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) 1992-2021, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNAT; see file COPYING3. If not, go to -- 19-- http://www.gnu.org/licenses for a complete copy of the license. -- 20-- -- 21-- GNAT was originally developed by the GNAT team at New York University. -- 22-- Extensive contributions were provided by Ada Core Technologies Inc. -- 23-- -- 24------------------------------------------------------------------------------ 25 26with Casing; use Casing; 27with Fname; use Fname; 28with Gnatvsn; use Gnatvsn; 29with Hostparm; 30with Namet; use Namet; 31with Opt; use Opt; 32with Osint; use Osint; 33with Osint.B; use Osint.B; 34with Output; use Output; 35with Rident; use Rident; 36with Table; 37with Targparm; use Targparm; 38with Types; use Types; 39 40with System.OS_Lib; 41with System.WCh_Con; use System.WCh_Con; 42 43with GNAT.Heap_Sort_A; use GNAT.Heap_Sort_A; 44with GNAT.HTable; 45 46package body Bindgen is 47 Statement_Buffer : String (1 .. 1000); 48 -- Buffer used for constructing output statements 49 50 Stm_Last : Natural := 0; 51 -- Stm_Last location in Statement_Buffer currently set 52 53 With_GNARL : Boolean := False; 54 -- Flag which indicates whether the program uses the GNARL library 55 -- (presence of the unit System.OS_Interface) 56 57 Num_Elab_Calls : Nat := 0; 58 -- Number of generated calls to elaboration routines 59 60 Num_Primary_Stacks : Int := 0; 61 -- Number of default-sized primary stacks the binder needs to allocate for 62 -- task objects declared in the program. 63 64 Num_Sec_Stacks : Int := 0; 65 -- Number of default-sized primary stacks the binder needs to allocate for 66 -- task objects declared in the program. 67 68 System_Restrictions_Used : Boolean := False; 69 -- Flag indicating whether the unit System.Restrictions is in the closure 70 -- of the partition. This is set by Resolve_Binder_Options, and is used 71 -- to determine whether or not to initialize the restrictions information 72 -- in the body of the binder generated file (we do not want to do this 73 -- unconditionally, since it drags in the System.Restrictions unit 74 -- unconditionally, which is unpleasand, especially for ZFP etc.) 75 76 Dispatching_Domains_Used : Boolean := False; 77 -- Flag indicating whether multiprocessor dispatching domains are used in 78 -- the closure of the partition. This is set by Resolve_Binder_Options, and 79 -- is used to call the routine to disallow the creation of new dispatching 80 -- domains just before calling the main procedure from the environment 81 -- task. 82 83 System_Secondary_Stack_Package_In_Closure : Boolean := False; 84 -- Flag indicating whether the unit System.Secondary_Stack is in the 85 -- closure of the partition. This is set by Resolve_Binder_Options, and 86 -- is used to initialize the package in cases where the run-time brings 87 -- in package but the secondary stack is not used. 88 89 System_Tasking_Restricted_Stages_Used : Boolean := False; 90 -- Flag indicating whether the unit System.Tasking.Restricted.Stages is in 91 -- the closure of the partition. This is set by Resolve_Binder_Options, 92 -- and it used to call a routine to active all the tasks at the end of 93 -- the elaboration when partition elaboration policy is sequential. 94 95 System_Interrupts_Used : Boolean := False; 96 -- Flag indicating whether the unit System.Interrups is in the closure of 97 -- the partition. This is set by Resolve_Binder_Options, and it used to 98 -- attach interrupt handlers at the end of the elaboration when partition 99 -- elaboration policy is sequential. 100 101 System_BB_CPU_Primitives_Multiprocessors_Used : Boolean := False; 102 -- Flag indicating whether unit System.BB.CPU_Primitives.Multiprocessors 103 -- is in the closure of the partition. This is set by procedure 104 -- Resolve_Binder_Options, and it is used to call a procedure that starts 105 -- slave processors. 106 107 System_Version_Control_Used : Boolean := False; 108 -- Flag indicating whether unit System.Version_Control is in the closure. 109 -- This unit is implicitly withed by the compiler when Version or 110 -- Body_Version attributes are used. If the package is not in the closure, 111 -- the version definitions can be removed. 112 113 Lib_Final_Built : Boolean := False; 114 -- Flag indicating whether the finalize_library rountine has been built 115 116 Bind_Env_String_Built : Boolean := False; 117 -- Flag indicating whether a bind environment string has been built 118 119 CodePeer_Wrapper_Name : constant String := "call_main_subprogram"; 120 -- For CodePeer, introduce a wrapper subprogram which calls the 121 -- user-defined main subprogram. 122 123 ---------------------------------- 124 -- Interface_State Pragma Table -- 125 ---------------------------------- 126 127 -- This table assembles the interface state pragma information from 128 -- all the units in the partition. Note that Bcheck has already checked 129 -- that the information is consistent across units. The entries 130 -- in this table are n/u/r/s for not set/user/runtime/system. 131 132 package IS_Pragma_Settings is new Table.Table 133 (Table_Component_Type => Character, 134 Table_Index_Type => Int, 135 Table_Low_Bound => 0, 136 Table_Initial => 100, 137 Table_Increment => 200, 138 Table_Name => "IS_Pragma_Settings"); 139 140 -- This table assembles the Priority_Specific_Dispatching pragma 141 -- information from all the units in the partition. Note that Bcheck has 142 -- already checked that the information is consistent across units. 143 -- The entries in this table are the upper case first character of the 144 -- policy name, e.g. 'F' for FIFO_Within_Priorities. 145 146 package PSD_Pragma_Settings is new Table.Table 147 (Table_Component_Type => Character, 148 Table_Index_Type => Int, 149 Table_Low_Bound => 0, 150 Table_Initial => 100, 151 Table_Increment => 200, 152 Table_Name => "PSD_Pragma_Settings"); 153 154 ---------------------------- 155 -- Bind_Environment Table -- 156 ---------------------------- 157 158 subtype Header_Num is Int range 0 .. 36; 159 160 function Hash (Nam : Name_Id) return Header_Num; 161 162 package Bind_Environment is new GNAT.HTable.Simple_HTable 163 (Header_Num => Header_Num, 164 Element => Name_Id, 165 No_Element => No_Name, 166 Key => Name_Id, 167 Hash => Hash, 168 Equal => "="); 169 170 ---------------------- 171 -- Run-Time Globals -- 172 ---------------------- 173 174 -- This section documents the global variables that are set from the 175 -- generated binder file. 176 177 -- Main_Priority : Integer; 178 -- Time_Slice_Value : Integer; 179 -- Heap_Size : Natural; 180 -- WC_Encoding : Character; 181 -- Locking_Policy : Character; 182 -- Queuing_Policy : Character; 183 -- Task_Dispatching_Policy : Character; 184 -- Priority_Specific_Dispatching : System.Address; 185 -- Num_Specific_Dispatching : Integer; 186 -- Restrictions : System.Address; 187 -- Interrupt_States : System.Address; 188 -- Num_Interrupt_States : Integer; 189 -- Unreserve_All_Interrupts : Integer; 190 -- Exception_Tracebacks : Integer; 191 -- Exception_Tracebacks_Symbolic : Integer; 192 -- Detect_Blocking : Integer; 193 -- Default_Stack_Size : Integer; 194 -- Default_Secondary_Stack_Size : System.Parameters.Size_Type; 195 -- Leap_Seconds_Support : Integer; 196 -- Main_CPU : Integer; 197 -- Default_Sized_SS_Pool : System.Address; 198 -- Binder_Sec_Stacks_Count : Natural; 199 -- XDR_Stream : Integer; 200 201 -- Main_Priority is the priority value set by pragma Priority in the main 202 -- program. If no such pragma is present, the value is -1. 203 204 -- Time_Slice_Value is the time slice value set by pragma Time_Slice in the 205 -- main program, or by the use of a -Tnnn parameter for the binder (if both 206 -- are present, the binder value overrides). The value is in milliseconds. 207 -- A value of zero indicates that time slicing should be suppressed. If no 208 -- pragma is present, and no -T switch was used, the value is -1. 209 210 -- WC_Encoding shows the wide character encoding method used for the main 211 -- program. This is one of the encoding letters defined in 212 -- System.WCh_Con.WC_Encoding_Letters. 213 214 -- Locking_Policy is a space if no locking policy was specified for the 215 -- partition. If a locking policy was specified, the value is the upper 216 -- case first character of the locking policy name, for example, 'C' for 217 -- Ceiling_Locking. 218 219 -- Queuing_Policy is a space if no queuing policy was specified for the 220 -- partition. If a queuing policy was specified, the value is the upper 221 -- case first character of the queuing policy name for example, 'F' for 222 -- FIFO_Queuing. 223 224 -- Task_Dispatching_Policy is a space if no task dispatching policy was 225 -- specified for the partition. If a task dispatching policy was specified, 226 -- the value is the upper case first character of the policy name, e.g. 'F' 227 -- for FIFO_Within_Priorities. 228 229 -- Priority_Specific_Dispatching is the address of a string used to store 230 -- the task dispatching policy specified for the different priorities in 231 -- the partition. The length of this string is determined by the last 232 -- priority for which such a pragma applies (the string will be a null 233 -- string if no specific dispatching policies were used). If pragma were 234 -- present, the entries apply to the priorities in sequence from the first 235 -- priority. The value stored is the upper case first character of the 236 -- policy name, or 'F' (for FIFO_Within_Priorities) as the default value 237 -- for those priority ranges not specified. 238 239 -- Num_Specific_Dispatching is length of the Priority_Specific_Dispatching 240 -- string. It will be set to zero if no Priority_Specific_Dispatching 241 -- pragmas are present. 242 243 -- Restrictions is the address of a null-terminated string specifying the 244 -- restrictions information for the partition. The format is identical to 245 -- that of the parameter string found on R lines in ali files (see Lib.Writ 246 -- spec in lib-writ.ads for full details). The difference is that in this 247 -- context the values are the cumulative ones for the entire partition. 248 249 -- Interrupt_States is the address of a string used to specify the 250 -- cumulative results of Interrupt_State pragmas used in the partition. 251 -- The length of this string is determined by the last interrupt for which 252 -- such a pragma is given (the string will be a null string if no pragmas 253 -- were used). If pragma were present the entries apply to the interrupts 254 -- in sequence from the first interrupt, and are set to one of four 255 -- possible settings: 'n' for not specified, 'u' for user, 'r' for run 256 -- time, 's' for system, see description of Interrupt_State pragma for 257 -- further details. 258 259 -- Num_Interrupt_States is the length of the Interrupt_States string. It 260 -- will be set to zero if no Interrupt_State pragmas are present. 261 262 -- Unreserve_All_Interrupts is set to one if at least one unit in the 263 -- partition had a pragma Unreserve_All_Interrupts, and zero otherwise. 264 265 -- Exception_Tracebacks is set to one if the -Ea or -E parameter was 266 -- present in the bind and to zero otherwise. Note that on some targets 267 -- exception tracebacks are provided by default, so a value of zero for 268 -- this parameter does not necessarily mean no trace backs are available. 269 270 -- Exception_Tracebacks_Symbolic is set to one if the -Es parameter was 271 -- present in the bind and to zero otherwise. 272 273 -- Detect_Blocking indicates whether pragma Detect_Blocking is active or 274 -- not. A value of zero indicates that the pragma is not present, while a 275 -- value of 1 signals its presence in the partition. 276 277 -- Default_Stack_Size is the default stack size used when creating an Ada 278 -- task with no explicit Storage_Size clause. 279 280 -- Default_Secondary_Stack_Size is the default secondary stack size used 281 -- when creating an Ada task with no explicit Secondary_Stack_Size clause. 282 283 -- Leap_Seconds_Support denotes whether leap seconds have been enabled or 284 -- disabled. A value of zero indicates that leap seconds are turned "off", 285 -- while a value of one signifies "on" status. 286 287 -- Main_CPU is the processor set by pragma CPU in the main program. If no 288 -- such pragma is present, the value is -1. 289 290 -- Default_Sized_SS_Pool is set to the address of the default-sized 291 -- secondary stacks array generated by the binder. This pool of stacks is 292 -- generated when either the restriction No_Implicit_Heap_Allocations 293 -- or No_Implicit_Task_Allocations is active. 294 295 -- Binder_Sec_Stacks_Count is the number of generated secondary stacks in 296 -- the Default_Sized_SS_Pool. 297 298 -- XDR_Stream indicates whether streaming should be performed using the 299 -- XDR protocol. A value of one indicates that XDR streaming is enabled. 