14ec2eca9Schristos /* 2856fa3afSchristos * Copyright 2009-2021 The OpenSSL Project Authors. All Rights Reserved. 34ec2eca9Schristos * 44ec2eca9Schristos * Licensed under the OpenSSL license (the "License"). You may not use 54ec2eca9Schristos * this file except in compliance with the License. You can obtain a copy 64ec2eca9Schristos * in the file LICENSE in the source distribution or at 74ec2eca9Schristos * https://www.openssl.org/source/license.html 84ec2eca9Schristos */ 94ec2eca9Schristos 1013ce5681Schristos #include <stdio.h> 1113ce5681Schristos #include <stdlib.h> 1213ce5681Schristos #include <string.h> 1313ce5681Schristos #include <setjmp.h> 1413ce5681Schristos #include <signal.h> 1521bfa713Schristos #include <unistd.h> 167fa80bafSspz #if defined(__linux) || defined(_AIX) 177fa80bafSspz # include <sys/utsname.h> 187fa80bafSspz #endif 194ec2eca9Schristos #if defined(_AIX53) /* defined even on post-5.3 */ 204ec2eca9Schristos # include <sys/systemcfg.h> 214ec2eca9Schristos # if !defined(__power_set) 224ec2eca9Schristos # define __power_set(a) (_system_configuration.implementation & (a)) 234ec2eca9Schristos # endif 244ec2eca9Schristos #endif 254ec2eca9Schristos #if defined(__APPLE__) && defined(__MACH__) 264ec2eca9Schristos # include <sys/types.h> 274ec2eca9Schristos # include <sys/sysctl.h> 284ec2eca9Schristos #endif 29d4503398Srin #if defined(__NetBSD__) 30d4503398Srin # include <sys/param.h> 31d4503398Srin # include <sys/sysctl.h> 32d4503398Srin #endif 337fa80bafSspz #include <openssl/crypto.h> 3413ce5681Schristos #include <openssl/bn.h> 35e7ccb6d1Schristos #include <internal/cryptlib.h> 36cb006352Schristos #include <crypto/chacha.h> 37cb006352Schristos #include "bn/bn_local.h" 3813ce5681Schristos 397fa80bafSspz #include "ppc_arch.h" 4013ce5681Schristos 417fa80bafSspz unsigned int OPENSSL_ppccap_P = 0; 4213ce5681Schristos 4313ce5681Schristos static sigset_t all_masked; 4413ce5681Schristos 4513ce5681Schristos #ifdef OPENSSL_BN_ASM_MONT 46d572d25fSspz int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, 47d572d25fSspz const BN_ULONG *np, const BN_ULONG *n0, int num) 4813ce5681Schristos { 49d572d25fSspz int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, 50d572d25fSspz const BN_ULONG *np, const BN_ULONG *n0, int num); 51e7ccb6d1Schristos int bn_mul4x_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, 52e7ccb6d1Schristos const BN_ULONG *np, const BN_ULONG *n0, int num); 5313ce5681Schristos 54e7ccb6d1Schristos if (num < 4) 55e7ccb6d1Schristos return 0; 56e7ccb6d1Schristos 57e7ccb6d1Schristos if ((num & 3) == 0) 58e7ccb6d1Schristos return bn_mul4x_mont_int(rp, ap, bp, np, n0, num); 59e7ccb6d1Schristos 60d572d25fSspz /* 61e7ccb6d1Schristos * There used to be [optional] call to bn_mul_mont_fpu64 here, 62e7ccb6d1Schristos * but above subroutine is faster on contemporary processors. 