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gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- B I N D G E N -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2017, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING3. If not, go to -- -- http://www.gnu.org/licenses for a complete copy of the license. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with ALI; use ALI; with Casing; use Casing; with Fname; use Fname; with Gnatvsn; use Gnatvsn; with Hostparm; with Namet; use Namet; with Opt; use Opt; with Osint; use Osint; with Osint.B; use Osint.B; with Output; use Output; with Rident; use Rident; with Stringt; use Stringt; with Table; with Targparm; use Targparm; with Types; use Types; with System.OS_Lib; with System.WCh_Con; use System.WCh_Con; with GNAT.Heap_Sort_A; use GNAT.Heap_Sort_A; with GNAT.HTable; package body Bindgen is Statement_Buffer : String (1 .. 1000); -- Buffer used for constructing output statements Stm_Last : Natural := 0; -- Stm_Last location in Statement_Buffer currently set With_GNARL : Boolean := False; -- Flag which indicates whether the program uses the GNARL library -- (presence of the unit System.OS_Interface) Num_Elab_Calls : Nat := 0; -- Number of generated calls to elaboration routines Num_Primary_Stacks : Int := 0; -- Number of default-sized primary stacks the binder needs to allocate for -- task objects declared in the program. Num_Sec_Stacks : Int := 0; -- Number of default-sized primary stacks the binder needs to allocate for -- task objects declared in the program. System_Restrictions_Used : Boolean := False; -- Flag indicating whether the unit System.Restrictions is in the closure -- of the partition. This is set by Resolve_Binder_Options, and is used -- to determine whether or not to initialize the restrictions information -- in the body of the binder generated file (we do not want to do this -- unconditionally, since it drags in the System.Restrictions unit -- unconditionally, which is unpleasand, especially for ZFP etc.) Dispatching_Domains_Used : Boolean := False; -- Flag indicating whether multiprocessor dispatching domains are used in -- the closure of the partition. This is set by Resolve_Binder_Options, and -- is used to call the routine to disallow the creation of new dispatching -- domains just before calling the main procedure from the environment -- task. System_Secondary_Stack_Used : Boolean := False; -- Flag indicating whether the unit System.Secondary_Stack is in the -- closure of the partition. This is set by Resolve_Binder_Options, and -- is used to initialize the package in cases where the run-time brings -- in package but the secondary stack is not used. System_Tasking_Restricted_Stages_Used : Boolean := False; -- Flag indicating whether the unit System.Tasking.Restricted.Stages is in -- the closure of the partition. This is set by Resolve_Binder_Options, -- and it used to call a routine to active all the tasks at the end of -- the elaboration when partition elaboration policy is sequential. System_Interrupts_Used : Boolean := False; -- Flag indicating whether the unit System.Interrups is in the closure of -- the partition. This is set by Resolve_Binder_Options, and it used to -- attach interrupt handlers at the end of the elaboration when partition -- elaboration policy is sequential. System_BB_CPU_Primitives_Multiprocessors_Used : Boolean := False; -- Flag indicating whether unit System.BB.CPU_Primitives.Multiprocessors -- is in the closure of the partition. This is set by procedure -- Resolve_Binder_Options, and it is used to call a procedure that starts -- slave processors. System_Version_Control_Used : Boolean := False; -- Flag indicating whether unit System.Version_Control is in the closure. -- This unit is implicitly withed by the compiler when Version or -- Body_Version attributes are used. If the package is not in the closure, -- the version definitions can be removed. Lib_Final_Built : Boolean := False; -- Flag indicating whether the finalize_library rountine has been built Bind_Env_String_Built : Boolean := False; -- Flag indicating whether a bind environment string has been built CodePeer_Wrapper_Name : constant String := "call_main_subprogram"; -- For CodePeer, introduce a wrapper subprogram which calls the -- user-defined main subprogram. ---------------------------------- -- Interface_State Pragma Table -- ---------------------------------- -- This table assembles the interface state pragma information from -- all the units in the partition. Note that Bcheck has already checked -- that the information is consistent across units. The entries -- in this table are n/u/r/s for not set/user/runtime/system. package IS_Pragma_Settings is new Table.Table (Table_Component_Type => Character, Table_Index_Type => Int, Table_Low_Bound => 0, Table_Initial => 100, Table_Increment => 200, Table_Name => "IS_Pragma_Settings"); -- This table assembles the Priority_Specific_Dispatching pragma -- information from all the units in the partition. Note that Bcheck has -- already checked that the information is consistent across units. -- The entries in this table are the upper case first character of the -- policy name, e.g. 'F' for FIFO_Within_Priorities. package PSD_Pragma_Settings is new Table.Table (Table_Component_Type => Character, Table_Index_Type => Int, Table_Low_Bound => 0, Table_Initial => 100, Table_Increment => 200, Table_Name => "PSD_Pragma_Settings"); ---------------------------- -- Bind_Environment Table -- ---------------------------- subtype Header_Num is Int range 0 .. 36; function Hash (Nam : Name_Id) return Header_Num; package Bind_Environment is new GNAT.HTable.Simple_HTable (Header_Num => Header_Num, Element => Name_Id, No_Element => No_Name, Key => Name_Id, Hash => Hash, Equal => "="); ---------------------- -- Run-Time Globals -- ---------------------- -- This section documents the global variables that are set from the -- generated binder file. -- Main_Priority : Integer; -- Time_Slice_Value : Integer; -- Heap_Size : Natural; -- WC_Encoding : Character; -- Locking_Policy : Character; -- Queuing_Policy : Character; -- Task_Dispatching_Policy : Character; -- Priority_Specific_Dispatching : System.Address; -- Num_Specific_Dispatching : Integer; -- Restrictions : System.Address; -- Interrupt_States : System.Address; -- Num_Interrupt_States : Integer; -- Unreserve_All_Interrupts : Integer; -- Exception_Tracebacks : Integer; -- Exception_Tracebacks_Symbolic : Integer; -- Detect_Blocking : Integer; -- Default_Stack_Size : Integer; -- Default_Secondary_Stack_Size : System.Parameters.Size_Type; -- Leap_Seconds_Support : Integer; -- Main_CPU : Integer; -- Default_Sized_SS_Pool : System.Address; -- Binder_Sec_Stacks_Count : Natural; -- Main_Priority is the priority value set by pragma Priority in the main -- program. If no such pragma is present, the value is -1. -- Time_Slice_Value is the time slice value set by pragma Time_Slice in the -- main program, or by the use of a -Tnnn parameter for the binder (if both -- are present, the binder value overrides). The value is in milliseconds. -- A value of zero indicates that time slicing should be suppressed. If no -- pragma is present, and no -T switch was used, the value is -1. -- WC_Encoding shows the wide character encoding method used for the main -- program. This is one of the encoding letters defined in -- System.WCh_Con.WC_Encoding_Letters. -- Locking_Policy is a space if no locking policy was specified for the -- partition. If a locking policy was specified, the value is the upper -- case first character of the locking policy name, for example, 'C' for -- Ceiling_Locking. -- Queuing_Policy is a space if no queuing policy was specified for the -- partition. If a queuing policy was specified, the value is the upper -- case first character of the queuing policy name for example, 'F' for -- FIFO_Queuing. -- Task_Dispatching_Policy is a space if no task dispatching policy was -- specified for the partition. If a task dispatching policy was specified, -- the value is the upper case first character of the policy name, e.g. 'F' -- for FIFO_Within_Priorities. -- Priority_Specific_Dispatching is the address of a string used to store -- the task dispatching policy specified for the different priorities in -- the partition. The length of this string is determined by the last -- priority for which such a pragma applies (the string will be a null -- string if no specific dispatching policies were used). If pragma were -- present, the entries apply to the priorities in sequence from the first -- priority. The value stored is the upper case first character of the -- policy name, or 'F' (for FIFO_Within_Priorities) as the default value -- for those priority ranges not specified. -- Num_Specific_Dispatching is length of the Priority_Specific_Dispatching -- string. It will be set to zero if no Priority_Specific_Dispatching -- pragmas are present. -- Restrictions is the address of a null-terminated string specifying the -- restrictions information for the partition. The format is identical to -- that of the parameter string found on R lines in ali files (see Lib.Writ -- spec in lib-writ.ads for full details). The difference is that in this -- context the values are the cumulative ones for the entire partition. -- Interrupt_States is the address of a string used to specify the -- cumulative results of Interrupt_State pragmas used in the partition. -- The length of this string is determined by the last interrupt for which -- such a pragma is given (the string will be a null string if no pragmas -- were used). If pragma were present the entries apply to the interrupts -- in sequence from the first interrupt, and are set to one of four -- possible settings: 'n' for not specified, 'u' for user, 'r' for run -- time, 's' for system, see description of Interrupt_State pragma for -- further details. -- Num_Interrupt_States is the length of the Interrupt_States string. It -- will be set to zero if no Interrupt_State pragmas are present. -- Unreserve_All_Interrupts is set to one if at least one unit in the -- partition had a pragma Unreserve_All_Interrupts, and zero otherwise. -- Exception_Tracebacks is set to one if the -Ea or -E parameter was -- present in the bind and to zero otherwise. Note that on some targets -- exception tracebacks are provided by default, so a value of zero for -- this parameter does not necessarily mean no trace backs are available. -- Exception_Tracebacks_Symbolic is set to one if the -Es parameter was -- present in the bind and to zero otherwise. -- Detect_Blocking indicates whether pragma Detect_Blocking is active or -- not. A value of zero indicates that the pragma is not present, while a -- value of 1 signals its presence in the partition. -- Default_Stack_Size is the default stack