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Diffstat (limited to 'gcc-4.4.3/gcc/ada/s-stchop-vxworks.adb')
| -rw-r--r-- | gcc-4.4.3/gcc/ada/s-stchop-vxworks.adb | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/gcc-4.4.3/gcc/ada/s-stchop-vxworks.adb b/gcc-4.4.3/gcc/ada/s-stchop-vxworks.adb deleted file mode 100644 index 9d1231f5f..000000000 --- a/gcc-4.4.3/gcc/ada/s-stchop-vxworks.adb +++ /dev/null @@ -1,140 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- --- -- --- S Y S T E M . S T A C K _ C H E C K I N G . O P E R A T I O N S -- --- -- --- B o d y -- --- -- --- Copyright (C) 1999-2009, 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 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. -- --- -- --- As a special exception under Section 7 of GPL version 3, you are granted -- --- additional permissions described in the GCC Runtime Library Exception, -- --- version 3.1, as published by the Free Software Foundation. -- --- -- --- You should have received a copy of the GNU General Public License and -- --- a copy of the GCC Runtime Library Exception along with this program; -- --- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- --- <http://www.gnu.org/licenses/>. -- --- -- --- GNARL was developed by the GNARL team at Florida State University. -- --- Extensive contributions were provided by Ada Core Technologies, Inc. -- --- -- ------------------------------------------------------------------------------- - --- This is the VxWorks version of this package. --- This file should be kept synchronized with the general implementation --- provided by s-stchop.adb. - -pragma Restrictions (No_Elaboration_Code); --- We want to guarantee the absence of elaboration code because the --- binder does not handle references to this package. - -with System.Storage_Elements; use System.Storage_Elements; -with System.Parameters; use System.Parameters; -with Interfaces.C; - -package body System.Stack_Checking.Operations is - - -- In order to have stack checking working appropriately on VxWorks we need - -- to extract the stack size information from the VxWorks kernel itself. It - -- means that the library for showing task-related information needs to be - -- linked into the VxWorks system, when using stack checking. The TaskShow - -- library can be linked into the VxWorks system by either: - - -- * defining INCLUDE_SHOW_ROUTINES in config.h when using - -- configuration header files, or - - -- * selecting INCLUDE_TASK_SHOW when using the Tornado project - -- facility. - - Stack_Limit : Address := - Boolean'Pos (Stack_Grows_Down) * Address'First - + Boolean'Pos (not Stack_Grows_Down) * Address'Last; - pragma Export (C, Stack_Limit, "__gnat_stack_limit"); - -- Stack_Limit contains the limit of the stack. This variable is later made - -- a task variable (by calling taskVarAdd) and then correctly set to the - -- stack limit of the task. Before being so initialized its value must be - -- valid so that any subprogram with stack checking enabled will run. We - -- use extreme values according to the direction of the stack. - - type Set_Stack_Limit_Proc_Acc is access procedure; - pragma Convention (C, Set_Stack_Limit_Proc_Acc); - - Set_Stack_Limit_Hook : Set_Stack_Limit_Proc_Acc; - pragma Import (C, Set_Stack_Limit_Hook, "__gnat_set_stack_limit_hook"); - -- Procedure to be called when a task is created to set stack - -- limit. - - procedure Set_Stack_Limit_For_Current_Task; - pragma Convention (C, Set_Stack_Limit_For_Current_Task); - -- Register Initial_SP as the initial stack pointer value for the current - -- task when it starts and Size as the associated stack area size. This - -- should be called once, after the soft-links have been initialized? - - ----------------------------- - -- Initialize_Stack_Limit -- - ----------------------------- - - procedure Initialize_Stack_Limit is - begin - -- For the environment task. - Set_Stack_Limit_For_Current_Task; - - -- Will be called by every created task. - Set_Stack_Limit_Hook := Set_Stack_Limit_For_Current_Task'Access; - end Initialize_Stack_Limit; - - -------------------------------------- - -- Set_Stack_Limit_For_Current_Task -- - -------------------------------------- - - procedure Set_Stack_Limit_For_Current_Task is - use Interfaces.C; - - -- Import from VxWorks. - function Task_Var_Add (Tid : Interfaces.C.int; Var : Address) - return Interfaces.C.int; - pragma Import (C, Task_Var_Add, "taskVarAdd"); - - type OS_Stack_Info is record - Size : Interfaces.C.int; - Base : System.Address; - Limit : System.Address; - end record; - pragma Convention (C, OS_Stack_Info); - -- Type representing the information that we want to extract from the - -- underlying kernel. - - procedure Get_Stack_Info (Stack : not null access OS_Stack_Info); - pragma Import (C, Get_Stack_Info, "__gnat_get_stack_info"); - -- Procedure that fills the stack information associated to the - -- currently executing task. - - Stack_Info : aliased OS_Stack_Info; - - Limit : System.Address; - begin - -- Get stack bounds from VxWorks. - Get_Stack_Info (Stack_Info'Access); - - if Stack_Grows_Down then - Limit := Stack_Info.Base - Storage_Offset (Stack_Info.Size); - else - Limit := Stack_Info.Base + Storage_Offset (Stack_Info.Size); - end if; - - -- Note: taskVarAdd implicitly calls taskVarInit if required. - if Task_Var_Add (0, Stack_Limit'Address) = 0 then - Stack_Limit := Limit; - end if; - end Set_Stack_Limit_For_Current_Task; - -end System.Stack_Checking.Operations; |