1 /* ECOFF debugging support. 2 Copyright (C) 1993-2014 Free Software Foundation, Inc. 3 Contributed by Cygnus Support. 4 This file was put together by Ian Lance Taylor <ian (at) cygnus.com>. A 5 good deal of it comes directly from mips-tfile.c, by Michael 6 Meissner <meissner (at) osf.org>. 7 8 This file is part of GAS. 9 10 GAS is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 GAS is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with GAS; see the file COPYING. If not, write to the Free 22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 23 02110-1301, USA. */ 24 25 #include "as.h" 26 27 /* This file is compiled conditionally for those targets which use 28 ECOFF debugging information (e.g., MIPS ELF, Alpha ECOFF). */ 29 30 #include "ecoff.h" 31 32 #ifdef ECOFF_DEBUGGING 33 34 #include "coff/internal.h" 35 #include "coff/symconst.h" 36 #include "aout/stab_gnu.h" 37 #include "filenames.h" 38 #include "safe-ctype.h" 39 40 /* Why isn't this in coff/sym.h? */ 41 #define ST_RFDESCAPE 0xfff 42 43 /* This file constructs the information used by the ECOFF debugging 44 format. It just builds a large block of data. 45 46 We support both ECOFF style debugging and stabs debugging (the 47 stabs symbols are encapsulated in ECOFF symbols). This should let 48 us handle anything the compiler might throw at us. */ 49 50 /* Here is a brief description of the MIPS ECOFF symbol table, by 51 Michael Meissner. The MIPS symbol table has the following pieces: 52 53 Symbolic Header 54 | 55 +-- Auxiliary Symbols 56 | 57 +-- Dense number table 58 | 59 +-- Optimizer Symbols 60 | 61 +-- External Strings 62 | 63 +-- External Symbols 64 | 65 +-- Relative file descriptors 66 | 67 +-- File table 68 | 69 +-- Procedure table 70 | 71 +-- Line number table 72 | 73 +-- Local Strings 74 | 75 +-- Local Symbols 76 77 The symbolic header points to each of the other tables, and also 78 contains the number of entries. It also contains a magic number 79 and MIPS compiler version number, such as 2.0. 80 81 The auxiliary table is a series of 32 bit integers, that are 82 referenced as needed from the local symbol table. Unlike standard 83 COFF, the aux. information does not follow the symbol that uses 84 it, but rather is a separate table. In theory, this would allow 85 the MIPS compilers to collapse duplicate aux. entries, but I've not 86 noticed this happening with the 1.31 compiler suite. The different 87 types of aux. entries are: 88 89 1) dnLow: Low bound on array dimension. 90 91 2) dnHigh: High bound on array dimension. 92 93 3) isym: Index to the local symbol which is the start of the 94 function for the end of function first aux. entry. 95 96 4) width: Width of structures and bitfields. 97 98 5) count: Count of ranges for variant part. 99 100 6) rndx: A relative index into the symbol table. The relative 101 index field has two parts: rfd which is a pointer into the 102 relative file index table or ST_RFDESCAPE which says the next 103 aux. entry is the file number, and index: which is the pointer 104 into the local symbol within a given file table. This is for 105 things like references to types defined in another file. 106 107 7) Type information: This is like the COFF type bits, except it 108 is 32 bits instead of 16; they still have room to add new 109 basic types; and they can handle more than 6 levels of array, 110 pointer, function, etc. Each type information field contains 111 the following structure members: 112 113 a) fBitfield: a bit that says this is a bitfield, and the 114 size in bits follows as the next aux. entry. 115 116 b) continued: a bit that says the next aux. entry is a 117 continuation of the current type information (in case 118 there are more than 6 levels of array/ptr/function). 119 120 c) bt: an integer containing the base type before adding 121 array, pointer, function, etc. qualifiers. The 122 current base types that I have documentation for are: 123 124 btNil -- undefined 125 btAdr -- address - integer same size as ptr 126 btChar -- character 127 btUChar -- unsigned character 128 btShort -- short 129 btUShort -- unsigned short 130 btInt -- int 131 btUInt -- unsigned int 132 btLong -- long 133 btULong -- unsigned long 134 btFloat -- float (real) 135 btDouble -- Double (real) 136 btStruct -- Structure (Record) 137 btUnion -- Union (variant) 138 btEnum -- Enumerated 139 btTypedef -- defined via a typedef isymRef 140 btRange -- subrange of int 141 btSet -- pascal sets 142 btComplex -- fortran complex 143 btDComplex -- fortran double complex 144 btIndirect -- forward or unnamed typedef 145 btFixedDec -- Fixed Decimal 146 btFloatDec -- Float Decimal 147 btString -- Varying Length Character String 148 btBit -- Aligned Bit String 149 btPicture -- Picture 150 btVoid -- Void (MIPS cc revision >= 2.00) 151 152 d) tq0 - tq5: type qualifier fields as needed. The 153 current type qualifier fields I have documentation for 154 are: 155 156 tqNil -- no more qualifiers 157 tqPtr -- pointer 158 tqProc -- procedure 159 tqArray -- array 160 tqFar -- 8086 far pointers 161 tqVol -- volatile 162 163 The dense number table is used in the front ends, and disappears by 164 the time the .o is created. 165 166 With the 1.31 compiler suite, the optimization symbols don't seem 167 to be used as far as I can tell. 168 169 The linker is the first entity that creates the relative file 170 descriptor table, and I believe it is used so that the individual 171 file table pointers don't have to be rewritten when the objects are 172 merged together into the program file. 173 174 Unlike COFF, the basic symbol & string tables are split into 175 external and local symbols/strings. The relocation information 176 only goes off of the external symbol table, and the debug 177 information only goes off of the internal symbol table. The 178 external symbols can have links to an appropriate file index and 179 symbol within the file to give it the appropriate type information. 180 Because of this, the external symbols are actually larger than the 181 internal symbols (to contain the link information), and contain the 182 local symbol structure as a member, though this member is not the 183 first member of the external symbol structure (!). I suspect this 184 split is to make strip easier to deal with. 185 186 Each file table has offsets for where the line numbers, local 187 strings, local symbols, and procedure table starts from within the 188 global tables, and the indexs are reset to 0 for each of those 189 tables for the file. 190 191 The procedure table contains the binary equivalents of the .ent 192 (start of the function address), .frame (what register is the 193 virtual frame pointer, constant offset from the register to obtain 194 the VFP, and what register holds the return address), .mask/.fmask 195 (bitmask of saved registers, and where the first register is stored 196 relative to the VFP) assembler directives. It also contains the 197 low and high bounds of the line numbers if debugging is turned on. 198 199 The line number table is a compressed form of the normal COFF line 200 table. Each line number entry is either 1 or 3 bytes long, and 201 contains a signed delta from the previous line, and an unsigned 202 count of the number of instructions this statement takes. 203 204 The local symbol table contains the following fields: 205 206 1) iss: index to the local string table giving the name of the 207 symbol. 208 209 2) value: value of the symbol (address, register number, etc.). 210 211 3) st: symbol type. The current symbol types are: 212 213 stNil -- Nuthin' special 214 stGlobal -- external symbol 215 stStatic -- static 216 stParam -- procedure argument 217 stLocal -- local variable 218 stLabel -- label 219 stProc -- External Procedure 220 stBlock -- beginning of block 221 stEnd -- end (of anything) 222 stMember -- member (of anything) 223 stTypedef -- type definition 224 stFile -- file name 225 stRegReloc -- register relocation 226 stForward -- forwarding address 227 stStaticProc -- Static procedure 228 stConstant -- const 229 230 4) sc: storage class. The current storage classes are: 231 232 scText -- text symbol 233 scData -- initialized data symbol 234 scBss -- un-initialized data symbol 235 scRegister -- value of symbol is register number 236 scAbs -- value of symbol is absolute 237 scUndefined -- who knows? 238 scCdbLocal -- variable's value is IN se->va.?? 239 scBits -- this is a bit field 240 scCdbSystem -- value is IN debugger's address space 241 scRegImage -- register value saved on stack 242 scInfo -- symbol contains debugger information 243 scUserStruct -- addr in struct user for current process 244 scSData -- load time only small data 245 scSBss -- load time only small common 246 scRData -- load time only read only data 247 scVar -- Var parameter (fortranpascal) 248 scCommon -- common variable 249 scSCommon -- small common 250 scVarRegister -- Var parameter in a register 251 scVariant -- Variant record 252 scSUndefined -- small undefined(external) data 253 scInit -- .init section symbol 254 255 5) index: pointer to a local symbol or aux. entry. 256 257 For the following program: 258 259 #include <stdio.h> 260 261 main(){ 262 printf("Hello World!\n"); 263 return 0; 264 } 265 266 Mips-tdump produces the following information: 267 268 Global file header: 269 magic number 0x162 270 # sections 2 271 timestamp 645311799, Wed Jun 13 17:16:39 1990 272 symbolic header offset 284 273 symbolic header size 96 274 optional header 56 275 flags 0x0 276 277 Symbolic header, magic number = 0x7009, vstamp = 1.31: 278 279 Info Offset Number Bytes 280 ==== ====== ====== ===== 281 282 Line numbers 380 4 4 [13] 283 Dense numbers 0 0 0 284 Procedures Tables 384 1 52 285 Local Symbols 436 16 192 286 Optimization Symbols 0 0 0 287 Auxiliary Symbols 628 39 156 288 Local Strings 784 80 80 289 External Strings 864 144 144 290 File Tables 1008 2 144 291 Relative Files 0 0 0 292 External Symbols 1152 20 320 293 294 File #0, "hello2.c" 295 296 Name index = 1 Readin = No 297 Merge = No Endian = LITTLE 298 Debug level = G2 Language = C 299 Adr = 0x00000000 300 301 Info Start Number Size Offset 302 ==== ===== ====== ==== ====== 303 Local strings 0 15 15 784 304 Local symbols 0 6 72 436 305 Line numbers 0 13 13 380 306 Optimization symbols 0 0 0 0 307 Procedures 0 1 52 384 308 Auxiliary symbols 0 14 56 628 309 Relative Files 0 0 0 0 310 311 There are 6 local symbols, starting at 436 312 313 Symbol# 0: "hello2.c" 314 End+1 symbol = 6 315 String index = 1 316 Storage class = Text Index = 6 317 Symbol type = File Value = 0 318 319 Symbol# 1: "main" 320 End+1 symbol = 5 321 Type = int 322 String index = 10 323 Storage class = Text Index = 12 324 Symbol type = Proc Value = 0 325 326 Symbol# 2: "" 327 End+1 symbol = 4 328 String index = 0 329 Storage class = Text Index = 4 330 Symbol type = Block Value = 8 331 332 Symbol# 3: "" 333 First symbol = 2 334 String index = 0 335 Storage class = Text Index = 2 336 Symbol type = End Value = 28 337 338 Symbol# 4: "main" 339 First symbol = 1 340 String index = 10 341 Storage class = Text Index = 1 342 Symbol type = End Value = 52 343 344 Symbol# 5: "hello2.c" 345 First symbol = 0 346 String index = 1 347 Storage class = Text Index = 0 348 Symbol type = End Value = 0 349 350 There are 14 auxiliary table entries, starting at 628. 351 352 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 353 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 354 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0] 355 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0] 356 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 357 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0] 358 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0] 359 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0] 360 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0] 361 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0] 362 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0] 363 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0] 364 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0] 365 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 366 367 There are 1 procedure descriptor entries, starting at 0. 368 369 Procedure descriptor 0: 370 Name index = 10 Name = "main" 371 .mask 0x80000000,-4 .fmask 0x00000000,0 372 .frame $29,24,$31 373 Opt. start = -1 Symbols start = 1 374 First line # = 3 Last line # = 6 375 Line Offset = 0 Address = 0x00000000 376 377 There are 4 bytes holding line numbers, starting at 380. 378 Line 3, delta 0, count 2 379 Line 4, delta 1, count 3 380 Line 5, delta 1, count 2 381 Line 6, delta 1, count 6 382 383 File #1, "/usr/include/stdio.h" 384 385 Name index = 1 Readin = No 386 Merge = Yes Endian = LITTLE 387 Debug level = G2 Language = C 388 Adr = 0x00000000 389 390 Info Start Number Size Offset 391 ==== ===== ====== ==== ====== 392 Local strings 15 65 65 799 393 Local symbols 6 10 120 508 394 Line numbers 0 0 0 380 395 Optimization symbols 0 0 0 0 396 Procedures 1 0 0 436 397 Auxiliary symbols 14 25 100 684 398 Relative Files 0 0 0 0 399 400 There are 10 local symbols, starting at 442 401 402 Symbol# 0: "/usr/include/stdio.h" 403 End+1 symbol = 10 404 String index = 1 405 Storage class = Text Index = 10 406 Symbol type = File Value = 0 407 408 Symbol# 1: "_iobuf" 409 End+1 symbol = 9 410 String index = 22 411 Storage class = Info Index = 9 412 Symbol type = Block Value = 20 413 414 Symbol# 2: "_cnt" 415 Type = int 416 String index = 29 417 Storage class = Info Index = 4 418 Symbol type = Member Value = 0 419 420 Symbol# 3: "_ptr" 421 Type = ptr to char 422 String index = 34 423 Storage class = Info Index = 15 424 Symbol type = Member Value = 32 425 426 Symbol# 4: "_base" 427 Type = ptr to char 428 String index = 39 429 Storage class = Info Index = 16 430 Symbol type = Member Value = 64 431 432 Symbol# 5: "_bufsiz" 433 Type = int 434 String index = 45 435 Storage class = Info Index = 4 436 Symbol type = Member Value = 96 437 438 Symbol# 6: "_flag" 439 Type = short 440 String index = 53 441 Storage class = Info Index = 3 442 Symbol type = Member Value = 128 443 444 Symbol# 7: "_file" 445 Type = char 446 String index = 59 447 Storage class = Info Index = 2 448 Symbol type = Member Value = 144 449 450 Symbol# 8: "" 451 First symbol = 1 452 String index = 0 453 Storage class = Info Index = 1 454 Symbol type = End Value = 0 455 456 Symbol# 9: "/usr/include/stdio.h" 457 First symbol = 0 458 String index = 1 459 Storage class = Text Index = 0 460 Symbol type = End Value = 0 461 462 There are 25 auxiliary table entries, starting at 642. 463 464 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f] 465 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] 466 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] 467 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0] 468 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1] 469 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] 470 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4] 471 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] 472 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 473 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0] 474 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0] 475 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 476 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 477 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 478 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 479 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 480 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 481 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 482 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 483 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 484 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 485 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 486 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 487 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 488 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 489 490 There are 0 procedure descriptor entries, starting at 1. 491 492 There are 20 external symbols, starting at 1152 493 494 Symbol# 0: "_iob" 495 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 } 496 String index = 0 Ifd = 1 497 Storage class = Nil Index = 17 498 Symbol type = Global Value = 60 499 500 Symbol# 1: "fopen" 501 String index = 5 Ifd = 1 502 Storage class = Nil Index = 1048575 503 Symbol type = Proc Value = 0 504 505 Symbol# 2: "fdopen" 506 String index = 11 Ifd = 1 507 Storage class = Nil Index = 1048575 508 Symbol type = Proc Value = 0 509 510 Symbol# 3: "freopen" 511 String index = 18 Ifd = 1 512 Storage class = Nil Index = 1048575 513 Symbol type = Proc Value = 0 514 515 Symbol# 4: "popen" 516 String index = 26 Ifd = 1 517 Storage class = Nil Index = 1048575 518 Symbol type = Proc Value = 0 519 520 Symbol# 5: "tmpfile" 521 String index = 32 Ifd = 1 522 Storage class = Nil Index = 1048575 523 Symbol type = Proc Value = 0 524 525 Symbol# 6: "ftell" 526 String index = 40 Ifd = 1 527 Storage class = Nil Index = 1048575 528 Symbol type = Proc Value = 0 529 530 Symbol# 7: "rewind" 531 String index = 46 Ifd = 1 532 Storage class = Nil Index = 1048575 533 Symbol type = Proc Value = 0 534 535 Symbol# 8: "setbuf" 536 String index = 53 Ifd = 1 537 Storage class = Nil Index = 1048575 538 Symbol type = Proc Value = 0 539 540 Symbol# 9: "setbuffer" 541 String index = 60 Ifd = 1 542 Storage class = Nil Index = 1048575 543 Symbol type = Proc Value = 0 544 545 Symbol# 10: "setlinebuf" 546 String index = 70 Ifd = 1 547 Storage class = Nil Index = 1048575 548 Symbol type = Proc Value = 0 549 550 Symbol# 11: "fgets" 551 String index = 81 Ifd = 1 552 Storage class = Nil Index = 1048575 553 Symbol type = Proc Value = 0 554 555 Symbol# 12: "gets" 556 String index = 87 Ifd = 1 557 Storage class = Nil Index = 1048575 558 Symbol type = Proc Value = 0 559 560 Symbol# 13: "ctermid" 561 String index = 92 Ifd = 1 562 Storage class = Nil Index = 1048575 563 Symbol type = Proc Value = 0 564 565 Symbol# 14: "cuserid" 566 String index = 100 Ifd = 1 567 Storage class = Nil Index = 1048575 568 Symbol type = Proc Value = 0 569 570 Symbol# 15: "tempnam" 571 String index = 108 Ifd = 1 572 Storage class = Nil Index = 1048575 573 Symbol type = Proc Value = 0 574 575 Symbol# 16: "tmpnam" 576 String index = 116 Ifd = 1 577 Storage class = Nil Index = 1048575 578 Symbol type = Proc Value = 0 579 580 Symbol# 17: "sprintf" 581 String index = 123 Ifd = 1 582 Storage class = Nil Index = 1048575 583 Symbol type = Proc Value = 0 584 585 Symbol# 18: "main" 586 Type = int 587 String index = 131 Ifd = 0 588 Storage class = Text Index = 1 589 Symbol type = Proc Value = 0 590 591 Symbol# 19: "printf" 592 String index = 136 Ifd = 0 593 Storage class = Undefined Index = 1048575 594 Symbol type = Proc Value = 0 595 596 The following auxiliary table entries were unused: 597 598 #0 0 0x00000000 void 599 #2 8 0x00000008 char 600 #3 16 0x00000010 short 601 #4 24 0x00000018 int 602 #5 32 0x00000020 long 603 #6 40 0x00000028 float 604 #7 44 0x0000002c double 605 #8 12 