size used when creating an Ada -- task with no explicit Storage_Size clause. -- Default_Secondary_Stack_Size is the default secondary stack size used -- when creating an Ada task with no explicit Secondary_Stack_Size clause. -- Leap_Seconds_Support denotes whether leap seconds have been enabled or -- disabled. A value of zero indicates that leap seconds are turned "off", -- while a value of one signifies "on" status. -- Main_CPU is the processor set by pragma CPU in the main program. If no -- such pragma is present, the value is -1. -- Default_Sized_SS_Pool is set to the address of the default-sized -- secondary stacks array generated by the binder. This pool of stacks is -- generated when either the restriction No_Implicit_Heap_Allocations -- or No_Implicit_Task_Allocations is active. -- Binder_Sec_Stacks_Count is the number of generated secondary stacks in -- the Default_Sized_SS_Pool. procedure WBI (Info : String) renames Osint.B.Write_Binder_Info; -- Convenient shorthand used throughout ----------------------- -- Local Subprograms -- ----------------------- procedure Gen_Adainit (Elab_Order : Unit_Id_Array); -- Generates the Adainit procedure procedure Gen_Adafinal; -- Generate the Adafinal procedure procedure Gen_Bind_Env_String; -- Generate the bind environment buffer procedure Gen_CodePeer_Wrapper; -- For CodePeer, generate wrapper which calls user-defined main subprogram procedure Gen_Elab_Calls (Elab_Order : Unit_Id_Array); -- Generate sequence of elaboration calls procedure Gen_Elab_Externals (Elab_Order : Unit_Id_Array); -- Generate sequence of external declarations for elaboration procedure Gen_Elab_Order (Elab_Order : Unit_Id_Array); -- Generate comments showing elaboration order chosen procedure Gen_Finalize_Library (Elab_Order : Unit_Id_Array); -- Generate a sequence of finalization calls to elaborated packages procedure Gen_Main; -- Generate procedure main procedure Gen_Object_Files_Options (Elab_Order : Unit_Id_Array); -- Output comments containing a list of the full names of the object -- files to be linked and the list of linker options supplied by -- Linker_Options pragmas in the source. procedure Gen_Output_File_Ada (Filename : String; Elab_Order : Unit_Id_Array); -- Generate Ada output file procedure Gen_Restrictions; -- Generate initialization of restrictions variable procedure Gen_Versions; -- Output series of definitions for unit versions function Get_Ada_Main_Name return String; -- This function is used for the Ada main output to compute a usable name -- for the generated main program. The normal main program name is -- Ada_Main, but this won't work if the user has a unit with this name. -- This function tries Ada_Main first, and if there is such a clash, then -- it tries Ada_Name_01, Ada_Name_02 ... Ada_Name_99 in sequence. function Get_Main_Unit_Name (S : String) return String; -- Return the main unit name corresponding to S by replacing '.' with '_' function Get_Main_Name return String; -- This function is used in the main output case to compute the correct -- external main program. It is "main" by default, unless the flag -- Use_Ada_Main_Program_Name_On_Target is set, in which case it is the name -- of the Ada main name without the "_ada". This default can be overridden -- explicitly using the -Mname binder switch. function Get_WC_Encoding return Character; -- Return wide character encoding method to set as WC_Encoding in output. -- If -W has been used, returns the specified encoding, otherwise returns -- the encoding method used for the main program source. If there is no -- main program source (-z switch used), returns brackets ('b'). function Has_Finalizer (Elab_Order : Unit_Id_Array) return Boolean; -- Determine whether the current unit has at least one library-level -- finalizer. function Lt_Linker_Option (Op1 : Natural; Op2 : Natural) return Boolean; -- Compare linker options, when sorting, first according to -- Is_Internal_File (internal files come later) and then by -- elaboration order position (latest to earliest). procedure Move_Linker_Option (From : Natural; To : Natural); -- Move routine for sorting linker options procedure Resolve_Binder_Options (Elab_Order : Unit_Id_Array); -- Set the value of With_GNARL procedure Set_Char (C : Character); -- Set given character in Statement_Buffer at the Stm_Last + 1 position -- and increment Stm_Last by one to reflect the stored character. procedure Set_Int (N : Int); -- Set given value in decimal in Statement_Buffer with no spaces starting -- at the Stm_Last + 1 position, and updating Stm_Last past the value. A -- minus sign is output for a negative value. procedure Set_Boolean (B : Boolean); -- Set given boolean value in Statement_Buffer at the Stm_Last + 1 position -- and update Stm_Last past the value. procedure Set_IS_Pragma_Table; -- Initializes contents of IS_Pragma_Settings table from ALI table procedure Set_Main_Program_Name; -- Given the main program name in Name_Buffer (length in Name_Len) generate -- the name of the routine to be used in the call. The name is generated -- starting at Stm_Last + 1, and Stm_Last is updated past it. procedure Set_Name_Buffer; -- Set the value stored in positions 1 .. Name_Len of the Name_Buffer procedure Set_PSD_Pragma_Table; -- Initializes contents of PSD_Pragma_Settings table from ALI table procedure Set_String (S : String); -- Sets characters of given string in Statement_Buffer, starting at the -- Stm_Last + 1 position, and updating last past the string value. procedure Set_String_Replace (S : String); -- Replaces the last S'Length characters in the Statement_Buffer with the -- characters of S. The caller must ensure that these characters do in fact -- exist in the Statement_Buffer. procedure Set_Unit_Name; -- Given a unit name in the Name_Buffer, copy it into Statement_Buffer, -- starting at the Stm_Last + 1 position and update Stm_Last past the -- value. Each dot (.) will be qualified into double underscores (__). procedure Set_Unit_Number (U : Unit_Id); -- Sets unit number (first unit is 1, leading zeroes output to line up all -- output unit numbers nicely as required by the value, and by the total -- number of units. procedure Write_Statement_Buffer; -- Write out contents of statement buffer up to Stm_Last, and reset -- Stm_Last to 0. procedure Write_Statement_Buffer (S : String); -- First writes its argument (using Set_String (S)), then writes out the -- contents of statement buffer up to Stm_Last, and resets Stm_Last to 0. procedure Write_Bind_Line (S : String); -- Write S (an LF-terminated string) to the binder file (for use with -- Set_Special_Output). ------------------ -- Gen_Adafinal -- ------------------ procedure Gen_Adafinal is begin WBI (" procedure " & Ada_Final_Name.all & " is"); -- Call s_stalib_adafinal to await termination of tasks and so on. We -- want to do this if there is a main program, either in Ada or in some -- other language. (Note that Bind_Main_Program is True for Ada mains, -- but False for mains in other languages.) We do not want to do this if -- we're binding a library. if not Bind_For_Library and not CodePeer_Mode then WBI (" procedure s_stalib_adafinal;"); Set_String (" pragma Import (C, s_stalib_adafinal, "); Set_String ("""system__standard_library__adafinal"");"); Write_Statement_Buffer; end if; WBI (""); WBI (" procedure Runtime_Finalize;"); WBI (" pragma Import (C, Runtime_Finalize, " & """__gnat_runtime_finalize"");"); WBI (""); WBI (" begin"); if not CodePeer_Mode then WBI (" if not Is_Elaborated then"); WBI (" return;"); WBI (" end if;"); WBI (" Is_Elaborated := False;"); end if; WBI (" Runtime_Finalize;"); -- By default (real targets), finalization is done differently depending -- on whether this is the main program or a library. if not CodePeer_Mode then if not Bind_For_Library then WBI (" s_stalib_adafinal;"); elsif Lib_Final_Built then WBI (" finalize_library;"); else WBI (" null;"); end if; -- Pragma Import C cannot be used on virtual targets, therefore call the -- runtime finalization routine directly in CodePeer mode, where -- imported functions are ignored. else WBI (" System.Standard_Library.Adafinal;"); end if; WBI (" end " & Ada_Final_Name.all & ";"); WBI (""); end Gen_Adafinal; ----------------- -- Gen_Adainit -- ----------------- procedure Gen_Adainit (Elab_Order : Unit_Id_Array) is Main_Priority : Int renames ALIs.Table (ALIs.First).Main_Priority; Main_CPU : Int renames ALIs.Table (ALIs.First).Main_CPU; begin -- Declare the access-to-subprogram type used for initialization of -- of __gnat_finalize_library_objects. This is declared at library -- level for compatibility with the type used in System.Soft_Links. -- The import of the soft link which performs library-level object -- finalization does not work for CodePeer, so regular Ada is used in -- that case. For restricted run-time libraries (ZFP and Ravenscar) -- tasks are non-terminating, so we do not want finalization. if not Suppress_Standard_Library_On_Target and then not CodePeer_Mode and then not Configurable_Run_Time_On_Target then WBI (" type No_Param_Proc is access procedure;"); WBI (""); end if; WBI (" procedure " & Ada_Init_Name.all & " is"); -- In CodePeer mode, simplify adainit procedure by only calling -- elaboration procedures. if CodePeer_Mode then WBI (" begin"); -- If the standard library is suppressed, then the only global variables -- that might be needed (by the Ravenscar profile) are the priority and -- the processor for the environment task. elsif Suppress_Standard_Library_On_Target then if Main_Priority /= No_Main_Priority then WBI (" Main_Priority : Integer;"); WBI (" pragma Import (C, Main_Priority," & " ""__gl_main_priority"");"); WBI (""); end if; if Main_CPU /= No_Main_CPU then WBI (" Main_CPU : Integer;"); WBI (" pragma Import (C, Main_CPU," & " ""__gl_main_cpu"");"); WBI (""); end if; if System_Interrupts_Used and then Partition_Elaboration_Policy_Specified = 'S' then WBI (" procedure Install_Restricted_Handlers_Sequential;"); WBI (" pragma Import (C," & "Install_Restricted_Handlers_Sequential," & " ""__gnat_attach_all_handlers"");"); WBI (""); end if; if System_Tasking_Restricted_Stages_Used and then Partition_Elaboration_Policy_Specified = 'S' then WBI (" Partition_Elaboration_Policy : Character;"); WBI (" pragma Import (C, Partition_Elaboration_Policy," & " ""__gnat_partition_elaboration_policy"");"); WBI (""); WBI (" procedure Activate_All_Tasks_Sequential;"); WBI (" pragma Import (C, Activate_All_Tasks_Sequential," & " ""__gnat_activate_all_tasks"");"); WBI (""); end if; if System_BB_CPU_Primitives_Multiprocessors_Used then WBI (" procedure Start_Slave_CPUs;"); WBI (" pragma Import (C, Start_Slave_CPUs," & " ""__gnat_start_slave_cpus"");"); WBI (""); end if; -- A restricted run-time may attempt to initialize the main task's -- secondary stack even if