Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/system-vxworks-ppc-ravenscar.ads @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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68:561a7518be6b | 111:04ced10e8804 |
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1 ------------------------------------------------------------------------------ | |
2 -- -- | |
3 -- GNAT RUN-TIME COMPONENTS -- | |
4 -- -- | |
5 -- S Y S T E M -- | |
6 -- -- | |
7 -- S p e c -- | |
8 -- (VxWorks/HIE Ravenscar Version PPC) -- | |
9 -- -- | |
10 -- Copyright (C) 1992-2017, 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 a Ravenscar VxWorks version of this package for PowerPC targets | |
38 | |
39 pragma Restrictions (No_Exception_Propagation); | |
40 -- Only local exception handling is supported in this profile | |
41 | |
42 pragma Restrictions (No_Exception_Registration); | |
43 -- Disable exception name registration. This capability is not used because | |
44 -- it is only required by exception stream attributes which are not supported | |
45 -- in this run time. | |
46 | |
47 pragma Restrictions (No_Implicit_Dynamic_Code); | |
48 -- Pointers to nested subprograms are not allowed in this run time, in order | |
49 -- to prevent the compiler from building "trampolines". | |
50 | |
51 pragma Restrictions (No_Finalization); | |
52 -- Controlled types are not supported in this run time | |
53 | |
54 pragma Profile (Ravenscar); | |
55 -- This is a Ravenscar run time | |
56 | |
57 pragma Discard_Names; | |
58 -- Disable explicitly the generation of names associated with entities in | |
59 -- order to reduce the amount of storage used. These names are not used anyway | |
60 -- (attributes such as 'Image and 'Value are not supported in this run time). | |
61 | |
62 package System is | |
63 pragma Pure; | |
64 -- Note that we take advantage of the implementation permission to make | |
65 -- this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada | |
66 -- 2005, this is Pure in any case (AI-362). | |
67 | |
68 pragma No_Elaboration_Code_All; | |
69 -- Allow the use of that restriction in units that WITH this unit | |
70 | |
71 type Name is (SYSTEM_NAME_GNAT); | |
72 System_Name : constant Name := SYSTEM_NAME_GNAT; | |
73 | |
74 -- System-Dependent Named Numbers | |
75 | |
76 Min_Int : constant := Long_Long_Integer'First; | |
77 Max_Int : constant := Long_Long_Integer'Last; | |
78 | |
79 Max_Binary_Modulus : constant := 2 ** Long_Long_Integer'Size; | |
80 Max_Nonbinary_Modulus : constant := 2 ** Integer'Size - 1; | |
81 | |
82 Max_Base_Digits : constant := Long_Long_Float'Digits; | |
83 Max_Digits : constant := Long_Long_Float'Digits; | |
84 | |
85 Max_Mantissa : constant := 63; | |
86 Fine_Delta : constant := 2.0 ** (-Max_Mantissa); | |
87 | |
88 Tick : constant := 1.0 / 60.0; | |
89 | |
90 -- Storage-related Declarations | |
91 | |
92 type Address is private; | |
93 pragma Preelaborable_Initialization (Address); | |
94 Null_Address : constant Address; | |
95 | |
96 Storage_Unit : constant := 8; | |
97 Word_Size : constant := 32; | |
98 Memory_Size : constant := 2 ** 32; | |
99 | |
100 -- Address comparison | |
101 | |
102 function "<" (Left, Right : Address) return Boolean; | |
103 function "<=" (Left, Right : Address) return Boolean; | |
104 function ">" (Left, Right : Address) return Boolean; | |
105 function ">=" (Left, Right : Address) return Boolean; | |
106 function "=" (Left, Right : Address) return Boolean; | |
107 | |
108 pragma Import (Intrinsic, "<"); | |
109 pragma Import (Intrinsic, "<="); | |
110 pragma Import (Intrinsic, ">"); | |
111 pragma Import (Intrinsic, ">="); | |
112 pragma Import (Intrinsic, "="); | |
113 | |
114 -- Other System-Dependent Declarations | |
115 | |
116 type Bit_Order is (High_Order_First, Low_Order_First); | |
117 Default_Bit_Order : constant Bit_Order := High_Order_First; | |
118 pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning | |
119 | |
120 -- Priority-related Declarations (RM D.1) | |
121 | |
122 -- Ada priorities are mapped to VxWorks priorities using the following | |
123 -- transformation: 255 - Ada Priority | |
124 | |
125 -- Ada priorities are used as follows: | |
126 | |
127 -- 256 is reserved for the VxWorks kernel | |
128 -- 248 - 255 correspond to hardware interrupt levels 0 .. 7 | |
129 -- 247 is a catchall default "interrupt" priority for signals, | |
130 -- allowing higher priority than normal tasks, but lower than | |
131 -- hardware priority levels. Protected Object ceilings can | |
132 -- override these values. | |
133 -- 246 is used by the Interrupt_Manager task | |
134 | |
135 Max_Priority : constant Positive := 245; | |
136 Max_Interrupt_Priority : constant Positive := 255; | |
137 | |
138 subtype Any_Priority is Integer range 0 .. 255; | |
139 subtype Priority is Any_Priority range 0 .. 245; | |
140 subtype Interrupt_Priority is Any_Priority range 246 .. 255; | |
141 | |
142 Default_Priority : constant Priority := 122; | |
143 | |
144 private | |
145 | |
146 type Address is mod Memory_Size; | |
147 Null_Address : constant Address := 0; | |
148 | |
149 -------------------------------------- | |
150 -- System Implementation Parameters -- | |
151 -------------------------------------- | |
152 | |
153 -- These parameters provide information about the target that is used | |
154 -- by the compiler. They are in the private part of System, where they | |
155 -- can be accessed using the special circuitry in the Targparm unit | |
156 -- whose source should be consulted for more detailed descriptions | |
157 -- of the individual switch values. | |
158 | |
159 Backend_Divide_Checks : constant Boolean := False; | |
160 Backend_Overflow_Checks : constant Boolean := True; | |
161 Command_Line_Args : constant Boolean := False; | |
162 Configurable_Run_Time : constant Boolean := True; | |
163 Denorm : constant Boolean := True; | |
164 Duration_32_Bits : constant Boolean := True; | |
165 Exit_Status_Supported : constant Boolean := True; | |
166 Fractional_Fixed_Ops : constant Boolean := False; | |
167 Frontend_Layout : constant Boolean := False; | |
168 Machine_Overflows : constant Boolean := True; | |
169 Machine_Rounds : constant Boolean := True; | |
170 Preallocated_Stacks : constant Boolean := False; | |
171 Signed_Zeros : constant Boolean := True; | |
172 Stack_Check_Default : constant Boolean := False; | |
173 Stack_Check_Probes : constant Boolean := False; | |
174 Stack_Check_Limits : constant Boolean := True; | |
175 Support_Aggregates : constant Boolean := True; | |
176 Support_Composite_Assign : constant Boolean := True; | |
177 Support_Composite_Compare : constant Boolean := True; | |
178 Support_Long_Shifts : constant Boolean := True; | |
179 Always_Compatible_Rep : constant Boolean := True; | |
180 Suppress_Standard_Library : constant Boolean := True; | |
181 Use_Ada_Main_Program_Name : constant Boolean := True; | |
182 Frontend_Exceptions : constant Boolean := True; | |
183 ZCX_By_Default : constant Boolean := False; | |
184 | |
185 Executable_Extension : constant String := ".out"; | |
186 | |
187 end System; |