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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/ppccap.c
2 * Copyright 2009-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
16 #if defined(__linux) || defined(_AIX)
17 # include <sys/utsname.h>
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))
25 #if defined(__APPLE__) && defined(__MACH__)
26 # include <sys/types.h>
27 # include <sys/sysctl.h>
29 #include <openssl/crypto.h>
30 #include <openssl/bn.h>
31 #include <internal/cryptlib.h>
32 #include <crypto/chacha.h>
33 #include "bn/bn_local.h"
37 unsigned int OPENSSL_ppccap_P
= 0;
39 static sigset_t all_masked
;
42 #ifdef OPENSSL_BN_ASM_MONT
43 int bn_mul_mont(BN_ULONG
*rp
, const BN_ULONG
*ap
, const BN_ULONG
*bp
,
44 const BN_ULONG
*np
, const BN_ULONG
*n0
, int num
)
46 int bn_mul_mont_int(BN_ULONG
*rp
, const BN_ULONG
*ap
, const BN_ULONG
*bp
,
47 const BN_ULONG
*np
, const BN_ULONG
*n0
, int num
);
48 int bn_mul4x_mont_int(BN_ULONG
*rp
, const BN_ULONG
*ap
, const BN_ULONG
*bp
,
49 const BN_ULONG
*np
, const BN_ULONG
*n0
, int num
);
55 return bn_mul4x_mont_int(rp
, ap
, bp
, np
, n0
, num
);
58 * There used to be [optional] call to bn_mul_mont_fpu64 here,
59 * but above subroutine is faster on contemporary processors.
60 * Formulation means that there might be old processors where
61 * FPU code path would be faster, POWER6 perhaps, but there was
62 * no opportunity to figure it out...
65 return bn_mul_mont_int(rp
, ap
, bp
, np
, n0
, num
);
68 void sha256_block_p8(void *ctx
, const void *inp
, size_t len
);
69 void sha256_block_ppc(void *ctx
, const void *inp
, size_t len
);
70 void sha256_block_data_order(void *ctx
, const void *inp
, size_t len
);
71 void sha256_block_data_order(void *ctx
, const void *inp
, size_t len
)
73 OPENSSL_ppccap_P
& PPC_CRYPTO207
? sha256_block_p8(ctx
, inp
, len
) :
74 sha256_block_ppc(ctx
, inp
, len
);
77 void sha512_block_p8(void *ctx
, const void *inp
, size_t len
);
78 void sha512_block_ppc(void *ctx
, const void *inp
, size_t len
);
79 void sha512_block_data_order(void *ctx
, const void *inp
, size_t len
);
80 void sha512_block_data_order(void *ctx
, const void *inp
, size_t len
)
82 OPENSSL_ppccap_P
& PPC_CRYPTO207
? sha512_block_p8(ctx
, inp
, len
) :
83 sha512_block_ppc(ctx
, inp
, len
);
87 # ifndef OPENSSL_NO_CHACHA
88 void ChaCha20_ctr32_int(unsigned char *out
, const unsigned char *inp
,
89 size_t len
, const unsigned int key
[8],
90 const unsigned int counter
[4]);
91 void ChaCha20_ctr32_vmx(unsigned char *out
, const unsigned char *inp
,
92 size_t len
, const unsigned int key
[8],
93 const unsigned int counter
[4]);
94 void ChaCha20_ctr32_vsx(unsigned char *out
, const unsigned char *inp
,
95 size_t len
, const unsigned int key
[8],
96 const unsigned int counter
[4]);
97 void ChaCha20_ctr32(unsigned char *out
