/* * Copyright 2009-2016 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <setjmp.h> #include <signal.h> #include <unistd.h> #if defined(__linux) || defined(_AIX) # include <sys/utsname.h> #endif #if defined(_AIX53) /* defined even on post-5.3 */ # include <sys/systemcfg.h> # if !defined(__power_set) # define __power_set(a) (_system_configuration.implementation & (a)) # endif #endif #if defined(__APPLE__) && defined(__MACH__) # include <sys/types.h> # include <sys/sysctl.h> #endif #include <openssl/crypto.h> #include <openssl/bn.h> #include "ppc_arch.h" unsigned int OPENSSL_ppccap_P = 0; static sigset_t all_masked; #ifdef OPENSSL_BN_ASM_MONT 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) { 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); 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); if (sizeof(size_t) == 4) { # if 1 || (defined(__APPLE__) && defined(__MACH__)) if (num >= 8 && (num & 3) == 0 && (OPENSSL_ppccap_P & PPC_FPU64)) return bn_mul_mont_fpu64(rp, ap, bp, np, n0, num); # else /* * boundary of 32 was experimentally determined on Linux 2.6.22, * might have to be adjusted on AIX... */ if (num >= 32 && (num & 3) == 0 && (OPENSSL_ppccap_P & PPC_FPU64)) { sigset_t oset; int ret; sigprocmask(SIG_SETMASK, &all_masked, &oset); ret = bn_mul_mont_fpu64(rp, ap, bp, np, n0, num); sigprocmask(SIG_SETMASK, &oset, NULL); return ret; } # endif } else if ((OPENSSL_ppccap_P & PPC_FPU64)) /* * this is a "must" on POWER6, but run-time detection is not * implemented yet... */ return bn_mul_mont_fpu64(rp, ap, bp, np, n0, num); return bn_mul_mont_int(rp, ap, bp, np, n0, num); } #endif void sha256_block_p8(void *ctx, const void *inp, size_t len); void sha256_block_ppc(void *ctx, const void *inp, size_t len); void sha256_block_data_order(void *ctx, const void *inp, size_t len) { OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha256_block_p8(ctx, inp, len) : sha256_block_ppc(ctx, inp, len); } void sha512_block_p8(void *ctx, const void *inp, size_t len); void sha512_block_ppc(void *ctx, const void *inp, size_t len); void sha512_block_data_order(void *ctx, const void *inp, size_t len) { OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha512_block_p8(ctx, inp, len) : sha512_block_ppc(ctx, inp, len); } #ifndef OPENSSL_NO_CHACHA void ChaCha20_ctr32_int(unsigned char *out, const unsigned char *inp, size_t len, const unsigned int key[8], const unsigned int counter[4]); void ChaCha20_ctr32_vmx(unsigned char *out, const unsigned char *inp, size_t len, const unsigned int key[8], const unsigned int counter[4]); void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp, size_t len, const unsigned int key[8], const unsigned int counter[4]) { OPENSSL_ppccap_P & PPC_ALTIVEC ? ChaCha20_ctr32_vmx(out, inp, len, key, counter) : ChaCha20_ctr32_int(out, inp, len, key, counter); } #endif #ifndef OPENSSL_NO_POLY1305 void poly1305_init_int(void *ctx, const unsigned char key[16]); void poly1305_blocks(void *ctx, const unsigned char *inp, size_t len, unsigned int padbit); void poly1305_emit(void *ctx, unsigned char mac[16], const unsigned int nonce[4]); void poly1305_init_fpu(void *ctx, const unsigned char key[16]); void poly1305_blocks_fpu(void *ctx, const unsigned char *inp, size_t len, unsigned int padbit); void poly1305_emit_fpu(void *ctx, unsigned char mac[16], const unsigned int nonce[4]); int poly1305_init(void *ctx, const unsigned char key[16], void *func[2]) { if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P & PPC_FPU)) { poly1305_init_fpu(ctx, key); func[0] = poly1305_blocks_fpu; func[1] = poly1305_emit_fpu; } else { poly1305_init_int(ctx, key); func[0] = poly1305_blocks; func[1] = poly1305_emit; } return 1; } #endif static sigjmp_buf ill_jmp; static void ill_handler(int sig) { siglongjmp(ill_jmp, sig); } void OPENSSL_fpu_probe(void); void OPENSSL_ppc64_probe(void); void OPENSSL_altivec_probe(void); void OPENSSL_crypto207_probe(void); void OPENSSL_madd300_probe(void); /* * Use a weak reference to getauxval() so we can use it if it is available * but don't break the build if it is not. Note that this is *link-time* * feature detection, not *run-time*. In other words if we link with * symbol present, it's