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/* chacha20-ppc.c - PowerPC vector implementation of ChaCha20
* Copyright (C) 2019 Jussi Kivilinna <jussi.kivilinna@iki.fi>
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
*/
#include <config.h>
#if defined(ENABLE_PPC_CRYPTO_SUPPORT) && \
defined(HAVE_COMPATIBLE_CC_PPC_ALTIVEC) && \
defined(HAVE_GCC_INLINE_ASM_PPC_ALTIVEC) && \
defined(USE_CHACHA20) && \
__GNUC__ >= 4
#include <altivec.h>
#include "bufhelp.h"
#include "poly1305-internal.h"
#include "mpi-internal.h"
#include "longlong.h"
typedef vector unsigned char vector16x_u8;
typedef vector unsigned int vector4x_u32;
typedef vector unsigned long long vector2x_u64;
#define ALWAYS_INLINE inline __attribute__((always_inline))
#define NO_INLINE __attribute__((noinline))
#define NO_INSTRUMENT_FUNCTION __attribute__((no_instrument_function))
#define ASM_FUNC_ATTR NO_INSTRUMENT_FUNCTION
#define ASM_FUNC_ATTR_INLINE ASM_FUNC_ATTR ALWAYS_INLINE
#define ASM_FUNC_ATTR_NOINLINE ASM_FUNC_ATTR NO_INLINE
#ifdef WORDS_BIGENDIAN
static const vector16x_u8 le_bswap_const =
{ 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12 };
#endif
static ASM_FUNC_ATTR_INLINE vector4x_u32
vec_rol_elems(vector4x_u32 v, unsigned int idx)
{
#ifndef WORDS_BIGENDIAN
return vec_sld (v, v, (16 - (4 * idx)) & 15);
#else
return vec_sld (v, v, (4 * idx) & 15);
#endif
}
static ASM_FUNC_ATTR_INLINE vector4x_u32
vec_load_le(unsigned long offset, const unsigned char *ptr)
{
vector4x_u32 vec;
vec = vec_vsx_ld (offset, (const u32 *)ptr);
#ifdef WORDS_BIGENDIAN
vec = (vector4x_u32)vec_perm((vector16x_u8)vec, (vector16x_u8)vec,
le_bswap_const);
#endif
return vec;
}
static ASM_FUNC_ATTR_INLINE void
vec_store_le(vector4x_u32 vec, unsigned long offset, unsigned char *ptr)
{
#ifdef WORDS_BIGENDIAN
vec = (vector4x_u32)vec_perm((vector16x_u8)vec, (vector16x_u8)vec,
le_bswap_const);
#endif
vec_vsx_st (vec, offset, (u32 *)ptr);
}
static ASM_FUNC_ATTR_INLINE vector4x_u32
vec_add_ctr_u64(vector4x_u32 v, vector4x_u32 a)
{
#ifdef WORDS_BIGENDIAN
static const vector16x_u8 swap32 =
{ 4, 5, 6, 7, 0, 1, 2, 3, 12, 13, 14, 15, 8, 9, 10, 11 };
vector2x_u64 vec, add, sum;
vec = (vector2x_u64)vec_perm((vector16x_u8)v, (vector16x_u8)v, swap32);
add = (vector2x_u64)vec_perm((vector16x_u8)a, (vector16x_u8)a, swap32);
sum = vec + add;
return (vector4x_u32)vec_perm((vector16x_u8)sum, (vector16x_u8)sum, swap32);
#else
return (vector4x_u32)((vector2x_u64)(v) + (vector2x_u64)(a));
#endif
}
/**********************************************************************
2-way && 1-way chacha20
**********************************************************************/
#define ROTATE(v1,rolv) \
__asm__ ("vrlw %0,%1,%2\n\t" : "=v" (v1) : "v" (v1), "v" (rolv))
#define WORD_ROL(v1,c) \
