1/* ECOFF debugging support. 2 Copyright (C) 1993-2020 Free Software Foundation, Inc. 3 Contributed by Cygnus Support. 4 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A 5 good deal of it comes directly from mips-tfile.c, by Michael 6 Meissner <meissner@osf.org>. 7 8 This file is part of GAS. 9 10 GAS is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 GAS is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with GAS; see the file COPYING. If not, write to the Free 22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 23 02110-1301, USA. */ 24 25#include "as.h" 26 27/* This file is compiled conditionally for those targets which use 28 ECOFF debugging information (e.g., MIPS ELF, Alpha ECOFF). */ 29 30#include "ecoff.h" 31 32#ifdef ECOFF_DEBUGGING 33 34#include "coff/internal.h" 35#include "coff/symconst.h" 36#include "aout/stab_gnu.h" 37#include "filenames.h" 38#include "safe-ctype.h" 39 40/* Why isn't this in coff/sym.h? */ 41#define ST_RFDESCAPE 0xfff 42 43/* This file constructs the information used by the ECOFF debugging 44 format. It just builds a large block of data. 45 46 We support both ECOFF style debugging and stabs debugging (the 47 stabs symbols are encapsulated in ECOFF symbols). This should let 48 us handle anything the compiler might throw at us. */ 49 50/* Here is a brief description of the MIPS ECOFF symbol table, by 51 Michael Meissner. The MIPS symbol table has the following pieces: 52 53 Symbolic Header 54 | 55 +-- Auxiliary Symbols 56 | 57 +-- Dense number table 58 | 59 +-- Optimizer Symbols 60 | 61 +-- External Strings 62 | 63 +-- External Symbols 64 | 65 +-- Relative file descriptors 66 | 67 +-- File table 68 | 69 +-- Procedure table 70 | 71 +-- Line number table 72 | 73 +-- Local Strings 74 | 75 +-- Local Symbols 76 77 The symbolic header points to each of the other tables, and also 78 contains the number of entries. It also contains a magic number 79 and MIPS compiler version number, such as 2.0. 80 81 The auxiliary table is a series of 32 bit integers, that are 82 referenced as needed from the local symbol table. Unlike standard 83 COFF, the aux. information does not follow the symbol that uses 84 it, but rather is a separate table. In theory, this would allow 85 the MIPS compilers to collapse duplicate aux. entries, but I've not 86 noticed this happening with the 1.31 compiler suite. The different 87 types of aux. entries are: 88 89 1) dnLow: Low bound on array dimension. 90 91 2) dnHigh: High bound on array dimension. 92 93 3) isym: Index to the local symbol which is the start of the 94 function for the end of function first aux. entry. 95 96 4) width: Width of structures and bitfields. 97 98 5) count: Count of ranges for variant part. 99 100 6) rndx: A relative index into the symbol table. The relative 101 index field has two parts: rfd which is a pointer into the 102 relative file index table or ST_RFDESCAPE which says the next 103 aux. entry is the file number, and index: which is the pointer 104 into the local symbol within a given file table. This is for 105 things like references to types defined in another file. 106 107 7) Type information: This is like the COFF type bits, except it 108 is 32 bits instead of 16; they still have room to add new 109 basic types; and they can handle more than 6 levels of array, 110 pointer, function, etc. Each type information field contains 111 the following structure members: 112 113 a) fBitfield: a bit that says this is a bitfield, and the 114 size in bits follows as the next aux. entry. 115 116 b) continued: a bit that says the next aux. entry is a 117 continuation of the current type information (in case 118 there are more than 6 levels of array/ptr/function). 119 120 c) bt: an integer containing the base type before adding 121 array, pointer, function, etc. qualifiers. The 122 current base types that I have documentation for are: 123 124 btNil -- undefined 125 btAdr -- address - integer same size as ptr 126 btChar -- character 127 btUChar -- unsigned character 128 btShort -- short 129 btUShort -- unsigned short 130 btInt -- int 131 btUInt -- unsigned int 132 btLong -- long 133 btULong -- unsigned long 134 btFloat -- float (real) 135 btDouble -- Double (real) 136 btStruct -- Structure (Record) 137 btUnion -- Union (variant) 138 btEnum -- Enumerated 139 btTypedef -- defined via a typedef isymRef 140 btRange -- subrange of int 141 btSet -- pascal sets 142 btComplex -- fortran complex 143 btDComplex -- fortran double complex 144 btIndirect -- forward or unnamed typedef 145 btFixedDec -- Fixed Decimal 146 btFloatDec -- Float Decimal 147 btString -- Varying Length Character String 148 btBit -- Aligned Bit String 149 btPicture -- Picture 150 btVoid -- Void (MIPS cc revision >= 2.00) 151 152 d) tq0 - tq5: type qualifier fields as needed. The 153 current type qualifier fields I have documentation for 154 are: 155 156 tqNil -- no more qualifiers 157 tqPtr -- pointer 158 tqProc -- procedure 159 tqArray -- array 160 tqFar -- 8086 far pointers 161 tqVol -- volatile 162 163 The dense number table is used in the front ends, and disappears by 164 the time the .o is created. 165 166 With the 1.31 compiler suite, the optimization symbols don't seem 167 to be used as far as I can tell. 168 169 The linker is the first entity that creates the relative file 170 descriptor table, and I believe it is used so that the individual 171 file table pointers don't have to be rewritten when the objects are 172 merged together into the program file. 173 174 Unlike COFF, the basic symbol & string tables are split into 175 external and local symbols/strings. The relocation information 176 only goes off of the external symbol table, and the debug 177 information only goes off of the internal symbol table. The 178 external symbols can have links to an appropriate file index and 179 symbol within the file to give it the appropriate type information. 180 Because of this, the external symbols are actually larger than the 181 internal symbols (to contain the link information), and contain the 182 local symbol structure as a member, though this member is not the 183 first member of the external symbol structure (!). I suspect this 184 split is to make strip easier to deal with. 185 186 Each file table has offsets for where the line numbers, local 187 strings, local symbols, and procedure table starts from within the 188 global tables, and the indices are reset to 0 for each of those 189 tables for the file. 190 191 The procedure table contains the binary equivalents of the .ent 192 (start of the function address), .frame (what register is the 193 virtual frame pointer, constant offset from the register to obtain 194 the VFP, and what register holds the return address), .mask/.fmask 195 (bitmask of saved registers, and where the first register is stored 196 relative to the VFP) assembler directives. It also contains the 197 low and high bounds of the line numbers if debugging is turned on. 198 199 The line number table is a compressed form of the normal COFF line 200 table. Each line number entry is either 1 or 3 bytes long, and 201 contains a signed delta from the previous line, and an unsigned 202 count of the number of instructions this statement takes. 203 204 The local symbol table contains the following fields: 205 206 1) iss: index to the local string table giving the name of the 207 symbol. 208 209 2) value: value of the symbol (address, register number, etc.). 210 211 3) st: symbol type. The current symbol types are: 212 213 stNil -- Nuthin' special 214 stGlobal -- external symbol 215 stStatic -- static 216 stParam -- procedure argument 217 stLocal -- local variable 218 stLabel -- label 219 stProc -- External Procedure 220 stBlock -- beginning of block 221 stEnd -- end (of anything) 222 stMember -- member (of anything) 223 stTypedef -- type definition 224 stFile -- file name 225 stRegReloc -- register relocation 226 stForward -- forwarding address 227 stStaticProc -- Static procedure 228 stConstant -- const 229 230 4) sc: storage class. The current storage classes are: 231 232 scText -- text symbol 233 scData -- initialized data symbol 234 scBss -- un-initialized data symbol 235 scRegister -- value of symbol is register number 236 scAbs -- value of symbol is absolute 237 scUndefined -- who knows? 238 scCdbLocal -- variable's value is IN se->va.?? 239 scBits -- this is a bit field 240 scCdbSystem -- value is IN debugger's address space 241 scRegImage -- register value saved on stack 242 scInfo -- symbol contains debugger information 243 scUserStruct -- addr in struct user for current process 244 scSData -- load time only small data 245 scSBss -- load time only small common 246 scRData -- load time only read only data 247 scVar -- Var parameter (fortranpascal) 248 scCommon -- common variable 249 scSCommon -- small common 250 scVarRegister -- Var parameter in a register 251 scVariant -- Variant record 252 scSUndefined -- small undefined(external) data 253 scInit -- .init section symbol 254 255 5) index: pointer to a local symbol or aux. entry. 256 257 For the following program: 258 259 #include <stdio.h> 260 261 main(){ 262 printf("Hello World!\n"); 263 return 0; 264 } 265 266 Mips-tdump produces the following information: 267 268 Global file header: 269 magic number 0x162 270 # sections 2 271 timestamp 645311799, Wed Jun 13 17:16:39 1990 272 symbolic header offset 284 273 symbolic header size 96 274 optional header 56 275 flags 0x0 276 277 Symbolic header, magic number = 0x7009, vstamp = 1.31: 278 279 Info Offset Number Bytes 280 ==== ====== ====== ===== 281 282 Line numbers 380 4 4 [13] 283 Dense numbers 0 0 0 284 Procedures Tables 384 1 52 285 Local Symbols 436 16 192 286 Optimization Symbols 0 0 0 287 Auxiliary Symbols 628 39 156 288 Local Strings 784 80 80 289 External Strings 864 144 144 290 File Tables 1008 2 144 291 Relative Files 0 0 0 292 External Symbols 1152 20 320 293 294 File #0, "hello2.c" 295 296 Name index = 1 Readin = No 297 Merge = No Endian = LITTLE 298 Debug level = G2 Language = C 299 Adr = 0x00000000 300 301 Info Start Number Size Offset 302 ==== ===== ====== ==== ====== 303 Local strings 0 15 15 784 304 Local symbols 0 6 72 436 305 Line numbers 0 13 13 380 306 Optimization symbols 0 0 0 0 307 Procedures 0 1 52 384 308 Auxiliary symbols 0 14 56 628 309 Relative Files 0 0 0 0 310 311 There are 6 local symbols, starting at 436 312 313 Symbol# 0: "hello2.c" 314 End+1 symbol = 6 315 String index = 1 316 Storage class = Text Index = 6 317 Symbol type = File Value = 0 318 319 Symbol# 1: "main" 320 End+1 symbol = 5 321 Type = int 322 String index = 10 323 Storage class = Text Index = 12 324 Symbol type = Proc Value = 0 325 326 Symbol# 2: "" 327 End+1 symbol = 4 328 String index = 0 329 Storage class = Text Index = 4 330 Symbol type = Block Value = 8 331 332 Symbol# 3: "" 333 First symbol = 2 334 String index = 0 335 Storage class = Text Index = 2 336 Symbol type = End Value = 28 337 338 Symbol# 4: "main" 339 First symbol = 1 340 String index = 10 341 Storage class = Text Index = 1 342 Symbol type = End Value = 52 343 344 Symbol# 5: "hello2.c" 345 First symbol = 0 346 String index = 1 347 Storage class = Text Index = 0 348 Symbol type = End Value = 0 349 350 There are 14 auxiliary table entries, starting at 628. 351 352 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 353 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 354 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0] 355 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0] 356 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 357 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0] 358 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0] 359 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0] 360 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0] 361 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0] 362 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0] 363 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0] 364 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0] 365 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0] 366 367 There are 1 procedure descriptor entries, starting at 0. 368 369 Procedure descriptor 0: 370 Name index = 10 Name = "main" 371 .mask 0x80000000,-4 .fmask 0x00000000,0 372 .frame $29,24,$31 373 Opt. start = -1 Symbols start = 1 374 First line # = 3 Last line # = 6 375 Line Offset = 0 Address = 0x00000000 376 377 There are 4 bytes holding line numbers, starting at 380. 378 Line 3, delta 0, count 2 379 Line 4, delta 1, count 3 380 Line 5, delta 1, count 2 381 Line 6, delta 1, count 6 382 383 File #1, "/usr/include/stdio.h" 384 385 Name index = 1 Readin = No 386 Merge = Yes Endian = LITTLE 387 Debug level = G2 Language = C 388 Adr = 0x00000000 389 390 Info Start Number Size Offset 391 ==== ===== ====== ==== ====== 392 Local strings 15 65 65 799 393 Local symbols 6 10 120 508 394 Line numbers 0 0 0 380 395 Optimization symbols 0 0 0 0 396 Procedures 1 0 0 436 397 Auxiliary symbols 14 25 100 684 398 Relative Files 0 0 0 0 399 400 There are 10 local symbols, starting at 442 401 402 Symbol# 0: "/usr/include/stdio.h" 403 End+1 symbol = 10 404 String index = 1 405 Storage class = Text Index = 10 406 Symbol type = File Value = 0 407 408 Symbol# 1: "_iobuf" 409 End+1 symbol = 9 410 String index = 22 411 Storage class = Info Index = 9 412 Symbol type = Block Value = 20 413 414 Symbol# 2: "_cnt" 415 Type = int 416 String index = 29 417 Storage class = Info Index = 4 418 Symbol type = Member Value = 0 419 420 Symbol# 3: "_ptr" 421 Type = ptr to char 422 String index = 34 423 Storage class = Info Index = 15 424 Symbol type = Member Value = 32 425 426 Symbol# 4: "_base" 427 Type = ptr to char 428 String index = 39 429 Storage class = Info Index = 16 430 Symbol type = Member Value = 64 431 432 Symbol# 5: "_bufsiz" 433 Type = int 434 String index = 45 435 Storage class = Info Index = 4 436 Symbol type = Member Value = 96 437 438 Symbol# 6: "_flag" 439 Type = short 440 String index = 53 441 Storage class = Info Index = 3 442 Symbol type = Member Value = 128 443 444 Symbol# 7: "_file" 445 Type = char 446 String index = 59 447 Storage class = Info Index = 2 448 Symbol type = Member Value = 144 449 450 Symbol# 8: "" 451 First symbol = 1 452 String index = 0 453 Storage class = Info Index = 1 454 Symbol type = End Value = 0 455 456 Symbol# 9: "/usr/include/stdio.h" 457 First symbol = 0 458 String index = 1 459 Storage class = Text Index = 0 460 Symbol type = End Value = 0 461 462 There are 25 auxiliary table entries, starting at 642. 463 464 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f] 465 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] 466 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0] 467 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0] 468 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1] 469 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] 470 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4] 471 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0] 472 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 473 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0] 474 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0] 475 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 476 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 477 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 478 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 479 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 480 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 481 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 482 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 483 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 484 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 485 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 486 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 487 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 488 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0] 489 490 There are 0 procedure descriptor entries, starting at 1. 