/src/botan/src/lib/utils/cpuid/cpuid.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Runtime CPU detection |
3 | | * (C) 2009,2010,2013,2017 Jack Lloyd |
4 | | * |
5 | | * Botan is released under the Simplified BSD License (see license.txt) |
6 | | */ |
7 | | |
8 | | #include <botan/internal/cpuid.h> |
9 | | #include <botan/types.h> |
10 | | #include <botan/exceptn.h> |
11 | | #include <botan/internal/parsing.h> |
12 | | #include <botan/internal/os_utils.h> |
13 | | #include <ostream> |
14 | | |
15 | | namespace Botan { |
16 | | |
17 | | bool CPUID::has_simd_32() |
18 | 0 | { |
19 | 0 | #if defined(BOTAN_TARGET_SUPPORTS_SSE2) |
20 | 0 | return CPUID::has_sse2(); |
21 | | #elif defined(BOTAN_TARGET_SUPPORTS_ALTIVEC) |
22 | | return CPUID::has_altivec(); |
23 | | #elif defined(BOTAN_TARGET_SUPPORTS_NEON) |
24 | | return CPUID::has_neon(); |
25 | | #else |
26 | | return true; |
27 | | #endif |
28 | 0 | } |
29 | | |
30 | | //static |
31 | | std::string CPUID::to_string() |
32 | 0 | { |
33 | 0 | std::vector<std::string> flags; |
34 | |
|
35 | 0 | #define CPUID_PRINT(flag) do { if(has_##flag()) { flags.push_back(#flag); } } while(0) |
36 | |
|
37 | 0 | #if defined(BOTAN_TARGET_CPU_IS_X86_FAMILY) |
38 | 0 | CPUID_PRINT(sse2); |
39 | 0 | CPUID_PRINT(ssse3); |
40 | 0 | CPUID_PRINT(sse41); |
41 | 0 | CPUID_PRINT(sse42); |
42 | 0 | CPUID_PRINT(avx2); |
43 | 0 | CPUID_PRINT(avx512f); |
44 | 0 | CPUID_PRINT(avx512dq); |
45 | 0 | CPUID_PRINT(avx512bw); |
46 | 0 | CPUID_PRINT(avx512_icelake); |
47 | |
|
48 | 0 | CPUID_PRINT(rdtsc); |
49 | 0 | CPUID_PRINT(bmi1); |
50 | 0 | CPUID_PRINT(bmi2); |
51 | 0 | CPUID_PRINT(adx); |
52 | |
|
53 | 0 | CPUID_PRINT(aes_ni); |
54 | 0 | CPUID_PRINT(clmul); |
55 | 0 | CPUID_PRINT(rdrand); |
56 | 0 | CPUID_PRINT(rdseed); |
57 | 0 | CPUID_PRINT(intel_sha); |
58 | 0 | CPUID_PRINT(avx512_aes); |
59 | 0 | CPUID_PRINT(avx512_clmul); |
60 | 0 | #endif |
61 | |
|
62 | | #if defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY) |
63 | | CPUID_PRINT(altivec); |
64 | | CPUID_PRINT(power_crypto); |
65 | | CPUID_PRINT(darn_rng); |
66 | | #endif |
67 | |
|
68 | | #if defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) |
69 | | CPUID_PRINT(neon); |
70 | | CPUID_PRINT(arm_sve); |
71 | | |
72 | | CPUID_PRINT(arm_sha1); |
73 | | CPUID_PRINT(arm_sha2); |
74 | | CPUID_PRINT(arm_aes); |
75 | | CPUID_PRINT(arm_pmull); |
76 | | CPUID_PRINT(arm_sha2_512); |
77 | | CPUID_PRINT(arm_sha3); |
78 | | CPUID_PRINT(arm_sm3); |
79 | | CPUID_PRINT(arm_sm4); |
80 | | #endif |
81 | |
|
82 | 0 | #undef CPUID_PRINT |
83 | |
|
84 | 0 | return string_join(flags, ' '); |
85 | 0 | } |
86 | | |
87 | | //static |
88 | | void CPUID::initialize() |
89 | 0 | { |
90 | 0 | state() = CPUID_Data(); |
91 | 0 | } |
92 | | |
93 | | CPUID::CPUID_Data::CPUID_Data() |
94 | 11 | { |
