+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
--- --
--- S Y S T E M . T A S K I N G . D E B U G --
--- --
--- B o d y --
--- --
--- $Revision: 1.3.10.1 $
--- --
--- Copyright (C) 1997-2001 Free Software Foundation, Inc. --
--- --
--- GNARL 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 2, or (at your option) any later ver- --
--- sion. GNARL 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 GNARL; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
--- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
--- --
--- GNARL was developed by the GNARL team at Florida State University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
--- This package encapsulates all direct interfaces to task debugging services
--- that are needed by gdb with gnat mode (1.13 and higher)
-
--- Note : This file *must* be compiled with debugging information
-
--- Do not add any dependency to GNARL packages since this package is used
--- in both normal and resticted (ravenscar) environments.
-
-with System.Task_Info,
- System.Task_Primitives.Operations,
- Unchecked_Conversion;
-
-package body System.Tasking.Debug is
-
- use Interfaces.C;
-
- package STPO renames System.Task_Primitives.Operations;
-
- type Integer_Address is mod 2 ** Standard'Address_Size;
- type Integer_Address_Ptr is access all Integer_Address;
-
- function "+" is new
- Unchecked_Conversion (System.Address, Integer_Address_Ptr);
-
- function "+" is new
- Unchecked_Conversion (Task_ID, Integer_Address);
-
- Hex_Address_Width : constant := (Standard'Address_Size / 4);
-
- Zero_Pos : constant := Character'Pos ('0');
-
- Hex_Digits : constant array (0 .. Integer_Address'(15)) of Character :=
- "0123456789abcdef";
-
- subtype Buf_Range is Integer range 1 .. 80;
- type Buf_Array is array (Buf_Range) of aliased Character;
-
- type Buffer is record
- Next : Buf_Range := Buf_Range'First;
- Chars : Buf_Array := (Buf_Range => ' ');
- end record;
-
- type Buffer_Ptr is access all Buffer;
-
- type Trace_Flag_Set is array (Character) of Boolean;
-
- Trace_On : Trace_Flag_Set := ('A' .. 'Z' => False, others => True);
-
- -----------------------
- -- Local Subprograms --
- -----------------------
-
- procedure Put
- (T : ST.Task_ID;
- Width : Integer;
- Buffer : Buffer_Ptr);
- -- Put TCB pointer T, (coded in hexadecimal) into Buffer
- -- right-justified in Width characters.
-
- procedure Put
- (N : Integer_Address;
- Width : Integer;
- Buffer : Buffer_Ptr);
- -- Put N (coded in decimal) into Buf right-justified in Width
- -- characters starting at Buf (Next).
-
- procedure Put
- (S : String;
- Width : Integer;
- Buffer : Buffer_Ptr);
- -- Put string S into Buf left-justified in Width characters
- -- starting with space in Buf (Next), truncated as necessary.
