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source: vbox/trunk/src/libs/openssl-1.1.0g/crypto/ppccap.c@ 69890

Last change on this file since 69890 was 69890, checked in by vboxsync, 7 years ago

Added OpenSSL 1.1.0g with unneeded files removed, otherwise unmodified.
bugref:8070: src/libs maintenance
  • Property svn:eol-style set to native
File size: 10.5 KB
Line 
1/*
2 * Copyright 2009-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
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
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include <setjmp.h>
14#include <signal.h>
15#include <unistd.h>
16#if defined(__linux) || defined(_AIX)
17# include <sys/utsname.h>
18#endif
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
25#if defined(__APPLE__) && defined(__MACH__)
26# include <sys/types.h>
27# include <sys/sysctl.h>
28#endif
29#include <openssl/crypto.h>
30#include <openssl/bn.h>
31
32#include "ppc_arch.h"
33
34unsigned int OPENSSL_ppccap_P = 0;
35
36static sigset_t all_masked;
37
38#ifdef OPENSSL_BN_ASM_MONT
39int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
40 const BN_ULONG *np, const BN_ULONG *n0, int num)
41{
42 int bn_mul_mont_fpu64(BN_ULONG *rp, const BN_ULONG *ap,
43 const BN_ULONG *bp, const BN_ULONG *np,
44 const BN_ULONG *n0, int num);
45 int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
46 const BN_ULONG *np, const BN_ULONG *n0, int num);
47
48 if (sizeof(size_t) == 4) {
49# if 1 || (defined(__APPLE__) && defined(__MACH__))
50 if (num >= 8 && (num & 3) == 0 && (OPENSSL_ppccap_P & PPC_FPU64))
51 return bn_mul_mont_fpu64(rp, ap, bp, np, n0, num);
52# else
53 /*
54 * boundary of 32 was experimentally determined on Linux 2.6.22,
55 * might have to be adjusted on AIX...
56 */
57 if (num >= 32 && (num & 3) == 0 && (OPENSSL_ppccap_P & PPC_FPU64)) {
58 sigset_t oset;
59 int ret;
60
61 sigprocmask(SIG_SETMASK, &all_masked, &oset);
62 ret = bn_mul_mont_fpu64(rp, ap, bp, np, n0, num);
63 sigprocmask(SIG_SETMASK, &oset, NULL);
64
65 return ret;
66 }
67# endif
68 } else if ((OPENSSL_ppccap_P & PPC_FPU64))
69 /*
70 * this is a "must" on POWER6, but run-time detection is not
71 * implemented yet...
72 */
73 return bn_mul_mont_fpu64(rp, ap, bp, np, n0, num);
74
75 return bn_mul_mont_int(rp, ap, bp, np, n0, num);
76}
77#endif
78
79void sha256_block_p8(void *ctx, const void *inp, size_t len);
80void sha256_block_ppc(void *ctx, const void *inp, size_t len);
81void sha256_block_data_order(void *ctx, const void *inp, size_t len)
82{
83 OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha256_block_p8(ctx, inp, len) :
84 sha256_block_ppc(ctx, inp, len);
85}
86
87void sha512_block_p8(void *ctx, const void *inp, size_t len);
88void sha512_block_ppc(void *ctx, const void *inp, size_t len);
89void sha512_block_data_order(void *ctx, const void *inp, size_t len)
90{
91 OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha512_block_p8(ctx, inp, len) :
92 sha512_block_ppc(ctx, inp, len);
93}
94
95#ifndef OPENSSL_NO_CHACHA
96void ChaCha20_ctr32_int(unsigned char *out, const unsigned char *inp,
97 size_t len, const unsigned int key[8],
98 const unsigned int counter[4]);
99void ChaCha20_ctr32_vmx(unsigned char *out, const unsigned char *inp,
100 size_t len, const unsigned int key[8],
101 const unsigned int counter[4]);
102void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp,
