1/* ECOFF debugging support. 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004, 2005, 2006 4 Free Software Foundation, Inc. 5 Contributed by Cygnus Support. 6 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A 7 good deal of it comes directly from mips-tfile.c, by Michael 8 Meissner <meissner@osf.org>. 9 10 This file is part of GAS. 11 12 GAS is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 2, or (at your option) 15 any later version. 16 17 GAS is distributed in the hope that it will be useful, 18 but WITHOUT ANY WARRANTY; without even the implied warranty of 19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 GNU General Public License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with GAS; see the file COPYING. If not, write to the Free 24 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 25 02110-1301, USA. */ 26 27#include "as.h" 28 29/* This file is compiled conditionally for those targets which use 30 ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha 31 ECOFF). */ 32 33#include "ecoff.h" 34 35#ifdef ECOFF_DEBUGGING 36 37#include "coff/internal.h" 38#include "coff/symconst.h" 39#include "aout/stab_gnu.h" 40 41#include "safe-ctype.h" 42 43/* Why isn't this in coff/sym.h? */ 44#define ST_RFDESCAPE 0xfff 45 46/* This file constructs the information used by the ECOFF debugging 47 format. It just builds a large block of data. 48 49 We support both ECOFF style debugging and stabs debugging (the 50 stabs symbols are encapsulated in ECOFF symbols). This should let 51 us handle anything the compiler might throw at us. */ 52 53/* Here is a brief description of the MIPS ECOFF symbol table, by 54 Michael Meissner. The MIPS symbol table has the following pieces: 55 56 Symbolic Header 57 | 58 +-- Auxiliary Symbols 59 | 60 +-- Dense number table 61 | 62 +-- Optimizer Symbols 63 | 64 +-- External Strings 65 | 66 +-- External Symbols 67 | 68 +-- Relative file descriptors 69 | 70 +-- File table 71 | 72 +-- Procedure table 73 | 74 +-- Line number table 75 | 76 +-- Local Strings 77 | 78 +-- Local Symbols 79 80 The symbolic header points to each of the other tables, and also 81 contains the number of entries. It also contains a magic number 82 and MIPS compiler version number, such as 2.0. 83 84 The auxiliary table is a series of 32 bit integers, that are 85 referenced as needed from the local symbol table. Unlike standard 86 COFF, the aux. information does not follow the symbol that uses 87 it, but rather is a separate table. In theory, this would allow 88 the MIPS compilers to collapse duplicate aux. entries, but I've not 89 noticed this happening with the 1.31 compiler suite. The different 90 types of aux. entries are: 91 92 1) dnLow: Low bound on array dimension. 93 94 2) dnHigh: High bound on array dimension. 95 96 3) isym: Index to the local symbol which is the start of the 97 function for the end of function first aux. entry. 98 99 4) width: Width of structures and bitfields. 100 101 5) count: Count of ranges for variant part. 102 103 6) rndx: A relative index into the symbol table. The relative 104 index field has two parts: rfd which is a pointer into the 105 relative file index table or ST_RFDESCAPE which says the next 106 aux. entry is the file number, and index: which is the pointer 107 into the local symbol within a given file table. This is for 108 things like references to types defined in another file. 109 110 7) Type information: This is like the COFF type bits, except it 111 is 32 bits instead of 16; they still have room to add new 112 basic types; and they can handle more than 6 levels of array, 113 pointer, function, etc. Each type information field contains 114 the following structure members: 115 116 a) fBitfield: a bit that says this is a bitfield, and the 117 size in bits follows as the next aux. entry. 118 119 b) continued: a bit that says the next aux. entry is a 120 continuation of the current type information (in case 121 there are more than 6 levels of array/ptr/function). 122 123 c) bt: an integer containing the base type before adding 124 array, pointer, function, etc. qualifiers. The 125 current base types that I have documentation for are: 126 127 btNil -- undefined 128 btAdr -- address - integer same size as ptr 129 btChar -- character 130 btUChar -- unsigned character 131 btShort -- short 132 btUShort -- unsigned short 133 btInt -- int 134 btUInt -- unsigned int 135 btLong -- long 136 btULong -- unsigned long 137 btFloat -- float (real) 138 btDouble -- Double (real) 139 btStruct -- Structure (Record) 140 btUnion -- Union (variant) 141 btEnum -- Enumerated 142 btTypedef -- defined via a typedef isymRef 143 btRange -- subrange of int 144 btSet -- pascal sets 145 btComplex -- fortran complex 146 btDComplex -- fortran double complex 147 btIndirect -- forward or unnamed typedef 148 btFixedDec -- Fixed Decimal 149 btFloatDec -- Float Decimal 150 btString -- Varying Length Character String 151 btBit -- Aligned Bit String 152 btPicture -- Picture 153 btVoid -- Void (MIPS cc revision >= 2.00) 154 155 d) tq0 - tq5: type qualifier fields as needed. The 156 current type qualifier fields I have documentation for 157 are: 158 159 tqNil -- no more qualifiers 160 tqPtr -- pointer 161 tqProc -- procedure 162 tqArray -- array 163 tqFar -- 8086 far pointers 164 tqVol -- volatile 165 166 The dense number table is used in the front ends, and disappears by 167 the time the .o is created. 168 169 With the 1.31 compiler suite, the optimization symbols don't seem 170 to be used as far as I can tell. 171 172 The linker is the first entity that creates the relative file 173 descriptor table, and I believe it is used so that the individual 174 file table pointers don't have to be rewritten when the objects are 175 merged together into the program file. 176 177 Unlike COFF, the basic symbol & string tables are split into 178 external and local symbols/strings. The relocation information 179 only goes off of the external symbol table, and the debug 180 information only goes off of the internal symbol table. The 181 external symbols can have links to an appropriate file index and 182 symbol within the file to give it the appropriate type information. 183 Because of this, the external symbols are actually larger than the 184 internal symbols (to contain the link information), and contain the 185 local symbol structure as a member, though this member is not the 186 first member of the external symbol structure (!). I suspect this 187 split is to make strip easier to deal with. 188 189 Each file table has offsets for where the line numbers, local 190 strings, local symbols, and procedure table starts from within the 191 global tables, and the indexs are reset to 0 for each of those 192 tables for the file. 193 194 The procedure table contains the binary equivalents of the .ent 195 (start of the function address), .frame (what register is the 196 virtual frame pointer, constant offset from the register to obtain 197 the VFP, and what register holds the return address), .mask/.fmask 198 (bitmask of saved registers, and where the first register is stored 199 relative to the VFP) assembler directives. It also contains the 200 low and high bounds of the line numbers if debugging is turned on. 201 202 The line number table is a compressed form of the normal COFF line 203 table. Each line number entry is either 1 or 3 bytes long, and 204 contains a signed delta from the previous line, and an unsigned 205 count of the number of instructions this statement takes. 206 207 The local symbol table contains the following fields: 208 209 1) iss: index to the local string table giving the name of the 210 symbol. 211 212 2) value: value of the symbol (address, register number, etc.). 213 214 3) st: symbol type. The current symbol types are: 215 216 stNil -- Nuthin' special 217 stGlobal -- external symbol 218 stStatic -- static 219 stParam -- procedure argument 220 stLocal -- local variable 221 stLabel -- label 222 stProc -- External Procedure 223 stBlock -- beginning of block 224 stEnd -- end (of anything) 225 stMember -- member (of anything) 226 stTypedef -- type definition 227 stFile -- file name 228 stRegReloc -- register relocation 229 stForward -- forwarding address 230 stStaticProc -- Static procedure 231 stConstant -- const 232 233 4) sc: storage class. The current storage classes are: 234 235 scText -- text symbol 236 scData -- initialized data symbol 237 scBss -- un-initialized data symbol 238 scRegister -- value of symbol is register number 239 scAbs -- value of symbol is absolute 240 scUndefined -- who knows? 241 scCdbLocal -- variable's value is IN se->va.?? 242 scBits -- this is a bit field 243 scCdbSystem -- value is IN debugger's address space 244 scRegImage -- register value saved on stack 245 scInfo -- symbol contains debugger information 246 scUserStruct -- addr in struct user for current process 247 scSData -- load time only small data 248 scSBss -- load time only small common 249 scRData -- load time only read only data 250 scVar -- Var parameter (fortranpascal) 251 scCommon -- common variable 252 scSCommon -- small common 253 scVarRegister -- Var parameter in a register 254 scVariant -- Variant record 255 scSUndefined -- small undefined(external) data 256 scInit -- .init section symbol 257 258 5) index: pointer to a local symbol or aux. entry. 259 260 For the following program: 261 262 #include <stdio.h> 263 264 main(){ 265 printf("Hello World!\n"); 266 return 0; 267 } 268 269 Mips-tdump produces the following information: 270 271 Global file header: 272 magic number 0x162 273 # sections 2 274 timestamp 645311799, Wed Jun 13 17:16:39 1990 275 symbolic header offset 284 276 symbolic header size 96 277 optional header 56 278 flags 0x0 279 280 Symbolic header, magic number = 0x7009, vstamp = 1.31: 281 282 Info Offset Number Bytes 283 ==== ====== ====== ===== 284 285 Line numbers 380 4 4 [13] 286 Dense numbers 0 0 0 287 Procedures Tables 384 1 52 288 Local Symbols 436 16 192 289 Optimization Symbols 0 0 0 290 Auxiliary Symbols 628 39 156 291 Local Strings 784 80 80 292 External Strings 864 144 144 293 File Tables 1008 2 144 294 Relative Files 0 0 0 295 External Symbols 1152 20 320 296 297 File #0, "hello2.c" 298 299 Name index = 1 Readin = No 300 Merge = No Endian = LITTLE 301 Debug level = G2 Language = C 302 Adr = 0x00000000 303 304 Info Start Number Size Offset 305 ==== ===== ====== ==== ====== 306 Local strings 0 15 15 784 307 Local symbols 0 6 72 436 308 Line numbers 0 13 13 380 309 Optimization symbols 0 0 0 0 310 Procedures 0 1 52 384 311 Auxiliary symbols 0 14 56 628 312 Relative Files 0 0 0 0 313 314 There are 6 local symbols, starting at 436 315 316 Symbol# 0: "hello2.c" 317 End+1 symbol = 6 318 String index = 1 319 Storage class = Text Index = 6 320 Symbol type = File Value = 0 321 322 Symbol# 1: "main" 323 End+1 symbol = 5 324 Type = int 325 String index = 10 326 Storage class = Text Index = 12 327 Symbol type = Proc Value = 0 328 329 Symbol# 2: "" 330 End+1 symbol = 4 331 String index = 0 332 Storage class = Text Index = 4 333 Symbol type = Block Value = 8 334 335 Symbol# 3: "" 336 First symbol = 2 337 String index = 0 338 Storage class = Text Index = 2 339 Symbol type = End Value = 28 340 341 Symbol# 4: "main" 342 First symbol = 1 343 String index = 10 344 Storage class = Text Index = 1 345 Symbol type = End Value = 52 346 347 Symbol# 5: "hello2.c" 348 First symbol = 0 349 String index = 1 350 Storage class = Text Index = 0 351 Symbol type = End Value = 0 352 353 There are 14 auxiliary table entries, starting at 628. 354 355 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 356 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 357 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0] 358 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0] 359 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 360 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0] 361 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0] 362 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0] 363 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0] 364 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0] 365 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0] 366 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0] 367 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0] 368 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 369 370 There are 1 procedure descriptor entries, starting at 0. 371 372 Procedure descriptor 0: 373 Name index = 10 Name = "main" 374 .mask 0x80000000,-4 .fmask 0x00000000,0 375 .frame $29,24,$31 376 Opt. start = -1 Symbols start = 1 377 First line # = 3 Last line # = 6 378 Line Offset = 0 Address = 0x00000000 379 380 There are 4 bytes holding line numbers, starting at 380. 381 Line 3, delta 0, count 2 382 Line 4, delta 1, count 3 383 Line 5, delta 1, count 2 384 Line 6, delta 1, count 6 385 386 File #1, "/usr/include/stdio.h" 387 388 Name index = 1 Readin = No 389 Merge = Yes Endian = LITTLE 390 Debug level = G2 Language = C 391 Adr = 0x00000000 392 393 Info Start Number Size Offset 394 ==== ===== ====== ==== ====== 395 Local strings 15 65 65 799 396 Local symbols 6 10 120 508 397 Line numbers 0 0 0 380 398 Optimization symbols 0 0 0 0 399 Procedures 1 0 0 436 400 Auxiliary symbols 14 25 100 684 401 Relative Files 0 0 0 0 402 403 There are 10 local symbols, starting at 442 404 405 Symbol# 0: "/usr/include/stdio.h" 406 End+1 symbol = 10 407 String index = 1 408 Storage class = Text Index = 10 409 Symbol type = File Value = 0 410 411 Symbol# 1: "_iobuf" 412 End+1 symbol = 9 413 String index = 22 414 Storage class = Info Index = 9 415 Symbol type = Block Value = 20 416 417 Symbol# 2: "_cnt" 418 Type = int 419 String index = 29 420 Storage class = Info Index = 4 421 Symbol type = Member Value = 0 422 423 Symbol# 3: "_ptr" 424 Type = ptr to char 425 String index = 34 426 Storage class = Info Index = 15 427 Symbol type = Member Value = 32 428 429 Symbol# 4: "_base" 430 Type = ptr to char 431 String index = 39 432 Storage class = Info Index = 16 433 Symbol type = Member Value = 64 434 435 Symbol# 5: "_bufsiz" 436 Type = int 437 String index = 45 438 Storage class = Info Index = 4 439 Symbol type = Member Value = 96 440 441 Symbol# 6: "_flag" 442 Type = short 443 String index = 53 444 Storage class = Info Index = 3 445 Symbol type = Member Value = 128 446 447 Symbol# 7: "_file" 448 Type = char 449 String index = 59 450 Storage class = Info Index = 2 451 Symbol type = Member Value = 144 452 453 Symbol# 8: "" 454 First symbol = 1 455 String index = 0 456 Storage class = Info Index = 1 457 Symbol type = End Value = 0 458 459 Symbol# 9: "/usr/include/stdio.h" 460 First symbol = 0 461 String index = 1 462 Storage class = Text Index = 0 463 Symbol type = End Value = 0 464 465 There are 25 auxiliary table entries, starting at 642. 466 467 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f] 468 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] 469 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] 470 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0] 471 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1] 472 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] 473 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4] 474 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] 475 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 476 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0] 477 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0] 478 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 479 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 480 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 481 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 482 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 483 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 484 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 485 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 486 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 487 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 488 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 489 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 490 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 491 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 492 493 There are 0 procedure descriptor entries, starting at 1. 