491 492 There are 20 external symbols, starting at 1152 493 494 Symbol# 0: "_iob" 495 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 } 496 String index = 0 Ifd = 1 497 Storage class = Nil Index = 17 498 Symbol type = Global Value = 60 499 500 Symbol# 1: "fopen" 501 String index = 5 Ifd = 1 502 Storage class = Nil Index = 1048575 503 Symbol type = Proc Value = 0 504 505 Symbol# 2: "fdopen" 506 String index = 11 Ifd = 1 507 Storage class = Nil Index = 1048575 508 Symbol type = Proc Value = 0 509 510 Symbol# 3: "freopen" 511 String index = 18 Ifd = 1 512 Storage class = Nil Index = 1048575 513 Symbol type = Proc Value = 0 514 515 Symbol# 4: "popen" 516 String index = 26 Ifd = 1 517 Storage class = Nil Index = 1048575 518 Symbol type = Proc Value = 0 519 520 Symbol# 5: "tmpfile" 521 String index = 32 Ifd = 1 522 Storage class = Nil Index = 1048575 523 Symbol type = Proc Value = 0 524 525 Symbol# 6: "ftell" 526 String index = 40 Ifd = 1 527 Storage class = Nil Index = 1048575 528 Symbol type = Proc Value = 0 529 530 Symbol# 7: "rewind" 531 String index = 46 Ifd = 1 532 Storage class = Nil Index = 1048575 533 Symbol type = Proc Value = 0 534 535 Symbol# 8: "setbuf" 536 String index = 53 Ifd = 1 537 Storage class = Nil Index = 1048575 538 Symbol type = Proc Value = 0 539 540 Symbol# 9: "setbuffer" 541 String index = 60 Ifd = 1 542 Storage class = Nil Index = 1048575 543 Symbol type = Proc Value = 0 544 545 Symbol# 10: "setlinebuf" 546 String index = 70 Ifd = 1 547 Storage class = Nil Index = 1048575 548 Symbol type = Proc Value = 0 549 550 Symbol# 11: "fgets" 551 String index = 81 Ifd = 1 552 Storage class = Nil Index = 1048575 553 Symbol type = Proc Value = 0 554 555 Symbol# 12: "gets" 556 String index = 87 Ifd = 1 557 Storage class = Nil Index = 1048575 558 Symbol type = Proc Value = 0 559 560 Symbol# 13: "ctermid" 561 String index = 92 Ifd = 1 562 Storage class = Nil Index = 1048575 563 Symbol type = Proc Value = 0 564 565 Symbol# 14: "cuserid" 566 String index = 100 Ifd = 1 567 Storage class = Nil Index = 1048575 568 Symbol type = Proc Value = 0 569 570 Symbol# 15: "tempnam" 571 String index = 108 Ifd = 1 572 Storage class = Nil Index = 1048575 573 Symbol type = Proc Value = 0 574 575 Symbol# 16: "tmpnam" 576 String index = 116 Ifd = 1 577 Storage class = Nil Index = 1048575 578 Symbol type = Proc Value = 0 579 580 Symbol# 17: "sprintf" 581 String index = 123 Ifd = 1 582 Storage class = Nil Index = 1048575 583 Symbol type = Proc Value = 0 584 585 Symbol# 18: "main" 586 Type = int 587 String index = 131 Ifd = 0 588 Storage class = Text Index = 1 589 Symbol type = Proc Value = 0 590 591 Symbol# 19: "printf" 592 String index = 136 Ifd = 0 593 Storage class = Undefined Index = 1048575 594 Symbol type = Proc Value = 0 595 596 The following auxiliary table entries were unused: 597 598 #0 0 0x00000000 void 599 #2 8 0x00000008 char 600 #3 16 0x00000010 short 601 #4 24 0x00000018 int 602 #5 32 0x00000020 long 603 #6 40 0x00000028 float 604 #7 44 0x0000002c double 605 #8 12 0x0000000c unsigned char 606 #9 20 0x00000014 unsigned short 607 #10 28 0x0000001c unsigned int 608 #11 36 0x00000024 unsigned long 609 #14 0 0x00000000 void 610 #15 24 0x00000018 int 611 #19 32 0x00000020 long 612 #20 40 0x00000028 float 613 #21 44 0x0000002c double 614 #22 12 0x0000000c unsigned char 615 #23 20 0x00000014 unsigned short 616 #24 28 0x0000001c unsigned int 617 #25 36 0x00000024 unsigned long 618 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 } 619*/ 620 621/* Redefinition of storage classes as an enumeration for better 622 debugging. */ 623 624typedef enum sc { 625 sc_Nil = scNil, /* no storage class */ 626 sc_Text = scText, /* text symbol */ 627 sc_Data = scData, /* initialized data symbol */ 628 sc_Bss = scBss, /* un-initialized data symbol */ 629 sc_Register = scRegister, /* value of symbol is register number */ 630 sc_Abs = scAbs, /* value of symbol is absolute */ 631 sc_Undefined = scUndefined, /* who knows? */ 632 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */ 633 sc_Bits = scBits, /* this is a bit field */ 634 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */ 635 sc_RegImage = scRegImage, /* register value saved on stack */ 636 sc_Info = scInfo, /* symbol contains debugger information */ 637 sc_UserStruct = scUserStruct, /* addr in struct user for current process */ 638 sc_SData = scSData, /* load time only small data */ 639 sc_SBss = scSBss, /* load time only small common */ 640 sc_RData = scRData, /* load time only read only data */ 641 sc_Var = scVar, /* Var parameter (fortran,pascal) */ 642 sc_Common = scCommon, /* common variable */ 643 sc_SCommon = scSCommon, /* small common */ 644 sc_VarRegister = scVarRegister, /* Var parameter in a register */ 645 sc_Variant = scVariant, /* Variant record */ 646 sc_SUndefined = scSUndefined, /* small undefined(external) data */ 647 sc_Init = scInit, /* .init section symbol */ 648 sc_Max = scMax /* Max storage class+1 */ 649} sc_t; 650 651/* Redefinition of symbol type. */ 652 653typedef enum st { 654 st_Nil = stNil, /* Nuthin' special */ 655 st_Global = stGlobal, /* external symbol */ 656 st_Static = stStatic, /* static */ 657 st_Param = stParam, /* procedure argument */ 658 st_Local = stLocal, /* local variable */ 659 st_Label = stLabel, /* label */ 660 st_Proc = stProc, /* " " Procedure */ 661 st_Block = stBlock, /* beginning of block */ 662 st_End = stEnd, /* end (of anything) */ 663 st_Member = stMember, /* member (of anything - struct/union/enum */ 664 st_Typedef = stTypedef, /* type definition */ 665 st_File = stFile, /* file name */ 666 st_RegReloc = stRegReloc, /* register relocation */ 667 st_Forward = stForward, /* forwarding address */ 668 st_StaticProc = stStaticProc, /* load time only static procs */ 669 st_Constant = stConstant, /* const */ 670 st_Str = stStr, /* string */ 671 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */ 672 st_Expr = stExpr, /* 2+2 vs. 4 */ 673 st_Type = stType, /* post-coercion SER */ 674 st_Max = stMax /* max type+1 */ 675} st_t; 676 677/* Redefinition of type qualifiers. */ 678 679typedef enum tq { 680 tq_Nil = tqNil, /* bt is what you see */ 681 tq_Ptr = tqPtr, /* pointer */ 682 tq_Proc = tqProc, /* procedure */ 683 tq_Array = tqArray, /* duh */ 684 tq_Far = tqFar, /* longer addressing - 8086/8 land */ 685 tq_Vol = tqVol, /* volatile */ 686 tq_Max = tqMax /* Max type qualifier+1 */ 687} tq_t; 688 689/* Redefinition of basic types. */ 690 691typedef enum bt { 692 bt_Nil = btNil, /* undefined */ 693 bt_Adr = btAdr, /* address - integer same size as pointer */ 694 bt_Char = btChar, /* character */ 695 bt_UChar = btUChar, /* unsigned character */ 696 bt_Short = btShort, /* short */ 697 bt_UShort = btUShort, /* unsigned short */ 698 bt_Int = btInt, /* int */ 699 bt_UInt = btUInt, /* unsigned int */ 700 bt_Long = btLong, /* long */ 701 bt_ULong = btULong, /* unsigned long */ 702 bt_Float = btFloat, /* float (real) */ 703 bt_Double = btDouble, /* Double (real) */ 704 bt_Struct = btStruct, /* Structure (Record) */ 705 bt_Union = btUnion, /* Union (variant) */ 706 bt_Enum = btEnum, /* Enumerated */ 707 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */ 708 bt_Range = btRange, /* subrange of int */ 709 bt_Set = btSet, /* pascal sets */ 710 bt_Complex = btComplex, /* fortran complex */ 711 bt_DComplex = btDComplex, /* fortran double complex */ 712 bt_Indirect = btIndirect, /* forward or unnamed typedef */ 713 bt_FixedDec = btFixedDec, /* Fixed Decimal */ 714 bt_FloatDec = btFloatDec, /* Float Decimal */ 715 bt_String = btString, /* Varying Length Character String */ 716 bt_Bit = btBit, /* Aligned Bit String */ 717 bt_Picture = btPicture, /* Picture */ 718 bt_Void = btVoid, /* Void */ 719 bt_Max = btMax /* Max basic type+1 */ 720} bt_t; 721 722#define N_TQ itqMax 723 724/* States for whether to hash type or not. */ 725typedef enum hash_state { 726 hash_no = 0, /* Don't hash type */ 727 hash_yes = 1, /* OK to hash type, or use previous hash */ 728 hash_record = 2 /* OK to record hash, but don't use prev. */ 729} hash_state_t; 730 731/* Types of different sized allocation requests. */ 732enum alloc_type { 733 alloc_type_none, /* dummy value */ 734 alloc_type_scope, /* nested scopes linked list */ 735 alloc_type_vlinks, /* glue linking pages in varray */ 736 alloc_type_shash, /* string hash element */ 737 alloc_type_thash, /* type hash element */ 738 alloc_type_tag, /* struct/union/tag element */ 739 alloc_type_forward, /* element to hold unknown tag */ 740 alloc_type_thead, /* head of type hash list */ 741 alloc_type_varray, /* general varray allocation */ 742 alloc_type_lineno, /* line number list */ 743 alloc_type_last /* last+1 element for array bounds */ 744}; 745 746/* Types of auxiliary type information. */ 747enum aux_type { 748 aux_tir, /* TIR type information */ 749 aux_rndx, /* relative index into symbol table */ 750 aux_dnLow, /* low dimension */ 751 aux_dnHigh, /* high dimension */ 752 aux_isym, /* symbol table index (end of proc) */ 753 aux_iss, /* index into string space (not used) */ 754 aux_width, /* width for non-default sized struc fields */ 755 aux_count /* count of ranges for variant arm */ 756}; 757 758/* Structures to provide n-number of virtual arrays, each of which can 759 grow linearly, and which are written in the object file as 760 sequential pages. On systems with a BSD malloc, the 761 MAX_CLUSTER_PAGES should be 1 less than a power of two, since 762 malloc adds it's overhead, and rounds up to the next power of 2. 763 Pages are linked together via a linked list. 764 765 If PAGE_SIZE is > 4096, the string length in the shash_t structure 766 can't be represented (assuming there are strings > 4096 bytes). */ 767 768/* FIXME: Yes, there can be such strings while emitting C++ class debug 769 info. Templates are the offender here, the test case in question 770 having a mangled class name of 771 772 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\ 773 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey 774 775 Repeat that a couple dozen times while listing the class members and 776 you've got strings over 4k. Hack around this for now by increasing 777 the page size. A proper solution would abandon this structure scheme 778 certainly for very large strings, and possibly entirely. */ 779 780#ifndef PAGE_SIZE 781#define PAGE_SIZE (8*1024) /* size of varray pages */ 782#endif 783 784#define PAGE_USIZE ((unsigned long) PAGE_SIZE) 785 786#ifndef MAX_CLUSTER_PAGES /* # pages to get from system */ 787#define MAX_CLUSTER_PAGES 63 788#endif 789 790/* Linked list connecting separate page allocations. */ 791typedef struct vlinks { 792 struct vlinks *prev; /* previous set of pages */ 793 struct vlinks *next; /* next set of pages */ 794 union page *datum; /* start of page */ 795 unsigned long start_index; /* starting index # of page */ 796} vlinks_t; 797 798/* Virtual array header. */ 799typedef struct varray { 800 vlinks_t *first; /* first page link */ 801 vlinks_t *last; /* last page link */ 802 unsigned long num_allocated; /* # objects allocated */ 803 unsigned short object_size; /* size in bytes of each object */ 804 unsigned short objects_per_page; /* # objects that can fit on a page */ 805 unsigned short objects_last_page; /* # objects allocated on last page */ 806} varray_t; 807 808#ifndef MALLOC_CHECK 809#define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type)) 810#else 811#define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE) 812#endif 813 814#define INIT_VARRAY(type) { /* macro to initialize a varray */ \ 815 (vlinks_t *)0, /* first */ \ 816 (vlinks_t *)0, /* last */ \ 817 0, /* num_allocated */ \ 818 sizeof (type), /* object_size */ \ 819 OBJECTS_PER_PAGE (type), /* objects_per_page */ \ 820 OBJECTS_PER_PAGE (type), /* objects_last_page */ \ 821} 822 823/* Master type for indexes within the symbol table. */ 824typedef unsigned long symint_t; 825 826/* Linked list support for nested scopes (file, block, structure, etc.). */ 827typedef struct scope { 828 struct scope *prev; /* previous scope level */ 829 struct scope *free; /* free list pointer */ 830 struct localsym *lsym; /* pointer to local symbol node */ 831 st_t type; /* type of the node */ 832} scope_t; 833 834/* For a local symbol we store a gas symbol as well as the debugging 835 information we generate. The gas symbol will be NULL if this is 836 only a debugging symbol. */ 837typedef struct localsym { 838 const char *name; /* symbol name */ 839 symbolS *as_sym; /* symbol as seen by gas */ 840 bfd_vma addend; /* addend to as_sym value */ 841 struct efdr *file_ptr; /* file pointer */ 842 struct ecoff_proc *proc_ptr; /* proc pointer */ 843 struct localsym *begin_ptr; /* symbol at start of block */ 844 struct ecoff_aux *index_ptr; /* index value to be filled in */ 845 struct forward *forward_ref; /* forward references to this symbol */ 846 long sym_index; /* final symbol index */ 847 EXTR ecoff_sym; /* ECOFF debugging symbol */ 848} localsym_t; 849 850/* For aux information we keep the type and the data. */ 851typedef struct ecoff_aux { 852 enum aux_type type; /* aux type */ 853 AUXU data; /* aux data */ 854} aux_t; 855 856/* For a procedure we store the gas symbol as well as the PDR 857 debugging information. */ 858typedef struct ecoff_proc { 859 localsym_t *sym; /* associated symbol */ 860 PDR pdr; /* ECOFF debugging info */ 861} proc_t; 862 863/* Number of proc_t structures allocated. */ 864static unsigned long proc_cnt; 865 866/* Forward reference list for tags referenced, but not yet defined. */ 867typedef struct forward { 868 struct forward *next; /* next forward reference */ 869 struct forward *free; /* free list pointer */ 870 aux_t *ifd_ptr; /* pointer to store file index */ 871 aux_t *index_ptr; /* pointer to store symbol index */ 872} forward_t; 873 874/* Linked list support for tags. The first tag in the list is always 875 the current tag for that block. */ 876typedef struct tag { 877 struct tag *free; /* free list pointer */ 878 struct shash *hash_ptr; /* pointer to the hash table head */ 879 struct tag *same_name; /* tag with same name in outer scope */ 880 struct tag *same_block; /* next tag defined in the same block. */ 881 struct forward *forward_ref; /* list of forward references */ 882 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */ 883 symint_t ifd; /* file # tag defined in */ 884 localsym_t *sym; /* file's local symbols */ 885} tag_t; 886 887/* Head of a block's linked list of tags. */ 888typedef struct thead { 889 struct thead *prev; /* previous block */ 890 struct thead *free; /* free list pointer */ 891 struct tag *first_tag; /* first tag in block defined */ 892} thead_t; 893 894/* Union containing pointers to each the small structures which are freed up. */ 895typedef union small_free { 896 scope_t *f_scope; /* scope structure */ 897 thead_t *f_thead; /* tag head structure */ 898 tag_t *f_tag; /* tag element structure */ 899 forward_t *f_forward; /* forward tag reference */ 900} small_free_t; 901 902/* String hash table entry. */ 903 904typedef struct shash { 905 char *string; /* string we are hashing */ 906 symint_t indx; /* index within string table */ 907 EXTR *esym_ptr; /* global symbol pointer */ 908 localsym_t *sym_ptr; /* local symbol pointer */ 909 localsym_t *end_ptr; /* symbol pointer to end block */ 910 tag_t *tag_ptr; /* tag pointer */ 911 proc_t *proc_ptr; /* procedure descriptor pointer */ 912} shash_t; 913 914/* Type hash table support. The size of the hash table must fit 915 within a page with the other extended file descriptor information. 916 Because unique types which are hashed are fewer in number than 917 strings, we use a smaller hash value. */ 918 919#define HASHBITS 30 920 921#ifndef THASH_SIZE 922#define THASH_SIZE 113 923#endif 924 925typedef struct thash { 926 struct thash *next; /* next hash value */ 927 AUXU type; /* type we are hashing */ 928 symint_t indx; /* index within string table */ 929} thash_t; 930 931/* Extended file descriptor that contains all of the support necessary 932 to add things to each file separately. */ 933typedef struct efdr { 934 FDR fdr; /* File header to be written out */ 935 FDR *orig_fdr; /* original file header */ 936 char *name; /* filename */ 937 int fake; /* whether this is faked .file */ 938 symint_t void_type; /* aux. pointer to 'void' type */ 939 symint_t int_type; /* aux. pointer to 'int' type */ 940 scope_t *cur_scope; /* current nested scopes */ 941 symint_t file_index; /* current file number */ 942 int nested_scopes; /* # nested scopes */ 943 varray_t strings; /* local strings */ 944 varray_t symbols; /* local symbols */ 945 varray_t procs; /* procedures */ 946 varray_t aux_syms; /* auxiliary symbols */ 947 struct efdr *next_file; /* next file descriptor */ 948 /* string/type hash tables */ 949 struct hash_control *str_hash; /* string hash table */ 950 thash_t *thash_head[THASH_SIZE]; 951} efdr_t; 952 953/* Pre-initialized extended file structure. */ 954static const efdr_t init_file = { 955 { /* FDR structure */ 956 0, /* adr: memory address of beginning of file */ 957 0, /* rss: file name (of source, if known) */ 958 0, /* issBase: file's string space */ 959 0, /* cbSs: number of bytes in the ss */ 960 0, /* isymBase: beginning of symbols */ 961 0, /* csym: count file's of symbols */ 962 0, /* ilineBase: file's line symbols */ 963 0, /* cline: count of file's line symbols */ 964 0, /* ioptBase: file's optimization entries */ 965 0, /* copt: count of file's optimization entries */ 966 0, /* ipdFirst: start of procedures for this file */ 967 0, /* cpd: count of procedures for this file */ 968 0, /* iauxBase: file's auxiliary entries */ 969 0, /* caux: count of file's auxiliary entries */ 970 0, /* rfdBase: index into the file indirect table */ 971 0, /* crfd: count file indirect entries */ 972 langC, /* lang: language for this file */ 973 1, /* fMerge: whether this file can be merged */ 974 0, /* fReadin: true if read in (not just created) */ 975 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */ 976 GLEVEL_2, /* glevel: level this file was compiled with */ 977 0, /* reserved: reserved for future use */ 978 0, /* cbLineOffset: byte offset from header for this file ln's */ 979 0, /* cbLine: size of lines for this file */ 980 }, 981 982 (FDR *)0, /* orig_fdr: original file header pointer */ 983 (char *)0, /* name: pointer to filename */ 984 0, /* fake: whether this is a faked .file */ 985 0, /* void_type: ptr to aux node for void type */ 986 0, /* int_type: ptr to aux node for int type */ 987 (scope_t *)0, /* cur_scope: current scope being processed */ 988 0, /* file_index: current file # */ 989 0, /* nested_scopes: # nested scopes */ 990 INIT_VARRAY (char), /* strings: local string varray */ 991 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */ 992 INIT_VARRAY (proc_t), /* procs: procedure varray */ 993 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */ 994 995 (struct efdr *)0, /* next_file: next file structure */ 996 997 (struct hash_control *)0, /* str_hash: string hash table */ 998 { 0 }, /* thash_head: type hash table */ 999}; 1000 1001static efdr_t *first_file; /* first file descriptor */ 1002static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */ 1003 1004/* Line number information is kept in a list until the assembly is 1005 finished. */ 1006typedef struct lineno_list { 1007 struct lineno_list *next; /* next element in list */ 1008 efdr_t *file; /* file this line is in */ 1009 proc_t *proc; /* procedure this line is in */ 1010 fragS *frag; /* fragment this line number is in */ 1011 unsigned long paddr; /* offset within fragment */ 1012 long lineno; /* actual line number */ 1013} lineno_list_t; 1014 1015static lineno_list_t *first_lineno; 1016static lineno_list_t *last_lineno; 1017static lineno_list_t **last_lineno_ptr = &first_lineno; 1018 1019/* Sometimes there will be some .loc statements before a .ent. We 1020 keep them in this list so that we can fill in the procedure pointer 1021 after we see the .ent. */ 1022static lineno_list_t *noproc_lineno; 1023 1024/* Union of various things that are held in pages. */ 1025typedef union page { 1026 char byte [ PAGE_SIZE ]; 1027 unsigned char ubyte [ PAGE_SIZE ]; 1028 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ]; 1029 FDR ofile [ PAGE_SIZE / sizeof (FDR) ]; 1030 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ]; 1031 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ]; 1032 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ]; 1033 DNR dense [ PAGE_SIZE / sizeof (DNR) ]; 1034 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ]; 1035 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ]; 1036 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ]; 1037 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ]; 1038 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ]; 1039 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ]; 1040 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ]; 1041 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ]; 1042} page_type; 1043 1044/* Structure holding allocation information for small sized structures. */ 1045typedef struct alloc_info { 1046 char *alloc_name; /* name of this allocation type (must be first) */ 1047 page_type *cur_page; /* current page being allocated from */ 1048 small_free_t free_list; /* current free list if any */ 1049 int unallocated; /* number of elements unallocated on page */ 1050 int total_alloc; /* total number of allocations */ 1051 int total_free; /* total number of frees */ 1052 int total_pages; /* total number of pages allocated */ 1053} alloc_info_t; 1054 1055/* Type information collected together. */ 1056typedef struct type_info { 1057 bt_t basic_type; /* basic type */ 1058 int orig_type; /* original COFF-based type */ 1059 int num_tq; /* # type qualifiers */ 1060 int num_dims; /* # dimensions */ 1061 int num_sizes; /* # sizes */ 1062 int extra_sizes; /* # extra sizes not tied with dims */ 1063 tag_t * tag_ptr; /* tag pointer */ 1064 int bitfield; /* symbol is a bitfield */ 1065 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/ 1066 symint_t dimensions [N_TQ]; /* dimensions for each array */ 1067 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of 1068 struct/union/enum + bitfield size */ 1069} type_info_t; 1070 1071/* Pre-initialized type_info struct. */ 1072static const type_info_t type_info_init = { 1073 bt_Nil, /* basic type */ 1074 T_NULL, /* original COFF-based type */ 1075 0, /* # type qualifiers */ 1076 0, /* # dimensions */ 1077 0, /* # sizes */ 1078 0, /* sizes not tied with dims */ 1079 NULL, /* ptr to tag */ 1080 0, /* bitfield */ 1081 { /* type qualifiers */ 1082 tq_Nil, 1083 tq_Nil, 1084 tq_Nil, 1085 tq_Nil, 1086 tq_Nil, 1087 tq_Nil, 1088 }, 1089 { /* dimensions */ 1090 0, 1091 0, 1092 0, 1093 0, 1094 0, 1095 0 1096 }, 1097 { /* sizes */ 1098 0, 1099 0, 1100 0, 1101 0, 1102 0, 1103 0, 1104 0, 1105 0, 1106 }, 1107}; 1108 1109/* Global hash table for the tags table and global table for file 1110 descriptors. */ 1111 1112static varray_t file_desc = INIT_VARRAY (efdr_t); 1113 1114static struct hash_control *tag_hash; 1115 1116/* Static types for int and void. Also, remember the last function's 1117 type (which is set up when we encounter the declaration for the 1118 function, and used when the end block for the function is emitted. */ 1119 1120static type_info_t int_type_info; 1121static type_info_t void_type_info; 1122static type_info_t last_func_type_info; 1123static symbolS *last_func_sym_value; 1124 1125/* Convert COFF basic type to ECOFF basic type. The T_NULL type 1126 really should use bt_Void, but this causes the current ecoff GDB to 1127 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS 1128 2.0) doesn't understand it, even though the compiler generates it. 1129 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler 1130 suite, but for now go with what works. 1131 1132 It would make sense for the .type and .scl directives to use the 1133 ECOFF numbers directly, rather than using the COFF numbers and 1134 mapping them. Unfortunately, this is historically what mips-tfile 1135 expects, and changing gcc now would be a considerable pain (the 1136 native compiler generates debugging information internally, rather 1137 than via the assembler, so it will never use .type or .scl). */ 1138 1139static const bt_t map_coff_types[] = { 1140 bt_Nil, /* T_NULL */ 1141 bt_Nil, /* T_ARG */ 1142 bt_Char, /* T_CHAR */ 1143 bt_Short, /* T_SHORT */ 1144 bt_Int, /* T_INT */ 1145 bt_Long, /* T_LONG */ 1146 bt_Float, /* T_FLOAT */ 1147 bt_Double, /* T_DOUBLE */ 1148 bt_Struct, /* T_STRUCT */ 1149 bt_Union, /* T_UNION */ 1150 bt_Enum, /* T_ENUM */ 1151 bt_Enum, /* T_MOE */ 1152 bt_UChar, /* T_UCHAR */ 1153 bt_UShort, /* T_USHORT */ 1154 bt_UInt, /* T_UINT */ 1155 bt_ULong /* T_ULONG */ 1156}; 1157 1158/* Convert COFF storage class to ECOFF storage class. */ 1159static const sc_t map_coff_storage[] = { 1160 sc_Nil, /* 0: C_NULL */ 1161 sc_Abs, /* 1: C_AUTO auto var */ 1162 sc_Undefined, /* 2: C_EXT external */ 1163 sc_Data, /* 3: C_STAT static */ 1164 sc_Register, /* 4: C_REG register */ 1165 sc_Undefined, /* 5: C_EXTDEF ??? */ 1166 sc_Text, /* 6: C_LABEL label */ 1167 sc_Text, /* 7: C_ULABEL user label */ 1168 sc_Info, /* 8: C_MOS member of struct */ 1169 sc_Abs, /* 9: C_ARG argument */ 1170 sc_Info, /* 10: C_STRTAG struct tag */ 1171 sc_Info, /* 11: C_MOU member of union */ 1172 sc_Info, /* 12: C_UNTAG union tag */ 1173 sc_Info, /* 13: C_TPDEF typedef */ 1174 sc_Data, /* 14: C_USTATIC ??? */ 1175 sc_Info, /* 15: C_ENTAG enum tag */ 1176 sc_Info, /* 16: C_MOE member of enum */ 1177 sc_Register, /* 17: C_REGPARM register parameter */ 1178 sc_Bits, /* 18; C_FIELD bitfield */ 1179 sc_Nil, /* 19 */ 1180 sc_Nil, /* 20 */ 1181 sc_Nil, /* 21 */ 1182 sc_Nil, /* 22 */ 1183 sc_Nil, /* 23 */ 1184 sc_Nil, /* 24 */ 1185 sc_Nil, /* 25 */ 1186 sc_Nil, /* 26 */ 1187 sc_Nil, /* 27 */ 1188 sc_Nil, /* 28 */ 1189 sc_Nil, /* 29 */ 1190 sc_Nil, /* 30 */ 1191 sc_Nil, /* 31 */ 1192 sc_Nil, /* 32 */ 1193 sc_Nil, /* 33 */ 1194 sc_Nil, /* 34 */ 1195 sc_Nil, /* 35 */ 1196 sc_Nil, /* 36 */ 1197 sc_Nil, /* 37 */ 1198 sc_Nil, /* 38 */ 1199 sc_Nil, /* 39 */ 1200 sc_Nil, /* 40 */ 1201 sc_Nil, /* 41 */ 1202 sc_Nil, /* 42 */ 1203 sc_Nil, /* 43 */ 1204 sc_Nil, /* 44 */ 1205 sc_Nil, /* 45 */ 1206 sc_Nil, /* 46 */ 1207 sc_Nil, /* 47 */ 1208 sc_Nil, /* 48 */ 1209 sc_Nil, /* 49 */ 1210 sc_Nil, /* 50 */ 1211 sc_Nil, /* 51 */ 1212 sc_Nil, /* 52 */ 1213 sc_Nil, /* 53 */ 1214 sc_Nil, /* 54 */ 1215 sc_Nil, /* 55 */ 1216 sc_Nil, /* 56 */ 1217 sc_Nil, /* 57 */ 1218 sc_Nil, /* 58 */ 1219 sc_Nil, /* 59 */ 1220 sc_Nil, /* 60 */ 1221 sc_Nil, /* 61 */ 1222 sc_Nil, /* 62 */ 1223 sc_Nil, /* 63 */ 1224 sc_Nil, /* 64 */ 1225 sc_Nil, /* 65 */ 1226 sc_Nil, /* 66 */ 1227 sc_Nil, /* 67 */ 1228 sc_Nil, /* 68 */ 1229 sc_Nil, /* 69 */ 1230 sc_Nil, /* 70 */ 1231 sc_Nil, /* 71 */ 1232 sc_Nil, /* 72 */ 1233 sc_Nil, /* 73 */ 1234 sc_Nil, /* 74 */ 1235 sc_Nil, /* 75 */ 1236 sc_Nil, /* 76 */ 1237 sc_Nil, /* 77 */ 1238 sc_Nil, /* 78 */ 1239 sc_Nil, /* 79 */ 1240 sc_Nil, /* 80 */ 1241 sc_Nil, /* 81 */ 1242 sc_Nil, /* 82 */ 1243 sc_Nil, /* 83 */ 1244 sc_Nil, /* 84 */ 1245 sc_Nil, /* 85 */ 1246 sc_Nil, /* 86 */ 1247 sc_Nil, /* 87 */ 1248 sc_Nil, /* 88 */ 1249 sc_Nil, /* 89 */ 1250 sc_Nil, /* 90 */ 1251 sc_Nil, /* 91 */ 1252 sc_Nil, /* 92 */ 1253 sc_Nil, /* 93 */ 1254 sc_Nil, /* 94 */ 1255 sc_Nil, /* 95 */ 1256 sc_Nil, /* 96 */ 1257 sc_Nil, /* 97 */ 1258 sc_Nil, /* 98 */ 1259 sc_Nil, /* 99 */ 1260 sc_Text, /* 100: C_BLOCK block start/end */ 1261 sc_Text, /* 101: C_FCN function start/end */ 1262 sc_Info, /* 102: C_EOS end of struct/union/enum */ 1263 sc_Nil, /* 103: C_FILE file start */ 1264 sc_Nil, /* 104: C_LINE line number */ 1265 sc_Nil, /* 105: C_ALIAS combined type info */ 1266 sc_Nil, /* 106: C_HIDDEN ??? */ 1267}; 1268 1269/* Convert COFF storage class to ECOFF symbol type. */ 1270static const st_t map_coff_sym_type[] = { 1271 st_Nil, /* 0: C_NULL */ 1272 st_Local, /* 1: C_AUTO auto var */ 1273 st_Global, /* 2: C_EXT external */ 1274 st_Static, /* 3: C_STAT static */ 1275 st_Local, /* 4: C_REG register */ 1276 st_Global, /* 5: C_EXTDEF ??? */ 1277 st_Label, /* 6: C_LABEL label */ 1278 st_Label, /* 7: C_ULABEL user label */ 1279 st_Member, /* 8: C_MOS member of struct */ 1280 st_Param, /* 9: C_ARG argument */ 1281 st_Block, /* 10: C_STRTAG struct tag */ 1282 st_Member, /* 11: C_MOU member of union */ 1283 st_Block, /* 12: C_UNTAG union tag */ 1284 st_Typedef, /* 13: C_TPDEF typedef */ 1285 st_Static, /* 14: C_USTATIC ??? */ 1286 st_Block, /* 15: C_ENTAG enum tag */ 1287 st_Member, /* 16: C_MOE member of enum */ 1288 st_Param, /* 17: C_REGPARM register parameter */ 1289 st_Member, /* 18; C_FIELD bitfield */ 1290 st_Nil, /* 19 */ 1291 st_Nil, /* 20 */ 1292 st_Nil, /* 21 */ 1293 st_Nil, /* 22 */ 1294 st_Nil, /* 23 */ 1295 st_Nil, /* 24 */ 1296 st_Nil, /* 25 */ 1297 st_Nil, /* 26 */ 1298 st_Nil, /* 27 */ 1299 st_Nil, /* 28 */ 1300 st_Nil, /* 29 */ 1301 st_Nil, /* 30 */ 1302 st_Nil, /* 31 */ 1303 st_Nil, /* 32 */ 1304 st_Nil, /* 33 */ 1305 st_Nil, /* 34 */ 1306 st_Nil, /* 35 */ 1307 st_Nil, /* 36 */ 1308 st_Nil, /* 37 */ 1309 st_Nil, /* 38 */ 1310 st_Nil, /* 39 */ 1311 st_Nil, /* 40 */ 1312 st_Nil, /* 41 */ 1313 st_Nil, /* 42 */ 1314 st_Nil, /* 43 */ 1315 st_Nil, /* 44 */ 1316 st_Nil, /* 45 */ 1317 st_Nil, /* 46 */ 1318 st_Nil, /* 47 */ 1319 st_Nil, /* 48 */ 1320 st_Nil, /* 49 */ 1321 st_Nil, /* 50 */ 1322 st_Nil, /* 51 */ 1323 st_Nil, /* 52 */ 1324 st_Nil, /* 53 */ 1325 st_Nil, /* 54 */ 1326 st_Nil, /* 55 */ 1327 st_Nil, /* 56 */ 1328 st_Nil, /* 57 */ 1329 st_Nil, /* 58 */ 1330 st_Nil, /* 59 */ 1331 st_Nil, /* 60 */ 1332 st_Nil, /* 61 */ 1333 st_Nil, /* 62 */ 1334 st_Nil, /* 63 */ 1335 st_Nil, /* 64 */ 1336 st_Nil, /* 65 */ 1337 st_Nil, /* 66 */ 1338 st_Nil, /* 67 */ 1339 st_Nil, /* 68 */ 1340 st_Nil, /* 69 */ 1341 st_Nil, /* 70 */ 1342 st_Nil, /* 71 */ 1343 st_Nil, /* 72 */ 1344 st_Nil, /* 73 */ 1345 st_Nil, /* 74 */ 1346 st_Nil, /* 75 */ 1347 st_Nil, /* 76 */ 1348 st_Nil, /* 77 */ 1349 st_Nil, /* 78 */ 1350 st_Nil, /* 79 */ 1351 st_Nil, /* 80 */ 1352 st_Nil, /* 81 */ 1353 st_Nil, /* 82 */ 1354 st_Nil, /* 83 */ 1355 st_Nil, /* 84 */ 1356 st_Nil, /* 85 */ 1357 st_Nil, /* 86 */ 1358 st_Nil, /* 87 */ 1359 st_Nil, /* 88 */ 1360 st_Nil, /* 89 */ 1361 st_Nil, /* 90 */ 1362 st_Nil, /* 91 */ 1363 st_Nil, /* 92 */ 1364 st_Nil, /* 93 */ 1365 st_Nil, /* 94 */ 1366 st_Nil, /* 95 */ 1367 st_Nil, /* 96 */ 1368 st_Nil, /* 97 */ 1369 st_Nil, /* 98 */ 1370 st_Nil, /* 99 */ 1371 st_Block, /* 100: C_BLOCK block start/end */ 1372 st_Proc, /* 101: C_FCN function start/end */ 1373 st_End, /* 102: C_EOS end of struct/union/enum */ 1374 st_File, /* 103: C_FILE file start */ 1375 st_Nil, /* 104: C_LINE line number */ 1376 st_Nil, /* 105: C_ALIAS combined type info */ 1377 st_Nil, /* 106: C_HIDDEN ??? */ 1378}; 1379 1380/* Keep track of different sized allocation requests. */ 1381static alloc_info_t alloc_counts[(int) alloc_type_last]; 1382 1383/* Record whether we have seen any debugging information. */ 1384int ecoff_debugging_seen = 0; 1385 1386/* Various statics. */ 1387static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */ 1388static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */ 1389static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */ 1390static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */ 1391static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */ 1392#ifdef ECOFF_DEBUG 1393static int debug = 0; /* trace functions */ 1394#endif 1395static int stabs_seen = 0; /* != 0 if stabs have been seen */ 1396 1397static int current_file_idx; 1398static const char *current_stabs_filename; 1399 1400/* Pseudo symbol to use when putting stabs into the symbol table. */ 1401#ifndef STABS_SYMBOL 1402#define STABS_SYMBOL "@stabs" 1403#endif 1404 1405static char stabs_symbol[] = STABS_SYMBOL; 1406 1407/* Prototypes for functions defined in this file. */ 1408 1409static void add_varray_page (varray_t *vp); 1410static symint_t add_string (varray_t *vp, 1411 struct hash_control *hash_tbl, 1412 const char *str, 1413 shash_t **ret_hash); 1414static localsym_t *add_ecoff_symbol (const char *str, st_t type, 1415 sc_t storage, symbolS *sym, 1416 bfd_vma addend, symint_t value, 1417 symint_t indx); 1418static symint_t add_aux_sym_symint (symint_t aux_word); 1419static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index); 1420static symint_t add_aux_sym_tir (type_info_t *t, 1421 hash_state_t state, 1422 thash_t **hash_tbl); 1423static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type); 1424static void add_unknown_tag (tag_t *ptag); 1425static void add_procedure (char *func, int aent); 1426static void add_file (const char *file_name, int indx, int fake); 1427#ifdef ECOFF_DEBUG 1428static char *sc_to_string (sc_t storage_class); 1429static char *st_to_string (st_t symbol_type); 1430#endif 1431static void mark_stabs (int); 1432static char *ecoff_add_bytes (char **buf, char **bufend, 1433 char *bufptr, unsigned long need); 1434static unsigned long ecoff_padding_adjust 1435 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1436 unsigned long offset, char **bufptrptr); 1437static unsigned long ecoff_build_lineno 1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1439 unsigned long offset, long *linecntptr); 1440static unsigned long ecoff_build_symbols 1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1442 unsigned long offset); 1443static unsigned long ecoff_build_procs 1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1445 unsigned long offset); 1446static unsigned long ecoff_build_aux 1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1448 unsigned long offset); 1449static unsigned long ecoff_build_strings (char **buf, char **bufend, 1450 unsigned long offset, 1451 varray_t *vp); 1452static unsigned long ecoff_build_ss 1453 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1454 unsigned long offset); 1455static unsigned long ecoff_build_fdr 1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend, 1457 unsigned long offset); 1458static void ecoff_setup_ext (void); 1459static page_type *allocate_cluster (unsigned long npages); 1460static page_type *allocate_page (void); 1461static scope_t *allocate_scope (void); 1462static void free_scope (scope_t *ptr); 1463static vlinks_t *allocate_vlinks (void); 1464static shash_t *allocate_shash (void); 1465static thash_t *allocate_thash (void); 1466static tag_t *allocate_tag (void); 1467static void free_tag (tag_t *ptr); 1468static forward_t *allocate_forward (void); 1469static thead_t *allocate_thead (void); 1470static void free_thead (thead_t *ptr); 1471static lineno_list_t *allocate_lineno_list (void); 1472 1473/* This function should be called when the assembler starts up. */ 1474 1475void 1476ecoff_read_begin_hook (void) 1477{ 1478 tag_hash = hash_new (); 1479 top_tag_head = allocate_thead (); 1480 top_tag_head->first_tag = (tag_t *) NULL; 1481 top_tag_head->free = (thead_t *) NULL; 1482 top_tag_head->prev = cur_tag_head; 1483 cur_tag_head = top_tag_head; 1484} 1485 1486/* This function should be called when a symbol is created. */ 1487 1488void 1489ecoff_symbol_new_hook (symbolS *symbolP) 1490{ 1491 OBJ_SYMFIELD_TYPE *obj; 1492 1493 /* Make sure that we have a file pointer, but only if we have seen a 1494 file. If we haven't seen a file, then this is a probably special 1495 symbol created by md_begin which may required special handling at 1496 some point. Creating a dummy file with a dummy name is certainly 1497 wrong. */ 1498 if (cur_file_ptr == (efdr_t *) NULL 1499 && seen_at_least_1_file ()) 1500 add_file ((const char *) NULL, 0, 1); 1501 obj = symbol_get_obj (symbolP); 1502 obj->ecoff_file = cur_file_ptr; 1503 obj->ecoff_symbol = NULL; 1504 obj->ecoff_extern_size = 0; 1505} 1506 1507void 1508ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP) 1509{ 1510 OBJ_SYMFIELD_TYPE *n, *o; 1511 1512 n = symbol_get_obj (newsymP); 1513 o = symbol_get_obj (orgsymP); 1514 memcpy (n, o, sizeof *n); 1515} 1516 1517/* Add a page to a varray object. */ 1518 1519static void 1520add_varray_page (varray_t *vp /* varray to add page to */) 1521{ 1522 vlinks_t *new_links = allocate_vlinks (); 1523 1524#ifdef MALLOC_CHECK 1525 if (vp->object_size > 1) 1526 new_links->datum = (page_type *) xcalloc (1, vp->object_size); 1527 else 1528#endif 1529 new_links->datum = allocate_page (); 1530 1531 alloc_counts[(int) alloc_type_varray].total_alloc++; 1532 alloc_counts[(int) alloc_type_varray].total_pages++; 1533 1534 new_links->start_index = vp->num_allocated; 1535 vp->objects_last_page = 0; 1536 1537 if (vp->first == (vlinks_t *) NULL) /* first allocation? */ 1538 vp->first = vp->last = new_links; 1539 else 1540 { /* 2nd or greater allocation */ 1541 new_links->prev = vp->last; 1542 vp->last->next = new_links; 1543 vp->last = new_links; 1544 } 1545} 1546 1547/* Add a string (and null pad) to one of the string tables. */ 1548 1549static symint_t 1550add_string (varray_t *vp, /* string obstack */ 1551 struct hash_control *hash_tbl, /* ptr to hash table */ 1552 const char *str, /* string */ 1553 shash_t **ret_hash /* return hash pointer */) 1554{ 1555 unsigned long len = strlen (str); 1556 shash_t *hash_ptr; 1557 1558 if (len >= PAGE_USIZE) 1559 as_fatal (_("string too big (%lu bytes)"), len); 1560 1561 hash_ptr = (shash_t *) hash_find (hash_tbl, str); 1562 if (hash_ptr == (shash_t *) NULL) 1563 { 1564 const char *err; 1565 1566 if (vp->objects_last_page + len >= PAGE_USIZE) 1567 { 1568 vp->num_allocated = 1569 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE; 1570 add_varray_page (vp); 1571 } 1572 1573 hash_ptr = allocate_shash (); 1574 hash_ptr->indx = vp->num_allocated; 1575 1576 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page]; 1577 1578 vp->objects_last_page += len + 1; 1579 vp->num_allocated += len + 1; 1580 1581 strcpy (hash_ptr->string, str); 1582 1583 err = hash_insert (hash_tbl, str, (char *) hash_ptr); 1584 if (err) 1585 as_fatal (_("inserting \"%s\" into string hash table: %s"), 1586 str, err); 1587 } 1588 1589 if (ret_hash != (shash_t **) NULL) 1590 *ret_hash = hash_ptr; 1591 1592 return hash_ptr->indx; 1593} 1594 1595/* Add debugging information for a symbol. */ 1596 1597static localsym_t * 1598add_ecoff_symbol (const char *str, /* symbol name */ 1599 st_t type, /* symbol type */ 1600 sc_t storage, /* storage class */ 1601 symbolS *sym_value, /* associated symbol. */ 1602 bfd_vma addend, /* addend to sym_value. */ 1603 symint_t value, /* value of symbol */ 1604 symint_t indx /* index to local/aux. syms */) 1605{ 1606 localsym_t *psym; 1607 scope_t *pscope; 1608 thead_t *ptag_head; 1609 tag_t *ptag; 1610 tag_t *ptag_next; 1611 varray_t *vp; 1612 int scope_delta = 0; 1613 shash_t *hash_ptr = (shash_t *) NULL; 1614 1615 if (cur_file_ptr == (efdr_t *) NULL) 1616 as_fatal (_("no current file pointer")); 1617 1618 vp = &cur_file_ptr->symbols; 1619 1620 if (vp->objects_last_page == vp->objects_per_page) 1621 add_varray_page (vp); 1622 1623 psym = &vp->last->datum->sym[vp->objects_last_page++]; 1624 1625 if (str == (const char *) NULL && sym_value != (symbolS *) NULL) 1626 psym->name = S_GET_NAME (sym_value); 1627 else 1628 psym->name = str; 1629 psym->as_sym = sym_value; 1630 if (sym_value != (symbolS *) NULL) 1631 symbol_get_obj (sym_value)->ecoff_symbol = psym; 1632 psym->addend = addend; 1633 psym->file_ptr = cur_file_ptr; 1634 psym->proc_ptr = cur_proc_ptr; 1635 psym->begin_ptr = (localsym_t *) NULL; 1636 psym->index_ptr = (aux_t *) NULL; 1637 psym->forward_ref = (forward_t *) NULL; 1638 psym->sym_index = -1; 1639 memset (&psym->ecoff_sym, 0, sizeof (EXTR)); 1640 psym->ecoff_sym.asym.value = value; 1641 psym->ecoff_sym.asym.st = (unsigned) type; 1642 psym->ecoff_sym.asym.sc = (unsigned) storage; 1643 psym->ecoff_sym.asym.index = indx; 1644 1645 /* If there is an associated symbol, we wait until the end of the 1646 assembly before deciding where to put the name (it may be just an 1647 external symbol). Otherwise, this is just a debugging symbol and 1648 the name should go with the current file. */ 1649 if (sym_value == (symbolS *) NULL) 1650 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL) 1651 ? 