103 size_t len, const unsigned int key[8],
104 const unsigned int counter[4])
105{
106 OPENSSL_ppccap_P & PPC_ALTIVEC
107 ? ChaCha20_ctr32_vmx(out, inp, len, key, counter)
108 : ChaCha20_ctr32_int(out, inp, len, key, counter);
109}
110#endif
111
112#ifndef OPENSSL_NO_POLY1305
113void poly1305_init_int(void *ctx, const unsigned char key[16]);
114void poly1305_blocks(void *ctx, const unsigned char *inp, size_t len,
115 unsigned int padbit);
116void poly1305_emit(void *ctx, unsigned char mac[16],
117 const unsigned int nonce[4]);
118void poly1305_init_fpu(void *ctx, const unsigned char key[16]);
119void poly1305_blocks_fpu(void *ctx, const unsigned char *inp, size_t len,
120 unsigned int padbit);
121void poly1305_emit_fpu(void *ctx, unsigned char mac[16],
122 const unsigned int nonce[4]);
123int poly1305_init(void *ctx, const unsigned char key[16], void *func[2])
124{
125 if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P & PPC_FPU)) {
126 poly1305_init_fpu(ctx, key);
127 func[0] = poly1305_blocks_fpu;
128 func[1] = poly1305_emit_fpu;
129 } else {
130 poly1305_init_int(ctx, key);
131 func[0] = poly1305_blocks;
132 func[1] = poly1305_emit;
133 }
134 return 1;
135}
136#endif
137
138static sigjmp_buf ill_jmp;
139static void ill_handler(int sig)
140{
141 siglongjmp(ill_jmp, sig);
142}
143
144void OPENSSL_fpu_probe(void);
145void OPENSSL_ppc64_probe(void);
146void OPENSSL_altivec_probe(void);
147void OPENSSL_crypto207_probe(void);
148void OPENSSL_madd300_probe(void);
149
150/*
151 * Use a weak reference to getauxval() so we can use it if it is available
152 * but don't break the build if it is not. Note that this is *link-time*
153 * feature detection, not *run-time*. In other words if we link with
154 * symbol present, it's expected to be present even at run-time.
155 */
156#if defined(__GNUC__) && __GNUC__>=2 && defined(__ELF__)
157extern unsigned long getauxval(unsigned long type) __attribute__ ((weak));
158#else
159static unsigned long (*getauxval) (unsigned long) = NULL;
160#endif
161
162/* I wish <sys/auxv.h> was universally available */
163#define HWCAP 16 /* AT_HWCAP */
164#define HWCAP_PPC64 (1U << 30)
165#define HWCAP_ALTIVEC (1U << 28)
166#define HWCAP_FPU (1U << 27)
167#define HWCAP_POWER6_EXT (1U << 9)
168#define HWCAP_VSX (1U << 7)
169
170#define HWCAP2 26 /* AT_HWCAP2 */
171#define HWCAP_VEC_CRYPTO (1U << 25)
172#define HWCAP_ARCH_3_00 (1U << 23)
173
174# if defined(__GNUC__) && __GNUC__>=2
175__attribute__ ((constructor))
176# endif
177void OPENSSL_cpuid_setup(void)
178{
179 char *e;
180 struct sigaction ill_oact, ill_act;
181 sigset_t oset;
182 static int trigger = 0;
183
184 if (trigger)
185 return;
186 trigger = 1;
187
188 if ((e = getenv("OPENSSL_ppccap"))) {
189 OPENSSL_ppccap_P = strtoul(e, NULL, 0);
190 return;
191 }
192
193 OPENSSL_ppccap_P = 0;
194
195#if defined(_AIX)
196 OPENSSL_ppccap_P |= PPC_FPU;
197
198 if (sizeof(size_t) == 4) {
199 struct utsname uts;
200# if defined(_SC_AIX_KERNEL_BITMODE)
201 if (sysconf(_SC_AIX_KERNEL_BITMODE) != 64)
202 return;
203# endif
204 if (uname(&uts) != 0 || atoi(uts.version) < 6)
205 return;
206 }
207
208# if defined(__power_set)
209 /*
210 * Value used in __power_set is a single-bit 1<<n one denoting
211 * specific processor class. Incidentally 0xffffffff<<n can be
212 * used to denote specific processor and its successors.