494 495 There are 20 external symbols, starting at 1152 496 497 Symbol# 0: "_iob" 498 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 } 499 String index = 0 Ifd = 1 500 Storage class = Nil Index = 17 501 Symbol type = Global Value = 60 502 503 Symbol# 1: "fopen" 504 String index = 5 Ifd = 1 505 Storage class = Nil Index = 1048575 506 Symbol type = Proc Value = 0 507 508 Symbol# 2: "fdopen" 509 String index = 11 Ifd = 1 510 Storage class = Nil Index = 1048575 511 Symbol type = Proc Value = 0 512 513 Symbol# 3: "freopen" 514 String index = 18 Ifd = 1 515 Storage class = Nil Index = 1048575 516 Symbol type = Proc Value = 0 517 518 Symbol# 4: "popen" 519 String index = 26 Ifd = 1 520 Storage class = Nil Index = 1048575 521 Symbol type = Proc Value = 0 522 523 Symbol# 5: "tmpfile" 524 String index = 32 Ifd = 1 525 Storage class = Nil Index = 1048575 526 Symbol type = Proc Value = 0 527 528 Symbol# 6: "ftell" 529 String index = 40 Ifd = 1 530 Storage class = Nil Index = 1048575 531 Symbol type = Proc Value = 0 532 533 Symbol# 7: "rewind" 534 String index = 46 Ifd = 1 535 Storage class = Nil Index = 1048575 536 Symbol type = Proc Value = 0 537 538 Symbol# 8: "setbuf" 539 String index = 53 Ifd = 1 540 Storage class = Nil Index = 1048575 541 Symbol type = Proc Value = 0 542 543 Symbol# 9: "setbuffer" 544 String index = 60 Ifd = 1 545 Storage class = Nil Index = 1048575 546 Symbol type = Proc Value = 0 547 548 Symbol# 10: "setlinebuf" 549 String index = 70 Ifd = 1 550 Storage class = Nil Index = 1048575 551 Symbol type = Proc Value = 0 552 553 Symbol# 11: "fgets" 554 String index = 81 Ifd = 1 555 Storage class = Nil Index = 1048575 556 Symbol type = Proc Value = 0 557 558 Symbol# 12: "gets" 559 String index = 87 Ifd = 1 560 Storage class = Nil Index = 1048575 561 Symbol type = Proc Value = 0 562 563 Symbol# 13: "ctermid" 564 String index = 92 Ifd = 1 565 Storage class = Nil Index = 1048575 566 Symbol type = Proc Value = 0 567 568 Symbol# 14: "cuserid" 569 String index = 100 Ifd = 1 570 Storage class = Nil Index = 1048575 571 Symbol type = Proc Value = 0 572 573 Symbol# 15: "tempnam" 574 String index = 108 Ifd = 1 575 Storage class = Nil Index = 1048575 576 Symbol type = Proc Value = 0 577 578 Symbol# 16: "tmpnam" 579 String index = 116 Ifd = 1 580 Storage class = Nil Index = 1048575 581 Symbol type = Proc Value = 0 582 583 Symbol# 17: "sprintf" 584 String index = 123 Ifd = 1 585 Storage class = Nil Index = 1048575 586 Symbol type = Proc Value = 0 587 588 Symbol# 18: "main" 589 Type = int 590 String index = 131 Ifd = 0 591 Storage class = Text Index = 1 592 Symbol type = Proc Value = 0 593 594 Symbol# 19: "printf" 595 String index = 136 Ifd = 0 596 Storage class = Undefined Index = 1048575 597 Symbol type = Proc Value = 0 598 599 The following auxiliary table entries were unused: 600 601 #0 0 0x00000000 void 602 #2 8 0x00000008 char 603 #3 16 0x00000010 short 604 #4 24 0x00000018 int 605 #5 32 0x00000020 long 606 #6 40 0x00000028 float 607 #7 44 0x0000002c double 608 #8 12 0x0000000c unsigned char 609 #9 20 0x00000014 unsigned short 610 #10 28 0x0000001c unsigned int 611 #11 36 0x00000024 unsigned long 612 #14 0 0x00000000 void 613 #15 24 0x00000018 int 614 #19 32 0x00000020 long 615 #20 40 0x00000028 float 616 #21 44 0x0000002c double 617 #22 12 0x0000000c unsigned char 618 #23 20 0x00000014 unsigned short 619 #24 28 0x0000001c unsigned int 620 #25 36 0x00000024 unsigned long 621 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 } 622*/ 623 624/* Redefinition of of storage classes as an enumeration for better 625 debugging. */ 626 627typedef enum sc { 628 sc_Nil = scNil, /* no storage class */ 629 sc_Text = scText, /* text symbol */ 630 sc_Data = scData, /* initialized data symbol */ 631 sc_Bss = scBss, /* un-initialized data symbol */ 632 sc_Register = scRegister, /* value of symbol is register number */ 633 sc_Abs = scAbs, /* value of symbol is absolute */ 634 sc_Undefined = scUndefined, /* who knows? */ 635 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */ 636 sc_Bits = scBits, /* this is a bit field */ 637 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */ 638 sc_RegImage = scRegImage, /* register value saved on stack */ 639 sc_Info = scInfo, /* symbol contains debugger information */ 640 sc_UserStruct = scUserStruct, /* addr in struct user for current process */ 641 sc_SData = scSData, /* load time only small data */ 642 sc_SBss = scSBss, /* load time only small common */ 643 sc_RData = scRData, /* load time only read only data */ 644 sc_Var = scVar, /* Var parameter (fortran,pascal) */ 645 sc_Common = scCommon, /* common variable */ 646 sc_SCommon = scSCommon, /* small common */ 647 sc_VarRegister = scVarRegister, /* Var parameter in a register */ 648 sc_Variant = scVariant, /* Variant record */ 649 sc_SUndefined = scSUndefined, /* small undefined(external) data */ 650 sc_Init = scInit, /* .init section symbol */ 651 sc_Max = scMax /* Max storage class+1 */ 652} sc_t; 653 654/* Redefinition of symbol type. */ 655 656typedef enum st { 657 st_Nil = stNil, /* Nuthin' special */ 658 st_Global = stGlobal, /* external symbol */ 659 st_Static = stStatic, /* static */ 660 st_Param = stParam, /* procedure argument */ 661 st_Local = stLocal, /* local variable */ 662 st_Label = stLabel, /* label */ 663 st_Proc = stProc, /* " " Procedure */ 664 st_Block = stBlock, /* beginning of block */ 665 st_End = stEnd, /* end (of anything) */ 666 st_Member = stMember, /* member (of anything - struct/union/enum */ 667 st_Typedef = stTypedef, /* type definition */ 668 st_File = stFile, /* file name */ 669 st_RegReloc = stRegReloc, /* register relocation */ 670 st_Forward = stForward, /* forwarding address */ 671 st_StaticProc = stStaticProc, /* load time only static procs */ 672 st_Constant = stConstant, /* const */ 673 st_Str = stStr, /* string */ 674 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */ 675 st_Expr = stExpr, /* 2+2 vs. 4 */ 676 st_Type = stType, /* post-coercion SER */ 677 st_Max = stMax /* max type+1 */ 678} st_t; 679 680/* Redefinition of type qualifiers. */ 681 682typedef enum tq { 683 tq_Nil = tqNil, /* bt is what you see */ 684 tq_Ptr = tqPtr, /* pointer */ 685 tq_Proc = tqProc, /* procedure */ 686 tq_Array = tqArray, /* duh */ 687 tq_Far = tqFar, /* longer addressing - 8086/8 land */ 688 tq_Vol = tqVol, /* volatile */ 689 tq_Max = tqMax /* Max type qualifier+1 */ 690} tq_t; 691 692/* Redefinition of basic types. */ 693 694typedef enum bt { 695 bt_Nil = btNil, /* undefined */ 696 bt_Adr = btAdr, /* address - integer same size as pointer */ 697 bt_Char = btChar, /* character */ 698 bt_UChar = btUChar, /* unsigned character */ 699 bt_Short = btShort, /* short */ 700 bt_UShort = btUShort, /* unsigned short */ 701 bt_Int = btInt, /* int */ 702 bt_UInt = btUInt, /* unsigned int */ 703 bt_Long = btLong, /* long */ 704 bt_ULong = btULong, /* unsigned long */ 705 bt_Float = btFloat, /* float (real) */ 706 bt_Double = btDouble, /* Double (real) */ 707 bt_Struct = btStruct, /* Structure (Record) */ 708 bt_Union = btUnion, /* Union (variant) */ 709 bt_Enum = btEnum, /* Enumerated */ 710 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */ 711 bt_Range = btRange, /* subrange of int */ 712 bt_Set = btSet, /* pascal sets */ 713 bt_Complex = btComplex, /* fortran complex */ 714 bt_DComplex = btDComplex, /* fortran double complex */ 715 bt_Indirect = btIndirect, /* forward or unnamed typedef */ 716 bt_FixedDec = btFixedDec, /* Fixed Decimal */ 717 bt_FloatDec = btFloatDec, /* Float Decimal */ 718 bt_String = btString, /* Varying Length Character String */ 719 bt_Bit = btBit, /* Aligned Bit String */ 720 bt_Picture = btPicture, /* Picture */ 721 bt_Void = btVoid, /* Void */ 722 bt_Max = btMax /* Max basic type+1 */ 723} bt_t; 724 725#define N_TQ itqMax 726 727/* States for whether to hash type or not. */ 728typedef enum hash_state { 729 hash_no = 0, /* Don't hash type */ 730 hash_yes = 1, /* OK to hash type, or use previous hash */ 731 hash_record = 2 /* OK to record hash, but don't use prev. */ 732} hash_state_t; 733 734/* Types of different sized allocation requests. */ 735enum alloc_type { 736 alloc_type_none, /* dummy value */ 737 alloc_type_scope, /* nested scopes linked list */ 738 alloc_type_vlinks, /* glue linking pages in varray */ 739 alloc_type_shash, /* string hash element */ 740 alloc_type_thash, /* type hash element */ 741 alloc_type_tag, /* struct/union/tag element */ 742 alloc_type_forward, /* element to hold unknown tag */ 743 alloc_type_thead, /* head of type hash list */ 744 alloc_type_varray, /* general varray allocation */ 745 alloc_type_lineno, /* line number list */ 746 alloc_type_last /* last+1 element for array bounds */ 747}; 748 749/* Types of auxiliary type information. */ 750enum aux_type { 751 aux_tir, /* TIR type information */ 752 aux_rndx, /* relative index into symbol table */ 753 aux_dnLow, /* low dimension */ 754 aux_dnHigh, /* high dimension */ 755 aux_isym, /* symbol table index (end of proc) */ 756 aux_iss, /* index into string space (not used) */ 757 aux_width, /* width for non-default sized struc fields */ 758 aux_count /* count of ranges for variant arm */ 759}; 760 761/* Structures to provide n-number of virtual arrays, each of which can 762 grow linearly, and which are written in the object file as 763 sequential pages. On systems with a BSD malloc, the 764 MAX_CLUSTER_PAGES should be 1 less than a power of two, since 765 malloc adds it's overhead, and rounds up to the next power of 2. 766 Pages are linked together via a linked list. 767 768 If PAGE_SIZE is > 4096, the string length in the shash_t structure 769 can't be represented (assuming there are strings > 4096 bytes). */ 770 771/* FIXME: Yes, there can be such strings while emitting C++ class debug 772 info. Templates are the offender here, the test case in question 773 having a mangled class name of 774 775 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\ 776 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey 777 778 Repeat that a couple dozen times while listing the class members and 779 you've got strings over 4k. Hack around this for now by increasing 780 the page size. A proper solution would abandon this structure scheme 781 certainly for very large strings, and possibly entirely. */ 782 783#ifndef PAGE_SIZE 784#define PAGE_SIZE (8*1024) /* size of varray pages */ 785#endif 786 787#define PAGE_USIZE ((unsigned long) PAGE_SIZE) 788 789#ifndef MAX_CLUSTER_PAGES /* # pages to get from system */ 790#define MAX_CLUSTER_PAGES 63 791#endif 792 793/* Linked list connecting separate page allocations. */ 794typedef struct vlinks { 795 struct vlinks *prev; /* previous set of pages */ 796 struct vlinks *next; /* next set of pages */ 797 union page *datum; /* start of page */ 798 unsigned long start_index; /* starting index # of page */ 799} vlinks_t; 800 801/* Virtual array header. */ 802typedef struct varray { 803 vlinks_t *first; /* first page link */ 804 vlinks_t *last; /* last page link */ 805 unsigned long num_allocated; /* # objects allocated */ 806 unsigned short object_size; /* size in bytes of each object */ 807 unsigned short objects_per_page; /* # objects that can fit on a page */ 808 unsigned short objects_last_page; /* # objects allocated on last page */ 809} varray_t; 810 811#ifndef MALLOC_CHECK 812#define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type)) 813#else 814#define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE) 815#endif 816 817#define INIT_VARRAY(type) { /* macro to initialize a varray */ \ 818 (vlinks_t *)0, /* first */ \ 819 (vlinks_t *)0, /* last */ \ 820 0, /* num_allocated */ \ 821 sizeof (type), /* object_size */ \ 822 OBJECTS_PER_PAGE (type), /* objects_per_page */ \ 823 OBJECTS_PER_PAGE (type), /* objects_last_page */ \ 824} 825 826/* Master type for indexes within the symbol table. */ 827typedef unsigned long symint_t; 828 829/* Linked list support for nested scopes (file, block, structure, etc.). */ 830typedef struct scope { 831 struct scope *prev; /* previous scope level */ 832 struct scope *free; /* free list pointer */ 833 struct localsym *lsym; /* pointer to local symbol node */ 834 st_t type; /* type of the node */ 835} scope_t; 836 837/* For a local symbol we store a gas symbol as well as the debugging 838 information we generate. The gas symbol will be NULL if this is 839 only a debugging symbol. */ 840typedef struct localsym { 841 const char *name; /* symbol name */ 842 symbolS *as_sym; /* symbol as seen by gas */ 843 bfd_vma addend; /* addend to as_sym value */ 844 struct efdr *file_ptr; /* file pointer */ 845 struct ecoff_proc *proc_ptr; /* proc pointer */ 846 struct localsym *begin_ptr; /* symbol at start of block */ 847 struct ecoff_aux *index_ptr; /* index value to be filled in */ 848 struct forward *forward_ref; /* forward references to this symbol */ 849 long sym_index; /* final symbol index */ 850 EXTR ecoff_sym; /* ECOFF debugging symbol */ 851} localsym_t; 852 853/* For aux information we keep the type and the data. */ 854typedef struct ecoff_aux { 855 enum aux_type type; /* aux type */ 856 AUXU data; /* aux data */ 857} aux_t; 858 859/* For a procedure we store the gas symbol as well as the PDR 860 debugging information. */ 861typedef struct ecoff_proc { 862 localsym_t *sym; /* associated symbol */ 863 PDR pdr; /* ECOFF debugging info */ 864} proc_t; 865 866/* Number of proc_t structures allocated. */ 867static unsigned long proc_cnt; 868 869/* Forward reference list for tags referenced, but not yet defined. */ 870typedef struct forward { 871 struct forward *next; /* next forward reference */ 872 struct forward *free; /* free list pointer */ 873 aux_t *ifd_ptr; /* pointer to store file index */ 874 aux_t *index_ptr; /* pointer to store symbol index */ 875} forward_t; 876 877/* Linked list support for tags. The first tag in the list is always 878 the current tag for that block. */ 879typedef struct tag { 880 struct tag *free; /* free list pointer */ 881 struct shash *hash_ptr; /* pointer to the hash table head */ 882 struct tag *same_name; /* tag with same name in outer scope */ 883 struct tag *same_block; /* next tag defined in the same block. */ 884 struct forward *forward_ref; /* list of forward references */ 885 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */ 886 symint_t ifd; /* file # tag defined in */ 887 localsym_t *sym; /* file's local symbols */ 888} tag_t; 889 890/* Head of a block's linked list of tags. */ 891typedef struct thead { 892 struct thead *prev; /* previous block */ 893 struct thead *free; /* free list pointer */ 894 struct tag *first_tag; /* first tag in block defined */ 895} thead_t; 896 897/* Union containing pointers to each the small structures which are freed up. */ 898typedef union small_free { 899 scope_t *f_scope; /* scope structure */ 900 thead_t *f_thead; /* tag head structure */ 901 tag_t *f_tag; /* tag element structure */ 902 forward_t *f_forward; /* forward tag reference */ 903} small_free_t; 904 905/* String hash table entry. */ 906 907typedef struct shash { 908 char *string; /* string we are hashing */ 909 symint_t indx; /* index within string table */ 910 EXTR *esym_ptr; /* global symbol pointer */ 911 localsym_t *sym_ptr; /* local symbol pointer */ 912 localsym_t *end_ptr; /* symbol pointer to end block */ 913 tag_t *tag_ptr; /* tag pointer */ 914 proc_t *proc_ptr; /* procedure descriptor pointer */ 915} shash_t; 916 917/* Type hash table support. The size of the hash table must fit 918 within a page with the other extended file descriptor information. 919 Because unique types which are hashed are fewer in number than 920 strings, we use a smaller hash value. */ 921 922#define HASHBITS 30 923 924#ifndef THASH_SIZE 925#define THASH_SIZE 113 926#endif 927 928typedef struct thash { 929 struct thash *next; /* next hash value */ 930 AUXU type; /* type we are hashing */ 931 symint_t indx; /* index within string table */ 932} thash_t; 933 934/* Extended file descriptor that contains all of the support necessary 935 to add things to each file separately. */ 936typedef struct efdr { 937 FDR fdr; /* File header to be written out */ 938 FDR *orig_fdr; /* original file header */ 939 char *name; /* filename */ 940 int fake; /* whether this is faked .file */ 941 symint_t void_type; /* aux. pointer to 'void' type */ 942 symint_t int_type; /* aux. pointer to 'int' type */ 943 scope_t *cur_scope; /* current nested scopes */ 944 symint_t file_index; /* current file number */ 945 int nested_scopes; /* # nested scopes */ 946 varray_t strings; /* local strings */ 947 varray_t symbols; /* local symbols */ 948 varray_t procs; /* procedures */ 949 varray_t aux_syms; /* auxiliary symbols */ 950 struct efdr *next_file; /* next file descriptor */ 951 /* string/type hash tables */ 952 struct hash_control *str_hash; /* string hash table */ 953 thash_t *thash_head[THASH_SIZE]; 954} efdr_t; 955 956/* Pre-initialized extended file structure. */ 957static const efdr_t init_file = { 958 { /* FDR structure */ 959 0, /* adr: memory address of beginning of file */ 960 0, /* rss: file name (of source, if known) */ 961 0, /* issBase: file's string space */ 962 0, /* cbSs: number of bytes in the ss */ 963 0, /* isymBase: beginning of symbols */ 964 0, /* csym: count file's of symbols */ 965 0, /* ilineBase: file's line symbols */ 966 0, /* cline: count of file's line symbols */ 967 0, /* ioptBase: file's optimization entries */ 968 0, /* copt: count of file's optimization entries */ 969 0, /* ipdFirst: start of procedures for this file */ 970 0, /* cpd: count of procedures for this file */ 971 0, /* iauxBase: file's auxiliary entries */ 972 0, /* caux: count of file's auxiliary entries */ 973 0, /* rfdBase: index into the file indirect table */ 974 0, /* crfd: count file indirect entries */ 975 langC, /* lang: language for this file */ 976 1, /* fMerge: whether this file can be merged */ 977 0, /* fReadin: true if read in (not just created) */ 978 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */ 979 GLEVEL_2, /* glevel: level this file was compiled with */ 980 0, /* reserved: reserved for future use */ 981 0, /* cbLineOffset: byte offset from header for this file ln's */ 982 0, /* cbLine: size of lines for this file */ 983 }, 984 985 (FDR *)0, /* orig_fdr: original file header pointer */ 986 (char *)0, /* name: pointer to filename */ 987 0, /* fake: whether this is a faked .file */ 988 0, /* void_type: ptr to aux node for void type */ 989 0, /* int_type: ptr to aux node for int type */ 990 (scope_t *)0, /* cur_scope: current scope being processed */ 991 0, /* file_index: current file # */ 992 0, /* nested_scopes: # nested scopes */ 993 INIT_VARRAY (char), /* strings: local string varray */ 994 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */ 995 INIT_VARRAY (proc_t), /* procs: procedure varray */ 996 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */ 997 998 (struct efdr *)0, /* next_file: next file structure */ 999 1000 (struct hash_control *)0, /* str_hash: string hash table */ 1001 { 0 }, /* thash_head: type hash table */ 1002}; 1003 1004static efdr_t *first_file; /* first file descriptor */ 1005static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */ 1006 1007/* Line number information is kept in a list until the assembly is 1008 finished. */ 1009typedef struct lineno_list { 1010 struct lineno_list *next; /* next element in list */ 1011 efdr_t *file; /* file this line is in */ 1012 proc_t *proc; /* procedure this line is in */ 1013 fragS *frag; /* fragment this line number is in */ 1014 unsigned long paddr; /* offset within fragment */ 1015 long lineno; /* actual line number */ 1016} lineno_list_t; 1017 1018static lineno_list_t *first_lineno; 1019static lineno_list_t *last_lineno; 1020static lineno_list_t **last_lineno_ptr = &first_lineno; 1021 1022/* Sometimes there will be some .loc statements before a .ent. We 1023 keep them in this list so that we can fill in the procedure pointer 1024 after we see the .ent. */ 1025static lineno_list_t *noproc_lineno; 1026 1027/* Union of various things that are held in pages. */ 1028typedef union page { 1029 char byte [ PAGE_SIZE ]; 1030 unsigned char ubyte [ PAGE_SIZE ]; 1031 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ]; 1032 FDR ofile [ PAGE_SIZE / sizeof (FDR) ]; 1033 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ]; 1034 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ]; 1035 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ]; 1036 DNR dense [ PAGE_SIZE / sizeof (DNR) ]; 1037 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ]; 1038 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ]; 1039 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ]; 1040 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ]; 1041 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ]; 1042 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ]; 1043 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ]; 1044 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ]; 1045} page_type; 1046 1047/* Structure holding allocation information for small sized structures. */ 1048typedef struct alloc_info { 1049 char *alloc_name; /* name of this allocation type (must be first) */ 1050 page_type *cur_page; /* current page being allocated from */ 1051 small_free_t free_list; /* current free list if any */ 1052 int unallocated; /* number of elements unallocated on page */ 1053 int total_alloc; /* total number of allocations */ 1054 int total_free; /* total number of frees */ 1055 int total_pages; /* total number of pages allocated */ 1056} alloc_info_t; 1057 1058/* Type information collected together. */ 1059typedef struct type_info { 1060 bt_t basic_type; /* basic type */ 1061 int orig_type; /* original COFF-based type */ 1062 int num_tq; /* # type qualifiers */ 1063 int num_dims; /* # dimensions */ 1064 int num_sizes; /* # sizes */ 1065 int extra_sizes; /* # extra sizes not tied with dims */ 1066 tag_t * tag_ptr; /* tag pointer */ 1067 int bitfield; /* symbol is a bitfield */ 1068 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/ 1069 symint_t dimensions [N_TQ]; /* dimensions for each array */ 1070 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of 1071 struct/union/enum + bitfield size */ 1072} type_info_t; 1073 1074/* Pre-initialized type_info struct. */ 1075static const type_info_t type_info_init = { 1076 bt_Nil, /* basic type */ 1077 T_NULL, /* original COFF-based type */ 1078 0, /* # type qualifiers */ 1079 0, /* # dimensions */ 1080 0, /* # sizes */ 1081 0, /* sizes not tied with dims */ 1082 NULL, /* ptr to tag */ 1083 0, /* bitfield */ 1084 { /* type qualifiers */ 1085 tq_Nil, 1086 tq_Nil, 1087 tq_Nil, 1088 tq_Nil, 1089 tq_Nil, 1090 tq_Nil, 1091 }, 1092 { /* dimensions */ 1093 0, 1094 0, 1095 0, 1096 0, 1097 0, 1098 0 1099 }, 1100 { /* sizes */ 1101 0, 1102 0, 1103 0, 1104 0, 1105 0, 1106 0, 1107 0, 1108 0, 1109 }, 1110}; 1111 1112/* Global hash table for the tags table and global table for file 1113 descriptors. */ 1114 1115static varray_t file_desc = INIT_VARRAY (efdr_t); 1116 1117static struct hash_control *tag_hash; 1118 1119/* Static types for int and void. Also, remember the last function's 1120 type (which is set up when we encounter the declaration for the 1121 function, and used when the end block for the function is emitted. */ 1122 1123static type_info_t int_type_info; 1124static type_info_t void_type_info; 1125static type_info_t last_func_type_info; 1126static symbolS *last_func_sym_value; 1127 1128/* Convert COFF basic type to ECOFF basic type. The T_NULL type 1129 really should use bt_Void, but this causes the current ecoff GDB to 1130 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS 1131 2.0) doesn't understand it, even though the compiler generates it. 1132 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler 1133 suite, but for now go with what works. 