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* common/s-retsta.ads: new, added from GCC 13.0.1 (20230129). This is
required by GCC 13, but does no harm for earlier releases (tested
against GCC 11, 12).- Loading branch information
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| ------------------------------------------------------------------------------ | ||
| -- -- | ||
| -- GNAT COMPILER COMPONENTS -- | ||
| -- -- | ||
| -- S Y S T E M . R E T U R N _ S T A C K -- | ||
| -- -- | ||
| -- S p e c -- | ||
| -- -- | ||
| -- Copyright (C) 2022-2023, 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. -- | ||
| -- -- | ||
| ------------------------------------------------------------------------------ | ||
|
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| -- This small package provides direct access to the return stack of the code | ||
| -- generator for functions returning a by-reference type. This return stack | ||
| -- is the portion of the primary stack that has been allocated by callers of | ||
| -- the functions and onto which the functions put the result before returning. | ||
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| with System.Storage_Elements; | ||
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| package System.Return_Stack is | ||
| pragma Preelaborate; | ||
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| package SSE renames System.Storage_Elements; | ||
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| procedure RS_Allocate | ||
| (Addr : out Address; | ||
| Storage_Size : SSE.Storage_Count); | ||
| pragma Import (Intrinsic, RS_Allocate, "__builtin_return_slot"); | ||
| -- Allocate enough space on the return stack of the invoking task to | ||
| -- accommodate a return of size Storage_Size. Return the address of the | ||
| -- first byte of the allocation in Addr. | ||
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| private | ||
| RS_Pool : Integer; | ||
| -- Unused entity that is just present to ease the sharing of the pool | ||
| -- mechanism for specific allocation/deallocation in the compiler. | ||
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| end System.Return_Stack; |