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comparison gcc/ada/libgnat/system-vxworks7-ppc-kernel.ads @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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children 1830386684a0
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111:04ced10e8804 131:84e7813d76e9
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- S Y S T E M --
6 -- --
7 -- S p e c --
8 -- (VxWorks 7 Kernel Version PPC) --
9 -- --
10 -- Copyright (C) 1992-2018, Free Software Foundation, Inc. --
11 -- --
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. --
15 -- --
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. --
22 -- --
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. --
26 -- --
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/>. --
31 -- --
32 -- GNAT was originally developed by the GNAT team at New York University. --
33 -- Extensive contributions were provided by Ada Core Technologies Inc. --
34 -- --
35 ------------------------------------------------------------------------------
36
37 package System is
38 pragma Pure;
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).
42
43 pragma No_Elaboration_Code_All;
44 -- Allow the use of that restriction in units that WITH this unit
45
46 type Name is (SYSTEM_NAME_GNAT);
47 System_Name : constant Name := SYSTEM_NAME_GNAT;
48
49 -- System-Dependent Named Numbers
50
51 Min_Int : constant := Long_Long_Integer'First;
52 Max_Int : constant := Long_Long_Integer'Last;
53
54 Max_Binary_Modulus : constant := 2 ** Long_Long_Integer'Size;
55 Max_Nonbinary_Modulus : constant := 2 ** Integer'Size - 1;
56
57 Max_Base_Digits : constant := Long_Long_Float'Digits;
58 Max_Digits : constant := Long_Long_Float'Digits;
59
60 Max_Mantissa : constant := 63;
61 Fine_Delta : constant := 2.0 ** (-Max_Mantissa);
62
63 Tick : constant := 1.0 / 60.0;
64
65 -- Storage-related Declarations
66
67 type Address is private;
68 pragma Preelaborable_Initialization (Address);
69 Null_Address : constant Address;
70
71 Storage_Unit : constant := 8;
72 Word_Size : constant := 32;
73 Memory_Size : constant := 2 ** 32;
74
75 -- Address comparison
76
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;
81 function "=" (Left, Right : Address) return Boolean;
82
83 pragma Import (Intrinsic, "<");
84 pragma Import (Intrinsic, "<=");
85 pragma Import (Intrinsic, ">");
86 pragma Import (Intrinsic, ">=");
87 pragma Import (Intrinsic, "=");
88
89 -- Other System-Dependent Declarations
90
91 type Bit_Order is (High_Order_First, Low_Order_First);
92 Default_Bit_Order : constant Bit_Order := High_Order_First;
93 pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
94
95 -- Priority-related Declarations (RM D.1)
96
97 -- Ada priorities are mapped to VxWorks priorities using the following
98 -- transformation: 255 - Ada Priority
99
100 -- Ada priorities are used as follows:
101
102 -- 256 is reserved for the VxWorks kernel
103 -- 248 - 255 correspond to hardware interrupt levels 0 .. 7
104 -- 247 is a catchall default "interrupt" priority for signals,
105 -- allowing higher priority than normal tasks, but lower than
106 -- hardware priority levels. Protected Object ceilings can
107 -- override these values.
108 -- 246 is used by the Interrupt_Manager task
109
110 Max_Priority : constant Positive := 245;
111 Max_Interrupt_Priority : constant Positive := 255;
112
113 subtype Any_Priority is Integer range 0 .. 255;
114 subtype Priority is Any_Priority range 0 .. 245;
115 subtype Interrupt_Priority is Any_Priority range 246 .. 255;
116
117 Default_Priority : constant Priority := 122;
118
119 private
120
121 pragma Linker_Options ("--specs=vxworks7-gnat-crtbe-link.spec");
122 -- Pull in crtbegin/crtend objects and register exceptions for ZCX.
123 -- This is commented out by our Makefile for SJLJ runtimes.
124
125 type Address is mod Memory_Size;
126 Null_Address : constant Address := 0;
127
128 --------------------------------------
129 -- System Implementation Parameters --
130 --------------------------------------
131
132 -- These parameters provide information about the target that is used
133 -- by the compiler. They are in the private part of System, where they
134 -- can be accessed using the special circuitry in the Targparm unit
135 -- whose source should be consulted for more detailed descriptions
136 -- of the individual switch values.
137
138 Backend_Divide_Checks : constant Boolean := False;
139 Backend_Overflow_Checks : constant Boolean := True;
140 Command_Line_Args : constant Boolean := False;
141 Configurable_Run_Time : constant Boolean := False;
142 Denorm : constant Boolean := True;
143 Duration_32_Bits : constant Boolean := False;
144 Exit_Status_Supported : constant Boolean := True;
145 Fractional_Fixed_Ops : constant Boolean := False;
146 Frontend_Layout : constant Boolean := False;
147 Machine_Overflows : constant Boolean := False;
148 Machine_Rounds : constant Boolean := True;
149 Preallocated_Stacks : constant Boolean := False;
150 Signed_Zeros : constant Boolean := True;
151 Stack_Check_Default : constant Boolean := False;
152 Stack_Check_Probes : constant Boolean := True;
153 Stack_Check_Limits : constant Boolean := False;
154 Support_Aggregates : constant Boolean := True;
155 Support_Composite_Assign : constant Boolean := True;
156 Support_Composite_Compare : constant Boolean := True;
157 Support_Long_Shifts : constant Boolean := True;
158 Always_Compatible_Rep : constant Boolean := False;
159 Suppress_Standard_Library : constant Boolean := False;
160 Use_Ada_Main_Program_Name : constant Boolean := True;
161 Frontend_Exceptions : constant Boolean := False;
162 ZCX_By_Default : constant Boolean := True;
163
164 Executable_Extension : constant String := ".out";
165
166 end System;