of procedures for this file */ 969 0, /* cpd: count of procedures for this file */ 970 0, /* iauxBase: file's auxiliary entries */ 971 0, /* caux: count of file's auxiliary entries */ 972 0, /* rfdBase: index into the file indirect table */ 973 0, /* crfd: count file indirect entries */ 974 langC, /* lang: language for this file */ 975 1, /* fMerge: whether this file can be merged */ 976 0, /* fReadin: true if read in (not just created) */ 977 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */ 978 GLEVEL_2, /* glevel: level this file was compiled with */ 979 0, /* reserved: reserved for future use */ 980 0, /* cbLineOffset: byte offset from header for this file ln's */ 981 0, /* cbLine: size of lines for this file */ 982 }, 983 984 (FDR *)0, /* orig_fdr: original file header pointer */ 985 (char *)0, /* name: pointer to filename */ 986 0, /* fake: whether this is a faked .file */ 987 0, /* void_type: ptr to aux node for void type */ 988 0, /* int_type: ptr to aux node for int type */ 989 (scope_t *)0, /* cur_scope: current scope being processed */ 990 0, /* file_index: current file # */ 991 0, /* nested_scopes: # nested scopes */ 992 INIT_VARRAY (char), /* strings: local string varray */ 993 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */ 994 INIT_VARRAY (proc_t), /* procs: procedure varray */ 995 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */ 996 997 (struct efdr *)0, /* next_file: next file structure */ 998 999 (struct hash_control *)0, /* str_hash: string hash table */ 1000 { 0 }, /* thash_head: type hash table */ 1001 }; 1002 1003 static efdr_t *first_file; /* first file descriptor */ 1004 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */ 1005 1006 /* Line number information is kept in a list until the assembly is 1007 finished. */ 1008 typedef struct lineno_list { 1009 struct lineno_list *next; /* next element in list */ 1010 efdr_t *file; /* file this line is in */ 1011 proc_t *proc; /* procedure this line is in */ 1012 fragS *frag; /* fragment this line number is in */ 1013 unsigned long paddr; /* offset within fragment */ 1014 long lineno; /* actual line number */ 1015 } lineno_list_t; 1016 1017 static lineno_list_t *first_lineno; 1018 static lineno_list_t *last_lineno; 1019 static lineno_list_t **last_lineno_ptr = &first_lineno; 1020 1021 /* Sometimes there will be some .loc statements before a .ent. We 1022 keep them in this list so that we can fill in the procedure pointer 1023 after we see the .ent. */ 1024 static lineno_list_t *noproc_lineno; 1025 1026 /* Union of various things that are held in pages. */ 1027 typedef union page { 1028 char byte [ PAGE_SIZE ]; 1029 unsigned char ubyte [ PAGE_SIZE ]; 1030 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ]; 1031 FDR ofile [ PAGE_SIZE / sizeof (FDR) ]; 1032 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ]; 1033 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ]; 1034 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ]; 1035 DNR dense [ PAGE_SIZE / sizeof (DNR) ]; 1036 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ]; 1037 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ]; 1038 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ]; 1039 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ]; 1040 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ]; 1041 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ]; 1042 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ]; 1043 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ]; 1044 } page_type; 1045 1046 /* Structure holding allocation information for small sized structures. */ 1047 typedef struct alloc_info { 1048 char *alloc_name; /* name of this allocation type (must be first) */ 1049 page_type *cur_page; /* current page being allocated from */ 1050 small_free_t free_list; /* current free list if any */ 1051 int unallocated; /* number of elements unallocated on page */ 1052 int total_alloc; /* total number of allocations */ 1053 int total_free; /* total number of frees */ 1054 int total_pages; /* total number of pages allocated */ 1055 } alloc_info_t; 1056 1057 /* Type information collected together. */ 1058 typedef struct type_info { 1059 bt_t basic_type; /* basic type */ 1060 int orig_type; /* original COFF-based type */ 1061 int num_tq; /* # type qualifiers */ 1062 int num_dims; /* # dimensions */ 1063 int num_sizes; /* # sizes */ 1064 int extra_sizes; /* # extra sizes not tied with dims */ 1065 tag_t * tag_ptr; /* tag pointer */ 1066 int bitfield; /* symbol is a bitfield */ 1067 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/ 1068 symint_t dimensions [N_TQ]; /* dimensions for each array */ 1069 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of 1070 struct/union/enum + bitfield size */ 1071 } type_info_t; 1072 1073 /* Pre-initialized type_info struct. */ 1074 static const type_info_t type_info_init = { 1075 bt_Nil, /* basic type */ 1076 T_NULL, /* original COFF-based type */ 1077 0, /* # type qualifiers */ 1078 0, /* # dimensions */ 1079 0, /* # sizes */ 1080 0, /* sizes not tied with dims */ 1081 NULL, /* ptr to tag */ 1082 0, /* bitfield */ 1083 { /* type qualifiers */ 1084 tq_Nil, 1085 tq_Nil, 1086 tq_Nil, 1087 tq_Nil, 1088 tq_Nil, 1089 tq_Nil, 1090 }, 1091 { /* dimensions */ 1092 0, 1093 0, 1094 0, 1095 0, 1096 0, 1097 0 1098 }, 1099 { /* sizes */ 1100 0, 1101 0, 1102 0, 1103 0, 1104 0, 1105 0, 1106 0, 1107 0, 1108 }, 1109 }; 1110 1111 /* Global hash table for the tags table and global table for file 1112 descriptors. */ 1113 1114 static varray_t file_desc = INIT_VARRAY (efdr_t); 1115 1116 static struct hash_control *tag_hash; 1117 1118 /* Static types for int and void. Also, remember the last function's 1119 type (which is set up when we encounter the declaration for the 1120 function, and used when the end block for the function is emitted. */ 1121 1122 static type_info_t int_type_info; 1123 static type_info_t void_type_info; 1124 static type_info_t last_func_type_info; 1125 static symbolS *last_func_sym_value; 1126 1127 /* Convert COFF basic type to ECOFF basic type. The T_NULL type 1128 really should use bt_Void, but this causes the current ecoff GDB to 1129 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS 1130 2.0) doesn't understand it, even though the compiler generates it. 1131 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler 1132 suite, but for now go with what works. 1133 1134 It would make sense for the .type and .scl directives to use the 1135 ECOFF numbers directly, rather than using the COFF numbers and 1136 mapping them. Unfortunately, this is historically what mips-tfile 1137 expects, and changing gcc now would be a considerable pain (the 1138 native compiler generates debugging information internally, rather 1139 than via the assembler, so it will never use .type or .scl). */ 1140 1141 static const bt_t map_coff_types[] = { 1142 bt_Nil, /* T_NULL */ 1143 bt_Nil, /* T_ARG */ 1144 bt_Char, /* T_CHAR */ 1145 bt_Short, /* T_SHORT */ 1146 bt_Int, /* T_INT */ 1147 bt_Long, /* T_LONG */ 1148 bt_Float, /* T_FLOAT */ 1149 bt_Double, /* T_DOUBLE */ 1150 bt_Struct, /* T_STRUCT */ 1151 bt_Union, /* T_UNION */ 1152 bt_Enum, /* T_ENUM */ 1153 bt_Enum, /* T_MOE */ 1154 bt_UChar, /* T_UCHAR */ 1155 bt_UShort, /* T_USHORT */ 1156 bt_UInt, /* T_UINT */ 1157 bt_ULong /* T_ULONG */ 1158 }; 1159 1160 /* Convert COFF storage class to ECOFF storage class. */ 1161 static const sc_t map_coff_storage[] = { 1162 sc_Nil, /* 0: C_NULL */ 1163 sc_Abs, /* 1: C_AUTO auto var */ 1164 sc_Undefined, /* 2: C_EXT external */ 1165 sc_Data, /* 3: C_STAT static */ 1166 sc_Register, /* 4: C_REG register */ 1167 sc_Undefined, /* 5: C_EXTDEF ??? */ 1168 sc_Text, /* 6: C_LABEL label */ 1169 sc_Text, /* 7: C_ULABEL user label */ 1170 sc_Info, /* 8: C_MOS member of struct */ 1171 sc_Abs, /* 9: C_ARG argument */ 1172 sc_Info, /* 10: C_STRTAG struct tag */ 1173 sc_Info, /* 11: C_MOU member of union */ 1174 sc_Info, /* 12: C_UNTAG union tag */ 1175 sc_Info, /* 13: C_TPDEF typedef */ 1176 sc_Data, /* 14: C_USTATIC ??? */ 1177 sc_Info, /* 15: C_ENTAG enum tag */ 1178 sc_Info, /* 16: C_MOE member of enum */ 1179 sc_Register, /* 17: C_REGPARM register parameter */ 1180 sc_Bits, /* 18; C_FIELD bitfield */ 1181 sc_Nil, /* 19 */ 1182 sc_Nil, /* 20 */ 1183 sc_Nil, /* 21 */ 1184 sc_Nil, /* 22 */ 1185 sc_Nil, /* 23 */ 1186 sc_Nil, /* 24 */ 1187 sc_Nil, /* 25 */ 1188 sc_Nil, /* 26 */ 1189 sc_Nil, /* 27 */ 1190 sc_Nil, /* 28 */ 1191 sc_Nil, /* 29 */ 1192 sc_Nil, /* 30 */ 1193 sc_Nil, /* 31 */ 1194 sc_Nil, /* 32 */ 1195 sc_Nil, /* 33 */ 1196 sc_Nil, /* 34 */ 1197 sc_Nil, /* 35 */ 1198 sc_Nil, /* 36 */ 1199 sc_Nil, /* 37 */ 1200 sc_Nil, /* 38 */ 1201 sc_Nil, /* 39 */ 1202 sc_Nil, /* 40 */ 1203 sc_Nil, /* 41 */ 1204 sc_Nil, /* 42 */ 1205 sc_Nil, /* 43 */ 1206 sc_Nil, /* 44 */ 1207 sc_Nil, /* 45 */ 1208 sc_Nil, /* 46 */ 1209 sc_Nil, /* 47 */ 1210 sc_Nil, /* 48 */ 1211 sc_Nil, /* 49 */ 1212 sc_Nil, /* 50 */ 1213 sc_Nil, /* 51 */ 1214 sc_Nil, /* 52 */ 1215 sc_Nil, /* 53 */ 1216 sc_Nil, /* 54 */ 1217 sc_Nil, /* 55 */ 1218 sc_Nil, /* 56 */ 1219 sc_Nil, /* 57 */ 1220 sc_Nil, /* 58 */ 1221 sc_Nil, /* 59 */ 1222 sc_Nil, /* 60 */ 1223 sc_Nil, /* 61 */ 1224 sc_Nil, /* 62 */ 1225 sc_Nil, /* 63 */ 1226 sc_Nil, /* 64 */ 1227 sc_Nil, /* 65 */ 1228 sc_Nil, /* 66 */ 1229 sc_Nil, /* 67 */ 1230 sc_Nil, /* 68 */ 1231 sc_Nil, /* 69 */ 1232 sc_Nil, /* 70 */ 1233 sc_Nil, /* 71 */ 1234 sc_Nil, /* 72 */ 1235 sc_Nil, /* 73 */ 1236 sc_Nil, /* 74 */ 1237 sc_Nil, /* 75 */ 1238 sc_Nil, /* 76 */ 1239 sc_Nil, /* 77 */ 1240 sc_Nil, /* 78 */ 1241 sc_Nil, /* 79 */ 1242 sc_Nil, /* 80 */ 1243 sc_Nil, /* 81 */ 1244 sc_Nil, /* 82 */ 1245 sc_Nil, /* 83 */ 1246 sc_Nil, /* 84 */ 1247 sc_Nil, /* 85 */ 1248 sc_Nil, /* 86 */ 1249 sc_Nil, /* 87 */ 1250 sc_Nil, /* 88 */ 1251 sc_Nil, /* 89 */ 1252 sc_Nil, /* 90 */ 1253 sc_Nil, /* 91 */ 1254 sc_Nil, /* 92 */ 1255 sc_Nil, /* 93 */ 1256 sc_Nil, /* 94 */ 1257 sc_Nil, /* 95 */ 1258 sc_Nil, /* 96 */ 1259 sc_Nil, /* 97 */ 1260 sc_Nil, /* 98 */ 1261 sc_Nil, /* 99 */ 1262 sc_Text, /* 100: C_BLOCK block start/end */ 1263 sc_Text, /* 101: C_FCN function start/end */ 1264 sc_Info, /* 102: C_EOS end of struct/union/enum */ 1265 sc_Nil, /* 103: C_FILE file start */ 1266 sc_Nil, /* 104: C_LINE line number */ 1267 sc_Nil, /* 105: C_ALIAS combined type info */ 1268 sc_Nil, /* 106: C_HIDDEN ??? */ 1269 }; 1270 1271 /* Convert COFF storage class to ECOFF symbol type. */ 1272 static const st_t map_coff_sym_type[] = { 1273 st_Nil, /* 0: C_NULL */ 1274 st_Local, /* 1: C_AUTO auto var */ 1275 st_Global, /* 2: C_EXT external */ 1276 st_Static, /* 3: C_STAT static */ 1277 st_Local, /* 4: C_REG register */ 1278 st_Global, /* 5: C_EXTDEF ??? */ 1279 st_Label, /* 6: C_LABEL label */ 1280 st_Label, /* 7: C_ULABEL user label */ 1281 st_Member, /* 8: C_MOS member of struct */ 1282 st_Param, /* 9: C_ARG argument */ 1283 st_Block, /* 10: C_STRTAG struct tag */ 1284 st_Member, /* 11: C_MOU member of union */ 1285 st_Block, /* 12: C_UNTAG union tag */ 1286 st_Typedef, /* 13: C_TPDEF typedef */ 1287 st_Static, /* 14: C_USTATIC ??? */ 1288 st_Block, /* 15: C_ENTAG enum tag */ 1289 st_Member, /* 16: C_MOE member of enum */ 1290 st_Param, /* 17: C_REGPARM register parameter */ 1291 st_Member, /* 18; C_FIELD bitfield */ 1292 st_Nil, /* 19 */ 1293 st_Nil, /* 20 */ 1294 st_Nil, /* 21 */ 1295 st_Nil, /* 22 */ 1296 st_Nil, /* 23 */ 1297 st_Nil, /* 24 */ 1298 st_Nil, /* 25 */ 1299 st_Nil, /* 26 */ 1300 st_Nil, /* 27 */ 1301 st_Nil, /* 28 */ 1302 st_Nil, /* 29 */ 1303 st_Nil, /* 30 */ 1304 st_Nil, /* 31 */ 1305 st_Nil, /* 32 */ 1306 st_Nil, /* 33 */ 1307 st_Nil, /* 34 */ 1308 st_Nil, /* 35 */ 1309 st_Nil, /* 36 */ 1310 st_Nil, /* 37 */ 1311 st_Nil, /* 38 */ 1312 st_Nil, /* 39 */ 1313 st_Nil, /* 40 */ 1314 st_Nil, /* 41 */ 1315 st_Nil, /* 42 */ 1316 st_Nil, /* 43 */ 1317 st_Nil, /* 44 */ 1318 st_Nil, /* 45 */ 1319 st_Nil, /* 46 */ 1320 st_Nil, /* 47 */ 1321 st_Nil, /* 48 */ 1322 st_Nil, /* 49 */ 1323 st_Nil, /* 50 */ 1324 st_Nil, /* 51 */ 1325 st_Nil, /* 52 */ 1326 st_Nil, /* 53 */ 1327 st_Nil, /* 54 */ 1328 st_Nil, /* 55 */ 1329 st_Nil, /* 56 */ 1330 st_Nil, /* 57 */ 1331 st_Nil, /* 58 */ 1332 st_Nil, /* 59 */ 1333 st_Nil, /* 60 */ 1334 st_Nil, /* 61 */ 1335 st_Nil, /* 62 */ 1336 st_Nil, /* 63 */ 1337 st_Nil, /* 64 */ 1338 st_Nil, /* 65 */ 1339 st_Nil, /* 66 */ 1340 st_Nil, /* 67 */ 1341 st_Nil, /* 68 */ 1342 st_Nil, /* 69 */ 1343 st_Nil, /* 70 */ 1344 st_Nil, /* 71 */ 1345 st_Nil, /* 72 */ 1346 st_Nil, /* 73 */ 1347 st_Nil, /* 74 */ 1348 st_Nil, /* 75 */ 1349 st_Nil, /* 76 */ 1350 st_Nil, /* 77 */ 1351 st_Nil, /* 78 */ 1352 st_Nil, /* 79 */ 1353 st_Nil, /* 80 */ 1354 st_Nil, /* 81 */ 1355 st_Nil, /* 82 */ 1356 st_Nil, /* 83 */ 1357 st_Nil, /* 84 */ 1358 st_Nil, /* 85 */ 1359 st_Nil, /* 86 */ 1360 st_Nil, /* 87 */ 1361 st_Nil, /* 88 */ 1362 st_Nil, /* 89 */ 1363 st_Nil, /* 90 */ 1364 st_Nil, /* 91 */ 1365 st_Nil, /* 92 */ 1366 st_Nil, /* 93 */ 1367 st_Nil, /* 94 */ 1368 st_Nil, /* 95 */ 1369 st_Nil, /* 96 */ 1370 st_Nil, /* 97 */ 1371 st_Nil, /* 98 */ 1372 st_Nil, /* 99 */ 1373 st_Block, /* 100: C_BLOCK block start/end */ 1374 st_Proc, /* 101: C_FCN function start/end */ 1375 st_End, /* 102: C_EOS end of struct/union/enum */ 1376 st_File, /* 103: C_FILE file start */ 1377 st_Nil, /* 104: C_LINE line number */ 1378 st_Nil, /* 105: C_ALIAS combined type info */ 1379 st_Nil, /* 106: C_HIDDEN ??? */ 1380 }; 1381 1382 /* Keep track of different sized allocation requests. */ 1383 static alloc_info_t alloc_counts[(int) alloc_type_last]; 1384 1385 /* Record whether we have seen any debugging information. */ 1387 int ecoff_debugging_seen = 0; 1388 1389 /* Various statics. */ 1390 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */ 1391 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */ 1392 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */ 1393 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */ 1394 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */ 1395 #ifdef ECOFF_DEBUG 1396 static int debug = 0; /* trace functions */ 1397 #endif 1398 static int stabs_seen = 0; /* != 0 if stabs have been seen */ 1399 1400 static int current_file_idx; 1401 static const char *current_stabs_filename; 1402 1403 /* Pseudo symbol to use when putting stabs into the symbol table. */ 1404 #ifndef STABS_SYMBOL 1405 #define STABS_SYMBOL "@stabs" 1406 #endif 1407 1408 static char stabs_symbol[] = STABS_SYMBOL; 1409 1410 /* Prototypes for functions defined in this file. */ 1412 1413 static void add_varray_page (varray_t *vp); 1414 static symint_t add_string (varray_t *vp, 1415 struct hash_control *hash_tbl, 1416 const char *str, 1417 shash_t **ret_hash); 1418 static localsym_t *add_ecoff_symbol (const char *str, st_t type, 1419 sc_t storage, symbolS *sym, 1420 bfd_vma addend, symint_t value, 1421 symint_t indx); 1422 static