0x0000000c unsigned char 606 #9 20 0x00000014 unsigned short 607 #10 28 0x0000001c unsigned int 608 #11 36 0x00000024 unsigned long 609 #14 0 0x00000000 void 610 #15 24 0x00000018 int 611 #19 32 0x00000020 long 612 #20 40 0x00000028 float 613 #21 44 0x0000002c double 614 #22 12 0x0000000c unsigned char 615 #23 20 0x00000014 unsigned short 616 #24 28 0x0000001c unsigned int 617 #25 36 0x00000024 unsigned long 618 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 } 619 */ 620 621 /* Redefinition of of storage classes as an enumeration for better 623 debugging. */ 624 625 typedef enum sc { 626 sc_Nil = scNil, /* no storage class */ 627 sc_Text = scText, /* text symbol */ 628 sc_Data = scData, /* initialized data symbol */ 629 sc_Bss = scBss, /* un-initialized data symbol */ 630 sc_Register = scRegister, /* value of symbol is register number */ 631 sc_Abs = scAbs, /* value of symbol is absolute */ 632 sc_Undefined = scUndefined, /* who knows? */ 633 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */ 634 sc_Bits = scBits, /* this is a bit field */ 635 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */ 636 sc_RegImage = scRegImage, /* register value saved on stack */ 637 sc_Info = scInfo, /* symbol contains debugger information */ 638 sc_UserStruct = scUserStruct, /* addr in struct user for current process */ 639 sc_SData = scSData, /* load time only small data */ 640 sc_SBss = scSBss, /* load time only small common */ 641 sc_RData = scRData, /* load time only read only data */ 642 sc_Var = scVar, /* Var parameter (fortran,pascal) */ 643 sc_Common = scCommon, /* common variable */ 644 sc_SCommon = scSCommon, /* small common */ 645 sc_VarRegister = scVarRegister, /* Var parameter in a register */ 646 sc_Variant = scVariant, /* Variant record */ 647 sc_SUndefined = scSUndefined, /* small undefined(external) data */ 648 sc_Init = scInit, /* .init section symbol */ 649 sc_Max = scMax /* Max storage class+1 */ 650 } sc_t; 651 652 /* Redefinition of symbol type. */ 653 654 typedef enum st { 655 st_Nil = stNil, /* Nuthin' special */ 656 st_Global = stGlobal, /* external symbol */ 657 st_Static = stStatic, /* static */ 658 st_Param = stParam, /* procedure argument */ 659 st_Local = stLocal, /* local variable */ 660 st_Label = stLabel, /* label */ 661 st_Proc = stProc, /* " " Procedure */ 662 st_Block = stBlock, /* beginning of block */ 663 st_End = stEnd, /* end (of anything) */ 664 st_Member = stMember, /* member (of anything - struct/union/enum */ 665 st_Typedef = stTypedef, /* type definition */ 666 st_File = stFile, /* file name */ 667 st_RegReloc = stRegReloc, /* register relocation */ 668 st_Forward = stForward, /* forwarding address */ 669 st_StaticProc = stStaticProc, /* load time only static procs */ 670 st_Constant = stConstant, /* const */ 671 st_Str = stStr, /* string */ 672 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */ 673 st_Expr = stExpr, /* 2+2 vs. 4 */ 674 st_Type = stType, /* post-coercion SER */ 675 st_Max = stMax /* max type+1 */ 676 } st_t; 677 678 /* Redefinition of type qualifiers. */ 679 680 typedef enum tq { 681 tq_Nil = tqNil, /* bt is what you see */ 682 tq_Ptr = tqPtr, /* pointer */ 683 tq_Proc = tqProc, /* procedure */ 684 tq_Array = tqArray, /* duh */ 685 tq_Far = tqFar, /* longer addressing - 8086/8 land */ 686 tq_Vol = tqVol, /* volatile */ 687 tq_Max = tqMax /* Max type qualifier+1 */ 688 } tq_t; 689 690 /* Redefinition of basic types. */ 691 692 typedef enum bt { 693 bt_Nil = btNil, /* undefined */ 694 bt_Adr = btAdr, /* address - integer same size as pointer */ 695 bt_Char = btChar, /* character */ 696 bt_UChar = btUChar, /* unsigned character */ 697 bt_Short = btShort, /* short */ 698 bt_UShort = btUShort, /* unsigned short */ 699 bt_Int = btInt, /* int */ 700 bt_UInt = btUInt, /* unsigned int */ 701 bt_Long = btLong, /* long */ 702 bt_ULong = btULong, /* unsigned long */ 703 bt_Float = btFloat, /* float (real) */ 704 bt_Double = btDouble, /* Double (real) */ 705 bt_Struct = btStruct, /* Structure (Record) */ 706 bt_Union = btUnion, /* Union (variant) */ 707 bt_Enum = btEnum, /* Enumerated */ 708 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */ 709 bt_Range = btRange, /* subrange of int */ 710 bt_Set = btSet, /* pascal sets */ 711 bt_Complex = btComplex, /* fortran complex */ 712 bt_DComplex = btDComplex, /* fortran double complex */ 713 bt_Indirect = btIndirect, /* forward or unnamed typedef */ 714 bt_FixedDec = btFixedDec, /* Fixed Decimal */ 715 bt_FloatDec = btFloatDec, /* Float Decimal */ 716 bt_String = btString, /* Varying Length Character String */ 717 bt_Bit = btBit, /* Aligned Bit String */ 718 bt_Picture = btPicture, /* Picture */ 719 bt_Void = btVoid, /* Void */ 720 bt_Max = btMax /* Max basic type+1 */ 721 } bt_t; 722 723 #define N_TQ itqMax 724 725 /* States for whether to hash type or not. */ 726 typedef enum hash_state { 727 hash_no = 0, /* Don't hash type */ 728 hash_yes = 1, /* OK to hash type, or use previous hash */ 729 hash_record = 2 /* OK to record hash, but don't use prev. */ 730 } hash_state_t; 731 732 /* Types of different sized allocation requests. */ 733 enum alloc_type { 734 alloc_type_none, /* dummy value */ 735 alloc_type_scope, /* nested scopes linked list */ 736 alloc_type_vlinks, /* glue linking pages in varray */ 737 alloc_type_shash, /* string hash element */ 738 alloc_type_thash, /* type hash element */ 739 alloc_type_tag, /* struct/union/tag element */ 740 alloc_type_forward, /* element to hold unknown tag */ 741 alloc_type_thead, /* head of type hash list */ 742 alloc_type_varray, /* general varray allocation */ 743 alloc_type_lineno, /* line number list */ 744 alloc_type_last /* last+1 element for array bounds */ 745 }; 746 747 /* Types of auxiliary type information. */ 748 enum aux_type { 749 aux_tir, /* TIR type information */ 750 aux_rndx, /* relative index into symbol table */ 751 aux_dnLow, /* low dimension */ 752 aux_dnHigh, /* high dimension */ 753 aux_isym, /* symbol table index (end of proc) */ 754 aux_iss, /* index into string space (not used) */ 755 aux_width, /* width for non-default sized struc fields */ 756 aux_count /* count of ranges for variant arm */ 757 }; 758 759 /* Structures to provide n-number of virtual arrays, each of which can 761 grow linearly, and which are written in the object file as 762 sequential pages. On systems with a BSD malloc, the 763 MAX_CLUSTER_PAGES should be 1 less than a power of two, since 764 malloc adds it's overhead, and rounds up to the next power of 2. 765 Pages are linked together via a linked list. 766 767 If PAGE_SIZE is > 4096, the string length in the shash_t structure 768 can't be represented (assuming there are strings > 4096 bytes). */ 769 770 /* FIXME: Yes, there can be such strings while emitting C++ class debug 771 info. Templates are the offender here, the test case in question 772 having a mangled class name of 773 774 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\ 775 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey 776 777 Repeat that a couple dozen times while listing the class members and 778 you've got strings over 4k. Hack around this for now by increasing 779 the page size. A proper solution would abandon this structure scheme 780 certainly for very large strings, and possibly entirely. */ 781 782 #ifndef PAGE_SIZE 783 #define PAGE_SIZE (8*1024) /* size of varray pages */ 784 #endif 785 786 #define PAGE_USIZE ((unsigned long) PAGE_SIZE) 787 788 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */ 789 #define MAX_CLUSTER_PAGES 63 790 #endif 791 792 /* Linked list connecting separate page allocations. */ 793 typedef struct vlinks { 794 struct vlinks *prev; /* previous set of pages */ 795 struct vlinks *next; /* next set of pages */ 796 union page *datum; /* start of page */ 797 unsigned long start_index; /* starting index # of page */ 798 } vlinks_t; 799 800 /* Virtual array header. */ 801 typedef struct varray { 802 vlinks_t *first; /* first page link */ 803 vlinks_t *last; /* last page link */ 804 unsigned long num_allocated; /* # objects allocated */ 805 unsigned short object_size; /* size in bytes of each object */ 806 unsigned short objects_per_page; /* # objects that can fit on a page */ 807 unsigned short objects_last_page; /* # objects allocated on last page */ 808 } varray_t; 809 810 #ifndef MALLOC_CHECK 811 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type)) 812 #else 813 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE) 814 #endif 815 816 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \ 817 (vlinks_t *)0, /* first */ \ 818 (vlinks_t *)0, /* last */ \ 819 0, /* num_allocated */ \ 820 sizeof (type), /* object_size */ \ 821 OBJECTS_PER_PAGE (type), /* objects_per_page */ \ 822 OBJECTS_PER_PAGE (type), /* objects_last_page */ \ 823 } 824 825 /* Master type for indexes within the symbol table. */ 826 typedef unsigned long symint_t; 827 828 /* Linked list support for nested scopes (file, block, structure, etc.). */ 829 typedef struct scope { 830 struct scope *prev; /* previous scope level */ 831 struct scope *free; /* free list pointer */ 832 struct localsym *lsym; /* pointer to local symbol node */ 833 st_t type; /* type of the node */ 834 } scope_t; 835 836 /* For a local symbol we store a gas symbol as well as the debugging 837 information we generate. The gas symbol will be NULL if this is 838 only a debugging symbol. */ 839 typedef struct localsym { 840 const char *name; /* symbol name */ 841 symbolS *as_sym; /* symbol as seen by gas */ 842 bfd_vma addend; /* addend to as_sym value */ 843 struct efdr *file_ptr; /* file pointer */ 844 struct ecoff_proc *proc_ptr; /* proc pointer */ 845 struct localsym *begin_ptr; /* symbol at start of block */ 846 struct ecoff_aux *index_ptr; /* index value to be filled in */ 847 struct forward *forward_ref; /* forward references to this symbol */ 848 long sym_index; /* final symbol index */ 849 EXTR ecoff_sym; /* ECOFF debugging symbol */ 850 } localsym_t; 851 852 /* For aux information we keep the type and the data. */ 853 typedef struct ecoff_aux { 854 enum aux_type type; /* aux type */ 855 AUXU data; /* aux data */ 856 } aux_t; 857 858 /* For a procedure we store the gas symbol as well as the PDR 859 debugging information. */ 860 typedef struct ecoff_proc { 861 localsym_t *sym; /* associated symbol */ 862 PDR pdr; /* ECOFF debugging info */ 863 } proc_t; 864 865 /* Number of proc_t structures allocated. */ 866 static unsigned long proc_cnt; 867 868 /* Forward reference list for tags referenced, but not yet defined. */ 869 typedef struct forward { 870 struct forward *next; /* next forward reference */ 871 struct forward *free; /* free list pointer */ 872 aux_t *ifd_ptr; /* pointer to store file index */ 873 aux_t *index_ptr; /* pointer to store symbol index */ 874 } forward_t; 875 876 /* Linked list support for tags. The first tag in the list is always 877 the current tag for that block. */ 878 typedef struct tag { 879 struct tag *free; /* free list pointer */ 880 struct shash *hash_ptr; /* pointer to the hash table head */ 881 struct tag *same_name; /* tag with same name in outer scope */ 882 struct tag *same_block; /* next tag defined in the same block. */ 883 struct forward *forward_ref; /* list of forward references */ 884 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */ 885 symint_t ifd; /* file # tag defined in */ 886 localsym_t *sym; /* file's local symbols */ 887 } tag_t; 888 889 /* Head of a block's linked list of tags. */ 890 typedef struct thead { 891 struct thead *prev; /* previous block */ 892 struct thead *free; /* free list pointer */ 893 struct tag *first_tag; /* first tag in block defined */ 894 } thead_t; 895 896 /* Union containing pointers to each the small structures which are freed up. */ 897 typedef union small_free { 898 scope_t *f_scope; /* scope structure */ 899 thead_t *f_thead; /* tag head structure */ 900 tag_t *f_tag; /* tag element structure */ 901 forward_t *f_forward; /* forward tag reference */ 902 } small_free_t; 903 904 /* String hash table entry. */ 905 906 typedef struct shash { 907 char *string; /* string we are hashing */ 908 symint_t indx; /* index within string table */ 909 EXTR *esym_ptr; /* global symbol pointer */ 910 localsym_t *sym_ptr; /* local symbol pointer */ 911 localsym_t *end_ptr; /* symbol pointer to end block */ 912 tag_t *tag_ptr; /* tag pointer */ 913 proc_t *proc_ptr; /* procedure descriptor pointer */ 914 } shash_t; 915 916 /* Type hash table support. The size of the hash table must fit 917 within a page with the other extended file descriptor information. 918 Because unique types which are hashed are fewer in number than 919 strings, we use a smaller hash value. */ 920 921 #define HASHBITS 30 922 923 #ifndef THASH_SIZE 924 #define THASH_SIZE 113 925 #endif 926 927 typedef struct thash { 928 struct thash *next; /* next hash value */ 929 AUXU type; /* type we are hashing */ 930 symint_t indx; /* index within string table */ 931 } thash_t; 932 933 /* Extended file descriptor that contains all of the support necessary 934 to add things to each file separately. */ 935 typedef struct efdr { 936 FDR fdr; /* File header to be written out */ 937 FDR *orig_fdr; /* original file header */ 938 char *name; /* filename */ 939 int fake; /* whether this is faked .file */ 940 symint_t void_type; /* aux. pointer to 'void' type */ 941 symint_t int_type; /* aux. pointer to 'int' type */ 942 scope_t *cur_scope; /* current nested scopes */ 943 symint_t file_index; /* current file number */ 944 int nested_scopes; /* # nested scopes */ 945 varray_t strings; /* local strings */ 946 varray_t symbols; /* local symbols */ 947 varray_t procs; /* procedures */ 948 varray_t aux_syms; /* auxiliary symbols */ 949 struct efdr *next_file; /* next file descriptor */ 950 /* string/type hash tables */ 951 struct hash_control *str_hash; /* string hash table */ 952 thash_t *thash_head[THASH_SIZE]; 953 } efdr_t; 954 955 /* Pre-initialized extended file structure. */ 956 static const efdr_t init_file = { 957 { /* FDR structure */ 958 0, /* adr: memory address of beginning of file */ 959 0, /* rss: file name (of source, if known) */ 960 0, /* issBase: file's string space */ 961 0, /* cbSs: number of bytes in the ss */ 962 0, /* isymBase: beginning of symbols */ 963 0, /* csym: count file's of symbols */ 964 0, /* ilineBase: file's line symbols */ 965 0, /* cline: count of file's line symbols */ 966 0, /* ioptBase: file's optimization entries */ 967 0, /* copt: count of file's optimization entries */ 968 0, /* ipdFirst: start of procedures for this file */ 969 0, /* cpd: count of procedures for this file */ 970 0, /* iauxBase: file's auxiliary entries */ 971 0, /* caux: count of file's auxiliary entries */ 972 0, /* rfdBase: index into the file indirect table */ 973 0, /* crfd: count file indirect entries */ 974 langC, /* lang: language for this file */ 975 1, /* fMerge: whether this file can be merged */ 976 0, /* fReadin: true if read in (not just created) */ 977 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */ 978 GLEVEL_2, /* glevel: level this file was compiled with */ 979 0, /* reserved: reserved for future use */ 980 0, /* cbLineOffset: byte offset from header for this file ln's */ 981 0, /* cbLine: size of lines for this file */ 982 }, 983 984 (FDR *)0, /* orig_fdr: original file header pointer */ 985 (char *)0, /* name: pointer to filename */ 986 0, /* fake: whether this is a faked .file */ 987 0, /* void_type: ptr to aux node for void type */ 988 0, /* int_type: ptr to aux node for int type */ 989 (scope_t *)0, /* cur_scope: current scope being processed */ 990 0, /* file_index: current file # */ 991 0, /* nested_scopes: # nested scopes */ 992 INIT_VARRAY (char), /* strings: local string varray */ 993 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */ 994 INIT_VARRAY (proc_t), /* procs: procedure varray */ 995 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */ 996 997 (struct efdr *)0, /* next_file: next file structure */ 998 999 (struct hash_control *)0, /* str_hash: string hash table */ 1000 { 0 }, /* thash_head: type hash table */ 1001 }; 1002 1003 static efdr_t *first_file; /* first file descriptor */ 1004 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */ 1005 1006 /* Line number information is kept in a list until the assembly is 1007 finished. */ 1008 typedef struct lineno_list { 1009 struct lineno_list *next; /* next element in list */ 1010 efdr_t *file; /* file this line is in */ 1011 proc_t *proc; /* procedure this line is in */ 1012 fragS *frag; /* fragment this line number is in */ 1013 unsigned long paddr; /* offset within fragment */ 1014 long lineno; /* actual line number */ 1015 } lineno_list_t; 1016 1017 static lineno_list_t *first_lineno; 1018 static lineno_list_t *last_lineno; 1019 static lineno_list_t **last_lineno_ptr = &first_lineno; 1020 1021 /* Sometimes there will be some .loc statements before a .ent. We 1022 keep them in this list so that we can fill in the procedure pointer 1023 after we see the .ent. */ 1024 static lineno_list_t *noproc_lineno; 1025 1026 /* Union of various things that are held in pages. */ 1027 typedef union page { 1028 char byte [ PAGE_SIZE ]; 1029 unsigned char ubyte [ PAGE_SIZE ]; 1030 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ]; 1031 FDR ofile [ PAGE_SIZE / sizeof (FDR) ]; 1032 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ]; 1033 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ]; 1034 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ]; 1035 DNR dense [ PAGE_SIZE / sizeof (DNR) ]; 1036 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ]; 1037 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ]; 1038 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ]; 1039 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ]; 1040 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ]; 1041 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ]; 1042 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ]; 1043 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ]; 1044 } page_type; 1045 1046 /* Structure holding allocation information for small sized structures. */ 1047 typedef struct alloc_info { 1048 char *alloc_name; /* name of this allocation type (must be first) */ 1049 page_type *cur_page; /* current page being allocated from */ 1050 small_free_t free_list; /* current free list if any */ 1051 int unallocated; /* number of elements unallocated on page */ 1052 int total_alloc; /* total number of allocations */ 1053 int total_free; /* total number of frees */ 1054 int total_pages; /* total number of pages allocated */ 1055 } alloc_info_t; 1056 1057 /* Type information collected together. */ 1058 typedef struct type_info { 1059 bt_t basic_type; /* basic type */ 1060 int orig_type; /* original COFF-based type */ 1061 int num_tq; /* # type qualifiers */ 1062 int num_dims; /* # dimensions */ 1063 int num_sizes; /* # sizes */ 1064 int extra_sizes; /* # extra sizes not tied with dims */ 1065 tag_t * tag_ptr; /* tag pointer */ 1066 int bitfield; /* symbol is a bitfield */ 1067 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/ 1068 symint_t dimensions [N_TQ]; /* dimensions for each array */ 1069 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of 1070 struct/union/enum + bitfield size */ 1071 } type_info_t; 1072 1073 /* Pre-initialized type_info struct. */ 1074 static const type_info_t type_info_init = { 1075 bt_Nil, /* basic type */ 1076 T_NULL, /* original COFF-based type */ 1077 0, /* # type qualifiers */ 1078 0, /* # dimensions */ 1079 0, /* # sizes */ 1080 0, /* sizes not tied with dims */ 1081 NULL, /* ptr to tag */ 1082 0, /* bitfield */ 1083 { /* type qualifiers */ 1084 tq_Nil, 1085 tq_Nil, 1086 tq_Nil, 1087 tq_Nil, 1088 tq_Nil, 1089 tq_Nil, 1090 }, 1091 { /* dimensions */ 1092 0, 1093 0, 1094 0, 1095 0, 1096 0, 1097 0 1098 }, 1099 { /* sizes */ 1100 0, 1101 0, 1102 0, 1103 0, 1104 0, 1105 0, 1106 0, 1107 0, 1108 }, 1109 }; 1110 1111 /* Global hash table for the tags table and global table for file 1112 descriptors. */ 1113 1114 static varray_t file_desc = INIT_VARRAY (efdr_t); 1115 1116 static struct hash_control *tag_hash; 1117 1118 /* Static types for int and void. Also, remember the last function's 1119 type (which is set up when we encounter the declaration for the 1120 function, and used when the end block for the function is emitted. */ 1121 1122 static type_info_t int_type_info; 1123 static type_info_t void_type_info; 1124 static type_info_t last_func_type_info; 1125 static symbolS *last_func_sym_value; 1126 1127 /* Convert COFF basic type to ECOFF basic type. The T_NULL type 1128 really should use bt_Void, but this causes the current ecoff GDB to 1129 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS 1130 2.0) doesn't understand it, even though the compiler generates it. 1131 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler 1132 suite, but for now go with what works. 