300 301 procedure WBI (Info : String) renames Osint.B.Write_Binder_Info; 302 -- Convenient shorthand used throughout 303 304 ----------------------- 305 -- Local Subprograms -- 306 ----------------------- 307 308 procedure Gen_Adainit (Elab_Order : Unit_Id_Array); 309 -- Generates the Adainit procedure 310 311 procedure Gen_Adafinal; 312 -- Generate the Adafinal procedure 313 314 procedure Gen_Bind_Env_String; 315 -- Generate the bind environment buffer 316 317 procedure Gen_CodePeer_Wrapper; 318 -- For CodePeer, generate wrapper which calls user-defined main subprogram 319 320 procedure Gen_Elab_Calls (Elab_Order : Unit_Id_Array); 321 -- Generate sequence of elaboration calls 322 323 procedure Gen_Elab_Externals (Elab_Order : Unit_Id_Array); 324 -- Generate sequence of external declarations for elaboration 325 326 procedure Gen_Elab_Order (Elab_Order : Unit_Id_Array); 327 -- Generate comments showing elaboration order chosen 328 329 procedure Gen_Finalize_Library (Elab_Order : Unit_Id_Array); 330 -- Generate a sequence of finalization calls to elaborated packages 331 332 procedure Gen_Main; 333 -- Generate procedure main 334 335 procedure Gen_Object_Files_Options (Elab_Order : Unit_Id_Array); 336 -- Output comments containing a list of the full names of the object 337 -- files to be linked and the list of linker options supplied by 338 -- Linker_Options pragmas in the source. 339 340 procedure Gen_Output_File_Ada 341 (Filename : String; 342 Elab_Order : Unit_Id_Array); 343 -- Generate Ada output file 344 345 procedure Gen_Restrictions; 346 -- Generate initialization of restrictions variable 347 348 procedure Gen_Versions; 349 -- Output series of definitions for unit versions 350 351 function Get_Ada_Main_Name return String; 352 -- This function is used for the Ada main output to compute a usable name 353 -- for the generated main program. The normal main program name is 354 -- Ada_Main, but this won't work if the user has a unit with this name. 355 -- This function tries Ada_Main first, and if there is such a clash, then 356 -- it tries Ada_Name_01, Ada_Name_02 ... Ada_Name_99 in sequence. 357 358 function Get_Main_Unit_Name (S : String) return String; 359 -- Return the main unit name corresponding to S by replacing '.' with '_' 360 361 function Get_Main_Name return String; 362 -- This function is used in the main output case to compute the correct 363 -- external main program. It is "main" by default, unless the flag 364 -- Use_Ada_Main_Program_Name_On_Target is set, in which case it is the name 365 -- of the Ada main name without the "_ada". This default can be overridden 366 -- explicitly using the -Mname binder switch. 367 368 function Get_WC_Encoding return Character; 369 -- Return wide character encoding method to set as WC_Encoding in output. 370 -- If -W has been used, returns the specified encoding, otherwise returns 371 -- the encoding method used for the main program source. If there is no 372 -- main program source (-z switch used), returns brackets ('b'). 373 374 function Has_Finalizer (Elab_Order : Unit_Id_Array) return Boolean; 375 -- Determine whether the current unit has at least one library-level 376 -- finalizer. 377 378 function Lt_Linker_Option (Op1 : Natural; Op2 : Natural) return Boolean; 379 -- Compare linker options, when sorting, first according to 380 -- Is_Internal_File (internal files come later) and then by 381 -- elaboration order position (latest to earliest). 382 383 procedure Move_Linker_Option (From : Natural; To : Natural); 384 -- Move routine for sorting linker options 385 386 procedure Resolve_Binder_Options (Elab_Order : Unit_Id_Array); 387 -- Set the value of With_GNARL 388 389 procedure Set_Char (C : Character); 390 -- Set given character in Statement_Buffer at the Stm_Last + 1 position 391 -- and increment Stm_Last by one to reflect the stored character. 392 393 procedure Set_Int (N : Int); 394 -- Set given value in decimal in Statement_Buffer with no spaces starting 395 -- at the Stm_Last + 1 position, and updating Stm_Last past the value. A 396 -- minus sign is output for a negative value. 397 398 procedure Set_Boolean (B : Boolean); 399 -- Set given boolean value in Statement_Buffer at the Stm_Last + 1 position 400 -- and update Stm_Last past the value. 401 402 procedure Set_IS_Pragma_Table; 403 -- Initializes contents of IS_Pragma_Settings table from ALI table 404 405 procedure Set_Main_Program_Name; 406 -- Given the main program name in Name_Buffer (length in Name_Len) generate 407 -- the name of the routine to be used in the call. The name is generated 408 -- starting at Stm_Last + 1, and Stm_Last is updated past it. 409 410 procedure Set_Name_Buffer; 411 -- Set the value stored in positions 1 .. Name_Len of the Name_Buffer 412 413 procedure Set_PSD_Pragma_Table; 414 -- Initializes contents of PSD_Pragma_Settings table from ALI table 415 416 procedure Set_String (S : String); 417 -- Sets characters of given string in Statement_Buffer, starting at the 418 -- Stm_Last + 1 position, and updating last past the string value. 419 420 procedure Set_String_Replace (S : String); 421 -- Replaces the last S'Length characters in the Statement_Buffer with the 422 -- characters of S. The caller must ensure that these characters do in fact 423 -- exist in the Statement_Buffer. 424 425 procedure Set_Unit_Name; 426 -- Given a unit name in the Name_Buffer, copy it into Statement_Buffer, 427 -- starting at the Stm_Last + 1 position and update Stm_Last past the 428 -- value. Each dot (.) will be qualified into double underscores (__). 429 430 procedure Set_Unit_Number (U : Unit_Id); 431 -- Sets unit number (first unit is 1, leading zeroes output to line up all 432 -- output unit numbers nicely as required by the value, and by the total 433 -- number of units. 434 435 procedure Write_Statement_Buffer; 436 -- Write out contents of statement buffer up to Stm_Last, and reset 437 -- Stm_Last to 0. 438 439 procedure Write_Statement_Buffer (S : String); 440 -- First writes its argument (using Set_String (S)), then writes out the 441 -- contents of statement buffer up to Stm_Last, and resets Stm_Last to 0. 442 443 procedure Write_Bind_Line (S : String); 444 -- Write S (an LF-terminated string) to the binder file (for use with 445 -- Set_Special_Output). 446 447 ------------------ 448 -- Gen_Adafinal -- 449 ------------------ 450 451 procedure Gen_Adafinal is 452 begin 453 WBI (" procedure " & Ada_Final_Name.all & " is"); 454 455 -- Call s_stalib_adafinal to await termination of tasks and so on. We 456 -- want to do this if there is a main program, either in Ada or in some 457 -- other language. (Note that Bind_Main_Program is True for Ada mains, 458 -- but False for mains in other languages.) We do not want to do this if 459 -- we're binding a library. 460 461 if not Bind_For_Library and not CodePeer_Mode then 462 WBI (" procedure s_stalib_adafinal;"); 463 Set_String (" pragma Import (Ada, s_stalib_adafinal, "); 464 Set_String ("""system__standard_library__adafinal"");"); 465 Write_Statement_Buffer; 466 end if; 467 468 WBI (""); 469 WBI (" procedure Runtime_Finalize;"); 470 WBI (" pragma Import (C, Runtime_Finalize, " & 471 """__gnat_runtime_finalize"");"); 472 WBI (""); 473 WBI (" begin"); 474 475 if not CodePeer_Mode then 476 WBI (" if not Is_Elaborated then"); 477 WBI (" return;"); 478 WBI (" end if;"); 479 WBI (" Is_Elaborated := False;"); 480 end if; 481 482 WBI (" Runtime_Finalize;"); 483 484 -- By default (real targets), finalization is done differently depending 485 -- on whether this is the main program or a library. 486 487 if not CodePeer_Mode then 488 if not Bind_For_Library then 489 WBI (" s_stalib_adafinal;"); 490 elsif Lib_Final_Built then 491 WBI (" finalize_library;"); 492 else 493 WBI (" null;"); 494 end if; 495 496 -- Pragma Import C cannot be used on virtual targets, therefore call the 497 -- runtime finalization routine directly in CodePeer mode, where 498 -- imported functions are ignored. 499 500 else 501 WBI (" System.Standard_Library.Adafinal;"); 502 end if; 503 504 WBI (" end " & Ada_Final_Name.all & ";"); 505 WBI (""); 506 end Gen_Adafinal; 507 508 ----------------- 509 -- Gen_Adainit -- 510 ----------------- 511 512 procedure Gen_Adainit (Elab_Order : Unit_Id_Array) is 513 Main_Priority : Int renames ALIs.Table (ALIs.First).Main_Priority; 514 Main_CPU : Int renames ALIs.Table (ALIs.First).Main_CPU; 515 516 begin 517 -- Declare the access-to-subprogram type used for initialization of 518 -- of __gnat_finalize_library_objects. This is declared at library 519 -- level for compatibility with the type used in System.Soft_Links. 520 -- The import of the soft link which performs library-level object 521 -- finalization does not work for CodePeer, so regular Ada is used in 522 -- that case. For restricted run-time libraries (ZFP and Ravenscar) 523 -- tasks are non-terminating, so we do not want finalization. 524 525 if not Suppress_Standard_Library_On_Target 526 and then not CodePeer_Mode 527 and then not Configurable_Run_Time_On_Target 528 then 529 WBI (" type No_Param_Proc is access procedure;"); 530 WBI (" pragma Favor_Top_Level (No_Param_Proc);"); 531 WBI (""); 532 end if; 533 534 WBI (" procedure " & Ada_Init_Name.all & " is"); 535 536 -- In CodePeer mode, simplify adainit procedure by only calling 537 -- elaboration procedures. 538 539 if CodePeer_Mode then 540 WBI (" begin"); 541 542 -- If the standard library is suppressed, then the only global variables 543 -- that might be needed (by the Ravenscar profile) are the priority and 544 -- the processor for the environment task. 545 546 elsif Suppress_Standard_Library_On_Target then 547 if Main_Priority /= No_Main_Priority then 548 WBI (" Main_Priority : Integer;"); 549 WBI (" pragma Import (C, Main_Priority," & 550 " ""__gl_main_priority"");"); 551 WBI (""); 552 end if; 553 554 if Main_CPU /= No_Main_CPU then 555 WBI (" Main_CPU : Integer;"); 556 WBI (" pragma Import (C, Main_CPU," & 557 " ""__gl_main_cpu"");"); 558 WBI (""); 559 end if; 560 561 if System_Interrupts_Used 562 and then Partition_Elaboration_Policy_Specified = 'S' 563 then 564 WBI (" procedure Install_Restricted_Handlers_Sequential;"); 565 WBI (" pragma Import (C," & 566 "Install_Restricted_Handlers_Sequential," & 567 " ""__gnat_attach_all_handlers"");"); 568 WBI (""); 569 end if; 570 571 if System_Tasking_Restricted_Stages_Used 572 and then Partition_Elaboration_Policy_Specified = 'S' 573 then 574 WBI (" Partition_Elaboration_Policy : Character;"); 575 WBI (" pragma Import (C, Partition_Elaboration_Policy," & 576 " ""__gnat_partition_elaboration_policy"");"); 577 WBI (""); 578 WBI (" procedure Activate_All_Tasks_Sequential;"); 579 WBI (" pragma Import (C, Activate_All_Tasks_Sequential," & 580 " ""__gnat_activate_all_tasks"");"); 581 WBI (""); 582 end if; 583 584 if System_BB_CPU_Primitives_Multiprocessors_Used then 585 WBI (" procedure Start_Slave_CPUs;"); 586 WBI (" pragma Import (C, Start_Slave_CPUs," & 587 " ""__gnat_start_slave_cpus"");"); 588 WBI (""); 589 end if; 590 591 -- Import the default stack object if a size has been provided to the 592 -- binder. 593 594 if Opt.Default_Stack_Size /= Opt.No_Stack_Size then 595 WBI (" Default_Stack_Size : Integer;"); 596 WBI (" pragma Import (C, Default_Stack_Size, " & 597 """__gl_default_stack_size"");"); 598 end if; 599 600 -- Initialize stack limit variable of the environment task if the 601 -- stack check method is stack limit and stack check is enabled. 602 603 if Stack_Check_Limits_On_Target 604 and then (Stack_Check_Default_On_Target or Stack_Check_Switch_Set) 605 then 606 WBI (""); 607 WBI (" procedure Initialize_Stack_Limit;"); 608 WBI (" pragma Import (C, Initialize_Stack_Limit, " & 609 """__gnat_initialize_stack_limit"");"); 610 end if; 611 612 if System_Secondary_Stack_Package_In_Closure then 613 -- System.Secondary_Stack is in the closure of the program 614 -- because the program uses the secondary stack or the restricted 615 -- run-time is unconditionally calling SS_Init. In both cases, 616 -- SS_Init needs to know the number of secondary stacks created by 617 -- the binder. 618 619 WBI (" Binder_Sec_Stacks_Count : Natural;"); 620 WBI (" pragma Import (Ada, Binder_Sec_Stacks_Count, " & 621 """__gnat_binder_ss_count"");"); 622 WBI (""); 623 624 -- Import secondary stack pool variables if the secondary stack 625 -- used. They are not referenced otherwise. 