, const unsigned char *inp
,
98 size_t len
, const unsigned int key
[8],
99 const unsigned int counter
[4])
101 OPENSSL_ppccap_P
& PPC_CRYPTO207
102 ? ChaCha20_ctr32_vsx(out
, inp
, len
, key
, counter
)
103 : OPENSSL_ppccap_P
& PPC_ALTIVEC
104 ? ChaCha20_ctr32_vmx(out
, inp
, len
, key
, counter
)
105 : ChaCha20_ctr32_int(out
, inp
, len
, key
, counter
);
109 # ifndef OPENSSL_NO_POLY1305
110 void poly1305_init_int(void *ctx
, const unsigned char key
[16]);
111 void poly1305_blocks(void *ctx
, const unsigned char *inp
, size_t len
,
112 unsigned int padbit
);
113 void poly1305_emit(void *ctx
, unsigned char mac
[16],
114 const unsigned int nonce
[4]);
115 void poly1305_init_fpu(void *ctx
, const unsigned char key
[16]);
116 void poly1305_blocks_fpu(void *ctx
, const unsigned char *inp
, size_t len
,
117 unsigned int padbit
);
118 void poly1305_emit_fpu(void *ctx
, unsigned char mac
[16],
119 const unsigned int nonce
[4]);
120 void poly1305_init_vsx(void *ctx
, const unsigned char key
[16]);
121 void poly1305_blocks_vsx(void *ctx
, const unsigned char *inp
, size_t len
,
122 unsigned int padbit
);
123 void poly1305_emit_vsx(void *ctx
, unsigned char mac
[16],
124 const unsigned int nonce
[4]);
125 int poly1305_init(void *ctx
, const unsigned char key
[16], void *func
[2]);
126 int poly1305_init(void *ctx
, const unsigned char key
[16], void *func
[2])
128 if (OPENSSL_ppccap_P
& PPC_CRYPTO207
) {
129 poly1305_init_int(ctx
, key
);
130 func
[0] = (void*)(uintptr_t)poly1305_blocks_vsx
;
131 func
[1] = (void*)(uintptr_t)poly1305_emit
;
132 } else if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P
& PPC_FPU
)) {
133 poly1305_init_fpu(ctx
, key
);
134 func
[0] = (void*)(uintptr_t)poly1305_blocks_fpu
;
135 func
[1] = (void*)(uintptr_t)poly1305_emit_fpu
;
137 poly1305_init_int(ctx
, key
);
138 func
[0] = (void*)(uintptr_t)poly1305_blocks
;
139 func
[1] = (void*)(uintptr_t)poly1305_emit
;
144 #endif /* FIPS_MODULE */
146 #ifdef ECP_NISTZ256_ASM
147 void ecp_nistz256_mul_mont(unsigned long res
[4], const unsigned long a
[4],
148 const unsigned long b
[4]);
150 void ecp_nistz256_to_mont(unsigned long res
[4], const unsigned long in
[4]);
151 void ecp_nistz256_to_mont(unsigned long res
[4], const unsigned long in
[4])
153 static const unsigned long RR
[] = { 0x0000000000000003U
,
156 0x00000004fffffffdU
};
158 ecp_nistz256_mul_mont(res
, in
, RR
);
161 void ecp_nistz256_from_mont(unsigned long res
[4], const unsigned long in
[4]);
162 void ecp_nistz256_from_mont(unsigned long res
[4], const unsigned long in
[4])
164 static const unsigned long one
[] = { 1, 0, 0, 0 };
166 ecp_nistz256_mul_mont(res
, in
, one
);
170 static sigjmp_buf ill_jmp
;
171 static void ill_handler(int sig
)
173 siglongjmp(ill_jmp
, sig
);
176 void OPENSSL_fpu_probe(void);
