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