1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- B I N D G E N -- 6-- -- 7-- B o d y -- 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 26with Casing; use Casing; 27with Fname; use Fname; 28with Gnatvsn; use Gnatvsn; 29with Hostparm; 30with Namet; use Namet; 31with Opt; use Opt; 32with Osint; use Osint; 33with Osint.B; use Osint.B; 34with Output; use Output; 35with Rident; use Rident; 36with Stringt; use Stringt; 37with Table; 38with Targparm; use Targparm; 39with Types; use Types; 40 41with System.OS_Lib; 42with System.WCh_Con; use System.WCh_Con; 43 44with GNAT.Heap_Sort_A; use GNAT.Heap_Sort_A; 45with GNAT.HTable; 46 47package body Bindgen is 48 Statement_Buffer : String (1 .. 1000); 49 -- Buffer used for constructing output statements 50 51 Stm_Last : Natural := 0; 52 -- Stm_Last location in Statement_Buffer currently set 53 54 With_GNARL : Boolean := False; 55 -- Flag which indicates whether the program uses the GNARL library 56 -- (presence of the unit System.OS_Interface) 57 58 Num_Elab_Calls : Nat := 0; 59 -- Number of generated calls to elaboration routines 60 61 Num_Primary_Stacks : Int := 0; 62 -- Number of default-sized primary stacks the binder needs to allocate for 63 -- task objects declared in the program. 64 65 Num_Sec_Stacks : Int := 0; 66 -- Number of default-sized primary stacks the binder needs to allocate for 67 -- task objects declared in the program. 68 69 System_Restrictions_Used : Boolean := False; 70 -- Flag indicating whether the unit System.Restrictions is in the closure 71 -- of the partition. This is set by Resolve_Binder_Options, and is used 72 -- to determine whether or not to initialize the restrictions information 73 -- in the body of the binder generated file (we do not want to do this 74 -- unconditionally, since it drags in the System.Restrictions unit 75 -- unconditionally, which is unpleasand, especially for ZFP etc.) 76 77 Dispatching_Domains_Used : Boolean := False; 78 -- Flag indicating whether multiprocessor dispatching domains are used in 79 -- the closure of the partition. This is set by Resolve_Binder_Options, and 80 -- is used to call the routine to disallow the creation of new dispatching 81 -- domains just before calling the main procedure from the environment 82 -- task. 83 84 System_Secondary_Stack_Package_In_Closure : Boolean := False; 85 -- Flag indicating whether the unit System.Secondary_Stack is in the 86 -- closure of the partition. This is set by Resolve_Binder_Options, and 87 -- is used to initialize the package in cases where the run-time brings 88 -- in package but the secondary stack is not used. 89 90 System_Tasking_Restricted_Stages_Used : Boolean := False; 91 -- Flag indicating whether the unit System.Tasking.Restricted.Stages is in 92 -- the closure of the partition. This is set by Resolve_Binder_Options, 93 -- and it used to call a routine to active all the tasks at the end of 94 -- the elaboration when partition elaboration policy is sequential. 95 96 System_Interrupts_Used : Boolean := False; 97 -- Flag indicating whether the unit System.Interrups is in the closure of 98 -- the partition. This is set by Resolve_Binder_Options, and it used to 99 -- attach interrupt handlers at the end of the elaboration when partition 100 -- elaboration policy is sequential. 101 102 System_BB_CPU_Primitives_Multiprocessors_Used : Boolean := False; 103 -- Flag indicating whether unit System.BB.CPU_Primitives.Multiprocessors 104 -- is in the closure of the partition. This is set by procedure 105 -- Resolve_Binder_Options, and it is used to call a procedure that starts 106 -- slave processors. 107 108 System_Version_Control_Used : Boolean := False; 109 -- Flag indicating whether unit System.Version_Control is in the closure. 110 -- This unit is implicitly withed by the compiler when Version or 111 -- Body_Version attributes are used. If the package is not in the closure, 112 -- the version definitions can be removed. 113 114 Lib_Final_Built : Boolean := False; 115 -- Flag indicating whether the finalize_library rountine has been built 116 117 Bind_Env_String_Built : Boolean := False; 118 -- Flag indicating whether a bind environment string has been built 119 120 CodePeer_Wrapper_Name : constant String := "call_main_subprogram"; 121 -- For CodePeer, introduce a wrapper subprogram which calls the 122 -- user-defined main subprogram. 123 124 ---------------------------------- 125 -- Interface_State Pragma Table -- 126 ---------------------------------- 127 128 -- This table assembles the interface state pragma information from 129 -- all the units in the partition. Note that Bcheck has already checked 130 -- that the information is consistent across units. The entries 131 -- in this table are n/u/r/s for not set/user/runtime/system. 132 133 package IS_Pragma_Settings is new Table.Table 134 (Table_Component_Type => Character, 135 Table_Index_Type => Int, 136 Table_Low_Bound => 0, 137 Table_Initial => 100, 138 Table_Increment => 200, 139 Table_Name => "IS_Pragma_Settings"); 140 141 -- This table assembles the Priority_Specific_Dispatching pragma 142 -- information from all the units in the partition. Note that Bcheck has 143 -- already checked that the information is consistent across units. 144 -- The entries in this table are the upper case first character of the 145 -- policy name, e.g. 'F' for FIFO_Within_Priorities. 146 147 package PSD_Pragma_Settings is new Table.Table 148 (Table_Component_Type => Character, 149 Table_Index_Type => Int, 150 Table_Low_Bound => 0, 151 Table_Initial => 100, 152 Table_Increment => 200, 153 Table_Name => "PSD_Pragma_Settings"); 154 155 ---------------------------- 156 -- Bind_Environment Table -- 157 ---------------------------- 158 159 subtype Header_Num is Int range 0 .. 36; 160 161 function Hash (Nam : Name_Id) return Header_Num; 162 163 package Bind_Environment is new GNAT.HTable.Simple_HTable 164 (Header_Num => Header_Num, 165 Element => Name_Id, 166 No_Element => No_Name, 167 Key => Name_Id, 168 Hash => Hash, 169 Equal => "="); 170 171 ---------------------- 172 -- Run-Time Globals -- 173 ---------------------- 174 175 -- This section documents the global variables that are set from the 176 -- generated binder file. 177 178 -- Main_Priority : Integer; 179 -- Time_Slice_Value : Integer; 180 -- Heap_Size : Natural; 181 -- WC_Encoding : Character; 182 -- Locking_Policy : Character; 183 -- Queuing_Policy : Character; 184 -- Task_Dispatching_Policy : Character; 185 -- Priority_Specific_Dispatching : System.Address; 186 -- Num_Specific_Dispatching : Integer; 187 -- Restrictions : System.Address; 188 -- Interrupt_States : System.Address; 189 -- Num_Interrupt_States : Integer; 190 -- Unreserve_All_Interrupts : Integer; 191 -- Exception_Tracebacks : Integer; 192 -- Exception_Tracebacks_Symbolic : Integer; 193 -- Detect_Blocking : Integer; 194 -- Default_Stack_Size : Integer; 195 -- Default_Secondary_Stack_Size : System.Parameters.Size_Type; 196 -- Leap_Seconds_Support : Integer; 197 -- Main_CPU : Integer; 198 -- Default_Sized_SS_Pool : System.Address; 199 -- Binder_Sec_Stacks_Count : Natural; 200 201 -- Main_Priority is the priority value set by pragma Priority in the main 202 -- program. If no such pragma is present, the value is -1. 203 204 -- Time_Slice_Value is the time slice value set by pragma Time_Slice in the 205 -- main program, or by the use of a -Tnnn parameter for the binder (if both 206 -- are present, the binder value overrides). The value is in milliseconds. 207 -- A value of zero indicates that time slicing should be suppressed. If no 208 -- pragma is present, and no -T switch was used, the value is -1. 209 210 -- WC_Encoding shows the wide character encoding method used for the main 211 -- program. This is one of the encoding letters defined in 212 -- System.WCh_Con.WC_Encoding_Letters. 213 214 -- Locking_Policy is a space if no locking policy was specified for the 215 -- partition. If a locking policy was specified, the value is the upper 216 -- case first character of the locking policy name, for example, 'C' for 217 -- Ceiling_Locking. 218 219 -- Queuing_Policy is a space if no queuing policy was specified for the 220 -- partition. If a queuing policy was specified, the value is the upper 221 -- case first character of the queuing policy name for example, 'F' for 222 -- FIFO_Queuing. 223 224 -- Task_Dispatching_Policy is a space if no task dispatching policy was 225 -- specified for the partition. If a task dispatching policy was specified, 226 -- the value is the upper case first character of the policy name, e.g. 'F' 227 -- for FIFO_Within_Priorities. 228 229 -- Priority_Specific_Dispatching is the address of a string used to store 230 -- the task dispatching policy specified for the different priorities in 231 -- the partition. The length of this string is determined by the last 232 -- priority for which such a pragma applies (the string will be a null 233 -- string if no specific dispatching policies were used). If pragma were 234 -- present, the entries apply to the priorities in sequence from the first 235 -- priority. The value stored is the upper case first character of the 236 -- policy name, or 'F' (for FIFO_Within_Priorities) as the default value 237 -- for those priority ranges not specified. 238 239 -- Num_Specific_Dispatching is length of the Priority_Specific_Dispatching 240 -- string. It will be set to zero if no Priority_Specific_Dispatching 241 -- pragmas are present. 242 243 -- Restrictions is the address of a null-terminated string specifying the 244 -- restrictions information for the partition. The format is identical to 245 -- that of the parameter string found on R lines in ali files (see Lib.Writ 246 -- spec in lib-writ.ads for full details). The difference is that in this 247 -- context the values are the cumulative ones for the entire partition. 248 249 -- Interrupt_States is the address of a string used to specify the 250 -- cumulative results of Interrupt_State pragmas used in the partition. 251 -- The length of this string is determined by the last interrupt for which 252 -- such a pragma is given (the string will be a null string if no pragmas 253 -- were used). If pragma were present the entries apply to the interrupts 254 -- in sequence from the first interrupt, and are set to one of four 255 -- possible settings: 'n' for not specified, 'u' for user, 'r' for run 256 -- time, 's' for system, see description of Interrupt_State pragma for 257 -- further details. 258 259 -- Num_Interrupt_States is the length of the Interrupt_States string. It 260 -- will be set to zero if no Interrupt_State pragmas are present. 261 262 -- Unreserve_All_Interrupts is set to one if at least one unit in the 263 -- partition had a pragma Unreserve_All_Interrupts, and zero otherwise. 264 265 -- Exception_Tracebacks is set to one if the -Ea or -E parameter was 266 -- present in the bind and to zero otherwise. Note that on some targets 267 -- exception tracebacks are provided by default, so a value of zero for 268 -- this parameter does not necessarily mean no trace backs are available. 269 270 -- Exception_Tracebacks_Symbolic is set to one if the -Es parameter was 271 -- present in the bind and to zero otherwise. 272 273 -- Detect_Blocking indicates whether pragma Detect_Blocking is active or 274 -- not. A value of zero indicates that the pragma is not present, while a 275 -- value of 1 signals its presence in the partition. 276 277 -- Default_Stack_Size is the default stack size used when creating an Ada 278 -- task with no explicit Storage_Size clause. 279 280 -- Default_Secondary_Stack_Size is the default secondary stack size used 281 -- when creating an Ada task with no explicit Secondary_Stack_Size clause. 282 283 -- Leap_Seconds_Support denotes whether leap seconds have been enabled or 284 -- disabled. A value of zero indicates that leap seconds are turned "off", 285 -- while a value of one signifies "on" status. 286 287 -- Main_CPU is the processor set by pragma CPU in the main program. If no 288 -- such pragma is present, the value is -1. 289 290 -- Default_Sized_SS_Pool is set to the address of the default-sized 291 -- secondary stacks array generated by the binder. This pool of stacks is 292 -- generated when either the restriction No_Implicit_Heap_Allocations 293 -- or No_Implicit_Task_Allocations is active. 