1134 1135 It would make sense for the .type and .scl directives to use the 1136 ECOFF numbers directly, rather than using the COFF numbers and 1137 mapping them. Unfortunately, this is historically what mips-tfile 1138 expects, and changing gcc now would be a considerable pain (the 1139 native compiler generates debugging information internally, rather 1140 than via the assembler, so it will never use .type or .scl). */ 1141 1142static const bt_t map_coff_types[] = { 1143 bt_Nil, /* T_NULL */ 1144 bt_Nil, /* T_ARG */ 1145 bt_Char, /* T_CHAR */ 1146 bt_Short, /* T_SHORT */ 1147 bt_Int, /* T_INT */ 1148 bt_Long, /* T_LONG */ 1149 bt_Float, /* T_FLOAT */ 1150 bt_Double, /* T_DOUBLE */ 1151 bt_Struct, /* T_STRUCT */ 1152 bt_Union, /* T_UNION */ 1153 bt_Enum, /* T_ENUM */ 1154 bt_Enum, /* T_MOE */ 1155 bt_UChar, /* T_UCHAR */ 1156 bt_UShort, /* T_USHORT */ 1157 bt_UInt, /* T_UINT */ 1158 bt_ULong /* T_ULONG */ 1159}; 1160 1161/* Convert COFF storage class to ECOFF storage class. */ 1162static const sc_t map_coff_storage[] = { 1163 sc_Nil, /* 0: C_NULL */ 1164 sc_Abs, /* 1: C_AUTO auto var */ 1165 sc_Undefined, /* 2: C_EXT external */ 1166 sc_Data, /* 3: C_STAT static */ 1167 sc_Register, /* 4: C_REG register */ 1168 sc_Undefined, /* 5: C_EXTDEF ??? */ 1169 sc_Text, /* 6: C_LABEL label */ 1170 sc_Text, /* 7: C_ULABEL user label */ 1171 sc_Info, /* 8: C_MOS member of struct */ 1172 sc_Abs, /* 9: C_ARG argument */ 1173 sc_Info, /* 10: C_STRTAG struct tag */ 1174 sc_Info, /* 11: C_MOU member of union */ 1175 sc_Info, /* 12: C_UNTAG union tag */ 1176 sc_Info, /* 13: C_TPDEF typedef */ 1177 sc_Data, /* 14: C_USTATIC ??? */ 1178 sc_Info, /* 15: C_ENTAG enum tag */ 1179 sc_Info, /* 16: C_MOE member of enum */ 1180 sc_Register, /* 17: C_REGPARM register parameter */ 1181 sc_Bits, /* 18; C_FIELD bitfield */ 1182 sc_Nil, /* 19 */ 1183 sc_Nil, /* 20 */ 1184 sc_Nil, /* 21 */ 1185 sc_Nil, /* 22 */ 1186 sc_Nil, /* 23 */ 1187 sc_Nil, /* 24 */ 1188 sc_Nil, /* 25 */ 1189 sc_Nil, /* 26 */ 1190 sc_Nil, /* 27 */ 1191 sc_Nil, /* 28 */ 1192 sc_Nil, /* 29 */ 1193 sc_Nil, /* 30 */ 1194 sc_Nil, /* 31 */ 1195 sc_Nil, /* 32 */ 1196 sc_Nil, /* 33 */ 1197 sc_Nil, /* 34 */ 1198 sc_Nil, /* 35 */ 1199 sc_Nil, /* 36 */ 1200 sc_Nil, /* 37 */ 1201 sc_Nil, /* 38 */ 1202 sc_Nil, /* 39 */ 1203 sc_Nil, /* 40 */ 1204 sc_Nil, /* 41 */ 1205 sc_Nil, /* 42 */ 1206 sc_Nil, /* 43 */ 1207 sc_Nil, /* 44 */ 1208 sc_Nil, /* 45 */ 1209 sc_Nil, /* 46 */ 1210 sc_Nil, /* 47 */ 1211 sc_Nil, /* 48 */ 1212 sc_Nil, /* 49 */ 1213 sc_Nil, /* 50 */ 1214 sc_Nil, /* 51 */ 1215 sc_Nil, /* 52 */ 1216 sc_Nil, /* 53 */ 1217 sc_Nil, /* 54 */ 1218 sc_Nil, /* 55 */ 1219 sc_Nil, /* 56 */ 1220 sc_Nil, /* 57 */ 1221 sc_Nil, /* 58 */ 1222 sc_Nil, /* 59 */ 1223 sc_Nil, /* 60 */ 1224 sc_Nil, /* 61 */ 1225 sc_Nil, /* 62 */ 1226 sc_Nil, /* 63 */ 1227 sc_Nil, /* 64 */ 1228 sc_Nil, /* 65 */ 1229 sc_Nil, /* 66 */ 1230 sc_Nil, /* 67 */ 1231 sc_Nil, /* 68 */ 1232 sc_Nil, /* 69 */ 1233 sc_Nil, /* 70 */ 1234 sc_Nil, /* 71 */ 1235 sc_Nil, /* 72 */ 1236 sc_Nil, /* 73 */ 1237 sc_Nil, /* 74 */ 1238 sc_Nil, /* 75 */ 1239 sc_Nil, /* 76 */ 1240 sc_Nil, /* 77 */ 1241 sc_Nil, /* 78 */ 1242 sc_Nil, /* 79 */ 1243 sc_Nil, /* 80 */ 1244 sc_Nil, /* 81 */ 1245 sc_Nil, /* 82 */ 1246 sc_Nil, /* 83 */ 1247 sc_Nil, /* 84 */ 1248 sc_Nil, /* 85 */ 1249 sc_Nil, /* 86 */ 1250 sc_Nil, /* 87 */ 1251 sc_Nil, /* 88 */ 1252 sc_Nil, /* 89 */ 1253 sc_Nil, /* 90 */ 1254 sc_Nil, /* 91 */ 1255 sc_Nil, /* 92 */ 1256 sc_Nil, /* 93 */ 1257 sc_Nil, /* 94 */ 1258 sc_Nil, /* 95 */ 1259 sc_Nil, /* 96 */ 1260 sc_Nil, /* 97 */ 1261 sc_Nil, /* 98 */ 1262 sc_Nil, /* 99 */ 1263 sc_Text, /* 100: C_BLOCK block start/end */ 1264 sc_Text, /* 101: C_FCN function start/end */ 1265 sc_Info, /* 102: C_EOS end of struct/union/enum */ 1266 sc_Nil, /* 103: C_FILE file start */ 1267 sc_Nil, /* 104: C_LINE line number */ 1268 sc_Nil, /* 105: C_ALIAS combined type info */ 1269 sc_Nil, /* 106: C_HIDDEN ??? */ 1270}; 1271 1272/* Convert COFF storage class to ECOFF symbol type. */ 1273static const st_t map_coff_sym_type[] = { 1274 st_Nil, /* 0: C_NULL */ 1275 st_Local, /* 1: C_AUTO auto var */ 1276 st_Global, /* 2: C_EXT external */ 1277 st_Static, /* 3: C_STAT static */ 1278 st_Local, /* 4: C_REG register */ 1279 st_Global, /* 5: C_EXTDEF ??? */ 1280 st_Label, /* 6: C_LABEL label */ 1281 st_Label, /* 7: C_ULABEL user label */ 1282 st_Member, /* 8: C_MOS member of struct */ 1283 st_Param, /* 9: C_ARG argument */ 1284 st_Block, /* 10: C_STRTAG struct tag */ 1285 st_Member, /* 11: C_MOU member of union */ 1286 st_Block, /* 12: C_UNTAG union tag */ 1287 st_Typedef, /* 13: C_TPDEF typedef */ 1288 st_Static, /* 14: C_USTATIC ??? */ 1289 st_Block, /* 15: C_ENTAG enum tag */ 1290 st_Member, /* 16: C_MOE member of enum */ 1291 st_Param, /* 17: C_REGPARM register parameter */ 1292 st_Member, /* 18; C_FIELD bitfield */ 1293 st_Nil, /* 19 */ 1294 st_Nil, /* 20 */ 1295 st_Nil, /* 21 */ 1296 st_Nil, /* 22 */ 1297 st_Nil, /* 23 */ 1298 st_Nil, /* 24 */ 1299 st_Nil, /* 25 */ 1300 st_Nil, /* 26 */ 1301 st_Nil, /* 27 */ 1302 st_Nil, /* 28 */ 1303 st_Nil, /* 29 */ 1304 st_Nil, /* 30 */ 1305 st_Nil, /* 31 */ 1306 st_Nil, /* 32 */ 1307 st_Nil, /* 33 */ 1308 st_Nil, /* 34 */ 1309 st_Nil, /* 35 */ 1310 st_Nil, /* 36 */ 1311 st_Nil, /* 37 */ 1312 st_Nil, /* 38 */ 1313 st_Nil, /* 39 */ 1314 st_Nil, /* 40 */ 1315 st_Nil, /* 41 */ 1316 st_Nil, /* 42 */ 1317 st_Nil, /* 43 */ 1318 st_Nil, /* 44 */ 1319 st_Nil, /* 45 */ 1320 st_Nil, /* 46 */ 1321 st_Nil, /* 47 */ 1322 st_Nil, /* 48 */ 1323 st_Nil, /* 49 */ 1324 st_Nil, /* 50 */ 1325 st_Nil, /* 51 */ 1326 st_Nil, /* 52 */ 1327 st_Nil, /* 53 */ 1328 st_Nil, /* 54 */ 1329 st_Nil, /* 55 */ 1330 st_Nil, /* 56 */ 1331 st_Nil, /* 57 */ 1332 st_Nil, /* 58 */ 1333 st_Nil, /* 59 */ 1334 st_Nil, /* 60 */ 1335 st_Nil, /* 61 */ 1336 st_Nil, /* 62 */ 1337 st_Nil, /* 63 */ 1338 st_Nil, /* 64 */ 1339 st_Nil, /* 65 */ 1340 st_Nil, /* 66 */ 1341 st_Nil, /* 67 */ 1342 st_Nil, /* 68 */ 1343 st_Nil, /* 69 */ 1344 st_Nil, /* 70 */ 1345 st_Nil, /* 71 */ 1346 st_Nil, /* 72 */ 1347 st_Nil, /* 73 */ 1348 st_Nil, /* 74 */ 1349 st_Nil, /* 75 */ 1350 st_Nil, /* 76 */ 1351 st_Nil, /* 77 */ 1352 st_Nil, /* 78 */ 1353 st_Nil, /* 79 */ 1354 st_Nil, /* 80 */ 1355 st_Nil, /* 81 */ 1356 st_Nil, /* 82 */ 1357 st_Nil, /* 83 */ 1358 st_Nil, /* 84 */ 1359 st_Nil, /* 85 */ 1360 st_Nil, /* 86 */ 1361 st_Nil, /* 87 */ 1362 st_Nil, /* 88 */ 1363 st_Nil, /* 89 */ 1364 st_Nil, /* 90 */ 1365 st_Nil, /* 91 */ 1366 st_Nil, /* 92 */ 1367 st_Nil, /* 93 */ 1368 st_Nil, /* 94 */ 1369 st_Nil, /* 95 */ 1370 st_Nil, /* 96 */ 1371 st_Nil, /* 97 */ 1372 st_Nil, /* 98 */ 1373 st_Nil, /* 99 */ 1374 st_Block, /* 100: C_BLOCK block start/end */ 1375 st_Proc, /* 101: C_FCN function start/end */ 1376 st_End, /* 102: C_EOS end of struct/union/enum */ 1377 st_File, /* 103: C_FILE file start */ 1378 st_Nil, /* 104: C_LINE line number */ 1379 st_Nil, /* 105: C_ALIAS combined type info */ 1380 st_Nil, /* 106: C_HIDDEN ??? */ 1381}; 1382 1383/* Keep track of different sized allocation requests. */ 1384static alloc_info_t alloc_counts[(int) alloc_type_last]; 1385 1386/* Record whether we have seen any debugging information. */ 1387int ecoff_debugging_seen = 0; 1388 1389/* Various statics. */ 1390static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */ 1391static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */ 1392static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */ 1393static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */ 1394static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */ 1395#ifdef ECOFF_DEBUG 1396static int debug = 0; /* trace functions */ 1397#endif 1398static int stabs_seen = 0; /* != 0 if stabs have been seen */ 1399 1400static int current_file_idx; 1401static 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 1408static char stabs_symbol[] = STABS_SYMBOL; 1409 1410/* Prototypes for functions defined in this file. */ 1411 1412static void add_varray_page (varray_t *vp); 1413static symint_t add_string (varray_t *vp, 1414 struct hash_control *hash_tbl, 1415 const char *str, 1416 shash_t **ret_hash); 1417static localsym_t *add_ecoff_symbol (const char *str, st_t type, 1418 sc_t storage, symbolS *sym, 1419 bfd_vma addend, symint_t value, 1420 symint_t indx); 1421static symint_t add_aux_sym_symint (symint_t aux_word); 1422static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index); 1423static symint_t add_aux_sym_tir (type_info_t *t, 1424 hash_state_t state, 1425 thash_t **hash_tbl); 1426static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type); 1427static void add_unknown_tag (tag_t *ptag); 1428static void add_procedure (char *func); 1429static void add_file (const char *file_name, int indx, int fake); 1430#ifdef ECOFF_DEBUG 1431static char *sc_to_string (sc_t storage_class); 1432static char *st_to_string (st_t symbol_type); 1433#endif 1434static void mark_stabs (int); 1435static char *ecoff_add_bytes (char **buf, char **bufend, 1436 char *bufptr, unsigned long need); 1437static unsigned long ecoff_padding_adjust 1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1439 unsigned long offset, char **bufptrptr); 1440static unsigned long ecoff_build_lineno 1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1442 unsigned long offset, long *linecntptr); 1443static unsigned long ecoff_build_symbols 1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1445 unsigned long offset); 1446static unsigned long ecoff_build_procs 1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1448 unsigned long offset); 1449static unsigned long ecoff_build_aux 1450 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1451 unsigned long offset); 1452static unsigned long ecoff_build_strings (char **buf, char **bufend, 1453 unsigned long offset, 1454 varray_t *vp); 1455static unsigned long ecoff_build_ss 1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1457 unsigned long offset); 1458static unsigned long ecoff_build_fdr 1459 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1460 unsigned long offset); 1461static void ecoff_setup_ext (void); 1462static page_type *allocate_cluster (unsigned long npages); 1463static page_type *allocate_page (void); 1464static scope_t *allocate_scope (void); 1465static void free_scope (scope_t *ptr); 1466static vlinks_t *allocate_vlinks (void); 1467static shash_t *allocate_shash (void); 1468static thash_t *allocate_thash (void); 1469static tag_t *allocate_tag (void); 1470static void free_tag (tag_t *ptr); 1471static forward_t *allocate_forward (void); 1472static thead_t *allocate_thead (void); 1473static void free_thead (thead_t *ptr); 1474static lineno_list_t *allocate_lineno_list (void); 1475 1476/* This function should be called when the assembler starts up. */ 1477 1478void 1479ecoff_read_begin_hook (void) 1480{ 1481 tag_hash = hash_new (); 1482 top_tag_head = allocate_thead (); 1483 top_tag_head->first_tag = (tag_t *) NULL; 1484 top_tag_head->free = (thead_t *) NULL; 1485 top_tag_head->prev = cur_tag_head; 1486 cur_tag_head = top_tag_head; 1487} 1488 1489/* This function should be called when a symbol is created. */ 1490 1491void 1492ecoff_symbol_new_hook (symbolS *symbolP) 1493{ 1494 OBJ_SYMFIELD_TYPE *obj; 1495 1496 /* Make sure that we have a file pointer, but only if we have seen a 1497 file. If we haven't seen a file, then this is a probably special 1498 symbol created by md_begin which may required special handling at 1499 some point. Creating a dummy file with a dummy name is certainly 1500 wrong. */ 1501 if (cur_file_ptr == (efdr_t *) NULL 1502 && seen_at_least_1_file ()) 1503 add_file ((const char *) NULL, 0, 1); 1504 obj = symbol_get_obj (symbolP); 1505 obj->ecoff_file = cur_file_ptr; 1506 obj->ecoff_symbol = NULL; 1507 obj->ecoff_extern_size = 0; 1508} 1509 1510/* Add a page to a varray object. */ 1511 1512static void 1513add_varray_page (varray_t *vp /* varray to add page to */) 1514{ 1515 vlinks_t *new_links = allocate_vlinks (); 1516 1517#ifdef MALLOC_CHECK 1518 if (vp->object_size > 1) 1519 new_links->datum = (page_type *) xcalloc (1, vp->object_size); 1520 else 1521#endif 1522 new_links->datum = allocate_page (); 1523 1524 alloc_counts[(int) alloc_type_varray].total_alloc++; 1525 alloc_counts[(int) alloc_type_varray].total_pages++; 1526 1527 new_links->start_index = vp->num_allocated; 1528 vp->objects_last_page = 0; 1529 1530 if (vp->first == (vlinks_t *) NULL) /* first allocation? */ 1531 vp->first = vp->last = new_links; 1532 else 1533 { /* 2nd or greater allocation */ 1534 new_links->prev = vp->last; 1535 vp->last->next = new_links; 1536 vp->last = new_links; 1537 } 1538} 1539 1540/* Add a string (and null pad) to one of the string tables. */ 1541 1542static symint_t 1543add_string (varray_t *vp, /* string obstack */ 1544 struct hash_control *hash_tbl, /* ptr to hash table */ 1545 const char *str, /* string */ 1546 shash_t **ret_hash /* return hash pointer */) 1547{ 1548 register unsigned long len = strlen (str); 1549 register shash_t *hash_ptr; 1550 1551 if (len >= PAGE_USIZE) 1552 as_fatal (_("string too big (%lu bytes)"), len); 1553 1554 hash_ptr = (shash_t *) hash_find (hash_tbl, str); 1555 if (hash_ptr == (shash_t *) NULL) 1556 { 1557 register const char *err; 1558 1559 if (vp->objects_last_page + len >= PAGE_USIZE) 1560 { 1561 vp->num_allocated = 1562 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE; 1563 add_varray_page (vp); 1564 } 1565 1566 hash_ptr = allocate_shash (); 1567 hash_ptr->indx = vp->num_allocated; 1568 1569 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page]; 1570 1571 vp->objects_last_page += len + 1; 1572 vp->num_allocated += len + 1; 1573 1574 strcpy (hash_ptr->string, str); 1575 1576 err = hash_insert (hash_tbl, str, (char *) hash_ptr); 1577 if (err) 1578 as_fatal (_("inserting \"%s\" into string hash table: %s"), 1579 str, err); 1580 } 1581 1582 if (ret_hash != (shash_t **) NULL) 1583 *ret_hash = hash_ptr; 1584 1585 return hash_ptr->indx; 1586} 1587 1588/* Add debugging information for a symbol. */ 1589 1590static localsym_t * 1591add_ecoff_symbol (const char *str, /* symbol name */ 1592 st_t type, /* symbol type */ 1593 sc_t storage, /* storage class */ 1594 symbolS *sym_value, /* associated symbol. */ 1595 bfd_vma addend, /* addend to sym_value. */ 1596 symint_t value, /* value of symbol */ 1597 symint_t indx /* index to local/aux. syms */) 1598{ 1599 localsym_t *psym; 1600 register scope_t *pscope; 1601 register thead_t *ptag_head; 1602 register tag_t *ptag; 1603 register tag_t *ptag_next; 1604 register varray_t *vp; 1605 register int scope_delta = 0; 1606 shash_t *hash_ptr = (shash_t *) NULL; 1607 1608 if (cur_file_ptr == (efdr_t *) NULL) 1609 as_fatal (_("no current file pointer")); 1610 1611 vp = &cur_file_ptr->symbols; 1612 1613 if (vp->objects_last_page == vp->objects_per_page) 1614 add_varray_page (vp); 1615 1616 psym = &vp->last->datum->sym[vp->objects_last_page++]; 1617 1618 if (str == (const char *) NULL && sym_value != (symbolS *) NULL) 1619 psym->name = S_GET_NAME (sym_value); 1620 else 1621 psym->name = str; 1622 psym->as_sym = sym_value; 1623 if (sym_value != (symbolS *) NULL) 1624 symbol_get_obj (sym_value)->ecoff_symbol = psym; 1625 psym->addend = addend; 1626 psym->file_ptr = cur_file_ptr; 1627 psym->proc_ptr = cur_proc_ptr; 1628 psym->begin_ptr = (localsym_t *) NULL; 1629 psym->index_ptr = (aux_t *) NULL; 1630 psym->forward_ref = (forward_t *) NULL; 1631 psym->sym_index = -1; 1632 memset (&psym->ecoff_sym, 0, sizeof (EXTR)); 1633 psym->ecoff_sym.asym.value = value; 1634 psym->ecoff_sym.asym.st = (unsigned) type; 1635 psym->ecoff_sym.asym.sc = (unsigned) storage; 1636 psym->ecoff_sym.asym.index = indx; 1637 1638 /* If there is an associated symbol, we wait until the end of the 1639 assembly before deciding where to put the name (it may be just an 1640 external symbol). Otherwise, this is just a debugging symbol and 1641 the name should go with the current file. */ 1642 if (sym_value == (symbolS *) NULL) 1643 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL) 1644 ? 0 1645 : add_string (&cur_file_ptr->strings, 1646 cur_file_ptr->str_hash, 1647 str, 1648 &hash_ptr)); 1649 1650 ++vp->num_allocated; 1651 1652 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym)) 1653 return psym; 1654 1655 /* Save the symbol within the hash table if this is a static 1656 item, and it has a name. */ 1657 if (hash_ptr != (shash_t *) NULL 1658 && (type == st_Global || type == st_Static || type == st_Label 1659 || type == st_Proc || type == st_StaticProc)) 1660 hash_ptr->sym_ptr = psym; 1661 1662 /* push or pop a scope if appropriate. */ 1663 switch (type) 1664 { 1665 default: 1666 break; 1667 1668 case st_File: /* beginning of file */ 1669 case st_Proc: /* procedure */ 1670 case st_StaticProc: /* static procedure */ 1671 case st_Block: /* begin scope */ 1672 pscope = allocate_scope (); 1673 pscope->prev = cur_file_ptr->cur_scope; 1674 pscope->lsym = psym; 1675 pscope->type = type; 1676 cur_file_ptr->cur_scope = pscope; 1677 1678 if (type != st_File) 1679 scope_delta = 1; 1680 1681 /* For every block type except file, struct, union, or 1682 enumeration blocks, push a level on the tag stack. We omit 1683 file types, so that tags can span file boundaries. */ 1684 if (type != st_File && storage != sc_Info) 1685 { 1686 ptag_head = allocate_thead (); 1687 ptag_head->first_tag = 0; 1688 ptag_head->prev = cur_tag_head; 1689 cur_tag_head = ptag_head; 1690 } 1691 break; 1692 1693 case st_End: 1694 pscope = cur_file_ptr->cur_scope; 1695 if (pscope == (scope_t *) NULL) 1696 as_fatal (_("too many st_End's")); 1697 else 1698 { 1699 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st; 1700 1701 psym->begin_ptr = pscope->lsym; 1702 1703 if (begin_type != st_File) 1704 scope_delta = -1; 1705 1706 /* Except for file, structure, union, or enumeration end 1707 blocks remove all tags created within this scope. */ 1708 if (begin_type != st_File && storage != sc_Info) 1709 { 1710 ptag_head = cur_tag_head; 1711 cur_tag_head = ptag_head->prev; 1712 1713 for (ptag = ptag_head->first_tag; 1714 ptag != (tag_t *) NULL; 1715 ptag = ptag_next) 1716 { 1717 if (ptag->forward_ref != (forward_t *) NULL) 1718 add_unknown_tag (ptag); 1719 1720 ptag_next = ptag->same_block; 1721 ptag->hash_ptr->tag_ptr = ptag->same_name; 1722 free_tag (ptag); 1723 } 1724 1725 free_thead (ptag_head); 1726 } 1727 1728 cur_file_ptr->cur_scope = pscope->prev; 1729 1730 /* block begin gets next sym #. This is set when we know 1731 the symbol index value. */ 1732 1733 /* Functions push two or more aux words as follows: 1734 1st word: index+1 of the end symbol (filled in later). 