1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
8 -- (VxWorks 7 ARM RTP) --
10 -- Copyright (C) 1992-2018, 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 -- In particular, you can freely distribute your programs built with the --
28 -- GNAT Pro compiler, including any required library run-time units, using --
29 -- any licensing terms of your choosing. See the AdaCore Software License --
30 -- for full details. --
32 -- GNAT was originally developed by the GNAT team at New York University. --
33 -- Extensive contributions were provided by Ada Core Technologies Inc. --
35 ------------------------------------------------------------------------------
37 -- This is the VxWorks version of this package for RTPs
41 -- Note that we take advantage of the implementation permission to make
42 -- this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada
43 -- 2005, this is Pure in any case (AI-362).
45 pragma No_Elaboration_Code_All
;
46 -- Allow the use of that restriction in units that WITH this unit
48 type Name
is (SYSTEM_NAME_GNAT
);
49 System_Name
: constant Name
:= SYSTEM_NAME_GNAT
;
51 -- System-Dependent Named Numbers
53 Min_Int
: constant := Long_Long_Integer'First;
54 Max_Int
: constant := Long_Long_Integer'Last;
56 Max_Binary_Modulus
: constant := 2 ** Long_Long_Integer'Size;
57 Max_Nonbinary_Modulus
: constant := 2 ** Integer'Size - 1;
59 Max_Base_Digits
: constant := Long_Long_Float'Digits;
60 Max_Digits
: constant := Long_Long_Float'Digits;
62 Max_Mantissa
: constant := 63;
63 Fine_Delta
: constant := 2.0 ** (-Max_Mantissa
);
65 Tick
: constant := 1.0 / 60.0;
67 -- Storage-related Declarations
69 type Address
is private;
70 pragma Preelaborable_Initialization
(Address
);
71 Null_Address
: constant Address
;
73 Storage_Unit
: constant := 8;
74 Word_Size
: constant := 32;
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
:= Low_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 pragma Linker_Options
("--specs=vxworks7-rtp-base-link.spec");
124 -- Define the symbol wrs_rtp_base
126 type Address
is mod Memory_Size
;
127 Null_Address
: constant Address
:= 0;
129 --------------------------------------
130 -- System Implementation Parameters --
131 --------------------------------------
133 -- These parameters provide information about the target that is used
134 -- by the compiler. They are in the private part of System, where they
135 -- can be accessed using the special circuitry in the Targparm unit
136 -- whose source should be consulted for more detailed descriptions
137 -- of the individual switch values.
139 Backend_Divide_Checks
: constant Boolean := False;
140 Backend_Overflow_Checks
: constant Boolean := True;
141 Command_Line_Args
: constant Boolean := True;
142 Configurable_Run_Time
: constant Boolean := False;
143 Denorm
: constant Boolean := True;
144 Duration_32_Bits
: constant Boolean := False;
145 Exit_Status_Supported
: constant Boolean := True;
146 Fractional_Fixed_Ops
: constant Boolean := False;
147 Frontend_Layout
: constant Boolean := False;
148 Machine_Overflows
: constant Boolean := False;
149 Machine_Rounds
: constant Boolean := True;
150 Preallocated_Stacks
: constant Boolean := False;
151 Signed_Zeros
: constant Boolean := True;
152 Stack_Check_Default
: constant Boolean := False;
153 Stack_Check_Probes
: constant Boolean := True;
154 Stack_Check_Limits
: constant Boolean := False;
155 Support_Aggregates
: constant Boolean := True;
156 Support_Composite_Assign
: constant Boolean := True;
157 Support_Composite_Compare
: constant Boolean := True;
158 Support_Long_Shifts
: constant Boolean := True;
159 Always_Compatible_Rep
: constant Boolean := False;
160 Suppress_Standard_Library
: constant Boolean := False;
161 Use_Ada_Main_Program_Name
: constant Boolean := False;
162 Frontend_Exceptions
: constant Boolean := False;
163 ZCX_By_Default
: constant Boolean := True;
165 Executable_Extension
: constant String := ".vxe";