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Diffstat (limited to 'gcc-4.8.3/gcc/ada/bindgen.adb')
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1 files changed, 3163 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/ada/bindgen.adb b/gcc-4.8.3/gcc/ada/bindgen.adb new file mode 100644 index 000000000..71741441d --- /dev/null +++ b/gcc-4.8.3/gcc/ada/bindgen.adb @@ -0,0 +1,3163 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- B I N D G E N -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1992-2012, 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 Binde; use Binde; +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 Table; use Table; +with Targparm; use Targparm; +with Types; use Types; + +with System.OS_Lib; use System.OS_Lib; +with System.WCh_Con; use System.WCh_Con; + +with GNAT.Heap_Sort_A; use GNAT.Heap_Sort_A; + +package body Bindgen is + + Statement_Buffer : String (1 .. 1000); + -- Buffer used for constructing output statements + + Last : Natural := 0; + -- Last location in Statement_Buffer currently set + + With_DECGNAT : Boolean := False; + -- Flag which indicates whether the program uses the DECGNAT library + -- (presence of the unit DEC). + + 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 + + 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_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. + + Lib_Final_Built : Boolean := False; + -- Flag indicating whether the finalize_library rountine 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"); + + ---------------------- + -- Run-Time Globals -- + ---------------------- + + -- This section documents the global variables that 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; + -- Detect_Blocking : Integer; + -- Default_Stack_Size : Integer; + -- Leap_Seconds_Support : Integer; + -- Main_CPU : Integer; + + -- 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. + + -- Heap_Size is the heap to use for memory allocations set by use of a + -- -Hnn parameter for the binder or by the GNAT$NO_MALLOC_64 logical. + -- Valid values are 32 and 64. This switch is only effective on VMS. + + -- 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 -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. + + -- 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. + + -- 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. + + procedure WBI (Info : String) renames Osint.B.Write_Binder_Info; + -- Convenient shorthand used throughout + + ----------------------- + -- Local Subprograms -- + ----------------------- + + procedure Gen_Adainit; + -- Generates the Adainit procedure + + procedure Gen_Adafinal; + -- Generate the Adafinal procedure + + procedure Gen_CodePeer_Wrapper; + -- For CodePeer, generate wrapper which calls user-defined main subprogram + + procedure Gen_Elab_Calls; + -- Generate sequence of elaboration calls + + procedure Gen_Elab_Externals; + -- Generate sequence of external declarations for elaboration + + procedure Gen_Elab_Order; + -- Generate comments showing elaboration order chosen + + procedure Gen_Finalize_Library; + -- Generate a sequence of finalization calls to elaborated packages + + procedure Gen_Main; + -- Generate procedure main + + procedure Gen_Object_Files_Options; + -- 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); + -- 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 return Boolean; + -- Determine whether the current unit has at least one library-level + -- finalizer. + + function Lt_Linker_Option (Op1, 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; + -- Set the value of With_GNARL and With_DECGNAT. The latter only on VMS + -- since it tests for a package named "dec" which might cause a conflict + -- on non-VMS systems. + + procedure Set_Char (C : Character); + -- Set given character in Statement_Buffer at the Last + 1 position + -- and increment 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 Last + 1 position, and updating 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 Last + 1 position + -- and update 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 Last + 1, and 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 + -- 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. + + type Qualification_Mode is (Dollar_Sign, Dot, Double_Underscores); + + procedure Set_Unit_Name (Mode : Qualification_Mode := Double_Underscores); + -- Given a unit name in the Name_Buffer, copy it into Statement_Buffer, + -- starting at the Last + 1 position and update Last past the value. + -- Depending on parameter Mode, a dot (.) can be qualified into double + -- underscores (__), a dollar sign ($) or left as is. + + 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 Last, and reset 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 Last, and reset Last to 0 + + ------------------ + -- Gen_Adafinal -- + ------------------ + + procedure Gen_Adafinal is + begin + WBI (" procedure " & Ada_Final_Name.all & " is"); + + if VM_Target = No_VM + and Bind_Main_Program + 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 (" begin"); + + if not CodePeer_Mode then + WBI (" if not Is_Elaborated then"); + WBI (" return;"); + WBI (" end if;"); + WBI (" Is_Elaborated := False;"); + end if; + + -- On non-virtual machine targets, finalization is done differently + -- depending on whether this is the main program or a library. + + if VM_Target = No_VM and then not CodePeer_Mode then + if Bind_Main_Program 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 machine targets, therefore + -- call the runtime finalization routine directly. Similarly 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 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 is not needed for VM targets; 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 VM_Target = No_VM + 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"); + + -- When compiling for the AAMP small library, where the standard library + -- is no longer suppressed, we still want to exclude the setting of the + -- various imported globals, which aren't present for that library. + + elsif AAMP_On_Target and then Configurable_Run_Time_On_Target then + WBI (" begin"); + WBI (" null;"); + + -- 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"");"); + 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; + + -- 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 then + WBI (" Exception_Tracebacks : Integer;"); + WBI (" pragma Import (C, Exception_Tracebacks, " & + """__gl_exception_tracebacks"");"); + 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 (" Leap_Seconds_Support : Integer;"); + WBI (" pragma Import (C, Leap_Seconds_Support, " & + """__gl_leap_seconds_support"");"); + + -- Import entry point for elaboration time signal handler + -- installation, and indication of if it's been called previously. + + WBI (""); + WBI (" procedure Install_Handler;"); + WBI (" pragma Import (C, Install_Handler, " & + """__gnat_install_handler"");"); + WBI (""); + WBI (" Handler_Installed : Integer;"); + WBI (" pragma Import (C, Handler_Installed, " & + """__gnat_handler_installed"");"); + + -- 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; + + -- The import of the soft link which performs library-level object + -- finalization is not needed for VM targets; 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 VM_Target = No_VM and then 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; + + -- Import entry point for environment feature enable/disable + -- routine, and indication that it's been called previously. + + if OpenVMS_On_Target then + WBI (""); + WBI (" procedure Set_Features;"); + WBI (" pragma Import (C, Set_Features, " & + """__gnat_set_features"");"); + WBI (""); + WBI (" Features_Set : Integer;"); + WBI (" pragma Import (C, Features_Set, " & + """__gnat_features_set"");"); + + if Opt.Heap_Size /= 0 then + WBI (""); + WBI (" Heap_Size : Integer;"); + WBI (" pragma Import (C, Heap_Size, " & + """__gl_heap_size"");"); + + Write_Statement_Buffer; + end if; + 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; + + -- Special processing when main program is CIL function/procedure + + if VM_Target = CLI_Target + and then Bind_Main_Program + and then not No_Main_Subprogram + then + WBI (""); + + -- Function case, use Set_Exit_Status to report the returned + -- status code, since that is the only mechanism available. + + if ALIs.Table (ALIs.First).Main_Program = Func then + WBI (" Result : Integer;"); + WBI (" procedure Set_Exit_Status (Code : Integer);"); + WBI (" pragma Import (C, Set_Exit_Status, " & + """__gnat_set_exit_status"");"); + WBI (""); + WBI (" function Ada_Main_Program return Integer;"); + + -- Procedure case + + else + WBI (" procedure