]>
Commit | Line | Data |
---|---|---|
b1322259 | 1 | /* |
4333b89f | 2 | * Copyright 2009-2021 The OpenSSL Project Authors. All Rights Reserved. |
b1322259 | 3 | * |
0e9725bc | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
b1322259 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
b4b48a10 AP |
10 | #include <stdio.h> |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include <setjmp.h> | |
14 | #include <signal.h> | |
fd054957 | 15 | #include <unistd.h> |
d5630dd6 | 16 | #if defined(__linux) || defined(_AIX) |
0f113f3e | 17 | # include <sys/utsname.h> |
78c3e205 | 18 | #endif |
2688d999 AP |
19 | #if defined(_AIX53) /* defined even on post-5.3 */ |
20 | # include <sys/systemcfg.h> | |
21 | # if !defined(__power_set) | |
22 | # define __power_set(a) (_system_configuration.implementation & (a)) | |
23 | # endif | |
24 | #endif | |
0bd93bbe AP |
25 | #if defined(__APPLE__) && defined(__MACH__) |
26 | # include <sys/types.h> | |
27 | # include <sys/sysctl.h> | |
28 | #endif | |
11252459 | 29 | #include <openssl/crypto.h> |
449bdf37 | 30 | #include "internal/cryptlib.h" |
3d178db7 | 31 | #include "crypto/ppc_arch.h" |
b4b48a10 | 32 | |
07f3e4f3 | 33 | unsigned int OPENSSL_ppccap_P = 0; |
b4b48a10 AP |
34 | |
35 | static sigset_t all_masked; | |
36 | ||
b4b48a10 | 37 | static sigjmp_buf ill_jmp; |
0f113f3e MC |
38 | static void ill_handler(int sig) |
39 | { | |
40 | siglongjmp(ill_jmp, sig); | |
41 | } | |
b4b48a10 | 42 | |
2688d999 | 43 | void OPENSSL_fpu_probe(void); |
70b76d39 | 44 | void OPENSSL_ppc64_probe(void); |
fd054957 | 45 | void OPENSSL_altivec_probe(void); |
de51e830 | 46 | void OPENSSL_crypto207_probe(void); |
53385e1f | 47 | void OPENSSL_madd300_probe(void); |
70b76d39 | 48 | |
c8f37048 BE |
49 | long OPENSSL_rdtsc_mftb(void); |
50 | long OPENSSL_rdtsc_mfspr268(void); | |
51 | ||
52 | uint32_t OPENSSL_rdtsc(void) | |
53 | { | |
54 | if (OPENSSL_ppccap_P & PPC_MFTB) | |
55 | return OPENSSL_rdtsc_mftb(); | |
56 | else if (OPENSSL_ppccap_P & PPC_MFSPR268) | |
57 | return OPENSSL_rdtsc_mfspr268(); | |
58 | else | |
59 | return 0; | |
60 | } | |
61 | ||
62 | size_t OPENSSL_instrument_bus_mftb(unsigned int *, size_t); | |
63 | size_t OPENSSL_instrument_bus_mfspr268(unsigned int *, size_t); | |
64 | ||
65 | size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt) | |
66 | { | |
67 | if (OPENSSL_ppccap_P & PPC_MFTB) | |
68 | return OPENSSL_instrument_bus_mftb(out, cnt); | |
69 | else if (OPENSSL_ppccap_P & PPC_MFSPR268) | |
70 | return OPENSSL_instrument_bus_mfspr268(out, cnt); | |
71 | else | |
72 | return 0; | |
73 | } | |
74 | ||
75 | size_t OPENSSL_instrument_bus2_mftb(unsigned int *, size_t, size_t); | |
