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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* This file contains bignum implementation code that
* is specific to x86, but which is still more appropriate
* to write in C, rather than assembly language.
* bignum_i386_asm.s does all the assembly language code
* for x86 specific bignum support. The assembly language
* source file has pure code, no data. Let the C compiler
* generate what is needed to handle the variations in
* data representation and addressing, for example,
* statically linked vs PIC.
*/
#include "bignum.h"
#if defined(_KERNEL)
#include <sys/cpuvar.h>
#include <sys/disp.h>
#endif
extern uint32_t big_mul_set_vec_sse2(uint32_t *, uint32_t *, int, uint32_t);
extern uint32_t big_mul_add_vec_sse2(uint32_t *, uint32_t *, int, uint32_t);
extern void big_mul_vec_sse2(uint32_t *, uint32_t *, int, uint32_t *, int);
extern void big_sqr_vec_sse2(uint32_t *, uint32_t *, int);
#if defined(MMX_MANAGE)
extern uint32_t big_mul_set_vec_sse2_nsv(uint32_t *, uint32_t *, int, uint32_t);
extern uint32_t big_mul_add_vec_sse2_nsv(uint32_t *, uint32_t *, int, uint32_t);
extern void big_mul_vec_sse2_nsv(uint32_t *, uint32_t *, int, uint32_t *, int);
extern void big_sqr_vec_sse2_nsv(uint32_t *, uint32_t *, int);
#endif
extern uint32_t big_mul_set_vec_umul(uint32_t *, uint32_t *, int, uint32_t);
extern uint32_t big_mul_add_vec_umul(uint32_t *, uint32_t *, int, uint32_t);
extern void big_mul_vec_umul(uint32_t *, uint32_t *, int, uint32_t *, int);
extern void big_sqr_vec_umul(uint32_t *, uint32_t *, int);
extern uint32_t bignum_use_sse2();
static void bignum_i386_init();
static uint32_t big_mul_set_vec_init(uint32_t *, uint32_t *, int, uint32_t);
static uint32_t big_mul_add_vec_init(uint32_t *, uint32_t *, int, uint32_t);
static void big_mul_vec_init(uint32_t *, uint32_t *, int, uint32_t *, int);
static void big_sqr_vec_init(uint32_t *, uint32_t *, int);
uint32_t
(*big_mul_set_vec_impl)(uint32_t *r, uint32_t *a, int len, uint32_t digit)
= &big_mul_set_vec_init;
uint32_t
(*big_mul_add_vec_impl)(uint32_t *r, uint32_t *a, int len, uint32_t digit)
= &big_mul_add_vec_init;
void
(*big_mul_vec_impl)(uint32_t *r, uint32_t *a, int alen, uint32_t *b, int blen)
= &big_mul_vec_init;
void
(*big_sqr_vec_impl)(uint32_t *r, uint32_t *a, int alen)
= &big_sqr_vec_init;
static uint32_t
big_mul_set_vec_init(uint32_t *r, uint32_t *a, int len, uint32_t digit)
{
bignum_i386_init();
return ((*big_mul_set_vec_impl)(r, a, len, digit));
}
static uint32_t
big_mul_add_vec_init(uint32_t *r, uint32_t *a, int len, uint32_t digit)
{
bignum_i386_init();
return ((*big_mul_add_vec_impl)(r, a, len, digit));
}
static void
big_mul_vec_init(uint32_t *r, uint32_t *a, int alen, uint32_t *b, int blen)
{
bignum_i386_init();
(*big_mul_vec_impl)(r, a, alen, b, blen);
}
static void
big_sqr_vec_init(uint32_t *r, uint32_t *a, int alen)
{
bignum_i386_init();
(*big_sqr_vec_impl)(r, a, alen);
}
static void
bignum_i386_init()
{
if (bignum_use_sse2() != 0) {
big_mul_set_vec_impl = &big_mul_set_vec_sse2;
big_mul_add_vec_impl = &big_mul_add_vec_sse2;
big_mul_vec_impl = &big_mul_vec_sse2;
big_sqr_vec_impl = &big_sqr_vec_sse2;
} else {
big_mul_set_vec_impl = &big_mul_set_vec_umul;
big_mul_add_vec_impl = &big_mul_add_vec_umul;
big_mul_vec_impl = &big_mul_vec_umul;
big_sqr_vec_impl = &big_sqr_vec_umul;
}
}
void
big_mul_vec_umul(uint32_t *r, uint32_t *a, int alen, uint32_t *b, int blen)
{
int i;
r[alen] = big_mul_set_vec_umul(r, a, alen, b[0]);
for (i = 1; i < blen; ++i)
r[alen + i] = big_mul_add_vec_umul(r+i, a, alen, b[i]);
}
void
big_sqr_vec_umul(uint32_t *r, uint32_t *a, int alen)
{
int i;
r[alen] = big_mul_set_vec_umul(r, a, alen, a[0]);
for (i = 1; i < alen; ++i)
r[alen + i] = big_mul_add_vec_umul(r+i, a, alen, a[i]);
}
#if defined(_KERNEL)
void
kpr_disable()
{
kpreempt_disable();
}
void
kpr_enable()
{
kpreempt_enable();
}
#endif
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