294 295 -- Binder_Sec_Stacks_Count is the number of generated secondary stacks in 296 -- the Default_Sized_SS_Pool. 297 298 procedure WBI (Info : String) renames Osint.B.Write_Binder_Info; 299 -- Convenient shorthand used throughout 300 301 ----------------------- 302 -- Local Subprograms -- 303 ----------------------- 304 305 procedure Gen_Adainit (Elab_Order : Unit_Id_Array); 306 -- Generates the Adainit procedure 307 308 procedure Gen_Adafinal; 309 -- Generate the Adafinal procedure 310 311 procedure Gen_Bind_Env_String; 312 -- Generate the bind environment buffer 313 314 procedure Gen_CodePeer_Wrapper; 315 -- For CodePeer, generate wrapper which calls user-defined main subprogram 316 317 procedure Gen_Elab_Calls (Elab_Order : Unit_Id_Array); 318 -- Generate sequence of elaboration calls 319 320 procedure Gen_Elab_Externals (Elab_Order : Unit_Id_Array); 321 -- Generate sequence of external declarations for elaboration 322 323 procedure Gen_Elab_Order (Elab_Order : Unit_Id_Array); 324 -- Generate comments showing elaboration order chosen 325 326 procedure Gen_Finalize_Library (Elab_Order : Unit_Id_Array); 327 -- Generate a sequence of finalization calls to elaborated packages 328 329 procedure Gen_Main; 330 -- Generate procedure main 331 332 procedure Gen_Object_Files_Options (Elab_Order : Unit_Id_Array); 333 -- Output comments containing a list of the full names of the object 334 -- files to be linked and the list of linker options supplied by 335 -- Linker_Options pragmas in the source. 336 337 procedure Gen_Output_File_Ada 338 (Filename : String; 339 Elab_Order : Unit_Id_Array); 340 -- Generate Ada output file 341 342 procedure Gen_Restrictions; 343 -- Generate initialization of restrictions variable 344 345 procedure Gen_Versions; 346 -- Output series of definitions for unit versions 347 348 function Get_Ada_Main_Name return String; 349 -- This function is used for the Ada main output to compute a usable name 350 -- for the generated main program. The normal main program name is 351 -- Ada_Main, but this won't work if the user has a unit with this name. 352 -- This function tries Ada_Main first, and if there is such a clash, then 353 -- it tries Ada_Name_01, Ada_Name_02 ... Ada_Name_99 in sequence. 354 355 function Get_Main_Unit_Name (S : String) return String; 356 -- Return the main unit name corresponding to S by replacing '.' with '_' 357 358 function Get_Main_Name return String; 359 -- This function is used in the main output case to compute the correct 360 -- external main program. It is "main" by default, unless the flag 361 -- Use_Ada_Main_Program_Name_On_Target is set, in which case it is the name 362 -- of the Ada main name without the "_ada". This default can be overridden 363 -- explicitly using the -Mname binder switch. 364 365 function Get_WC_Encoding return Character; 366 -- Return wide character encoding method to set as WC_Encoding in output. 367 -- If -W has been used, returns the specified encoding, otherwise returns 368 -- the encoding method used for the main program source. If there is no 369 -- main program source (-z switch used), returns brackets ('b'). 370 371 function Has_Finalizer (Elab_Order : Unit_Id_Array) return Boolean; 372 -- Determine whether the current unit has at least one library-level 373 -- finalizer. 374 375 function Lt_Linker_Option (Op1 : Natural; Op2 : Natural) return Boolean; 376 -- Compare linker options, when sorting, first according to 377 -- Is_Internal_File (internal files come later) and then by 378 -- elaboration order position (latest to earliest). 379 380 procedure Move_Linker_Option (From : Natural; To : Natural); 381 -- Move routine for sorting linker options 382 383 procedure Resolve_Binder_Options (Elab_Order : Unit_Id_Array); 384 -- Set the value of With_GNARL 385 386 procedure Set_Char (C : Character); 387 -- Set given character in Statement_Buffer at the Stm_Last + 1 position 388 -- and increment Stm_Last by one to reflect the stored character. 389 390 procedure Set_Int (N : Int); 391 -- Set given value in decimal in Statement_Buffer with no spaces starting 392 -- at the Stm_Last + 1 position, and updating Stm_Last past the value. A 393 -- minus sign is output for a negative value. 394 395 procedure Set_Boolean (B : Boolean); 396 -- Set given boolean value in Statement_Buffer at the Stm_Last + 1 position 397 -- and update Stm_Last past the value. 398 399 procedure Set_IS_Pragma_Table; 400 -- Initializes contents of IS_Pragma_Settings table from ALI table 401 402 procedure Set_Main_Program_Name; 403 -- Given the main program name in Name_Buffer (length in Name_Len) generate 404 -- the name of the routine to be used in the call. The name is generated 405 -- starting at Stm_Last + 1, and Stm_Last is updated past it. 406 407 procedure Set_Name_Buffer; 408 -- Set the value stored in positions 1 .. Name_Len of the Name_Buffer 409 410 procedure Set_PSD_Pragma_Table; 411 -- Initializes contents of PSD_Pragma_Settings table from ALI table 412 413 procedure Set_String (S : String); 414 -- Sets characters of given string in Statement_Buffer, starting at the 415 -- Stm_Last + 1 position, and updating last past the string value. 416 417 procedure Set_String_Replace (S : String); 418 -- Replaces the last S'Length characters in the Statement_Buffer with the 419 -- characters of S. The caller must ensure that these characters do in fact 420 -- exist in the Statement_Buffer. 421 422 procedure Set_Unit_Name; 423 -- Given a unit name in the Name_Buffer, copy it into Statement_Buffer, 424 -- starting at the Stm_Last + 1 position and update Stm_Last past the 425 -- value. Each dot (.) will be qualified into double underscores (__). 426 427 procedure Set_Unit_Number (U : Unit_Id); 428 -- Sets unit number (first unit is 1, leading zeroes output to line up all 429 -- output unit numbers nicely as required by the value, and by the total 430 -- number of units. 431 432 procedure Write_Statement_Buffer; 433 -- Write out contents of statement buffer up to Stm_Last, and reset 434 -- Stm_Last to 0. 435 436 procedure Write_Statement_Buffer (S : String); 437 -- First writes its argument (using Set_String (S)), then writes out the 438 -- contents of statement buffer up to Stm_Last, and resets Stm_Last to 0. 439 440 procedure Write_Bind_Line (S : String); 441 -- Write S (an LF-terminated string) to the binder file (for use with 442 -- Set_Special_Output). 443 444 ------------------ 445 -- Gen_Adafinal -- 446 ------------------ 447 448 procedure Gen_Adafinal is 449 begin 450 WBI (" procedure " & Ada_Final_Name.all & " is"); 451 452 -- Call s_stalib_adafinal to await termination of tasks and so on. We 453 -- want to do this if there is a main program, either in Ada or in some 454 -- other language. (Note that Bind_Main_Program is True for Ada mains, 455 -- but False for mains in other languages.) We do not want to do this if 456 -- we're binding a library. 457 458 if not Bind_For_Library and not CodePeer_Mode then 459 WBI (" procedure s_stalib_adafinal;"); 460 Set_String (" pragma Import (C, s_stalib_adafinal, "); 461 Set_String ("""system__standard_library__adafinal"");"); 462 Write_Statement_Buffer; 463 end if; 464 465 WBI (""); 466 WBI (" procedure Runtime_Finalize;"); 467 WBI (" pragma Import (C, Runtime_Finalize, " & 468 """__gnat_runtime_finalize"");"); 469 WBI (""); 470 WBI (" begin"); 471 472 if not CodePeer_Mode then 473 WBI (" if not Is_Elaborated then"); 474 WBI (" return;"); 475 WBI (" end if;"); 476 WBI (" Is_Elaborated := False;"); 477 end if; 478 479 WBI (" Runtime_Finalize;"); 480 481 -- By default (real targets), finalization is done differently depending 482 -- on whether this is the main program or a library. 483 484 if not CodePeer_Mode then 485 if not Bind_For_Library then 486 WBI (" s_stalib_adafinal;"); 487 elsif Lib_Final_Built then 488 WBI (" finalize_library;"); 489 else 490 WBI (" null;"); 491 end if; 492 493 -- Pragma Import C cannot be used on virtual targets, therefore call the 494 -- runtime finalization routine directly in CodePeer mode, where 495 -- imported functions are ignored. 496 497 else 498 WBI (" System.Standard_Library.Adafinal;"); 499 end if; 500 501 WBI (" end " & Ada_Final_Name.all & ";"); 502 WBI (""); 503 end Gen_Adafinal; 504 505 ----------------- 506 -- Gen_Adainit -- 507 ----------------- 508 509 procedure Gen_Adainit (Elab_Order : Unit_Id_Array) is 510 Main_Priority : Int renames ALIs.Table (ALIs.First).Main_Priority; 511 Main_CPU : Int renames ALIs.Table (ALIs.First).Main_CPU; 512 513 begin 514 -- Declare the access-to-subprogram type used for initialization of 515 -- of __gnat_finalize_library_objects. This is declared at library 516 -- level for compatibility with the type used in System.Soft_Links. 517 -- The import of the soft link which performs library-level object 518 -- finalization does not work for CodePeer, so regular Ada is used in 519 -- that case. For restricted run-time libraries (ZFP and Ravenscar) 520 -- tasks are non-terminating, so we do not want finalization. 521 522 if not Suppress_Standard_Library_On_Target 523 and then not CodePeer_Mode 524 and then not Configurable_Run_Time_On_Target 525 then 526 WBI (" type No_Param_Proc is access procedure;"); 527 WBI (" pragma Favor_Top_Level (No_Param_Proc);"); 528 WBI (""); 529 end if; 530 531 WBI (" procedure " & Ada_Init_Name.all & " is"); 532 533 -- In CodePeer mode, simplify adainit procedure by only calling 534 -- elaboration procedures. 535 536 if CodePeer_Mode then 537 WBI (" begin"); 538 539 -- If the standard library is suppressed, then the only global variables 540 -- that might be needed (by the Ravenscar profile) are the priority and 541 -- the processor for the environment task. 542 543 elsif Suppress_Standard_Library_On_Target then 544 if Main_Priority /= No_Main_Priority then 545 WBI (" Main_Priority : Integer;"); 546 WBI (" pragma Import (C, Main_Priority," & 547 " ""__gl_main_priority"");"); 548 WBI (""); 549 end if; 550 551 if Main_CPU /= No_Main_CPU then 552 WBI (" Main_CPU : Integer;"); 553 WBI (" pragma Import (C, Main_CPU," & 554 " ""__gl_main_cpu"");"); 555 WBI (""); 556 end if; 557 558 if System_Interrupts_Used 559 and then Partition_Elaboration_Policy_Specified = 'S' 560 then 561 WBI (" procedure Install_Restricted_Handlers_Sequential;"); 562 WBI (" pragma Import (C," & 563 "Install_Restricted_Handlers_Sequential," & 564 " ""__gnat_attach_all_handlers"");"); 565 WBI (""); 566 end if; 567 568 if System_Tasking_Restricted_Stages_Used 569 and then Partition_Elaboration_Policy_Specified = 'S' 570 then 571 WBI (" Partition_Elaboration_Policy : Character;"); 572 WBI (" pragma Import (C, Partition_Elaboration_Policy," & 573 " ""__gnat_partition_elaboration_policy"");"); 574 WBI (""); 575 WBI (" procedure Activate_All_Tasks_Sequential;"); 576 WBI (" pragma Import (C, Activate_All_Tasks_Sequential," & 577 " ""__gnat_activate_all_tasks"");"); 578 WBI (""); 579 end if; 580 581 if System_BB_CPU_Primitives_Multiprocessors_Used then 582 WBI (" procedure Start_Slave_CPUs;"); 583 WBI (" pragma Import (C, Start_Slave_CPUs," & 584 " ""__gnat_start_slave_cpus"");"); 585 WBI (""); 586 end if; 587 588 if System_Secondary_Stack_Package_In_Closure then 589 -- System.Secondary_Stack is in the closure of the program 590 -- because the program uses the secondary stack or the restricted 591 -- run-time is unconditionally calling SS_Init. In both cases, 592 -- SS_Init needs to know the number of secondary stacks created by 593 -- the binder. 594 595 WBI (" Binder_Sec_Stacks_Count : Natural;"); 596 WBI (" pragma Import (Ada, Binder_Sec_Stacks_Count, " & 597 """__gnat_binder_ss_count"");"); 598 WBI (""); 599 600 -- Import secondary stack pool variables if the secondary stack 601 -- used. They are not referenced otherwise. 602 603 if Sec_Stack_Used then 604 WBI (" Default_Secondary_Stack_Size : " & 605 "System.Parameters.Size_Type;"); 606 WBI (" pragma Import (C, Default_Secondary_Stack_Size, " & 607 """__gnat_default_ss_size"");"); 608 609 WBI (" Default_Sized_SS_Pool : System.Address;"); 610 WBI (" pragma Import (Ada, Default_Sized_SS_Pool, " & 611 """__gnat_default_ss_pool"");"); 612 613 WBI (""); 614 end if; 615 end if; 616 617 WBI (" begin"); 618 619 if Main_Priority /= No_Main_Priority then 620 Set_String (" Main_Priority := "); 621 Set_Int (Main_Priority); 622 Set_Char (';'); 623 Write_Statement_Buffer; 624 end if; 625 626 if Main_CPU /= No_Main_CPU then 627 Set_String (" Main_CPU := "); 628 Set_Int (Main_CPU); 629 Set_Char (';'); 630 Write_Statement_Buffer; 631 end if; 632 633 if System_Tasking_Restricted_Stages_Used 634 and then Partition_Elaboration_Policy_Specified = 'S' 635 then 636 Set_String (" Partition_Elaboration_Policy := '"); 637 Set_Char (Partition_Elaboration_Policy_Specified); 638 Set_String ("';"); 639 Write_Statement_Buffer; 640 end if; 641 642 if Main_Priority = No_Main_Priority 643 and then Main_CPU = No_Main_CPU 644 and then not System_Tasking_Restricted_Stages_Used 645 then 646 WBI (" null;"); 647 end if; 648 649 -- Generate the default-sized secondary stack pool if the secondary 650 -- stack is used by the program. 