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
238