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

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents
children 1830386684a0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
131
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
1 ------------------------------------------------------------------------------
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
2 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
3 -- GNAT RUN-TIME COMPONENTS --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
4 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
5 -- S Y S T E M --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
6 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
7 -- S p e c --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
8 -- (VxWorks 7 Kernel Version PPC) --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
9 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
10 -- Copyright (C) 1992-2018, Free Software Foundation, Inc. --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
11 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
12 -- This specification is derived from the Ada Reference Manual for use with --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
13 -- GNAT. The copyright notice above, and the license provisions that follow --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
14 -- apply solely to the contents of the part following the private keyword. --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
15 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
16 -- GNAT is free software; you can redistribute it and/or modify it under --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
17 -- terms of the GNU General Public License as published by the Free Soft- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
18 -- ware Foundation; either version 3, or (at your option) any later ver- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
19 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
20 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
21 -- or FITNESS FOR A PARTICULAR PURPOSE. --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
22 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
23 -- As a special exception under Section 7 of GPL version 3, you are granted --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
24 -- additional permissions described in the GCC Runtime Library Exception, --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
25 -- version 3.1, as published by the Free Software Foundation. --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
26 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
27 -- You should have received a copy of the GNU General Public License and --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
28 -- a copy of the GCC Runtime Library Exception along with this program; --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
29 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
30 -- <http://www.gnu.org/licenses/>. --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
31 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
32 -- GNAT was originally developed by the GNAT team at New York University. --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
33 -- Extensive contributions were provided by Ada Core Technologies Inc. --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
34 -- --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
35 ------------------------------------------------------------------------------
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
36
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
37 package System is
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
38 pragma Pure;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
39 -- Note that we take advantage of the implementation permission to make
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
40 -- this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
41 -- 2005, this is Pure in any case (AI-362).
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
42
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
43 pragma No_Elaboration_Code_All;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
44 -- Allow the use of that restriction in units that WITH this unit
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
45
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
46 type Name is (SYSTEM_NAME_GNAT);
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
47 System_Name : constant Name := SYSTEM_NAME_GNAT;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
48
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
49 -- System-Dependent Named Numbers
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
50
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
51 Min_Int : constant := Long_Long_Integer'First;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
52 Max_Int : constant := Long_Long_Integer'Last;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
53
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
54 Max_Binary_Modulus : constant := 2 ** Long_Long_Integer'Size;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
55 Max_Nonbinary_Modulus : constant := 2 ** Integer'Size - 1;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
56
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
57 Max_Base_Digits : constant := Long_Long_Float'Digits;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
58 Max_Digits : constant := Long_Long_Float'Digits;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
59
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
60 Max_Mantissa : constant := 63;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
61 Fine_Delta : constant := 2.0 ** (-Max_Mantissa);
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
62
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
63 Tick : constant := 1.0 / 60.0;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
64
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
65 -- Storage-related Declarations
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
66
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
67 type Address is private;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
68 pragma Preelaborable_Initialization (Address);
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
69 Null_Address : constant Address;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
70
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
71 Storage_Unit : constant := 8;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
72 Word_Size : constant := 32;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
73 Memory_Size : constant := 2 ** 32;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
74
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
75 -- Address comparison
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
76
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
77 function "<" (Left, Right : Address) return Boolean;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
78 function "<=" (Left, Right : Address) return Boolean;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
79 function ">" (Left, Right : Address) return Boolean;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
80 function ">=" (Left, Right : Address) return Boolean;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
81 function "=" (Left, Right : Address) return Boolean;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
82
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
83 pragma Import (Intrinsic, "<");
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
84 pragma Import (Intrinsic, "<=");
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
85 pragma Import (Intrinsic, ">");
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
86 pragma Import (Intrinsic, ">=");
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
87 pragma Import (Intrinsic, "=");
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
88
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
89 -- Other System-Dependent Declarations
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
90
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
91 type Bit_Order is (High_Order_First, Low_Order_First);
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
92 Default_Bit_Order : constant Bit_Order := High_Order_First;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
93 pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
94
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
95 -- Priority-related Declarations (RM D.1)
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
96
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
97 -- Ada priorities are mapped to VxWorks priorities using the following
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
98 -- transformation: 255 - Ada Priority
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
99
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
100 -- Ada priorities are used as follows:
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
101
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
102 -- 256 is reserved for the VxWorks kernel
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
103 -- 248 - 255 correspond to hardware interrupt levels 0 .. 7
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
104 -- 247 is a catchall default "interrupt" priority for signals,
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
105 -- allowing higher priority than normal tasks, but lower than
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
106 -- hardware priority levels. Protected Object ceilings can
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
107 -- override these values.
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
108 -- 246 is used by the Interrupt_Manager task
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
109
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
110 Max_Priority : constant Positive := 245;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
111 Max_Interrupt_Priority : constant Positive := 255;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
112
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
113 subtype Any_Priority is Integer range 0 .. 255;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
114 subtype Priority is Any_Priority range 0 .. 245;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
115 subtype Interrupt_Priority is Any_Priority range 246 .. 255;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
116
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
117 Default_Priority : constant Priority := 122;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
118
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
119 private
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
120
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
121 pragma Linker_Options ("--specs=vxworks7-gnat-crtbe-link.spec");
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
122 -- Pull in crtbegin/crtend objects and register exceptions for ZCX.
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
123 -- This is commented out by our Makefile for SJLJ runtimes.
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
124
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
125 type Address is mod Memory_Size;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
126 Null_Address : constant Address := 0;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
127
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
128 --------------------------------------
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
129 -- System Implementation Parameters --
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
130 --------------------------------------
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
131
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
132 -- These parameters provide information about the target that is used
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
133 -- by the compiler. They are in the private part of System, where they
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
134 -- can be accessed using the special circuitry in the Targparm unit
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
135 -- whose source should be consulted for more detailed descriptions
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
136 -- of the individual switch values.
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
137
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
138 Backend_Divide_Checks : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
139 Backend_Overflow_Checks : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
140 Command_Line_Args : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
141 Configurable_Run_Time : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
142 Denorm : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
143 Duration_32_Bits : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
144 Exit_Status_Supported : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
145 Fractional_Fixed_Ops : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
146 Frontend_Layout : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
147 Machine_Overflows : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
148 Machine_Rounds : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
149 Preallocated_Stacks : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
150 Signed_Zeros : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
151 Stack_Check_Default : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
152 Stack_Check_Probes : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
153 Stack_Check_Limits : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
154 Support_Aggregates : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
155 Support_Composite_Assign : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
156 Support_Composite_Compare : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
157 Support_Long_Shifts : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
158 Always_Compatible_Rep : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
159 Suppress_Standard_Library : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
160 Use_Ada_Main_Program_Name : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
161 Frontend_Exceptions : constant Boolean := False;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
162 ZCX_By_Default : constant Boolean := True;
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
163
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
164 Executable_Extension : constant String := ".out";
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
165
84e7813d76e9 gcc-8.2
mir3636
parents:
diff changeset
166 end System;