1133 1134 It would make sense for the .type and .scl directives to use the 1135 ECOFF numbers directly, rather than using the COFF numbers and 1136 mapping them. Unfortunately, this is historically what mips-tfile 1137 expects, and changing gcc now would be a considerable pain (the 1138 native compiler generates debugging information internally, rather 1139 than via the assembler, so it will never use .type or .scl). */ 1140 1141 static const bt_t map_coff_types[] = { 1142 bt_Nil, /* T_NULL */ 1143 bt_Nil, /* T_ARG */ 1144 bt_Char, /* T_CHAR */ 1145 bt_Short, /* T_SHORT */ 1146 bt_Int, /* T_INT */ 1147 bt_Long, /* T_LONG */ 1148 bt_Float, /* T_FLOAT */ 1149 bt_Double, /* T_DOUBLE */ 1150 bt_Struct, /* T_STRUCT */ 1151 bt_Union, /* T_UNION */ 1152 bt_Enum, /* T_ENUM */ 1153 bt_Enum, /* T_MOE */ 1154 bt_UChar, /* T_UCHAR */ 1155 bt_UShort, /* T_USHORT */ 1156 bt_UInt, /* T_UINT */ 1157 bt_ULong /* T_ULONG */ 1158 }; 1159 1160 /* Convert COFF storage class to ECOFF storage class. */ 1161 static const sc_t map_coff_storage[] = { 1162 sc_Nil, /* 0: C_NULL */ 1163 sc_Abs, /* 1: C_AUTO auto var */ 1164 sc_Undefined, /* 2: C_EXT external */ 1165 sc_Data, /* 3: C_STAT static */ 1166 sc_Register, /* 4: C_REG register */ 1167 sc_Undefined, /* 5: C_EXTDEF ??? */ 1168 sc_Text, /* 6: C_LABEL label */ 1169 sc_Text, /* 7: C_ULABEL user label */ 1170 sc_Info, /* 8: C_MOS member of struct */ 1171 sc_Abs, /* 9: C_ARG argument */ 1172 sc_Info, /* 10: C_STRTAG struct tag */ 1173 sc_Info, /* 11: C_MOU member of union */ 1174 sc_Info, /* 12: C_UNTAG union tag */ 1175 sc_Info, /* 13: C_TPDEF typedef */ 1176 sc_Data, /* 14: C_USTATIC ??? */ 1177 sc_Info, /* 15: C_ENTAG enum tag */ 1178 sc_Info, /* 16: C_MOE member of enum */ 1179 sc_Register, /* 17: C_REGPARM register parameter */ 1180 sc_Bits, /* 18; C_FIELD bitfield */ 1181 sc_Nil, /* 19 */ 1182 sc_Nil, /* 20 */ 1183 sc_Nil, /* 21 */ 1184 sc_Nil, /* 22 */ 1185 sc_Nil, /* 23 */ 1186 sc_Nil, /* 24 */ 1187 sc_Nil, /* 25 */ 1188 sc_Nil, /* 26 */ 1189 sc_Nil, /* 27 */ 1190 sc_Nil, /* 28 */ 1191 sc_Nil, /* 29 */ 1192 sc_Nil, /* 30 */ 1193 sc_Nil, /* 31 */ 1194 sc_Nil, /* 32 */ 1195 sc_Nil, /* 33 */ 1196 sc_Nil, /* 34 */ 1197 sc_Nil, /* 35 */ 1198 sc_Nil, /* 36 */ 1199 sc_Nil, /* 37 */ 1200 sc_Nil, /* 38 */ 1201 sc_Nil, /* 39 */ 1202 sc_Nil, /* 40 */ 1203 sc_Nil, /* 41 */ 1204 sc_Nil, /* 42 */ 1205 sc_Nil, /* 43 */ 1206 sc_Nil, /* 44 */ 1207 sc_Nil, /* 45 */ 1208 sc_Nil, /* 46 */ 1209 sc_Nil, /* 47 */ 1210 sc_Nil, /* 48 */ 1211 sc_Nil, /* 49 */ 1212 sc_Nil, /* 50 */ 1213 sc_Nil, /* 51 */ 1214 sc_Nil, /* 52 */ 1215 sc_Nil, /* 53 */ 1216 sc_Nil, /* 54 */ 1217 sc_Nil, /* 55 */ 1218 sc_Nil, /* 56 */ 1219 sc_Nil, /* 57 */ 1220 sc_Nil, /* 58 */ 1221 sc_Nil, /* 59 */ 1222 sc_Nil, /* 60 */ 1223 sc_Nil, /* 61 */ 1224 sc_Nil, /* 62 */ 1225 sc_Nil, /* 63 */ 1226 sc_Nil, /* 64 */ 1227 sc_Nil, /* 65 */ 1228 sc_Nil, /* 66 */ 1229 sc_Nil, /* 67 */ 1230 sc_Nil, /* 68 */ 1231 sc_Nil, /* 69 */ 1232 sc_Nil, /* 70 */ 1233 sc_Nil, /* 71 */ 1234 sc_Nil, /* 72 */ 1235 sc_Nil, /* 73 */ 1236 sc_Nil, /* 74 */ 1237 sc_Nil, /* 75 */ 1238 sc_Nil, /* 76 */ 1239 sc_Nil, /* 77 */ 1240 sc_Nil, /* 78 */ 1241 sc_Nil, /* 79 */ 1242 sc_Nil, /* 80 */ 1243 sc_Nil, /* 81 */ 1244 sc_Nil, /* 82 */ 1245 sc_Nil, /* 83 */ 1246 sc_Nil, /* 84 */ 1247 sc_Nil, /* 85 */ 1248 sc_Nil, /* 86 */ 1249 sc_Nil, /* 87 */ 1250 sc_Nil, /* 88 */ 1251 sc_Nil, /* 89 */ 1252 sc_Nil, /* 90 */ 1253 sc_Nil, /* 91 */ 1254 sc_Nil, /* 92 */ 1255 sc_Nil, /* 93 */ 1256 sc_Nil, /* 94 */ 1257 sc_Nil, /* 95 */ 1258 sc_Nil, /* 96 */ 1259 sc_Nil, /* 97 */ 1260 sc_Nil, /* 98 */ 1261 sc_Nil, /* 99 */ 1262 sc_Text, /* 100: C_BLOCK block start/end */ 1263 sc_Text, /* 101: C_FCN function start/end */ 1264 sc_Info, /* 102: C_EOS end of struct/union/enum */ 1265 sc_Nil, /* 103: C_FILE file start */ 1266 sc_Nil, /* 104: C_LINE line number */ 1267 sc_Nil, /* 105: C_ALIAS combined type info */ 1268 sc_Nil, /* 106: C_HIDDEN ??? */ 1269 }; 1270 1271 /* Convert COFF storage class to ECOFF symbol type. */ 1272 static const st_t map_coff_sym_type[] = { 1273 st_Nil, /* 0: C_NULL */ 1274 st_Local, /* 1: C_AUTO auto var */ 1275 st_Global, /* 2: C_EXT external */ 1276 st_Static, /* 3: C_STAT static */ 1277 st_Local, /* 4: C_REG register */ 1278 st_Global, /* 5: C_EXTDEF ??? */ 1279 st_Label, /* 6: C_LABEL label */ 1280 st_Label, /* 7: C_ULABEL user label */ 1281 st_Member, /* 8: C_MOS member of struct */ 1282 st_Param, /* 9: C_ARG argument */ 1283 st_Block, /* 10: C_STRTAG struct tag */ 1284 st_Member, /* 11: C_MOU member of union */ 1285 st_Block, /* 12: C_UNTAG union tag */ 1286 st_Typedef, /* 13: C_TPDEF typedef */ 1287 st_Static, /* 14: C_USTATIC ??? */ 1288 st_Block, /* 15: C_ENTAG enum tag */ 1289 st_Member, /* 16: C_MOE member of enum */ 1290 st_Param, /* 17: C_REGPARM register parameter */ 1291 st_Member, /* 18; C_FIELD bitfield */ 1292 st_Nil, /* 19 */ 1293 st_Nil, /* 20 */ 1294 st_Nil, /* 21 */ 1295 st_Nil, /* 22 */ 1296 st_Nil, /* 23 */ 1297 st_Nil, /* 24 */ 1298 st_Nil, /* 25 */ 1299 st_Nil, /* 26 */ 1300 st_Nil, /* 27 */ 1301 st_Nil, /* 28 */ 1302 st_Nil, /* 29 */ 1303 st_Nil, /* 30 */ 1304 st_Nil, /* 31 */ 1305 st_Nil, /* 32 */ 1306 st_Nil, /* 33 */ 1307 st_Nil, /* 34 */ 1308 st_Nil, /* 35 */ 1309 st_Nil, /* 36 */ 1310 st_Nil, /* 37 */ 1311 st_Nil, /* 38 */ 1312 st_Nil, /* 39 */ 1313 st_Nil, /* 40 */ 1314 st_Nil, /* 41 */ 1315 st_Nil, /* 42 */ 1316 st_Nil, /* 43 */ 1317 st_Nil, /* 44 */ 1318 st_Nil, /* 45 */ 1319 st_Nil, /* 46 */ 1320 st_Nil, /* 47 */ 1321 st_Nil, /* 48 */ 1322 st_Nil, /* 49 */ 1323 st_Nil, /* 50 */ 1324 st_Nil, /* 51 */ 1325 st_Nil, /* 52 */ 1326 st_Nil, /* 53 */ 1327 st_Nil, /* 54 */ 1328 st_Nil, /* 55 */ 1329 st_Nil, /* 56 */ 1330 st_Nil, /* 57 */ 1331 st_Nil, /* 58 */ 1332 st_Nil, /* 59 */ 1333 st_Nil, /* 60 */ 1334 st_Nil, /* 61 */ 1335 st_Nil, /* 62 */ 1336 st_Nil, /* 63 */ 1337 st_Nil, /* 64 */ 1338 st_Nil, /* 65 */ 1339 st_Nil, /* 66 */ 1340 st_Nil, /* 67 */ 1341 st_Nil, /* 68 */ 1342 st_Nil, /* 69 */ 1343 st_Nil, /* 70 */ 1344 st_Nil, /* 71 */ 1345 st_Nil, /* 72 */ 1346 st_Nil, /* 73 */ 1347 st_Nil, /* 74 */ 1348 st_Nil, /* 75 */ 1349 st_Nil, /* 76 */ 1350 st_Nil, /* 77 */ 1351 st_Nil, /* 78 */ 1352 st_Nil, /* 79 */ 1353 st_Nil, /* 80 */ 1354 st_Nil, /* 81 */ 1355 st_Nil, /* 82 */ 1356 st_Nil, /* 83 */ 1357 st_Nil, /* 84 */ 1358 st_Nil, /* 85 */ 1359 st_Nil, /* 86 */ 1360 st_Nil, /* 87 */ 1361 st_Nil, /* 88 */ 1362 st_Nil, /* 89 */ 1363 st_Nil, /* 90 */ 1364 st_Nil, /* 91 */ 1365 st_Nil, /* 92 */ 1366 st_Nil, /* 93 */ 1367 st_Nil, /* 94 */ 1368 st_Nil, /* 95 */ 1369 st_Nil, /* 96 */ 1370 st_Nil, /* 97 */ 1371 st_Nil, /* 98 */ 1372 st_Nil, /* 99 */ 1373 st_Block, /* 100: C_BLOCK block start/end */ 1374 st_Proc, /* 101: C_FCN function start/end */ 1375 st_End, /* 102: C_EOS end of struct/union/enum */ 1376 st_File, /* 103: C_FILE file start */ 1377 st_Nil, /* 104: C_LINE line number */ 1378 st_Nil, /* 105: C_ALIAS combined type info */ 1379 st_Nil, /* 106: C_HIDDEN ??? */ 1380 }; 1381 1382 /* Keep track of different sized allocation requests. */ 1383 static alloc_info_t alloc_counts[(int) alloc_type_last]; 1384 1385 /* Record whether we have seen any debugging information. */ 1387 int ecoff_debugging_seen = 0; 1388 1389 /* Various statics. */ 1390 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */ 1391 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */ 1392 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */ 1393 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */ 1394 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */ 1395 #ifdef ECOFF_DEBUG 1396 static int debug = 0; /* trace functions */ 1397 #endif 1398 static int stabs_seen = 0; /* != 0 if stabs have been seen */ 1399 1400 static int current_file_idx; 1401 static const char *current_stabs_filename; 1402 1403 /* Pseudo symbol to use when putting stabs into the symbol table. */ 1404 #ifndef STABS_SYMBOL 1405 #define STABS_SYMBOL "@stabs" 1406 #endif 1407 1408 static char stabs_symbol[] = STABS_SYMBOL; 1409 1410 /* Prototypes for functions defined in this file. */ 1412 1413 static void add_varray_page (varray_t *vp); 1414 static symint_t add_string (varray_t *vp, 1415 struct hash_control *hash_tbl, 1416 const char *str, 1417 shash_t **ret_hash); 1418 static localsym_t *add_ecoff_symbol (const char *str, st_t type, 1419 sc_t storage, symbolS *sym, 1420 bfd_vma addend, symint_t value, 1421 symint_t indx); 1422 static symint_t add_aux_sym_symint (symint_t aux_word); 1423 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index); 1424 static symint_t add_aux_sym_tir (type_info_t *t, 1425 hash_state_t state, 1426 thash_t **hash_tbl); 1427 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type); 1428 static void add_unknown_tag (tag_t *ptag); 1429 static void add_procedure (char *func); 1430 static void add_file (const char *file_name, int indx, int fake); 1431 #ifdef ECOFF_DEBUG 1432 static char *sc_to_string (sc_t storage_class); 1433 static char *st_to_string (st_t symbol_type); 1434 #endif 1435 static void mark_stabs (int); 1436 static char *ecoff_add_bytes (char **buf, char **bufend, 1437 char *bufptr, unsigned long need); 1438 static unsigned long ecoff_padding_adjust 1439 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1440 unsigned long offset, char **bufptrptr); 1441 static unsigned long ecoff_build_lineno 1442 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1443 unsigned long offset, long *linecntptr); 1444 static unsigned long ecoff_build_symbols 1445 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1446 unsigned long offset); 1447 static unsigned long ecoff_build_procs 1448 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1449 unsigned long offset); 1450 static unsigned long ecoff_build_aux 1451 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1452 unsigned long offset); 1453 static unsigned long ecoff_build_strings (char **buf, char **bufend, 1454 unsigned long offset, 1455 varray_t *vp); 1456 static unsigned long ecoff_build_ss 1457 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1458 unsigned long offset); 1459 static unsigned long ecoff_build_fdr 1460 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1461 unsigned long offset); 1462 static void ecoff_setup_ext (void); 1463 static page_type *allocate_cluster (unsigned long npages); 1464 static page_type *allocate_page (void); 1465 static scope_t *allocate_scope (void); 1466 static void free_scope (scope_t *ptr); 1467 static vlinks_t *allocate_vlinks (void); 1468 static shash_t *allocate_shash (void); 1469 static thash_t *allocate_thash (void); 1470 static tag_t *allocate_tag (void); 1471 static void free_tag (tag_t *ptr); 1472 static forward_t *allocate_forward (void); 1473 static thead_t *allocate_thead (void); 1474 static void free_thead (thead_t *ptr); 1475 static lineno_list_t *allocate_lineno_list (void); 1476 1477 /* This function should be called when the assembler starts up. */ 1479 1480 void 1481 ecoff_read_begin_hook (void) 1482 { 1483 tag_hash = hash_new (); 1484 top_tag_head = allocate_thead (); 1485 top_tag_head->first_tag = (tag_t *) NULL; 1486 top_tag_head->free = (thead_t *) NULL; 1487 top_tag_head->prev = cur_tag_head; 1488 cur_tag_head = top_tag_head; 1489 } 1490 1491 /* This function should be called when a symbol is created. */ 1492 1493 void 1494 ecoff_symbol_new_hook (symbolS *symbolP) 1495 { 1496 OBJ_SYMFIELD_TYPE *obj; 1497 1498 /* Make sure that we have a file pointer, but only if we have seen a 1499 file. If we haven't seen a file, then this is a probably special 1500 symbol created by md_begin which may required special handling at 1501 some point. Creating a dummy file with a dummy name is certainly 1502 wrong. */ 1503 if (cur_file_ptr == (efdr_t *) NULL 1504 && seen_at_least_1_file ()) 1505 add_file ((const char *) NULL, 0, 1); 1506 obj = symbol_get_obj (symbolP); 1507 obj->ecoff_file = cur_file_ptr; 1508 obj->ecoff_symbol = NULL; 1509 obj->ecoff_extern_size = 0; 1510 } 1511 1512 void 1513 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) 1514 { 1515 OBJ_SYMFIELD_TYPE *n, *o; 1516 1517 n = symbol_get_obj (newsymP); 1518 o = symbol_get_obj (orgsymP); 1519 memcpy (n, o, sizeof *n); 1520 } 1521 1522 /* Add a page to a varray object. */ 1524 1525 static void 1526 add_varray_page (varray_t *vp /* varray to add page to */) 1527 { 1528 vlinks_t *new_links = allocate_vlinks (); 1529 1530 #ifdef MALLOC_CHECK 1531 if (vp->object_size > 1) 1532 new_links->datum = (page_type *) xcalloc (1, vp->object_size); 1533 else 1534 #endif 1535 new_links->datum = allocate_page (); 1536 1537 alloc_counts[(int) alloc_type_varray].total_alloc++; 1538 alloc_counts[(int) alloc_type_varray].total_pages++; 1539 1540 new_links->start_index = vp->num_allocated; 1541 vp->objects_last_page = 0; 1542 1543 if (vp->first == (vlinks_t *) NULL) /* first allocation? */ 1544 vp->first = vp->last = new_links; 1545 else 1546 { /* 2nd or greater allocation */ 1547 new_links->prev = vp->last; 1548 vp->last->next = new_links; 1549 vp->last = new_links; 1550 } 1551 } 1552 1553 /* Add a string (and null pad) to one of the string tables. */ 1555 1556 static symint_t 1557 add_string (varray_t *vp, /* string obstack */ 1558 struct hash_control *hash_tbl, /* ptr to hash table */ 1559 const char *str, /* string */ 1560 shash_t **ret_hash /* return hash pointer */) 1561 { 1562 unsigned long len = strlen (str); 1563 shash_t *hash_ptr; 1564 1565 if (len >= PAGE_USIZE) 1566 as_fatal (_("string too big (%lu bytes)"), len); 1567 1568 hash_ptr = (shash_t *) hash_find (hash_tbl, str); 1569 if (hash_ptr == (shash_t *) NULL) 1570 { 1571 const char *err; 1572 1573 if (vp->objects_last_page + len >= PAGE_USIZE) 1574 { 1575 vp->num_allocated = 1576 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE; 1577 add_varray_page (vp); 1578 } 1579 1580 hash_ptr = allocate_shash (); 1581 hash_ptr->indx = vp->num_allocated; 1582 1583 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page]; 1584 1585 vp->objects_last_page += len + 1; 1586 vp->num_allocated += len + 1; 1587 1588 strcpy (hash_ptr->string, str); 1589 1590 err = hash_insert (hash_tbl, str, (char *) hash_ptr); 1591 if (err) 1592 as_fatal (_("inserting \"%s\" into string hash table: %s"), 1593 str, err); 1594 } 1595 1596 if (ret_hash != (shash_t **) NULL) 1597 *ret_hash = hash_ptr; 1598 1599 return hash_ptr->indx; 1600 } 1601 1602 /* Add debugging information for a symbol. */ 1604 1605 static localsym_t * 1606 add_ecoff_symbol (const char *str, /* symbol name */ 1607 st_t type, /* symbol type */ 1608 sc_t storage, /* storage class */ 1609 symbolS *sym_value, /* associated symbol. */ 1610 bfd_vma addend, /* addend to sym_value. */ 1611 symint_t value, /* value of symbol */ 1612 symint_t indx /* index to local/aux. syms */) 1613 { 1614 localsym_t *psym; 1615 scope_t *pscope; 1616 thead_t *ptag_head; 1617 tag_t *ptag; 1618 tag_t *ptag_next; 1619 varray_t *vp; 1620 int scope_delta = 0; 1621 shash_t *hash_ptr = (shash_t *) NULL; 1622 1623 if (cur_file_ptr == (efdr_t *) NULL) 1624 as_fatal (_("no current file pointer")); 1625 1626 vp = &cur_file_ptr->symbols; 1627 1628 if (vp->objects_last_page == vp->objects_per_page) 1629 add_varray_page (vp); 1630 1631 psym = &vp->last->datum->sym[vp->objects_last_page++]; 1632 1633 if (str == (const char *) NULL && sym_value != (symbolS *) NULL) 1634 psym->name = S_GET_NAME (sym_value); 1635 else 1636 psym->name = str; 1637 psym->as_sym = sym_value; 1638 if (sym_value != (symbolS *) NULL) 1639 symbol_get_obj (sym_value)->ecoff_symbol = psym; 1640 psym->addend = addend; 1641 psym->file_ptr = cur_file_ptr; 1642 psym->proc_ptr = cur_proc_ptr; 1643 psym->begin_ptr = (localsym_t *) NULL; 1644 psym->index_ptr = (aux_t *) NULL; 1645 psym->forward_ref = (forward_t *) NULL; 1646 psym->sym_index = -1; 1647 memset (&psym->ecoff_sym, 0, sizeof (EXTR)); 1648 psym->ecoff_sym.asym.value = value; 1649 psym->ecoff_sym.asym.st = (unsigned) type; 1650 psym->ecoff_sym.asym.sc = (unsigned) storage; 1651 psym->ecoff_sym.asym.index = indx; 1652 1653 /* If there is an associated symbol, we wait until the end of the 1654 assembly before deciding where to put the name (it may be just an 1655 external symbol). Otherwise, this is just a debugging symbol and 1656 the name should go with the current file. */ 1657 if (sym_value == (symbolS *) NULL) 1658 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL) 1659 ? 