213 */
214 if (sizeof(size_t) == 4) {
215 /* In 32-bit case PPC_FPU64 is always fastest [if option] */
216 if (__power_set(0xffffffffU<<13)) /* POWER5 and later */
217 OPENSSL_ppccap_P |= PPC_FPU64;
218 } else {
219 /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */
220 if (__power_set(0x1U<<14)) /* POWER6 */
221 OPENSSL_ppccap_P |= PPC_FPU64;
222 }
223
224 if (__power_set(0xffffffffU<<14)) /* POWER6 and later */
225 OPENSSL_ppccap_P |= PPC_ALTIVEC;
226
227 if (__power_set(0xffffffffU<<16)) /* POWER8 and later */
228 OPENSSL_ppccap_P |= PPC_CRYPTO207;
229
230 if (__power_set(0xffffffffU<<17)) /* POWER9 and later */
231 OPENSSL_ppccap_P |= PPC_MADD300;
232
233 return;
234# endif
235#endif
236
237#if defined(__APPLE__) && defined(__MACH__)
238 OPENSSL_ppccap_P |= PPC_FPU;
239
240 {
241 int val;
242 size_t len = sizeof(val);
243
244 if (sysctlbyname("hw.optional.64bitops", &val, &len, NULL, 0) == 0) {
245 if (val)
246 OPENSSL_ppccap_P |= PPC_FPU64;
247 }
248
249 len = sizeof(val);
250 if (sysctlbyname("hw.optional.altivec", &val, &len, NULL, 0) == 0) {
251 if (val)
252 OPENSSL_ppccap_P |= PPC_ALTIVEC;
253 }
254
255 return;
256 }
257#endif
258
259 if (getauxval != NULL) {
260 unsigned long hwcap = getauxval(HWCAP);
261
262 if (hwcap & HWCAP_FPU) {
263 OPENSSL_ppccap_P |= PPC_FPU;
264
265 if (sizeof(size_t) == 4) {
266 /* In 32-bit case PPC_FPU64 is always fastest [if option] */
267 if (hwcap & HWCAP_PPC64)
268 OPENSSL_ppccap_P |= PPC_FPU64;
269 } else {
270 /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */
271 if (hwcap & HWCAP_POWER6_EXT)
272 OPENSSL_ppccap_P |= PPC_FPU64;
273 }
274 }
275
276 if (hwcap & HWCAP_ALTIVEC) {
277 OPENSSL_ppccap_P |= PPC_ALTIVEC;
278
279 if ((hwcap & HWCAP_VSX) && (getauxval(HWCAP2) & HWCAP_VEC_CRYPTO))
280 OPENSSL_ppccap_P |= PPC_CRYPTO207;
281 }
282
283 if (hwcap & HWCAP_ARCH_3_00) {
284 OPENSSL_ppccap_P |= PPC_MADD300;
285 }
286
287 return;
288 }
289
290 sigfillset(&all_masked);
291 sigdelset(&all_masked, SIGILL);
292 sigdelset(&all_masked, SIGTRAP);
293#ifdef SIGEMT
294 sigdelset(&all_masked, SIGEMT);
295#endif
296 sigdelset(&all_masked, SIGFPE);
297 sigdelset(&all_masked, SIGBUS);
298 sigdelset(&all_masked, SIGSEGV);
299
300 memset(&ill_act, 0, sizeof(ill_act));
301 ill_act.sa_handler = ill_handler;
302 ill_act.sa_mask = all_masked;
303
304 sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
305 sigaction(SIGILL, &ill_act, &ill_oact);
306
307 if (sigsetjmp(ill_jmp,1) == 0) {
308 OPENSSL_fpu_probe();
309 OPENSSL_ppccap_P |= PPC_FPU;
310
311 if (sizeof(size_t) == 4) {
312#ifdef __linux
313 struct utsname uts;
314 if (uname(&uts) == 0 && strcmp(uts.machine, "ppc64") == 0)
315#endif
316 if (sigsetjmp(ill_jmp, 1) == 0) {
317 OPENSSL_ppc64_probe();
318 OPENSSL_ppccap_P |= PPC_FPU64;
319 }
320 } else {
321 /*
322 * Wanted code detecting POWER6 CPU and setting PPC_FPU64
323 */
324 }
325 }
326
327 if (sigsetjmp(ill_jmp, 1) == 0) {
328 OPENSSL_altivec_probe();
329 OPENSSL_ppccap_P |= PPC_ALTIVEC;
330 if (sigsetjmp(ill_jmp, 1) == 0) {
331 OPENSSL_crypto207_probe();
332 OPENSSL_ppccap_P |= PPC_CRYPTO207;
333 }
334 }
335
336 if (sigsetjmp(ill_jmp, 1) == 0) {
337 OPENSSL_madd300_probe();
338 OPENSSL_ppccap_P |= PPC_MADD300;
339 }
340
341 sigaction(SIGILL, &ill_oact, NULL);
342 sigprocmask(SIG_SETMASK, &oset, NULL);
343}
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