/* * Copyright 2005-2020 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the Apache License 2.0 (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 #include #include #include #include #include #include #include #include "internal/cryptlib.h" #include "bn/bn_local.h" /* for definition of bn_mul_mont */ #include "sparc_arch.h" #if defined(__GNUC__) && defined(__linux) __attribute__ ((visibility("hidden"))) #endif unsigned int OPENSSL_sparcv9cap_P[2] = { SPARCV9_TICK_PRIVILEGED, 0 }; 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_vis3(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_fpu(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 (!(num & 1) && num >= 6) { if ((num & 15) == 0 && num <= 64 && (OPENSSL_sparcv9cap_P[1] & (CFR_MONTMUL | CFR_MONTSQR)) == (CFR_MONTMUL | CFR_MONTSQR)) { typedef int (*bn_mul_mont_f) (BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0); int bn_mul_mont_t4_8(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0); int bn_mul_mont_t4_16(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0); int bn_mul_mont_t4_24(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0); int bn_mul_mont_t4_32(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0); static const bn_mul_mont_f funcs[4] = { bn_mul_mont_t4_8, bn_mul_mont_t4_16, bn_mul_mont_t4_24, bn_mul_mont_t4_32 }; bn_mul_mont_f worker = funcs[num / 16 - 1]; if ((*worker) (rp, ap, bp, np, n0)) return 1; /* retry once and fall back */ if ((*worker) (rp, ap, bp, np, n0)) return 1; return bn_mul_mont_vis3(rp, ap, bp, np, n0, num); } if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3)) return bn_mul_mont_vis3(rp, ap, bp, np, n0, num); else if (num >= 8 && /* * bn_mul_mont_fpu doesn't use FMADD, we just use the * flag to detect when FPU path is preferable in cases * when current heuristics is unreliable. [it works * out because FMADD-capable processors where FPU * code path is undesirable are also VIS3-capable and * VIS3 code path takes precedence.] */ ( (OPENSSL_sparcv9cap_P[0] & SPARCV9_FMADD) || (OPENSSL_sparcv9cap_P[0] & (SPARCV9_PREFER_FPU | SPARCV9_VIS1)) == (SPARCV9_PREFER_FPU | SPARCV9_VIS1) )) return bn_mul_mont_fpu(rp, ap, bp, np, n0, num); } return bn_mul_mont_int(rp, ap, bp, np, n0, num); } unsigned long _sparcv9_rdtick(void); void _sparcv9_vis1_probe(void); unsigned long _sparcv9_vis1_instrument(void); void _sparcv9_vis2_probe(void); void _sparcv9_fmadd_probe(void); unsigned long _sparcv9_rdcfr(void); void _sparcv9_vis3_probe(void); void _sparcv9_fjaesx_probe(void); unsigned long _sparcv9_random(void); size_t _sparcv9_vis1_instrument_bus(unsigned int *, size_t); size_t _sparcv9_vis1_instrument_bus2(unsigned int *, size_t, size_t); uint32_t OPENSSL_rdtsc(void) { if (OPENSSL_sparcv9cap_P[0] & SPARCV9_TICK_PRIVILEGED) #if defined(__sun) && defined(__SVR4) return gethrtime(); #else return 0; #endif else return _sparcv9_rdtick(); } size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt) { if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) == SPARCV9_BLK) return _sparcv9_vis1_instrument_bus(out, cnt); else return 0; } size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max) { if ((OPENSSL_sparcv9cap_P[0] & (SPARCV9_TICK_PRIVILEGED | SPARCV9_BLK)) == SPARCV9_BLK) return _sparcv9_vis1_instrument_bus2(out, cnt, max); else return 0; } static sigjmp_buf common_jmp; static void common_handler(int sig) { siglongjmp(common_jmp, sig); } #if defined(__sun) && defined(__SVR4) # if defined(__GNUC__) && __GNUC__>=2 extern unsigned int getisax(unsigned int vec[], unsigned int sz) __attribute__ ((weak)); # elif defined(__SUNPRO_C) #pragma weak getisax extern unsigned int getisax(unsigned int vec[], unsigned int sz); # else static unsigned int (*getisax) (unsigned int vec[], unsigned int sz) = NULL; # endif #endif void OPENSSL_cpuid_setup(void) { char *e; struct sigaction common_act, ill_oact, bus_oact; sigset_t all_masked, oset; static int trigger = 0; if (trigger) return; trigger = 1; if ((e = getenv("OPENSSL_sparcv9cap"))) { OPENSSL_sparcv9cap_P[0] = strtoul(e, NULL, 