1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- A L I -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2015, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNAT; see file COPYING3. If not, go to -- 19-- http://www.gnu.org/licenses for a complete copy of the license. -- 20-- -- 21-- GNAT was originally developed by the GNAT team at New York University. -- 22-- Extensive contributions were provided by Ada Core Technologies Inc. -- 23-- -- 24------------------------------------------------------------------------------ 25 26-- This package defines the internal data structures used for representation 27-- of Ada Library Information (ALI) acquired from the ALI files generated by 28-- the front end. 29 30with Casing; use Casing; 31with Gnatvsn; use Gnatvsn; 32with Namet; use Namet; 33with Rident; use Rident; 34with Table; 35with Types; use Types; 36 37with GNAT.HTable; use GNAT.HTable; 38 39package ALI is 40 41 -------------- 42 -- Id Types -- 43 -------------- 44 45 -- The various entries are stored in tables with distinct subscript ranges. 46 -- The following type definitions show the ranges used for the subscripts 47 -- (Id values) for the various tables. 48 49 type ALI_Id is range 0 .. 999_999; 50 -- Id values used for ALIs table entries 51 52 type Unit_Id is range 1_000_000 .. 1_999_999; 53 -- Id values used for Unit table entries 54 55 type With_Id is range 2_000_000 .. 2_999_999; 56 -- Id values used for Withs table entries 57 58 type Arg_Id is range 3_000_000 .. 3_999_999; 59 -- Id values used for argument table entries 60 61 type Sdep_Id is range 4_000_000 .. 4_999_999; 62 -- Id values used for Sdep table entries 63 64 type Source_Id is range 5_000_000 .. 5_999_999; 65 -- Id values used for Source table entries 66 67 type Interrupt_State_Id is range 6_000_000 .. 6_999_999; 68 -- Id values used for Interrupt_State table entries 69 70 type Priority_Specific_Dispatching_Id is range 7_000_000 .. 7_999_999; 71 -- Id values used for Priority_Specific_Dispatching table entries 72 73 -------------------- 74 -- ALI File Table -- 75 -------------------- 76 77 -- Each ALI file read generates an entry in the ALIs table 78 79 No_ALI_Id : constant ALI_Id := ALI_Id'First; 80 -- Special value indicating no ALI entry 81 82 First_ALI_Entry : constant ALI_Id := No_ALI_Id + 1; 83 -- Id of first actual entry in table 84 85 type Main_Program_Type is (None, Proc, Func); 86 -- Indicator of whether unit can be used as main program 87 88 type ALIs_Record is record 89 90 Afile : File_Name_Type; 91 -- Name of ALI file 92 93 Ofile_Full_Name : File_Name_Type; 94 -- Full name of object file corresponding to the ALI file 95 96 Sfile : File_Name_Type; 97 -- Name of source file that generates this ALI file (which is equal 98 -- to the name of the source file in the first unit table entry for 99 -- this ALI file, since the body if present is always first). 100 101 Ver : String (1 .. Ver_Len_Max); 102 -- Value of library version (V line in ALI file). Not set if 103 -- V lines are ignored as a result of the Ignore_Lines parameter. 104 105 Ver_Len : Natural; 106 -- Length of characters stored in Ver. Not set if V lines are ignored as 107 -- a result of the Ignore_Lines parameter. 108 109 SAL_Interface : Boolean; 110 -- Set True when this is an interface to a standalone library 111 112 First_Unit : Unit_Id; 113 -- Id of first Unit table entry for this file 114 115 Last_Unit : Unit_Id; 116 -- Id of last Unit table entry for this file 117 118 First_Sdep : Sdep_Id; 119 -- Id of first Sdep table entry for this file 120 121 Last_Sdep : Sdep_Id; 122 -- Id of last Sdep table entry for this file 123 124 Main_Program : Main_Program_Type; 125 -- Indicator of whether first unit can be used as main program. Not set 126 -- if 'M' appears in Ignore_Lines. 127 128 Main_Priority : Int; 129 -- Indicates priority value if Main_Program field indicates that this 130 -- can be a main program. A value of -1 (No_Main_Priority) indicates 131 -- that no parameter was found, or no M line was present. Not set if 132 -- 'M' appears in Ignore_Lines. 133 134 Main_CPU : Int; 135 -- Indicates processor if Main_Program field indicates that this can 136 -- be a main program. A value of -1 (No_Main_CPU) indicates that no C 137 -- parameter was found, or no M line was present. Not set if 'M' appears 138 -- in Ignore_Lines. 139 140 Time_Slice_Value : Int; 141 -- Indicates value of time slice parameter from T=xxx on main program 142 -- line. A value of -1 indicates that no T=xxx parameter was found, or 143 -- no M line was present. Not set if 'M' appears in Ignore_Lines. 144 145 WC_Encoding : Character; 146 -- Wide character encoding if main procedure. Otherwise not relevant. 147 -- Not set if 'M' appears in Ignore_Lines. 