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authorcharlet <charlet@138bc75d-0d04-0410-961f-82ee72b054a4>2004-05-14 10:02:00 +0000
committercharlet <charlet@138bc75d-0d04-0410-961f-82ee72b054a4>2004-05-14 10:02:00 +0000
commit3e55413dd9a577b7b270e04f09ccb3f13a90a3cb (patch)
treead67eadab2c2032169ff2f33eb289b29a4e7e3a9 /gcc/ada/s-stchop-vxworks.adb
parent7e0c7e2e8e2c055a2751d8dbd5cdd4bd70fe316e (diff)
downloadgcc-3e55413dd9a577b7b270e04f09ccb3f13a90a3cb.tar.gz
Renaming of target specific files for clarity
* Makefile.in: Rename GNAT target specific files. * 31soccon.ads, 31soliop.ads 35soccon.ads, 3asoccon.ads, 3bsoccon.ads, 3gsoccon.ads, 3hsoccon.ads, 3psoccon.ads, 3ssoccon.ads, 3ssoliop.ads, 3veacodu.adb, 3vexpect.adb, 3vsoccon.ads, 3vsocthi.adb, 3vsocthi.ads, 3vtrasym.adb, 3wsoccon.ads, 3wsocthi.adb, 3wsocthi.ads, 3wsoliop.ads, 3zsoccon.ads, 3zsocthi.adb, 3zsocthi.ads, 41intnam.ads, 42intnam.ads, 45intnam.ads, 4aintnam.ads, 4cintnam.ads, 4gintnam.ads, 4hexcpol.adb, 4hintnam.ads, 4lintnam.ads, 4nintnam.ads, 4ointnam.ads, 4onumaux.ads, 4pintnam.ads, 4sintnam.ads, 4vcaldel.adb, 4vcalend.adb, 4vcalend.ads, 4vintnam.ads, 4wcalend.adb, 4wexcpol.adb, 4wintnam.ads, 4zintnam.ads, 4znumaux.ads, 4zsytaco.adb, 4zsytaco.ads, 51osinte.adb, 51osinte.ads, 51system.ads, 52osinte.adb, 52osinte.ads, 53osinte.ads, 54osinte.ads, 55osinte.adb, 55osinte.ads, 55system.ads, 56osinte.adb, 56osinte.ads, 56system.ads, 56taprop.adb, 56taspri.ads, 56tpopsp.adb, 57system.ads, 58system.ads, 5amastop.adb, 5aml-tgt.adb, 5aosinte.adb, 5aosinte.ads, 5asystem.ads, 5ataprop.adb, 5atasinf.ads, 5ataspri.ads, 5atpopsp.adb, 5avxwork.ads, 5bml-tgt.adb, 5bosinte.adb, 5bosinte.ads, 5bsystem.ads, 5cosinte.ads, 5csystem.ads, 5dsystem.ads, 5esystem.ads, 5fintman.adb, 5fosinte.adb, 5fosinte.ads, 5fsystem.ads, 5ftaprop.adb, 5ftasinf.ads, 5ginterr.adb, 5gintman.adb, 5gmastop.adb, 5gml-tgt.adb, 5gosinte.ads, 5gproinf.adb, 5gproinf.ads, 5gsystem.ads, 5gtaprop.adb, 5gtasinf.adb, 5gtasinf.ads, 5gtpgetc.adb, 5hml-tgt.adb, 5hosinte.adb, 5hosinte.ads, 5hparame.ads, 5hsystem.ads, 5htaprop.adb, 5htaspri.ads, 5htraceb.adb, 5iosinte.adb, 5iosinte.ads, 5itaprop.adb, 5itaspri.ads, 5ksystem.ads, 5kvxwork.ads, 5lml-tgt.adb, 5losinte.ads, 5lparame.adb, 5lsystem.ads, 5msystem.ads, 5mvxwork.ads, 5ninmaop.adb, 5nintman.adb, 5nosinte.ads, 5nsystem.ads, 5ntaprop.adb, 5ntaspri.ads, 5ointerr.adb, 5omastop.adb, 5oosinte.adb, 5oosinte.ads, 5oosprim.adb, 5oparame.adb, 5osystem.ads, 5otaprop.adb, 5otaspri.ads, 5posinte.ads, 5posprim.adb, 5psystem.ads, 5pvxwork.ads, 5sintman.adb, 5sml-tgt.adb, 5sosinte.adb, 5sosinte.ads, 5sosprim.adb, 5sparame.adb, 5ssystem.ads, 5staprop.adb, 5stasinf.adb, 5stasinf.ads, 5staspri.ads, 5stpopsp.adb, 5svxwork.ads, 5tosinte.ads, 5usystem.ads, 5vasthan.adb, 5vdirval.adb, 5vinmaop.adb, 5vinterr.adb, 5vintman.adb, 5vintman.ads, 5vmastop.adb, 5vml-tgt.adb, 5vosinte.adb, 5vosinte.ads, 5vosprim.adb, 5vosprim.ads, 5vparame.ads, 5vsymbol.adb, 