1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- A L I -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2019, 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 type ALI_Id is range 0 .. 99_999_999; 46 -- Id values used for ALIs table entries 47 48 type Unit_Id is range 0 .. 99_999_999; 49 -- Id values used for Unit table entries 50 51 type With_Id is range 0 .. 99_999_999; 52 -- Id values used for Withs table entries 53 54 type Arg_Id is range 0 .. 99_999_999; 55 -- Id values used for argument table entries 56 57 type Sdep_Id is range 0 .. 99_999_999; 58 -- Id values used for Sdep table entries 59 60 type Source_Id is range 0 .. 99_999_999; 61 -- Id values used for Source table entries 62 63 type Interrupt_State_Id is range 0 .. 99_999_999; 64 -- Id values used for Interrupt_State table entries 65 66 type Priority_Specific_Dispatching_Id is range 0 .. 99_999_999; 67 -- Id values used for Priority_Specific_Dispatching table entries 68 69 -------------------- 70 -- ALI File Table -- 71 -------------------- 72 73 -- Each ALI file read generates an entry in the ALIs table 74 75 No_ALI_Id : constant ALI_Id := ALI_Id'First; 76 -- Special value indicating no ALI entry 77 78 First_ALI_Entry : constant ALI_Id := No_ALI_Id + 1; 79 -- Id of first actual entry in table 80 81 type Main_Program_Type is (None, Proc, Func); 82 -- Indicator of whether unit can be used as main program 83 84 type ALIs_Record is record 85 Afile : File_Name_Type; 86 -- Name of ALI file 87 88 Ofile_Full_Name : File_Name_Type; 89 -- Full name of object file corresponding to the ALI file 90 91 Sfile : File_Name_Type; 92 -- Name of source file that generates this ALI file (which is equal 93 -- to the name of the source file in the first unit table entry for 94 -- this ALI file, since the body if present is always first). 95 96 Ver : String (1 .. Ver_Len_Max); 97 -- Value of library version (V line in ALI file). Not set if 98 -- V lines are ignored as a result of the Ignore_Lines parameter. 99 100 Ver_Len : Natural; 101 -- Length of characters stored in Ver. Not set if V lines are ignored as 102 -- a result of the Ignore_Lines parameter. 103 104 SAL_Interface : Boolean; 105 -- Set True when this is an interface to a standalone library 106 107 First_Unit : Unit_Id; 108 -- Id of first Unit table entry for this file 109 110 Last_Unit : Unit_Id; 111 -- Id of last Unit table entry for this file 112 113 First_Sdep : Sdep_Id; 114 -- Id of first Sdep table entry for this file 115 116 Last_Sdep : Sdep_Id; 117 -- Id of last Sdep table entry for this file 118 119 Main_Program : Main_Program_Type; 120 -- Indicator of whether first unit can be used as main program. Not set 121 -- if 'M' appears in Ignore_Lines. 122 123 Main_Priority : Int; 124 -- Indicates priority value if Main_Program field indicates that this 125 -- can be a main program. A value of -1 (No_Main_Priority) indicates 126 -- that no parameter was found, or no M line was present. Not set if 127 -- 'M' appears in Ignore_Lines. 128 129 Main_CPU : Int; 130 -- Indicates processor if Main_Program field indicates that this can 131 -- be a main program. A value of -1 (No_Main_CPU) indicates that no C 132 -- parameter was found, or no M line was present. Not set if 'M' appears 133 -- in Ignore_Lines. 134 135 Time_Slice_Value : Int; 136 -- Indicates value of time slice parameter from T=xxx on main program 137 -- line. A value of -1 indicates that no T=xxx parameter was found, or 138 -- no M line was present. Not set if 'M' appears in Ignore_Lines. 139 140 WC_Encoding : Character; 141 -- Wide character encoding if main procedure. Otherwise not relevant. 142 -- Not set if 'M' appears in Ignore_Lines. 143 144 Locking_Policy : Character; 145 -- Indicates locking policy for units in this file. Space means tasking 146 -- was not used, or that no Locking_Policy pragma was present or that 147 -- this is a language defined unit. Otherwise set to first character 148 -- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines. 149 150 Partition_Elaboration_Policy : Character; 151 -- Indicates partition elaboration policy for units in this file. Space 152 -- means that no Partition_Elaboration_Policy pragma was present or that 153 -- this is a language defined unit. Otherwise set to first character 154 -- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines. 155 156 Queuing_Policy : Character; 157 -- Indicates queuing policy for units in this file. Space means tasking 158 -- was not used, or that no Queuing_Policy pragma was present or that 159 -- this is a language defined unit. Otherwise set to first character 160 -- (upper case) of policy name. Not set if 'P' appears in Ignore_Lines. 161 162 Task_Dispatching_Policy : Character; 163 -- Indicates task dispatching policy for units in this file. Space means 164 -- tasking was not used, or that no Task_Dispatching_Policy pragma was 165 -- present or that this is a language defined unit. Otherwise set to 166 -- first character (upper case) of policy name. Not set if 'P' appears 167 -- in Ignore_Lines. 