| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S W I T C H - B -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 2001-2014, 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 Debug; use Debug; |
| with Osint; use Osint; |
| with Opt; use Opt; |
| |
| with System.WCh_Con; use System.WCh_Con; |
| |
| package body Switch.B is |
| |
| -------------------------- |
| -- Scan_Binder_Switches -- |
| -------------------------- |
| |
| procedure Scan_Binder_Switches (Switch_Chars : String) is |
| Max : constant Integer := Switch_Chars'Last; |
| Ptr : Integer := Switch_Chars'First; |
| C : Character := ' '; |
| |
| function Get_Optional_Filename return String_Ptr; |
| -- If current character is '=', return a newly allocated string that |
| -- contains the remainder of the current switch (after the '='), else |
| -- return null. |
| |
| function Get_Stack_Size (S : Character) return Int; |
| -- Used for -d and -D to scan stack size including handling k/m. S is |
| -- set to 'd' or 'D' to indicate the switch being scanned. |
| |
| --------------------------- |
| -- Get_Optional_Filename -- |
| --------------------------- |
| |
| function Get_Optional_Filename return String_Ptr is |
| Result : String_Ptr; |
| |
| begin |
| if Ptr <= Max and then Switch_Chars (Ptr) = '=' then |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| else |
| Result := new String'(Switch_Chars (Ptr + 1 .. Max)); |
| Ptr := Max + 1; |
| return Result; |
| end if; |
| end if; |
| |
| return null; |
| end Get_Optional_Filename; |
| |
| -------------------- |
| -- Get_Stack_Size -- |
| -------------------- |
| |
| function Get_Stack_Size (S : Character) return Int is |
| Result : Int; |
| |
| begin |
| Scan_Pos (Switch_Chars, Max, Ptr, Result, S); |
| |
| -- In the following code, we enable overflow checking since the |
| -- multiplication by K or M may cause overflow, which is an error. |
| |
| declare |
| pragma Unsuppress (Overflow_Check); |
| |
| begin |
| -- Check for additional character 'k' (for kilobytes) or 'm' (for |
| -- Megabytes), but only if we have not reached the end of the |
| -- switch string. Note that if this appears before the end of the |
| -- string we will get an error when we test to make sure that the |
| -- string is exhausted (at the end of the case). |
| |
| if Ptr <= Max then |
| if Switch_Chars (Ptr) = 'k' then |
| Result := Result * 1024; |
| Ptr := Ptr + 1; |
| |
| elsif Switch_Chars (Ptr) = 'm' then |
| Result := Result * (1024 * 1024); |
| Ptr := Ptr + 1; |
| end if; |
| end if; |
| |
| exception |
| when Constraint_Error => |
| Osint.Fail ("numeric value out of range for switch: " & S); |
| end; |
| |
| return Result; |
| end Get_Stack_Size; |
| |
| -- Start of processing for Scan_Binder_Switches |
| |
| begin |
| -- Skip past the initial character (must be the switch character) |
| |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| else |
| Ptr := Ptr + 1; |
| end if; |
| |
| -- A little check, "gnat" at the start of a switch is not allowed except |
| -- for the compiler |
| |
| if Switch_Chars'Last >= Ptr + 3 |
| and then Switch_Chars (Ptr .. Ptr + 3) = "gnat" |
| then |
| Osint.Fail ("invalid switch: """ & Switch_Chars & """" |
| & " (gnat not needed here)"); |
| end if; |
| |
| -- Loop to scan through switches given in switch string |
| |
| Check_Switch : begin |
| C := Switch_Chars (Ptr); |
| |
| case C is |
| |
| -- Processing for a switch |
| |
| when 'a' => |
| Ptr := Ptr + 1; |
| Use_Pragma_Linker_Constructor := True; |
| |
| -- Processing for A switch |
| |
| when 'A' => |
| Ptr := Ptr + 1; |
| Output_ALI_List := True; |
| ALI_List_Filename := Get_Optional_Filename; |
| |
| -- Processing for b switch |
| |
| when 'b' => |
| Ptr := Ptr + 1; |
| Brief_Output := True; |
| |
| -- Processing for c switch |
| |
| when 'c' => |
| Ptr := Ptr + 1; |
| Check_Only := True; |
| |
| -- Processing for d switch |
| |
| when 'd' => |
| |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| Ptr := Ptr + 1; |
| C := Switch_Chars (Ptr); |
| |
| -- Case where character after -d is a digit (default stack size) |