626 627 if Sec_Stack_Used then 628 WBI (" Default_Secondary_Stack_Size : " & 629 "System.Parameters.Size_Type;"); 630 WBI (" pragma Import (C, Default_Secondary_Stack_Size, " & 631 """__gnat_default_ss_size"");"); 632 633 WBI (" Default_Sized_SS_Pool : System.Address;"); 634 WBI (" pragma Import (Ada, Default_Sized_SS_Pool, " & 635 """__gnat_default_ss_pool"");"); 636 637 WBI (""); 638 end if; 639 end if; 640 641 WBI (" begin"); 642 643 -- Set the default stack size if provided to the binder 644 645 if Opt.Default_Stack_Size /= Opt.No_Stack_Size then 646 Set_String (" Default_Stack_Size := "); 647 Set_Int (Default_Stack_Size); 648 Set_String (";"); 649 Write_Statement_Buffer; 650 end if; 651 652 if Main_Priority /= No_Main_Priority then 653 Set_String (" Main_Priority := "); 654 Set_Int (Main_Priority); 655 Set_Char (';'); 656 Write_Statement_Buffer; 657 end if; 658 659 if Main_CPU /= No_Main_CPU then 660 Set_String (" Main_CPU := "); 661 Set_Int (Main_CPU); 662 Set_Char (';'); 663 Write_Statement_Buffer; 664 end if; 665 666 if System_Tasking_Restricted_Stages_Used 667 and then Partition_Elaboration_Policy_Specified = 'S' 668 then 669 Set_String (" Partition_Elaboration_Policy := '"); 670 Set_Char (Partition_Elaboration_Policy_Specified); 671 Set_String ("';"); 672 Write_Statement_Buffer; 673 end if; 674 675 if Main_Priority = No_Main_Priority 676 and then Opt.Default_Stack_Size = Opt.No_Stack_Size 677 and then Main_CPU = No_Main_CPU 678 and then not System_Tasking_Restricted_Stages_Used 679 then 680 WBI (" null;"); 681 end if; 682 683 -- Generate the default-sized secondary stack pool if the secondary 684 -- stack is used by the program. 685 686 if System_Secondary_Stack_Package_In_Closure then 687 if Sec_Stack_Used then 688 -- Elaborate the body of the binder to initialize the default- 689 -- sized secondary stack pool. 690 691 WBI (""); 692 WBI (" " & Get_Ada_Main_Name & "'Elab_Body;"); 693 694 -- Generate the default-sized secondary stack pool and set the 695 -- related secondary stack globals. 696 697 Set_String (" Default_Secondary_Stack_Size := "); 698 699 if Opt.Default_Sec_Stack_Size /= Opt.No_Stack_Size then 700 Set_Int (Opt.Default_Sec_Stack_Size); 701 else 702 Set_String 703 ("System.Parameters.Runtime_Default_Sec_Stack_Size"); 704 end if; 705 706 Set_Char (';'); 707 Write_Statement_Buffer; 708 709 Set_String (" Binder_Sec_Stacks_Count := "); 710 Set_Int (Num_Sec_Stacks); 711 Set_Char (';'); 712 Write_Statement_Buffer; 713 714 WBI (" Default_Sized_SS_Pool := " & 715 "Sec_Default_Sized_Stacks'Address;"); 716 WBI (""); 717 718 else 719 -- The presence of System.Secondary_Stack in the closure of the 720 -- program implies the restricted run-time is unconditionally 721 -- calling SS_Init. Let SS_Init know that no stacks were 722 -- created. 723 724 WBI (" Binder_Sec_Stacks_Count := 0;"); 725 end if; 726 end if; 727 728 -- Normal case (standard library not suppressed). Set all global values 729 -- used by the run time. 730 731 else 732 WBI (" Main_Priority : Integer;"); 733 WBI (" pragma Import (C, Main_Priority, " & 734 """__gl_main_priority"");"); 735 WBI (" Time_Slice_Value : Integer;"); 736 WBI (" pragma Import (C, Time_Slice_Value, " & 737 """__gl_time_slice_val"");"); 738 WBI (" WC_Encoding : Character;"); 739 WBI (" pragma Import (C, WC_Encoding, ""__gl_wc_encoding"");"); 740 WBI (" Locking_Policy : Character;"); 741 WBI (" pragma Import (C, Locking_Policy, " & 742 """__gl_locking_policy"");"); 743 WBI (" Queuing_Policy : Character;"); 744 WBI (" pragma Import (C, Queuing_Policy, " & 745 """__gl_queuing_policy"");"); 746 WBI (" Task_Dispatching_Policy : Character;"); 747 WBI (" pragma Import (C, Task_Dispatching_Policy, " & 748 """__gl_task_dispatching_policy"");"); 749 WBI (" Priority_Specific_Dispatching : System.Address;"); 750 WBI (" pragma Import (C, Priority_Specific_Dispatching, " & 751 """__gl_priority_specific_dispatching"");"); 752 WBI (" Num_Specific_Dispatching : Integer;"); 753 WBI (" pragma Import (C, Num_Specific_Dispatching, " & 754 """__gl_num_specific_dispatching"");"); 755 WBI (" Main_CPU : Integer;"); 756 WBI (" pragma Import (C, Main_CPU, " & 757 """__gl_main_cpu"");"); 758 759 WBI (" Interrupt_States : System.Address;"); 760 WBI (" pragma Import (C, Interrupt_States, " & 761 """__gl_interrupt_states"");"); 762 WBI (" Num_Interrupt_States : Integer;"); 763 WBI (" pragma Import (C, Num_Interrupt_States, " & 764 """__gl_num_interrupt_states"");"); 765 WBI (" Unreserve_All_Interrupts : Integer;"); 766 WBI (" pragma Import (C, Unreserve_All_Interrupts, " & 767 """__gl_unreserve_all_interrupts"");"); 768 769 if Exception_Tracebacks or Exception_Tracebacks_Symbolic then 770 WBI (" Exception_Tracebacks : Integer;"); 771 WBI (" pragma Import (C, Exception_Tracebacks, " & 772 """__gl_exception_tracebacks"");"); 773 774 if Exception_Tracebacks_Symbolic then 775 WBI (" Exception_Tracebacks_Symbolic : Integer;"); 776 WBI (" pragma Import (C, Exception_Tracebacks_Symbolic, " & 777 """__gl_exception_tracebacks_symbolic"");"); 778 end if; 779 end if; 780 781 WBI (" Detect_Blocking : Integer;"); 782 WBI (" pragma Import (C, Detect_Blocking, " & 783 """__gl_detect_blocking"");"); 784 WBI (" Default_Stack_Size : Integer;"); 785 WBI (" pragma Import (C, Default_Stack_Size, " & 786 """__gl_default_stack_size"");"); 787 788 if Sec_Stack_Used then 789 WBI (" Default_Secondary_Stack_Size : " & 790 "System.Parameters.Size_Type;"); 791 WBI (" pragma Import (C, Default_Secondary_Stack_Size, " & 792 """__gnat_default_ss_size"");"); 793 end if; 794 795 if Leap_Seconds_Support then 796 WBI (" Leap_Seconds_Support : Integer;"); 797 WBI (" pragma Import (C, Leap_Seconds_Support, " & 798 """__gl_leap_seconds_support"");"); 799 end if; 800 801 WBI (" Bind_Env_Addr : System.Address;"); 802 WBI (" pragma Import (C, Bind_Env_Addr, " & 803 """__gl_bind_env_addr"");"); 804 805 if XDR_Stream then 806 WBI (" XDR_Stream : Integer;"); 807 WBI (" pragma Import (C, XDR_Stream, ""__gl_xdr_stream"");"); 808 end if; 809 810 -- Import entry point for elaboration time signal handler 811 -- installation, and indication of if it's been called previously. 812 813 WBI (""); 814 WBI (" procedure Runtime_Initialize " & 815 "(Install_Handler : Integer);"); 816 WBI (" pragma Import (C, Runtime_Initialize, " & 817 """__gnat_runtime_initialize"");"); 818 819 -- Import handlers attach procedure for sequential elaboration policy 820 821 if System_Interrupts_Used 822 and then Partition_Elaboration_Policy_Specified = 'S' 823 then 824 WBI (" procedure Install_Restricted_Handlers_Sequential;"); 825 WBI (" pragma Import (C," & 826 "Install_Restricted_Handlers_Sequential," & 827 " ""__gnat_attach_all_handlers"");"); 828 WBI (""); 829 end if; 830 831 -- Import task activation procedure for sequential elaboration 832 -- policy. 833 834 if System_Tasking_Restricted_Stages_Used 835 and then Partition_Elaboration_Policy_Specified = 'S' 836 then 837 WBI (" Partition_Elaboration_Policy : Character;"); 838 WBI (" pragma Import (C, Partition_Elaboration_Policy," & 839 " ""__gnat_partition_elaboration_policy"");"); 840 WBI (""); 841 WBI (" procedure Activate_All_Tasks_Sequential;"); 842 WBI (" pragma Import (C, Activate_All_Tasks_Sequential," & 843 " ""__gnat_activate_all_tasks"");"); 844 end if; 845 846 -- Import procedure to start slave cpus for bareboard runtime 847 848 if System_BB_CPU_Primitives_Multiprocessors_Used then 849 WBI (" procedure Start_Slave_CPUs;"); 850 WBI (" pragma Import (C, Start_Slave_CPUs," & 851 " ""__gnat_start_slave_cpus"");"); 852 end if; 853 854 -- For restricted run-time libraries (ZFP and Ravenscar) 855 -- tasks are non-terminating, so we do not want finalization. 856 857 if not Configurable_Run_Time_On_Target then 858 WBI (""); 859 WBI (" Finalize_Library_Objects : No_Param_Proc;"); 860 WBI (" pragma Import (C, Finalize_Library_Objects, " & 861 """__gnat_finalize_library_objects"");"); 862 end if; 863 864 -- Initialize stack limit variable of the environment task if the 865 -- stack check method is stack limit and stack check is enabled. 866 867 if Stack_Check_Limits_On_Target 868 and then (Stack_Check_Default_On_Target or Stack_Check_Switch_Set) 869 then 870 WBI (""); 871 WBI (" procedure Initialize_Stack_Limit;"); 872 WBI (" pragma Import (C, Initialize_Stack_Limit, " & 873 """__gnat_initialize_stack_limit"");"); 874 end if; 875 876 -- When dispatching domains are used then we need to signal it 877 -- before calling the main procedure. 878 879 if Dispatching_Domains_Used then 880 WBI (" procedure Freeze_Dispatching_Domains;"); 881 WBI (" pragma Import"); 882 WBI (" (Ada, Freeze_Dispatching_Domains, " 883 & """__gnat_freeze_dispatching_domains"");"); 884 end if; 885 886 -- Secondary stack global variables 887 888 WBI (" Binder_Sec_Stacks_Count : Natural;"); 889 WBI (" pragma Import (Ada, Binder_Sec_Stacks_Count, " & 890 """__gnat_binder_ss_count"");"); 891 892 WBI (" Default_Sized_SS_Pool : System.Address;"); 893 WBI (" pragma Import (Ada, Default_Sized_SS_Pool, " & 894 """__gnat_default_ss_pool"");"); 895 896 WBI (""); 897 898 -- Start of processing for Adainit 899 900 WBI (" begin"); 901 WBI (" if Is_Elaborated then"); 902 WBI (" return;"); 903 WBI (" end if;"); 904 WBI (" Is_Elaborated := True;"); 905 906 -- Call System.Elaboration_Allocators.Mark_Start_Of_Elaboration if 907 -- restriction No_Standard_Allocators_After_Elaboration is active. 908 909 if Cumulative_Restrictions.Set 910 (No_Standard_Allocators_After_Elaboration) 911 then 912 WBI (" System.Elaboration_Allocators." 913 & "Mark_Start_Of_Elaboration;"); 914 end if; 915 916 -- Generate assignments to initialize globals 917 918 Set_String (" Main_Priority := "); 919 Set_Int (Main_Priority); 920 Set_Char (';'); 921 Write_Statement_Buffer; 922 923 Set_String (" Time_Slice_Value := "); 924 925 if Task_Dispatching_Policy_Specified = 'F' 926 and then ALIs.Table (ALIs.First).Time_Slice_Value = -1 927 then 928 Set_Int (0); 929 else 930 Set_Int (ALIs.Table (ALIs.First).Time_Slice_Value); 931 end if; 932 933 Set_Char (';'); 934 Write_Statement_Buffer; 935 936 Set_String (" WC_Encoding := '"); 937 Set_Char (Get_WC_Encoding); 938 939 Set_String ("';"); 940 Write_Statement_Buffer; 941 942 Set_String (" Locking_Policy := '"); 943 Set_Char (Locking_Policy_Specified); 944 Set_String ("';"); 945 Write_Statement_Buffer; 946 947 Set_String (" Queuing_Policy := '"); 948 Set_Char (Queuing_Policy_Specified); 949 Set_String ("';"); 950 Write_Statement_Buffer; 951 952 Set_String (" Task_Dispatching_Policy := '"); 953 Set_Char (Task_Dispatching_Policy_Specified); 954 Set_String ("';"); 955 Write_Statement_Buffer; 956 957 if System_Tasking_Restricted_Stages_Used 958 and then Partition_Elaboration_Policy_Specified = 'S' 959 then 960 Set_String (" Partition_Elaboration_Policy := '"); 961 Set_Char (Partition_Elaboration_Policy_Specified); 962 Set_String ("';"); 963 Write_Statement_Buffer; 964 end if; 965 966 Gen_Restrictions; 967 968 WBI (" Priority_Specific_Dispatching :="); 969 WBI (" Local_Priority_Specific_Dispatching'Address;"); 970 971 Set_String (" Num_Specific_Dispatching := "); 972 Set_Int (PSD_Pragma_Settings.Last + 1); 973 Set_Char (';'); 974 Write_Statement_Buffer; 975 976 Set_String (" Main_CPU := "); 977 Set_Int (Main_CPU); 978 Set_Char (';'); 979 Write_Statement_Buffer; 980 981 WBI (" Interrupt_States := Local_Interrupt_States'Address;"); 982 983 Set_String (" Num_Interrupt_States := "); 984 Set_Int (IS_Pragma_Settings.Last + 1); 985 Set_Char (';'); 986 Write_Statement_Buffer; 987 988 Set_String (" Unreserve_All_Interrupts := "); 989 990 if Unreserve_All_Interrupts_Specified then 991 Set_String ("1"); 992 else 993 Set_String ("0"); 994 end if; 995 996 Set_Char (';'); 997 Write_Statement_Buffer; 998 999 if Exception_Tracebacks or Exception_Tracebacks_Symbolic then 1000 WBI (" Exception_Tracebacks := 1;"); 1001 1002 if Exception_Tracebacks_Symbolic then 1003 WBI (" Exception_Tracebacks_Symbolic := 1;"); 1004 end if; 1005 end if; 1006 1007 Set_String (" Detect_Blocking := "); 1008 1009 if Detect_Blocking then 1010 Set_Int (1); 1011 else 1012 Set_Int (0); 1013 end if; 1014 1015 Set_String (";"); 1016 Write_Statement_Buffer; 1017 1018 Set_String (" Default_Stack_Size := "); 1019 Set_Int (Default_Stack_Size); 1020 Set_String (";"); 1021 Write_Statement_Buffer; 1022 1023 if Leap_Seconds_Support then 1024 WBI (" Leap_Seconds_Support := 1;"); 1025 end if; 1026 1027 if XDR_Stream then 1028 WBI (" XDR_Stream := 1;"); 1029 end if; 1030 1031 if Bind_Env_String_Built then 1032 WBI (" Bind_Env_Addr := Bind_Env'Address;"); 1033 end if; 1034 1035 WBI (""); 1036 1037 -- Generate default-sized secondary stack pool and set secondary 1038 -- stack globals. 1039 1040 if Sec_Stack_Used then 1041 1042 -- Elaborate the body of the binder to initialize the default- 1043 -- sized secondary stack pool. 1044 1045 WBI (" " & Get_Ada_Main_Name & "'Elab_Body;"); 1046 1047 -- Generate the default-sized secondary stack pool and set the 1048 -- related secondary stack globals. 1049 1050 Set_String (" Default_Secondary_Stack_Size := "); 1051 1052 if Opt.Default_Sec_Stack_Size /= Opt.No_Stack_Size then 1053 Set_Int (Opt.Default_Sec_Stack_Size); 1054 else 1055 Set_String ("System.Parameters.Runtime_Default_Sec_Stack_Size"); 1056 end if; 1057 1058 Set_Char (';'); 1059 Write_Statement_Buffer; 1060 1061 Set_String (" Binder_Sec_Stacks_Count := "); 1062 Set_Int (Num_Sec_Stacks); 1063 Set_Char (';'); 1064 Write_Statement_Buffer; 1065 1066 Set_String (" Default_Sized_SS_Pool := "); 1067 1068 if Num_Sec_Stacks > 0 then 1069 Set_String ("Sec_Default_Sized_Stacks'Address;"); 1070 else 1071 Set_String ("System.Null_Address;"); 1072 end if; 1073 1074 Write_Statement_Buffer; 1075 WBI (""); 1076 end if; 1077 1078 -- Generate call to Runtime_Initialize 1079 1080 WBI (" Runtime_Initialize (1);"); 1081 end if; 1082 1083 -- Generate call to set Initialize_Scalar values if active 1084 1085 if Initialize_Scalars_Used then 1086 WBI (""); 1087 Set_String (" System.Scalar_Values.Initialize ('"); 1088 Set_Char (Initialize_Scalars_Mode1); 1089 Set_String ("', '"); 1090 Set_Char (Initialize_Scalars_Mode2); 1091 Set_String ("');"); 1092 Write_Statement_Buffer; 1093 end if; 1094 1095 -- Initialize stack limit variable of the environment task if the stack 1096 -- check method is stack limit and stack check is enabled. 