168 169 Compile_Errors : Boolean; 170 -- Set to True if compile errors for unit. Note that No_Object will 171 -- always be set as well in this case. Not set if 'P' appears in 172 -- Ignore_Lines. 173 174 GNATprove_Mode : Boolean; 175 -- Set to True if ALI and object file produced in GNATprove_Mode as 176 -- signalled by GP appearing on the P line. Not set if 'P' appears in 177 -- Ignore_Lines. 178 179 No_Component_Reordering : Boolean; 180 -- Set to True if file was compiled with a configuration pragma file 181 -- containing pragma No_Component_Reordering. Not set if 'P' appears 182 -- in 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 Frontend_Exceptions : Boolean; 203 -- Set to True if file was compiled with front-end exceptions. Not set 204 -- if 'P' appears in Ignore_Lines. 205 206 Zero_Cost_Exceptions : Boolean; 207 -- Set to True if file was compiled with zero cost exceptions. Not set 208 -- if 'P' appears in Ignore_Lines. 209 210 Restrictions : Restrictions_Info; 211 -- Restrictions information reconstructed from R lines 212 213 First_Interrupt_State : Interrupt_State_Id; 214 Last_Interrupt_State : Interrupt_State_Id'Base; 215 -- These point to the first and last entries in the interrupt state 216 -- table for this unit. If no entries, then Last_Interrupt_State = 217 -- First_Interrupt_State - 1 (that's why the 'Base reference is there, 218 -- it can be one less than the lower bound of the subtype). Not set if 219 -- 'I' appears in Ignore_Lines 220 221 First_Specific_Dispatching : Priority_Specific_Dispatching_Id; 222 Last_Specific_Dispatching : Priority_Specific_Dispatching_Id'Base; 223 -- These point to the first and last entries in the priority specific 224 -- dispatching table for this unit. If there are no entries, then 225 -- Last_Specific_Dispatching = First_Specific_Dispatching - 1. That 226 -- is why the 'Base reference is there, it can be one less than the 227 -- lower bound of the subtype. Not set if 'S' appears in Ignore_Lines. 228 end record; 229 230 No_Main_Priority : constant Int := -1; 231 -- Code for no main priority set 232 233 No_Main_CPU : constant Int := -1; 234 -- Code for no main cpu set 235 236 package ALIs is new Table.Table ( 237 Table_Component_Type => ALIs_Record, 238 Table_Index_Type => ALI_Id, 239 Table_Low_Bound => First_ALI_Entry, 240 Table_Initial => 500, 241 Table_Increment => 200, 242 Table_Name => "ALIs"); 243 244 ---------------- 245 -- Unit Table -- 246 ---------------- 247 248 -- Each unit within an ALI file generates an entry in the unit table 249 250 No_Unit_Id : constant Unit_Id := Unit_Id'First; 251 -- Special value indicating no unit table entry 252 253 First_Unit_Entry : constant Unit_Id := No_Unit_Id + 1; 254 -- Id of first actual entry in table 255 256 type Unit_Type is (Is_Spec, Is_Body, Is_Spec_Only, Is_Body_Only); 257 -- Indicates type of entry, if both body and spec appear in the ALI file, 258 -- then the first unit is marked Is_Body, and the second is marked Is_Spec. 259 -- If only a spec appears, then it is marked as Is_Spec_Only, and if only 260 -- a body appears, then it is marked Is_Body_Only). 261 262 subtype Version_String is String (1 .. 8); 263 -- Version string, taken from unit record 264 265 type Unit_Record is record 266 My_ALI : ALI_Id; 267 -- Corresponding ALI entry 268 269 Uname : Unit_Name_Type; 270 -- Name of Unit 271 272 Sfile : File_Name_Type; 273 -- Name of source file 274 275 Preelab : Boolean; 276 -- Indicates presence of PR parameter for a preelaborated package 277 278 No_Elab : Boolean; 279 -- Indicates presence of NE parameter for a unit that has does not 280 -- have an elaboration routine (since it has no elaboration code). 281 282 Pure : Boolean; 283 -- Indicates presence of PU parameter for a package having pragma Pure 284 285 Dynamic_Elab : Boolean; 286 -- Set to True if the unit was compiled with dynamic elaboration checks 287 -- (i.e. either -gnatE or pragma Elaboration_Checks (RM) was used to 288 -- compile the unit). 289 290 Elaborate_Body : Boolean; 291 -- Indicates presence of EB parameter for a package which has a pragma 292 -- Elaborate_Body, and also for generic package instantiations. 293 294 Set_Elab_Entity : Boolean; 295 -- Indicates presence of EE parameter for a unit which has an 296 -- elaboration entity which must be set true as part of the 297 -- elaboration of the unit. 298 299 Has_RACW : Boolean; 300 -- Indicates presence of RA parameter for a package that declares at 301 -- least one Remote Access to Class_Wide (RACW) object. 302 303 Remote_Types : Boolean; 304 -- Indicates presence of RT parameter for a package which has a 305 -- pragma Remote_Types. 306 307 Serious_Errors : Boolean; 308 -- Indicates presence of SE parameter indicating that compilation of 309 -- the unit encountered as serious error. 