76 | size_t OPENSSL_instrument_bus2_mfspr268(unsigned int *, size_t, size_t); | |
77 | ||
78 | size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max) | |
79 | { | |
80 | if (OPENSSL_ppccap_P & PPC_MFTB) | |
81 | return OPENSSL_instrument_bus2_mftb(out, cnt, max); | |
82 | else if (OPENSSL_ppccap_P & PPC_MFSPR268) | |
83 | return OPENSSL_instrument_bus2_mfspr268(out, cnt, max); | |
84 | else | |
85 | return 0; | |
86 | } | |
87 | ||
5f40dd15 RL |
88 | #if defined(__GLIBC__) && defined(__GLIBC_PREREQ) |
89 | # if __GLIBC_PREREQ(2, 16) | |
90 | # include <sys/auxv.h> | |
91 | # define OSSL_IMPLEMENT_GETAUXVAL | |
d5567d5f | 92 | # elif defined(__ANDROID_API__) |
93 | /* see https://developer.android.google.cn/ndk/guides/cpu-features */ | |
94 | # if __ANDROID_API__ >= 18 | |
95 | # include <sys/auxv.h> | |
96 | # define OSSL_IMPLEMENT_GETAUXVAL | |
97 | # endif | |
5f40dd15 | 98 | # endif |
2688d999 AP |
99 | #endif |
100 | ||
b57ec739 DC |
101 | #if defined(__FreeBSD__) |
102 | # include <sys/param.h> | |
103 | # if __FreeBSD_version >= 1200000 | |
104 | # include <sys/auxv.h> | |
105 | # define OSSL_IMPLEMENT_GETAUXVAL | |
106 | ||
107 | static unsigned long getauxval(unsigned long key) | |
108 | { | |
109 | unsigned long val = 0ul; | |
110 | ||
111 | if (elf_aux_info((int)key, &val, sizeof(val)) != 0) | |
112 | return 0ul; | |
113 | ||
114 | return val; | |
115 | } | |
116 | # endif | |
117 | #endif | |
118 | ||
2688d999 AP |
119 | /* I wish <sys/auxv.h> was universally available */ |
120 | #define HWCAP 16 /* AT_HWCAP */ | |
121 | #define HWCAP_PPC64 (1U << 30) | |
122 | #define HWCAP_ALTIVEC (1U << 28) | |
123 | #define HWCAP_FPU (1U << 27) | |
124 | #define HWCAP_POWER6_EXT (1U << 9) | |
125 | #define HWCAP_VSX (1U << 7) | |
126 | ||
127 | #define HWCAP2 26 /* AT_HWCAP2 */ | |
128 | #define HWCAP_VEC_CRYPTO (1U << 25) | |
e0e53282 | 129 | #define HWCAP_ARCH_3_00 (1U << 23) |
2688d999 AP |
130 | |
131 | # if defined(__GNUC__) && __GNUC__>=2 | |
132 | __attribute__ ((constructor)) | |
133 | # endif | |
b4b48a10 | 134 | void OPENSSL_cpuid_setup(void) |
0f113f3e MC |
135 | { |
136 | char *e; | |
137 | struct sigaction ill_oact, ill_act; | |
138 | sigset_t oset; | |
139 | static int trigger = 0; | |
140 | ||
141 | if (trigger) | |
142 | return; | |
143 | trigger = 1; | |
144 | ||
0f113f3e MC |
145 | if ((e = getenv("OPENSSL_ppccap"))) { |
146 | OPENSSL_ppccap_P = strtoul(e, NULL, 0); | |
147 | return; | |
148 | } | |
b4b48a10 | 149 | |
0f113f3e | 150 | OPENSSL_ppccap_P = 0; |
6415dd7b | 151 | |
fd054957 | 152 | #if defined(_AIX) |
2688d999 AP |
153 | OPENSSL_ppccap_P |= PPC_FPU; |
154 | ||
0f113f3e MC |
155 | if (sizeof(size_t) == 4) { |
156 | struct utsname uts; | |