5vsystem.ads, 5vtaprop.adb, 5vtaspri.ads, 5vtpopde.adb, 5vtpopde.ads, 5vtraent.adb, 5vtraent.ads, 5vvaflop.adb, 5wdirval.adb, 5wgloloc.adb, 5wintman.adb, 5wmemory.adb, 5wml-tgt.adb, 5wosinte.ads, 5wosprim.adb, 5wsystem.ads, 5wtaprop.adb, 5wtaspri.ads, 5xparame.ads, 5xsystem.ads, 5xvxwork.ads, 5yparame.ads, 5ysystem.ads, 5zinterr.adb, 5zintman.adb, 5zintman.ads, 5zml-tgt.adb, 5zosinte.adb, 5zosinte.ads, 5zosprim.adb, 5zparame.ads, 5zstchop.adb, 5zsystem.ads, 5ztaprop.adb, 5ztaspri.ads, 5ztfsetr.adb, 5ztpopsp.adb, 6vcpp.adb, 6vcstrea.adb, 6vinterf.ads, 7sinmaop.adb, 7sintman.adb, 7sosinte.adb, 7sosprim.adb, 7staprop.adb, 7staspri.ads, 7stfsetr.adb, 7stpopsp.adb, 7straceb.adb, 7straces.adb, 7strafor.adb, 7strafor.ads, 7stratas.adb, 86numaux.adb, 86numaux.ads: Replaced by files below. * a-caldel-vms.adb, a-calend-mingw.adb, a-calend-vms.adb, a-calend-vms.ads, a-dirval-mingw.adb, a-dirval-vms.adb, a-excpol-abort.adb, a-excpol-interix.adb, a-intnam-aix.ads, a-intnam-dummy.ads, a-intnam-freebsd.ads, a-intnam-hpux.ads, a-intnam-interix.ads, a-intnam-irix.ads, a-intnam-linux.ads, a-intnam-lynxos.ads, a-intnam-mingw.ads, a-intnam-os2.ads, a-intnam-solaris.ads, a-intnam-tru64.ads, a-intnam-unixware.ads, a-intnam-vms.ads, a-intnam-vxworks.ads, a-numaux-libc-x86.ads, a-numaux-vxworks.ads, a-numaux-x86.adb, a-numaux-x86.ads, a-sytaco-vxworks.adb, a-sytaco-vxworks.ads, g-eacodu-vms.adb, g-expect-vms.adb, g-soccon-aix.ads, g-soccon-freebsd.ads, g-soccon-hpux.ads, g-soccon-interix.ads, g-soccon-irix.ads, g-soccon-mingw.ads, g-soccon-solaris.ads, g-soccon-tru64.ads, g-soccon-unixware.ads, g-soccon-vms.adb, g-soccon-vxworks.ads, g-socthi-mingw.adb, g-socthi-mingw.ads, g-socthi-vms.adb, g-socthi-vms.ads, g-socthi-vxworks.adb, g-socthi-vxworks.ads, g-soliop-mingw.ads, g-soliop-solaris.ads, g-soliop-unixware.ads, g-trasym-vms.adb, i-cpp-vms.adb, i-cstrea-vms.adb, interfac-vms.ads, mlib-tgt-aix.adb, mlib-tgt-hpux.adb, mlib-tgt-irix.adb, mlib-tgt-linux.adb, mlib-tgt-mingw.adb, mlib-tgt-solaris.adb, mlib-tgt-tru64.adb, mlib-tgt-vms.adb, mlib-tgt-vxworks.adb, s-asthan-vms.adb, s-gloloc-mingw.adb, s-inmaop-dummy.adb, s-inmaop-posix.adb, s-inmaop-vms.adb, s-interr-dummy.adb, s-interr-sigaction.adb, s-interr-vms.adb, s-interr-vxworks.adb, s-intman-dummy.adb, s-intman-irix.adb, s-intman-irix-athread.adb, s-intman-mingw.adb, s-intman-posix.adb, s-intman-solaris.adb, s-intman-vms.adb, s-intman-vms.ads, s-intman-vxworks.adb, s-intman-vxworks.ads, s-mastop-irix.adb, s-mastop-tru64.adb, s-mastop-vms.adb, s-mastop-x86.adb, s-memory-mingw.adb, s-osinte-aix.adb, s-osinte-aix.ads, s-osinte-aix-fsu.ads, s-osinte-dummy.ads, s-osinte-freebsd.adb, s-osinte-freebsd.ads, s-osinte-fsu.adb, s-osinte-hpux.ads, s-osinte-hpux-dce.adb, s-osinte-hpux-dce.ads, s-osinte-interix.ads, s-osinte-irix.adb, s-osinte-irix.ads, s-osinte-irix-athread.ads, s-osinte-linux.ads, s-osinte-linux-fsu.ads, s-osinte-linux-ia64.ads, s-osinte-lynxos-3.adb, s-osinte-lynxos-3.ads, s-osinte-lynxos.adb, s-osinte-lynxos.ads, s-osinte-mingw.ads, s-osinte-os2.adb, s-osinte-os2.ads, s-osinte-posix.adb, s-osinte-solaris.adb, s-osinte-solaris.ads, s-osinte-solaris-fsu.ads, s-osinte-solaris-posix.ads, s-osinte-tru64.adb, s-osinte-tru64.ads, s-osinte-unixware.adb, s-osinte-unixware.ads, s-osinte-vms.adb, s-osinte-vms.ads, s-osinte-vxworks.adb, s-osinte-vxworks.ads, s-osprim-mingw.adb, s-osprim-os2.adb, s-osprim-posix.adb, s-osprim-solaris.adb, s-osprim-unix.adb, s-osprim-vms.adb, s-osprim-vms.ads, s-osprim-vxworks.adb, s-parame-ae653.ads, s-parame-hpux.ads, s-parame-linux.adb, s-parame-os2.adb, s-parame-solaris.adb, s-parame-vms.ads, s-parame-vms-restrict.ads, s-parame-vxworks.ads, s-proinf-irix-athread.adb, s-proinf-irix-athread.ads, s-stchop-vxworks.adb, s-taprop-dummy.adb, s-taprop-hpux-dce.adb, s-taprop-irix.adb, s-taprop-irix-athread.adb, s-taprop-linux.adb, s-taprop-lynxos.adb, s-taprop-mingw.adb, s-taprop-os2.adb, s-taprop-posix.adb, s-taprop-solaris.adb, s-taprop-tru64.adb, s-taprop-vms.adb, s-taprop-vxworks.adb, s-tasinf-irix.ads, s-tasinf-irix-athread.adb, s-tasinf-irix-athread.ads, s-tasinf-solaris.adb, s-tasinf-solaris.ads, s-tasinf-tru64.ads, s-taspri-dummy.ads, s-taspri-hpux-dce.ads, s-taspri-linux.ads, s-taspri-lynxos.ads, s-taspri-mingw.ads, s-taspri-os2.ads, s-taspri-posix.ads, s-taspri-solaris.ads, s-taspri-tru64.ads, s-taspri-vms.ads, s-taspri-vxworks.ads, s-tfsetr-default.adb, s-tfsetr-vxworks.adb, s-tpopde-vms.adb, s-tpopde-vms.ads, s-tpopsp-lynxos.adb, s-tpopsp-posix.adb, s-tpopsp-posix-foreign.adb, s-tpopsp-solaris.adb, s-tpopsp-vxworks.adb, s-traceb-hpux.adb, s-traceb-mastop.adb, s-traces-default.adb, s-traent-vms.adb, s-traent-vms.ads, s-trafor-default.adb, s-trafor-default.ads, s-tratas-default.adb, s-vaflop-vms.adb, s-vxwork-alpha.ads, s-vxwork-m68k.ads, s-vxwork-mips.ads, s-vxwork-ppc.ads, s-vxwork-sparcv9.ads, s-vxwork-xscale.ads, symbols-vms.adb, system-aix.ads, system-freebsd-x86.ads, system-hpux.ads, system-interix.ads, system-irix-n32.ads, system-irix-o32.ads, system-linux-x86_64.ads, system-linux-x86.ads, system-lynxos-ppc.ads, system-lynxos-x86.ads, system-mingw.ads, system-os2.ads, system-solaris-sparc.ads, system-solaris-sparcv9.ads, system-solaris-x86.ads, system-tru64.ads, system-unixware.ads, system-vms.ads, system-vms-zcx.ads, system-vxworks-alpha.ads, system-vxworks-m68k.ads, system-vxworks-mips.ads, system-vxworks-ppc.ads, system-vxworks-sparcv9.ads, system-vxworks-xscale.ads: Replace files above. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@81834 138bc75d-0d04-0410-961f-82ee72b054a4
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+------------------------------------------------------------------------------
+-- --
+-- GNU ADA 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) 1999-2004 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 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 Ada.Exceptions;
+
