]>
Commit | Line | Data |
---|---|---|
84481f76 RK |
1 | ------------------------------------------------------------------------------ |
2 | -- -- | |
3 | -- GNAT RUN-TIME COMPONENTS -- | |
4 | -- -- | |
5 | -- S Y S T E M -- | |
6 | -- -- | |
7 | -- S p e c -- | |
fbf5a39b | 8 | -- (Solaris Sparcv9 Version) -- |
84481f76 | 9 | -- -- |
0b6eb8e1 | 10 | -- Copyright (C) 1992-2005 Free Software Foundation, Inc. -- |
84481f76 RK |
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 2, 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. See the GNU General Public License -- | |
22 | -- for more details. You should have received a copy of the GNU General -- | |
23 | -- Public License distributed with GNAT; see file COPYING. If not, write -- | |
24 | -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- | |
25 | -- MA 02111-1307, USA. -- | |
26 | -- -- | |
27 | -- As a special exception, if other files instantiate generics from this -- | |
28 | -- unit, or you link this unit with other files to produce an executable, -- | |
29 | -- this unit does not by itself cause the resulting executable to be -- | |
30 | -- covered by the GNU General Public License. This exception does not -- | |
31 | -- however invalidate any other reasons why the executable file might be -- | |
32 | -- covered by the GNU Public License. -- | |
33 | -- -- | |
34 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
71ff80dc | 35 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
84481f76 RK |
36 | -- -- |
37 | ------------------------------------------------------------------------------ | |
38 | ||
39 | package System is | |
40 | pragma Pure (System); | |
41 | -- Note that we take advantage of the implementation permission to | |
42 | -- make this unit Pure instead of Preelaborable, see RM 13.7(36) | |
43 | ||
44 | type Name is (SYSTEM_NAME_GNAT); | |
45 | System_Name : constant Name := SYSTEM_NAME_GNAT; | |
46 | ||
47 | -- System-Dependent Named Numbers | |
48 | ||
49 | Min_Int : constant := Long_Long_Integer'First; | |
50 | Max_Int : constant := Long_Long_Integer'Last; | |
51 | ||
52 | Max_Binary_Modulus : constant := 2 ** Long_Long_Integer'Size; | |
53 | Max_Nonbinary_Modulus : constant := Integer'Last; | |
54 | ||
55 | Max_Base_Digits : constant := Long_Long_Float'Digits; | |
56 | Max_Digits : constant := Long_Long_Float'Digits; | |
57 | ||
58 | Max_Mantissa : constant := 63; | |
59 | Fine_Delta : constant := 2.0 ** (-Max_Mantissa); | |
60 | ||
fbf5a39b | 61 | Tick : constant := 0.01; |
84481f76 RK |
62 | |
63 | -- Storage-related Declarations | |
64 | ||
65 | type Address is private; | |
66 | Null_Address : constant Address; | |
67 | ||
07fc65c4 | 68 | Storage_Unit : constant := 8; |
fbf5a39b AC |
69 | Word_Size : constant := 64; |
70 | Memory_Size : constant := 2 ** 64; | |
84481f76 RK |
71 | |
72 | -- Address comparison | |
73 | ||
74 | function "<" (Left, Right : Address) return Boolean; | |
75 | function "<=" (Left, Right : Address) return Boolean; | |
76 | function ">" (Left, Right : Address) return Boolean; | |
77 | function ">=" (Left, Right : Address) return Boolean; | |
78 | function "=" (Left, Right : Address) return Boolean; | |
79 | ||
80 | pragma Import (Intrinsic, "<"); | |
81 | pragma Import (Intrinsic, "<="); | |
82 | pragma Import (Intrinsic, ">"); | |
83 | pragma Import (Intrinsic, ">="); | |
84 | pragma Import (Intrinsic, "="); | |
85 | ||
86 | -- Other System-Dependent Declarations | |