95 | 11 | m_cache_line_size = 0; |
96 | 11 | m_processor_features = 0; |
97 | | |
98 | 11 | #if defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY) || \ |
99 | 11 | defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) || \ |
100 | 11 | defined(BOTAN_TARGET_CPU_IS_X86_FAMILY) |
101 | | |
102 | 11 | m_processor_features = detect_cpu_features(&m_cache_line_size); |
103 | | |
104 | 11 | #endif |
105 | | |
106 | 11 | m_processor_features |= CPUID::CPUID_INITIALIZED_BIT; |
107 | | |
108 | 11 | if(m_cache_line_size == 0) |
109 | 0 | { |
110 | 0 | m_cache_line_size = OS::get_cache_line_size(); |
111 | 0 | if(m_cache_line_size == 0) |
112 | 0 | m_cache_line_size = BOTAN_TARGET_CPU_DEFAULT_CACHE_LINE_SIZE; |
113 | 0 | } |
114 | | |
115 | 11 | m_endian_status = runtime_check_endian(); |
116 | 11 | } |
117 | | |
118 | | //static |
119 | | CPUID::Endian_Status CPUID::CPUID_Data::runtime_check_endian() |
120 | 11 | { |
121 | | // Check runtime endian |
122 | 11 | const uint32_t endian32 = 0x01234567; |
123 | 11 | const uint8_t* e8 = reinterpret_cast<const uint8_t*>(&endian32); |
124 | | |
125 | 11 | CPUID::Endian_Status endian = CPUID::Endian_Status::Unknown; |
126 | | |
127 | 11 | if(e8[0] == 0x01 && e8[1] == 0x23 && e8[2] == 0x45 && e8[3] == 0x67) |
128 | 0 | { |
129 | 0 | endian = CPUID::Endian_Status::Big; |
130 | 0 | } |
131 | 11 | else if(e8[0] == 0x67 && e8[1] == 0x45 && e8[2] == 0x23 && e8[3] == 0x01) |
132 | 11 | { |
133 | 11 | endian = CPUID::Endian_Status::Little; |
134 | 11 | } |
135 | 0 | else |
136 | 0 | { |
137 | 0 | throw Internal_Error("Unexpected endian at runtime, neither big nor little"); |
138 | 0 | } |
139 | | |
140 | | // If we were compiled with a known endian, verify it matches at runtime |
141 | 11 | #if defined(BOTAN_TARGET_CPU_IS_LITTLE_ENDIAN) |
142 | 11 | BOTAN_ASSERT(endian == CPUID::Endian_Status::Little, "Build and runtime endian match"); |
143 | | #elif defined(BOTAN_TARGET_CPU_IS_BIG_ENDIAN) |
144 | | BOTAN_ASSERT(endian == CPUID::Endian_Status::Big, "Build and runtime endian match"); |
145 | | #endif |
146 | | |
147 | 11 | return endian; |
148 | 11 | } |
149 | | |
150 | | std::vector<Botan::CPUID::CPUID_bits> |
151 | | CPUID::bit_from_string(const std::string& tok) |
152 | 0 | { |
153 | 0 | #if defined(BOTAN_TARGET_CPU_IS_X86_FAMILY) |
154 | 0 | if(tok == "sse2" || tok == "simd") |
155 | 0 | return {Botan::CPUID::CPUID_SSE2_BIT}; |
156 | 0 | if(tok == "ssse3") |
157 | 0 | return {Botan::CPUID::CPUID_SSSE3_BIT}; |
158 | 0 | if(tok == "sse41") |
159 | 0 | return {Botan::CPUID::CPUID_SSE41_BIT}; |
160 | 0 | if(tok == "sse42") |
161 | 0 | return {Botan::CPUID::CPUID_SSE42_BIT}; |
162 | | // aes_ni is the string printed on the console when running "botan cpuid" |
163 | 0 | if(tok == "aesni" || tok == "aes_ni") |
164 | 0 | return {Botan::CPUID::CPUID_AESNI_BIT}; |