651 652 if System_Secondary_Stack_Package_In_Closure then 653 if Sec_Stack_Used then 654 -- Elaborate the body of the binder to initialize the default- 655 -- sized secondary stack pool. 656 657 WBI (""); 658 WBI (" " & Get_Ada_Main_Name & "'Elab_Body;"); 659 660 -- Generate the default-sized secondary stack pool and set the 661 -- related secondary stack globals. 662 663 Set_String (" Default_Secondary_Stack_Size := "); 664 665 if Opt.Default_Sec_Stack_Size /= Opt.No_Stack_Size then 666 Set_Int (Opt.Default_Sec_Stack_Size); 667 else 668 Set_String 669 ("System.Parameters.Runtime_Default_Sec_Stack_Size"); 670 end if; 671 672 Set_Char (';'); 673 Write_Statement_Buffer; 674 675 Set_String (" Binder_Sec_Stacks_Count := "); 676 Set_Int (Num_Sec_Stacks); 677 Set_Char (';'); 678 Write_Statement_Buffer; 679 680 WBI (" Default_Sized_SS_Pool := " & 681 "Sec_Default_Sized_Stacks'Address;"); 682 WBI (""); 683 684 else 685 -- The presence of System.Secondary_Stack in the closure of the 686 -- program implies the restricted run-time is unconditionally 687 -- calling SS_Init. Let SS_Init know that no stacks were 688 -- created. 689 690 WBI (" Binder_Sec_Stacks_Count := 0;"); 691 end if; 692 end if; 693 694 -- Normal case (standard library not suppressed). Set all global values 695 -- used by the run time. 696 697 else 698 WBI (" Main_Priority : Integer;"); 699 WBI (" pragma Import (C, Main_Priority, " & 700 """__gl_main_priority"");"); 701 WBI (" Time_Slice_Value : Integer;"); 702 WBI (" pragma Import (C, Time_Slice_Value, " & 703 """__gl_time_slice_val"");"); 704 WBI (" WC_Encoding : Character;"); 705 WBI (" pragma Import (C, WC_Encoding, ""__gl_wc_encoding"");"); 706 WBI (" Locking_Policy : Character;"); 707 WBI (" pragma Import (C, Locking_Policy, " & 708 """__gl_locking_policy"");"); 709 WBI (" Queuing_Policy : Character;"); 710 WBI (" pragma Import (C, Queuing_Policy, " & 711 """__gl_queuing_policy"");"); 712 WBI (" Task_Dispatching_Policy : Character;"); 713 WBI (" pragma Import (C, Task_Dispatching_Policy, " & 714 """__gl_task_dispatching_policy"");"); 715 WBI (" Priority_Specific_Dispatching : System.Address;"); 716 WBI (" pragma Import (C, Priority_Specific_Dispatching, " & 717 """__gl_priority_specific_dispatching"");"); 718 WBI (" Num_Specific_Dispatching : Integer;"); 719 WBI (" pragma Import (C, Num_Specific_Dispatching, " & 720 """__gl_num_specific_dispatching"");"); 721 WBI (" Main_CPU : Integer;"); 722 WBI (" pragma Import (C, Main_CPU, " & 723 """__gl_main_cpu"");"); 724 725 WBI (" Interrupt_States : System.Address;"); 726 WBI (" pragma Import (C, Interrupt_States, " & 727 """__gl_interrupt_states"");"); 728 WBI (" Num_Interrupt_States : Integer;"); 729 WBI (" pragma Import (C, Num_Interrupt_States, " & 730 """__gl_num_interrupt_states"");"); 731 WBI (" Unreserve_All_Interrupts : Integer;"); 732 WBI (" pragma Import (C, Unreserve_All_Interrupts, " & 733 """__gl_unreserve_all_interrupts"");"); 734 735 if Exception_Tracebacks or Exception_Tracebacks_Symbolic then 736 WBI (" Exception_Tracebacks : Integer;"); 737 WBI (" pragma Import (C, Exception_Tracebacks, " & 738 """__gl_exception_tracebacks"");"); 739 740 if Exception_Tracebacks_Symbolic then 741 WBI (" Exception_Tracebacks_Symbolic : Integer;"); 742 WBI (" pragma Import (C, Exception_Tracebacks_Symbolic, " & 743 """__gl_exception_tracebacks_symbolic"");"); 744 end if; 745 end if; 746 747 WBI (" Detect_Blocking : Integer;"); 748 WBI (" pragma Import (C, Detect_Blocking, " & 749 """__gl_detect_blocking"");"); 750 WBI (" Default_Stack_Size : Integer;"); 751 WBI (" pragma Import (C, Default_Stack_Size, " & 752 """__gl_default_stack_size"");"); 753 754 if Sec_Stack_Used then 755 WBI (" Default_Secondary_Stack_Size : " & 756 "System.Parameters.Size_Type;"); 757 WBI (" pragma Import (C, Default_Secondary_Stack_Size, " & 758 """__gnat_default_ss_size"");"); 759 end if; 760 761 WBI (" Leap_Seconds_Support : Integer;"); 762 WBI (" pragma Import (C, Leap_Seconds_Support, " & 763 """__gl_leap_seconds_support"");"); 764 WBI (" Bind_Env_Addr : System.Address;"); 765 WBI (" pragma Import (C, Bind_Env_Addr, " & 766 """__gl_bind_env_addr"");"); 767 768 -- Import entry point for elaboration time signal handler 769 -- installation, and indication of if it's been called previously. 770 771 WBI (""); 772 WBI (" procedure Runtime_Initialize " & 773 "(Install_Handler : Integer);"); 774 WBI (" pragma Import (C, Runtime_Initialize, " & 775 """__gnat_runtime_initialize"");"); 776 777 -- Import handlers attach procedure for sequential elaboration policy 778 779 if System_Interrupts_Used 780 and then Partition_Elaboration_Policy_Specified = 'S' 781 then 782 WBI (" procedure Install_Restricted_Handlers_Sequential;"); 783 WBI (" pragma Import (C," & 784 "Install_Restricted_Handlers_Sequential," & 785 " ""__gnat_attach_all_handlers"");"); 786 WBI (""); 787 end if; 788 789 -- Import task activation procedure for sequential elaboration 790 -- policy. 791 792 if System_Tasking_Restricted_Stages_Used 793 and then Partition_Elaboration_Policy_Specified = 'S' 794 then 795 WBI (" Partition_Elaboration_Policy : Character;"); 796 WBI (" pragma Import (C, Partition_Elaboration_Policy," & 797 " ""__gnat_partition_elaboration_policy"");"); 798 WBI (""); 799 WBI (" procedure Activate_All_Tasks_Sequential;"); 800 WBI (" pragma Import (C, Activate_All_Tasks_Sequential," & 801 " ""__gnat_activate_all_tasks"");"); 802 end if; 803 804 -- Import procedure to start slave cpus for bareboard runtime 805 806 if System_BB_CPU_Primitives_Multiprocessors_Used then 807 WBI (" procedure Start_Slave_CPUs;"); 808 WBI (" pragma Import (C, Start_Slave_CPUs," & 809 " ""__gnat_start_slave_cpus"");"); 810 end if; 811 812 -- For restricted run-time libraries (ZFP and Ravenscar) 813 -- tasks are non-terminating, so we do not want finalization. 814 815 if not Configurable_Run_Time_On_Target then 816 WBI (""); 817 WBI (" Finalize_Library_Objects : No_Param_Proc;"); 818 WBI (" pragma Import (C, Finalize_Library_Objects, " & 819 """__gnat_finalize_library_objects"");"); 820 end if; 821 822 -- Initialize stack limit variable of the environment task if the 823 -- stack check method is stack limit and stack check is enabled. 824 825 if Stack_Check_Limits_On_Target 826 and then (Stack_Check_Default_On_Target or Stack_Check_Switch_Set) 827 then 828 WBI (""); 829 WBI (" procedure Initialize_Stack_Limit;"); 830 WBI (" pragma Import (C, Initialize_Stack_Limit, " & 831 """__gnat_initialize_stack_limit"");"); 832 end if; 833 834 -- When dispatching domains are used then we need to signal it 835 -- before calling the main procedure. 836 837 if Dispatching_Domains_Used then 838 WBI (" procedure Freeze_Dispatching_Domains;"); 839 WBI (" pragma Import"); 840 WBI (" (Ada, Freeze_Dispatching_Domains, " 841 & """__gnat_freeze_dispatching_domains"");"); 842 end if; 843 844 -- Secondary stack global variables 845 846 WBI (" Binder_Sec_Stacks_Count : Natural;"); 847 WBI (" pragma Import (Ada, Binder_Sec_Stacks_Count, " & 848 """__gnat_binder_ss_count"");"); 849 850 WBI (" Default_Sized_SS_Pool : System.Address;"); 851 WBI (" pragma Import (Ada, Default_Sized_SS_Pool, " & 852 """__gnat_default_ss_pool"");"); 853 854 WBI (""); 855 856 -- Start of processing for Adainit 857 858 WBI (" begin"); 859 WBI (" if Is_Elaborated then"); 860 WBI (" return;"); 861 WBI (" end if;"); 862 WBI (" Is_Elaborated := True;"); 863 864 -- Call System.Elaboration_Allocators.Mark_Start_Of_Elaboration if 865 -- restriction No_Standard_Allocators_After_Elaboration is active. 866 867 if Cumulative_Restrictions.Set 868 (No_Standard_Allocators_After_Elaboration) 869 then 870 WBI (" System.Elaboration_Allocators." 871 & "Mark_Start_Of_Elaboration;"); 872 end if; 873 874 -- Generate assignments to initialize globals 875 876 Set_String (" Main_Priority := "); 877 Set_Int (Main_Priority); 878 Set_Char (';'); 879 Write_Statement_Buffer; 880 881 Set_String (" Time_Slice_Value := "); 882 883 if Task_Dispatching_Policy_Specified = 'F' 884 and then ALIs.Table (ALIs.First).Time_Slice_Value = -1 885 then 886 Set_Int (0); 887 else 888 Set_Int (ALIs.Table (ALIs.First).Time_Slice_Value); 889 end if; 890 891 Set_Char (';'); 892 Write_Statement_Buffer; 893 894 Set_String (" WC_Encoding := '"); 895 Set_Char (Get_WC_Encoding); 896 897 Set_String ("';"); 898 Write_Statement_Buffer; 899 900 Set_String (" Locking_Policy := '"); 901 Set_Char (Locking_Policy_Specified); 902 Set_String ("';"); 903 Write_Statement_Buffer; 904 905 Set_String (" Queuing_Policy := '"); 906 Set_Char (Queuing_Policy_Specified); 907 Set_String ("';"); 908 Write_Statement_Buffer; 909 910 Set_String (" Task_Dispatching_Policy := '"); 911 Set_Char (Task_Dispatching_Policy_Specified); 912 Set_String ("';"); 913 Write_Statement_Buffer; 914 915 if System_Tasking_Restricted_Stages_Used 916 and then Partition_Elaboration_Policy_Specified = 'S' 917 then 918 Set_String (" Partition_Elaboration_Policy := '"); 919 Set_Char (Partition_Elaboration_Policy_Specified); 920 Set_String ("';"); 921 Write_Statement_Buffer; 922 end if; 923 924 Gen_Restrictions; 925 926 WBI (" Priority_Specific_Dispatching :="); 927 WBI (" Local_Priority_Specific_Dispatching'Address;"); 928 929 Set_String (" Num_Specific_Dispatching := "); 930 Set_Int (PSD_Pragma_Settings.Last + 1); 931 Set_Char (';'); 932 Write_Statement_Buffer; 933 934 Set_String (" Main_CPU := "); 935 Set_Int (Main_CPU); 936 Set_Char (';'); 937 Write_Statement_Buffer; 938 939 WBI (" Interrupt_States := Local_Interrupt_States'Address;"); 940 941 Set_String (" Num_Interrupt_States := "); 942 Set_Int (IS_Pragma_Settings.Last + 1); 943 Set_Char (';'); 944 Write_Statement_Buffer; 945 946 Set_String (" Unreserve_All_Interrupts := "); 947 948 if Unreserve_All_Interrupts_Specified then 949 Set_String ("1"); 950 else 951 Set_String ("0"); 952 end if; 953 954 Set_Char (';'); 955 Write_Statement_Buffer; 956 957 if Exception_Tracebacks or Exception_Tracebacks_Symbolic then 958 WBI (" Exception_Tracebacks := 1;"); 959 960 if Exception_Tracebacks_Symbolic then 961 WBI (" Exception_Tracebacks_Symbolic := 1;"); 962 end if; 963 end if; 964 965 Set_String (" Detect_Blocking := "); 966 967 if Detect_Blocking then 968 Set_Int (1); 969 else 970 Set_Int (0); 971 end if; 972 973 Set_String (";"); 974 Write_Statement_Buffer; 975 976 Set_String (" Default_Stack_Size := "); 977 Set_Int (Default_Stack_Size); 978 Set_String (";"); 979 Write_Statement_Buffer; 980 981 Set_String (" Leap_Seconds_Support := "); 982 983 if Leap_Seconds_Support then 984 Set_Int (1); 985 else 986 Set_Int (0); 987 end if; 988 989 Set_String (";"); 990 Write_Statement_Buffer; 991 992 if Bind_Env_String_Built then 993 WBI (" Bind_Env_Addr := Bind_Env'Address;"); 994 end if; 995 996 WBI (""); 997 998 -- Generate default-sized secondary stack pool and set secondary 999 -- stack globals. 1000 1001 if Sec_Stack_Used then 1002 1003 -- Elaborate the body of the binder to initialize the default- 1004 -- sized secondary stack pool. 1005 1006 WBI (" " & Get_Ada_Main_Name & "'Elab_Body;"); 1007 1008 -- Generate the default-sized secondary stack pool and set the 1009 -- related secondary stack globals. 1010 1011 Set_String (" Default_Secondary_Stack_Size := "); 1012 1013 if Opt.Default_Sec_Stack_Size /= Opt.No_Stack_Size then 1014 Set_Int (Opt.Default_Sec_Stack_Size); 1015 else 1016 Set_String ("System.Parameters.Runtime_Default_Sec_Stack_Size"); 1017 end if; 1018 1019 Set_Char (';'); 1020 Write_Statement_Buffer; 1021 1022 Set_String (" Binder_Sec_Stacks_Count := "); 1023 Set_Int (Num_Sec_Stacks); 1024 Set_Char (';'); 1025 Write_Statement_Buffer; 1026 1027 Set_String (" Default_Sized_SS_Pool := "); 1028 1029 if Num_Sec_Stacks > 0 then 1030 Set_String ("Sec_Default_Sized_Stacks'Address;"); 1031 else 1032 Set_String ("System.Null_Address;"); 1033 end if; 1034 1035 Write_Statement_Buffer; 1036 WBI (""); 1037 end if; 1038 1039 -- Generate call to Runtime_Initialize 1040 1041 WBI (" Runtime_Initialize (1);"); 1042 end if; 1043 1044 -- Generate call to set Initialize_Scalar values if active 1045 1046 if Initialize_Scalars_Used then 1047 WBI (""); 1048 Set_String (" System.Scalar_Values.Initialize ('"); 1049 Set_Char (Initialize_Scalars_Mode1); 1050 Set_String ("', '"); 1051 Set_Char (Initialize_Scalars_Mode2); 1052 Set_String ("');"); 1053 Write_Statement_Buffer; 1054 end if; 1055 1056 -- Initialize stack limit variable of the environment task if the stack 1057 -- check method is stack limit and stack check is enabled. 1058 1059 if Stack_Check_Limits_On_Target 1060 and then (Stack_Check_Default_On_Target or Stack_Check_Switch_Set) 1061 then 1062 WBI (""); 1063 WBI (" Initialize_Stack_Limit;"); 1064 end if; 1065 1066 -- On CodePeer, the finalization of library objects is not relevant 1067 1068 if CodePeer_Mode then 1069 null; 1070 1071 -- If this is the main program case, attach finalize_library to the soft 1072 -- link. Do it only when not using a restricted run time, in which case 1073 -- tasks are non-terminating, so we do not want library-level 1074 -- finalization. 