Branch data 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 : 20 : 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 [ + + ]: 20 : if (cached != _ARCHITECTURE_INVALID)
131 : 12 : return cached;
132 : :
133 [ - + ]: 8 : assert_se(uname(&u) >= 0);
134 : :
135 [ + - ]: 8 : for (i = 0; i < ELEMENTSOF(arch_map); i++)
136 [ + - ]: 8 : if (streq(arch_map[i].machine, u.machine))
137 : 8 : 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 [ + + + + ]: 396 : DEFINE_STRING_TABLE_LOOKUP(architecture, int);
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