0 1652 : add_string (&cur_file_ptr->strings, 1653 cur_file_ptr->str_hash, 1654 str, 1655 &hash_ptr)); 1656 1657 ++vp->num_allocated; 1658 1659 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym)) 1660 return psym; 1661 1662 /* Save the symbol within the hash table if this is a static 1663 item, and it has a name. */ 1664 if (hash_ptr != (shash_t *) NULL 1665 && (type == st_Global || type == st_Static || type == st_Label 1666 || type == st_Proc || type == st_StaticProc)) 1667 hash_ptr->sym_ptr = psym; 1668 1669 /* push or pop a scope if appropriate. */ 1670 switch (type) 1671 { 1672 default: 1673 break; 1674 1675 case st_File: /* beginning of file */ 1676 case st_Proc: /* procedure */ 1677 case st_StaticProc: /* static procedure */ 1678 case st_Block: /* begin scope */ 1679 pscope = allocate_scope (); 1680 pscope->prev = cur_file_ptr->cur_scope; 1681 pscope->lsym = psym; 1682 pscope->type = type; 1683 cur_file_ptr->cur_scope = pscope; 1684 1685 if (type != st_File) 1686 scope_delta = 1; 1687 1688 /* For every block type except file, struct, union, or 1689 enumeration blocks, push a level on the tag stack. We omit 1690 file types, so that tags can span file boundaries. */ 1691 if (type != st_File && storage != sc_Info) 1692 { 1693 ptag_head = allocate_thead (); 1694 ptag_head->first_tag = 0; 1695 ptag_head->prev = cur_tag_head; 1696 cur_tag_head = ptag_head; 1697 } 1698 break; 1699 1700 case st_End: 1701 pscope = cur_file_ptr->cur_scope; 1702 if (pscope == (scope_t *) NULL) 1703 as_fatal (_("too many st_End's")); 1704 else 1705 { 1706 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st; 1707 1708 psym->begin_ptr = pscope->lsym; 1709 1710 if (begin_type != st_File) 1711 scope_delta = -1; 1712 1713 /* Except for file, structure, union, or enumeration end 1714 blocks remove all tags created within this scope. */ 1715 if (begin_type != st_File && storage != sc_Info) 1716 { 1717 ptag_head = cur_tag_head; 1718 cur_tag_head = ptag_head->prev; 1719 1720 for (ptag = ptag_head->first_tag; 1721 ptag != (tag_t *) NULL; 1722 ptag = ptag_next) 1723 { 1724 if (ptag->forward_ref != (forward_t *) NULL) 1725 add_unknown_tag (ptag); 1726 1727 ptag_next = ptag->same_block; 1728 ptag->hash_ptr->tag_ptr = ptag->same_name; 1729 free_tag (ptag); 1730 } 1731 1732 free_thead (ptag_head); 1733 } 1734 1735 cur_file_ptr->cur_scope = pscope->prev; 1736 1737 /* block begin gets next sym #. This is set when we know 1738 the symbol index value. */ 1739 1740 /* Functions push two or more aux words as follows: 1741 1st word: index+1 of the end symbol (filled in later). 1742 2nd word: type of the function (plus any aux words needed). 1743 Also, tie the external pointer back to the function begin symbol. */ 1744 if (begin_type != st_File && begin_type != st_Block) 1745 { 1746 symint_t ty; 1747 varray_t *svp = &cur_file_ptr->aux_syms; 1748 1749 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0); 1750 pscope->lsym->index_ptr = 1751 &svp->last->datum->aux[svp->objects_last_page - 1]; 1752 ty = add_aux_sym_tir (&last_func_type_info, 1753 hash_no, 1754 &cur_file_ptr->thash_head[0]); 1755 (void) ty; 1756/* This seems to be unnecessary. I'm not even sure what it is 1757 * intended to do. It's from mips-tfile. 1758 * if (last_func_sym_value != (symbolS *) NULL) 1759 * { 1760 * last_func_sym_value->ifd = cur_file_ptr->file_index; 1761 * last_func_sym_value->index = ty; 1762 * } 1763 */ 1764 } 1765 1766 free_scope (pscope); 1767 } 1768 } 1769 1770 cur_file_ptr->nested_scopes += scope_delta; 1771 1772#ifdef ECOFF_DEBUG 1773 if (debug && type != st_File 1774 && (debug > 2 || type == st_Block || type == st_End 1775 || type == st_Proc || type == st_StaticProc)) 1776 { 1777 char *sc_str = sc_to_string (storage); 1778 char *st_str = st_to_string (type); 1779 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0); 1780 1781 fprintf (stderr, 1782 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s", 1783 value, depth, sc_str); 1784 1785 if (str_start && str_end_p1 - str_start > 0) 1786 fprintf (stderr, " st= %-11s name= %.*s\n", 1787 st_str, str_end_p1 - str_start, str_start); 1788 else 1789 { 1790 unsigned long len = strlen (st_str); 1791 fprintf (stderr, " st= %.*s\n", len - 1, st_str); 1792 } 1793 } 1794#endif 1795 1796 return psym; 1797} 1798 1799/* Add an auxiliary symbol (passing a symint). This is actually used 1800 for integral aux types, not just symints. */ 1801 1802static symint_t 1803add_aux_sym_symint (symint_t aux_word /* auxiliary information word */) 1804{ 1805 varray_t *vp; 1806 aux_t *aux_ptr; 1807 1808 if (cur_file_ptr == (efdr_t *) NULL) 1809 as_fatal (_("no current file pointer")); 1810 1811 vp = &cur_file_ptr->aux_syms; 1812 1813 if (vp->objects_last_page == vp->objects_per_page) 1814 add_varray_page (vp); 1815 1816 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1817 aux_ptr->type = aux_isym; 1818 aux_ptr->data.isym = aux_word; 1819 1820 return vp->num_allocated++; 1821} 1822 1823/* Add an auxiliary symbol (passing a file/symbol index combo). */ 1824 1825static symint_t 1826add_aux_sym_rndx (int file_index, symint_t sym_index) 1827{ 1828 varray_t *vp; 1829 aux_t *aux_ptr; 1830 1831 if (cur_file_ptr == (efdr_t *) NULL) 1832 as_fatal (_("no current file pointer")); 1833 1834 vp = &cur_file_ptr->aux_syms; 1835 1836 if (vp->objects_last_page == vp->objects_per_page) 1837 add_varray_page (vp); 1838 1839 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1840 aux_ptr->type = aux_rndx; 1841 aux_ptr->data.rndx.rfd = file_index; 1842 aux_ptr->data.rndx.index = sym_index; 1843 1844 return vp->num_allocated++; 1845} 1846 1847/* Add an auxiliary symbol (passing the basic type and possibly 1848 type qualifiers). */ 1849 1850static symint_t 1851add_aux_sym_tir (type_info_t *t, /* current type information */ 1852 hash_state_t state, /* whether to hash type or not */ 1853 thash_t **hash_tbl /* pointer to hash table to use */) 1854{ 1855 varray_t *vp; 1856 aux_t *aux_ptr; 1857 static AUXU init_aux; 1858 symint_t ret; 1859 int i; 1860 AUXU aux; 1861 1862 if (cur_file_ptr == (efdr_t *) NULL) 1863 as_fatal (_("no current file pointer")); 1864 1865 vp = &cur_file_ptr->aux_syms; 1866 1867 aux = init_aux; 1868 aux.ti.bt = (int) t->basic_type; 1869 aux.ti.continued = 0; 1870 aux.ti.fBitfield = t->bitfield; 1871 1872 aux.ti.tq0 = (int) t->type_qualifiers[0]; 1873 aux.ti.tq1 = (int) t->type_qualifiers[1]; 1874 aux.ti.tq2 = (int) t->type_qualifiers[2]; 1875 aux.ti.tq3 = (int) t->type_qualifiers[3]; 1876 aux.ti.tq4 = (int) t->type_qualifiers[4]; 1877 aux.ti.tq5 = (int) t->type_qualifiers[5]; 1878 1879 /* For anything that adds additional information, we must not hash, 1880 so check here, and reset our state. */ 1881 1882 if (state != hash_no 1883 && (t->type_qualifiers[0] == tq_Array 1884 || t->type_qualifiers[1] == tq_Array 1885 || t->type_qualifiers[2] == tq_Array 1886 || t->type_qualifiers[3] == tq_Array 1887 || t->type_qualifiers[4] == tq_Array 1888 || t->type_qualifiers[5] == tq_Array 1889 || t->basic_type == bt_Struct 1890 || t->basic_type == bt_Union 1891 || t->basic_type == bt_Enum 1892 || t->bitfield 1893 || t->num_dims > 0)) 1894 state = hash_no; 1895 1896 /* See if we can hash this type, and save some space, but some types 1897 can't be hashed (because they contain arrays or continuations), 1898 and others can be put into the hash list, but cannot use existing 1899 types because other aux entries precede this one. */ 1900 1901 if (state != hash_no) 1902 { 1903 thash_t *hash_ptr; 1904 symint_t hi; 1905 1906 hi = aux.isym & ((1 << HASHBITS) - 1); 1907 hi %= THASH_SIZE; 1908 1909 for (hash_ptr = hash_tbl[hi]; 1910 hash_ptr != (thash_t *)0; 1911 hash_ptr = hash_ptr->next) 1912 { 1913 if (aux.isym == hash_ptr->type.isym) 1914 break; 1915 } 1916 1917 if (hash_ptr != (thash_t *) NULL && state == hash_yes) 1918 return hash_ptr->indx; 1919 1920 if (hash_ptr == (thash_t *) NULL) 1921 { 1922 hash_ptr = allocate_thash (); 1923 hash_ptr->next = hash_tbl[hi]; 1924 hash_ptr->type = aux; 1925 hash_ptr->indx = vp->num_allocated; 1926 hash_tbl[hi] = hash_ptr; 1927 } 1928 } 1929 1930 /* Everything is set up, add the aux symbol. */ 1931 if (vp->objects_last_page == vp->objects_per_page) 1932 add_varray_page (vp); 1933 1934 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++]; 1935 aux_ptr->type = aux_tir; 1936 aux_ptr->data = aux; 1937 1938 ret = vp->num_allocated++; 1939 1940 /* Add bitfield length if it exists. 1941 1942 NOTE: Mips documentation claims bitfield goes at the end of the 1943 AUX record, but the DECstation compiler emits it here. 1944 (This would only make a difference for enum bitfields.) 1945 1946 Also note: We use the last size given since gcc may emit 2 1947 for an enum bitfield. */ 1948 1949 if (t->bitfield) 1950 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]); 1951 1952 /* Add tag information if needed. Structure, union, and enum 1953 references add 2 aux symbols: a [file index, symbol index] 1954 pointer to the structure type, and the current file index. */ 1955 1956 if (t->basic_type == bt_Struct 1957 || t->basic_type == bt_Union 1958 || t->basic_type == bt_Enum) 1959 { 1960 symint_t file_index = t->tag_ptr->ifd; 1961 localsym_t *sym = t->tag_ptr->sym; 1962 forward_t *forward_ref = allocate_forward (); 1963 1964 if (sym != (localsym_t *) NULL) 1965 { 1966 forward_ref->next = sym->forward_ref; 1967 sym->forward_ref = forward_ref; 1968 } 1969 else 1970 { 1971 forward_ref->next = t->tag_ptr->forward_ref; 1972 t->tag_ptr->forward_ref = forward_ref; 1973 } 1974 1975 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil); 1976 forward_ref->index_ptr 1977 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1978 1979 (void) add_aux_sym_symint (file_index); 1980 forward_ref->ifd_ptr 1981 = &vp->last->datum->aux[vp->objects_last_page - 1]; 1982 } 1983 1984 /* Add information about array bounds if they exist. */ 1985 for (i = 0; i < t->num_dims; i++) 1986 { 1987 (void) add_aux_sym_rndx (ST_RFDESCAPE, 1988 cur_file_ptr->int_type); 1989 1990 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/ 1991 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */ 1992 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/ 1993 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */ 1994 ? 0 1995 : (t->sizes[i] * 8) / t->dimensions[i]); 1996 }; 1997 1998 /* NOTE: Mips documentation claims that the bitfield width goes here. 1999 But it needs to be emitted earlier. */ 2000 2001 return ret; 2002} 2003 2004/* Add a tag to the tag table (unless it already exists). */ 2005 2006static tag_t * 2007get_tag (const char *tag, /* tag name */ 2008 localsym_t *sym, /* tag start block */ 2009 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */) 2010{ 2011 shash_t *hash_ptr; 2012 const char *err; 2013 tag_t *tag_ptr; 2014 2015 if (cur_file_ptr == (efdr_t *) NULL) 2016 as_fatal (_("no current file pointer")); 2017 2018 hash_ptr = (shash_t *) hash_find (tag_hash, tag); 2019 2020 if (hash_ptr != (shash_t *) NULL 2021 && hash_ptr->tag_ptr != (tag_t *) NULL) 2022 { 2023 tag_ptr = hash_ptr->tag_ptr; 2024 if (sym != (localsym_t *) NULL) 2025 { 2026 tag_ptr->basic_type = basic_type; 2027 tag_ptr->ifd = cur_file_ptr->file_index; 2028 tag_ptr->sym = sym; 2029 } 2030 return tag_ptr; 2031 } 2032 2033 if (hash_ptr == (shash_t *) NULL) 2034 { 2035 char *perm; 2036 2037 perm = xstrdup (tag); 2038 hash_ptr = allocate_shash (); 2039 err = hash_insert (tag_hash, perm, (char *) hash_ptr); 2040 if (err) 2041 as_fatal (_("inserting \"%s\" into tag hash table: %s"), 2042 tag, err); 2043 hash_ptr->string = perm; 2044 } 2045 2046 tag_ptr = allocate_tag (); 2047 tag_ptr->forward_ref = (forward_t *) NULL; 2048 tag_ptr->hash_ptr = hash_ptr; 2049 tag_ptr->same_name = hash_ptr->tag_ptr; 2050 tag_ptr->basic_type = basic_type; 2051 tag_ptr->sym = sym; 2052 tag_ptr->ifd = ((sym == (localsym_t *) NULL) 2053 ? (symint_t) -1 2054 : cur_file_ptr->file_index); 2055 tag_ptr->same_block = cur_tag_head->first_tag; 2056 2057 cur_tag_head->first_tag = tag_ptr; 2058 hash_ptr->tag_ptr = tag_ptr; 2059 2060 return tag_ptr; 2061} 2062 2063/* Add an unknown {struct, union, enum} tag. */ 2064 2065static void 2066add_unknown_tag (tag_t *ptag /* pointer to tag information */) 2067{ 2068 shash_t *hash_ptr = ptag->hash_ptr; 2069 char *name = hash_ptr->string; 2070 localsym_t *sym; 2071 forward_t **pf; 2072 2073#ifdef ECOFF_DEBUG 2074 if (debug > 1) 2075 { 2076 char *agg_type = "{unknown aggregate type}"; 2077 switch (ptag->basic_type) 2078 { 2079 case bt_Struct: agg_type = "struct"; break; 2080 case bt_Union: agg_type = "union"; break; 2081 case bt_Enum: agg_type = "enum"; break; 2082 default: break; 2083 } 2084 2085 fprintf (stderr, "unknown %s %.*s found\n", agg_type, 2086 hash_ptr->len, name_start); 2087 } 2088#endif 2089 2090 sym = add_ecoff_symbol (name, 2091 st_Block, 2092 sc_Info, 2093 (symbolS *) NULL, 2094 (bfd_vma) 0, 2095 (symint_t) 0, 2096 (symint_t) 0); 2097 2098 (void) add_ecoff_symbol (name, 2099 st_End, 2100 sc_Info, 2101 (symbolS *) NULL, 2102 (bfd_vma) 0, 2103 (symint_t) 0, 2104 (symint_t) 0); 2105 2106 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next) 2107 ; 2108 *pf = ptag->forward_ref; 2109} 2110 2111/* Add a procedure to the current file's list of procedures, and record 2112 this is the current procedure. If AENT, then only set the requested 2113 symbol's function type. */ 2114 2115static void 2116add_procedure (char *func /* func name */, int aent) 2117{ 2118 varray_t *vp; 2119 proc_t *new_proc_ptr; 2120 symbolS *sym; 2121 2122#ifdef ECOFF_DEBUG 2123 if (debug) 2124 fputc ('\n', stderr); 2125#endif 2126 2127 /* Set the BSF_FUNCTION flag for the symbol. */ 2128 sym = symbol_find_or_make (func); 2129 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; 2130 2131 if (aent) 2132 return; 2133 2134 if (cur_file_ptr == (efdr_t *) NULL) 2135 as_fatal (_("no current file pointer")); 2136 2137 vp = &cur_file_ptr->procs; 2138 2139 if (vp->objects_last_page == vp->objects_per_page) 2140 add_varray_page (vp); 2141 2142 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++]; 2143 2144 if (first_proc_ptr == (proc_t *) NULL) 2145 first_proc_ptr = new_proc_ptr; 2146 2147 vp->num_allocated++; 2148 2149 new_proc_ptr->pdr.isym = -1; 2150 new_proc_ptr->pdr.iline = -1; 2151 new_proc_ptr->pdr.lnLow = -1; 2152 new_proc_ptr->pdr.lnHigh = -1; 2153 2154 /* Push the start of the function. */ 2155 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text, 2156 sym, (bfd_vma) 0, (symint_t) 0, 2157 (symint_t) 0); 2158 2159 ++proc_cnt; 2160 2161 /* Fill in the linenos preceding the .ent, if any. */ 2162 if (noproc_lineno != (lineno_list_t *) NULL) 2163 { 2164 lineno_list_t *l; 2165 2166 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next) 2167 l->proc = new_proc_ptr; 2168 *last_lineno_ptr = noproc_lineno; 2169 while (*last_lineno_ptr != NULL) 2170 { 2171 last_lineno = *last_lineno_ptr; 2172 last_lineno_ptr = &last_lineno->next; 2173 } 2174 noproc_lineno = (lineno_list_t *) NULL; 2175 } 2176} 2177 2178symbolS * 2179ecoff_get_cur_proc_sym (void) 2180{ 2181 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL); 2182} 2183 2184/* Add a new filename, and set up all of the file relative 2185 virtual arrays (strings, symbols, aux syms, etc.). Record 2186 where the current file structure lives. */ 2187 2188static void 2189add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake) 2190{ 2191 int first_ch; 2192 efdr_t *fil_ptr; 2193 2194#ifdef ECOFF_DEBUG 2195 if (debug) 2196 fprintf (stderr, "\tfile\t%.