1097 1098 if Stack_Check_Limits_On_Target 1099 and then (Stack_Check_Default_On_Target or Stack_Check_Switch_Set) 1100 then 1101 WBI (""); 1102 WBI (" Initialize_Stack_Limit;"); 1103 end if; 1104 1105 -- On CodePeer, the finalization of library objects is not relevant 1106 1107 if CodePeer_Mode then 1108 null; 1109 1110 -- If this is the main program case, attach finalize_library to the soft 1111 -- link. Do it only when not using a restricted run time, in which case 1112 -- tasks are non-terminating, so we do not want library-level 1113 -- finalization. 1114 1115 elsif not Bind_For_Library 1116 and then not Configurable_Run_Time_On_Target 1117 and then not Suppress_Standard_Library_On_Target 1118 then 1119 WBI (""); 1120 1121 if Lib_Final_Built then 1122 Set_String (" Finalize_Library_Objects := "); 1123 Set_String ("finalize_library'access;"); 1124 else 1125 Set_String (" Finalize_Library_Objects := null;"); 1126 end if; 1127 1128 Write_Statement_Buffer; 1129 end if; 1130 1131 -- Generate elaboration calls 1132 1133 if not CodePeer_Mode then 1134 WBI (""); 1135 end if; 1136 1137 Gen_Elab_Calls (Elab_Order); 1138 1139 if not CodePeer_Mode then 1140 1141 -- Call System.Elaboration_Allocators.Mark_Start_Of_Elaboration if 1142 -- restriction No_Standard_Allocators_After_Elaboration is active. 1143 1144 if Cumulative_Restrictions.Set 1145 (No_Standard_Allocators_After_Elaboration) 1146 then 1147 WBI 1148 (" System.Elaboration_Allocators.Mark_End_Of_Elaboration;"); 1149 end if; 1150 1151 -- From this point, no new dispatching domain can be created 1152 1153 if Dispatching_Domains_Used then 1154 WBI (" Freeze_Dispatching_Domains;"); 1155 end if; 1156 1157 -- Sequential partition elaboration policy 1158 1159 if Partition_Elaboration_Policy_Specified = 'S' then 1160 if System_Interrupts_Used then 1161 WBI (" Install_Restricted_Handlers_Sequential;"); 1162 end if; 1163 1164 if System_Tasking_Restricted_Stages_Used then 1165 WBI (" Activate_All_Tasks_Sequential;"); 1166 end if; 1167 end if; 1168 1169 if System_BB_CPU_Primitives_Multiprocessors_Used then 1170 WBI (" Start_Slave_CPUs;"); 1171 end if; 1172 end if; 1173 1174 WBI (" end " & Ada_Init_Name.all & ";"); 1175 WBI (""); 1176 end Gen_Adainit; 1177 1178 ------------------------- 1179 -- Gen_Bind_Env_String -- 1180 ------------------------- 1181 1182 procedure Gen_Bind_Env_String is 1183 procedure Write_Name_With_Len (Nam : Name_Id); 1184 -- Write Nam as a string literal, prefixed with one 1185 -- character encoding Nam's length. 1186 1187 ------------------------- 1188 -- Write_Name_With_Len -- 1189 ------------------------- 1190 1191 procedure Write_Name_With_Len (Nam : Name_Id) is 1192 begin 1193 Get_Name_String (Nam); 1194 Write_Str ("Character'Val ("); 1195 Write_Int (Int (Name_Len)); 1196 Write_Str (") & """); 1197 Write_Str (Name_Buffer (1 .. Name_Len)); 1198 Write_Char ('"'); 1199 end Write_Name_With_Len; 1200 1201 -- Local variables 1202 1203 First : Boolean := True; 1204 KN : Name_Id := No_Name; 1205 VN : Name_Id := No_Name; 1206 1207 -- Start of processing for Gen_Bind_Env_String 1208 1209 begin 1210 Bind_Environment.Get_First (KN, VN); 1211 1212 if VN = No_Name then 1213 return; 1214 end if; 1215 1216 Set_Special_Output (Write_Bind_Line'Access); 1217 1218 WBI (" Bind_Env : aliased constant String :="); 1219 1220 while VN /= No_Name loop 1221 if First then 1222 Write_Str (" "); 1223 else 1224 Write_Str (" & "); 1225 end if; 1226 1227 Write_Name_With_Len (KN); 1228 Write_Str (" & "); 1229 Write_Name_With_Len (VN); 1230 Write_Eol; 1231 1232 Bind_Environment.Get_Next (KN, VN); 1233 First := False; 1234 end loop; 1235 1236 WBI (" & ASCII.NUL;"); 1237 1238 Cancel_Special_Output; 1239 Bind_Env_String_Built := True; 1240 end Gen_Bind_Env_String; 1241 1242 -------------------------- 1243 -- Gen_CodePeer_Wrapper -- 1244 -------------------------- 1245 1246 procedure Gen_CodePeer_Wrapper is 1247 Callee_Name : constant String := "Ada_Main_Program"; 1248 1249 begin 1250 if ALIs.Table (ALIs.First).Main_Program = Proc then 1251 WBI (" procedure " & CodePeer_Wrapper_Name & " is "); 1252 WBI (" begin"); 1253 WBI (" " & Callee_Name & ";"); 1254 1255 else 1256 WBI (" function " & CodePeer_Wrapper_Name & " return Integer is"); 1257 WBI (" begin"); 1258 WBI (" return " & Callee_Name & ";"); 1259 end if; 1260 1261 WBI (" end " & CodePeer_Wrapper_Name & ";"); 1262 WBI (""); 1263 end Gen_CodePeer_Wrapper; 1264 1265 -------------------- 1266 -- Gen_Elab_Calls -- 1267 -------------------- 1268 1269 procedure Gen_Elab_Calls (Elab_Order : Unit_Id_Array) is 1270 Check_Elab_Flag : Boolean; 1271 1272 begin 1273 -- Loop through elaboration order entries 1274 1275 for E in Elab_Order'Range loop 1276 declare 1277 Unum : constant Unit_Id := Elab_Order (E); 1278 U : Unit_Record renames Units.Table (Unum); 1279 1280 Unum_Spec : Unit_Id; 1281 -- This is the unit number of the spec that corresponds to 1282 -- this entry. It is the same as Unum except when the body 1283 -- and spec are different and we are currently processing 1284 -- the body, in which case it is the spec (Unum + 1). 1285 1286 begin 1287 if U.Utype = Is_Body then 1288 Unum_Spec := Unum + 1; 1289 else 1290 Unum_Spec := Unum; 1291 end if; 1292 1293 -- Nothing to do if predefined unit in no run time mode 1294 1295 if No_Run_Time_Mode and then Is_Predefined_File_Name (U.Sfile) then 1296 null; 1297 1298 -- Likewise if this is an interface to a stand alone library 1299 1300 elsif U.SAL_Interface then 1301 null; 1302 1303 -- Case of no elaboration code 1304 1305 elsif U.No_Elab 1306 1307 -- In CodePeer mode, we special case subprogram bodies which 1308 -- are handled in the 'else' part below, and lead to a call 1309 -- to <subp>'Elab_Subp_Body. 1310 1311 and then (not CodePeer_Mode 1312 1313 -- Test for spec 1314 1315 or else U.Utype = Is_Spec 1316 or else U.Utype = Is_Spec_Only 1317 or else U.Unit_Kind /= 's') 1318 then 1319 -- In the case of a body with a separate spec, where the 1320 -- separate spec has an elaboration entity defined, this is 1321 -- where we increment the elaboration entity if one exists. 1322 1323 -- Likewise for lone specs with an elaboration entity defined 1324 -- despite No_Elaboration_Code, e.g. when requested to preserve 1325 -- control flow. 1326 1327 if (U.Utype = Is_Body or else U.Utype = Is_Spec_Only) 1328 and then Units.Table (Unum_Spec).Set_Elab_Entity 1329 and then not CodePeer_Mode 1330 then 1331 Set_String (" E"); 1332 Set_Unit_Number (Unum_Spec); 1333 Set_String (" := E"); 1334 Set_Unit_Number (Unum_Spec); 1335 Set_String (" + 1;"); 1336 Write_Statement_Buffer; 1337 end if; 1338 1339 -- Here if elaboration code is present. If binding a library 1340 -- or if there is a non-Ada main subprogram then we generate: 1341 1342 -- if uname_E = 0 then 1343 -- uname'elab_[spec|body]; 1344 -- end if; 1345 -- uname_E := uname_E + 1; 1346 1347 -- Otherwise, elaboration routines are called unconditionally: 1348 1349 -- uname'elab_[spec|body]; 1350 -- uname_E := uname_E + 1; 1351 1352 -- The uname_E increment is skipped if this is a separate spec, 1353 -- since it will be done when we process the body. 1354 1355 -- In CodePeer mode, we do not generate any reference to xxx_E 1356 -- variables, only calls to 'Elab* subprograms. 1357 1358 else 1359 -- Check incompatibilities with No_Multiple_Elaboration 1360 1361 if not CodePeer_Mode 1362 and then Cumulative_Restrictions.Set (No_Multiple_Elaboration) 1363 then 1364 -- Force_Checking_Of_Elaboration_Flags (-F) not allowed 1365 1366 if Force_Checking_Of_Elaboration_Flags then 1367 Osint.Fail 1368 ("-F (force elaboration checks) switch not allowed " 1369 & "with restriction No_Multiple_Elaboration active"); 1370 1371 -- Interfacing of libraries not allowed 1372 1373 elsif Interface_Library_Unit then 1374 Osint.Fail 1375 ("binding of interfaced libraries not allowed " 1376 & "with restriction No_Multiple_Elaboration active"); 1377 1378 -- Non-Ada main program not allowed 1379 1380 elsif not Bind_Main_Program then 1381 Osint.Fail 1382 ("non-Ada main program not allowed " 1383 & "with restriction No_Multiple_Elaboration active"); 1384 end if; 1385 end if; 1386 1387 -- OK, see if we need to test elaboration flag 1388 1389 Check_Elab_Flag := 1390 Units.Table (Unum_Spec).Set_Elab_Entity 1391 and then not CodePeer_Mode 1392 and then (Force_Checking_Of_Elaboration_Flags 1393 or Interface_Library_Unit 1394 or not Bind_Main_Program); 1395 1396 if Check_Elab_Flag then 1397 Set_String (" if E"); 1398 Set_Unit_Number (Unum_Spec); 1399 Set_String (" = 0 then"); 1400 Write_Statement_Buffer; 1401 Set_String (" "); 1402 end if; 1403 1404 Set_String (" "); 1405 Get_Decoded_Name_String_With_Brackets (U.Uname); 1406 1407 if Name_Buffer (Name_Len) = 's' then 1408 Name_Buffer (Name_Len - 1 .. Name_Len + 8) := 1409 "'elab_spec"; 1410 Name_Len := Name_Len + 8; 1411 1412 -- Special case in CodePeer mode for subprogram bodies 1413 -- which correspond to CodePeer 'Elab_Subp_Body special 1414 -- init procedure. 1415 1416 elsif U.Unit_Kind = 's' and CodePeer_Mode then 1417 Name_Buffer (Name_Len - 1 .. Name_Len + 13) := 1418 "'elab_subp_body"; 1419 Name_Len := Name_Len + 13; 1420 1421 else 1422 Name_Buffer (Name_Len - 1 .. Name_Len + 8) := 1423 "'elab_body"; 1424 Name_Len := Name_Len + 8; 1425 end if; 1426 1427 Set_Casing (U.Icasing); 1428 Set_Name_Buffer; 1429 Set_Char (';'); 1430 Write_Statement_Buffer; 1431 1432 if Check_Elab_Flag then 1433 WBI (" end if;"); 1434 end if; 1435 1436 if U.Utype /= Is_Spec 1437 and then not CodePeer_Mode 1438 and then Units.Table (Unum_Spec).Set_Elab_Entity 1439 then 1440 Set_String (" E"); 1441 Set_Unit_Number (Unum_Spec); 1442 Set_String (" := E"); 1443 Set_Unit_Number (Unum_Spec); 1444 Set_String (" + 1;"); 1445 Write_Statement_Buffer; 1446 end if; 1447 end if; 1448 end; 1449 end loop; 1450 end Gen_Elab_Calls; 1451 1452 ------------------------ 1453 -- Gen_Elab_Externals -- 1454 ------------------------ 1455 1456 procedure Gen_Elab_Externals (Elab_Order : Unit_Id_Array) is 1457 begin 1458 if CodePeer_Mode then 1459 return; 1460 end if; 1461 1462 for E in Elab_Order'Range loop 1463 declare 1464 Unum : constant Unit_Id := Elab_Order (E); 1465 U : Unit_Record renames Units.Table (Unum); 1466 1467 begin 1468 -- Check for Elab_Entity to be set for this unit 1469 1470 if U.Set_Elab_Entity 1471 1472 -- Don't generate reference for stand alone library 1473 1474 and then not U.SAL_Interface 1475 1476 -- Don't generate reference for predefined file in No_Run_Time 1477 -- mode, since we don't include the object files in this case 1478 1479 and then not 1480 (No_Run_Time_Mode 1481 and then Is_Predefined_File_Name (U.Sfile)) 1482 then 1483 Get_Name_String (U.Sfile); 1484 Set_String (" "); 1485 Set_String ("E"); 1486 Set_Unit_Number (Unum); 1487 Set_String (" : Short_Integer; pragma Import (Ada, E"); 1488 Set_Unit_Number (Unum); 1489 Set_String (", """); 1490 Get_Name_String (U.Uname); 1491 Set_Unit_Name; 1492 Set_String ("_E"");"); 1493 Write_Statement_Buffer; 1494 end if; 1495 end; 1496 end loop; 1497 1498 WBI (""); 1499 end Gen_Elab_Externals; 1500 1501 -------------------- 1502 -- Gen_Elab_Order -- 1503 -------------------- 1504 1505 procedure Gen_Elab_Order (Elab_Order : Unit_Id_Array) is 1506 begin 1507 WBI (""); 1508 WBI (" -- BEGIN ELABORATION ORDER"); 1509 1510 for J in Elab_Order'Range loop 1511 Set_String (" -- "); 1512 Get_Name_String (Units.Table (Elab_Order (J)).Uname); 1513 Set_Name_Buffer; 1514 Write_Statement_Buffer; 1515 end loop; 1516 1517 WBI (" -- END ELABORATION ORDER"); 1518 end Gen_Elab_Order; 1519 1520 -------------------------- 1521 -- Gen_Finalize_Library -- 1522 -------------------------- 1523 1524 procedure Gen_Finalize_Library (Elab_Order : Unit_Id_Array) is 1525 procedure Gen_Header; 1526 -- Generate the header of the finalization routine 1527 1528 ---------------- 1529 -- Gen_Header -- 1530 ---------------- 1531 1532 procedure Gen_Header is 1533 begin 1534 WBI (" procedure finalize_library is"); 1535 WBI (" begin"); 1536 end Gen_Header; 1537 1538 -- Local variables 1539 1540 Count : Int := 1; 1541 U : Unit_Record; 1542 Uspec : Unit_Record; 1543 Unum : Unit_Id; 1544 1545 -- Start of processing for Gen_Finalize_Library 1546 1547 begin 1548 if CodePeer_Mode then 1549 return; 1550 end if; 1551 1552 for E in reverse Elab_Order'Range loop 1553 Unum := Elab_Order (E); 1554 U := Units.Table (Unum); 1555 1556 -- Dealing with package bodies is a little complicated. In such 1557 -- cases we must retrieve the package spec since it contains the 1558 -- spec of the body finalizer. 