63e7ccb6d1Schristos * Formulation means that there might be old processors where 64e7ccb6d1Schristos * FPU code path would be faster, POWER6 perhaps, but there was 65e7ccb6d1Schristos * no opportunity to figure it out... 66d572d25fSspz */ 6713ce5681Schristos 6813ce5681Schristos return bn_mul_mont_int(rp, ap, bp, np, n0, num); 6913ce5681Schristos } 7013ce5681Schristos #endif 7113ce5681Schristos 727fa80bafSspz #ifdef DONT_USE_SHA256_FROM_LIBC 737fa80bafSspz void sha256_block_p8(void *ctx, const void *inp, size_t len); 747fa80bafSspz void sha256_block_ppc(void *ctx, const void *inp, size_t len); 75e7ccb6d1Schristos void sha256_block_data_order(void *ctx, const void *inp, size_t len); 767fa80bafSspz void sha256_block_data_order(void *ctx, const void *inp, size_t len) 777fa80bafSspz { 787fa80bafSspz OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha256_block_p8(ctx, inp, len) : 797fa80bafSspz sha256_block_ppc(ctx, inp, len); 807fa80bafSspz } 817fa80bafSspz #endif 827fa80bafSspz 837fa80bafSspz #ifdef DONT_USE_SHA512_FROM_LIBC 847fa80bafSspz void sha512_block_p8(void *ctx, const void *inp, size_t len); 857fa80bafSspz void sha512_block_ppc(void *ctx, const void *inp, size_t len); 86e7ccb6d1Schristos void sha512_block_data_order(void *ctx, const void *inp, size_t len); 877fa80bafSspz void sha512_block_data_order(void *ctx, const void *inp, size_t len) 887fa80bafSspz { 897fa80bafSspz OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha512_block_p8(ctx, inp, len) : 907fa80bafSspz sha512_block_ppc(ctx, inp, len); 917fa80bafSspz } 927fa80bafSspz #endif 937fa80bafSspz 944ec2eca9Schristos #ifndef OPENSSL_NO_CHACHA 954ec2eca9Schristos void ChaCha20_ctr32_int(unsigned char *out, const unsigned char *inp, 964ec2eca9Schristos size_t len, const unsigned int key[8], 974ec2eca9Schristos const unsigned int counter[4]); 984ec2eca9Schristos void ChaCha20_ctr32_vmx(unsigned char *out, const unsigned char *inp, 994ec2eca9Schristos size_t len, const unsigned int key[8], 1004ec2eca9Schristos const unsigned int counter[4]); 101e7ccb6d1Schristos void ChaCha20_ctr32_vsx(unsigned char *out, const unsigned char *inp, 102e7ccb6d1Schristos size_t len, const unsigned int key[8], 103e7ccb6d1Schristos const unsigned int counter[4]); 1044ec2eca9Schristos void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp, 1054ec2eca9Schristos size_t len, const unsigned int key[8], 1064ec2eca9Schristos const unsigned int counter[4]) 1074ec2eca9Schristos { 108e7ccb6d1Schristos OPENSSL_ppccap_P & PPC_CRYPTO207 109e7ccb6d1Schristos ? ChaCha20_ctr32_vsx(out, inp, len, key, counter) 110e7ccb6d1Schristos : OPENSSL_ppccap_P & PPC_ALTIVEC 1114ec2eca9Schristos ? ChaCha20_ctr32_vmx(out, inp, len, key, counter) 1124ec2eca9Schristos : ChaCha20_ctr32_int(out, inp, len, key, counter); 1134ec2eca9Schristos } 1144ec2eca9Schristos #endif 1154ec2eca9Schristos 1164ec2eca9Schristos #ifndef OPENSSL_NO_POLY1305 1174ec2eca9Schristos void poly1305_init_int(void *ctx, const unsigned char key[16]); 1184ec2eca9Schristos void poly1305_blocks(void *ctx, const unsigned char *inp, size_t len, 1194ec2eca9Schristos unsigned int padbit); 1204ec2eca9Schristos void poly1305_emit(void *ctx, unsigned char mac[16], 1214ec2eca9Schristos const unsigned int nonce[4]); 1224ec2eca9Schristos void poly1305_init_fpu(void *ctx, const unsigned char key[16]); 1234ec2eca9Schristos void poly1305_blocks_fpu(void *ctx, const unsigned char *inp, size_t len, 1244ec2eca9Schristos unsigned int padbit); 1254ec2eca9Schristos void poly1305_emit_fpu(void *ctx, unsigned char mac[16], 1264ec2eca9Schristos const unsigned int nonce[4]); 127e7ccb6d1Schristos int poly1305_init(void *ctx, const unsigned char key[16], void *func[2]); 1284ec2eca9Schristos int poly1305_init(void *ctx, const unsigned char key[16], void *func[2]) 1294ec2eca9Schristos { 1304ec2eca9Schristos if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P & PPC_FPU)) { 1314ec2eca9Schristos poly1305_init_fpu(ctx, key); 132e7ccb6d1Schristos func[0] = (void*)(uintptr_t)poly1305_blocks_fpu; 133e7ccb6d1Schristos func[1] = (void*)(uintptr_t)poly1305_emit_fpu; 1344ec2eca9Schristos } else { 1354ec2eca9Schristos poly1305_init_int(ctx, key); 136e7ccb6d1Schristos func[0] = (void*)(uintptr_t)poly1305_blocks; 137e7ccb6d1Schristos func[1] = (void*)(uintptr_t)poly1305_emit; 1384ec2eca9Schristos } 1394ec2eca9Schristos return 1; 1404ec2eca9Schristos } 1414ec2eca9Schristos #endif 1424ec2eca9Schristos 143e7ccb6d1Schristos #ifdef ECP_NISTZ256_ASM 144e7ccb6d1Schristos void ecp_nistz256_mul_mont(unsigned long res[4], const unsigned long a[4], 145e7ccb6d1Schristos const unsigned long b[4]); 146e7ccb6d1Schristos 147e7ccb6d1Schristos void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4]); 148e7ccb6d1Schristos void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4]) 149e7ccb6d1Schristos { 150e7ccb6d1Schristos static const unsigned long RR[] = { 0x0000000000000003U, 151e7ccb6d1Schristos 0xfffffffbffffffffU, 152e7ccb6d1Schristos 0xfffffffffffffffeU, 153e7ccb6d1Schristos 0x00000004fffffffdU }; 154e7ccb6d1Schristos 155e7ccb6d1Schristos ecp_nistz256_mul_mont(res, in, RR); 156e7ccb6d1Schristos } 157e7ccb6d1Schristos 158e7ccb6d1Schristos void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4]); 159e7ccb6d1Schristos void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4]) 160e7ccb6d1Schristos { 161e7ccb6d1Schristos static const unsigned long one[] = { 1, 0, 0, 0 }; 162e7ccb6d1Schristos 163e7ccb6d1Schristos ecp_nistz256_mul_mont(res, in, one); 164e7ccb6d1Schristos } 165e7ccb6d1Schristos #endif 166e7ccb6d1Schristos 16713ce5681Schristos static sigjmp_buf ill_jmp; 168d572d25fSspz static void ill_handler(int sig) 169d572d25fSspz { 170d572d25fSspz siglongjmp(ill_jmp, sig); 171d572d25fSspz } 17213ce5681Schristos 1734ec2eca9Schristos void OPENSSL_fpu_probe(void); 17413ce5681Schristos void OPENSSL_ppc64_probe(void); 17521bfa713Schristos void OPENSSL_altivec_probe(void); 1767fa80bafSspz void OPENSSL_crypto207_probe(void); 1774ec2eca9Schristos void OPENSSL_madd300_probe(void); 17813ce5681Schristos 17992d83a12Schristos long OPENSSL_rdtsc_mftb(void); 18092d83a12Schristos long OPENSSL_rdtsc_mfspr268(void); 18192d83a12Schristos 