| |
| if C in '0' .. '9' then |
| |
| -- In this case, we process the default primary stack size |
| |
| Default_Stack_Size := Get_Stack_Size ('d'); |
| |
| -- Case where character after -d is not digit (debug flags) |
| |
| else |
| -- Note: for the debug switch, the remaining characters in this |
| -- switch field must all be debug flags, since all valid switch |
| -- characters are also valid debug characters. This switch is |
| -- not documented on purpose because it is only used by the |
| -- implementors. |
| |
| -- Loop to scan out debug flags |
| |
| loop |
| C := Switch_Chars (Ptr); |
| |
| if C in 'a' .. 'z' or else C in 'A' .. 'Z' then |
| Set_Debug_Flag (C); |
| else |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| Ptr := Ptr + 1; |
| exit when Ptr > Max; |
| end loop; |
| end if; |
| |
| -- Processing for D switch |
| |
| when 'D' => |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| Ptr := Ptr + 1; |
| Default_Sec_Stack_Size := Get_Stack_Size ('D'); |
| |
| -- Processing for e switch |
| |
| when 'e' => |
| Ptr := Ptr + 1; |
| Elab_Dependency_Output := True; |
| |
| -- Processing for E switch |
| |
| when 'E' => |
| Ptr := Ptr + 1; |
| Exception_Tracebacks := True; |
| |
| -- Processing for F switch |
| |
| when 'F' => |
| Ptr := Ptr + 1; |
| Force_Checking_Of_Elaboration_Flags := True; |
| |
| -- Processing for g switch |
| |
| when 'g' => |
| Ptr := Ptr + 1; |
| |
| if Ptr <= Max then |
| C := Switch_Chars (Ptr); |
| |
| if C in '0' .. '3' then |
| Debugger_Level := |
| Character'Pos |
| (Switch_Chars (Ptr)) - Character'Pos ('0'); |
| Ptr := Ptr + 1; |
| end if; |
| |
| else |
| Debugger_Level := 2; |
| end if; |
| |
| -- Processing for h switch |
| |
| when 'h' => |
| Ptr := Ptr + 1; |
| Usage_Requested := True; |
| |
| -- Processing for i switch |
| |
| when 'i' => |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| Ptr := Ptr + 1; |
| C := Switch_Chars (Ptr); |
| |
| if C in '1' .. '5' |
| or else C = '8' |
| or else C = 'p' |
| or else C = 'f' |
| or else C = 'n' |
| or else C = 'w' |
| then |
| Identifier_Character_Set := C; |
| Ptr := Ptr + 1; |
| else |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| -- Processing for K switch |
| |
| when 'K' => |
| Ptr := Ptr + 1; |
| Output_Linker_Option_List := True; |
| |
| -- Processing for l switch |
| |
| when 'l' => |
| Ptr := Ptr + 1; |
| Elab_Order_Output := True; |
| |
| -- Processing for m switch |
| |
| when 'm' => |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| Ptr := Ptr + 1; |
| Scan_Pos (Switch_Chars, Max, Ptr, Maximum_Messages, C); |
| |
| -- Processing for n switch |
| |
| when 'n' => |
| Ptr := Ptr + 1; |
| Bind_Main_Program := False; |
| |
| -- Note: The -L option of the binder also implies -n, so |
| -- any change here must also be reflected in the processing |
| -- for -L that is found in Gnatbind.Scan_Bind_Arg. |
| |
| -- Processing for o switch |
| |
| when 'o' => |
| Ptr := Ptr + 1; |
| |
| if Output_File_Name_Present then |
| Osint.Fail ("duplicate -o switch"); |
| else |
| Output_File_Name_Present := True; |
| end if; |
| |
| -- Processing for O switch |
| |
| when 'O' => |
| Ptr := Ptr + 1; |
| Output_Object_List := True; |
| Object_List_Filename := Get_Optional_Filename; |
| |
| -- Processing for p switch |
| |
| when 'p' => |
| Ptr := Ptr + 1; |
| Pessimistic_Elab_Order := True; |
| |
| -- Processing for P switch |
| |
| when 'P' => |
| Ptr := Ptr + 1; |
| CodePeer_Mode := True; |
| |
| -- Processing for q switch |
| |
| when 'q' => |
| Ptr := Ptr + 1; |
| Quiet_Output := True; |
| |
| -- Processing for r switch |
| |
| when 'r' => |
| Ptr := Ptr + 1; |
| List_Restrictions := True; |
| |
| -- Processing for R switch |
| |
| when 'R' => |
| Ptr := Ptr + 1; |
| List_Closure := True; |
| |
| if Ptr <= Max and then Switch_Chars (Ptr) = 'a' then |
| Ptr := Ptr + 1; |
| List_Closure_All := True; |
| end if; |
| |
| -- Processing for s switch |
| |
| when 's' => |
| Ptr := Ptr + 1; |
| All_Sources := True; |
| Check_Source_Files := True; |
| |