310 311 Shared_Passive : Boolean; 312 -- Indicates presence of SP parameter for a package which has a pragma 313 -- Shared_Passive. 314 315 RCI : Boolean; 316 -- Indicates presence of RC parameter for a package which has a pragma 317 -- Remote_Call_Interface. 318 319 Predefined : Boolean; 320 -- Indicates if unit is language predefined (or a child of such a unit) 321 322 Internal : Boolean; 323 -- Indicates if unit is an internal unit (or a child of such a unit) 324 325 First_With : With_Id; 326 -- Id of first withs table entry for this file 327 328 Last_With : With_Id; 329 -- Id of last withs table entry for this file 330 331 First_Arg : Arg_Id; 332 -- Id of first args table entry for this file 333 334 Last_Arg : Arg_Id; 335 -- Id of last args table entry for this file 336 337 Utype : Unit_Type; 338 -- Type of entry 339 340 Is_Generic : Boolean; 341 -- True for generic unit (i.e. a generic declaration, or a generic 342 -- body). False for a non-generic unit. 343 344 Unit_Kind : Character; 345 -- Indicates the nature of the unit. 'p' for Packages and 's' for 346 -- subprograms. 347 348 Version : Version_String; 349 -- Version of unit 350 351 Icasing : Casing_Type; 352 -- Indicates casing of identifiers in source file for this unit. This 353 -- is used for informational output, and also for constructing the main 354 -- unit if it is being built in Ada. 355 356 Kcasing : Casing_Type; 357 -- Indicates casing of keywords in source file for this unit. This is 358 -- used for informational output, and also for constructing the main 359 -- unit if it is being built in Ada. 360 361 Elab_Position : Nat; 362 -- Initialized to zero. Set non-zero when a unit is chosen and 363 -- placed in the elaboration order. The value represents the 364 -- ordinal position in the elaboration order. 365 366 Init_Scalars : Boolean; 367 -- Set True if IS qualifier appears in ALI file, indicating that 368 -- an Initialize_Scalars pragma applies to the unit. 369 370 SAL_Interface : Boolean; 371 -- Set True when this is an interface to a standalone library 372 373 Directly_Scanned : Boolean; 374 -- True iff it is a unit from an ALI file specified to gnatbind 375 376 Body_Needed_For_SAL : Boolean; 377 -- Indicates that the source for the body of the unit (subprogram, 378 -- package, or generic unit) must be included in a standalone library. 379 380 Elaborate_Body_Desirable : Boolean; 381 -- Indicates that the front end elaboration circuitry decided that it 382 -- would be a good idea if this package had Elaborate_Body. The binder 383 -- will attempt, but does not promise, to place the elaboration call 384 -- for the body right after the call for the spec, or at least as close 385 -- together as possible. 386 387 Optimize_Alignment : Character; 388 -- Optimize_Alignment setting. Set to L/S/T/O for OL/OS/OT/OO present. 389 390 Has_Finalizer : Boolean; 391 -- Indicates whether a package body or a spec has a library-level 392 -- finalization routine. 393 394 Primary_Stack_Count : Int; 395 -- Indicates the number of task objects declared in this unit that have 396 -- default sized primary stacks. 397 398 Sec_Stack_Count : Int; 399 -- Indicates the number of task objects declared in this unit that have 400 -- default sized secondary stacks. 401 end record; 402 403 package Units is new Table.Table ( 404 Table_Component_Type => Unit_Record, 405 Table_Index_Type => Unit_Id, 406 Table_Low_Bound => First_Unit_Entry, 407 Table_Initial => 100, 408 Table_Increment => 200, 409 Table_Name => "Unit"); 410 411 --------------------------- 412 -- Interrupt State Table -- 413 --------------------------- 414 415 -- An entry is made in this table for each I (interrupt state) line 416 -- encountered in the input ALI file. The First/Last_Interrupt_Id 417 -- fields of the ALI file entry show the range of entries defined 418 -- within a particular ALI file. 419 420 type Interrupt_State_Record is record 421 Interrupt_Id : Nat; 422 -- Id from interrupt state entry 423 424 Interrupt_State : Character; 425 -- State from interrupt state entry ('u'/'r'/'s') 426 427 IS_Pragma_Line : Nat; 428 -- Line number of Interrupt_State pragma 429 end record; 430 431 package Interrupt_States is new Table.Table ( 432 Table_Component_Type => Interrupt_State_Record, 433 Table_Index_Type => Interrupt_State_Id'Base, 434 Table_Low_Bound => Interrupt_State_Id'First, 435 Table_Initial => 100, 436 Table_Increment => 200, 437 Table_Name => "Interrupt_States"); 438 439 ----------------------------------------- 440 -- Priority Specific Dispatching Table -- 441 ----------------------------------------- 442 443 -- An entry is made in this table for each S (priority specific 444 -- dispatching) line encountered in the input ALI file. The 445 -- First/Last_Specific_Dispatching_Id fields of the ALI file 446 -- entry show the range of entries defined within a particular 447 -- ALI file. 448 449 type Specific_Dispatching_Record is record 450 Dispatching_Policy : Character; 451 -- First character (upper case) of the corresponding policy name 452 453 First_Priority : Nat; 454 -- Lower bound of the priority range to which the specified dispatching 455 -- policy applies. 