mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
116 lines
2.6 KiB
C
116 lines
2.6 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <setjmp.h>
|
|
#include <signal.h>
|
|
#include <crypto.h>
|
|
#include <openssl/bn.h>
|
|
|
|
#define PPC_FPU64 (1<<0)
|
|
#define PPC_ALTIVEC (1<<1)
|
|
|
|
static int OPENSSL_ppccap_P = 0;
|
|
|
|
static sigset_t all_masked;
|
|
|
|
#ifdef OPENSSL_BN_ASM_MONT
|
|
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_fpu64(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 (sizeof(size_t)==4)
|
|
{
|
|
#if (defined(__APPLE__) && defined(__MACH__))
|
|
if (num>=8 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
|
|
return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
|
|
#else
|
|
/* boundary of 32 was experimentally determined on
|
|
Linux 2.6.22, might have to be adjusted on AIX... */
|
|
if (num>=32 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
|
|
{
|
|
sigset_t oset;
|
|
int ret;
|
|
|
|
sigprocmask(SIG_SETMASK,&all_masked,&oset);
|
|
ret=bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
|
|
sigprocmask(SIG_SETMASK,&oset,NULL);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
}
|
|
else if ((OPENSSL_ppccap_P&PPC_FPU64))
|
|
/* this is a "must" on POWER6, but run-time detection
|
|
* is not implemented yet... */
|
|
return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
|
|
|
|
return bn_mul_mont_int(rp,ap,bp,np,n0,num);
|
|
}
|
|
#endif
|
|
|
|
static sigjmp_buf ill_jmp;
|
|
static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
|
|
|
|
void OPENSSL_ppc64_probe(void);
|
|
|
|
void OPENSSL_cpuid_setup(void)
|
|
{
|
|
char *e;
|
|
struct sigaction ill_oact,ill_act;
|
|
sigset_t oset;
|
|
static int trigger=0;
|
|
|
|
if (trigger) return;
|
|
trigger=1;
|
|
|
|
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);
|
|
|
|
if ((e=getenv("OPENSSL_ppccap")))
|
|
{
|
|
OPENSSL_ppccap_P=strtoul(e,NULL,0);
|
|
return;
|
|
}
|
|
|
|
OPENSSL_ppccap_P = 0;
|
|
|
|
memset(&ill_act,0,sizeof(ill_act));
|
|
ill_act.sa_handler = ill_handler;
|
|
ill_act.sa_mask = all_masked;
|
|
|
|
sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
|
|
sigaction(SIGILL,&ill_act,&ill_oact);
|
|
|
|
if (sizeof(size_t)==4)
|
|
{
|
|
if (sigsetjmp(ill_jmp,1) == 0)
|
|
{
|
|
OPENSSL_ppc64_probe();
|
|
OPENSSL_ppccap_P |= PPC_FPU64;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Wanted code detecting POWER6 CPU and setting PPC_FPU64
|
|
*/
|
|
}
|
|
|
|
if (sigsetjmp(ill_jmp,1) == 0)
|
|
{
|
|
OPENSSL_altivec_probe();
|
|
OPENSSL_ppccap_P |= PPC_ALTIVEC;
|
|
}
|
|
|
|
sigaction (SIGILL,&ill_oact,NULL);
|
|
sigprocmask(SIG_SETMASK,&oset,NULL);
|
|
}
|