]>
Commit | Line | Data |
---|---|---|
b1322259 | 1 | /* |
38fc02a7 | 2 | * Copyright 2005-2021 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 | ||
c06b0f3d AP |
10 | #include <stdio.h> |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
c32fcca6 AP |
13 | #include <setjmp.h> |
14 | #include <signal.h> | |
c06b0f3d | 15 | #include <sys/time.h> |
68c06bf6 | 16 | #include <unistd.h> |
c06b0f3d | 17 | #include <openssl/bn.h> |
d807db26 | 18 | #include "internal/cryptlib.h" |
52f7e44e | 19 | #include "crypto/sparc_arch.h" |
c32fcca6 | 20 | |
1fda639a | 21 | #if defined(__GNUC__) && defined(__linux) |
0f113f3e | 22 | __attribute__ ((visibility("hidden"))) |
1fda639a | 23 | #endif |
0f113f3e MC |
24 | unsigned int OPENSSL_sparcv9cap_P[2] = { SPARCV9_TICK_PRIVILEGED, 0 }; |
25 | ||
0f113f3e MC |
26 | unsigned long _sparcv9_rdtick(void); |
27 | void _sparcv9_vis1_probe(void); | |
28 | unsigned long _sparcv9_vis1_instrument(void); | |
29 | void _sparcv9_vis2_probe(void); | |
30 | void _sparcv9_fmadd_probe(void); | |
31 | unsigned long _sparcv9_rdcfr(void); | |
32 | void _sparcv9_vis3_probe(void); | |
d40a13af | 33 | void _sparcv9_fjaesx_probe(void); |
0f113f3e MC |
34 | unsigned long _sparcv9_random(void); |
35 | size_t _sparcv9_vis1_instrument_bus(unsigned int *, size_t); | |
36 | size_t _sparcv9_vis1_instrument_bus2(unsigned int *, size_t, size_t); | |
c32fcca6 | 37 | |
d807db26 | 38 | uint32_t OPENSSL_rdtsc(void) |
0f113f3e MC |
39 | { |
40 | if (OPENSSL_sparcv9cap_P[0] & SPARCV9_TICK_PRIVILEGED) | |
c06b0f3d | 41 | #if defined(__sun) && defined(__SVR4) |
0f113f3e | 42 | return gethrtime(); |
c06b0f3d | 43 | #else |
0f113f3e | 44 | return 0; |
c06b0f3d | 45 | #endif |
0f113f3e MC |
46 | else |
47 | return _sparcv9_rdtick(); | |
48 | } | |
49 | ||
50 | size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt) | |
51 | { | |
52 | if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) == | |
53 | SPARCV9_BLK) | |
54 | return _sparcv9_vis1_instrument_bus(out, cnt); | |
55 | else | |
56 | return 0; | |
57 | } | |
58 | ||
59 | size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max) | |
60 | { | |
61 | if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) == | |
62 | SPARCV9_BLK) | |
63 | return _sparcv9_vis1_instrument_bus2(out, cnt, max); | |
64 | else | |
65 | return 0; | |
66 | } | |
5fabb88a | 67 | |
c32fcca6 | 68 | static sigjmp_buf common_jmp; |
0f113f3e MC |
69 | static void common_handler(int sig) |
70 | { | |
71 | siglongjmp(common_jmp, sig); | |
72 | } | |
c32fcca6 | 73 | |
2238e0e4 AP |
74 | #if defined(__sun) && defined(__SVR4) |
75 | # if defined(__GNUC__) && __GNUC__>=2 | |
76 | extern unsigned int getisax(unsigned int vec[], unsigned int sz) __attribute__ ((weak)); | |
77 | # elif defined(__SUNPRO_C) | |
78 | #pragma weak getisax | |
79 | extern unsigned int getisax(unsigned int vec[], unsigned int sz); | |
80 | # else | |
81 | static unsigned int (*getisax) (unsigned int vec[], unsigned int sz) = NULL; | |
82 | # endif | |
83 | #endif | |
84 | ||
5d7324e4 | 85 | void OPENSSL_cpuid_setup(void) |
0f113f3e MC |
86 | { |
87 | char *e; | |
88 | struct sigaction common_act, ill_oact, bus_oact; | |
89 | sigset_t all_masked, oset; | |
90 | static int trigger = 0; | |
91 | ||
92 | if (trigger) | |
93 | return; | |
94 | trigger = 1; | |
95 | ||
96 | if ((e = getenv("OPENSSL_sparcv9cap"))) { | |
97 | OPENSSL_sparcv9cap_P[0] = strtoul(e, NULL, 0); | |
98 | if ((e = strchr(e, ':'))) | |
99 | OPENSSL_sparcv9cap_P[1] = strtoul(e + 1, NULL, 0); | |
100 | return; | |
101 | } | |
102 | ||
2238e0e4 AP |
103 | #if defined(__sun) && defined(__SVR4) |
104 | if (getisax != NULL) { | |
a5a95f8d | 105 | unsigned int vec[2] = { 0, 0 }; |
2238e0e4 | 106 | |
a5a95f8d | 107 | if (getisax (vec,2)) { |
299ccadc AP |
108 | if (vec[0]&0x00020) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1; |
109 | if (vec[0]&0x00040) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2; | |
110 | if (vec[0]&0x00080) OPENSSL_sparcv9cap_P[0] |= SPARCV9_BLK; | |
111 | if (vec[0]&0x00100) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD; | |
112 | if (vec[0]&0x00400) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3; | |
113 | if (vec[0]&0x01000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJHPCACE; | |
114 | if (vec[0]&0x02000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJDESX; | |
115 | if (vec[0]&0x08000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_IMA; | |
4400f6c6 | 116 | if (vec[0]&0x10000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJAESX; |