456 457 Last_Priority : Nat; 458 -- Upper bound of the priority range to which the specified dispatching 459 -- policy applies. 460 461 PSD_Pragma_Line : Nat; 462 -- Line number of Priority_Specific_Dispatching pragma 463 end record; 464 465 package Specific_Dispatching is new Table.Table ( 466 Table_Component_Type => Specific_Dispatching_Record, 467 Table_Index_Type => Priority_Specific_Dispatching_Id'Base, 468 Table_Low_Bound => Priority_Specific_Dispatching_Id'First, 469 Table_Initial => 100, 470 Table_Increment => 200, 471 Table_Name => "Priority_Specific_Dispatching"); 472 473 -------------- 474 -- Switches -- 475 -------------- 476 477 -- These switches record status information about ali files that 478 -- have been read, for quick reference without searching tables. 479 480 -- Note: a switch will be left set at its default value if the line 481 -- which might otherwise set it is ignored (from Ignore_Lines). 482 483 Dynamic_Elaboration_Checks_Specified : Boolean := False; 484 -- Set to False by Initialize_ALI. Set to True if Scan_ALI reads 485 -- a unit for which dynamic elaboration checking is enabled. 486 487 Frontend_Exceptions_Specified : Boolean := False; 488 -- Set to False by Initialize_ALI. Set to True if an ali file is read that 489 -- has a P line specifying the generation of front-end exceptions. 490 491 GNATprove_Mode_Specified : Boolean := False; 492 -- Set to True if an ali file was produced in GNATprove mode. 493 494 Initialize_Scalars_Used : Boolean := False; 495 -- Set True if an ali file contains the Initialize_Scalars flag 496 497 Locking_Policy_Specified : Character := ' '; 498 -- Set to blank by Initialize_ALI. Set to the appropriate locking policy 499 -- character if an ali file contains a P line setting the locking policy. 500 501 No_Normalize_Scalars_Specified : Boolean := False; 502 -- Set to False by Initialize_ALI. Set to True if an ali file indicates 503 -- that the file was compiled without normalize scalars. 504 505 No_Component_Reordering_Specified : Boolean := False; 506 -- Set to False by Initialize_ALI. Set to True if an ali file contains 507 -- the No_Component_Reordering flag. 508 509 No_Object_Specified : Boolean := False; 510 -- Set to False by Initialize_ALI. Set to True if an ali file contains 511 -- the No_Object flag. 512 513 Normalize_Scalars_Specified : Boolean := False; 514 -- Set to False by Initialize_ALI. Set to True if an ali file indicates 515 -- that the file was compiled in Normalize_Scalars mode. 516 517 Partition_Elaboration_Policy_Specified : Character := ' '; 518 -- Set to blank by Initialize_ALI. Set to the appropriate partition 519 -- elaboration policy character if an ali file contains a P line setting 520 -- the policy. 521 522 Queuing_Policy_Specified : Character := ' '; 523 -- Set to blank by Initialize_ALI. Set to the appropriate queuing policy 524 -- character if an ali file contains a P line setting the queuing policy. 525 526 Cumulative_Restrictions : Restrictions_Info := No_Restrictions; 527 -- This variable records the cumulative contributions of R lines in all 528 -- ali files, showing whether a restriction pragma exists anywhere, and 529 -- accumulating the aggregate knowledge of violations. 530 531 SSO_Default_Specified : Boolean := False; 532 -- Set to True if at least one ALI file contains an OH/OL flag indicating 533 -- that it was compiled with a configuration pragmas file containing the 534 -- pragma Default_Scalar_Storage_Order (OH/OL present in ALI file P line). 535 536 Stack_Check_Switch_Set : Boolean := False; 537 -- Set to True if at least one ALI file contains '-fstack-check' in its 538 -- argument list. 539 540 Task_Dispatching_Policy_Specified : Character := ' '; 541 -- Set to blank by Initialize_ALI. Set to the appropriate task dispatching 542 -- policy character if an ali file contains a P line setting the 543 -- task dispatching policy. 544 545 Unreserve_All_Interrupts_Specified : Boolean := False; 546 -- Set to False by Initialize_ALI. Set to True if an ali file is read that 547 -- has P line specifying unreserve all interrupts mode. 548 549 Zero_Cost_Exceptions_Specified : Boolean := False; 550 -- Set to False by Initialize_ALI. Set to True if an ali file is read that 551 -- has a P line specifying the generation of zero cost exceptions. 