0); if ((e = strchr(e, ':'))) OPENSSL_sparcv9cap_P[1] = strtoul(e + 1, NULL, 0); return; } #if defined(__sun) && defined(__SVR4) if (getisax != NULL) { unsigned int vec[2] = { 0, 0 }; if (getisax (vec,2)) { if (vec[0]&0x00020) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1; if (vec[0]&0x00040) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2; if (vec[0]&0x00080) OPENSSL_sparcv9cap_P[0] |= SPARCV9_BLK; if (vec[0]&0x00100) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD; if (vec[0]&0x00400) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3; if (vec[0]&0x01000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJHPCACE; if (vec[0]&0x02000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJDESX; if (vec[0]&0x08000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_IMA; if (vec[0]&0x10000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJAESX; if (vec[1]&0x00008) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS4; /* reconstruct %cfr copy */ OPENSSL_sparcv9cap_P[1] = (vec[0]>>17)&0x3ff; OPENSSL_sparcv9cap_P[1] |= (OPENSSL_sparcv9cap_P[1]&CFR_MONTMUL)<<1; if (vec[0]&0x20000000) OPENSSL_sparcv9cap_P[1] |= CFR_CRC32C; if (vec[1]&0x00000020) OPENSSL_sparcv9cap_P[1] |= CFR_XMPMUL; if (vec[1]&0x00000040) OPENSSL_sparcv9cap_P[1] |= CFR_XMONTMUL|CFR_XMONTSQR; /* Some heuristics */ /* all known VIS2-capable CPUs have unprivileged tick counter */ if (OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS2) OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED; OPENSSL_sparcv9cap_P[0] |= SPARCV9_PREFER_FPU; /* detect UltraSPARC-Tx, see sparccpud.S for details... */ if ((OPENSSL_sparcv9cap_P[0]&SPARCV9_VIS1) && _sparcv9_vis1_instrument() >= 12) OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU); } if (sizeof(size_t) == 8) OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK; return; } #endif /* Initial value, fits UltraSPARC-I&II... */ OPENSSL_sparcv9cap_P[0] = SPARCV9_PREFER_FPU | SPARCV9_TICK_PRIVILEGED; 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); sigprocmask(SIG_SETMASK, &all_masked, &oset); memset(&common_act, 0, sizeof(common_act)); common_act.sa_handler = common_handler; common_act.sa_mask = all_masked; sigaction(SIGILL, &common_act, &ill_oact); sigaction(SIGBUS, &common_act, &bus_oact); /* T1 fails 16-bit ldda [on * Linux] */ if (sigsetjmp(common_jmp, 1) == 0) { _sparcv9_rdtick(); OPENSSL_sparcv9cap_P[0] &= ~SPARCV9_TICK_PRIVILEGED; } if (sigsetjmp(common_jmp, 1) == 0) { _sparcv9_vis1_probe(); OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1 | SPARCV9_BLK; /* detect UltraSPARC-Tx, see sparccpud.S for details... */ if (_sparcv9_vis1_instrument() >= 12) OPENSSL_sparcv9cap_P[0] &= ~(SPARCV9_VIS1 | SPARCV9_PREFER_FPU); else { _sparcv9_vis2_probe(); OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2; } } if (sigsetjmp(common_jmp, 1) == 0) { _sparcv9_fmadd_probe(); OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD; } /* * VIS3 flag is tested independently from VIS1, unlike VIS2 that is, * because VIS3 defines even integer instructions. */ if (sigsetjmp(common_jmp, 1) == 0) { _sparcv9_vis3_probe(); OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3; } if (sigsetjmp(common_jmp, 1) == 0) { _sparcv9_fjaesx_probe(); OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJAESX; } /* * In wait for better solution _sparcv9_rdcfr is masked by * VIS3 flag, because it goes to uninterruptible endless * loop on UltraSPARC II running Solaris. Things might be * different on Linux... */ if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3) && sigsetjmp(common_jmp, 1) == 0) { OPENSSL_sparcv9cap_P[1] = (unsigned int)_sparcv9_rdcfr(); } sigaction(SIGBUS, &bus_oact, NULL); sigaction(SIGILL, &ill_oact, NULL); sigprocmask(SIG_SETMASK, &oset, NULL); if (sizeof(size_t) == 8) OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK; # ifdef __linux else { int ret = syscall(340); if (ret >= 0 && ret & 1) OPENSSL_sparcv9cap_P[0] |= SPARCV9_64BIT_STACK; } # endif }