((v1) = vec_rol_elems((v1), (c)))
#define XOR(ds,s) \
((ds) ^= (s))
#define PLUS(ds,s) \
((ds) += (s))
#define QUARTERROUND4(x0,x1,x2,x3,rol_x1,rol_x2,rol_x3) \
PLUS(x0, x1); XOR(x3, x0); ROTATE(x3, rotate_16); \
PLUS(x2, x3); XOR(x1, x2); ROTATE(x1, rotate_12); \
PLUS(x0, x1); XOR(x3, x0); ROTATE(x3, rotate_8); \
PLUS(x2, x3); \
WORD_ROL(x3, rol_x3); \
XOR(x1, x2); \
WORD_ROL(x2, rol_x2); \
ROTATE(x1, rotate_7); \
WORD_ROL(x1, rol_x1);
#define ADD_U64(v,a) \
(v = vec_add_ctr_u64(v, a))
unsigned int ASM_FUNC_ATTR
_gcry_chacha20_ppc8_blocks1(u32 *state, byte *dst, const byte *src,
size_t nblks)
{
vector4x_u32 counter_1 = { 1, 0, 0, 0 };
vector4x_u32 rotate_16 = { 16, 16, 16, 16 };
vector4x_u32 rotate_12 = { 12, 12, 12, 12 };
vector4x_u32 rotate_8 = { 8, 8, 8, 8 };
vector4x_u32 rotate_7 = { 7, 7, 7, 7 };
vector4x_u32 state0, state1, state2, state3;
vector4x_u32 v0, v1, v2, v3;
vector4x_u32 v4, v5, v6, v7;
int i;
/* force preload of constants to vector registers */
__asm__ ("": "+v" (counter_1) :: "memory");
__asm__ ("": "+v" (rotate_16) :: "memory");
__asm__ ("": "+v" (rotate_12) :: "memory");
__asm__ ("": "+v" (rotate_8) :: "memory");
__asm__ ("": "+v" (rotate_7) :: "memory");
state0 = vec_vsx_ld(0 * 16, state);
state1 = vec_vsx_ld(1 * 16, state);
state2 = vec_vsx_ld(2 * 16, state);
state3 = vec_vsx_ld(3 * 16, state);
while (nblks >= 2)
{
v0 = state0;
v1 = state1;
v2 = state2;
v3 = state3;
v4 = state0;
v5 = state1;
v6 = state2;
v7 = state3;
ADD_U64(v7, counter_1);
for (i = 20; i > 0; i -= 2)
{
QUARTERROUND4(v0, v1, v2, v3, 1, 2, 3);
QUARTERROUND4(v4, v5, v6, v7, 1, 2, 3);
QUARTERROUND4(v0, v1, v2, v3, 3, 2, 1);
QUARTERROUND4(v4, v5, v6, v7, 3, 2, 1);
}
v0 += state0;
v1 += state1;
v2 += state2;
v3 += state3;
ADD_U64(state3, counter_1); /* update counter */
v4 += state0;
v5 += state1;
v6 += state2;
v7 += state3;
ADD_U64(state3, counter_1); /* update counter */
v0 ^= vec_load_le(0 * 16, src);
v1 ^= vec_load_le(1 * 16, src);
v2 ^= vec_load_le(2 * 16, src);
v3 ^= vec_load_le(3 * 16, src);
vec_store_le(v0, 0 * 16, dst);
vec_store_le(v1, 1 * 16, dst);
vec_store_le(v2, 2 * 16, dst);
vec_store_le(v3, 3 * 16, dst);
src += 64;
dst += 64;
v4 ^= vec_load_le(0 * 16, src);
v5 ^= vec_load_le(1 * 16, src);
v6 ^= vec_load_le(2 * 16, src);
v7 ^= vec_load_le(3 * 16, src);
vec_store_le(v4, 0 * 16, dst);
vec_store_le(v5, 1 * 16, dst);
vec_store_le(v6, 2 * 16, dst);
vec_store_le(v7, 3 * 16, dst);
src += 64;
dst += 64;
nblks -= 2;
}
while (nblks)
{
v0 = state0;
v1 = state1;
v2 = state2;
v3 = state3;
for (i = 20; i > 0; i -= 2)
{
QUARTERROUND4(v0, v1, v2, v3, 1, 2, 3);
QUARTERROUND4(v0, v1, v2, v3, 3, 2, 1);
}
v0 += state0;
v1 += state1;
v2 += state2;