177 void OPENSSL_ppc64_probe(void);
178 void OPENSSL_altivec_probe(void);
179 void OPENSSL_crypto207_probe(void);
180 void OPENSSL_madd300_probe(void);
182 long OPENSSL_rdtsc_mftb(void);
183 long OPENSSL_rdtsc_mfspr268(void);
185 uint32_t OPENSSL_rdtsc(void)
187 if (OPENSSL_ppccap_P
& PPC_MFTB
)
188 return OPENSSL_rdtsc_mftb();
189 else if (OPENSSL_ppccap_P
& PPC_MFSPR268
)
190 return OPENSSL_rdtsc_mfspr268();
195 size_t OPENSSL_instrument_bus_mftb(unsigned int *, size_t);
196 size_t OPENSSL_instrument_bus_mfspr268(unsigned int *, size_t);
198 size_t OPENSSL_instrument_bus(unsigned int *out
, size_t cnt
)
200 if (OPENSSL_ppccap_P
& PPC_MFTB
)
201 return OPENSSL_instrument_bus_mftb(out
, cnt
);
202 else if (OPENSSL_ppccap_P
& PPC_MFSPR268
)
203 return OPENSSL_instrument_bus_mfspr268(out
, cnt
);
208 size_t OPENSSL_instrument_bus2_mftb(unsigned int *, size_t, size_t);
209 size_t OPENSSL_instrument_bus2_mfspr268(unsigned int *, size_t, size_t);
211 size_t OPENSSL_instrument_bus2(unsigned int *out
, size_t cnt
, size_t max
)
213 if (OPENSSL_ppccap_P
& PPC_MFTB
)
214 return OPENSSL_instrument_bus2_mftb(out
, cnt
, max
);
215 else if (OPENSSL_ppccap_P
& PPC_MFSPR268
)
216 return OPENSSL_instrument_bus2_mfspr268(out
, cnt
, max
);
221 #if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
222 # if __GLIBC_PREREQ(2, 16)
223 # include <sys/auxv.h>
224 # define OSSL_IMPLEMENT_GETAUXVAL
228 #if defined(__FreeBSD__)
229 # include <sys/param.h>
230 # if __FreeBSD_version >= 1200000
231 # include <sys/auxv.h>
232 # define OSSL_IMPLEMENT_GETAUXVAL
234 static unsigned long getauxval(unsigned long key
)
236 unsigned long val
= 0ul;
238 if (elf_aux_info((int)key
, &val
, sizeof(val
)) != 0)
246 /* I wish <sys/auxv.h> was universally available */
247 #define HWCAP 16 /* AT_HWCAP */
248 #define HWCAP_PPC64 (1U << 30)
249 #define HWCAP_ALTIVEC (1U << 28)
250 #define HWCAP_FPU (1U << 27)
251 #define HWCAP_POWER6_EXT (1U << 9)
252 #define HWCAP_VSX (1U << 7)
254 #define HWCAP2 26 /* AT_HWCAP2 */
255 #define HWCAP_VEC_CRYPTO (1U << 25)
256 #define HWCAP_ARCH_3_00 (1U << 23)
258 # if defined(__GNUC__) && __GNUC__>=2
259 __attribute__ ((constructor
))
261 void OPENSSL_cpuid_setup(void)
264 struct sigaction ill_oact
, ill_act
;
266 static int trigger
= 0;
272 if ((e
= getenv("OPENSSL_ppccap"))) {
273 OPENSSL_ppccap_P
= strtoul(e
, NULL
, 0);
277 OPENSSL_ppccap_P
= 0;
280 OPENSSL_ppccap_P
|= PPC_FPU
;
282 if (sizeof(size_t) == 4) {
284 # if defined(_SC_AIX_KERNEL_BITMODE)
285 if (sysconf(_SC_AIX_KERNEL_BITMODE
) != 64)
288 if (uname(&uts
) != 0 || atoi(uts
.version
) < 6)
292 # if defined(__power_set)
294 * Value used in __power_set is a single-bit 1<<n one denoting
295 * specific processor class. Incidentally 0xffffffff<<n can be
296 * used to denote specific processor and its successors.
