8 #include <openssl/bn.h>
10 #include "sparc_arch.h"
12 #if defined(__GNUC__) && defined(__linux)
13 __attribute__ ((visibility("hidden")))
15 unsigned int OPENSSL_sparcv9cap_P[2] = { SPARCV9_TICK_PRIVILEGED, 0 };
17 int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
18 const BN_ULONG *np, const BN_ULONG *n0, int num)
20 int bn_mul_mont_vis3(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
21 const BN_ULONG *np, const BN_ULONG *n0, int num);
22 int bn_mul_mont_fpu(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
23 const BN_ULONG *np, const BN_ULONG *n0, int num);
24 int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
25 const BN_ULONG *np, const BN_ULONG *n0, int num);
27 if (!(num & 1) && num >= 6) {
28 if ((num & 15) == 0 && num <= 64 &&
29 (OPENSSL_sparcv9cap_P[1] & (CFR_MONTMUL | CFR_MONTSQR)) ==
30 (CFR_MONTMUL | CFR_MONTSQR)) {
31 typedef int (*bn_mul_mont_f) (BN_ULONG *rp, const BN_ULONG *ap,
35 int bn_mul_mont_t4_8(BN_ULONG *rp, const BN_ULONG *ap,
36 const BN_ULONG *bp, const BN_ULONG *np,
38 int bn_mul_mont_t4_16(BN_ULONG *rp, const BN_ULONG *ap,
39 const BN_ULONG *bp, const BN_ULONG *np,
41 int bn_mul_mont_t4_24(BN_ULONG *rp, const BN_ULONG *ap,
42 const BN_ULONG *bp, const BN_ULONG *np,
44 int bn_mul_mont_t4_32(BN_ULONG *rp, const BN_ULONG *ap,
45 const BN_ULONG *bp, const BN_ULONG *np,
47 static const bn_mul_mont_f funcs[4] = {
48 bn_mul_mont_t4_8, bn_mul_mont_t4_16,
49 bn_mul_mont_t4_24, bn_mul_mont_t4_32
51 bn_mul_mont_f worker = funcs[num / 16 - 1];
53 if ((*worker) (rp, ap, bp, np, n0))
55 /* retry once and fall back */
56 if ((*worker) (rp, ap, bp, np, n0))
58 return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
60 if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3))
61 return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
63 (OPENSSL_sparcv9cap_P[0] &
64 (SPARCV9_PREFER_FPU | SPARCV9_VIS1)) ==
65 (SPARCV9_PREFER_FPU | SPARCV9_VIS1))
66 return bn_mul_mont_fpu(rp, ap, bp, np, n0, num);
68 return bn_mul_mont_int(rp, ap, bp, np, n0, num);
71 unsigned long _sparcv9_rdtick(void);
72 void _sparcv9_vis1_probe(void);
73 unsigned long _sparcv9_vis1_instrument(void);
74 void _sparcv9_vis2_probe(void);
75 void _sparcv9_fmadd_probe(void);
76 unsigned long _sparcv9_rdcfr(void);
77 void _sparcv9_vis3_probe(void);
78 unsigned long _sparcv9_random(void);
79 size_t _sparcv9_vis1_instrument_bus(unsigned int *, size_t);
80 size_t _sparcv9_vis1_instrument_bus2(unsigned int *, size_t, size_t);
82 unsigned long OPENSSL_rdtsc(void)
84 if (OPENSSL_sparcv9cap_P[0] & SPARCV9_TICK_PRIVILEGED)
85 #if defined(__sun) && defined(__SVR4)
91 return _sparcv9_rdtick();
94 size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt)
96 if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) ==
98 return _sparcv9_vis1_instrument_bus(out, cnt);
103 size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max)
105 if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) ==
107 return _sparcv9_vis1_instrument_bus2(out, cnt, max);
112 static sigjmp_buf common_jmp;
113 static void common_handler(int sig)
115 siglongjmp(common_jmp, sig);
118 #if defined(__sun) && defined(__SVR4)
119 # if defined(__GNUC__) && __GNUC__>=2
120 extern unsigned int getisax(unsigned int vec[], unsigned int sz) __attribute__ ((weak));
121 # elif defined(__SUNPRO_C)
123 extern unsigned int getisax(unsigned int vec[], unsigned int sz);
125 static unsigned int (*getisax) (unsigned int vec[], unsigned int sz) = NULL;
129 void OPENSSL_cpuid_setup(void)
132 struct sigaction common_act, ill_oact, bus_oact;
133 sigset_t all_masked, oset;
134 static int trigger = 0;
140 if ((e = getenv("OPENSSL_sparcv9cap"))) {