87 | ||
88 | type Bit_Order is (High_Order_First, Low_Order_First); | |
07fc65c4 | 89 | Default_Bit_Order : constant Bit_Order := High_Order_First; |
84481f76 RK |
90 | |
91 | -- Priority-related Declarations (RM D.1) | |
92 | ||
07fc65c4 | 93 | Max_Priority : constant Positive := 30; |
84481f76 RK |
94 | Max_Interrupt_Priority : constant Positive := 31; |
95 | ||
07fc65c4 GB |
96 | subtype Any_Priority is Integer range 0 .. 31; |
97 | subtype Priority is Any_Priority range 0 .. 30; | |
98 | subtype Interrupt_Priority is Any_Priority range 31 .. 31; | |
84481f76 | 99 | |
07fc65c4 | 100 | Default_Priority : constant Priority := 15; |
84481f76 RK |
101 | |
102 | private | |
103 | ||
104 | type Address is mod Memory_Size; | |
105 | Null_Address : constant Address := 0; | |
106 | ||
107 | -------------------------------------- | |
108 | -- System Implementation Parameters -- | |
109 | -------------------------------------- | |
110 | ||
111 | -- These parameters provide information about the target that is used | |
112 | -- by the compiler. They are in the private part of System, where they | |
113 | -- can be accessed using the special circuitry in the Targparm unit | |
114 | -- whose source should be consulted for more detailed descriptions | |
115 | -- of the individual switch values. | |
116 | ||
117 | AAMP : constant Boolean := False; | |
07fc65c4 GB |
118 | Backend_Divide_Checks : constant Boolean := False; |
119 | Backend_Overflow_Checks : constant Boolean := False; | |
84481f76 | 120 | Command_Line_Args : constant Boolean := True; |
0b6eb8e1 | 121 | Compiler_System_Version : constant Boolean := False; |
fbf5a39b | 122 | Configurable_Run_Time : constant Boolean := False; |
84481f76 | 123 | Denorm : constant Boolean := True; |
fbf5a39b AC |
124 | Duration_32_Bits : constant Boolean := False; |
125 | Exit_Status_Supported : constant Boolean := True; | |
07fc65c4 | 126 | Fractional_Fixed_Ops : constant Boolean := False; |
84481f76 RK |
127 | Frontend_Layout : constant Boolean := False; |
128 | Functions_Return_By_DSP : constant Boolean := False; | |
84481f76 RK |
129 | Machine_Overflows : constant Boolean := False; |
130 | Machine_Rounds : constant Boolean := True; | |
131 | OpenVMS : constant Boolean := False; | |
b23e28d5 | 132 | Preallocated_Stacks : constant Boolean := False; |
84481f76 RK |
133 | Signed_Zeros : constant Boolean := True; |
134 | Stack_Check_Default : constant Boolean := False; | |
fbf5a39b AC |
135 | Stack_Check_Probes : constant Boolean := True; |
136 | Support_64_Bit_Divides : constant Boolean := True; | |
137 | Support_Aggregates : constant Boolean := True; | |
138 | Support_Composite_Assign : constant Boolean := True; | |
139 | Support_Composite_Compare : constant Boolean := True; | |
140 | Support_Long_Shifts : constant Boolean := True; | |
141 | Suppress_Standard_Library : constant Boolean := False; | |
84481f76 | 142 | Use_Ada_Main_Program_Name : constant Boolean := False; |
fbf5a39b AC |
143 | ZCX_By_Default : constant Boolean := True; |
144 | GCC_ZCX_Support : constant Boolean := True; | |
84481f76 RK |
145 | Front_End_ZCX_Support : constant Boolean := False; |
146 | ||
fbf5a39b AC |
147 | -- Obsolete entries, to be removed eventually (bootstrap issues!) |
148 | ||
149 | High_Integrity_Mode : constant Boolean := False; | |
150 | Long_Shifts_Inlined : constant Boolean := True; | |
151 | ||
84481f76 | 152 | end System; |