552 553 ----------------- 554 -- Withs Table -- 555 ----------------- 556 557 -- Each With line (W line) in an ALI file generates a Withs table entry 558 559 -- Note: there will be no entries in this table if 'W' lines are ignored 560 561 No_With_Id : constant With_Id := With_Id'First; 562 -- Special value indicating no withs table entry 563 564 First_With_Entry : constant With_Id := No_With_Id + 1; 565 -- Id of first actual entry in table 566 567 type With_Record is record 568 Uname : Unit_Name_Type; 569 -- Name of Unit 570 571 Sfile : File_Name_Type; 572 -- Name of source file, set to No_File in generic case 573 574 Afile : File_Name_Type; 575 -- Name of ALI file, set to No_File in generic case 576 577 Elaborate : Boolean; 578 -- Indicates presence of E parameter 579 580 Elaborate_All : Boolean; 581 -- Indicates presence of EA parameter 582 583 Elab_All_Desirable : Boolean; 584 -- Indicates presence of AD parameter 585 586 Elab_Desirable : Boolean; 587 -- Indicates presence of ED parameter 588 589 SAL_Interface : Boolean := False; 590 -- True if the Unit is an Interface of a Stand-Alone Library 591 592 Implicit_With : Boolean := False; 593 -- True if this is an implicit with generated by the compiler 594 595 Limited_With : Boolean := False; 596 -- True if this is a limited_with_clause 597 end record; 598 599 package Withs is new Table.Table ( 600 Table_Component_Type => With_Record, 601 Table_Index_Type => With_Id, 602 Table_Low_Bound => First_With_Entry, 603 Table_Initial => 5000, 604 Table_Increment => 200, 605 Table_Name => "Withs"); 606 607 --------------------- 608 -- Arguments Table -- 609 --------------------- 610 611 -- Each Arg line (A line) in an ALI file generates an Args table entry 612 613 -- Note: there will be no entries in this table if 'A' lines are ignored 614 615 No_Arg_Id : constant Arg_Id := Arg_Id'First; 616 -- Special value indicating no args table entry 617 618 First_Arg_Entry : constant Arg_Id := No_Arg_Id + 1; 619 -- Id of first actual entry in table 620 621 package Args is new Table.Table ( 622 Table_Component_Type => String_Ptr, 623 Table_Index_Type => Arg_Id, 624 Table_Low_Bound => First_Arg_Entry, 625 Table_Initial => 1000, 626 Table_Increment => 100, 627 Table_Name => "Args"); 628 629 -------------------------- 630 -- Linker_Options Table -- 631 -------------------------- 632 633 -- If an ALI file has one of more Linker_Options lines, then a single 634 -- entry is made in this table. If more than one Linker_Options lines 635 -- appears in a given ALI file, then the arguments are concatenated 636 -- to form the entry in this table, using a NUL character as the 637 -- separator, and a final NUL character is appended to the end. 638 639 -- Note: there will be no entries in this table if 'L' lines are ignored 640 641 type Linker_Option_Record is record 642 Name : Name_Id; 643 -- Name entry containing concatenated list of Linker_Options 644 -- arguments separated by NUL and ended by NUL as described above. 645 646 Unit : Unit_Id; 647 -- Unit_Id for the entry 648 649 Internal_File : Boolean; 650 -- Set True if the linker options are from an internal file. This is 651 -- used to insert certain standard entries after all the user entries 652 -- but before the entries from the run-time. 653 654 Original_Pos : Positive; 655 -- Keep track of original position in the linker options table. This 656 -- is used to implement a stable sort when we sort the linker options 657 -- table. 658 end record; 659 660 -- The indexes of active entries in this table range from 1 to the 661 -- value of Linker_Options.Last. The zero'th element is for sort call. 662 663 package Linker_Options is new Table.Table ( 664 Table_Component_Type => Linker_Option_Record, 665 Table_Index_Type => Integer, 666 Table_Low_Bound => 0, 667 Table_Initial => 200, 668 Table_Increment => 400, 669 Table_Name => "Linker_Options"); 670 671 ----------------- 672 -- Notes Table -- 673 ----------------- 674 675 -- The notes table records entries from N lines 676 677 type Notes_Record is record 678 Pragma_Type : Character; 679 -- 'A', 'C', 'I', 'S', 'T' for Annotate/Comment/Ident/Subtitle/Title 680 681 Pragma_Line : Nat; 682 -- Line number of pragma 683 684 Pragma_Col : Nat; 685 -- Column number of pragma 686 687 Pragma_Source_File : File_Name_Type; 688 -- Source file of pragma 689 690 Pragma_Args : Name_Id; 691 -- Pragma arguments. No_Name if no arguments, otherwise a single 692 -- name table entry consisting of all the characters on the notes 693 -- line from the first non-blank character following the source 694 -- location to the last character on the line. 695 end record; 696 697 -- The indexes of active entries in this table range from 1 to the 698 -- value of Linker_Options.Last. The zero'th element is for convenience 699 -- if the table needs to be sorted. 700 701 package Notes is new Table.Table ( 702 Table_Component_Type => Notes_Record, 703 Table_Index_Type => Integer, 704 Table_Low_Bound => 0, 705 Table_Initial => 200, 706 Table_Increment => 400, 707 Table_Name => "Notes"); 708 709 ------------------------------------------- 710 -- External Version Reference Hash Table -- 711 ------------------------------------------- 712 713 -- This hash table keeps track of external version reference strings 714 -- as read from E lines in the ali file. The stored values do not 715 -- include the terminating quote characters. 