8 #include <openssl/bn.h>
10 #define PPC_FPU64 (1<<0)
11 #define PPC_ALTIVEC (1<<1)
13 static int OPENSSL_ppccap_P = 0;
15 static sigset_t all_masked;
17 #ifdef OPENSSL_BN_ASM_MONT
18 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)
20 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);
21 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);
23 if (sizeof(size_t)==4)
25 #if (defined(__APPLE__) && defined(__MACH__))
26 if (num>=8 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
27 return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
29 /* boundary of 32 was experimentally determined on
30 Linux 2.6.22, might have to be adjusted on AIX... */
31 if (num>=32 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
36 sigprocmask(SIG_SETMASK,&all_masked,&oset);
37 ret=bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
38 sigprocmask(SIG_SETMASK,&oset,NULL);
44 else if ((OPENSSL_ppccap_P&PPC_FPU64))
45 /* this is a "must" on POWER6, but run-time detection
46 * is not implemented yet... */
47 return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
49 return bn_mul_mont_int(rp,ap,bp,np,n0,num);
53 static sigjmp_buf ill_jmp;
54 static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
56 void OPENSSL_ppc64_probe(void);
57 void OPENSSL_altivec_probe(void);
59 void OPENSSL_cpuid_setup(void)
62 struct sigaction ill_oact,ill_act;
69 sigfillset(&all_masked);
70 sigdelset(&all_masked,SIGILL);
71 sigdelset(&all_masked,SIGTRAP);
73 sigdelset(&all_masked,SIGEMT);
75 sigdelset(&all_masked,SIGFPE);
76 sigdelset(&all_masked,SIGBUS);
77 sigdelset(&all_masked,SIGSEGV);
79 if ((e=getenv("OPENSSL_ppccap")))
81 OPENSSL_ppccap_P=strtoul(e,NULL,0);
89 # if defined(_SC_AIX_KERNEL_BITMODE)
90 && sysconf(_SC_AIX_KERNEL_BITMODE)!=64
96 memset(&ill_act,0,sizeof(ill_act));
97 ill_act.sa_handler = ill_handler;
98 ill_act.sa_mask = all_masked;
100 sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
101 sigaction(SIGILL,&ill_act,&ill_oact);
103 if (sizeof(size_t)==4)
105 if (sigsetjmp(ill_jmp,1) == 0)
107 OPENSSL_ppc64_probe();
108 OPENSSL_ppccap_P |= PPC_FPU64;
114 * Wanted code detecting POWER6 CPU and setting PPC_FPU64
118 if (sigsetjmp(ill_jmp,1) == 0)
120 OPENSSL_altivec_probe();
121 OPENSSL_ppccap_P |= PPC_ALTIVEC;
124 sigaction (SIGILL,&ill_oact,NULL);
125 sigprocmask(SIG_SETMASK,&oset,NULL);