148 149 Locking_Policy : Character; 150 -- Indicates locking policy for units in this file. Space means tasking 151 -- was not used, or that no Locking_Policy pragma was present or that 152 -- this is a language defined unit. Otherwise set to first character 153 -- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines. 154 155 Partition_Elaboration_Policy : Character; 156 -- Indicates partition elaboration policy for units in this file. Space 157 -- means that no Partition_Elaboration_Policy pragma was present or that 158 -- this is a language defined unit. Otherwise set to first character 159 -- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines. 160 161 Queuing_Policy : Character; 162 -- Indicates queuing policy for units in this file. Space means tasking 163 -- was not used, or that no Queuing_Policy pragma was present or that 164 -- this is a language defined unit. Otherwise set to first character 165 -- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines. 166 167 Task_Dispatching_Policy : Character; 168 -- Indicates task dispatching policy for units in this file. Space means 169 -- tasking was not used, or that no Task_Dispatching_Policy pragma was 170 -- present or that this is a language defined unit. Otherwise set to 171 -- first character (upper case) of policy name. Not set if 'P' appears 172 -- in Ignore_Lines. 173 174 Compile_Errors : Boolean; 175 -- Set to True if compile errors for unit. Note that No_Object will 176 -- always be set as well in this case. Not set if 'P' appears in 177 -- Ignore_Lines. 178 179 GNATprove_Mode : Boolean; 180 -- Set to True if ALI and object file produced in GNATprove_Mode as 181 -- signalled by GP appearing on the P line. Not set if 'P' appears in 182 -- Ignore_Lines. 183 184 No_Object : Boolean; 185 -- Set to True if no object file generated. Not set if 'P' appears in 186 -- Ignore_Lines. 187 188 Normalize_Scalars : Boolean; 189 -- Set to True if file was compiled with Normalize_Scalars. Not set if 190 -- 'P' appears in Ignore_Lines. 191 192 SSO_Default : Character; 193 -- Set to 'H' or 'L' if file was compiled with a configuration pragma 194 -- file containing Default_Scalar_Storage_Order (High/Low_Order_First). 195 -- Set to ' ' if neither pragma was present. Not set if 'P' appears in 196 -- Ignore_Lines. 197 198 Unit_Exception_Table : Boolean; 199 -- Set to True if unit exception table pointer generated. Not set if 'P' 200 -- appears in Ignore_Lines. 201 202 Zero_Cost_Exceptions : Boolean; 203 -- Set to True if file was compiled with zero cost exceptions. Not set 204 -- if 'P' appears in Ignore_Lines. 205 206 Restrictions : Restrictions_Info; 207 -- Restrictions information reconstructed from R lines 208 209 First_Interrupt_State : Interrupt_State_Id; 210 Last_Interrupt_State : Interrupt_State_Id'Base; 211 -- These point to the first and last entries in the interrupt state 212 -- table for this unit. If no entries, then Last_Interrupt_State = 213 -- First_Interrupt_State - 1 (that's why the 'Base reference is there, 214 -- it can be one less than the lower bound of the subtype). Not set if 215 -- 'I' appears in Ignore_Lines 216 217 First_Specific_Dispatching : Priority_Specific_Dispatching_Id; 218 Last_Specific_Dispatching : Priority_Specific_Dispatching_Id'Base; 219 -- These point to the first and last entries in the priority specific 220 -- dispatching table for this unit. If there are no entries, then 221 -- Last_Specific_Dispatching = First_Specific_Dispatching - 1. That 222 -- is why the 'Base reference is there, it can be one less than the 223 -- lower bound of the subtype. Not set if 'S' appears in Ignore_Lines. 224 225 end record; 226 227 No_Main_Priority : constant Int := -1; 228 -- Code for no main priority set 229 230 No_Main_CPU : constant Int := -1; 231 -- Code for no main cpu set 232 233 package ALIs is new Table.Table ( 234 Table_Component_Type => ALIs_Record, 235 Table_Index_Type => ALI_Id, 236 Table_Low_Bound => First_ALI_Entry, 237 Table_Initial => 500, 238 Table_Increment => 200, 239 Table_Name => "ALIs"); 240 241 ---------------- 242 -- Unit Table -- 243 ---------------- 244 245 -- Each unit within an ALI file generates an entry in the unit table 246 247 No_Unit_Id : constant Unit_Id := Unit_Id'First; 248 -- Special value indicating no unit table entry 249 250 First_Unit_Entry : constant Unit_Id := No_Unit_Id + 1; 251 -- Id of first actual entry in table 252 253 type Unit_Type is (Is_Spec, Is_Body, Is_Spec_Only, Is_Body_Only); 254 -- Indicates type of entry, if both body and spec appear in the ALI file, 255 -- then the first unit is marked Is_Body, and the second is marked Is_Spec. 256 -- If only a spec appears, then it is marked as Is_Spec_Only, and if only 257 -- a body appears, then it is marked Is_Body_Only). 258 259 subtype Version_String is String (1 .. 8); 260 -- Version string, taken from unit record 261 262 type Unit_Record is record 263 264 My_ALI : ALI_Id; 265 -- Corresponding ALI entry 266 267 Uname : Unit_Name_Type; 268 -- Name of Unit 269 270 Sfile : File_Name_Type; 271 -- Name of source file 272 273 Preelab : Boolean; 274 -- Indicates presence of PR parameter for a preelaborated package 275 276 No_Elab : Boolean; 277 -- Indicates presence of NE parameter for a unit that has does not 278 -- have an elaboration routine (since it has no elaboration code). 