the stack is not used. Consequently, -- the binder needs to initialize Binder_Sec_Stacks_Count anytime -- System.Secondary_Stack is in the enclosure of the partition. if System_Secondary_Stack_Used then WBI (" Binder_Sec_Stacks_Count : Natural;"); WBI (" pragma Import (Ada, Binder_Sec_Stacks_Count, " & """__gnat_binder_ss_count"");"); WBI (""); end if; if Sec_Stack_Used then WBI (" Default_Secondary_Stack_Size : " & "System.Parameters.Size_Type;"); WBI (" pragma Import (C, Default_Secondary_Stack_Size, " & """__gnat_default_ss_size"");"); WBI (" Default_Sized_SS_Pool : System.Address;"); WBI (" pragma Import (Ada, Default_Sized_SS_Pool, " & """__gnat_default_ss_pool"");"); WBI (""); end if; WBI (" begin"); if Main_Priority /= No_Main_Priority then Set_String (" Main_Priority := "); Set_Int (Main_Priority); Set_Char (';'); Write_Statement_Buffer; end if; if Main_CPU /= No_Main_CPU then Set_String (" Main_CPU := "); Set_Int (Main_CPU); Set_Char (';'); Write_Statement_Buffer; end if; if System_Tasking_Restricted_Stages_Used and then Partition_Elaboration_Policy_Specified = 'S' then Set_String (" Partition_Elaboration_Policy := '"); Set_Char (Partition_Elaboration_Policy_Specified); Set_String ("';"); Write_Statement_Buffer; end if; if Main_Priority = No_Main_Priority and then Main_CPU = No_Main_CPU and then not System_Tasking_Restricted_Stages_Used then WBI (" null;"); end if; -- Generate default-sized secondary stack pool and set secondary -- stack globals. if Sec_Stack_Used then -- Elaborate the body of the binder to initialize the default- -- sized secondary stack pool. WBI (""); WBI (" " & Get_Ada_Main_Name & "'Elab_Body;"); -- Generate the default-sized secondary stack pool and set the -- related secondary stack globals. Set_String (" Default_Secondary_Stack_Size := "); if Opt.Default_Sec_Stack_Size /= Opt.No_Stack_Size then Set_Int (Opt.Default_Sec_Stack_Size); else Set_String ("System.Parameters.Runtime_Default_Sec_Stack_Size"); end if; Set_Char (';'); Write_Statement_Buffer; Set_String (" Binder_Sec_Stacks_Count := "); Set_Int (Num_Sec_Stacks); Set_Char (';'); Write_Statement_Buffer; WBI (" Default_Sized_SS_Pool := " & "Sec_Default_Sized_Stacks'Address;"); WBI (""); -- When a restricted run-time initializes the main task's secondary -- stack but the program does not use it, no secondary stack is -- generated. Binder_Sec_Stacks_Count is set to zero so the run-time -- is aware that the lack of pre-allocated secondary stack is -- expected. elsif System_Secondary_Stack_Used then WBI (" Binder_Sec_Stacks_Count := 0;"); end if; -- Normal case (standard library not suppressed). Set all global values -- used by the run time. else WBI (" Main_Priority : Integer;"); WBI (" pragma Import (C, Main_Priority, " & """__gl_main_priority"");"); WBI (" Time_Slice_Value : Integer;"); WBI (" pragma Import (C, Time_Slice_Value, " & """__gl_time_slice_val"");"); WBI (" WC_Encoding : Character;"); WBI (" pragma Import (C, WC_Encoding, ""__gl_wc_encoding"");"); WBI (" Locking_Policy : Character;"); WBI (" pragma Import (C, Locking_Policy, " & """__gl_locking_policy"");"); WBI (" Queuing_Policy : Character;"); WBI (" pragma Import (C, Queuing_Policy, " & """__gl_queuing_policy"");"); WBI (" Task_Dispatching_Policy : Character;"); WBI (" pragma Import (C, Task_Dispatching_Policy, " & """__gl_task_dispatching_policy"");"); WBI (" Priority_Specific_Dispatching : System.Address;"); WBI (" pragma Import (C, Priority_Specific_Dispatching, " & """__gl_priority_specific_dispatching"");"); WBI (" Num_Specific_Dispatching : Integer;"); WBI (" pragma Import (C, Num_Specific_Dispatching, " & """__gl_num_specific_dispatching"");"); WBI (" Main_CPU : Integer;"); WBI (" pragma Import (C, Main_CPU, " & """__gl_main_cpu"");"); WBI (" Interrupt_States : System.Address;"); WBI (" pragma Import (C, Interrupt_States, " & """__gl_interrupt_states"");"); WBI (" Num_Interrupt_States : Integer;"); WBI (" pragma Import (C, Num_Interrupt_States, " & """__gl_num_interrupt_states"");"); WBI (" Unreserve_All_Interrupts : Integer;"); WBI (" pragma Import (C, Unreserve_All_Interrupts, " & """__gl_unreserve_all_interrupts"");"); if Exception_Tracebacks or Exception_Tracebacks_Symbolic then WBI (" Exception_Tracebacks : Integer;"); WBI (" pragma Import (C, Exception_Tracebacks, " & """__gl_exception_tracebacks"");"); if Exception_Tracebacks_Symbolic then WBI (" Exception_Tracebacks_Symbolic : Integer;"); WBI (" pragma Import (C, Exception_Tracebacks_Symbolic, " & """__gl_exception_tracebacks_symbolic"");"); end if; end if; WBI (" Detect_Blocking : Integer;"); WBI (" pragma Import (C, Detect_Blocking, " & """__gl_detect_blocking"");"); WBI (" Default_Stack_Size : Integer;"); WBI (" pragma Import (C, Default_Stack_Size, " & """__gl_default_stack_size"");"); WBI (" Default_Secondary_Stack_Size : " & "System.Parameters.Size_Type;"); WBI (" pragma Import (C, Default_Secondary_Stack_Size, " & """__gnat_default_ss_size"");"); WBI (" Leap_Seconds_Support : Integer;"); WBI (" pragma Import (C, Leap_Seconds_Support, " & """__gl_leap_seconds_support"");"); WBI (" Bind_Env_Addr : System.Address;"); WBI (" pragma Import (C, Bind_Env_Addr, " & """__gl_bind_env_addr"");"); -- Import entry point for elaboration time signal handler -- installation, and indication of if it's been called previously. WBI (""); WBI (" procedure Runtime_Initialize " & "(Install_Handler : Integer);"); WBI (" pragma Import (C, Runtime_Initialize, " & """__gnat_runtime_initialize"");"); -- Import handlers attach procedure for sequential elaboration policy if System_Interrupts_Used and then Partition_Elaboration_Policy_Specified = 'S' then WBI (" procedure Install_Restricted_Handlers_Sequential;"); WBI (" pragma Import (C," & "Install_Restricted_Handlers_Sequential," & " ""__gnat_attach_all_handlers"");"); WBI (""); end if; -- Import task activation procedure for sequential elaboration -- policy. if System_Tasking_Restricted_Stages_Used and then Partition_Elaboration_Policy_Specified = 'S' then WBI (" Partition_Elaboration_Policy : Character;"); WBI (" pragma Import (C, Partition_Elaboration_Policy," & " ""__gnat_partition_elaboration_policy"");"); WBI (""); WBI (" procedure Activate_All_Tasks_Sequential;"); WBI (" pragma Import (C, Activate_All_Tasks_Sequential," & " ""__gnat_activate_all_tasks"");"); end if; -- Import procedure to start slave cpus for bareboard runtime if System_BB_CPU_Primitives_Multiprocessors_Used then WBI (" procedure Start_Slave_CPUs;"); WBI (" pragma Import (C, Start_Slave_CPUs," & " ""__gnat_start_slave_cpus"");"); end if; -- For restricted run-time libraries (ZFP and Ravenscar) -- tasks are non-terminating, so we do not want finalization. if not Configurable_Run_Time_On_Target then WBI (""); WBI (" Finalize_Library_Objects : No_Param_Proc;"); WBI (" pragma Import (C, Finalize_Library_Objects, " & """__gnat_finalize_library_objects"");"); end if; -- Initialize stack limit variable of the environment task if the -- stack check method is stack limit and stack check is enabled. if Stack_Check_Limits_On_Target and then (Stack_Check_Default_On_Target or Stack_Check_Switch_Set) then WBI (""); WBI (" procedure Initialize_Stack_Limit;"); WBI (" pragma Import (C, Initialize_Stack_Limit, " & """__gnat_initialize_stack_limit"");"); end if; -- When dispatching domains are used then we need to signal it -- before calling the main procedure. if Dispatching_Domains_Used then WBI (" procedure Freeze_Dispatching_Domains;"); WBI (" pragma Import"); WBI (" (Ada, Freeze_Dispatching_Domains, " & """__gnat_freeze_dispatching_domains"");"); end if; -- Secondary stack global variables WBI (" Binder_Sec_Stacks_Count : Natural;"); WBI (" pragma Import (Ada, Binder_Sec_Stacks_Count, " & """__gnat_binder_ss_count"");"); WBI (" Default_Sized_SS_Pool : System.Address;"); WBI (" pragma Import (Ada, Default_Sized_SS_Pool, " & """__gnat_default_ss_pool"");"); WBI (""); -- Start of processing for Adainit WBI (" begin"); WBI (" if Is_Elaborated then"); WBI (" return;"); WBI (" end if;"); WBI (" Is_Elaborated := True;"); -- Call System.Elaboration_Allocators.Mark_Start_Of_Elaboration if -- restriction No_Standard_Allocators_After_Elaboration is active. if Cumulative_Restrictions.Set (No_Standard_Allocators_After_Elaboration) then WBI (" System.Elaboration_Allocators." & "Mark_Start_Of_Elaboration;"); end if; -- Generate assignments to initialize globals Set_String (" Main_Priority := "); Set_Int (Main_Priority); Set_Char (';'); Write_Statement_Buffer; Set_String (" Time_Slice_Value := "); if Task_Dispatching_Policy_Specified = 'F' and then ALIs.Table (ALIs.First).Time_Slice_Value = -1 then Set_Int (0); else Set_Int (ALIs.Table (ALIs.First).Time_Slice_Value); end if; Set_Char (';'); Write_Statement_Buffer; Set_String (" WC_Encoding := '"); Set_Char (Get_WC_Encoding); Set_String ("';"); Write_Statement_Buffer; Set_String (" Locking_Policy := '"); Set_Char (Locking_Policy_Specified); Set_String ("';"); Write_Statement_Buffer; Set_String (" Queuing_Policy := '"); Set_Char (Queuing_Policy_Specified); Set_String ("';"); Write_Statement_Buffer; Set_String (" Task_Dispatching_Policy := '"); Set_Char (Task_Dispatching_Policy_Specified); Set_String ("';"); Write_Statement_Buffer; if System_Tasking_Restricted_Stages_Used and then Partition_Elaboration_Policy_Specified = 'S' then Set_String (" Partition_Elaboration_Policy := '"); Set_Char (Partition_Elaboration_Policy_Specified); Set_String ("';"); Write_Statement_Buffer; end if; Gen_Restrictions; WBI (" Priority_Specific_Dispatching :="); WBI (" Local_Priority_Specific_Dispatching'Address;"); Set_String (" Num_Specific_Dispatching := "); Set_Int (PSD_Pragma_Settings.Last + 1); Set_Char (';'); Write_Statement_Buffer; Set_String (" Main_CPU := "); Set_Int (Main_CPU); Set_Char (';'); Write_Statement_Buffer; WBI (" Interrupt_States := Local_Interrupt_States'Address;"); Set_String (" Num_Interrupt_States := "); Set_Int (IS_Pragma_Settings.Last + 1); Set_Char (';'); Write_Statement_Buffer; Set_String (" Unreserve_All_Interrupts := "); if Unreserve_All_Interrupts_Specified then Set_String ("1"); else Set_String ("0"); end if; Set_Char (';'); Write_Statement_Buffer; if Exception_Tracebacks or Exception_Tracebacks_Symbolic then WBI (" Exception_Tracebacks := 1;"); if Exception_Tracebacks_Symbolic then WBI (" Exception_Tracebacks_Symbolic := 1;"); end if; end if; Set_String (" Detect_Blocking := "); if Detect_Blocking then Set_Int (1); else Set_Int (0); end if; Set_String (";"); Write_Statement_Buffer; Set_String (" Default_Stack_Size := "); Set_Int (Default_Stack_Size); Set_String (";"); Write_Statement_Buffer; Set_String (" Leap_Seconds_Support := "); if Leap_Seconds_Support then Set_Int (1); else Set_Int (0); end if; Set_String (";"); Write_Statement_Buffer; if Bind_Env_String_Built then