symint_t add_aux_sym_symint (symint_t aux_word); 1423 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index); 1424 static symint_t add_aux_sym_tir (type_info_t *t, 1425 hash_state_t state, 1426 thash_t **hash_tbl); 1427 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type); 1428 static void add_unknown_tag (tag_t *ptag); 1429 static void add_procedure (char *func, 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 = hash_new (); 1484 top_tag_head = allocate_thead (); 1485 top_tag_head->first_tag = (tag_t *) NULL; 1486 top_tag_head->free = (thead_t *) NULL; 1487 top_tag_head->prev = cur_tag_head; 1488 cur_tag_head = top_tag_head; 1489 } 1490 1491 /* This function should be called when a symbol is created. */ 1492 1493 void 1494 ecoff_symbol_new_hook (symbolS *symbolP) 1495 { 1496 OBJ_SYMFIELD_TYPE *obj; 1497 1498 /* Make sure that we have a file pointer, but only if we have seen a 1499 file. If we haven't seen a file, then this is a probably special 1500 symbol created by md_begin which may required special handling at 1501 some point. Creating a dummy file with a dummy name is certainly 1502 wrong. */ 1503 if (cur_file_ptr == (efdr_t *) NULL 1504 && seen_at_least_1_file ()) 1505 add_file ((const char *) NULL, 0, 1); 1506 obj = symbol_get_obj (symbolP); 1507 obj->ecoff_file = cur_file_ptr; 1508 obj->ecoff_symbol = NULL; 1509 obj->ecoff_extern_size = 0; 1510 } 1511 1512 void 1513 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) 1514 { 1515 OBJ_SYMFIELD_TYPE *n, *o; 1516 1517 n = symbol_get_obj (newsymP); 1518 o = symbol_get_obj (orgsymP); 1519 memcpy (n, o, sizeof *n); 1520 } 1521 1522 /* Add a page to a varray object. */ 1524 1525 static void 1526 add_varray_page (varray_t *vp /* varray to add page to */) 1527 { 1528 vlinks_t *new_links = allocate_vlinks (); 1529 1530 #ifdef MALLOC_CHECK 1531 if (vp->object_size > 1) 1532 new_links->datum = (page_type *) xcalloc (1, vp->object_size); 1533 else 1534 #endif 1535 new_links->datum = allocate_page (); 1536 1537 alloc_counts[(int) alloc_type_varray].total_alloc++; 1538 alloc_counts[(int) alloc_type_varray].total_pages++; 1539 1540 new_links->start_index = vp->num_allocated; 1541 vp->objects_last_page = 0; 1542 1543 if (vp->first == (vlinks_t *) NULL) /* first allocation? */ 1544 vp->first = vp->last = new_links; 1545 else 1546 { /* 2nd or greater allocation */ 1547 new_links->prev = vp->last; 1548 vp->last->next = new_links; 1549 vp->last = new_links; 1550 } 1551 } 1552 1553 /* Add a string (and null pad) to one of the string tables. */ 1555 1556 static symint_t 1557 add_string (varray_t *vp, /* string obstack */ 1558 struct hash_control *hash_tbl, /* ptr to hash table */ 1559 const char *str, /* string */ 1560 shash_t **ret_hash /* return hash pointer */) 1561 { 1562 unsigned long len = strlen (str); 1563 shash_t *hash_ptr; 1564 1565 if (len >= PAGE_USIZE) 1566 as_fatal (_("string too big (%lu bytes)"), len); 1567 1568 hash_ptr = (shash_t *) hash_find (hash_tbl, str); 1569 if (hash_ptr == (shash_t *) NULL) 1570 { 1571 const char *err; 1572 1573 if (vp->objects_last_page + len >= PAGE_USIZE) 1574 { 1575 vp->num_allocated = 1576 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE; 1577 add_varray_page (vp); 1578 } 1579 1580 hash_ptr = allocate_shash (); 1581 hash_ptr->indx = vp->num_allocated; 1582 1583 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page]; 1584 1585 vp->objects_last_page += len + 1; 1586 vp->num_allocated += len + 1; 1587 1588 strcpy (hash_ptr->string, str); 1589 1590 err = hash_insert (hash_tbl, str, (char *) hash_ptr); 1591 if (err) 1592 as_fatal (_("inserting \"%s\" into string hash table: %s"), 1593 str, err); 1594 } 1595 1596 if (ret_hash != (shash_t **) NULL) 1597 *ret_hash = hash_ptr; 1598 1599 return hash_ptr->indx; 1600 } 1601 1602 /* Add debugging information for a symbol. */ 1604 1605 static localsym_t * 1606 add_ecoff_symbol (const char *str, /* symbol name */ 1607 st_t type, /* symbol type */ 1608 sc_t storage, /* storage class */ 1609 symbolS *sym_value, /* associated symbol. */ 1610 bfd_vma addend, /* addend to sym_value. */ 1611 symint_t value, /* value of symbol */ 1612 symint_t indx /* index to local/aux. syms */) 1613 { 1614 localsym_t *psym; 1615 scope_t *pscope; 1616 thead_t *ptag_head; 1617 tag_t *ptag; 1618 tag_t *ptag_next; 1619 varray_t *vp; 1620 int scope_delta = 0; 1621 shash_t *hash_ptr = (shash_t *) NULL; 1622 1623 if (cur_file_ptr == (efdr_t *) NULL) 1624 as_fatal (_("no current file pointer")); 1625 1626 vp = &cur_file_ptr->symbols; 1627 1628 if (vp->objects_last_page == vp->objects_per_page) 1629 add_varray_page (vp); 1630 1631 psym = &vp->last->datum->sym[vp->objects_last_page++]; 1632 1633 if (str == (const char *) NULL && sym_value != (symbolS *) NULL) 1634 psym->name = S_GET_NAME (sym_value); 1635 else 1636 psym->name = str; 1637 psym->as_sym = sym_value; 1638 if (sym_value != (symbolS *) NULL) 1639 symbol_get_obj (sym_value)->ecoff_symbol = psym; 1640 psym->addend = addend; 1641 psym->file_ptr = cur_file_ptr; 1642 psym->proc_ptr = cur_proc_ptr; 1643 psym->begin_ptr = (localsym_t *) NULL; 1644 psym->index_ptr = (aux_t *) NULL; 1645 psym->forward_ref = (forward_t *) NULL; 1646 psym->sym_index = -1; 1647 memset (&psym->ecoff_sym, 0, sizeof (EXTR)); 1648 psym->ecoff_sym.asym.value = value; 1649 psym->ecoff_sym.asym.st = (unsigned) type; 1650 psym->ecoff_sym.asym.sc = (unsigned) storage; 1651 psym->ecoff_sym.asym.index = indx; 1652 1653 /* If there is an associated symbol, we wait until the end of the 1654 assembly before deciding where to put the name (it may be just an 1655 external symbol). Otherwise, this is just a debugging symbol and 1656 the name should go with the current file. */ 1657 if (sym_value == (symbolS *) NULL) 1658 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL) 1659 ? 0 1660 : add_string (&cur_file_ptr->strings, 1661 cur_file_ptr->str_hash, 1662 str, 1663 &hash_ptr)); 1664 1665 ++vp->num_allocated; 1666 1667 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym)) 1668 return psym; 1669 1670 /* Save the symbol within the hash table if this is a static 1671 item, and it has a name. */ 1672 if (hash_ptr != (shash_t *) NULL 1673 && (type == st_Global || type == st_Static || type == st_Label 1674 || type == st_Proc || type == st_StaticProc)) 1675 hash_ptr->sym_ptr = psym; 1676 1677 /* push or pop a scope if appropriate. */ 1678 switch (type) 1679 { 1680 default: 1681 break; 1682 1683 case st_File: /* beginning of file */ 1684 case st_Proc: /* procedure */ 1685 case st_StaticProc: /* static procedure */ 1686 case st_Block: /* begin scope */ 1687 pscope = allocate_scope (); 1688 pscope->prev = cur_file_ptr->cur_scope; 1689 pscope->lsym = psym; 1690 pscope->type = type; 1691 cur_file_ptr->cur_scope = pscope; 1692 1693 if (type != st_File) 1694 scope_delta = 1; 1695 1696 /* For every block type except file, struct, union, or 1697 enumeration blocks, push a level on the tag stack. We omit 1698 file types, so that tags can span file boundaries. */ 1699 if (type != st_File && storage != sc_Info) 1700 { 1701 ptag_head = allocate_thead (); 1702 ptag_head->first_tag = 0; 1703 ptag_head->prev = cur_tag_head; 1704 cur_tag_head = ptag_head; 1705 } 1706 break; 1707 1708 case st_End: 1709 pscope = cur_file_ptr->cur_scope; 1710 if (pscope == (scope_t *) NULL) 1711 as_fatal (_("too many st_End's")); 1712 else 1713 { 1714 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st; 1715 1716 psym->begin_ptr = pscope->lsym; 1717 1718 if (begin_type != st_File) 1719 scope_delta = -1; 1720 1721 /* Except for file, structure, union, or enumeration end 1722 blocks remove all tags created within this scope. */ 1723 if (begin_type != st_File && storage != sc_Info) 1724 { 1725 ptag_head = cur_tag_head; 1726 cur_tag_head = ptag_head->prev; 1727 1728 for (ptag = ptag_head->first_tag; 1729 ptag != (tag_t *) NULL; 1730 ptag = ptag_next) 1731 { 1732 if (ptag->forward_ref != (forward_t *) NULL) 1733 add_unknown_tag (ptag); 1734 1735 ptag_next = ptag->same_block; 1736 ptag->hash_ptr->tag_ptr = ptag->same_name; 1737 free_tag (ptag); 1738 } 1739 1740 free_thead (ptag_head); 1741 } 1742 1743 cur_file_ptr->cur_scope = pscope->prev; 1744 1745 /* block begin gets next sym #. This is set when we know 1746 the symbol index value. */ 1747 1748 /* Functions push two or more aux words as follows: 1749 1st word: index+1 of the end symbol (filled in later). 1750 2nd word: type of the function (plus any aux words needed). 1751 Also, tie the external pointer back to the function begin symbol. */ 1752 if (begin_type != st_File && begin_type != st_Block) 1753 { 1754 symint_t ty; 1755 varray_t *svp = &cur_file_ptr->aux_syms; 1756 1757 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0); 1758 pscope->lsym->index_ptr = 1759 &svp->last->datum->aux[svp->objects_last_page - 1]; 1760 ty = add_aux_sym_tir (&last_func_type_info, 1761 hash_no, 1762 &cur_file_ptr->thash_head[0]); 1763 (void) ty; 1764 /* This seems to be unnecessary. I'm not even sure what it is 1765 * intended to do. It's from mips-tfile. 1766 * if (last_func_sym_value != (symbolS *) NULL) 1767 * { 1768 * last_func_sym_value->ifd = cur_file_ptr->file_index; 1769 * last_func_sym_value->index = ty; 1770 * } 1771 */ 1772 } 1773 1774 free_scope (pscope); 1775 } 1776 } 1777 1778 cur_file_ptr->nested_scopes += scope_delta; 1779 1780 #ifdef ECOFF_DEBUG 1781 if (debug && type != st_File 1782 && (debug > 2 || type == st_Block || type == st_End 1783 || type == st_Proc || type == st_StaticProc)) 1784 { 1785 char *sc_str = sc_to_string (storage); 1786 char *st_str = st_to_string (type); 1787 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0); 1788 1789 fprintf (stderr, 1790 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s", 1791 value, depth, sc_str); 1792 1793 if (str_start && str_end_p1 - str_start > 0) 1794 fprintf (stderr, " st= %-11s name= %.*s\n", 1795 st_str, str_end_p1 - str_start, str_start); 1796 else 1797 { 1798 unsigned long len = strlen (st_str); 1799 fprintf (stderr, " st= %.*s\n", len - 1, st_str); 1800 } 1801 } 1802 #endif 1803 1804 return psym; 1805 } 1806 1807 /* Add an auxiliary symbol (passing a symint). This is actually used 1809 for integral aux types, not just symints. */ 1810 1811 static symint_t 1812 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */) 1813 { 1814 varray_t *vp; 1815 aux_t *aux_ptr; 1816 1817 if (cur_file_ptr == (efdr_t *) NULL) 1818 as_fatal (_("no current file pointer")); 1819 1820 vp = &cur_file_ptr->aux_syms; 1821 1822 if (vp->objects_last_page == vp->objects_per_page) 1823 add_varray_page (vp); 1824 1825 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1826 aux_ptr->type = aux_isym; 1827 aux_ptr->data.isym = aux_word; 1828 1829 return vp->num_allocated++; 1830 } 1831 1832 /* Add an auxiliary symbol (passing a file/symbol index combo). */ 1833 1834 static symint_t 1835 add_aux_sym_rndx (int file_index, symint_t sym_index) 1836 { 1837 varray_t *vp; 1838 aux_t *aux_ptr; 1839 1840 if (cur_file_ptr == (efdr_t *) NULL) 1841 as_fatal (_("no current file pointer")); 1842 1843 vp = &cur_file_ptr->aux_syms; 1844 1845 if (vp->objects_last_page == vp->objects_per_page) 1846 add_varray_page (vp); 1847 1848 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1849 aux_ptr->type = aux_rndx; 1850 aux_ptr->data.rndx.rfd = file_index; 1851 aux_ptr->data.rndx.index = sym_index; 1852 1853 return vp->num_allocated++; 1854 } 1855 1856 /* Add an auxiliary symbol (passing the basic type and possibly 1858 type qualifiers). */ 1859 1860 static symint_t 1861 add_aux_sym_tir (type_info_t *t, /* current type information */ 1862 hash_state_t state, /* whether to hash type or not */ 1863 thash_t **hash_tbl /* pointer to hash table to use */) 1864 { 1865 varray_t *vp; 1866 aux_t *aux_ptr; 1867 static AUXU init_aux; 1868 symint_t ret; 1869 int i; 1870 AUXU aux; 1871 1872 if (cur_file_ptr == (efdr_t *) NULL) 1873 as_fatal (_("no current file pointer")); 1874 1875 vp = &cur_file_ptr->aux_syms; 1876 1877 aux = init_aux; 1878 aux.ti.bt = (int) t->basic_type; 1879 aux.ti.continued = 0; 1880 aux.ti.fBitfield = t->bitfield; 1881 1882 aux.ti.tq0 = (int) t->type_qualifiers[0]; 1883 aux.ti.tq1 = (int) t->type_qualifiers[1]; 1884 aux.ti.tq2 = (int) t->type_qualifiers[2]; 1885 aux.ti.tq3 = (int) t->type_qualifiers[3]; 1886 aux.ti.tq4 = (int) t->type_qualifiers[4]; 1887 aux.ti.tq5 = (int) t->type_qualifiers[5]; 1888 1889 /* For anything that adds additional information, we must not hash, 1890 so check here, and reset our state. */ 1891 1892 if (state != hash_no 1893 && (t->type_qualifiers[0] == tq_Array 1894 || t->type_qualifiers[1] == tq_Array 1895 || t->type_qualifiers[2] == tq_Array 1896 || t->type_qualifiers[3] == tq_Array 1897 || t->type_qualifiers[4] == tq_Array 1898 || t->type_qualifiers[5] == tq_Array 1899 || t->basic_type == bt_Struct 1900 || t->basic_type == bt_Union 1901 || t->basic_type == bt_Enum 1902 || t->bitfield 1903 || t->num_dims > 0)) 1904 state = hash_no; 1905 1906 /* See if we can hash this type, and save some space, but some types 1907 can't be hashed (because they contain arrays or continuations), 1908 and others can be put into the hash list, but cannot use existing 1909 types because other aux entries precede this one. */ 1910 1911 if (state != hash_no) 1912 { 1913 thash_t *hash_ptr; 1914 symint_t hi; 1915 1916 hi = aux.isym & ((1 << HASHBITS) - 1); 1917 hi %= THASH_SIZE; 1918 1919 for (hash_ptr = hash_tbl[hi]; 1920 hash_ptr != (thash_t *)0; 1921 hash_ptr = hash_ptr->next) 1922 { 1923 if (aux.isym == hash_ptr->type.isym) 1924 break; 1925 } 1926 1927 if (hash_ptr != (thash_t *) NULL && state == hash_yes) 1928 return hash_ptr->indx; 1929 1930 if (hash_ptr == (thash_t *) NULL) 1931 { 1932 hash_ptr = allocate_thash (); 1933 hash_ptr->next = hash_tbl[hi]; 1934 hash_ptr->type = aux; 1935 hash_ptr->indx = vp->num_allocated; 1936 hash_tbl[hi] = hash_ptr; 1937 } 1938 } 1939 1940 /* Everything is set up, add the aux symbol. */ 1941 if (vp->objects_last_page == vp->objects_per_page) 1942 add_varray_page (vp); 1943 1944 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1945 aux_ptr->type = aux_tir; 1946 aux_ptr->data = aux; 1947 1948 ret = vp->num_allocated++; 1949 1950 /* Add bitfield length if it exists. 1951 1952 NOTE: Mips documentation claims bitfield goes at the end of the 1953 AUX record, but the DECstation compiler emits it here. 1954 (This would only make a difference for enum bitfields.) 