| /* |
| * Copyright 2005-2021 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 "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 |
| } |