Line data Source code
1 : /* SPDX-License-Identifier: LGPL-2.1+ */
2 :
3 : #include <sys/utsname.h>
4 :
5 : #include "architecture.h"
6 : #include "macro.h"
7 : #include "string-table.h"
8 : #include "string-util.h"
9 :
10 5 : int uname_architecture(void) {
11 :
12 : /* Return a sanitized enum identifying the architecture we are
13 : * running on. This is based on uname(), and the user may
14 : * hence control what this returns by using
15 : * personality(). This puts the user in control on systems
16 : * that can run binaries of multiple architectures.
17 : *
18 : * We do not translate the string returned by uname()
19 : * 1:1. Instead we try to clean it up and break down the
20 : * confusion on x86 and arm in particular.
21 : *
22 : * We do not try to distinguish CPUs not CPU features, but
23 : * actual architectures, i.e. that have genuinely different
24 : * code. */
25 :
26 : static const struct {
27 : const char *machine;
28 : int arch;
29 : } arch_map[] = {
30 : #if defined(__x86_64__) || defined(__i386__)
31 : { "x86_64", ARCHITECTURE_X86_64 },
32 : { "i686", ARCHITECTURE_X86 },
33 : { "i586", ARCHITECTURE_X86 },
34 : { "i486", ARCHITECTURE_X86 },
35 : { "i386", ARCHITECTURE_X86 },
36 : #elif defined(__powerpc__) || defined(__powerpc64__)
37 : { "ppc64", ARCHITECTURE_PPC64 },
38 : { "ppc64le", ARCHITECTURE_PPC64_LE },
39 : { "ppc", ARCHITECTURE_PPC },
40 : { "ppcle", ARCHITECTURE_PPC_LE },
41 : #elif defined(__ia64__)
42 : { "ia64", ARCHITECTURE_IA64 },
43 : #elif defined(__hppa__) || defined(__hppa64__)
44 : { "parisc64", ARCHITECTURE_PARISC64 },
45 : { "parisc", ARCHITECTURE_PARISC },
46 : #elif defined(__s390__) || defined(__s390x__)
47 : { "s390x", ARCHITECTURE_S390X },
48 : { "s390", ARCHITECTURE_S390 },
49 : #elif defined(__sparc__)
50 : { "sparc64", ARCHITECTURE_SPARC64 },
51 : { "sparc", ARCHITECTURE_SPARC },
52 : #elif defined(__mips__) || defined(__mips64__)
53 : { "mips64", ARCHITECTURE_MIPS64 },
54 : { "mips", ARCHITECTURE_MIPS },
55 : #elif defined(__alpha__)
56 : { "alpha" , ARCHITECTURE_ALPHA },
57 : #elif defined(__arm__) || defined(__aarch64__)
58 : { "aarch64", ARCHITECTURE_ARM64 },
59 : { "aarch64_be", ARCHITECTURE_ARM64_BE },
60 : { "armv4l", ARCHITECTURE_ARM },
61 : { "armv4b", ARCHITECTURE_ARM_BE },
62 : { "armv4tl", ARCHITECTURE_ARM },
63 : { "armv4tb", ARCHITECTURE_ARM_BE },
64 : { "armv5tl", ARCHITECTURE_ARM },
65 : { "armv5tb", ARCHITECTURE_ARM_BE },
66 : { "armv5tel", ARCHITECTURE_ARM },
67 : { "armv5teb" , ARCHITECTURE_ARM_BE },
68 : { "armv5tejl", ARCHITECTURE_ARM },
69 : { "armv5tejb", ARCHITECTURE_ARM_BE },
70 : { "armv6l", ARCHITECTURE_ARM },
71 : { "armv6b", ARCHITECTURE_ARM_BE },
72 : { "armv7l", ARCHITECTURE_ARM },
73 : { "armv7b", ARCHITECTURE_ARM_BE },
74 : { "armv7ml", ARCHITECTURE_ARM },
75 : { "armv7mb", ARCHITECTURE_ARM_BE },
76 : { "armv4l", ARCHITECTURE_ARM },
77 : { "armv4b", ARCHITECTURE_ARM_BE },
78 : { "armv4tl", ARCHITECTURE_ARM },
79 : { "armv4tb", ARCHITECTURE_ARM_BE },
80 : { "armv5tl", ARCHITECTURE_ARM },
81 : { "armv5tb", ARCHITECTURE_ARM_BE },
82 : { "armv5tel", ARCHITECTURE_ARM },
83 : { "armv5teb", ARCHITECTURE_ARM_BE },
84 : { "armv5tejl", ARCHITECTURE_ARM },
85 : { "armv5tejb", ARCHITECTURE_ARM_BE },
86 : { "armv6l", ARCHITECTURE_ARM },
