2 * Copyright 2005-2016 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
17 #include <openssl/bn.h>
18 #include "internal/cryptlib.h"
20 #include "sparc_arch.h"
22 #if defined(__GNUC__) && defined(__linux)
23 __attribute__ ((visibility("hidden")))
25 unsigned int OPENSSL_sparcv9cap_P[2] = { SPARCV9_TICK_PRIVILEGED, 0 };
28 * TODO(3.0): Temporarily disabled some assembler that hasn't been brought into
29 * the FIPS module yet.
32 int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
33 const BN_ULONG *np, const BN_ULONG *n0, int num)
35 int bn_mul_mont_vis3(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
36 const BN_ULONG *np, const BN_ULONG *n0, int num);
37 int bn_mul_mont_fpu(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
38 const BN_ULONG *np, const BN_ULONG *n0, int num);
39 int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
40 const BN_ULONG *np, const BN_ULONG *n0, int num);
42 if (!(num & 1) && num >= 6) {
43 if ((num & 15) == 0 && num <= 64 &&
44 (OPENSSL_sparcv9cap_P[1] & (CFR_MONTMUL | CFR_MONTSQR)) ==
45 (CFR_MONTMUL | CFR_MONTSQR)) {
46 typedef int (*bn_mul_mont_f) (BN_ULONG *rp, const BN_ULONG *ap,
50 int bn_mul_mont_t4_8(BN_ULONG *rp, const BN_ULONG *ap,
51 const BN_ULONG *bp, const BN_ULONG *np,
53 int bn_mul_mont_t4_16(BN_ULONG *rp, const BN_ULONG *ap,
54 const BN_ULONG *bp, const BN_ULONG *np,
56 int bn_mul_mont_t4_24(BN_ULONG *rp, const BN_ULONG *ap,
57 const BN_ULONG *bp, const BN_ULONG *np,
59 int bn_mul_mont_t4_32(BN_ULONG *rp, const BN_ULONG *ap,
60 const BN_ULONG *bp, const BN_ULONG *np,
62 static const bn_mul_mont_f funcs[4] = {
63 bn_mul_mont_t4_8, bn_mul_mont_t4_16,
64 bn_mul_mont_t4_24, bn_mul_mont_t4_32
66 bn_mul_mont_f worker = funcs[num / 16 - 1];
68 if ((*worker) (rp, ap, bp, np, n0))
70 /* retry once and fall back */
71 if ((*worker) (rp, ap, bp, np, n0))
73 return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
75 if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3))
76 return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
79 * bn_mul_mont_fpu doesn't use FMADD, we just use the
80 * flag to detect when FPU path is preferable in cases
81 * when current heuristics is unreliable. [it works
82 * out because FMADD-capable processors where FPU
83 * code path is undesirable are also VIS3-capable and
84 * VIS3 code path takes precedence.]
86 ( (OPENSSL_sparcv9cap_P[0] & SPARCV9_FMADD) ||
87 (OPENSSL_sparcv9cap_P[0] &
88 (SPARCV9_PREFER_FPU | SPARCV9_VIS1)) ==
89 (SPARCV9_PREFER_FPU | SPARCV9_VIS1) ))
90 return bn_mul_mont_fpu(rp, ap, bp, np, n0, num);
92 return bn_mul_mont_int(rp, ap, bp, np, n0, num);
94 #endif /* FIPS_MODE */
96 unsigned long _sparcv9_rdtick(void);
97 void _sparcv9_vis1_probe(void);
98 unsigned long _sparcv9_vis1_instrument(void);
99 void _sparcv9_vis2_probe(void);
100 void _sparcv9_fmadd_probe(void);
101 unsigned long _sparcv9_rdcfr(void);
102 void _sparcv9_vis3_probe(void);
103 void _sparcv9_fjaesx_probe(void);
104 unsigned long _sparcv9_random(void);
105 size_t _sparcv9_vis1_instrument_bus(unsigned int *, size_t);
106 size_t _sparcv9_vis1_instrument_bus2(unsigned int *, size_t, size_t);
108 uint32_t OPENSSL_rdtsc(void)
110 if (OPENSSL_sparcv9cap_P[0] & SPARCV9_TICK_PRIVILEGED)
111 #if defined(__sun) && defined(__SVR4)
117 return _sparcv9_rdtick();
120 size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt)
122 if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) ==
124 return _sparcv9_vis1_instrument_bus(out, cnt);
129 size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max)
131 if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) ==
133 return _sparcv9_vis1_instrument_bus2(out, cnt, max);
138 static sigjmp_buf common_jmp;
139 static void common_handler(int sig)
141 siglongjmp(common_jmp, sig);
144 #if defined(__sun) && defined(__SVR4)
145 # if defined(__GNUC__) && __GNUC__>=2
146 extern unsigned int getisax(unsigned int vec[], unsigned int sz) __attribute__ ((weak));
147 # elif defined(__SUNPRO_C)
149 extern unsigned int getisax(unsigned int vec[], unsigned int sz);
151 static unsigned int (*getisax) (unsigned int vec[], unsigned int sz) = NULL;
155 void OPENSSL_cpuid_setup(void)
158 struct sigaction common_act, ill_oact, bus_oact;
159 sigset_t all_masked, oset;
160 static int trigger = 0;
166 if ((e = getenv("OPENSSL_sparcv9cap"))) {
167 OPENSSL_sparcv9cap_P[0] = strtoul(e, NULL, 0);
