6 #include <openssl/bn.h>
8 #define PPC_FPU64 (1<<0)
10 static int OPENSSL_ppccap_P = 0;
12 static sigset_t all_masked;
14 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)
16 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);
17 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);
19 if (sizeof(size_t)==4)
21 #if (defined(__APPLE__) && defined(__MACH__))
22 if ((OPENSSL_ppccap_P&PPC_FPU64))
23 return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
25 /* boundary of 32 was experimentally determined on
26 Linux 2.6.22, might have to be adjusted on AIX... */
27 if ((num>=32) && (OPENSSL_ppccap_P&PPC_FPU64))
32 sigprocmask(SIG_SETMASK,&all_masked,&oset);
33 ret=bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
34 sigprocmask(SIG_SETMASK,&oset,NULL);
40 else if ((OPENSSL_ppccap_P&PPC_FPU64))
41 /* this is a "must" on Power 6, but run-time detection
42 * is not implemented yet... */
43 return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
45 return bn_mul_mont_int(rp,ap,bp,np,n0,num);
48 static sigjmp_buf ill_jmp;
49 static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
51 void OPENSSL_cpuid_setup(void)
55 sigfillset(&all_masked);
56 sigdelset(&all_masked,SIGSEGV);
57 sigdelset(&all_masked,SIGILL);
59 if ((e=getenv("OPENSSL_ppccap")))
61 OPENSSL_ppccap_P=strtoul(e,NULL,0);
65 if (sizeof(size_t)==4)
67 struct sigaction ill_oact,ill_act;
70 memset(&ill_act,0,sizeof(ill_act));
71 ill_act.sa_handler = ill_handler;
72 sigfillset(&ill_act.sa_mask);
73 sigdelset(&ill_act.sa_mask,SIGILL);
74 sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
75 sigaction (SIGILL,&ill_act,&ill_oact);
76 if (sigsetjmp(ill_jmp,0) == 0)
78 OPENSSL_ppc64_probe();
79 OPENSSL_ppccap_P |= PPC_FPU64;
83 OPENSSL_ppccap_P &= ~PPC_FPU64;
85 sigaction (SIGILL,&ill_oact,NULL);
86 sigprocmask(SIG_SETMASK,&oset,NULL);