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Diffstat (limited to 'src/lib/libcrypto/sparcv9cap.c')
-rw-r--r--src/lib/libcrypto/sparcv9cap.c237
1 files changed, 237 insertions, 0 deletions
diff --git a/src/lib/libcrypto/sparcv9cap.c b/src/lib/libcrypto/sparcv9cap.c
new file mode 100644
index 0000000000..43b3ac6f81
--- /dev/null
+++ b/src/lib/libcrypto/sparcv9cap.c
@@ -0,0 +1,237 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <setjmp.h>
5#include <signal.h>
6#include <sys/time.h>
7#include <openssl/bn.h>
8
9#define SPARCV9_TICK_PRIVILEGED (1<<0)
10#define SPARCV9_PREFER_FPU (1<<1)
11#define SPARCV9_VIS1 (1<<2)
12#define SPARCV9_VIS2 (1<<3) /* reserved */
13#define SPARCV9_FMADD (1<<4) /* reserved for SPARC64 V */
14
15static int OPENSSL_sparcv9cap_P=SPARCV9_TICK_PRIVILEGED;
16
17int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np,const BN_ULONG *n0, int num)
18 {
19 int bn_mul_mont_fpu(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np,const BN_ULONG *n0, int num);
20 int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np,const BN_ULONG *n0, int num);
21
22 if (num>=8 && !(num&1) &&
23 (OPENSSL_sparcv9cap_P&(SPARCV9_PREFER_FPU|SPARCV9_VIS1)) ==
24 (SPARCV9_PREFER_FPU|SPARCV9_VIS1))
25 return bn_mul_mont_fpu(rp,ap,bp,np,n0,num);
26 else
27 return bn_mul_mont_int(rp,ap,bp,np,n0,num);
28 }
29
30unsigned long _sparcv9_rdtick(void);
31void _sparcv9_vis1_probe(void);
32unsigned long _sparcv9_vis1_instrument(void);
33void _sparcv9_vis2_probe(void);
34void _sparcv9_fmadd_probe(void);
35
36unsigned long OPENSSL_rdtsc(void)
37 {
38 if (OPENSSL_sparcv9cap_P&SPARCV9_TICK_PRIVILEGED)
39#if defined(__sun) && defined(__SVR4)
40 return gethrtime();
41#else
42 return 0;
43#endif
44 else
45 return _sparcv9_rdtick();
46 }
47
48#if 0 && defined(__sun) && defined(__SVR4)
49/* This code path is disabled, because of incompatibility of
50 * libdevinfo.so.1 and libmalloc.so.1 (see below for details)
51 */
52#include <malloc.h>
53#include <dlfcn.h>
54#include <libdevinfo.h>
55#include <sys/systeminfo.h>
56
57typedef di_node_t (*di_init_t)(const char *,uint_t);
58typedef void (*di_fini_t)(di_node_t);
59typedef char * (*di_node_name_t)(di_node_t);
60typedef int (*di_walk_node_t)(di_node_t,uint_t,di_node_name_t,int (*)(di_node_t,di_node_name_t));
61
62#define DLLINK(h,name) (name=(name##_t)dlsym((h),#name))
63
64static int walk_nodename(di_node_t node, di_node_name_t di_node_name)
65 {
66 char *name = (*di_node_name)(node);
67
68 /* This is expected to catch all UltraSPARC flavors prior T1 */
69 if (!strcmp (name,"SUNW,UltraSPARC") ||
70 !strncmp(name,"SUNW,UltraSPARC-I",17)) /* covers II,III,IV */
71 {
72 OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU|SPARCV9_VIS1;
73
74 /* %tick is privileged only on UltraSPARC-I/II, but not IIe */
75 if (name[14]!='\0' && name[17]!='\0' && name[18]!='\0')
76 OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED;
77
78 return DI_WALK_TERMINATE;
79 }
80 /* This is expected to catch remaining UltraSPARCs, such as T1 */
81 else if (!strncmp(name,"SUNW,UltraSPARC",15))
82 {
83 OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED;
84
85 return DI_WALK_TERMINATE;
86 }
87
88 return DI_WALK_CONTINUE;
89 }
90
91void OPENSSL_cpuid_setup(void)
92 {
93 void *h;
94 char *e,si[256];
95 static int trigger=0;
96
97 if (trigger) return;
98 trigger=1;
99
100 if ((e=getenv("OPENSSL_sparcv9cap")))
101 {
102 OPENSSL_sparcv9cap_P=strtoul(e,NULL,0);
103 return;
104 }
105
106 if (sysinfo(SI_MACHINE,si,sizeof(si))>0)
107 {
108 if (strcmp(si,"sun4v"))
109 /* FPU is preferred for all CPUs, but US-T1/2 */
110 OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU;
111 }
112
113 if (sysinfo(SI_ISALIST,si,sizeof(si))>0)
114 {
115 if (strstr(si,"+vis"))
116 OPENSSL_sparcv9cap_P |= SPARCV9_VIS1;
117 if (strstr(si,"+vis2"))
118 {
119 OPENSSL_sparcv9cap_P |= SPARCV9_VIS2;
120 OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED;
121 return;
122 }
123 }
124#ifdef M_KEEP
125 /*
126 * Solaris libdevinfo.so.1 is effectively incomatible with
127 * libmalloc.so.1. Specifically, if application is linked with
128 * -lmalloc, it crashes upon startup with SIGSEGV in
129 * free(3LIBMALLOC) called by di_fini. Prior call to
130 * mallopt(M_KEEP,0) somehow helps... But not always...