v3 += state3;
ADD_U64(state3, counter_1); /* update counter */
v0 ^= vec_load_le(0 * 16, src);
v1 ^= vec_load_le(1 * 16, src);
v2 ^= vec_load_le(2 * 16, src);
v3 ^= vec_load_le(3 * 16, src);
vec_store_le(v0, 0 * 16, dst);
vec_store_le(v1, 1 * 16, dst);
vec_store_le(v2, 2 * 16, dst);
vec_store_le(v3, 3 * 16, dst);
src += 64;
dst += 64;
nblks--;
}
vec_vsx_st(state3, 3 * 16, state); /* store counter */
return 0;
}
/**********************************************************************
4-way chacha20
**********************************************************************/
/* 4x4 32-bit integer matrix transpose */
#define transpose_4x4(x0, x1, x2, x3) ({ \
vector4x_u32 t1 = vec_mergeh(x0, x2); \
vector4x_u32 t2 = vec_mergel(x0, x2); \
vector4x_u32 t3 = vec_mergeh(x1, x3); \
x3 = vec_mergel(x1, x3); \
x0 = vec_mergeh(t1, t3); \
x1 = vec_mergel(t1, t3); \
x2 = vec_mergeh(t2, x3); \
x3 = vec_mergel(t2, x3); \
})
#define QUARTERROUND2(a1,b1,c1,d1,a2,b2,c2,d2) \
PLUS(a1,b1); PLUS(a2,b2); XOR(d1,a1); XOR(d2,a2); \
ROTATE(d1, rotate_16); ROTATE(d2, rotate_16); \
PLUS(c1,d1); PLUS(c2,d2); XOR(b1,c1); XOR(b2,c2); \
ROTATE(b1, rotate_12); ROTATE(b2, rotate_12); \
PLUS(a1,b1); PLUS(a2,b2); XOR(d1,a1); XOR(d2,a2); \
ROTATE(d1, rotate_8); ROTATE(d2, rotate_8); \
PLUS(c1,d1); PLUS(c2,d2); XOR(b1,c1); XOR(b2,c2); \
ROTATE(b1, rotate_7); ROTATE(b2, rotate_7);
unsigned int ASM_FUNC_ATTR
_gcry_chacha20_ppc8_blocks4(u32 *state, byte *dst, const byte *src,
size_t nblks)
{
vector4x_u32 counters_0123 = { 0, 1, 2, 3 };
vector4x_u32 counter_4 = { 4, 0, 0, 0 };
vector4x_u32 rotate_16 = { 16, 16, 16, 16 };
vector4x_u32 rotate_12 = { 12, 12, 12, 12 };
vector4x_u32 rotate_8 = { 8, 8, 8, 8 };
vector4x_u32 rotate_7 = { 7, 7, 7, 7 };
vector4x_u32 state0, state1, state2, state3;
vector4x_u32 v0, v1, v2, v3, v4, v5, v6, v7;
vector4x_u32 v8, v9, v10, v11, v12, v13, v14, v15;
vector4x_u32 tmp;
int i;
/* force preload of constants to vector registers */
__asm__ ("": "+v" (counters_0123) :: "memory");
__asm__ ("": "+v" (counter_4) :: "memory");
__asm__ ("": "+v" (rotate_16) :: "memory");
__asm__ ("": "+v" (rotate_12) :: "memory");
__asm__ ("": "+v" (rotate_8) :: "memory");
__asm__ ("": "+v" (rotate_7) :: "memory");
state0 = vec_vsx_ld(0 * 16, state);
state1 = vec_vsx_ld(1 * 16, state);
state2 = vec_vsx_ld(2 * 16, state);
state3 = vec_vsx_ld(3 * 16, state);
do
{
v0 = vec_splat(state0, 0);
v1 = vec_splat(state0, 1);
v2 = vec_splat(state0, 2);
v3 = vec_splat(state0, 3);
v4 = vec_splat(state1, 0);
v5 = vec_splat(state1, 1);
v6 = vec_splat(state1, 2);
v7 = vec_splat(state1, 3);
v8 = vec_splat(state2, 0);
v9 = vec_splat(state2, 1);
v10 = vec_splat(state2, 2);
v11 = vec_splat(state2, 3);
v12 = vec_splat(state3, 0);