1735 2nd word: type of the function (plus any aux words needed). 1736 Also, tie the external pointer back to the function begin symbol. */ 1737 if (begin_type != st_File && begin_type != st_Block) 1738 { 1739 symint_t ty; 1740 varray_t *svp = &cur_file_ptr->aux_syms; 1741 1742 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0); 1743 pscope->lsym->index_ptr = 1744 &svp->last->datum->aux[svp->objects_last_page - 1]; 1745 ty = add_aux_sym_tir (&last_func_type_info, 1746 hash_no, 1747 &cur_file_ptr->thash_head[0]); 1748 1749/* This seems to be unnecessary. I'm not even sure what it is 1750 * intended to do. It's from mips-tfile. 1751 * if (last_func_sym_value != (symbolS *) NULL) 1752 * { 1753 * last_func_sym_value->ifd = cur_file_ptr->file_index; 1754 * last_func_sym_value->index = ty; 1755 * } 1756 */ 1757 } 1758 1759 free_scope (pscope); 1760 } 1761 } 1762 1763 cur_file_ptr->nested_scopes += scope_delta; 1764 1765#ifdef ECOFF_DEBUG 1766 if (debug && type != st_File 1767 && (debug > 2 || type == st_Block || type == st_End 1768 || type == st_Proc || type == st_StaticProc)) 1769 { 1770 char *sc_str = sc_to_string (storage); 1771 char *st_str = st_to_string (type); 1772 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0); 1773 1774 fprintf (stderr, 1775 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s", 1776 value, depth, sc_str); 1777 1778 if (str_start && str_end_p1 - str_start > 0) 1779 fprintf (stderr, " st= %-11s name= %.*s\n", 1780 st_str, str_end_p1 - str_start, str_start); 1781 else 1782 { 1783 unsigned long len = strlen (st_str); 1784 fprintf (stderr, " st= %.*s\n", len - 1, st_str); 1785 } 1786 } 1787#endif 1788 1789 return psym; 1790} 1791 1792/* Add an auxiliary symbol (passing a symint). This is actually used 1793 for integral aux types, not just symints. */ 1794 1795static symint_t 1796add_aux_sym_symint (symint_t aux_word /* auxiliary information word */) 1797{ 1798 register varray_t *vp; 1799 register aux_t *aux_ptr; 1800 1801 if (cur_file_ptr == (efdr_t *) NULL) 1802 as_fatal (_("no current file pointer")); 1803 1804 vp = &cur_file_ptr->aux_syms; 1805 1806 if (vp->objects_last_page == vp->objects_per_page) 1807 add_varray_page (vp); 1808 1809 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1810 aux_ptr->type = aux_isym; 1811 aux_ptr->data.isym = aux_word; 1812 1813 return vp->num_allocated++; 1814} 1815 1816/* Add an auxiliary symbol (passing a file/symbol index combo). */ 1817 1818static symint_t 1819add_aux_sym_rndx (int file_index, symint_t sym_index) 1820{ 1821 register varray_t *vp; 1822 register aux_t *aux_ptr; 1823 1824 if (cur_file_ptr == (efdr_t *) NULL) 1825 as_fatal (_("no current file pointer")); 1826 1827 vp = &cur_file_ptr->aux_syms; 1828 1829 if (vp->objects_last_page == vp->objects_per_page) 1830 add_varray_page (vp); 1831 1832 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1833 aux_ptr->type = aux_rndx; 1834 aux_ptr->data.rndx.rfd = file_index; 1835 aux_ptr->data.rndx.index = sym_index; 1836 1837 return vp->num_allocated++; 1838} 1839 1840/* Add an auxiliary symbol (passing the basic type and possibly 1841 type qualifiers). */ 1842 1843static symint_t 1844add_aux_sym_tir (type_info_t *t, /* current type information */ 1845 hash_state_t state, /* whether to hash type or not */ 1846 thash_t **hash_tbl /* pointer to hash table to use */) 1847{ 1848 register varray_t *vp; 1849 register aux_t *aux_ptr; 1850 static AUXU init_aux; 1851 symint_t ret; 1852 int i; 1853 AUXU aux; 1854 1855 if (cur_file_ptr == (efdr_t *) NULL) 1856 as_fatal (_("no current file pointer")); 1857 1858 vp = &cur_file_ptr->aux_syms; 1859 1860 aux = init_aux; 1861 aux.ti.bt = (int) t->basic_type; 1862 aux.ti.continued = 0; 1863 aux.ti.fBitfield = t->bitfield; 1864 1865 aux.ti.tq0 = (int) t->type_qualifiers[0]; 1866 aux.ti.tq1 = (int) t->type_qualifiers[1]; 1867 aux.ti.tq2 = (int) t->type_qualifiers[2]; 1868 aux.ti.tq3 = (int) t->type_qualifiers[3]; 1869 aux.ti.tq4 = (int) t->type_qualifiers[4]; 1870 aux.ti.tq5 = (int) t->type_qualifiers[5]; 1871 1872 /* For anything that adds additional information, we must not hash, 1873 so check here, and reset our state. */ 1874 1875 if (state != hash_no 1876 && (t->type_qualifiers[0] == tq_Array 1877 || t->type_qualifiers[1] == tq_Array 1878 || t->type_qualifiers[2] == tq_Array 1879 || t->type_qualifiers[3] == tq_Array 1880 || t->type_qualifiers[4] == tq_Array 1881 || t->type_qualifiers[5] == tq_Array 1882 || t->basic_type == bt_Struct 1883 || t->basic_type == bt_Union 1884 || t->basic_type == bt_Enum 1885 || t->bitfield 1886 || t->num_dims > 0)) 1887 state = hash_no; 1888 1889 /* See if we can hash this type, and save some space, but some types 1890 can't be hashed (because they contain arrays or continuations), 1891 and others can be put into the hash list, but cannot use existing 1892 types because other aux entries precede this one. */ 1893 1894 if (state != hash_no) 1895 { 1896 register thash_t *hash_ptr; 1897 register symint_t hi; 1898 1899 hi = aux.isym & ((1 << HASHBITS) - 1); 1900 hi %= THASH_SIZE; 1901 1902 for (hash_ptr = hash_tbl[hi]; 1903 hash_ptr != (thash_t *)0; 1904 hash_ptr = hash_ptr->next) 1905 { 1906 if (aux.isym == hash_ptr->type.isym) 1907 break; 1908 } 1909 1910 if (hash_ptr != (thash_t *) NULL && state == hash_yes) 1911 return hash_ptr->indx; 1912 1913 if (hash_ptr == (thash_t *) NULL) 1914 { 1915 hash_ptr = allocate_thash (); 1916 hash_ptr->next = hash_tbl[hi]; 1917 hash_ptr->type = aux; 1918 hash_ptr->indx = vp->num_allocated; 1919 hash_tbl[hi] = hash_ptr; 1920 } 1921 } 1922 1923 /* Everything is set up, add the aux symbol. */ 1924 if (vp->objects_last_page == vp->objects_per_page) 1925 add_varray_page (vp); 1926 1927 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1928 aux_ptr->type = aux_tir; 1929 aux_ptr->data = aux; 1930 1931 ret = vp->num_allocated++; 1932 1933 /* Add bitfield length if it exists. 1934 1935 NOTE: Mips documentation claims bitfield goes at the end of the 1936 AUX record, but the DECstation compiler emits it here. 1937 (This would only make a difference for enum bitfields.) 1938 1939 Also note: We use the last size given since gcc may emit 2 1940 for an enum bitfield. */ 1941 1942 if (t->bitfield) 1943 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]); 1944 1945 /* Add tag information if needed. Structure, union, and enum 1946 references add 2 aux symbols: a [file index, symbol index] 1947 pointer to the structure type, and the current file index. */ 1948 1949 if (t->basic_type == bt_Struct 1950 || t->basic_type == bt_Union 1951 || t->basic_type == bt_Enum) 1952 { 1953 register symint_t file_index = t->tag_ptr->ifd; 1954 register localsym_t *sym = t->tag_ptr->sym; 1955 register forward_t *forward_ref = allocate_forward (); 1956 1957 if (sym != (localsym_t *) NULL) 1958 { 1959 forward_ref->next = sym->forward_ref; 1960 sym->forward_ref = forward_ref; 1961 } 1962 else 1963 { 1964 forward_ref->next = t->tag_ptr->forward_ref; 1965 t->tag_ptr->forward_ref = forward_ref; 1966 } 1967 1968 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil); 1969 forward_ref->index_ptr 1970 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1971 1972 (void) add_aux_sym_symint (file_index); 1973 forward_ref->ifd_ptr 1974 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1975 } 1976 1977 /* Add information about array bounds if they exist. */ 1978 for (i = 0; i < t->num_dims; i++) 1979 { 1980 (void) add_aux_sym_rndx (ST_RFDESCAPE, 1981 cur_file_ptr->int_type); 1982 1983 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/ 1984 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */ 1985 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/ 1986 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */ 1987 ? 0 1988 : (t->sizes[i] * 8) / t->dimensions[i]); 1989 }; 1990 1991 /* NOTE: Mips documentation claims that the bitfield width goes here. 1992 But it needs to be emitted earlier. */ 1993 1994 return ret; 1995} 1996 1997/* Add a tag to the tag table (unless it already exists). */ 1998 1999static tag_t * 2000get_tag (const char *tag, /* tag name */ 2001 localsym_t *sym, /* tag start block */ 2002 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */) 2003{ 2004 shash_t *hash_ptr; 2005 const char *err; 2006 tag_t *tag_ptr; 2007 2008 if (cur_file_ptr == (efdr_t *) NULL) 2009 as_fatal (_("no current file pointer")); 2010 2011 hash_ptr = (shash_t *) hash_find (tag_hash, tag); 2012 2013 if (hash_ptr != (shash_t *) NULL 2014 && hash_ptr->tag_ptr != (tag_t *) NULL) 2015 { 2016 tag_ptr = hash_ptr->tag_ptr; 2017 if (sym != (localsym_t *) NULL) 2018 { 2019 tag_ptr->basic_type = basic_type; 2020 tag_ptr->ifd = cur_file_ptr->file_index; 2021 tag_ptr->sym = sym; 2022 } 2023 return tag_ptr; 2024 } 2025 2026 if (hash_ptr == (shash_t *) NULL) 2027 { 2028 char *perm; 2029 2030 perm = xstrdup (tag); 2031 hash_ptr = allocate_shash (); 2032 err = hash_insert (tag_hash, perm, (char *) hash_ptr); 2033 if (err) 2034 as_fatal (_("inserting \"%s\" into tag hash table: %s"), 2035 tag, err); 2036 hash_ptr->string = perm; 2037 } 2038 2039 tag_ptr = allocate_tag (); 2040 tag_ptr->forward_ref = (forward_t *) NULL; 2041 tag_ptr->hash_ptr = hash_ptr; 2042 tag_ptr->same_name = hash_ptr->tag_ptr; 2043 tag_ptr->basic_type = basic_type; 2044 tag_ptr->sym = sym; 2045 tag_ptr->ifd = ((sym == (localsym_t *) NULL) 2046 ? (symint_t) -1 2047 : cur_file_ptr->file_index); 2048 tag_ptr->same_block = cur_tag_head->first_tag; 2049 2050 cur_tag_head->first_tag = tag_ptr; 2051 hash_ptr->tag_ptr = tag_ptr; 2052 2053 return tag_ptr; 2054} 2055 2056/* Add an unknown {struct, union, enum} tag. */ 2057 2058static void 2059add_unknown_tag (tag_t *ptag /* pointer to tag information */) 2060{ 2061 shash_t *hash_ptr = ptag->hash_ptr; 2062 char *name = hash_ptr->string; 2063 localsym_t *sym; 2064 forward_t **pf; 2065 2066#ifdef ECOFF_DEBUG 2067 if (debug > 1) 2068 { 2069 char *agg_type = "{unknown aggregate type}"; 2070 switch (ptag->basic_type) 2071 { 2072 case bt_Struct: agg_type = "struct"; break; 2073 case bt_Union: agg_type = "union"; break; 2074 case bt_Enum: agg_type = "enum"; break; 2075 default: break; 2076 } 2077 2078 fprintf (stderr, "unknown %s %.*s found\n", agg_type, 2079 hash_ptr->len, name_start); 2080 } 2081#endif 2082 2083 sym = add_ecoff_symbol (name, 2084 st_Block, 2085 sc_Info, 2086 (symbolS *) NULL, 2087 (bfd_vma) 0, 2088 (symint_t) 0, 2089 (symint_t) 0); 2090 2091 (void) add_ecoff_symbol (name, 2092 st_End, 2093 sc_Info, 2094 (symbolS *) NULL, 2095 (bfd_vma) 0, 2096 (symint_t) 0, 2097 (symint_t) 0); 2098 2099 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) 2100 ; 2101 *pf = ptag->forward_ref; 2102} 2103 2104/* Add a procedure to the current file's list of procedures, and record 2105 this is the current procedure. */ 2106 2107static void 2108add_procedure (char *func /* func name */) 2109{ 2110 register varray_t *vp; 2111 register proc_t *new_proc_ptr; 2112 symbolS *sym; 2113 2114#ifdef ECOFF_DEBUG 2115 if (debug) 2116 fputc ('\n', stderr); 2117#endif 2118 2119 if (cur_file_ptr == (efdr_t *) NULL) 2120 as_fatal (_("no current file pointer")); 2121 2122 vp = &cur_file_ptr->procs; 2123 2124 if (vp->objects_last_page == vp->objects_per_page) 2125 add_varray_page (vp); 2126 2127 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++]; 2128 2129 if (first_proc_ptr == (proc_t *) NULL) 2130 first_proc_ptr = new_proc_ptr; 2131 2132 vp->num_allocated++; 2133 2134 new_proc_ptr->pdr.isym = -1; 2135 new_proc_ptr->pdr.iline = -1; 2136 new_proc_ptr->pdr.lnLow = -1; 2137 new_proc_ptr->pdr.lnHigh = -1; 2138 2139 /* Set the BSF_FUNCTION flag for the symbol. */ 2140 sym = symbol_find_or_make (func); 2141 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; 2142 2143 /* Push the start of the function. */ 2144 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text, 2145 sym, (bfd_vma) 0, (symint_t) 0, 2146 (symint_t) 0); 2147 2148 ++proc_cnt; 2149 2150 /* Fill in the linenos preceding the .ent, if any. */ 2151 if (noproc_lineno != (lineno_list_t *) NULL) 2152 { 2153 lineno_list_t *l; 2154 2155 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next) 2156 l->proc = new_proc_ptr; 2157 *last_lineno_ptr = noproc_lineno; 2158 while (*last_lineno_ptr != NULL) 2159 { 2160 last_lineno = *last_lineno_ptr; 2161 last_lineno_ptr = &last_lineno->next; 2162 } 2163 noproc_lineno = (lineno_list_t *) NULL; 2164 } 2165} 2166 2167symbolS * 2168ecoff_get_cur_proc_sym (void) 2169{ 2170 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL); 2171} 2172 2173/* Add a new filename, and set up all of the file relative 2174 virtual arrays (strings, symbols, aux syms, etc.). Record 2175 where the current file structure lives. */ 2176 2177static void 2178add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake) 2179{ 2180 register int first_ch; 2181 register efdr_t *fil_ptr; 2182 2183#ifdef ECOFF_DEBUG 2184 if (debug) 2185 fprintf (stderr, "\tfile\t%.*s\n", len, file_start); 2186#endif 2187 2188 /* If the file name is NULL, then no .file symbol appeared, and we 2189 want to use the actual file name. */ 2190 if (file_name == (const char *) NULL) 2191 { 2192 char *file; 2193 2194 if (first_file != (efdr_t *) NULL) 2195 as_fatal (_("fake .file after real one")); 2196 as_where (&file, (unsigned int *) NULL); 2197 file_name = (const char *) file; 2198 2199 /* Automatically generate ECOFF debugging information, since I 2200 think that's what other ECOFF assemblers do. We don't do 2201 this if we see a .file directive with a string, since that 2202 implies that some sort of debugging information is being 2203 provided. */ 2204 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED) 2205 debug_type = DEBUG_ECOFF; 2206 } 2207 else if (debug_type == DEBUG_UNSPECIFIED) 2208 debug_type = DEBUG_NONE; 2209 2210#ifndef NO_LISTING 2211 if (listing) 2212 listing_source_file (file_name); 2213#endif 2214 2215 current_stabs_filename = file_name; 2216 2217 /* If we're creating stabs, then we don't actually make a new FDR. 2218 Instead, we just create a stabs symbol. */ 2219 if (stabs_seen) 2220 { 2221 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil, 2222 symbol_new ("L0\001", now_seg, 2223 (valueT) frag_now_fix (), 2224 frag_now), 2225 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL)); 2226 return; 2227 } 2228 2229 first_ch = *file_name; 2230 2231 /* FIXME: We can't safely merge files which have line number 2232 information (fMerge will be zero in this case). Otherwise, we 2233 get incorrect line number debugging info. See for instance 2234 ecoff_build_lineno, which will end up setting all file->fdr.* 2235 fields multiple times, resulting in incorrect debug info. In 2236 order to make this work right, all line number and symbol info 2237 for the same source file has to be adjacent in the object file, 2238 so that a single file descriptor can be used to point to them. 2239 This would require maintaining file specific lists of line 2240 numbers and symbols for each file, so that they can be merged 2241 together (or output together) when two .file pseudo-ops are 2242 merged into one file descriptor. */ 2243 2244 /* See if the file has already been created. */ 2245 for (fil_ptr = first_file; 2246 fil_ptr != (efdr_t *) NULL; 2247 fil_ptr = fil_ptr->next_file) 2248 { 2249 if (first_ch == fil_ptr->name[0] 2250 && strcmp (file_name, fil_ptr->name) == 0 2251 && fil_ptr->fdr.fMerge) 2252 { 2253 cur_file_ptr = fil_ptr; 2254 if (! fake) 2255 cur_file_ptr->fake = 0; 2256 break; 2257 } 2258 } 2259 2260 /* If this is a new file, create it. */ 2261 if (fil_ptr == (efdr_t *) NULL) 2262 { 2263 if (file_desc.objects_last_page == file_desc.objects_per_page) 2264 add_varray_page (&file_desc); 2265 2266 fil_ptr = cur_file_ptr = 2267 &file_desc.last->datum->file[file_desc.objects_last_page++]; 2268 *fil_ptr = init_file; 2269 2270 fil_ptr->file_index = current_file_idx++; 2271 ++file_desc.num_allocated; 2272 2273 fil_ptr->fake = fake; 2274 2275 /* Allocate the string hash table. */ 2276 fil_ptr->str_hash = hash_new (); 2277 2278 /* Make sure 0 byte in string table is null */ 2279 add_string (&fil_ptr->strings, 2280 fil_ptr->str_hash, 2281 "", 2282 (shash_t **)0); 2283 2284 if (strlen (file_name) > PAGE_USIZE - 2) 2285 as_fatal (_("filename goes over one page boundary")); 2286 2287 /* Push the start of the filename. We assume that the filename 2288 will be stored at string offset 1. */ 2289 (void) add_ecoff_symbol (file_name, st_File, sc_Text, 2290 (symbolS *) NULL, (bfd_vma) 0, 2291 (symint_t) 0, (symint_t) 0); 2292 fil_ptr->fdr.rss = 1; 2293 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1]; 2294 2295 /* Update the linked list of file descriptors. */ 2296 *last_file_ptr = fil_ptr; 2297 last_file_ptr = &fil_ptr->next_file; 2298 2299 /* Add void & int types to the file (void should be first to catch 2300 errant 0's within the index fields). */ 2301 fil_ptr->void_type = add_aux_sym_tir (&void_type_info, 2302 hash_yes, 2303 &cur_file_ptr->thash_head[0]); 2304 2305 fil_ptr->int_type = add_aux_sym_tir (&int_type_info, 2306 hash_yes, 2307 &cur_file_ptr->thash_head[0]); 2308 } 2309} 2310 2311/* This function is called when the assembler notices a preprocessor 2312 directive switching to a new file. This will not happen in 2313 compiler output, only in hand coded assembler. */ 2314 2315void 2316ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED) 2317{ 2318 if (cur_file_ptr != NULL && strcmp (cur_file_ptr->name, name) == 0) 2319 return; 2320 add_file (name, 0, 0); 2321 2322 /* This is a hand coded assembler file, so automatically turn on 2323 debugging information. */ 2324 if (debug_type == DEBUG_UNSPECIFIED) 2325 debug_type = DEBUG_ECOFF; 2326} 2327 2328#ifdef ECOFF_DEBUG 2329 2330/* Convert storage class to string. */ 2331 2332static char * 2333sc_to_string (storage_class) 2334 sc_t storage_class; 2335{ 2336 switch (storage_class) 2337 { 2338 case sc_Nil: return "Nil,"; 2339 case sc_Text: return "Text,"; 2340 case sc_Data: return "Data,"; 2341 case sc_Bss: return "Bss,"; 2342 case sc_Register: return "Register,"; 2343 case sc_Abs: return "Abs,"; 2344 case sc_Undefined: return "Undefined,"; 2345 case sc_CdbLocal: return "CdbLocal,"; 2346 case sc_Bits: return "Bits,"; 2347 case sc_CdbSystem: return "CdbSystem,"; 2348 case sc_RegImage: return "RegImage,"; 2349 case sc_Info: return "Info,"; 2350 case sc_UserStruct: return "UserStruct,"; 2351 case sc_SData: return "SData,"; 2352 case sc_SBss: return "SBss,"; 2353 case sc_RData: return "RData,"; 2354 case sc_Var: return "Var,"; 2355 case sc_Common: return "Common,"; 2356 case sc_SCommon: return "SCommon,"; 2357 case sc_VarRegister: return "VarRegister,"; 2358 case sc_Variant: return "Variant,"; 2359 case sc_SUndefined: return "SUndefined,"; 2360 case sc_Init: return "Init,"; 2361 case sc_Max: return "Max,"; 2362 } 2363 2364 return "???,"; 2365} 2366 2367#endif /* DEBUG */ 2368 2369#ifdef ECOFF_DEBUG 2370 2371/* Convert symbol type to string. */ 2372 2373static char * 2374st_to_string (symbol_type) 2375 st_t symbol_type; 2376{ 2377 switch (symbol_type) 2378 { 2379 case st_Nil: return "Nil,"; 2380 case st_Global: return "Global,"; 2381 case st_Static: return "Static,"; 2382 case st_Param: return "Param,"; 2383 case st_Local: return "Local,"; 2384 case st_Label: return "Label,"; 2385 case st_Proc: return "Proc,"; 2386 case st_Block: return "Block,"; 2387 case st_End: return "End,"; 2388 case st_Member: return "Member,"; 2389 case st_Typedef: return "Typedef,"; 2390 case st_File: return "File,"; 2391 case st_RegReloc: return "RegReloc,"; 2392 case st_Forward: return "Forward,"; 2393 case st_StaticProc: return "StaticProc,"; 2394 case st_Constant: return "Constant,"; 2395 case st_Str: return "String,"; 2396 case st_Number: return "Number,"; 2397 case st_Expr: return "Expr,"; 2398 case st_Type: return "Type,"; 2399 case st_Max: return "Max,"; 2400 } 2401 2402 return "???,"; 2403} 2404 2405#endif /* DEBUG */ 2406 2407/* Parse .begin directives which have a label as the first argument 2408 which gives the location of the start of the block. */ 2409 2410void 2411ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED) 2412{ 2413 char *name; 2414 char name_end; 2415 2416 if (cur_file_ptr == (efdr_t *) NULL) 2417 { 2418 as_warn (_(".begin directive without a preceding .file directive")); 2419 demand_empty_rest_of_line (); 2420 return; 2421 } 2422 2423 if (cur_proc_ptr == (proc_t *) NULL) 2424 { 2425 as_warn (_(".begin directive without a preceding .ent directive")); 2426 demand_empty_rest_of_line (); 2427 return; 2428 } 2429 2430 name = input_line_pointer; 2431 name_end = get_symbol_end (); 2432 2433 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text, 2434 symbol_find_or_make (name), 2435 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2436 2437 *input_line_pointer = name_end; 2438 2439 /* The line number follows, but we don't use it. */ 2440 (void) get_absolute_expression (); 2441 demand_empty_rest_of_line (); 2442} 2443 2444/* Parse .bend directives which have a label as the first argument 2445 which gives the location of the end of the block. */ 2446 2447void 2448ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED) 2449{ 2450 char *name; 2451 char name_end; 2452 symbolS *endsym; 2453 2454 if (cur_file_ptr == (efdr_t *) NULL) 2455 { 2456 as_warn (_(".bend directive without a preceding .file directive")); 2457 demand_empty_rest_of_line (); 2458 return; 2459 } 2460 2461 if (cur_proc_ptr == (proc_t *) NULL) 2462 { 2463 as_warn (_(".bend directive without a preceding .ent directive")); 2464 demand_empty_rest_of_line (); 2465 return; 2466 } 2467 2468 name = input_line_pointer; 2469 name_end = get_symbol_end (); 2470 2471 /* The value is the distance between the .bend directive and the 2472 corresponding symbol. We fill in the offset when we write out 2473 the symbol. */ 2474 endsym = symbol_find (name); 2475 if (endsym == (symbolS *) NULL) 2476 as_warn (_(".bend directive names unknown symbol")); 2477 else 2478 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym, 2479 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2480 2481 *input_line_pointer = name_end; 2482 2483 /* The line number follows, but we don't use it. */ 2484 (void) get_absolute_expression (); 2485 demand_empty_rest_of_line (); 2486} 2487 2488/* COFF debugging information is provided as a series of directives 2489 (.def, .scl, etc.). We build up information as we read the 2490 directives in the following static variables, and file it away when 2491 we reach the .endef directive. */ 2492static char *coff_sym_name; 2493static type_info_t coff_type; 2494static sc_t coff_storage_class; 2495static st_t coff_symbol_typ; 2496static int coff_is_function; 2497static char *coff_tag; 2498static valueT coff_value; 2499static symbolS *coff_sym_value; 2500static bfd_vma coff_sym_addend; 2501static int coff_inside_enumeration; 2502 2503/* Handle a .def directive: start defining a symbol. */ 2504 2505void 2506ecoff_directive_def (int ignore ATTRIBUTE_UNUSED) 2507{ 2508 char *name; 2509 char name_end; 2510 2511 ecoff_debugging_seen = 1; 2512 2513 SKIP_WHITESPACE (); 2514 2515 name = input_line_pointer; 2516 name_end = get_symbol_end (); 2517 2518 if (coff_sym_name != (char *) NULL) 2519 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored")); 2520 else if (*name == '\0') 2521 as_warn (_("empty symbol name in .def; ignored")); 2522 else 2523 { 2524 if (coff_sym_name != (char *) NULL) 2525 free (coff_sym_name); 2526 if (coff_tag != (char *) NULL) 2527 free (coff_tag); 2528 2529 coff_sym_name = xstrdup (name); 2530 coff_type = type_info_init; 2531 coff_storage_class = sc_Nil; 2532 coff_symbol_typ = st_Nil; 2533 coff_is_function = 0; 2534 coff_tag = (char *) NULL; 2535 coff_value = 0; 2536 coff_sym_value = (symbolS *) NULL; 2537 coff_sym_addend = 0; 2538 } 2539 2540 *input_line_pointer = name_end; 2541 2542 demand_empty_rest_of_line (); 2543} 2544 2545/* Handle a .dim directive, used to give dimensions for an array. The 2546 arguments are comma separated numbers. mips-tfile assumes that 2547 there will not be more than 6 dimensions, and gdb won't read any 2548 more than that anyhow, so I will also make that assumption. */ 2549 2550void 2551ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED) 2552{ 2553 int dimens[N_TQ]; 2554 int i; 2555 2556 if (coff_sym_name == (char *) NULL) 2557 { 2558 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored")); 2559 demand_empty_rest_of_line (); 2560 return; 2561 } 2562 2563 for (i = 0; i < N_TQ; i++) 2564 { 2565 SKIP_WHITESPACE (); 2566 dimens[i] = get_absolute_expression (); 2567 if (*input_line_pointer == ',') 2568 ++input_line_pointer; 2569 else 2570 { 2571 if (*input_line_pointer != '\n' 2572 && *input_line_pointer != ';') 2573 as_warn (_("badly formed .dim directive")); 2574 break; 2575 } 2576 } 2577 2578 if (i == N_TQ) 2579 --i; 2580 2581 /* The dimensions are stored away in reverse order. */ 2582 for (; i >= 0; i--) 2583 { 2584 if (coff_type.num_dims >= N_TQ) 2585 { 2586 as_warn (_("too many .dim entries")); 2587 break; 2588 } 2589 coff_type.dimensions[coff_type.num_dims] = dimens[i]; 2590 ++coff_type.num_dims; 2591 } 2592 2593 demand_empty_rest_of_line (); 2594} 2595 2596/* Handle a .scl directive, which sets the COFF storage class of the 2597 symbol. */ 2598 2599void 2600ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED) 2601{ 2602 long val; 2603 2604 if (coff_sym_name == (char *) NULL) 2605 { 2606 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored")); 2607 demand_empty_rest_of_line (); 2608 return; 2609 } 2610 2611 val = get_absolute_expression (); 2612 2613 coff_symbol_typ = map_coff_sym_type[val]; 2614 coff_storage_class = map_coff_storage[val]; 2615 2616 demand_empty_rest_of_line (); 2617} 2618 2619/* Handle a .size directive. For some reason mips-tfile.c thinks that 2620 .size can have multiple arguments. We humor it, although gcc will 2621 never generate more than one argument. */ 2622 2623void 2624ecoff_directive_size (int ignore ATTRIBUTE_UNUSED) 2625{ 2626 int sizes[N_TQ]; 2627 int i; 2628 2629 if (coff_sym_name == (char *) NULL) 2630 { 2631 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored")); 2632 demand_empty_rest_of_line (); 2633 return; 2634 } 2635 2636 for (i = 0; i < N_TQ; i++) 2637 { 2638 SKIP_WHITESPACE (); 2639 sizes[i] = get_absolute_expression (); 2640 if (*input_line_pointer == ',') 2641 ++input_line_pointer; 2642 else 2643 { 2644 if (*input_line_pointer != '\n' 2645 && *input_line_pointer != ';') 2646 as_warn (_("badly formed .size directive")); 2647 break; 2648 } 2649 } 2650 2651 if (i == N_TQ) 2652 --i; 2653 2654 /* The sizes are stored away in reverse order. */ 2655 for (; i >= 0; i--) 2656 { 2657 if (coff_type.num_sizes >= N_TQ) 2658 { 2659 as_warn (_("too many .size entries")); 2660 break; 2661 } 2662 coff_type.sizes[coff_type.num_sizes] = sizes[i]; 2663 ++coff_type.num_sizes; 2664 } 2665 2666 demand_empty_rest_of_line (); 2667} 2668 2669/* Handle the .type directive, which gives the COFF type of the 2670 symbol. */ 2671 2672void 2673ecoff_directive_type (int ignore ATTRIBUTE_UNUSED) 2674{ 2675 long val; 2676 tq_t *tq_ptr; 2677 tq_t *tq_shft; 2678 2679 if (coff_sym_name == (char *) NULL) 2680 { 2681 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored")); 2682 demand_empty_rest_of_line (); 2683 return; 2684 } 2685 2686 val = get_absolute_expression (); 2687 2688 coff_type.orig_type = BTYPE (val); 2689 coff_type.basic_type = map_coff_types[coff_type.orig_type]; 2690 2691 tq_ptr = &coff_type.type_qualifiers[N_TQ]; 2692 while (val & ~N_BTMASK) 2693 { 2694 if (tq_ptr == &coff_type.type_qualifiers[0]) 2695 { 2696 /* FIXME: We could handle this by setting the continued bit. 2697 There would still be a limit: the .type argument can not 2698 be infinite. */ 2699 as_warn (_("the type of %s is too complex; it will be simplified"), 2700 coff_sym_name); 2701 break; 2702 } 2703 if (ISPTR (val)) 2704 *--tq_ptr = tq_Ptr; 2705 else if (ISFCN (val)) 2706 *--tq_ptr = tq_Proc; 2707 else if (ISARY (val)) 2708 *--tq_ptr = tq_Array; 2709 else 2710 as_fatal (_("Unrecognized .type argument")); 2711 2712 val = DECREF (val); 2713 } 2714 2715 tq_shft = &coff_type.type_qualifiers[0]; 2716 while (tq_ptr != &coff_type.type_qualifiers[N_TQ]) 2717 *tq_shft++ = *tq_ptr++; 2718 2719 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc) 2720 { 2721 /* If this is a function, ignore it, so that we don't get two 2722 entries (one from the .ent, and one for the .def that 2723 precedes it). Save the type information so that the end 2724 block can properly add it after the begin block index. For 2725 MIPS knows what reason, we must strip off the function type 2726 at this point. */ 2727 coff_is_function = 1; 2728 tq_shft[-1] = tq_Nil; 2729 } 2730 2731 while (tq_shft != &coff_type.type_qualifiers[N_TQ]) 2732 *tq_shft++ = tq_Nil; 2733 2734 demand_empty_rest_of_line (); 2735} 2736 2737/* Handle the .tag directive, which gives the name of a structure, 2738 union or enum. */ 2739 2740void 2741ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED) 2742{ 2743 char *name; 2744 char name_end; 2745 2746 if (coff_sym_name == (char *) NULL) 2747 { 2748 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored")); 2749 demand_empty_rest_of_line (); 2750 return; 2751 } 2752 2753 name = input_line_pointer; 2754 name_end = get_symbol_end (); 2755 2756 coff_tag = xstrdup (name); 2757 2758 *input_line_pointer = name_end; 2759 2760 demand_empty_rest_of_line (); 2761} 2762 2763/* Handle the .val directive, which gives the value of the symbol. It 2764 may be the name of a static or global symbol. */ 2765 2766void 2767ecoff_directive_val (int ignore ATTRIBUTE_UNUSED) 2768{ 2769 expressionS exp; 2770 2771 if (coff_sym_name == (char *) NULL) 2772 { 2773 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored")); 2774 demand_empty_rest_of_line (); 2775 return; 2776 } 2777 2778 expression (&exp); 2779 if (exp.X_op != O_constant && exp.X_op != O_symbol) 2780 { 2781 as_bad (_(".val expression is too complex")); 2782 demand_empty_rest_of_line (); 2783 return; 2784 } 2785 2786 if (exp.X_op == O_constant) 2787 coff_value = exp.X_add_number; 2788 else 2789 { 2790 coff_sym_value = exp.X_add_symbol; 2791 coff_sym_addend = exp.X_add_number; 2792 } 2793 2794 demand_empty_rest_of_line (); 2795} 2796 2797/* Handle the .endef directive, which terminates processing of COFF 2798 debugging information for a symbol. */ 2799 2800void 2801ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED) 2802{ 2803 char *name; 2804 symint_t indx; 2805 localsym_t *sym; 2806 2807 demand_empty_rest_of_line (); 2808 2809 if (coff_sym_name == (char *) NULL) 2810 { 2811 as_warn (_(".endef pseudo-op used before .def; ignored")); 2812 return; 2813 } 2814 2815 name = coff_sym_name; 2816 coff_sym_name = (char *) NULL; 2817 2818 /* If the symbol is a static or external, we have already gotten the 2819 appropriate type and class, so make sure we don't override those 2820 values. This is needed because there are some type and classes 2821 that are not in COFF, such as short data, etc. */ 2822 if (coff_sym_value != (symbolS *) NULL) 2823 { 2824 coff_symbol_typ = st_Nil; 2825 coff_storage_class = sc_Nil; 2826 } 2827 2828 coff_type.extra_sizes = coff_tag != (char *) NULL; 2829 if (coff_type.num_dims > 0) 2830 { 2831 int diff = coff_type.num_dims - coff_type.num_sizes; 2832 int i = coff_type.num_dims - 1; 2833 int j; 2834 2835 if (coff_type.num_sizes != 1 || diff < 0) 2836 { 2837 as_warn (_("bad COFF debugging information")); 2838 return; 2839 } 2840 2841 /* If this is an array, make sure the same number of dimensions 2842 and sizes were passed, creating extra sizes for multiply 2843 dimensioned arrays if not passed. */ 2844 coff_type.extra_sizes = 0; 2845 if (diff) 2846 { 2847 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1; 2848 while (j >= 0) 2849 { 2850 coff_type.sizes[j] = (((j - diff) >= 0) 2851 ? coff_type.sizes[j - diff] 2852 : 0); 2853 j--; 2854 } 2855 2856 coff_type.num_sizes = i + 1; 2857 for (i--; i >= 0; i--) 2858 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0 2859 ? 0 2860 : (coff_type.sizes[i + 1] 2861 / coff_type.dimensions[i + 1])); 2862 } 2863 } 2864 else if (coff_symbol_typ == st_Member 2865 && coff_type.num_sizes - coff_type.extra_sizes == 1) 2866 { 2867 /* Is this a bitfield? This is indicated by a structure member 2868 having a size field that isn't an array. */ 2869 coff_type.bitfield = 1; 2870 } 2871 2872 /* Except for enumeration members & begin/ending of scopes, put the 2873 type word in the aux. symbol table. */ 2874 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End) 2875 indx = 0; 2876 else if (coff_inside_enumeration) 2877 indx = cur_file_ptr->void_type; 2878 else 2879 { 2880 if (coff_type.basic_type == bt_Struct 2881 || coff_type.basic_type == bt_Union 2882 || coff_type.basic_type == bt_Enum) 2883 { 2884 if (coff_tag == (char *) NULL) 2885 { 2886 as_warn (_("no tag specified for %s"), name); 2887 return; 2888 } 2889 2890 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL, 2891 coff_type.basic_type); 2892 } 2893 2894 if (coff_is_function) 2895 { 2896 last_func_type_info = coff_type; 2897 last_func_sym_value = coff_sym_value; 2898 return; 2899 } 2900 2901 indx = add_aux_sym_tir (&coff_type, 2902 hash_yes, 2903 &cur_file_ptr->thash_head[0]); 2904 } 2905 2906 /* Do any last minute adjustments that are necessary. */ 2907 switch (coff_symbol_typ) 2908 { 2909 default: 2910 break; 2911 2912 /* For the beginning of structs, unions, and enumerations, the 2913 size info needs to be passed in the value field. */ 2914 case st_Block: 2915 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes 2916 != 1) 2917 { 2918 as_warn (_("bad COFF debugging information")); 2919 return; 2920 } 2921 else 2922 coff_value = coff_type.sizes[0]; 2923 2924 coff_inside_enumeration = (coff_type.orig_type == T_ENUM); 2925 break; 2926 2927 /* For the end of structs, unions, and enumerations, omit the 2928 name which is always ".eos". This needs to be done last, so 2929 that any error reporting above gives the correct name. */ 2930 case st_End: 2931 free (name); 2932 name = (char *) NULL; 2933 coff_value = 0; 2934 coff_inside_enumeration = 0; 2935 break; 2936 2937 /* Members of structures and unions that aren't bitfields, need 2938 to adjust the value from a byte offset to a bit offset. 2939 Members of enumerations do not have the value adjusted, and 2940 can be distinguished by indx == indexNil. For enumerations, 2941 update the maximum enumeration value. */ 2942 case st_Member: 2943 if (! coff_type.bitfield && ! coff_inside_enumeration) 2944 coff_value *= 8; 2945 2946 break; 2947 } 2948 2949 /* Add the symbol. */ 2950 sym = add_ecoff_symbol (name, 2951 coff_symbol_typ, 2952 coff_storage_class, 2953 coff_sym_value, 2954 coff_sym_addend, 2955 (symint_t) coff_value, 2956 indx); 2957 2958 /* deal with struct, union, and enum tags. */ 2959 if (coff_symbol_typ == st_Block) 2960 { 2961 /* Create or update the tag information. */ 2962 tag_t *tag_ptr = get_tag (name, 2963 sym, 2964 coff_type.basic_type); 2965 forward_t **pf; 2966 2967 /* Remember any forward references. */ 2968 for (pf = &sym->forward_ref; 2969 *pf != (forward_t *) NULL; 2970 pf = &(*pf)->next) 2971 ; 2972 *pf = tag_ptr->forward_ref; 2973 tag_ptr->forward_ref = (forward_t *) NULL; 2974 } 2975} 2976 2977/* Parse .end directives. */ 2978 2979void 2980ecoff_directive_end (int ignore ATTRIBUTE_UNUSED) 2981{ 2982 char *name; 2983 char name_end; 2984 symbolS *ent; 2985 2986 if (cur_file_ptr == (efdr_t *) NULL) 2987 { 2988 as_warn (_(".end directive without a preceding .file directive")); 2989 demand_empty_rest_of_line (); 2990 return; 2991 } 2992 2993 if (cur_proc_ptr == (proc_t *) NULL) 2994 { 2995 as_warn (_(".end directive without a preceding .ent directive")); 2996 demand_empty_rest_of_line (); 2997 return; 2998 } 2999 3000 name = input_line_pointer; 3001 name_end = get_symbol_end (); 3002 3003 if (name == input_line_pointer) 3004 { 3005 as_warn (_(".end directive has no name")); 3006 *input_line_pointer = name_end; 3007 demand_empty_rest_of_line (); 3008 return; 3009 } 3010 3011 /* The value is the distance between the .end directive and the 3012 corresponding symbol. We create a fake symbol to hold the 3013 current location, and put in the offset when we write out the 3014 symbol. */ 3015 ent = symbol_find (name); 3016 if (ent == (symbolS *) NULL) 3017 as_warn (_(".end directive names unknown symbol")); 3018 else 3019 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, 3020 symbol_new ("L0\001", now_seg, 3021 (valueT) frag_now_fix (), 3022 frag_now), 3023 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 3024 3025 cur_proc_ptr = (proc_t *) NULL; 3026 3027 *input_line_pointer = name_end; 3028 demand_empty_rest_of_line (); 3029} 3030 3031/* Parse .ent directives. */ 3032 3033void 3034ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED) 3035{ 3036 char *name; 3037 char name_end; 3038 3039 if (cur_file_ptr == (efdr_t *) NULL) 3040 add_file ((const char *) NULL, 0, 1); 3041 3042 if (cur_proc_ptr != (proc_t *) NULL) 3043 { 3044 as_warn (_("second .ent directive found before .end directive")); 3045 demand_empty_rest_of_line (); 3046 return; 3047 } 3048 3049 name = input_line_pointer; 3050 name_end = get_symbol_end (); 3051 3052 if (name == input_line_pointer) 3053 { 3054 as_warn (_(".ent directive has no name")); 3055 *input_line_pointer = name_end; 3056 demand_empty_rest_of_line (); 3057 return; 3058 } 3059 3060 