-
- procedure Put
- (C : Character;
- Buffer : Buffer_Ptr);
- -- Put character C into Buf, left-justified, starting at Buf (Next)
-
- procedure Space (Buffer : Buffer_Ptr);
- -- Increment Next, resulting in a space
-
- procedure Space
- (N : Integer;
- Buffer : Buffer_Ptr);
- -- Increment Next by N, resulting in N spaces
-
- procedure Clear (Buffer : Buffer_Ptr);
- -- Clear Buf and reset Next to 1
-
- procedure Write_Buf (Buffer : Buffer_Ptr);
- -- Write contents of Buf (1 .. Next) to standard output
-
- -----------
- -- Clear --
- -----------
-
- procedure Clear (Buffer : Buffer_Ptr) is
- Next : Buf_Range renames Buffer.Next;
- Buf : Buf_Array renames Buffer.Chars;
-
- begin
- Buf := (Buf_Range => ' ');
- Next := 1;
- end Clear;
-
- -----------
- -- Image --
- -----------
-
- function Image (T : ST.Task_ID) return String is
- Buf : aliased Buffer;
- Result : String (1 .. Hex_Address_Width + 21);
-
- use type System.Task_Info.Task_Image_Type;
-
- begin
- Clear (Buf'Unchecked_Access);
- Put (T, Hex_Address_Width, Buf'Unchecked_Access);
- Put (':', Buf'Unchecked_Access);
- Put (Integer_Address (T.Serial_Number), 4, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
-
- if T.Common.Task_Image = null then
- Put ("", 15, Buf'Unchecked_Access);
- else
- Put (T.Common.Task_Image.all, 15, Buf'Unchecked_Access);
- end if;
-
- for J in Result'Range loop
- Result (J) := Buf.Chars (J);
- end loop;
-
- return Result;
- end Image;
-
- ----------------
- -- List_Tasks --
- ----------------
-
- procedure List_Tasks is
- C : ST.Task_ID;
-
- begin
- Print_Task_Info_Header;
- C := All_Tasks_List;
-
- while C /= null loop
- Print_Task_Info (C);
- C := C.Common.All_Tasks_Link;
- end loop;
- end List_Tasks;
-
- -----------------------
- -- Print_Accept_Info --
- -----------------------
-
- procedure Print_Accept_Info (T : ST.Task_ID) is
- Buf : aliased Buffer;
-
- begin
- if T.Open_Accepts = null then
- return;
- end if;
-
- Clear (Buf'Unchecked_Access);
- Space (10, Buf'Unchecked_Access);
- Put ("accepting:", 11, Buf'Unchecked_Access);
-
- for J in T.Open_Accepts.all'Range loop
- Put (Integer_Address (T.Open_Accepts (J).S), 3, Buf'Unchecked_Access);
- end loop;
-
- Write_Buf (Buf'Unchecked_Access);
- end Print_Accept_Info;
-
- ------------------------
- -- Print_Current_Task --
- ------------------------
-
- procedure Print_Current_Task is
- begin
- Print_Task_Info (STPO.Self);
- end Print_Current_Task;
-
- ---------------------
- -- Print_Task_Info --
- ---------------------
-
- procedure Print_Task_Info (T : ST.Task_ID) is
- Entry_Call : Entry_Call_Link;
- Buf : aliased Buffer;
-
- use type System.Task_Info.Task_Image_Type;
-
- begin
- Clear (Buf'Unchecked_Access);
- Put (T, Hex_Address_Width, Buf'Unchecked_Access);
- Put (':', Buf'Unchecked_Access);
- Put (' ', Buf'Unchecked_Access);
- Put (':', Buf'Unchecked_Access);
-
- if T = null then
- Put (" null task", 10, Buf'Unchecked_Access);
- Write_Buf (Buf'Unchecked_Access);
- return;
- end if;
-
- Put (Integer_Address (T.Serial_Number), 4, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
-
- if T.Common.Task_Image = null then
- Put ("", 15, Buf'Unchecked_Access);
- else
- Put (T.Common.Task_Image.all, 15, Buf'Unchecked_Access);
- end if;
-
- Space (Buf'Unchecked_Access);
- Put (Task_States'Image (T.Common.State), 10, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
-
- if T.Callable then
- Put ('C', Buf'Unchecked_Access);
- else
- Space (Buf'Unchecked_Access);
- end if;
-
- if T.Open_Accepts /= null then
- Put ('A', Buf'Unchecked_Access);
- else
- Space (Buf'Unchecked_Access);
- end if;