*s\n", len, file_start); 2197#endif 2198 2199 /* If the file name is NULL, then no .file symbol appeared, and we 2200 want to use the actual file name. */ 2201 if (file_name == (const char *) NULL) 2202 { 2203 if (first_file != (efdr_t *) NULL) 2204 as_fatal (_("fake .file after real one")); 2205 file_name = as_where ((unsigned int *) NULL); 2206 2207 /* Automatically generate ECOFF debugging information, since I 2208 think that's what other ECOFF assemblers do. We don't do 2209 this if we see a .file directive with a string, since that 2210 implies that some sort of debugging information is being 2211 provided. */ 2212 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED) 2213 debug_type = DEBUG_ECOFF; 2214 } 2215 else if (debug_type == DEBUG_UNSPECIFIED) 2216 debug_type = DEBUG_NONE; 2217 2218#ifndef NO_LISTING 2219 if (listing) 2220 listing_source_file (file_name); 2221#endif 2222 2223 current_stabs_filename = file_name; 2224 2225 /* If we're creating stabs, then we don't actually make a new FDR. 2226 Instead, we just create a stabs symbol. */ 2227 if (stabs_seen) 2228 { 2229 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil, 2230 symbol_new (FAKE_LABEL_NAME, now_seg, 2231 (valueT) frag_now_fix (), 2232 frag_now), 2233 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL)); 2234 return; 2235 } 2236 2237 first_ch = *file_name; 2238 2239 /* FIXME: We can't safely merge files which have line number 2240 information (fMerge will be zero in this case). Otherwise, we 2241 get incorrect line number debugging info. See for instance 2242 ecoff_build_lineno, which will end up setting all file->fdr.* 2243 fields multiple times, resulting in incorrect debug info. In 2244 order to make this work right, all line number and symbol info 2245 for the same source file has to be adjacent in the object file, 2246 so that a single file descriptor can be used to point to them. 2247 This would require maintaining file specific lists of line 2248 numbers and symbols for each file, so that they can be merged 2249 together (or output together) when two .file pseudo-ops are 2250 merged into one file descriptor. */ 2251 2252 /* See if the file has already been created. */ 2253 for (fil_ptr = first_file; 2254 fil_ptr != (efdr_t *) NULL; 2255 fil_ptr = fil_ptr->next_file) 2256 { 2257 if (first_ch == fil_ptr->name[0] 2258 && filename_cmp (file_name, fil_ptr->name) == 0 2259 && fil_ptr->fdr.fMerge) 2260 { 2261 cur_file_ptr = fil_ptr; 2262 if (! fake) 2263 cur_file_ptr->fake = 0; 2264 break; 2265 } 2266 } 2267 2268 /* If this is a new file, create it. */ 2269 if (fil_ptr == (efdr_t *) NULL) 2270 { 2271 if (file_desc.objects_last_page == file_desc.objects_per_page) 2272 add_varray_page (&file_desc); 2273 2274 fil_ptr = cur_file_ptr = 2275 &file_desc.last->datum->file[file_desc.objects_last_page++]; 2276 *fil_ptr = init_file; 2277 2278 fil_ptr->file_index = current_file_idx++; 2279 ++file_desc.num_allocated; 2280 2281 fil_ptr->fake = fake; 2282 2283 /* Allocate the string hash table. */ 2284 fil_ptr->str_hash = hash_new (); 2285 2286 /* Make sure 0 byte in string table is null */ 2287 add_string (&fil_ptr->strings, 2288 fil_ptr->str_hash, 2289 "", 2290 (shash_t **)0); 2291 2292 if (strlen (file_name) > PAGE_USIZE - 2) 2293 as_fatal (_("filename goes over one page boundary")); 2294 2295 /* Push the start of the filename. We assume that the filename 2296 will be stored at string offset 1. */ 2297 (void) add_ecoff_symbol (file_name, st_File, sc_Text, 2298 (symbolS *) NULL, (bfd_vma) 0, 2299 (symint_t) 0, (symint_t) 0); 2300 fil_ptr->fdr.rss = 1; 2301 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1]; 2302 2303 /* Update the linked list of file descriptors. */ 2304 *last_file_ptr = fil_ptr; 2305 last_file_ptr = &fil_ptr->next_file; 2306 2307 /* Add void & int types to the file (void should be first to catch 2308 errant 0's within the index fields). */ 2309 fil_ptr->void_type = add_aux_sym_tir (&void_type_info, 2310 hash_yes, 2311 &cur_file_ptr->thash_head[0]); 2312 2313 fil_ptr->int_type = add_aux_sym_tir (&int_type_info, 2314 hash_yes, 2315 &cur_file_ptr->thash_head[0]); 2316 } 2317} 2318 2319/* This function is called when the assembler notices a preprocessor 2320 directive switching to a new file. This will not happen in 2321 compiler output, only in hand coded assembler. */ 2322 2323void 2324ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED) 2325{ 2326 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0) 2327 return; 2328 add_file (name, 0, 0); 2329 2330 /* This is a hand coded assembler file, so automatically turn on 2331 debugging information. */ 2332 if (debug_type == DEBUG_UNSPECIFIED) 2333 debug_type = DEBUG_ECOFF; 2334} 2335 2336#ifdef ECOFF_DEBUG 2337 2338/* Convert storage class to string. */ 2339 2340static char * 2341sc_to_string (storage_class) 2342 sc_t storage_class; 2343{ 2344 switch (storage_class) 2345 { 2346 case sc_Nil: return "Nil,"; 2347 case sc_Text: return "Text,"; 2348 case sc_Data: return "Data,"; 2349 case sc_Bss: return "Bss,"; 2350 case sc_Register: return "Register,"; 2351 case sc_Abs: return "Abs,"; 2352 case sc_Undefined: return "Undefined,"; 2353 case sc_CdbLocal: return "CdbLocal,"; 2354 case sc_Bits: return "Bits,"; 2355 case sc_CdbSystem: return "CdbSystem,"; 2356 case sc_RegImage: return "RegImage,"; 2357 case sc_Info: return "Info,"; 2358 case sc_UserStruct: return "UserStruct,"; 2359 case sc_SData: return "SData,"; 2360 case sc_SBss: return "SBss,"; 2361 case sc_RData: return "RData,"; 2362 case sc_Var: return "Var,"; 2363 case sc_Common: return "Common,"; 2364 case sc_SCommon: return "SCommon,"; 2365 case sc_VarRegister: return "VarRegister,"; 2366 case sc_Variant: return "Variant,"; 2367 case sc_SUndefined: return "SUndefined,"; 2368 case sc_Init: return "Init,"; 2369 case sc_Max: return "Max,"; 2370 } 2371 2372 return "???,"; 2373} 2374 2375#endif /* DEBUG */ 2376 2377#ifdef ECOFF_DEBUG 2378 2379/* Convert symbol type to string. */ 2380 2381static char * 2382st_to_string (symbol_type) 2383 st_t symbol_type; 2384{ 2385 switch (symbol_type) 2386 { 2387 case st_Nil: return "Nil,"; 2388 case st_Global: return "Global,"; 2389 case st_Static: return "Static,"; 2390 case st_Param: return "Param,"; 2391 case st_Local: return "Local,"; 2392 case st_Label: return "Label,"; 2393 case st_Proc: return "Proc,"; 2394 case st_Block: return "Block,"; 2395 case st_End: return "End,"; 2396 case st_Member: return "Member,"; 2397 case st_Typedef: return "Typedef,"; 2398 case st_File: return "File,"; 2399 case st_RegReloc: return "RegReloc,"; 2400 case st_Forward: return "Forward,"; 2401 case st_StaticProc: return "StaticProc,"; 2402 case st_Constant: return "Constant,"; 2403 case st_Str: return "String,"; 2404 case st_Number: return "Number,"; 2405 case st_Expr: return "Expr,"; 2406 case st_Type: return "Type,"; 2407 case st_Max: return "Max,"; 2408 } 2409 2410 return "???,"; 2411} 2412 2413#endif /* DEBUG */ 2414 2415/* Parse .begin directives which have a label as the first argument 2416 which gives the location of the start of the block. */ 2417 2418void 2419ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED) 2420{ 2421 char *name; 2422 char name_end; 2423 2424 if (cur_file_ptr == (efdr_t *) NULL) 2425 { 2426 as_warn (_(".begin directive without a preceding .file directive")); 2427 demand_empty_rest_of_line (); 2428 return; 2429 } 2430 2431 if (cur_proc_ptr == (proc_t *) NULL) 2432 { 2433 as_warn (_(".begin directive without a preceding .ent directive")); 2434 demand_empty_rest_of_line (); 2435 return; 2436 } 2437 2438 name_end = get_symbol_name (&name); 2439 2440 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text, 2441 symbol_find_or_make (name), 2442 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2443 2444 (void) restore_line_pointer (name_end); 2445 2446 /* The line number follows, but we don't use it. */ 2447 (void) get_absolute_expression (); 2448 demand_empty_rest_of_line (); 2449} 2450 2451/* Parse .bend directives which have a label as the first argument 2452 which gives the location of the end of the block. */ 2453 2454void 2455ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED) 2456{ 2457 char *name; 2458 char name_end; 2459 symbolS *endsym; 2460 2461 if (cur_file_ptr == (efdr_t *) NULL) 2462 { 2463 as_warn (_(".bend directive without a preceding .file directive")); 2464 demand_empty_rest_of_line (); 2465 return; 2466 } 2467 2468 if (cur_proc_ptr == (proc_t *) NULL) 2469 { 2470 as_warn (_(".bend directive without a preceding .ent directive")); 2471 demand_empty_rest_of_line (); 2472 return; 2473 } 2474 2475 name_end = get_symbol_name (&name); 2476 2477 /* The value is the distance between the .bend directive and the 2478 corresponding symbol. We fill in the offset when we write out 2479 the symbol. */ 2480 endsym = symbol_find (name); 2481 if (endsym == (symbolS *) NULL) 2482 as_warn (_(".bend directive names unknown symbol")); 2483 else 2484 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym, 2485 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 2486 2487 restore_line_pointer (name_end); 2488 2489 /* The line number follows, but we don't use it. */ 2490 (void) get_absolute_expression (); 2491 demand_empty_rest_of_line (); 2492} 2493 2494/* COFF debugging information is provided as a series of directives 2495 (.def, .scl, etc.). We build up information as we read the 2496 directives in the following static variables, and file it away when 2497 we reach the .endef directive. */ 2498static char *coff_sym_name; 2499static type_info_t coff_type; 2500static sc_t coff_storage_class; 2501static st_t coff_symbol_typ; 2502static int coff_is_function; 2503static char *coff_tag; 2504static valueT coff_value; 2505static symbolS *coff_sym_value; 2506static bfd_vma coff_sym_addend; 2507static int coff_inside_enumeration; 2508 2509/* Handle a .def directive: start defining a symbol. */ 2510 2511void 2512ecoff_directive_def (int ignore ATTRIBUTE_UNUSED) 2513{ 2514 char *name; 2515 char name_end; 2516 2517 ecoff_debugging_seen = 1; 2518 2519 SKIP_WHITESPACE (); 2520 2521 name_end = get_symbol_name (&name); 2522 2523 if (coff_sym_name != (char *) NULL) 2524 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored")); 2525 else if (*name == '\0') 2526 as_warn (_("empty symbol name in .def; ignored")); 2527 else 2528 { 2529 if (coff_sym_name != (char *) NULL) 2530 free (coff_sym_name); 2531 if (coff_tag != (char *) NULL) 2532 free (coff_tag); 2533 2534 coff_sym_name = xstrdup (name); 2535 coff_type = type_info_init; 2536 coff_storage_class = sc_Nil; 2537 coff_symbol_typ = st_Nil; 2538 coff_is_function = 0; 2539 coff_tag = (char *) NULL; 2540 coff_value = 0; 2541 coff_sym_value = (symbolS *) NULL; 2542 coff_sym_addend = 0; 2543 } 2544 2545 restore_line_pointer (name_end); 2546 2547 demand_empty_rest_of_line (); 2548} 2549 2550/* Handle a .dim directive, used to give dimensions for an array. The 2551 arguments are comma separated numbers. mips-tfile assumes that 2552 there will not be more than 6 dimensions, and gdb won't read any 2553 more than that anyhow, so I will also make that assumption. */ 2554 2555void 2556ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED) 2557{ 2558 int dimens[N_TQ]; 2559 int i; 2560 2561 if (coff_sym_name == (char *) NULL) 2562 { 2563 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored")); 2564 demand_empty_rest_of_line (); 2565 return; 2566 } 2567 2568 for (i = 0; i < N_TQ; i++) 2569 { 2570 SKIP_WHITESPACE (); 2571 dimens[i] = get_absolute_expression (); 2572 if (*input_line_pointer == ',') 2573 ++input_line_pointer; 2574 else 2575 { 2576 if (*input_line_pointer != '\n' 2577 && *input_line_pointer != ';') 2578 as_warn (_("badly formed .dim directive")); 2579 break; 2580 } 2581 } 2582 2583 if (i == N_TQ) 2584 --i; 2585 2586 /* The dimensions are stored away in reverse order. */ 2587 for (; i >= 0; i--) 2588 { 2589 if (coff_type.num_dims >= N_TQ) 2590 { 2591 as_warn (_("too many .dim entries")); 2592 break; 2593 } 2594 coff_type.dimensions[coff_type.num_dims] = dimens[i]; 2595 ++coff_type.num_dims; 2596 } 2597 2598 demand_empty_rest_of_line (); 2599} 2600 2601/* Handle a .scl directive, which sets the COFF storage class of the 2602 symbol. */ 2603 2604void 2605ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED) 2606{ 2607 long val; 2608 2609 if (coff_sym_name == (char *) NULL) 2610 { 2611 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored")); 2612 demand_empty_rest_of_line (); 2613 return; 2614 } 2615 2616 val = get_absolute_expression (); 2617 2618 coff_symbol_typ = map_coff_sym_type[val]; 2619 coff_storage_class = map_coff_storage[val]; 2620 2621 demand_empty_rest_of_line (); 2622} 2623 2624/* Handle a .size directive. For some reason mips-tfile.c thinks that 2625 .size can have multiple arguments. We humor it, although gcc will 2626 never generate more than one argument. */ 2627 2628void 2629ecoff_directive_size (int ignore ATTRIBUTE_UNUSED) 2630{ 2631 int sizes[N_TQ]; 2632 int i; 2633 2634 if (coff_sym_name == (char *) NULL) 2635 { 2636 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored")); 2637 demand_empty_rest_of_line (); 2638 return; 2639 } 2640 2641 for (i = 0; i < N_TQ; i++) 2642 { 2643 SKIP_WHITESPACE (); 2644 sizes[i] = get_absolute_expression (); 2645 if (*input_line_pointer == ',') 2646 ++input_line_pointer; 2647 else 2648 { 2649 if (*input_line_pointer != '\n' 2650 && *input_line_pointer != ';') 2651 as_warn (_("badly formed .size directive")); 2652 break; 2653 } 2654 } 2655 2656 if (i == N_TQ) 2657 --i; 2658 2659 /* The sizes are stored away in reverse order. */ 2660 for (; i >= 0; i--) 2661 { 2662 if (coff_type.num_sizes >= N_TQ) 2663 { 2664 as_warn (_("too many .size entries")); 2665 break; 2666 } 2667 coff_type.sizes[coff_type.num_sizes] = sizes[i]; 2668 ++coff_type.num_sizes; 2669 } 2670 2671 demand_empty_rest_of_line (); 2672} 2673 2674/* Handle the .type directive, which gives the COFF type of the 2675 symbol. */ 2676 2677void 2678ecoff_directive_type (int ignore ATTRIBUTE_UNUSED) 2679{ 2680 long val; 2681 tq_t *tq_ptr; 2682 tq_t *tq_shft; 2683 2684 if (coff_sym_name == (char *) NULL) 2685 { 2686 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored")); 2687 demand_empty_rest_of_line (); 2688 return; 2689 } 2690 2691 val = get_absolute_expression (); 2692 2693 coff_type.orig_type = BTYPE (val); 2694 coff_type.basic_type = map_coff_types[coff_type.orig_type]; 2695 2696 tq_ptr = &coff_type.type_qualifiers[N_TQ]; 2697 while (val & ~N_BTMASK) 2698 { 2699 if (tq_ptr == &coff_type.type_qualifiers[0]) 2700 { 2701 /* FIXME: We could handle this by setting the continued bit. 2702 There would still be a limit: the .type argument can not 2703 be infinite. */ 2704 as_warn (_("the type of %s is too complex; it will be simplified"), 2705 coff_sym_name); 2706 break; 2707 } 2708 if (ISPTR (val)) 2709 *--tq_ptr = tq_Ptr; 2710 else if (ISFCN (val)) 2711 *--tq_ptr = tq_Proc; 2712 else if (ISARY (val)) 2713 *--tq_ptr = tq_Array; 2714 else 2715 as_fatal (_("Unrecognized .type argument")); 2716 2717 val = DECREF (val); 2718 } 2719 2720 tq_shft = &coff_type.type_qualifiers[0]; 2721 while (tq_ptr != &coff_type.type_qualifiers[N_TQ]) 2722 *tq_shft++ = *tq_ptr++; 2723 2724 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc) 2725 { 2726 /* If this is a function, ignore it, so that we don't get two 2727 entries (one from the .ent, and one for the .def that 2728 precedes it). Save the type information so that the end 2729 block can properly add it after the begin block index. For 2730 MIPS knows what reason, we must strip off the function type 2731 at this point. */ 2732 coff_is_function = 1; 2733 tq_shft[-1] = tq_Nil; 2734 } 2735 2736 while (tq_shft != &coff_type.type_qualifiers[N_TQ]) 2737 *tq_shft++ = tq_Nil; 2738 2739 demand_empty_rest_of_line (); 2740} 2741 2742/* Handle the .tag directive, which gives the name of a structure, 2743 union or enum. */ 2744 2745void 2746ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED) 2747{ 2748 char *name; 2749 char name_end; 2750 2751 if (coff_sym_name == (char *) NULL) 2752 { 2753 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored")); 2754 demand_empty_rest_of_line (); 2755 return; 2756 } 2757 2758 name_end = get_symbol_name (&name); 2759 2760 coff_tag = xstrdup (name); 2761 2762 (void) restore_line_pointer (name_end); 2763 2764 demand_empty_rest_of_line (); 2765} 2766 2767/* Handle the .val directive, which gives the value of the symbol. It 2768 may be the name of a static or global symbol. */ 2769 2770void 2771ecoff_directive_val (int ignore ATTRIBUTE_UNUSED) 2772{ 2773 expressionS exp; 2774 2775 if (coff_sym_name == (char *) NULL) 2776 { 2777 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored")); 2778 demand_empty_rest_of_line (); 2779 return; 2780 } 2781 2782 expression (&exp); 2783 if (exp.X_op != O_constant && exp.X_op != O_symbol) 2784 { 2785 as_bad (_(".val expression is too complex")); 2786 demand_empty_rest_of_line (); 2787 return; 2788 } 2789 2790 if (exp.X_op == O_constant) 2791 coff_value = exp.X_add_number; 2792 else 2793 { 2794 coff_sym_value = exp.X_add_symbol; 2795 coff_sym_addend = exp.X_add_number; 2796 } 2797 2798 demand_empty_rest_of_line (); 2799} 2800 2801/* Handle the .endef directive, which terminates processing of COFF 2802 debugging information for a symbol. */ 2803 2804void 2805ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED) 2806{ 2807 char *name; 2808 symint_t indx; 2809 localsym_t *sym; 2810 2811 demand_empty_rest_of_line (); 2812 2813 if (coff_sym_name == (char *) NULL) 2814 { 2815 as_warn (_(".endef pseudo-op used before .def; ignored")); 2816 return; 2817 } 2818 2819 name = coff_sym_name; 2820 coff_sym_name = (char *) NULL; 2821 2822 /* If the symbol is a static or external, we have already gotten the 2823 appropriate type and class, so make sure we don't override those 2824 values. This is needed because there are some type and classes 2825 that are not in COFF, such as short data, etc. */ 2826 if (coff_sym_value != (symbolS *) NULL) 2827 { 2828 coff_symbol_typ = st_Nil; 2829 coff_storage_class = sc_Nil; 2830 } 2831 2832 coff_type.extra_sizes = coff_tag != (char *) NULL; 2833 if (coff_type.num_dims > 0) 2834 { 2835 int diff = coff_type.num_dims - coff_type.num_sizes; 2836 int i = coff_type.num_dims - 1; 2837 int j; 2838 2839 if (coff_type.num_sizes != 1 || diff < 0) 2840 { 2841 as_warn (_("bad COFF debugging information")); 2842 return; 2843 } 2844 2845 /* If this is an array, make sure the same number of dimensions 2846 and sizes were passed, creating extra sizes for multiply 2847 dimensioned arrays if not passed. */ 2848 coff_type.extra_sizes = 0; 2849 if (diff) 2850 { 2851 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1; 2852 while (j >= 0) 2853 { 2854 coff_type.sizes[j] = (((j - diff) >= 0) 2855 ? coff_type.sizes[j - diff] 2856 : 0); 2857 j--; 2858 } 2859 2860 coff_type.num_sizes = i + 1; 2861 for (i--; i >= 0; i--) 2862 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0 2863 ? 