1 // Written in the D programming language.
2 
3 /**
4  * Information about the target operating system, environment, and CPU.
5  *
6  *  Copyright: Copyright The D Language Foundation 2000 - 2011
7  *  License:   $(HTTP www.boost.org/LICENSE_1_0.txt, Boost License 1.0).
8  *  Authors:   $(HTTP digitalmars.com, Walter Bright) and
9                $(HTTP jmdavisprog.com, Jonathan M Davis)
10  *  Source:    $(PHOBOSSRC phobos/sys/system.d)
11  */
12 module phobos.sys.system;
13 
14 immutable
15 {
16     /++
17         Operating system.
18 
19         Note:
20             This is for cases where you need a value representing the OS at
21             runtime. If you're doing something which should compile differently
22             on different OSes, then please use `version (Windows)`,
23             `version (linux)`, etc.
24 
25         See_Also:
26             $(DDSUBLINK spec/version,PredefinedVersions, Predefined Versions)
27       +/
28     enum OS
29     {
30         win32 = 1, /// Microsoft 32 bit Windows systems
31         win64,     /// Microsoft 64 bit Windows systems
32         linux,     /// All Linux Systems, except for Android
33         osx,       /// Mac OS X
34         iOS,       /// iOS
35         tvOS,      /// tvOS
36         watchOS,   /// watchOS
37         freeBSD,   /// FreeBSD
38         netBSD,    /// NetBSD
39         openBSD,   /// OpenBSD
40         dragonFlyBSD, /// DragonFlyBSD
41         solaris,   /// Solaris
42         android,   /// Android
43         otherPosix, /// Other Posix Systems
44         unknown,   /// Unknown
45     }
46 
47     /// The OS that the program was compiled for.
48     version (Win32)        OS os = OS.win32;
49     else version (Win64)   OS os = OS.win64;
50     else version (Android) OS os = OS.android;
51     else version (linux)   OS os = OS.linux;
52     else version (OSX)     OS os = OS.osx;
53     else version (iOS)     OS os = OS.iOS;
54     else version (tvOS)    OS os = OS.tvOS;
55     else version (watchOS) OS os = OS.watchOS;
56     else version (FreeBSD) OS os = OS.freeBSD;
57     else version (NetBSD)  OS os = OS.netBSD;
58     else version (OpenBSD) OS os = OS.openBSD;
59     else version (DragonFlyBSD) OS os = OS.dragonFlyBSD;
60     else version (Posix)   OS os = OS.otherPosix;
61     else OS os = OS.unknown;
62 
63     /++
64         Byte order endianness.
65 
66         Note:
67             This is intended for cases where you need to deal with endianness at
68             runtime. If you're doing something which should compile differently
69             depending on whether you're compiling on a big endian or little
70             endian machine, then please use `version (BigEndian)` and
71             `version (LittleEndian)`.
72 
73         See_Also:
74             $(DDSUBLINK spec/version,PredefinedVersions, Predefined Versions)
75       +/
76     enum Endian
77     {
78         bigEndian,   /// Big endian byte order
79         littleEndian /// Little endian byte order
80     }
81 
82     /// The endianness that the program was compiled for.
83     version (LittleEndian) Endian endian = Endian.littleEndian;
84     else                  Endian endian = Endian.bigEndian;
85     /++
86         Instruction Set Architecture.
87 
88         Note:
89             This is intended for cases where you need a value representing the
90             instruction set architecture at runtime. If you're doing something
91             which should compile differently depending on instruction set
92             architecture, then please use `version (X86_64)`, `version (ARM)`,
93             etc.