1559 1560 if U.Utype = Is_Body then 1561 Unum := Unum + 1; 1562 Uspec := Units.Table (Unum); 1563 else 1564 Uspec := U; 1565 end if; 1566 1567 Get_Name_String (Uspec.Uname); 1568 1569 -- We are only interested in non-generic packages 1570 1571 if U.Unit_Kind /= 'p' or else U.Is_Generic then 1572 null; 1573 1574 -- That aren't an interface to a stand alone library 1575 1576 elsif U.SAL_Interface then 1577 null; 1578 1579 -- Case of no finalization 1580 1581 elsif not U.Has_Finalizer then 1582 1583 -- The only case in which we have to do something is if this 1584 -- is a body, with a separate spec, where the separate spec 1585 -- has a finalizer. In that case, this is where we decrement 1586 -- the elaboration entity. 1587 1588 if U.Utype = Is_Body and then Uspec.Has_Finalizer then 1589 if not Lib_Final_Built then 1590 Gen_Header; 1591 Lib_Final_Built := True; 1592 end if; 1593 1594 Set_String (" E"); 1595 Set_Unit_Number (Unum); 1596 Set_String (" := E"); 1597 Set_Unit_Number (Unum); 1598 Set_String (" - 1;"); 1599 Write_Statement_Buffer; 1600 end if; 1601 1602 else 1603 if not Lib_Final_Built then 1604 Gen_Header; 1605 Lib_Final_Built := True; 1606 end if; 1607 1608 -- Generate: 1609 -- declare 1610 -- procedure F<Count>; 1611 1612 Set_String (" declare"); 1613 Write_Statement_Buffer; 1614 1615 Set_String (" procedure F"); 1616 Set_Int (Count); 1617 Set_Char (';'); 1618 Write_Statement_Buffer; 1619 1620 -- Generate: 1621 -- pragma Import (Ada, F<Count>, 1622 -- "xx__yy__finalize_[body|spec]"); 1623 1624 Set_String (" pragma Import (Ada, F"); 1625 Set_Int (Count); 1626 Set_String (", """); 1627 1628 -- Perform name construction 1629 1630 Set_Unit_Name; 1631 Set_String ("__finalize_"); 1632 1633 -- Package spec processing 1634 1635 if U.Utype = Is_Spec 1636 or else U.Utype = Is_Spec_Only 1637 then 1638 Set_String ("spec"); 1639 1640 -- Package body processing 1641 1642 else 1643 Set_String ("body"); 1644 end if; 1645 1646 Set_String (""");"); 1647 Write_Statement_Buffer; 1648 1649 -- If binding a library or if there is a non-Ada main subprogram 1650 -- then we generate: 1651 1652 -- begin 1653 -- uname_E := uname_E - 1; 1654 -- if uname_E = 0 then 1655 -- F<Count>; 1656 -- end if; 1657 -- end; 1658 1659 -- Otherwise, finalization routines are called unconditionally: 1660 1661 -- begin 1662 -- uname_E := uname_E - 1; 1663 -- F<Count>; 1664 -- end; 1665 1666 -- The uname_E decrement is skipped if this is a separate spec, 1667 -- since it will be done when we process the body. 1668 1669 WBI (" begin"); 1670 1671 if U.Utype /= Is_Spec then 1672 Set_String (" E"); 1673 Set_Unit_Number (Unum); 1674 Set_String (" := E"); 1675 Set_Unit_Number (Unum); 1676 Set_String (" - 1;"); 1677 Write_Statement_Buffer; 1678 end if; 1679 1680 if Interface_Library_Unit or not Bind_Main_Program then 1681 Set_String (" if E"); 1682 Set_Unit_Number (Unum); 1683 Set_String (" = 0 then"); 1684 Write_Statement_Buffer; 1685 Set_String (" "); 1686 end if; 1687 1688 Set_String (" F"); 1689 Set_Int (Count); 1690 Set_Char (';'); 1691 Write_Statement_Buffer; 1692 1693 if Interface_Library_Unit or not Bind_Main_Program then 1694 WBI (" end if;"); 1695 end if; 1696 1697 WBI (" end;"); 1698 1699 Count := Count + 1; 1700 end if; 1701 end loop; 1702 1703 if Lib_Final_Built then 1704 1705 -- It is possible that the finalization of a library-level object 1706 -- raised an exception. In that case import the actual exception 1707 -- and the routine necessary to raise it. 1708 1709 WBI (" declare"); 1710 WBI (" procedure Reraise_Library_Exception_If_Any;"); 1711 1712 Set_String (" pragma Import (Ada, "); 1713 Set_String ("Reraise_Library_Exception_If_Any, "); 1714 Set_String ("""__gnat_reraise_library_exception_if_any"");"); 1715 Write_Statement_Buffer; 1716 1717 WBI (" begin"); 1718 WBI (" Reraise_Library_Exception_If_Any;"); 1719 WBI (" end;"); 1720 WBI (" end finalize_library;"); 1721 WBI (""); 1722 end if; 1723 end Gen_Finalize_Library; 1724 1725 -------------- 1726 -- Gen_Main -- 1727 -------------- 1728 1729 procedure Gen_Main is 1730 begin 1731 if not No_Main_Subprogram then 1732 1733 -- To call the main program, we declare it using a pragma Import 1734 -- Ada with the right link name. 1735 1736 -- It might seem more obvious to "with" the main program, and call 1737 -- it in the normal Ada manner. We do not do this for three 1738 -- reasons: 1739 1740 -- 1. It is more efficient not to recompile the main program 1741 -- 2. We are not entitled to assume the source is accessible 1742 -- 3. We don't know what options to use to compile it 1743 1744 -- It is really reason 3 that is most critical (indeed we used 1745 -- to generate the "with", but several regression tests failed). 1746 1747 if ALIs.Table (ALIs.First).Main_Program = Func then 1748 WBI (" function Ada_Main_Program return Integer;"); 1749 else 1750 WBI (" procedure Ada_Main_Program;"); 1751 end if; 1752 1753 Set_String (" pragma Import (Ada, Ada_Main_Program, """); 1754 Get_Name_String (Units.Table (First_Unit_Entry).Uname); 1755 Set_Main_Program_Name; 1756 Set_String (""");"); 1757 1758 Write_Statement_Buffer; 1759 WBI (""); 1760 1761 -- For CodePeer, declare a wrapper for the user-defined main program 1762 1763 if CodePeer_Mode then 1764 Gen_CodePeer_Wrapper; 1765 end if; 1766 end if; 1767 1768 if Exit_Status_Supported_On_Target then 1769 Set_String (" function "); 1770 else 1771 Set_String (" procedure "); 1772 end if; 1773 1774 Set_String (Get_Main_Name); 1775 1776 if Command_Line_Args_On_Target then 1777 Write_Statement_Buffer; 1778 WBI (" (argc : Integer;"); 1779 WBI (" argv : System.Address;"); 1780 WBI (" envp : System.Address)"); 1781 1782 if Exit_Status_Supported_On_Target then 1783 WBI (" return Integer"); 1784 end if; 1785 1786 WBI (" is"); 1787 1788 else 1789 if Exit_Status_Supported_On_Target then 1790 Set_String (" return Integer is"); 1791 else 1792 Set_String (" is"); 1793 end if; 1794 1795 Write_Statement_Buffer; 1796 end if; 1797 1798 if Opt.Default_Exit_Status /= 0 1799 and then Bind_Main_Program 1800 and then not Configurable_Run_Time_Mode 1801 then 1802 WBI (" procedure Set_Exit_Status (Status : Integer);"); 1803 WBI (" pragma Import (C, Set_Exit_Status, " & 1804 """__gnat_set_exit_status"");"); 1805 WBI (""); 1806 end if; 1807 1808 -- Initialize and Finalize 1809 1810 if not CodePeer_Mode 1811 and then not Cumulative_Restrictions.Set (No_Finalization) 1812 then 1813 WBI (" procedure Initialize (Addr : System.Address);"); 1814 WBI (" pragma Import (C, Initialize, ""__gnat_initialize"");"); 1815 WBI (""); 1816 WBI (" procedure Finalize;"); 1817 WBI (" pragma Import (C, Finalize, ""__gnat_finalize"");"); 1818 end if; 1819 1820 -- If we want to analyze the stack, we must import corresponding symbols 1821 1822 if Dynamic_Stack_Measurement then 1823 WBI (""); 1824 WBI (" procedure Output_Results;"); 1825 WBI (" pragma Import (C, Output_Results, " & 1826 """__gnat_stack_usage_output_results"");"); 1827 1828 WBI (""); 1829 WBI (" " & 1830 "procedure Initialize_Stack_Analysis (Buffer_Size : Natural);"); 1831 WBI (" pragma Import (C, Initialize_Stack_Analysis, " & 1832 """__gnat_stack_usage_initialize"");"); 1833 end if; 1834 1835 -- Deal with declarations for main program case 1836 1837 if not No_Main_Subprogram then 1838 if ALIs.Table (ALIs.First).Main_Program = Func then 1839 WBI (" Result : Integer;"); 1840 WBI (""); 1841 end if; 1842 1843 if Bind_Main_Program 1844 and not Suppress_Standard_Library_On_Target 1845 and not CodePeer_Mode 1846 then 1847 WBI (" SEH : aliased array (1 .. 2) of Integer;"); 1848 WBI (""); 1849 end if; 1850 end if; 1851 1852 -- Generate a reference to Ada_Main_Program_Name. This symbol is not 1853 -- referenced elsewhere in the generated program, but is needed by 1854 -- the debugger (that's why it is generated in the first place). The 1855 -- reference stops Ada_Main_Program_Name from being optimized away by 1856 -- smart linkers. 1857 1858 -- Because this variable is unused, we make this variable "aliased" 1859 -- with a pragma Volatile in order to tell the compiler to preserve 1860 -- this variable at any level of optimization. 1861 1862 -- CodePeer and CCG do not need this extra code. The code is also not 1863 -- needed if the binder is in "Minimal Binder" mode. 1864 1865 if Bind_Main_Program 1866 and then not Minimal_Binder 1867 and then not CodePeer_Mode 1868 and then not Generate_C_Code 1869 then 1870 WBI (" Ensure_Reference : aliased System.Address := " & 1871 "Ada_Main_Program_Name'Address;"); 1872 WBI (" pragma Volatile (Ensure_Reference);"); 1873 WBI (""); 1874 end if; 1875 1876 WBI (" begin"); 1877 1878 -- Acquire command-line arguments if present on target 1879 1880 if CodePeer_Mode then 1881 null; 1882 1883 elsif Command_Line_Args_On_Target then 1884 1885 -- Initialize gnat_argc/gnat_argv only if not already initialized, 1886 -- to avoid losing the result of any command-line processing done by 1887 -- earlier GNAT run-time initialization. 1888 1889 WBI (" if gnat_argc = 0 then"); 1890 WBI (" gnat_argc := argc;"); 1891 WBI (" gnat_argv := argv;"); 1892 WBI (" end if;"); 1893 WBI (" gnat_envp := envp;"); 1894 WBI (""); 1895 1896 -- If configurable run-time and no command-line args, then nothing needs 1897 -- to be done since the gnat_argc/argv/envp variables are suppressed in 1898 -- this case. 1899 1900 elsif Configurable_Run_Time_On_Target then 1901 null; 1902 1903 -- Otherwise set dummy values (to be filled in by some other unit?) 1904 1905 else 1906 WBI (" gnat_argc := 0;"); 1907 WBI (" gnat_argv := System.Null_Address;"); 1908 WBI (" gnat_envp := System.Null_Address;"); 1909 end if; 1910 1911 if Opt.Default_Exit_Status /= 0 1912 and then Bind_Main_Program 1913 and then not Configurable_Run_Time_Mode 1914 then 1915 Set_String (" Set_Exit_Status ("); 1916 Set_Int (Opt.Default_Exit_Status); 1917 Set_String (");"); 1918 Write_Statement_Buffer; 1919 end if; 1920 1921 if Dynamic_Stack_Measurement then 1922 Set_String (" Initialize_Stack_Analysis ("); 1923 Set_Int (Dynamic_Stack_Measurement_Array_Size); 1924 Set_String (");"); 1925 Write_Statement_Buffer; 1926 end if; 1927 1928 if not Cumulative_Restrictions.Set (No_Finalization) 1929 and then not CodePeer_Mode 1930 then 1931 if not No_Main_Subprogram 1932 and then Bind_Main_Program 1933 and then not Suppress_Standard_Library_On_Target 1934 then 1935 WBI (" Initialize (SEH'Address);"); 1936 else 1937 WBI (" Initialize (System.Null_Address);"); 1938 end if; 1939 end if; 1940 1941 WBI (" " & Ada_Init_Name.all & ";"); 1942 1943 if not No_Main_Subprogram then 1944 if CodePeer_Mode then 1945 if ALIs.Table (ALIs.First).Main_Program = Proc then 1946 WBI (" " & CodePeer_Wrapper_Name & ";"); 1947 else 1948 WBI (" Result := " & CodePeer_Wrapper_Name & ";"); 1949 end if; 1950 1951 elsif ALIs.Table (ALIs.First).Main_Program = Proc then 1952 WBI (" Ada_Main_Program;"); 1953 1954 else 1955 WBI (" Result := Ada_Main_Program;"); 1956 end if; 1957 end if; 1958 1959 -- Adafinal call is skipped if no finalization 1960 1961 if not Cumulative_Restrictions.Set (No_Finalization) then 1962 WBI (" adafinal;"); 1963 end if; 1964 1965 -- Prints the result of static stack analysis 1966 1967 if Dynamic_Stack_Measurement then 1968 WBI (" Output_Results;"); 1969 end if; 1970 1971 -- Finalize is only called if we have a run time 1972 1973 if not Cumulative_Restrictions.Set (No_Finalization) 1974 and then not CodePeer_Mode 1975 then 1976 WBI (" Finalize;"); 1977 end if; 1978 1979 -- Return result 1980 1981 if Exit_Status_Supported_On_Target then 1982 if No_Main_Subprogram 1983 or else ALIs.Table (ALIs.First).Main_Program = Proc 1984 then 1985 WBI (" return (gnat_exit_status);"); 1986 else 1987 WBI (" return (Result);"); 1988 end if; 1989 end if; 1990 1991 WBI (" end;"); 1992 WBI (""); 1993 end Gen_Main; 1994 1995 ------------------------------ 1996 -- Gen_Object_Files_Options -- 1997 ------------------------------ 1998 1999 procedure Gen_Object_Files_Options (Elab_Order : Unit_Id_Array) is 2000 Lgnat : Natural; 2001 -- This keeps track of the position in the sorted set of entries in the 2002 -- Linker_Options table of where the first entry from an internal file 2003 -- appears. 