0 2864 : (coff_type.sizes[i + 1] 2865 / coff_type.dimensions[i + 1])); 2866 } 2867 } 2868 else if (coff_symbol_typ == st_Member 2869 && coff_type.num_sizes - coff_type.extra_sizes == 1) 2870 { 2871 /* Is this a bitfield? This is indicated by a structure member 2872 having a size field that isn't an array. */ 2873 coff_type.bitfield = 1; 2874 } 2875 2876 /* Except for enumeration members & begin/ending of scopes, put the 2877 type word in the aux. symbol table. */ 2878 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End) 2879 indx = 0; 2880 else if (coff_inside_enumeration) 2881 indx = cur_file_ptr->void_type; 2882 else 2883 { 2884 if (coff_type.basic_type == bt_Struct 2885 || coff_type.basic_type == bt_Union 2886 || coff_type.basic_type == bt_Enum) 2887 { 2888 if (coff_tag == (char *) NULL) 2889 { 2890 as_warn (_("no tag specified for %s"), name); 2891 return; 2892 } 2893 2894 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL, 2895 coff_type.basic_type); 2896 } 2897 2898 if (coff_is_function) 2899 { 2900 last_func_type_info = coff_type; 2901 last_func_sym_value = coff_sym_value; 2902 return; 2903 } 2904 2905 indx = add_aux_sym_tir (&coff_type, 2906 hash_yes, 2907 &cur_file_ptr->thash_head[0]); 2908 } 2909 2910 /* Do any last minute adjustments that are necessary. */ 2911 switch (coff_symbol_typ) 2912 { 2913 default: 2914 break; 2915 2916 /* For the beginning of structs, unions, and enumerations, the 2917 size info needs to be passed in the value field. */ 2918 case st_Block: 2919 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes 2920 != 1) 2921 { 2922 as_warn (_("bad COFF debugging information")); 2923 return; 2924 } 2925 else 2926 coff_value = coff_type.sizes[0]; 2927 2928 coff_inside_enumeration = (coff_type.orig_type == T_ENUM); 2929 break; 2930 2931 /* For the end of structs, unions, and enumerations, omit the 2932 name which is always ".eos". This needs to be done last, so 2933 that any error reporting above gives the correct name. */ 2934 case st_End: 2935 free (name); 2936 name = (char *) NULL; 2937 coff_value = 0; 2938 coff_inside_enumeration = 0; 2939 break; 2940 2941 /* Members of structures and unions that aren't bitfields, need 2942 to adjust the value from a byte offset to a bit offset. 2943 Members of enumerations do not have the value adjusted, and 2944 can be distinguished by indx == indexNil. For enumerations, 2945 update the maximum enumeration value. */ 2946 case st_Member: 2947 if (! coff_type.bitfield && ! coff_inside_enumeration) 2948 coff_value *= 8; 2949 2950 break; 2951 } 2952 2953 /* Add the symbol. */ 2954 sym = add_ecoff_symbol (name, 2955 coff_symbol_typ, 2956 coff_storage_class, 2957 coff_sym_value, 2958 coff_sym_addend, 2959 (symint_t) coff_value, 2960 indx); 2961 2962 /* deal with struct, union, and enum tags. */ 2963 if (coff_symbol_typ == st_Block) 2964 { 2965 /* Create or update the tag information. */ 2966 tag_t *tag_ptr = get_tag (name, 2967 sym, 2968 coff_type.basic_type); 2969 forward_t **pf; 2970 2971 /* Remember any forward references. */ 2972 for (pf = &sym->forward_ref; 2973 *pf != (forward_t *) NULL; 2974 pf = &(*pf)->next) 2975 ; 2976 *pf = tag_ptr->forward_ref; 2977 tag_ptr->forward_ref = (forward_t *) NULL; 2978 } 2979} 2980 2981/* Parse .end directives. */ 2982 2983void 2984ecoff_directive_end (int ignore ATTRIBUTE_UNUSED) 2985{ 2986 char *name; 2987 char name_end; 2988 symbolS *ent; 2989 2990 if (cur_file_ptr == (efdr_t *) NULL) 2991 { 2992 as_warn (_(".end directive without a preceding .file directive")); 2993 demand_empty_rest_of_line (); 2994 return; 2995 } 2996 2997 if (cur_proc_ptr == (proc_t *) NULL) 2998 { 2999 as_warn (_(".end directive without a preceding .ent directive")); 3000 demand_empty_rest_of_line (); 3001 return; 3002 } 3003 3004 name_end = get_symbol_name (&name); 3005 3006 if (name == input_line_pointer) 3007 { 3008 as_warn (_(".end directive has no name")); 3009 (void) restore_line_pointer (name_end); 3010 demand_empty_rest_of_line (); 3011 return; 3012 } 3013 3014 /* The value is the distance between the .end directive and the 3015 corresponding symbol. We create a fake symbol to hold the 3016 current location, and put in the offset when we write out the 3017 symbol. */ 3018 ent = symbol_find (name); 3019 if (ent == (symbolS *) NULL) 3020 as_warn (_(".end directive names unknown symbol")); 3021 else 3022 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, 3023 symbol_new (FAKE_LABEL_NAME, now_seg, 3024 (valueT) frag_now_fix (), 3025 frag_now), 3026 (bfd_vma) 0, (symint_t) 0, (symint_t) 0); 3027 3028#ifdef md_flush_pending_output 3029 md_flush_pending_output (); 3030#endif 3031 3032 cur_proc_ptr = (proc_t *) NULL; 3033 3034 (void) restore_line_pointer (name_end); 3035 demand_empty_rest_of_line (); 3036} 3037 3038/* Parse .ent directives. */ 3039 3040void 3041ecoff_directive_ent (int aent) 3042{ 3043 char *name; 3044 char name_end; 3045 3046 if (cur_file_ptr == (efdr_t *) NULL) 3047 add_file ((const char *) NULL, 0, 1); 3048 3049 if (!aent && cur_proc_ptr != (proc_t *) NULL) 3050 { 3051 as_warn (_("second .ent directive found before .end directive")); 3052 demand_empty_rest_of_line (); 3053 return; 3054 } 3055 3056 name_end = get_symbol_name (&name); 3057 3058 if (name == input_line_pointer) 3059 { 3060 as_warn (_("%s directive has no name"), aent ? ".aent" : ".ent"); 3061 (void) restore_line_pointer (name_end); 3062 demand_empty_rest_of_line (); 3063 return; 3064 } 3065 3066 add_procedure (name, aent); 3067 3068 (void) restore_line_pointer (name_end); 3069 3070 /* The .ent directive is sometimes followed by a number. I'm not 3071 really sure what the number means. I don't see any way to store 3072 the information in the PDR. The Irix 4 assembler seems to ignore 3073 the information. */ 3074 SKIP_WHITESPACE (); 3075 if (*input_line_pointer == ',') 3076 { 3077 ++input_line_pointer; 3078 SKIP_WHITESPACE (); 3079 } 3080 if (ISDIGIT (*input_line_pointer) 3081 || *input_line_pointer == '-') 3082 (void) get_absolute_expression (); 3083 3084 demand_empty_rest_of_line (); 3085} 3086 3087/* Parse .extern directives. */ 3088 3089void 3090ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED) 3091{ 3092 char *name; 3093 int c; 3094 symbolS *symbolp; 3095 valueT size; 3096 3097 c = get_symbol_name (&name); 3098 symbolp = symbol_find_or_make (name); 3099 (void) restore_line_pointer (c); 3100 3101 S_SET_EXTERNAL (symbolp); 3102 3103 if (*input_line_pointer == ',') 3104 ++input_line_pointer; 3105 size = get_absolute_expression (); 3106 3107 symbol_get_obj (symbolp)->ecoff_extern_size = size; 3108} 3109 3110/* Parse .file directives. */ 3111 3112void 3113ecoff_directive_file (int ignore ATTRIBUTE_UNUSED) 3114{ 3115 int indx; 3116 char *name; 3117 int len; 3118 3119 if (cur_proc_ptr != (proc_t *) NULL) 3120 { 3121 as_warn (_("no way to handle .file within .ent/.end section")); 3122 demand_empty_rest_of_line (); 3123 return; 3124 } 3125 3126 indx = (int) get_absolute_expression (); 3127 3128 /* FIXME: we don't have to save the name here. */ 3129 name = demand_copy_C_string (&len); 3130 3131 add_file (name, indx - 1, 0); 3132 3133 demand_empty_rest_of_line (); 3134} 3135 3136/* Parse .fmask directives. */ 3137 3138void 3139ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED) 3140{ 3141 long val; 3142 3143 if (cur_proc_ptr == (proc_t *) NULL) 3144 { 3145 as_warn (_(".fmask outside of .ent")); 3146 demand_empty_rest_of_line (); 3147 return; 3148 } 3149 3150 if (get_absolute_expression_and_terminator (&val) != ',') 3151 { 3152 as_warn (_("bad .fmask directive")); 3153 --input_line_pointer; 3154 demand_empty_rest_of_line (); 3155 return; 3156 } 3157 3158 cur_proc_ptr->pdr.fregmask = val; 3159 cur_proc_ptr->pdr.fregoffset = get_absolute_expression (); 3160 3161 demand_empty_rest_of_line (); 3162} 3163 3164/* Parse .frame directives. */ 3165 3166void 3167ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED) 3168{ 3169 long val; 3170 3171 if (cur_proc_ptr == (proc_t *) NULL) 3172 { 3173 as_warn (_(".frame outside of .ent")); 3174 demand_empty_rest_of_line (); 3175 return; 3176 } 3177 3178 cur_proc_ptr->pdr.framereg = tc_get_register (1); 3179 3180 SKIP_WHITESPACE (); 3181 if (*input_line_pointer++ != ',' 3182 || get_absolute_expression_and_terminator (&val) != ',') 3183 { 3184 as_warn (_("bad .frame directive")); 3185 --input_line_pointer; 3186 demand_empty_rest_of_line (); 3187 return; 3188 } 3189 3190 cur_proc_ptr->pdr.frameoffset = val; 3191 3192 cur_proc_ptr->pdr.pcreg = tc_get_register (0); 3193 3194 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to 3195 Sandro. I don't yet know where this value should be stored, if 3196 anywhere. Don't call demand_empty_rest_of_line (). */ 3197 s_ignore (42); 3198} 3199 3200/* Parse .mask directives. */ 3201 3202void 3203ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED) 3204{ 3205 long val; 3206 3207 if (cur_proc_ptr == (proc_t *) NULL) 3208 { 3209 as_warn (_(".mask outside of .ent")); 3210 demand_empty_rest_of_line (); 3211 return; 3212 } 3213 3214 if (get_absolute_expression_and_terminator (&val) != ',') 3215 { 3216 as_warn (_("bad .mask directive")); 3217 --input_line_pointer; 3218 demand_empty_rest_of_line (); 3219 return; 3220 } 3221 3222 cur_proc_ptr->pdr.regmask = val; 3223 cur_proc_ptr->pdr.regoffset = get_absolute_expression (); 3224 3225 demand_empty_rest_of_line (); 3226} 3227 3228/* Parse .loc directives. */ 3229 3230void 3231ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED) 3232{ 3233 lineno_list_t *list; 3234 symint_t lineno; 3235 3236 if (cur_file_ptr == (efdr_t *) NULL) 3237 { 3238 as_warn (_(".loc before .file")); 3239 demand_empty_rest_of_line (); 3240 return; 3241 } 3242 3243 if (now_seg != text_section) 3244 { 3245 as_warn (_(".loc outside of .text")); 3246 demand_empty_rest_of_line (); 3247 return; 3248 } 3249 3250 /* Skip the file number. */ 3251 SKIP_WHITESPACE (); 3252 get_absolute_expression (); 3253 SKIP_WHITESPACE (); 3254 3255 lineno = get_absolute_expression (); 3256 3257#ifndef NO_LISTING 3258 if (listing) 3259 listing_source_line (lineno); 3260#endif 3261 3262 /* If we're building stabs, then output a special label rather than 3263 ECOFF line number info. */ 3264 if (stabs_seen) 3265 { 3266 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text, 3267 symbol_new (FAKE_LABEL_NAME, now_seg, 3268 (valueT) frag_now_fix (), 3269 frag_now), 3270 (bfd_vma) 0, 0, lineno); 3271 return; 3272 } 3273 3274 list = allocate_lineno_list (); 3275 3276 list->next = (lineno_list_t *) NULL; 3277 list->file = cur_file_ptr; 3278 list->proc = cur_proc_ptr; 3279 list->frag = frag_now; 3280 list->paddr = frag_now_fix (); 3281 list->lineno = lineno; 3282 3283 /* We don't want to merge files which have line numbers. */ 3284 cur_file_ptr->fdr.fMerge = 0; 3285 3286 /* A .loc directive will sometimes appear before a .ent directive, 3287 which means that cur_proc_ptr will be NULL here. Arrange to 3288 patch this up. */ 3289 if (cur_proc_ptr == (proc_t *) NULL) 3290 { 3291 lineno_list_t **pl; 3292 3293 pl = &noproc_lineno; 3294 while (*pl != (lineno_list_t *) NULL) 3295 pl = &(*pl)->next; 3296 *pl = list; 3297 } 3298 else 3299 { 3300 last_lineno = list; 3301 *last_lineno_ptr = list; 3302 last_lineno_ptr = &list->next; 3303 } 3304} 3305 3306/* The MIPS assembler sometimes inserts nop instructions in the 3307 instruction stream. When this happens, we must patch up the .loc 3308 information so that it points to the instruction after the nop. */ 3309 3310void 3311ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset) 3312{ 3313 if (last_lineno != NULL 3314 && last_lineno->frag == old_frag 3315 && last_lineno->paddr == old_frag_offset) 3316 { 3317 last_lineno->frag = frag_now; 3318 last_lineno->paddr = frag_now_fix (); 3319 } 3320} 3321 3322/* Make sure the @stabs symbol is emitted. */ 3323 3324static void 3325mark_stabs (int ignore ATTRIBUTE_UNUSED) 3326{ 3327 if (! stabs_seen) 3328 { 3329 /* Add a dummy @stabs symbol. */ 3330 stabs_seen = 1; 3331 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info, 3332 (symbolS *) NULL, 3333 (bfd_vma) 0, (symint_t) -1, 3334 ECOFF_MARK_STAB (0)); 3335 } 3336} 3337 3338/* Parse .weakext directives. */ 3339#ifndef TC_MIPS 3340/* For TC_MIPS use the version in tc-mips.c. */ 3341void 3342ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED) 3343{ 3344 char *name; 3345 int c; 3346 symbolS *symbolP; 3347 expressionS exp; 3348 3349 c = get_symbol_name (&name); 3350 symbolP = symbol_find_or_make (name); 3351 (void) restore_line_pointer (c); 3352 3353 SKIP_WHITESPACE (); 3354 3355 if (*input_line_pointer == ',') 3356 { 3357 if (S_IS_DEFINED (symbolP)) 3358 { 3359 as_bad (_("symbol `%s' is already defined"), 3360 S_GET_NAME (symbolP)); 3361 ignore_rest_of_line (); 3362 return; 3363 } 3364 3365 ++input_line_pointer; 3366 SKIP_WHITESPACE (); 3367 if (! is_end_of_line[(unsigned char) *input_line_pointer]) 3368 { 3369 expression (&exp); 3370 if (exp.X_op != O_symbol) 3371 { 3372 as_bad (_("bad .weakext directive")); 3373 ignore_rest_of_line (); 3374 return; 3375 } 3376 symbol_set_value_expression (symbolP, &exp); 3377 } 3378 } 3379 3380 S_SET_WEAK (symbolP); 3381 3382 demand_empty_rest_of_line (); 3383} 3384#endif /* not TC_MIPS */ 3385 3386/* Handle .stabs directives. The actual parsing routine is done by a 3387 generic routine. This routine is called via OBJ_PROCESS_STAB. 3388 When this is called, input_line_pointer will be pointing at the 3389 value field of the stab. 3390 3391 .stabs directives have five fields: 3392 "string" a string, encoding the type information. 3393 code a numeric code, defined in <stab.h> 3394 0 a zero 3395 desc a zero or line number 3396 value a numeric value or an address. 3397 3398 If the value is relocatable, we transform this into: 3399 iss points as an index into string space 3400 value value from lookup of the name 3401 st st from lookup of the name 3402 sc sc from lookup of the name 3403 index code|CODE_MASK 3404 3405 If the value is not relocatable, we transform this into: 3406 iss points as an index into string space 3407 value value 3408 st st_Nil 3409 sc sc_Nil 3410 index code|CODE_MASK 3411 3412 .stabn directives have four fields (string is null): 3413 code a numeric code, defined in <stab.h> 3414 0 a zero 3415 desc a zero or a line number 3416 value a numeric value or an address. */ 3417 3418void 3419ecoff_stab (segT sec ATTRIBUTE_UNUSED, 3420 int what, 3421 const char *string, 3422 int type, 3423 int other, 3424 int desc) 3425{ 3426 efdr_t *save_file_ptr = cur_file_ptr; 3427 symbolS *sym; 3428 symint_t value; 3429 bfd_vma addend; 3430 st_t st; 3431 sc_t sc; 3432 symint_t indx; 3433 localsym_t *hold = NULL; 3434 3435 ecoff_debugging_seen = 1; 3436 3437 /* We don't handle .stabd. */ 3438 if (what != 's' && what != 'n') 3439 { 3440 as_bad (_(".stab%c is not supported"), what); 3441 return; 3442 } 3443 3444 /* A .stabn uses a null name, not an empty string. */ 3445 if (what == 'n') 3446 string = NULL; 3447 3448 /* We ignore the other field. */ 3449 if (other != 0) 3450 as_warn (_(".stab%c: ignoring non-zero other field"), what); 3451 3452 /* Make sure we have a current file. */ 3453 if (cur_file_ptr == (efdr_t *) NULL) 3454 { 3455 add_file ((const char *) NULL, 0, 1); 3456 save_file_ptr = cur_file_ptr; 3457 } 3458 3459 /* For stabs in ECOFF, the first symbol must be @stabs. This is a 3460 signal to gdb. */ 3461 if (stabs_seen == 0) 3462 mark_stabs (0); 3463 3464 /* Line number stabs are handled differently, since they have two 3465 values, the line number and the address of the label. We use the 3466 index field (aka desc) to hold the line number, and the value 3467 field to hold the address. The symbol type is st_Label, which 3468 should be different from the other stabs, so that gdb can 3469 recognize it. */ 3470 if (type == N_SLINE) 3471 { 3472 SYMR dummy_symr; 3473 char *name; 3474 char name_end; 3475 3476#ifndef NO_LISTING 3477 if (listing) 3478 listing_source_line ((unsigned int) desc); 3479#endif 3480 3481 dummy_symr.index = desc; 3482 if (dummy_symr.index != desc) 3483 { 3484 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"), 3485 desc, what); 3486 return; 3487 } 3488 3489 name_end = get_symbol_name (&name); 3490 sym = symbol_find_or_make (name); 3491 (void) restore_line_pointer (name_end); 3492 3493 value = 0; 3494 addend = 0; 3495 st = st_Label; 3496 sc = sc_Text; 3497 indx = desc; 3498 } 3499 else 3500 { 3501#ifndef NO_LISTING 3502 if (listing && (type == N_SO || type == N_SOL)) 3503 listing_source_file (string); 3504#endif 3505 3506 if (ISDIGIT (*input_line_pointer) 3507 || *input_line_pointer == '-' 3508 || *input_line_pointer == '+') 3509 { 3510 st = st_Nil; 3511 sc = sc_Nil; 3512 sym = (symbolS *) NULL; 3513 value = get_absolute_expression (); 3514 addend = 0; 3515 } 3516 else if (! is_name_beginner ((unsigned char) *input_line_pointer)) 3517 { 3518 as_warn (_("illegal .stab%c directive, bad character"), what); 3519 return; 3520 } 3521 else 3522 { 3523 expressionS exp; 3524 3525 sc = sc_Nil; 3526 st = st_Nil; 3527 3528 expression (&exp); 3529 if (exp.X_op == O_constant) 3530 { 3531 sym = NULL; 3532 value = exp.X_add_number; 3533 addend = 0; 3534 } 3535 else if (exp.X_op == O_symbol) 3536 { 3537 sym = exp.X_add_symbol; 3538 value = 0; 3539 addend = exp.X_add_number; 3540 } 3541 else 3542 { 3543 sym = make_expr_symbol (&exp); 3544 value = 0; 3545 addend = 0; 3546 } 3547 } 3548 3549 indx = ECOFF_MARK_STAB (type); 3550 } 3551 3552 /* Don't store the stabs symbol we are creating as the type of the 3553 ECOFF