1955 1956 Also note: We use the last size given since gcc may emit 2 1957 for an enum bitfield. */ 1958 1959 if (t->bitfield) 1960 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]); 1961 1962 /* Add tag information if needed. Structure, union, and enum 1963 references add 2 aux symbols: a [file index, symbol index] 1964 pointer to the structure type, and the current file index. */ 1965 1966 if (t->basic_type == bt_Struct 1967 || t->basic_type == bt_Union 1968 || t->basic_type == bt_Enum) 1969 { 1970 symint_t file_index = t->tag_ptr->ifd; 1971 localsym_t *sym = t->tag_ptr->sym; 1972 forward_t *forward_ref = allocate_forward (); 1973 1974 if (sym != (localsym_t *) NULL) 1975 { 1976 forward_ref->next = sym->forward_ref; 1977 sym->forward_ref = forward_ref; 1978 } 1979 else 1980 { 1981 forward_ref->next = t->tag_ptr->forward_ref; 1982 t->tag_ptr->forward_ref = forward_ref; 1983 } 1984 1985 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil); 1986 forward_ref->index_ptr 1987 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1988 1989 (void) add_aux_sym_symint (file_index); 1990 forward_ref->ifd_ptr 1991 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1992 } 1993 1994 /* Add information about array bounds if they exist. */ 1995 for (i = 0; i < t->num_dims; i++) 1996 { 1997 (void) add_aux_sym_rndx (ST_RFDESCAPE, 1998 cur_file_ptr->int_type); 1999 2000 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/ 2001 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */ 2002 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/ 2003 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */ 2004 ? 0 2005 : (t->sizes[i] * 8) / t->dimensions[i]); 2006 }; 2007 2008 /* NOTE: Mips documentation claims that the bitfield width goes here. 2009 But it needs to be emitted earlier. */ 2010 2011 return ret; 2012 } 2013 2014 /* Add a tag to the tag table (unless it already exists). */ 2016 2017 static tag_t * 2018 get_tag (const char *tag, /* tag name */ 2019 localsym_t *sym, /* tag start block */ 2020 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */) 2021 { 2022 shash_t *hash_ptr; 2023 const char *err; 2024 tag_t *tag_ptr; 2025 2026 if (cur_file_ptr == (efdr_t *) NULL) 2027 as_fatal (_("no current file pointer")); 2028 2029 hash_ptr = (shash_t *) hash_find (tag_hash, tag); 2030 2031 if (hash_ptr != (shash_t *) NULL 2032 && hash_ptr->tag_ptr != (tag_t *) NULL) 2033 { 2034 tag_ptr = hash_ptr->tag_ptr; 2035 if (sym != (localsym_t *) NULL) 2036 { 2037 tag_ptr->basic_type = basic_type; 2038 tag_ptr->ifd = cur_file_ptr->file_index; 2039 tag_ptr->sym = sym; 2040 } 2041 return tag_ptr; 2042 } 2043 2044 if (hash_ptr == (shash_t *) NULL) 2045 { 2046 char *perm; 2047 2048 perm = xstrdup (tag); 2049 hash_ptr = allocate_shash (); 2050 err = hash_insert (tag_hash, perm, (char *) hash_ptr); 2051 if (err) 2052 as_fatal (_("inserting \"%s\" into tag hash table: %s"), 2053 tag, err); 2054 hash_ptr->string = perm; 2055 } 2056 2057 tag_ptr = allocate_tag (); 2058 tag_ptr->forward_ref = (forward_t *) NULL; 2059 tag_ptr->hash_ptr = hash_ptr; 2060 tag_ptr->same_name = hash_ptr->tag_ptr; 2061 tag_ptr->basic_type = basic_type; 2062 tag_ptr->sym = sym; 2063 tag_ptr->ifd = ((sym == (localsym_t *) NULL) 2064 ? (symint_t) -1 2065 : cur_file_ptr->file_index); 2066 tag_ptr->same_block = cur_tag_head->first_tag; 2067 2068 cur_tag_head->first_tag = tag_ptr; 2069 hash_ptr->tag_ptr = tag_ptr; 2070 2071 return tag_ptr; 2072 } 2073 2074 /* Add an unknown {struct, union, enum} tag. */ 2076 2077 static void 2078 add_unknown_tag (tag_t *ptag /* pointer to tag information */) 2079 { 2080 shash_t *hash_ptr = ptag->hash_ptr; 2081 char *name = hash_ptr->string; 2082 localsym_t *sym; 2083 forward_t **pf; 2084 2085 #ifdef ECOFF_DEBUG 2086 if (debug > 1) 2087 { 2088 char *agg_type = "{unknown aggregate type}"; 2089 switch (ptag->basic_type) 2090 { 2091 case bt_Struct: agg_type = "struct"; break; 2092 case bt_Union: agg_type = "union"; break; 2093 case bt_Enum: agg_type = "enum"; break; 2094 default: break; 2095 } 2096 2097 fprintf (stderr, "unknown %s %.*s found\n", agg_type, 2098 hash_ptr->len, name_start); 2099 } 2100 #endif 2101 2102 sym = add_ecoff_symbol (name, 2103 st_Block, 2104 sc_Info, 2105 (symbolS *) NULL, 2106 (bfd_vma) 0, 2107 (symint_t) 0, 2108 (symint_t) 0); 2109 2110 (void) add_ecoff_symbol (name, 2111 st_End, 2112 sc_Info, 2113 (symbolS *) NULL, 2114 (bfd_vma) 0, 2115 (symint_t) 0, 2116 (symint_t) 0); 2117 2118 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) 2119 ; 2120 *pf = ptag->forward_ref; 2121 } 2122 2123 /* Add a procedure to the current file's list of procedures, and record 2125 this is the current procedure. If AENT, then only set the requested 2126 symbol's function type. */ 2127 2128 static void 2129 add_procedure (char *func /* func name */, int aent) 2130 { 2131 varray_t *vp; 2132 proc_t *new_proc_ptr; 2133 symbolS *sym; 2134 2135 #ifdef ECOFF_DEBUG 2136 if (debug) 2137 fputc ('\n', stderr); 2138 #endif 2139 2140 /* Set the BSF_FUNCTION flag for the symbol. */ 2141 sym = symbol_find_or_make (func); 2142 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; 2143 2144 if (aent) 2145 return; 2146 2147 if (cur_file_ptr == (efdr_t *) NULL) 2148 as_fatal (_("no current file pointer")); 2149 2150 vp = &cur_file_ptr->procs; 2151 2152 if (vp->objects_last_page == vp->objects_per_page) 2153 add_varray_page (vp); 2154 2155 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++]; 2156 2157 if (first_proc_ptr == (proc_t *) NULL) 2158 first_proc_ptr = new_proc_ptr; 2159 2160 vp->num_allocated++; 2161 2162 new_proc_ptr->pdr.isym = -1; 2163 new_proc_ptr->pdr.iline = -1; 2164 new_proc_ptr->pdr.lnLow = -1; 2165 new_proc_ptr->pdr.lnHigh = -1; 2166 2167 /* Push the start of the function. */ 2168 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text, 2169 sym, (bfd_vma) 0, (symint_t) 0, 2170 (symint_t) 0); 2171 2172 ++proc_cnt; 2173 2174 /* Fill in the linenos preceding the .ent, if any. */ 2175 if (noproc_lineno != (lineno_list_t *) NULL) 2176 { 2177 lineno_list_t *l; 2178 2179 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next) 2180 l->proc = new_proc_ptr; 2181 *last_lineno_ptr = noproc_lineno; 2182 while (*last_lineno_ptr != NULL) 2183 { 2184 last_lineno = *last_lineno_ptr; 2185 last_lineno_ptr = &last_lineno->next; 2186 } 2187 noproc_lineno = (lineno_list_t *) NULL; 2188 } 2189 } 2190 2191 symbolS * 2192 ecoff_get_cur_proc_sym (void) 2193 { 2194 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL); 2195 } 2196 2197 /* Add a new filename, and set up all of the file relative 2199 virtual arrays (strings, symbols, aux syms, etc.). Record 2200 where the current file structure lives. */ 2201 2202 static void 2203 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake) 2204 { 2205 int first_ch; 2206 efdr_t *fil_ptr; 2207 2208 #ifdef ECOFF_DEBUG 2209 if (debug) 2210 fprintf (stderr, "\tfile\t%.*s\n", len, file_start); 2211 #endif 2212 2213 /* If the file name is NULL, then no .file symbol appeared, and we 2214 want to use the actual file name. */ 2215 if (file_name == (const char *) NULL) 2216 { 2217 if (first_file != (efdr_t *) NULL) 2218 as_fatal (_("fake .file after real one")); 2219 file_name = as_where ((unsigned int *) NULL); 2220 2221 /* Automatically generate ECOFF debugging information, since I 2222 think that's what other ECOFF assemblers do. We don't do 2223 this if we see a .file directive with a string, since that 2224 implies that some sort of debugging information is being 2225 provided. */ 2226 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED) 2227 debug_type = DEBUG_ECOFF; 2228 } 2229 else if (debug_type == DEBUG_UNSPECIFIED) 2230 debug_type = DEBUG_NONE; 2231 2232 #ifndef NO_LISTING 2233 if (listing) 2234 listing_source_file (file_name); 2235 #endif 2236 2237 current_stabs_filename = file_name; 2238 2239 /* If we're creating stabs, then we don't actually make a new FDR. 2240 Instead, we just create a stabs symbol. */ 2241 if (stabs_seen) 2242 { 2243 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil, 2244 symbol_new (FAKE_LABEL_NAME, now_seg, 2245 (valueT) frag_now_fix (), 2246 frag_now), 2247 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL)); 2248 return; 2249 } 2250 2251 first_ch = *file_name; 2252 2253 /* FIXME: We can't safely merge files which have line number 2254 information (fMerge will be zero in this case). Otherwise, we 2255 get incorrect line number debugging info. See for instance 2256 ecoff_build_lineno, which will end up setting all file->fdr.* 2257 fields multiple times, resulting in incorrect debug info. In 2258 order to make this work right, all line number and symbol info 2259 for the same source file has to be adjacent in the object file, 2260 so that a single file descriptor can be used to point to them. 2261 This would require maintaining file specific lists of line 2262 numbers and symbols for each file, so that they can be merged 2263 together (or output together) when two .file pseudo-ops are 2264 merged into one file descriptor. */ 2265 2266 /* See if the file has already been created. */ 2267 for (fil_ptr = first_file; 2268 fil_ptr != (efdr_t *) NULL; 2269 fil_ptr = fil_ptr->next_file) 2270 { 2271 if (first_ch == fil_ptr->name[0] 2272 && filename_cmp (file_name, fil_ptr->name) == 0 2273 && fil_ptr->fdr.fMerge) 2274 { 2275 cur_file_ptr = fil_ptr; 2276 if (! fake) 2277 cur_file_ptr->fake = 0; 2278 break; 2279 } 2280 } 2281 2282 /* If this is a new file, create it. */ 2283 if (fil_ptr == (efdr_t *) NULL) 2284 { 2285 if (file_desc.objects_last_page == file_desc.objects_per_page) 2286 add_varray_page (&file_desc); 2287 2288 fil_ptr = cur_file_ptr = 2289 &file_desc.last->datum->file[file_desc.objects_last_page++]; 2290 *fil_ptr = init_file; 2291 2292 fil_ptr->file_index = current_file_idx++; 2293 ++file_desc.num_allocated; 2294 2295 fil_ptr->fake = fake; 2296 2297 /* Allocate the string hash table. */ 2298 fil_ptr->str_hash = hash_new (); 2299 2300 /* Make sure 0 byte in string table is null */ 2301 add_string (&fil_ptr->strings, 2302 fil_ptr->str_hash, 2303 "", 2304 (shash_t **)0); 2305 2306 if (strlen (file_name) > PAGE_USIZE - 2) 2307 as_fatal (_("filename goes over one page boundary")); 2308 2309 /* Push the start of the filename. We assume that the filename 2310 will be stored at string offset 1. */ 2311 (void) add_ecoff_symbol (file_name, st_File, sc_Text, 2312 (symbolS *) NULL, (bfd_vma) 0, 2313 (symint_t) 0, (symint_t) 0); 2314 fil_ptr->fdr.rss = 1; 2315 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1]; 2316 2317 /* Update the linked list of file descriptors. */ 2318 *last_file_ptr = fil_ptr; 2319 last_file_ptr = &fil_ptr->next_file; 2320 2321 /* Add void & int types to the file (void should be first to catch 2322 errant 0's within the index fields). */ 2323 fil_ptr->void_type = add_aux_sym_tir (&void_type_info, 2324 hash_yes, 2325 &cur_file_ptr->thash_head[0]); 2326 2327 fil_ptr->int_type = add_aux_sym_tir (&int_type_info, 2328 hash_yes, 2329 &cur_file_ptr->thash_head[0]); 2330 } 2331 } 2332 2333 /* This function is called when the assembler notices a preprocessor 2334 directive switching to a new file. This will not happen in 2335 compiler output, only in hand coded assembler. */ 2336 2337 void 2338 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED) 2339 { 2340 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0) 2341 return; 2342 add_file (name, 0, 0); 2343 2344 /* This is a hand coded assembler file, so automatically turn on 2345 debugging information. */ 2346 if (debug_type == DEBUG_UNSPECIFIED) 2347 debug_type = DEBUG_ECOFF; 2348 } 2349 2350 #ifdef ECOFF_DEBUG 2352 2353 /* Convert storage class to string. */ 2354 2355 static char * 2356 sc_to_string (storage_class) 2357 sc_t storage_class; 2358 { 2359 switch (storage_class) 2360 { 2361 case sc_Nil: return "Nil,"; 2362 case sc_Text: return "Text,"; 2363 case sc_Data: return "Data,"; 2364 case sc_Bss: return "Bss,"; 2365 case sc_Register: return "Register,"; 2366 case sc_Abs: return "Abs,"; 2367 case sc_Undefined: return "Undefined,"; 2368 case sc_CdbLocal: return "CdbLocal,"; 2369 case sc_Bits: return "Bits,"; 2370 case sc_CdbSystem: return "CdbSystem,"; 2371 case sc_RegImage: return "RegImage,"; 2372 case sc_Info: return "Info,"; 2373 case sc_UserStruct: return "UserStruct,"; 2374 case sc_SData: return "SData,"; 2375 case sc_SBss: return "SBss,"; 2376 case sc_RData: return "RData,"; 2377 case sc_Var: return "Var,"; 2378 case sc_Common: return "Common,"; 2379 case sc_SCommon: return "SCommon,"; 2380 case sc_VarRegister: return "VarRegister,"; 2381 case sc_Variant: return "Variant,"; 2382 case sc_SUndefined: return "SUndefined,"; 2383 case sc_Init: return "Init,"; 2384 case sc_Max: return "Max,"; 2385 } 2386 2387 return "???,"; 2388 } 2389 2390 #endif /* DEBUG */ 2391 2392 #ifdef ECOFF_DEBUG 2394 2395 /* Convert symbol type to string. */ 2396 2397 static char * 2398 st_to_string (symbol_type) 2399 st_t symbol_type; 2400 { 2401 switch (symbol_type) 2402 { 2403 case st_Nil: return "Nil,"; 2404 case st_Global: return "Global,"; 2405 case st_Static: return "Static,"; 2406 case st_Param: return "Param,"; 2407 case st_Local: return "Local,"; 2408 case st_Label: return "Label,"; 2409 case st_Proc: return "Proc,"; 2410 case st_Block: return "Block,"; 2411 case st_End: return "End,"; 2412 case st_Member: return "Member,"; 2413 case st_Typedef: return "Typedef,"; 2414 case st_File: return "File,"; 2415 case st_RegReloc: return "RegReloc,"; 2416 case st_Forward: return "Forward,"; 2417 case st_StaticProc: return "StaticProc,"; 2418 case st_Constant: return "Constant,"; 2419 case st_Str: return "String,"; 2420 case st_Number: return "Number,"; 2421 case st_Expr: return "Expr,"; 2422 case st_Type: return "Type,"; 2423 case st_Max: return "Max,"; 2424 } 2425 2426 return "???,"; 2427 } 2428 2429 #endif /* DEBUG */ 2430 2431 /* Parse .begin directives which have a label as the first argument 2433 which gives the location of the start of the block. */ 2434 2435 void 2436 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED) 2437 { 2438 char *name; 2439 char name_end; 2440 2441 if (cur_file_ptr == (efdr_t *) NULL) 2442 { 2443 as_warn (_(".begin directive without a preceding .file directive")); 2444 demand_empty_rest_of_line (); 2445 return; 2446 } 2447 2448 if (cur_proc_ptr == (proc_t *) NULL) 2449 { 2450 as_warn (_(".begin directive without a preceding .ent directive")); 2451 demand_empty_rest_of_line (); 2452 return; 2453 } 2454 2455 name_end = get_symbol_name (&name); 2456 2457 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text, 2458 symbol_find_or_make (name), 2459 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2460 2461 (void) restore_line_pointer (name_end); 2462 2463 /* The line number follows, but we don't use it. */ 2464 (void) get_absolute_expression (); 2465 demand_empty_rest_of_line (); 2466 } 2467 2468 /* Parse .bend directives which have a label as the first argument 2470 which gives the location of the end of the block. */ 2471 2472 void 2473 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED) 2474 { 2475 char *name; 2476 char name_end; 2477 symbolS *endsym; 2478 2479 if (cur_file_ptr == (efdr_t *) NULL) 2480 { 2481 as_warn (_(".bend directive without a preceding .file directive")); 2482 demand_empty_rest_of_line (); 2483 return; 2484 } 2485 2486 if (cur_proc_ptr == (proc_t *) NULL) 2487 { 2488 as_warn (_(".bend directive without a preceding .ent directive")); 2489 demand_empty_rest_of_line (); 2490 return; 2491 } 2492 2493 name_end = get_symbol_name (&name); 2494 2495 /* The value is the distance between the .bend directive and the 2496 corresponding symbol. We fill in the offset when we write out 2497 the symbol. */ 2498 endsym = symbol_find (name); 2499 if (endsym == (symbolS *) NULL) 2500 as_warn (_(".bend directive names unknown symbol")); 2501 else 2502 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym, 2503 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2504 2505 restore_line_pointer (name_end); 2506 2507 /* The line number follows, but we don't use it. */ 2508 (void) get_absolute_expression (); 2509 demand_empty_rest_of_line (); 2510 } 2511 2512 /* COFF debugging information is provided as a series of directives 2514 (.def, .scl, etc.). We build up information as we read the 2515 directives in the following static variables, and file it away when 2516 we reach the .endef directive. */ 2517 static char *coff_sym_name; 2518 static type_info_t coff_type; 2519 static sc_t coff_storage_class; 2520 static st_t coff_symbol_typ; 2521 static int coff_is_function; 2522 static char *coff_tag; 2523 static valueT coff_value; 2524 static symbolS *coff_sym_value; 2525 static bfd_vma coff_sym_addend; 2526 static int coff_inside_enumeration; 2527 2528 /* Handle a .def directive: start defining a symbol. */ 2529 2530 void 2531 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED) 2532 { 2533 char *name; 2534 char name_end; 2535 2536 ecoff_debugging_seen = 1; 2537 2538 SKIP_WHITESPACE (); 2539 2540 name_end = get_symbol_name (&name); 2541 2542 if (coff_sym_name != (char *) NULL) 2543 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored")); 2544 else if (*name == '\0') 2545 as_warn (_("empty symbol name in .def; ignored")); 2546 else 2547 { 2548 if (coff_sym_name != (char *) NULL) 2549 free (coff_sym_name); 2550 if (coff_tag != (char *) NULL) 2551 free (coff_tag); 2552 2553 coff_sym_name = xstrdup (name); 2554 coff_type = type_info_init; 2555 coff_storage_class = sc_Nil; 2556 coff_symbol_typ = st_Nil; 2557 coff_is_function = 0; 2558 coff_tag = (char *) NULL; 2559 coff_value = 0; 2560 coff_sym_value = (symbolS *) NULL; 2561 coff_sym_addend = 0; 2562 } 2563 2564 restore_line_pointer (name_end); 2565 2566 demand_empty_rest_of_line (); 2567 } 2568 2569 /* Handle a .dim directive, used to give dimensions for an array. The 2570 arguments are comma separated numbers. mips-tfile assumes that 2571 there will not be more than 6 dimensions, and gdb won't read any 2572 more than that anyhow, so I will also make that assumption. */ 2573 2574 void 2575 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED) 2576 { 2577 int dimens[N_TQ]; 2578 int i; 2579 2580 if (coff_sym_name == (char *) NULL) 2581 { 2582 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored")); 2583 demand_empty_rest_of_line (); 2584 return; 2585 } 2586 2587 for (i = 0; i < N_TQ; i++) 2588 { 2589 SKIP_WHITESPACE (); 2590 dimens[i] = get_absolute_expression (); 2591 if (*input_line_pointer == ',') 2592 ++input_line_pointer; 2593 else 2594 { 2595 if (*input_line_pointer != '\n' 2596 && *input_line_pointer != ';') 2597 as_warn (_("badly formed .dim directive")); 2598 break; 2599 } 2600 } 2601 2602 if (i == N_TQ) 2603 --i; 2604 2605 /* The dimensions are stored away in reverse order. */ 2606 for (; i >= 0; i--) 2607 { 2608 if (coff_type.num_dims >= N_TQ) 2609 { 2610 as_warn (_("too many .dim entries")); 2611 break; 2612 } 2613 coff_type.dimensions[coff_type.num_dims] = dimens[i]; 2614 ++coff_type.num_dims; 2615 } 2616 2617 demand_empty_rest_of_line (); 2618 } 2619 2620 /* Handle a .scl directive, which sets the COFF storage class of the 2621 symbol. */ 2622 2623 void 2624 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED) 2625 { 2626 long val; 2627 2628 if (coff_sym_name == (char *) NULL) 2629 { 2630 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored")); 2631 demand_empty_rest_of_line (); 2632 return; 2633 } 2634 2635 val = get_absolute_expression (); 2636 2637 coff_symbol_typ = map_coff_sym_type[val]; 2638 coff_storage_class = map_coff_storage[val]; 2639 2640 demand_empty_rest_of_line (); 2641 } 2642 2643 /* Handle a .size directive. For some reason mips-tfile.c thinks that 2644 .size can have multiple arguments. We humor it, although gcc will 2645 never generate more than one argument. */ 2646 2647 void 2648 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED) 2649 { 2650 int sizes[N_TQ]; 2651 int i; 2652 2653 if (coff_sym_name == (char *) NULL) 2654 { 2655 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored")); 2656 demand_empty_rest_of_line (); 2657 return; 2658 } 2659 2660 for (i = 0; i < N_TQ; i++) 2661 { 2662 SKIP_WHITESPACE (); 2663 sizes[i] = get_absolute_expression (); 2664 if (*input_line_pointer == ',') 2665 ++input_line_pointer; 2666 else 2667 { 2668 if (*input_line_pointer != '\n' 2669 && *input_line_pointer != ';') 2670 as_warn (_("badly formed .size directive")); 2671 break; 2672 } 2673 } 2674 2675 if (i == N_TQ) 2676 --i; 2677 2678 /* The sizes are stored away in reverse order. */ 2679 for (; i >= 0; i--) 2680 { 2681 if (coff_type.num_sizes >= N_TQ) 2682 { 2683 as_warn (_("too many .size entries")); 2684 break; 2685 } 2686 coff_type.sizes[coff_type.num_sizes] = sizes[i]; 2687 ++coff_type.num_sizes; 2688 } 2689 2690 demand_empty_rest_of_line (); 2691 } 2692 2693 /* Handle the .type directive, which gives the COFF type of the 2694 symbol. */ 2695 2696 void 2697 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED) 2698 { 2699 long val; 2700 tq_t *tq_ptr; 2701 tq_t *tq_shft; 2702 2703 if (coff_sym_name == (char *) NULL) 2704 { 2705 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored")); 2706 demand_empty_rest_of_line (); 2707 return; 2708 } 2709 2710 val = get_absolute_expression (); 2711 2712 coff_type.orig_type = BTYPE (val); 2713 coff_type.basic_type = map_coff_types[coff_type.orig_type]; 2714 2715 tq_ptr = &coff_type.type_qualifiers[N_TQ]; 2716 while (val & ~N_BTMASK) 2717 { 2718 if (tq_ptr == &coff_type.type_qualifiers[0]) 2719 { 2720 /* FIXME: We could handle this by setting the continued bit. 2721 There would still be a limit: the .type argument can not 2722 be infinite. */ 2723 as_warn (_("the type of %s is too complex; it will be simplified"), 2724 coff_sym_name); 2725 break; 2726 } 2727 if (ISPTR (val)) 2728 *--tq_ptr = tq_Ptr; 2729 else if (ISFCN (val)) 2730 *--tq_ptr = tq_Proc; 2731 else if (ISARY (val)) 2732 *--tq_ptr = tq_Array; 2733 else 2734 as_fatal (_("Unrecognized .type argument")); 2735 2736 val = DECREF (val); 2737 } 2738 2739 tq_shft = &coff_type.type_qualifiers[0]; 2740 while (tq_ptr != &coff_type.type_qualifiers[N_TQ]) 2741 *tq_shft++ = *tq_ptr++; 2742 2743 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc) 2744 { 2745 /* If this is a function, ignore it, so that we don't get two 2746 entries (one from the .ent, and one for the .def that 2747 precedes it). Save the type information so that the end 2748 block can properly add it after the begin block index. For 2749 MIPS knows what reason, we must strip off the function type 2750 at this point. */ 2751 coff_is_function = 1; 2752 tq_shft[-1] = tq_Nil; 2753 } 2754 2755 while (tq_shft != &coff_type.type_qualifiers[N_TQ]) 2756 *tq_shft++ = tq_Nil; 2757 2758 demand_empty_rest_of_line (); 2759 } 2760 2761 /* Handle the .tag directive, which gives the name of a structure, 2762 union or enum. */ 2763 2764 void 2765 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED) 2766 { 2767 char *name; 2768 char name_end; 2769 2770 if (coff_sym_name == (char *) NULL) 2771 { 2772 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored")); 2773 demand_empty_rest_of_line (); 2774 return; 2775 } 2776 2777 name_end = get_symbol_name (&name); 2778 2779 coff_tag = xstrdup (name); 2780 2781 (void) restore_line_pointer (name_end); 2782 2783 demand_empty_rest_of_line (); 2784 } 2785 2786 /* Handle the .val directive, which gives the value of the symbol. It 2787 may be the name of a static or global symbol. */ 2788 2789 void 2790 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED) 2791 { 2792 expressionS exp; 2793 2794 if (coff_sym_name == (char *) NULL) 2795 { 2796 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored")); 2797 demand_empty_rest_of_line (); 2798 return; 2799 } 2800 2801 expression (&exp); 2802 if (exp.X_op != O_constant && exp.X_op != O_symbol) 2803 { 2804 as_bad (_(".val expression is too complex")); 2805 demand_empty_rest_of_line (); 2806 return; 2807 } 2808 2809 if (exp.X_op == O_constant) 2810 coff_value = exp.X_add_number; 2811 else 2812 { 2813 coff_sym_value = exp.X_add_symbol; 2814 coff_sym_addend = exp.X_add_number; 2815 } 2816 2817 demand_empty_rest_of_line (); 2818 } 2819 2820 /* Handle the .endef directive, which terminates processing of COFF 2821 debugging information for a symbol. */ 2822 2823 void 2824 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED) 2825 { 2826 char *name; 2827 symint_t indx; 2828 localsym_t *sym; 2829 2830 demand_empty_rest_of_line (); 2831 2832 if (coff_sym_name == (char *) NULL) 2833 { 2834 as_warn (_(".endef pseudo-op used before .def; ignored")); 2835 return; 2836 } 2837 2838 name = coff_sym_name; 2839 coff_sym_name = (char *) NULL; 2840 2841 /* If the symbol is a static or external, we have already gotten the 2842 appropriate type and class, so make sure we don't override those 2843 values. This is needed because there are some type and classes 2844 that are not in COFF, such as short data, etc. */ 2845 if (coff_sym_value != (symbolS *) NULL) 2846 { 2847 coff_symbol_typ = st_Nil; 2848 coff_storage_class = sc_Nil; 2849 } 2850 2851 coff_type.extra_sizes = coff_tag != (char *) NULL; 2852 if (coff_type.num_dims > 0) 2853 { 2854 int diff = coff_type.num_dims - coff_type.num_sizes; 2855 int i = coff_type.num_dims - 1; 2856 int j; 2857 2858 if (coff_type.num_sizes != 1 || diff < 0) 2859 { 2860 as_warn (_("bad COFF debugging information")); 2861 return; 2862 } 2863 2864 /* If this is an array, make sure the same number of dimensions 2865 and sizes were passed, creating extra sizes for multiply 2866 dimensioned arrays if not passed. */ 2867 coff_type.extra_sizes = 0; 2868 if (diff) 2869 { 2870 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1; 2871 while (j >= 0) 2872 { 2873 coff_type.sizes[j] = (((j - diff) >= 0) 2874 ? coff_type.sizes[j - diff] 2875 : 0); 2876 j--; 2877 } 2878 2879 coff_type.num_sizes = i + 1; 2880 for (i--; i >= 0; i--) 2881 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0 2882 ? 0 2883 : (coff_type.sizes[i + 1] 2884 / coff_type.dimensions[i + 1])); 2885 } 2886 } 2887 else if (coff_symbol_typ == st_Member 2888 && coff_type.num_sizes - coff_type.extra_sizes == 1) 2889 { 2890 /* Is this a bitfield? This is indicated by a structure member 2891 having a size field that isn't an array. */ 2892 coff_type.bitfield = 1; 2893 } 2894 2895 /* Except for enumeration members & begin/ending of scopes, put the 2896 type word in the aux. symbol table. */ 2897 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End) 2898 indx = 0; 2899 else if (coff_inside_enumeration) 2900 indx = cur_file_ptr->void_type; 2901 else 2902 { 2903 if (coff_type.basic_type == bt_Struct 2904 || coff_type.basic_type == bt_Union 2905 || coff_type.basic_type == bt_Enum) 2906 { 2907 if (coff_tag == (char *) NULL) 2908 { 2909 as_warn (_("no tag specified for %s"), name); 2910 return; 2911 } 2912 2913 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL, 2914 coff_type.basic_type); 2915 } 2916 2917 if (coff_is_function) 2918 { 2919 last_func_type_info = coff_type; 2920 last_func_sym_value = coff_sym_value; 2921 return; 2922 } 2923 2924 indx = add_aux_sym_tir (&coff_type, 2925 hash_yes, 2926 &cur_file_ptr->thash_head[0]); 2927 } 2928 2929 /* Do any last minute adjustments that are necessary. */ 2930 switch (coff_symbol_typ) 2931 { 2932 default: 2933 break; 2934 2935 /* For the beginning of structs, unions, and enumerations, the 2936 size info needs to be passed in the value field. */ 2937 case st_Block: 2938 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes 2939 != 1) 2940 { 2941 as_warn (_("bad COFF debugging information")); 2942 return; 2943 } 2944 else 2945 coff_value = coff_type.sizes[0]; 2946 2947 coff_inside_enumeration = (coff_type.orig_type == T_ENUM); 2948 break; 2949 2950 /* For the end of structs, unions, and enumerations, omit the 2951 name which is always ".eos". This needs to be done last, so 2952 that any error reporting above gives the correct name. */ 2953 case st_End: 2954 free (name); 2955 name = (char *) NULL; 2956 coff_value = 0; 2957 coff_inside_enumeration = 0; 2958 break; 2959 2960 /* Members of structures and unions that aren't bitfields, need 2961 to adjust the value from a byte offset to a bit offset. 