0 1660 : add_string (&cur_file_ptr->strings, 1661 cur_file_ptr->str_hash, 1662 str, 1663 &hash_ptr)); 1664 1665 ++vp->num_allocated; 1666 1667 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym)) 1668 return psym; 1669 1670 /* Save the symbol within the hash table if this is a static 1671 item, and it has a name. */ 1672 if (hash_ptr != (shash_t *) NULL 1673 && (type == st_Global || type == st_Static || type == st_Label 1674 || type == st_Proc || type == st_StaticProc)) 1675 hash_ptr->sym_ptr = psym; 1676 1677 /* push or pop a scope if appropriate. */ 1678 switch (type) 1679 { 1680 default: 1681 break; 1682 1683 case st_File: /* beginning of file */ 1684 case st_Proc: /* procedure */ 1685 case st_StaticProc: /* static procedure */ 1686 case st_Block: /* begin scope */ 1687 pscope = allocate_scope (); 1688 pscope->prev = cur_file_ptr->cur_scope; 1689 pscope->lsym = psym; 1690 pscope->type = type; 1691 cur_file_ptr->cur_scope = pscope; 1692 1693 if (type != st_File) 1694 scope_delta = 1; 1695 1696 /* For every block type except file, struct, union, or 1697 enumeration blocks, push a level on the tag stack. We omit 1698 file types, so that tags can span file boundaries. */ 1699 if (type != st_File && storage != sc_Info) 1700 { 1701 ptag_head = allocate_thead (); 1702 ptag_head->first_tag = 0; 1703 ptag_head->prev = cur_tag_head; 1704 cur_tag_head = ptag_head; 1705 } 1706 break; 1707 1708 case st_End: 1709 pscope = cur_file_ptr->cur_scope; 1710 if (pscope == (scope_t *) NULL) 1711 as_fatal (_("too many st_End's")); 1712 else 1713 { 1714 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st; 1715 1716 psym->begin_ptr = pscope->lsym; 1717 1718 if (begin_type != st_File) 1719 scope_delta = -1; 1720 1721 /* Except for file, structure, union, or enumeration end 1722 blocks remove all tags created within this scope. */ 1723 if (begin_type != st_File && storage != sc_Info) 1724 { 1725 ptag_head = cur_tag_head; 1726 cur_tag_head = ptag_head->prev; 1727 1728 for (ptag = ptag_head->first_tag; 1729 ptag != (tag_t *) NULL; 1730 ptag = ptag_next) 1731 { 1732 if (ptag->forward_ref != (forward_t *) NULL) 1733 add_unknown_tag (ptag); 1734 1735 ptag_next = ptag->same_block; 1736 ptag->hash_ptr->tag_ptr = ptag->same_name; 1737 free_tag (ptag); 1738 } 1739 1740 free_thead (ptag_head); 1741 } 1742 1743 cur_file_ptr->cur_scope = pscope->prev; 1744 1745 /* block begin gets next sym #. This is set when we know 1746 the symbol index value. */ 1747 1748 /* Functions push two or more aux words as follows: 1749 1st word: index+1 of the end symbol (filled in later). 1750 2nd word: type of the function (plus any aux words needed). 1751 Also, tie the external pointer back to the function begin symbol. */ 1752 if (begin_type != st_File && begin_type != st_Block) 1753 { 1754 symint_t ty; 1755 varray_t *svp = &cur_file_ptr->aux_syms; 1756 1757 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0); 1758 pscope->lsym->index_ptr = 1759 &svp->last->datum->aux[svp->objects_last_page - 1]; 1760 ty = add_aux_sym_tir (&last_func_type_info, 1761 hash_no, 1762 &cur_file_ptr->thash_head[0]); 1763 (void) ty; 1764 /* This seems to be unnecessary. I'm not even sure what it is 1765 * intended to do. It's from mips-tfile. 1766 * if (last_func_sym_value != (symbolS *) NULL) 1767 * { 1768 * last_func_sym_value->ifd = cur_file_ptr->file_index; 1769 * last_func_sym_value->index = ty; 1770 * } 1771 */ 1772 } 1773 1774 free_scope (pscope); 1775 } 1776 } 1777 1778 cur_file_ptr->nested_scopes += scope_delta; 1779 1780 #ifdef ECOFF_DEBUG 1781 if (debug && type != st_File 1782 && (debug > 2 || type == st_Block || type == st_End 1783 || type == st_Proc || type == st_StaticProc)) 1784 { 1785 char *sc_str = sc_to_string (storage); 1786 char *st_str = st_to_string (type); 1787 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0); 1788 1789 fprintf (stderr, 1790 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s", 1791 value, depth, sc_str); 1792 1793 if (str_start && str_end_p1 - str_start > 0) 1794 fprintf (stderr, " st= %-11s name= %.*s\n", 1795 st_str, str_end_p1 - str_start, str_start); 1796 else 1797 { 1798 unsigned long len = strlen (st_str); 1799 fprintf (stderr, " st= %.*s\n", len - 1, st_str); 1800 } 1801 } 1802 #endif 1803 1804 return psym; 1805 } 1806 1807 /* Add an auxiliary symbol (passing a symint). This is actually used 1809 for integral aux types, not just symints. */ 1810 1811 static symint_t 1812 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */) 1813 { 1814 varray_t *vp; 1815 aux_t *aux_ptr; 1816 1817 if (cur_file_ptr == (efdr_t *) NULL) 1818 as_fatal (_("no current file pointer")); 1819 1820 vp = &cur_file_ptr->aux_syms; 1821 1822 if (vp->objects_last_page == vp->objects_per_page) 1823 add_varray_page (vp); 1824 1825 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1826 aux_ptr->type = aux_isym; 1827 aux_ptr->data.isym = aux_word; 1828 1829 return vp->num_allocated++; 1830 } 1831 1832 /* Add an auxiliary symbol (passing a file/symbol index combo). */ 1833 1834 static symint_t 1835 add_aux_sym_rndx (int file_index, symint_t sym_index) 1836 { 1837 varray_t *vp; 1838 aux_t *aux_ptr; 1839 1840 if (cur_file_ptr == (efdr_t *) NULL) 1841 as_fatal (_("no current file pointer")); 1842 1843 vp = &cur_file_ptr->aux_syms; 1844 1845 if (vp->objects_last_page == vp->objects_per_page) 1846 add_varray_page (vp); 1847 1848 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1849 aux_ptr->type = aux_rndx; 1850 aux_ptr->data.rndx.rfd = file_index; 1851 aux_ptr->data.rndx.index = sym_index; 1852 1853 return vp->num_allocated++; 1854 } 1855 1856 /* Add an auxiliary symbol (passing the basic type and possibly 1858 type qualifiers). */ 1859 1860 static symint_t 1861 add_aux_sym_tir (type_info_t *t, /* current type information */ 1862 hash_state_t state, /* whether to hash type or not */ 1863 thash_t **hash_tbl /* pointer to hash table to use */) 1864 { 1865 varray_t *vp; 1866 aux_t *aux_ptr; 1867 static AUXU init_aux; 1868 symint_t ret; 1869 int i; 1870 AUXU aux; 1871 1872 if (cur_file_ptr == (efdr_t *) NULL) 1873 as_fatal (_("no current file pointer")); 1874 1875 vp = &cur_file_ptr->aux_syms; 1876 1877 aux = init_aux; 1878 aux.ti.bt = (int) t->basic_type; 1879 aux.ti.continued = 0; 1880 aux.ti.fBitfield = t->bitfield; 1881 1882 aux.ti.tq0 = (int) t->type_qualifiers[0]; 1883 aux.ti.tq1 = (int) t->type_qualifiers[1]; 1884 aux.ti.tq2 = (int) t->type_qualifiers[2]; 1885 aux.ti.tq3 = (int) t->type_qualifiers[3]; 1886 aux.ti.tq4 = (int) t->type_qualifiers[4]; 1887 aux.ti.tq5 = (int) t->type_qualifiers[5]; 1888 1889 /* For anything that adds additional information, we must not hash, 1890 so check here, and reset our state. */ 1891 1892 if (state != hash_no 1893 && (t->type_qualifiers[0] == tq_Array 1894 || t->type_qualifiers[1] == tq_Array 1895 || t->type_qualifiers[2] == tq_Array 1896 || t->type_qualifiers[3] == tq_Array 1897 || t->type_qualifiers[4] == tq_Array 1898 || t->type_qualifiers[5] == tq_Array 1899 || t->basic_type == bt_Struct 1900 || t->basic_type == bt_Union 1901 || t->basic_type == bt_Enum 1902 || t->bitfield 1903 || t->num_dims > 0)) 1904 state = hash_no; 1905 1906 /* See if we can hash this type, and save some space, but some types 1907 can't be hashed (because they contain arrays or continuations), 1908 and others can be put into the hash list, but cannot use existing 1909 types because other aux entries precede this one. */ 1910 1911 if (state != hash_no) 1912 { 1913 thash_t *hash_ptr; 1914 symint_t hi; 1915 1916 hi = aux.isym & ((1 << HASHBITS) - 1); 1917 hi %= THASH_SIZE; 1918 1919 for (hash_ptr = hash_tbl[hi]; 1920 hash_ptr != (thash_t *)0; 1921 hash_ptr = hash_ptr->next) 1922 { 1923 if (aux.isym == hash_ptr->type.isym) 1924 break; 1925 } 1926 1927 if (hash_ptr != (thash_t *) NULL && state == hash_yes) 1928 return hash_ptr->indx; 1929 1930 if (hash_ptr == (thash_t *) NULL) 1931 { 1932 hash_ptr = allocate_thash (); 1933 hash_ptr->next = hash_tbl[hi]; 1934 hash_ptr->type = aux; 1935 hash_ptr->indx = vp->num_allocated; 1936 hash_tbl[hi] = hash_ptr; 1937 } 1938 } 1939 1940 /* Everything is set up, add the aux symbol. */ 1941 if (vp->objects_last_page == vp->objects_per_page) 1942 add_varray_page (vp); 1943 1944 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1945 aux_ptr->type = aux_tir; 1946 aux_ptr->data = aux; 1947 1948 ret = vp->num_allocated++; 1949 1950 /* Add bitfield length if it exists. 1951 1952 NOTE: Mips documentation claims bitfield goes at the end of the 1953 AUX record, but the DECstation compiler emits it here. 1954 (This would only make a difference for enum bitfields.) 1955 1956 Also note: We use the last size given since gcc may emit 2 1957 for an enum bitfield. */ 1958 1959 if (t->bitfield) 1960 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]); 1961 1962 /* Add tag information if needed. Structure, union, and enum 1963 references add 2 aux symbols: a [file index, symbol index] 1964 pointer to the structure type, and the current file index. */ 1965 1966 if (t->basic_type == bt_Struct 1967 || t->basic_type == bt_Union 1968 || t->basic_type == bt_Enum) 1969 { 1970 symint_t file_index = t->tag_ptr->ifd; 1971 localsym_t *sym = t->tag_ptr->sym; 1972 forward_t *forward_ref = allocate_forward (); 1973 1974 if (sym != (localsym_t *) NULL) 1975 { 1976 forward_ref->next = sym->forward_ref; 1977 sym->forward_ref = forward_ref; 1978 } 1979 else 1980 { 1981 forward_ref->next = t->tag_ptr->forward_ref; 1982 t->tag_ptr->forward_ref = forward_ref; 1983 } 1984 1985 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil); 1986 forward_ref->index_ptr 1987 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1988 1989 (void) add_aux_sym_symint (file_index); 1990 forward_ref->ifd_ptr 1991 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1992 } 1993 1994 /* Add information about array bounds if they exist. */ 1995 for (i = 0; i < t->num_dims; i++) 1996 { 1997 (void) add_aux_sym_rndx (ST_RFDESCAPE, 1998 cur_file_ptr->int_type); 1999 2000 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/ 2001 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */ 2002 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/ 2003 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */ 2004 ? 0 2005 : (t->sizes[i] * 8) / t->dimensions[i]); 2006 }; 2007 2008 /* NOTE: Mips documentation claims that the bitfield width goes here. 2009 But it needs to be emitted earlier. */ 2010 2011 return ret; 2012 } 2013 2014 /* Add a tag to the tag table (unless it already exists). */ 2016 2017 static tag_t * 2018 get_tag (const char *tag, /* tag name */ 2019 localsym_t *sym, /* tag start block */ 2020 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */) 2021 { 2022 shash_t *hash_ptr; 2023 const char *err; 2024 tag_t *tag_ptr; 2025 2026 if (cur_file_ptr == (efdr_t *) NULL) 2027 as_fatal (_("no current file pointer")); 2028 2029 hash_ptr = (shash_t *) hash_find (tag_hash, tag); 2030 2031 if (hash_ptr != (shash_t *) NULL 2032 && hash_ptr->tag_ptr != (tag_t *) NULL) 2033 { 2034 tag_ptr = hash_ptr->tag_ptr; 2035 if (sym != (localsym_t *) NULL) 2036 { 2037 tag_ptr->basic_type = basic_type; 2038 tag_ptr->ifd = cur_file_ptr->file_index; 2039 tag_ptr->sym = sym; 2040 } 2041 return tag_ptr; 2042 } 2043 2044 if (hash_ptr == (shash_t *) NULL) 2045 { 2046 char *perm; 2047 2048 perm = xstrdup (tag); 2049 hash_ptr = allocate_shash (); 2050 err = hash_insert (tag_hash, perm, (char *) hash_ptr); 2051 if (err) 2052 as_fatal (_("inserting \"%s\" into tag hash table: %s"), 2053 tag, err); 2054 hash_ptr->string = perm; 2055 } 2056 2057 tag_ptr = allocate_tag (); 2058 tag_ptr->forward_ref = (forward_t *) NULL; 2059 tag_ptr->hash_ptr = hash_ptr; 2060 tag_ptr->same_name = hash_ptr->tag_ptr; 2061 tag_ptr->basic_type = basic_type; 2062 tag_ptr->sym = sym; 2063 tag_ptr->ifd = ((sym == (localsym_t *) NULL) 2064 ? (symint_t) -1 2065 : cur_file_ptr->file_index); 2066 tag_ptr->same_block = cur_tag_head->first_tag; 2067 2068 cur_tag_head->first_tag = tag_ptr; 2069 hash_ptr->tag_ptr = tag_ptr; 2070 2071 return tag_ptr; 2072 } 2073 2074 /* Add an unknown {struct, union, enum} tag. */ 2076 2077 static void 2078 add_unknown_tag (tag_t *ptag /* pointer to tag information */) 2079 { 2080 shash_t *hash_ptr = ptag->hash_ptr; 2081 char *name = hash_ptr->string; 2082 localsym_t *sym; 2083 forward_t **pf; 2084 2085 #ifdef ECOFF_DEBUG 2086 if (debug > 1) 2087 { 2088 char *agg_type = "{unknown aggregate type}"; 2089 switch (ptag->basic_type) 2090 { 2091 case bt_Struct: agg_type = "struct"; break; 2092 case bt_Union: agg_type = "union"; break; 2093 case bt_Enum: agg_type = "enum"; break; 2094 default: break; 2095 } 2096 2097 fprintf (stderr, "unknown %s %.*s found\n", agg_type, 2098 hash_ptr->len, name_start); 2099 } 2100 #endif 2101 2102 sym = add_ecoff_symbol (name, 2103 st_Block, 2104 sc_Info, 2105 (symbolS *) NULL, 2106 (bfd_vma) 0, 2107 (symint_t) 0, 2108 (symint_t) 0); 2109 2110 (void) add_ecoff_symbol (name, 2111 st_End, 2112 sc_Info, 2113 (symbolS *) NULL, 2114 (bfd_vma) 0, 2115 (symint_t) 0, 2116 (symint_t) 0); 2117 2118 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) 2119 ; 2120 *pf = ptag->forward_ref; 2121 } 2122 2123 /* Add a procedure to the current file's list of procedures, and record 2125 this is the current procedure. */ 2126 2127 static void 2128 add_procedure (char *func /* func name */) 2129 { 2130 varray_t *vp; 2131 proc_t *new_proc_ptr; 2132 symbolS *sym; 2133 2134 #ifdef ECOFF_DEBUG 2135 if (debug) 2136 fputc ('\n', stderr); 2137 #endif 2138 2139 if (cur_file_ptr == (efdr_t *) NULL) 2140 as_fatal (_("no current file pointer")); 2141 2142 vp = &cur_file_ptr->procs; 2143 2144 if (vp->objects_last_page == vp->objects_per_page) 2145 add_varray_page (vp); 2146 2147 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++]; 2148 2149 if (first_proc_ptr == (proc_t *) NULL) 2150 first_proc_ptr = new_proc_ptr; 2151 2152 vp->num_allocated++; 2153 2154 new_proc_ptr->pdr.isym = -1; 2155 new_proc_ptr->pdr.iline = -1; 2156 new_proc_ptr->pdr.lnLow = -1; 2157 new_proc_ptr->pdr.lnHigh = -1; 2158 2159 /* Set the BSF_FUNCTION flag for the symbol. */ 2160 sym = symbol_find_or_make (func); 2161 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; 2162 2163 /* Push the start of the function. */ 2164 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text, 2165 sym, (bfd_vma) 0, (symint_t) 0, 2166 (symint_t) 0); 2167 2168 ++proc_cnt; 2169 2170 /* Fill in the linenos preceding the .ent, if any. */ 2171 if (noproc_lineno != (lineno_list_t *) NULL) 2172 { 2173 lineno_list_t *l; 2174 2175 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next) 2176 l->proc = new_proc_ptr; 2177 *last_lineno_ptr = noproc_lineno; 2178 while (*last_lineno_ptr != NULL) 2179 { 2180 last_lineno = *last_lineno_ptr; 2181 last_lineno_ptr = &last_lineno->next; 2182 } 2183 noproc_lineno = (lineno_list_t *) NULL; 2184 } 2185 } 2186 2187 symbolS * 2188 ecoff_get_cur_proc_sym (void) 2189 { 2190 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL); 2191 } 2192 2193 /* Add a new filename, and set up all of the file relative 2195 virtual arrays (strings, symbols, aux syms, etc.). Record 2196 where the current file structure lives. */ 2197 2198 static void 2199 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake) 2200 { 2201 int first_ch; 2202 efdr_t *fil_ptr; 2203 2204 #ifdef ECOFF_DEBUG 2205 if (debug) 2206 fprintf (stderr, "\tfile\t%.*s\n", len, file_start); 2207 #endif 2208 2209 /* If the file name is NULL, then no .file symbol appeared, and we 2210 want to use the actual file name. */ 2211 if (file_name == (const char *) NULL) 2212 { 2213 char *file; 2214 2215 if (first_file != (efdr_t *) NULL) 2216 as_fatal (_("fake .file after real one")); 2217 as_where (&file, (unsigned int *) NULL); 2218 file_name = (const char *) file; 2219 2220 /* Automatically generate ECOFF debugging information, since I 2221 think that's what other ECOFF assemblers do. We don't do 2222 this if we see a .file directive with a string, since that 2223 implies that some sort of debugging information is being 2224 provided. */ 2225 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED) 2226 debug_type = DEBUG_ECOFF; 2227 } 2228 else if (debug_type == DEBUG_UNSPECIFIED) 2229 debug_type = DEBUG_NONE; 2230 2231 #ifndef NO_LISTING 2232 if (listing) 2233 listing_source_file (file_name); 2234 #endif 2235 2236 current_stabs_filename = file_name; 2237 2238 /* If we're creating stabs, then we don't actually make a new FDR. 2239 Instead, we just create a stabs symbol. */ 2240 if (stabs_seen) 2241 { 2242 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil, 2243 symbol_new ("L0\001", now_seg, 2244 (valueT) frag_now_fix (), 2245 frag_now), 2246 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL)); 2247 return; 2248 } 2249 2250 first_ch = *file_name; 2251 2252 /* FIXME: We can't safely merge files which have line number 2253 information (fMerge will be zero in this case). Otherwise, we 2254 get incorrect line number debugging info. See for instance 2255 ecoff_build_lineno, which will end up setting all file->fdr.* 2256 fields multiple times, resulting in incorrect debug info. In 2257 order to make this work right, all line number and symbol info 2258 for the same source file has to be adjacent in the object file, 2259 so that a single file descriptor can be used to point to them. 2260 This would require maintaining file specific lists of line 2261 numbers and symbols for each file, so that they can be merged 2262 together (or output together) when two .file pseudo-ops are 2263 merged into one file descriptor. */ 2264 2265 /* See if the file has already been created. */ 2266 for (fil_ptr = first_file; 2267 fil_ptr != (efdr_t *) NULL; 2268 fil_ptr = fil_ptr->next_file) 2269 { 2270 if (first_ch == fil_ptr->name[0] 2271 && filename_cmp (file_name, fil_ptr->name) == 0 2272 && fil_ptr->fdr.fMerge) 2273 { 2274 cur_file_ptr = fil_ptr; 2275 if (! fake) 2276 cur_file_ptr->fake = 0; 2277 break; 2278 } 2279 } 2280 2281 /* If this is a new file, create it. */ 2282 if (fil_ptr == (efdr_t *) NULL) 2283 { 2284 if (file_desc.objects_last_page == file_desc.objects_per_page) 2285 add_varray_page (&file_desc); 2286 2287 fil_ptr = cur_file_ptr = 2288 &file_desc.last->datum->file[file_desc.objects_last_page++]; 2289 *fil_ptr = init_file; 2290 2291 fil_ptr->file_index = current_file_idx++; 2292 ++file_desc.num_allocated; 2293 2294 fil_ptr->fake = fake; 2295 2296 /* Allocate the string hash table. */ 2297 fil_ptr->str_hash = hash_new (); 2298 2299 /* Make sure 0 byte in string table is null */ 2300 add_string (&fil_ptr->strings, 2301 fil_ptr->str_hash, 2302 "", 2303 (shash_t **)0); 2304 2305 if (strlen (file_name) > PAGE_USIZE - 2) 2306 as_fatal (_("filename goes over one page boundary")); 2307 2308 /* Push the start of the filename. We assume that the filename 2309 will be stored at string offset 1. */ 2310 (void) add_ecoff_symbol (file_name, st_File, sc_Text, 2311 (symbolS *) NULL, (bfd_vma) 0, 2312 (symint_t) 0, (symint_t) 0); 2313 fil_ptr->fdr.rss = 1; 2314 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1]; 2315 2316 /* Update the linked list of file descriptors. */ 2317 *last_file_ptr = fil_ptr; 2318 last_file_ptr = &fil_ptr->next_file; 2319 2320 /* Add void & int types to the file (void should be first to catch 2321 errant 0's within the index fields). */ 2322 fil_ptr->void_type = add_aux_sym_tir (&void_type_info, 2323 hash_yes, 2324 &cur_file_ptr->thash_head[0]); 2325 2326 fil_ptr->int_type = add_aux_sym_tir (&int_type_info, 2327 hash_yes, 2328 &cur_file_ptr->thash_head[0]); 2329 } 2330 } 2331 2332 /* This function is called when the assembler notices a preprocessor 2333 directive switching to a new file. This will not happen in 2334 compiler output, only in hand coded assembler. */ 2335 2336 void 2337 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED) 2338 { 2339 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0) 2340 return; 2341 add_file (name, 0, 0); 2342 2343 /* This is a hand coded assembler file, so automatically turn on 2344 debugging information. */ 2345 if (debug_type == DEBUG_UNSPECIFIED) 2346 debug_type = DEBUG_ECOFF; 