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1st assembly version of field 5x64 code

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This commit is contained in:
Diederik Huys
2013-06-16 22:46:43 +02:00
parent 6c78924a10
commit dd804adeff
7 changed files with 386 additions and 11 deletions
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7
src/impl/field_5x64.h
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@@ -11,6 +11,7 @@
#include "../field.h"
#include <stdio.h>
#include "field_5x64_asm.h"
/** Implements arithmetic modulo FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFE FFFFFC2F,
* represented as 4 uint64_t's in base 2^64, and one overflow uint64_t.
@@ -264,9 +265,14 @@ void static inline secp256k1_fe_add(secp256k1_fe_t *r, const secp256k1_fe_t *a)
}
void static secp256k1_fe_mul(secp256k1_fe_t *r, const secp256k1_fe_t *ac, const secp256k1_fe_t *bc) {
secp256k1_fe_t a = *ac, b = *bc;
secp256k1_fe_reduce(&a);
secp256k1_fe_reduce(&b);
#ifdef USE_FIELD_5X64_ASM
secp256k1_fe_mul_inner((&a)->n,(&b)->n,r->n);
#else
uint64_t c1,c2,c3;
c3=0;
mul_c2(a.n[0], b.n[0], c1, c2);
@@ -303,6 +309,7 @@ void static secp256k1_fe_mul(secp256k1_fe_t *r, const secp256k1_fe_t *ac, const
c = (unsigned __int128)r7 * COMP_LIMB + r3 + (c >> 64);
r->n[3] = c;
r->n[4] = c >> 64;
#endif
#ifdef VERIFY
r->normalized = 0;

11
src/impl/field_5x64_asm.h Normal file
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@@ -0,0 +1,11 @@
// Copyright (c) 2013 Pieter Wuille
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef _SECP256K1_FIELD_INNER5X52_IMPL_H_
#define _SECP256K1_FIELD_INNER5X52_IMPL_H_
void __attribute__ ((sysv_abi)) secp256k1_fe_mul_inner(const uint64_t *a, const uint64_t *b, uint64_t *r);
void __attribute__ ((sysv_abi)) secp256k1_fe_sqr_inner(const uint64_t *a, uint64_t *r);
#endif