Ada_Main_Program;"); + end if; + + Get_Name_String (Units.Table (First_Unit_Entry).Uname); + Name_Len := Name_Len - 2; + WBI (" pragma Import (CIL, Ada_Main_Program, """ + & Name_Buffer (1 .. Name_Len) & "." + & Get_Main_Unit_Name (Name_Buffer (1 .. Name_Len)) & """);"); + 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; + + WBI (" begin"); + WBI (" if Is_Elaborated then"); + WBI (" return;"); + WBI (" end if;"); + WBI (" Is_Elaborated := True;"); + + 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 then + WBI (" Exception_Tracebacks := 1;"); + 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; + + -- Generate call to Install_Handler + + -- In .NET, when binding with -z, we don't install the signal handler + -- to let the caller handle the last exception handler. + + if VM_Target /= CLI_Target + or else Bind_Main_Program + then + WBI (""); + WBI (" if Handler_Installed = 0 then"); + WBI (" Install_Handler;"); + WBI (" end if;"); + end if; + + -- Generate call to Set_Features + + if OpenVMS_On_Target then + WBI (""); + WBI (" if Features_Set = 0 then"); + WBI (" Set_Features;"); + WBI (" end if;"); + + -- Features_Set may twiddle the heap size according to a logical + -- name, but the binder switch must override. + + if Opt.Heap_Size /= 0 then + Set_String (" Heap_Size := "); + Set_Int (Opt.Heap_Size); + Set_Char (';'); + Write_Statement_Buffer; + end if; + end if; + 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; + + -- Generate assignment of default secondary stack size if set + + if Sec_Stack_Used and then Default_Sec_Stack_Size /= -1 then + WBI (""); + Set_String (" System.Secondary_Stack."); + Set_String ("Default_Secondary_Stack_Size := "); + Set_Int (Opt.Default_Sec_Stack_Size); + Set_Char (';'); + 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; + + -- On virtual machine targets, or on non-virtual machine ones 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 (VM_Target /= No_VM or else Bind_Main_Program) + and then not Configurable_Run_Time_On_Target + and then not Suppress_Standard_Library_On_Target + then + WBI (""); + + if VM_Target = No_VM then + if Lib_Final_Built then + Set_String (" Finalize_Library_Objects := "); + Set_String ("finalize_library'access;"); + else + Set_String (" Finalize_Library_Objects := null;"); + end if; + + -- On VM targets use regular Ada to set the soft link + + else + if Lib_Final_Built then + Set_String + (" System.Soft_Links.Finalize_Library_Objects"); + Set_String (" := finalize_library'access;"); + else + Set_String + (" System.Soft_Links.Finalize_Library_Objects"); + Set_String (" := null;"); + end if; + end if; + + Write_Statement_Buffer; + end if; + + -- Generate elaboration calls + + if not CodePeer_Mode then + WBI (""); + end if; + + Gen_Elab_Calls; + + -- 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; + + -- Case of main program is CIL function or procedure + + if VM_Target = CLI_Target + and then Bind_Main_Program + and then not No_Main_Subprogram + then + -- For function case, use Set_Exit_Status to set result + + if ALIs.Table (ALIs.First).Main_Program = Func then + WBI (" Result := Ada_Main_Program;"); + WBI (" Set_Exit_Status (Result);"); + + -- Procedure case + + else + WBI (" Ada_Main_Program;"); + end if; + end if; + + WBI (" end " & Ada_Init_Name.all & ";"); + WBI (""); + end Gen_Adainit; + + -------------------------- + -- 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 is + Check_Elab_Flag : Boolean; + + begin + for E in Elab_Order.First .. Elab_Order.Last loop + declare + Unum : constant Unit_Id := Elab_Order.Table (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 + + -- 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. + + elsif U.No_Elab + and then (not CodePeer_Mode + 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 U.Utype = Is_Body + and then Units.Table (Unum_Spec).Set_Elab_Entity + and then not CodePeer_Mode + then + Set_String (" E"); + Set_Unit_Number (Unum_Spec); + + -- The AAMP target has no notion of shared libraries, and + -- there's no possibility of reelaboration, so we treat the + -- the elaboration var as a flag instead of a counter and + -- simply set it. + + if AAMP_On_Target then + Set_String (" := 1;"); + + -- Otherwise (normal case), increment elaboration counter + + else + Set_String (" := E"); + Set_Unit_Number (Unum_Spec); + Set_String (" + 1;"); + end