279 280 Pure : Boolean; 281 -- Indicates presence of PU parameter for a package having pragma Pure 282 283 Dynamic_Elab : Boolean; 284 -- Set to True if the unit was compiled with dynamic elaboration checks 285 -- (i.e. either -gnatE or pragma Elaboration_Checks (RM) was used to 286 -- compile the unit). 287 288 Elaborate_Body : Boolean; 289 -- Indicates presence of EB parameter for a package which has a pragma 290 -- Elaborate_Body, and also for generic package instantiations. 291 292 Set_Elab_Entity : Boolean; 293 -- Indicates presence of EE parameter for a unit which has an 294 -- elaboration entity which must be set true as part of the 295 -- elaboration of the unit. 296 297 Has_RACW : Boolean; 298 -- Indicates presence of RA parameter for a package that declares at 299 -- least one Remote Access to Class_Wide (RACW) object. 300 301 Remote_Types : Boolean; 302 -- Indicates presence of RT parameter for a package which has a 303 -- pragma Remote_Types. 304 305 Serious_Errors : Boolean; 306 -- Indicates presence of SE parameter indicating that compilation of 307 -- the unit encountered as serious error. 308 309 Shared_Passive : Boolean; 310 -- Indicates presence of SP parameter for a package which has a pragma 311 -- Shared_Passive. 312 313 RCI : Boolean; 314 -- Indicates presence of RC parameter for a package which has a pragma 315 -- Remote_Call_Interface. 316 317 Predefined : Boolean; 318 -- Indicates if unit is language predefined (or a child of such a unit) 319 320 Internal : Boolean; 321 -- Indicates if unit is an internal unit (or a child of such a unit) 322 323 First_With : With_Id; 324 -- Id of first withs table entry for this file 325 326 Last_With : With_Id; 327 -- Id of last withs table entry for this file 328 329 First_Arg : Arg_Id; 330 -- Id of first args table entry for this file 331 332 Last_Arg : Arg_Id; 333 -- Id of last args table entry for this file 334 335 Utype : Unit_Type; 336 -- Type of entry 337 338 Is_Generic : Boolean; 339 -- True for generic unit (i.e. a generic declaration, or a generic 340 -- body). False for a non-generic unit. 341 342 Unit_Kind : Character; 343 -- Indicates the nature of the unit. 'p' for Packages and 's' for 344 -- subprograms. 345 346 Version : Version_String; 347 -- Version of unit 348 349 Icasing : Casing_Type; 350 -- Indicates casing of identifiers in source file for this unit. This 351 -- is used for informational output, and also for constructing the main 352 -- unit if it is being built in Ada. 353 354 Kcasing : Casing_Type; 355 -- Indicates casing of keywords in source file for this unit. This is 356 -- used for informational output, and also for constructing the main 357 -- unit if it is being built in Ada. 358 359 Elab_Position : aliased Natural; 360 -- Initialized to zero. Set non-zero when a unit is chosen and 361 -- placed in the elaboration order. The value represents the 362 -- ordinal position in the elaboration order. 363 364 Init_Scalars : Boolean; 365 -- Set True if IS qualifier appears in ALI file, indicating that 366 -- an Initialize_Scalars pragma applies to the unit. 367 368 SAL_Interface : Boolean; 369 -- Set True when this is an interface to a standalone library 370 371 Directly_Scanned : Boolean; 372 -- True iff it is a unit from an ALI file specified to gnatbind 373 374 Body_Needed_For_SAL : Boolean; 375 -- Indicates that the source for the body of the unit (subprogram, 376 -- package, or generic unit) must be included in a standalone library. 377 378 Elaborate_Body_Desirable : Boolean; 379 -- Indicates that the front end elaboration circuitry decided that it 380 -- would be a good idea if this package had Elaborate_Body. The binder 381 -- will attempt, but does not promise, to place the elaboration call 382 -- for the body right after the call for the spec, or at least as close 383 -- together as possible. 384 385 Optimize_Alignment : Character; 386 -- Optimize_Alignment setting. Set to L/S/T/O for OL/OS/OT/OO present 387 388 Has_Finalizer : Boolean; 389 -- Indicates whether a package body or a spec has a library-level 390 -- finalization routine. 391 end record; 392 393 package Units is new Table.Table ( 394 Table_Component_Type => Unit_Record, 395 Table_Index_Type => Unit_Id, 396 Table_Low_Bound => First_Unit_Entry, 397 Table_Initial => 100, 398 Table_Increment => 200, 399 Table_Name => "Unit"); 400 401 --------------------------- 402 -- Interrupt State Table -- 403 --------------------------- 404 405 -- An entry is made in this table for each I (interrupt state) line 406 -- encountered in the input ALI file. The First/Last_Interrupt_Id 407 -- fields of the ALI file entry show the range of entries defined 408 -- within a particular ALI file. 409 410 type Interrupt_State_Record is record 411 Interrupt_Id : Nat; 412 -- Id from interrupt state entry 413 414 Interrupt_State : Character; 415 -- State from interrupt state entry ('u'/'r'/'s') 416 417 IS_Pragma_Line : Nat; 418 -- Line number of Interrupt_State pragma 419 end record; 420 421 package Interrupt_States is new