165 | 0 | if(tok == "clmul") |
166 | 0 | return {Botan::CPUID::CPUID_CLMUL_BIT}; |
167 | 0 | if(tok == "avx2") |
168 | 0 | return {Botan::CPUID::CPUID_AVX2_BIT}; |
169 | 0 | if(tok == "avx512f") |
170 | 0 | return {Botan::CPUID::CPUID_AVX512F_BIT}; |
171 | 0 | if(tok == "avx512_icelake") |
172 | 0 | return {Botan::CPUID::CPUID_AVX512_ICL_BIT}; |
173 | | // there were two if statements testing "sha" and "intel_sha" separately; combined |
174 | 0 | if(tok == "sha" || tok=="intel_sha") |
175 | 0 | return {Botan::CPUID::CPUID_SHA_BIT}; |
176 | 0 | if(tok == "rdtsc") |
177 | 0 | return {Botan::CPUID::CPUID_RDTSC_BIT}; |
178 | 0 | if(tok == "bmi1") |
179 | 0 | return {Botan::CPUID::CPUID_BMI1_BIT}; |
180 | 0 | if(tok == "bmi2") |
181 | 0 | return {Botan::CPUID::CPUID_BMI2_BIT}; |
182 | 0 | if(tok == "adx") |
183 | 0 | return {Botan::CPUID::CPUID_ADX_BIT}; |
184 | 0 | if(tok == "rdrand") |
185 | 0 | return {Botan::CPUID::CPUID_RDRAND_BIT}; |
186 | 0 | if(tok == "rdseed") |
187 | 0 | return {Botan::CPUID::CPUID_RDSEED_BIT}; |
188 | 0 | if(tok == "avx512_aes") |
189 | 0 | return {Botan::CPUID::CPUID_AVX512_AES_BIT}; |
190 | 0 | if(tok == "avx512_clmul") |
191 | 0 | return {Botan::CPUID::CPUID_AVX512_CLMUL_BIT}; |
192 | | |
193 | | #elif defined(BOTAN_TARGET_CPU_IS_PPC_FAMILY) |
194 | | if(tok == "altivec" || tok == "simd") |
195 | | return {Botan::CPUID::CPUID_ALTIVEC_BIT}; |
196 | | if(tok == "power_crypto") |
197 | | return {Botan::CPUID::CPUID_POWER_CRYPTO_BIT}; |
198 | | if(tok == "darn_rng") |
199 | | return {Botan::CPUID::CPUID_DARN_BIT}; |
200 | | |
201 | | #elif defined(BOTAN_TARGET_CPU_IS_ARM_FAMILY) |
202 | | if(tok == "neon" || tok == "simd") |
203 | | return {Botan::CPUID::CPUID_ARM_NEON_BIT}; |
204 | | if(tok == "arm_sve") |
205 | | return {Botan::CPUID::CPUID_ARM_SVE_BIT}; |
206 | | if(tok == "armv8sha1" || tok == "arm_sha1") |
207 | | return {Botan::CPUID::CPUID_ARM_SHA1_BIT}; |
208 | | if(tok == "armv8sha2" || tok == "arm_sha2") |
209 | | return {Botan::CPUID::CPUID_ARM_SHA2_BIT}; |
210 | | if(tok == "armv8aes" || tok == "arm_aes") |
211 | | return {Botan::CPUID::CPUID_ARM_AES_BIT}; |
212 | | if(tok == "armv8pmull" || tok == "arm_pmull") |
213 | | return {Botan::CPUID::CPUID_ARM_PMULL_BIT}; |
214 | | if(tok == "armv8sha3" || tok == "arm_sha3") |
215 | | return {Botan::CPUID::CPUID_ARM_SHA3_BIT}; |
216 | | if(tok == "armv8sha2_512" || tok == "arm_sha2_512") |
217 | | return {Botan::CPUID::CPUID_ARM_SHA2_512_BIT}; |
218 | | if(tok == "armv8sm3" || tok == "arm_sm3") |
219 | | return {Botan::CPUID::CPUID_ARM_SM3_BIT}; |
220 | | if(tok == "armv8sm4" || tok == "arm_sm4") |
221 | | return {Botan::CPUID::CPUID_ARM_SM4_BIT}; |
222 | | |
223 | | #else |
224 | | BOTAN_UNUSED(tok); |
225 | | #endif |
226 | | |
227 | 0 | return {}; |
228 | 0 | } |
229 | | |
230 | | } |