From b9de1157289455b0ca26daff519d4a0ddcd1fa13 Mon Sep 17 00:00:00 2001 From: Dan Albert Date: Wed, 24 Feb 2016 13:48:45 -0800 Subject: Update 4.8.1 to 4.8.3. My previous drop was the wrong version. The platform mingw is currently using 4.8.3, not 4.8.1 (not sure how I got that wrong). From ftp://ftp.gnu.org/gnu/gcc/gcc-4.8.3/gcc-4.8.3.tar.bz2. Bug: http://b/26523949 Change-Id: Id85f1bdcbbaf78c7d0b5a69e74c798a08f341c35 --- gcc-4.8.3/gcc/ada/s-parame.ads | 213 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 gcc-4.8.3/gcc/ada/s-parame.ads (limited to 'gcc-4.8.3/gcc/ada/s-parame.ads') diff --git a/gcc-4.8.3/gcc/ada/s-parame.ads b/gcc-4.8.3/gcc/ada/s-parame.ads new file mode 100644 index 000000000..e4317fafc --- /dev/null +++ b/gcc-4.8.3/gcc/ada/s-parame.ads @@ -0,0 +1,213 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- S Y S T E M . P A R A M E T E R S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2011, 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 -- +-- . -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- Default version used when no target-specific version is provided + +-- This package defines some system dependent parameters for GNAT. These +-- are values that are referenced by the runtime library and are therefore +-- relevant to the target machine. + +-- The parameters whose value is defined in the spec are not generally +-- expected to be changed. If they are changed, it will be necessary to +-- recompile the run-time library. + +-- The parameters which are defined by functions can be changed by modifying +-- the body of System.Parameters in file s-parame.adb. A change to this body +-- requires only rebinding and relinking of the application. + +-- Note: do not introduce any pragma Inline statements into this unit, since +-- otherwise the relinking and rebinding capability would be deactivated. + +pragma Compiler_Unit; + +package System.Parameters is + pragma Pure; + + --------------------------------------- + -- Task And Stack Allocation Control -- + --------------------------------------- + + type Task_Storage_Size is new Integer; + -- Type used in tasking units for task storage size + + type Size_Type is new Task_Storage_Size; + -- Type used to provide task storage size to runtime + + Unspecified_Size : constant Size_Type := Size_Type'First; + -- Value used to indicate that no size type is set + + subtype Percentage is Size_Type range -1 .. 100; + Dynamic : constant Size_Type := -1; + -- The secondary stack ratio is a constant between 0 and 100 which + -- determines the percentage of the allocated task stack that is + -- used by the secondary stack (the rest being the primary stack). + -- The special value of minus one indicates that the secondary + -- stack is to be allocated from the heap instead. + + Sec_Stack_Percentage : constant Percentage := Dynamic; + -- This constant defines the handling of the secondary stack + + Sec_Stack_Dynamic : constant Boolean := Sec_Stack_Percentage = Dynamic; + -- Convenient Boolean for testing for dynamic secondary stack + + function Default_Stack_Size return Size_Type; + -- Default task stack size used if none is specified + + function Minimum_Stack_Size return Size_Type; + -- Minimum task stack size permitted + + function Adjust_Storage_Size (Size : Size_Type) return Size_Type; + -- Given the storage size stored in the TCB, return the Storage_Size + -- value required by the RM for the Storage_Size attribute. The + -- required adjustment is as follows: + -- + -- when Size = Unspecified_Size, return Default_Stack_Size + -- when Size < Minimum_Stack_Size, return Minimum_Stack_Size + -- otherwise return given Size + + Default_Env_Stack_Size : constant Size_Type := 8_192_000; + -- Assumed size of the environment task, if no other information + -- is available. This value is used when stack checking is + -- enabled and no GNAT_STACK_LIMIT environment variable is set. + + Stack_Grows_Down : constant Boolean := True; + -- This constant indicates whether the stack grows up (False) or + -- down (True) in memory as functions are called. It is used for + -- proper implementation of the stack overflow check. + + ---------------------------------------------- + -- Characteristics of types in Interfaces.C -- + ---------------------------------------------- + + long_bits : constant := Long_Integer'Size; + -- Number of bits in type long and unsigned_long. The normal convention + -- is that this is the same as type Long_Integer, but this is not true + -- of all targets. For example, in OpenVMS long /= Long_Integer. + + ptr_bits : constant := Standard'Address_Size; + subtype C_Address is System.Address; + -- Number of bits in Interfaces.C pointers, normally a standard address, + -- except on 64-bit VMS where they are 32-bit addresses, for compatibility + -- with legacy code. + + C_Malloc_Linkname : constant String := "__gnat_malloc"; + -- Name of runtime function used to allocate such a pointer + + ---------------------------------------------- + -- Behavior of Pragma Finalize_Storage_Only -- + ---------------------------------------------- + + -- Garbage_Collected is a Boolean constant whose value indicates the + -- effect of the pragma Finalize_Storage_Entry on a controlled type. + + -- Garbage_Collected = False + + -- The system releases all storage on program termination only, + -- but not other garbage collection occurs, so finalization calls + -- are omitted only for outer level objects can be omitted if + -- pragma Finalize_Storage_Only is used. + + -- Garbage_Collected = True + + -- The system provides full garbage collection, so it is never + -- necessary to release storage for controlled objects for which + -- a pragma Finalize_Storage_Only is used. + + Garbage_Collected : constant Boolean := False; + -- The storage mode for this system (release on program exit) + + --------------------- + -- Tasking Profile -- + --------------------- + + -- In the following sections, constant parameters are defined to + -- allow some optimizations and fine tuning within the tasking run time + -- based on restrictions on the tasking features. + + ---------------------- + -- Locking Strategy -- + ---------------------- + + Single_Lock : constant Boolean := False; + -- Indicates whether a single lock should be used within the tasking + -- run-time to protect internal structures. If True, a single lock + -- will be used, meaning less locking/unlocking operations, but also + -- more global contention. In general, Single_Lock should be set to + -- True on single processor machines, and to False to multi-processor + -- systems, but this can vary from application to application and also + -- depends on the scheduling policy. + + ------------------- + -- Task Abortion -- + ------------------- + + No_Abort : constant Boolean := False; + -- This constant indicates whether abort statements and asynchronous + -- transfer of control (ATC) are disallowed. If set to True, it is + -- assumed that neither construct is used, and the run time does not + -- need to defer/undefer abort and check for pending actions at + -- completion points. A value of True for No_Abort corresponds to: + -- pragma Restrictions (No_Abort_Statements); + -- pragma Restrictions (Max_Asynchronous_Select_Nesting => 0); + + --------------------- + -- Task Attributes -- + --------------------- + + Default_Attribute_Count : constant := 4; + -- Number of pre-allocated Address-sized task attributes stored in the + -- task control block. + + -------------------- + -- Runtime Traces -- + -------------------- + + Runtime_Traces : constant Boolean := False; + -- This constant indicates whether the runtime outputs traces to a + -- predefined output or not (True means that traces are output). + -- See System.Traces for more details. + + ----------------------- + -- Task Image Length -- + ----------------------- + + Max_Task_Image_Length : constant := 256; + -- This constant specifies the maximum length of a task's image + + ------------------------------ + -- Exception Message Length -- + ------------------------------ + + Default_Exception_Msg_Max_Length : constant := 200; + -- This constant specifies the default number of characters to allow + -- in an exception message (200 is minimum required by RM 11.4.1(18)). + +end System.Parameters; -- cgit v1.2.3