141 OPENSSL_sparcv9cap_P[0] = strtoul(e, NULL, 0);
142 if ((e = strchr(e, ':')))
143 OPENSSL_sparcv9cap_P[1] = strtoul(e + 1, NULL, 0);
147 #if defined(__sun) && defined(__SVR4)
148 if (getisax != NULL) {
151 if (getisax (vec,1)) {
152 if (vec[0]&0x0020) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1;
153 if (vec[0]&0x0040) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
154 if (vec[0]&0x0080) OPENSSL_sparcv9cap_P[0] |= SPARCV9_BLK;
155 if (vec[0]&0x0100) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD;
156 if (vec[0]&0x0400) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;
158 /* reconstruct %cfr copy */
159 OPENSSL_sparcv9cap_P[1] = (vec[0]>>17)&0x3ff;
160 OPENSSL_sparcv9cap_P[1] |= (OPENSSL_sparcv9cap_P[1]&CFR_MONTMUL)<<1;
161 if (vec[0]&0x20000000) OPENSSL_sparcv9cap_P[1] |= CFR_CRC32C;
163 /* Some heuristics */
164 /* all known VIS2-capable CPUs have unprivileged tick counter */
165 if (OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS2)
166 OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
168 OPENSSL_sparcv9cap_P[0] |= SPARCV9_PREFER_FPU;
170 /* detect UltraSPARC-Tx, see sparccpud.S for details... */
171 if ((OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS1) &&
172 _sparcv9_vis1_instrument() >= 12)
173 OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU);
176 if (sizeof(size_t) == 8)
177 OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;
183 /* Initial value, fits UltraSPARC-I&II... */
184 OPENSSL_sparcv9cap_P[0] = SPARCV9_PREFER_FPU | SPARCV9_TICK_PRIVILEGED;
186 sigfillset(&all_masked);
187 sigdelset(&all_masked, SIGILL);
188 sigdelset(&all_masked, SIGTRAP);
190 sigdelset(&all_masked, SIGEMT);
192 sigdelset(&all_masked, SIGFPE);
193 sigdelset(&all_masked, SIGBUS);
194 sigdelset(&all_masked, SIGSEGV);
195 sigprocmask(SIG_SETMASK, &all_masked, &oset);
197 memset(&common_act, 0, sizeof(common_act));
198 common_act.sa_handler = common_handler;
199 common_act.sa_mask = all_masked;
201 sigaction(SIGILL, &common_act, &ill_oact);
202 sigaction(SIGBUS, &common_act, &bus_oact); /* T1 fails 16-bit ldda [on
205 if (sigsetjmp(common_jmp, 1) == 0) {
207 OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED;
210 if (sigsetjmp(common_jmp, 1) == 0) {
211 _sparcv9_vis1_probe();
212 OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1 | SPARCV9_BLK;
213 /* detect UltraSPARC-Tx, see sparccpud.S for details... */
214 if (_sparcv9_vis1_instrument() >= 12)
215 OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU);
217 _sparcv9_vis2_probe();
218 OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
222 if (sigsetjmp(common_jmp, 1) == 0) {
223 _sparcv9_fmadd_probe();
224 OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD;
228 * VIS3 flag is tested independently from VIS1, unlike VIS2 that is,
229 * because VIS3 defines even integer instructions.
231 if (sigsetjmp(common_jmp, 1) == 0) {
232 _sparcv9_vis3_probe();
233 OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;
237 * In wait for better solution _sparcv9_rdcfr is masked by
238 * VIS3 flag, because it goes to uninterruptable endless
239 * loop on UltraSPARC II running Solaris. Things might be
240 * different on Linux...
242 if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3) &&
243 sigsetjmp(common_jmp, 1) == 0) {
244 OPENSSL_sparcv9cap_P[1] = (unsigned int)_sparcv9_rdcfr();
247 sigaction(SIGBUS, &bus_oact, NULL);
248 sigaction(SIGILL, &ill_oact, NULL);
250 sigprocmask(SIG_SETMASK, &oset, NULL);
252 if (sizeof(size_t) == 8)
253 OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;
256 int ret = syscall(340);
258 if (ret >= 0 && ret & 1)
259 OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK;