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* [gcc r12-4293] [Ada] RTEMS: use default stack checking emulation package
@ 2021-10-11 13:39 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2021-10-11 13:39 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:5a6c36ae14d91046a866b2ff31c0aab77c3c42f8
commit r12-4293-g5a6c36ae14d91046a866b2ff31c0aab77c3c42f8
Author: Patrick Bernardi <bernardi@adacore.com>
Date: Tue Sep 28 14:00:09 2021 -0400
[Ada] RTEMS: use default stack checking emulation package
gcc/ada/
* Makefile.rtl (RTEMS): Add s-stchop.o to
EXTRA_GNATRTL_NONTASKING_OBJS, remove s-stchop__rtems.adb.
* libgnat/s-stchop__rtems.adb: Removed.
Diff:
---
gcc/ada/Makefile.rtl | 3 +-
gcc/ada/libgnat/s-stchop__rtems.adb | 113 ------------------------------------
2 files changed, 2 insertions(+), 114 deletions(-)
diff --git a/gcc/ada/Makefile.rtl b/gcc/ada/Makefile.rtl
index db21f016f08..75d172518d0 100644
--- a/gcc/ada/Makefile.rtl
+++ b/gcc/ada/Makefile.rtl
@@ -2057,9 +2057,10 @@ ifeq ($(strip $(filter-out rtems%,$(target_os))),)
s-taprop.adb<libgnarl/s-taprop__posix.adb \
s-taspri.ads<libgnarl/s-taspri__posix.ads \
s-tpopsp.adb<libgnarl/s-tpopsp__tls.adb \
- s-stchop.adb<libgnat/s-stchop__rtems.adb \
s-interr.adb<libgnarl/s-interr__hwint.adb
+ EXTRA_GNATRTL_NONTASKING_OBJS += s-stchop.o
+
ifeq ($(strip $(filter-out arm%, $(target_cpu))),)
EH_MECHANISM=-arm
else
diff --git a/gcc/ada/libgnat/s-stchop__rtems.adb b/gcc/ada/libgnat/s-stchop__rtems.adb
deleted file mode 100644
index f273f291460..00000000000
--- a/gcc/ada/libgnat/s-stchop__rtems.adb
+++ /dev/null
@@ -1,113 +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) 1999-2021, 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 RTEMS 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 Interfaces.C; use Interfaces.C;
-
-package body System.Stack_Checking.Operations is
-
- ----------------------------
- -- 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;
-
- -----------------------------
- -- Notify_Stack_Attributes --
- -----------------------------
-
- procedure Notify_Stack_Attributes
- (Initial_SP : System.Address;
- Size : System.Storage_Elements.Storage_Offset)
- is
-
- -- RTEMS keeps all the information we need.
-
- pragma Unreferenced (Size);
- pragma Unreferenced (Initial_SP);
-
- begin
- null;
- end Notify_Stack_Attributes;
-
- -----------------
- -- Stack_Check --
- -----------------
-
- function Stack_Check
- (Stack_Address : System.Address) return Stack_Access
- is
- pragma Unreferenced (Stack_Address);
-
- -- RTEMS has a routine to check if the stack is blown.
- -- It returns a C99 bool.
- function rtems_stack_checker_is_blown return Interfaces.C.unsigned_char;
- pragma Import (C,
- rtems_stack_checker_is_blown, "rtems_stack_checker_is_blown");
-
- begin
- -- RTEMS has a routine to check this. So use it.
-
- if rtems_stack_checker_is_blown /= 0 then
- Ada.Exceptions.Raise_Exception
- (E => Storage_Error'Identity,
- Message => "stack overflow detected");
- end if;
-
- return null;
-
- 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;
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