v13 = vec_splat(state3, 1);
v14 = vec_splat(state3, 2);
v15 = vec_splat(state3, 3);
v12 += counters_0123;
v13 -= vec_cmplt(v12, counters_0123);
for (i = 20; i > 0; i -= 2)
{
QUARTERROUND2(v0, v4, v8, v12, v1, v5, v9, v13)
QUARTERROUND2(v2, v6, v10, v14, v3, v7, v11, v15)
QUARTERROUND2(v0, v5, v10, v15, v1, v6, v11, v12)
QUARTERROUND2(v2, v7, v8, v13, v3, v4, v9, v14)
}
v0 += vec_splat(state0, 0);
v1 += vec_splat(state0, 1);
v2 += vec_splat(state0, 2);
v3 += vec_splat(state0, 3);
v4 += vec_splat(state1, 0);
v5 += vec_splat(state1, 1);
v6 += vec_splat(state1, 2);
v7 += vec_splat(state1, 3);
v8 += vec_splat(state2, 0);
v9 += vec_splat(state2, 1);
v10 += vec_splat(state2, 2);
v11 += vec_splat(state2, 3);
tmp = vec_splat(state3, 0);
tmp += counters_0123;
v12 += tmp;
v13 += vec_splat(state3, 1) - vec_cmplt(tmp, counters_0123);
v14 += vec_splat(state3, 2);
v15 += vec_splat(state3, 3);
ADD_U64(state3, counter_4); /* update counter */
transpose_4x4(v0, v1, v2, v3);
transpose_4x4(v4, v5, v6, v7);
transpose_4x4(v8, v9, v10, v11);
transpose_4x4(v12, v13, v14, v15);
v0 ^= vec_load_le((64 * 0 + 16 * 0), src);
v1 ^= vec_load_le((64 * 1 + 16 * 0), src);
v2 ^= vec_load_le((64 * 2 + 16 * 0), src);
v3 ^= vec_load_le((64 * 3 + 16 * 0), src);
v4 ^= vec_load_le((64 * 0 + 16 * 1), src);
v5 ^= vec_load_le((64 * 1 + 16 * 1), src);
v6 ^= vec_load_le((64 * 2 + 16 * 1), src);
v7 ^= vec_load_le((64 * 3 + 16 * 1), src);
v8 ^= vec_load_le((64 * 0 + 16 * 2), src);
v9 ^= vec_load_le((64 * 1 + 16 * 2), src);
v10 ^= vec_load_le((64 * 2 + 16 * 2), src);
v11 ^= vec_load_le((64 * 3 + 16 * 2), src);
v12 ^= vec_load_le((64 * 0 + 16 * 3), src);
v13 ^= vec_load_le((64 * 1 + 16 * 3), src);
v14 ^= vec_load_le((64 * 2 + 16 * 3), src);
v15 ^= vec_load_le((64 * 3 + 16 * 3), src);
vec_store_le(v0, (64 * 0 + 16 * 0), dst);
vec_store_le(v1, (64 * 1 + 16 * 0), dst);
vec_store_le(v2, (64 * 2 + 16 * 0), dst);
vec_store_le(v3, (64 * 3 + 16 * 0), dst);
vec_store_le(v4, (64 * 0 + 16 * 1), dst);
vec_store_le(v5, (64 * 1 + 16 * 1), dst);
vec_store_le(v6, (64 * 2 + 16 * 1), dst);
vec_store_le(v7, (64 * 3 + 16 * 1), dst);
vec_store_le(v8, (64 * 0 + 16 * 2), dst);
vec_store_le(v9, (64 * 1 + 16 * 2), dst);
vec_store_le(v10, (64 * 2 + 16 * 2), dst);
vec_store_le(v11, (64 * 3 + 16 * 2), dst);
vec_store_le(v12, (64 * 0 + 16 * 3), dst);
vec_store_le(v13, (64 * 1 + 16 * 3), dst);
vec_store_le(v14, (64 * 2 + 16 * 3), dst);
vec_store_le(v15, (64 * 3 + 16 * 3), dst);
src += 4*64;
dst += 4*64;
nblks -= 4;
}
while (nblks);
vec_vsx_st(state3, 3 * 16, state); /* store counter */
return 0;
}
#if SIZEOF_UNSIGNED_LONG == 8
/**********************************************************************
4-way stitched chacha20-poly1305