if; + + Write_Statement_Buffer; + + -- In the special case where the target is AAMP and the unit is + -- a spec with a body, the elaboration entity is initialized + -- here. This is done because it's the only way to accomplish + -- initialization of such entities, as there is no mechanism + -- provided for initializing global variables at load time on + -- AAMP. + + elsif AAMP_On_Target + and then U.Utype = Is_Spec + and then Units.Table (Unum_Spec).Set_Elab_Entity + then + Set_String (" E"); + Set_Unit_Number (Unum_Spec); + Set_String (" := 0;"); + 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 + -- In the special case where the target is AAMP and the unit is + -- a spec with a body, the elaboration entity is initialized + -- here. This is done because it's the only way to accomplish + -- initialization of such entities, as there is no mechanism + -- provided for initializing global variables at load time on + -- AAMP. + + if AAMP_On_Target + and then U.Utype = Is_Spec + and then Units.Table (Unum_Spec).Set_Elab_Entity + then + Set_String (" E"); + Set_Unit_Number (Unum_Spec); + Set_String (" := 0;"); + Write_Statement_Buffer; + end if; + + Check_Elab_Flag := + 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 VM_Target = CLI_Target and then U.Unit_Kind /= 's' then + if Name_Buffer (Name_Len) = 's' then + Name_Buffer (Name_Len - 1 .. Name_Len + 12) := + "_pkg'elab_spec"; + else + Name_Buffer (Name_Len - 1 .. Name_Len + 12) := + "_pkg'elab_body"; + end if; + + Name_Len := Name_Len + 12; + + else + 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; + 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 + then + Set_String (" E"); + Set_Unit_Number (Unum_Spec); + + -- The AAMP target has no notion of shared libraries, and + -- there's no possibility of reelaboration, so we treat the + -- the elaboration var as a flag instead of a counter and + -- simply set it. + + if AAMP_On_Target then + Set_String (" := 1;"); + + -- Otherwise (normal case), increment elaboration counter + + else + Set_String (" := E"); + Set_Unit_Number (Unum_Spec); + Set_String (" + 1;"); + end if; + + Write_Statement_Buffer; + end if; + end if; + end; + end loop; + end Gen_Elab_Calls; + + ------------------------ + -- Gen_Elab_Externals -- + ------------------------ + + procedure Gen_Elab_Externals is + begin + if CodePeer_Mode then + return; + end if; + + for E in Elab_Order.First .. Elab_Order.Last loop + declare + Unum : constant Unit_Id := Elab_Order.Table (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 + Set_String (" "); + Set_String ("E"); + Set_Unit_Number (Unum); + + case VM_Target is + when No_VM | JVM_Target => + Set_String (" : Short_Integer; pragma Import (Ada, "); + when CLI_Target => + Set_String (" : Short_Integer; pragma Import (CIL, "); + end case; + + Set_String ("E"); + Set_Unit_Number (Unum); + Set_String (", """); + Get_Name_String (U.Uname); + + -- In the case of JGNAT we need to emit an Import name that + -- includes the class name (using '$' separators in the case + -- of a child unit name). + + if VM_Target /= No_VM then + for J in 1 .. Name_Len - 2 loop + if VM_Target = CLI_Target + or else Name_Buffer (J) /= '.' + then + Set_Char (Name_Buffer (J)); + else + Set_String ("$"); + end if; + end loop; + + if VM_Target /= CLI_Target or else U.Unit_Kind = 's' then + Set_String ("."); + else + Set_String ("_pkg."); + end if; + + -- If the unit name is very long, then split the + -- Import link name across lines using "&" (occurs + -- in some C2 tests). + + if 2 * Name_Len + 60 > Hostparm.Max_Line_Length then + Set_String (""" &"); + Write_Statement_Buffer; + Set_String (" """); + end if; + end if; + + 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 is + begin + WBI (" -- BEGIN ELABORATION ORDER"); + + for J in Elab_Order.First .. Elab_Order.Last loop + Set_String (" -- "); + Get_Name_String (Units.Table (Elab_Order.Table (J)).Uname); + Set_Name_Buffer; + Write_Statement_Buffer; + end loop; + + WBI (" -- END ELABORATION ORDER"); + WBI (""); + end Gen_Elab_Order; + + -------------------------- + -- Gen_Finalize_Library -- + -------------------------- + + procedure Gen_Finalize_Library is + Count : Int := 1; + U : Unit_Record; + Uspec : Unit_Record; + Unum : Unit_Id; + + 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; + + -- Start of processing for Gen_Finalize_Library + + begin + if CodePeer_Mode then + return; + end if; + + for E in reverse Elab_Order.First .. Elab_Order.Last loop + Unum := Elab_Order.Table (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 (CIL, F<Count>, + -- "xx.yy_pkg.xx__yy__finalize_[body|spec]"); + -- -- for .NET targets + + -- pragma Import (Java, F<Count>, + -- "xx$yy.xx__yy__finalize_[body|spec]"); + -- -- for JVM targets + + -- pragma Import (Ada, F<Count>, + -- "xx__yy__finalize_[body|spec]"); + -- -- for default targets + + if VM_Target = CLI_Target then + Set_String (" pragma Import (CIL, F"); + elsif VM_Target = JVM_Target then + Set_String (" pragma Import (Java, F"); + else + Set_String (" pragma Import (Ada, F"); + end if; + + Set_Int (Count); + Set_String (", """); + + -- Perform name construction + + -- .NET xx.yy_pkg.xx__yy__finalize + + if VM_Target = CLI_Target then + Set_Unit_Name (Mode => Dot); + Set_String ("_pkg."); + + -- JVM xx$yy.xx__yy__finalize + + elsif VM_Target = JVM_Target then + Set_Unit_Name (Mode => Dollar_Sign); + Set_Char ('.'); + end if; + + -- Default xx__yy__finalize + + 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. + + if VM_Target = No_VM then + 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;"); + + -- VM-specific code, use regular Ada to produce the desired behavior + + else + WBI (" if System.Soft_Links.Library_Exception_Set then"); + + Set_String (" Ada.Exceptions.Reraise_Occurrence ("); + Set_String ("System.Soft_Links.Library_Exception);"); + Write_Statement_Buffer; + + WBI (" end if;"); + end if; + + 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 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.First .. Elab_Order.Last 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.Table (E)).SAL_Interface + and then Units.Table (Elab_Order.Table (E)).Utype /= Is_Spec + then + Get_Name_String + (ALIs.Table + (Units.Table (Elab_Order.Table (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 + if VM_Target /= CLI_Target then + 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; + 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, such as VMS, we may get duplicate + -- symbols when linking. + + if not (Opt.No_Run_Time_Mode or else 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 -K output (why???) + + WBI (" -- " & Name_Buffer (1 .. Name_Len)); + + if With_DECGNAT then + Name_Len := 0; + + if Opt.Shared_Libgnat then + Add_Str_To_Name_Buffer (Shared_Lib ("decgnat")); + else + Add_Str_To_Name_Buffer ("-ldecgnat"); + end if; + + Write_Linker_Option; + end if; + + 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) is + begin + -- Acquire settings for Interrupt_State pragmas + + Set_IS_Pragma_Table; + + -- Acquire settings for Priority_Specific_Dispatching pragma + + Set_PSD_Pragma_Table; + + -- For JGNAT the main program is already generated by the compiler + + if VM_Target = JVM_Target then + Bind_Main_Program := False; + end if; + + -- 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.First .. Elab_Order.Last loop + if Units.Table (Elab_Order.Table (E)).No_Elab then + null; + else + Num_Elab_Calls := Num_Elab_Calls + 1; + end if; + end loop; + + -- Generate output file in appropriate language + + Gen_Output_File_Ada (Filename); + end Gen_Output_File; + + ------------------------- + -- Gen_Output_File_Ada -- + ------------------------- + + procedure Gen_Output_File_Ada (Filename : String) 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; + -- 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 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 with of System.Secondary_Stack if active + + if Sec_Stack_Used and then Default_Sec_Stack_Size /= -1 then + WBI ("with System.Secondary_Stack;"); + end if; + + Resolve_Binder_Options; + + -- Usually, adafinal is called using a pragma Import C. Since Import C + -- doesn't have the same semantics for VMs or CodePeer use standard Ada. + + if not Suppress_Standard_Library_On_Target then + if CodePeer_Mode then + WBI ("with System.Standard_Library;"); + elsif VM_Target /= No_VM then + WBI ("with System.Soft_Links;"); + WBI ("with System.Standard_Library;"); + end if; + end if; + + WBI ("package " & Ada_Main & " is"); + WBI (" pragma Warnings (Off);"); + + -- Main program case + + if Bind_Main_Program then + if VM_Target = No_VM 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 runtime 