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openssl/crypto/sparcv9cap.c
Matt Caswell 41525ed628 Ensure we get all the right defines for AES assembler in FIPS module 
There are various C macro definitions that are passed via the compiler
to enable AES assembler optimisation. We need to make sure that these
defines are also passed during compilation of the FIPS module.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9038)
2019-06-03 12:56:53 +01:00

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/*
* Copyright 2005-2016 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 <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 "sparc_arch.h"
#if defined(__GNUC__) && defined(__linux)
__attribute__ ((visibility("hidden")))
#endif
unsigned int OPENSSL_sparcv9cap_P[2] = { SPARCV9_TICK_PRIVILEGED, 0 };
/*
* TODO(3.0): Temporarily disabled some assembler that hasn't been brought into
* the FIPS module yet.
*/
#ifndef FIPS_MODE
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);
}
#endif /* FIPS_MODE */
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 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
}
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