add_procedure (name); 3061 3062 *input_line_pointer = name_end; 3063 3064 /* The .ent directive is sometimes followed by a number. I'm not 3065 really sure what the number means. I don't see any way to store 3066 the information in the PDR. The Irix 4 assembler seems to ignore 3067 the information. */ 3068 SKIP_WHITESPACE (); 3069 if (*input_line_pointer == ',') 3070 { 3071 ++input_line_pointer; 3072 SKIP_WHITESPACE (); 3073 } 3074 if (ISDIGIT (*input_line_pointer) 3075 || *input_line_pointer == '-') 3076 (void) get_absolute_expression (); 3077 3078 demand_empty_rest_of_line (); 3079} 3080 3081/* Parse .extern directives. */ 3082 3083void 3084ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED) 3085{ 3086 char *name; 3087 int c; 3088 symbolS *symbolp; 3089 valueT size; 3090 3091 name = input_line_pointer; 3092 c = get_symbol_end (); 3093 symbolp = symbol_find_or_make (name); 3094 *input_line_pointer = c; 3095 3096 S_SET_EXTERNAL (symbolp); 3097 3098 if (*input_line_pointer == ',') 3099 ++input_line_pointer; 3100 size = get_absolute_expression (); 3101 3102 symbol_get_obj (symbolp)->ecoff_extern_size = size; 3103} 3104 3105/* Parse .file directives. */ 3106 3107void 3108ecoff_directive_file (int ignore ATTRIBUTE_UNUSED) 3109{ 3110 int indx; 3111 char *name; 3112 int len; 3113 3114 if (cur_proc_ptr != (proc_t *) NULL) 3115 { 3116 as_warn (_("no way to handle .file within .ent/.end section")); 3117 demand_empty_rest_of_line (); 3118 return; 3119 } 3120 3121 indx = (int) get_absolute_expression (); 3122 3123 /* FIXME: we don't have to save the name here. */ 3124 name = demand_copy_C_string (&len); 3125 3126 add_file (name, indx - 1, 0); 3127 3128 demand_empty_rest_of_line (); 3129} 3130 3131/* Parse .fmask directives. */ 3132 3133void 3134ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED) 3135{ 3136 long val; 3137 3138 if (cur_proc_ptr == (proc_t *) NULL) 3139 { 3140 as_warn (_(".fmask outside of .ent")); 3141 demand_empty_rest_of_line (); 3142 return; 3143 } 3144 3145 if (get_absolute_expression_and_terminator (&val) != ',') 3146 { 3147 as_warn (_("bad .fmask directive")); 3148 --input_line_pointer; 3149 demand_empty_rest_of_line (); 3150 return; 3151 } 3152 3153 cur_proc_ptr->pdr.fregmask = val; 3154 cur_proc_ptr->pdr.fregoffset = get_absolute_expression (); 3155 3156 demand_empty_rest_of_line (); 3157} 3158 3159/* Parse .frame directives. */ 3160 3161void 3162ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED) 3163{ 3164 long val; 3165 3166 if (cur_proc_ptr == (proc_t *) NULL) 3167 { 3168 as_warn (_(".frame outside of .ent")); 3169 demand_empty_rest_of_line (); 3170 return; 3171 } 3172 3173 cur_proc_ptr->pdr.framereg = tc_get_register (1); 3174 3175 SKIP_WHITESPACE (); 3176 if (*input_line_pointer++ != ',' 3177 || get_absolute_expression_and_terminator (&val) != ',') 3178 { 3179 as_warn (_("bad .frame directive")); 3180 --input_line_pointer; 3181 demand_empty_rest_of_line (); 3182 return; 3183 } 3184 3185 cur_proc_ptr->pdr.frameoffset = val; 3186 3187 cur_proc_ptr->pdr.pcreg = tc_get_register (0); 3188 3189 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to 3190 Sandro. I don't yet know where this value should be stored, if 3191 anywhere. Don't call demand_empty_rest_of_line (). */ 3192 s_ignore (42); 3193} 3194 3195/* Parse .mask directives. */ 3196 3197void 3198ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED) 3199{ 3200 long val; 3201 3202 if (cur_proc_ptr == (proc_t *) NULL) 3203 { 3204 as_warn (_(".mask outside of .ent")); 3205 demand_empty_rest_of_line (); 3206 return; 3207 } 3208 3209 if (get_absolute_expression_and_terminator (&val) != ',') 3210 { 3211 as_warn (_("bad .mask directive")); 3212 --input_line_pointer; 3213 demand_empty_rest_of_line (); 3214 return; 3215 } 3216 3217 cur_proc_ptr->pdr.regmask = val; 3218 cur_proc_ptr->pdr.regoffset = get_absolute_expression (); 3219 3220 demand_empty_rest_of_line (); 3221} 3222 3223/* Parse .loc directives. */ 3224 3225void 3226ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED) 3227{ 3228 lineno_list_t *list; 3229 symint_t lineno; 3230 3231 if (cur_file_ptr == (efdr_t *) NULL) 3232 { 3233 as_warn (_(".loc before .file")); 3234 demand_empty_rest_of_line (); 3235 return; 3236 } 3237 3238 if (now_seg != text_section) 3239 { 3240 as_warn (_(".loc outside of .text")); 3241 demand_empty_rest_of_line (); 3242 return; 3243 } 3244 3245 /* Skip the file number. */ 3246 SKIP_WHITESPACE (); 3247 get_absolute_expression (); 3248 SKIP_WHITESPACE (); 3249 3250 lineno = get_absolute_expression (); 3251 3252#ifndef NO_LISTING 3253 if (listing) 3254 listing_source_line (lineno); 3255#endif 3256 3257 /* If we're building stabs, then output a special label rather than 3258 ECOFF line number info. */ 3259 if (stabs_seen) 3260 { 3261 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text, 3262 symbol_new ("L0\001", now_seg, 3263 (valueT) frag_now_fix (), 3264 frag_now), 3265 (bfd_vma) 0, 0, lineno); 3266 return; 3267 } 3268 3269 list = allocate_lineno_list (); 3270 3271 list->next = (lineno_list_t *) NULL; 3272 list->file = cur_file_ptr; 3273 list->proc = cur_proc_ptr; 3274 list->frag = frag_now; 3275 list->paddr = frag_now_fix (); 3276 list->lineno = lineno; 3277 3278 /* We don't want to merge files which have line numbers. */ 3279 cur_file_ptr->fdr.fMerge = 0; 3280 3281 /* A .loc directive will sometimes appear before a .ent directive, 3282 which means that cur_proc_ptr will be NULL here. Arrange to 3283 patch this up. */ 3284 if (cur_proc_ptr == (proc_t *) NULL) 3285 { 3286 lineno_list_t **pl; 3287 3288 pl = &noproc_lineno; 3289 while (*pl != (lineno_list_t *) NULL) 3290 pl = &(*pl)->next; 3291 *pl = list; 3292 } 3293 else 3294 { 3295 last_lineno = list; 3296 *last_lineno_ptr = list; 3297 last_lineno_ptr = &list->next; 3298 } 3299} 3300 3301/* The MIPS assembler sometimes inserts nop instructions in the 3302 instruction stream. When this happens, we must patch up the .loc 3303 information so that it points to the instruction after the nop. */ 3304 3305void 3306ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset) 3307{ 3308 if (last_lineno != NULL 3309 && last_lineno->frag == old_frag 3310 && last_lineno->paddr == old_frag_offset) 3311 { 3312 last_lineno->frag = frag_now; 3313 last_lineno->paddr = frag_now_fix (); 3314 } 3315} 3316 3317/* Make sure the @stabs symbol is emitted. */ 3318 3319static void 3320mark_stabs (int ignore ATTRIBUTE_UNUSED) 3321{ 3322 if (! stabs_seen) 3323 { 3324 /* Add a dummy @stabs dymbol. */ 3325 stabs_seen = 1; 3326 (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo, 3327 (symbolS *) NULL, 3328 (bfd_vma) 0, (symint_t) -1, 3329 ECOFF_MARK_STAB (0)); 3330 } 3331} 3332 3333/* Parse .weakext directives. */ 3334#ifndef TC_MIPS 3335/* For TC_MIPS use the version in tc-mips.c. */ 3336void 3337ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED) 3338{ 3339 char *name; 3340 int c; 3341 symbolS *symbolP; 3342 expressionS exp; 3343 3344 name = input_line_pointer; 3345 c = get_symbol_end (); 3346 symbolP = symbol_find_or_make (name); 3347 *input_line_pointer = c; 3348 3349 SKIP_WHITESPACE (); 3350 3351 if (*input_line_pointer == ',') 3352 { 3353 if (S_IS_DEFINED (symbolP)) 3354 { 3355 as_bad (_("symbol `%s' is already defined"), 3356 S_GET_NAME (symbolP)); 3357 ignore_rest_of_line (); 3358 return; 3359 } 3360 3361 ++input_line_pointer; 3362 SKIP_WHITESPACE (); 3363 if (! is_end_of_line[(unsigned char) *input_line_pointer]) 3364 { 3365 expression (&exp); 3366 if (exp.X_op != O_symbol) 3367 { 3368 as_bad (_("bad .weakext directive")); 3369 ignore_rest_of_line (); 3370 return; 3371 } 3372 symbol_set_value_expression (symbolP, &exp); 3373 } 3374 } 3375 3376 S_SET_WEAK (symbolP); 3377 3378 demand_empty_rest_of_line (); 3379} 3380#endif /* not TC_MIPS */ 3381 3382/* Handle .stabs directives. The actual parsing routine is done by a 3383 generic routine. This routine is called via OBJ_PROCESS_STAB. 3384 When this is called, input_line_pointer will be pointing at the 3385 value field of the stab. 3386 3387 .stabs directives have five fields: 3388 "string" a string, encoding the type information. 3389 code a numeric code, defined in <stab.h> 3390 0 a zero 3391 desc a zero or line number 3392 value a numeric value or an address. 3393 3394 If the value is relocatable, we transform this into: 3395 iss points as an index into string space 3396 value value from lookup of the name 3397 st st from lookup of the name 3398 sc sc from lookup of the name 3399 index code|CODE_MASK 3400 3401 If the value is not relocatable, we transform this into: 3402 iss points as an index into string space 3403 value value 3404 st st_Nil 3405 sc sc_Nil 3406 index code|CODE_MASK 3407 3408 .stabn directives have four fields (string is null): 3409 code a numeric code, defined in <stab.h> 3410 0 a zero 3411 desc a zero or a line number 3412 value a numeric value or an address. */ 3413 3414void 3415ecoff_stab (segT sec ATTRIBUTE_UNUSED, 3416 int what, 3417 const char *string, 3418 int type, 3419 int other, 3420 int desc) 3421{ 3422 efdr_t *save_file_ptr = cur_file_ptr; 3423 symbolS *sym; 3424 symint_t value; 3425 bfd_vma addend; 3426 st_t st; 3427 sc_t sc; 3428 symint_t indx; 3429 localsym_t *hold = NULL; 3430 3431 ecoff_debugging_seen = 1; 3432 3433 /* We don't handle .stabd. */ 3434 if (what != 's' && what != 'n') 3435 { 3436 as_bad (_(".stab%c is not supported"), what); 3437 return; 3438 } 3439 3440 /* A .stabn uses a null name, not an empty string. */ 3441 if (what == 'n') 3442 string = NULL; 3443 3444 /* We ignore the other field. */ 3445 if (other != 0) 3446 as_warn (_(".stab%c: ignoring non-zero other field"), what); 3447 3448 /* Make sure we have a current file. */ 3449 if (cur_file_ptr == (efdr_t *) NULL) 3450 { 3451 add_file ((const char *) NULL, 0, 1); 3452 save_file_ptr = cur_file_ptr; 3453 } 3454 3455 /* For stabs in ECOFF, the first symbol must be @stabs. This is a 3456 signal to gdb. */ 3457 if (stabs_seen == 0) 3458 mark_stabs (0); 3459 3460 /* Line number stabs are handled differently, since they have two 3461 values, the line number and the address of the label. We use the 3462 index field (aka desc) to hold the line number, and the value 3463 field to hold the address. The symbol type is st_Label, which 3464 should be different from the other stabs, so that gdb can 3465 recognize it. */ 3466 if (type == N_SLINE) 3467 { 3468 SYMR dummy_symr; 3469 char *name; 3470 char name_end; 3471 3472#ifndef NO_LISTING 3473 if (listing) 3474 listing_source_line ((unsigned int) desc); 3475#endif 3476 3477 dummy_symr.index = desc; 3478 if (dummy_symr.index != desc) 3479 { 3480 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"), 3481 desc, what); 3482 return; 3483 } 3484 3485 name = input_line_pointer; 3486 name_end = get_symbol_end (); 3487 3488 sym = symbol_find_or_make (name); 3489 *input_line_pointer = name_end; 3490 3491 value = 0; 3492 addend = 0; 3493 st = st_Label; 3494 sc = sc_Text; 3495 indx = desc; 3496 } 3497 else 3498 { 3499#ifndef NO_LISTING 3500 if (listing && (type == N_SO || type == N_SOL)) 3501 listing_source_file (string); 3502#endif 3503 3504 if (ISDIGIT (*input_line_pointer) 3505 || *input_line_pointer == '-' 3506 || *input_line_pointer == '+') 3507 { 3508 st = st_Nil; 3509 sc = sc_Nil; 3510 sym = (symbolS *) NULL; 3511 value = get_absolute_expression (); 3512 addend = 0; 3513 } 3514 else if (! is_name_beginner ((unsigned char) *input_line_pointer)) 3515 { 3516 as_warn (_("illegal .stab%c directive, bad character"), what); 3517 return; 3518 } 3519 else 3520 { 3521 expressionS exp; 3522 3523 sc = sc_Nil; 3524 st = st_Nil; 3525 3526 expression (&exp); 3527 if (exp.X_op == O_constant) 3528 { 3529 sym = NULL; 3530 value = exp.X_add_number; 3531 addend = 0; 3532 } 3533 else if (exp.X_op == O_symbol) 3534 { 3535 sym = exp.X_add_symbol; 3536 value = 0; 3537 addend = exp.X_add_number; 3538 } 3539 else 3540 { 3541 sym = make_expr_symbol (&exp); 3542 value = 0; 3543 addend = 0; 3544 } 3545 } 3546 3547 indx = ECOFF_MARK_STAB (type); 3548 } 3549 3550 /* Don't store the stabs symbol we are creating as the type of the 3551 ECOFF symbol. We want to compute the type of the ECOFF symbol 3552 independently. */ 3553 if (sym != (symbolS *) NULL) 3554 hold = symbol_get_obj (sym)->ecoff_symbol; 3555 3556 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx); 3557 3558 if (sym != (symbolS *) NULL) 3559 symbol_get_obj (sym)->ecoff_symbol = hold; 3560 3561 /* Restore normal file type. */ 3562 cur_file_ptr = save_file_ptr; 3563} 3564 3565/* Frob an ECOFF symbol. Small common symbols go into a special 3566 .scommon section rather than bfd_com_section. */ 3567 3568void 3569ecoff_frob_symbol (symbolS *sym) 3570{ 3571 if (S_IS_COMMON (sym) 3572 && S_GET_VALUE (sym) > 0 3573 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput)) 3574 { 3575 static asection scom_section; 3576 static asymbol scom_symbol; 3577 3578 /* We must construct a fake section similar to bfd_com_section 3579 but with the name .scommon. */ 3580 if (scom_section.name == NULL) 3581 { 3582 scom_section = bfd_com_section; 3583 scom_section.name = ".scommon"; 3584 scom_section.output_section = &scom_section; 3585 scom_section.symbol = &scom_symbol; 3586 scom_section.symbol_ptr_ptr = &scom_section.symbol; 3587 scom_symbol = *bfd_com_section.symbol; 3588 scom_symbol.name = ".scommon"; 3589 scom_symbol.section = &scom_section; 3590 } 3591 S_SET_SEGMENT (sym, &scom_section); 3592 } 3593 3594 /* Double check weak symbols. */ 3595 if (S_IS_WEAK (sym)) 3596 { 3597 if (S_IS_COMMON (sym)) 3598 as_bad (_("symbol `%s' can not be both weak and common"), 3599 S_GET_NAME (sym)); 3600 } 3601} 3602 3603/* Add bytes to the symbolic information buffer. */ 3604 3605static char * 3606ecoff_add_bytes (char **buf, 3607 char **bufend, 3608 char *bufptr, 3609 unsigned long need) 3610{ 3611 unsigned long at; 3612 unsigned long want; 3613 3614 at = bufptr - *buf; 3615 need -= *bufend - bufptr; 3616 if (need < PAGE_SIZE) 3617 need = PAGE_SIZE; 3618 want = (*bufend - *buf) + need; 3619 *buf = xrealloc (*buf, want); 3620 *bufend = *buf + want; 3621 return *buf + at; 3622} 3623 3624/* Adjust the symbolic information buffer to the alignment required 3625 for the ECOFF target debugging information. */ 3626 3627static unsigned long 3628ecoff_padding_adjust (const struct ecoff_debug_swap *backend, 3629 char **buf, 3630 char **bufend, 3631 unsigned long offset, 3632 char **bufptrptr) 3633{ 3634 bfd_size_type align; 3635 3636 align = backend->debug_align; 3637 if ((offset & (align - 1)) != 0) 3638 { 3639 unsigned long add; 3640 3641 add = align - (offset & (align - 1)); 3642 if ((unsigned long) (*bufend - (*buf + offset)) < add) 3643 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add); 3644 memset (*buf + offset, 0, add); 3645 offset += add; 3646 if (bufptrptr != (char **) NULL) 3647 *bufptrptr = *buf + offset; 3648 } 3649 3650 return offset; 3651} 3652 3653/* Build the line number information. */ 3654 3655static unsigned long 3656ecoff_build_lineno (const struct ecoff_debug_swap *backend, 3657 char **buf, 3658 char **bufend, 3659 unsigned long offset, 3660 long *linecntptr) 3661{ 3662 char *bufptr; 3663 register lineno_list_t *l; 3664 lineno_list_t *last; 3665 efdr_t *file; 3666 proc_t *proc; 3667 unsigned long c; 3668 long iline; 3669 long totcount; 3670 lineno_list_t first; 3671 lineno_list_t *local_first_lineno = first_lineno; 3672 3673 if (linecntptr != (long *) NULL) 3674 *linecntptr = 0; 3675 3676 bufptr = *buf + offset; 3677 3678 file = (efdr_t *) NULL; 3679 proc = (proc_t *) NULL; 3680 last = (lineno_list_t *) NULL; 3681 c = offset; 3682 iline = 0; 3683 totcount = 0; 3684 3685 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to 3686 remove this code. */ 3687 /* For some reason the address of the first procedure is ignored 3688 when reading line numbers. This doesn't matter if the address of 3689 the first procedure is 0, but when gcc is generating MIPS 3690 embedded PIC code, it will put strings in the .text section 3691 before the first procedure. We cope by inserting a dummy line if 3692 the address of the first procedure is not 0. Hopefully this 3693 won't screw things up too badly. 3694 3695 Don't do this for ECOFF assembly source line numbers. They work 3696 without this extra attention. */ 3697 if (debug_type != DEBUG_ECOFF 3698 && first_proc_ptr != (proc_t *) NULL 3699 && local_first_lineno != (lineno_list_t *) NULL 3700 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym) 3701 + bfd_get_section_vma (stdoutput, 3702 S_GET_SEGMENT (first_proc_ptr->sym->as_sym))) 3703 != 0)) 3704 { 3705 first.file = local_first_lineno->file; 3706 first.proc = local_first_lineno->proc; 3707 first.frag = &zero_address_frag; 3708 first.paddr = 0; 3709 first.lineno = 0; 3710 3711 first.next = local_first_lineno; 3712 local_first_lineno = &first; 3713 } 3714 3715 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next) 3716 { 3717 long count; 3718 long delta; 3719 3720 /* Get the offset to the memory address of the next line number 3721 (in words). Do this first, so that we can skip ahead to the 3722 next useful line number entry. */ 3723 if (l->next == (lineno_list_t *) NULL) 3724 { 3725 /* We want a count of zero, but it will be decremented 3726 before it is used. */ 3727 count = 1; 3728 } 3729 else if (l->next->frag->fr_address + l->next->paddr 3730 > l->frag->fr_address + l->paddr) 3731 { 3732 count = ((l->next->frag->fr_address + l->next->paddr 3733 - (l->frag->fr_address + l->paddr)) 3734 >> 2); 3735 } 3736 else 3737 { 3738 /* Don't change last, so we still get the right delta. */ 3739 continue; 3740 } 3741 3742 if (l->file != file || l->proc != proc) 3743 { 3744 if (l->proc != proc && proc != (proc_t *) NULL) 3745 proc->pdr.lnHigh = last->lineno; 3746 if (l->file != file && file != (efdr_t *) NULL) 3747 { 3748 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3749 file->fdr.cline = totcount + count; 3750 if (linecntptr != (long *) NULL) 3751 *linecntptr += totcount + count; 3752 totcount = 0; 3753 } 3754 3755 if (l->file != file) 3756 { 3757 efdr_t *last_file = file; 3758 3759 file = l->file; 3760 if (last_file != (efdr_t *) NULL) 3761 file->fdr.ilineBase 3762 = last_file->fdr.ilineBase + last_file->fdr.cline; 3763 else 3764 file->fdr.ilineBase = 0; 3765 file->fdr.cbLineOffset = c; 3766 } 3767 if (l->proc != proc) 3768 { 3769 proc = l->proc; 3770 if (proc != (proc_t *) NULL) 3771 { 3772 proc->pdr.lnLow = l->lineno; 3773 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset; 3774 proc->pdr.iline = totcount; 3775 } 3776 } 3777 3778 last = (lineno_list_t *) NULL; 3779 } 3780 3781 totcount += count; 3782 3783 /* Get the offset to this line number. */ 3784 if (last == (lineno_list_t *) NULL) 3785 delta = 0; 3786 else 3787 delta = l->lineno - last->lineno; 3788 3789 /* Put in the offset to this line number. */ 3790 while (delta != 0) 3791 { 3792 int setcount; 3793 3794 /* 1 is added to each count read. */ 3795 --count; 3796 /* We can only adjust the word count by up to 15 words at a 3797 time. */ 3798 if (count <= 0x0f) 3799 { 3800 setcount = count; 3801 count = 0; 3802 } 3803 else 3804 { 3805 setcount = 0x0f; 3806 count -= 0x0f; 3807 } 3808 if (delta >= -7 && delta <= 7) 3809 { 3810 if (bufptr >= *bufend) 3811 