1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
8 -- (VxWorks Version Sparc/64) --
10 -- Copyright (C) 1992-2015, 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 3, 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. --
23 -- As a special exception under Section 7 of GPL version 3, you are granted --
24 -- additional permissions described in the GCC Runtime Library Exception, --
25 -- version 3.1, as published by the Free Software Foundation. --
27 -- You should have received a copy of the GNU General Public License and --
28 -- a copy of the GCC Runtime Library Exception along with this program; --
29 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
30 -- <http://www.gnu.org/licenses/>. --
32 -- GNAT was originally developed by the GNAT team at New York University. --
33 -- Extensive contributions were provided by Ada Core Technologies Inc. --
35 ------------------------------------------------------------------------------
39 -- Note that we take advantage of the implementation permission to make
40 -- this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada
41 -- 2005, this is Pure in any case (AI-362).
43 pragma No_Elaboration_Code_All
;
44 -- Allow the use of that restriction in units that WITH this unit
46 type Name
is (SYSTEM_NAME_GNAT
);
47 System_Name
: constant Name
:= SYSTEM_NAME_GNAT
;
49 -- System-Dependent Named Numbers
51 Min_Int
: constant := Long_Long_Integer'First;
52 Max_Int
: constant := Long_Long_Integer'Last;
54 Max_Binary_Modulus
: constant := 2 ** Long_Long_Integer'Size;
55 Max_Nonbinary_Modulus
: constant := 2 ** Integer'Size - 1;
57 Max_Base_Digits
: constant := Long_Long_Float'Digits;
58 Max_Digits
: constant := Long_Long_Float'Digits;
60 Max_Mantissa
: constant := 63;
61 Fine_Delta
: constant := 2.0 ** (-Max_Mantissa
);
63 Tick
: constant := 1.0 / 60.0;
65 -- Storage-related Declarations
67 -- VxWorks for UltraSparc uses 64bit words but 32bit pointers
69 type Address
is private;
70 pragma Preelaborable_Initialization
(Address
);
71 Null_Address
: constant Address
;
73 Storage_Unit
: constant := 8;
74 Word_Size
: constant := 64;
75 Memory_Size
: constant := 2 ** 32;
79 function "<" (Left
, Right
: Address
) return Boolean;
80 function "<=" (Left
, Right
: Address
) return Boolean;
81 function ">" (Left
, Right
: Address
) return Boolean;
82 function ">=" (Left
, Right
: Address
) return Boolean;
83 function "=" (Left
, Right
: Address
) return Boolean;
85 pragma Import
(Intrinsic
, "<");
86 pragma Import
(Intrinsic
, "<=");
87 pragma Import
(Intrinsic
, ">");
88 pragma Import
(Intrinsic
, ">=");
89 pragma Import
(Intrinsic
, "=");
91 -- Other System-Dependent Declarations
93 type Bit_Order
is (High_Order_First
, Low_Order_First
);
94 Default_Bit_Order
: constant Bit_Order
:= High_Order_First
;
95 pragma Warnings
(Off
, Default_Bit_Order
); -- kill constant condition warning
97 -- Priority-related Declarations (RM D.1)
99 -- Ada priorities are mapped to VxWorks priorities using the following
100 -- transformation: 255 - Ada Priority
102 -- Ada priorities are used as follows:
104 -- 256 is reserved for the VxWorks kernel
105 -- 248 - 255 correspond to hardware interrupt levels 0 .. 7
106 -- 247 is a catchall default "interrupt" priority for signals,
107 -- allowing higher priority than normal tasks, but lower than
108 -- hardware priority levels. Protected Object ceilings can
109 -- override these values.
110 -- 246 is used by the Interrupt_Manager task
112 Max_Priority
: constant Positive := 245;
113 Max_Interrupt_Priority
: constant Positive := 255;
115 subtype Any_Priority
is Integer range 0 .. 255;
116 subtype Priority
is Any_Priority
range 0 .. 245;
117 subtype Interrupt_Priority
is Any_Priority
range 246 .. 255;
119 Default_Priority
: constant Priority
:= 122;
123 type Address
is mod Memory_Size
;
124 Null_Address
: constant Address
:= 0;
126 --------------------------------------
127 -- System Implementation Parameters --
128 --------------------------------------
130 -- These parameters provide information about the target that is used
131 -- by the compiler. They are in the private part of System, where they
132 -- can be accessed using the special circuitry in the Targparm unit
133 -- whose source should be consulted for more detailed descriptions
134 -- of the individual switch values.
136 Backend_Divide_Checks
: constant Boolean := False;
137 Backend_Overflow_Checks
: constant Boolean := True;
138 Command_Line_Args
: constant Boolean := False;
139 Configurable_Run_Time
: constant Boolean := False;
140 Denorm
: constant Boolean := True;
141 Duration_32_Bits
: constant Boolean := False;
142 Exit_Status_Supported
: constant Boolean := True;
143 Fractional_Fixed_Ops
: constant Boolean := False;
144 Frontend_Layout
: constant Boolean := False;
145 Machine_Overflows
: constant Boolean := False;
146 Machine_Rounds
: constant Boolean := True;
147 Preallocated_Stacks
: constant Boolean := False;
148 Signed_Zeros
: constant Boolean := True;
149 Stack_Check_Default
: constant Boolean := False;
150 Stack_Check_Probes
: constant Boolean := False;
151 Stack_Check_Limits
: constant Boolean := True;
152 Support_Aggregates
: constant Boolean := True;
153 Support_Composite_Assign
: constant Boolean := True;
154 Support_Composite_Compare
: constant Boolean := True;
155 Support_Long_Shifts
: constant Boolean := True;
156 Always_Compatible_Rep
: constant Boolean := False;
157 Suppress_Standard_Library
: constant Boolean := False;
158 Use_Ada_Main_Program_Name
: constant Boolean := True;
159 Frontend_Exceptions
: constant Boolean := True;
160 ZCX_By_Default
: constant Boolean := False;