298 if (sizeof(size_t) == 4) {
299 /* In 32-bit case PPC_FPU64 is always fastest [if option] */
300 if (__power_set(0xffffffffU
<<13)) /* POWER5 and later */
301 OPENSSL_ppccap_P
|= PPC_FPU64
;
303 /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */
304 if (__power_set(0x1U
<<14)) /* POWER6 */
305 OPENSSL_ppccap_P
|= PPC_FPU64
;
308 if (__power_set(0xffffffffU
<<14)) /* POWER6 and later */
309 OPENSSL_ppccap_P
|= PPC_ALTIVEC
;
311 if (__power_set(0xffffffffU
<<16)) /* POWER8 and later */
312 OPENSSL_ppccap_P
|= PPC_CRYPTO207
;
314 if (__power_set(0xffffffffU
<<17)) /* POWER9 and later */
315 OPENSSL_ppccap_P
|= PPC_MADD300
;
321 #if defined(__APPLE__) && defined(__MACH__)
322 OPENSSL_ppccap_P
|= PPC_FPU
;
326 size_t len
= sizeof(val
);
328 if (sysctlbyname("hw.optional.64bitops", &val
, &len
, NULL
, 0) == 0) {
330 OPENSSL_ppccap_P
|= PPC_FPU64
;
334 if (sysctlbyname("hw.optional.altivec", &val
, &len
, NULL
, 0) == 0) {
336 OPENSSL_ppccap_P
|= PPC_ALTIVEC
;
343 #ifdef OSSL_IMPLEMENT_GETAUXVAL
345 unsigned long hwcap
= getauxval(HWCAP
);
346 unsigned long hwcap2
= getauxval(HWCAP2
);
348 if (hwcap
& HWCAP_FPU
) {
349 OPENSSL_ppccap_P
|= PPC_FPU
;
351 if (sizeof(size_t) == 4) {
352 /* In 32-bit case PPC_FPU64 is always fastest [if option] */
353 if (hwcap
& HWCAP_PPC64
)
354 OPENSSL_ppccap_P
|= PPC_FPU64
;
356 /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */
357 if (hwcap
& HWCAP_POWER6_EXT
)
358 OPENSSL_ppccap_P
|= PPC_FPU64
;
362 if (hwcap
& HWCAP_ALTIVEC
) {
363 OPENSSL_ppccap_P
|= PPC_ALTIVEC
;
365 if ((hwcap
& HWCAP_VSX
) && (hwcap2
& HWCAP_VEC_CRYPTO
))
366 OPENSSL_ppccap_P
|= PPC_CRYPTO207
;
369 if (hwcap2
& HWCAP_ARCH_3_00
) {
370 OPENSSL_ppccap_P
|= PPC_MADD300
;
375 sigfillset(&all_masked
);
376 sigdelset(&all_masked
, SIGILL
);
377 sigdelset(&all_masked
, SIGTRAP
);
379 sigdelset(&all_masked
, SIGEMT
);
381 sigdelset(&all_masked
, SIGFPE
);
382 sigdelset(&all_masked
, SIGBUS
);
383 sigdelset(&all_masked
, SIGSEGV
);
385 memset(&ill_act
, 0, sizeof(ill_act
));
386 ill_act
.sa_handler
= ill_handler
;
387 ill_act
.sa_mask
= all_masked
;
389 sigprocmask(SIG_SETMASK
, &ill_act
.sa_mask
, &oset
);
390 sigaction(SIGILL
, &ill_act
, &ill_oact
);
392 #ifndef OSSL_IMPLEMENT_GETAUXVAL
393 if (sigsetjmp(ill_jmp
,1) == 0) {
395 OPENSSL_ppccap_P
|= PPC_FPU
;
397 if (sizeof(size_t) == 4) {
400 if (uname(&uts
) == 0 && strcmp(uts
.machine
, "ppc64") == 0)
402 if (sigsetjmp(ill_jmp
, 1) == 0) {
403 OPENSSL_ppc64_probe();
404 OPENSSL_ppccap_P
|= PPC_FPU64
;
408 * Wanted code detecting POWER6 CPU and setting PPC_FPU64
413 if (sigsetjmp(ill_jmp
, 1) == 0) {
414 OPENSSL_altivec_probe();
415 OPENSSL_ppccap_P
|= PPC_ALTIVEC
;
416 if (sigsetjmp(ill_jmp
, 1) == 0) {
417 OPENSSL_crypto207_probe();
418 OPENSSL_ppccap_P
|= PPC_CRYPTO207
;
422 if (sigsetjmp(ill_jmp
, 1) == 0) {
423 OPENSSL_madd300_probe();
424 OPENSSL_ppccap_P
|= PPC_MADD300
;
428 if (sigsetjmp(ill_jmp
, 1) == 0) {
429 OPENSSL_rdtsc_mftb();
430 OPENSSL_ppccap_P
|= PPC_MFTB
;
431 } else if (sigsetjmp(ill_jmp
, 1) == 0) {
432 OPENSSL_rdtsc_mfspr268();
433 OPENSSL_ppccap_P
|= PPC_MFSPR268
;
436 sigaction(SIGILL
, &ill_oact
, NULL
);
437 sigprocmask(SIG_SETMASK
, &oset
, NULL
);