**********************************************************************/
#define ADD_1305_64(A2, A1, A0, B2, B1, B0) \
__asm__ ("addc %0, %3, %0\n" \
"adde %1, %4, %1\n" \
"adde %2, %5, %2\n" \
: "+r" (A0), "+r" (A1), "+r" (A2) \
: "r" (B0), "r" (B1), "r" (B2) \
: "cc" )
#define MUL_MOD_1305_64_PART1(H2, H1, H0, R1, R0, R1_MULT5) do { \
/* x = a * r (partial mod 2^130-5) */ \
umul_ppmm(x0_hi, x0_lo, H0, R0); /* h0 * r0 */ \
umul_ppmm(x1_hi, x1_lo, H0, R1); /* h0 * r1 */ \
\
umul_ppmm(t0_hi, t0_lo, H1, R1_MULT5); /* h1 * r1 mod 2^130-5 */ \
} while (0)
#define MUL_MOD_1305_64_PART2(H2, H1, H0, R1, R0, R1_MULT5) do { \
add_ssaaaa(x0_hi, x0_lo, x0_hi, x0_lo, t0_hi, t0_lo); \
umul_ppmm(t1_hi, t1_lo, H1, R0); /* h1 * r0 */ \
add_ssaaaa(x1_hi, x1_lo, x1_hi, x1_lo, t1_hi, t1_lo); \
\
t1_lo = H2 * R1_MULT5; /* h2 * r1 mod 2^130-5 */ \
t1_hi = H2 * R0; /* h2 * r0 */ \
add_ssaaaa(H0, H1, x1_hi, x1_lo, t1_hi, t1_lo); \
\
/* carry propagation */ \
H2 = H0 & 3; \
H0 = (H0 >> 2) * 5; /* msb mod 2^130-5 */ \
ADD_1305_64(H2, H1, H0, (u64)0, x0_hi, x0_lo); \
} while (0)
#define POLY1305_BLOCK_PART1(in_pos) do { \
m0 = buf_get_le64(poly1305_src + (in_pos) + 0); \
m1 = buf_get_le64(poly1305_src + (in_pos) + 8); \
/* a = h + m */ \
ADD_1305_64(h2, h1, h0, m2, m1, m0); \
/* h = a * r (partial mod 2^130-5) */ \
MUL_MOD_1305_64_PART1(h2, h1, h0, r1, r0, r1_mult5); \
} while (0)
#define POLY1305_BLOCK_PART2(in_pos) do { \
MUL_MOD_1305_64_PART2(h2, h1, h0, r1, r0, r1_mult5); \
} while (0)
unsigned int ASM_FUNC_ATTR
_gcry_chacha20_poly1305_ppc8_blocks4(u32 *state, byte *dst, const byte *src,
size_t nblks, POLY1305_STATE *st,
const byte *poly1305_src)
{
vector4x_u32 counters_0123 = { 0, 1, 2, 3 };
vector4x_u32 counter_4 = { 4, 0, 0, 0 };
vector4x_u32 rotate_16 = { 16, 16, 16, 16 };
vector4x_u32 rotate_12 = { 12, 12, 12, 12 };
vector4x_u32 rotate_8 = { 8, 8, 8, 8 };
vector4x_u32 rotate_7 = { 7, 7, 7, 7 };
vector4x_u32 state0, state1, state2, state3;
vector4x_u32 v0, v1, v2, v3, v4, v5, v6, v7;
vector4x_u32 v8, v9, v10, v11, v12, v13, v14, v15;
vector4x_u32 tmp;
u64 r0, r1, r1_mult5;
u64 h0, h1, h2;
u64 m0, m1, m2;
u64 x0_lo, x0_hi, x1_lo, x1_hi;
u64 t0_lo, t0_hi, t1_lo, t1_hi;
unsigned int i, o;
/* load poly1305 state */
m2 = 1;
h0 = st->h[0] + ((u64)st->h[1] << 32);
h1 = st->h[2] + ((u64)st->h[3] << 32);
h2 = st->h[4];
r0 = st->r[0] + ((u64)st->r[1] << 32);
r1 = st->r[2] + ((u64)st->r[3] << 32);
r1_mult5 = (r1 >> 2) + r1;
/* force preload of constants to vector registers */
__asm__ ("": "+v" (counters_0123) :: "memory");
__asm__ ("": "+v" (counter_4) :: "memory");
__asm__ ("": "+v" (rotate_16) :: "memory");
__asm__ ("": "+v" (rotate_12) :: "memory");
__asm__ ("": "+v" (rotate_8) :: "memory");
__asm__ ("": "+v" (rotate_7) :: "memory");
state0 = vec_vsx_ld(0 * 16, state);
