diff options
Diffstat (limited to 'crypto/sparcv9cap.c')
| -rw-r--r-- | crypto/sparcv9cap.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/crypto/sparcv9cap.c b/crypto/sparcv9cap.c new file mode 100644 index 000000000000..43b3ac6f81c6 --- /dev/null +++ b/crypto/sparcv9cap.c @@ -0,0 +1,237 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <setjmp.h> +#include <signal.h> +#include <sys/time.h> +#include <openssl/bn.h> + +#define SPARCV9_TICK_PRIVILEGED (1<<0) +#define SPARCV9_PREFER_FPU (1<<1) +#define SPARCV9_VIS1 (1<<2) +#define SPARCV9_VIS2 (1<<3) /* reserved */ +#define SPARCV9_FMADD (1<<4) /* reserved for SPARC64 V */ + +static int OPENSSL_sparcv9cap_P=SPARCV9_TICK_PRIVILEGED; + +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) + { + 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); + 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); + + if (num>=8 && !(num&1) && + (OPENSSL_sparcv9cap_P&(SPARCV9_PREFER_FPU|SPARCV9_VIS1)) == + (SPARCV9_PREFER_FPU|SPARCV9_VIS1)) + return bn_mul_mont_fpu(rp,ap,bp,np,n0,num); + else + return bn_mul_mont_int(rp,ap,bp,np,n0,num); + } + +unsigned long _sparcv9_rdtick(void); +void _sparcv9_vis1_probe(void); +unsigned long _sparcv9_vis1_instrument(void); +void _sparcv9_vis2_probe(void); +void _sparcv9_fmadd_probe(void); + +unsigned long OPENSSL_rdtsc(void) + { + if (OPENSSL_sparcv9cap_P&SPARCV9_TICK_PRIVILEGED) +#if defined(__sun) && defined(__SVR4) + return gethrtime(); +#else + return 0; +#endif + else + return _sparcv9_rdtick(); + } + +#if 0 && defined(__sun) && defined(__SVR4) +/* This code path is disabled, because of incompatibility of + * libdevinfo.so.1 and libmalloc.so.1 (see below for details) + */ +#include <malloc.h> +#include <dlfcn.h> +#include <libdevinfo.h> +#include <sys/systeminfo.h> + +typedef di_node_t (*di_init_t)(const char *,uint_t); +typedef void (*di_fini_t)(di_node_t); +typedef char * (*di_node_name_t)(di_node_t); +typedef int (*di_walk_node_t)(di_node_t,uint_t,di_node_name_t,int (*)(di_node_t,di_node_name_t)); + +#define DLLINK(h,name) (name=(name##_t)dlsym((h),#name)) + +static int walk_nodename(di_node_t node, di_node_name_t di_node_name) + { + char *name = (*di_node_name)(node); + + /* This is expected to catch all UltraSPARC flavors prior T1 */ + if (!strcmp (name,"SUNW,UltraSPARC") || + !strncmp(name,"SUNW,UltraSPARC-I",17)) /* covers II,III,IV */ + { + OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU|SPARCV9_VIS1; + + /* %tick is privileged only on UltraSPARC-I/II, but not IIe */ + if (name[14]!='\0' && name[17]!='\0' && name[18]!='\0') + OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED; + + return DI_WALK_TERMINATE; + } + /* This is expected to catch remaining UltraSPARCs, such as T1 */ + else if (!strncmp(name,"SUNW,UltraSPARC",15)) + { + OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED; + + return DI_WALK_TERMINATE; + } + + return DI_WALK_CONTINUE; + } + +void OPENSSL_cpuid_setup(void) + { + void *h; + char *e,si[256]; + static int trigger=0; + + if (trigger) return; + trigger=1; + + if ((e=getenv("OPENSSL_sparcv9cap"))) + { + OPENSSL_sparcv9cap_P=strtoul(e,NULL,0); + return; + } + + if (sysinfo(SI_MACHINE,si,sizeof(si))>0) + { + if (strcmp(si,"sun4v")) + /* FPU is preferred for all CPUs, but US-T1/2 */ + OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU; + } + + if (sysinfo(SI_ISALIST,si,sizeof(si))>0) + { + if (strstr(si,"+vis")) + OPENSSL_sparcv9cap_P |= SPARCV9_VIS1; + if (strstr(si,"+vis2")) + { + OPENSSL_sparcv9cap_P |= SPARCV9_VIS2; + OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED; + return; + } + } +#ifdef M_KEEP + /* + * Solaris libdevinfo.so.1 is effectively incomatible with + * libmalloc.so.1. Specifically, if application is linked with + * -lmalloc, it crashes upon startup with SIGSEGV in + * free(3LIBMALLOC) called by di_fini. Prior call to + * mallopt(M_KEEP,0) somehow helps... But not always... + */ + if ((h = dlopen(NULL,RTLD_LAZY))) + { + union { void *p; int (*f)(int,int); } sym; + if ((sym.p = dlsym(h,"mallopt"))) (*sym.f)(M_KEEP,0); + dlclose(h); + } +#endif + if ((h = dlopen("libdevinfo.so.1",RTLD_LAZY))) do + { + di_init_t di_init; + di_fini_t di_fini; + di_walk_node_t di_walk_node; + di_node_name_t di_node_name; + di_node_t root_node; + + if (!DLLINK(h,di_init)) break; + if (!DLLINK(h,di_fini)) break; + if (!DLLINK(h,di_walk_node)) break; + if (!DLLINK(h,di_node_name)) break; + + if ((root_node = (*di_init)("/",DINFOSUBTREE))!=DI_NODE_NIL) + { + (*di_walk_node)(root_node,DI_WALK_SIBFIRST, + di_node_name,walk_nodename); + (*di_fini)(root_node); + } + } while(0); + + if (h) dlclose(h); + } + +#else + +static sigjmp_buf common_jmp; +static void common_handler(int sig) { siglongjmp(common_jmp,sig); } + +void OPENSSL_cpuid_setup(void) + { + char *e; + struct sigaction common_act,ill_oact,bus_oact; + sigset_t all_masked,oset; + static int trigger=0; + + if (trigger) return; + trigger=1; + + if ((e=getenv("OPENSSL_sparcv9cap"))) + { + OPENSSL_sparcv9cap_P=strtoul(e,NULL,0); + return; + } + + /* Initial value, fits UltraSPARC-I&II... */ + OPENSSL_sparcv9cap_P = SPARCV9_PREFER_FPU|SPARCV9_TICK_PRIVILEGED; + + sigfillset(&all_masked); + sigdelset(&all_masked,SIGILL); + sigdelset(&all_masked,SIGTRAP); +#ifdef SIGEMT + sigdelset(&all_masked,SIGEMT); +#endif + sigdelset(&all_masked,SIGFPE); + sigdelset(&all_masked,SIGBUS); + sigdelset(&all_masked,SIGSEGV); + sigprocmask(SIG_SETMASK,&all_masked,&oset); + + memset(&common_act,0,sizeof(common_act)); + common_act.sa_handler = common_handler; + common_act.sa_mask = all_masked; + + sigaction(SIGILL,&common_act,&ill_oact); + sigaction(SIGBUS,&common_act,&bus_oact);/* T1 fails 16-bit ldda [on Linux] */ + + if (sigsetjmp(common_jmp,1) == 0) + { + _sparcv9_rdtick(); + OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED; + } + + if (sigsetjmp(common_jmp,1) == 0) + { + _sparcv9_vis1_probe(); + OPENSSL_sparcv9cap_P |= SPARCV9_VIS1; + /* detect UltraSPARC-Tx, see sparccpud.S for details... */ + if (_sparcv9_vis1_instrument() >= 12) + OPENSSL_sparcv9cap_P &= ~(SPARCV9_VIS1|SPARCV9_PREFER_FPU); + else + { + _sparcv9_vis2_probe(); + OPENSSL_sparcv9cap_P |= SPARCV9_VIS2; + } + } + + if (sigsetjmp(common_jmp,1) == 0) + { + _sparcv9_fmadd_probe(); + OPENSSL_sparcv9cap_P |= SPARCV9_FMADD; + } + + sigaction(SIGBUS,&bus_oact,NULL); + sigaction(SIGILL,&ill_oact,NULL); + + sigprocmask(SIG_SETMASK,&oset,NULL); + } + +#endif |