94 
95         See_Also:
96             $(DDSUBLINK spec/version,PredefinedVersions, Predefined Versions)
97       +/
98     enum ISA
99     {
100         x86,   /// Intel and AMD 32-bit processors
101         x86_64, /// Intel and AMD 64-bit processors
102         arm, /// The ARM architecture (32-bit) (AArch32 et al)
103         aarch64, /// The Advanced RISC Machine architecture (64-bit)
104         asmJS, /// The asm.js intermediate programming language
105         avr, /// 8-bit Atmel AVR Microcontrollers
106         epiphany, /// The Epiphany architecture
107         ppc, /// The PowerPC architecture, 32-bit
108         ppc64, /// The PowerPC architecture, 64-bit
109         ia64, /// The Itanium architecture (64-bit)
110         mips32, /// The MIPS architecture, 32-bit
111         mips64, /// The MIPS architecture, 64-bit
112         msp430, /// The MSP430 architecture
113         nvptx, /// The Nvidia Parallel Thread Execution (PTX) architecture, 32-bit
114         nvptx64, /// The Nvidia Parallel Thread Execution (PTX) architecture, 64-bit
115         riscv32, /// The RISC-V architecture, 32-bit
116         riscv64, /// The RISC-V architecture, 64-bit
117         sparc, /// The SPARC architecture, 32-bit
118         sparc64, /// The SPARC architecture, 64-bit
119         s390, /// The System/390 architecture, 32-bit
120         systemZ, /// The System Z architecture, 64-bit
121         hppa, /// The HP PA-RISC architecture, 32-bit
122         hppa64, /// The HP PA-RISC architecture, 64-bit
123         sh, /// The SuperH architecture, 32-bit
124         webAssembly, /// The WebAssembly virtual ISA (instruction set architecture), 32-bit
125         alpha, /// The Alpha architecture
126         unknown, /// Unknown
127     }
128 
129     /// The instruction set architecture that the program was compiled for.
130     version (X86) ISA instructionSetArchitecture = ISA.x86;
131     else version (X86_64)   ISA instructionSetArchitecture = ISA.x86_64;
132     else version (ARM)      ISA instructionSetArchitecture = ISA.arm;
133     else version (AArch64)  ISA instructionSetArchitecture = ISA.aarch64;
134     else version (AsmJS)    ISA instructionSetArchitecture = ISA.asmJS;
135     else version (AVR)      ISA instructionSetArchitecture = ISA.avr;
136     else version (Epiphany) ISA instructionSetArchitecture = ISA.epiphany;
137     else version (PPC)      ISA instructionSetArchitecture = ISA.ppc;
138     else version (PPC64)    ISA instructionSetArchitecture = ISA.ppc64;
139     else version (IA64)     ISA instructionSetArchitecture = ISA.ia64;
140     else version (MIPS32)   ISA instructionSetArchitecture = ISA.mips32;
141     else version (MIPS64)   ISA instructionSetArchitecture = ISA.mips64;
142     else version (MSP430)   ISA instructionSetArchitecture = ISA.msp430;
143     else version (NVPTX)    ISA instructionSetArchitecture = ISA.nvptx;
144     else version (NVPTX64)  ISA instructionSetArchitecture = ISA.nvptx64;
145     else version (RISCV32)  ISA instructionSetArchitecture = ISA.riscv32;
146     else version (RISCV64)  ISA instructionSetArchitecture = ISA.riscv64;
147     else version (SPARC)    ISA instructionSetArchitecture = ISA.sparc;
148     else version (SPARC64)  ISA instructionSetArchitecture = ISA.sparc64;
149     else version (S390)     ISA instructionSetArchitecture = ISA.s390;
150     else version (SystemZ)  ISA instructionSetArchitecture = ISA.systemZ;
151     else version (HPPA)     ISA instructionSetArchitecture = ISA.hppa;
152     else version (HPPA64)   ISA instructionSetArchitecture = ISA.hppa64;
153     else version (SH)       ISA instructionSetArchitecture = ISA.sh;
154     else version (WebAssembly) ISA instructionSetArchitecture = ISA.webAssembly;
155     else version (Alpha)    ISA instructionSetArchitecture = ISA.alpha;
156     else ISA instructionSetArchitecture = ISA.unknown;
157 }
158