7 #include <openssl/bn.h>
9 #define PPC_FPU64 (1<<0)
10 #define PPC_ALTIVEC (1<<1)
12 static int OPENSSL_ppccap_P = 0;
14 static sigset_t all_masked;
16 #ifdef OPENSSL_BN_ASM_MONT
17 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)
19 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);
20 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);
22 if (sizeof(size_t)==4)
24 #if (defined(__APPLE__) && defined(__MACH__))
25 if (num>=8 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
26 return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
28 /* boundary of 32 was experimentally determined on
29 Linux 2.6.22, might have to be adjusted on AIX... */
30 if (num>=32 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
35 sigprocmask(SIG_SETMASK,&all_masked,&oset);
36 ret=bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
37 sigprocmask(SIG_SETMASK,&oset,NULL);
43 else if ((OPENSSL_ppccap_P&PPC_FPU64))
44 /* this is a "must" on POWER6, but run-time detection
45 * is not implemented yet... */
46 return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
48 return bn_mul_mont_int(rp,ap,bp,np,n0,num);
52 static sigjmp_buf ill_jmp;
53 static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
55 void OPENSSL_ppc64_probe(void);
57 void OPENSSL_cpuid_setup(void)
60 struct sigaction ill_oact,ill_act;
67 sigfillset(&all_masked);
68 sigdelset(&all_masked,SIGILL);
69 sigdelset(&all_masked,SIGTRAP);
71 sigdelset(&all_masked,SIGEMT);
73 sigdelset(&all_masked,SIGFPE);
74 sigdelset(&all_masked,SIGBUS);
75 sigdelset(&all_masked,SIGSEGV);
77 if ((e=getenv("OPENSSL_ppccap")))
79 OPENSSL_ppccap_P=strtoul(e,NULL,0);
85 memset(&ill_act,0,sizeof(ill_act));
86 ill_act.sa_handler = ill_handler;
87 ill_act.sa_mask = all_masked;
89 sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
90 sigaction(SIGILL,&ill_act,&ill_oact);
92 if (sizeof(size_t)==4)
94 if (sigsetjmp(ill_jmp,1) == 0)
96 OPENSSL_ppc64_probe();
97 OPENSSL_ppccap_P |= PPC_FPU64;
103 * Wanted code detecting POWER6 CPU and setting PPC_FPU64
107 if (sigsetjmp(ill_jmp,1) == 0)
109 OPENSSL_altivec_probe();
110 OPENSSL_ppccap_P |= PPC_ALTIVEC;
113 sigaction (SIGILL,&ill_oact,NULL);
114 sigprocmask(SIG_SETMASK,&oset,NULL);