18292d83a12Schristos uint32_t OPENSSL_rdtsc(void) 18392d83a12Schristos { 18492d83a12Schristos if (OPENSSL_ppccap_P & PPC_MFTB) 18592d83a12Schristos return OPENSSL_rdtsc_mftb(); 18692d83a12Schristos else if (OPENSSL_ppccap_P & PPC_MFSPR268) 18792d83a12Schristos return OPENSSL_rdtsc_mfspr268(); 18892d83a12Schristos else 18992d83a12Schristos return 0; 19092d83a12Schristos } 19192d83a12Schristos 19292d83a12Schristos size_t OPENSSL_instrument_bus_mftb(unsigned int *, size_t); 19392d83a12Schristos size_t OPENSSL_instrument_bus_mfspr268(unsigned int *, size_t); 19492d83a12Schristos 19592d83a12Schristos size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt) 19692d83a12Schristos { 19792d83a12Schristos if (OPENSSL_ppccap_P & PPC_MFTB) 19892d83a12Schristos return OPENSSL_instrument_bus_mftb(out, cnt); 19992d83a12Schristos else if (OPENSSL_ppccap_P & PPC_MFSPR268) 20092d83a12Schristos return OPENSSL_instrument_bus_mfspr268(out, cnt); 20192d83a12Schristos else 20292d83a12Schristos return 0; 20392d83a12Schristos } 20492d83a12Schristos 20592d83a12Schristos size_t OPENSSL_instrument_bus2_mftb(unsigned int *, size_t, size_t); 20692d83a12Schristos size_t OPENSSL_instrument_bus2_mfspr268(unsigned int *, size_t, size_t); 20792d83a12Schristos 20892d83a12Schristos size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max) 20992d83a12Schristos { 21092d83a12Schristos if (OPENSSL_ppccap_P & PPC_MFTB) 21192d83a12Schristos return OPENSSL_instrument_bus2_mftb(out, cnt, max); 21292d83a12Schristos else if (OPENSSL_ppccap_P & PPC_MFSPR268) 21392d83a12Schristos return OPENSSL_instrument_bus2_mfspr268(out, cnt, max); 21492d83a12Schristos else 21592d83a12Schristos return 0; 21692d83a12Schristos } 21792d83a12Schristos 21892d83a12Schristos #if defined(__GLIBC__) && defined(__GLIBC_PREREQ) 21992d83a12Schristos # if __GLIBC_PREREQ(2, 16) 22092d83a12Schristos # include <sys/auxv.h> 22192d83a12Schristos # define OSSL_IMPLEMENT_GETAUXVAL 222*e1f0537eSchristos # elif defined(__ANDROID_API__) 223*e1f0537eSchristos /* see https://developer.android.google.cn/ndk/guides/cpu-features */ 224*e1f0537eSchristos # if __ANDROID_API__ >= 18 225*e1f0537eSchristos # include <sys/auxv.h> 226*e1f0537eSchristos # define OSSL_IMPLEMENT_GETAUXVAL 227*e1f0537eSchristos # endif 22892d83a12Schristos # endif 2294ec2eca9Schristos #endif 2304ec2eca9Schristos 231856fa3afSchristos #if defined(__FreeBSD__) 232856fa3afSchristos # include <sys/param.h> 233856fa3afSchristos # if __FreeBSD_version >= 1200000 234856fa3afSchristos # include <sys/auxv.h> 235856fa3afSchristos # define OSSL_IMPLEMENT_GETAUXVAL 236856fa3afSchristos 237856fa3afSchristos static unsigned long getauxval(unsigned long key) 238856fa3afSchristos { 239856fa3afSchristos unsigned long val = 0ul; 240856fa3afSchristos 241856fa3afSchristos if (elf_aux_info((int)key, &val, sizeof(val)) != 0) 242856fa3afSchristos return 0ul; 243856fa3afSchristos 244856fa3afSchristos return val; 245856fa3afSchristos } 246856fa3afSchristos # endif 247856fa3afSchristos #endif 248856fa3afSchristos 2494ec2eca9Schristos /* I wish <sys/auxv.h> was universally available */ 2504ec2eca9Schristos #define HWCAP 16 /* AT_HWCAP */ 2514ec2eca9Schristos #define HWCAP_PPC64 (1U << 30) 2524ec2eca9Schristos #define HWCAP_ALTIVEC (1U << 28) 2534ec2eca9Schristos #define HWCAP_FPU (1U << 27) 2544ec2eca9Schristos #define HWCAP_POWER6_EXT (1U << 9) 2554ec2eca9Schristos #define HWCAP_VSX (1U << 7) 2564ec2eca9Schristos 2574ec2eca9Schristos #define HWCAP2 26 /* AT_HWCAP2 */ 2584ec2eca9Schristos #define HWCAP_VEC_CRYPTO (1U << 25) 2594ec2eca9Schristos #define HWCAP_ARCH_3_00 (1U << 23) 2604ec2eca9Schristos 2614ec2eca9Schristos # if defined(__GNUC__) && __GNUC__>=2 2624ec2eca9Schristos __attribute__ ((constructor)) 2634ec2eca9Schristos # endif 26413ce5681Schristos void OPENSSL_cpuid_setup(void) 26513ce5681Schristos { 26613ce5681Schristos char *e; 26713ce5681Schristos struct sigaction ill_oact, ill_act; 26813ce5681Schristos sigset_t oset; 26913ce5681Schristos static int trigger = 0; 27013ce5681Schristos 271d572d25fSspz if (trigger) 272d572d25fSspz return; 27313ce5681Schristos trigger = 1; 27413ce5681Schristos 2754ec2eca9Schristos if ((e = getenv("OPENSSL_ppccap"))) { 2764ec2eca9Schristos OPENSSL_ppccap_P = strtoul(e, NULL, 0); 2774ec2eca9Schristos return; 2784ec2eca9Schristos } 2794ec2eca9Schristos 2804ec2eca9Schristos OPENSSL_ppccap_P = 0; 2814ec2eca9Schristos 2824ec2eca9Schristos #if defined(_AIX) 2834ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU; 2844ec2eca9Schristos 2854ec2eca9Schristos if (sizeof(size_t) == 4) { 2864ec2eca9Schristos struct utsname uts; 2874ec2eca9Schristos # if defined(_SC_AIX_KERNEL_BITMODE) 2884ec2eca9Schristos if (sysconf(_SC_AIX_KERNEL_BITMODE) != 64) 2894ec2eca9Schristos return; 2904ec2eca9Schristos # endif 2914ec2eca9Schristos if (uname(&uts) != 0 || atoi(uts.version) < 6) 2924ec2eca9Schristos return; 2934ec2eca9Schristos } 2944ec2eca9Schristos 2954ec2eca9Schristos # if defined(__power_set) 2964ec2eca9Schristos /* 2974ec2eca9Schristos * Value used in __power_set is a single-bit 1<<n one denoting 2984ec2eca9Schristos * specific processor class. Incidentally 0xffffffff<<n can be 2994ec2eca9Schristos * used to denote specific processor and its successors. 3004ec2eca9Schristos */ 3014ec2eca9Schristos if (sizeof(size_t) == 4) { 3024ec2eca9Schristos /* In 32-bit case PPC_FPU64 is always fastest [if option] */ 3034ec2eca9Schristos if (__power_set(0xffffffffU<<13)) /* POWER5 and later */ 3044ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU64; 3054ec2eca9Schristos } else { 3064ec2eca9Schristos /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */ 3074ec2eca9Schristos if (__power_set(0x1U<<14)) /* POWER6 */ 3084ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU64; 3094ec2eca9Schristos } 3104ec2eca9Schristos 3114ec2eca9Schristos if (__power_set(0xffffffffU<<14)) /* POWER6 and later */ 3124ec2eca9Schristos OPENSSL_ppccap_P |= PPC_ALTIVEC; 3134ec2eca9Schristos 3144ec2eca9Schristos if (__power_set(0xffffffffU<<16)) /* POWER8 