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3812 *bufptr++ = setcount + (delta << 4); 3813 delta = 0; 3814 ++c; 3815 } 3816 else 3817 { 3818 int set; 3819 3820 if (*bufend - bufptr < 3) 3821 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3); 3822 *bufptr++ = setcount + (8 << 4); 3823 if (delta < -0x8000) 3824 { 3825 set = -0x8000; 3826 delta += 0x8000; 3827 } 3828 else if (delta > 0x7fff) 3829 { 3830 set = 0x7fff; 3831 delta -= 0x7fff; 3832 } 3833 else 3834 { 3835 set = delta; 3836 delta = 0; 3837 } 3838 *bufptr++ = set >> 8; 3839 *bufptr++ = set & 0xffff; 3840 c += 3; 3841 } 3842 } 3843 3844 /* Finish adjusting the count. */ 3845 while (count > 0) 3846 { 3847 if (bufptr >= *bufend) 3848 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3849 /* 1 is added to each count read. */ 3850 --count; 3851 if (count > 0x0f) 3852 { 3853 *bufptr++ = 0x0f; 3854 count -= 0x0f; 3855 } 3856 else 3857 { 3858 *bufptr++ = count; 3859 count = 0; 3860 } 3861 ++c; 3862 } 3863 3864 ++iline; 3865 last = l; 3866 } 3867 3868 if (proc != (proc_t *) NULL) 3869 proc->pdr.lnHigh = last->lineno; 3870 if (file != (efdr_t *) NULL) 3871 { 3872 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3873 file->fdr.cline = totcount; 3874 } 3875 3876 if (linecntptr != (long *) NULL) 3877 *linecntptr += totcount; 3878 3879 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr); 3880 3881 return c; 3882} 3883 3884/* Build and swap out the symbols. */ 3885 3886static unsigned long 3887ecoff_build_symbols (const struct ecoff_debug_swap *backend, 3888 char **buf, 3889 char **bufend, 3890 unsigned long offset) 3891{ 3892 const bfd_size_type external_sym_size = backend->external_sym_size; 3893 void (* const swap_sym_out) (bfd *, const SYMR *, PTR) 3894 = backend->swap_sym_out; 3895 char *sym_out; 3896 long isym; 3897 vlinks_t *file_link; 3898 3899 sym_out = *buf + offset; 3900 3901 isym = 0; 3902 3903 /* The symbols are stored by file. */ 3904 for (file_link = file_desc.first; 3905 file_link != (vlinks_t *) NULL; 3906 file_link = file_link->next) 3907 { 3908 int ifilesym; 3909 int fil_cnt; 3910 efdr_t *fil_ptr; 3911 efdr_t *fil_end; 3912 3913 if (file_link->next == (vlinks_t *) NULL) 3914 fil_cnt = file_desc.objects_last_page; 3915 else 3916 fil_cnt = file_desc.objects_per_page; 3917 fil_ptr = file_link->datum->file; 3918 fil_end = fil_ptr + fil_cnt; 3919 for (; fil_ptr < fil_end; fil_ptr++) 3920 { 3921 vlinks_t *sym_link; 3922 3923 fil_ptr->fdr.isymBase = isym; 3924 ifilesym = isym; 3925 for (sym_link = fil_ptr->symbols.first; 3926 sym_link != (vlinks_t *) NULL; 3927 sym_link = sym_link->next) 3928 { 3929 int sym_cnt; 3930 localsym_t *sym_ptr; 3931 localsym_t *sym_end; 3932 3933 if (sym_link->next == (vlinks_t *) NULL) 3934 sym_cnt = fil_ptr->symbols.objects_last_page; 3935 else 3936 sym_cnt = fil_ptr->symbols.objects_per_page; 3937 sym_ptr = sym_link->datum->sym; 3938 sym_end = sym_ptr + sym_cnt; 3939 for (; sym_ptr < sym_end; sym_ptr++) 3940 { 3941 int local; 3942 symbolS *as_sym; 3943 forward_t *f; 3944 3945 know (sym_ptr->file_ptr == fil_ptr); 3946 3947 /* If there is no associated gas symbol, then this 3948 is a pure debugging symbol. We have already 3949 added the name (if any) to fil_ptr->strings. 3950 Otherwise we must decide whether this is an 3951 external or a local symbol (actually, it may be 3952 both if the local provides additional debugging 3953 information for the external). */ 3954 local = 1; 3955 as_sym = sym_ptr->as_sym; 3956 if (as_sym != (symbolS *) NULL) 3957 { 3958 symint_t indx; 3959 3960 /* The value of a block start symbol is the 3961 offset from the start of the procedure. For 3962 other symbols we just use the gas value (but 3963 we must offset it by the vma of the section, 3964 just as BFD does, because BFD will not see 3965 this value). */ 3966 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block 3967 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text) 3968 { 3969 symbolS *begin_sym; 3970 3971 know (sym_ptr->proc_ptr != (proc_t *) NULL); 3972 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 3973 if (S_GET_SEGMENT (as_sym) 3974 != S_GET_SEGMENT (begin_sym)) 3975 as_warn (_(".begin/.bend in different segments")); 3976 sym_ptr->ecoff_sym.asym.value = 3977 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 3978 } 3979 else 3980 sym_ptr->ecoff_sym.asym.value = 3981 (S_GET_VALUE (as_sym) 3982 + bfd_get_section_vma (stdoutput, 3983 S_GET_SEGMENT (as_sym)) 3984 + sym_ptr->addend); 3985 3986 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym); 3987 3988 /* Set st_Proc to st_StaticProc for local 3989 functions. */ 3990 if (sym_ptr->ecoff_sym.asym.st == st_Proc 3991 && S_IS_DEFINED (as_sym) 3992 && ! S_IS_EXTERNAL (as_sym) 3993 && ! S_IS_WEAK (as_sym)) 3994 sym_ptr->ecoff_sym.asym.st = st_StaticProc; 3995 3996 /* Get the type and storage class based on where 3997 the symbol actually wound up. Traditionally, 3998 N_LBRAC and N_RBRAC are *not* relocated. */ 3999 indx = sym_ptr->ecoff_sym.asym.index; 4000 if (sym_ptr->ecoff_sym.asym.st == st_Nil 4001 && sym_ptr->ecoff_sym.asym.sc == sc_Nil 4002 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4003 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC) 4004 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC)))) 4005 { 4006 segT seg; 4007 const char *segname; 4008 st_t st; 4009 sc_t sc; 4010 4011 seg = S_GET_SEGMENT (as_sym); 4012 segname = segment_name (seg); 4013 4014 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym) 4015 && (S_IS_EXTERNAL (as_sym) 4016 || S_IS_WEAK (as_sym) 4017 || ! S_IS_DEFINED (as_sym))) 4018 { 4019 if ((symbol_get_bfdsym (as_sym)->flags 4020 & BSF_FUNCTION) != 0) 4021 st = st_Proc; 4022 else 4023 st = st_Global; 4024 } 4025 else if (seg == text_section) 4026 st = st_Label; 4027 else 4028 st = st_Static; 4029 4030 if (! S_IS_DEFINED (as_sym)) 4031 { 4032 valueT s; 4033 4034 s = symbol_get_obj (as_sym)->ecoff_extern_size; 4035 if (s == 0 4036 || s > bfd_get_gp_size (stdoutput)) 4037 sc = sc_Undefined; 4038 else 4039 { 4040 sc = sc_SUndefined; 4041 sym_ptr->ecoff_sym.asym.value = s; 4042 } 4043#ifdef S_SET_SIZE 4044 S_SET_SIZE (as_sym, s); 4045#endif 4046 } 4047 else if (S_IS_COMMON (as_sym)) 4048 { 4049 if (S_GET_VALUE (as_sym) > 0 4050 && (S_GET_VALUE (as_sym) 4051 <= bfd_get_gp_size (stdoutput))) 4052 sc = sc_SCommon; 4053 else 4054 sc = sc_Common; 4055 } 4056 else if (seg == text_section) 4057 sc = sc_Text; 4058 else if (seg == data_section) 4059 sc = sc_Data; 4060 else if (strcmp (segname, ".rdata") == 0 4061 || strcmp (segname, ".rodata") == 0) 4062 sc = sc_RData; 4063 else if (strcmp (segname, ".sdata") == 0) 4064 sc = sc_SData; 4065 else if (seg == bss_section) 4066 sc = sc_Bss; 4067 else if (strcmp (segname, ".sbss") == 0) 4068 sc = sc_SBss; 4069 else if (seg == &bfd_abs_section) 4070 sc = sc_Abs; 4071 else 4072 { 4073 /* This must be a user named section. 4074 This is not possible in ECOFF, but it 4075 is in ELF. */ 4076 sc = sc_Data; 4077 } 4078 4079 sym_ptr->ecoff_sym.asym.st = (int) st; 4080 sym_ptr->ecoff_sym.asym.sc = (int) sc; 4081 } 4082 4083 /* This is just an external symbol if it is 4084 outside a procedure and it has a type. 4085 FIXME: g++ will generate symbols which have 4086 different names in the debugging information 4087 than the actual symbol. Should we handle 4088 them here? */ 4089 if ((S_IS_EXTERNAL (as_sym) 4090 || S_IS_WEAK (as_sym) 4091 || ! S_IS_DEFINED (as_sym)) 4092 && sym_ptr->proc_ptr == (proc_t *) NULL 4093 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil 4094 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)) 4095 local = 0; 4096 4097 /* This is just an external symbol if it is a 4098 common symbol. */ 4099 if (S_IS_COMMON (as_sym)) 4100 local = 0; 4101 4102 /* If an st_end symbol has an associated gas 4103 symbol, then it is a local label created for 4104 a .bend or .end directive. Stabs line 4105 numbers will have \001 in the names. */ 4106 if (local 4107 && sym_ptr->ecoff_sym.asym.st != st_End 4108 && strchr (sym_ptr->name, '\001') == 0) 4109 sym_ptr->ecoff_sym.asym.iss = 4110 add_string (&fil_ptr->strings, 4111 fil_ptr->str_hash, 4112 sym_ptr->name, 4113 (shash_t **) NULL); 4114 } 4115 4116 /* We now know the index of this symbol; fill in 4117 locations that have been waiting for that 4118 information. */ 4119 if (sym_ptr->begin_ptr != (localsym_t *) NULL) 4120 { 4121 localsym_t *begin_ptr; 4122 st_t begin_type; 4123 4124 know (local); 4125 begin_ptr = sym_ptr->begin_ptr; 4126 know (begin_ptr->sym_index != -1); 4127 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index; 4128 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4129 sym_ptr->ecoff_sym.asym.iss = 4130 begin_ptr->ecoff_sym.asym.iss; 4131 4132 begin_type = begin_ptr->ecoff_sym.asym.st; 4133 if (begin_type == st_File 4134 || begin_type == st_Block) 4135 { 4136 begin_ptr->ecoff_sym.asym.index = 4137 isym - ifilesym + 1; 4138 (*swap_sym_out) (stdoutput, 4139 &begin_ptr->ecoff_sym.asym, 4140 (*buf 4141 + offset 4142 + (begin_ptr->sym_index 4143 * external_sym_size))); 4144 } 4145 else 4146 { 4147 know (begin_ptr->index_ptr != (aux_t *) NULL); 4148 begin_ptr->index_ptr->data.isym = 4149 isym - ifilesym + 1; 4150 } 4151 4152 /* The value of the symbol marking the end of a 4153 procedure is the size of the procedure. The 4154 value of the symbol marking the end of a 4155 block is the offset from the start of the 4156 procedure to the block. */ 4157 if (begin_type == st_Proc 4158 || begin_type == st_StaticProc) 4159 { 4160 know (as_sym != (symbolS *) NULL); 4161 know (begin_ptr->as_sym != (symbolS *) NULL); 4162 if (S_GET_SEGMENT (as_sym) 4163 != S_GET_SEGMENT (begin_ptr->as_sym)) 4164 as_warn (_(".begin/.bend in different segments")); 4165 sym_ptr->ecoff_sym.asym.value = 4166 (S_GET_VALUE (as_sym) 4167 - S_GET_VALUE (begin_ptr->as_sym)); 4168 4169 /* If the size is odd, this is probably a 4170 mips16 function; force it to be even. */ 4171 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0) 4172 ++sym_ptr->ecoff_sym.asym.value; 4173 4174#ifdef S_SET_SIZE 4175 S_SET_SIZE (begin_ptr->as_sym, 4176 sym_ptr->ecoff_sym.asym.value); 4177#endif 4178 } 4179 else if (begin_type == st_Block 4180 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info) 4181 { 4182 symbolS *begin_sym; 4183 4184 know (as_sym != (symbolS *) NULL); 4185 know (sym_ptr->proc_ptr != (proc_t *) NULL); 4186 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 4187 if (S_GET_SEGMENT (as_sym) 4188 != S_GET_SEGMENT (begin_sym)) 4189 as_warn (_(".begin/.bend in different segments")); 4190 sym_ptr->ecoff_sym.asym.value = 4191 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 4192 } 4193 } 4194 4195 for (f = sym_ptr->forward_ref; 4196 f != (forward_t *) NULL; 4197 f = f->next) 4198 { 4199 know (local); 4200 f->ifd_ptr->data.isym = fil_ptr->file_index; 4201 f->index_ptr->data.rndx.index = isym - ifilesym; 4202 } 4203 4204 if (local) 4205 { 4206 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size) 4207 sym_out = ecoff_add_bytes (buf, bufend, 4208 sym_out, 4209 external_sym_size); 4210 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym, 4211 sym_out); 4212 sym_out += external_sym_size; 4213 4214 sym_ptr->sym_index = isym; 4215 4216 if (sym_ptr->proc_ptr != (proc_t *) NULL 4217 && sym_ptr->proc_ptr->sym == sym_ptr) 4218 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym; 4219 4220 ++isym; 4221 } 4222 4223 /* Record the local symbol index and file number in 4224 case this is an external symbol. Note that this 4225 destroys the asym.index field. */ 4226 if (as_sym != (symbolS *) NULL 4227 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr) 4228 { 4229 if ((sym_ptr->ecoff_sym.asym.st == st_Proc 4230 || sym_ptr->ecoff_sym.asym.st == st_StaticProc) 4231 && local) 4232 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1; 4233 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index; 4234 4235 /* Don't try to merge an FDR which has an 4236 external symbol attached to it. */ 4237 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym)) 4238 fil_ptr->fdr.fMerge = 0; 4239 } 4240 } 4241 } 4242 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase; 4243 } 4244 } 4245 4246 return offset + isym * external_sym_size; 4247} 4248 4249/* Swap out the procedure information. */ 4250 4251static unsigned long 4252ecoff_build_procs (const struct ecoff_debug_swap *backend, 4253 char **buf, 4254 char **bufend, 4255 unsigned long offset) 4256{ 4257 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4258 void (* const swap_pdr_out) (bfd *, const PDR *, PTR) 4259 = backend->swap_pdr_out; 4260 char *pdr_out; 4261 long iproc; 4262 vlinks_t *file_link; 4263 4264 pdr_out = *buf + offset; 4265 4266 iproc = 0; 4267 4268 /* The procedures are stored by file. */ 4269 for (file_link = file_desc.first; 4270 file_link != (vlinks_t *) NULL; 4271 file_link = file_link->next) 4272 { 4273 int fil_cnt; 4274 efdr_t *fil_ptr; 4275 efdr_t *fil_end; 4276 4277 if (file_link->next == (vlinks_t *) NULL) 4278 fil_cnt = file_desc.objects_last_page; 4279 else 4280 fil_cnt = file_desc.objects_per_page; 4281 fil_ptr = file_link->datum->file; 4282 fil_end = fil_ptr + fil_cnt; 4283 for (; fil_ptr < fil_end; fil_ptr++) 4284 { 4285 vlinks_t *proc_link; 4286 int first; 4287 4288 fil_ptr->fdr.ipdFirst = iproc; 4289 first = 1; 4290 for (proc_link = fil_ptr->procs.first; 4291 proc_link != (vlinks_t *) NULL; 4292 proc_link = proc_link->next) 4293 { 4294 int prc_cnt; 4295 proc_t *proc_ptr; 4296 proc_t *proc_end; 4297 4298 if (proc_link->next == (vlinks_t *) NULL) 4299 prc_cnt = fil_ptr->procs.objects_last_page; 4300 else 4301 prc_cnt = fil_ptr->procs.objects_per_page; 4302 proc_ptr = proc_link->datum->proc; 4303 proc_end = proc_ptr + prc_cnt; 4304 for (; proc_ptr < proc_end; proc_ptr++) 4305 { 4306 symbolS *adr_sym; 4307 unsigned long adr; 4308 4309 adr_sym = proc_ptr->sym->as_sym; 4310 adr = (S_GET_VALUE (adr_sym) 4311 + bfd_get_section_vma (stdoutput, 4312 S_GET_SEGMENT (adr_sym))); 4313 if (first) 4314 { 4315 /* This code used to force the adr of the very 4316 first fdr to be 0. However, the native tools 4317 don't do that, and I can't remember why it 4318 used to work that way, so I took it out. */ 4319 fil_ptr->fdr.adr = adr; 4320 first = 0; 4321 } 4322 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr; 4323 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size) 4324 pdr_out = ecoff_add_bytes (buf, bufend, 4325 pdr_out, 4326 external_pdr_size); 4327 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out); 4328 pdr_out += external_pdr_size; 4329 ++iproc; 4330 } 4331 } 4332 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst; 4333 } 4334 } 4335 4336 return offset + iproc * external_pdr_size; 4337} 4338 4339/* Swap out the aux information. */ 4340 4341static unsigned long 4342ecoff_build_aux (const struct ecoff_debug_swap *backend, 4343 char **buf, 4344 char **bufend, 4345 unsigned long offset) 4346{ 4347 int bigendian; 4348 union aux_ext *aux_out; 4349 long iaux; 4350 vlinks_t *file_link; 4351 4352 bigendian = bfd_big_endian (stdoutput); 4353 4354 aux_out = (union aux_ext *) (*buf + offset); 4355 4356 iaux = 0; 4357 4358 /* The aux entries are stored by file. */ 4359 for (file_link = file_desc.first; 4360 file_link != (vlinks_t *) NULL; 4361 file_link = file_link->next) 4362 { 4363 int fil_cnt; 4364 efdr_t *fil_ptr; 4365 efdr_t *fil_end; 4366 4367 if (file_link->next == (vlinks_t *) NULL) 4368 fil_cnt = file_desc.objects_last_page; 4369 else 4370 fil_cnt = file_desc.objects_per_page; 4371 fil_ptr = file_link->datum->file; 4372 fil_end = fil_ptr + fil_cnt; 4373 for (; fil_ptr < fil_end; fil_ptr++) 4374 { 4375 vlinks_t *aux_link; 4376 4377 fil_ptr->fdr.fBigendian = bigendian; 4378 fil_ptr->fdr.iauxBase = iaux; 4379 for (aux_link = fil_ptr->aux_syms.first; 4380 aux_link != (vlinks_t *) NULL; 4381 aux_link = aux_link->next) 4382 { 4383 int aux_cnt; 4384 aux_t *aux_ptr; 4385 aux_t *aux_end; 4386 4387 if (aux_link->next == (vlinks_t *) NULL) 4388 aux_cnt = fil_ptr->aux_syms.objects_last_page; 4389 else 4390 aux_cnt = fil_ptr->aux_syms.objects_per_page; 4391 aux_ptr = aux_link->datum->aux; 4392 aux_end = aux_ptr + aux_cnt; 4393 for (; aux_ptr < aux_end; aux_ptr++) 4394 { 4395 if ((unsigned long) (*bufend - (char *) aux_out) 4396 < sizeof (union aux_ext)) 4397 aux_out = ((union aux_ext *) 4398 ecoff_add_bytes (buf, bufend, 4399 (char *) aux_out, 4400 sizeof (union aux_ext))); 4401 switch (aux_ptr->type) 4402 { 4403 case aux_tir: 4404 (*backend->swap_tir_out) (bigendian, 4405 &aux_ptr->data.ti, 4406 &aux_out->a_ti); 4407 break; 4408 case aux_rndx: 4409 (*backend->swap_rndx_out) (bigendian, 4410 &aux_ptr->data.rndx, 4411 &aux_out->a_rndx); 4412 break; 4413 case aux_dnLow: 4414 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow, 4415 aux_out); 4416 break; 4417 case aux_dnHigh: 4418 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh, 4419 aux_out); 4420 break; 4421 case aux_isym: 4422 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym, 4423 aux_out); 4424 break; 4425 case aux_iss: 4426 AUX_PUT_ISS (bigendian, aux_ptr->data.iss, 4427 aux_out); 4428 break; 4429 case aux_width: 4430 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width, 4431 aux_out); 4432 break; 4433 case aux_count: 4434 AUX_PUT_COUNT (bigendian, aux_ptr->data.count, 4435 aux_out); 4436 break; 4437 } 4438 4439 ++aux_out; 4440 ++iaux; 4441 } 4442 } 4443 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase; 4444 } 4445 } 4446 4447 return ecoff_padding_adjust (backend, buf, bufend, 4448 offset + iaux * sizeof (union aux_ext), 4449 (char **) NULL); 4450} 4451 4452/* Copy out the strings from a varray_t. This returns the number of 4453 bytes copied, rather than the new offset. */ 4454 4455static unsigned long 4456ecoff_build_strings (char **buf, 4457 char **bufend, 4458 unsigned long offset, 4459 varray_t *vp) 4460{ 4461 unsigned long istr; 4462 char *str_out; 4463 vlinks_t *str_link; 4464 4465 str_out = *buf + offset; 4466 4467 istr = 0; 4468 4469 for (str_link = vp->first; 4470 str_link != (vlinks_t *) NULL; 4471 str_link = str_link->next) 4472 { 4473 unsigned long str_cnt; 4474 4475 if (str_link->next == (vlinks_t *) NULL) 4476 str_cnt = vp->objects_last_page; 4477 else 4478 str_cnt = vp->objects_per_page; 4479 4480 if ((unsigned long)(*bufend - str_out) < str_cnt) 4481 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt); 4482 4483 memcpy (str_out, str_link->datum->byte, str_cnt); 4484 str_out += str_cnt; 4485 istr += str_cnt; 4486 } 4487 4488 return istr; 4489} 4490 4491/* Dump out the local strings. */ 4492 4493static unsigned long 4494ecoff_build_ss (const struct ecoff_debug_swap *backend, 4495 char **buf, 4496 char **bufend, 4497 unsigned long offset) 4498{ 4499 long iss; 4500 vlinks_t *file_link; 4501 4502 iss = 0; 4503 4504 for (file_link = file_desc.first; 4505 file_link != (vlinks_t *) NULL; 4506 file_link = file_link->next) 4507 { 4508 int fil_cnt; 4509 efdr_t *fil_ptr; 4510 efdr_t *fil_end; 4511 4512 if (file_link->next == (vlinks_t *) NULL) 4513 fil_cnt = file_desc.objects_last_page; 4514 else 4515 fil_cnt = file_desc.objects_per_page; 4516 fil_ptr = file_link->datum->file; 4517 fil_end = fil_ptr + fil_cnt; 4518 for (; fil_ptr < fil_end; fil_ptr++) 4519 { 4520 long ss_cnt; 4521 4522 