1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
8 -- (GNU-Linux/PPC Version) --
10 -- Copyright (C) 1992-2005 Free Software Foundation, Inc. --
12 -- This specification is derived from the Ada Reference Manual for use with --
13 -- GNAT. The copyright notice above, and the license provisions that follow --
14 -- apply solely to the contents of the part following the private keyword. --
16 -- GNAT is free software; you can redistribute it and/or modify it under --
17 -- terms of the GNU General Public License as published by the Free Soft- --
18 -- ware Foundation; either version 2, or (at your option) any later ver- --
19 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
20 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
21 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
22 -- for more details. You should have received a copy of the GNU General --
23 -- Public License distributed with GNAT; see file COPYING. If not, write --
24 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
25 -- Boston, MA 02110-1301, USA. --
27 -- As a special exception, if other files instantiate generics from this --
28 -- unit, or you link this unit with other files to produce an executable, --
29 -- this unit does not by itself cause the resulting executable to be --
30 -- covered by the GNU General Public License. This exception does not --
31 -- however invalidate any other reasons why the executable file might be --
32 -- covered by the GNU Public License. --
34 -- GNAT was originally developed by the GNAT team at New York University. --
35 -- Extensive contributions were provided by Ada Core Technologies Inc. --
37 ------------------------------------------------------------------------------
41 -- Note that we take advantage of the implementation permission to make this
42 -- unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada 2005, this is
43 -- Pure in any case (AI-362).
45 type Name
is (SYSTEM_NAME_GNAT
);
46 System_Name
: constant Name
:= SYSTEM_NAME_GNAT
;
48 -- System-Dependent Named Numbers
50 Min_Int
: constant := Long_Long_Integer'First;
51 Max_Int
: constant := Long_Long_Integer'Last;
53 Max_Binary_Modulus
: constant := 2 ** Long_Long_Integer'Size;
54 Max_Nonbinary_Modulus
: constant := Integer'Last;
56 Max_Base_Digits
: constant := Long_Long_Float'Digits;
57 Max_Digits
: constant := Long_Long_Float'Digits;
59 Max_Mantissa
: constant := 63;
60 Fine_Delta
: constant := 2.0 ** (-Max_Mantissa
);
62 Tick
: constant := 0.000_001
;
64 -- Storage-related Declarations
66 type Address
is private;
67 Null_Address
: constant Address
;
69 Storage_Unit
: constant := 8;
70 Word_Size
: constant := 32;
71 Memory_Size
: constant := 2 ** 32;
75 function "<" (Left
, Right
: Address
) return Boolean;
76 function "<=" (Left
, Right
: Address
) return Boolean;
77 function ">" (Left
, Right
: Address
) return Boolean;
78 function ">=" (Left
, Right
: Address
) return Boolean;
79 function "=" (Left
, Right
: Address
) return Boolean;
81 pragma Import
(Intrinsic
, "<");
82 pragma Import
(Intrinsic
, "<=");
83 pragma Import
(Intrinsic
, ">");
84 pragma Import
(Intrinsic
, ">=");
85 pragma Import
(Intrinsic
, "=");
87 -- Other System-Dependent Declarations
89 type Bit_Order
is (High_Order_First
, Low_Order_First
);
90 Default_Bit_Order
: constant Bit_Order
:= High_Order_First
;
92 -- Priority-related Declarations (RM D.1)
94 Max_Priority
: constant Positive := 30;
95 Max_Interrupt_Priority
: constant Positive := 31;
97 subtype Any_Priority
is Integer range 0 .. 31;
98 subtype Priority
is Any_Priority
range 0 .. 30;
99 subtype Interrupt_Priority
is Any_Priority
range 31 .. 31;
101 Default_Priority
: constant Priority
:= 15;
105 type Address
is mod Memory_Size
;
106 Null_Address
: constant Address
:= 0;
108 --------------------------------------
109 -- System Implementation Parameters --
110 --------------------------------------
112 -- These parameters provide information about the target that is used
113 -- by the compiler. They are in the private part of System, where they
114 -- can be accessed using the special circuitry in the Targparm unit
115 -- whose source should be consulted for more detailed descriptions
116 -- of the individual switch values.
118 AAMP
: constant Boolean := False;
119 Backend_Divide_Checks
: constant Boolean := False;
120 Backend_Overflow_Checks
: constant Boolean := False;
121 Command_Line_Args
: constant Boolean := True;
122 Compiler_System_Version
: constant Boolean := False;
123 Configurable_Run_Time
: constant Boolean := False;
124 Denorm
: constant Boolean := True;
125 Duration_32_Bits
: constant Boolean := False;
126 Exit_Status_Supported
: constant Boolean := True;
127 Fractional_Fixed_Ops
: constant Boolean := False;
128 Frontend_Layout
: constant Boolean := False;
129 Functions_Return_By_DSP
: constant Boolean := False;
130 Machine_Overflows
: constant Boolean := False;
131 Machine_Rounds
: constant Boolean := True;
132 OpenVMS
: constant Boolean := False;
133 Preallocated_Stacks
: constant Boolean := False;
134 Signed_Zeros
: constant Boolean := True;
135 Stack_Check_Default
: constant Boolean := False;
136 Stack_Check_Probes
: constant Boolean := False;
137 Support_64_Bit_Divides
: constant Boolean := True;
138 Support_Aggregates
: constant Boolean := True;
139 Support_Composite_Assign
: constant Boolean := True;
140 Support_Composite_Compare
: constant Boolean := True;
141 Support_Long_Shifts
: constant Boolean := True;
142 Suppress_Standard_Library
: constant Boolean := False;
143 Use_Ada_Main_Program_Name
: constant Boolean := False;
144 ZCX_By_Default
: constant Boolean := True;
145 GCC_ZCX_Support
: constant Boolean := True;
146 Front_End_ZCX_Support
: constant Boolean := False;
148 -- Obsolete entries, to be removed eventually (bootstrap issues!)
150 High_Integrity_Mode
: constant Boolean := False;
151 Long_Shifts_Inlined
: constant Boolean := True;