2962 Members of enumerations do not have the value adjusted, and 2963 can be distinguished by indx == indexNil. For enumerations, 2964 update the maximum enumeration value. */ 2965 case st_Member: 2966 if (! coff_type.bitfield && ! coff_inside_enumeration) 2967 coff_value *= 8; 2968 2969 break; 2970 } 2971 2972 /* Add the symbol. */ 2973 sym = add_ecoff_symbol (name, 2974 coff_symbol_typ, 2975 coff_storage_class, 2976 coff_sym_value, 2977 coff_sym_addend, 2978 (symint_t) coff_value, 2979 indx); 2980 2981 /* deal with struct, union, and enum tags. */ 2982 if (coff_symbol_typ == st_Block) 2983 { 2984 /* Create or update the tag information. */ 2985 tag_t *tag_ptr = get_tag (name, 2986 sym, 2987 coff_type.basic_type); 2988 forward_t **pf; 2989 2990 /* Remember any forward references. */ 2991 for (pf = &sym->forward_ref; 2992 *pf != (forward_t *) NULL; 2993 pf = &(*pf)->next) 2994 ; 2995 *pf = tag_ptr->forward_ref; 2996 tag_ptr->forward_ref = (forward_t *) NULL; 2997 } 2998 } 2999 3000 /* Parse .end directives. */ 3002 3003 void 3004 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED) 3005 { 3006 char *name; 3007 char name_end; 3008 symbolS *ent; 3009 3010 if (cur_file_ptr == (efdr_t *) NULL) 3011 { 3012 as_warn (_(".end directive without a preceding .file directive")); 3013 demand_empty_rest_of_line (); 3014 return; 3015 } 3016 3017 if (cur_proc_ptr == (proc_t *) NULL) 3018 { 3019 as_warn (_(".end directive without a preceding .ent directive")); 3020 demand_empty_rest_of_line (); 3021 return; 3022 } 3023 3024 name_end = get_symbol_name (&name); 3025 3026 if (name == input_line_pointer) 3027 { 3028 as_warn (_(".end directive has no name")); 3029 (void) restore_line_pointer (name_end); 3030 demand_empty_rest_of_line (); 3031 return; 3032 } 3033 3034 /* The value is the distance between the .end directive and the 3035 corresponding symbol. We create a fake symbol to hold the 3036 current location, and put in the offset when we write out the 3037 symbol. */ 3038 ent = symbol_find (name); 3039 if (ent == (symbolS *) NULL) 3040 as_warn (_(".end directive names unknown symbol")); 3041 else 3042 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, 3043 symbol_new (FAKE_LABEL_NAME, now_seg, 3044 (valueT) frag_now_fix (), 3045 frag_now), 3046 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 3047 3048 #ifdef md_flush_pending_output 3049 md_flush_pending_output (); 3050 #endif 3051 3052 cur_proc_ptr = (proc_t *) NULL; 3053 3054 (void) restore_line_pointer (name_end); 3055 demand_empty_rest_of_line (); 3056 } 3057 3058 /* Parse .ent directives. */ 3060 3061 void 3062 ecoff_directive_ent (int aent) 3063 { 3064 char *name; 3065 char name_end; 3066 3067 if (cur_file_ptr == (efdr_t *) NULL) 3068 add_file ((const char *) NULL, 0, 1); 3069 3070 if (!aent && cur_proc_ptr != (proc_t *) NULL) 3071 { 3072 as_warn (_("second .ent directive found before .end directive")); 3073 demand_empty_rest_of_line (); 3074 return; 3075 } 3076 3077 name_end = get_symbol_name (&name); 3078 3079 if (name == input_line_pointer) 3080 { 3081 as_warn (_("%s directive has no name"), aent ? ".aent" : ".ent"); 3082 (void) restore_line_pointer (name_end); 3083 demand_empty_rest_of_line (); 3084 return; 3085 } 3086 3087 add_procedure (name, aent); 3088 3089 (void) restore_line_pointer (name_end); 3090 3091 /* The .ent directive is sometimes followed by a number. I'm not 3092 really sure what the number means. I don't see any way to store 3093 the information in the PDR. The Irix 4 assembler seems to ignore 3094 the information. */ 3095 SKIP_WHITESPACE (); 3096 if (*input_line_pointer == ',') 3097 { 3098 ++input_line_pointer; 3099 SKIP_WHITESPACE (); 3100 } 3101 if (ISDIGIT (*input_line_pointer) 3102 || *input_line_pointer == '-') 3103 (void) get_absolute_expression (); 3104 3105 demand_empty_rest_of_line (); 3106 } 3107 3108 /* Parse .extern directives. */ 3110 3111 void 3112 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED) 3113 { 3114 char *name; 3115 int c; 3116 symbolS *symbolp; 3117 valueT size; 3118 3119 c = get_symbol_name (&name); 3120 symbolp = symbol_find_or_make (name); 3121 (void) restore_line_pointer (c); 3122 3123 S_SET_EXTERNAL (symbolp); 3124 3125 if (*input_line_pointer == ',') 3126 ++input_line_pointer; 3127 size = get_absolute_expression (); 3128 3129 symbol_get_obj (symbolp)->ecoff_extern_size = size; 3130 } 3131 3132 /* Parse .file directives. */ 3134 3135 void 3136 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED) 3137 { 3138 int indx; 3139 char *name; 3140 int len; 3141 3142 if (cur_proc_ptr != (proc_t *) NULL) 3143 { 3144 as_warn (_("no way to handle .file within .ent/.end section")); 3145 demand_empty_rest_of_line (); 3146 return; 3147 } 3148 3149 indx = (int) get_absolute_expression (); 3150 3151 /* FIXME: we don't have to save the name here. */ 3152 name = demand_copy_C_string (&len); 3153 3154 add_file (name, indx - 1, 0); 3155 3156 demand_empty_rest_of_line (); 3157 } 3158 3159 /* Parse .fmask directives. */ 3161 3162 void 3163 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED) 3164 { 3165 long val; 3166 3167 if (cur_proc_ptr == (proc_t *) NULL) 3168 { 3169 as_warn (_(".fmask outside of .ent")); 3170 demand_empty_rest_of_line (); 3171 return; 3172 } 3173 3174 if (get_absolute_expression_and_terminator (&val) != ',') 3175 { 3176 as_warn (_("bad .fmask directive")); 3177 --input_line_pointer; 3178 demand_empty_rest_of_line (); 3179 return; 3180 } 3181 3182 cur_proc_ptr->pdr.fregmask = val; 3183 cur_proc_ptr->pdr.fregoffset = get_absolute_expression (); 3184 3185 demand_empty_rest_of_line (); 3186 } 3187 3188 /* Parse .frame directives. */ 3190 3191 void 3192 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED) 3193 { 3194 long val; 3195 3196 if (cur_proc_ptr == (proc_t *) NULL) 3197 { 3198 as_warn (_(".frame outside of .ent")); 3199 demand_empty_rest_of_line (); 3200 return; 3201 } 3202 3203 cur_proc_ptr->pdr.framereg = tc_get_register (1); 3204 3205 SKIP_WHITESPACE (); 3206 if (*input_line_pointer++ != ',' 3207 || get_absolute_expression_and_terminator (&val) != ',') 3208 { 3209 as_warn (_("bad .frame directive")); 3210 --input_line_pointer; 3211 demand_empty_rest_of_line (); 3212 return; 3213 } 3214 3215 cur_proc_ptr->pdr.frameoffset = val; 3216 3217 cur_proc_ptr->pdr.pcreg = tc_get_register (0); 3218 3219 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to 3220 Sandro. I don't yet know where this value should be stored, if 3221 anywhere. Don't call demand_empty_rest_of_line (). */ 3222 s_ignore (42); 3223 } 3224 3225 /* Parse .mask directives. */ 3227 3228 void 3229 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED) 3230 { 3231 long val; 3232 3233 if (cur_proc_ptr == (proc_t *) NULL) 3234 { 3235 as_warn (_(".mask outside of .ent")); 3236 demand_empty_rest_of_line (); 3237 return; 3238 } 3239 3240 if (get_absolute_expression_and_terminator (&val) != ',') 3241 { 3242 as_warn (_("bad .mask directive")); 3243 --input_line_pointer; 3244 demand_empty_rest_of_line (); 3245 return; 3246 } 3247 3248 cur_proc_ptr->pdr.regmask = val; 3249 cur_proc_ptr->pdr.regoffset = get_absolute_expression (); 3250 3251 demand_empty_rest_of_line (); 3252 } 3253 3254 /* Parse .loc directives. */ 3256 3257 void 3258 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED) 3259 { 3260 lineno_list_t *list; 3261 symint_t lineno; 3262 3263 if (cur_file_ptr == (efdr_t *) NULL) 3264 { 3265 as_warn (_(".loc before .file")); 3266 demand_empty_rest_of_line (); 3267 return; 3268 } 3269 3270 if (now_seg != text_section) 3271 { 3272 as_warn (_(".loc outside of .text")); 3273 demand_empty_rest_of_line (); 3274 return; 3275 } 3276 3277 /* Skip the file number. */ 3278 SKIP_WHITESPACE (); 3279 get_absolute_expression (); 3280 SKIP_WHITESPACE (); 3281 3282 lineno = get_absolute_expression (); 3283 3284 #ifndef NO_LISTING 3285 if (listing) 3286 listing_source_line (lineno); 3287 #endif 3288 3289 /* If we're building stabs, then output a special label rather than 3290 ECOFF line number info. */ 3291 if (stabs_seen) 3292 { 3293 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text, 3294 symbol_new (FAKE_LABEL_NAME, now_seg, 3295 (valueT) frag_now_fix (), 3296 frag_now), 3297 (bfd_vma) 0, 0, lineno); 3298 return; 3299 } 3300 3301 list = allocate_lineno_list (); 3302 3303 list->next = (lineno_list_t *) NULL; 3304 list->file = cur_file_ptr; 3305 list->proc = cur_proc_ptr; 3306 list->frag = frag_now; 3307 list->paddr = frag_now_fix (); 3308 list->lineno = lineno; 3309 3310 /* We don't want to merge files which have line numbers. */ 3311 cur_file_ptr->fdr.fMerge = 0; 3312 3313 /* A .loc directive will sometimes appear before a .ent directive, 3314 which means that cur_proc_ptr will be NULL here. Arrange to 3315 patch this up. */ 3316 if (cur_proc_ptr == (proc_t *) NULL) 3317 { 3318 lineno_list_t **pl; 3319 3320 pl = &noproc_lineno; 3321 while (*pl != (lineno_list_t *) NULL) 3322 pl = &(*pl)->next; 3323 *pl = list; 3324 } 3325 else 3326 { 3327 last_lineno = list; 3328 *last_lineno_ptr = list; 3329 last_lineno_ptr = &list->next; 3330 } 3331 } 3332 3333 /* The MIPS assembler sometimes inserts nop instructions in the 3334 instruction stream. When this happens, we must patch up the .loc 3335 information so that it points to the instruction after the nop. */ 3336 3337 void 3338 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset) 3339 { 3340 if (last_lineno != NULL 3341 && last_lineno->frag == old_frag 3342 && last_lineno->paddr == old_frag_offset) 3343 { 3344 last_lineno->frag = frag_now; 3345 last_lineno->paddr = frag_now_fix (); 3346 } 3347 } 3348 3349 /* Make sure the @stabs symbol is emitted. */ 3351 3352 static void 3353 mark_stabs (int ignore ATTRIBUTE_UNUSED) 3354 { 3355 if (! stabs_seen) 3356 { 3357 /* Add a dummy @stabs symbol. */ 3358 stabs_seen = 1; 3359 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info, 3360 (symbolS *) NULL, 3361 (bfd_vma) 0, (symint_t) -1, 3362 ECOFF_MARK_STAB (0)); 3363 } 3364 } 3365 3366 /* Parse .weakext directives. */ 3368 #ifndef TC_MIPS 3369 /* For TC_MIPS use the version in tc-mips.c. */ 3370 void 3371 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED) 3372 { 3373 char *name; 3374 int c; 3375 symbolS *symbolP; 3376 expressionS exp; 3377 3378 c = get_symbol_name (&name); 3379 symbolP = symbol_find_or_make (name); 3380 (void) restore_line_pointer (c); 3381 3382 SKIP_WHITESPACE (); 3383 3384 if (*input_line_pointer == ',') 3385 { 3386 if (S_IS_DEFINED (symbolP)) 3387 { 3388 as_bad (_("symbol `%s' is already defined"), 3389 S_GET_NAME (symbolP)); 3390 ignore_rest_of_line (); 3391 return; 3392 } 3393 3394 ++input_line_pointer; 3395 SKIP_WHITESPACE (); 3396 if (! is_end_of_line[(unsigned char) *input_line_pointer]) 3397 { 3398 expression (&exp); 3399 if (exp.X_op != O_symbol) 3400 { 3401 as_bad (_("bad .weakext directive")); 3402 ignore_rest_of_line (); 3403 return; 3404 } 3405 symbol_set_value_expression (symbolP, &exp); 3406 } 3407 } 3408 3409 S_SET_WEAK (symbolP); 3410 3411 demand_empty_rest_of_line (); 3412 } 3413 #endif /* not TC_MIPS */ 3414 3415 /* Handle .stabs directives. The actual parsing routine is done by a 3417 generic routine. This routine is called via OBJ_PROCESS_STAB. 3418 When this is called, input_line_pointer will be pointing at the 3419 value field of the stab. 3420 3421 .stabs directives have five fields: 3422 "string" a string, encoding the type information. 3423 code a numeric code, defined in <stab.h> 3424 0 a zero 3425 desc a zero or line number 3426 value a numeric value or an address. 3427 3428 If the value is relocatable, we transform this into: 3429 iss points as an index into string space 3430 value value from lookup of the name 3431 st st from lookup of the name 3432 sc sc from lookup of the name 3433 index code|CODE_MASK 3434 3435 If the value is not relocatable, we transform this into: 3436 iss points as an index into string space 3437 value value 3438 st st_Nil 3439 sc sc_Nil 3440 index code|CODE_MASK 3441 3442 .stabn directives have four fields (string is null): 3443 code a numeric code, defined in <stab.h> 3444 0 a zero 3445 desc a zero or a line number 3446 value a numeric value or an address. */ 3447 3448 void 3449 ecoff_stab (segT sec ATTRIBUTE_UNUSED, 3450 int what, 3451 const char *string, 3452 int type, 3453 int other, 3454 int desc) 3455 { 3456 efdr_t *save_file_ptr = cur_file_ptr; 3457 symbolS *sym; 3458 symint_t value; 3459 bfd_vma addend; 3460 st_t st; 3461 sc_t sc; 3462 symint_t indx; 3463 localsym_t *hold = NULL; 3464 3465 ecoff_debugging_seen = 1; 3466 3467 /* We don't handle .stabd. */ 3468 if (what != 's' && what != 'n') 3469 { 3470 as_bad (_(".stab%c is not supported"), what); 3471 return; 3472 } 3473 3474 /* A .stabn uses a null name, not an empty string. */ 3475 if (what == 'n') 3476 string = NULL; 3477 3478 /* We ignore the other field. */ 3479 if (other != 0) 3480 as_warn (_(".stab%c: ignoring non-zero other field"), what); 3481 3482 /* Make sure we have a current file. */ 3483 if (cur_file_ptr == (efdr_t *) NULL) 3484 { 3485 add_file ((const char *) NULL, 0, 1); 3486 save_file_ptr = cur_file_ptr; 3487 } 3488 3489 /* For stabs in ECOFF, the first symbol must be @stabs. This is a 3490 signal to gdb. */ 3491 if (stabs_seen == 0) 3492 mark_stabs (0); 3493 3494 /* Line number stabs are handled differently, since they have two 3495 values, the line number and the address of the label. We use the 3496 index field (aka desc) to hold the line number, and the value 3497 field to hold the address. The symbol type is st_Label, which 3498 should be different from the other stabs, so that gdb can 3499 recognize it. */ 3500 if (type == N_SLINE) 3501 { 3502 SYMR dummy_symr; 3503 char *name; 3504 char name_end; 3505 3506 #ifndef NO_LISTING 3507 if (listing) 3508 listing_source_line ((unsigned int) desc); 3509 #endif 3510 3511 dummy_symr.index = desc; 3512 if (dummy_symr.index != desc) 3513 { 3514 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"), 3515 desc, what); 3516 return; 3517 } 3518 3519 name_end = get_symbol_name (&name); 3520 sym = symbol_find_or_make (name); 3521 (void) restore_line_pointer (name_end); 3522 3523 value = 0; 3524 addend = 0; 3525 st = st_Label; 3526 sc = sc_Text; 3527 indx = desc; 3528 } 3529 else 3530 { 3531 #ifndef NO_LISTING 3532 if (listing && (type == N_SO || type == N_SOL)) 3533 listing_source_file (string); 3534 #endif 3535 3536 if (ISDIGIT (*input_line_pointer) 3537 || *input_line_pointer == '-' 3538 || *input_line_pointer == '+') 3539 { 3540 st = st_Nil; 3541 sc = sc_Nil; 3542 sym = (symbolS *) NULL; 3543 value = get_absolute_expression (); 3544 addend = 0; 3545 } 3546 else if (! is_name_beginner ((unsigned char) *input_line_pointer)) 3547 { 3548 as_warn (_("illegal .stab%c directive, bad character"), what); 3549 return; 3550 } 3551 else 3552 { 3553 expressionS exp; 3554 3555 sc = sc_Nil; 3556 st = st_Nil; 3557 3558 expression (&exp); 3559 if (exp.X_op == O_constant) 3560 { 3561 sym = NULL; 3562 value = exp.X_add_number; 3563 addend = 0; 3564 } 3565 else if (exp.X_op == O_symbol) 3566 { 3567 sym = exp.X_add_symbol; 3568 value = 0; 3569 addend = exp.X_add_number; 3570 } 3571 else 3572 { 3573 sym = make_expr_symbol (&exp); 3574 value = 0; 3575 addend = 0; 3576 } 3577 } 3578 3579 indx = ECOFF_MARK_STAB (type); 3580 } 3581 3582 /* Don't store the stabs symbol we are creating as the type of the 3583 ECOFF symbol. We want to compute the type of the ECOFF symbol 3584 independently. */ 3585 if (sym != (symbolS *) NULL) 3586 hold = symbol_get_obj (sym)->ecoff_symbol; 3587 3588 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx); 3589 3590 if (sym != (symbolS *) NULL) 3591 symbol_get_obj (sym)->ecoff_symbol = hold; 3592 3593 /* Restore normal file type. */ 3594 cur_file_ptr = save_file_ptr; 3595 } 3596 3597 /* Frob an ECOFF symbol. Small common symbols go into a special 3599 .scommon section rather than bfd_com_section. */ 3600 3601 void 3602 ecoff_frob_symbol (symbolS *sym) 3603 { 3604 if (S_IS_COMMON (sym) 3605 && S_GET_VALUE (sym) > 0 3606 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput)) 3607 { 3608 static asection scom_section; 3609 static asymbol scom_symbol; 3610 3611 /* We must construct a fake section similar to bfd_com_section 3612 but with the name .scommon. */ 3613 if (scom_section.name == NULL) 3614 { 3615 scom_section = *bfd_com_section_ptr; 3616 scom_section.name = ".scommon"; 3617 scom_section.output_section = &scom_section; 3618 scom_section.symbol = &scom_symbol; 3619 scom_section.symbol_ptr_ptr = &scom_section.symbol; 3620 scom_symbol = *bfd_com_section_ptr->symbol; 3621 scom_symbol.name = ".scommon"; 3622 scom_symbol.section = &scom_section; 3623 } 3624 S_SET_SEGMENT (sym, &scom_section); 3625 } 3626 3627 /* Double check weak symbols. */ 3628 if (S_IS_WEAK (sym)) 3629 { 3630 if (S_IS_COMMON (sym)) 3631 as_bad (_("symbol `%s' can not be both weak and common"), 3632 S_GET_NAME (sym)); 3633 } 3634 } 3635 3636 /* Add bytes to the symbolic information buffer. */ 3638 3639 static char * 3640 ecoff_add_bytes (char **buf, 3641 char **bufend, 3642 char *bufptr, 3643 unsigned long need) 3644 { 3645 unsigned long at; 3646 unsigned long want; 3647 3648 at = bufptr - *buf; 3649 need -= *bufend - bufptr; 3650 if (need < PAGE_SIZE) 3651 need = PAGE_SIZE; 3652 want = (*bufend - *buf) + need; 3653 *buf = XRESIZEVEC (char, *buf, want); 3654 *bufend = *buf + want; 3655 return *buf + at; 3656 } 3657 3658 /* Adjust the symbolic information buffer to the alignment required 3659 for the ECOFF target debugging information. */ 3660 3661 static unsigned long 3662 ecoff_padding_adjust (const struct ecoff_debug_swap *backend, 3663 char **buf, 3664 char **bufend, 3665 unsigned long offset, 3666 char **bufptrptr) 3667 { 3668 bfd_size_type align; 3669 3670 align = backend->debug_align; 3671 if ((offset & (align - 1)) != 0) 3672 { 3673 unsigned long add; 3674 3675 add = align - (offset & (align - 1)); 3676 if ((unsigned long) (*bufend - (*buf + offset)) < add) 3677 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add); 3678 memset (*buf + offset, 0, add); 3679 offset += add; 3680 if (bufptrptr != (char **) NULL) 3681 *bufptrptr = *buf + offset; 3682 } 3683 3684 return offset; 3685 } 3686 3687 /* Build the line number information. */ 3688 3689 static unsigned long 3690 ecoff_build_lineno (const struct ecoff_debug_swap *backend, 3691 char **buf, 3692 char **bufend, 3693 unsigned long offset, 3694 long *linecntptr) 3695 { 3696 char *bufptr; 3697 lineno_list_t *l; 3698 lineno_list_t *last; 3699 efdr_t *file; 3700 proc_t *proc; 3701 unsigned long c; 3702 long iline; 3703 long totcount; 3704 lineno_list_t first; 3705 lineno_list_t *local_first_lineno = first_lineno; 3706 3707 if (linecntptr != (long *) NULL) 3708 *linecntptr = 0; 3709 3710 bufptr = *buf + offset; 3711 3712 file = (efdr_t *) NULL; 3713 proc = (proc_t *) NULL; 3714 last = (lineno_list_t *) NULL; 3715 c = offset; 3716 iline = 0; 3717 totcount = 0; 3718 3719 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to 3720 remove this code. */ 3721 /* For some reason the address of the first procedure is ignored 3722 when reading line numbers. This doesn't matter if the address of 3723 the first procedure is 0, but when gcc is generating MIPS 3724 embedded PIC code, it will put strings in the .text section 3725 before the first procedure. We cope by inserting a dummy line if 3726 the address of the first procedure is not 0. Hopefully this 3727 won't screw things up too badly. 3728 3729 Don't do this for ECOFF assembly source line numbers. They work 3730 without this extra attention. */ 3731 if (debug_type != DEBUG_ECOFF 3732 && first_proc_ptr != (proc_t *) NULL 3733 && local_first_lineno != (lineno_list_t *) NULL 3734 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym) 3735 + bfd_get_section_vma (stdoutput, 3736 S_GET_SEGMENT (first_proc_ptr->sym->as_sym))) 3737 != 0)) 3738 { 3739 first.file = local_first_lineno->file; 3740 first.proc = local_first_lineno->proc; 3741 first.frag = &zero_address_frag; 3742 first.paddr = 0; 3743 first.lineno = 0; 3744 3745 first.next = local_first_lineno; 3746 local_first_lineno = &first; 3747 } 3748 3749 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next) 3750 { 3751 long count; 3752 long delta; 3753 3754 /* Get the offset to the memory address of the next line number 3755 (in words). Do this first, so that we can skip ahead to the 3756 next useful line number entry. */ 3757 if (l->next == (lineno_list_t *) NULL) 3758 { 3759 /* We want a count of zero, but it will be decremented 3760 before it is used. */ 3761 count = 1; 3762 } 3763 else if (l->next->frag->fr_address + l->next->paddr 3764 > l->frag->fr_address + l->paddr) 3765 { 3766 count = ((l->next->frag->fr_address + l->next->paddr 3767 - (l->frag->fr_address + l->paddr)) 3768 >> 2); 3769 } 3770 else 3771 { 3772 /* Don't change last, so we still get the right delta. */ 3773 continue; 3774 } 3775 3776 if (l->file != file || l->proc != proc) 3777 { 3778 if (l->proc != proc && proc != (proc_t *) NULL) 3779 proc->pdr.lnHigh = last->lineno; 3780 if (l->file != file && file != (efdr_t *) NULL) 3781 { 3782 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3783 file->fdr.cline = totcount + count; 3784 if (linecntptr != (long *) NULL) 3785 *linecntptr += totcount + count; 3786 totcount = 0; 3787 } 3788 3789 if (l->file != file) 3790 { 3791 efdr_t *last_file = file; 3792 3793 file = l->file; 3794 if (last_file != (efdr_t *) NULL) 3795 file->fdr.ilineBase 3796 = last_file->fdr.ilineBase + last_file->fdr.cline; 3797 else 3798 file->fdr.ilineBase = 0; 3799 file->fdr.cbLineOffset = c; 3800 } 3801 if (l->proc != proc) 3802 { 3803 proc = l->proc; 3804 if (proc != (proc_t *) NULL) 3805 { 3806 proc->pdr.lnLow = l->lineno; 3807 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset; 3808 proc->pdr.iline = totcount; 3809 } 3810 } 3811 3812 last = (lineno_list_t *) NULL; 3813 } 3814 3815 totcount += count; 3816 3817 /* Get the offset to this line number. */ 3818 if (last == (lineno_list_t *) NULL) 3819 delta = 0; 3820 else 3821 delta = l->lineno - last->lineno; 3822 3823 /* Put in the offset to this line number. */ 3824 while (delta != 0) 3825 { 3826 int setcount; 3827 3828 /* 1 is added to each count read. */ 3829 --count; 3830 /* We can only adjust the word count by up to 15 words at a 3831 time. */ 3832 if (count <= 0x0f) 3833 { 3834 setcount = count; 3835 count = 0; 3836 } 3837 else 3838 { 3839 setcount = 0x0f; 3840 count -= 0x0f; 3841 } 3842 if (delta >= -7 && delta <= 7) 3843 { 3844 if (bufptr >= *bufend) 3845 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3846 *bufptr++ = setcount + (delta << 4); 3847 delta = 0; 3848 ++c; 3849 } 3850 else 3851 { 3852 int set; 3853 3854 if (*bufend - bufptr < 3) 3855 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3); 3856 *bufptr++ = setcount + (8 << 4); 3857 if (delta < -0x8000) 3858 { 3859 set = -0x8000; 3860 delta += 0x8000; 3861 } 3862 else if (delta > 0x7fff) 3863 { 3864 set = 0x7fff; 3865 delta -= 0x7fff; 3866 } 3867 else 3868 { 3869 set = delta; 3870 delta = 0; 3871 } 3872 *bufptr++ = set >> 8; 3873 *bufptr++ = set & 0xffff; 3874 c += 3; 3875 } 3876 } 3877 3878 /* Finish adjusting the count. */ 3879 while (count > 0) 3880 { 3881 if (bufptr >= *bufend) 3882 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3883 /* 1 is added to each count read. */ 3884 --count; 3885 if (count > 0x0f) 3886 { 3887 *bufptr++ = 0x0f; 3888 count -= 0x0f; 3889 } 3890 else 3891 { 3892 *bufptr++ = count; 3893 count = 0; 3894 } 3895 ++c; 3896 } 3897 3898 ++iline; 3899 last = l; 3900 } 3901 3902 if (proc != (proc_t *) NULL) 3903 proc->pdr.lnHigh = last->lineno; 3904 if (file != (efdr_t *) NULL) 3905 { 3906 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3907 file->fdr.cline = totcount; 3908 } 3909 3910 if (linecntptr != (long *) NULL) 3911 *linecntptr += totcount; 3912 3913 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr); 3914 3915 return c; 3916 } 3917 3918 /* Build and swap out the symbols. */ 3919 3920 static unsigned long 3921 ecoff_build_symbols (const struct ecoff_debug_swap *backend, 3922 char **buf, 3923 char **bufend, 3924 unsigned long offset) 3925 { 3926 const bfd_size_type external_sym_size = backend->external_sym_size; 3927 void (* const swap_sym_out) (bfd *, const SYMR *, void *) 3928 = backend->swap_sym_out; 3929 char *sym_out; 3930 long isym; 3931 vlinks_t *file_link; 3932 3933 sym_out = *buf + offset; 3934 3935 isym = 0; 3936 3937 /* The symbols are stored by file. */ 3938 for (file_link = file_desc.first; 3939 file_link != (vlinks_t *) NULL; 3940 file_link = file_link->next) 3941 { 3942 int ifilesym; 3943 int fil_cnt; 3944 efdr_t *fil_ptr; 3945 efdr_t *fil_end; 3946 3947 if (file_link->next == (vlinks_t *) NULL) 3948 fil_cnt = file_desc.objects_last_page; 3949 else 3950 fil_cnt = file_desc.objects_per_page; 3951 fil_ptr = file_link->datum->file; 3952 fil_end = fil_ptr + fil_cnt; 3953 for (; fil_ptr < fil_end; fil_ptr++) 3954 { 3955 vlinks_t *sym_link; 3956 3957 fil_ptr->fdr.isymBase = isym; 3958 ifilesym = isym; 3959 for (sym_link = fil_ptr->symbols.first; 3960 sym_link != (vlinks_t *) NULL; 3961 sym_link = sym_link->next) 3962 { 3963 int sym_cnt; 3964 localsym_t *sym_ptr; 3965 localsym_t *sym_end; 3966 3967 if (sym_link->next == (vlinks_t *) NULL) 3968 sym_cnt = fil_ptr->symbols.objects_last_page; 3969 else 3970 sym_cnt = fil_ptr->symbols.objects_per_page; 3971 sym_ptr = sym_link->datum->sym; 3972 sym_end = sym_ptr + sym_cnt; 3973 for (; sym_ptr < sym_end; sym_ptr++) 3974 { 3975 int local; 3976 symbolS *as_sym; 3977 forward_t *f; 3978 3979 know (sym_ptr->file_ptr == fil_ptr); 3980 3981 /* If there is no associated gas symbol, then this 3982 is a pure debugging symbol. We have already 3983 added the name (if any) to fil_ptr->strings. 3984 Otherwise we must decide whether this is an 3985 external or a local symbol (actually, it may be 3986 both if the local provides additional debugging 3987 information for the external). */ 3988 local = 1; 3989 as_sym = sym_ptr->as_sym; 3990 if (as_sym != (symbolS *) NULL) 3991 { 3992 symint_t indx; 3993 3994 /* The value of a block start symbol is the 3995 offset from the start of the procedure. For 3996 other symbols we just use the gas value (but 3997 we must offset it by the vma of the section, 3998 just as BFD does, because BFD will not see 3999 this value). */ 4000 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block 4001 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text) 4002 { 4003 symbolS *begin_sym; 4004 4005 know (sym_ptr->proc_ptr != (proc_t *) NULL); 4006 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 4007 if (S_GET_SEGMENT (as_sym) 4008 != S_GET_SEGMENT (begin_sym)) 4009 as_warn (_(".begin/.bend in different segments")); 4010 sym_ptr->ecoff_sym.asym.value = 4011 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 4012 } 4013 else 4014 sym_ptr->ecoff_sym.asym.value = 4015 (S_GET_VALUE (as_sym) 4016 + bfd_get_section_vma (stdoutput, 4017 S_GET_SEGMENT (as_sym)) 4018 + sym_ptr->addend); 4019 4020 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym); 4021 4022 /* Set st_Proc to st_StaticProc for local 4023 functions. */ 4024 if (sym_ptr->ecoff_sym.asym.st == st_Proc 4025 && S_IS_DEFINED (as_sym) 4026 && ! S_IS_EXTERNAL (as_sym) 4027 && ! S_IS_WEAK (as_sym)) 4028 sym_ptr->ecoff_sym.asym.st = st_StaticProc; 4029 4030 /* Get the type and storage class based on where 4031 the symbol actually wound up. Traditionally, 4032 N_LBRAC and N_RBRAC are *not* relocated. */ 4033 indx = sym_ptr->ecoff_sym.asym.index; 4034 if (sym_ptr->ecoff_sym.asym.st == st_Nil 4035 && sym_ptr->ecoff_sym.asym.sc == sc_Nil 4036 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4037 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC) 4038 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC)))) 4039 { 4040 segT seg; 4041 const char *segname; 4042 st_t st; 4043 sc_t sc; 4044 4045 seg = S_GET_SEGMENT (as_sym); 4046 segname = segment_name (seg); 4047 4048 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4049 && (S_IS_EXTERNAL (as_sym) 4050 || S_IS_WEAK (as_sym) 4051 || ! S_IS_DEFINED (as_sym))) 4052 { 4053 if ((symbol_get_bfdsym (as_sym)->flags 4054 & BSF_FUNCTION) != 0) 4055 st = st_Proc; 4056 else 4057 st = st_Global; 4058 } 4059 else if (seg == text_section) 4060 st = st_Label; 4061 else 4062 st = st_Static; 4063 4064 if (! S_IS_DEFINED (as_sym)) 4065 { 4066 valueT s; 4067 4068 s = symbol_get_obj (as_sym)->ecoff_extern_size; 4069 if (s == 0 4070 || s > bfd_get_gp_size (stdoutput)) 4071 sc = sc_Undefined; 4072 else 4073 { 4074 sc = sc_SUndefined; 4075 sym_ptr->ecoff_sym.asym.value = s; 4076 } 4077 #ifdef S_SET_SIZE 4078 S_SET_SIZE (as_sym, s); 4079 #endif 4080 } 4081 else if (S_IS_COMMON (as_sym)) 4082 { 4083 if (S_GET_VALUE (as_sym) > 0 4084 && (S_GET_VALUE (as_sym) 4085 <= bfd_get_gp_size (stdoutput))) 4086 sc = sc_SCommon; 4087 else 4088 sc = sc_Common; 4089 } 4090 else if (seg == text_section) 4091 sc = sc_Text; 4092 else if (seg == data_section) 4093 sc = sc_Data; 4094 else if (strcmp (segname, ".rdata") == 0 4095 || strcmp (segname, ".rodata") == 0) 4096 sc = sc_RData; 4097 else if (strcmp (segname, ".sdata") == 0) 4098 sc = sc_SData; 4099 else if (seg == bss_section) 4100 sc = sc_Bss; 4101 else if (strcmp (segname, ".sbss") == 0) 4102 sc = sc_SBss; 4103 else if (seg == bfd_abs_section_ptr) 4104 sc = sc_Abs; 4105 else 4106 { 4107 /* This must be a user named section. 