1075 1076 elsif not Bind_For_Library 1077 and then not Configurable_Run_Time_On_Target 1078 and then not Suppress_Standard_Library_On_Target 1079 then 1080 WBI (""); 1081 1082 if Lib_Final_Built then 1083 Set_String (" Finalize_Library_Objects := "); 1084 Set_String ("finalize_library'access;"); 1085 else 1086 Set_String (" Finalize_Library_Objects := null;"); 1087 end if; 1088 1089 Write_Statement_Buffer; 1090 end if; 1091 1092 -- Generate elaboration calls 1093 1094 if not CodePeer_Mode then 1095 WBI (""); 1096 end if; 1097 1098 Gen_Elab_Calls (Elab_Order); 1099 1100 if not CodePeer_Mode then 1101 1102 -- Call System.Elaboration_Allocators.Mark_Start_Of_Elaboration if 1103 -- restriction No_Standard_Allocators_After_Elaboration is active. 1104 1105 if Cumulative_Restrictions.Set 1106 (No_Standard_Allocators_After_Elaboration) 1107 then 1108 WBI 1109 (" System.Elaboration_Allocators.Mark_End_Of_Elaboration;"); 1110 end if; 1111 1112 -- From this point, no new dispatching domain can be created 1113 1114 if Dispatching_Domains_Used then 1115 WBI (" Freeze_Dispatching_Domains;"); 1116 end if; 1117 1118 -- Sequential partition elaboration policy 1119 1120 if Partition_Elaboration_Policy_Specified = 'S' then 1121 if System_Interrupts_Used then 1122 WBI (" Install_Restricted_Handlers_Sequential;"); 1123 end if; 1124 1125 if System_Tasking_Restricted_Stages_Used then 1126 WBI (" Activate_All_Tasks_Sequential;"); 1127 end if; 1128 end if; 1129 1130 if System_BB_CPU_Primitives_Multiprocessors_Used then 1131 WBI (" Start_Slave_CPUs;"); 1132 end if; 1133 end if; 1134 1135 WBI (" end " & Ada_Init_Name.all & ";"); 1136 WBI (""); 1137 end Gen_Adainit; 1138 1139 ------------------------- 1140 -- Gen_Bind_Env_String -- 1141 ------------------------- 1142 1143 procedure Gen_Bind_Env_String is 1144 procedure Write_Name_With_Len (Nam : Name_Id); 1145 -- Write Nam as a string literal, prefixed with one 1146 -- character encoding Nam's length. 1147 1148 ------------------------- 1149 -- Write_Name_With_Len -- 1150 ------------------------- 1151 1152 procedure Write_Name_With_Len (Nam : Name_Id) is 1153 begin 1154 Get_Name_String (Nam); 1155 1156 Start_String; 1157 Store_String_Char (Character'Val (Name_Len)); 1158 Store_String_Chars (Name_Buffer (1 .. Name_Len)); 1159 1160 Write_String_Table_Entry (End_String); 1161 end Write_Name_With_Len; 1162 1163 -- Local variables 1164 1165 Amp : Character; 1166 KN : Name_Id := No_Name; 1167 VN : Name_Id := No_Name; 1168 1169 -- Start of processing for Gen_Bind_Env_String 1170 1171 begin 1172 Bind_Environment.Get_First (KN, VN); 1173 1174 if VN = No_Name then 1175 return; 1176 end if; 1177 1178 Set_Special_Output (Write_Bind_Line'Access); 1179 1180 WBI (" Bind_Env : aliased constant String :="); 1181 Amp := ' '; 1182 while VN /= No_Name loop 1183 Write_Str (" " & Amp & ' '); 1184 Write_Name_With_Len (KN); 1185 Write_Str (" & "); 1186 Write_Name_With_Len (VN); 1187 Write_Eol; 1188 1189 Bind_Environment.Get_Next (KN, VN); 1190 Amp := '&'; 1191 end loop; 1192 WBI (" & ASCII.NUL;"); 1193 1194 Cancel_Special_Output; 1195 1196 Bind_Env_String_Built := True; 1197 end Gen_Bind_Env_String; 1198 1199 -------------------------- 1200 -- Gen_CodePeer_Wrapper -- 1201 -------------------------- 1202 1203 procedure Gen_CodePeer_Wrapper is 1204 Callee_Name : constant String := "Ada_Main_Program"; 1205 1206 begin 1207 if ALIs.Table (ALIs.First).Main_Program = Proc then 1208 WBI (" procedure " & CodePeer_Wrapper_Name & " is "); 1209 WBI (" begin"); 1210 WBI (" " & Callee_Name & ";"); 1211 1212 else 1213 WBI (" function " & CodePeer_Wrapper_Name & " return Integer is"); 1214 WBI (" begin"); 1215 WBI (" return " & Callee_Name & ";"); 1216 end if; 1217 1218 WBI (" end " & CodePeer_Wrapper_Name & ";"); 1219 WBI (""); 1220 end Gen_CodePeer_Wrapper; 1221 1222 -------------------- 1223 -- Gen_Elab_Calls -- 1224 -------------------- 1225 1226 procedure Gen_Elab_Calls (Elab_Order : Unit_Id_Array) is 1227 Check_Elab_Flag : Boolean; 1228 1229 begin 1230 -- Loop through elaboration order entries 1231 1232 for E in Elab_Order'Range loop 1233 declare 1234 Unum : constant Unit_Id := Elab_Order (E); 1235 U : Unit_Record renames Units.Table (Unum); 1236 1237 Unum_Spec : Unit_Id; 1238 -- This is the unit number of the spec that corresponds to 1239 -- this entry. It is the same as Unum except when the body 1240 -- and spec are different and we are currently processing 1241 -- the body, in which case it is the spec (Unum + 1). 1242 1243 begin 1244 if U.Utype = Is_Body then 1245 Unum_Spec := Unum + 1; 1246 else 1247 Unum_Spec := Unum; 1248 end if; 1249 1250 -- Nothing to do if predefined unit in no run time mode 1251 1252 if No_Run_Time_Mode and then Is_Predefined_File_Name (U.Sfile) then 1253 null; 1254 1255 -- Likewise if this is an interface to a stand alone library 1256 1257 elsif U.SAL_Interface then 1258 null; 1259 1260 -- Case of no elaboration code 1261 1262 elsif U.No_Elab 1263 1264 -- In CodePeer mode, we special case subprogram bodies which 1265 -- are handled in the 'else' part below, and lead to a call 1266 -- to <subp>'Elab_Subp_Body. 1267 1268 and then (not CodePeer_Mode 1269 1270 -- Test for spec 1271 1272 or else U.Utype = Is_Spec 1273 or else U.Utype = Is_Spec_Only 1274 or else U.Unit_Kind /= 's') 1275 then 1276 -- In the case of a body with a separate spec, where the 1277 -- separate spec has an elaboration entity defined, this is 1278 -- where we increment the elaboration entity if one exists. 1279 1280 -- Likewise for lone specs with an elaboration entity defined 1281 -- despite No_Elaboration_Code, e.g. when requested to preserve 1282 -- control flow. 1283 1284 if (U.Utype = Is_Body or else U.Utype = Is_Spec_Only) 1285 and then Units.Table (Unum_Spec).Set_Elab_Entity 1286 and then not CodePeer_Mode 1287 then 1288 Set_String (" E"); 1289 Set_Unit_Number (Unum_Spec); 1290 Set_String (" := E"); 1291 Set_Unit_Number (Unum_Spec); 1292 Set_String (" + 1;"); 1293 Write_Statement_Buffer; 1294 end if; 1295 1296 -- Here if elaboration code is present. If binding a library 1297 -- or if there is a non-Ada main subprogram then we generate: 1298 1299 -- if uname_E = 0 then 1300 -- uname'elab_[spec|body]; 1301 -- end if; 1302 -- uname_E := uname_E + 1; 1303 1304 -- Otherwise, elaboration routines are called unconditionally: 1305 1306 -- uname'elab_[spec|body]; 1307 -- uname_E := uname_E + 1; 1308 1309 -- The uname_E increment is skipped if this is a separate spec, 1310 -- since it will be done when we process the body. 1311 1312 -- In CodePeer mode, we do not generate any reference to xxx_E 1313 -- variables, only calls to 'Elab* subprograms. 1314 1315 else 1316 -- Check incompatibilities with No_Multiple_Elaboration 1317 1318 if not CodePeer_Mode 1319 and then Cumulative_Restrictions.Set (No_Multiple_Elaboration) 1320 then 1321 -- Force_Checking_Of_Elaboration_Flags (-F) not allowed 1322 1323 if Force_Checking_Of_Elaboration_Flags then 1324 Osint.Fail 1325 ("-F (force elaboration checks) switch not allowed " 1326 & "with restriction No_Multiple_Elaboration active"); 1327 1328 -- Interfacing of libraries not allowed 1329 1330 elsif Interface_Library_Unit then 1331 Osint.Fail 1332 ("binding of interfaced libraries not allowed " 1333 & "with restriction No_Multiple_Elaboration active"); 1334 1335 -- Non-Ada main program not allowed 1336 1337 elsif not Bind_Main_Program then 1338 Osint.Fail 1339 ("non-Ada main program not allowed " 1340 & "with restriction No_Multiple_Elaboration active"); 1341 end if; 1342 end if; 1343 1344 -- OK, see if we need to test elaboration flag 1345 1346 Check_Elab_Flag := 1347 Units.Table (Unum_Spec).Set_Elab_Entity 1348 and then not CodePeer_Mode 1349 and then (Force_Checking_Of_Elaboration_Flags 1350 or Interface_Library_Unit 1351 or not Bind_Main_Program); 1352 1353 if Check_Elab_Flag then 1354 Set_String (" if E"); 1355 Set_Unit_Number (Unum_Spec); 1356 Set_String (" = 0 then"); 1357 Write_Statement_Buffer; 1358 Set_String (" "); 1359 end if; 1360 1361 Set_String (" "); 1362 Get_Decoded_Name_String_With_Brackets (U.Uname); 1363 1364 if Name_Buffer (Name_Len) = 's' then 1365 Name_Buffer (Name_Len - 1 .. Name_Len + 8) := 1366 "'elab_spec"; 1367 Name_Len := Name_Len + 8; 1368 1369 -- Special case in CodePeer mode for subprogram bodies 1370 -- which correspond to CodePeer 'Elab_Subp_Body special 1371 -- init procedure. 1372 1373 elsif U.Unit_Kind = 's' and CodePeer_Mode then 1374 Name_Buffer (Name_Len - 1 .. Name_Len + 13) := 1375 "'elab_subp_body"; 1376 Name_Len := Name_Len + 13; 1377 1378 else 1379 Name_Buffer (Name_Len - 1 .. Name_Len + 8) := 1380 "'elab_body"; 1381 Name_Len := Name_Len + 8; 1382 end if; 1383 1384 Set_Casing (U.Icasing); 1385 Set_Name_Buffer; 1386 Set_Char (';'); 1387 Write_Statement_Buffer; 1388 1389 if Check_Elab_Flag then 1390 WBI (" end if;"); 1391 end if; 1392 1393 if U.Utype /= Is_Spec 1394 and then not CodePeer_Mode 1395 and then Units.Table (Unum_Spec).Set_Elab_Entity 1396 then 1397 Set_String (" E"); 1398 Set_Unit_Number (Unum_Spec); 1399 Set_String (" := E"); 1400 Set_Unit_Number (Unum_Spec); 1401 Set_String (" + 1;"); 1402 Write_Statement_Buffer; 1403 end if; 1404 end if; 1405 end; 1406 end loop; 1407 end Gen_Elab_Calls; 1408 1409 ------------------------ 1410 -- Gen_Elab_Externals -- 1411 ------------------------ 1412 1413 procedure Gen_Elab_Externals (Elab_Order : Unit_Id_Array) is 1414 begin 1415 if CodePeer_Mode then 1416 return; 1417 end if; 1418 1419 for E in Elab_Order'Range loop 1420 declare 1421 Unum : constant Unit_Id := Elab_Order (E); 1422 U : Unit_Record renames Units.Table (Unum); 1423 1424 begin 1425 -- Check for Elab_Entity to be set for this unit 1426 1427 if U.Set_Elab_Entity 1428 1429 -- Don't generate reference for stand alone library 1430 1431 and then not U.SAL_Interface 1432 1433 -- Don't generate reference for predefined file in No_Run_Time 1434 -- mode, since we don't include the object files in this case 1435 1436 and then not 1437 (No_Run_Time_Mode 1438 and then Is_Predefined_File_Name (U.Sfile)) 1439 then 1440 Get_Name_String (U.Sfile); 1441 Set_String (" "); 1442 Set_String ("E"); 1443 Set_Unit_Number (Unum); 1444 Set_String (" : Short_Integer; pragma Import (Ada, E"); 1445 Set_Unit_Number (Unum); 1446 Set_String (", """); 1447 Get_Name_String (U.Uname); 1448 Set_Unit_Name; 1449 Set_String ("_E"");"); 1450 Write_Statement_Buffer; 1451 end if; 1452 end; 1453 end loop; 1454 1455 WBI (""); 1456 end Gen_Elab_Externals; 1457 1458 -------------------- 1459 -- Gen_Elab_Order -- 1460 -------------------- 1461 1462 procedure Gen_Elab_Order (Elab_Order : Unit_Id_Array) is 1463 begin 1464 WBI (""); 1465 WBI (" -- BEGIN ELABORATION ORDER"); 1466 1467 for J in Elab_Order'Range loop 1468 Set_String (" -- "); 1469 Get_Name_String (Units.Table (Elab_Order (J)).Uname); 1470 Set_Name_Buffer; 1471 Write_Statement_Buffer; 1472 end loop; 1473 1474 WBI (" -- END ELABORATION ORDER"); 1475 end Gen_Elab_Order; 1476 1477 -------------------------- 1478 -- Gen_Finalize_Library -- 1479 -------------------------- 1480 1481 procedure Gen_Finalize_Library (Elab_Order : Unit_Id_Array) is 1482 procedure Gen_Header; 1483 -- Generate the header of the finalization routine 1484 1485 ---------------- 1486 -- Gen_Header -- 1487 ---------------- 1488 1489 procedure Gen_Header is 1490 begin 1491 WBI (" procedure finalize_library is"); 1492 WBI (" begin"); 1493 end Gen_Header; 1494 1495 -- Local variables 1496 1497 Count : Int := 1; 1498 U : Unit_Record; 1499 Uspec : Unit_Record; 1500 Unum : Unit_Id; 1501 1502 -- Start of processing for Gen_Finalize_Library 1503 1504 begin 1505 if CodePeer_Mode then 1506 return; 1507 end if; 1508 1509 for E in reverse Elab_Order'Range loop 1510 Unum := Elab_Order (E); 1511 U := Units.Table (Unum); 1512 1513 -- Dealing with package bodies is a little complicated. In such 1514 -- cases we must retrieve the package spec since it contains the 1515 -- spec of the body finalizer. 1516 1517 if U.Utype = Is_Body then 1518 Unum := Unum + 1; 1519 Uspec := Units.Table (Unum); 1520 else 1521 Uspec := U; 1522 end if; 1523 1524 Get_Name_String (Uspec.Uname); 1525 1526 -- We are only interested in non-generic packages 1527 1528 if U.Unit_Kind /= 'p' or else U.Is_Generic then 1529 null; 1530 1531 -- That aren't an interface to a stand alone library 1532 1533 elsif U.SAL_Interface then 1534 null; 1535 1536 -- Case of no finalization 1537 1538 elsif not U.Has_Finalizer then 1539 1540 -- The only case in which we have to do something is if this 1541 -- is a body, with a separate spec, where the separate spec 1542 -- has a finalizer. In that case, this is where we decrement 1543 -- the elaboration entity. 