+with System.Storage_Elements; use System.Storage_Elements;
+with System.Parameters; use System.Parameters;
+with System.Soft_Links;
+with Interfaces.C;
+with System.OS_Interface;
+
+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.
+
+ function Set_Stack_Info (Stack : access Stack_Access) return Stack_Access;
+
+ -- The function Set_Stack_Info is the actual function that updates
+ -- the cache containing a pointer to the Stack_Info. It may also
+ -- be used for detecting asynchronous abort in combination with
+ -- Invalidate_Self_Cache.
+
+ -- Set_Stack_Info should do the following things in order:
+ -- 1) Get the Stack_Access value for the current task
+ -- 2) Set Stack.all to the value obtained in 1)
+ -- 3) Optionally Poll to check for asynchronous abort
+
+ -- This order is important because if at any time a write to
+ -- the stack cache is pending, that write should be followed
+ -- by a Poll to prevent loosing signals.
+
+ -- Note: This function must be compiled with Polling turned off
+
+ -- Note: on systems like VxWorks and OS/2 with real thread-local storage,
+ -- Set_Stack_Info should return an access value for such local
+ -- storage. In those cases the cache will always be up-to-date.
+
+ -- The following constants should be imported from some system-specific
+ -- constants package. The constants must be static for performance reasons.
+
+ ----------------------------
+ -- Invalidate_Stack_Cache --
+ ----------------------------
+
+ procedure Invalidate_Stack_Cache (Any_Stack : Stack_Access) is
+ pragma Warnings (Off, Any_Stack);
+ begin
+ Cache := Null_Stack;
+ end Invalidate_Stack_Cache;
+
+ --------------------
+ -- Set_Stack_Info --
+ --------------------
+
+ function Set_Stack_Info
+ (Stack : access Stack_Access) return Stack_Access
+ is
+
+ -- Task descriptor that is handled internally by the VxWorks kernel
+ type Task_Descriptor is record
+ T_Id : Interfaces.C.int; -- task identifier
+ Td_Name : System.Address; -- task name
+ Td_Priority : Interfaces.C.int; -- task priority
+ Td_Status : Interfaces.C.int; -- task status
+ Td_Options : Interfaces.C.int; -- task option bits (see below)
+ Td_Entry : System.Address; -- original entry point of task
+ Td_Sp : System.Address; -- saved stack pointer
+ Td_PStackBase : System.Address; -- the bottom of the stack
+ Td_PStackLimit : System.Address; -- the effective end of the stack
+ Td_PStackEnd : System.Address; -- the actual end of the stack
+ Td_StackSize : Interfaces.C.int; -- size of stack in bytes
+ Td_StackCurrent : Interfaces.C.int; -- current stack usage in bytes
+ Td_StackHigh : Interfaces.C.int; -- maximum stack usage in bytes
+ Td_StackMargin : Interfaces.C.int; -- current stack margin in bytes
+ Td_ErrorStatus : Interfaces.C.int; -- most recent task error status
+ Td_Delay : Interfaces.C.int; -- delay/timeout ticks
+ end record;
+
+ -- This VxWorks procedure fills in a specified task descriptor
+ -- for a specified task.