716 717 -- Note: there will be no entries in this table if 'E' lines are ignored 718 719 type Vindex is range 0 .. 98; 720 -- Type to define range of headers 721 722 function SHash (S : String_Ptr) return Vindex; 723 -- Hash function for this table 724 725 function SEq (F1, F2 : String_Ptr) return Boolean; 726 -- Equality function for this table 727 728 package Version_Ref is new Simple_HTable ( 729 Header_Num => Vindex, 730 Element => Boolean, 731 No_Element => False, 732 Key => String_Ptr, 733 Hash => SHash, 734 Equal => SEq); 735 736 ------------------------- 737 -- No_Dependency Table -- 738 ------------------------- 739 740 -- Each R line for a No_Dependency Restriction generates an entry in 741 -- this No_Dependency table. 742 743 type No_Dep_Record is record 744 ALI_File : ALI_Id; 745 -- ALI File containing the entry 746 747 No_Dep_Unit : Name_Id; 748 -- Id for names table entry including entire name, including periods 749 end record; 750 751 package No_Deps is new Table.Table ( 752 Table_Component_Type => No_Dep_Record, 753 Table_Index_Type => Integer, 754 Table_Low_Bound => 0, 755 Table_Initial => 200, 756 Table_Increment => 400, 757 Table_Name => "No_Deps"); 758 759 ------------------------------------ 760 -- Sdep (Source Dependency) Table -- 761 ------------------------------------ 762 763 -- Each source dependency (D line) in an ALI file generates an entry in the 764 -- Sdep table. 765 766 -- Note: there will be no entries in this table if 'D' lines are ignored 767 768 No_Sdep_Id : constant Sdep_Id := Sdep_Id'First; 769 -- Special value indicating no Sdep table entry 770 771 First_Sdep_Entry : Sdep_Id := No_Sdep_Id + 1; 772 -- Id of first Sdep entry for current ali file. This is initialized to the 773 -- first Sdep entry in the table, and then incremented appropriately as 774 -- successive ALI files are scanned. 775 776 type Sdep_Record is record 777 Sfile : File_Name_Type; 778 -- Name of source file 779 780 Stamp : Time_Stamp_Type; 781 -- Time stamp value. Note that this will be all zero characters for the 782 -- dummy entries for missing or non-dependent files. 783 784 Checksum : Word; 785 -- Checksum value. Note that this will be all zero characters for the 786 -- dummy entries for missing or non-dependent files 787 788 Dummy_Entry : Boolean; 789 -- Set True for dummy entries that correspond to missing files or files 790 -- where no dependency relationship exists. 791 792 Subunit_Name : Name_Id; 793 -- Name_Id for subunit name if present, else No_Name 794 795 Unit_Name : Name_Id; 796 -- Name_Id for the unit name if not a subunit (No_Name for a subunit) 797 Rfile : File_Name_Type; 798 -- Reference file name. Same as Sfile unless a Source_Reference pragma 799 -- was used, in which case it reflects the name used in the pragma. 800 801 Start_Line : Nat; 802 -- Starting line number in file. Always 1, unless a Source_Reference 803 -- pragma was used, in which case it reflects the line number value 804 -- given in the pragma. 805 806 end record; 807 808 package Sdep is new Table.Table ( 809 Table_Component_Type => Sdep_Record, 810 Table_Index_Type => Sdep_Id, 811 Table_Low_Bound => First_Sdep_Entry, 812 Table_Initial => 5000, 813 Table_Increment => 200, 814 Table_Name => "Sdep"); 815 816 ---------------------------- 817 -- Use of Name Table Info -- 818 ---------------------------- 819 820 -- All unit names and file names are entered into the Names table. The Info 821 -- fields of these entries are used as follows: 822 823 -- Unit name Info field has Unit_Id of unit table entry 824 -- ALI file name Info field has ALI_Id of ALI table entry 825 -- Source file name Info field has Source_Id of source table entry 826 827 -------------------------- 828 -- Cross-Reference Data -- 829 -------------------------- 830 831 -- The following table records cross-reference sections, there is one entry 832 -- for each X header line in the ALI file for an xref section. 833 834 -- Note: there will be no entries in this table if 'X' lines are ignored 835 836 type Xref_Section_Record is record 837 File_Num : Sdep_Id; 838 -- Dependency number for file (entry in Sdep.Table) 839 840 File_Name : File_Name_Type; 841 -- Name of file 842 843 First_Entity : Nat; 844 -- First entry in Xref_Entity table 845 846 Last_Entity : Nat; 847 -- Last entry in Xref_Entity table 848 end record; 849 850 package Xref_Section is new Table.Table ( 851 Table_Component_Type => Xref_Section_Record, 852 Table_Index_Type => Nat, 853 Table_Low_Bound => 1, 854 Table_Initial => 50, 855 Table_Increment => 300, 856 Table_Name => "Xref_Section"); 857 858 -- The following is used to indicate whether a typeref field is present 859 -- for the entity, and if so what kind of typeref field. 