2004 2005 Linker_Option_List_Started : Boolean := False; 2006 -- Set to True when "LINKER OPTION LIST" is displayed 2007 2008 procedure Write_Linker_Option; 2009 -- Write binder info linker option 2010 2011 ------------------------- 2012 -- Write_Linker_Option -- 2013 ------------------------- 2014 2015 procedure Write_Linker_Option is 2016 Start : Natural; 2017 Stop : Natural; 2018 2019 begin 2020 -- Loop through string, breaking at null's 2021 2022 Start := 1; 2023 while Start < Name_Len loop 2024 2025 -- Find null ending this section 2026 2027 Stop := Start + 1; 2028 while Name_Buffer (Stop) /= ASCII.NUL 2029 and then Stop <= Name_Len loop 2030 Stop := Stop + 1; 2031 end loop; 2032 2033 -- Process section if non-null 2034 2035 if Stop > Start then 2036 if Output_Linker_Option_List then 2037 if not Zero_Formatting then 2038 if not Linker_Option_List_Started then 2039 Linker_Option_List_Started := True; 2040 Write_Eol; 2041 Write_Str (" LINKER OPTION LIST"); 2042 Write_Eol; 2043 Write_Eol; 2044 end if; 2045 2046 Write_Str (" "); 2047 end if; 2048 2049 Write_Str (Name_Buffer (Start .. Stop - 1)); 2050 Write_Eol; 2051 end if; 2052 WBI (" -- " & Name_Buffer (Start .. Stop - 1)); 2053 end if; 2054 2055 Start := Stop + 1; 2056 end loop; 2057 end Write_Linker_Option; 2058 2059 -- Start of processing for Gen_Object_Files_Options 2060 2061 begin 2062 WBI ("-- BEGIN Object file/option list"); 2063 2064 if Object_List_Filename /= null then 2065 Set_List_File (Object_List_Filename.all); 2066 end if; 2067 2068 for E in Elab_Order'Range loop 2069 2070 -- If not spec that has an associated body, then generate a comment 2071 -- giving the name of the corresponding object file. 2072 2073 if not Units.Table (Elab_Order (E)).SAL_Interface 2074 and then Units.Table (Elab_Order (E)).Utype /= Is_Spec 2075 then 2076 Get_Name_String 2077 (ALIs.Table 2078 (Units.Table (Elab_Order (E)).My_ALI).Ofile_Full_Name); 2079 2080 -- If the presence of an object file is necessary or if it exists, 2081 -- then use it. 2082 2083 if not Hostparm.Exclude_Missing_Objects 2084 or else 2085 System.OS_Lib.Is_Regular_File (Name_Buffer (1 .. Name_Len)) 2086 then 2087 WBI (" -- " & Name_Buffer (1 .. Name_Len)); 2088 2089 if Output_Object_List then 2090 Write_Str (Name_Buffer (1 .. Name_Len)); 2091 Write_Eol; 2092 end if; 2093 end if; 2094 end if; 2095 end loop; 2096 2097 if Object_List_Filename /= null then 2098 Close_List_File; 2099 end if; 2100 2101 -- Add a "-Ldir" for each directory in the object path 2102 2103 for J in 1 .. Nb_Dir_In_Obj_Search_Path loop 2104 declare 2105 Dir : constant String_Ptr := Dir_In_Obj_Search_Path (J); 2106 2107 begin 2108 Name_Len := 0; 2109 Add_Str_To_Name_Buffer ("-L"); 2110 Add_Str_To_Name_Buffer (Dir.all); 2111 Write_Linker_Option; 2112 end; 2113 end loop; 2114 2115 if not (Opt.No_Run_Time_Mode or Opt.No_Stdlib) then 2116 Name_Len := 0; 2117 2118 if Opt.Shared_Libgnat then 2119 Add_Str_To_Name_Buffer ("-shared"); 2120 else 2121 Add_Str_To_Name_Buffer ("-static"); 2122 end if; 2123 2124 -- Write directly to avoid inclusion in -K output as -static and 2125 -- -shared are not usually specified linker options. 2126 2127 WBI (" -- " & Name_Buffer (1 .. Name_Len)); 2128 end if; 2129 2130 -- Sort linker options 2131 2132 -- This sort accomplishes two important purposes: 2133 2134 -- a) All application files are sorted to the front, and all GNAT 2135 -- internal files are sorted to the end. This results in a well 2136 -- defined dividing line between the two sets of files, for the 2137 -- purpose of inserting certain standard library references into 2138 -- the linker arguments list. 2139 2140 -- b) Given two different units, we sort the linker options so that 2141 -- those from a unit earlier in the elaboration order comes later 2142 -- in the list. This is a heuristic designed to create a more 2143 -- friendly order of linker options when the operations appear in 2144 -- separate units. The idea is that if unit A must be elaborated 2145 -- before unit B, then it is more likely that B references 2146 -- libraries included by A, than vice versa, so we want libraries 2147 -- included by A to come after libraries included by B. 2148 2149 -- These two criteria are implemented by function Lt_Linker_Option. Note 2150 -- that a special case of b) is that specs are elaborated before bodies, 2151 -- so linker options from specs come after linker options for bodies, 2152 -- and again, the assumption is that libraries used by the body are more 2153 -- likely to reference libraries used by the spec, than vice versa. 2154 2155 Sort 2156 (Linker_Options.Last, 2157 Move_Linker_Option'Access, 2158 Lt_Linker_Option'Access); 2159 2160 -- Write user linker options, i.e. the set of linker options that come 2161 -- from all files other than GNAT internal files, Lgnat is left set to 2162 -- point to the first entry from a GNAT internal file, or past the end 2163 -- of the entries if there are no internal files. 2164 2165 Lgnat := Linker_Options.Last + 1; 2166 2167 for J in 1 .. Linker_Options.Last loop 2168 if not Linker_Options.Table (J).Internal_File then 2169 Get_Name_String (Linker_Options.Table (J).Name); 2170 Write_Linker_Option; 2171 else 2172 Lgnat := J; 2173 exit; 2174 end if; 2175 end loop; 2176 2177 -- Now we insert standard linker options that must appear after the 2178 -- entries from user files, and before the entries from GNAT run-time 2179 -- files. The reason for this decision is that libraries referenced 2180 -- by internal routines may reference these standard library entries. 2181 2182 -- Note that we do not insert anything when pragma No_Run_Time has 2183 -- been specified or when the standard libraries are not to be used, 2184 -- otherwise on some platforms, we may get duplicate symbols when 2185 -- linking (not clear if this is still the case, but it is harmless). 2186 2187 if not (Opt.No_Run_Time_Mode or else Opt.No_Stdlib) then 2188 if With_GNARL then 2189 Name_Len := 0; 2190 2191 if Opt.Shared_Libgnat then 2192 Add_Str_To_Name_Buffer (Shared_Lib ("gnarl")); 2193 else 2194 Add_Str_To_Name_Buffer ("-lgnarl"); 2195 end if; 2196 2197 Write_Linker_Option; 2198 end if; 2199 2200 Name_Len := 0; 2201 2202 if Opt.Shared_Libgnat then 2203 Add_Str_To_Name_Buffer (Shared_Lib ("gnat")); 2204 else 2205 Add_Str_To_Name_Buffer ("-lgnat"); 2206 end if; 2207 2208 Write_Linker_Option; 2209 end if; 2210 2211 -- Write linker options from all internal files 2212 2213 for J in Lgnat .. Linker_Options.Last loop 2214 Get_Name_String (Linker_Options.Table (J).Name); 2215 Write_Linker_Option; 2216 end loop; 2217 2218 if Output_Linker_Option_List and then not Zero_Formatting then 2219 Write_Eol; 2220 end if; 2221 2222 WBI ("-- END Object file/option list "); 2223 end Gen_Object_Files_Options; 2224 2225 --------------------- 2226 -- Gen_Output_File -- 2227 --------------------- 2228 2229 procedure Gen_Output_File 2230 (Filename : String; 2231 Elab_Order : Unit_Id_Array) 2232 is 2233 begin 2234 -- Acquire settings for Interrupt_State pragmas 2235 2236 Set_IS_Pragma_Table; 2237 2238 -- Acquire settings for Priority_Specific_Dispatching pragma 2239 2240 Set_PSD_Pragma_Table; 2241 2242 -- Override time slice value if -T switch is set 2243 2244 if Time_Slice_Set then 2245 ALIs.Table (ALIs.First).Time_Slice_Value := Opt.Time_Slice_Value; 2246 end if; 2247 2248 -- Count number of elaboration calls 2249 2250 for E in Elab_Order'Range loop 2251 if Units.Table (Elab_Order (E)).No_Elab then 2252 null; 2253 else 2254 Num_Elab_Calls := Num_Elab_Calls + 1; 2255 end if; 2256 end loop; 2257 2258 -- Count the number of statically allocated stacks to be generated by 2259 -- the binder. If the user has specified the number of default-sized 2260 -- secondary stacks, use that number. Otherwise start the count at one 2261 -- as the binder is responsible for creating a secondary stack for the 2262 -- main task. 2263 2264 if Opt.Quantity_Of_Default_Size_Sec_Stacks /= -1 then 2265 Num_Sec_Stacks := Quantity_Of_Default_Size_Sec_Stacks; 2266 elsif Sec_Stack_Used then 2267 Num_Sec_Stacks := 1; 2268 end if; 2269 2270 for J in Units.First .. Units.Last loop 2271 Num_Primary_Stacks := 2272 Num_Primary_Stacks + Units.Table (J).Primary_Stack_Count; 2273 2274 Num_Sec_Stacks := 2275 Num_Sec_Stacks + Units.Table (J).Sec_Stack_Count; 2276 end loop; 2277 2278 -- Generate output file in appropriate language 2279 2280 Gen_Output_File_Ada (Filename, Elab_Order); 2281 end Gen_Output_File; 2282 2283 ------------------------- 2284 -- Gen_Output_File_Ada -- 2285 ------------------------- 2286 2287 procedure Gen_Output_File_Ada 2288 (Filename : String; Elab_Order : Unit_Id_Array) 2289 is 2290 Ada_Main : constant String := Get_Ada_Main_Name; 2291 -- Name to be used for generated Ada main program. See the body of 2292 -- function Get_Ada_Main_Name for details on the form of the name. 2293 2294 Needs_Library_Finalization : constant Boolean := 2295 not Configurable_Run_Time_On_Target 2296 and then Has_Finalizer (Elab_Order); 2297 -- For restricted run-time libraries (ZFP and Ravenscar) tasks are 2298 -- non-terminating, so we do not want finalization. 2299 2300 Bfiles : Name_Id; 2301 -- Name of generated bind file (spec) 2302 2303 Bfileb : Name_Id; 2304 -- Name of generated bind file (body) 2305 2306 begin 2307 -- Create spec first 2308 2309 Create_Binder_Output (Filename, 's', Bfiles); 2310 2311 -- We always compile the binder file in Ada 95 mode so that we properly 2312 -- handle use of Ada 2005 keywords as identifiers in Ada 95 mode. None 2313 -- of the Ada 2005 or Ada 2012 constructs are needed by the binder file. 2314 2315 WBI ("pragma Warnings (Off);"); 2316 WBI ("pragma Ada_95;"); 2317 2318 -- If we are operating in Restrictions (No_Exception_Handlers) mode, 2319 -- then we need to make sure that the binder program is compiled with 2320 -- the same restriction, so that no exception tables are generated. 2321 2322 if Cumulative_Restrictions.Set (No_Exception_Handlers) then 2323 WBI ("pragma Restrictions (No_Exception_Handlers);"); 2324 end if; 2325 2326 -- Same processing for Restrictions (No_Exception_Propagation) 2327 2328 if Cumulative_Restrictions.Set (No_Exception_Propagation) then 2329 WBI ("pragma Restrictions (No_Exception_Propagation);"); 2330 end if; 2331 2332 -- Same processing for pragma No_Run_Time 2333 2334 if No_Run_Time_Mode then 2335 WBI ("pragma No_Run_Time;"); 2336 end if; 2337 2338 -- Generate with of System so we can reference System.Address 2339 2340 WBI ("with System;"); 2341 2342 -- Generate with of System.Initialize_Scalars if active 2343 2344 if Initialize_Scalars_Used then 2345 WBI ("with System.Scalar_Values;"); 2346 end if; 2347 2348 -- Generate withs of System.Secondary_Stack and System.Parameters to 2349 -- allow the generation of the default-sized secondary stack pool. 2350 2351 if Sec_Stack_Used then 2352 WBI ("with System.Parameters;"); 2353 WBI ("with System.Secondary_Stack;"); 2354 end if; 2355 2356 Resolve_Binder_Options (Elab_Order); 2357 2358 -- Generate standard with's 2359 2360 if not Suppress_Standard_Library_On_Target then 2361 if CodePeer_Mode then 2362 WBI ("with System.Standard_Library;"); 2363 end if; 2364 end if; 2365 2366 WBI ("package " & Ada_Main & " is"); 2367 2368 -- Main program case 2369 2370 if Bind_Main_Program then 2371 -- Generate argc/argv stuff unless suppressed 2372 2373 if Command_Line_Args_On_Target 2374 or not Configurable_Run_Time_On_Target 2375 then 2376 WBI (""); 2377 WBI (" gnat_argc : Integer;"); 2378 WBI (" gnat_argv : System.Address;"); 2379 WBI (" gnat_envp : System.Address;"); 2380 2381 -- If the standard library is not suppressed, these variables 2382 -- are in the run-time data area for easy run time access. 2383 2384 if not Suppress_Standard_Library_On_Target then 2385 WBI (""); 2386 WBI (" pragma Import (C, gnat_argc);"); 2387 WBI (" pragma Import (C, gnat_argv);"); 2388 WBI (" pragma Import (C, gnat_envp);"); 2389 end if; 2390 end if; 2391 2392 -- Define exit status. Again in normal mode, this is in the run-time 2393 -- library, and is initialized there, but in the configurable 2394 -- run-time case, the variable is declared and initialized in this 2395 -- file. 2396 2397 WBI (""); 2398 2399 if Configurable_Run_Time_Mode then 2400 if Exit_Status_Supported_On_Target then 2401 WBI (" gnat_exit_status : Integer := 0;"); 2402 end if; 2403 2404 else 2405 WBI (" gnat_exit_status : Integer;"); 2406 WBI (" pragma Import (C, gnat_exit_status);"); 2407 end if; 2408 2409 -- Generate the GNAT_Version and Ada_Main_Program_Name info only for 2410 -- the main program. Otherwise, it can lead under some circumstances 2411 -- to a symbol duplication during the link (for instance when a C 2412 -- program uses two Ada libraries). Also zero terminate the string 2413 -- so that its end can be found reliably at run time. 2414 2415 if not Minimal_Binder then 2416 WBI (""); 2417 WBI (" GNAT_Version : constant String :="); 2418 WBI (" """ & Ver_Prefix & 2419 Gnat_Version_String & 2420 """ & ASCII.NUL;"); 2421 WBI (" pragma Export (C, GNAT_Version, ""__gnat_version"");"); 2422 WBI (""); 2423 WBI (" GNAT_Version_Address : constant System.Address := " & 2424 "GNAT_Version'Address;"); 2425 WBI (" pragma Export (C, GNAT_Version_Address, " & 2426 """__gnat_version_address"");"); 2427 WBI (""); 2428 Set_String (" Ada_Main_Program_Name : constant String := """); 2429 Get_Name_String (Units.Table (First_Unit_Entry).Uname); 2430 2431 Set_Main_Program_Name; 2432 Set_String (""" & ASCII.NUL;"); 2433 2434 Write_Statement_Buffer; 2435 2436 WBI 2437 (" pragma Export (C, Ada_Main_Program_Name, " & 2438 """__gnat_ada_main_program_name"");"); 2439 end if; 2440 end if; 2441 2442 WBI (""); 2443 WBI (" procedure " & Ada_Init_Name.all & ";"); 2444 WBI (" pragma Export (C, " & Ada_Init_Name.all & ", """ & 2445 Ada_Init_Name.all & """);"); 2446 2447 -- If -a has been specified use pragma Linker_Constructor for the init 2448 -- procedure and pragma Linker_Destructor for the final procedure. 