fd054957 | 157 | # if defined(_SC_AIX_KERNEL_BITMODE) |
0f113f3e MC |
158 | if (sysconf(_SC_AIX_KERNEL_BITMODE) != 64) |
159 | return; | |
fd054957 | 160 | # endif |
0f113f3e MC |
161 | if (uname(&uts) != 0 || atoi(uts.version) < 6) |
162 | return; | |
163 | } | |
2688d999 AP |
164 | |
165 | # if defined(__power_set) | |
166 | /* | |
167 | * Value used in __power_set is a single-bit 1<<n one denoting | |
168 | * specific processor class. Incidentally 0xffffffff<<n can be | |
169 | * used to denote specific processor and its successors. | |
170 | */ | |
171 | if (sizeof(size_t) == 4) { | |
172 | /* In 32-bit case PPC_FPU64 is always fastest [if option] */ | |
173 | if (__power_set(0xffffffffU<<13)) /* POWER5 and later */ | |
174 | OPENSSL_ppccap_P |= PPC_FPU64; | |
175 | } else { | |
176 | /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */ | |
177 | if (__power_set(0x1U<<14)) /* POWER6 */ | |
178 | OPENSSL_ppccap_P |= PPC_FPU64; | |
179 | } | |
180 | ||
181 | if (__power_set(0xffffffffU<<14)) /* POWER6 and later */ | |
182 | OPENSSL_ppccap_P |= PPC_ALTIVEC; | |
183 | ||
184 | if (__power_set(0xffffffffU<<16)) /* POWER8 and later */ | |
185 | OPENSSL_ppccap_P |= PPC_CRYPTO207; | |
186 | ||
e0e53282 AP |
187 | if (__power_set(0xffffffffU<<17)) /* POWER9 and later */ |
188 | OPENSSL_ppccap_P |= PPC_MADD300; | |
189 | ||
2688d999 AP |
190 | return; |
191 | # endif | |
192 | #endif | |
193 | ||
0bd93bbe AP |
194 | #if defined(__APPLE__) && defined(__MACH__) |
195 | OPENSSL_ppccap_P |= PPC_FPU; | |
196 | ||
197 | { | |
198 | int val; | |
199 | size_t len = sizeof(val); | |
200 | ||
201 | if (sysctlbyname("hw.optional.64bitops", &val, &len, NULL, 0) == 0) { | |
202 | if (val) | |
203 | OPENSSL_ppccap_P |= PPC_FPU64; | |
204 | } | |
205 | ||
206 | len = sizeof(val); | |
207 | if (sysctlbyname("hw.optional.altivec", &val, &len, NULL, 0) == 0) { | |
208 | if (val) | |
209 | OPENSSL_ppccap_P |= PPC_ALTIVEC; | |
210 | } | |
211 | ||
212 | return; | |
213 | } | |
214 | #endif | |
215 | ||
5f40dd15 RL |
216 | #ifdef OSSL_IMPLEMENT_GETAUXVAL |
217 | { | |
2688d999 | 218 | unsigned long hwcap = getauxval(HWCAP); |
99592c73 | 219 | unsigned long hwcap2 = getauxval(HWCAP2); |
2688d999 AP |
220 | |
221 | if (hwcap & HWCAP_FPU) { | |
dccd20d1 | 222 | OPENSSL_ppccap_P |= PPC_FPU; |
2688d999 AP |
223 | |
224 | if (sizeof(size_t) == 4) { | |
225 | /* In 32-bit case PPC_FPU64 is always fastest [if option] */ | |
226 | if (hwcap & HWCAP_PPC64) | |
227 | OPENSSL_ppccap_P |= PPC_FPU64; | |
228 | } else { | |
229 | /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */ | |
230 | if (hwcap & HWCAP_POWER6_EXT) | |
231 | OPENSSL_ppccap_P |= PPC_FPU64; | |
232 | } | |