fil_ptr->fdr.issBase = iss; 4523 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss, 4524 &fil_ptr->strings); 4525 fil_ptr->fdr.cbSs = ss_cnt; 4526 iss += ss_cnt; 4527 } 4528 } 4529 4530 return ecoff_padding_adjust (backend, buf, bufend, offset + iss, 4531 (char **) NULL); 4532} 4533 4534/* Swap out the file descriptors. */ 4535 4536static unsigned long 4537ecoff_build_fdr (const struct ecoff_debug_swap *backend, 4538 char **buf, 4539 char **bufend, 4540 unsigned long offset) 4541{ 4542 const bfd_size_type external_fdr_size = backend->external_fdr_size; 4543 void (* const swap_fdr_out) (bfd *, const FDR *, PTR) 4544 = backend->swap_fdr_out; 4545 long ifile; 4546 char *fdr_out; 4547 vlinks_t *file_link; 4548 4549 ifile = 0; 4550 4551 fdr_out = *buf + offset; 4552 4553 for (file_link = file_desc.first; 4554 file_link != (vlinks_t *) NULL; 4555 file_link = file_link->next) 4556 { 4557 int fil_cnt; 4558 efdr_t *fil_ptr; 4559 efdr_t *fil_end; 4560 4561 if (file_link->next == (vlinks_t *) NULL) 4562 fil_cnt = file_desc.objects_last_page; 4563 else 4564 fil_cnt = file_desc.objects_per_page; 4565 fil_ptr = file_link->datum->file; 4566 fil_end = fil_ptr + fil_cnt; 4567 for (; fil_ptr < fil_end; fil_ptr++) 4568 { 4569 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size) 4570 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out, 4571 external_fdr_size); 4572 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out); 4573 fdr_out += external_fdr_size; 4574 ++ifile; 4575 } 4576 } 4577 4578 return offset + ifile * external_fdr_size; 4579} 4580 4581/* Set up the external symbols. These are supposed to be handled by 4582 the backend. This routine just gets the right information and 4583 calls a backend function to deal with it. */ 4584 4585static void 4586ecoff_setup_ext (void) 4587{ 4588 register symbolS *sym; 4589 4590 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4591 { 4592 if (symbol_get_obj (sym)->ecoff_symbol == NULL) 4593 continue; 4594 4595 /* If this is a local symbol, then force the fields to zero. */ 4596 if (! S_IS_EXTERNAL (sym) 4597 && ! S_IS_WEAK (sym) 4598 && S_IS_DEFINED (sym)) 4599 { 4600 struct localsym *lsym; 4601 4602 lsym = symbol_get_obj (sym)->ecoff_symbol; 4603 lsym->ecoff_sym.asym.value = 0; 4604 lsym->ecoff_sym.asym.st = (int) st_Nil; 4605 lsym->ecoff_sym.asym.sc = (int) sc_Nil; 4606 lsym->ecoff_sym.asym.index = indexNil; 4607 } 4608 4609 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym); 4610 } 4611} 4612 4613/* Build the ECOFF debugging information. */ 4614 4615unsigned long 4616ecoff_build_debug (HDRR *hdr, 4617 char **bufp, 4618 const struct ecoff_debug_swap *backend) 4619{ 4620 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4621 tag_t *ptag; 4622 tag_t *ptag_next; 4623 efdr_t *fil_ptr; 4624 int end_warning; 4625 efdr_t *hold_file_ptr; 4626 proc_t *hold_proc_ptr; 4627 symbolS *sym; 4628 char *buf; 4629 char *bufend; 4630 unsigned long offset; 4631 4632 /* Make sure we have a file. */ 4633 if (first_file == (efdr_t *) NULL) 4634 add_file ((const char *) NULL, 0, 1); 4635 4636 /* Handle any top level tags. */ 4637 for (ptag = top_tag_head->first_tag; 4638 ptag != (tag_t *) NULL; 4639 ptag = ptag_next) 4640 { 4641 if (ptag->forward_ref != (forward_t *) NULL) 4642 add_unknown_tag (ptag); 4643 4644 ptag_next = ptag->same_block; 4645 ptag->hash_ptr->tag_ptr = ptag->same_name; 4646 free_tag (ptag); 4647 } 4648 4649 free_thead (top_tag_head); 4650 4651 /* Look through the symbols. Add debugging information for each 4652 symbol that has not already received it. */ 4653 hold_file_ptr = cur_file_ptr; 4654 hold_proc_ptr = cur_proc_ptr; 4655 cur_proc_ptr = (proc_t *) NULL; 4656 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4657 { 4658 if (symbol_get_obj (sym)->ecoff_symbol != NULL 4659 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL 4660 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0) 4661 continue; 4662 4663 cur_file_ptr = symbol_get_obj (sym)->ecoff_file; 4664 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym, 4665 (bfd_vma) 0, S_GET_VALUE (sym), indexNil); 4666 } 4667 cur_proc_ptr = hold_proc_ptr; 4668 cur_file_ptr = hold_file_ptr; 4669 4670 /* Output an ending symbol for all the files. We have to do this 4671 here for the last file, so we may as well do it for all of the 4672 files. */ 4673 end_warning = 0; 4674 for (fil_ptr = first_file; 4675 fil_ptr != (efdr_t *) NULL; 4676 fil_ptr = fil_ptr->next_file) 4677 { 4678 cur_file_ptr = fil_ptr; 4679 while (cur_file_ptr->cur_scope != (scope_t *) NULL 4680 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL) 4681 { 4682 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev; 4683 if (! end_warning && ! cur_file_ptr->fake) 4684 { 4685 as_warn (_("missing .end or .bend at end of file")); 4686 end_warning = 1; 4687 } 4688 } 4689 if (cur_file_ptr->cur_scope != (scope_t *) NULL) 4690 (void) add_ecoff_symbol ((const char *) NULL, 4691 st_End, sc_Text, 4692 (symbolS *) NULL, 4693 (bfd_vma) 0, 4694 (symint_t) 0, 4695 (symint_t) 0); 4696 } 4697 4698 /* Build the symbolic information. */ 4699 offset = 0; 4700 buf = xmalloc (PAGE_SIZE); 4701 bufend = buf + PAGE_SIZE; 4702 4703 /* Build the line number information. */ 4704 hdr->cbLineOffset = offset; 4705 offset = ecoff_build_lineno (backend, &buf, &bufend, offset, 4706 &hdr->ilineMax); 4707 hdr->cbLine = offset - hdr->cbLineOffset; 4708 4709 /* We don't use dense numbers at all. */ 4710 hdr->idnMax = 0; 4711 hdr->cbDnOffset = 0; 4712 4713 /* We can't build the PDR table until we have built the symbols, 4714 because a PDR contains a symbol index. However, we set aside 4715 space at this point. */ 4716 hdr->ipdMax = proc_cnt; 4717 hdr->cbPdOffset = offset; 4718 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size) 4719 (void) ecoff_add_bytes (&buf, &bufend, buf + offset, 4720 proc_cnt * external_pdr_size); 4721 offset += proc_cnt * external_pdr_size; 4722 4723 /* Build the local symbols. */ 4724 hdr->cbSymOffset = offset; 4725 offset = ecoff_build_symbols (backend, &buf, &bufend, offset); 4726 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size; 4727 4728 /* Building the symbols initializes the symbol index in the PDR's. 4729 Now we can swap out the PDR's. */ 4730 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset); 4731 4732 /* We don't use optimization symbols. */ 4733 hdr->ioptMax = 0; 4734 hdr->cbOptOffset = 0; 4735 4736 /* Swap out the auxiliary type information. */ 4737 hdr->cbAuxOffset = offset; 4738 offset = ecoff_build_aux (backend, &buf, &bufend, offset); 4739 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext); 4740 4741 /* Copy out the local strings. */ 4742 hdr->cbSsOffset = offset; 4743 offset = ecoff_build_ss (backend, &buf, &bufend, offset); 4744 hdr->issMax = offset - hdr->cbSsOffset; 4745 4746 /* We don't use relative file descriptors. */ 4747 hdr->crfd = 0; 4748 hdr->cbRfdOffset = 0; 4749 4750 /* Swap out the file descriptors. */ 4751 hdr->cbFdOffset = offset; 4752 offset = ecoff_build_fdr (backend, &buf, &bufend, offset); 4753 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size; 4754 4755 /* Set up the external symbols, which are handled by the BFD back 4756 end. */ 4757 hdr->issExtMax = 0; 4758 hdr->cbSsExtOffset = 0; 4759 hdr->iextMax = 0; 4760 hdr->cbExtOffset = 0; 4761 ecoff_setup_ext (); 4762 4763 know ((offset & (backend->debug_align - 1)) == 0); 4764 4765 /* FIXME: This value should be determined from the .verstamp directive, 4766 with reasonable defaults in config files. */ 4767#ifdef TC_ALPHA 4768 hdr->vstamp = 0x030b; 4769#else 4770 hdr->vstamp = 0x020b; 4771#endif 4772 4773 *bufp = buf; 4774 return offset; 4775} 4776 4777/* Allocate a cluster of pages. */ 4778 4779#ifndef MALLOC_CHECK 4780 4781static page_type * 4782allocate_cluster (unsigned long npages) 4783{ 4784 register page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE); 4785 4786#ifdef ECOFF_DEBUG 4787 if (debug > 3) 4788 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value); 4789#endif 4790 4791 memset (value, 0, npages * PAGE_USIZE); 4792 4793 return value; 4794} 4795 4796static page_type *cluster_ptr = NULL; 4797static unsigned long pages_left = 0; 4798 4799#endif /* MALLOC_CHECK */ 4800 4801/* Allocate one page (which is initialized to 0). */ 4802 4803static page_type * 4804allocate_page (void) 4805{ 4806#ifndef MALLOC_CHECK 4807 4808 if (pages_left == 0) 4809 { 4810 pages_left = MAX_CLUSTER_PAGES; 4811 cluster_ptr = allocate_cluster (pages_left); 4812 } 4813 4814 pages_left--; 4815 return cluster_ptr++; 4816 4817#else /* MALLOC_CHECK */ 4818 4819 page_type *ptr; 4820 4821 ptr = xmalloc (PAGE_USIZE); 4822 memset (ptr, 0, PAGE_USIZE); 4823 return ptr; 4824 4825#endif /* MALLOC_CHECK */ 4826} 4827 4828/* Allocate scoping information. */ 4829 4830static scope_t * 4831allocate_scope (void) 4832{ 4833 register scope_t *ptr; 4834 static scope_t initial_scope; 4835 4836#ifndef MALLOC_CHECK 4837 4838 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4839 if (ptr != (scope_t *) NULL) 4840 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free; 4841 else 4842 { 4843 register int unallocated = alloc_counts[(int) alloc_type_scope].unallocated; 4844 register page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page; 4845 4846 if (unallocated == 0) 4847 { 4848 unallocated = PAGE_SIZE / sizeof (scope_t); 4849 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page (); 4850 alloc_counts[(int) alloc_type_scope].total_pages++; 4851 } 4852 4853 ptr = &cur_page->scope[--unallocated]; 4854 alloc_counts[(int) alloc_type_scope].unallocated = unallocated; 4855 } 4856 4857#else 4858 4859 ptr = (scope_t *) xmalloc (sizeof (scope_t)); 4860 4861#endif 4862 4863 alloc_counts[(int) alloc_type_scope].total_alloc++; 4864 *ptr = initial_scope; 4865 return ptr; 4866} 4867 4868/* Free scoping information. */ 4869 4870static void 4871free_scope (scope_t *ptr) 4872{ 4873 alloc_counts[(int) alloc_type_scope].total_free++; 4874 4875#ifndef MALLOC_CHECK 4876 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4877 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr; 4878#else 4879 free ((PTR) ptr); 4880#endif 4881} 4882 4883/* Allocate links for pages in a virtual array. */ 4884 4885static vlinks_t * 4886allocate_vlinks (void) 4887{ 4888 register vlinks_t *ptr; 4889 static vlinks_t initial_vlinks; 4890 4891#ifndef MALLOC_CHECK 4892 4893 register int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated; 4894 register page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page; 4895 4896 if (unallocated == 0) 4897 { 4898 unallocated = PAGE_SIZE / sizeof (vlinks_t); 4899 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page (); 4900 alloc_counts[(int) alloc_type_vlinks].total_pages++; 4901 } 4902 4903 ptr = &cur_page->vlinks[--unallocated]; 4904 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated; 4905 4906#else 4907 4908 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t)); 4909 4910#endif 4911 4912 alloc_counts[(int) alloc_type_vlinks].total_alloc++; 4913 *ptr = initial_vlinks; 4914 return ptr; 4915} 4916 4917/* Allocate string hash buckets. */ 4918 4919static shash_t * 4920allocate_shash (void) 4921{ 4922 register shash_t *ptr; 4923 static shash_t initial_shash; 4924 4925#ifndef MALLOC_CHECK 4926 4927 register int unallocated = alloc_counts[(int) alloc_type_shash].unallocated; 4928 register page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page; 4929 4930 if (unallocated == 0) 4931 { 4932 unallocated = PAGE_SIZE / sizeof (shash_t); 4933 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page (); 4934 alloc_counts[(int) alloc_type_shash].total_pages++; 4935 } 4936 4937 ptr = &cur_page->shash[--unallocated]; 4938 alloc_counts[(int) alloc_type_shash].unallocated = unallocated; 4939 4940#else 4941 4942 ptr = (shash_t *) xmalloc (sizeof (shash_t)); 4943 4944#endif 4945 4946 alloc_counts[(int) alloc_type_shash].total_alloc++; 4947 *ptr = initial_shash; 4948 return ptr; 4949} 4950 4951/* Allocate type hash buckets. */ 4952 4953static thash_t * 4954allocate_thash (void) 4955{ 4956 register thash_t *ptr; 4957 static thash_t initial_thash; 4958 4959#ifndef MALLOC_CHECK 4960 4961 register int unallocated = alloc_counts[(int) alloc_type_thash].unallocated; 4962 register page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page; 4963 4964 if (unallocated == 0) 4965 { 4966 unallocated = PAGE_SIZE / sizeof (thash_t); 4967 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page (); 4968 alloc_counts[(int) alloc_type_thash].total_pages++; 4969 } 4970 4971 ptr = &cur_page->thash[--unallocated]; 4972 alloc_counts[(int) alloc_type_thash].unallocated = unallocated; 4973 4974#else 4975 4976 ptr = (thash_t *) xmalloc (sizeof (thash_t)); 4977 4978#endif 4979 4980 alloc_counts[(int) alloc_type_thash].total_alloc++; 4981 *ptr = initial_thash; 4982 return ptr; 4983} 4984 4985/* Allocate structure, union, or enum tag information. */ 4986 4987static tag_t * 4988allocate_tag (void) 4989{ 4990 register tag_t *ptr; 4991 static tag_t initial_tag; 4992 4993#ifndef MALLOC_CHECK 4994 4995 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 4996 if (ptr != (tag_t *) NULL) 4997 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free; 4998 else 4999 { 5000 register int unallocated = alloc_counts[(int) alloc_type_tag].unallocated; 5001 register page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page; 5002 5003 if (unallocated == 0) 5004 { 5005 unallocated = PAGE_SIZE / sizeof (tag_t); 5006 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page (); 5007 alloc_counts[(int) alloc_type_tag].total_pages++; 5008 } 5009 5010 ptr = &cur_page->tag[--unallocated]; 5011 alloc_counts[(int) alloc_type_tag].unallocated = unallocated; 5012 } 5013 5014#else 5015 5016 ptr = (tag_t *) xmalloc (sizeof (tag_t)); 5017 5018#endif 5019 5020 alloc_counts[(int) alloc_type_tag].total_alloc++; 5021 *ptr = initial_tag; 5022 return ptr; 5023} 5024 5025/* Free scoping information. */ 5026 5027static void 5028free_tag (tag_t *ptr) 5029{ 5030 alloc_counts[(int) alloc_type_tag].total_free++; 5031 5032#ifndef MALLOC_CHECK 5033 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5034 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr; 5035#else 5036 free ((PTR_T) ptr); 5037#endif 5038} 5039 5040/* Allocate forward reference to a yet unknown tag. */ 5041 5042static forward_t * 5043allocate_forward (void) 5044{ 5045 register forward_t *ptr; 5046 static forward_t initial_forward; 5047 5048#ifndef MALLOC_CHECK 5049 5050 register int unallocated = alloc_counts[(int) alloc_type_forward].unallocated; 5051 register page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page; 5052 5053 if (unallocated == 0) 5054 { 5055 unallocated = PAGE_SIZE / sizeof (forward_t); 5056 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page (); 5057 alloc_counts[(int) alloc_type_forward].total_pages++; 5058 } 5059 5060 ptr = &cur_page->forward[--unallocated]; 5061 alloc_counts[(int) alloc_type_forward].unallocated = unallocated; 5062 5063#else 5064 5065 ptr = (forward_t *) xmalloc (sizeof (forward_t)); 5066 5067#endif 5068 5069 alloc_counts[(int) alloc_type_forward].total_alloc++; 5070 *ptr = initial_forward; 5071 return ptr; 5072} 5073 5074/* Allocate head of type hash list. */ 5075 5076static thead_t * 5077allocate_thead (void) 5078{ 5079 register thead_t *ptr; 5080 static thead_t initial_thead; 5081 5082#ifndef MALLOC_CHECK 5083 5084 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5085 if (ptr != (thead_t *) NULL) 5086 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free; 5087 else 5088 { 5089 register int unallocated = alloc_counts[(int) alloc_type_thead].unallocated; 5090 register page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page; 5091 5092 if (unallocated == 0) 5093 { 5094 unallocated = PAGE_SIZE / sizeof (thead_t); 5095 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page (); 5096 alloc_counts[(int) alloc_type_thead].total_pages++; 5097 } 5098 5099 ptr = &cur_page->thead[--unallocated]; 5100 alloc_counts[(int) alloc_type_thead].unallocated = unallocated; 5101 } 5102 5103#else 5104 5105 ptr = (thead_t *) xmalloc (sizeof (thead_t)); 5106 5107#endif 5108 5109 alloc_counts[(int) alloc_type_thead].total_alloc++; 5110 *ptr = initial_thead; 5111 return ptr; 5112} 5113 5114/* Free scoping information. */ 5115 5116static void 5117free_thead (thead_t *ptr) 5118{ 5119 alloc_counts[(int) alloc_type_thead].total_free++; 5120 5121#ifndef MALLOC_CHECK 5122 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5123 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr; 5124#else 5125 free ((PTR_T) ptr); 5126#endif 5127} 5128 5129static lineno_list_t * 5130allocate_lineno_list (void) 5131{ 5132 register lineno_list_t *ptr; 5133 static lineno_list_t initial_lineno_list; 5134 5135#ifndef MALLOC_CHECK 5136 5137 register int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated; 5138 register page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page; 5139 5140 if (unallocated == 0) 5141 { 5142 unallocated = PAGE_SIZE / sizeof (lineno_list_t); 5143 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page (); 5144 alloc_counts[(int) alloc_type_lineno].total_pages++; 5145 } 5146 5147 ptr = &cur_page->lineno[--unallocated]; 5148 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated; 5149 5150#else 5151 5152 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t)); 5153 5154#endif 5155 5156 alloc_counts[(int) alloc_type_lineno].total_alloc++; 5157 *ptr = initial_lineno_list; 5158 return ptr; 5159} 5160 5161void 5162ecoff_set_gp_prolog_size (int sz) 5163{ 5164 if (cur_proc_ptr == 0) 5165 return; 5166 5167 cur_proc_ptr->pdr.gp_prologue = sz; 5168 if (cur_proc_ptr->pdr.gp_prologue != sz) 5169 { 5170 as_warn (_("GP prologue size exceeds field size, using 0 instead")); 5171 cur_proc_ptr->pdr.gp_prologue = 0; 5172 } 5173 5174 cur_proc_ptr->pdr.gp_used = 1; 5175} 5176 5177int 5178ecoff_no_current_file (void) 5179{ 5180 return cur_file_ptr == (efdr_t *) NULL; 5181} 5182 5183void 5184ecoff_generate_asm_lineno (void) 5185{ 5186 unsigned int lineno; 5187 char *filename; 5188 lineno_list_t *list; 5189 5190 as_where (&filename, &lineno); 5191 5192 if (current_stabs_filename == (char *) NULL 5193 || strcmp (current_stabs_filename, filename)) 5194 add_file (filename, 0, 1); 5195 5196 list = allocate_lineno_list (); 5197 5198 list->next = (lineno_list_t *) NULL; 5199 list->file = cur_file_ptr; 5200 list->proc = cur_proc_ptr; 5201 list->frag = frag_now; 5202 list->paddr = frag_now_fix (); 5203 list->lineno = lineno; 5204 5205 /* We don't want to merge files which have line numbers. */ 5206 cur_file_ptr->fdr.fMerge = 0; 5207 5208 /* A .loc directive will sometimes appear before a .ent directive, 5209 which means that cur_proc_ptr will be NULL here. Arrange to 5210 patch this up. */ 5211 if (cur_proc_ptr == (proc_t *) NULL) 5212 { 5213 lineno_list_t **pl; 5214 5215 pl = &noproc_lineno; 5216 while (*pl != (lineno_list_t *) NULL) 5217 pl = &(*pl)->next; 5218 *pl = list; 5219 } 5220 else 5221 { 5222 last_lineno = list; 5223 *last_lineno_ptr = list; 5224 last_lineno_ptr = &list->next; 5225 } 5226} 5227 5228#else 5229 5230void 5231ecoff_generate_asm_lineno (void) 5232{ 5233} 5234 5235#endif /* ECOFF_DEBUGGING */ 5236