symbol. We want to compute the type of the ECOFF symbol 3554 independently. */ 3555 if (sym != (symbolS *) NULL) 3556 hold = symbol_get_obj (sym)->ecoff_symbol; 3557 3558 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx); 3559 3560 if (sym != (symbolS *) NULL) 3561 symbol_get_obj (sym)->ecoff_symbol = hold; 3562 3563 /* Restore normal file type. */ 3564 cur_file_ptr = save_file_ptr; 3565} 3566 3567/* Frob an ECOFF symbol. Small common symbols go into a special 3568 .scommon section rather than bfd_com_section. */ 3569 3570void 3571ecoff_frob_symbol (symbolS *sym) 3572{ 3573 if (S_IS_COMMON (sym) 3574 && S_GET_VALUE (sym) > 0 3575 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput)) 3576 { 3577 static asection scom_section; 3578 static asymbol scom_symbol; 3579 3580 /* We must construct a fake section similar to bfd_com_section 3581 but with the name .scommon. */ 3582 if (scom_section.name == NULL) 3583 { 3584 scom_section = *bfd_com_section_ptr; 3585 scom_section.name = ".scommon"; 3586 scom_section.output_section = &scom_section; 3587 scom_section.symbol = &scom_symbol; 3588 scom_section.symbol_ptr_ptr = &scom_section.symbol; 3589 scom_symbol = *bfd_com_section_ptr->symbol; 3590 scom_symbol.name = ".scommon"; 3591 scom_symbol.section = &scom_section; 3592 } 3593 S_SET_SEGMENT (sym, &scom_section); 3594 } 3595 3596 /* Double check weak symbols. */ 3597 if (S_IS_WEAK (sym)) 3598 { 3599 if (S_IS_COMMON (sym)) 3600 as_bad (_("symbol `%s' can not be both weak and common"), 3601 S_GET_NAME (sym)); 3602 } 3603} 3604 3605/* Add bytes to the symbolic information buffer. */ 3606 3607static char * 3608ecoff_add_bytes (char **buf, 3609 char **bufend, 3610 char *bufptr, 3611 unsigned long need) 3612{ 3613 unsigned long at; 3614 unsigned long want; 3615 3616 at = bufptr - *buf; 3617 need -= *bufend - bufptr; 3618 if (need < PAGE_SIZE) 3619 need = PAGE_SIZE; 3620 want = (*bufend - *buf) + need; 3621 *buf = XRESIZEVEC (char, *buf, want); 3622 *bufend = *buf + want; 3623 return *buf + at; 3624} 3625 3626/* Adjust the symbolic information buffer to the alignment required 3627 for the ECOFF target debugging information. */ 3628 3629static unsigned long 3630ecoff_padding_adjust (const struct ecoff_debug_swap *backend, 3631 char **buf, 3632 char **bufend, 3633 unsigned long offset, 3634 char **bufptrptr) 3635{ 3636 bfd_size_type align; 3637 3638 align = backend->debug_align; 3639 if ((offset & (align - 1)) != 0) 3640 { 3641 unsigned long add; 3642 3643 add = align - (offset & (align - 1)); 3644 if ((unsigned long) (*bufend - (*buf + offset)) < add) 3645 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add); 3646 memset (*buf + offset, 0, add); 3647 offset += add; 3648 if (bufptrptr != (char **) NULL) 3649 *bufptrptr = *buf + offset; 3650 } 3651 3652 return offset; 3653} 3654 3655/* Build the line number information. */ 3656 3657static unsigned long 3658ecoff_build_lineno (const struct ecoff_debug_swap *backend, 3659 char **buf, 3660 char **bufend, 3661 unsigned long offset, 3662 long *linecntptr) 3663{ 3664 char *bufptr; 3665 lineno_list_t *l; 3666 lineno_list_t *last; 3667 efdr_t *file; 3668 proc_t *proc; 3669 unsigned long c; 3670 long iline; 3671 long totcount; 3672 lineno_list_t first; 3673 lineno_list_t *local_first_lineno = first_lineno; 3674 3675 if (linecntptr != (long *) NULL) 3676 *linecntptr = 0; 3677 3678 bufptr = *buf + offset; 3679 3680 file = (efdr_t *) NULL; 3681 proc = (proc_t *) NULL; 3682 last = (lineno_list_t *) NULL; 3683 c = offset; 3684 iline = 0; 3685 totcount = 0; 3686 3687 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to 3688 remove this code. */ 3689 /* For some reason the address of the first procedure is ignored 3690 when reading line numbers. This doesn't matter if the address of 3691 the first procedure is 0, but when gcc is generating MIPS 3692 embedded PIC code, it will put strings in the .text section 3693 before the first procedure. We cope by inserting a dummy line if 3694 the address of the first procedure is not 0. Hopefully this 3695 won't screw things up too badly. 3696 3697 Don't do this for ECOFF assembly source line numbers. They work 3698 without this extra attention. */ 3699 if (debug_type != DEBUG_ECOFF 3700 && first_proc_ptr != (proc_t *) NULL 3701 && local_first_lineno != (lineno_list_t *) NULL 3702 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym) 3703 + bfd_section_vma (S_GET_SEGMENT (first_proc_ptr->sym->as_sym))) 3704 != 0)) 3705 { 3706 first.file = local_first_lineno->file; 3707 first.proc = local_first_lineno->proc; 3708 first.frag = &zero_address_frag; 3709 first.paddr = 0; 3710 first.lineno = 0; 3711 3712 first.next = local_first_lineno; 3713 local_first_lineno = &first; 3714 } 3715 3716 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next) 3717 { 3718 long count; 3719 long delta; 3720 3721 /* Get the offset to the memory address of the next line number 3722 (in words). Do this first, so that we can skip ahead to the 3723 next useful line number entry. */ 3724 if (l->next == (lineno_list_t *) NULL) 3725 { 3726 /* We want a count of zero, but it will be decremented 3727 before it is used. */ 3728 count = 1; 3729 } 3730 else if (l->next->frag->fr_address + l->next->paddr 3731 > l->frag->fr_address + l->paddr) 3732 { 3733 count = ((l->next->frag->fr_address + l->next->paddr 3734 - (l->frag->fr_address + l->paddr)) 3735 >> 2); 3736 } 3737 else 3738 { 3739 /* Don't change last, so we still get the right delta. */ 3740 continue; 3741 } 3742 3743 if (l->file != file || l->proc != proc) 3744 { 3745 if (l->proc != proc && proc != (proc_t *) NULL) 3746 proc->pdr.lnHigh = last->lineno; 3747 if (l->file != file && file != (efdr_t *) NULL) 3748 { 3749 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3750 file->fdr.cline = totcount + count; 3751 if (linecntptr != (long *) NULL) 3752 *linecntptr += totcount + count; 3753 totcount = 0; 3754 } 3755 3756 if (l->file != file) 3757 { 3758 efdr_t *last_file = file; 3759 3760 file = l->file; 3761 if (last_file != (efdr_t *) NULL) 3762 file->fdr.ilineBase 3763 = last_file->fdr.ilineBase + last_file->fdr.cline; 3764 else 3765 file->fdr.ilineBase = 0; 3766 file->fdr.cbLineOffset = c; 3767 } 3768 if (l->proc != proc) 3769 { 3770 proc = l->proc; 3771 if (proc != (proc_t *) NULL) 3772 { 3773 proc->pdr.lnLow = l->lineno; 3774 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset; 3775 proc->pdr.iline = totcount; 3776 } 3777 } 3778 3779 last = (lineno_list_t *) NULL; 3780 } 3781 3782 totcount += count; 3783 3784 /* Get the offset to this line number. */ 3785 if (last == (lineno_list_t *) NULL) 3786 delta = 0; 3787 else 3788 delta = l->lineno - last->lineno; 3789 3790 /* Put in the offset to this line number. */ 3791 while (delta != 0) 3792 { 3793 int setcount; 3794 3795 /* 1 is added to each count read. */ 3796 --count; 3797 /* We can only adjust the word count by up to 15 words at a 3798 time. */ 3799 if (count <= 0x0f) 3800 { 3801 setcount = count; 3802 count = 0; 3803 } 3804 else 3805 { 3806 setcount = 0x0f; 3807 count -= 0x0f; 3808 } 3809 if (delta >= -7 && delta <= 7) 3810 { 3811 if (bufptr >= *bufend) 3812 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3813 *bufptr++ = setcount + (delta << 4); 3814 delta = 0; 3815 ++c; 3816 } 3817 else 3818 { 3819 int set; 3820 3821 if (*bufend - bufptr < 3) 3822 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3); 3823 *bufptr++ = setcount + (8 << 4); 3824 if (delta < -0x8000) 3825 { 3826 set = -0x8000; 3827 delta += 0x8000; 3828 } 3829 else if (delta > 0x7fff) 3830 { 3831 set = 0x7fff; 3832 delta -= 0x7fff; 3833 } 3834 else 3835 { 3836 set = delta; 3837 delta = 0; 3838 } 3839 *bufptr++ = set >> 8; 3840 *bufptr++ = set & 0xffff; 3841 c += 3; 3842 } 3843 } 3844 3845 /* Finish adjusting the count. */ 3846 while (count > 0) 3847 { 3848 if (bufptr >= *bufend) 3849 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1); 3850 /* 1 is added to each count read. */ 3851 --count; 3852 if (count > 0x0f) 3853 { 3854 *bufptr++ = 0x0f; 3855 count -= 0x0f; 3856 } 3857 else 3858 { 3859 *bufptr++ = count; 3860 count = 0; 3861 } 3862 ++c; 3863 } 3864 3865 ++iline; 3866 last = l; 3867 } 3868 3869 if (proc != (proc_t *) NULL) 3870 proc->pdr.lnHigh = last->lineno; 3871 if (file != (efdr_t *) NULL) 3872 { 3873 file->fdr.cbLine = c - file->fdr.cbLineOffset; 3874 file->fdr.cline = totcount; 3875 } 3876 3877 if (linecntptr != (long *) NULL) 3878 *linecntptr += totcount; 3879 3880 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr); 3881 3882 return c; 3883} 3884 3885/* Build and swap out the symbols. */ 3886 3887static unsigned long 3888ecoff_build_symbols (const struct ecoff_debug_swap *backend, 3889 char **buf, 3890 char **bufend, 3891 unsigned long offset) 3892{ 3893 const bfd_size_type external_sym_size = backend->external_sym_size; 3894 void (* const swap_sym_out) (bfd *, const SYMR *, void *) 3895 = backend->swap_sym_out; 3896 char *sym_out; 3897 long isym; 3898 vlinks_t *file_link; 3899 3900 sym_out = *buf + offset; 3901 3902 isym = 0; 3903 3904 /* The symbols are stored by file. */ 3905 for (file_link = file_desc.first; 3906 file_link != (vlinks_t *) NULL; 3907 file_link = file_link->next) 3908 { 3909 int ifilesym; 3910 int fil_cnt; 3911 efdr_t *fil_ptr; 3912 efdr_t *fil_end; 3913 3914 if (file_link->next == (vlinks_t *) NULL) 3915 fil_cnt = file_desc.objects_last_page; 3916 else 3917 fil_cnt = file_desc.objects_per_page; 3918 fil_ptr = file_link->datum->file; 3919 fil_end = fil_ptr + fil_cnt; 3920 for (; fil_ptr < fil_end; fil_ptr++) 3921 { 3922 vlinks_t *sym_link; 3923 3924 fil_ptr->fdr.isymBase = isym; 3925 ifilesym = isym; 3926 for (sym_link = fil_ptr->symbols.first; 3927 sym_link != (vlinks_t *) NULL; 3928 sym_link = sym_link->next) 3929 { 3930 int sym_cnt; 3931 localsym_t *sym_ptr; 3932 localsym_t *sym_end; 3933 3934 if (sym_link->next == (vlinks_t *) NULL) 3935 sym_cnt = fil_ptr->symbols.objects_last_page; 3936 else 3937 sym_cnt = fil_ptr->symbols.objects_per_page; 3938 sym_ptr = sym_link->datum->sym; 3939 sym_end = sym_ptr + sym_cnt; 3940 for (; sym_ptr < sym_end; sym_ptr++) 3941 { 3942 int local; 3943 symbolS *as_sym; 3944 forward_t *f; 3945 3946 know (sym_ptr->file_ptr == fil_ptr); 3947 3948 /* If there is no associated gas symbol, then this 3949 is a pure debugging symbol. We have already 3950 added the name (if any) to fil_ptr->strings. 3951 Otherwise we must decide whether this is an 3952 external or a local symbol (actually, it may be 3953 both if the local provides additional debugging 3954 information for the external). */ 3955 local = 1; 3956 as_sym = sym_ptr->as_sym; 3957 if (as_sym != (symbolS *) NULL) 3958 { 3959 symint_t indx; 3960 3961 /* The value of a block start symbol is the 3962 offset from the start of the procedure. For 3963 other symbols we just use the gas value (but 3964 we must offset it by the vma of the section, 3965 just as BFD does, because BFD will not see 3966 this value). */ 3967 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block 3968 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text) 3969 { 3970 symbolS *begin_sym; 3971 3972 know (sym_ptr->proc_ptr != (proc_t *) NULL); 3973 begin_sym = sym_ptr->proc_ptr->sym->as_sym; 3974 if (S_GET_SEGMENT (as_sym) 3975 != S_GET_SEGMENT (begin_sym)) 3976 as_warn (_(".begin/.bend in different segments")); 3977 sym_ptr->ecoff_sym.asym.value = 3978 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym); 3979 } 3980 else 3981 sym_ptr->ecoff_sym.asym.value = 3982 (S_GET_VALUE (as_sym) 3983 + bfd_section_vma (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_ptr) 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 FAKE_LABEL_CHAR in the names. */ 4106 if (local 4107 && sym_ptr->ecoff_sym.asym.st != st_End 4108 && strchr (sym_ptr->name, FAKE_LABEL_CHAR) == 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 = (st_t) 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 *, void *) 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_section_vma (S_GET_SEGMENT (adr_sym))); 4312 if (first) 4313 { 4314 /* This code used to force the adr of the very 4315 first fdr to be 0. However, the native tools 4316 don't do that, and I can't remember why it 4317 used to work that way, so I took it out. */ 4318 fil_ptr->fdr.adr = adr; 4319 first = 0; 4320 } 4321 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr; 4322 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size) 4323 pdr_out = ecoff_add_bytes (buf, bufend, 4324 pdr_out, 4325 external_pdr_size); 4326 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out); 4327 pdr_out += external_pdr_size; 4328 ++iproc; 4329 } 4330 } 4331 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst; 4332 } 4333 } 4334 4335 return offset + iproc * external_pdr_size; 4336} 4337 4338/* Swap out the aux information. */ 4339 4340static unsigned long 4341ecoff_build_aux (const struct ecoff_debug_swap *backend, 4342 char **buf, 4343 char **bufend, 4344 unsigned long offset) 4345{ 4346 int bigendian; 4347 union aux_ext *aux_out; 4348 long iaux; 4349 vlinks_t *file_link; 4350 4351 bigendian = bfd_big_endian (stdoutput); 4352 4353 aux_out = (union aux_ext *) (*buf + offset); 4354 4355 iaux = 0; 4356 4357 /* The aux entries are stored by file. */ 4358 for (file_link = file_desc.first; 4359 file_link != (vlinks_t *) NULL; 4360 file_link = file_link->next) 4361 { 4362 int fil_cnt; 4363 efdr_t *fil_ptr; 4364 efdr_t *fil_end; 4365 4366 if (file_link->next == (vlinks_t *) NULL) 4367 fil_cnt = file_desc.objects_last_page; 4368 else 4369 fil_cnt = file_desc.objects_per_page; 4370 fil_ptr = file_link->datum->file; 4371 fil_end = fil_ptr + fil_cnt; 4372 for (; fil_ptr < fil_end; fil_ptr++) 4373 { 4374 vlinks_t *aux_link; 4375 4376 fil_ptr->fdr.fBigendian = bigendian; 4377 fil_ptr->fdr.iauxBase = iaux; 4378 for (aux_link = fil_ptr->aux_syms.first; 4379 aux_link != (vlinks_t *) NULL; 4380 aux_link = aux_link->next) 4381 { 4382 int aux_cnt; 4383 aux_t *aux_ptr; 4384 aux_t *aux_end; 4385 4386 if (aux_link->next == (vlinks_t *) NULL) 4387 aux_cnt = fil_ptr->aux_syms.objects_last_page; 4388 else 4389 aux_cnt = fil_ptr->aux_syms.objects_per_page; 4390 aux_ptr = aux_link->datum->aux; 4391 aux_end = aux_ptr + aux_cnt; 4392 for (; aux_ptr < aux_end; aux_ptr++) 4393 { 4394 if ((unsigned long) (*bufend - (char *) aux_out) 4395 < sizeof (union aux_ext)) 4396 aux_out = ((union aux_ext *) 4397 ecoff_add_bytes (buf, bufend, 4398 (char *) aux_out, 4399 sizeof (union aux_ext))); 4400 switch (aux_ptr->type) 4401 { 4402 case aux_tir: 4403 (*backend->swap_tir_out) (bigendian, 4404 &aux_ptr->data.ti, 4405 &aux_out->a_ti); 4406 break; 4407 case aux_rndx: 4408 (*backend->swap_rndx_out) (bigendian, 4409 &aux_ptr->data.rndx, 4410 &aux_out->a_rndx); 4411 break; 4412 case aux_dnLow: 4413 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow, 4414 aux_out); 4415 break; 4416 case aux_dnHigh: 4417 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh, 4418 aux_out); 4419 break; 4420 case aux_isym: 4421 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym, 4422 aux_out); 4423 break; 4424 case aux_iss: 4425 AUX_PUT_ISS (bigendian, aux_ptr->data.iss, 4426 aux_out); 4427 break; 4428 case aux_width: 4429 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width, 4430 aux_out); 4431 break; 4432 case aux_count: 4433 AUX_PUT_COUNT (bigendian, aux_ptr->data.count, 4434 aux_out); 4435 break; 4436 } 4437 4438 ++aux_out; 4439 ++iaux; 4440 } 4441 } 4442 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase; 4443 } 4444 } 4445 4446 return ecoff_padding_adjust (backend, buf, bufend, 4447 offset + iaux * sizeof (union aux_ext), 4448 (char **) NULL); 4449} 4450 4451/* Copy out the strings from a varray_t. This returns the number of 4452 bytes copied, rather than the new offset. */ 4453 4454static unsigned long 4455ecoff_build_strings (char **buf, 4456 char **bufend, 4457 unsigned long offset, 4458 varray_t *vp) 4459{ 4460 unsigned long istr; 4461 char *str_out; 4462 vlinks_t *str_link; 4463 4464 str_out = *buf + offset; 4465 4466 istr = 0; 4467 4468 for (str_link = vp->first; 4469 str_link != (vlinks_t *) NULL; 4470 str_link = str_link->next) 4471 { 4472 unsigned long str_cnt; 4473 4474 if (str_link->next == (vlinks_t *) NULL) 4475 str_cnt = vp->objects_last_page; 4476 else 4477 str_cnt = vp->objects_per_page; 4478 4479 if ((unsigned long)(*bufend - str_out) < str_cnt) 4480 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt); 4481 4482 memcpy (str_out, str_link->datum->byte, str_cnt); 4483 str_out += str_cnt; 4484 istr += str_cnt; 4485 } 4486 4487 return istr; 4488} 4489 4490/* Dump out the local strings. */ 4491 4492static unsigned long 4493ecoff_build_ss (const struct ecoff_debug_swap *backend, 4494 char **buf, 4495 char **bufend, 4496 unsigned long offset) 4497{ 4498 long iss; 4499 vlinks_t *file_link; 4500 4501 iss = 0; 4502 4503 for (file_link = file_desc.first; 4504 file_link != (vlinks_t *) NULL; 4505 file_link = file_link->next) 4506 { 4507 int fil_cnt; 4508 efdr_t *fil_ptr; 4509 efdr_t *fil_end; 4510 4511 if (file_link->next == (vlinks_t *) NULL) 4512 fil_cnt = file_desc.objects_last_page; 4513 else 4514 fil_cnt = file_desc.objects_per_page; 4515 fil_ptr = file_link->datum->file; 4516 fil_end = fil_ptr + fil_cnt; 4517 for (; fil_ptr < fil_end; fil_ptr++) 4518 { 4519 long ss_cnt; 4520 4521 fil_ptr->fdr.issBase = iss; 4522 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss, 4523 &fil_ptr->strings); 4524 fil_ptr->fdr.cbSs = ss_cnt; 4525 iss += ss_cnt; 4526 } 4527 } 4528 4529 return ecoff_padding_adjust (backend, buf, bufend, offset + iss, 4530 (char **) NULL); 4531} 4532 4533/* Swap out the file descriptors. */ 4534 4535static unsigned long 4536ecoff_build_fdr (const struct ecoff_debug_swap *backend, 4537 char **buf, 4538 char **bufend, 4539 unsigned long offset) 4540{ 4541 const bfd_size_type external_fdr_size = backend->external_fdr_size; 4542 void (* const swap_fdr_out) (bfd *, const FDR *, void *) 4543 = backend->swap_fdr_out; 4544 long ifile; 4545 char *fdr_out; 4546 vlinks_t *file_link; 4547 4548 ifile = 0; 