299ccadc | 117 | if (vec[1]&0x00008) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS4; |
2238e0e4 AP |
118 | |
119 | /* reconstruct %cfr copy */ | |
120 | OPENSSL_sparcv9cap_P[1] = (vec[0]>>17)&0x3ff; | |
121 | OPENSSL_sparcv9cap_P[1] |= (OPENSSL_sparcv9cap_P[1]&CFR_MONTMUL)<<1; | |
122 | if (vec[0]&0x20000000) OPENSSL_sparcv9cap_P[1] |= CFR_CRC32C; | |
299ccadc AP |
123 | if (vec[1]&0x00000020) OPENSSL_sparcv9cap_P[1] |= CFR_XMPMUL; |
124 | if (vec[1]&0x00000040) | |
125 | OPENSSL_sparcv9cap_P[1] |= CFR_XMONTMUL|CFR_XMONTSQR; | |
2238e0e4 AP |
126 | |
127 | /* Some heuristics */ | |
128 | /* all known VIS2-capable CPUs have unprivileged tick counter */ | |
129 | if (OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS2) | |
130 | OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED; | |
131 | ||
132 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_PREFER_FPU; | |
133 | ||
134 | /* detect UltraSPARC-Tx, see sparccpud.S for details... */ | |
135 | if ((OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS1) && | |
136 | _sparcv9_vis1_instrument() >= 12) | |
137 | OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU); | |
138 | } | |
139 | ||
140 | if (sizeof(size_t) == 8) | |
141 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK; | |
142 | ||
143 | return; | |
144 | } | |
145 | #endif | |
146 | ||
0f113f3e MC |
147 | /* Initial value, fits UltraSPARC-I&II... */ |
148 | OPENSSL_sparcv9cap_P[0] = SPARCV9_PREFER_FPU | SPARCV9_TICK_PRIVILEGED; | |
149 | ||
150 | sigfillset(&all_masked); | |
151 | sigdelset(&all_masked, SIGILL); | |
152 | sigdelset(&all_masked, SIGTRAP); | |
153 | # ifdef SIGEMT | |
154 | sigdelset(&all_masked, SIGEMT); | |
155 | # endif | |
156 | sigdelset(&all_masked, SIGFPE); | |
157 | sigdelset(&all_masked, SIGBUS); | |
158 | sigdelset(&all_masked, SIGSEGV); | |
159 | sigprocmask(SIG_SETMASK, &all_masked, &oset); | |
160 | ||
161 | memset(&common_act, 0, sizeof(common_act)); | |
162 | common_act.sa_handler = common_handler; | |
163 | common_act.sa_mask = all_masked; | |
164 | ||
165 | sigaction(SIGILL, &common_act, &ill_oact); | |
166 | sigaction(SIGBUS, &common_act, &bus_oact); /* T1 fails 16-bit ldda [on | |
167 | * Linux] */ | |
168 | ||
169 | if (sigsetjmp(common_jmp, 1) == 0) { | |
170 | _sparcv9_rdtick(); | |
171 | OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED; | |
172 | } | |
173 | ||
174 | if (sigsetjmp(common_jmp, 1) == 0) { | |
175 | _sparcv9_vis1_probe(); | |
176 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1 | SPARCV9_BLK; | |
177 | /* detect UltraSPARC-Tx, see sparccpud.S for details... */ | |
178 | if (_sparcv9_vis1_instrument() >= 12) | |
179 | OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU); | |
180 | else { | |
181 | _sparcv9_vis2_probe(); | |
182 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2; | |
183 | } | |
184 | } | |
185 | ||
186 | if (sigsetjmp(common_jmp, 1) == 0) { | |
187 | _sparcv9_fmadd_probe(); | |
188 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD; | |
189 | } | |
190 | ||
191 | /* | |
192 | * VIS3 flag is tested independently from VIS1, unlike VIS2 that is, | |
193 | * because VIS3 defines even integer instructions. | |
194 | */ | |
195 | if (sigsetjmp(common_jmp, 1) == 0) { | |
196 | _sparcv9_vis3_probe(); | |
197 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3; | |
198 | } | |
0f113f3e | 199 | |
4400f6c6 AP |
200 | if (sigsetjmp(common_jmp, 1) == 0) { |
201 | _sparcv9_fjaesx_probe(); | |
202 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJAESX; | |
203 | } | |
204 | ||
0f113f3e MC |
205 | /* |
206 | * In wait for better solution _sparcv9_rdcfr is masked by | |
7fa8bcfe | 207 | * VIS3 flag, because it goes to uninterruptible endless |
0f113f3e MC |
208 | * loop on UltraSPARC II running Solaris. Things might be |
209 | * different on Linux... | |
210 | */ | |
211 | if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3) && | |
212 | sigsetjmp(common_jmp, 1) == 0) { | |
213 | OPENSSL_sparcv9cap_P[1] = (unsigned int)_sparcv9_rdcfr(); | |
214 | } | |
215 | ||
216 | sigaction(SIGBUS, &bus_oact, NULL); | |
217 | sigaction(SIGILL, &ill_oact, NULL); | |
218 | ||
219 | sigprocmask(SIG_SETMASK, &oset, NULL); | |
220 | ||
221 | if (sizeof(size_t) == 8) | |
222 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK; | |
223 | # ifdef __linux | |
224 | else { | |
225 | int ret = syscall(340); | |
226 | ||
227 | if (ret >= 0 && ret & 1) | |
228 | OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK; | |
229 | } | |
230 | # endif | |
231 | } |