131 */
132 if ((h = dlopen(NULL,RTLD_LAZY)))
133 {
134 union { void *p; int (*f)(int,int); } sym;
135 if ((sym.p = dlsym(h,"mallopt"))) (*sym.f)(M_KEEP,0);
136 dlclose(h);
137 }
138#endif
139 if ((h = dlopen("libdevinfo.so.1",RTLD_LAZY))) do
140 {
141 di_init_t di_init;
142 di_fini_t di_fini;
143 di_walk_node_t di_walk_node;
144 di_node_name_t di_node_name;
145 di_node_t root_node;
146
147 if (!DLLINK(h,di_init)) break;
148 if (!DLLINK(h,di_fini)) break;
149 if (!DLLINK(h,di_walk_node)) break;
150 if (!DLLINK(h,di_node_name)) break;
151
152 if ((root_node = (*di_init)("/",DINFOSUBTREE))!=DI_NODE_NIL)
153 {
154 (*di_walk_node)(root_node,DI_WALK_SIBFIRST,
155 di_node_name,walk_nodename);
156 (*di_fini)(root_node);
157 }
158 } while(0);
159
160 if (h) dlclose(h);
161 }
162
163#else
164
165static sigjmp_buf common_jmp;
166static void common_handler(int sig) { siglongjmp(common_jmp,sig); }
167
168void OPENSSL_cpuid_setup(void)
169 {
170 char *e;
171 struct sigaction common_act,ill_oact,bus_oact;
172 sigset_t all_masked,oset;
173 static int trigger=0;
174
175 if (trigger) return;
176 trigger=1;
177
178 if ((e=getenv("OPENSSL_sparcv9cap")))
179 {
180 OPENSSL_sparcv9cap_P=strtoul(e,NULL,0);
181 return;
182 }
183
184 /* Initial value, fits UltraSPARC-I&II... */
185 OPENSSL_sparcv9cap_P = SPARCV9_PREFER_FPU|SPARCV9_TICK_PRIVILEGED;
186
187 sigfillset(&all_masked);
188 sigdelset(&all_masked,SIGILL);
189 sigdelset(&all_masked,SIGTRAP);
190#ifdef SIGEMT
191 sigdelset(&all_masked,SIGEMT);
192#endif
193 sigdelset(&all_masked,SIGFPE);
194 sigdelset(&all_masked,SIGBUS);
195 sigdelset(&all_masked,SIGSEGV);
196 sigprocmask(SIG_SETMASK,&all_masked,&oset);
197
198 memset(&common_act,0,sizeof(common_act));
199 common_act.sa_handler = common_handler;
200 common_act.sa_mask = all_masked;
201
202 sigaction(SIGILL,&common_act,&ill_oact);
203 sigaction(SIGBUS,&common_act,&bus_oact);/* T1 fails 16-bit ldda [on Linux] */
204
205 if (sigsetjmp(common_jmp,1) == 0)
206 {
207 _sparcv9_rdtick();
208 OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED;
209 }
210
211 if (sigsetjmp(common_jmp,1) == 0)
212 {
213 _sparcv9_vis1_probe();
214 OPENSSL_sparcv9cap_P |= SPARCV9_VIS1;
215 /* detect UltraSPARC-Tx, see sparccpud.S for details... */
216 if (_sparcv9_vis1_instrument() >= 12)
217 OPENSSL_sparcv9cap_P &= ~(SPARCV9_VIS1|SPARCV9_PREFER_FPU);
218 else
219 {
220 _sparcv9_vis2_probe();
221 OPENSSL_sparcv9cap_P |= SPARCV9_VIS2;
222 }
223 }
224
225 if (sigsetjmp(common_jmp,1) == 0)
226 {
227 _sparcv9_fmadd_probe();
228 OPENSSL_sparcv9cap_P |= SPARCV9_FMADD;
229 }
230
231 sigaction(SIGBUS,&bus_oact,NULL);
232 sigaction(SIGILL,&ill_oact,NULL);
233
234 sigprocmask(SIG_SETMASK,&oset,NULL);
235 }
236
237#endif
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