1544 1545 if U.Utype = Is_Body and then Uspec.Has_Finalizer then 1546 if not Lib_Final_Built then 1547 Gen_Header; 1548 Lib_Final_Built := True; 1549 end if; 1550 1551 Set_String (" E"); 1552 Set_Unit_Number (Unum); 1553 Set_String (" := E"); 1554 Set_Unit_Number (Unum); 1555 Set_String (" - 1;"); 1556 Write_Statement_Buffer; 1557 end if; 1558 1559 else 1560 if not Lib_Final_Built then 1561 Gen_Header; 1562 Lib_Final_Built := True; 1563 end if; 1564 1565 -- Generate: 1566 -- declare 1567 -- procedure F<Count>; 1568 1569 Set_String (" declare"); 1570 Write_Statement_Buffer; 1571 1572 Set_String (" procedure F"); 1573 Set_Int (Count); 1574 Set_Char (';'); 1575 Write_Statement_Buffer; 1576 1577 -- Generate: 1578 -- pragma Import (Ada, F<Count>, 1579 -- "xx__yy__finalize_[body|spec]"); 1580 1581 Set_String (" pragma Import (Ada, F"); 1582 Set_Int (Count); 1583 Set_String (", """); 1584 1585 -- Perform name construction 1586 1587 Set_Unit_Name; 1588 Set_String ("__finalize_"); 1589 1590 -- Package spec processing 1591 1592 if U.Utype = Is_Spec 1593 or else U.Utype = Is_Spec_Only 1594 then 1595 Set_String ("spec"); 1596 1597 -- Package body processing 1598 1599 else 1600 Set_String ("body"); 1601 end if; 1602 1603 Set_String (""");"); 1604 Write_Statement_Buffer; 1605 1606 -- If binding a library or if there is a non-Ada main subprogram 1607 -- then we generate: 1608 1609 -- begin 1610 -- uname_E := uname_E - 1; 1611 -- if uname_E = 0 then 1612 -- F<Count>; 1613 -- end if; 1614 -- end; 1615 1616 -- Otherwise, finalization routines are called unconditionally: 1617 1618 -- begin 1619 -- uname_E := uname_E - 1; 1620 -- F<Count>; 1621 -- end; 1622 1623 -- The uname_E decrement is skipped if this is a separate spec, 1624 -- since it will be done when we process the body. 1625 1626 WBI (" begin"); 1627 1628 if U.Utype /= Is_Spec then 1629 Set_String (" E"); 1630 Set_Unit_Number (Unum); 1631 Set_String (" := E"); 1632 Set_Unit_Number (Unum); 1633 Set_String (" - 1;"); 1634 Write_Statement_Buffer; 1635 end if; 1636 1637 if Interface_Library_Unit or not Bind_Main_Program then 1638 Set_String (" if E"); 1639 Set_Unit_Number (Unum); 1640 Set_String (" = 0 then"); 1641 Write_Statement_Buffer; 1642 Set_String (" "); 1643 end if; 1644 1645 Set_String (" F"); 1646 Set_Int (Count); 1647 Set_Char (';'); 1648 Write_Statement_Buffer; 1649 1650 if Interface_Library_Unit or not Bind_Main_Program then 1651 WBI (" end if;"); 1652 end if; 1653 1654 WBI (" end;"); 1655 1656 Count := Count + 1; 1657 end if; 1658 end loop; 1659 1660 if Lib_Final_Built then 1661 1662 -- It is possible that the finalization of a library-level object 1663 -- raised an exception. In that case import the actual exception 1664 -- and the routine necessary to raise it. 1665 1666 WBI (" declare"); 1667 WBI (" procedure Reraise_Library_Exception_If_Any;"); 1668 1669 Set_String (" pragma Import (Ada, "); 1670 Set_String ("Reraise_Library_Exception_If_Any, "); 1671 Set_String ("""__gnat_reraise_library_exception_if_any"");"); 1672 Write_Statement_Buffer; 1673 1674 WBI (" begin"); 1675 WBI (" Reraise_Library_Exception_If_Any;"); 1676 WBI (" end;"); 1677 WBI (" end finalize_library;"); 1678 WBI (""); 1679 end if; 1680 end Gen_Finalize_Library; 1681 1682 -------------- 1683 -- Gen_Main -- 1684 -------------- 1685 1686 procedure Gen_Main is 1687 begin 1688 if not No_Main_Subprogram then 1689 1690 -- To call the main program, we declare it using a pragma Import 1691 -- Ada with the right link name. 1692 1693 -- It might seem more obvious to "with" the main program, and call 1694 -- it in the normal Ada manner. We do not do this for three 1695 -- reasons: 1696 1697 -- 1. It is more efficient not to recompile the main program 1698 -- 2. We are not entitled to assume the source is accessible 1699 -- 3. We don't know what options to use to compile it 1700 1701 -- It is really reason 3 that is most critical (indeed we used 1702 -- to generate the "with", but several regression tests failed). 1703 1704 if ALIs.Table (ALIs.First).Main_Program = Func then 1705 WBI (" function Ada_Main_Program return Integer;"); 1706 else 1707 WBI (" procedure Ada_Main_Program;"); 1708 end if; 1709 1710 Set_String (" pragma Import (Ada, Ada_Main_Program, """); 1711 Get_Name_String (Units.Table (First_Unit_Entry).Uname); 1712 Set_Main_Program_Name; 1713 Set_String (""");"); 1714 1715 Write_Statement_Buffer; 1716 WBI (""); 1717 1718 -- For CodePeer, declare a wrapper for the user-defined main program 1719 1720 if CodePeer_Mode then 1721 Gen_CodePeer_Wrapper; 1722 end if; 1723 end if; 1724 1725 if Exit_Status_Supported_On_Target then 1726 Set_String (" function "); 1727 else 1728 Set_String (" procedure "); 1729 end if; 1730 1731 Set_String (Get_Main_Name); 1732 1733 if Command_Line_Args_On_Target then 1734 Write_Statement_Buffer; 1735 WBI (" (argc : Integer;"); 1736 WBI (" argv : System.Address;"); 1737 WBI (" envp : System.Address)"); 1738 1739 if Exit_Status_Supported_On_Target then 1740 WBI (" return Integer"); 1741 end if; 1742 1743 WBI (" is"); 1744 1745 else 1746 if Exit_Status_Supported_On_Target then 1747 Set_String (" return Integer is"); 1748 else 1749 Set_String (" is"); 1750 end if; 1751 1752 Write_Statement_Buffer; 1753 end if; 1754 1755 if Opt.Default_Exit_Status /= 0 1756 and then Bind_Main_Program 1757 and then not Configurable_Run_Time_Mode 1758 then 1759 WBI (" procedure Set_Exit_Status (Status : Integer);"); 1760 WBI (" pragma Import (C, Set_Exit_Status, " & 1761 """__gnat_set_exit_status"");"); 1762 WBI (""); 1763 end if; 1764 1765 -- Initialize and Finalize 1766 1767 if not CodePeer_Mode 1768 and then not Cumulative_Restrictions.Set (No_Finalization) 1769 then 1770 WBI (" procedure Initialize (Addr : System.Address);"); 1771 WBI (" pragma Import (C, Initialize, ""__gnat_initialize"");"); 1772 WBI (""); 1773 WBI (" procedure Finalize;"); 1774 WBI (" pragma Import (C, Finalize, ""__gnat_finalize"");"); 1775 end if; 1776 1777 -- If we want to analyze the stack, we must import corresponding symbols 1778 1779 if Dynamic_Stack_Measurement then 1780 WBI (""); 1781 WBI (" procedure Output_Results;"); 1782 WBI (" pragma Import (C, Output_Results, " & 1783 """__gnat_stack_usage_output_results"");"); 1784 1785 WBI (""); 1786 WBI (" " & 1787 "procedure Initialize_Stack_Analysis (Buffer_Size : Natural);"); 1788 WBI (" pragma Import (C, Initialize_Stack_Analysis, " & 1789 """__gnat_stack_usage_initialize"");"); 1790 end if; 1791 1792 -- Deal with declarations for main program case 1793 1794 if not No_Main_Subprogram then 1795 if ALIs.Table (ALIs.First).Main_Program = Func then 1796 WBI (" Result : Integer;"); 1797 WBI (""); 1798 end if; 1799 1800 if Bind_Main_Program 1801 and not Suppress_Standard_Library_On_Target 1802 and not CodePeer_Mode 1803 then 1804 WBI (" SEH : aliased array (1 .. 2) of Integer;"); 1805 WBI (""); 1806 end if; 1807 end if; 1808 1809 -- Generate a reference to Ada_Main_Program_Name. This symbol is not 1810 -- referenced elsewhere in the generated program, but is needed by 1811 -- the debugger (that's why it is generated in the first place). The 1812 -- reference stops Ada_Main_Program_Name from being optimized away by 1813 -- smart linkers. 1814 1815 -- Because this variable is unused, we make this variable "aliased" 1816 -- with a pragma Volatile in order to tell the compiler to preserve 1817 -- this variable at any level of optimization. 1818 1819 -- CodePeer and CCG do not need this extra code. The code is also not 1820 -- needed if the binder is in "Minimal Binder" mode. 1821 1822 if Bind_Main_Program 1823 and then not Minimal_Binder 1824 and then not CodePeer_Mode 1825 and then not Generate_C_Code 1826 then 1827 WBI (" Ensure_Reference : aliased System.Address := " & 1828 "Ada_Main_Program_Name'Address;"); 1829 WBI (" pragma Volatile (Ensure_Reference);"); 1830 WBI (""); 1831 end if; 1832 1833 WBI (" begin"); 1834 1835 -- Acquire command-line arguments if present on target 1836 1837 if CodePeer_Mode then 1838 null; 1839 1840 elsif Command_Line_Args_On_Target then 1841 1842 -- Initialize gnat_argc/gnat_argv only if not already initialized, 1843 -- to avoid losing the result of any command-line processing done by 1844 -- earlier GNAT run-time initialization. 1845 1846 WBI (" if gnat_argc = 0 then"); 1847 WBI (" gnat_argc := argc;"); 1848 WBI (" gnat_argv := argv;"); 1849 WBI (" end if;"); 1850 WBI (" gnat_envp := envp;"); 1851 WBI (""); 1852 1853 -- If configurable run-time and no command-line args, then nothing needs 1854 -- to be done since the gnat_argc/argv/envp variables are suppressed in 1855 -- this case. 1856 1857 elsif Configurable_Run_Time_On_Target then 1858 null; 1859 1860 -- Otherwise set dummy values (to be filled in by some other unit?) 1861 1862 else 1863 WBI (" gnat_argc := 0;"); 1864 WBI (" gnat_argv := System.Null_Address;"); 1865 WBI (" gnat_envp := System.Null_Address;"); 1866 end if; 1867 1868 if Opt.Default_Exit_Status /= 0 1869 and then Bind_Main_Program 1870 and then not Configurable_Run_Time_Mode 1871 then 1872 Set_String (" Set_Exit_Status ("); 1873 Set_Int (Opt.Default_Exit_Status); 1874 Set_String (");"); 1875 Write_Statement_Buffer; 1876 end if; 1877 1878 if Dynamic_Stack_Measurement then 1879 Set_String (" Initialize_Stack_Analysis ("); 1880 Set_Int (Dynamic_Stack_Measurement_Array_Size); 1881 Set_String (");"); 1882 Write_Statement_Buffer; 1883 end if; 1884 1885 if not Cumulative_Restrictions.Set (No_Finalization) 1886 and then not CodePeer_Mode 1887 then 1888 if not No_Main_Subprogram 1889 and then Bind_Main_Program 1890 and then not Suppress_Standard_Library_On_Target 1891 then 1892 WBI (" Initialize (SEH'Address);"); 1893 else 1894 WBI (" Initialize (System.Null_Address);"); 1895 end if; 1896 end if; 1897 1898 WBI (" " & Ada_Init_Name.all & ";"); 1899 1900 if not No_Main_Subprogram then 1901 if CodePeer_Mode then 1902 if ALIs.Table (ALIs.First).Main_Program = Proc then 1903 WBI (" " & CodePeer_Wrapper_Name & ";"); 1904 else 1905 WBI (" Result := " & CodePeer_Wrapper_Name & ";"); 1906 end if; 1907 1908 elsif ALIs.Table (ALIs.First).Main_Program = Proc then 1909 WBI (" Ada_Main_Program;"); 1910 1911 else 1912 WBI (" Result := Ada_Main_Program;"); 1913 end if; 1914 end if; 1915 1916 -- Adafinal call is skipped if no finalization 1917 1918 if not Cumulative_Restrictions.Set (No_Finalization) then 1919 WBI (" adafinal;"); 1920 end if; 1921 1922 -- Prints the result of static stack analysis 1923 1924 if Dynamic_Stack_Measurement then 1925 WBI (" Output_Results;"); 1926 end if; 1927 1928 -- Finalize is only called if we have a run time 1929 1930 if not Cumulative_Restrictions.Set (No_Finalization) 1931 and then not CodePeer_Mode 1932 then 1933 WBI (" Finalize;"); 1934 end if; 1935 1936 -- Return result 1937 1938 if Exit_Status_Supported_On_Target then 1939 if No_Main_Subprogram 1940 or else ALIs.Table (ALIs.First).Main_Program = Proc 1941 then 1942 WBI (" return (gnat_exit_status);"); 1943 else 1944 WBI (" return (Result);"); 1945 end if; 1946 end if; 1947 1948 WBI (" end;"); 1949 WBI (""); 1950 end Gen_Main; 1951 1952 ------------------------------ 1953 -- Gen_Object_Files_Options -- 1954 ------------------------------ 1955 1956 procedure Gen_Object_Files_Options (Elab_Order : Unit_Id_Array) is 1957 Lgnat : Natural; 1958 -- This keeps track of the position in the sorted set of entries in the 1959 -- Linker_Options table of where the first entry from an internal file 1960 -- appears. 