860 861 type Tref_Kind is ( 862 Tref_None, -- No typeref present 863 Tref_Access, -- Access type typeref (points to designated type) 864 Tref_Derived, -- Derived type typeref (points to parent type) 865 Tref_Type); -- All other cases 866 867 type Visibility_Kind is 868 (Global, -- Library level entity 869 Static, -- Static C/C++ entity 870 Other); -- Local and other entity 871 872 -- The following table records entities for which xrefs are recorded 873 874 type Xref_Entity_Record is record 875 Line : Pos; 876 -- Line number of definition 877 878 Etype : Character; 879 -- Set to the identification character for the entity. See section 880 -- "Cross-Reference Entity Identifiers" in lib-xref.ads for details. 881 882 Col : Pos; 883 -- Column number of definition 884 885 Visibility : Visibility_Kind; 886 -- Visibility of entity 887 888 Entity : Name_Id; 889 -- Name of entity 890 891 Iref_File_Num : Sdep_Id; 892 -- This field is set to the dependency reference for the file containing 893 -- the generic entity that this one instantiates, or to No_Sdep_Id if 894 -- the current entity is not an instantiation 895 896 Iref_Line : Nat; 897 -- This field is set to the line number in Iref_File_Num of the generic 898 -- entity that this one instantiates, or to zero if the current entity 899 -- is not an instantiation. 900 901 Rref_Line : Nat; 902 -- This field is set to the line number of a renaming reference if 903 -- one is present, or to zero if no renaming reference is present 904 905 Rref_Col : Nat; 906 -- This field is set to the column number of a renaming reference 907 -- if one is present, or to zero if no renaming reference is present. 908 909 Tref : Tref_Kind; 910 -- Indicates if a typeref is present, and if so what kind. Set to 911 -- Tref_None if no typeref field is present. 912 913 Tref_File_Num : Sdep_Id; 914 -- This field is set to No_Sdep_Id if no typeref is present, or 915 -- if the typeref refers to an entity in standard. Otherwise it 916 -- it is the dependency reference for the file containing the 917 -- declaration of the typeref entity. 918 919 Tref_Line : 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 line number of the declaration of the typeref entity. 923 924 Tref_Type : Character; 925 -- This field is set to blank if no typeref is present, or if the 926 -- typeref refers to an entity in standard. Otherwise it contains 927 -- the identification character for the typeref entity. See section 928 -- "Cross-Reference Entity Identifiers" in lib-xref.ads for details. 929 930 Tref_Col : Nat; 931 -- This field is set to zero if no typeref is present, or if the 932 -- typeref refers to an entity in standard. Otherwise it contains 933 -- the column number of the declaration of the parent type. 934 935 Tref_Standard_Entity : Name_Id; 936 -- This field is set to No_Name if no typeref is present or if the 937 -- typeref refers to a declared entity rather than an entity in 938 -- package Standard. If there is a typeref that references an 939 -- entity in package Standard, then this field is a Name_Id 940 -- reference for the entity name. 941 942 Oref_File_Num : Sdep_Id; 943 -- This field is set to No_Sdep_Id if the entity doesn't override any 944 -- other entity, or to the dependency reference for the overridden 945 -- entity. 946 947 Oref_Line : Nat; 948 Oref_Col : Nat; 949 -- These two fields are set to the line and column of the overridden 950 -- entity. 951 952 First_Xref : Nat; 953 -- Index into Xref table of first cross-reference 954 955 Last_Xref : Nat; 956 -- Index into Xref table of last cross-reference. The value in 957 -- Last_Xref can be less than the First_Xref value to indicate 958 -- that no entries are present in the Xref Table. 959 end record; 960 961 package Xref_Entity is new Table.Table ( 962 Table_Component_Type => Xref_Entity_Record, 963 Table_Index_Type => Nat, 964 Table_Low_Bound => 1, 965 Table_Initial => 500, 966 Table_Increment => 300, 967 Table_Name => "Xref_Entity"); 968 969 Array_Index_Reference : constant Character := '*'; 970 Interface_Reference : constant Character := 'I'; 971 -- Some special types of references. In the ALI file itself, these 972 -- are output as attributes of the entity, not as references, but 973 -- there is no provision in Xref_Entity_Record for storing multiple 974 -- such references. 975 976 -- The following table records actual cross-references 977 978 type Xref_Record is record 979 File_Num : Sdep_Id; 980 -- Set to the file dependency number for the cross-reference. Note 981 -- that if no file entry is present explicitly, this is just a copy 982 -- of the reference for the current cross-reference section. 