projects / thirdparty / openssl.git / blame
| Commit | Line | Data |
|---|---|---|
| b4b48a10 AP |
1 | #include <stdio.h> |
| 2 | #include <stdlib.h> | |
| 3 | #include <string.h> | |
| 4 | #include <setjmp.h> | |
| 5 | #include <signal.h> | |
| 6 | #include <openssl/bn.h> | |
| 7 | ||
| 8 | #define PPC_FPU64 (1<<0) | |
| 9 | ||
| 10 | static int OPENSSL_ppccap_P = 0; | |
| 11 | ||
| 12 | static sigset_t all_masked; | |
| 13 | ||
| d741cf22 | 14 | #ifdef OPENSSL_BN_ASM_MONT |
| b4b48a10 AP |
15 | 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 | { | |
| 17 | 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); | |
| 18 | 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 | ||
| 20 | if (sizeof(size_t)==4) | |
| 21 | { | |
| 22 | #if (defined(__APPLE__) && defined(__MACH__)) | |
| 23 | if ((OPENSSL_ppccap_P&PPC_FPU64)) | |
| 24 | return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num); | |
| 25 | #else | |
| 26 | /* boundary of 32 was experimentally determined on | |
| 27 | Linux 2.6.22, might have to be adjusted on AIX... */ | |
| 28 | if ((num>=32) && (OPENSSL_ppccap_P&PPC_FPU64)) | |
| 29 | { | |
| 30 | sigset_t oset; | |
| 31 | int ret; | |
| 32 | ||
| 33 | sigprocmask(SIG_SETMASK,&all_masked,&oset); | |
| 34 | ret=bn_mul_mont_fpu64(rp,ap,bp,np,n0,num); | |
| 35 | sigprocmask(SIG_SETMASK,&oset,NULL); | |
| 36 | ||
| 37 | return ret; | |
| 38 | } | |
| 39 | #endif | |
| 40 | } | |
| 41 | else if ((OPENSSL_ppccap_P&PPC_FPU64)) | |
| 42 | /* this is a "must" on Power 6, but run-time detection | |
| 43 | * is not implemented yet... */ | |
| 44 | return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num); | |
| 45 | ||
| 46 | return bn_mul_mont_int(rp,ap,bp,np,n0,num); | |
| 47 | } | |
| d741cf22 | 48 | #endif |
| b4b48a10 AP |
49 | |
| 50 | static sigjmp_buf ill_jmp; | |
| 51 | static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); } | |
| 52 | ||
| 53 | void OPENSSL_cpuid_setup(void) | |
| 54 | { | |
| 55 | char *e; | |
| 56 | ||
| 57 | sigfillset(&all_masked); | |
| 58 | sigdelset(&all_masked,SIGSEGV); | |
| 59 | sigdelset(&all_masked,SIGILL); | |
| d741cf22 AP |
60 | sigdelset(&all_masked,SIGBUS); |
| 61 | sigdelset(&all_masked,SIGFPE); | |
| b4b48a10 AP |
62 | |
| 63 | if ((e=getenv("OPENSSL_ppccap"))) | |
| 64 | { | |
| 65 | OPENSSL_ppccap_P=strtoul(e,NULL,0); | |
| 66 | return; | |
| 67 | } | |
| 68 | ||
| 69 | if (sizeof(size_t)==4) | |
| 70 | { | |
| 71 | struct sigaction ill_oact,ill_act; | |
| 72 | sigset_t oset; | |
| 73 | ||
| 74 | memset(&ill_act,0,sizeof(ill_act)); | |
| 75 | ill_act.sa_handler = ill_handler; | |
| d741cf22 | 76 | ill_act.sa_mask = all_masked; |
| b4b48a10 AP |
77 | sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset); |
| 78 | sigaction (SIGILL,&ill_act,&ill_oact); | |
| 79 | if (sigsetjmp(ill_jmp,0) == 0) | |
| 80 | { | |
| 81 | OPENSSL_ppc64_probe(); | |
| 82 | OPENSSL_ppccap_P |= PPC_FPU64; | |
| 83 | } | |
| 84 | else | |
| 85 | { | |
| 86 | OPENSSL_ppccap_P &= ~PPC_FPU64; | |
| 87 | } | |
| 88 | sigaction (SIGILL,&ill_oact,NULL); | |
| 89 | sigprocmask(SIG_SETMASK,&oset,NULL); | |
| 90 | } | |
| 91 | } |