1961 1962 Linker_Option_List_Started : Boolean := False; 1963 -- Set to True when "LINKER OPTION LIST" is displayed 1964 1965 procedure Write_Linker_Option; 1966 -- Write binder info linker option 1967 1968 ------------------------- 1969 -- Write_Linker_Option -- 1970 ------------------------- 1971 1972 procedure Write_Linker_Option is 1973 Start : Natural; 1974 Stop : Natural; 1975 1976 begin 1977 -- Loop through string, breaking at null's 1978 1979 Start := 1; 1980 while Start < Name_Len loop 1981 1982 -- Find null ending this section 1983 1984 Stop := Start + 1; 1985 while Name_Buffer (Stop) /= ASCII.NUL 1986 and then Stop <= Name_Len loop 1987 Stop := Stop + 1; 1988 end loop; 1989 1990 -- Process section if non-null 1991 1992 if Stop > Start then 1993 if Output_Linker_Option_List then 1994 if not Zero_Formatting then 1995 if not Linker_Option_List_Started then 1996 Linker_Option_List_Started := True; 1997 Write_Eol; 1998 Write_Str (" LINKER OPTION LIST"); 1999 Write_Eol; 2000 Write_Eol; 2001 end if; 2002 2003 Write_Str (" "); 2004 end if; 2005 2006 Write_Str (Name_Buffer (Start .. Stop - 1)); 2007 Write_Eol; 2008 end if; 2009 WBI (" -- " & Name_Buffer (Start .. Stop - 1)); 2010 end if; 2011 2012 Start := Stop + 1; 2013 end loop; 2014 end Write_Linker_Option; 2015 2016 -- Start of processing for Gen_Object_Files_Options 2017 2018 begin 2019 WBI ("-- BEGIN Object file/option list"); 2020 2021 if Object_List_Filename /= null then 2022 Set_List_File (Object_List_Filename.all); 2023 end if; 2024 2025 for E in Elab_Order'Range loop 2026 2027 -- If not spec that has an associated body, then generate a comment 2028 -- giving the name of the corresponding object file. 2029 2030 if not Units.Table (Elab_Order (E)).SAL_Interface 2031 and then Units.Table (Elab_Order (E)).Utype /= Is_Spec 2032 then 2033 Get_Name_String 2034 (ALIs.Table 2035 (Units.Table (Elab_Order (E)).My_ALI).Ofile_Full_Name); 2036 2037 -- If the presence of an object file is necessary or if it exists, 2038 -- then use it. 2039 2040 if not Hostparm.Exclude_Missing_Objects 2041 or else 2042 System.OS_Lib.Is_Regular_File (Name_Buffer (1 .. Name_Len)) 2043 then 2044 WBI (" -- " & Name_Buffer (1 .. Name_Len)); 2045 2046 if Output_Object_List then 2047 Write_Str (Name_Buffer (1 .. Name_Len)); 2048 Write_Eol; 2049 end if; 2050 end if; 2051 end if; 2052 end loop; 2053 2054 if Object_List_Filename /= null then 2055 Close_List_File; 2056 end if; 2057 2058 -- Add a "-Ldir" for each directory in the object path 2059 2060 for J in 1 .. Nb_Dir_In_Obj_Search_Path loop 2061 declare 2062 Dir : constant String_Ptr := Dir_In_Obj_Search_Path (J); 2063 2064 begin 2065 Name_Len := 0; 2066 Add_Str_To_Name_Buffer ("-L"); 2067 Add_Str_To_Name_Buffer (Dir.all); 2068 Write_Linker_Option; 2069 end; 2070 end loop; 2071 2072 if not (Opt.No_Run_Time_Mode or Opt.No_Stdlib) then 2073 Name_Len := 0; 2074 2075 if Opt.Shared_Libgnat then 2076 Add_Str_To_Name_Buffer ("-shared"); 2077 else 2078 Add_Str_To_Name_Buffer ("-static"); 2079 end if; 2080 2081 -- Write directly to avoid inclusion in -K output as -static and 2082 -- -shared are not usually specified linker options. 2083 2084 WBI (" -- " & Name_Buffer (1 .. Name_Len)); 2085 end if; 2086 2087 -- Sort linker options 2088 2089 -- This sort accomplishes two important purposes: 2090 2091 -- a) All application files are sorted to the front, and all GNAT 2092 -- internal files are sorted to the end. This results in a well 2093 -- defined dividing line between the two sets of files, for the 2094 -- purpose of inserting certain standard library references into 2095 -- the linker arguments list. 2096 2097 -- b) Given two different units, we sort the linker options so that 2098 -- those from a unit earlier in the elaboration order comes later 2099 -- in the list. This is a heuristic designed to create a more 2100 -- friendly order of linker options when the operations appear in 2101 -- separate units. The idea is that if unit A must be elaborated 2102 -- before unit B, then it is more likely that B references 2103 -- libraries included by A, than vice versa, so we want libraries 2104 -- included by A to come after libraries included by B. 2105 2106 -- These two criteria are implemented by function Lt_Linker_Option. Note 2107 -- that a special case of b) is that specs are elaborated before bodies, 2108 -- so linker options from specs come after linker options for bodies, 2109 -- and again, the assumption is that libraries used by the body are more 2110 -- likely to reference libraries used by the spec, than vice versa. 2111 2112 Sort 2113 (Linker_Options.Last, 2114 Move_Linker_Option'Access, 2115 Lt_Linker_Option'Access); 2116 2117 -- Write user linker options, i.e. the set of linker options that come 2118 -- from all files other than GNAT internal files, Lgnat is left set to 2119 -- point to the first entry from a GNAT internal file, or past the end 2120 -- of the entries if there are no internal files. 2121 2122 Lgnat := Linker_Options.Last + 1; 2123 2124 for J in 1 .. Linker_Options.Last loop 2125 if not Linker_Options.Table (J).Internal_File then 2126 Get_Name_String (Linker_Options.Table (J).Name); 2127 Write_Linker_Option; 2128 else 2129 Lgnat := J; 2130 exit; 2131 end if; 2132 end loop; 2133 2134 -- Now we insert standard linker options that must appear after the 2135 -- entries from user files, and before the entries from GNAT run-time 2136 -- files. The reason for this decision is that libraries referenced 2137 -- by internal routines may reference these standard library entries. 2138 2139 -- Note that we do not insert anything when pragma No_Run_Time has 2140 -- been specified or when the standard libraries are not to be used, 2141 -- otherwise on some platforms, we may get duplicate symbols when 2142 -- linking (not clear if this is still the case, but it is harmless). 2143 2144 if not (Opt.No_Run_Time_Mode or else Opt.No_Stdlib) then 2145 if With_GNARL then 2146 Name_Len := 0; 2147 2148 if Opt.Shared_Libgnat then 2149 Add_Str_To_Name_Buffer (Shared_Lib ("gnarl")); 2150 else 2151 Add_Str_To_Name_Buffer ("-lgnarl"); 2152 end if; 2153 2154 Write_Linker_Option; 2155 end if; 2156 2157 Name_Len := 0; 2158 2159 if Opt.Shared_Libgnat then 2160 Add_Str_To_Name_Buffer (Shared_Lib ("gnat")); 2161 else 2162 Add_Str_To_Name_Buffer ("-lgnat"); 2163 end if; 2164 2165 Write_Linker_Option; 2166 end if; 2167 2168 -- Write linker options from all internal files 2169 2170 for J in Lgnat .. Linker_Options.Last loop 2171 Get_Name_String (Linker_Options.Table (J).Name); 2172 Write_Linker_Option; 2173 end loop; 2174 2175 if Output_Linker_Option_List and then not Zero_Formatting then 2176 Write_Eol; 2177 end if; 2178 2179 WBI ("-- END Object file/option list "); 2180 end Gen_Object_Files_Options; 2181 2182 --------------------- 2183 -- Gen_Output_File -- 2184 --------------------- 2185 2186 procedure Gen_Output_File 2187 (Filename : String; 2188 Elab_Order : Unit_Id_Array) 2189 is 2190 begin 2191 -- Acquire settings for Interrupt_State pragmas 2192 2193 Set_IS_Pragma_Table; 2194 2195 -- Acquire settings for Priority_Specific_Dispatching pragma 2196 2197 Set_PSD_Pragma_Table; 2198 2199 -- Override time slice value if -T switch is set 2200 2201 if Time_Slice_Set then 2202 ALIs.Table (ALIs.First).Time_Slice_Value := Opt.Time_Slice_Value; 2203 end if; 2204 2205 -- Count number of elaboration calls 2206 2207 for E in Elab_Order'Range loop 2208 if Units.Table (Elab_Order (E)).No_Elab then 2209 null; 2210 else 2211 Num_Elab_Calls := Num_Elab_Calls + 1; 2212 end if; 2213 end loop; 2214 2215 -- Count the number of statically allocated stacks to be generated by 2216 -- the binder. If the user has specified the number of default-sized 2217 -- secondary stacks, use that number. Otherwise start the count at one 2218 -- as the binder is responsible for creating a secondary stack for the 2219 -- main task. 2220 2221 if Opt.Quantity_Of_Default_Size_Sec_Stacks /= -1 then 2222 Num_Sec_Stacks := Quantity_Of_Default_Size_Sec_Stacks; 2223 elsif Sec_Stack_Used then 2224 Num_Sec_Stacks := 1; 2225 end if; 2226 2227 for J in Units.First .. Units.Last loop 2228 Num_Primary_Stacks := 2229 Num_Primary_Stacks + Units.Table (J).Primary_Stack_Count; 2230 2231 Num_Sec_Stacks := 2232 Num_Sec_Stacks + Units.Table (J).Sec_Stack_Count; 2233 end loop; 2234 2235 -- Generate output file in appropriate language 2236 2237 Gen_Output_File_Ada (Filename, Elab_Order); 2238 end Gen_Output_File; 2239 2240 ------------------------- 2241 -- Gen_Output_File_Ada -- 2242 ------------------------- 2243 2244 procedure Gen_Output_File_Ada 2245 (Filename : String; Elab_Order : Unit_Id_Array) 2246 is 2247 Ada_Main : constant String := Get_Ada_Main_Name; 2248 -- Name to be used for generated Ada main program. See the body of 2249 -- function Get_Ada_Main_Name for details on the form of the name. 2250 2251 Needs_Library_Finalization : constant Boolean := 2252 not Configurable_Run_Time_On_Target 2253 and then Has_Finalizer (Elab_Order); 2254 -- For restricted run-time libraries (ZFP and Ravenscar) tasks are 2255 -- non-terminating, so we do not want finalization. 2256 2257 Bfiles : Name_Id; 2258 -- Name of generated bind file (spec) 2259 2260 Bfileb : Name_Id; 2261 -- Name of generated bind file (body) 2262 2263 begin 2264 -- Create spec first 2265 2266 Create_Binder_Output (Filename, 's', Bfiles); 2267 2268 -- We always compile the binder file in Ada 95 mode so that we properly 2269 -- handle use of Ada 2005 keywords as identifiers in Ada 95 mode. None 2270 -- of the Ada 2005 or Ada 2012 constructs are needed by the binder file. 2271 2272 WBI ("pragma Warnings (Off);"); 2273 WBI ("pragma Ada_95;"); 2274 2275 -- If we are operating in Restrictions (No_Exception_Handlers) mode, 2276 -- then we need to make sure that the binder program is compiled with 2277 -- the same restriction, so that no exception tables are generated. 2278 2279 if Cumulative_Restrictions.Set (No_Exception_Handlers) then 2280 WBI ("pragma Restrictions (No_Exception_Handlers);"); 2281 end if; 2282 2283 -- Same processing for Restrictions (No_Exception_Propagation) 2284 2285 if Cumulative_Restrictions.Set (No_Exception_Propagation) then 2286 WBI ("pragma Restrictions (No_Exception_Propagation);"); 2287 end if; 2288 2289 -- Same processing for pragma No_Run_Time 2290 2291 if No_Run_Time_Mode then 2292 WBI ("pragma No_Run_Time;"); 2293 end if; 2294 2295 -- Generate with of System so we can reference System.Address 2296 2297 WBI ("with System;"); 2298 2299 -- Generate with of System.Initialize_Scalars if active 2300 2301 if Initialize_Scalars_Used then 2302 WBI ("with System.Scalar_Values;"); 2303 end if; 2304 2305 -- Generate withs of System.Secondary_Stack and System.Parameters to 2306 -- allow the generation of the default-sized secondary stack pool. 2307 2308 if Sec_Stack_Used then 2309 WBI ("with System.Parameters;"); 2310 WBI ("with System.Secondary_Stack;"); 2311 end if; 2312 2313 Resolve_Binder_Options (Elab_Order); 2314 2315 -- Generate standard with's 2316 2317 if not Suppress_Standard_Library_On_Target then 2318 if CodePeer_Mode then 2319 WBI ("with System.Standard_Library;"); 2320 end if; 2321 end if; 2322 2323 WBI ("package " & Ada_Main & " is"); 2324 2325 -- Main program case 2326 2327 if Bind_Main_Program then 2328 -- Generate argc/argv stuff unless suppressed 2329 2330 if Command_Line_Args_On_Target 2331 or not Configurable_Run_Time_On_Target 2332 then 2333 WBI (""); 2334 WBI (" gnat_argc : Integer;"); 2335 WBI (" gnat_argv : System.Address;"); 2336 WBI (" gnat_envp : System.Address;"); 2337 2338 -- If the standard library is not suppressed, these variables 2339 -- are in the run-time data area for easy run time access. 2340 2341 if not Suppress_Standard_Library_On_Target then 2342 WBI (""); 2343 WBI (" pragma Import (C, gnat_argc);"); 2344 WBI (" pragma Import (C, gnat_argv);"); 2345 WBI (" pragma Import (C, gnat_envp);"); 2346 end if; 2347 end if; 2348 2349 -- Define exit status. Again in normal mode, this is in the run-time 2350 -- library, and is initialized there, but in the configurable 2351 -- run-time case, the variable is declared and initialized in this 2352 -- file. 2353 2354 WBI (""); 2355 2356 if Configurable_Run_Time_Mode then 2357 if Exit_Status_Supported_On_Target then 2358 WBI (" gnat_exit_status : Integer := 0;"); 2359 end if; 2360 2361 else 2362 WBI (" gnat_exit_status : Integer;"); 2363 WBI (" pragma Import (C, gnat_exit_status);"); 2364 end if; 2365 2366 -- Generate the GNAT_Version and Ada_Main_Program_Name info only for 2367 -- the main program. Otherwise, it can lead under some circumstances 2368 -- to a symbol duplication during the link (for instance when a C 2369 -- program uses two Ada libraries). Also zero terminate the string 2370 -- so that its end can be found reliably at run time. 2371 2372 if not Minimal_Binder then 2373 WBI (""); 2374 WBI (" GNAT_Version : constant String :="); 2375 WBI (" """ & Ver_Prefix & 2376 Gnat_Version_String & 2377 """ & ASCII.NUL;"); 2378 WBI (" pragma Export (C, GNAT_Version, ""__gnat_version"");"); 2379 2380 WBI (""); 2381 Set_String (" Ada_Main_Program_Name : constant String := """); 2382 Get_Name_String (Units.Table (First_Unit_Entry).Uname); 2383 2384 Set_Main_Program_Name; 2385 Set_String (""" & ASCII.NUL;"); 2386 2387 Write_Statement_Buffer; 2388 2389 WBI 2390 (" pragma Export (C, Ada_Main_Program_Name, " & 2391 """__gnat_ada_main_program_name"");"); 2392 end if; 2393 end if; 2394 2395 WBI (""); 2396 WBI (" procedure " & Ada_Init_Name.all & ";"); 2397 WBI (" pragma Export (C, " & Ada_Init_Name.all & ", """ & 2398 Ada_Init_Name.all & """);"); 2399 2400 -- If -a has been specified use pragma Linker_Constructor for the init 2401 -- procedure and pragma Linker_Destructor for the final procedure. 