expected to be present even at run-time. */ #if defined(__GNUC__) && __GNUC__>=2 && defined(__ELF__) extern unsigned long getauxval(unsigned long type) __attribute__ ((weak)); #else static unsigned long (*getauxval) (unsigned long) = NULL; #endif /* I wish <sys/auxv.h> was universally available */ #define HWCAP 16 /* AT_HWCAP */ #define HWCAP_PPC64 (1U << 30) #define HWCAP_ALTIVEC (1U << 28) #define HWCAP_FPU (1U << 27) #define HWCAP_POWER6_EXT (1U << 9) #define HWCAP_VSX (1U << 7) #define HWCAP2 26 /* AT_HWCAP2 */ #define HWCAP_VEC_CRYPTO (1U << 25) #define HWCAP_ARCH_3_00 (1U << 23) # if defined(__GNUC__) && __GNUC__>=2 __attribute__ ((constructor)) # endif void OPENSSL_cpuid_setup(void) { char *e; struct sigaction ill_oact, ill_act; sigset_t oset; static int trigger = 0; if (trigger) return; trigger = 1; if ((e = getenv("OPENSSL_ppccap"))) { OPENSSL_ppccap_P = strtoul(e, NULL, 0); return; } OPENSSL_ppccap_P = 0; #if defined(_AIX) OPENSSL_ppccap_P |= PPC_FPU; if (sizeof(size_t) == 4) { struct utsname uts; # if defined(_SC_AIX_KERNEL_BITMODE) if (sysconf(_SC_AIX_KERNEL_BITMODE) != 64) return; # endif if (uname(&uts) != 0 || atoi(uts.version) < 6) return; } # if defined(__power_set) /* * Value used in __power_set is a single-bit 1<<n one denoting * specific processor class. Incidentally 0xffffffff<<n can be * used to denote specific processor and its successors. */ if (sizeof(size_t) == 4) { /* In 32-bit case PPC_FPU64 is always fastest [if option] */ if (__power_set(0xffffffffU<<13)) /* POWER5 and later */ OPENSSL_ppccap_P |= PPC_FPU64; } else { /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */ if (__power_set(0x1U<<14)) /* POWER6 */ OPENSSL_ppccap_P |= PPC_FPU64; } if (__power_set(0xffffffffU<<14)) /* POWER6 and later */ OPENSSL_ppccap_P |= PPC_ALTIVEC; if (__power_set(0xffffffffU<<16)) /* POWER8 and later */ OPENSSL_ppccap_P |= PPC_CRYPTO207; if (__power_set(0xffffffffU<<17)) /* POWER9 and later */ OPENSSL_ppccap_P |= PPC_MADD300; return; # endif #endif #if defined(__APPLE__) && defined(__MACH__) OPENSSL_ppccap_P |= PPC_FPU; { int val; size_t len = sizeof(val); if (sysctlbyname("hw.optional.64bitops", &val, &len, NULL, 0) == 0) { if (val) OPENSSL_ppccap_P |= PPC_FPU64; } len = sizeof(val); if (sysctlbyname("hw.optional.altivec", &val, &len, NULL, 0) == 0) { if (val) OPENSSL_ppccap_P |= PPC_ALTIVEC; } return; } #endif if (getauxval != NULL) { unsigned long hwcap = getauxval(HWCAP); if (hwcap & HWCAP_FPU) { OPENSSL_ppccap_P |= PPC_FPU; if (sizeof(size_t) == 4) { /* In 32-bit case PPC_FPU64 is always fastest [if option] */ if (hwcap & HWCAP_PPC64) OPENSSL_ppccap_P |= PPC_FPU64; } else { /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */ if (hwcap & HWCAP_POWER6_EXT) OPENSSL_ppccap_P |= PPC_FPU64; } } if (hwcap & HWCAP_ALTIVEC) { OPENSSL_ppccap_P |= PPC_ALTIVEC; if ((hwcap & HWCAP_VSX) && (getauxval(HWCAP2) & HWCAP_VEC_CRYPTO)) OPENSSL_ppccap_P |= PPC_CRYPTO207; } if (hwcap & HWCAP_ARCH_3_00) { OPENSSL_ppccap_P |= PPC_MADD300; } return; } sigfillset(&all_masked); sigdelset(&all_masked, SIGILL); sigdelset(&all_masked, SIGTRAP); #ifdef SIGEMT sigdelset(&all_masked, SIGEMT); #endif sigdelset(&all_masked, SIGFPE); sigdelset(&all_masked, SIGBUS); sigdelset(&all_masked, SIGSEGV); memset(&ill_act, 0, sizeof(ill_act)); ill_act.sa_handler = ill_handler; ill_act.sa_mask = all_masked; sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset); sigaction(SIGILL, &ill_act, &ill_oact); if (sigsetjmp(ill_jmp,1) == 0) { OPENSSL_fpu_probe(); OPENSSL_ppccap_P |= PPC_FPU; if (sizeof(size_t) == 4) { #ifdef __linux struct utsname uts; if (uname(&uts) == 0 && strcmp(uts.machine, "ppc64") == 0) #endif if (sigsetjmp(ill_jmp, 1) == 0) { OPENSSL_ppc64_probe(); OPENSSL_ppccap_P |= PPC_FPU64; } } else { /* * Wanted code detecting POWER6 CPU and setting PPC_FPU64 */ } } if (sigsetjmp(ill_jmp, 1) == 0) { OPENSSL_altivec_probe(); OPENSSL_ppccap_P |= PPC_ALTIVEC; if (sigsetjmp(ill_jmp, 1) == 0) { OPENSSL_crypto207_probe(); OPENSSL_ppccap_P |= PPC_CRYPTO207; } } if (sigsetjmp(ill_jmp, 1) == 0) { OPENSSL_madd300_probe(); OPENSSL_ppccap_P |= PPC_MADD300; } sigaction(SIGILL, &ill_oact, NULL); sigprocmask(SIG_SETMASK, &oset, NULL); }