and later */ 3154ec2eca9Schristos OPENSSL_ppccap_P |= PPC_CRYPTO207; 3164ec2eca9Schristos 3174ec2eca9Schristos if (__power_set(0xffffffffU<<17)) /* POWER9 and later */ 3184ec2eca9Schristos OPENSSL_ppccap_P |= PPC_MADD300; 3194ec2eca9Schristos 3204ec2eca9Schristos return; 3214ec2eca9Schristos # endif 3224ec2eca9Schristos #endif 3234ec2eca9Schristos 3244ec2eca9Schristos #if defined(__APPLE__) && defined(__MACH__) 3254ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU; 3264ec2eca9Schristos 3274ec2eca9Schristos { 3284ec2eca9Schristos int val; 3294ec2eca9Schristos size_t len = sizeof(val); 3304ec2eca9Schristos 3314ec2eca9Schristos if (sysctlbyname("hw.optional.64bitops", &val, &len, NULL, 0) == 0) { 3324ec2eca9Schristos if (val) 3334ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU64; 3344ec2eca9Schristos } 3354ec2eca9Schristos 3364ec2eca9Schristos len = sizeof(val); 3374ec2eca9Schristos if (sysctlbyname("hw.optional.altivec", &val, &len, NULL, 0) == 0) { 3384ec2eca9Schristos if (val) 3394ec2eca9Schristos OPENSSL_ppccap_P |= PPC_ALTIVEC; 3404ec2eca9Schristos } 3414ec2eca9Schristos 3424ec2eca9Schristos return; 3434ec2eca9Schristos } 3444ec2eca9Schristos #endif 3454ec2eca9Schristos 34692d83a12Schristos #ifdef OSSL_IMPLEMENT_GETAUXVAL 34792d83a12Schristos { 3484ec2eca9Schristos unsigned long hwcap = getauxval(HWCAP); 349380ea7e6Schristos unsigned long hwcap2 = getauxval(HWCAP2); 3504ec2eca9Schristos 3514ec2eca9Schristos if (hwcap & HWCAP_FPU) { 3524ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU; 3534ec2eca9Schristos 3544ec2eca9Schristos if (sizeof(size_t) == 4) { 3554ec2eca9Schristos /* In 32-bit case PPC_FPU64 is always fastest [if option] */ 3564ec2eca9Schristos if (hwcap & HWCAP_PPC64) 3574ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU64; 3584ec2eca9Schristos } else { 3594ec2eca9Schristos /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */ 3604ec2eca9Schristos if (hwcap & HWCAP_POWER6_EXT) 3614ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU64; 3624ec2eca9Schristos } 3634ec2eca9Schristos } 3644ec2eca9Schristos 3654ec2eca9Schristos if (hwcap & HWCAP_ALTIVEC) { 3664ec2eca9Schristos OPENSSL_ppccap_P |= PPC_ALTIVEC; 3674ec2eca9Schristos 368380ea7e6Schristos if ((hwcap & HWCAP_VSX) && (hwcap2 & HWCAP_VEC_CRYPTO)) 3694ec2eca9Schristos OPENSSL_ppccap_P |= PPC_CRYPTO207; 3704ec2eca9Schristos } 3714ec2eca9Schristos 372380ea7e6Schristos if (hwcap2 & HWCAP_ARCH_3_00) { 3734ec2eca9Schristos OPENSSL_ppccap_P |= PPC_MADD300; 3744ec2eca9Schristos } 3754ec2eca9Schristos } 37692d83a12Schristos #endif 3774ec2eca9Schristos 37813ce5681Schristos sigfillset(&all_masked); 37913ce5681Schristos sigdelset(&all_masked, SIGILL); 38013ce5681Schristos sigdelset(&all_masked, SIGTRAP); 38113ce5681Schristos #ifdef SIGEMT 38213ce5681Schristos sigdelset(&all_masked, SIGEMT); 38313ce5681Schristos #endif 38413ce5681Schristos sigdelset(&all_masked, SIGFPE); 38513ce5681Schristos sigdelset(&all_masked, SIGBUS); 38613ce5681Schristos