168 if ((e = strchr(e, ':')))
169 OPENSSL_sparcv9cap_P[1] = strtoul(e + 1, NULL, 0);
173 #if defined(__sun) && defined(__SVR4)
174 if (getisax != NULL) {
175 unsigned int vec[2] = { 0, 0 };
177 if (getisax (vec,2)) {
178 if (vec[0]&0x00020) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1;
179 if (vec[0]&0x00040) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
180 if (vec[0]&0x00080) OPENSSL_sparcv9cap_P[0] |= SPARCV9_BLK;
181 if (vec[0]&0x00100) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD;
182 if (vec[0]&0x00400) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;
183 if (vec[0]&0x01000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJHPCACE;
184 if (vec[0]&0x02000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJDESX;
185 if (vec[0]&0x08000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_IMA;
186 if (vec[0]&0x10000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJAESX;
187 if (vec[1]&0x00008) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS4;
189 /* reconstruct %cfr copy */
190 OPENSSL_sparcv9cap_P[1] = (vec[0]>>17)&0x3ff;
191 OPENSSL_sparcv9cap_P[1] |= (OPENSSL_sparcv9cap_P[1]&CFR_MONTMUL)<<1;
192 if (vec[0]&0x20000000) OPENSSL_sparcv9cap_P[1] |= CFR_CRC32C;
193 if (vec[1]&0x00000020) OPENSSL_sparcv9cap_P[1] |= CFR_XMPMUL;
194 if (vec[1]&0x00000040)
195 OPENSSL_sparcv9cap_P[1] |= CFR_XMONTMUL|CFR_XMONTSQR;
197 /* Some heuristics */
198 /* all known VIS2-capable CPUs have unprivileged tick counter */
199 if (OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS2)
200 OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
202 OPENSSL_sparcv9cap_P[0] |= SPARCV9_PREFER_FPU;
204 /* detect UltraSPARC-Tx, see sparccpud.S for details... */
205 if ((OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS1) &&
206 _sparcv9_vis1_instrument() >= 12)
207 OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU);
210 if (sizeof(size_t) == 8)
211 OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;
217 /* Initial value, fits UltraSPARC-I&II... */
218 OPENSSL_sparcv9cap_P[0] = SPARCV9_PREFER_FPU | SPARCV9_TICK_PRIVILEGED;
220 sigfillset(&all_masked);
221 sigdelset(&all_masked, SIGILL);
222 sigdelset(&all_masked, SIGTRAP);
224 sigdelset(&all_masked, SIGEMT);
226 sigdelset(&all_masked, SIGFPE);
227 sigdelset(&all_masked, SIGBUS);
228 sigdelset(&all_masked, SIGSEGV);
229 sigprocmask(SIG_SETMASK, &all_masked, &oset);
231 memset(&common_act, 0, sizeof(common_act));
232 common_act.sa_handler = common_handler;
233 common_act.sa_mask = all_masked;
235 sigaction(SIGILL, &common_act, &ill_oact);
236 sigaction(SIGBUS, &common_act, &bus_oact); /* T1 fails 16-bit ldda [on
239 if (sigsetjmp(common_jmp, 1) == 0) {
241 OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
244 if (sigsetjmp(common_jmp, 1) == 0) {
245 _sparcv9_vis1_probe();
246 OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1 | SPARCV9_BLK;
247 /* detect UltraSPARC-Tx, see sparccpud.S for details... */
248 if (_sparcv9_vis1_instrument() >= 12)
249 OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU);
251 _sparcv9_vis2_probe();
252 OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
256 if (sigsetjmp(common_jmp, 1) == 0) {
257 _sparcv9_fmadd_probe();
258 OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD;
262 * VIS3 flag is tested independently from VIS1, unlike VIS2 that is,
263 * because VIS3 defines even integer instructions.
265 if (sigsetjmp(common_jmp, 1) == 0) {
266 _sparcv9_vis3_probe();
267 OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;
270 if (sigsetjmp(common_jmp, 1) == 0) {
271 _sparcv9_fjaesx_probe();
272 OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJAESX;
276 * In wait for better solution _sparcv9_rdcfr is masked by
277 * VIS3 flag, because it goes to uninterruptable endless
278 * loop on UltraSPARC II running Solaris. Things might be
279 * different on Linux...
281 if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3) &&
282 sigsetjmp(common_jmp, 1) == 0) {
283 OPENSSL_sparcv9cap_P[1] = (unsigned int)_sparcv9_rdcfr();
286 sigaction(SIGBUS, &bus_oact, NULL);
287 sigaction(SIGILL, &ill_oact, NULL);
289 sigprocmask(SIG_SETMASK, &oset, NULL);
291 if (sizeof(size_t) == 8)
292 OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;
295 int ret = syscall(340);
297 if (ret >= 0 && ret & 1)
298 OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;