diff options
Diffstat (limited to 'crypto/sparcv9cap.c')
| -rw-r--r-- | crypto/sparcv9cap.c | 65 |
1 files changed, 63 insertions, 2 deletions
diff --git a/crypto/sparcv9cap.c b/crypto/sparcv9cap.c index 5f31d20bd..1d820f4c0 100644 --- a/crypto/sparcv9cap.c +++ b/crypto/sparcv9cap.c @@ -1,6 +1,8 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <setjmp.h> +#include <signal.h> #include <sys/time.h> #include <openssl/bn.h> @@ -9,6 +11,7 @@ #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) @@ -23,10 +26,12 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_U return bn_mul_mont_int(rp,ap,bp,np,n0,num); } +unsigned long _sparcv9_rdtick(void); +unsigned long _sparcv9_rdwrasi(unsigned long); +void _sparcv9_vis1_probe(void); + unsigned long OPENSSL_rdtsc(void) { - unsigned long _sparcv9_rdtick(void); - if (OPENSSL_sparcv9cap_P&SPARCV9_TICK_PRIVILEGED) #if defined(__sun) && defined(__SVR4) return gethrtime(); @@ -137,9 +142,16 @@ void OPENSSL_cpuid_setup(void) #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; + unsigned long oasi; + int sig; if ((e=getenv("OPENSSL_sparcv9cap"))) { @@ -149,6 +161,55 @@ void OPENSSL_cpuid_setup(void) /* For now we assume that the rest supports UltraSPARC-I* only */ OPENSSL_sparcv9cap_P |= SPARCV9_PREFER_FPU|SPARCV9_VIS1; + + 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 */ + oasi = _sparcv9_rdwrasi(0xD2); /* ASI_FL16_P */ + if ((sig=sigsetjmp(common_jmp,0)) == 0) + { + _sparcv9_vis1_probe(); + OPENSSL_sparcv9cap_P |= SPARCV9_VIS1; + } + else if (sig == SIGBUS) /* T1 fails 16-bit ldda */ + { + OPENSSL_sparcv9cap_P &= ~SPARCV9_PREFER_FPU; + } + else + { + OPENSSL_sparcv9cap_P &= ~SPARCV9_VIS1; + } + _sparcv9_rdwrasi(oasi); + sigaction(SIGBUS,&bus_oact,NULL); + sigaction(SIGILL,&ill_oact,NULL); + + sigaction(SIGILL,&common_act,&ill_oact); + if (sigsetjmp(common_jmp,0) == 0) + { + _sparcv9_rdtick(); + OPENSSL_sparcv9cap_P &= ~SPARCV9_TICK_PRIVILEGED; + } + else + { + OPENSSL_sparcv9cap_P |= SPARCV9_TICK_PRIVILEGED; + } + sigaction(SIGILL,&ill_oact,NULL); + + sigprocmask(SIG_SETMASK,&oset,NULL); } #endif |