2402 2403 if Use_Pragma_Linker_Constructor then 2404 WBI (" pragma Linker_Constructor (" & Ada_Init_Name.all & ");"); 2405 end if; 2406 2407 if not Cumulative_Restrictions.Set (No_Finalization) then 2408 WBI (""); 2409 WBI (" procedure " & Ada_Final_Name.all & ";"); 2410 WBI (" pragma Export (C, " & Ada_Final_Name.all & ", """ & 2411 Ada_Final_Name.all & """);"); 2412 2413 if Use_Pragma_Linker_Constructor then 2414 WBI (" pragma Linker_Destructor (" & Ada_Final_Name.all & ");"); 2415 end if; 2416 end if; 2417 2418 if Bind_Main_Program then 2419 2420 WBI (""); 2421 2422 if Exit_Status_Supported_On_Target then 2423 Set_String (" function "); 2424 else 2425 Set_String (" procedure "); 2426 end if; 2427 2428 Set_String (Get_Main_Name); 2429 2430 -- Generate argument list if present 2431 2432 if Command_Line_Args_On_Target then 2433 Write_Statement_Buffer; 2434 WBI (" (argc : Integer;"); 2435 WBI (" argv : System.Address;"); 2436 Set_String 2437 (" envp : System.Address)"); 2438 2439 if Exit_Status_Supported_On_Target then 2440 Write_Statement_Buffer; 2441 WBI (" return Integer;"); 2442 else 2443 Write_Statement_Buffer (";"); 2444 end if; 2445 2446 else 2447 if Exit_Status_Supported_On_Target then 2448 Write_Statement_Buffer (" return Integer;"); 2449 else 2450 Write_Statement_Buffer (";"); 2451 end if; 2452 end if; 2453 2454 WBI (" pragma Export (C, " & Get_Main_Name & ", """ & 2455 Get_Main_Name & """);"); 2456 end if; 2457 2458 -- Generate version numbers for units, only if needed. Be very safe on 2459 -- the condition. 2460 2461 if not Configurable_Run_Time_On_Target 2462 or else System_Version_Control_Used 2463 or else not Bind_Main_Program 2464 then 2465 Gen_Versions; 2466 end if; 2467 2468 Gen_Elab_Order (Elab_Order); 2469 2470 -- Spec is complete 2471 2472 WBI (""); 2473 WBI ("end " & Ada_Main & ";"); 2474 Close_Binder_Output; 2475 2476 -- Prepare to write body 2477 2478 Create_Binder_Output (Filename, 'b', Bfileb); 2479 2480 -- We always compile the binder file in Ada 95 mode so that we properly 2481 -- handle use of Ada 2005 keywords as identifiers in Ada 95 mode. None 2482 -- of the Ada 2005/2012 constructs are needed by the binder file. 2483 2484 WBI ("pragma Warnings (Off);"); 2485 WBI ("pragma Ada_95;"); 2486 2487 -- Output Source_File_Name pragmas which look like 2488 2489 -- pragma Source_File_Name (Ada_Main, Spec_File_Name => "sss"); 2490 -- pragma Source_File_Name (Ada_Main, Body_File_Name => "bbb"); 2491 2492 -- where sss/bbb are the spec/body file names respectively 2493 2494 Get_Name_String (Bfiles); 2495 Name_Buffer (Name_Len + 1 .. Name_Len + 3) := """);"; 2496 2497 WBI ("pragma Source_File_Name (" & 2498 Ada_Main & 2499 ", Spec_File_Name => """ & 2500 Name_Buffer (1 .. Name_Len + 3)); 2501 2502 Get_Name_String (Bfileb); 2503 Name_Buffer (Name_Len + 1 .. Name_Len + 3) := """);"; 2504 2505 WBI ("pragma Source_File_Name (" & 2506 Ada_Main & 2507 ", Body_File_Name => """ & 2508 Name_Buffer (1 .. Name_Len + 3)); 2509 2510 -- Generate pragma Suppress (Overflow_Check). This is needed for recent 2511 -- versions of the compiler which have overflow checks on by default. 2512 -- We do not want overflow checking enabled for the increments of the 2513 -- elaboration variables (since this can cause an unwanted reference to 2514 -- the last chance exception handler for limited run-times). 2515 2516 WBI ("pragma Suppress (Overflow_Check);"); 2517 2518 -- Generate with of System.Restrictions to initialize 2519 -- Run_Time_Restrictions. 2520 2521 if System_Restrictions_Used 2522 and not Suppress_Standard_Library_On_Target 2523 then 2524 WBI (""); 2525 WBI ("with System.Restrictions;"); 2526 end if; 2527 2528 -- Generate with of Ada.Exceptions if needs library finalization 2529 2530 if Needs_Library_Finalization then 2531 WBI ("with Ada.Exceptions;"); 2532 end if; 2533 2534 -- Generate with of System.Elaboration_Allocators if the restriction 2535 -- No_Standard_Allocators_After_Elaboration was present. 2536 2537 if Cumulative_Restrictions.Set 2538 (No_Standard_Allocators_After_Elaboration) 2539 then 2540 WBI ("with System.Elaboration_Allocators;"); 2541 end if; 2542 2543 -- Generate start of package body 2544 2545 WBI (""); 2546 WBI ("package body " & Ada_Main & " is"); 2547 WBI (""); 2548 2549 -- Generate externals for elaboration entities 2550 2551 Gen_Elab_Externals (Elab_Order); 2552 2553 -- Generate default-sized secondary stacks pool. At least one stack is 2554 -- created and assigned to the environment task if secondary stacks are 2555 -- used by the program. 2556 2557 if Sec_Stack_Used then 2558 Set_String (" Sec_Default_Sized_Stacks"); 2559 Set_String (" : array (1 .. "); 2560 Set_Int (Num_Sec_Stacks); 2561 Set_String (") of aliased System.Secondary_Stack.SS_Stack ("); 2562 2563 if Opt.Default_Sec_Stack_Size /= No_Stack_Size then 2564 Set_Int (Opt.Default_Sec_Stack_Size); 2565 else 2566 Set_String ("System.Parameters.Runtime_Default_Sec_Stack_Size"); 2567 end if; 2568 2569 Set_String (");"); 2570 Write_Statement_Buffer; 2571 WBI (""); 2572 end if; 2573 2574 -- Generate reference 2575 2576 if not CodePeer_Mode then 2577 if not Suppress_Standard_Library_On_Target then 2578 2579 -- Generate Priority_Specific_Dispatching pragma string 2580 2581 Set_String 2582 (" Local_Priority_Specific_Dispatching : " & 2583 "constant String := """); 2584 2585 for J in 0 .. PSD_Pragma_Settings.Last loop 2586 Set_Char (PSD_Pragma_Settings.Table (J)); 2587 end loop; 2588 2589 Set_String (""";"); 2590 Write_Statement_Buffer; 2591 2592 -- Generate Interrupt_State pragma string 2593 2594 Set_String (" Local_Interrupt_States : constant String := """); 2595 2596 for J in 0 .. IS_Pragma_Settings.Last loop 2597 Set_Char (IS_Pragma_Settings.Table (J)); 2598 end loop; 2599 2600 Set_String (""";"); 2601 Write_Statement_Buffer; 2602 WBI (""); 2603 end if; 2604 2605 if not Suppress_Standard_Library_On_Target then 2606 2607 -- The B.1(39) implementation advice says that the adainit and 2608 -- adafinal routines should be idempotent. Generate a flag to 2609 -- ensure that. This is not needed if we are suppressing the 2610 -- standard library since it would never be referenced. 2611 2612 WBI (" Is_Elaborated : Boolean := False;"); 2613 2614 -- Generate bind environment string 2615 2616 Gen_Bind_Env_String; 2617 end if; 2618 2619 WBI (""); 2620 end if; 2621 2622 -- Generate the adafinal routine unless there is no finalization to do 2623 2624 if not Cumulative_Restrictions.Set (No_Finalization) then 2625 if Needs_Library_Finalization then 2626 Gen_Finalize_Library (Elab_Order); 2627 end if; 2628 2629 Gen_Adafinal; 2630 end if; 2631 2632 Gen_Adainit (Elab_Order); 2633 2634 if Bind_Main_Program then 2635 Gen_Main; 2636 end if; 2637 2638 -- Output object file list and the Ada body is complete 2639 2640 Gen_Object_Files_Options (Elab_Order); 2641 2642 WBI (""); 2643 WBI ("end " & Ada_Main & ";"); 2644 2645 Close_Binder_Output; 2646 end Gen_Output_File_Ada; 2647 2648 ---------------------- 2649 -- Gen_Restrictions -- 2650 ---------------------- 2651 2652 procedure Gen_Restrictions is 2653 Count : Integer; 2654 2655 begin 2656 if Suppress_Standard_Library_On_Target 2657 or not System_Restrictions_Used 2658 then 2659 return; 2660 end if; 2661 2662 WBI (" System.Restrictions.Run_Time_Restrictions :="); 2663 WBI (" (Set =>"); 2664 Set_String (" ("); 2665 2666 Count := 0; 2667 2668 for J in Cumulative_Restrictions.Set'Range loop 2669 Set_Boolean (Cumulative_Restrictions.Set (J)); 2670 Set_String (", "); 2671 Count := Count + 1; 2672 2673 if J /= Cumulative_Restrictions.Set'Last and then Count = 8 then 2674 Write_Statement_Buffer; 2675 Set_String (" "); 2676 Count := 0; 2677 end if; 2678 end loop; 2679 2680 Set_String_Replace ("),"); 2681 Write_Statement_Buffer; 2682 Set_String (" Value => ("); 2683 2684 for J in Cumulative_Restrictions.Value'Range loop 2685 Set_Int (Int (Cumulative_Restrictions.Value (J))); 2686 Set_String (", "); 2687 end loop; 2688 2689 Set_String_Replace ("),"); 2690 Write_Statement_Buffer; 2691 WBI (" Violated =>"); 2692 Set_String (" ("); 2693 Count := 0; 2694 2695 for J in Cumulative_Restrictions.Violated'Range loop 2696 Set_Boolean (Cumulative_Restrictions.Violated (J)); 2697 Set_String (", "); 2698 Count := Count + 1; 2699 2700 if J /= Cumulative_Restrictions.Set'Last and then Count = 8 then 2701 Write_Statement_Buffer; 2702 Set_String (" "); 2703 Count := 0; 2704 end if; 2705 end loop; 2706 2707 Set_String_Replace ("),"); 2708 Write_Statement_Buffer; 2709 Set_String (" Count => ("); 2710 2711 for J in Cumulative_Restrictions.Count'Range loop 2712 Set_Int (Int (Cumulative_Restrictions.Count (J))); 2713 Set_String (", "); 2714 end loop; 2715 2716 Set_String_Replace ("),"); 2717 Write_Statement_Buffer; 2718 Set_String (" Unknown => ("); 2719 2720 for J in Cumulative_Restrictions.Unknown'Range loop 2721 Set_Boolean (Cumulative_Restrictions.Unknown (J)); 2722 Set_String (", "); 2723 end loop; 2724 2725 Set_String_Replace ("))"); 2726 Set_String (";"); 2727 Write_Statement_Buffer; 2728 end Gen_Restrictions; 2729 2730 ------------------ 2731 -- Gen_Versions -- 2732 ------------------ 2733 2734 -- This routine generates lines such as: 2735 2736 -- unnnnn : constant Integer := 16#hhhhhhhh#; 2737 -- pragma Export (C, unnnnn, unam); 2738 2739 -- for each unit, where unam is the unit name suffixed by either B or S for 2740 -- body or spec, with dots replaced by double underscores, and hhhhhhhh is 2741 -- the version number, and nnnnn is a 5-digits serial number. 2742 2743 procedure Gen_Versions is 2744 Ubuf : String (1 .. 6) := "u00000"; 2745 2746 procedure Increment_Ubuf; 2747 -- Little procedure to increment the serial number 2748 2749 -------------------- 2750 -- Increment_Ubuf -- 2751 -------------------- 2752 2753 procedure Increment_Ubuf is 2754 begin 2755 for J in reverse Ubuf'Range loop 2756 Ubuf (J) := Character'Succ (Ubuf (J)); 2757 exit when Ubuf (J) <= '9'; 2758 Ubuf (J) := '0'; 2759 end loop; 2760 end Increment_Ubuf; 2761 2762 -- Start of processing for Gen_Versions 2763 2764 begin 2765 WBI (""); 2766 2767 WBI (" type Version_32 is mod 2 ** 32;"); 2768 for U in Units.First .. Units.Last loop 2769 if not Units.Table (U).SAL_Interface 2770 and then (not Bind_For_Library 2771 or else Units.Table (U).Directly_Scanned) 2772 then 2773 Increment_Ubuf; 2774 WBI (" " & Ubuf & " : constant Version_32 := 16#" & 2775 Units.Table (U).Version & "#;"); 2776 Set_String (" pragma Export (C, "); 2777 Set_String (Ubuf); 2778 Set_String (", """); 2779 2780 Get_Name_String (Units.Table (U).Uname); 2781 2782 for K in 1 .. Name_Len loop 2783 if Name_Buffer (K) = '.' then 2784 Set_Char ('_'); 2785 Set_Char ('_'); 2786 2787 elsif Name_Buffer (K) = '%' then 2788 exit; 2789 2790 else 2791 Set_Char (Name_Buffer (K)); 2792 end if; 2793 end loop; 2794 2795 if Name_Buffer (Name_Len) = 's' then 2796 Set_Char ('S'); 2797 else 2798 Set_Char ('B'); 2799 end if; 2800 2801 Set_String (""");"); 2802 Write_Statement_Buffer; 2803 end if; 2804 end loop; 2805 end Gen_Versions; 2806 2807 ------------------------ 2808 -- Get_Main_Unit_Name -- 2809 ------------------------ 2810 2811 function Get_Main_Unit_Name (S : String) return String is 2812 Result : String := S; 2813 2814 begin 2815 for J in S'Range loop 2816 if Result (J) = '.' then 2817 Result (J) := '_'; 2818 end if; 2819 end loop; 2820 2821 return Result; 2822 end Get_Main_Unit_Name; 2823 2824 ----------------------- 2825 -- Get_Ada_Main_Name -- 2826 ----------------------- 2827 2828 function Get_Ada_Main_Name return String is 2829 Suffix : constant String := "_00"; 2830 Name : String (1 .. Opt.Ada_Main_Name.all'Length + Suffix'Length) := 2831 Opt.Ada_Main_Name.all & Suffix; 2832 Nlen : Natural; 2833 2834 begin 2835 -- For CodePeer, we want reproducible names (independent of other mains 2836 -- that may or may not be present) that don't collide when analyzing 2837 -- multiple mains and which are easily recognizable as "ada_main" names. 2838 2839 if CodePeer_Mode then 2840 Get_Name_String (Units.Table (First_Unit_Entry).Uname); 2841 2842 return 2843 "ada_main_for_" & 2844 Get_Main_Unit_Name (Name_Buffer (1 .. Name_Len - 2)); 2845 end if; 2846 2847 -- This loop tries the following possibilities in order 2848 -- <Ada_Main> 2849 -- <Ada_Main>_01 2850 -- <Ada_Main>_02 2851 -- .. 2852 -- <Ada_Main>_99 2853 -- where <Ada_Main> is equal to Opt.Ada_Main_Name. By default, 2854 -- it is set to 'ada_main'. 2855 2856 for J in 0 .. 