233 | } | |
234 | ||
235 | if (hwcap & HWCAP_ALTIVEC) { | |
236 | OPENSSL_ppccap_P |= PPC_ALTIVEC; | |
237 | ||
99592c73 | 238 | if ((hwcap & HWCAP_VSX) && (hwcap2 & HWCAP_VEC_CRYPTO)) |
2688d999 AP |
239 | OPENSSL_ppccap_P |= PPC_CRYPTO207; |
240 | } | |
241 | ||
99592c73 | 242 | if (hwcap2 & HWCAP_ARCH_3_00) { |
e0e53282 AP |
243 | OPENSSL_ppccap_P |= PPC_MADD300; |
244 | } | |
2688d999 | 245 | } |
5f40dd15 | 246 | #endif |
2688d999 AP |
247 | |
248 | sigfillset(&all_masked); | |
249 | sigdelset(&all_masked, SIGILL); | |
250 | sigdelset(&all_masked, SIGTRAP); | |
251 | #ifdef SIGEMT | |
252 | sigdelset(&all_masked, SIGEMT); | |
fd054957 | 253 | #endif |
2688d999 AP |
254 | sigdelset(&all_masked, SIGFPE); |
255 | sigdelset(&all_masked, SIGBUS); | |
256 | sigdelset(&all_masked, SIGSEGV); | |
fd054957 | 257 | |
0f113f3e MC |
258 | memset(&ill_act, 0, sizeof(ill_act)); |
259 | ill_act.sa_handler = ill_handler; | |
260 | ill_act.sa_mask = all_masked; | |
6415dd7b | 261 | |
0f113f3e MC |
262 | sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset); |
263 | sigaction(SIGILL, &ill_act, &ill_oact); | |
6415dd7b | 264 | |
c8f37048 | 265 | #ifndef OSSL_IMPLEMENT_GETAUXVAL |
1287dabd | 266 | if (sigsetjmp(ill_jmp, 1) == 0) { |
2688d999 AP |
267 | OPENSSL_fpu_probe(); |
268 | OPENSSL_ppccap_P |= PPC_FPU; | |
269 | ||
270 | if (sizeof(size_t) == 4) { | |
c8f37048 | 271 | # ifdef __linux |
2688d999 AP |
272 | struct utsname uts; |
273 | if (uname(&uts) == 0 && strcmp(uts.machine, "ppc64") == 0) | |
c8f37048 | 274 | # endif |
2688d999 AP |
275 | if (sigsetjmp(ill_jmp, 1) == 0) { |
276 | OPENSSL_ppc64_probe(); | |
277 | OPENSSL_ppccap_P |= PPC_FPU64; | |
278 | } | |
279 | } else { | |
280 | /* | |
281 | * Wanted code detecting POWER6 CPU and setting PPC_FPU64 | |
282 | */ | |
283 | } | |
0f113f3e MC |
284 | } |
285 | ||
286 | if (sigsetjmp(ill_jmp, 1) == 0) { | |
287 | OPENSSL_altivec_probe(); | |
288 | OPENSSL_ppccap_P |= PPC_ALTIVEC; | |
289 | if (sigsetjmp(ill_jmp, 1) == 0) { | |
290 | OPENSSL_crypto207_probe(); | |
291 | OPENSSL_ppccap_P |= PPC_CRYPTO207; | |
292 | } | |
293 | } | |
294 | ||
e0e53282 AP |
295 | if (sigsetjmp(ill_jmp, 1) == 0) { |
296 | OPENSSL_madd300_probe(); | |
297 | OPENSSL_ppccap_P |= PPC_MADD300; | |
298 | } | |
c8f37048 BE |
299 | #endif |
300 | ||
301 | if (sigsetjmp(ill_jmp, 1) == 0) { | |
302 | OPENSSL_rdtsc_mftb(); | |
303 | OPENSSL_ppccap_P |= PPC_MFTB; | |
304 | } else if (sigsetjmp(ill_jmp, 1) == 0) { | |
305 | OPENSSL_rdtsc_mfspr268(); | |
306 | OPENSSL_ppccap_P |= PPC_MFSPR268; | |
307 | } | |
e0e53282 | 308 | |
0f113f3e MC |
309 | sigaction(SIGILL, &ill_oact, NULL); |
310 | sigprocmask(SIG_SETMASK, &oset, NULL); | |
311 | } |