-
- if T.Common.Call /= null then
- Put ('C', Buf'Unchecked_Access);
- else
- Space (Buf'Unchecked_Access);
- end if;
-
- if T.Terminate_Alternative then
- Put ('T', Buf'Unchecked_Access);
- else
- Space (Buf'Unchecked_Access);
- end if;
-
- if T.Aborting then
- Put ('A', Buf'Unchecked_Access);
- else
- Space (Buf'Unchecked_Access);
- end if;
-
- if T.Deferral_Level = 0 then
- Space (3, Buf'Unchecked_Access);
- else
- Put ('D', Buf'Unchecked_Access);
- if T.Deferral_Level < 0 then
- Put ("<0", 2, Buf'Unchecked_Access);
- elsif T.Deferral_Level > 1 then
- Put (Integer_Address (T.Deferral_Level), 2, Buf'Unchecked_Access);
- else
- Space (2, Buf'Unchecked_Access);
- end if;
- end if;
-
- Space (Buf'Unchecked_Access);
- Put (Integer_Address (T.Master_of_Task), 1, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- Put (Integer_Address (T.Master_Within), 1, Buf'Unchecked_Access);
- Put (',', Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- Put (Integer_Address (T.Awake_Count), 1, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- Put (Integer_Address (T.Alive_Count), 1, Buf'Unchecked_Access);
- Put (',', Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- Put (Integer_Address (T.ATC_Nesting_Level), 1, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- Put (Integer_Address (T.Pending_ATC_Level), 1, Buf'Unchecked_Access);
- Put (',', Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- Put (Integer_Address (T.Common.Wait_Count), 1, Buf'Unchecked_Access);
- Put (',', Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- Put (Integer_Address (T.User_State), 1, Buf'Unchecked_Access);
- Write_Buf (Buf'Unchecked_Access);
-
- if T.Common.Call /= null then
- Entry_Call := T.Common.Call;
- Clear (Buf'Unchecked_Access);
- Space (10, Buf'Unchecked_Access);
- Put ("serving:", 8, Buf'Unchecked_Access);
-
- while Entry_Call /= null loop
- Put (Integer_Address
- (Entry_Call.Self.Serial_Number), 5, Buf'Unchecked_Access);
- Entry_Call := Entry_Call.Acceptor_Prev_Call;
- end loop;
-
- Write_Buf (Buf'Unchecked_Access);
- end if;
-
- Print_Accept_Info (T);
- end Print_Task_Info;
-
- ----------------------------
- -- Print_Task_Info_Header --
- ----------------------------
-
- procedure Print_Task_Info_Header is
- Buf : aliased Buffer;
-
- begin
- Clear (Buf'Unchecked_Access);
- Put ("TASK_ID", Hex_Address_Width, Buf'Unchecked_Access);
- Put (':', Buf'Unchecked_Access);
- Put ('F', Buf'Unchecked_Access);
- Put (':', Buf'Unchecked_Access);
- Put ("SERIAL_NUMBER", 4, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- Put (" NAME", 15, Buf'Unchecked_Access);
- Put (" STATE", 10, Buf'Unchecked_Access);
- Space (11, Buf'Unchecked_Access);
- Put ("MAST", 5, Buf'Unchecked_Access);
- Put ("AWAK", 5, Buf'Unchecked_Access);
- Put ("ATC", 5, Buf'Unchecked_Access);
- Put ("WT", 3, Buf'Unchecked_Access);
- Put ("DBG", 3, Buf'Unchecked_Access);
- Write_Buf (Buf'Unchecked_Access);
- end Print_Task_Info_Header;
-
- ---------
- -- Put --
- ---------
-
- procedure Put
- (T : ST.Task_ID;
- Width : Integer;
- Buffer : Buffer_Ptr)
- is
- J : Integer;
- X : Integer_Address := +T;
- Next : Buf_Range renames Buffer.Next;
- Buf : Buf_Array renames Buffer.Chars;
- First : constant Integer := Next;
- Wdth : Integer := Width;
-
- begin
- if Wdth > Buf'Last - Next then
- Wdth := Buf'Last - Next;
- end if;
-
- J := Next + (Wdth - 1);
-
- if X = 0 then
- Buf (J) := '0';
-
- else
- while X > 0 loop
- Buf (J) := Hex_Digits (X rem 16);
- J := J - 1;
- X := X / 16;
-
- -- Check for overflow
-
- if J < First and then X > 0 then
- Buf (J + 1) := '*';
- exit;
- end if;