Table.Table ( 422 Table_Component_Type => Interrupt_State_Record, 423 Table_Index_Type => Interrupt_State_Id'Base, 424 Table_Low_Bound => Interrupt_State_Id'First, 425 Table_Initial => 100, 426 Table_Increment => 200, 427 Table_Name => "Interrupt_States"); 428 429 ----------------------------------------- 430 -- Priority Specific Dispatching Table -- 431 ----------------------------------------- 432 433 -- An entry is made in this table for each S (priority specific 434 -- dispatching) line encountered in the input ALI file. The 435 -- First/Last_Specific_Dispatching_Id fields of the ALI file 436 -- entry show the range of entries defined within a particular 437 -- ALI file. 438 439 type Specific_Dispatching_Record is record 440 Dispatching_Policy : Character; 441 -- First character (upper case) of the corresponding policy name 442 443 First_Priority : Nat; 444 -- Lower bound of the priority range to which the specified dispatching 445 -- policy applies. 446 447 Last_Priority : Nat; 448 -- Upper bound of the priority range to which the specified dispatching 449 -- policy applies. 450 451 PSD_Pragma_Line : Nat; 452 -- Line number of Priority_Specific_Dispatching pragma 453 end record; 454 455 package Specific_Dispatching is new Table.Table ( 456 Table_Component_Type => Specific_Dispatching_Record, 457 Table_Index_Type => Priority_Specific_Dispatching_Id'Base, 458 Table_Low_Bound => Priority_Specific_Dispatching_Id'First, 459 Table_Initial => 100, 460 Table_Increment => 200, 461 Table_Name => "Priority_Specific_Dispatching"); 462 463 -------------- 464 -- Switches -- 465 -------------- 466 467 -- These switches record status information about ali files that 468 -- have been read, for quick reference without searching tables. 469 470 -- Note: a switch will be left set at its default value if the line 471 -- which might otherwise set it is ignored (from Ignore_Lines). 472 473 Dynamic_Elaboration_Checks_Specified : Boolean := False; 474 -- Set to False by Initialize_ALI. Set to True if Scan_ALI reads 475 -- a unit for which dynamic elaboration checking is enabled. 476 477 GNATprove_Mode_Specified : Boolean := False; 478 -- Set to True if an ali file was produced in GNATprove mode. 479 480 Initialize_Scalars_Used : Boolean := False; 481 -- Set True if an ali file contains the Initialize_Scalars flag 482 483 Locking_Policy_Specified : Character := ' '; 484 -- Set to blank by Initialize_ALI. Set to the appropriate locking policy 485 -- character if an ali file contains a P line setting the locking policy. 486 487 No_Normalize_Scalars_Specified : Boolean := False; 488 -- Set to False by Initialize_ALI. Set to True if an ali file indicates 489 -- that the file was compiled without normalize scalars. 490 491 No_Object_Specified : Boolean := False; 492 -- Set to False by Initialize_ALI. Set to True if an ali file contains 493 -- the No_Object flag. 494 495 Normalize_Scalars_Specified : Boolean := False; 496 -- Set to False by Initialize_ALI. Set to True if an ali file indicates 497 -- that the file was compiled in Normalize_Scalars mode. 498 499 Partition_Elaboration_Policy_Specified : Character := ' '; 500 -- Set to blank by Initialize_ALI. Set to the appropriate partition 501 -- elaboration policy character if an ali file contains a P line setting 502 -- the policy. 503 504 Queuing_Policy_Specified : Character := ' '; 505 -- Set to blank by Initialize_ALI. Set to the appropriate queuing policy 506 -- character if an ali file contains a P line setting the queuing policy. 507 508 Cumulative_Restrictions : Restrictions_Info := No_Restrictions; 509 -- This variable records the cumulative contributions of R lines in all 510 -- ali files, showing whether a restriction pragma exists anywhere, and 511 -- accumulating the aggregate knowledge of violations. 512 513 SSO_Default_Specified : Boolean := False; 514 -- Set to True if at least one ALI file contains an OH/OL flag indicating 515 -- that it was compiled with a configuration pragmas file containing the 516 -- pragma Default_Scalar_Storage_Order (OH/OL present in ALI file P line). 517 518 Stack_Check_Switch_Set : Boolean := False; 519 -- Set to True if at least one ALI file contains '-fstack-check' in its 520 -- argument list. 521 522 Static_Elaboration_Model_Used : Boolean := False; 523 -- Set to False by Initialize_ALI. Set to True if any ALI file for a 524 -- non-internal unit compiled with the static elaboration model is 525 -- encountered. 526 527 Task_Dispatching_Policy_Specified : Character := ' '; 528 -- Set to blank by Initialize_ALI. Set to the appropriate task dispatching 529 -- policy character if an ali file contains a P line setting the 530 -- task dispatching policy. 531 532 Unreserve_All_Interrupts_Specified : Boolean := False; 533 -- Set to False by Initialize_ALI. Set to True if an ali file is read that 534 -- has P line specifying unreserve all interrupts mode. 535 536 Zero_Cost_Exceptions_Specified : Boolean := False; 537 -- Set to False by Initialize_ALI. Set to True if an ali file is read that 538 -- has a P line specifying the generation of zero cost exceptions. 