6 #include <openssl/bn.h>
8 #define PPC_FPU64 (1<<0)
9 #define PPC_ALTIVEC (1<<1)
11 static int OPENSSL_ppccap_P = 0;
13 static sigset_t all_masked;
15 #ifdef OPENSSL_BN_ASM_MONT
16 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)
18 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);
19 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);
21 if (sizeof(size_t)==4)
23 #if (defined(__APPLE__) && defined(__MACH__))
24 if ((OPENSSL_ppccap_P&PPC_FPU64))
25 return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
27 /* boundary of 32 was experimentally determined on
28 Linux 2.6.22, might have to be adjusted on AIX... */
29 if (num>=32 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
34 sigprocmask(SIG_SETMASK,&all_masked,&oset);
35 ret=bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
36 sigprocmask(SIG_SETMASK,&oset,NULL);
42 else if ((OPENSSL_ppccap_P&PPC_FPU64))
43 /* this is a "must" on POWER6, but run-time detection
44 * is not implemented yet... */
45 return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
47 return bn_mul_mont_int(rp,ap,bp,np,n0,num);
51 static sigjmp_buf ill_jmp;
52 static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
54 void OPENSSL_ppc64_probe(void);
56 void OPENSSL_cpuid_setup(void)
59 struct sigaction ill_oact,ill_act;
66 sigfillset(&all_masked);
67 sigdelset(&all_masked,SIGILL);
68 sigdelset(&all_masked,SIGTRAP);
70 sigdelset(&all_masked,SIGEMT);
72 sigdelset(&all_masked,SIGFPE);
73 sigdelset(&all_masked,SIGBUS);
74 sigdelset(&all_masked,SIGSEGV);
76 if ((e=getenv("OPENSSL_ppccap")))
78 OPENSSL_ppccap_P=strtoul(e,NULL,0);
84 memset(&ill_act,0,sizeof(ill_act));
85 ill_act.sa_handler = ill_handler;
86 ill_act.sa_mask = all_masked;
88 sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
89 sigaction(SIGILL,&ill_act,&ill_oact);
91 if (sizeof(size_t)==4)
93 if (sigsetjmp(ill_jmp,1) == 0)
95 OPENSSL_ppc64_probe();
96 OPENSSL_ppccap_P |= PPC_FPU64;
102 * Wanted code detecting POWER6 CPU and setting PPC_FPU64
106 if (sigsetjmp(ill_jmp,1) == 0)
108 OPENSSL_altivec_probe();
109 OPENSSL_ppccap_P |= PPC_ALTIVEC;
112 sigaction (SIGILL,&ill_oact,NULL);
113 sigprocmask(SIG_SETMASK,&oset,NULL);