mirror of
https://github.com/openssl/openssl.git
synced 2024-11-21 01:15:20 +08:00
135 lines
3.3 KiB
C
135 lines
3.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <openssl/bn.h>
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#define SPARCV9_TICK_PRIVILEGED (1<<0)
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#define SPARCV9_PREFER_FPU (1<<1)
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#define SPARCV9_VIS1 (1<<2)
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#define SPARCV9_VIS2 (1<<3) /* reserved */
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#define SPARCV9_FMADD (1<<4) /* reserved for SPARC64 V */
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static int OPENSSL_sparcv9cap_P=SPARCV9_TICK_PRIVILEGED;
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int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np,const BN_ULONG *n0, int num)
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{
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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);
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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);
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if ((OPENSSL_sparcv9cap_P&(SPARCV9_PREFER_FPU|SPARCV9_VIS1)) ==
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(SPARCV9_PREFER_FPU|SPARCV9_VIS1))
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return bn_mul_mont_fpu(rp,ap,bp,np,n0,num);
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else
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return bn_mul_mont_int(rp,ap,bp,np,n0,num);
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}
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unsigned long OPENSSL_rdtsc(void)
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{
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unsigned long _sparcv9_rdtick(void);
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if (OPENSSL_sparcv9cap_P&SPARCV9_TICK_PRIVILEGED)
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#if defined(__sun) && defined(__SVR4)
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return gethrtime();
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#else
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return 0;
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#endif
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else
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return _sparcv9_rdtick();
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}
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#if defined(__sun) && defined(__SVR4)
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#include <dlfcn.h>
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#include <libdevinfo.h>
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typedef di_node_t (*di_init_t)(const char *,uint_t);
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typedef void (*di_fini_t)(di_node_t);
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typedef char * (*di_node_name_t)(di_node_t);
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typedef int (*di_walk_node_t)(di_node_t,uint_t,di_node_name_t,int (*)(di_node_t,di_node_name_t));
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#define DLLINK(h,name) (name=(name##_t)dlsym((h),#name))
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static int walk_nodename(di_node_t node, di_node_name_t di_node_name)
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{
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char *name = (*di_node_name)(node);
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/* This is expected to catch all UltraSPARC flavors prior T1 */
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if (!strcmp (name,"SUNW,UltraSPARC") ||
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!strncmp(name,"SUNW,UltraSPARC-I",17)) /* covers II,III,IV */
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{
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OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU|SPARCV9_VIS1;
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/* %tick is privileged only on UltraSPARC-I/II, but not IIe */
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if (name[14]!='\0' && name[17]!='\0' && name[18]!='\0')
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OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED;
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return DI_WALK_TERMINATE;
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}
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/* This is expected to catch remaining UltraSPARCs, such as T1 */
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else if (!strncmp(name,"SUNW,UltraSPARC",15))
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{
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OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED;
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return DI_WALK_TERMINATE;
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}
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return DI_WALK_CONTINUE;
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}
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void OPENSSL_cpuid_setup(void)
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{
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void *h;
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char *e;
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static int trigger=0;
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if (trigger) return;
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trigger=1;
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if ((e=getenv("OPENSSL_sparcv9cap")))
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{
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OPENSSL_sparcv9cap_P=strtoul(e,NULL,0);
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return;
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}
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if ((h = dlopen("libdevinfo.so.1",RTLD_LAZY))) do
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{
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di_init_t di_init;
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di_fini_t di_fini;
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di_walk_node_t di_walk_node;
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di_node_name_t di_node_name;
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di_node_t root_node;
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if (!DLLINK(h,di_init)) break;
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if (!DLLINK(h,di_fini)) break;
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if (!DLLINK(h,di_walk_node)) break;
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if (!DLLINK(h,di_node_name)) break;
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if ((root_node = (*di_init)("/",DINFOSUBTREE))!=DI_NODE_NIL)
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{
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(*di_walk_node)(root_node,DI_WALK_SIBFIRST,
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di_node_name,walk_nodename);
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(*di_fini)(root_node);
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}
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} while(0);
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if (h) dlclose(h);
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}
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#else
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void OPENSSL_cpuid_setup(void)
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{
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char *e;
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if ((e=getenv("OPENSSL_sparcv9cap")))
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{
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OPENSSL_sparcv9cap_P=strtoul(env,NULL,0);
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return;
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}
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/* For now we assume that the rest supports UltraSPARC-I* only */
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OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU|SPARCV9_VIS1;
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}
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#endif
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