539 540 ----------------- 541 -- Withs Table -- 542 ----------------- 543 544 -- Each With line (W line) in an ALI file generates a Withs table entry 545 546 -- Note: there will be no entries in this table if 'W' lines are ignored 547 548 No_With_Id : constant With_Id := With_Id'First; 549 -- Special value indicating no withs table entry 550 551 First_With_Entry : constant With_Id := No_With_Id + 1; 552 -- Id of first actual entry in table 553 554 type With_Record is record 555 556 Uname : Unit_Name_Type; 557 -- Name of Unit 558 559 Sfile : File_Name_Type; 560 -- Name of source file, set to No_File in generic case 561 562 Afile : File_Name_Type; 563 -- Name of ALI file, set to No_File in generic case 564 565 Elaborate : Boolean; 566 -- Indicates presence of E parameter 567 568 Elaborate_All : Boolean; 569 -- Indicates presence of EA parameter 570 571 Elab_All_Desirable : Boolean; 572 -- Indicates presence of AD parameter 573 574 Elab_Desirable : Boolean; 575 -- Indicates presence of ED parameter 576 577 SAL_Interface : Boolean := False; 578 -- True if the Unit is an Interface of a Stand-Alone Library 579 580 Limited_With : Boolean := False; 581 -- True if unit is named in a limited_with_clause 582 583 Implicit_With_From_Instantiation : Boolean := False; 584 -- True if this is an implicit with from a generic instantiation 585 end record; 586 587 package Withs is new Table.Table ( 588 Table_Component_Type => With_Record, 589 Table_Index_Type => With_Id, 590 Table_Low_Bound => First_With_Entry, 591 Table_Initial => 5000, 592 Table_Increment => 200, 593 Table_Name => "Withs"); 594 595 --------------------- 596 -- Arguments Table -- 597 --------------------- 598 599 -- Each Arg line (A line) in an ALI file generates an Args table entry 600 601 -- Note: there will be no entries in this table if 'A' lines are ignored 602 603 No_Arg_Id : constant Arg_Id := Arg_Id'First; 604 -- Special value indicating no args table entry 605 606 First_Arg_Entry : constant Arg_Id := No_Arg_Id + 1; 607 -- Id of first actual entry in table 608 609 package Args is new Table.Table ( 610 Table_Component_Type => String_Ptr, 611 Table_Index_Type => Arg_Id, 612 Table_Low_Bound => First_Arg_Entry, 613 Table_Initial => 1000, 614 Table_Increment => 100, 615 Table_Name => "Args"); 616 617 -------------------------- 618 -- Linker_Options Table -- 619 -------------------------- 620 621 -- If an ALI file has one of more Linker_Options lines, then a single 622 -- entry is made in this table. If more than one Linker_Options lines 623 -- appears in a given ALI file, then the arguments are concatenated 624 -- to form the entry in this table, using a NUL character as the 625 -- separator, and a final NUL character is appended to the end. 626 627 -- Note: there will be no entries in this table if 'L' lines are ignored 628 629 type Linker_Option_Record is record 630 Name : Name_Id; 631 -- Name entry containing concatenated list of Linker_Options 632 -- arguments separated by NUL and ended by NUL as described above. 633 634 Unit : Unit_Id; 635 -- Unit_Id for the entry 636 637 Internal_File : Boolean; 638 -- Set True if the linker options are from an internal file. This is 639 -- used to insert certain standard entries after all the user entries 640 -- but before the entries from the run-time. 641 642 Original_Pos : Positive; 643 -- Keep track of original position in the linker options table. This 644 -- is used to implement a stable sort when we sort the linker options 645 -- table. 646 end record; 647 648 -- The indexes of active entries in this table range from 1 to the 649 -- value of Linker_Options.Last. The zero'th element is for sort call. 650 651 package Linker_Options is new Table.Table ( 652 Table_Component_Type => Linker_Option_Record, 653 Table_Index_Type => Integer, 654 Table_Low_Bound => 0, 655 Table_Initial => 200, 656 Table_Increment => 400, 657 Table_Name => "Linker_Options"); 658 659 ----------------- 660 -- Notes Table -- 661 ----------------- 662 663 -- The notes table records entries from N lines 664 665 type Notes_Record is record 666 Pragma_Type : Character; 667 -- 'A', 'C', 'I', 'S', 'T' for Annotate/Comment/Ident/Subtitle/Title 668 669 Pragma_Line : Nat; 670 -- Line number of pragma 671 672 Pragma_Col : Nat; 673 -- Column number of pragma 674 675 Pragma_Source_File : File_Name_Type; 676 -- Source file of pragma 677 678 Pragma_Args : Name_Id; 679 -- Pragma arguments. No_Name if no arguments, otherwise a single 680 -- name table entry consisting of all the characters on the notes 681 -- line from the first non-blank character following the source 682 -- location to the last character on the line. 683 end record; 684 685 -- The indexes of active entries in this table range from 1 to the 686 -- value of Linker_Options.Last. The zero'th element is for convenience 687 -- if the table needs to be sorted. 