+ procedure TaskInfoGet (T_Id : System.OS_Interface.t_id;
+ Task_Desc : access Task_Descriptor);
+ pragma Import (C, TaskInfoGet, "taskInfoGet");
+
+ My_Stack : Stack_Access;
+ Task_Desc : aliased Task_Descriptor;
+
+ begin
+ -- The order of steps 1 .. 3 is important, see specification.
+
+ -- 1) Get the Stack_Access value for the current task
+
+ My_Stack := Soft_Links.Get_Stack_Info.all;
+
+ if My_Stack.Base = Null_Address then
+
+ -- First invocation. Ask the VxWorks kernel about stack
+ -- values.
+ TaskInfoGet (System.OS_Interface.taskIdSelf, Task_Desc'Access);
+
+ My_Stack.Size := System.Storage_Elements.Storage_Offset
+ (Task_Desc.Td_StackSize);
+ My_Stack.Base := Task_Desc.Td_PStackBase;
+ My_Stack.Limit := Task_Desc.Td_PStackLimit;
+
+ end if;
+
+ -- 2) Set Stack.all to the value obtained in 1)
+
+ Stack.all := My_Stack;
+
+ -- 3) Optionally Poll to check for asynchronous abort
+
+ if Soft_Links.Check_Abort_Status.all /= 0 then
+ raise Standard'Abort_Signal;
+ end if;
+
+ return My_Stack; -- Never trust the cached value, but return local copy!
+ end Set_Stack_Info;
+
+ --------------------
+ -- Set_Stack_Size --
+ --------------------
+
+ -- Specify the stack size for the current frame.
+
+ procedure Set_Stack_Size
+ (Stack_Size : System.Storage_Elements.Storage_Offset)
+ is
+ My_Stack : Stack_Access;
+ Frame_Address : constant System.Address := My_Stack'Address;
+
+ begin
+ My_Stack := Stack_Check (Frame_Address);
+
+ if Stack_Grows_Down then
+ My_Stack.Limit := My_Stack.Base - Stack_Size;
+ else
+ My_Stack.Limit := My_Stack.Base + Stack_Size;
+ end if;
+ end Set_Stack_Size;
+
+ -----------------
+ -- Stack_Check --
+ -----------------
+
+ function Stack_Check
+ (Stack_Address : System.Address) return Stack_Access
+ is
+ type Frame_Marker is null record;
+ Marker : Frame_Marker;
+ Cached_Stack : constant Stack_Access := Cache;
+ Frame_Address : constant System.Address := Marker'Address;
+
+ begin
+ -- This function first does a "cheap" check which is correct
+ -- if it succeeds. In case of failure, the full check is done.
+ -- Ideally the cheap check should be done in an optimized manner,
+ -- or be inlined.
+
+ if (Stack_Grows_Down and then
+ (Frame_Address <= Cached_Stack.Base
+ and
+ Stack_Address > Cached_Stack.Limit))
+ or else
+ (not Stack_Grows_Down and then
+ (Frame_Address >= Cached_Stack.Base
+ and
+ Stack_Address < Cached_Stack.Limit))
+ then
+ -- Cached_Stack is valid as it passed the stack check
+ return Cached_Stack;
+ end if;
+
+ Full_Check :
+ declare
+ My_Stack : constant Stack_Access := Set_Stack_Info (Cache'Access);
+ -- At this point Stack.all might already be invalid, so
+ -- it is essential to use our local copy of Stack!
+
+ begin
+ if (Stack_Grows_Down and then
+ Stack_Address < My_Stack.Limit)
+ or else
+ (not Stack_Grows_Down and then
+ Stack_Address > My_Stack.Limit)
+ then
+ Ada.Exceptions.Raise_Exception
+ (E => Storage_Error'Identity,
+ Message => "stack overflow detected");
+ end if;
+
+ return My_Stack;
+ end Full_Check;
+ end Stack_Check;
+
+ ------------------------
+ -- Update_Stack_Cache --
+ ------------------------
+
+ procedure Update_Stack_Cache (Stack : Stack_Access) is
+ begin
+ if not Multi_Processor then
+ Cache := Stack;
+ end if;
+ end Update_Stack_Cache;
+
+end System.Stack_Checking.Operations;