4549 4550 fdr_out = *buf + offset; 4551 4552 for (file_link = file_desc.first; 4553 file_link != (vlinks_t *) NULL; 4554 file_link = file_link->next) 4555 { 4556 int fil_cnt; 4557 efdr_t *fil_ptr; 4558 efdr_t *fil_end; 4559 4560 if (file_link->next == (vlinks_t *) NULL) 4561 fil_cnt = file_desc.objects_last_page; 4562 else 4563 fil_cnt = file_desc.objects_per_page; 4564 fil_ptr = file_link->datum->file; 4565 fil_end = fil_ptr + fil_cnt; 4566 for (; fil_ptr < fil_end; fil_ptr++) 4567 { 4568 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size) 4569 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out, 4570 external_fdr_size); 4571 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out); 4572 fdr_out += external_fdr_size; 4573 ++ifile; 4574 } 4575 } 4576 4577 return offset + ifile * external_fdr_size; 4578} 4579 4580/* Set up the external symbols. These are supposed to be handled by 4581 the backend. This routine just gets the right information and 4582 calls a backend function to deal with it. */ 4583 4584static void 4585ecoff_setup_ext (void) 4586{ 4587 symbolS *sym; 4588 4589 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4590 { 4591 if (symbol_get_obj (sym)->ecoff_symbol == NULL) 4592 continue; 4593 4594 /* If this is a local symbol, then force the fields to zero. */ 4595 if (! S_IS_EXTERNAL (sym) 4596 && ! S_IS_WEAK (sym) 4597 && S_IS_DEFINED (sym)) 4598 { 4599 struct localsym *lsym; 4600 4601 lsym = symbol_get_obj (sym)->ecoff_symbol; 4602 lsym->ecoff_sym.asym.value = 0; 4603 lsym->ecoff_sym.asym.st = (int) st_Nil; 4604 lsym->ecoff_sym.asym.sc = (int) sc_Nil; 4605 lsym->ecoff_sym.asym.index = indexNil; 4606 } 4607 4608 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym); 4609 } 4610} 4611 4612/* Build the ECOFF debugging information. */ 4613 4614unsigned long 4615ecoff_build_debug (HDRR *hdr, 4616 char **bufp, 4617 const struct ecoff_debug_swap *backend) 4618{ 4619 const bfd_size_type external_pdr_size = backend->external_pdr_size; 4620 tag_t *ptag; 4621 tag_t *ptag_next; 4622 efdr_t *fil_ptr; 4623 int end_warning; 4624 efdr_t *hold_file_ptr; 4625 proc_t *hold_proc_ptr; 4626 symbolS *sym; 4627 char *buf; 4628 char *bufend; 4629 unsigned long offset; 4630 4631 /* Make sure we have a file. */ 4632 if (first_file == (efdr_t *) NULL) 4633 add_file ((const char *) NULL, 0, 1); 4634 4635 /* Handle any top level tags. */ 4636 for (ptag = top_tag_head->first_tag; 4637 ptag != (tag_t *) NULL; 4638 ptag = ptag_next) 4639 { 4640 if (ptag->forward_ref != (forward_t *) NULL) 4641 add_unknown_tag (ptag); 4642 4643 ptag_next = ptag->same_block; 4644 ptag->hash_ptr->tag_ptr = ptag->same_name; 4645 free_tag (ptag); 4646 } 4647 4648 free_thead (top_tag_head); 4649 4650 /* Look through the symbols. Add debugging information for each 4651 symbol that has not already received it. */ 4652 hold_file_ptr = cur_file_ptr; 4653 hold_proc_ptr = cur_proc_ptr; 4654 cur_proc_ptr = (proc_t *) NULL; 4655 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym)) 4656 { 4657 if (symbol_get_obj (sym)->ecoff_symbol != NULL 4658 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL 4659 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0) 4660 continue; 4661 4662 cur_file_ptr = symbol_get_obj (sym)->ecoff_file; 4663 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym, 4664 (bfd_vma) 0, S_GET_VALUE (sym), indexNil); 4665 } 4666 cur_proc_ptr = hold_proc_ptr; 4667 cur_file_ptr = hold_file_ptr; 4668 4669 /* Output an ending symbol for all the files. We have to do this 4670 here for the last file, so we may as well do it for all of the 4671 files. */ 4672 end_warning = 0; 4673 for (fil_ptr = first_file; 4674 fil_ptr != (efdr_t *) NULL; 4675 fil_ptr = fil_ptr->next_file) 4676 { 4677 cur_file_ptr = fil_ptr; 4678 while (cur_file_ptr->cur_scope != (scope_t *) NULL 4679 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL) 4680 { 4681 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev; 4682 if (! end_warning && ! cur_file_ptr->fake) 4683 { 4684 as_warn (_("missing .end or .bend at end of file")); 4685 end_warning = 1; 4686 } 4687 } 4688 if (cur_file_ptr->cur_scope != (scope_t *) NULL) 4689 (void) add_ecoff_symbol ((const char *) NULL, 4690 st_End, sc_Text, 4691 (symbolS *) NULL, 4692 (bfd_vma) 0, 4693 (symint_t) 0, 4694 (symint_t) 0); 4695 } 4696 4697 /* Build the symbolic information. */ 4698 offset = 0; 4699 buf = XNEWVEC (char, PAGE_SIZE); 4700 bufend = buf + PAGE_SIZE; 4701 4702 /* Build the line number information. */ 4703 hdr->cbLineOffset = offset; 4704 offset = ecoff_build_lineno (backend, &buf, &bufend, offset, 4705 &hdr->ilineMax); 4706 hdr->cbLine = offset - hdr->cbLineOffset; 4707 4708 /* We don't use dense numbers at all. */ 4709 hdr->idnMax = 0; 4710 hdr->cbDnOffset = 0; 4711 4712 /* We can't build the PDR table until we have built the symbols, 4713 because a PDR contains a symbol index. However, we set aside 4714 space at this point. */ 4715 hdr->ipdMax = proc_cnt; 4716 hdr->cbPdOffset = offset; 4717 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size) 4718 (void) ecoff_add_bytes (&buf, &bufend, buf + offset, 4719 proc_cnt * external_pdr_size); 4720 offset += proc_cnt * external_pdr_size; 4721 4722 /* Build the local symbols. */ 4723 hdr->cbSymOffset = offset; 4724 offset = ecoff_build_symbols (backend, &buf, &bufend, offset); 4725 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size; 4726 4727 /* Building the symbols initializes the symbol index in the PDR's. 4728 Now we can swap out the PDR's. */ 4729 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset); 4730 4731 /* We don't use optimization symbols. */ 4732 hdr->ioptMax = 0; 4733 hdr->cbOptOffset = 0; 4734 4735 /* Swap out the auxiliary type information. */ 4736 hdr->cbAuxOffset = offset; 4737 offset = ecoff_build_aux (backend, &buf, &bufend, offset); 4738 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext); 4739 4740 /* Copy out the local strings. */ 4741 hdr->cbSsOffset = offset; 4742 offset = ecoff_build_ss (backend, &buf, &bufend, offset); 4743 hdr->issMax = offset - hdr->cbSsOffset; 4744 4745 /* We don't use relative file descriptors. */ 4746 hdr->crfd = 0; 4747 hdr->cbRfdOffset = 0; 4748 4749 /* Swap out the file descriptors. */ 4750 hdr->cbFdOffset = offset; 4751 offset = ecoff_build_fdr (backend, &buf, &bufend, offset); 4752 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size; 4753 4754 /* Set up the external symbols, which are handled by the BFD back 4755 end. */ 4756 hdr->issExtMax = 0; 4757 hdr->cbSsExtOffset = 0; 4758 hdr->iextMax = 0; 4759 hdr->cbExtOffset = 0; 4760 ecoff_setup_ext (); 4761 4762 know ((offset & (backend->debug_align - 1)) == 0); 4763 4764 /* FIXME: This value should be determined from the .verstamp directive, 4765 with reasonable defaults in config files. */ 4766#ifdef TC_ALPHA 4767 hdr->vstamp = 0x030b; 4768#else 4769 hdr->vstamp = 0x020b; 4770#endif 4771 4772 *bufp = buf; 4773 return offset; 4774} 4775 4776/* Allocate a cluster of pages. */ 4777 4778#ifndef MALLOC_CHECK 4779 4780static page_type * 4781allocate_cluster (unsigned long npages) 4782{ 4783 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE); 4784 4785#ifdef ECOFF_DEBUG 4786 if (debug > 3) 4787 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value); 4788#endif 4789 4790 memset (value, 0, npages * PAGE_USIZE); 4791 4792 return value; 4793} 4794 4795static page_type *cluster_ptr = NULL; 4796static unsigned long pages_left = 0; 4797 4798#endif /* MALLOC_CHECK */ 4799 4800/* Allocate one page (which is initialized to 0). */ 4801 4802static page_type * 4803allocate_page (void) 4804{ 4805#ifndef MALLOC_CHECK 4806 4807 if (pages_left == 0) 4808 { 4809 pages_left = MAX_CLUSTER_PAGES; 4810 cluster_ptr = allocate_cluster (pages_left); 4811 } 4812 4813 pages_left--; 4814 return cluster_ptr++; 4815 4816#else /* MALLOC_CHECK */ 4817 4818 page_type *ptr; 4819 4820 ptr = xmalloc (PAGE_USIZE); 4821 memset (ptr, 0, PAGE_USIZE); 4822 return ptr; 4823 4824#endif /* MALLOC_CHECK */ 4825} 4826 4827/* Allocate scoping information. */ 4828 4829static scope_t * 4830allocate_scope (void) 4831{ 4832 scope_t *ptr; 4833 static scope_t initial_scope; 4834 4835#ifndef MALLOC_CHECK 4836 4837 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4838 if (ptr != (scope_t *) NULL) 4839 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free; 4840 else 4841 { 4842 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated; 4843 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page; 4844 4845 if (unallocated == 0) 4846 { 4847 unallocated = PAGE_SIZE / sizeof (scope_t); 4848 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page (); 4849 alloc_counts[(int) alloc_type_scope].total_pages++; 4850 } 4851 4852 ptr = &cur_page->scope[--unallocated]; 4853 alloc_counts[(int) alloc_type_scope].unallocated = unallocated; 4854 } 4855 4856#else 4857 4858 ptr = XNEW (scope_t); 4859 4860#endif 4861 4862 alloc_counts[(int) alloc_type_scope].total_alloc++; 4863 *ptr = initial_scope; 4864 return ptr; 4865} 4866 4867/* Free scoping information. */ 4868 4869static void 4870free_scope (scope_t *ptr) 4871{ 4872 alloc_counts[(int) alloc_type_scope].total_free++; 4873 4874#ifndef MALLOC_CHECK 4875 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope; 4876 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr; 4877#else 4878 free ((void *) ptr); 4879#endif 4880} 4881 4882/* Allocate links for pages in a virtual array. */ 4883 4884static vlinks_t * 4885allocate_vlinks (void) 4886{ 4887 vlinks_t *ptr; 4888 static vlinks_t initial_vlinks; 4889 4890#ifndef MALLOC_CHECK 4891 4892 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated; 4893 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page; 4894 4895 if (unallocated == 0) 4896 { 4897 unallocated = PAGE_SIZE / sizeof (vlinks_t); 4898 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page (); 4899 alloc_counts[(int) alloc_type_vlinks].total_pages++; 4900 } 4901 4902 ptr = &cur_page->vlinks[--unallocated]; 4903 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated; 4904 4905#else 4906 4907 ptr = XNEW (vlinks_t); 4908 4909#endif 4910 4911 alloc_counts[(int) alloc_type_vlinks].total_alloc++; 4912 *ptr = initial_vlinks; 4913 return ptr; 4914} 4915 4916/* Allocate string hash buckets. */ 4917 4918static shash_t * 4919allocate_shash (void) 4920{ 4921 shash_t *ptr; 4922 static shash_t initial_shash; 4923 4924#ifndef MALLOC_CHECK 4925 4926 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated; 4927 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page; 4928 4929 if (unallocated == 0) 4930 { 4931 unallocated = PAGE_SIZE / sizeof (shash_t); 4932 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page (); 4933 alloc_counts[(int) alloc_type_shash].total_pages++; 4934 } 4935 4936 ptr = &cur_page->shash[--unallocated]; 4937 alloc_counts[(int) alloc_type_shash].unallocated = unallocated; 4938 4939#else 4940 4941 ptr = XNEW (shash_t); 4942 4943#endif 4944 4945 alloc_counts[(int) alloc_type_shash].total_alloc++; 4946 *ptr = initial_shash; 4947 return ptr; 4948} 4949 4950/* Allocate type hash buckets. */ 4951 4952static thash_t * 4953allocate_thash (void) 4954{ 4955 thash_t *ptr; 4956 static thash_t initial_thash; 4957 4958#ifndef MALLOC_CHECK 4959 4960 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated; 4961 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page; 4962 4963 if (unallocated == 0) 4964 { 4965 unallocated = PAGE_SIZE / sizeof (thash_t); 4966 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page (); 4967 alloc_counts[(int) alloc_type_thash].total_pages++; 4968 } 4969 4970 ptr = &cur_page->thash[--unallocated]; 4971 alloc_counts[(int) alloc_type_thash].unallocated = unallocated; 4972 4973#else 4974 4975 ptr = XNEW (thash_t); 4976 4977#endif 4978 4979 alloc_counts[(int) alloc_type_thash].total_alloc++; 4980 *ptr = initial_thash; 4981 return ptr; 4982} 4983 4984/* Allocate structure, union, or enum tag information. */ 4985 4986static tag_t * 4987allocate_tag (void) 4988{ 4989 tag_t *ptr; 4990 static tag_t initial_tag; 4991 4992#ifndef MALLOC_CHECK 4993 4994 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 4995 if (ptr != (tag_t *) NULL) 4996 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free; 4997 else 4998 { 4999 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated; 5000 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page; 5001 5002 if (unallocated == 0) 5003 { 5004 unallocated = PAGE_SIZE / sizeof (tag_t); 5005 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page (); 5006 alloc_counts[(int) alloc_type_tag].total_pages++; 5007 } 5008 5009 ptr = &cur_page->tag[--unallocated]; 5010 alloc_counts[(int) alloc_type_tag].unallocated = unallocated; 5011 } 5012 5013#else 5014 5015 ptr = XNEW (tag_t); 5016 5017#endif 5018 5019 alloc_counts[(int) alloc_type_tag].total_alloc++; 5020 *ptr = initial_tag; 5021 return ptr; 5022} 5023 5024/* Free scoping information. */ 5025 5026static void 5027free_tag (tag_t *ptr) 5028{ 5029 alloc_counts[(int) alloc_type_tag].total_free++; 5030 5031#ifndef MALLOC_CHECK 5032 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag; 5033 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr; 5034#else 5035 free ((PTR_T) ptr); 5036#endif 5037} 5038 5039/* Allocate forward reference to a yet unknown tag. */ 5040 5041static forward_t * 5042allocate_forward (void) 5043{ 5044 forward_t *ptr; 5045 static forward_t initial_forward; 5046 5047#ifndef MALLOC_CHECK 5048 5049 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated; 5050 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page; 5051 5052 if (unallocated == 0) 5053 { 5054 unallocated = PAGE_SIZE / sizeof (forward_t); 5055 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page (); 5056 alloc_counts[(int) alloc_type_forward].total_pages++; 5057 } 5058 5059 ptr = &cur_page->forward[--unallocated]; 5060 alloc_counts[(int) alloc_type_forward].unallocated = unallocated; 5061 5062#else 5063 5064 ptr = XNEW (forward_t); 5065 5066#endif 5067 5068 alloc_counts[(int) alloc_type_forward].total_alloc++; 5069 *ptr = initial_forward; 5070 return ptr; 5071} 5072 5073/* Allocate head of type hash list. */ 5074 5075static thead_t * 5076allocate_thead (void) 5077{ 5078 thead_t *ptr; 5079 static thead_t initial_thead; 5080 5081#ifndef MALLOC_CHECK 5082 5083 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5084 if (ptr != (thead_t *) NULL) 5085 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free; 5086 else 5087 { 5088 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated; 5089 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page; 5090 5091 if (unallocated == 0) 5092 { 5093 unallocated = PAGE_SIZE / sizeof (thead_t); 5094 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page (); 5095 alloc_counts[(int) alloc_type_thead].total_pages++; 5096 } 5097 5098 ptr = &cur_page->thead[--unallocated]; 5099 alloc_counts[(int) alloc_type_thead].unallocated = unallocated; 5100 } 5101 5102#else 5103 5104 ptr = XNEW (thead_t); 5105 5106#endif 5107 5108 alloc_counts[(int) alloc_type_thead].total_alloc++; 5109 *ptr = initial_thead; 5110 return ptr; 5111} 5112 5113/* Free scoping information. */ 5114 5115static void 5116free_thead (thead_t *ptr) 5117{ 5118 alloc_counts[(int) alloc_type_thead].total_free++; 5119 5120#ifndef MALLOC_CHECK 5121 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead; 5122 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr; 5123#else 5124 free ((PTR_T) ptr); 5125#endif 5126} 5127 5128static lineno_list_t * 5129allocate_lineno_list (void) 5130{ 5131 lineno_list_t *ptr; 5132 static lineno_list_t initial_lineno_list; 5133 5134#ifndef MALLOC_CHECK 5135 5136 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated; 5137 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page; 5138 5139 if (unallocated == 0) 5140 { 5141 unallocated = PAGE_SIZE / sizeof (lineno_list_t); 5142 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page (); 5143 alloc_counts[(int) alloc_type_lineno].total_pages++; 5144 } 5145 5146 ptr = &cur_page->lineno[--unallocated]; 5147 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated; 5148 5149#else 5150 5151 ptr = XNEW (lineno_list_t); 5152 5153#endif 5154 5155 alloc_counts[(int) alloc_type_lineno].total_alloc++; 5156 *ptr = initial_lineno_list; 5157 return ptr; 5158} 5159 5160void 5161ecoff_set_gp_prolog_size (int sz) 5162{ 5163 if (cur_proc_ptr == 0) 5164 return; 5165 5166 cur_proc_ptr->pdr.gp_prologue = sz; 5167 if (cur_proc_ptr->pdr.gp_prologue != sz) 5168 { 5169 as_warn (_("GP prologue size exceeds field size, using 0 instead")); 5170 cur_proc_ptr->pdr.gp_prologue = 0; 5171 } 5172 5173 cur_proc_ptr->pdr.gp_used = 1; 5174} 5175 5176int 5177ecoff_no_current_file (void) 5178{ 5179 return cur_file_ptr == (efdr_t *) NULL; 5180} 5181 5182void 5183ecoff_generate_asm_lineno (void) 5184{ 5185 unsigned int lineno; 5186 const char *filename; 5187 lineno_list_t *list; 5188 5189 filename = as_where (&lineno); 5190 5191 if (current_stabs_filename == (char *) NULL 5192 || filename_cmp (current_stabs_filename, filename)) 5193 add_file (filename, 0, 1); 5194 5195 list = allocate_lineno_list (); 5196 5197 list->next = (lineno_list_t *) NULL; 5198 list->file = cur_file_ptr; 5199 list->proc = cur_proc_ptr; 5200 list->frag = frag_now; 5201 list->paddr = frag_now_fix (); 5202 list->lineno = lineno; 5203 5204 /* We don't want to merge files which have line numbers. */ 5205 cur_file_ptr->fdr.fMerge = 0; 5206 5207 /* A .loc directive will sometimes appear before a .ent directive, 5208 which means that cur_proc_ptr will be NULL here. Arrange to 5209 patch this up. */ 5210 if (cur_proc_ptr == (proc_t *) NULL) 5211 { 5212 lineno_list_t **pl; 5213 5214 pl = &noproc_lineno; 5215 while (*pl != (lineno_list_t *) NULL) 5216 pl = &(*pl)->next; 5217 *pl = list; 5218 } 5219 else 5220 { 5221 last_lineno = list; 5222 *last_lineno_ptr = list; 5223 last_lineno_ptr = &list->next; 5224 } 5225} 5226 5227#else 5228 5229void 5230ecoff_generate_asm_lineno (void) 5231{ 5232} 5233 5234#endif /* ECOFF_DEBUGGING */ 5235