688 689 package Notes is new Table.Table ( 690 Table_Component_Type => Notes_Record, 691 Table_Index_Type => Integer, 692 Table_Low_Bound => 0, 693 Table_Initial => 200, 694 Table_Increment => 400, 695 Table_Name => "Notes"); 696 697 ------------------------------------------- 698 -- External Version Reference Hash Table -- 699 ------------------------------------------- 700 701 -- This hash table keeps track of external version reference strings 702 -- as read from E lines in the ali file. The stored values do not 703 -- include the terminating quote characters. 704 705 -- Note: there will be no entries in this table if 'E' lines are ignored 706 707 type Vindex is range 0 .. 98; 708 -- Type to define range of headers 709 710 function SHash (S : String_Ptr) return Vindex; 711 -- Hash function for this table 712 713 function SEq (F1, F2 : String_Ptr) return Boolean; 714 -- Equality function for this table 715 716 package Version_Ref is new Simple_HTable ( 717 Header_Num => Vindex, 718 Element => Boolean, 719 No_Element => False, 720 Key => String_Ptr, 721 Hash => SHash, 722 Equal => SEq); 723 724 ------------------------- 725 -- No_Dependency Table -- 726 ------------------------- 727 728 -- Each R line for a No_Dependency Restriction generates an entry in 729 -- this No_Dependency table. 730 731 type No_Dep_Record is record 732 ALI_File : ALI_Id; 733 -- ALI File containing the entry 734 735 No_Dep_Unit : Name_Id; 736 -- Id for names table entry including entire name, including periods 737 end record; 738 739 package No_Deps is new Table.Table ( 740 Table_Component_Type => No_Dep_Record, 741 Table_Index_Type => Integer, 742 Table_Low_Bound => 0, 743 Table_Initial => 200, 744 Table_Increment => 400, 745 Table_Name => "No_Deps"); 746 747 ------------------------------------ 748 -- Sdep (Source Dependency) Table -- 749 ------------------------------------ 750 751 -- Each source dependency (D line) in an ALI file generates an entry in the 752 -- Sdep table. 753 754 -- Note: there will be no entries in this table if 'D' lines are ignored 755 756 No_Sdep_Id : constant Sdep_Id := Sdep_Id'First; 757 -- Special value indicating no Sdep table entry 758 759 First_Sdep_Entry : Sdep_Id := No_Sdep_Id + 1; 760 -- Id of first Sdep entry for current ali file. This is initialized to the 761 -- first Sdep entry in the table, and then incremented appropriately as 762 -- successive ALI files are scanned. 763 764 type Sdep_Record is record 765 766 Sfile : File_Name_Type; 767 -- Name of source file 768 769 Stamp : Time_Stamp_Type; 770 -- Time stamp value. Note that this will be all zero characters for the 771 -- dummy entries for missing or non-dependent files. 772 773 Checksum : Word; 774 -- Checksum value. Note that this will be all zero characters for the 775 -- dummy entries for missing or non-dependent files 776 777 Dummy_Entry : Boolean; 778 -- Set True for dummy entries that correspond to missing files or files 779 -- where no dependency relationship exists. 780 781 Subunit_Name : Name_Id; 782 -- Name_Id for subunit name if present, else No_Name 783 784 Unit_Name : Name_Id; 785 -- Name_Id for the unit name if not a subunit (No_Name for a subunit) 786 Rfile : File_Name_Type; 787 -- Reference file name. Same as Sfile unless a Source_Reference pragma 788 -- was used, in which case it reflects the name used in the pragma. 789 790 Start_Line : Nat; 791 -- Starting line number in file. Always 1, unless a Source_Reference 792 -- pragma was used, in which case it reflects the line number value 793 -- given in the pragma. 794 795 end record; 796 797 package Sdep is new Table.Table ( 798 Table_Component_Type => Sdep_Record, 799 Table_Index_Type => Sdep_Id, 800 Table_Low_Bound => First_Sdep_Entry, 801 Table_Initial => 5000, 802 Table_Increment => 200, 803 Table_Name => "Sdep"); 804 805 ---------------------------- 806 -- Use of Name Table Info -- 807 ---------------------------- 808 809 -- All unit names and file names are entered into the Names table. The Info 810 -- fields of these entries are used as follows: 811 812 -- Unit name Info field has Unit_Id of unit table entry 813 -- ALI file name Info field has ALI_Id of ALI table entry 814 -- Source file name Info field has Source_Id of source table entry 815 816 -------------------------- 817 -- Cross-Reference Data -- 818 -------------------------- 819 820 -- The following table records cross-reference sections, there is one entry 821 -- for each X header line in the ALI file for an xref section. 822 823 -- Note: there will be no entries in this table if 'X' lines are ignored 824 825 type Xref_Section_Record is record 826 File_Num : Sdep_Id; 827 -- Dependency number for file (entry in Sdep.Table) 828 829 File_Name : File_Name_Type; 830 -- Name of file 831 832 First_Entity : Nat; 833 -- First entry in Xref_Entity table 834 835 Last_Entity : Nat; 836 -- Last entry in Xref_Entity table 837 end record; 838 839 package Xref_Section is new Table.Table ( 840 Table_Component_Type => Xref_Section_Record, 841 Table_Index_Type => Nat, 842 Table_Low_Bound => 1, 843 Table_Initial => 50, 844 Table_Increment => 300, 845 Table_Name => "Xref_Section"); 846 847 -- The following is used to indicate whether a typeref field is present 848 -- for the entity, and if so what kind of typeref field. 