4108 This is not possible in ECOFF, but it 4109 is in ELF. */ 4110 sc = sc_Data; 4111 } 4112 4113 sym_ptr->ecoff_sym.asym.st = (int) st; 4114 sym_ptr->ecoff_sym.asym.sc = (int) sc; 4115 } 4116 4117 /* This is just an external symbol if it is 4118 outside a procedure and it has a type. 4119 FIXME: g++ will generate symbols which have 4120 different names in the debugging information 4121 than the actual symbol. Should we handle 4122 them here? */ 4123 if ((S_IS_EXTERNAL (as_sym) 4124 || S_IS_WEAK (as_sym) 4125 || ! S_IS_DEFINED (as_sym)) 4126 && sym_ptr->proc_ptr == (proc_t *) NULL 4127 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil 4128 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)) 4129 local = 0; 4130 4131 /* This is just an external symbol if it is a 4132 common symbol. */ 4133 if (S_IS_COMMON (as_sym)) 4134 local = 0; 4135 4136 /* If an st_end symbol has an associated gas 4137 symbol, then it is a local label created for 4138 a .bend or .end directive. Stabs line 4139 numbers will have FAKE_LABEL_CHAR in the names. */ 4140 if (local 4141 && sym_ptr->ecoff_sym.asym.st != st_End 4142 && strchr (sym_ptr->name, FAKE_LABEL_CHAR) == 0) 4143 sym_ptr->ecoff_sym.asym.iss = 4144 add_string (&fil_ptr->strings, 4145 fil_ptr->str_hash, 4146 sym_ptr->name, 4147 (shash_t **) NULL); 4148 } 4149 4150 /* We now know the index of this symbol; fill in 4151 locations that have been waiting for that 4152 information. */ 4153 if (sym_ptr->begin_ptr != (localsym_t *) NULL) 4154 { 4155 localsym_t *begin_ptr; 4156 st_t begin_type; 4157 4158 know (local); 4159 begin_ptr = sym_ptr->begin_ptr; 4160 know (begin_ptr->sym_index != -1); 4161 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index; 4162 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4163 sym_ptr->ecoff_sym.asym.iss = 4164 begin_ptr->ecoff_sym.asym.iss; 4165 4166 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st; 4167 if (begin_type == st_File 4168 || begin_type == st_Block) 4169 { 4170 begin_ptr->ecoff_sym.asym.index = 4171 isym - ifilesym + 1; 4172 (*swap_sym_out) (stdoutput, 4173 &begin_ptr->ecoff_sym.asym, 4174 (*buf 4175 + offset 4176 + (begin_ptr->sym_index 4177 * external_sym_size))); 4178 } 4179 else 4180 { 4181 know (begin_ptr->index_ptr != (aux_t *) NULL); 4182 begin_ptr->index_ptr->data.isym = 4183 isym - ifilesym + 1; 4184 } 4185 4186 /* The value of the symbol marking the end of a 4187 procedure is the size of the procedure. The 4188 value of the symbol marking the end of a 4189 block is the offset from the start of the 4190 procedure to the block. */ 4191 if (begin_type == st_Proc 4192 || begin_type == st_StaticProc) 4193 { 4194 know (as_sym != (symbolS *) NULL); 4195 know (begin_ptr->as_sym != (symbolS *) NULL); 4196 if (S_GET_SEGMENT (as_sym) 4197 != S_GET_SEGMENT (begin_ptr->as_sym)) 4198 as_warn (_(".begin/.bend in different segments")); 4199 sym_ptr->ecoff_sym.asym.value = 4200 (S_GET_VALUE (as_sym) 4201 - S_GET_VALUE (begin_ptr->as_sym)); 4202 4203 /* If the size is odd, this is probably a 4204 mips16 function; force it to be even. */ 4205 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0) 4206 ++sym_ptr->ecoff_sym.asym.value; 4207 4208 #ifdef S_SET_SIZE 4209 S_SET_SIZE (begin_ptr->as_sym, 4210 sym_ptr->ecoff_sym.asym.value); 4211 #endif 4212 } 4213 else if (begin_type == st_Block 4214 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4215 { 4216 symbolS *begin_sym; 4217 4218 know (as_sym != (symbolS *) NULL); 4219 know (sym_ptr->proc_ptr != (proc_t *) NULL); 4220 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 4221 if (S_GET_SEGMENT (as_sym) 4222 != S_GET_SEGMENT (begin_sym)) 4223 as_warn (_(".begin/.bend in different segments")); 4224 sym_ptr->ecoff_sym.asym.value = 4225 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 4226 } 4227 } 4228 4229 for (f = sym_ptr->forward_ref; 4230 f != (forward_t *) NULL; 4231 f = f->next) 4232 { 4233 know (local); 4234 f->ifd_ptr->data.isym = fil_ptr->file_index; 4235 f->index_ptr->data.rndx.index = isym - ifilesym; 4236 } 4237 4238 if (local) 4239 { 4240 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size) 4241 sym_out = ecoff_add_bytes (buf, bufend, 4242 sym_out, 4243 external_sym_size); 4244 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym, 4245 sym_out); 4246 sym_out += external_sym_size; 4247 4248 sym_ptr->sym_index = isym; 4249 4250 if (sym_ptr->proc_ptr != (proc_t *) NULL 4251 && sym_ptr->proc_ptr->sym == sym_ptr) 4252 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym; 4253 4254 ++isym; 4255 } 4256 4257 /* Record the local symbol index and file number in 4258 case this is an external symbol. Note that this 4259 destroys the asym.index field. */ 4260 if (as_sym != (symbolS *) NULL 4261 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr) 4262 { 4263 if ((sym_ptr->ecoff_sym.asym.st == st_Proc 4264 || sym_ptr->ecoff_sym.asym.st == st_StaticProc) 4265 && local) 4266 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1; 4267 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index; 4268 4269 /* Don't try to merge an FDR which has an 4270 external symbol attached to it. */ 4271 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym)) 4272 fil_ptr->fdr.fMerge = 0; 4273 } 4274 } 4275 } 4276 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase; 4277 } 4278 } 4279 4280 return offset + isym * external_sym_size; 4281 } 4282 4283 /* Swap out the procedure information. */ 4284 4285 static unsigned long 4286 ecoff_build_procs (const struct ecoff_debug_swap *backend, 4287 char **buf, 4288 char **bufend, 4289 unsigned long offset) 4290 { 4291 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4292 void (* const swap_pdr_out) (bfd *, const PDR *, void *) 4293 = backend->swap_pdr_out; 4294 char *pdr_out; 4295 long iproc; 4296 vlinks_t *file_link; 4297 4298 pdr_out = *buf + offset; 4299 4300 iproc = 0; 4301 4302 /* The procedures are stored by file. */ 4303 for (file_link = file_desc.first; 4304 file_link != (vlinks_t *) NULL; 4305 file_link = file_link->next) 4306 { 4307 int fil_cnt; 4308 efdr_t *fil_ptr; 4309 efdr_t *fil_end; 4310 4311 if (file_link->next == (vlinks_t *) NULL) 4312 fil_cnt = file_desc.objects_last_page; 4313 else 4314 fil_cnt = file_desc.objects_per_page; 4315 fil_ptr = file_link->datum->file; 4316 fil_end = fil_ptr + fil_cnt; 4317 for (; fil_ptr < fil_end; fil_ptr++) 4318 { 4319 vlinks_t *proc_link; 4320 int first; 4321 4322 fil_ptr->fdr.ipdFirst = iproc; 4323 first = 1; 4324 for (proc_link = fil_ptr->procs.first; 4325 proc_link != (vlinks_t *) NULL; 4326 proc_link = proc_link->next) 4327 { 4328 int prc_cnt; 4329 proc_t *proc_ptr; 4330 proc_t *proc_end; 4331 4332 if (proc_link->next == (vlinks_t *) NULL) 4333 prc_cnt = fil_ptr->procs.objects_last_page; 4334 else 4335 prc_cnt = fil_ptr->procs.objects_per_page; 4336 proc_ptr = proc_link->datum->proc; 4337 proc_end = proc_ptr + prc_cnt; 4338 for (; proc_ptr < proc_end; proc_ptr++) 4339 { 4340 symbolS *adr_sym; 4341 unsigned long adr; 4342 4343 adr_sym = proc_ptr->sym->as_sym; 4344 adr = (S_GET_VALUE (adr_sym) 4345 + bfd_get_section_vma (stdoutput, 4346 S_GET_SEGMENT (adr_sym))); 4347 if (first) 4348 { 4349 /* This code used to force the adr of the very 4350 first fdr to be 0. However, the native tools 4351 don't do that, and I can't remember why it 4352 used to work that way, so I took it out. */ 4353 fil_ptr->fdr.adr = adr; 4354 first = 0; 4355 } 4356 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr; 4357 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size) 4358 pdr_out = ecoff_add_bytes (buf, bufend, 4359 pdr_out, 4360 external_pdr_size); 4361 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out); 4362 pdr_out += external_pdr_size; 4363 ++iproc; 4364 } 4365 } 4366 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst; 4367 } 4368 } 4369 4370 return offset + iproc * external_pdr_size; 4371 } 4372 4373 /* Swap out the aux information. */ 4374 4375 static unsigned long 4376 ecoff_build_aux (const struct ecoff_debug_swap *backend, 4377 char **buf, 4378 char **bufend, 4379 unsigned long offset) 4380 { 4381 int bigendian; 4382 union aux_ext *aux_out; 4383 long iaux; 4384 vlinks_t *file_link; 4385 4386 bigendian = bfd_big_endian (stdoutput); 4387 4388 aux_out = (union aux_ext *) (*buf + offset); 4389 4390 iaux = 0; 4391 4392 /* The aux entries are stored by file. */ 4393 for (file_link = file_desc.first; 4394 file_link != (vlinks_t *) NULL; 4395 file_link = file_link->next) 4396 { 4397 int fil_cnt; 4398 efdr_t *fil_ptr; 4399 efdr_t *fil_end; 4400 4401 if (file_link->next == (vlinks_t *) NULL) 4402 fil_cnt = file_desc.objects_last_page; 4403 else 4404 fil_cnt = file_desc.objects_per_page; 4405 fil_ptr = file_link->datum->file; 4406 fil_end = fil_ptr + fil_cnt; 4407 for (; fil_ptr < fil_end; fil_ptr++) 4408 { 4409 vlinks_t *aux_link; 4410 4411 fil_ptr->fdr.fBigendian = bigendian; 4412 fil_ptr->fdr.iauxBase = iaux; 4413 for (aux_link = fil_ptr->aux_syms.first; 4414 aux_link != (vlinks_t *) NULL; 4415 aux_link = aux_link->next) 4416 { 4417 int aux_cnt; 4418 aux_t *aux_ptr; 4419 aux_t *aux_end; 4420 4421 if (aux_link->next == (vlinks_t *) NULL) 4422 aux_cnt = fil_ptr->aux_syms.objects_last_page; 4423 else 4424 aux_cnt = fil_ptr->aux_syms.objects_per_page; 4425 aux_ptr = aux_link->datum->aux; 4426 aux_end = aux_ptr + aux_cnt; 4427 for (; aux_ptr < aux_end; aux_ptr++) 4428 { 4429 if ((unsigned long) (*bufend - (char *) aux_out) 4430 < sizeof (union aux_ext)) 4431 aux_out = ((union aux_ext *) 4432 ecoff_add_bytes (buf, bufend, 4433 (char *) aux_out, 4434 sizeof (union aux_ext))); 4435 switch (aux_ptr->type) 4436 { 4437 case aux_tir: 4438 (*backend->swap_tir_out) (bigendian, 4439 &aux_ptr->data.ti, 4440 &aux_out->a_ti); 4441 break; 4442 case aux_rndx: 4443 (*backend->swap_rndx_out) (bigendian, 4444 &aux_ptr->data.rndx, 4445 &aux_out->a_rndx); 4446 break; 4447 case aux_dnLow: 4448 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow, 4449 aux_out); 4450 break; 4451 case aux_dnHigh: 4452 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh, 4453 aux_out); 4454 break; 4455 case aux_isym: 4456 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym, 4457 aux_out); 4458 break; 4459 case aux_iss: 4460 AUX_PUT_ISS (bigendian, aux_ptr->data.iss, 4461 aux_out); 4462 break; 4463 case aux_width: 4464 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width, 4465 aux_out); 4466 break; 4467 case aux_count: 4468 AUX_PUT_COUNT (bigendian, aux_ptr->data.count, 4469 aux_out); 4470 break; 4471 } 4472 4473 ++aux_out; 4474 ++iaux; 4475 } 4476 } 4477 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase; 4478 } 4479 } 4480 4481 return ecoff_padding_adjust (backend, buf, bufend, 4482 offset + iaux * sizeof (union aux_ext), 4483 (char **) NULL); 4484 } 4485 4486 /* Copy out the strings from a varray_t. This returns the number of 4487 bytes copied, rather than the new offset. */ 4488 4489 static unsigned long 4490 ecoff_build_strings (char **buf, 4491 char **bufend, 4492 unsigned long offset, 4493 varray_t *vp) 4494 { 4495 unsigned long istr; 4496 char *str_out; 4497 vlinks_t *str_link; 4498 4499 str_out = *buf + offset; 4500 4501 istr = 0; 4502 4503 for (str_link = vp->first; 4504 str_link != (vlinks_t *) NULL; 4505 str_link = str_link->next) 4506 { 4507 unsigned long str_cnt; 4508 4509 if (str_link->next == (vlinks_t *) NULL) 4510 str_cnt = vp->objects_last_page; 4511 else 4512 str_cnt = vp->objects_per_page; 4513 4514 if ((unsigned long)(*bufend - str_out) < str_cnt) 4515 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt); 4516 4517 memcpy (str_out, str_link->datum->byte, str_cnt); 4518 str_out += str_cnt; 4519 istr += str_cnt; 4520 } 4521 4522 return istr; 4523 } 4524 4525 /* Dump out the local strings. */ 4526 4527 static unsigned long 4528 ecoff_build_ss (const struct ecoff_debug_swap *backend, 4529 char **buf, 4530 char **bufend, 4531 unsigned long offset) 4532 { 4533 long iss; 4534 vlinks_t *file_link; 4535 4536 iss = 0; 4537 4538 for (file_link = file_desc.first; 4539 file_link != (vlinks_t *) NULL; 4540 file_link = file_link->next) 4541 { 4542 int fil_cnt; 4543 efdr_t *fil_ptr; 4544 efdr_t *fil_end; 4545 4546 if (file_link->next == (vlinks_t *) NULL) 4547 fil_cnt = file_desc.objects_last_page; 4548 else 4549 fil_cnt = file_desc.objects_per_page; 4550 fil_ptr = file_link->datum->file; 4551 fil_end = fil_ptr + fil_cnt; 4552 for (; fil_ptr < fil_end; fil_ptr++) 4553 { 4554 long ss_cnt; 4555 4556 fil_ptr->fdr.issBase = iss; 4557 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss, 4558 &fil_ptr->strings); 4559 fil_ptr->fdr.cbSs = ss_cnt; 4560 iss += ss_cnt; 4561 } 4562 } 4563 4564 return ecoff_padding_adjust (backend, buf, bufend, offset + iss, 4565 (char **) NULL); 4566 } 4567 4568 /* Swap out the file descriptors. */ 4569 4570 static unsigned long 4571 ecoff_build_fdr (const struct ecoff_debug_swap *backend, 4572 char **buf, 4573 char **bufend, 4574 unsigned long offset) 4575 { 4576 const bfd_size_type external_fdr_size = backend->external_fdr_size; 4577 void (* const swap_fdr_out) (bfd *, const FDR *, void *) 4578 = backend->swap_fdr_out; 4579 long ifile; 4580 char *fdr_out; 4581 vlinks_t *file_link; 4582 4583 ifile = 0; 4584 4585 fdr_out = *buf + offset; 4586 4587 for (file_link = file_desc.first; 4588 file_link != (vlinks_t *) NULL; 4589 file_link = file_link->next) 4590 { 4591 int fil_cnt; 4592 efdr_t *fil_ptr; 4593 efdr_t *fil_end; 4594 4595 if (file_link->next == (vlinks_t *) NULL) 4596 fil_cnt = file_desc.objects_last_page; 4597 else 4598 fil_cnt = file_desc.objects_per_page; 4599 fil_ptr = file_link->datum->file; 4600 fil_end = fil_ptr + fil_cnt; 4601 for (; fil_ptr < fil_end; fil_ptr++) 4602 { 4603 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size) 4604 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out, 4605 external_fdr_size); 4606 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out); 4607 fdr_out += external_fdr_size; 4608 ++ifile; 4609 } 4610 } 4611 4612 return offset + ifile * external_fdr_size; 4613 } 4614 4615 /* Set up the external symbols. These are supposed to be handled by 4616 the backend. This routine just gets the right information and 4617 calls a backend function to deal with it. */ 4618 4619 static void 4620 ecoff_setup_ext (void) 4621 { 4622 symbolS *sym; 4623 4624 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4625 { 4626 if (symbol_get_obj (sym)->ecoff_symbol == NULL) 4627 continue; 4628 4629 /* If this is a local symbol, then force the fields to zero. */ 4630 if (! S_IS_EXTERNAL (sym) 4631 && ! S_IS_WEAK (sym) 4632 && S_IS_DEFINED (sym)) 4633 { 4634 struct localsym *lsym; 4635 4636 lsym = symbol_get_obj (sym)->ecoff_symbol; 4637 lsym->ecoff_sym.asym.value = 0; 4638 lsym->ecoff_sym.asym.st = (int) st_Nil; 4639 lsym->ecoff_sym.asym.sc = (int) sc_Nil; 4640 lsym->ecoff_sym.asym.index = indexNil; 4641 } 4642 4643 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym); 4644 } 4645 } 4646 4647 /* Build the ECOFF debugging information. */ 4648 4649 unsigned long 4650 ecoff_build_debug (HDRR *hdr, 4651 char **bufp, 4652 const struct ecoff_debug_swap *backend) 4653 { 4654 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4655 tag_t *ptag; 4656 tag_t *ptag_next; 4657 efdr_t *fil_ptr; 4658 int end_warning; 4659 efdr_t *hold_file_ptr; 4660 proc_t *hold_proc_ptr; 4661 symbolS *sym; 4662 char *buf; 4663 char *bufend; 4664 unsigned long offset; 4665 4666 /* Make sure we have a file. */ 4667 if (first_file == (efdr_t *) NULL) 4668 add_file ((const char *) NULL, 0, 1); 4669 4670 /* Handle any top level tags. */ 4671 for (ptag = top_tag_head->first_tag; 4672 ptag != (tag_t *) NULL; 4673 ptag = ptag_next) 4674 { 4675 if (ptag->forward_ref != (forward_t *) NULL) 4676 add_unknown_tag (ptag); 4677 4678 ptag_next = ptag->same_block; 4679 ptag->hash_ptr->tag_ptr = ptag->same_name; 4680 free_tag (ptag); 4681 } 4682 4683 free_thead (top_tag_head); 4684 4685 /* Look through the symbols. Add debugging information for each 4686 symbol that has not already received it. */ 4687 hold_file_ptr = cur_file_ptr; 4688 hold_proc_ptr = cur_proc_ptr; 4689 cur_proc_ptr = (proc_t *) NULL; 4690 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4691 { 4692 if (symbol_get_obj (sym)->ecoff_symbol != NULL 4693 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL 4694 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0) 4695 continue; 4696 4697 cur_file_ptr = symbol_get_obj (sym)->ecoff_file; 4698 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym, 4699 (bfd_vma) 0, S_GET_VALUE (sym), indexNil); 4700 } 4701 cur_proc_ptr = hold_proc_ptr; 4702 cur_file_ptr = hold_file_ptr; 4703 4704 /* Output an ending symbol for all the files. We have to do this 4705 here for the last file, so we may as well do it for all of the 4706 files. */ 4707 end_warning = 0; 4708 for (fil_ptr = first_file; 4709 fil_ptr != (efdr_t *) NULL; 4710 fil_ptr = fil_ptr->next_file) 4711 { 4712 cur_file_ptr = fil_ptr; 4713 while (cur_file_ptr->cur_scope != (scope_t *) NULL 4714 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL) 4715 { 4716 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev; 4717 if (! end_warning && ! cur_file_ptr->fake) 4718 { 4719 as_warn (_("missing .end or .bend at end of file")); 4720 end_warning = 1; 4721 } 4722 } 4723 if (cur_file_ptr->cur_scope != (scope_t *) NULL) 4724 (void) add_ecoff_symbol ((const char *) NULL, 4725 st_End, sc_Text, 4726 (symbolS *) NULL, 4727 (bfd_vma) 0, 4728 (symint_t) 0, 4729 (symint_t) 0); 4730 } 4731 4732 /* Build the symbolic information. */ 4733 offset = 0; 4734 buf = XNEWVEC (char, PAGE_SIZE); 4735 bufend = buf + PAGE_SIZE; 4736 4737 /* Build the line number information. */ 4738 hdr->cbLineOffset = offset; 4739 offset = ecoff_build_lineno (backend, &buf, &bufend, offset, 4740 &hdr->ilineMax); 4741 hdr->cbLine = offset - hdr->cbLineOffset; 4742 4743 /* We don't use dense numbers at all. */ 4744 hdr->idnMax = 0; 4745 hdr->cbDnOffset = 0; 4746 4747 /* We can't build the PDR table until we have built the symbols, 4748 because a PDR contains a symbol index. However, we set aside 4749 space at this point. */ 4750 hdr->ipdMax = proc_cnt; 4751 hdr->cbPdOffset = offset; 4752 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size) 4753 (void) ecoff_add_bytes (&buf, &bufend, buf + offset, 4754 proc_cnt * external_pdr_size); 4755 offset += proc_cnt * external_pdr_size; 4756 4757 /* Build the local symbols. */ 4758 hdr->cbSymOffset = offset; 4759 offset = ecoff_build_symbols (backend, &buf, &bufend, offset); 4760 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size; 4761 4762 /* Building the symbols initializes the symbol index in the PDR's. 4763 Now we can swap out the PDR's. */ 4764 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset); 4765 4766 /* We don't use optimization symbols. */ 4767 hdr->ioptMax = 0; 4768 hdr->cbOptOffset = 0; 4769 4770 /* Swap out the auxiliary type information. */ 4771 hdr->cbAuxOffset = offset; 4772 offset = ecoff_build_aux (backend, &buf, &bufend, offset); 4773 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext); 4774 4775 /* Copy out the local strings. */ 4776 hdr->cbSsOffset = offset; 4777 offset = ecoff_build_ss (backend, &buf, &bufend, offset); 4778 hdr->issMax = offset - hdr->cbSsOffset; 4779 4780 /* We don't use relative file descriptors. */ 4781 hdr->crfd = 0; 4782 hdr->cbRfdOffset = 0; 4783 4784 /* Swap out the file descriptors. */ 4785 hdr->cbFdOffset = offset; 4786 offset = ecoff_build_fdr (backend, &buf, &bufend, offset); 4787 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size; 4788 4789 /* Set up the external symbols, which are handled by the BFD back 4790 end. */ 4791 hdr->issExtMax = 0; 4792 hdr->cbSsExtOffset = 0; 4793 hdr->iextMax = 0; 4794 hdr->cbExtOffset = 0; 4795 ecoff_setup_ext (); 4796 4797 know ((offset & (backend->debug_align - 1)) == 0); 4798 4799 /* FIXME: This value should be determined from the .verstamp directive, 4800 with reasonable defaults in config files. */ 4801 #ifdef TC_ALPHA 4802 hdr->vstamp = 0x030b; 4803 #else 4804 hdr->vstamp = 0x020b; 4805 #endif 4806 4807 *bufp = buf; 4808 return offset; 4809 } 4810 4811 /* Allocate a cluster of pages. */ 4813 4814 #ifndef MALLOC_CHECK 4815 4816 static page_type * 4817 allocate_cluster (unsigned long npages) 4818 { 4819 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE); 4820 4821 #ifdef ECOFF_DEBUG 4822 if (debug > 3) 4823 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value); 4824 #endif 4825 4826 memset (value, 0, npages * PAGE_USIZE); 4827 4828 return value; 4829 } 4830 4831 static page_type *cluster_ptr = NULL; 4832 static unsigned long pages_left = 0; 4833 4834 #endif /* MALLOC_CHECK */ 4835 4836 /* Allocate one page (which is initialized to 0). */ 4837 4838 static page_type * 4839 allocate_page (void) 4840 { 4841 #ifndef MALLOC_CHECK 4842 4843 if (pages_left == 0) 4844 { 4845 pages_left = MAX_CLUSTER_PAGES; 4846 cluster_ptr = allocate_cluster (pages_left); 4847 } 4848 4849 pages_left--; 4850 return cluster_ptr++; 4851 4852 #else /* MALLOC_CHECK */ 4853 4854 page_type *ptr; 4855 4856 ptr = xmalloc (PAGE_USIZE); 4857 memset (ptr, 0, PAGE_USIZE); 4858 return ptr; 4859 4860 #endif /* MALLOC_CHECK */ 4861 } 4862 4863 /* Allocate scoping information. */ 4865 4866 static scope_t * 4867 allocate_scope (void) 4868 { 4869 scope_t *ptr; 4870 static scope_t initial_scope; 4871 4872 #ifndef MALLOC_CHECK 4873 4874 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4875 if (ptr != (scope_t *) NULL) 4876 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free; 4877 else 4878 { 4879 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated; 4880 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page; 4881 4882 if (unallocated == 0) 4883 { 4884 unallocated = PAGE_SIZE / sizeof (scope_t); 4885 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page (); 4886 alloc_counts[(int) alloc_type_scope].total_pages++; 4887 } 4888 4889 ptr = &cur_page->scope[--unallocated]; 4890 alloc_counts[(int) alloc_type_scope].unallocated = unallocated; 4891 } 4892 4893 #else 4894 4895 ptr = XNEW (scope_t); 4896 4897 #endif 4898 4899 alloc_counts[(int) alloc_type_scope].total_alloc++; 4900 *ptr = initial_scope; 4901 return ptr; 4902 } 4903 4904 /* Free scoping information. */ 4905 4906 static void 4907 free_scope (scope_t *ptr) 4908 { 4909 alloc_counts[(int) alloc_type_scope].total_free++; 4910 4911 #ifndef MALLOC_CHECK 4912 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4913 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr; 4914 #else 4915 free ((void *) ptr); 4916 #endif 4917 } 4918 4919 /* Allocate links for pages in a virtual array. */ 4921 4922 static vlinks_t * 4923 allocate_vlinks (void) 4924 { 4925 vlinks_t *ptr; 4926 static vlinks_t initial_vlinks; 4927 4928 #ifndef MALLOC_CHECK 4929 4930 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated; 4931 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page; 4932 4933 if (unallocated == 0) 4934 { 4935 unallocated = PAGE_SIZE / sizeof (vlinks_t); 4936 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page (); 4937 alloc_counts[(int) alloc_type_vlinks].total_pages++; 4938 } 4939 4940 ptr = &cur_page->vlinks[--unallocated]; 4941 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated; 4942 4943 #else 4944 4945 ptr = XNEW (vlinks_t); 4946 4947 #endif 4948 4949 alloc_counts[(int) alloc_type_vlinks].total_alloc++; 4950 *ptr = initial_vlinks; 4951 return ptr; 4952 } 4953 4954 /* Allocate string hash buckets. */ 4956 4957 static shash_t * 4958 allocate_shash (void) 4959 { 4960 shash_t *ptr; 4961 static shash_t initial_shash; 4962 4963 #ifndef MALLOC_CHECK 4964 4965 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated; 4966 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page; 4967 4968 if (unallocated == 0) 4969 { 4970 unallocated = PAGE_SIZE / sizeof (shash_t); 4971 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page (); 4972 alloc_counts[(int) alloc_type_shash].total_pages++; 4973 } 4974 4975 ptr = &cur_page->shash[--unallocated]; 4976 alloc_counts[(int) alloc_type_shash].unallocated = unallocated; 4977 4978 #else 4979 4980 ptr = XNEW (shash_t); 4981 4982 #endif 4983 4984 alloc_counts[(int) alloc_type_shash].total_alloc++; 4985 *ptr = initial_shash; 4986 return ptr; 4987 } 4988 4989 /* Allocate type hash buckets. */ 4991 4992 static thash_t * 4993 allocate_thash (void) 4994 { 4995 thash_t *ptr; 4996 static thash_t initial_thash; 4997 4998 #ifndef MALLOC_CHECK 4999 5000 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated; 5001 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page; 5002 5003 if (unallocated == 0) 5004 { 5005 unallocated = PAGE_SIZE / sizeof (thash_t); 5006 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page (); 5007 alloc_counts[(int) alloc_type_thash].total_pages++; 5008 } 5009 5010 ptr = &cur_page->thash[--unallocated]; 5011 alloc_counts[(int) alloc_type_thash].unallocated = unallocated; 5012 5013 #else 5014 5015 ptr = XNEW (thash_t); 5016 5017 #endif 5018 5019 alloc_counts[(int) alloc_type_thash].total_alloc++; 5020 *ptr = initial_thash; 5021 return ptr; 5022 } 5023 5024 /* Allocate structure, union, or enum tag information. */ 5026 5027 static tag_t * 5028 allocate_tag (void) 5029 { 5030 tag_t *ptr; 5031 static tag_t initial_tag; 5032 5033 #ifndef MALLOC_CHECK 5034 5035 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5036 if (ptr != (tag_t *) NULL) 5037 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free; 5038 else 5039 { 5040 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated; 5041 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page; 5042 5043 if (unallocated == 0) 5044 { 5045 unallocated = PAGE_SIZE / sizeof (tag_t); 5046 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page (); 5047 alloc_counts[(int) alloc_type_tag].total_pages++; 5048 } 5049 5050 ptr = &cur_page->tag[--unallocated]; 5051 alloc_counts[(int) alloc_type_tag].unallocated = unallocated; 5052 } 5053 5054 #else 5055 5056 ptr = XNEW (tag_t); 5057 5058 #endif 5059 5060 alloc_counts[(int) alloc_type_tag].total_alloc++; 5061 *ptr = initial_tag; 5062 return ptr; 5063 } 5064 5065 /* Free scoping information. */ 5066 5067 static void 5068 free_tag (tag_t *ptr) 5069 { 5070 alloc_counts[(int) alloc_type_tag].total_free++; 5071 5072 #ifndef MALLOC_CHECK 5073 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5074 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr; 5075 #else 5076 free ((PTR_T) ptr); 5077 #endif 5078 } 5079 5080 /* Allocate forward reference to a yet unknown tag. */ 5082 5083 static forward_t * 5084 allocate_forward (void) 5085 { 5086 forward_t *ptr; 5087 static forward_t initial_forward; 5088 5089 #ifndef MALLOC_CHECK 5090 5091 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated; 5092 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page; 5093 5094 if (unallocated == 0) 5095 { 5096 unallocated = PAGE_SIZE / sizeof (forward_t); 5097 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page (); 5098 alloc_counts[(int) alloc_type_forward].total_pages++; 5099 } 5100 5101 ptr = &cur_page->forward[--unallocated]; 5102 alloc_counts[(int) alloc_type_forward].unallocated = unallocated; 5103 5104 #else 5105 5106 ptr = XNEW (forward_t); 5107 5108 #endif 5109 5110 alloc_counts[(int) alloc_type_forward].total_alloc++; 5111 *ptr = initial_forward; 5112 return ptr; 5113 } 5114 5115 /* Allocate head of type hash list. */ 5117 5118 static thead_t * 5119 allocate_thead (void) 5120 { 5121 thead_t *ptr; 5122 static thead_t initial_thead; 5123 5124 #ifndef MALLOC_CHECK 5125 5126 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5127 if (ptr != (thead_t *) NULL) 5128 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free; 5129 else 5130 { 5131 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated; 5132 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page; 5133 5134 if (unallocated == 0) 5135 { 5136 unallocated = PAGE_SIZE / sizeof (thead_t); 5137 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page (); 5138 alloc_counts[(int) alloc_type_thead].total_pages++; 5139 } 5140 5141 ptr = &cur_page->thead[--unallocated]; 5142 alloc_counts[(int) alloc_type_thead].unallocated = unallocated; 5143 } 5144 5145 #else 5146 5147 ptr = XNEW (thead_t); 5148 5149 #endif 5150 5151 alloc_counts[(int) alloc_type_thead].total_alloc++; 5152 *ptr = initial_thead; 5153 return ptr; 5154 } 5155 5156 /* Free scoping information. */ 5157 5158 static void 5159 free_thead (thead_t *ptr) 5160 { 5161 alloc_counts[(int) alloc_type_thead].total_free++; 5162 5163 #ifndef MALLOC_CHECK 5164 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5165 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr; 5166 #else 5167 free ((PTR_T) ptr); 5168 #endif 5169 } 5170 5171 static lineno_list_t * 5173 allocate_lineno_list (void) 5174 { 5175 lineno_list_t *ptr; 5176 static lineno_list_t initial_lineno_list; 5177 5178 #ifndef MALLOC_CHECK 5179 5180 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated; 5181 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page; 5182 5183 if (unallocated == 0) 5184 { 5185 unallocated = PAGE_SIZE / sizeof (lineno_list_t); 5186 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page (); 5187 alloc_counts[(int) alloc_type_lineno].total_pages++; 5188 } 5189 5190 ptr = &cur_page->lineno[--unallocated]; 5191 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated; 5192 5193 #else 5194 5195 ptr = XNEW (lineno_list_t); 5196 5197 #endif 5198 5199 alloc_counts[(int) alloc_type_lineno].total_alloc++; 5200 *ptr = initial_lineno_list; 5201 return ptr; 5202 } 5203 5204 void 5205 ecoff_set_gp_prolog_size (int sz) 5206 { 5207 if (cur_proc_ptr == 0) 5208 return; 5209 5210 cur_proc_ptr->pdr.gp_prologue = sz; 5211 if (cur_proc_ptr->pdr.gp_prologue != sz) 5212 { 5213 as_warn (_("GP prologue size exceeds field size, using 0 instead")); 5214 cur_proc_ptr->pdr.gp_prologue = 0; 5215 } 5216 5217 cur_proc_ptr->pdr.gp_used = 1; 5218 } 5219 5220 int 5221 ecoff_no_current_file (void) 5222 { 5223 return cur_file_ptr == (efdr_t *) NULL; 5224 } 5225 5226 void 5227 ecoff_generate_asm_lineno (void) 5228 { 5229 unsigned int lineno; 5230 const char *filename; 5231 lineno_list_t *list; 5232 5233 filename = as_where (&lineno); 5234 5235 if (current_stabs_filename == (char *) NULL 5236 || filename_cmp (current_stabs_filename, filename)) 5237 add_file (filename, 0, 1); 5238 5239 list = allocate_lineno_list (); 5240 5241 list->next = (lineno_list_t *) NULL; 5242 list->file = cur_file_ptr; 5243 list->proc = cur_proc_ptr; 5244 list->frag = frag_now; 5245 list->paddr = frag_now_fix (); 5246 list->lineno = lineno; 5247 5248 /* We don't want to merge files which have line numbers. */ 5249 cur_file_ptr->fdr.fMerge = 0; 5250 5251 /* A .loc directive will sometimes appear before a .ent directive, 5252 which means that cur_proc_ptr will be NULL here. Arrange to 5253 patch this up. */ 5254 if (cur_proc_ptr == (proc_t *) NULL) 5255 { 5256 lineno_list_t **pl; 5257 5258 pl = &noproc_lineno; 5259 while (*pl != (lineno_list_t *) NULL) 5260 pl = &(*pl)->next; 5261 *pl = list; 5262 } 5263 else 5264 { 5265 last_lineno = list; 5266 *last_lineno_ptr = list; 5267 last_lineno_ptr = &list->next; 5268 } 5269 } 5270 5271 #else 5272 5273 void 5274 ecoff_generate_asm_lineno (void) 5275 { 5276 } 5277 5278 #endif /* ECOFF_DEBUGGING */ 5279
Indexes created Sun Mar 15 00:25:29 UTC 2026