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verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
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1 files changed, 119 insertions, 0 deletions

diff --git a/gcc/ada/s-secsta.ads b/gcc/ada/s-secsta.ads
new file mode 100644
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--               S Y S T E M . S E C O N D A R Y _ S T A C K                --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2009, 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.                                     --
+--                                                                          --
+-- 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/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+pragma Compiler_Unit;
+
+with System.Storage_Elements;
+
+package System.Secondary_Stack is
+
+   package SSE renames System.Storage_Elements;
+
+   Default_Secondary_Stack_Size : Natural := 10 * 1024;
+   --  Default size of a secondary stack. May be modified by binder -D switch
+   --  which causes the binder to generate an appropriate assignment in the
+   --  binder generated file.
+
+   procedure SS_Init
+     (Stk  : in out Address;
+      Size : Natural := Default_Secondary_Stack_Size);
+   --  Initialize the secondary stack with a main stack of the given Size.
+   --
+   --  If System.Parameters.Sec_Stack_Ratio equals Dynamic, Stk is really an
+   --  OUT parameter that will be allocated on the heap. Then all further
+   --  allocations which do not overflow the main stack will not generate
+   --  dynamic (de)allocation calls. If the main Stack overflows, a new
+   --  chuck of at least the same size will be allocated and linked to the
+   --  previous chunk.
+   --
+   --  Otherwise (Sec_Stack_Ratio between 0 and 100), Stk is an IN parameter
+   --  that is already pointing to a Stack_Id. The secondary stack in this case
+   --  is fixed, and any attempt to allocate more than the initial size will
+   --  result in a Storage_Error being raised.
+   --
+   --  Note: the reason that Stk is passed is that SS_Init is called before
+   --  the proper interface is established to obtain the address of the
+   --  stack using System.Soft_Links.Get_Sec_Stack_Addr.
+
+   procedure SS_Allocate
+     (Addr         : out Address;
+      Storage_Size : SSE.Storage_Count);
+   --  Allocate enough space for a 'Storage_Size' bytes object with Maximum
+   --  alignment. The address of the allocated space is returned in Addr.
+
+   procedure SS_Free (Stk : in out Address);
+   --  Release the memory allocated for the Secondary Stack. That is
+   --  to say, all the allocated chunks. Upon return, Stk will be set
+   --  to System.Null_Address.
+
+   type Mark_Id is private;
+   --  Type used to mark the stack for mark/release processing
+
+   function SS_Mark return Mark_Id;
+   --  Return the Mark corresponding to the current state of the stack
+
+   procedure SS_Release (M : Mark_Id);
+   --  Restore the state of the stack corresponding to the mark M. If an
+   --  additional chunk have been allocated, it will never be freed during a
+   --  ??? missing comment here
+
+   function SS_Get_Max return Long_Long_Integer;
+   --  Return maximum used space in storage units for the current secondary
+   --  stack. For a dynamically allocated secondary stack, the returned
+   --  result is always -1. For a statically allocated secondary stack,
+   --  the returned value shows the largest amount of space allocated so
+   --  far during execution of the program to the current secondary stack,
+   --  i.e. the secondary stack for the current task.
+
+   generic
+      with procedure Put_Line (S : String);
+   procedure SS_Info;
+   --  Debugging procedure used to print out secondary Stack allocation
+   --  information. This procedure is generic in order to avoid a direct
+   --  dependance on a particular IO package.
+
+private
+   SS_Pool : Integer;
+   --  Unused entity that is just present to ease the sharing of the pool
+   --  mechanism for specific allocation/deallocation in the compiler
+
+   type SS_Ptr is new SSE.Integer_Address;
+   --  Stack pointer value for secondary stack
+
+   type Mark_Id is record
+      Sstk : System.Address;
+      Sptr : SS_Ptr;
+   end record;
+   --  A mark value contains the address of the secondary stack structure,
+   --  as returned by System.Soft_Links.Get_Sec_Stack_Addr, and a stack
+   --  pointer value corresponding to the point of the mark call.
+
+end System.Secondary_Stack;