849 850 type Tref_Kind is ( 851 Tref_None, -- No typeref present 852 Tref_Access, -- Access type typeref (points to designated type) 853 Tref_Derived, -- Derived type typeref (points to parent type) 854 Tref_Type); -- All other cases 855 856 type Visibility_Kind is 857 (Global, -- Library level entity 858 Static, -- Static C/C++ entity 859 Other); -- Local and other entity 860 861 -- The following table records entities for which xrefs are recorded 862 863 type Xref_Entity_Record is record 864 Line : Pos; 865 -- Line number of definition 866 867 Etype : Character; 868 -- Set to the identification character for the entity. See section 869 -- "Cross-Reference Entity Identifiers" in lib-xref.ads for details. 870 871 Col : Pos; 872 -- Column number of definition 873 874 Visibility : Visibility_Kind; 875 -- Visibility of entity 876 877 Entity : Name_Id; 878 -- Name of entity 879 880 Iref_File_Num : Sdep_Id; 881 -- This field is set to the dependency reference for the file containing 882 -- the generic entity that this one instantiates, or to No_Sdep_Id if 883 -- the current entity is not an instantiation 884 885 Iref_Line : Nat; 886 -- This field is set to the line number in Iref_File_Num of the generic 887 -- entity that this one instantiates, or to zero if the current entity 888 -- is not an instantiation. 889 890 Rref_Line : Nat; 891 -- This field is set to the line number of a renaming reference if 892 -- one is present, or to zero if no renaming reference is present 893 894 Rref_Col : Nat; 895 -- This field is set to the column number of a renaming reference 896 -- if one is present, or to zero if no renaming reference is present. 897 898 Tref : Tref_Kind; 899 -- Indicates if a typeref is present, and if so what kind. Set to 900 -- Tref_None if no typeref field is present. 901 902 Tref_File_Num : Sdep_Id; 903 -- This field is set to No_Sdep_Id if no typeref is present, or 904 -- if the typeref refers to an entity in standard. Otherwise it 905 -- it is the dependency reference for the file containing the 906 -- declaration of the typeref entity. 907 908 Tref_Line : Nat; 909 -- This field is set to zero if no typeref is present, or if the 910 -- typeref refers to an entity in standard. Otherwise it contains 911 -- the line number of the declaration of the typeref entity. 912 913 Tref_Type : Character; 914 -- This field is set to blank if no typeref is present, or if the 915 -- typeref refers to an entity in standard. Otherwise it contains 916 -- the identification character for the typeref entity. See section 917 -- "Cross-Reference Entity Identifiers" in lib-xref.ads for details. 918 919 Tref_Col : Nat; 920 -- This field is set to zero if no typeref is present, or if the 921 -- typeref refers to an entity in standard. Otherwise it contains 922 -- the column number of the declaration of the parent type. 923 924 Tref_Standard_Entity : Name_Id; 925 -- This field is set to No_Name if no typeref is present or if the 926 -- typeref refers to a declared entity rather than an entity in 927 -- package Standard. If there is a typeref that references an 928 -- entity in package Standard, then this field is a Name_Id 929 -- reference for the entity name. 930 931 Oref_File_Num : Sdep_Id; 932 -- This field is set to No_Sdep_Id if the entity doesn't override any 933 -- other entity, or to the dependency reference for the overridden 934 -- entity. 935 936 Oref_Line : Nat; 937 Oref_Col : Nat; 938 -- These two fields are set to the line and column of the overridden 939 -- entity. 940 941 First_Xref : Nat; 942 -- Index into Xref table of first cross-reference 943 944 Last_Xref : Nat; 945 -- Index into Xref table of last cross-reference. The value in 946 -- Last_Xref can be less than the First_Xref value to indicate 947 -- that no entries are present in the Xref Table. 948 end record; 949 950 package Xref_Entity is new Table.Table ( 951 Table_Component_Type => Xref_Entity_Record, 952 Table_Index_Type => Nat, 953 Table_Low_Bound => 1, 954 Table_Initial => 500, 955 Table_Increment => 300, 956 Table_Name => "Xref_Entity"); 957 958 Array_Index_Reference : constant Character := '*'; 959 Interface_Reference : constant Character := 'I'; 960 -- Some special types of references. In the ALI file itself, these 961 -- are output as attributes of the entity, not as references, but 962 -- there is no provision in Xref_Entity_Record for storing multiple 963 -- such references. 964 965 -- The following table records actual cross-references 966 967 type Xref_Record is record 968 File_Num : Sdep_Id; 969 -- Set to the file dependency number for the cross-reference. Note 970 -- that if no file entry is present explicitly, this is just a copy 971 -- of the reference for the current cross-reference section. 