2347 } 2348 2349 #ifdef ECOFF_DEBUG 2351 2352 /* Convert storage class to string. */ 2353 2354 static char * 2355 sc_to_string (storage_class) 2356 sc_t storage_class; 2357 { 2358 switch (storage_class) 2359 { 2360 case sc_Nil: return "Nil,"; 2361 case sc_Text: return "Text,"; 2362 case sc_Data: return "Data,"; 2363 case sc_Bss: return "Bss,"; 2364 case sc_Register: return "Register,"; 2365 case sc_Abs: return "Abs,"; 2366 case sc_Undefined: return "Undefined,"; 2367 case sc_CdbLocal: return "CdbLocal,"; 2368 case sc_Bits: return "Bits,"; 2369 case sc_CdbSystem: return "CdbSystem,"; 2370 case sc_RegImage: return "RegImage,"; 2371 case sc_Info: return "Info,"; 2372 case sc_UserStruct: return "UserStruct,"; 2373 case sc_SData: return "SData,"; 2374 case sc_SBss: return "SBss,"; 2375 case sc_RData: return "RData,"; 2376 case sc_Var: return "Var,"; 2377 case sc_Common: return "Common,"; 2378 case sc_SCommon: return "SCommon,"; 2379 case sc_VarRegister: return "VarRegister,"; 2380 case sc_Variant: return "Variant,"; 2381 case sc_SUndefined: return "SUndefined,"; 2382 case sc_Init: return "Init,"; 2383 case sc_Max: return "Max,"; 2384 } 2385 2386 return "???,"; 2387 } 2388 2389 #endif /* DEBUG */ 2390 2391 #ifdef ECOFF_DEBUG 2393 2394 /* Convert symbol type to string. */ 2395 2396 static char * 2397 st_to_string (symbol_type) 2398 st_t symbol_type; 2399 { 2400 switch (symbol_type) 2401 { 2402 case st_Nil: return "Nil,"; 2403 case st_Global: return "Global,"; 2404 case st_Static: return "Static,"; 2405 case st_Param: return "Param,"; 2406 case st_Local: return "Local,"; 2407 case st_Label: return "Label,"; 2408 case st_Proc: return "Proc,"; 2409 case st_Block: return "Block,"; 2410 case st_End: return "End,"; 2411 case st_Member: return "Member,"; 2412 case st_Typedef: return "Typedef,"; 2413 case st_File: return "File,"; 2414 case st_RegReloc: return "RegReloc,"; 2415 case st_Forward: return "Forward,"; 2416 case st_StaticProc: return "StaticProc,"; 2417 case st_Constant: return "Constant,"; 2418 case st_Str: return "String,"; 2419 case st_Number: return "Number,"; 2420 case st_Expr: return "Expr,"; 2421 case st_Type: return "Type,"; 2422 case st_Max: return "Max,"; 2423 } 2424 2425 return "???,"; 2426 } 2427 2428 #endif /* DEBUG */ 2429 2430 /* Parse .begin directives which have a label as the first argument 2432 which gives the location of the start of the block. */ 2433 2434 void 2435 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED) 2436 { 2437 char *name; 2438 char name_end; 2439 2440 if (cur_file_ptr == (efdr_t *) NULL) 2441 { 2442 as_warn (_(".begin directive without a preceding .file directive")); 2443 demand_empty_rest_of_line (); 2444 return; 2445 } 2446 2447 if (cur_proc_ptr == (proc_t *) NULL) 2448 { 2449 as_warn (_(".begin directive without a preceding .ent directive")); 2450 demand_empty_rest_of_line (); 2451 return; 2452 } 2453 2454 name = input_line_pointer; 2455 name_end = get_symbol_end (); 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 *input_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 = input_line_pointer; 2494 name_end = get_symbol_end (); 2495 2496 /* The value is the distance between the .bend directive and the 2497 corresponding symbol. We fill in the offset when we write out 2498 the symbol. */ 2499 endsym = symbol_find (name); 2500 if (endsym == (symbolS *) NULL) 2501 as_warn (_(".bend directive names unknown symbol")); 2502 else 2503 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym, 2504 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2505 2506 *input_line_pointer = name_end; 2507 2508 /* The line number follows, but we don't use it. */ 2509 (void) get_absolute_expression (); 2510 demand_empty_rest_of_line (); 2511 } 2512 2513 /* COFF debugging information is provided as a series of directives 2515 (.def, .scl, etc.). We build up information as we read the 2516 directives in the following static variables, and file it away when 2517 we reach the .endef directive. */ 2518 static char *coff_sym_name; 2519 static type_info_t coff_type; 2520 static sc_t coff_storage_class; 2521 static st_t coff_symbol_typ; 2522 static int coff_is_function; 2523 static char *coff_tag; 2524 static valueT coff_value; 2525 static symbolS *coff_sym_value; 2526 static bfd_vma coff_sym_addend; 2527 static int coff_inside_enumeration; 2528 2529 /* Handle a .def directive: start defining a symbol. */ 2530 2531 void 2532 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED) 2533 { 2534 char *name; 2535 char name_end; 2536 2537 ecoff_debugging_seen = 1; 2538 2539 SKIP_WHITESPACE (); 2540 2541 name = input_line_pointer; 2542 name_end = get_symbol_end (); 2543 2544 if (coff_sym_name != (char *) NULL) 2545 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored")); 2546 else if (*name == '\0') 2547 as_warn (_("empty symbol name in .def; ignored")); 2548 else 2549 { 2550 if (coff_sym_name != (char *) NULL) 2551 free (coff_sym_name); 2552 if (coff_tag != (char *) NULL) 2553 free (coff_tag); 2554 2555 coff_sym_name = xstrdup (name); 2556 coff_type = type_info_init; 2557 coff_storage_class = sc_Nil; 2558 coff_symbol_typ = st_Nil; 2559 coff_is_function = 0; 2560 coff_tag = (char *) NULL; 2561 coff_value = 0; 2562 coff_sym_value = (symbolS *) NULL; 2563 coff_sym_addend = 0; 2564 } 2565 2566 *input_line_pointer = name_end; 2567 2568 demand_empty_rest_of_line (); 2569 } 2570 2571 /* Handle a .dim directive, used to give dimensions for an array. The 2572 arguments are comma separated numbers. mips-tfile assumes that 2573 there will not be more than 6 dimensions, and gdb won't read any 2574 more than that anyhow, so I will also make that assumption. */ 2575 2576 void 2577 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED) 2578 { 2579 int dimens[N_TQ]; 2580 int i; 2581 2582 if (coff_sym_name == (char *) NULL) 2583 { 2584 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored")); 2585 demand_empty_rest_of_line (); 2586 return; 2587 } 2588 2589 for (i = 0; i < N_TQ; i++) 2590 { 2591 SKIP_WHITESPACE (); 2592 dimens[i] = get_absolute_expression (); 2593 if (*input_line_pointer == ',') 2594 ++input_line_pointer; 2595 else 2596 { 2597 if (*input_line_pointer != '\n' 2598 && *input_line_pointer != ';') 2599 as_warn (_("badly formed .dim directive")); 2600 break; 2601 } 2602 } 2603 2604 if (i == N_TQ) 2605 --i; 2606 2607 /* The dimensions are stored away in reverse order. */ 2608 for (; i >= 0; i--) 2609 { 2610 if (coff_type.num_dims >= N_TQ) 2611 { 2612 as_warn (_("too many .dim entries")); 2613 break; 2614 } 2615 coff_type.dimensions[coff_type.num_dims] = dimens[i]; 2616 ++coff_type.num_dims; 2617 } 2618 2619 demand_empty_rest_of_line (); 2620 } 2621 2622 /* Handle a .scl directive, which sets the COFF storage class of the 2623 symbol. */ 2624 2625 void 2626 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED) 2627 { 2628 long val; 2629 2630 if (coff_sym_name == (char *) NULL) 2631 { 2632 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored")); 2633 demand_empty_rest_of_line (); 2634 return; 2635 } 2636 2637 val = get_absolute_expression (); 2638 2639 coff_symbol_typ = map_coff_sym_type[val]; 2640 coff_storage_class = map_coff_storage[val]; 2641 2642 demand_empty_rest_of_line (); 2643 } 2644 2645 /* Handle a .size directive. For some reason mips-tfile.c thinks that 2646 .size can have multiple arguments. We humor it, although gcc will 2647 never generate more than one argument. */ 2648 2649 void 2650 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED) 2651 { 2652 int sizes[N_TQ]; 2653 int i; 2654 2655 if (coff_sym_name == (char *) NULL) 2656 { 2657 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored")); 2658 demand_empty_rest_of_line (); 2659 return; 2660 } 2661 2662 for (i = 0; i < N_TQ; i++) 2663 { 2664 SKIP_WHITESPACE (); 2665 sizes[i] = get_absolute_expression (); 2666 if (*input_line_pointer == ',') 2667 ++input_line_pointer; 2668 else 2669 { 2670 if (*input_line_pointer != '\n' 2671 && *input_line_pointer != ';') 2672 as_warn (_("badly formed .size directive")); 2673 break; 2674 } 2675 } 2676 2677 if (i == N_TQ) 2678 --i; 2679 2680 /* The sizes are stored away in reverse order. */ 2681 for (; i >= 0; i--) 2682 { 2683 if (coff_type.num_sizes >= N_TQ) 2684 { 2685 as_warn (_("too many .size entries")); 2686 break; 2687 } 2688 coff_type.sizes[coff_type.num_sizes] = sizes[i]; 2689 ++coff_type.num_sizes; 2690 } 2691 2692 demand_empty_rest_of_line (); 2693 } 2694 2695 /* Handle the .type directive, which gives the COFF type of the 2696 symbol. */ 2697 2698 void 2699 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED) 2700 { 2701 long val; 2702 tq_t *tq_ptr; 2703 tq_t *tq_shft; 2704 2705 if (coff_sym_name == (char *) NULL) 2706 { 2707 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored")); 2708 demand_empty_rest_of_line (); 2709 return; 2710 } 2711 2712 val = get_absolute_expression (); 2713 2714 coff_type.orig_type = BTYPE (val); 2715 coff_type.basic_type = map_coff_types[coff_type.orig_type]; 2716 2717 tq_ptr = &coff_type.type_qualifiers[N_TQ]; 2718 while (val & ~N_BTMASK) 2719 { 2720 if (tq_ptr == &coff_type.type_qualifiers[0]) 2721 { 2722 /* FIXME: We could handle this by setting the continued bit. 2723 There would still be a limit: the .type argument can not 2724 be infinite. */ 2725 as_warn (_("the type of %s is too complex; it will be simplified"), 2726 coff_sym_name); 2727 break; 2728 } 2729 if (ISPTR (val)) 2730 *--tq_ptr = tq_Ptr; 2731 else if (ISFCN (val)) 2732 *--tq_ptr = tq_Proc; 2733 else if (ISARY (val)) 2734 *--tq_ptr = tq_Array; 2735 else 2736 as_fatal (_("Unrecognized .type argument")); 2737 2738 val = DECREF (val); 2739 } 2740 2741 tq_shft = &coff_type.type_qualifiers[0]; 2742 while (tq_ptr != &coff_type.type_qualifiers[N_TQ]) 2743 *tq_shft++ = *tq_ptr++; 2744 2745 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc) 2746 { 2747 /* If this is a function, ignore it, so that we don't get two 2748 entries (one from the .ent, and one for the .def that 2749 precedes it). Save the type information so that the end 2750 block can properly add it after the begin block index. For 2751 MIPS knows what reason, we must strip off the function type 2752 at this point. */ 2753 coff_is_function = 1; 2754 tq_shft[-1] = tq_Nil; 2755 } 2756 2757 while (tq_shft != &coff_type.type_qualifiers[N_TQ]) 2758 *tq_shft++ = tq_Nil; 2759 2760 demand_empty_rest_of_line (); 2761 } 2762 2763 /* Handle the .tag directive, which gives the name of a structure, 2764 union or enum. */ 2765 2766 void 2767 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED) 2768 { 2769 char *name; 2770 char name_end; 2771 2772 if (coff_sym_name == (char *) NULL) 2773 { 2774 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored")); 2775 demand_empty_rest_of_line (); 2776 return; 2777 } 2778 2779 name = input_line_pointer; 2780 name_end = get_symbol_end (); 2781 2782 coff_tag = xstrdup (name); 2783 2784 *input_line_pointer = name_end; 2785 2786 demand_empty_rest_of_line (); 2787 } 2788 2789 /* Handle the .val directive, which gives the value of the symbol. It 2790 may be the name of a static or global symbol. */ 2791 2792 void 2793 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED) 2794 { 2795 expressionS exp; 2796 2797 if (coff_sym_name == (char *) NULL) 2798 { 2799 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored")); 2800 demand_empty_rest_of_line (); 2801 return; 2802 } 2803 2804 expression (&exp); 2805 if (exp.X_op != O_constant && exp.X_op != O_symbol) 2806 { 2807 as_bad (_(".val expression is too complex")); 2808 demand_empty_rest_of_line (); 2809 return; 2810 } 2811 2812 if (exp.X_op == O_constant) 2813 coff_value = exp.X_add_number; 2814 else 2815 { 2816 coff_sym_value = exp.X_add_symbol; 2817 coff_sym_addend = exp.X_add_number; 2818 } 2819 2820 demand_empty_rest_of_line (); 2821 } 2822 2823 /* Handle the .endef directive, which terminates processing of COFF 2824 debugging information for a symbol. */ 2825 2826 void 2827 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED) 2828 { 2829 char *name; 2830 symint_t indx; 2831 localsym_t *sym; 2832 2833 demand_empty_rest_of_line (); 2834 2835 if (coff_sym_name == (char *) NULL) 2836 { 2837 as_warn (_(".endef pseudo-op used before .def; ignored")); 2838 return; 2839 } 2840 2841 name = coff_sym_name; 2842 coff_sym_name = (char *) NULL; 2843 2844 /* If the symbol is a static or external, we have already gotten the 2845 appropriate type and class, so make sure we don't override those 2846 values. This is needed because there are some type and classes 2847 that are not in COFF, such as short data, etc. */ 2848 if (coff_sym_value != (symbolS *) NULL) 2849 { 2850 coff_symbol_typ = st_Nil; 2851 coff_storage_class = sc_Nil; 2852 } 2853 2854 coff_type.extra_sizes = coff_tag != (char *) NULL; 2855 if (coff_type.num_dims > 0) 2856 { 2857 int diff = coff_type.num_dims - coff_type.num_sizes; 2858 int i = coff_type.num_dims - 1; 2859 int j; 2860 2861 if (coff_type.num_sizes != 1 || diff < 0) 2862 { 2863 as_warn (_("bad COFF debugging information")); 2864 return; 2865 } 2866 2867 /* If this is an array, make sure the same number of dimensions 2868 and sizes were passed, creating extra sizes for multiply 2869 dimensioned arrays if not passed. */ 2870 coff_type.extra_sizes = 0; 2871 if (diff) 2872 { 2873 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1; 2874 while (j >= 0) 2875 { 2876 coff_type.sizes[j] = (((j - diff) >= 0) 2877 ? coff_type.sizes[j - diff] 2878 : 0); 2879 j--; 2880 } 2881 2882 coff_type.num_sizes = i + 1; 2883 for (i--; i >= 0; i--) 2884 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0 2885 ? 0 2886 : (coff_type.sizes[i + 1] 2887 / coff_type.dimensions[i + 1])); 2888 } 2889 } 2890 else if (coff_symbol_typ == st_Member 2891 && coff_type.num_sizes - coff_type.extra_sizes == 1) 2892 { 2893 /* Is this a bitfield? This is indicated by a structure member 2894 having a size field that isn't an array. */ 2895 coff_type.bitfield = 1; 2896 } 2897 2898 /* Except for enumeration members & begin/ending of scopes, put the 2899 type word in the aux. symbol table. */ 2900 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End) 2901 indx = 0; 2902 else if (coff_inside_enumeration) 2903 indx = cur_file_ptr->void_type; 2904 else 2905 { 2906 if (coff_type.basic_type == bt_Struct 2907 || coff_type.basic_type == bt_Union 2908 || coff_type.basic_type == bt_Enum) 2909 { 2910 if (coff_tag == (char *) NULL) 2911 { 2912 as_warn (_("no tag specified for %s"), name); 2913 return; 2914 } 2915 2916 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL, 2917 coff_type.basic_type); 2918 } 2919 2920 if (coff_is_function) 2921 { 2922 last_func_type_info = coff_type; 2923 last_func_sym_value = coff_sym_value; 2924 return; 2925 } 2926 2927 indx = add_aux_sym_tir (&coff_type, 2928 hash_yes, 2929 &cur_file_ptr->thash_head[0]); 2930 } 2931 2932 /* Do any last minute adjustments that are necessary. */ 2933 switch (coff_symbol_typ) 2934 { 2935 default: 2936 break; 2937 2938 /* For the beginning of structs, unions, and enumerations, the 2939 size info needs to be passed in the value field. */ 2940 case st_Block: 2941 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes 2942 != 1) 2943 { 2944 as_warn (_("bad COFF debugging information")); 2945 return; 2946 } 2947 else 2948 coff_value = coff_type.sizes[0]; 2949 2950 coff_inside_enumeration = (coff_type.orig_type == T_ENUM); 2951 break; 2952 2953 /* For the end of structs, unions, and enumerations, omit the 2954 name which is always ".eos". This needs to be done last, so 2955 that any error reporting above gives the correct name. */ 2956 case st_End: 2957 free (name); 2958 name = (char *) NULL; 2959 coff_value = 0; 2960 coff_inside_enumeration = 0; 2961 break; 2962 2963 /* Members of structures and unions that aren't bitfields, need 2964 to adjust the value from a byte offset to a bit offset. 2965 Members of enumerations do not have the value adjusted, and 2966 can be distinguished by indx == indexNil. For enumerations, 2967 update the maximum enumeration value. */ 2968 case st_Member: 2969 if (! coff_type.bitfield && ! coff_inside_enumeration) 2970 coff_value *= 8; 2971 2972 break; 2973 } 2974 2975 /* Add the symbol. */ 2976 sym = add_ecoff_symbol (name, 2977 coff_symbol_typ, 2978 coff_storage_class, 2979 coff_sym_value, 2980 coff_sym_addend, 2981 (symint_t) coff_value, 2982 indx); 2983 2984 /* deal with struct, union, and enum tags. */ 2985 if (coff_symbol_typ == st_Block) 2986 { 2987 /* Create or update the tag information. */ 2988 tag_t *tag_ptr = get_tag (name, 2989 sym, 2990 coff_type.basic_type); 2991 forward_t **pf; 2992 2993 /* Remember any forward references. */ 2994 for (pf = &sym->forward_ref; 2995 *pf != (forward_t *) NULL; 2996 pf = &(*pf)->next) 2997 ; 2998 *pf = tag_ptr->forward_ref; 2999 tag_ptr->forward_ref = (forward_t *) NULL; 3000 } 3001 } 3002 3003 /* Parse .end directives. */ 3005 3006 void 3007 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED) 3008 { 3009 char *name; 3010 char name_end; 3011 symbolS *ent; 3012 3013 if (cur_file_ptr == (efdr_t *) NULL) 3014 { 3015 as_warn (_(".end directive without a preceding .file directive")); 3016 demand_empty_rest_of_line (); 3017 return; 3018 } 3019 3020 if (cur_proc_ptr == (proc_t *) NULL) 3021 { 3022 as_warn (_(".end directive without a preceding .ent directive")); 3023 demand_empty_rest_of_line (); 3024 return; 3025 } 3026 3027 name = input_line_pointer; 3028 name_end = get_symbol_end (); 3029 3030 if (name == input_line_pointer) 3031 { 3032 as_warn (_(".end directive has no name")); 3033 *input_line_pointer = name_end; 3034 demand_empty_rest_of_line (); 3035 return; 3036 } 3037 3038 /* The value is the distance between the .end directive and the 3039 corresponding symbol. We create a fake symbol to hold the 3040 current location, and put in the offset when we write out the 3041 symbol. */ 3042 ent = symbol_find (name); 3043 if (ent == (symbolS *) NULL) 3044 as_warn (_(".end directive names unknown symbol")); 3045 else 3046 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, 3047 symbol_new ("L0\001", now_seg, 3048 (valueT) frag_now_fix (), 3049 frag_now), 3050 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 3051 3052 cur_proc_ptr = (proc_t *) NULL; 3053 3054 *input_line_pointer = name_end; 3055 demand_empty_rest_of_line (); 3056 } 3057 3058 /* Parse .ent directives. */ 3060 3061 void 3062 ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED) 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 (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 = input_line_pointer; 3078 name_end = get_symbol_end (); 3079 3080 if (name == input_line_pointer) 3081 { 3082 as_warn (_(".ent directive has no name")); 3083 *input_line_pointer = name_end; 3084 demand_empty_rest_of_line (); 3085 return; 3086 } 3087 3088 add_procedure (name); 3089 3090 *input_line_pointer = name_end; 3091 3092 /* The .ent directive is sometimes followed by a number. I'm not 3093 really sure what the number means. I don't see any way to store 3094 the information in the PDR. The Irix 4 assembler seems to ignore 3095 the information. */ 3096 SKIP_WHITESPACE (); 3097 if (*input_line_pointer == ',') 3098 { 3099 ++input_line_pointer; 3100 SKIP_WHITESPACE (); 3101 } 3102 if (ISDIGIT (*input_line_pointer) 3103 || *input_line_pointer == '-') 3104 (void) get_absolute_expression (); 3105 3106 demand_empty_rest_of_line (); 3107 } 3108 3109 /* Parse .extern directives. */ 3111 3112 void 3113 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED) 3114 { 3115 char *name; 3116 int c; 3117 symbolS *symbolp; 3118 valueT size; 3119 3120 name = input_line_pointer; 3121 c = get_symbol_end (); 3122 symbolp = symbol_find_or_make (name); 3123 *input_line_pointer = c; 3124 3125 S_SET_EXTERNAL (symbolp); 3126 3127 if (*input_line_pointer == ',') 3128 ++input_line_pointer; 3129 size = get_absolute_expression (); 3130 3131 symbol_get_obj (symbolp)->ecoff_extern_size = size; 3132 } 3133 3134 /* Parse .file directives. */ 3136 3137 void 3138 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED) 3139 { 3140 int indx; 3141 char *name; 3142 int len; 3143 3144 if (cur_proc_ptr != (proc_t *) NULL) 3145 { 3146 as_warn (_("no way to handle .file within .ent/.end section")); 3147 demand_empty_rest_of_line (); 3148 return; 3149 } 3150 3151 indx = (int) get_absolute_expression (); 3152 3153 /* FIXME: we don't have to save the name here. */ 3154 name = demand_copy_C_string (&len); 3155 3156 add_file (name, indx - 1, 0); 3157 3158 demand_empty_rest_of_line (); 3159 } 3160 3161 /* Parse .fmask directives. */ 3163 3164 void 3165 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED) 3166 { 3167 long val; 3168 3169 if (cur_proc_ptr == (proc_t *) NULL) 3170 { 3171 as_warn (_(".fmask outside of .ent")); 3172 demand_empty_rest_of_line (); 3173 return; 3174 } 3175 3176 if (get_absolute_expression_and_terminator (&val) != ',') 3177 { 3178 as_warn (_("bad .fmask directive")); 3179 --input_line_pointer; 3180 demand_empty_rest_of_line (); 3181 return; 3182 } 3183 3184 cur_proc_ptr->pdr.fregmask = val; 3185 cur_proc_ptr->pdr.fregoffset = get_absolute_expression (); 3186 3187 demand_empty_rest_of_line (); 3188 } 3189 3190 /* Parse .frame directives. */ 3192 3193 void 3194 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED) 3195 { 3196 long val; 3197 3198 if (cur_proc_ptr == (proc_t *) NULL) 3199 { 3200 as_warn (_(".frame outside of .ent")); 3201 demand_empty_rest_of_line (); 3202 return; 3203 } 3204 3205 cur_proc_ptr->pdr.framereg = tc_get_register (1); 3206 3207 SKIP_WHITESPACE (); 3208 if (*input_line_pointer++ != ',' 3209 || get_absolute_expression_and_terminator (&val) != ',') 3210 { 3211 as_warn (_("bad .frame directive")); 3212 --input_line_pointer; 3213 demand_empty_rest_of_line (); 3214 return; 3215 } 3216 3217 cur_proc_ptr->pdr.frameoffset = val; 3218 3219 cur_proc_ptr->pdr.pcreg = tc_get_register (0); 3220 3221 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to 3222 Sandro. I don't yet know where this value should be stored, if 3223 anywhere. Don't call demand_empty_rest_of_line (). */ 3224 s_ignore (42); 3225 } 3226 3227 /* Parse .mask directives. */ 3229 3230 void 3231 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED) 3232 { 3233 long val; 3234 3235 if (cur_proc_ptr == (proc_t *) NULL) 3236 { 3237 as_warn (_(".mask outside of .ent")); 3238 demand_empty_rest_of_line (); 3239 return; 3240 } 3241 3242 if (get_absolute_expression_and_terminator (&val) != ',') 3243 { 3244 as_warn (_("bad .mask directive")); 3245 --input_line_pointer; 3246 demand_empty_rest_of_line (); 3247 return; 3248 } 3249 3250 cur_proc_ptr->pdr.regmask = val; 3251 cur_proc_ptr->pdr.regoffset = get_absolute_expression (); 3252 3253 demand_empty_rest_of_line (); 3254 } 3255 3256 /* Parse .loc directives. */ 3258 3259 void 3260 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED) 3261 { 3262 lineno_list_t *list; 3263 symint_t lineno; 3264 3265 if (cur_file_ptr == (efdr_t *) NULL) 3266 { 3267 as_warn (_(".loc before .file")); 3268 demand_empty_rest_of_line (); 3269 return; 3270 } 3271 3272 if (now_seg != text_section) 3273 { 3274 as_warn (_(".loc outside of .text")); 3275 demand_empty_rest_of_line (); 3276 return; 3277 } 3278 3279 /* Skip the file number. */ 3280 SKIP_WHITESPACE (); 3281 get_absolute_expression (); 3282 SKIP_WHITESPACE (); 3283 3284 lineno = get_absolute_expression (); 3285 3286 #ifndef NO_LISTING 3287 if (listing) 3288 listing_source_line (lineno); 3289 #endif 3290 3291 /* If we're building stabs, then output a special label rather than 3292 ECOFF line number info. */ 3293 if (stabs_seen) 3294 { 3295 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text, 3296 symbol_new ("L0\001", now_seg, 3297 (valueT) frag_now_fix (), 3298 frag_now), 3299 (bfd_vma) 0, 0, lineno); 3300 return; 3301 } 3302 3303 list = allocate_lineno_list (); 3304 3305 list->next = (lineno_list_t *) NULL; 3306 list->file = cur_file_ptr; 3307 list->proc = cur_proc_ptr; 3308 list->frag = frag_now; 3309 list->paddr = frag_now_fix (); 3310 list->lineno = lineno; 3311 3312 /* We don't want to merge files which have line numbers. */ 3313 cur_file_ptr->fdr.fMerge = 0; 3314 3315 /* A .loc directive will sometimes appear before a .ent directive, 3316 which means that cur_proc_ptr will be NULL here. Arrange to 3317 patch this up. */ 3318 if (cur_proc_ptr == (proc_t *) NULL) 3319 { 3320 lineno_list_t **pl; 3321 3322 pl = &noproc_lineno; 3323 while (*pl != (lineno_list_t *) NULL) 3324 pl = &(*pl)->next; 3325 *pl = list; 3326 } 3327 else 3328 { 3329 last_lineno = list; 3330 *last_lineno_ptr = list; 3331 last_lineno_ptr = &list->next; 3332 } 3333 } 3334 3335 /* The MIPS assembler sometimes inserts nop instructions in the 3336 instruction stream. When this happens, we must patch up the .loc 3337 information so that it points to the instruction after the nop. */ 3338 3339 void 3340 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset) 3341 { 3342 if (last_lineno != NULL 3343 && last_lineno->frag == old_frag 3344 && last_lineno->paddr == old_frag_offset) 3345 { 3346 last_lineno->frag = frag_now; 3347 last_lineno->paddr = frag_now_fix (); 3348 } 3349 } 3350 3351 /* Make sure the @stabs symbol is emitted. */ 3353 3354 static void 3355 mark_stabs (int ignore ATTRIBUTE_UNUSED) 3356 { 3357 if (! stabs_seen) 3358 { 3359 /* Add a dummy @stabs dymbol. */ 3360 stabs_seen = 1; 3361 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info, 3362 (symbolS *) NULL, 3363 (bfd_vma) 0, (symint_t) -1, 3364 ECOFF_MARK_STAB (0)); 3365 } 3366 } 3367 3368 /* Parse .weakext directives. */ 3370 #ifndef TC_MIPS 3371 /* For TC_MIPS use the version in tc-mips.c. */ 3372 void 3373 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED) 3374 { 3375 char *name; 3376 int c; 3377 symbolS *symbolP; 3378 expressionS exp; 3379 3380 name = input_line_pointer; 3381 c = get_symbol_end (); 3382 symbolP = symbol_find_or_make (name); 3383 *input_line_pointer = c; 3384 3385 SKIP_WHITESPACE (); 3386 3387 if (*input_line_pointer == ',') 3388 { 3389 if (S_IS_DEFINED (symbolP)) 3390 { 3391 as_bad (_("symbol `%s' is already defined"), 3392 S_GET_NAME (symbolP)); 3393 ignore_rest_of_line (); 3394 return; 3395 } 3396 3397 ++input_line_pointer; 3398 SKIP_WHITESPACE (); 3399 if (! is_end_of_line[(unsigned char) *input_line_pointer]) 3400 { 3401 expression (&exp); 3402 if (exp.X_op != O_symbol) 3403 { 3404 as_bad (_("bad .weakext directive")); 3405 ignore_rest_of_line (); 3406 return; 3407 } 3408 symbol_set_value_expression (symbolP, &exp); 3409 } 3410 } 3411 3412 S_SET_WEAK (symbolP); 3413 3414 demand_empty_rest_of_line (); 3415 } 3416 #endif /* not TC_MIPS */ 3417 3418 /* Handle .stabs directives. The actual parsing routine is done by a 3420 generic routine. This routine is called via OBJ_PROCESS_STAB. 3421 When this is called, input_line_pointer will be pointing at the 3422 value field of the stab. 3423 3424 .stabs directives have five fields: 3425 "string" a string, encoding the type information. 3426 code a numeric code, defined in <stab.h> 3427 0 a zero 3428 desc a zero or line number 3429 value a numeric value or an address. 3430 3431 If the value is relocatable, we transform this into: 3432 iss points as an index into string space 3433 value value from lookup of the name 3434 st st from lookup of the name 3435 sc sc from lookup of the name 3436 index code|CODE_MASK 3437 3438 If the value is not relocatable, we transform this into: 3439 iss points as an index into string space 3440 value value 3441 st st_Nil 3442 sc sc_Nil 3443 index code|CODE_MASK 3444 3445 .stabn directives have four fields (string is null): 3446 code a numeric code, defined in <stab.h> 3447 0 a zero 3448 desc a zero or a line number 3449 value a numeric value or an address. */ 3450 3451 void 3452 ecoff_stab (segT sec ATTRIBUTE_UNUSED, 3453 int what, 3454 const char *string, 3455 int type, 3456 int other, 3457 int desc) 3458 { 3459 efdr_t *save_file_ptr = cur_file_ptr; 3460 symbolS *sym; 3461 symint_t value; 3462 bfd_vma addend; 3463 st_t st; 3464 sc_t sc; 3465 symint_t indx; 3466 localsym_t *hold = NULL; 3467 3468 ecoff_debugging_seen = 1; 3469 3470 /* We don't handle .stabd. */ 3471 if (what != 's' && what != 'n') 3472 { 3473 as_bad (_(".stab%c is not supported"), what); 3474 return; 3475 } 3476 3477 /* A .stabn uses a null name, not an empty string. */ 3478 if (what == 'n') 3479 string = NULL; 3480 3481 /* We ignore the other field. */ 3482 if (other != 0) 3483 as_warn (_(".stab%c: ignoring non-zero other field"), what); 3484 3485 /* Make sure we have a current file. */ 3486 if (cur_file_ptr == (efdr_t *) NULL) 3487 { 3488 add_file ((const char *) NULL, 0, 1); 3489 save_file_ptr = cur_file_ptr; 3490 } 3491 3492 /* For stabs in ECOFF, the first symbol must be @stabs. This is a 3493 signal to gdb. */ 3494 if (stabs_seen == 0) 3495 mark_stabs (0); 3496 3497 /* Line number stabs are handled differently, since they have two 3498 values, the line number and the address of the label. We use the 3499 index field (aka desc) to hold the line number, and the value 3500 field to hold the address. The symbol type is st_Label, which 3501 should be different from the other stabs, so that gdb can 3502 recognize it. */ 3503 if (type == N_SLINE) 3504 { 3505 SYMR dummy_symr; 3506 char *name; 3507 char name_end; 3508 3509 #ifndef NO_LISTING 3510 if (listing) 3511 listing_source_line ((unsigned int) desc); 3512 #endif 3513 3514 dummy_symr.index = desc; 3515 if (dummy_symr.index != desc) 3516 { 3517 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"), 3518 desc, what); 3519 return; 3520 } 3521 3522 name = input_line_pointer; 3523 name_end = get_symbol_end (); 3524 3525 sym = symbol_find_or_make (name); 3526 *input_line_pointer = name_end; 3527 3528 value = 0; 3529 addend = 0; 3530 st = st_Label; 3531 sc = sc_Text; 3532 indx = desc; 3533 } 3534 else 3535 { 3536 #ifndef NO_LISTING 3537 if (listing && (type == N_SO || type == N_SOL)) 3538 listing_source_file (string); 3539 #endif 3540 3541 if (ISDIGIT (*input_line_pointer) 3542 || *input_line_pointer == '-' 3543 || *input_line_pointer == '+') 3544 { 3545 st = st_Nil; 3546 sc = sc_Nil; 3547 sym = (symbolS *) NULL; 3548 value = get_absolute_expression (); 3549 addend = 0; 3550 } 3551 else if (! is_name_beginner ((unsigned char) *input_line_pointer)) 3552 { 3553 as_warn (_("illegal .stab%c directive, bad character"), what); 3554 return; 3555 } 3556 else 3557 { 3558 expressionS exp; 3559 3560 sc = sc_Nil; 3561 st = st_Nil; 3562 3563 expression (&exp); 3564 if (exp.X_op == O_constant) 3565 { 3566 sym = NULL; 3567 value = exp.X_add_number; 3568 addend = 0; 3569 } 3570 else if (exp.X_op == O_symbol) 3571 { 3572 sym = exp.X_add_symbol; 3573 value = 0; 3574 addend = exp.X_add_number; 3575 } 3576 else 3577 { 3578 sym = make_expr_symbol (&exp); 3579 value = 0; 3580 addend = 0; 3581 } 3582 } 3583 3584 indx = ECOFF_MARK_STAB (type); 3585 } 3586 3587 /* Don't store the stabs symbol we are creating as the type of the 3588 ECOFF symbol. We want to compute the type of the ECOFF symbol 3589 independently. */ 3590 if (sym != (symbolS *) NULL) 3591 hold = symbol_get_obj (sym)->ecoff_symbol; 3592 3593 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx); 3594 3595 if (sym != (symbolS *) NULL) 3596 symbol_get_obj (sym)->ecoff_symbol = hold; 3597 3598 /* Restore normal file type. */ 3599 cur_file_ptr = save_file_ptr; 3600 } 3601 3602 /* Frob an ECOFF symbol. Small common symbols go into a special 3604 .scommon section rather than bfd_com_section. */ 3605 3606 void 3607 ecoff_frob_symbol (symbolS *sym) 3608 { 3609 if (S_IS_COMMON (sym) 3610 && S_GET_VALUE (sym) > 0 3611 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput)) 3612 { 3613 static asection scom_section; 3614 static asymbol scom_symbol; 3615 3616 /* We must construct a fake section similar to bfd_com_section 3617 but with the name .scommon. */ 3618 if (scom_section.name == NULL) 3619 { 3620 scom_section = *bfd_com_section_ptr; 3621 scom_section.name = ".scommon"; 3622 scom_section.output_section = &scom_section; 3623 scom_section.symbol = &scom_symbol; 3624 scom_section.symbol_ptr_ptr = &scom_section.symbol; 3625 scom_symbol = *bfd_com_section_ptr->symbol; 3626 scom_symbol.name = ".scommon"; 3627 scom_symbol.section = &scom_section; 3628 } 3629 S_SET_SEGMENT (sym, &scom_section); 3630 } 3631 3632 /* Double check weak symbols. */ 3633 if (S_IS_WEAK (sym)) 3634 { 3635 if (S_IS_COMMON (sym)) 3636 as_bad (_("symbol `%s' can not be both weak and common"), 3637 S_GET_NAME (sym)); 3638 } 3639 } 3640 3641 /* Add bytes to the symbolic information buffer. */ 3643 3644 static char * 3645 ecoff_add_bytes (char **buf, 3646 char **bufend, 3647 char *bufptr, 3648 unsigned long need) 3649 { 3650 unsigned long at; 3651 unsigned long want; 3652 3653 at = bufptr - *buf; 3654 need -= *bufend - bufptr; 3655 if (need < PAGE_SIZE) 3656 need = PAGE_SIZE; 3657 want = (*bufend - *buf) + need; 3658 *buf = (char *) xrealloc (*buf, want); 3659 *bufend = *buf + want; 3660 return *buf + at; 3661 } 3662 3663 /* Adjust the symbolic information buffer to the alignment required 3664 for the ECOFF target debugging information. */ 3665 3666 static unsigned long 3667 ecoff_padding_adjust (const struct ecoff_debug_swap *backend, 3668 char **buf, 3669 char **bufend, 3670 unsigned long offset, 3671 char **bufptrptr) 3672 { 3673 bfd_size_type align; 3674 3675 align = backend->debug_align; 3676 if ((offset & (align - 1)) != 0) 3677 { 3678 unsigned long add; 3679 3680 add = align - (offset & (align - 1)); 3681 if ((unsigned long) (*bufend - (*buf + offset)) < add) 3682 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add); 3683 memset (*buf + offset, 0, add); 3684 offset += add; 3685 if (bufptrptr != (char **) NULL) 3686 *bufptrptr = *buf + offset; 3687 } 3688 3689 return offset; 3690 } 3691 3692 /* Build the line number information. */ 3693 3694 static unsigned long 3695 ecoff_build_lineno (const struct ecoff_debug_swap *backend, 3696 char **buf, 3697 char **bufend, 3698 unsigned long offset, 3699 long *linecntptr) 3700 { 3701 char *bufptr; 3702 lineno_list_t *l; 3703 lineno_list_t *last; 3704 efdr_t *file; 3705 proc_t *proc; 3706 unsigned long c; 3707 long iline; 3708 long totcount; 3709 lineno_list_t first; 3710 lineno_list_t *local_first_lineno = first_lineno; 3711 3712 if (linecntptr != (long *) NULL) 3713 *linecntptr = 0; 3714 3715 bufptr = *buf + offset; 3716 3717 file = (efdr_t *) NULL; 3718 proc = (proc_t *) NULL; 3719 last = (lineno_list_t *) NULL; 3720 c = offset; 3721 iline = 0; 3722 totcount = 0; 3723 3724 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to 3725 remove this code. */ 3726 /* For some reason the address of the first procedure is ignored 3727 when reading line numbers. This doesn't matter if the address of 3728 the first procedure is 0, but when gcc is generating MIPS 3729 embedded PIC code, it will put strings in the .text section 3730 before the first procedure. We cope by inserting a dummy line if 3731 the address of the first procedure is not 0. Hopefully this 3732 won't screw things up too badly. 3733 3734 Don't do this for ECOFF assembly source line numbers. They work 3735 without this extra attention. */ 3736 if (debug_type != DEBUG_ECOFF 3737 && first_proc_ptr != (proc_t *) NULL 3738 && local_first_lineno != (lineno_list_t *) NULL 3739 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym) 3740 + bfd_get_section_vma (stdoutput, 3741 S_GET_SEGMENT (first_proc_ptr->sym->as_sym))) 3742 != 0)) 3743 { 3744 first.file = local_first_lineno->file; 3745 first.proc = local_first_lineno->proc; 3746 first.frag = &zero_address_frag; 3747 first.paddr = 0; 3748 first.lineno = 0; 3749 3750 first.next = local_first_lineno; 3751 local_first_lineno = &first; 3752 } 3753 3754 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next) 3755 { 3756 long count; 3757 long delta; 3758 3759 /* Get the offset to the memory address of the next line number 3760 (in words). Do this first, so that we can skip ahead to the 3761 next useful line number entry. */ 3762 if (l->next == (lineno_list_t *) NULL) 3763 { 3764 /* We want a count of zero, but it will be decremented 3765 before it is used. */ 3766 count = 1; 3767 } 3768 else if (l->next->frag->fr_address + l->next->paddr 3769 > l->frag->fr_address + l->paddr) 3770 { 3771 count = ((l->next->frag->fr_address + l->next->paddr 3772 - (l->frag->fr_address + l->paddr)) 3773 >> 2); 3774 } 3775 else 3776 { 3777 /* Don't change last, so we still get the right delta. */ 3778 continue; 3779 } 3780 3781 if (l->file != file || l->proc != proc) 3782 { 3783 if (l->proc != proc && proc != (proc_t *) NULL) 3784 proc->pdr.lnHigh = last->lineno; 3785 if (l->file != file && file != (efdr_t *) NULL) 3786 { 3787 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3788 file->fdr.cline = totcount + count; 3789 if (linecntptr != (long *) NULL) 3790 *linecntptr += totcount + count; 3791 totcount = 0; 3792 } 3793 3794 if (l->file != file) 3795 { 3796 efdr_t *last_file = file; 3797 3798 file = l->file; 3799 if (last_file != (efdr_t *) NULL) 3800 file->fdr.ilineBase 3801 = last_file->fdr.ilineBase + last_file->fdr.cline; 3802 else 3803 file->fdr.ilineBase = 0; 3804 file->fdr.cbLineOffset = c; 3805 } 3806 if (l->proc != proc) 3807 { 3808 proc = l->proc; 3809 if (proc != (proc_t *) NULL) 3810 { 3811 proc->pdr.lnLow = l->lineno; 3812 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset; 3813 proc->pdr.iline = totcount; 3814 } 3815 } 3816 3817 last = (lineno_list_t *) NULL; 3818 } 3819 3820 totcount += count; 3821 3822 /* Get the offset to this line number. */ 3823 if (last == (lineno_list_t *) NULL) 3824 delta = 0; 3825 else 3826 delta = l->lineno - last->lineno; 3827 3828 /* Put in the offset to this line number. */ 3829 while (delta != 0) 3830 { 3831 int setcount; 3832 3833 /* 1 is added to each count read. */ 3834 --count; 3835 /* We can only adjust the word count by up to 15 words at a 3836 time. */ 3837 if (count <= 0x0f) 3838 { 3839 setcount = count; 3840 count = 0; 3841 } 3842 else 3843 { 3844 setcount = 0x0f; 3845 count -= 0x0f; 3846 } 3847 if (delta >= -7 && delta <= 7) 3848 { 3849 if (bufptr >= *bufend) 3850 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3851 *bufptr++ = setcount + (delta << 4); 3852 delta = 0; 3853 ++c; 3854 } 3855 else 3856 { 3857 int set; 3858 3859 if (*bufend - bufptr < 3) 3860 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3); 3861 *bufptr++ = setcount + (8 << 4); 3862 if (delta < -0x8000) 3863 { 3864 set = -0x8000; 3865 delta += 0x8000; 3866 } 3867 else if (delta > 0x7fff) 3868 { 3869 set = 0x7fff; 3870 delta -= 0x7fff; 3871 } 3872 else 3873 { 3874 set = delta; 3875 delta = 0; 3876 } 3877 *bufptr++ = set >> 8; 3878 *bufptr++ = set & 0xffff; 3879 c += 3; 3880 } 3881 } 3882 3883 /* Finish adjusting the count. */ 3884 while (count > 0) 3885 { 3886 if (bufptr >= *bufend) 3887 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3888 /* 1 is added to each count read. */ 3889 --count; 3890 if (count > 0x0f) 3891 { 3892 *bufptr++ = 0x0f; 3893 count -= 0x0f; 3894 } 3895 else 3896 { 3897 *bufptr++ = count; 3898 count = 0; 3899 } 3900 ++c; 3901 } 3902 3903 ++iline; 3904 last = l; 3905 } 3906 3907 if (proc != (proc_t *) NULL) 3908 proc->pdr.lnHigh = last->lineno; 3909 if (file != (efdr_t *) NULL) 3910 { 3911 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3912 file->fdr.cline = totcount; 3913 } 3914 3915 if (linecntptr != (long *) NULL) 3916 *linecntptr += totcount; 3917 3918 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr); 3919 3920 return c; 3921 } 3922 3923 /* Build and swap out the symbols. */ 3924 3925 static unsigned long 3926 ecoff_build_symbols (const struct ecoff_debug_swap *backend, 3927 char **buf, 3928 char **bufend, 3929 unsigned long offset) 3930 { 3931 const bfd_size_type external_sym_size = backend->external_sym_size; 3932 void (* const swap_sym_out) (bfd *, const SYMR *, void *) 3933 = backend->swap_sym_out; 3934 char *sym_out; 3935 long isym; 3936 vlinks_t *file_link; 3937 3938 sym_out = *buf + offset; 3939 3940 isym = 0; 3941 3942 /* The symbols are stored by file. */ 3943 for (file_link = file_desc.first; 3944 file_link != (vlinks_t *) NULL; 3945 file_link = file_link->next) 3946 { 3947 int ifilesym; 3948 int fil_cnt; 3949 efdr_t *fil_ptr; 3950 efdr_t *fil_end; 3951 3952 if (file_link->next == (vlinks_t *) NULL) 3953 fil_cnt = file_desc.objects_last_page; 3954 else 3955 fil_cnt = file_desc.objects_per_page; 3956 fil_ptr = file_link->datum->file; 3957 fil_end = fil_ptr + fil_cnt; 3958 for (; fil_ptr < fil_end; fil_ptr++) 3959 { 3960 vlinks_t *sym_link; 3961 3962 fil_ptr->fdr.isymBase = isym; 3963 ifilesym = isym; 3964 for (sym_link = fil_ptr->symbols.first; 3965 sym_link != (vlinks_t *) NULL; 3966 sym_link = sym_link->next) 3967 { 3968 int sym_cnt; 3969 localsym_t *sym_ptr; 3970 localsym_t *sym_end; 3971 3972 if (sym_link->next == (vlinks_t *) NULL) 3973 sym_cnt = fil_ptr->symbols.objects_last_page; 3974 else 3975 sym_cnt = fil_ptr->symbols.objects_per_page; 3976 sym_ptr = sym_link->datum->sym; 3977 sym_end = sym_ptr + sym_cnt; 3978 for (; sym_ptr < sym_end; sym_ptr++) 3979 { 3980 int local; 3981 symbolS *as_sym; 3982 forward_t *f; 3983 3984 know (sym_ptr->file_ptr == fil_ptr); 3985 3986 /* If there is no associated gas symbol, then this 3987 is a pure debugging symbol. We have already 3988 added the name (if any) to fil_ptr->strings. 3989 Otherwise we must decide whether this is an 3990 external or a local symbol (actually, it may be 3991 both if the local provides additional debugging 3992 information for the external). */ 3993 local = 1; 3994 as_sym = sym_ptr->as_sym; 3995 if (as_sym != (symbolS *) NULL) 3996 { 3997 symint_t indx; 3998 3999 /* The value of a block start symbol is the 4000 offset from the start of the procedure. For 4001 other symbols we just use the gas value (but 4002 we must offset it by the vma of the section, 4003 just as BFD does, because BFD will not see 4004 this value). */ 4005 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block 4006 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text) 4007 { 4008 symbolS *begin_sym; 4009 4010 know (sym_ptr->proc_ptr != (proc_t *) NULL); 4011 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 4012 if (S_GET_SEGMENT (as_sym) 4013 != S_GET_SEGMENT (begin_sym)) 4014 as_warn (_(".begin/.bend in different segments")); 4015 sym_ptr->ecoff_sym.asym.value = 4016 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 4017 } 4018 else 4019 sym_ptr->ecoff_sym.asym.value = 4020 (S_GET_VALUE (as_sym) 4021 + bfd_get_section_vma (stdoutput, 4022 S_GET_SEGMENT (as_sym)) 4023 + sym_ptr->addend); 4024 4025 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym); 4026 4027 /* Set st_Proc to st_StaticProc for local 4028 functions. */ 4029 if (sym_ptr->ecoff_sym.asym.st == st_Proc 4030 && S_IS_DEFINED (as_sym) 4031 && ! S_IS_EXTERNAL (as_sym) 4032 && ! S_IS_WEAK (as_sym)) 4033 sym_ptr->ecoff_sym.asym.st = st_StaticProc; 4034 4035 /* Get the type and storage class based on where 4036 the symbol actually wound up. Traditionally, 4037 N_LBRAC and N_RBRAC are *not* relocated. */ 4038 indx = sym_ptr->ecoff_sym.asym.index; 4039 if (sym_ptr->ecoff_sym.asym.st == st_Nil 4040 && sym_ptr->ecoff_sym.asym.sc == sc_Nil 4041 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4042 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC) 4043 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC)))) 4044 { 4045 segT seg; 4046 const char *segname; 4047 st_t st; 4048 sc_t sc; 4049 4050 seg = S_GET_SEGMENT (as_sym); 4051 segname = segment_name (seg); 4052 4053 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4054 && (S_IS_EXTERNAL (as_sym) 4055 || S_IS_WEAK (as_sym) 4056 || ! S_IS_DEFINED (as_sym))) 4057 { 4058 if ((symbol_get_bfdsym (as_sym)->flags 4059 & BSF_FUNCTION) != 0) 4060 st = st_Proc; 4061 else 4062 st = st_Global; 4063 } 4064 else if (seg == text_section) 4065 st = st_Label; 4066 else 4067 st = st_Static; 4068 4069 if (! S_IS_DEFINED (as_sym)) 4070 { 4071 valueT s; 4072 4073 s = symbol_get_obj (as_sym)->ecoff_extern_size; 4074 if (s == 0 4075 || s > bfd_get_gp_size (stdoutput)) 4076 sc = sc_Undefined; 4077 else 4078 { 4079 sc = sc_SUndefined; 4080 sym_ptr->ecoff_sym.asym.value = s; 4081 } 4082 #ifdef S_SET_SIZE 4083 S_SET_SIZE (as_sym, s); 4084 #endif 4085 } 4086 else if (S_IS_COMMON (as_sym)) 4087 { 4088 if (S_GET_VALUE (as_sym) > 0 4089 && (S_GET_VALUE (as_sym) 4090 <= bfd_get_gp_size (stdoutput))) 4091 sc = sc_SCommon; 4092 else 4093 sc = sc_Common; 4094 } 4095 else if (seg == text_section) 4096 sc = sc_Text; 4097 else if (seg == data_section) 4098 sc = sc_Data; 4099 else if (strcmp (segname, ".rdata") == 0 4100 || strcmp (segname, ".rodata") == 0) 4101 sc = sc_RData; 4102 else if (strcmp (segname, ".sdata") == 0) 4103 sc = sc_SData; 4104 else if (seg == bss_section) 4105 sc = sc_Bss; 4106 else if (strcmp (segname, ".sbss") == 0) 4107 sc = sc_SBss; 4108 else if (seg == bfd_abs_section_ptr) 4109 sc = sc_Abs; 4110 else 4111 { 4112 /* This must be a user named section. 4113 This is not possible in ECOFF, but it 4114 is in ELF. */ 4115 sc = sc_Data; 4116 } 4117 4118 sym_ptr->ecoff_sym.asym.st = (int) st; 4119 sym_ptr->ecoff_sym.asym.sc = (int) sc; 4120 } 4121 4122 /* This is just an external symbol if it is 4123 outside a procedure and it has a type. 4124 FIXME: g++ will generate symbols which have 4125 different names in the debugging information 4126 than the actual symbol. Should we handle 4127 them here? */ 4128 if ((S_IS_EXTERNAL (as_sym) 4129 || S_IS_WEAK (as_sym) 4130 || ! S_IS_DEFINED (as_sym)) 4131 && sym_ptr->proc_ptr == (proc_t *) NULL 4132 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil 4133 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)) 4134 local = 0; 4135 4136 /* This is just an external symbol if it is a 4137 common symbol. */ 4138 if (S_IS_COMMON (as_sym)) 4139 local = 0; 4140 4141 /* If an st_end symbol has an associated gas 4142 symbol, then it is a local label created for 4143 a .bend or .end directive. Stabs line 4144 numbers will have \001 in the names. */ 4145 if (local 4146 && sym_ptr->ecoff_sym.asym.st != st_End 4147 && strchr (sym_ptr->name, '\001') == 0) 4148 sym_ptr->ecoff_sym.asym.iss = 4149 add_string (&fil_ptr->strings, 4150 fil_ptr->str_hash, 4151 sym_ptr->name, 4152 (shash_t **) NULL); 4153 } 4154 4155 /* We now know the index of this symbol; fill in 4156 locations that have been waiting for that 4157 information. */ 4158 if (sym_ptr->begin_ptr != (localsym_t *) NULL) 4159 { 4160 localsym_t *begin_ptr; 4161 st_t begin_type; 4162 4163 know (local); 4164 begin_ptr = sym_ptr->begin_ptr; 4165 know (begin_ptr->sym_index != -1); 4166 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index; 4167 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4168 sym_ptr->ecoff_sym.asym.iss = 4169 begin_ptr->ecoff_sym.asym.iss; 4170 4171 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st; 4172 if (begin_type == st_File 4173 || begin_type == st_Block) 4174 { 4175 begin_ptr->ecoff_sym.asym.index = 4176 isym - ifilesym + 1; 4177 (*swap_sym_out) (stdoutput, 4178 &begin_ptr->ecoff_sym.asym, 4179 (*buf 4180 + offset 4181 + (begin_ptr->sym_index 4182 * external_sym_size))); 4183 } 4184 else 4185 { 4186 know (begin_ptr->index_ptr != (aux_t *) NULL); 4187 begin_ptr->index_ptr->data.isym = 4188 isym - ifilesym + 1; 4189 } 4190 4191 /* The value of the symbol marking the end of a 4192 procedure is the size of the procedure. The 4193 value of the symbol marking the end of a 4194 block is the offset from the start of the 4195 procedure to the block. */ 4196 if (begin_type == st_Proc 4197 || begin_type == st_StaticProc) 4198 { 4199 know (as_sym != (symbolS *) NULL); 4200 know (begin_ptr->as_sym != (symbolS *) NULL); 4201 if (S_GET_SEGMENT (as_sym) 4202 != S_GET_SEGMENT (begin_ptr->as_sym)) 4203 as_warn (_(".begin/.bend in different segments")); 4204 sym_ptr->ecoff_sym.asym.value = 4205 (S_GET_VALUE (as_sym) 4206 - S_GET_VALUE (begin_ptr->as_sym)); 4207 4208 /* If the size is odd, this is probably a 4209 mips16 function; force it to be even. */ 4210 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0) 4211 ++sym_ptr->ecoff_sym.asym.value; 4212 4213 #ifdef S_SET_SIZE 4214 S_SET_SIZE (begin_ptr->as_sym, 4215 sym_ptr->ecoff_sym.asym.value); 4216 #endif 4217 } 4218 else if (begin_type == st_Block 4219 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4220 { 4221 symbolS *begin_sym; 4222 4223 know (as_sym != (symbolS *) NULL); 4224 know (sym_ptr->proc_ptr != (proc_t *) NULL); 4225 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 4226 if (S_GET_SEGMENT (as_sym) 4227 != S_GET_SEGMENT (begin_sym)) 4228 as_warn (_(".begin/.bend in different segments")); 4229 sym_ptr->ecoff_sym.asym.value = 4230 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 4231 } 4232 } 4233 4234 for (f = sym_ptr->forward_ref; 4235 f != (forward_t *) NULL; 4236 f = f->next) 4237 { 4238 know (local); 4239 f->ifd_ptr->data.isym = fil_ptr->file_index; 4240 f->index_ptr->data.rndx.index = isym - ifilesym; 4241 } 4242 4243 if (local) 4244 { 4245 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size) 4246 sym_out = ecoff_add_bytes (buf, bufend, 4247 sym_out, 4248 external_sym_size); 4249 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym, 4250 sym_out); 4251 sym_out += external_sym_size; 4252 4253 sym_ptr->sym_index = isym; 4254 4255 if (sym_ptr->proc_ptr != (proc_t *) NULL 4256 && sym_ptr->proc_ptr->sym == sym_ptr) 4257 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym; 4258 4259 ++isym; 4260 } 4261 4262 /* Record the local symbol index and file number in 4263 case this is an external symbol. Note that this 4264 destroys the asym.index field. */ 4265 if (as_sym != (symbolS *) NULL 4266 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr) 4267 { 4268 if ((sym_ptr->ecoff_sym.asym.st == st_Proc 4269 || sym_ptr->ecoff_sym.asym.st == st_StaticProc) 4270 && local) 4271 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1; 4272 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index; 4273 4274 /* Don't try to merge an FDR which has an 4275 external symbol attached to it. */ 4276 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym)) 4277 fil_ptr->fdr.fMerge = 0; 4278 } 4279 } 4280 } 4281 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase; 4282 } 4283 } 4284 4285 return offset + isym * external_sym_size; 4286 } 4287 4288 /* Swap out the procedure information. */ 4289 4290 static unsigned long 4291 ecoff_build_procs (const struct ecoff_debug_swap *backend, 4292 char **buf, 4293 char **bufend, 4294 unsigned long offset) 4295 { 4296 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4297 void (* const swap_pdr_out) (bfd *, const PDR *, void *) 4298 = backend->swap_pdr_out; 4299 char *pdr_out; 4300 long iproc; 4301 vlinks_t *file_link; 4302 4303 pdr_out = *buf + offset; 4304 4305 iproc = 0; 4306 4307 /* The procedures are stored by file. */ 4308 for (file_link = file_desc.first; 4309 file_link != (vlinks_t *) NULL; 4310 file_link = file_link->next) 4311 { 4312 int fil_cnt; 4313 efdr_t *fil_ptr; 4314 efdr_t *fil_end; 4315 4316 if (file_link->next == (vlinks_t *) NULL) 4317 fil_cnt = file_desc.objects_last_page; 4318 else 4319 fil_cnt = file_desc.objects_per_page; 4320 fil_ptr = file_link->datum->file; 4321 fil_end = fil_ptr + fil_cnt; 4322 for (; fil_ptr < fil_end; fil_ptr++) 4323 { 4324 vlinks_t *proc_link; 4325 int first; 4326 4327 fil_ptr->fdr.ipdFirst = iproc; 4328 first = 1; 4329 for (proc_link = fil_ptr->procs.first; 4330 proc_link != (vlinks_t *) NULL; 4331 proc_link = proc_link->next) 4332 { 4333 int prc_cnt; 4334 proc_t *proc_ptr; 4335 proc_t *proc_end; 4336 4337 if (proc_link->next == (vlinks_t *) NULL) 4338 prc_cnt = fil_ptr->procs.objects_last_page; 4339 else 4340 prc_cnt = fil_ptr->procs.objects_per_page; 4341 proc_ptr = proc_link->datum->proc; 4342 proc_end = proc_ptr + prc_cnt; 4343 for (; proc_ptr < proc_end; proc_ptr++) 4344 { 4345 symbolS *adr_sym; 4346 unsigned long adr; 4347 4348 adr_sym = proc_ptr->sym->as_sym; 4349 adr = (S_GET_VALUE (adr_sym) 4350 + bfd_get_section_vma (stdoutput, 4351 S_GET_SEGMENT (adr_sym))); 4352 if (first) 4353 { 4354 /* This code used to force the adr of the very 4355 first fdr to be 0. However, the native tools 4356 don't do that, and I can't remember why it 4357 used to work that way, so I took it out. */ 4358 fil_ptr->fdr.adr = adr; 4359 first = 0; 4360 } 4361 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr; 4362 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size) 4363 pdr_out = ecoff_add_bytes (buf, bufend, 4364 pdr_out, 4365 external_pdr_size); 4366 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out); 4367 pdr_out += external_pdr_size; 4368 ++iproc; 4369 } 4370 } 4371 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst; 4372 } 4373 } 4374 4375 return offset + iproc * external_pdr_size; 4376 } 4377 4378 /* Swap out the aux information. */ 4379 4380 static unsigned long 4381 ecoff_build_aux (const struct ecoff_debug_swap *backend, 4382 char **buf, 4383 char **bufend, 4384 unsigned long offset) 4385 { 4386 int bigendian; 4387 union aux_ext *aux_out; 4388 long iaux; 4389 vlinks_t *file_link; 4390 4391 bigendian = bfd_big_endian (stdoutput); 4392 4393 aux_out = (union aux_ext *) (*buf + offset); 4394 4395 iaux = 0; 4396 4397 /* The aux entries are stored by file. */ 4398 for (file_link = file_desc.first; 4399 file_link != (vlinks_t *) NULL; 4400 file_link = file_link->next) 4401 { 4402 int fil_cnt; 4403 efdr_t *fil_ptr; 4404 efdr_t *fil_end; 4405 4406 if (file_link->next == (vlinks_t *) NULL) 4407 fil_cnt = file_desc.objects_last_page; 4408 else 4409 fil_cnt = file_desc.objects_per_page; 4410 fil_ptr = file_link->datum->file; 4411 fil_end = fil_ptr + fil_cnt; 4412 for (; fil_ptr < fil_end; fil_ptr++) 4413 { 4414 vlinks_t *aux_link; 4415 4416 fil_ptr->fdr.fBigendian = bigendian; 4417 fil_ptr->fdr.iauxBase = iaux; 4418 for (aux_link = fil_ptr->aux_syms.first; 4419 aux_link != (vlinks_t *) NULL; 4420 aux_link = aux_link->next) 4421 { 4422 int aux_cnt; 4423 aux_t *aux_ptr; 4424 aux_t *aux_end; 4425 4426 if (aux_link->next == (vlinks_t *) NULL) 4427 aux_cnt = fil_ptr->aux_syms.objects_last_page; 4428 else 4429 aux_cnt = fil_ptr->aux_syms.objects_per_page; 4430 aux_ptr = aux_link->datum->aux; 4431 aux_end = aux_ptr + aux_cnt; 4432 for (; aux_ptr < aux_end; aux_ptr++) 4433 { 4434 if ((unsigned long) (*bufend - (char *) aux_out) 4435 < sizeof (union aux_ext)) 4436 aux_out = ((union aux_ext *) 4437 ecoff_add_bytes (buf, bufend, 4438 (char *) aux_out, 4439 sizeof (union aux_ext))); 4440 switch (aux_ptr->type) 4441 { 4442 case aux_tir: 4443 (*backend->swap_tir_out) (bigendian, 4444 &aux_ptr->data.ti, 4445 &aux_out->a_ti); 4446 break; 4447 case aux_rndx: 4448 (*backend->swap_rndx_out) (bigendian, 4449 &aux_ptr->data.rndx, 4450 &aux_out->a_rndx); 4451 break; 4452 case aux_dnLow: 4453 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow, 4454 aux_out); 4455 break; 4456 case aux_dnHigh: 4457 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh, 4458 aux_out); 4459 break; 4460 case aux_isym: 4461 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym, 4462 aux_out); 4463 break; 4464 case aux_iss: 4465 AUX_PUT_ISS (bigendian, aux_ptr->data.iss, 4466 aux_out); 4467 break; 4468 case aux_width: 4469 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width, 4470 aux_out); 4471 break; 4472 case aux_count: 4473 AUX_PUT_COUNT (bigendian, aux_ptr->data.count, 4474 aux_out); 4475 break; 4476 } 4477 4478 ++aux_out; 4479 ++iaux; 4480 } 4481 } 4482 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase; 4483 } 4484 } 4485 4486 return ecoff_padding_adjust (backend, buf, bufend, 4487 offset + iaux * sizeof (union aux_ext), 4488 (char **) NULL); 4489 } 4490 4491 /* Copy out the strings from a varray_t. This returns the number of 4492 bytes copied, rather than the new offset. */ 4493 4494 static unsigned long 4495 ecoff_build_strings (char **buf, 4496 char **bufend, 4497 unsigned long offset, 4498 varray_t *vp) 4499 { 4500 unsigned long istr; 4501 char *str_out; 4502 vlinks_t *str_link; 4503 4504 str_out = *buf + offset; 4505 4506 istr = 0; 4507 4508 for (str_link = vp->first; 4509 str_link != (vlinks_t *) NULL; 4510 str_link = str_link->next) 4511 { 4512 unsigned long str_cnt; 4513 4514 if (str_link->next == (vlinks_t *) NULL) 4515 str_cnt = vp->objects_last_page; 4516 else 4517 str_cnt = vp->objects_per_page; 4518 4519 if ((unsigned long)(*bufend - str_out) < str_cnt) 4520 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt); 4521 4522 memcpy (str_out, str_link->datum->byte, str_cnt); 4523 str_out += str_cnt; 4524 istr += str_cnt; 4525 } 4526 4527 return istr; 4528 } 4529 4530 /* Dump out the local strings. */ 4531 4532 static unsigned long 4533 ecoff_build_ss (const struct ecoff_debug_swap *backend, 4534 char **buf, 4535 char **bufend, 4536 unsigned long offset) 4537 { 4538 long iss; 4539 vlinks_t *file_link; 4540 4541 iss = 0; 4542 4543 for (file_link = file_desc.first; 4544 file_link != (vlinks_t *) NULL; 4545 file_link = file_link->next) 4546 { 4547 int fil_cnt; 4548 efdr_t *fil_ptr; 4549 efdr_t *fil_end; 4550 4551 if (file_link->next == (vlinks_t *) NULL) 4552 fil_cnt = file_desc.objects_last_page; 4553 else 4554 fil_cnt = file_desc.objects_per_page; 4555 fil_ptr = file_link->datum->file; 4556 fil_end = fil_ptr + fil_cnt; 4557 for (; fil_ptr < fil_end; fil_ptr++) 