99 loop 2857 if J = 0 then 2858 Nlen := Name'Length - Suffix'Length; 2859 else 2860 Nlen := Name'Length; 2861 Name (Name'Last) := Character'Val (J mod 10 + Character'Pos ('0')); 2862 Name (Name'Last - 1) := 2863 Character'Val (J / 10 + Character'Pos ('0')); 2864 end if; 2865 2866 for K in ALIs.First .. ALIs.Last loop 2867 for L in ALIs.Table (K).First_Unit .. ALIs.Table (K).Last_Unit loop 2868 2869 -- Get unit name, removing %b or %e at end 2870 2871 Get_Name_String (Units.Table (L).Uname); 2872 Name_Len := Name_Len - 2; 2873 2874 if Name_Buffer (1 .. Name_Len) = Name (1 .. Nlen) then 2875 goto Continue; 2876 end if; 2877 end loop; 2878 end loop; 2879 2880 return Name (1 .. Nlen); 2881 2882 <<Continue>> 2883 null; 2884 end loop; 2885 2886 -- If we fall through, just use a peculiar unlikely name 2887 2888 return ("Qwertyuiop"); 2889 end Get_Ada_Main_Name; 2890 2891 ------------------- 2892 -- Get_Main_Name -- 2893 ------------------- 2894 2895 function Get_Main_Name return String is 2896 begin 2897 -- Explicit name given with -M switch 2898 2899 if Bind_Alternate_Main_Name then 2900 return Alternate_Main_Name.all; 2901 2902 -- Case of main program name to be used directly 2903 2904 elsif Use_Ada_Main_Program_Name_On_Target then 2905 2906 -- Get main program name 2907 2908 Get_Name_String (Units.Table (First_Unit_Entry).Uname); 2909 2910 -- If this is a child name, return only the name of the child, since 2911 -- we can't have dots in a nested program name. Note that we do not 2912 -- include the %b at the end of the unit name. 2913 2914 for J in reverse 1 .. Name_Len - 2 loop 2915 if J = 1 or else Name_Buffer (J - 1) = '.' then 2916 return Name_Buffer (J .. Name_Len - 2); 2917 end if; 2918 end loop; 2919 2920 raise Program_Error; -- impossible exit 2921 2922 -- Case where "main" is to be used as default 2923 2924 else 2925 return "main"; 2926 end if; 2927 end Get_Main_Name; 2928 2929 --------------------- 2930 -- Get_WC_Encoding -- 2931 --------------------- 2932 2933 function Get_WC_Encoding return Character is 2934 begin 2935 -- If encoding method specified by -W switch, then return it 2936 2937 if Wide_Character_Encoding_Method_Specified then 2938 return WC_Encoding_Letters (Wide_Character_Encoding_Method); 2939 2940 -- If no main program, and not specified, set brackets, we really have 2941 -- no better choice. If some other encoding is required when there is 2942 -- no main, it must be set explicitly using -Wx. 2943 2944 -- Note: if the ALI file always passed the wide character encoding of 2945 -- every file, then we could use the encoding of the initial specified 2946 -- file, but this information is passed only for potential main 2947 -- programs. We could fix this sometime, but it is a very minor point 2948 -- (wide character default encoding for [Wide_[Wide_]]Text_IO when there 2949 -- is no main program). 2950 2951 elsif No_Main_Subprogram then 2952 return 'b'; 2953 2954 -- Otherwise if there is a main program, take encoding from it 2955 2956 else 2957 return ALIs.Table (ALIs.First).WC_Encoding; 2958 end if; 2959 end Get_WC_Encoding; 2960 2961 ------------------- 2962 -- Has_Finalizer -- 2963 ------------------- 2964 2965 function Has_Finalizer (Elab_Order : Unit_Id_Array) return Boolean is 2966 U : Unit_Record; 2967 Unum : Unit_Id; 2968 2969 begin 2970 for E in reverse Elab_Order'Range loop 2971 Unum := Elab_Order (E); 2972 U := Units.Table (Unum); 2973 2974 -- We are only interested in non-generic packages 2975 2976 if U.Unit_Kind = 'p' 2977 and then U.Has_Finalizer 2978 and then not U.Is_Generic 2979 and then not U.No_Elab 2980 then 2981 return True; 2982 end if; 2983 end loop; 2984 2985 return False; 2986 end Has_Finalizer; 2987 2988 ---------- 2989 -- Hash -- 2990 ---------- 2991 2992 function Hash (Nam : Name_Id) return Header_Num is 2993 begin 2994 return Int (Nam - Names_Low_Bound) rem Header_Num'Last; 2995 end Hash; 2996 2997 ---------------------- 2998 -- Lt_Linker_Option -- 2999 ---------------------- 3000 3001 function Lt_Linker_Option (Op1 : Natural; Op2 : Natural) return Boolean is 3002 begin 3003 -- Sort internal files last 3004 3005 if Linker_Options.Table (Op1).Internal_File 3006 /= 3007 Linker_Options.Table (Op2).Internal_File 3008 then 3009 -- Note: following test uses False < True 3010 3011 return Linker_Options.Table (Op1).Internal_File 3012 < 3013 Linker_Options.Table (Op2).Internal_File; 3014 3015 -- If both internal or both non-internal, sort according to the 3016 -- elaboration position. A unit that is elaborated later should come 3017 -- earlier in the linker options list. 3018 3019 else 3020 return Units.Table (Linker_Options.Table (Op1).Unit).Elab_Position 3021 > 3022 Units.Table (Linker_Options.Table (Op2).Unit).Elab_Position; 3023 end if; 3024 end Lt_Linker_Option; 3025 3026 ------------------------ 3027 -- Move_Linker_Option -- 3028 ------------------------ 3029 3030 procedure Move_Linker_Option (From : Natural; To : Natural) is 3031 begin 3032 Linker_Options.Table (To) := Linker_Options.Table (From); 3033 end Move_Linker_Option; 3034 3035 ---------------------------- 3036 -- Resolve_Binder_Options -- 3037 ---------------------------- 3038 3039 procedure Resolve_Binder_Options (Elab_Order : Unit_Id_Array) is 3040 procedure Check_Package (Var : in out Boolean; Name : String); 3041 -- Set Var to true iff the current identifier in Namet is Name. Do 3042 -- nothing if it doesn't match. This procedure is just a helper to 3043 -- avoid explicitly dealing with length. 3044 3045 ------------------- 3046 -- Check_Package -- 3047 ------------------- 3048 3049 procedure Check_Package (Var : in out Boolean; Name : String) is 3050 begin 3051 if Name_Len = Name'Length 3052 and then Name_Buffer (1 .. Name_Len) = Name 3053 then 3054 Var := True; 3055 end if; 3056 end Check_Package; 3057 3058 -- Start of processing for Resolve_Binder_Options 3059 3060 begin 3061 for E in Elab_Order'Range loop 3062 Get_Name_String (Units.Table (Elab_Order (E)).Uname); 3063 3064 -- This is not a perfect approach, but is the current protocol 3065 -- between the run-time and the binder to indicate that tasking is 3066 -- used: System.OS_Interface should always be used by any tasking 3067 -- application. 3068 3069 Check_Package (With_GNARL, "system.os_interface%s"); 3070 3071 -- Ditto for the use of restricted tasking 3072 3073 Check_Package 3074 (System_Tasking_Restricted_Stages_Used, 3075 "system.tasking.restricted.stages%s"); 3076 3077 -- Ditto for the use of interrupts 3078 3079 Check_Package (System_Interrupts_Used, "system.interrupts%s"); 3080 3081 -- Ditto for the use of dispatching domains 3082 3083 Check_Package 3084 (Dispatching_Domains_Used, 3085 "system.multiprocessors.dispatching_domains%s"); 3086 3087 -- Ditto for the use of restrictions 3088 3089 Check_Package (System_Restrictions_Used, "system.restrictions%s"); 3090 3091 -- Ditto for the use of System.Secondary_Stack 3092 3093 Check_Package 3094 (System_Secondary_Stack_Package_In_Closure, 3095 "system.secondary_stack%s"); 3096 3097 -- Ditto for use of an SMP bareboard runtime 3098 3099 Check_Package (System_BB_CPU_Primitives_Multiprocessors_Used, 3100 "system.bb.cpu_primitives.multiprocessors%s"); 3101 3102 -- Ditto for System.Version_Control, which is used for Version and 3103 -- Body_Version attributes. 3104 3105 Check_Package (System_Version_Control_Used, 3106 "system.version_control%s"); 3107 end loop; 3108 end Resolve_Binder_Options; 3109 3110 ------------------ 3111 -- Set_Bind_Env -- 3112 ------------------ 3113 3114 procedure Set_Bind_Env (Key, Value : String) is 3115 begin 3116 -- The lengths of Key and Value are stored as single bytes 3117 3118 if Key'Length > 255 then 3119 Osint.Fail ("bind environment key """ & Key & """ too long"); 3120 end if; 3121 3122 if Value'Length > 255 then 3123 Osint.Fail ("bind environment value """ & Value & """ too long"); 3124 end if; 3125 3126 Bind_Environment.Set (Name_Find (Key), Name_Find (Value)); 3127 end Set_Bind_Env; 3128 3129 ----------------- 3130 -- Set_Boolean -- 3131 ----------------- 3132 3133 procedure Set_Boolean (B : Boolean) is 3134 False_Str : constant String := "False"; 3135 True_Str : constant String := "True"; 3136 3137 begin 3138 if B then 3139 Statement_Buffer (Stm_Last + 1 .. Stm_Last + True_Str'Length) := 3140 True_Str; 3141 Stm_Last := Stm_Last + True_Str'Length; 3142 else 3143 Statement_Buffer (Stm_Last + 1 .. Stm_Last + False_Str'Length) := 3144 False_Str; 3145 Stm_Last := Stm_Last + False_Str'Length; 3146 end if; 3147 end Set_Boolean; 3148 3149 -------------- 3150 -- Set_Char -- 3151 -------------- 3152 3153 procedure Set_Char (C : Character) is 3154 begin 3155 Stm_Last := Stm_Last + 1; 3156 Statement_Buffer (Stm_Last) := C; 3157 end Set_Char; 3158 3159 ------------- 3160 -- Set_Int -- 3161 ------------- 3162 3163 procedure Set_Int (N : Int) is 3164 begin 3165 if N < 0 then 3166 Set_String ("-"); 3167 Set_Int (-N); 3168 3169 else 3170 if N > 9 then 3171 Set_Int (N / 10); 3172 end if; 3173 3174 Stm_Last := Stm_Last + 1; 3175 Statement_Buffer (Stm_Last) := 3176 Character'Val (N mod 10 + Character'Pos ('0')); 3177 end if; 3178 end Set_Int; 3179 3180 ------------------------- 3181 -- Set_IS_Pragma_Table -- 3182 ------------------------- 3183 3184 procedure Set_IS_Pragma_Table is 3185 begin 3186 for F in ALIs.First .. ALIs.Last loop 3187 for K in ALIs.Table (F).First_Interrupt_State .. 3188 ALIs.Table (F).Last_Interrupt_State 3189 loop 3190 declare 3191 Inum : constant Int := 3192 Interrupt_States.Table (K).Interrupt_Id; 3193 Stat : constant Character := 3194 Interrupt_States.Table (K).Interrupt_State; 3195 3196 begin 3197 while IS_Pragma_Settings.Last < Inum loop 3198 IS_Pragma_Settings.Append ('n'); 3199 end loop; 3200 3201 IS_Pragma_Settings.Table (Inum) := Stat; 3202 end; 3203 end loop; 3204 end loop; 3205 end Set_IS_Pragma_Table; 3206 3207 --------------------------- 3208 -- Set_Main_Program_Name -- 3209 --------------------------- 3210 3211 procedure Set_Main_Program_Name is 3212 begin 3213 -- Note that name has %b on the end which we ignore 3214 3215 -- First we output the initial _ada_ since we know that the main program 3216 -- is a library level subprogram. 3217 3218 Set_String ("_ada_"); 3219 3220 -- Copy name, changing dots to double underscores 3221 3222 for J in 1 .. Name_Len - 2 loop 3223 if Name_Buffer (J) = '.' then 3224 Set_String ("__"); 3225 else 3226 Set_Char (Name_Buffer (J)); 3227 end if; 3228 end loop; 3229 end Set_Main_Program_Name; 3230 3231 --------------------- 3232 -- Set_Name_Buffer -- 3233 --------------------- 3234 3235 procedure Set_Name_Buffer is 3236 begin 3237 for J in 1 .. Name_Len loop 3238 Set_Char (Name_Buffer (J)); 3239 end loop; 3240 end Set_Name_Buffer; 3241 3242 ------------------------- 3243 -- Set_PSD_Pragma_Table -- 3244 ------------------------- 3245 3246 procedure Set_PSD_Pragma_Table is 3247 begin 3248 for F in ALIs.First .. ALIs.Last loop 3249 for K in ALIs.Table (F).First_Specific_Dispatching .. 3250 ALIs.Table (F).Last_Specific_Dispatching 3251 loop 3252 declare 3253 DTK : Specific_Dispatching_Record 3254 renames Specific_Dispatching.Table (K); 3255 3256 begin 3257 while PSD_Pragma_Settings.Last < DTK.Last_Priority loop 3258 PSD_Pragma_Settings.Append ('F'); 3259 end loop; 3260 3261 for Prio in DTK.First_Priority .. DTK.Last_Priority loop 3262 PSD_Pragma_Settings.Table (Prio) := DTK.Dispatching_Policy; 3263 end loop; 3264 end; 3265 end loop; 3266 end loop; 3267 end Set_PSD_Pragma_Table; 3268 3269 ---------------- 3270 -- Set_String -- 3271 ---------------- 3272 3273 procedure Set_String (S : String) is 3274 begin 3275 Statement_Buffer (Stm_Last + 1 .. Stm_Last + S'Length) := S; 3276 Stm_Last := Stm_Last + S'Length; 3277 end Set_String; 3278 3279 ------------------------ 3280 -- Set_String_Replace -- 3281 ------------------------ 3282 3283 procedure Set_String_Replace (S : String) is 3284 begin 3285 Statement_Buffer (Stm_Last - S'Length + 1 .. Stm_Last) := S; 3286 end Set_String_Replace; 3287 3288 ------------------- 3289 -- Set_Unit_Name -- 3290 ------------------- 3291 3292 procedure Set_Unit_Name is 3293 begin 3294 for J in 1 .. Name_Len - 2 loop 3295 if Name_Buffer (J) = '.' then 3296 Set_String ("__"); 3297 else 3298 Set_Char (Name_Buffer (J)); 3299 end if; 3300 end loop; 3301 end Set_Unit_Name; 3302 3303 --------------------- 3304 -- Set_Unit_Number -- 3305 --------------------- 3306 3307 procedure Set_Unit_Number (U : Unit_Id) is 3308 Num_Units : constant Nat := Nat (Units.Last) - Nat (Unit_Id'First); 3309 Unum : constant Nat := Nat (U) - Nat (Unit_Id'First); 3310 3311 begin 3312 if Num_Units >= 10 and then Unum < 10 then 3313 Set_Char ('0'); 3314 end if; 3315 3316 if Num_Units >= 100 and then Unum < 100 then 3317 Set_Char ('0'); 3318 end if; 3319 3320 Set_Int (Unum); 3321 end Set_Unit_Number; 3322 3323 --------------------- 3324 -- Write_Bind_Line -- 3325 --------------------- 3326 3327 procedure Write_Bind_Line (S : String) is 3328 begin 3329 -- Need to strip trailing LF from S 3330 3331 WBI (S (S'First .. S'Last - 1)); 3332 end Write_Bind_Line; 3333 3334 ---------------------------- 3335 -- Write_Statement_Buffer -- 3336 ---------------------------- 3337 3338 procedure Write_Statement_Buffer is 3339 begin 3340 WBI (Statement_Buffer (1 .. Stm_Last)); 3341 Stm_Last := 0; 3342 end Write_Statement_Buffer; 3343 3344 procedure Write_Statement_Buffer (S : String) is 3345 begin 3346 Set_String (S); 3347 Write_Statement_Buffer; 3348 end Write_Statement_Buffer; 3349 3350end Bindgen; 3351