972 973 Line : Nat; 974 -- Line number for the reference. This is zero when referencing a 975 -- predefined entity, but in this case Name is set. 976 977 Rtype : Character; 978 -- Indicates type of reference, using code used in ALI file: 979 -- r = reference 980 -- m = modification 981 -- b = body entity 982 -- c = completion of private or incomplete type 983 -- x = type extension 984 -- i = implicit reference 985 -- Array_Index_Reference = reference to the index of an array 986 -- Interface_Reference = reference to an interface implemented 987 -- by the type 988 -- See description in lib-xref.ads for further details 989 990 Col : Nat; 991 -- Column number for the reference 992 993 Name : Name_Id := No_Name; 994 -- This is only used when referencing a predefined entity. Currently, 995 -- this only occurs for array indexes. 996 997 -- Note: for instantiation references, Rtype is set to ' ', and Col is 998 -- set to zero. One or more such entries can follow any other reference. 999 -- When there is more than one such entry, this is to be read as: 1000 -- e.g. ref1 ref2 ref3 1001 -- ref1 is a reference to an entity that was instantied at ref2. 1002 -- ref2 itself is also the result of an instantiation, that took 1003 -- place at ref3 1004 1005 Imported_Lang : Name_Id := No_Name; 1006 Imported_Name : Name_Id := No_Name; 1007 -- Language and name of imported entity reference 1008 end record; 1009 1010 package Xref is new Table.Table ( 1011 Table_Component_Type => Xref_Record, 1012 Table_Index_Type => Nat, 1013 Table_Low_Bound => 1, 1014 Table_Initial => 2000, 1015 Table_Increment => 300, 1016 Table_Name => "Xref"); 1017 1018 -------------------------------------- 1019 -- Subprograms for Reading ALI File -- 1020 -------------------------------------- 1021 1022 procedure Initialize_ALI; 1023 -- Initialize the ALI tables. Also resets all switch values to defaults 1024 1025 function Scan_ALI 1026 (F : File_Name_Type; 1027 T : Text_Buffer_Ptr; 1028 Ignore_ED : Boolean; 1029 Err : Boolean; 1030 Read_Xref : Boolean := False; 1031 Read_Lines : String := ""; 1032 Ignore_Lines : String := "X"; 1033 Ignore_Errors : Boolean := False; 1034 Directly_Scanned : Boolean := False) return ALI_Id; 1035 -- Given the text, T, of an ALI file, F, scan and store the information 1036 -- from the file, and return the Id of the resulting entry in the ALI 1037 -- table. Switch settings may be modified as described above in the 1038 -- switch description settings. 1039 -- 1040 -- Ignore_ED is normally False. If set to True, it indicates that 1041 -- all AD/ED (elaboration desirable) indications in the ALI file are 1042 -- to be ignored. This parameter is obsolete now that the -f switch 1043 -- is removed from gnatbind, and should be removed ??? 1044 -- 1045 -- Err determines the action taken on an incorrectly formatted file. 1046 -- If Err is False, then an error message is output, and the program 1047 -- is terminated. If Err is True, then no error message is output, 1048 -- and No_ALI_Id is returned. 1049 -- 1050 -- Ignore_Lines requests that Scan_ALI ignore any lines that start 1051 -- with any given key character. The default value of X causes all 1052 -- Xref lines to be ignored. The corresponding data in the ALI 1053 -- tables will not be filled in this case. It is not possible 1054 -- to ignore U (unit) lines, they are always read. 1055 -- 1056 -- Read_Lines requests that Scan_ALI process only lines that start 1057 -- with one of the given characters. The corresponding data in the 1058 -- ALI file for any characters not given in the list will not be 1059 -- set. The default value of the null string indicates that all 1060 -- lines should be read (unless Ignore_Lines is specified). U 1061 -- (unit) lines are always read regardless of the value of this 1062 -- parameter. 1063 -- 1064 -- Note: either Ignore_Lines or Read_Lines should be non-null, but not 1065 -- both. If both are provided then only the Read_Lines value is used, 1066 -- and the Ignore_Lines parameter is ignored. 1067 -- 1068 -- Read_XREF is set True to read and acquire the cross-reference 1069 -- information. If Read_XREF is set to True, then the effect is to ignore 1070 -- all lines other than U, W, D and X lines and the Ignore_Lines and 1071 -- Read_Lines parameters are ignored (i.e. the use of True for Read_XREF 1072 -- is equivalent to specifying an argument of "UWDX" for Read_Lines. 1073 -- 1074 -- Ignore_Errors is normally False. If it is set True, then Scan_ALI 1075 -- will do its best to scan through a file and extract all information 1076 -- it can, even if there are errors. In this case Err is only set if 1077 -- Scan_ALI was completely unable to process the file (e.g. it did not 1078 -- look like an ALI file at all). Ignore_Errors is intended to improve 1079 -- the downward compatibility of new compilers with old tools. 1080 -- 1081 -- Directly_Scanned is normally False. If it is set to True, then the 1082 -- units (spec and/or body) corresponding to the ALI file are marked as 1083 -- such. It is used to decide for what units gnatbind should generate 1084 -- the symbols corresponding to 'Version or 'Body_Version in 1085 -- Stand-Alone Libraries. 1086 1087end ALI; 1088