87 : { "armv6b", ARCHITECTURE_ARM_BE },
88 : { "armv7l", ARCHITECTURE_ARM },
89 : { "armv7b", ARCHITECTURE_ARM_BE },
90 : { "armv7ml", ARCHITECTURE_ARM },
91 : { "armv7mb", ARCHITECTURE_ARM_BE },
92 : { "armv8l", ARCHITECTURE_ARM },
93 : { "armv8b", ARCHITECTURE_ARM_BE },
94 : #elif defined(__sh__) || defined(__sh64__)
95 : { "sh5", ARCHITECTURE_SH64 },
96 : { "sh2", ARCHITECTURE_SH },
97 : { "sh2a", ARCHITECTURE_SH },
98 : { "sh3", ARCHITECTURE_SH },
99 : { "sh4", ARCHITECTURE_SH },
100 : { "sh4a", ARCHITECTURE_SH },
101 : #elif defined(__m68k__)
102 : { "m68k", ARCHITECTURE_M68K },
103 : #elif defined(__tilegx__)
104 : { "tilegx", ARCHITECTURE_TILEGX },
105 : #elif defined(__cris__)
106 : { "crisv32", ARCHITECTURE_CRIS },
107 : #elif defined(__nios2__)
108 : { "nios2", ARCHITECTURE_NIOS2 },
109 : #elif defined(__riscv__) || defined(__riscv)
110 : /* __riscv__ is obsolete, remove in 2018 */
111 : { "riscv32", ARCHITECTURE_RISCV32 },
112 : { "riscv64", ARCHITECTURE_RISCV64 },
113 : # if __SIZEOF_POINTER__ == 4
114 : { "riscv", ARCHITECTURE_RISCV32 },
115 : # elif __SIZEOF_POINTER__ == 8
116 : { "riscv", ARCHITECTURE_RISCV64 },
117 : # endif
118 : #elif defined(__arc__)
119 : { "arc", ARCHITECTURE_ARC },
120 : { "arceb", ARCHITECTURE_ARC_BE },
121 : #else
122 : #error "Please register your architecture here!"
123 : #endif
124 : };
125 :
126 : static int cached = _ARCHITECTURE_INVALID;
127 : struct utsname u;
128 : unsigned i;
129 :
130 5 : if (cached != _ARCHITECTURE_INVALID)
131 3 : return cached;
132 :
133 2 : assert_se(uname(&u) >= 0);
134 :
135 2 : for (i = 0; i < ELEMENTSOF(arch_map); i++)
136 2 : if (streq(arch_map[i].machine, u.machine))
137 2 : return cached = arch_map[i].arch;
138 :
139 0 : assert_not_reached("Couldn't identify architecture. You need to patch systemd.");
140 : return _ARCHITECTURE_INVALID;
141 : }
142 :
143 : static const char *const architecture_table[_ARCHITECTURE_MAX] = {
144 : [ARCHITECTURE_X86] = "x86",
145 : [ARCHITECTURE_X86_64] = "x86-64",
146 : [ARCHITECTURE_PPC] = "ppc",
147 : [ARCHITECTURE_PPC_LE] = "ppc-le",
148 : [ARCHITECTURE_PPC64] = "ppc64",
149 : [ARCHITECTURE_PPC64_LE] = "ppc64-le",
150 : [ARCHITECTURE_IA64] = "ia64",
151 : [ARCHITECTURE_PARISC] = "parisc",
152 : [ARCHITECTURE_PARISC64] = "parisc64",
153 : [ARCHITECTURE_S390] = "s390",
154 : [ARCHITECTURE_S390X] = "s390x",
155 : [ARCHITECTURE_SPARC] = "sparc",
156 : [ARCHITECTURE_SPARC64] = "sparc64",
157 : [ARCHITECTURE_MIPS] = "mips",
158 : [ARCHITECTURE_MIPS_LE] = "mips-le",
159 : [ARCHITECTURE_MIPS64] = "mips64",
160 : [ARCHITECTURE_MIPS64_LE] = "mips64-le",
161 : [ARCHITECTURE_ALPHA] = "alpha",
162 : [ARCHITECTURE_ARM] = "arm",
163 : [ARCHITECTURE_ARM_BE] = "arm-be",
164 : [ARCHITECTURE_ARM64] = "arm64",
165 : [ARCHITECTURE_ARM64_BE] = "arm64-be",
166 : [ARCHITECTURE_SH] = "sh",
167 : [ARCHITECTURE_SH64] = "sh64",
168 : [ARCHITECTURE_M68K] = "m68k",
169 : [ARCHITECTURE_TILEGX] = "tilegx",
170 : [ARCHITECTURE_CRIS] = "cris",
171 : [ARCHITECTURE_NIOS2] = "nios2",
172 : [ARCHITECTURE_RISCV32] = "riscv32",
173 : [ARCHITECTURE_RISCV64] = "riscv64",
174 : [ARCHITECTURE_ARC] = "arc",
175 : [ARCHITECTURE_ARC_BE] = "arc-be",
176 : };
177 :
178 99 : DEFINE_STRING_TABLE_LOOKUP(architecture, int);
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