| -- Processing for t switch |
| |
| when 't' => |
| Ptr := Ptr + 1; |
| Tolerate_Consistency_Errors := True; |
| |
| -- Processing for T switch |
| |
| when 'T' => |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| Ptr := Ptr + 1; |
| Time_Slice_Set := True; |
| Scan_Nat (Switch_Chars, Max, Ptr, Time_Slice_Value, C); |
| Time_Slice_Value := Time_Slice_Value * 1_000; |
| |
| -- Processing for u switch |
| |
| when 'u' => |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| Ptr := Ptr + 1; |
| Dynamic_Stack_Measurement := True; |
| Scan_Nat |
| (Switch_Chars, |
| Max, |
| Ptr, |
| Dynamic_Stack_Measurement_Array_Size, |
| C); |
| |
| -- Processing for v switch |
| |
| when 'v' => |
| Ptr := Ptr + 1; |
| Verbose_Mode := True; |
| |
| -- Processing for w switch |
| |
| when 'w' => |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| -- For the binder we only allow suppress/error cases |
| |
| Ptr := Ptr + 1; |
| |
| case Switch_Chars (Ptr) is |
| when 'e' => |
| Warning_Mode := Treat_As_Error; |
| |
| when 's' => |
| Warning_Mode := Suppress; |
| |
| when others => |
| Bad_Switch (Switch_Chars); |
| end case; |
| |
| Ptr := Ptr + 1; |
| |
| -- Processing for W switch |
| |
| when 'W' => |
| Ptr := Ptr + 1; |
| |
| if Ptr > Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| begin |
| Wide_Character_Encoding_Method := |
| Get_WC_Encoding_Method (Switch_Chars (Ptr)); |
| exception |
| when Constraint_Error => |
| Bad_Switch (Switch_Chars); |
| end; |
| |
| Wide_Character_Encoding_Method_Specified := True; |
| |
| Upper_Half_Encoding := |
| Wide_Character_Encoding_Method in WC_Upper_Half_Encoding_Method; |
| |
| Ptr := Ptr + 1; |
| |
| -- Processing for x switch |
| |
| when 'x' => |
| Ptr := Ptr + 1; |
| All_Sources := False; |
| Check_Source_Files := False; |
| |
| -- Processing for X switch |
| |
| when 'X' => |
| if Ptr = Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| Ptr := Ptr + 1; |
| Scan_Pos (Switch_Chars, Max, Ptr, Default_Exit_Status, C); |
| |
| -- Processing for y switch |
| |
| when 'y' => |
| Ptr := Ptr + 1; |
| Leap_Seconds_Support := True; |
| |
| -- Processing for z switch |
| |
| when 'z' => |
| Ptr := Ptr + 1; |
| No_Main_Subprogram := True; |
| |
| -- Processing for Z switch |
| |
| when 'Z' => |
| Ptr := Ptr + 1; |
| Zero_Formatting := True; |
| |
| -- Processing for --RTS |
| |
| when '-' => |
| |
| if Ptr + 4 <= Max and then |
| Switch_Chars (Ptr + 1 .. Ptr + 3) = "RTS" |
| then |
| Ptr := Ptr + 4; |
| |
| if Switch_Chars (Ptr) /= '=' or else Ptr = Max then |
| Osint.Fail ("missing path for --RTS"); |
| |
| else |
| -- Valid --RTS switch |
| |
| Opt.No_Stdinc := True; |
| Opt.RTS_Switch := True; |
| |
| declare |
| Src_Path_Name : constant String_Ptr := |
| Get_RTS_Search_Dir |
| (Switch_Chars |
| (Ptr + 1 .. Switch_Chars'Last), |
| Include); |
| Lib_Path_Name : constant String_Ptr := |
| Get_RTS_Search_Dir |
| (Switch_Chars |
| (Ptr + 1 .. Switch_Chars'Last), |
| Objects); |
| |
| begin |
| if Src_Path_Name /= null and then |
| Lib_Path_Name /= null |
| then |
| -- Set the RTS_*_Path_Name variables, so that the |
| -- correct directories will be set when a subsequent |
| -- call Osint.Add_Default_Search_Dirs is made. |
| |
| RTS_Src_Path_Name := Src_Path_Name; |
| RTS_Lib_Path_Name := Lib_Path_Name; |
| |
| Ptr := Max + 1; |
| |
| elsif Src_Path_Name = null |
| and then Lib_Path_Name = null |
| then |
| Osint.Fail ("RTS path not valid: missing " & |
| "adainclude and adalib directories"); |
| elsif Src_Path_Name = null then |
| Osint.Fail ("RTS path not valid: missing " & |
| "adainclude directory"); |
| elsif Lib_Path_Name = null then |
| Osint.Fail ("RTS path not valid: missing " & |
| "adalib directory"); |
| end if; |
| end; |
| end if; |
| |
| else |
| Bad_Switch (Switch_Chars); |
| end if; |
| |
| -- Anything else is an error (illegal switch character) |
| |
| when others => |
| Bad_Switch (Switch_Chars); |
| end case; |
| |
| if Ptr <= Max then |
| Bad_Switch (Switch_Chars); |
| end if; |
| end Check_Switch; |
| end Scan_Binder_Switches; |
| |
| end Switch.B; |
