diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/sparcv9cap.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/sparcv9cap.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/sparcv9cap.c b/openssl-1.1.0h/crypto/sparcv9cap.c new file mode 100644 index 0000000..61d0334 --- /dev/null +++ b/openssl-1.1.0h/crypto/sparcv9cap.c @@ -0,0 +1,294 @@ +/* + * Copyright 2005-2016 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 <sys/time.h> +#include <unistd.h> +#include <openssl/bn.h> + +#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); + +unsigned long 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 uninterruptable 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 +} |