-
- end loop;
- end if;
-
- Next := Next + Wdth;
- end Put;
-
- procedure Put
- (N : Integer_Address;
- Width : Integer;
- Buffer : Buffer_Ptr)
- is
- J : Integer;
- X : Integer_Address := N;
- Next : Buf_Range renames Buffer.Next;
- Buf : Buf_Array renames Buffer.Chars;
- First : constant Integer := Next;
- Wdth : Integer := Width;
-
- begin
- if Wdth > Buf'Last - Next then
- Wdth := Buf'Last - Next;
- end if;
-
- J := Next + (Wdth - 1);
-
- if N = 0 then
- Buf (J) := '0';
-
- else
- while X > 0 loop
- Buf (J) := Hex_Digits (X rem 10);
- J := J - 1;
- X := X / 10;
-
- -- Check for overflow
-
- if J < First and then X > 0 then
- Buf (J + 1) := '*';
- exit;
- end if;
- end loop;
- end if;
-
- Next := Next + Wdth;
- end Put;
-
- procedure Put
- (S : String;
- Width : Integer;
- Buffer : Buffer_Ptr)
- is
- Next : Buf_Range renames Buffer.Next;
- Buf : Buf_Array renames Buffer.Chars;
- Bound : constant Integer := Integer'Min (Next + Width, Buf'Last);
- J : Integer := Next;
-
- begin
- for K in S'Range loop
-
- -- Check overflow
-
- if J >= Bound then
- Buf (J - 1) := '*';
- exit;
- end if;
-
- Buf (J) := S (K);
- J := J + 1;
- end loop;
-
- Next := Bound;
- end Put;
-
- procedure Put
- (C : Character;
- Buffer : Buffer_Ptr)
- is
- Next : Buf_Range renames Buffer.Next;
- Buf : Buf_Array renames Buffer.Chars;
-
- begin
- if Next >= Buf'Last then
- Buf (Next) := '*';
- else Buf (Next) := C;
- Next := Next + 1;
- end if;
- end Put;
-
- ----------------------
- -- Resume_All_Tasks --
- ----------------------
-
- procedure Resume_All_Tasks (Thread_Self : OS_Interface.Thread_Id) is
- C : ST.Task_ID;
- R : Boolean;
-
- begin
- STPO.Lock_All_Tasks_List;
- C := All_Tasks_List;
-
- while C /= null loop
- R := STPO.Resume_Task (C, Thread_Self);
- C := C.Common.All_Tasks_Link;
- end loop;
-
- STPO.Unlock_All_Tasks_List;
- end Resume_All_Tasks;
-
- ----------
- -- Self --
- ----------
-
- function Self return Task_ID is
- begin
- return STPO.Self;
- end Self;
-
- ---------------
- -- Set_Trace --
- ---------------
-
- procedure Set_Trace
- (Flag : Character;
- Value : Boolean := True)
- is
- begin
- Trace_On (Flag) := Value;
- end Set_Trace;
-
- --------------------
- -- Set_User_State --
- --------------------
-
- procedure Set_User_State (Value : Integer) is
- begin
- STPO.Self.User_State := Value;
- end Set_User_State;
-
- -----------
- -- Space --
- -----------
-
- procedure Space (Buffer : Buffer_Ptr) is
- Next : Buf_Range renames Buffer.Next;
- Buf : Buf_Array renames Buffer.Chars;
-
- begin
- if Next >= Buf'Last then
- Buf (Next) := '*';
- else
- Next := Next + 1;
- end if;
- end Space;
-
- procedure Space
- (N : Integer;
- Buffer : Buffer_Ptr)
- is
- Next : Buf_Range renames Buffer.Next;
- Buf : Buf_Array renames Buffer.Chars;
-
- begin
- if Next + N > Buf'Last then
- Buf (Next) := '*';
- else
- Next := Next + N;
- end if;
- end Space;
-
- -----------------------
- -- Suspend_All_Tasks --
- -----------------------
-
- procedure Suspend_All_Tasks (Thread_Self : OS_Interface.Thread_Id) is
- C : ST.Task_ID;
- R : Boolean;
-
- begin
- STPO.Lock_All_Tasks_List;
- C := All_Tasks_List;
-
- while C /= null loop
- R := STPO.Suspend_Task (C, Thread_Self);
- C := C.Common.All_Tasks_Link;
- end loop;
-
- STPO.Unlock_All_Tasks_List;
- end Suspend_All_Tasks;
-
- ------------------------
- -- Task_Creation_Hook --
- ------------------------
-
- procedure Task_Creation_Hook (Thread : OS_Interface.Thread_Id) is
- pragma Inspection_Point (Thread);
- -- gdb needs to access the thread parameter in order to implement
- -- the multitask mode under VxWorks.