2449 2450 if Use_Pragma_Linker_Constructor then 2451 WBI (" pragma Linker_Constructor (" & Ada_Init_Name.all & ");"); 2452 end if; 2453 2454 if not Cumulative_Restrictions.Set (No_Finalization) then 2455 WBI (""); 2456 WBI (" procedure " & Ada_Final_Name.all & ";"); 2457 WBI (" pragma Export (C, " & Ada_Final_Name.all & ", """ & 2458 Ada_Final_Name.all & """);"); 2459 2460 if Use_Pragma_Linker_Constructor then 2461 WBI (" pragma Linker_Destructor (" & Ada_Final_Name.all & ");"); 2462 end if; 2463 end if; 2464 2465 if Bind_Main_Program then 2466 2467 WBI (""); 2468 2469 if Exit_Status_Supported_On_Target then 2470 Set_String (" function "); 2471 else 2472 Set_String (" procedure "); 2473 end if; 2474 2475 Set_String (Get_Main_Name); 2476 2477 -- Generate argument list if present 2478 2479 if Command_Line_Args_On_Target then 2480 Write_Statement_Buffer; 2481 WBI (" (argc : Integer;"); 2482 WBI (" argv : System.Address;"); 2483 Set_String 2484 (" envp : System.Address)"); 2485 2486 if Exit_Status_Supported_On_Target then 2487 Write_Statement_Buffer; 2488 WBI (" return Integer;"); 2489 else 2490 Write_Statement_Buffer (";"); 2491 end if; 2492 2493 else 2494 if Exit_Status_Supported_On_Target then 2495 Write_Statement_Buffer (" return Integer;"); 2496 else 2497 Write_Statement_Buffer (";"); 2498 end if; 2499 end if; 2500 2501 WBI (" pragma Export (C, " & Get_Main_Name & ", """ & 2502 Get_Main_Name & """);"); 2503 end if; 2504 2505 -- Generate version numbers for units, only if needed. Be very safe on 2506 -- the condition. 2507 2508 if not Configurable_Run_Time_On_Target 2509 or else System_Version_Control_Used 2510 or else not Bind_Main_Program 2511 then 2512 Gen_Versions; 2513 end if; 2514 2515 Gen_Elab_Order (Elab_Order); 2516 2517 -- Spec is complete 2518 2519 WBI (""); 2520 WBI ("end " & Ada_Main & ";"); 2521 Close_Binder_Output; 2522 2523 -- Prepare to write body 2524 2525 Create_Binder_Output (Filename, 'b', Bfileb); 2526 2527 -- We always compile the binder file in Ada 95 mode so that we properly 2528 -- handle use of Ada 2005 keywords as identifiers in Ada 95 mode. None 2529 -- of the Ada 2005/2012 constructs are needed by the binder file. 2530 2531 WBI ("pragma Warnings (Off);"); 2532 WBI ("pragma Ada_95;"); 2533 2534 -- Output Source_File_Name pragmas which look like 2535 2536 -- pragma Source_File_Name (Ada_Main, Spec_File_Name => "sss"); 2537 -- pragma Source_File_Name (Ada_Main, Body_File_Name => "bbb"); 2538 2539 -- where sss/bbb are the spec/body file names respectively 2540 2541 Get_Name_String (Bfiles); 2542 Name_Buffer (Name_Len + 1 .. Name_Len + 3) := """);"; 2543 2544 WBI ("pragma Source_File_Name (" & 2545 Ada_Main & 2546 ", Spec_File_Name => """ & 2547 Name_Buffer (1 .. Name_Len + 3)); 2548 2549 Get_Name_String (Bfileb); 2550 Name_Buffer (Name_Len + 1 .. Name_Len + 3) := """);"; 2551 2552 WBI ("pragma Source_File_Name (" & 2553 Ada_Main & 2554 ", Body_File_Name => """ & 2555 Name_Buffer (1 .. Name_Len + 3)); 2556 2557 -- Generate pragma Suppress (Overflow_Check). This is needed for recent 2558 -- versions of the compiler which have overflow checks on by default. 2559 -- We do not want overflow checking enabled for the increments of the 2560 -- elaboration variables (since this can cause an unwanted reference to 2561 -- the last chance exception handler for limited run-times). 2562 2563 WBI ("pragma Suppress (Overflow_Check);"); 2564 2565 -- Generate with of System.Restrictions to initialize 2566 -- Run_Time_Restrictions. 2567 2568 if System_Restrictions_Used 2569 and not Suppress_Standard_Library_On_Target 2570 then 2571 WBI (""); 2572 WBI ("with System.Restrictions;"); 2573 end if; 2574 2575 -- Generate with of Ada.Exceptions if needs library finalization 2576 2577 if Needs_Library_Finalization then 2578 WBI ("with Ada.Exceptions;"); 2579 end if; 2580 2581 -- Generate with of System.Elaboration_Allocators if the restriction 2582 -- No_Standard_Allocators_After_Elaboration was present. 2583 2584 if Cumulative_Restrictions.Set 2585 (No_Standard_Allocators_After_Elaboration) 2586 then 2587 WBI ("with System.Elaboration_Allocators;"); 2588 end if; 2589 2590 -- Generate start of package body 2591 2592 WBI (""); 2593 WBI ("package body " & Ada_Main & " is"); 2594 WBI (""); 2595 2596 -- Generate externals for elaboration entities 2597 2598 Gen_Elab_Externals (Elab_Order); 2599 2600 -- Generate default-sized secondary stacks pool. At least one stack is 2601 -- created and assigned to the environment task if secondary stacks are 2602 -- used by the program. 2603 2604 if Sec_Stack_Used then 2605 Set_String (" Sec_Default_Sized_Stacks"); 2606 Set_String (" : array (1 .. "); 2607 Set_Int (Num_Sec_Stacks); 2608 Set_String (") of aliased System.Secondary_Stack.SS_Stack ("); 2609 2610 if Opt.Default_Sec_Stack_Size /= No_Stack_Size then 2611 Set_Int (Opt.Default_Sec_Stack_Size); 2612 else 2613 Set_String ("System.Parameters.Runtime_Default_Sec_Stack_Size"); 2614 end if; 2615 2616 Set_String (");"); 2617 Write_Statement_Buffer; 2618 WBI (""); 2619 end if; 2620 2621 -- Generate reference 2622 2623 if not CodePeer_Mode then 2624 if not Suppress_Standard_Library_On_Target then 2625 2626 -- Generate Priority_Specific_Dispatching pragma string 2627 2628 Set_String 2629 (" Local_Priority_Specific_Dispatching : " & 2630 "constant String := """); 2631 2632 for J in 0 .. PSD_Pragma_Settings.Last loop 2633 Set_Char (PSD_Pragma_Settings.Table (J)); 2634 end loop; 2635 2636 Set_String (""";"); 2637 Write_Statement_Buffer; 2638 2639 -- Generate Interrupt_State pragma string 2640 2641 Set_String (" Local_Interrupt_States : constant String := """); 2642 2643 for J in 0 .. IS_Pragma_Settings.Last loop 2644 Set_Char (IS_Pragma_Settings.Table (J)); 2645 end loop; 2646 2647 Set_String (""";"); 2648 Write_Statement_Buffer; 2649 WBI (""); 2650 end if; 2651 2652 if not Suppress_Standard_Library_On_Target then 2653 2654 -- The B.1(39) implementation advice says that the adainit and 2655 -- adafinal routines should be idempotent. Generate a flag to 2656 -- ensure that. This is not needed if we are suppressing the 2657 -- standard library since it would never be referenced. 2658 2659 WBI (" Is_Elaborated : Boolean := False;"); 2660 2661 -- Generate bind environment string 2662 2663 Gen_Bind_Env_String; 2664 end if; 2665 2666 WBI (""); 2667 end if; 2668 2669 -- Generate the adafinal routine unless there is no finalization to do 2670 2671 if not Cumulative_Restrictions.Set (No_Finalization) then 2672 if Needs_Library_Finalization then 2673 Gen_Finalize_Library (Elab_Order); 2674 end if; 2675 2676 Gen_Adafinal; 2677 end if; 2678 2679 Gen_Adainit (Elab_Order); 2680 2681 if Bind_Main_Program then 2682 Gen_Main; 2683 end if; 2684 2685 -- Output object file list and the Ada body is complete 2686 2687 Gen_Object_Files_Options (Elab_Order); 2688 2689 WBI (""); 2690 WBI ("end " & Ada_Main & ";"); 2691 2692 Close_Binder_Output; 2693 end Gen_Output_File_Ada; 2694 2695 ---------------------- 2696 -- Gen_Restrictions -- 2697 ---------------------- 2698 2699 procedure Gen_Restrictions is 2700 Count : Integer; 2701 2702 begin 2703 if Suppress_Standard_Library_On_Target 2704 or not System_Restrictions_Used 2705 then 2706 return; 2707 end if; 2708 2709 WBI (" System.Restrictions.Run_Time_Restrictions :="); 2710 WBI (" (Set =>"); 2711 Set_String (" ("); 2712 2713 Count := 0; 2714 2715 for J in Cumulative_Restrictions.Set'Range loop 2716 Set_Boolean (Cumulative_Restrictions.Set (J)); 2717 Set_String (", "); 2718 Count := Count + 1; 2719 2720 if J /= Cumulative_Restrictions.Set'Last and then Count = 8 then 2721 Write_Statement_Buffer; 2722 Set_String (" "); 2723 Count := 0; 2724 end if; 2725 end loop; 2726 2727 Set_String_Replace ("),"); 2728 Write_Statement_Buffer; 2729 Set_String (" Value => ("); 2730 2731 for J in Cumulative_Restrictions.Value'Range loop 2732 Set_Int (Int (Cumulative_Restrictions.Value (J))); 2733 Set_String (", "); 2734 end loop; 2735 2736 Set_String_Replace ("),"); 2737 Write_Statement_Buffer; 2738 WBI (" Violated =>"); 2739 Set_String (" ("); 2740 Count := 0; 2741 2742 for J in Cumulative_Restrictions.Violated'Range loop 2743 Set_Boolean (Cumulative_Restrictions.Violated (J)); 2744 Set_String (", "); 2745 Count := Count + 1; 2746 2747 if J /= Cumulative_Restrictions.Set'Last and then Count = 8 then 2748 Write_Statement_Buffer; 2749 Set_String (" "); 2750 Count := 0; 2751 end if; 2752 end loop; 2753 2754 Set_String_Replace ("),"); 2755 Write_Statement_Buffer; 2756 Set_String (" Count => ("); 2757 2758 for J in Cumulative_Restrictions.Count'Range loop 2759 Set_Int (Int (Cumulative_Restrictions.Count (J))); 2760 Set_String (", "); 2761 end loop; 2762 2763 Set_String_Replace ("),"); 2764 Write_Statement_Buffer; 2765 Set_String (" Unknown => ("); 2766 2767 for J in Cumulative_Restrictions.Unknown'Range loop 2768 Set_Boolean (Cumulative_Restrictions.Unknown (J)); 2769 Set_String (", "); 2770 end loop; 2771 2772 Set_String_Replace ("))"); 2773 Set_String (";"); 2774 Write_Statement_Buffer; 2775 end Gen_Restrictions; 2776 2777 ------------------ 2778 -- Gen_Versions -- 2779 ------------------ 2780 2781 -- This routine generates lines such as: 2782 2783 -- unnnnn : constant Integer := 16#hhhhhhhh#; 2784 -- pragma Export (C, unnnnn, unam); 2785 2786 -- for each unit, where unam is the unit name suffixed by either B or S for 2787 -- body or spec, with dots replaced by double underscores, and hhhhhhhh is 2788 -- the version number, and nnnnn is a 5-digits serial number. 2789 2790 procedure Gen_Versions is 2791 Ubuf : String (1 .. 6) := "u00000"; 2792 2793 procedure Increment_Ubuf; 2794 -- Little procedure to increment the serial number 2795 2796 -------------------- 2797 -- Increment_Ubuf -- 2798 -------------------- 2799 2800 procedure Increment_Ubuf is 2801 begin 2802 for J in reverse Ubuf'Range loop 2803 Ubuf (J) := Character'Succ (Ubuf (J)); 2804 exit when Ubuf (J) <= '9'; 2805 Ubuf (J) := '0'; 2806 end loop; 2807 end Increment_Ubuf; 2808 2809 -- Start of processing for Gen_Versions 2810 2811 begin 2812 WBI (""); 2813 2814 WBI (" type Version_32 is mod 2 ** 32;"); 2815 for U in Units.First .. Units.Last loop 2816 if not Units.Table (U).SAL_Interface 2817 and then (not Bind_For_Library 2818 or else Units.Table (U).Directly_Scanned) 2819 then 2820 Increment_Ubuf; 2821 WBI (" " & Ubuf & " : constant Version_32 := 16#" & 2822 Units.Table (U).Version & "#;"); 2823 Set_String (" pragma Export (C, "); 2824 Set_String (Ubuf); 2825 Set_String (", """); 2826 2827 Get_Name_String (Units.Table (U).Uname); 2828 2829 for K in 1 .. Name_Len loop 2830 if Name_Buffer (K) = '.' then 2831 Set_Char ('_'); 2832 Set_Char ('_'); 2833 2834 elsif Name_Buffer (K) = '%' then 2835 exit; 2836 2837 else 2838 Set_Char (Name_Buffer (K)); 2839 end if; 2840 end loop; 2841 2842 if Name_Buffer (Name_Len) = 's' then 2843 Set_Char ('S'); 2844 else 2845 Set_Char ('B'); 2846 end if; 2847 2848 Set_String (""");"); 2849 Write_Statement_Buffer; 2850 end if; 2851 end loop; 2852 end Gen_Versions; 2853 2854 ------------------------ 2855 -- Get_Main_Unit_Name -- 2856 ------------------------ 2857 2858 function Get_Main_Unit_Name (S : String) return String is 2859 Result : String := S; 2860 2861 begin 2862 for J in S'Range loop 2863 if Result (J) = '.' then 2864 Result (J) := '_'; 2865 end if; 2866 end loop; 2867 2868 return Result; 2869 end Get_Main_Unit_Name; 2870 2871 ----------------------- 2872 -- Get_Ada_Main_Name -- 2873 ----------------------- 2874 2875 function Get_Ada_Main_Name return String is 2876 Suffix : constant String := "_00"; 2877 Name : String (1 .. Opt.Ada_Main_Name.all'Length + Suffix'Length) := 2878 Opt.Ada_Main_Name.all & Suffix; 2879 Nlen : Natural; 2880 2881 begin 2882 -- For CodePeer, we want reproducible names (independent of other mains 2883 -- that may or may not be present) that don't collide when analyzing 2884 -- multiple mains and which are easily recognizable as "ada_main" names. 2885 2886 if CodePeer_Mode then 2887 Get_Name_String (Units.Table (First_Unit_Entry).Uname); 2888 2889 return 2890 "ada_main_for_" & 2891 Get_Main_Unit_Name (Name_Buffer (1 .. Name_Len - 2)); 2892 end if; 2893 2894 -- This loop tries the following possibilities in order 2895 -- <Ada_Main> 2896 -- <Ada_Main>_01 2897 -- <Ada_Main>_02 2898 -- .. 2899 -- <Ada_Main>_99 2900 -- where <Ada_Main> is equal to Opt.Ada_Main_Name. By default, 2901 -- it is set to 'ada_main'. 2902 2903 for J in 0 .. 