WBI (" Bind_Env_Addr := Bind_Env'Address;"); end if; WBI (""); -- Generate default-sized secondary stack pool and set secondary -- stack globals. if Sec_Stack_Used then -- Elaborate the body of the binder to initialize the default- -- sized secondary stack pool. WBI (" " & Get_Ada_Main_Name & "'Elab_Body;"); -- Generate the default-sized secondary stack pool and set the -- related secondary stack globals. Set_String (" Default_Secondary_Stack_Size := "); if Opt.Default_Sec_Stack_Size /= Opt.No_Stack_Size then Set_Int (Opt.Default_Sec_Stack_Size); else Set_String ("System.Parameters.Runtime_Default_Sec_Stack_Size"); end if; Set_Char (';'); Write_Statement_Buffer; Set_String (" Binder_Sec_Stacks_Count := "); Set_Int (Num_Sec_Stacks); Set_Char (';'); Write_Statement_Buffer; Set_String (" Default_Sized_SS_Pool := "); if Num_Sec_Stacks > 0 then Set_String ("Sec_Default_Sized_Stacks'Address;"); else Set_String ("System.Null_Address;"); end if; Write_Statement_Buffer; WBI (""); end if; -- Generate call to Runtime_Initialize WBI (" Runtime_Initialize (1);"); end if; -- Generate call to set Initialize_Scalar values if active if Initialize_Scalars_Used then WBI (""); Set_String (" System.Scalar_Values.Initialize ('"); Set_Char (Initialize_Scalars_Mode1); Set_String ("', '"); Set_Char (Initialize_Scalars_Mode2); Set_String ("');"); Write_Statement_Buffer; end if; -- Initialize stack limit variable of the environment task if the stack -- check method is stack limit and stack check is enabled. if Stack_Check_Limits_On_Target and then (Stack_Check_Default_On_Target or Stack_Check_Switch_Set) then WBI (""); WBI (" Initialize_Stack_Limit;"); end if; -- On CodePeer, the finalization of library objects is not relevant if CodePeer_Mode then null; -- If this is the main program case, attach finalize_library to the soft -- link. Do it only when not using a restricted run time, in which case -- tasks are non-terminating, so we do not want library-level -- finalization. elsif not Bind_For_Library and then not Configurable_Run_Time_On_Target and then not Suppress_Standard_Library_On_Target then WBI (""); if Lib_Final_Built then Set_String (" Finalize_Library_Objects := "); Set_String ("finalize_library'access;"); else Set_String (" Finalize_Library_Objects := null;"); end if; Write_Statement_Buffer; end if; -- Generate elaboration calls if not CodePeer_Mode then WBI (""); end if; Gen_Elab_Calls (Elab_Order); if not CodePeer_Mode then -- Call System.Elaboration_Allocators.Mark_Start_Of_Elaboration if -- restriction No_Standard_Allocators_After_Elaboration is active. if Cumulative_Restrictions.Set (No_Standard_Allocators_After_Elaboration) then WBI (" System.Elaboration_Allocators.Mark_End_Of_Elaboration;"); end if; -- From this point, no new dispatching domain can be created if Dispatching_Domains_Used then WBI (" Freeze_Dispatching_Domains;"); end if; -- Sequential partition elaboration policy if Partition_Elaboration_Policy_Specified = 'S' then if System_Interrupts_Used then WBI (" Install_Restricted_Handlers_Sequential;"); end if; if System_Tasking_Restricted_Stages_Used then WBI (" Activate_All_Tasks_Sequential;"); end if; end if; if System_BB_CPU_Primitives_Multiprocessors_Used then WBI (" Start_Slave_CPUs;"); end if; end if; WBI (" end " & Ada_Init_Name.all & ";"); WBI (""); end Gen_Adainit; ------------------------- -- Gen_Bind_Env_String -- ------------------------- procedure Gen_Bind_Env_String is procedure Write_Name_With_Len (Nam : Name_Id); -- Write Nam as a string literal, prefixed with one -- character encoding Nam's length. ------------------------- -- Write_Name_With_Len -- ------------------------- procedure Write_Name_With_Len (Nam : Name_Id) is begin Get_Name_String (Nam); Start_String; Store_String_Char (Character'Val (Name_Len)); Store_String_Chars (Name_Buffer (1 .. Name_Len)); Write_String_Table_Entry (End_String); end Write_Name_With_Len; -- Local variables Amp : Character; KN : Name_Id := No_Name; VN : Name_Id := No_Name; -- Start of processing for Gen_Bind_Env_String begin Bind_Environment.Get_First (KN, VN); if VN = No_Name then return; end if; Set_Special_Output (Write_Bind_Line'Access); WBI (" Bind_Env : aliased constant String :="); Amp := ' '; while VN /= No_Name loop Write_Str (" " & Amp & ' '); Write_Name_With_Len (KN); Write_Str (" & "); Write_Name_With_Len (VN); Write_Eol; Bind_Environment.Get_Next (KN, VN); Amp := '&'; end loop; WBI (" & ASCII.NUL;"); Set_Special_Output (null); Bind_Env_String_Built := True; end Gen_Bind_Env_String; -------------------------- -- Gen_CodePeer_Wrapper -- -------------------------- procedure Gen_CodePeer_Wrapper is Callee_Name : constant String := "Ada_Main_Program"; begin if ALIs.Table (ALIs.First).Main_Program = Proc then WBI (" procedure " & CodePeer_Wrapper_Name & " is "); WBI (" begin"); WBI (" " & Callee_Name & ";"); else WBI (" function " & CodePeer_Wrapper_Name & " return Integer is"); WBI (" begin"); WBI (" return " & Callee_Name & ";"); end if; WBI (" end " & CodePeer_Wrapper_Name & ";"); WBI (""); end Gen_CodePeer_Wrapper; -------------------- -- Gen_Elab_Calls -- -------------------- procedure Gen_Elab_Calls (Elab_Order : Unit_Id_Array) is Check_Elab_Flag : Boolean; begin -- Loop through elaboration order entries for E in Elab_Order'Range loop declare Unum : constant Unit_Id := Elab_Order (E); U : Unit_Record renames Units.Table (Unum); Unum_Spec : Unit_Id; -- This is the unit number of the spec that corresponds to -- this entry. It is the same as Unum except when the body -- and spec are different and we are currently processing -- the body, in which case it is the spec (Unum + 1). begin if U.Utype = Is_Body then Unum_Spec := Unum + 1; else Unum_Spec := Unum; end if; -- Nothing to do if predefined unit in no run time mode if No_Run_Time_Mode and then Is_Predefined_File_Name (U.Sfile) then null; -- Likewise if this is an interface to a stand alone library elsif U.SAL_Interface then null; -- Case of no elaboration code elsif U.No_Elab -- In CodePeer mode, we special case subprogram bodies which -- are handled in the 'else' part below, and lead to a call -- to <subp>'Elab_Subp_Body. and then (not CodePeer_Mode -- Test for spec or else U.Utype = Is_Spec or else U.Utype = Is_Spec_Only or else U.Unit_Kind /= 's') then -- In the case of a body with a separate spec, where the -- separate spec has an elaboration entity defined, this is -- where we increment the elaboration entity if one exists. -- Likewise for lone specs with an elaboration entity defined -- despite No_Elaboration_Code, e.g. when requested to preserve -- control flow. if (U.Utype = Is_Body or else U.Utype = Is_Spec_Only) and then Units.Table (Unum_Spec).Set_Elab_Entity and then not CodePeer_Mode then Set_String (" E"); Set_Unit_Number (Unum_Spec); Set_String (" := E"); Set_Unit_Number (Unum_Spec); Set_String (" + 1;"); Write_Statement_Buffer; end if; -- Here if elaboration code is present. If binding a library -- or if there is a non-Ada main subprogram then we generate: -- if uname_E = 0 then -- uname'elab_[spec|body]; -- end if; -- uname_E := uname_E + 1; -- Otherwise, elaboration routines are called unconditionally: -- uname'elab_[spec|body]; -- uname_E := uname_E + 1; -- The uname_E increment is skipped if this is a separate spec, -- since it will be done when we process the body. -- In CodePeer mode, we do not generate any reference to xxx_E -- variables, only calls to 'Elab* subprograms. else -- Check incompatibilities with No_Multiple_Elaboration if not CodePeer_Mode and then Cumulative_Restrictions.Set (No_Multiple_Elaboration) then -- Force_Checking_Of_Elaboration_Flags (-F) not allowed if Force_Checking_Of_Elaboration_Flags then Osint.Fail ("-F (force elaboration checks) switch not allowed " & "with restriction No_Multiple_Elaboration active"); -- Interfacing of libraries not allowed elsif Interface_Library_Unit then Osint.Fail ("binding of interfaced libraries not allowed " & "with restriction No_Multiple_Elaboration active"); -- Non-Ada main program not allowed elsif not Bind_Main_Program then Osint.Fail ("non-Ada main program not allowed " & "with restriction No_Multiple_Elaboration active"); end if; end if; -- OK, see if we need to test elaboration flag Check_Elab_Flag := Units.Table (Unum_Spec).Set_Elab_Entity and then not CodePeer_Mode and then (Force_Checking_Of_Elaboration_Flags or Interface_Library_Unit or not Bind_Main_Program); if Check_Elab_Flag then Set_String (" if E"); Set_Unit_Number (Unum_Spec); Set_String (" = 0 then"); Write_Statement_Buffer; Set_String (" "); end if; Set_String (" "); Get_Decoded_Name_String_With_Brackets (U.Uname); if Name_Buffer (Name_Len) = 's' then Name_Buffer (Name_Len - 1 .. Name_Len + 8) := "'elab_spec"; Name_Len := Name_Len + 8; -- Special case in CodePeer mode for subprogram bodies -- which correspond to CodePeer 'Elab_Subp_Body special -- init procedure. elsif U.Unit_Kind = 's' and CodePeer_Mode then Name_Buffer (Name_Len - 1 .. Name_Len + 13) := "'elab_subp_body"; Name_Len := Name_Len + 13; else Name_Buffer (Name_Len - 1 .. Name_Len + 8) := "'elab_body"; Name_Len := Name_Len + 8; end if; Set_Casing (U.Icasing); Set_Name_Buffer; Set_Char (';'); Write_Statement_Buffer; if Check_Elab_Flag then WBI (" end if;"); end if; if U.Utype /= Is_Spec and then not CodePeer_Mode and then Units.Table (Unum_Spec).Set_Elab_Entity then Set_String (" E"); Set_Unit_Number (Unum_Spec); Set_String (" := E"); Set_Unit_Number (Unum_Spec); Set_String (" + 1;"); Write_Statement_Buffer; end if; end if; end; end loop; end Gen_Elab_Calls; ------------------------ -- Gen_Elab_Externals -- ------------------------ procedure Gen_Elab_Externals (Elab_Order : Unit_Id_Array) is begin if CodePeer_Mode then return; end if; for E in Elab_Order'Range loop declare Unum : constant Unit_Id := Elab_Order (E); U : Unit_Record renames Units.Table (Unum); begin -- Check for Elab_Entity to be set for this unit if U.Set_Elab_Entity -- Don't generate reference for stand alone library and then not U.SAL_Interface -- Don't generate reference for predefined file in No_Run_Time -- mode, since we don't include the object files in this case and then not (No_Run_Time_Mode and then Is_Predefined_File_Name (U.Sfile)) then Get_Name_String (U.Sfile); Set_String (" "); Set_String ("E"); Set_Unit_Number (Unum); Set_String (" : Short_Integer; pragma Import (Ada, E"); Set_Unit_Number (Unum); Set_String (", """); Get_Name_String (U.Uname); Set_Unit_Name; Set_String ("_E"");"); Write_Statement_Buffer; end if; end; end loop; WBI (""); end Gen_Elab_Externals; -------------------- -- Gen_Elab_Order -- -------------------- procedure Gen_Elab_Order (Elab_Order : Unit_Id_Array) is begin WBI (""); WBI (" -- BEGIN ELABORATION ORDER"); for J in Elab_Order'Range loop Set_String (" -- "); Get_Name_String (Units.Table (Elab_Order (J)).Uname); Set_Name_Buffer; Write_Statement_Buffer; end loop; WBI (" -- END ELABORATION ORDER"); end Gen_Elab_Order; -------------------------- -- Gen_Finalize_Library -- -------------------------- procedure Gen_Finalize_Library (Elab_Order : Unit_Id_Array) is procedure Gen_Header; -- Generate the header of the finalization routine ---------------- -- Gen_Header -- ---------------- procedure Gen_Header is begin WBI (" procedure finalize_library is"); WBI (" begin"); end Gen_Header; -- Local variables Count : Int := 1; U : Unit_Record; Uspec : Unit_Record; Unum : Unit_Id; -- Start of processing for Gen_Finalize_Library begin if CodePeer_Mode then return; end if; for E in reverse Elab_Order'Range loop Unum := Elab_Order (E); U := Units.Table (Unum); -- Dealing with package bodies is a little complicated. In such -- cases we must retrieve the package spec since it contains the -- spec of the body finalizer. if U.Utype = Is_Body then Unum := Unum + 1; Uspec := Units.Table (Unum); else Uspec := U; end if; Get_Name_String (Uspec.Uname); -- We are only interested in non-generic packages if U.Unit_Kind /= 'p' or else U.Is_Generic then null; -- That aren't an interface to a stand alone library elsif U.SAL_Interface then null; -- Case of no finalization elsif not U.Has_Finalizer then -- The only case in which we have to do something is if this -- is a body, with a separate spec, where the separate spec -- has a finalizer. In that case, this is where we decrement -- the elaboration entity. if U.Utype = Is_Body and then Uspec.Has_Finalizer then if not Lib_Final_Built then Gen_Header; Lib_Final_Built := True; end if; Set_String (" E"); Set_Unit_Number (Unum); Set_String (" := E"); Set_Unit_Number (Unum); Set_String (" - 1;"); Write_Statement_Buffer; end if; else if not Lib_Final_Built then Gen_Header; Lib_Final_Built := True; end if; -- Generate: -- declare -- procedure F<Count>; Set_String (" declare"); Write_Statement_Buffer; Set_String (" procedure F"); Set_Int (Count); Set_Char (';'); Write_Statement_Buffer; -- Generate: -- pragma Import (Ada, F<Count>, -- "xx__yy__finalize_[body|spec]"); Set_String (" pragma Import (Ada, F"); Set_Int (Count); Set_String (", """); -- Perform name construction Set_Unit_Name; Set_String ("__finalize_"); -- Package spec processing if U.Utype = Is_Spec or else U.Utype = Is_Spec_Only then Set_String ("spec"); -- Package body processing else Set_String ("body"); end if; Set_String (""");"); Write_Statement_Buffer; -- If binding a library or if there is a non-Ada main subprogram -- then we generate: -- begin -- uname_E := uname_E - 1; -- if uname_E = 0 then -- F<Count>; -- end if; -- end; -- Otherwise, finalization routines are called unconditionally: -- begin -- uname_E := uname_E - 1; -- F<Count>; -- end; -- The uname_E decrement is skipped if this is a separate spec, -- since it will be done when we process the body. WBI (" begin"); if U.Utype /= Is_Spec then Set_String (" E"); Set_Unit_Number (Unum); Set_String (" := E"); Set_Unit_Number (Unum); Set_String (" - 1;"); Write_Statement_Buffer; end if; if Interface_Library_Unit or not Bind_Main_Program then Set_String (" if E"); Set_Unit_Number (Unum); Set_String (" = 0 then"); Write_Statement_Buffer; Set_String (" "); end if; Set_String (" F"); Set_Int (Count); Set_Char (';'); Write_Statement_Buffer; if Interface_Library_Unit or not Bind_Main_Program then WBI (" end if;"); end if; WBI (" end;"); Count := Count + 1; end if; end loop; if Lib_Final_Built then -- It is possible that the finalization of a library-level object -- raised an exception. In that case import the actual exception -- and the routine necessary to raise it. WBI (" declare"); WBI (" procedure Reraise_Library_Exception_If_Any;"); Set_String (" pragma Import (Ada, "); Set_String ("Reraise_Library_Exception_If_Any, "); Set_String ("""__gnat_reraise_library_exception_if_any"");"); Write_Statement_Buffer; WBI (" begin"); WBI (" Reraise_Library_Exception_If_Any;"); WBI (" end;"); WBI (" end finalize_library;"); WBI (""); end if; end Gen_Finalize_Library; -------------- -- Gen_Main -- -------------- procedure Gen_Main is begin if not No_Main_Subprogram then -- To call the main program, we declare it using a pragma Import -- Ada with the right link name. -- It might seem more obvious to "with" the main program, and call -- it in the normal Ada manner. We do not do this for three -- reasons: -- 1. It is more efficient not to recompile the main program -- 2. We are not entitled to assume the source is accessible -- 3. We don't know what options to use to compile it -- It is really reason 3 that is most critical (indeed we used -- to generate the "with", but several regression tests failed). if ALIs.Table (ALIs.First).Main_Program = Func then WBI (" function Ada_Main_Program return Integer;"); else WBI (" procedure Ada_Main_Program;"); end if; Set_String (" pragma Import (Ada, Ada_Main_Program, """); Get_Name_String (Units.Table (First_Unit_Entry).Uname); Set_Main_Program_Name; Set_String (""");"); Write_Statement_Buffer; WBI (""); -- For CodePeer, declare a wrapper for the user-defined main program if CodePeer_Mode then Gen_CodePeer_Wrapper; end if; end if; if Exit_Status_Supported_On_Target then Set_String (" function "); else Set_String (" procedure "); end if; Set_String (Get_Main_Name); if Command_Line_Args_On_Target then Write_Statement_Buffer; WBI (" (argc : Integer;"); WBI (" argv : System.Address;"); WBI (" envp : System.Address)"); if Exit_Status_Supported_On_Target then WBI (" return Integer"); end if; WBI (" is"); else if Exit_Status_Supported_On_Target then Set_String (" return Integer is"); else Set_String (" is"); end if; Write_Statement_Buffer; end if; if Opt.Default_Exit_Status /= 0 and then Bind_Main_Program and then not Configurable_Run_Time_Mode then WBI (" procedure Set_Exit_Status (Status : Integer);"); WBI (" pragma Import (C, Set_Exit_Status, " & """__gnat_set_exit_status"");"); WBI (""); end if; -- Initialize and Finalize if not CodePeer_Mode and then not Cumulative_Restrictions.Set (No_Finalization) then WBI (" procedure Initialize (Addr : System.Address);"); WBI (" pragma Import (C, Initialize, ""__gnat_initialize"");"); WBI (""); WBI (" procedure Finalize;"); WBI (" pragma Import (C, Finalize, ""__gnat_finalize"");"); end if; -- If we want to analyze the stack, we must import corresponding symbols if Dynamic_Stack_Measurement then WBI (""); WBI (" procedure Output_Results;"); WBI (" pragma Import (C, Output_Results, " & """__gnat_stack_usage_output_results"");"); WBI (""); WBI (" " & "procedure Initialize_Stack_Analysis (Buffer_Size : Natural);"); WBI (" pragma Import (C, Initialize_Stack_Analysis, " & """__gnat_stack_usage_initialize"");"); end if; -- Deal with declarations for main program case if not No_Main_Subprogram then if ALIs.Table (ALIs.First).Main_Program = Func then WBI (" Result : Integer;"); WBI (""); end if; if Bind_Main_Program and not Suppress_Standard_Library_On_Target and not CodePeer_Mode then WBI (" SEH : aliased array (1 .. 2) of Integer;"); WBI (""); end if; end if; -- Generate a reference to Ada_Main_Program_Name. This symbol is not -- referenced elsewhere in the generated program, but is needed by -- the debugger (that's why it is generated in the first place). The -- reference stops Ada_Main_Program_Name from being optimized away by -- smart linkers, such as the AiX linker. -- Because this variable is unused, we make this variable "aliased" -- with a pragma Volatile in order to tell the compiler to preserve -- this variable at any level of optimization. if Bind_Main_Program and not CodePeer_Mode then WBI (" Ensure_Reference : aliased System.Address := " & "Ada_Main_Program_Name'Address;"); WBI (" pragma Volatile (Ensure_Reference);"); WBI (""); end if; WBI (" begin"); -- Acquire command line arguments if present on target if CodePeer_Mode then null; elsif Command_Line_Args_On_Target then WBI (" gnat_argc := argc;"); WBI (" gnat_argv := argv;"); WBI (" gnat_envp := envp;"); WBI (""); -- If configurable run time and no command line args, then nothing needs -- to be done since the gnat_argc/argv/envp variables are suppressed in -- this case. elsif Configurable_Run_Time_On_Target then null; -- Otherwise set dummy values (to be filled in by some other unit?) else WBI (" gnat_argc := 0;"); WBI (" gnat_argv := System.Null_Address;"); WBI (" gnat_envp := System.Null_Address;"); end if; if Opt.Default_Exit_Status /= 0 and then Bind_Main_Program and then not Configurable_Run_Time_Mode then Set_String (" Set_Exit_Status ("); Set_Int (Opt.Default_Exit_Status); Set_String (");"); Write_Statement_Buffer; end if; if Dynamic_Stack_Measurement then Set_String (" Initialize_Stack_Analysis ("); Set_Int (Dynamic_Stack_Measurement_Array_Size); Set_String (");"); Write_Statement_Buffer; end if; if not Cumulative_Restrictions.Set (No_Finalization) and then not CodePeer_Mode then if not No_Main_Subprogram and then Bind_Main_Program and then not Suppress_Standard_Library_On_Target then WBI (" Initialize (SEH'Address);"); else WBI (" Initialize (System.Null_Address);"); end if; end if; WBI (" " & Ada_Init_Name.all & ";"); if not No_Main_Subprogram then if CodePeer_Mode then if ALIs.Table (ALIs.First).Main_Program = Proc then WBI (" " & CodePeer_Wrapper_Name & ";"); else WBI (" Result := " & CodePeer_Wrapper_Name & ";"); end if; elsif ALIs.Table (ALIs.First).Main_Program = Proc then WBI (" Ada_Main_Program;"); else WBI (" Result := Ada_Main_Program;"); end if; end if; -- Adafinal call is skipped if no finalization if not Cumulative_Restrictions.Set (No_Finalization) then WBI (" adafinal;"); end if; -- Prints the result of static stack analysis if Dynamic_Stack_Measurement then WBI (" Output_Results;"); end if; -- Finalize is only called if we have a run time if not Cumulative_Restrictions.Set (No_Finalization) and then not CodePeer_Mode then WBI (" Finalize;"); end if; -- Return result if Exit_Status_Supported_On_Target then if No_Main_Subprogram or else ALIs.Table (ALIs.First).Main_Program = Proc then WBI (" return (gnat_exit_status);"); else WBI (" return (Result);"); end if; end if; WBI (" end;"); WBI (""); end Gen_Main; ------------------------------ -- Gen_Object_Files_Options -- ------------------------------ procedure Gen_Object_Files_Options (Elab_Order : Unit_Id_Array) is Lgnat : Natural; -- This keeps track of the position in the sorted set of entries in the -- Linker_Options table of where the first entry from an internal file -- appears. Linker_Option_List_Started : Boolean := False; -- Set to True when "LINKER OPTION LIST" is displayed procedure Write_Linker_Option; -- Write binder info linker option ------------------------- -- Write_Linker_Option -- ------------------------- procedure Write_Linker_Option is Start : Natural; Stop : Natural; begin -- Loop through string, breaking at null's Start := 1; while Start < Name_Len loop -- Find null ending this section Stop := Start + 1; while Name_Buffer (Stop) /= ASCII.NUL and then Stop <= Name_Len loop Stop := Stop + 1; end loop; -- Process section if non-null if Stop > Start then if Output_Linker_Option_List then if not Zero_Formatting then if not Linker_Option_List_Started then Linker_Option_List_Started := True; Write_Eol; Write_Str (" LINKER OPTION LIST"); Write_Eol; Write_Eol; end if; Write_Str (" "); end if; Write_Str (Name_Buffer (Start .. Stop - 1)); Write_Eol; end if; WBI (" -- " & Name_Buffer (Start .. Stop - 1)); end if; Start := Stop + 1; end loop; end Write_Linker_Option; -- Start of processing for Gen_Object_Files_Options begin WBI ("-- BEGIN Object file/option list"); if Object_List_Filename /= null then Set_List_File (Object_List_Filename.all); end if; for E in Elab_Order'Range loop -- If not spec that has an associated body, then generate a comment -- giving the name of the corresponding object file. if not Units.Table (Elab_Order (E)).SAL_Interface and then Units.Table (Elab_Order (E)).Utype /= Is_Spec then Get_Name_String (ALIs.Table (Units.Table (Elab_Order (E)).My_ALI).Ofile_Full_Name); -- If the presence of an object file is necessary or if it exists, -- then use it. if not Hostparm.Exclude_Missing_Objects or else System.OS_Lib.Is_Regular_File (Name_Buffer (1 .. Name_Len)) then WBI (" -- " & Name_Buffer (1 .. Name_Len)); if Output_Object_List then Write_Str (Name_Buffer (1 .. Name_Len)); Write_Eol; end if; end if; end if; end loop; if Object_List_Filename /= null then Close_List_File; end if; -- Add a "-Ldir" for each directory in the object path for J in 1 .. Nb_Dir_In_Obj_Search_Path loop declare Dir : constant String_Ptr := Dir_In_Obj_Search_Path (J); begin Name_Len := 0; Add_Str_To_Name_Buffer ("-L"); Add_Str_To_Name_Buffer (Dir.all); Write_Linker_Option; end; end loop; if not (Opt.No_Run_Time_Mode or Opt.No_Stdlib) then Name_Len := 0; if Opt.Shared_Libgnat then Add_Str_To_Name_Buffer ("-shared"); else Add_Str_To_Name_Buffer ("-static"); end if; -- Write directly to avoid inclusion in -K output as -static and -- -shared are not usually specified linker options. WBI (" -- " & Name_Buffer (1 .. Name_Len)); end if; -- Sort linker options -- This sort accomplishes two important purposes: -- a) All application files are sorted to the front, and all GNAT -- internal files are sorted to the end. This results in a well -- defined dividing line between the two sets of files, for the -- purpose of inserting certain standard library references into -- the linker arguments list. -- b) Given two different units, we sort the linker options so that -- those from a unit earlier in the elaboration order comes later -- in the list. This is a heuristic designed to create a more -- friendly order of linker options when the operations appear in -- separate units. The idea is that if unit A must be elaborated -- before unit B, then it is more likely that B references -- libraries included by A, than vice versa, so we want libraries -- included by A to come after libraries included by B. -- These two criteria are implemented by function Lt_Linker_Option. Note -- that a special case of b) is that specs are elaborated before bodies, -- so linker options from specs come after linker options for bodies, -- and again, the assumption is that libraries used by the body are more -- likely to reference libraries used by the spec, than vice versa. Sort (Linker_Options.Last, Move_Linker_Option'Access, Lt_Linker_Option'Access); -- Write user linker options, i.e. the set of linker options that come -- from all files other than GNAT internal files, Lgnat is left set to -- point to the first entry from a GNAT internal file, or past the end -- of the entries if there are no internal files. Lgnat := Linker_Options.Last + 1; for J in 1 .. Linker_Options.Last loop if not Linker_Options.Table (J).Internal_File then Get_Name_String (Linker_Options.Table (J).Name); Write_Linker_Option; else Lgnat := J; exit; end if; end loop; -- Now we insert standard linker options that must appear after the -- entries from user files, and before the entries from GNAT run-time -- files. The reason for this decision is that libraries referenced -- by internal routines may reference these standard library entries. -- Note that we do not insert anything when pragma No_Run_Time has -- been specified or when the standard libraries are not to be used, -- otherwise on some platforms, we may get duplicate symbols when -- linking (not clear if this is still the case, but it is harmless). if not (Opt.No_Run_Time_Mode or else Opt.No_Stdlib) then if With_GNARL then Name_Len := 0; if Opt.Shared_Libgnat then Add_Str_To_Name_Buffer (Shared_Lib ("gnarl")); else Add_Str_To_Name_Buffer ("-lgnarl"); end if; Write_Linker_Option; end if; Name_Len := 0; if Opt.Shared_Libgnat then Add_Str_To_Name_Buffer (Shared_Lib ("gnat")); else Add_Str_To_Name_Buffer ("-lgnat"); end if; Write_Linker_Option; end if; -- Write linker options from all internal files for J in Lgnat .. Linker_Options.Last loop Get_Name_String (Linker_Options.Table (J).Name); Write_Linker_Option; end loop; if Output_Linker_Option_List and then not Zero_Formatting then Write_Eol; end if; WBI ("-- END Object file/option list "); end Gen_Object_Files_Options; --------------------- -- Gen_Output_File -- --------------------- procedure Gen_Output_File (Filename : String; Elab_Order : Unit_Id_Array) is begin -- Acquire settings for Interrupt_State pragmas Set_IS_Pragma_Table; -- Acquire settings for Priority_Specific_Dispatching pragma Set_PSD_Pragma_Table; -- Override time slice value if -T switch is set if Time_Slice_Set then ALIs.Table (ALIs.First).Time_Slice_Value := Opt.Time_Slice_Value; end if; -- Count number of elaboration calls for E in Elab_Order'Range loop if Units.Table (Elab_Order (E)).No_Elab then null; else Num_Elab_Calls := Num_Elab_Calls + 1; end if; end loop; -- Count the number of statically allocated stacks to be generated by -- the binder. If the user has specified the number of default-sized -- secondary stacks, use that number. Otherwise start the count at one -- as the binder is responsible for creating a secondary stack for the -- main task. if Opt.Quantity_Of_Default_Size_Sec_Stacks /= -1 then Num_Sec_Stacks := Quantity_Of_Default_Size_Sec_Stacks; elsif Sec_Stack_Used then Num_Sec_Stacks := 1; end if; for J in Units.First .. Units.Last loop Num_Primary_Stacks := Num_Primary_Stacks + Units.Table (J).Primary_Stack_Count; Num_Sec_Stacks := Num_Sec_Stacks + Units.Table (J).Sec_Stack_Count; end loop; -- Generate output file in appropriate language Gen_Output_File_Ada (Filename, Elab_Order); end Gen_Output_File; ------------------------- -- Gen_Output_File_Ada -- ------------------------- procedure Gen_Output_File_Ada (Filename : String; Elab_Order : Unit_Id_Array) is Ada_Main : constant String := Get_Ada_Main_Name; -- Name to be used for generated Ada main program. See the body of -- function Get_Ada_Main_Name for details on the form of the name. Needs_Library_Finalization : constant Boolean := not Configurable_Run_Time_On_Target and then Has_Finalizer (Elab_Order); -- For restricted run-time libraries (ZFP and Ravenscar) tasks are -- non-terminating, so we do not want finalization. Bfiles : Name_Id; -- Name of generated bind file (spec) Bfileb : Name_Id; -- Name of generated bind file (body) begin -- Create spec first Create_Binder_Output (Filename, 's', Bfiles); -- We always compile the binder file in Ada 95 mode so that we properly -- handle use of Ada 2005 keywords as identifiers in Ada 95 mode. None -- of the Ada 2005 or Ada 2012 constructs are needed by the binder file. WBI ("pragma Warnings (Off);"); WBI ("pragma Ada_95;"); -- If we are operating in Restrictions (No_Exception_Handlers) mode, -- then we need to make sure that the binder program is compiled with -- the same restriction, so that no exception tables are generated. if Cumulative_Restrictions.Set (No_Exception_Handlers) then WBI ("pragma Restrictions (No_Exception_Handlers);"); end if; -- Same processing for Restrictions (No_Exception_Propagation) if Cumulative_Restrictions.Set (No_Exception_Propagation) then WBI ("pragma Restrictions (No_Exception_Propagation);"); end if; -- Same processing for pragma No_Run_Time if No_Run_Time_Mode then WBI ("pragma No_Run_Time;"); end if; -- Generate with of System so we can reference System.Address WBI ("with System;"); -- Generate with of System.Initialize_Scalars if active if Initialize_Scalars_Used then WBI ("with System.Scalar_Values;"); end if; -- Generate withs of System.Secondary_Stack and System.Parameters to -- allow the generation of the default-sized secondary stack pool. if Sec_Stack_Used then WBI ("with System.Parameters;"); WBI ("with System.Secondary_Stack;"); end if; Resolve_Binder_Options (Elab_Order); -- Generate standard with's if not Suppress_Standard_Library_On_Target then if CodePeer_Mode then WBI ("with System.Standard_Library;"); end if; end if; WBI ("package " & Ada_Main & " is"); -- Main program case if Bind_Main_Program then -- Generate argc/argv stuff unless suppressed if Command_Line_Args_On_Target or not Configurable_Run_Time_On_Target then WBI (""); WBI (" gnat_argc : Integer;"); WBI (" gnat_argv : System.Address;"); WBI (" gnat_envp : System.Address;"); -- If the standard library is not suppressed, these variables -- are in the run-time data area for easy run time access. if not Suppress_Standard_Library_On_Target then WBI (""); WBI (" pragma Import (C, gnat_argc);"); WBI (" pragma Import (C, gnat_argv);"); WBI (" pragma Import (C, gnat_envp);"); end if; end if; -- Define exit status. Again in normal mode, this is in the run-time -- library, and is initialized there, but in the configurable -- run-time case, the variable is declared and initialized in this -- file. WBI (""); if Configurable_Run_Time_Mode then if Exit_Status_Supported_On_Target then WBI (" gnat_exit_status : Integer := 0;"); end if; else WBI (" gnat_exit_status : Integer;"); WBI (" pragma Import (C, gnat_exit_status);"); end if; -- Generate the GNAT_Version and Ada_Main_Program_Name info only for -- the main program. Otherwise, it can lead under some circumstances -- to a symbol duplication during the link (for instance when a C -- program uses two Ada libraries). Also zero terminate the string -- so that its end can be found reliably at run time. WBI (""); WBI (" GNAT_Version : constant String :="); WBI (" """ & Ver_Prefix & Gnat_Version_String & """ & ASCII.NUL;"); WBI (" pragma Export (C, GNAT_Version, ""__gnat_version"");"); WBI (""); Set_String (" Ada_Main_Program_Name : constant String := """); Get_Name_String (Units.Table (First_Unit_Entry).Uname); Set_Main_Program_Name; Set_String (""" & ASCII.NUL;"); Write_Statement_Buffer; WBI (" pragma Export (C, Ada_Main_Program_Name, " & """__gnat_ada_main_program_name"");"); end if; WBI (""); WBI (" procedure " & Ada_Init_Name.all & ";"); WBI (" pragma Export (C, " & Ada_Init_Name.all & ", """ & Ada_Init_Name.all & """);"); -- If -a has been specified use pragma Linker_Constructor for the init -- procedure and pragma Linker_Destructor for the final procedure. if Use_Pragma_Linker_Constructor then WBI (" pragma Linker_Constructor (" & Ada_Init_Name.all & ");"); end if; if not Cumulative_Restrictions.Set (No_Finalization) then WBI (""); WBI (" procedure " & Ada_Final_Name.all & ";"); WBI (" pragma Export (C, " & Ada_Final_Name.all & ", """ & Ada_Final_Name.all & """);"); if Use_Pragma_Linker_Constructor then WBI (" pragma Linker_Destructor (" & Ada_Final_Name.all & ");"); end if; end if; if Bind_Main_Program then WBI (""); if Exit_Status_Supported_On_Target then Set_String (" function "); else Set_String (" procedure "); end if; Set_String (Get_Main_Name); -- Generate argument list if present if Command_Line_Args_On_Target then Write_Statement_Buffer; WBI (" (argc : Integer;"); WBI (" argv : System.Address;"); Set_String (" envp : System.Address)"); if Exit_Status_Supported_On_Target then Write_Statement_Buffer; WBI (" return Integer;"); else Write_Statement_Buffer (";"); end if; else if Exit_Status_Supported_On_Target then Write_Statement_Buffer (" return Integer;"); else Write_Statement_Buffer (";"); end if; end if; WBI (" pragma Export (C, " & Get_Main_Name & ", """ & Get_Main_Name & """);"); end if; -- Generate version numbers for units, only if needed. Be very safe on -- the condition. if not Configurable_Run_Time_On_Target or else System_Version_Control_Used or else not Bind_Main_Program then Gen_Versions; end if; Gen_Elab_Order (Elab_Order); -- Spec is complete WBI (""); WBI ("end " & Ada_Main & ";"); Close_Binder_Output; -- Prepare to write body Create_Binder_Output (Filename, 'b', Bfileb); -- We always compile the binder file in Ada 95 mode so that we properly -- handle use of Ada 2005 keywords as identifiers in Ada 95 mode. None -- of the Ada 2005/2012 constructs are needed by the binder file. WBI ("pragma Warnings (Off);"); WBI ("pragma Ada_95;"); -- Output Source_File_Name pragmas which look like -- pragma Source_File_Name (Ada_Main, Spec_File_Name => "sss"); -- pragma Source_File_Name (Ada_Main, Body_File_Name => "bbb"); -- where sss/bbb are the spec/body file names respectively Get_Name_String (Bfiles); Name_Buffer (Name_Len + 1 .. Name_Len + 3) := """);"; WBI ("pragma Source_File_Name (" & Ada_Main & ", Spec_File_Name => """ & Name_Buffer (1 .. Name_Len + 3)); Get_Name_String (Bfileb); Name_Buffer (Name_Len + 1 .. Name_Len + 3) := """);"; WBI ("pragma Source_File_Name (" & Ada_Main & ", Body_File_Name => """ & Name_Buffer (1 .. Name_Len + 3)); -- Generate pragma Suppress (Overflow_Check). This is needed for recent -- versions of the compiler which have overflow checks on by default. -- We do not want overflow checking enabled for the increments of the -- elaboration variables (since this can cause an unwanted reference to -- the last chance exception handler for limited run-times). WBI ("pragma Suppress (Overflow_Check);"); -- Generate with of System.Restrictions to initialize -- Run_Time_Restrictions. if System_Restrictions_Used and not Suppress_Standard_Library_On_Target then WBI (""); WBI ("with System.Restrictions;"); end if; -- Generate with of Ada.Exceptions if needs library finalization if Needs_Library_Finalization then WBI ("with Ada.Exceptions;"); end if; -- Generate with of System.Elaboration_Allocators if the restriction -- No_Standard_Allocators_After_Elaboration was present. if Cumulative_Restrictions.Set (No_Standard_Allocators_After_Elaboration) then WBI ("with System.Elaboration_Allocators;"); end if; -- Generate start of package body WBI (""); WBI ("package body " & Ada_Main & " is"); WBI (""); -- Generate externals for elaboration entities Gen_Elab_Externals (Elab_Order); -- Generate default-sized secondary stacks pool. At least one stack is -- created and assigned to the environment task if secondary stacks are -- used by the program. if Sec_Stack_Used then Set_String (" Sec_Default_Sized_Stacks"); Set_String (" : array (1 .. "); Set_Int (Num_Sec_Stacks); Set_String (") of aliased System.Secondary_Stack.SS_Stack ("); if Opt.Default_Sec_Stack_Size /= No_Stack_Size then Set_Int (Opt.Default_Sec_Stack_Size); else Set_String ("System.Parameters.Runtime_Default_Sec_Stack_Size"); end if; Set_String (");"); Write_Statement_Buffer; WBI (""); end if; -- Generate reference if not CodePeer_Mode then if not Suppress_Standard_Library_On_Target then -- Generate Priority_Specific_Dispatching pragma string Set_String (" Local_Priority_Specific_Dispatching : " & "constant String := """); for J in 0 .. PSD_Pragma_Settings.Last loop Set_Char (PSD_Pragma_Settings.Table (J)); end loop; Set_String (""";"); Write_Statement_Buffer; -- Generate Interrupt_State pragma string Set_String (" Local_Interrupt_States : constant String := """); for J in 0 .. IS_Pragma_Settings.Last loop Set_Char (IS_Pragma_Settings.Table (J)); end loop; Set_String (""";"); Write_Statement_Buffer; WBI (""); end if; if not Suppress_Standard_Library_On_Target then -- The B.1(39) implementation advice says that the adainit and -- adafinal routines should be idempotent. Generate a flag to -- ensure that. This is not needed if we are suppressing the -- standard library since it would never be referenced. WBI (" Is_Elaborated : Boolean := False;"); -- Generate bind environment string Gen_Bind_Env_String; end if; WBI (""); end if; -- Generate the adafinal routine unless there is no finalization to do if not Cumulative_Restrictions.Set (No_Finalization) then if Needs_Library_Finalization then Gen_Finalize_Library (Elab_Order); end if; Gen_Adafinal; end if; Gen_Adainit (Elab_Order); if Bind_Main_Program then Gen_Main; end if; -- Output object file list and the Ada body is complete Gen_Object_Files_Options (Elab_Order); WBI (""); WBI ("end " & Ada_Main & ";"); Close_Binder_Output; end Gen_Output_File_Ada; ---------------------- -- Gen_Restrictions -- ---------------------- procedure Gen_Restrictions is Count : Integer; begin if Suppress_Standard_Library_On_Target or not System_Restrictions_Used then return; end if; WBI (" System.Restrictions.Run_Time_Restrictions :="); WBI (" (Set =>"); Set_String (" ("); Count := 0; for J in Cumulative_Restrictions.Set'Range loop Set_Boolean (Cumulative_Restrictions.Set (J)); Set_String (", "); Count := Count + 1; if J /= Cumulative_Restrictions.Set'Last and then Count = 8 then Write_Statement_Buffer; Set_String (" "); Count := 0; end if; end loop; Set_String_Replace ("),"); Write_Statement_Buffer; Set_String (" Value => ("); for J in Cumulative_Restrictions.Value'Range loop Set_Int (Int (Cumulative_Restrictions.Value (J))); Set_String (", "); end loop; Set_String_Replace ("),"); Write_Statement_Buffer; WBI (" Violated =>"); Set_String (" ("); Count := 0; for J in Cumulative_Restrictions.Violated'Range loop Set_Boolean (Cumulative_Restrictions.Violated (J)); Set_String (", "); Count := Count + 1; if J /= Cumulative_Restrictions.Set'Last and then Count = 8 then Write_Statement_Buffer; Set_String (" "); Count := 0; end if; end loop; Set_String_Replace ("),"); Write_Statement_Buffer; Set_String (" Count => ("); for J in Cumulative_Restrictions.Count'Range loop Set_Int (Int (Cumulative_Restrictions.Count (J))); Set_String (", "); end loop; Set_String_Replace ("),"); Write_Statement_Buffer; Set_String (" Unknown => ("); for J in Cumulative_Restrictions.Unknown'Range loop Set_Boolean (Cumulative_Restrictions.Unknown (J)); Set_String (", "); end loop; Set_String_Replace ("))"); Set_String (";"); Write_Statement_Buffer; end Gen_Restrictions; ------------------ -- Gen_Versions -- ------------------ -- This routine generates lines such as: -- unnnnn : constant Integer := 16#hhhhhhhh#; -- pragma Export (C, unnnnn, unam); -- for each unit, where unam is the unit name suffixed by either B or S for -- body or spec, with dots replaced by double underscores, and hhhhhhhh is -- the version number, and nnnnn is a 5-digits serial number. procedure Gen_Versions is Ubuf : String (1 .. 6) := "u00000"; procedure Increment_Ubuf; -- Little procedure to increment the serial number -------------------- -- Increment_Ubuf -- -------------------- procedure Increment_Ubuf is begin for J in reverse Ubuf'Range loop Ubuf (J) := Character'Succ (Ubuf (J)); exit when Ubuf (J) <= '9'; Ubuf (J) := '0'; end loop; end Increment_Ubuf; -- Start of processing for Gen_Versions begin WBI (""); WBI (" type Version_32 is mod 2 ** 32;"); for U in Units.First .. Units.Last loop if not Units.Table (U).SAL_Interface and then (not Bind_For_Library or else Units.Table (U).Directly_Scanned) then Increment_Ubuf; WBI (" " & Ubuf & " : constant Version_32 := 16#" & Units.Table (U).Version & "#;"); Set_String (" pragma Export (C, "); Set_String (Ubuf); Set_String (", """); Get_Name_String (Units.Table (U).Uname); for K in 1 .. Name_Len loop if Name_Buffer (K) = '.' then Set_Char ('_'); Set_Char ('_'); elsif Name_Buffer (K) = '%' then exit; else Set_Char (Name_Buffer (K)); end if; end loop; if Name_Buffer (Name_Len) = 's' then Set_Char ('S'); else Set_Char ('B'); end if; Set_String (""");"); Write_Statement_Buffer; end if; end loop; end Gen_Versions; ------------------------ -- Get_Main_Unit_Name -- ------------------------ function Get_Main_Unit_Name (S : String) return String is Result : String := S; begin for J in S'Range loop if Result (J) = '.' then Result (J) := '_'; end if; end loop; return Result; end Get_Main_Unit_Name; ----------------------- -- Get_Ada_Main_Name -- ----------------------- function Get_Ada_Main_Name return String is Suffix : constant String := "_00"; Name : String (1 .. Opt.Ada_Main_Name.all'Length + Suffix'Length) := Opt.Ada_Main_Name.all & Suffix; Nlen : Natural; begin -- For CodePeer, we want reproducible names (independent of other mains -- that may or may not be present) that don't collide when analyzing -- multiple mains and which are easily recognizable as "ada_main" names. if CodePeer_Mode then Get_Name_String (Units.Table (First_Unit_Entry).Uname); return "ada_main_for_" & Get_Main_Unit_Name (Name_Buffer (1 .. Name_Len - 2)); end if; -- This loop tries the following possibilities in order -- <Ada_Main> -- <Ada_Main>_01 -- <Ada_Main>_02 -- .. -- <Ada_Main>_99 -- where <Ada_Main> is equal to Opt.Ada_Main_Name. By default, -- it is set to 'ada_main'. for J in 0 .. 