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comparison gcc/ada/libgnat/system-vxworks7-ppc-rtp.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.x PPC RTP) --
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 -- This is the VxWorks version of this package for RTPs
38
39 package System is
40 pragma Pure;
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).
44
45 pragma No_Elaboration_Code_All;
46 -- Allow the use of that restriction in units that WITH this unit
47
48 type Name is (SYSTEM_NAME_GNAT);
49 System_Name : constant Name := SYSTEM_NAME_GNAT;
50
51 -- System-Dependent Named Numbers
52
53 Min_Int : constant := Long_Long_Integer'First;
54 Max_Int : constant := Long_Long_Integer'Last;
55
56 Max_Binary_Modulus : constant := 2 ** Long_Long_Integer'Size;
57 Max_Nonbinary_Modulus : constant := 2 ** Integer'Size - 1;
58
59 Max_Base_Digits : constant := Long_Long_Float'Digits;
60 Max_Digits : constant := Long_Long_Float'Digits;
61
62 Max_Mantissa : constant := 63;
63 Fine_Delta : constant := 2.0 ** (-Max_Mantissa);
64
65 Tick : constant := 1.0 / 60.0;
66
67 -- Storage-related Declarations
68
69 type Address is private;
70 pragma Preelaborable_Initialization (Address);
71 Null_Address : constant Address;
72
73 Storage_Unit : constant := 8;
74 Word_Size : constant := 32;
75 Memory_Size : constant := 2 ** 32;
76
77 -- Address comparison
78
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;
84
85 pragma Import (Intrinsic, "<");
86 pragma Import (Intrinsic, "<=");
87 pragma Import (Intrinsic, ">");
88 pragma Import (Intrinsic, ">=");
89 pragma Import (Intrinsic, "=");
90
91 -- Other System-Dependent Declarations
92
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
96
97 -- Priority-related Declarations (RM D.1)
98
99 -- Ada priorities are mapped to VxWorks priorities using the following
100 -- transformation: 255 - Ada Priority
101
102 -- Ada priorities are used as follows:
103
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
111
112 Max_Priority : constant Positive := 245;
113 Max_Interrupt_Priority : constant Positive := 255;
114
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;
118
119 Default_Priority : constant Priority := 122;
120
121 private
122
123 pragma Linker_Options ("--specs=vxworks7-gnat-crtbe-link.spec");
124 -- Pull in crtbegin/crtend objects and register exceptions for ZCX.
125 -- This is commented out by our Makefile for SJLJ runtimes.
126
127 pragma Linker_Options ("--specs=vxworks-ppc-link.spec");
128 -- Setup proper set of -L's for this configuration
129
130 type Address is mod Memory_Size;
131 Null_Address : constant Address := 0;
132
133 --------------------------------------
134 -- System Implementation Parameters --
135 --------------------------------------
136
137 -- These parameters provide information about the target that is used
138 -- by the compiler. They are in the private part of System, where they
139 -- can be accessed using the special circuitry in the Targparm unit
140 -- whose source should be consulted for more detailed descriptions
141 -- of the individual switch values.
142
143 Backend_Divide_Checks : constant Boolean := False;
144 Backend_Overflow_Checks : constant Boolean := True;
145 Command_Line_Args : constant Boolean := True;
146 Configurable_Run_Time : constant Boolean := False;
147 Denorm : constant Boolean := True;
148 Duration_32_Bits : constant Boolean := False;
149 Exit_Status_Supported : constant Boolean := True;
150 Fractional_Fixed_Ops : constant Boolean := False;
151 Frontend_Layout : constant Boolean := False;
152 Machine_Overflows : constant Boolean := False;
153 Machine_Rounds : constant Boolean := True;
154 Preallocated_Stacks : constant Boolean := False;
155 Signed_Zeros : constant Boolean := True;
156 Stack_Check_Default : constant Boolean := False;
157 Stack_Check_Probes : constant Boolean := True;
158 Stack_Check_Limits : constant Boolean := False;
159 Support_Aggregates : constant Boolean := True;
160 Support_Composite_Assign : constant Boolean := True;
161 Support_Composite_Compare : constant Boolean := True;
162 Support_Long_Shifts : constant Boolean := True;
163 Always_Compatible_Rep : constant Boolean := False;
164 Suppress_Standard_Library : constant Boolean := False;
165 Use_Ada_Main_Program_Name : constant Boolean := False;
166 Frontend_Exceptions : constant Boolean := False;
167 ZCX_By_Default : constant Boolean := True;
168
169 Executable_Extension : constant String := ".vxe";
170
171 end System;