99 loop 2904 if J = 0 then 2905 Nlen := Name'Length - Suffix'Length; 2906 else 2907 Nlen := Name'Length; 2908 Name (Name'Last) := Character'Val (J mod 10 + Character'Pos ('0')); 2909 Name (Name'Last - 1) := 2910 Character'Val (J / 10 + Character'Pos ('0')); 2911 end if; 2912 2913 for K in ALIs.First .. ALIs.Last loop 2914 for L in ALIs.Table (K).First_Unit .. ALIs.Table (K).Last_Unit loop 2915 2916 -- Get unit name, removing %b or %e at end 2917 2918 Get_Name_String (Units.Table (L).Uname); 2919 Name_Len := Name_Len - 2; 2920 2921 if Name_Buffer (1 .. Name_Len) = Name (1 .. Nlen) then 2922 goto Continue; 2923 end if; 2924 end loop; 2925 end loop; 2926 2927 return Name (1 .. Nlen); 2928 2929 <<Continue>> 2930 null; 2931 end loop; 2932 2933 -- If we fall through, just use a peculiar unlikely name 2934 2935 return ("Qwertyuiop"); 2936 end Get_Ada_Main_Name; 2937 2938 ------------------- 2939 -- Get_Main_Name -- 2940 ------------------- 2941 2942 function Get_Main_Name return String is 2943 begin 2944 -- Explicit name given with -M switch 2945 2946 if Bind_Alternate_Main_Name then 2947 return Alternate_Main_Name.all; 2948 2949 -- Case of main program name to be used directly 2950 2951 elsif Use_Ada_Main_Program_Name_On_Target then 2952 2953 -- Get main program name 2954 2955 Get_Name_String (Units.Table (First_Unit_Entry).Uname); 2956 2957 -- If this is a child name, return only the name of the child, since 2958 -- we can't have dots in a nested program name. Note that we do not 2959 -- include the %b at the end of the unit name. 2960 2961 for J in reverse 1 .. Name_Len - 2 loop 2962 if J = 1 or else Name_Buffer (J - 1) = '.' then 2963 return Name_Buffer (J .. Name_Len - 2); 2964 end if; 2965 end loop; 2966 2967 raise Program_Error; -- impossible exit 2968 2969 -- Case where "main" is to be used as default 2970 2971 else 2972 return "main"; 2973 end if; 2974 end Get_Main_Name; 2975 2976 --------------------- 2977 -- Get_WC_Encoding -- 2978 --------------------- 2979 2980 function Get_WC_Encoding return Character is 2981 begin 2982 -- If encoding method specified by -W switch, then return it 2983 2984 if Wide_Character_Encoding_Method_Specified then 2985 return WC_Encoding_Letters (Wide_Character_Encoding_Method); 2986 2987 -- If no main program, and not specified, set brackets, we really have 2988 -- no better choice. If some other encoding is required when there is 2989 -- no main, it must be set explicitly using -Wx. 2990 2991 -- Note: if the ALI file always passed the wide character encoding of 2992 -- every file, then we could use the encoding of the initial specified 2993 -- file, but this information is passed only for potential main 2994 -- programs. We could fix this sometime, but it is a very minor point 2995 -- (wide character default encoding for [Wide_[Wide_]]Text_IO when there 2996 -- is no main program). 2997 2998 elsif No_Main_Subprogram then 2999 return 'b'; 3000 3001 -- Otherwise if there is a main program, take encoding from it 3002 3003 else 3004 return ALIs.Table (ALIs.First).WC_Encoding; 3005 end if; 3006 end Get_WC_Encoding; 3007 3008 ------------------- 3009 -- Has_Finalizer -- 3010 ------------------- 3011 3012 function Has_Finalizer (Elab_Order : Unit_Id_Array) return Boolean is 3013 U : Unit_Record; 3014 Unum : Unit_Id; 3015 3016 begin 3017 for E in reverse Elab_Order'Range loop 3018 Unum := Elab_Order (E); 3019 U := Units.Table (Unum); 3020 3021 -- We are only interested in non-generic packages 3022 3023 if U.Unit_Kind = 'p' 3024 and then U.Has_Finalizer 3025 and then not U.Is_Generic 3026 and then not U.No_Elab 3027 then 3028 return True; 3029 end if; 3030 end loop; 3031 3032 return False; 3033 end Has_Finalizer; 3034 3035 ---------- 3036 -- Hash -- 3037 ---------- 3038 3039 function Hash (Nam : Name_Id) return Header_Num is 3040 begin 3041 return Int (Nam - Names_Low_Bound) rem Header_Num'Last; 3042 end Hash; 3043 3044 ---------------------- 3045 -- Lt_Linker_Option -- 3046 ---------------------- 3047 3048 function Lt_Linker_Option (Op1 : Natural; Op2 : Natural) return Boolean is 3049 begin 3050 -- Sort internal files last 3051 3052 if Linker_Options.Table (Op1).Internal_File 3053 /= 3054 Linker_Options.Table (Op2).Internal_File 3055 then 3056 -- Note: following test uses False < True 3057 3058 return Linker_Options.Table (Op1).Internal_File 3059 < 3060 Linker_Options.Table (Op2).Internal_File; 3061 3062 -- If both internal or both non-internal, sort according to the 3063 -- elaboration position. A unit that is elaborated later should come 3064 -- earlier in the linker options list. 3065 3066 else 3067 return Units.Table (Linker_Options.Table (Op1).Unit).Elab_Position 3068 > 3069 Units.Table (Linker_Options.Table (Op2).Unit).Elab_Position; 3070 end if; 3071 end Lt_Linker_Option; 3072 3073 ------------------------ 3074 -- Move_Linker_Option -- 3075 ------------------------ 3076 3077 procedure Move_Linker_Option (From : Natural; To : Natural) is 3078 begin 3079 Linker_Options.Table (To) := Linker_Options.Table (From); 3080 end Move_Linker_Option; 3081 3082 ---------------------------- 3083 -- Resolve_Binder_Options -- 3084 ---------------------------- 3085 3086 procedure Resolve_Binder_Options (Elab_Order : Unit_Id_Array) is 3087 procedure Check_Package (Var : in out Boolean; Name : String); 3088 -- Set Var to true iff the current identifier in Namet is Name. Do 3089 -- nothing if it doesn't match. This procedure is just a helper to 3090 -- avoid explicitly dealing with length. 3091 3092 ------------------- 3093 -- Check_Package -- 3094 ------------------- 3095 3096 procedure Check_Package (Var : in out Boolean; Name : String) is 3097 begin 3098 if Name_Len = Name'Length 3099 and then Name_Buffer (1 .. Name_Len) = Name 3100 then 3101 Var := True; 3102 end if; 3103 end Check_Package; 3104 3105 -- Start of processing for Resolve_Binder_Options 3106 3107 begin 3108 for E in Elab_Order'Range loop 3109 Get_Name_String (Units.Table (Elab_Order (E)).Uname); 3110 3111 -- This is not a perfect approach, but is the current protocol 3112 -- between the run-time and the binder to indicate that tasking is 3113 -- used: System.OS_Interface should always be used by any tasking 3114 -- application. 3115 3116 Check_Package (With_GNARL, "system.os_interface%s"); 3117 3118 -- Ditto for the use of restricted tasking 3119 3120 Check_Package 3121 (System_Tasking_Restricted_Stages_Used, 3122 "system.tasking.restricted.stages%s"); 3123 3124 -- Ditto for the use of interrupts 3125 3126 Check_Package (System_Interrupts_Used, "system.interrupts%s"); 3127 3128 -- Ditto for the use of dispatching domains 3129 3130 Check_Package 3131 (Dispatching_Domains_Used, 3132 "system.multiprocessors.dispatching_domains%s"); 3133 3134 -- Ditto for the use of restrictions 3135 3136 Check_Package (System_Restrictions_Used, "system.restrictions%s"); 3137 3138 -- Ditto for the use of System.Secondary_Stack 3139 3140 Check_Package 3141 (System_Secondary_Stack_Package_In_Closure, 3142 "system.secondary_stack%s"); 3143 3144 -- Ditto for use of an SMP bareboard runtime 3145 3146 Check_Package (System_BB_CPU_Primitives_Multiprocessors_Used, 3147 "system.bb.cpu_primitives.multiprocessors%s"); 3148 3149 -- Ditto for System.Version_Control, which is used for Version and 3150 -- Body_Version attributes. 3151 3152 Check_Package (System_Version_Control_Used, 3153 "system.version_control%s"); 3154 end loop; 3155 end Resolve_Binder_Options; 3156 3157 ------------------ 3158 -- Set_Bind_Env -- 3159 ------------------ 3160 3161 procedure Set_Bind_Env (Key, Value : String) is 3162 begin 3163 -- The lengths of Key and Value are stored as single bytes 3164 3165 if Key'Length > 255 then 3166 Osint.Fail ("bind environment key """ & Key & """ too long"); 3167 end if; 3168 3169 if Value'Length > 255 then 3170 Osint.Fail ("bind environment value """ & Value & """ too long"); 3171 end if; 3172 3173 Bind_Environment.Set (Name_Find (Key), Name_Find (Value)); 3174 end Set_Bind_Env; 3175 3176 ----------------- 3177 -- Set_Boolean -- 3178 ----------------- 3179 3180 procedure Set_Boolean (B : Boolean) is 3181 False_Str : constant String := "False"; 3182 True_Str : constant String := "True"; 3183 3184 begin 3185 if B then 3186 Statement_Buffer (Stm_Last + 1 .. Stm_Last + True_Str'Length) := 3187 True_Str; 3188 Stm_Last := Stm_Last + True_Str'Length; 3189 else 3190 Statement_Buffer (Stm_Last + 1 .. Stm_Last + False_Str'Length) := 3191 False_Str; 3192 Stm_Last := Stm_Last + False_Str'Length; 3193 end if; 3194 end Set_Boolean; 3195 3196 -------------- 3197 -- Set_Char -- 3198 -------------- 3199 3200 procedure Set_Char (C : Character) is 3201 begin 3202 Stm_Last := Stm_Last + 1; 3203 Statement_Buffer (Stm_Last) := C; 3204 end Set_Char; 3205 3206 ------------- 3207 -- Set_Int -- 3208 ------------- 3209 3210 procedure Set_Int (N : Int) is 3211 begin 3212 if N < 0 then 3213 Set_String ("-"); 3214 Set_Int (-N); 3215 3216 else 3217 if N > 9 then 3218 Set_Int (N / 10); 3219 end if; 3220 3221 Stm_Last := Stm_Last + 1; 3222 Statement_Buffer (Stm_Last) := 3223 Character'Val (N mod 10 + Character'Pos ('0')); 3224 end if; 3225 end Set_Int; 3226 3227 ------------------------- 3228 -- Set_IS_Pragma_Table -- 3229 ------------------------- 3230 3231 procedure Set_IS_Pragma_Table is 3232 begin 3233 for F in ALIs.First .. ALIs.Last loop 3234 for K in ALIs.Table (F).First_Interrupt_State .. 3235 ALIs.Table (F).Last_Interrupt_State 3236 loop 3237 declare 3238 Inum : constant Int := 3239 Interrupt_States.Table (K).Interrupt_Id; 3240 Stat : constant Character := 3241 Interrupt_States.Table (K).Interrupt_State; 3242 3243 begin 3244 while IS_Pragma_Settings.Last < Inum loop 3245 IS_Pragma_Settings.Append ('n'); 3246 end loop; 3247 3248 IS_Pragma_Settings.Table (Inum) := Stat; 3249 end; 3250 end loop; 3251 end loop; 3252 end Set_IS_Pragma_Table; 3253 3254 --------------------------- 3255 -- Set_Main_Program_Name -- 3256 --------------------------- 3257 3258 procedure Set_Main_Program_Name is 3259 begin 3260 -- Note that name has %b on the end which we ignore 3261 3262 -- First we output the initial _ada_ since we know that the main program 3263 -- is a library level subprogram. 3264 3265 Set_String ("_ada_"); 3266 3267 -- Copy name, changing dots to double underscores 3268 3269 for J in 1 .. Name_Len - 2 loop 3270 if Name_Buffer (J) = '.' then 3271 Set_String ("__"); 3272 else 3273 Set_Char (Name_Buffer (J)); 3274 end if; 3275 end loop; 3276 end Set_Main_Program_Name; 3277 3278 --------------------- 3279 -- Set_Name_Buffer -- 3280 --------------------- 3281 3282 procedure Set_Name_Buffer is 3283 begin 3284 for J in 1 .. Name_Len loop 3285 Set_Char (Name_Buffer (J)); 3286 end loop; 3287 end Set_Name_Buffer; 3288 3289 ------------------------- 3290 -- Set_PSD_Pragma_Table -- 3291 ------------------------- 3292 3293 procedure Set_PSD_Pragma_Table is 3294 begin 3295 for F in ALIs.First .. ALIs.Last loop 3296 for K in ALIs.Table (F).First_Specific_Dispatching .. 3297 ALIs.Table (F).Last_Specific_Dispatching 3298 loop 3299 declare 3300 DTK : Specific_Dispatching_Record 3301 renames Specific_Dispatching.Table (K); 3302 3303 begin 3304 while PSD_Pragma_Settings.Last < DTK.Last_Priority loop 3305 PSD_Pragma_Settings.Append ('F'); 3306 end loop; 3307 3308 for Prio in DTK.First_Priority .. DTK.Last_Priority loop 3309 PSD_Pragma_Settings.Table (Prio) := DTK.Dispatching_Policy; 3310 end loop; 3311 end; 3312 end loop; 3313 end loop; 3314 end Set_PSD_Pragma_Table; 3315 3316 ---------------- 3317 -- Set_String -- 3318 ---------------- 3319 3320 procedure Set_String (S : String) is 3321 begin 3322 Statement_Buffer (Stm_Last + 1 .. Stm_Last + S'Length) := S; 3323 Stm_Last := Stm_Last + S'Length; 3324 end Set_String; 3325 3326 ------------------------ 3327 -- Set_String_Replace -- 3328 ------------------------ 3329 3330 procedure Set_String_Replace (S : String) is 3331 begin 3332 Statement_Buffer (Stm_Last - S'Length + 1 .. Stm_Last) := S; 3333 end Set_String_Replace; 3334 3335 ------------------- 3336 -- Set_Unit_Name -- 3337 ------------------- 3338 3339 procedure Set_Unit_Name is 3340 begin 3341 for J in 1 .. Name_Len - 2 loop 3342 if Name_Buffer (J) = '.' then 3343 Set_String ("__"); 3344 else 3345 Set_Char (Name_Buffer (J)); 3346 end if; 3347 end loop; 3348 end Set_Unit_Name; 3349 3350 --------------------- 3351 -- Set_Unit_Number -- 3352 --------------------- 3353 3354 procedure Set_Unit_Number (U : Unit_Id) is 3355 Num_Units : constant Nat := Nat (Units.Last) - Nat (Unit_Id'First); 3356 Unum : constant Nat := Nat (U) - Nat (Unit_Id'First); 3357 3358 begin 3359 if Num_Units >= 10 and then Unum < 10 then 3360 Set_Char ('0'); 3361 end if; 3362 3363 if Num_Units >= 100 and then Unum < 100 then 3364 Set_Char ('0'); 3365 end if; 3366 3367 Set_Int (Unum); 3368 end Set_Unit_Number; 3369 3370 --------------------- 3371 -- Write_Bind_Line -- 3372 --------------------- 3373 3374 procedure Write_Bind_Line (S : String) is 3375 begin 3376 -- Need to strip trailing LF from S 3377 3378 WBI (S (S'First .. S'Last - 1)); 3379 end Write_Bind_Line; 3380 3381 ---------------------------- 3382 -- Write_Statement_Buffer -- 3383 ---------------------------- 3384 3385 procedure Write_Statement_Buffer is 3386 begin 3387 WBI (Statement_Buffer (1 .. Stm_Last)); 3388 Stm_Last := 0; 3389 end Write_Statement_Buffer; 3390 3391 procedure Write_Statement_Buffer (S : String) is 3392 begin 3393 Set_String (S); 3394 Write_Statement_Buffer; 3395 end Write_Statement_Buffer; 3396 3397end Bindgen; 3398