sigdelset(&all_masked, SIGSEGV); 38713ce5681Schristos 38813ce5681Schristos memset(&ill_act, 0, sizeof(ill_act)); 38913ce5681Schristos ill_act.sa_handler = ill_handler; 39013ce5681Schristos ill_act.sa_mask = all_masked; 39113ce5681Schristos 39213ce5681Schristos sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset); 39313ce5681Schristos sigaction(SIGILL, &ill_act, &ill_oact); 39413ce5681Schristos 39592d83a12Schristos #ifndef OSSL_IMPLEMENT_GETAUXVAL 396d4503398Srin # ifdef __NetBSD__ 397d4503398Srin int error, val; 398d4503398Srin size_t len = sizeof(val); 399d4503398Srin 400d4503398Srin /* 40190ed1af2Sriastradh * If machdep.fpu_present == 0, FPU is absent and emulated by 40290ed1af2Sriastradh * software. In that case, using FPU instructions hurts rather 40390ed1af2Sriastradh * than helps performance, and the software is unlikely to run in 40490ed1af2Sriastradh * constant time so it would expose us to timing side channel 40590ed1af2Sriastradh * attacks. So don't do it! 406d4503398Srin */ 407d4503398Srin error = sysctlbyname("machdep.fpu_present", &val, &len, NULL, 0); 408d4503398Srin if (error != 0 || (error == 0 && val != 0)) 409d4503398Srin # endif 4104ec2eca9Schristos if (sigsetjmp(ill_jmp,1) == 0) { 4114ec2eca9Schristos OPENSSL_fpu_probe(); 4124ec2eca9Schristos OPENSSL_ppccap_P |= PPC_FPU; 4134ec2eca9Schristos 414d572d25fSspz if (sizeof(size_t) == 4) { 4157fa80bafSspz # ifdef __linux 4167fa80bafSspz struct utsname uts; 4177fa80bafSspz if (uname(&uts) == 0 && strcmp(uts.machine, "ppc64") == 0) 4187fa80bafSspz # endif 419d572d25fSspz if (sigsetjmp(ill_jmp, 1) == 0) { 42013ce5681Schristos OPENSSL_ppc64_probe(); 42113ce5681Schristos OPENSSL_ppccap_P |= PPC_FPU64; 42213ce5681Schristos } 423d572d25fSspz } else { 42413ce5681Schristos /* 42513ce5681Schristos * Wanted code detecting POWER6 CPU and setting PPC_FPU64 42613ce5681Schristos */ 42713ce5681Schristos } 4284ec2eca9Schristos } 42913ce5681Schristos 430d572d25fSspz if (sigsetjmp(ill_jmp, 1) == 0) { 43113ce5681Schristos OPENSSL_altivec_probe(); 43213ce5681Schristos OPENSSL_ppccap_P |= PPC_ALTIVEC; 4337fa80bafSspz if (sigsetjmp(ill_jmp, 1) == 0) { 4347fa80bafSspz OPENSSL_crypto207_probe(); 4357fa80bafSspz OPENSSL_ppccap_P |= PPC_CRYPTO207; 4367fa80bafSspz } 43713ce5681Schristos } 43813ce5681Schristos 4394ec2eca9Schristos if (sigsetjmp(ill_jmp, 1) == 0) { 4404ec2eca9Schristos OPENSSL_madd300_probe(); 4414ec2eca9Schristos OPENSSL_ppccap_P |= PPC_MADD300; 4424ec2eca9Schristos } 44392d83a12Schristos #endif 44492d83a12Schristos 44592d83a12Schristos if (sigsetjmp(ill_jmp, 1) == 0) { 44692d83a12Schristos OPENSSL_rdtsc_mftb(); 44792d83a12Schristos OPENSSL_ppccap_P |= PPC_MFTB; 44892d83a12Schristos } else if (sigsetjmp(ill_jmp, 1) == 0) { 44992d83a12Schristos OPENSSL_rdtsc_mfspr268(); 45092d83a12Schristos OPENSSL_ppccap_P |= PPC_MFSPR268; 45192d83a12Schristos } 4524ec2eca9Schristos 45313ce5681Schristos sigaction(SIGILL, &ill_oact, NULL); 45413ce5681Schristos sigprocmask(SIG_SETMASK, &oset, NULL); 45513ce5681Schristos } 456