-
- begin
- null;
- end Task_Creation_Hook;
-
- ---------------------------
- -- Task_Termination_Hook --
- ---------------------------
-
- procedure Task_Termination_Hook is
- begin
- null;
- end Task_Termination_Hook;
-
- -----------
- -- Trace --
- -----------
-
- procedure Trace
- (Self_ID : ST.Task_ID;
- Msg : String;
- Other_ID : ST.Task_ID;
- Flag : Character)
- is
- Buf : aliased Buffer;
- use type System.Task_Info.Task_Image_Type;
-
- begin
- if Trace_On (Flag) then
- Clear (Buf'Unchecked_Access);
- Put (Self_ID, Hex_Address_Width, Buf'Unchecked_Access);
- Put (':', Buf'Unchecked_Access);
- Put (Flag, Buf'Unchecked_Access);
- Put (':', Buf'Unchecked_Access);
- Put
- (Integer_Address (Self_ID.Serial_Number),
- 4, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
-
- if Self_ID.Common.Task_Image = null then
- Put ("", 15, Buf'Unchecked_Access);
- else
- Put (Self_ID.Common.Task_Image.all, 15, Buf'Unchecked_Access);
- end if;
-
- Space (Buf'Unchecked_Access);
-
- if Other_ID /= null then
- Put
- (Integer_Address (Other_ID.Serial_Number),
- 4, Buf'Unchecked_Access);
- Space (Buf'Unchecked_Access);
- end if;
-
- Put (Msg, Buf.Chars'Last - Buf.Next + 1, Buf'Unchecked_Access);
- Write_Buf (Buf'Unchecked_Access);
- end if;
- end Trace;
-
- procedure Trace
- (Self_ID : ST.Task_ID;
- Msg : String;
- Flag : Character)
- is
- begin
- Trace (Self_ID, Msg, null, Flag);
- end Trace;
-
- procedure Trace
- (Msg : String;
- Flag : Character)
- is
- Self_ID : constant ST.Task_ID := STPO.Self;
-
- begin
- Trace (Self_ID, Msg, null, Flag);
- end Trace;
-
- procedure Trace
- (Msg : String;
- Other_ID : ST.Task_ID;
- Flag : Character)
- is
- Self_ID : constant ST.Task_ID := STPO.Self;
-
- begin
- Trace (Self_ID, Msg, null, Flag);
- end Trace;
-
- ---------------
- -- Write_Buf --
- ---------------
-
- procedure Write_Buf (Buffer : Buffer_Ptr) is
- Next : Buf_Range renames Buffer.Next;
- Buf : Buf_Array renames Buffer.Chars;
-
- procedure put_char (C : Integer);
- pragma Import (C, put_char, "put_char");
-
- begin
- for J in 1 .. Next - 1 loop
- put_char (Character'Pos (Buf (J)));
- end loop;
-
- put_char (Character'Pos (ASCII.LF));
- end Write_Buf;
-
-end System.Tasking.Debug;
projects / msp430-gcc.git / blobdiff