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; + 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); + + if VM_Target = No_VM then + Set_Main_Program_Name; + Set_String (""" & ASCII.NUL;"); + else + Set_String (Name_Buffer (1 .. Name_Len - 2) & """;"); + end if; + + 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 and then VM_Target = No_VM 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; + + Gen_Versions; + Gen_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 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 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; + + if Needs_Library_Finalization then + WBI ("with Ada.Exceptions;"); + end if; + + WBI (""); + WBI ("package body " & Ada_Main & " is"); + WBI (" pragma Warnings (Off);"); + WBI (""); + + -- Generate externals for elaboration entities + + Gen_Elab_Externals; + + 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; + + -- The B.1 (39) implementation advice says that the adainit/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. + + if not Suppress_Standard_Library_On_Target then + WBI (" Is_Elaborated : Boolean := False;"); + 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; + end if; + + Gen_Adafinal; + end if; + + Gen_Adainit; + + if Bind_Main_Program and then VM_Target = No_VM then + Gen_Main; + end if; + + -- Output object file list and the Ada body is complete + + Gen_Object_Files_Options; + + 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 + -- The main program generated by JGNAT expects a package called + -- ada_<main procedure>. + if VM_Target /= No_VM then + Get_Name_String (Units.Table (First_Unit_Entry).Uname); + return "ada_" & Get_Main_Unit_Name (Name_Buffer (1 .. Name_Len - 2)); + end if; + + -- 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 return Boolean is + U : Unit_Record; + Unum : Unit_Id; + + begin + for E in reverse Elab_Order.First .. Elab_Order.Last loop + Unum := Elab_Order.Table (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; + + ---------------------- + -- Lt_Linker_Option -- + ---------------------- + + function Lt_Linker_Option (Op1, 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 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 an helper to + -- avoid to explicitely deal 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 Check_Package + + begin + for E in Elab_Order.First .. Elab_Order.Last loop + Get_Name_String (Units.Table (Elab_Order.Table (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 declib and the "dec" package + + if OpenVMS_On_Target then + Check_Package (With_DECGNAT, "dec%s"); + end if; + + -- 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"); + end loop; + end Resolve_Binder_Options; + + ----------------- + -- Set_Boolean -- + ----------------- + + procedure Set_Boolean (B : Boolean) is + True_Str : constant String := "True"; + False_Str : constant String := "False"; + begin + if B then + Statement_Buffer (Last + 1 .. Last + True_Str'Length) := True_Str; + Last := Last + True_Str'Length; + else + Statement_Buffer (Last + 1 .. Last + False_Str'Length) := False_Str; + Last := Last + False_Str'Length; + end if; + end Set_Boolean; + + -------------- + -- Set_Char -- + -------------- + + procedure Set_Char (C : Character) is + begin + Last := Last + 1; + Statement_Buffer (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; + + Last := Last + 1; + Statement_Buffer (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 (Last + 1 .. Last + S'Length) := S; + Last := Last + S'Length; + end Set_String; + + ------------------------ + -- Set_String_Replace -- + ------------------------ + + procedure Set_String_Replace (S : String) is + begin + Statement_Buffer (Last - S'Length + 1 .. Last) := S; + end Set_String_Replace; + + ------------------- + -- Set_Unit_Name -- + ------------------- + + procedure Set_Unit_Name (Mode : Qualification_Mode := Double_Underscores) is + begin + for J in 1 .. Name_Len - 2 loop + if Name_Buffer (J) = '.' then + if Mode = Double_Underscores then + Set_String ("__"); + elsif Mode = Dot then + Set_Char ('.'); + else + Set_Char ('$'); + end if; + 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_Statement_Buffer -- + ---------------------------- + + procedure Write_Statement_Buffer is + begin + WBI (Statement_Buffer (1 .. Last)); + 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; |