4558 { 4559 long ss_cnt; 4560 4561 fil_ptr->fdr.issBase = iss; 4562 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss, 4563 &fil_ptr->strings); 4564 fil_ptr->fdr.cbSs = ss_cnt; 4565 iss += ss_cnt; 4566 } 4567 } 4568 4569 return ecoff_padding_adjust (backend, buf, bufend, offset + iss, 4570 (char **) NULL); 4571 } 4572 4573 /* Swap out the file descriptors. */ 4574 4575 static unsigned long 4576 ecoff_build_fdr (const struct ecoff_debug_swap *backend, 4577 char **buf, 4578 char **bufend, 4579 unsigned long offset) 4580 { 4581 const bfd_size_type external_fdr_size = backend->external_fdr_size; 4582 void (* const swap_fdr_out) (bfd *, const FDR *, void *) 4583 = backend->swap_fdr_out; 4584 long ifile; 4585 char *fdr_out; 4586 vlinks_t *file_link; 4587 4588 ifile = 0; 4589 4590 fdr_out = *buf + offset; 4591 4592 for (file_link = file_desc.first; 4593 file_link != (vlinks_t *) NULL; 4594 file_link = file_link->next) 4595 { 4596 int fil_cnt; 4597 efdr_t *fil_ptr; 4598 efdr_t *fil_end; 4599 4600 if (file_link->next == (vlinks_t *) NULL) 4601 fil_cnt = file_desc.objects_last_page; 4602 else 4603 fil_cnt = file_desc.objects_per_page; 4604 fil_ptr = file_link->datum->file; 4605 fil_end = fil_ptr + fil_cnt; 4606 for (; fil_ptr < fil_end; fil_ptr++) 4607 { 4608 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size) 4609 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out, 4610 external_fdr_size); 4611 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out); 4612 fdr_out += external_fdr_size; 4613 ++ifile; 4614 } 4615 } 4616 4617 return offset + ifile * external_fdr_size; 4618 } 4619 4620 /* Set up the external symbols. These are supposed to be handled by 4621 the backend. This routine just gets the right information and 4622 calls a backend function to deal with it. */ 4623 4624 static void 4625 ecoff_setup_ext (void) 4626 { 4627 symbolS *sym; 4628 4629 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4630 { 4631 if (symbol_get_obj (sym)->ecoff_symbol == NULL) 4632 continue; 4633 4634 /* If this is a local symbol, then force the fields to zero. */ 4635 if (! S_IS_EXTERNAL (sym) 4636 && ! S_IS_WEAK (sym) 4637 && S_IS_DEFINED (sym)) 4638 { 4639 struct localsym *lsym; 4640 4641 lsym = symbol_get_obj (sym)->ecoff_symbol; 4642 lsym->ecoff_sym.asym.value = 0; 4643 lsym->ecoff_sym.asym.st = (int) st_Nil; 4644 lsym->ecoff_sym.asym.sc = (int) sc_Nil; 4645 lsym->ecoff_sym.asym.index = indexNil; 4646 } 4647 4648 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym); 4649 } 4650 } 4651 4652 /* Build the ECOFF debugging information. */ 4653 4654 unsigned long 4655 ecoff_build_debug (HDRR *hdr, 4656 char **bufp, 4657 const struct ecoff_debug_swap *backend) 4658 { 4659 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4660 tag_t *ptag; 4661 tag_t *ptag_next; 4662 efdr_t *fil_ptr; 4663 int end_warning; 4664 efdr_t *hold_file_ptr; 4665 proc_t *hold_proc_ptr; 4666 symbolS *sym; 4667 char *buf; 4668 char *bufend; 4669 unsigned long offset; 4670 4671 /* Make sure we have a file. */ 4672 if (first_file == (efdr_t *) NULL) 4673 add_file ((const char *) NULL, 0, 1); 4674 4675 /* Handle any top level tags. */ 4676 for (ptag = top_tag_head->first_tag; 4677 ptag != (tag_t *) NULL; 4678 ptag = ptag_next) 4679 { 4680 if (ptag->forward_ref != (forward_t *) NULL) 4681 add_unknown_tag (ptag); 4682 4683 ptag_next = ptag->same_block; 4684 ptag->hash_ptr->tag_ptr = ptag->same_name; 4685 free_tag (ptag); 4686 } 4687 4688 free_thead (top_tag_head); 4689 4690 /* Look through the symbols. Add debugging information for each 4691 symbol that has not already received it. */ 4692 hold_file_ptr = cur_file_ptr; 4693 hold_proc_ptr = cur_proc_ptr; 4694 cur_proc_ptr = (proc_t *) NULL; 4695 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4696 { 4697 if (symbol_get_obj (sym)->ecoff_symbol != NULL 4698 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL 4699 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0) 4700 continue; 4701 4702 cur_file_ptr = symbol_get_obj (sym)->ecoff_file; 4703 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym, 4704 (bfd_vma) 0, S_GET_VALUE (sym), indexNil); 4705 } 4706 cur_proc_ptr = hold_proc_ptr; 4707 cur_file_ptr = hold_file_ptr; 4708 4709 /* Output an ending symbol for all the files. We have to do this 4710 here for the last file, so we may as well do it for all of the 4711 files. */ 4712 end_warning = 0; 4713 for (fil_ptr = first_file; 4714 fil_ptr != (efdr_t *) NULL; 4715 fil_ptr = fil_ptr->next_file) 4716 { 4717 cur_file_ptr = fil_ptr; 4718 while (cur_file_ptr->cur_scope != (scope_t *) NULL 4719 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL) 4720 { 4721 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev; 4722 if (! end_warning && ! cur_file_ptr->fake) 4723 { 4724 as_warn (_("missing .end or .bend at end of file")); 4725 end_warning = 1; 4726 } 4727 } 4728 if (cur_file_ptr->cur_scope != (scope_t *) NULL) 4729 (void) add_ecoff_symbol ((const char *) NULL, 4730 st_End, sc_Text, 4731 (symbolS *) NULL, 4732 (bfd_vma) 0, 4733 (symint_t) 0, 4734 (symint_t) 0); 4735 } 4736 4737 /* Build the symbolic information. */ 4738 offset = 0; 4739 buf = (char *) xmalloc (PAGE_SIZE); 4740 bufend = buf + PAGE_SIZE; 4741 4742 /* Build the line number information. */ 4743 hdr->cbLineOffset = offset; 4744 offset = ecoff_build_lineno (backend, &buf, &bufend, offset, 4745 &hdr->ilineMax); 4746 hdr->cbLine = offset - hdr->cbLineOffset; 4747 4748 /* We don't use dense numbers at all. */ 4749 hdr->idnMax = 0; 4750 hdr->cbDnOffset = 0; 4751 4752 /* We can't build the PDR table until we have built the symbols, 4753 because a PDR contains a symbol index. However, we set aside 4754 space at this point. */ 4755 hdr->ipdMax = proc_cnt; 4756 hdr->cbPdOffset = offset; 4757 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size) 4758 (void) ecoff_add_bytes (&buf, &bufend, buf + offset, 4759 proc_cnt * external_pdr_size); 4760 offset += proc_cnt * external_pdr_size; 4761 4762 /* Build the local symbols. */ 4763 hdr->cbSymOffset = offset; 4764 offset = ecoff_build_symbols (backend, &buf, &bufend, offset); 4765 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size; 4766 4767 /* Building the symbols initializes the symbol index in the PDR's. 4768 Now we can swap out the PDR's. */ 4769 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset); 4770 4771 /* We don't use optimization symbols. */ 4772 hdr->ioptMax = 0; 4773 hdr->cbOptOffset = 0; 4774 4775 /* Swap out the auxiliary type information. */ 4776 hdr->cbAuxOffset = offset; 4777 offset = ecoff_build_aux (backend, &buf, &bufend, offset); 4778 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext); 4779 4780 /* Copy out the local strings. */ 4781 hdr->cbSsOffset = offset; 4782 offset = ecoff_build_ss (backend, &buf, &bufend, offset); 4783 hdr->issMax = offset - hdr->cbSsOffset; 4784 4785 /* We don't use relative file descriptors. */ 4786 hdr->crfd = 0; 4787 hdr->cbRfdOffset = 0; 4788 4789 /* Swap out the file descriptors. */ 4790 hdr->cbFdOffset = offset; 4791 offset = ecoff_build_fdr (backend, &buf, &bufend, offset); 4792 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size; 4793 4794 /* Set up the external symbols, which are handled by the BFD back 4795 end. */ 4796 hdr->issExtMax = 0; 4797 hdr->cbSsExtOffset = 0; 4798 hdr->iextMax = 0; 4799 hdr->cbExtOffset = 0; 4800 ecoff_setup_ext (); 4801 4802 know ((offset & (backend->debug_align - 1)) == 0); 4803 4804 /* FIXME: This value should be determined from the .verstamp directive, 4805 with reasonable defaults in config files. */ 4806 #ifdef TC_ALPHA 4807 hdr->vstamp = 0x030b; 4808 #else 4809 hdr->vstamp = 0x020b; 4810 #endif 4811 4812 *bufp = buf; 4813 return offset; 4814 } 4815 4816 /* Allocate a cluster of pages. */ 4818 4819 #ifndef MALLOC_CHECK 4820 4821 static page_type * 4822 allocate_cluster (unsigned long npages) 4823 { 4824 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE); 4825 4826 #ifdef ECOFF_DEBUG 4827 if (debug > 3) 4828 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value); 4829 #endif 4830 4831 memset (value, 0, npages * PAGE_USIZE); 4832 4833 return value; 4834 } 4835 4836 static page_type *cluster_ptr = NULL; 4837 static unsigned long pages_left = 0; 4838 4839 #endif /* MALLOC_CHECK */ 4840 4841 /* Allocate one page (which is initialized to 0). */ 4842 4843 static page_type * 4844 allocate_page (void) 4845 { 4846 #ifndef MALLOC_CHECK 4847 4848 if (pages_left == 0) 4849 { 4850 pages_left = MAX_CLUSTER_PAGES; 4851 cluster_ptr = allocate_cluster (pages_left); 4852 } 4853 4854 pages_left--; 4855 return cluster_ptr++; 4856 4857 #else /* MALLOC_CHECK */ 4858 4859 page_type *ptr; 4860 4861 ptr = xmalloc (PAGE_USIZE); 4862 memset (ptr, 0, PAGE_USIZE); 4863 return ptr; 4864 4865 #endif /* MALLOC_CHECK */ 4866 } 4867 4868 /* Allocate scoping information. */ 4870 4871 static scope_t * 4872 allocate_scope (void) 4873 { 4874 scope_t *ptr; 4875 static scope_t initial_scope; 4876 4877 #ifndef MALLOC_CHECK 4878 4879 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4880 if (ptr != (scope_t *) NULL) 4881 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free; 4882 else 4883 { 4884 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated; 4885 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page; 4886 4887 if (unallocated == 0) 4888 { 4889 unallocated = PAGE_SIZE / sizeof (scope_t); 4890 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page (); 4891 alloc_counts[(int) alloc_type_scope].total_pages++; 4892 } 4893 4894 ptr = &cur_page->scope[--unallocated]; 4895 alloc_counts[(int) alloc_type_scope].unallocated = unallocated; 4896 } 4897 4898 #else 4899 4900 ptr = (scope_t *) xmalloc (sizeof (scope_t)); 4901 4902 #endif 4903 4904 alloc_counts[(int) alloc_type_scope].total_alloc++; 4905 *ptr = initial_scope; 4906 return ptr; 4907 } 4908 4909 /* Free scoping information. */ 4910 4911 static void 4912 free_scope (scope_t *ptr) 4913 { 4914 alloc_counts[(int) alloc_type_scope].total_free++; 4915 4916 #ifndef MALLOC_CHECK 4917 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4918 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr; 4919 #else 4920 free ((void *) ptr); 4921 #endif 4922 } 4923 4924 /* Allocate links for pages in a virtual array. */ 4926 4927 static vlinks_t * 4928 allocate_vlinks (void) 4929 { 4930 vlinks_t *ptr; 4931 static vlinks_t initial_vlinks; 4932 4933 #ifndef MALLOC_CHECK 4934 4935 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated; 4936 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page; 4937 4938 if (unallocated == 0) 4939 { 4940 unallocated = PAGE_SIZE / sizeof (vlinks_t); 4941 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page (); 4942 alloc_counts[(int) alloc_type_vlinks].total_pages++; 4943 } 4944 4945 ptr = &cur_page->vlinks[--unallocated]; 4946 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated; 4947 4948 #else 4949 4950 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t)); 4951 4952 #endif 4953 4954 alloc_counts[(int) alloc_type_vlinks].total_alloc++; 4955 *ptr = initial_vlinks; 4956 return ptr; 4957 } 4958 4959 /* Allocate string hash buckets. */ 4961 4962 static shash_t * 4963 allocate_shash (void) 4964 { 4965 shash_t *ptr; 4966 static shash_t initial_shash; 4967 4968 #ifndef MALLOC_CHECK 4969 4970 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated; 4971 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page; 4972 4973 if (unallocated == 0) 4974 { 4975 unallocated = PAGE_SIZE / sizeof (shash_t); 4976 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page (); 4977 alloc_counts[(int) alloc_type_shash].total_pages++; 4978 } 4979 4980 ptr = &cur_page->shash[--unallocated]; 4981 alloc_counts[(int) alloc_type_shash].unallocated = unallocated; 4982 4983 #else 4984 4985 ptr = (shash_t *) xmalloc (sizeof (shash_t)); 4986 4987 #endif 4988 4989 alloc_counts[(int) alloc_type_shash].total_alloc++; 4990 *ptr = initial_shash; 4991 return ptr; 4992 } 4993 4994 /* Allocate type hash buckets. */ 4996 4997 static thash_t * 4998 allocate_thash (void) 4999 { 5000 thash_t *ptr; 5001 static thash_t initial_thash; 5002 5003 #ifndef MALLOC_CHECK 5004 5005 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated; 5006 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page; 5007 5008 if (unallocated == 0) 5009 { 5010 unallocated = PAGE_SIZE / sizeof (thash_t); 5011 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page (); 5012 alloc_counts[(int) alloc_type_thash].total_pages++; 5013 } 5014 5015 ptr = &cur_page->thash[--unallocated]; 5016 alloc_counts[(int) alloc_type_thash].unallocated = unallocated; 5017 5018 #else 5019 5020 ptr = (thash_t *) xmalloc (sizeof (thash_t)); 5021 5022 #endif 5023 5024 alloc_counts[(int) alloc_type_thash].total_alloc++; 5025 *ptr = initial_thash; 5026 return ptr; 5027 } 5028 5029 /* Allocate structure, union, or enum tag information. */ 5031 5032 static tag_t * 5033 allocate_tag (void) 5034 { 5035 tag_t *ptr; 5036 static tag_t initial_tag; 5037 5038 #ifndef MALLOC_CHECK 5039 5040 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5041 if (ptr != (tag_t *) NULL) 5042 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free; 5043 else 5044 { 5045 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated; 5046 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page; 5047 5048 if (unallocated == 0) 5049 { 5050 unallocated = PAGE_SIZE / sizeof (tag_t); 5051 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page (); 5052 alloc_counts[(int) alloc_type_tag].total_pages++; 5053 } 5054 5055 ptr = &cur_page->tag[--unallocated]; 5056 alloc_counts[(int) alloc_type_tag].unallocated = unallocated; 5057 } 5058 5059 #else 5060 5061 ptr = (tag_t *) xmalloc (sizeof (tag_t)); 5062 5063 #endif 5064 5065 alloc_counts[(int) alloc_type_tag].total_alloc++; 5066 *ptr = initial_tag; 5067 return ptr; 5068 } 5069 5070 /* Free scoping information. */ 5071 5072 static void 5073 free_tag (tag_t *ptr) 5074 { 5075 alloc_counts[(int) alloc_type_tag].total_free++; 5076 5077 #ifndef MALLOC_CHECK 5078 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5079 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr; 5080 #else 5081 free ((PTR_T) ptr); 5082 #endif 5083 } 5084 5085 /* Allocate forward reference to a yet unknown tag. */ 5087 5088 static forward_t * 5089 allocate_forward (void) 5090 { 5091 forward_t *ptr; 5092 static forward_t initial_forward; 5093 5094 #ifndef MALLOC_CHECK 5095 5096 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated; 5097 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page; 5098 5099 if (unallocated == 0) 5100 { 5101 unallocated = PAGE_SIZE / sizeof (forward_t); 5102 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page (); 5103 alloc_counts[(int) alloc_type_forward].total_pages++; 5104 } 5105 5106 ptr = &cur_page->forward[--unallocated]; 5107 alloc_counts[(int) alloc_type_forward].unallocated = unallocated; 5108 5109 #else 5110 5111 ptr = (forward_t *) xmalloc (sizeof (forward_t)); 5112 5113 #endif 5114 5115 alloc_counts[(int) alloc_type_forward].total_alloc++; 5116 *ptr = initial_forward; 5117 return ptr; 5118 } 5119 5120 /* Allocate head of type hash list. */ 5122 5123 static thead_t * 5124 allocate_thead (void) 5125 { 5126 thead_t *ptr; 5127 static thead_t initial_thead; 5128 5129 #ifndef MALLOC_CHECK 5130 5131 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5132 if (ptr != (thead_t *) NULL) 5133 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free; 5134 else 5135 { 5136 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated; 5137 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page; 5138 5139 if (unallocated == 0) 5140 { 5141 unallocated = PAGE_SIZE / sizeof (thead_t); 5142 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page (); 5143 alloc_counts[(int) alloc_type_thead].total_pages++; 5144 } 5145 5146 ptr = &cur_page->thead[--unallocated]; 5147 alloc_counts[(int) alloc_type_thead].unallocated = unallocated; 5148 } 5149 5150 #else 5151 5152 ptr = (thead_t *) xmalloc (sizeof (thead_t)); 5153 5154 #endif 5155 5156 alloc_counts[(int) alloc_type_thead].total_alloc++; 5157 *ptr = initial_thead; 5158 return ptr; 5159 } 5160 5161 /* Free scoping information. */ 5162 5163 static void 5164 free_thead (thead_t *ptr) 5165 { 5166 alloc_counts[(int) alloc_type_thead].total_free++; 5167 5168 #ifndef MALLOC_CHECK 5169 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5170 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr; 5171 #else 5172 free ((PTR_T) ptr); 5173 #endif 5174 } 5175 5176 static lineno_list_t * 5178 allocate_lineno_list (void) 5179 { 5180 lineno_list_t *ptr; 5181 static lineno_list_t initial_lineno_list; 5182 5183 #ifndef MALLOC_CHECK 5184 5185 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated; 5186 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page; 5187 5188 if (unallocated == 0) 5189 { 5190 unallocated = PAGE_SIZE / sizeof (lineno_list_t); 5191 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page (); 5192 alloc_counts[(int) alloc_type_lineno].total_pages++; 5193 } 5194 5195 ptr = &cur_page->lineno[--unallocated]; 5196 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated; 5197 5198 #else 5199 5200 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t)); 5201 5202 #endif 5203 5204 alloc_counts[(int) alloc_type_lineno].total_alloc++; 5205 *ptr = initial_lineno_list; 5206 return ptr; 5207 } 5208 5209 void 5210 ecoff_set_gp_prolog_size (int sz) 5211 { 5212 if (cur_proc_ptr == 0) 5213 return; 5214 5215 cur_proc_ptr->pdr.gp_prologue = sz; 5216 if (cur_proc_ptr->pdr.gp_prologue != sz) 5217 { 5218 as_warn (_("GP prologue size exceeds field size, using 0 instead")); 5219 cur_proc_ptr->pdr.gp_prologue = 0; 5220 } 5221 5222 cur_proc_ptr->pdr.gp_used = 1; 5223 } 5224 5225 int 5226 ecoff_no_current_file (void) 5227 { 5228 return cur_file_ptr == (efdr_t *) NULL; 5229 } 5230 5231 void 5232 ecoff_generate_asm_lineno (void) 5233 { 5234 unsigned int lineno; 5235 char *filename; 5236 lineno_list_t *list; 5237 5238 as_where (&filename, &lineno); 5239 5240 if (current_stabs_filename == (char *) NULL 5241 || filename_cmp (current_stabs_filename, filename)) 5242 add_file (filename, 0, 1); 5243 5244 list = allocate_lineno_list (); 5245 5246 list->next = (lineno_list_t *) NULL; 5247 list->file = cur_file_ptr; 5248 list->proc = cur_proc_ptr; 5249 list->frag = frag_now; 5250 list->paddr = frag_now_fix (); 5251 list->lineno = lineno; 5252 5253 /* We don't want to merge files which have line numbers. */ 5254 cur_file_ptr->fdr.fMerge = 0; 5255 5256 /* A .loc directive will sometimes appear before a .ent directive, 5257 which means that cur_proc_ptr will be NULL here. Arrange to 5258 patch this up. */ 5259 if (cur_proc_ptr == (proc_t *) NULL) 5260 { 5261 lineno_list_t **pl; 5262 5263 pl = &noproc_lineno; 5264 while (*pl != (lineno_list_t *) NULL) 5265 pl = &(*pl)->next; 5266 *pl = list; 5267 } 5268 else 5269 { 5270 last_lineno = list; 5271 *last_lineno_ptr = list; 5272 last_lineno_ptr = &list->next; 5273 } 5274 } 5275 5276 #else 5277 5278 void 5279 ecoff_generate_asm_lineno (void) 5280 { 5281 } 5282 5283 #endif /* ECOFF_DEBUGGING */ 5284