983 984 Line : Nat; 985 -- Line number for the reference. This is zero when referencing a 986 -- predefined entity, but in this case Name is set. 987 988 Rtype : Character; 989 -- Indicates type of reference, using code used in ALI file: 990 -- r = reference 991 -- m = modification 992 -- b = body entity 993 -- c = completion of private or incomplete type 994 -- x = type extension 995 -- i = implicit reference 996 -- Array_Index_Reference = reference to the index of an array 997 -- Interface_Reference = reference to an interface implemented 998 -- by the type 999 -- See description in lib-xref.ads for further details 1000 1001 Col : Nat; 1002 -- Column number for the reference 1003 1004 Name : Name_Id := No_Name; 1005 -- This is only used when referencing a predefined entity. Currently, 1006 -- this only occurs for array indexes. 1007 1008 -- Note: for instantiation references, Rtype is set to ' ', and Col is 1009 -- set to zero. One or more such entries can follow any other reference. 1010 -- When there is more than one such entry, this is to be read as: 1011 -- e.g. ref1 ref2 ref3 1012 -- ref1 is a reference to an entity that was instantied at ref2. 1013 -- ref2 itself is also the result of an instantiation, that took 1014 -- place at ref3 1015 1016 Imported_Lang : Name_Id := No_Name; 1017 Imported_Name : Name_Id := No_Name; 1018 -- Language and name of imported entity reference 1019 end record; 1020 1021 package Xref is new Table.Table ( 1022 Table_Component_Type => Xref_Record, 1023 Table_Index_Type => Nat, 1024 Table_Low_Bound => 1, 1025 Table_Initial => 2000, 1026 Table_Increment => 300, 1027 Table_Name => "Xref"); 1028 1029 -------------------------------------- 1030 -- Subprograms for Reading ALI File -- 1031 -------------------------------------- 1032 1033 procedure Initialize_ALI; 1034 -- Initialize the ALI tables. Also resets all switch values to defaults 1035 1036 function Scan_ALI 1037 (F : File_Name_Type; 1038 T : Text_Buffer_Ptr; 1039 Ignore_ED : Boolean; 1040 Err : Boolean; 1041 Read_Xref : Boolean := False; 1042 Read_Lines : String := ""; 1043 Ignore_Lines : String := "X"; 1044 Ignore_Errors : Boolean := False; 1045 Directly_Scanned : Boolean := False) return ALI_Id; 1046 -- Given the text, T, of an ALI file, F, scan and store the information 1047 -- from the file, and return the Id of the resulting entry in the ALI 1048 -- table. Switch settings may be modified as described above in the 1049 -- switch description settings. 1050 -- 1051 -- Ignore_ED is normally False. If set to True, it indicates that 1052 -- all AD/ED (elaboration desirable) indications in the ALI file are 1053 -- to be ignored. This parameter is obsolete now that the -f switch 1054 -- is removed from gnatbind, and should be removed ??? 1055 -- 1056 -- Err determines the action taken on an incorrectly formatted file. 1057 -- If Err is False, then an error message is output, and the program 1058 -- is terminated. If Err is True, then no error message is output, 1059 -- and No_ALI_Id is returned. 1060 -- 1061 -- Ignore_Lines requests that Scan_ALI ignore any lines that start 1062 -- with any given key character. The default value of X causes all 1063 -- Xref lines to be ignored. The corresponding data in the ALI 1064 -- tables will not be filled in this case. It is not possible 1065 -- to ignore U (unit) lines, they are always read. 1066 -- 1067 -- Read_Lines requests that Scan_ALI process only lines that start 1068 -- with one of the given characters. The corresponding data in the 1069 -- ALI file for any characters not given in the list will not be 1070 -- set. The default value of the null string indicates that all 1071 -- lines should be read (unless Ignore_Lines is specified). U 1072 -- (unit) lines are always read regardless of the value of this 1073 -- parameter. 1074 -- 1075 -- Note: either Ignore_Lines or Read_Lines should be non-null, but not 1076 -- both. If both are provided then only the Read_Lines value is used, 1077 -- and the Ignore_Lines parameter is ignored. 1078 -- 1079 -- Read_XREF is set True to read and acquire the cross-reference 1080 -- information. If Read_XREF is set to True, then the effect is to ignore 1081 -- all lines other than U, W, D and X lines and the Ignore_Lines and 1082 -- Read_Lines parameters are ignored (i.e. the use of True for Read_XREF 1083 -- is equivalent to specifying an argument of "UWDX" for Read_Lines. 1084 -- 1085 -- Ignore_Errors is normally False. If it is set True, then Scan_ALI 1086 -- will do its best to scan through a file and extract all information 1087 -- it can, even if there are errors. In this case Err is only set if 1088 -- Scan_ALI was completely unable to process the file (e.g. it did not 1089 -- look like an ALI file at all). Ignore_Errors is intended to improve 1090 -- the downward compatibility of new compilers with old tools. 1091 -- 1092 -- Directly_Scanned is normally False. If it is set to True, then the 1093 -- units (spec and/or body) corresponding to the ALI file are marked as 1094 -- such. It is used to decide for what units gnatbind should generate 1095 -- the symbols corresponding to 'Version or 'Body_Version in 1096 -- Stand-Alone Libraries. 1097 1098end ALI; 1099