99 loop if J = 0 then Nlen := Name'Length - Suffix'Length; else Nlen := Name'Length; Name (Name'Last) := Character'Val (J mod 10 + Character'Pos ('0')); Name (Name'Last - 1) := Character'Val (J / 10 + Character'Pos ('0')); end if; for K in ALIs.First .. ALIs.Last loop for L in ALIs.Table (K).First_Unit .. ALIs.Table (K).Last_Unit loop -- Get unit name, removing %b or %e at end Get_Name_String (Units.Table (L).Uname); Name_Len := Name_Len - 2; if Name_Buffer (1 .. Name_Len) = Name (1 .. Nlen) then goto Continue; end if; end loop; end loop; return Name (1 .. Nlen); <<Continue>> null; end loop; -- If we fall through, just use a peculiar unlikely name return ("Qwertyuiop"); end Get_Ada_Main_Name; ------------------- -- Get_Main_Name -- ------------------- function Get_Main_Name return String is begin -- Explicit name given with -M switch if Bind_Alternate_Main_Name then return Alternate_Main_Name.all; -- Case of main program name to be used directly elsif Use_Ada_Main_Program_Name_On_Target then -- Get main program name Get_Name_String (Units.Table (First_Unit_Entry).Uname); -- If this is a child name, return only the name of the child, since -- we can't have dots in a nested program name. Note that we do not -- include the %b at the end of the unit name. for J in reverse 1 .. Name_Len - 2 loop if J = 1 or else Name_Buffer (J - 1) = '.' then return Name_Buffer (J .. Name_Len - 2); end if; end loop; raise Program_Error; -- impossible exit -- Case where "main" is to be used as default else return "main"; end if; end Get_Main_Name; --------------------- -- Get_WC_Encoding -- --------------------- function Get_WC_Encoding return Character is begin -- If encoding method specified by -W switch, then return it if Wide_Character_Encoding_Method_Specified then return WC_Encoding_Letters (Wide_Character_Encoding_Method); -- If no main program, and not specified, set brackets, we really have -- no better choice. If some other encoding is required when there is -- no main, it must be set explicitly using -Wx. -- Note: if the ALI file always passed the wide character encoding of -- every file, then we could use the encoding of the initial specified -- file, but this information is passed only for potential main -- programs. We could fix this sometime, but it is a very minor point -- (wide character default encoding for [Wide_[Wide_]]Text_IO when there -- is no main program). elsif No_Main_Subprogram then return 'b'; -- Otherwise if there is a main program, take encoding from it else return ALIs.Table (ALIs.First).WC_Encoding; end if; end Get_WC_Encoding; ------------------- -- Has_Finalizer -- ------------------- function Has_Finalizer (Elab_Order : Unit_Id_Array) return Boolean is U : Unit_Record; Unum : Unit_Id; begin for E in reverse Elab_Order'Range loop Unum := Elab_Order (E); U := Units.Table (Unum); -- We are only interested in non-generic packages if U.Unit_Kind = 'p' and then U.Has_Finalizer and then not U.Is_Generic and then not U.No_Elab then return True; end if; end loop; return False; end Has_Finalizer; ---------- -- Hash -- ---------- function Hash (Nam : Name_Id) return Header_Num is begin return Int (Nam - Names_Low_Bound) rem Header_Num'Last; end Hash; ---------------------- -- Lt_Linker_Option -- ---------------------- function Lt_Linker_Option (Op1 : Natural; Op2 : Natural) return Boolean is begin -- Sort internal files last if Linker_Options.Table (Op1).Internal_File /= Linker_Options.Table (Op2).Internal_File then -- Note: following test uses False < True return Linker_Options.Table (Op1).Internal_File < Linker_Options.Table (Op2).Internal_File; -- If both internal or both non-internal, sort according to the -- elaboration position. A unit that is elaborated later should come -- earlier in the linker options list. else return Units.Table (Linker_Options.Table (Op1).Unit).Elab_Position > Units.Table (Linker_Options.Table (Op2).Unit).Elab_Position; end if; end Lt_Linker_Option; ------------------------ -- Move_Linker_Option -- ------------------------ procedure Move_Linker_Option (From : Natural; To : Natural) is begin Linker_Options.Table (To) := Linker_Options.Table (From); end Move_Linker_Option; ---------------------------- -- Resolve_Binder_Options -- ---------------------------- procedure Resolve_Binder_Options (Elab_Order : Unit_Id_Array) is procedure Check_Package (Var : in out Boolean; Name : String); -- Set Var to true iff the current identifier in Namet is Name. Do -- nothing if it doesn't match. This procedure is just a helper to -- avoid explicitly dealing with length. ------------------- -- Check_Package -- ------------------- procedure Check_Package (Var : in out Boolean; Name : String) is begin if Name_Len = Name'Length and then Name_Buffer (1 .. Name_Len) = Name then Var := True; end if; end Check_Package; -- Start of processing for Resolve_Binder_Options begin for E in Elab_Order'Range loop Get_Name_String (Units.Table (Elab_Order (E)).Uname); -- This is not a perfect approach, but is the current protocol -- between the run-time and the binder to indicate that tasking is -- used: System.OS_Interface should always be used by any tasking -- application. Check_Package (With_GNARL, "system.os_interface%s"); -- Ditto for the use of restricted tasking Check_Package (System_Tasking_Restricted_Stages_Used, "system.tasking.restricted.stages%s"); -- Ditto for the use of interrupts Check_Package (System_Interrupts_Used, "system.interrupts%s"); -- Ditto for the use of dispatching domains Check_Package (Dispatching_Domains_Used, "system.multiprocessors.dispatching_domains%s"); -- Ditto for the use of restrictions Check_Package (System_Restrictions_Used, "system.restrictions%s"); -- Ditto for the use of System.Secondary_Stack Check_Package (System_Secondary_Stack_Used, "system.secondary_stack%s"); -- Ditto for use of an SMP bareboard runtime Check_Package (System_BB_CPU_Primitives_Multiprocessors_Used, "system.bb.cpu_primitives.multiprocessors%s"); -- Ditto for System.Version_Control, which is used for Version and -- Body_Version attributes. Check_Package (System_Version_Control_Used, "system.version_control%s"); end loop; end Resolve_Binder_Options; ------------------ -- Set_Bind_Env -- ------------------ procedure Set_Bind_Env (Key, Value : String) is begin -- The lengths of Key and Value are stored as single bytes if Key'Length > 255 then Osint.Fail ("bind environment key """ & Key & """ too long"); end if; if Value'Length > 255 then Osint.Fail ("bind environment value """ & Value & """ too long"); end if; Bind_Environment.Set (Name_Find (Key), Name_Find (Value)); end Set_Bind_Env; ----------------- -- Set_Boolean -- ----------------- procedure Set_Boolean (B : Boolean) is False_Str : constant String := "False"; True_Str : constant String := "True"; begin if B then Statement_Buffer (Stm_Last + 1 .. Stm_Last + True_Str'Length) := True_Str; Stm_Last := Stm_Last + True_Str'Length; else Statement_Buffer (Stm_Last + 1 .. Stm_Last + False_Str'Length) := False_Str; Stm_Last := Stm_Last + False_Str'Length; end if; end Set_Boolean; -------------- -- Set_Char -- -------------- procedure Set_Char (C : Character) is begin Stm_Last := Stm_Last + 1; Statement_Buffer (Stm_Last) := C; end Set_Char; ------------- -- Set_Int -- ------------- procedure Set_Int (N : Int) is begin if N < 0 then Set_String ("-"); Set_Int (-N); else if N > 9 then Set_Int (N / 10); end if; Stm_Last := Stm_Last + 1; Statement_Buffer (Stm_Last) := Character'Val (N mod 10 + Character'Pos ('0')); end if; end Set_Int; ------------------------- -- Set_IS_Pragma_Table -- ------------------------- procedure Set_IS_Pragma_Table is begin for F in ALIs.First .. ALIs.Last loop for K in ALIs.Table (F).First_Interrupt_State .. ALIs.Table (F).Last_Interrupt_State loop declare Inum : constant Int := Interrupt_States.Table (K).Interrupt_Id; Stat : constant Character := Interrupt_States.Table (K).Interrupt_State; begin while IS_Pragma_Settings.Last < Inum loop IS_Pragma_Settings.Append ('n'); end loop; IS_Pragma_Settings.Table (Inum) := Stat; end; end loop; end loop; end Set_IS_Pragma_Table; --------------------------- -- Set_Main_Program_Name -- --------------------------- procedure Set_Main_Program_Name is begin -- Note that name has %b on the end which we ignore -- First we output the initial _ada_ since we know that the main program -- is a library level subprogram. Set_String ("_ada_"); -- Copy name, changing dots to double underscores for J in 1 .. Name_Len - 2 loop if Name_Buffer (J) = '.' then Set_String ("__"); else Set_Char (Name_Buffer (J)); end if; end loop; end Set_Main_Program_Name; --------------------- -- Set_Name_Buffer -- --------------------- procedure Set_Name_Buffer is begin for J in 1 .. Name_Len loop Set_Char (Name_Buffer (J)); end loop; end Set_Name_Buffer; ------------------------- -- Set_PSD_Pragma_Table -- ------------------------- procedure Set_PSD_Pragma_Table is begin for F in ALIs.First .. ALIs.Last loop for K in ALIs.Table (F).First_Specific_Dispatching .. ALIs.Table (F).Last_Specific_Dispatching loop declare DTK : Specific_Dispatching_Record renames Specific_Dispatching.Table (K); begin while PSD_Pragma_Settings.Last < DTK.Last_Priority loop PSD_Pragma_Settings.Append ('F'); end loop; for Prio in DTK.First_Priority .. DTK.Last_Priority loop PSD_Pragma_Settings.Table (Prio) := DTK.Dispatching_Policy; end loop; end; end loop; end loop; end Set_PSD_Pragma_Table; ---------------- -- Set_String -- ---------------- procedure Set_String (S : String) is begin Statement_Buffer (Stm_Last + 1 .. Stm_Last + S'Length) := S; Stm_Last := Stm_Last + S'Length; end Set_String; ------------------------ -- Set_String_Replace -- ------------------------ procedure Set_String_Replace (S : String) is begin Statement_Buffer (Stm_Last - S'Length + 1 .. Stm_Last) := S; end Set_String_Replace; ------------------- -- Set_Unit_Name -- ------------------- procedure Set_Unit_Name is begin for J in 1 .. Name_Len - 2 loop if Name_Buffer (J) = '.' then Set_String ("__"); else Set_Char (Name_Buffer (J)); end if; end loop; end Set_Unit_Name; --------------------- -- Set_Unit_Number -- --------------------- procedure Set_Unit_Number (U : Unit_Id) is Num_Units : constant Nat := Nat (Units.Last) - Nat (Unit_Id'First); Unum : constant Nat := Nat (U) - Nat (Unit_Id'First); begin if Num_Units >= 10 and then Unum < 10 then Set_Char ('0'); end if; if Num_Units >= 100 and then Unum < 100 then Set_Char ('0'); end if; Set_Int (Unum); end Set_Unit_Number; --------------------- -- Write_Bind_Line -- --------------------- procedure Write_Bind_Line (S : String) is begin -- Need to strip trailing LF from S WBI (S (S'First .. S'Last - 1)); end Write_Bind_Line; ---------------------------- -- Write_Statement_Buffer -- ---------------------------- procedure Write_Statement_Buffer is begin WBI (Statement_Buffer (1 .. Stm_Last)); Stm_Last := 0; end Write_Statement_Buffer; procedure Write_Statement_Buffer (S : String) is begin Set_String (S); Write_Statement_Buffer; end Write_Statement_Buffer; end Bindgen;