1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
8 -- (VXWORKS Version PPC) --
12 -- Copyright (C) 1992-2002 Free Software Foundation, Inc. --
14 -- This specification is derived from the Ada Reference Manual for use with --
15 -- GNAT. The copyright notice above, and the license provisions that follow --
16 -- apply solely to the contents of the part following the private keyword. --
18 -- GNAT is free software; you can redistribute it and/or modify it under --
19 -- terms of the GNU General Public License as published by the Free Soft- --
20 -- ware Foundation; either version 2, or (at your option) any later ver- --
21 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
22 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
23 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
24 -- for more details. You should have received a copy of the GNU General --
25 -- Public License distributed with GNAT; see file COPYING. If not, write --
26 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
27 -- MA 02111-1307, USA. --
29 -- As a special exception, if other files instantiate generics from this --
30 -- unit, or you link this unit with other files to produce an executable, --
31 -- this unit does not by itself cause the resulting executable to be --
32 -- covered by the GNU General Public License. This exception does not --
33 -- however invalidate any other reasons why the executable file might be --
34 -- covered by the GNU Public License. --
36 -- GNAT was originally developed by the GNAT team at New York University. --
37 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
39 ------------------------------------------------------------------------------
43 -- Note that we take advantage of the implementation permission to
44 -- make this unit Pure instead of Preelaborable, see RM 13.7(36)
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 := Integer'Last;
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;
65 -- Storage-related Declarations
67 type Address is private;
68 Null_Address : constant Address;
70 Storage_Unit : constant := 8;
71 Word_Size : constant := 32;
72 Memory_Size : constant := 2 ** 32;
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;
80 function "=" (Left, Right : Address) return Boolean;
82 pragma Import (Intrinsic, "<");
83 pragma Import (Intrinsic, "<=");
84 pragma Import (Intrinsic, ">");
85 pragma Import (Intrinsic, ">=");
86 pragma Import (Intrinsic, "=");
88 -- Other System-Dependent Declarations
90 type Bit_Order is (High_Order_First, Low_Order_First);
91 Default_Bit_Order : constant Bit_Order := High_Order_First;
93 -- Priority-related Declarations (RM D.1)
95 -- 256 is reserved for the VxWorks kernel
96 -- 248 - 255 correspond to hardware interrupt levels 0 .. 7
97 -- 247 is a catchall default "interrupt" priority for signals,
98 -- allowing higher priority than normal tasks, but lower than
99 -- hardware priority levels. Protected Object ceilings can
100 -- override these values.
101 -- 246 is used by the Interrupt_Manager task
103 Max_Priority : constant Positive := 245;
104 Max_Interrupt_Priority : constant Positive := 255;
106 subtype Any_Priority is Integer range 0 .. 255;
107 subtype Priority is Any_Priority range 0 .. 245;
108 subtype Interrupt_Priority is Any_Priority range 246 .. 255;
110 Default_Priority : constant Priority := 122;
114 type Address is mod Memory_Size;
115 Null_Address : constant Address := 0;
117 --------------------------------------
118 -- System Implementation Parameters --
119 --------------------------------------
121 -- These parameters provide information about the target that is used
122 -- by the compiler. They are in the private part of System, where they
123 -- can be accessed using the special circuitry in the Targparm unit
124 -- whose source should be consulted for more detailed descriptions
125 -- of the individual switch values.
127 AAMP : constant Boolean := False;
128 Backend_Divide_Checks : constant Boolean := False;
129 Backend_Overflow_Checks : constant Boolean := False;
130 Command_Line_Args : constant Boolean := False;
131 Denorm : constant Boolean := True;
132 Fractional_Fixed_Ops : constant Boolean := False;
133 Frontend_Layout : constant Boolean := False;
134 Functions_Return_By_DSP : constant Boolean := False;
135 Long_Shifts_Inlined : constant Boolean := False;
136 High_Integrity_Mode : constant Boolean := False;
137 Machine_Overflows : constant Boolean := False;
138 Machine_Rounds : constant Boolean := True;
139 OpenVMS : constant Boolean := False;
140 Signed_Zeros : constant Boolean := True;
141 Stack_Check_Default : constant Boolean := False;
142 Stack_Check_Probes : constant Boolean := False;
143 Use_Ada_Main_Program_Name : constant Boolean := True;
144 ZCX_By_Default : constant Boolean := False;
145 GCC_ZCX_Support : constant Boolean := False;
146 Front_End_ZCX_Support : constant Boolean := False;