state1 = vec_vsx_ld(1 * 16, state);
state2 = vec_vsx_ld(2 * 16, state);
state3 = vec_vsx_ld(3 * 16, state);
do
{
v0 = vec_splat(state0, 0);
v1 = vec_splat(state0, 1);
v2 = vec_splat(state0, 2);
v3 = vec_splat(state0, 3);
v4 = vec_splat(state1, 0);
v5 = vec_splat(state1, 1);
v6 = vec_splat(state1, 2);
v7 = vec_splat(state1, 3);
v8 = vec_splat(state2, 0);
v9 = vec_splat(state2, 1);
v10 = vec_splat(state2, 2);
v11 = vec_splat(state2, 3);
v12 = vec_splat(state3, 0);
v13 = vec_splat(state3, 1);
v14 = vec_splat(state3, 2);
v15 = vec_splat(state3, 3);
v12 += counters_0123;
v13 -= vec_cmplt(v12, counters_0123);
for (o = 20; o; o -= 10)
{
for (i = 8; i; i -= 2)
{
POLY1305_BLOCK_PART1(0 * 16);
QUARTERROUND2(v0, v4, v8, v12, v1, v5, v9, v13)
POLY1305_BLOCK_PART2();
QUARTERROUND2(v2, v6, v10, v14, v3, v7, v11, v15)
POLY1305_BLOCK_PART1(1 * 16);
poly1305_src += 2 * 16;
QUARTERROUND2(v0, v5, v10, v15, v1, v6, v11, v12)
POLY1305_BLOCK_PART2();
QUARTERROUND2(v2, v7, v8, v13, v3, v4, v9, v14)
}
QUARTERROUND2(v0, v4, v8, v12, v1, v5, v9, v13)
QUARTERROUND2(v2, v6, v10, v14, v3, v7, v11, v15)
QUARTERROUND2(v0, v5, v10, v15, v1, v6, v11, v12)
QUARTERROUND2(v2, v7, v8, v13, v3, v4, v9, v14)
}
v0 += vec_splat(state0, 0);
v1 += vec_splat(state0, 1);
v2 += vec_splat(state0, 2);
v3 += vec_splat(state0, 3);
v4 += vec_splat(state1, 0);
v5 += vec_splat(state1, 1);
v6 += vec_splat(state1, 2);
v7 += vec_splat(state1, 3);
v8 += vec_splat(state2, 0);
v9 += vec_splat(state2, 1);
v10 += vec_splat(state2, 2);
v11 += vec_splat(state2, 3);
tmp = vec_splat(state3, 0);
tmp += counters_0123;
v12 += tmp;
v13 += vec_splat(state3, 1) - vec_cmplt(tmp, counters_0123);
v14 += vec_splat(state3, 2);
v15 += vec_splat(state3, 3);
ADD_U64(state3, counter_4); /* update counter */
transpose_4x4(v0, v1, v2, v3);
transpose_4x4(v4, v5, v6, v7);
transpose_4x4(v8, v9, v10, v11);
transpose_4x4(v12, v13, v14, v15);
v0 ^= vec_load_le((64 * 0 + 16 * 0), src);
v1 ^= vec_load_le((64 * 1 + 16 * 0), src);
v2 ^= vec_load_le((64 * 2 + 16 * 0), src);
v3 ^= vec_load_le((64 * 3 + 16 * 0), src);
v4 ^= vec_load_le((64 * 0 + 16 * 1), src);
v5 ^= vec_load_le((64 * 1 + 16 * 1), src);
v6 ^= vec_load_le((64 * 2 + 16 * 1), src);
v7 ^= vec_load_le((64 * 3 + 16 * 1), src);
v8 ^= vec_load_le((64 * 0 + 16 * 2), src);
v9 ^= vec_load_le((64 * 1 + 16 * 2), src);
v10 ^= vec_load_le((64 * 2 + 16 * 2), src);
v11 ^= vec_load_le((64 * 3 + 16 * 2), src);
v12 ^= vec_load_le((64 * 0 + 16 * 3), src);
v13 ^= vec_load_le((64 * 1 + 16 * 3), src);
v14 ^= vec_load_le((64 * 2 + 16 * 3), src);
v15 ^= vec_load_le((64 * 3 + 16 * 3), src);
vec_store_le(v0, (64 * 0 + 16 * 0), dst);
vec_store_le(v1, (64 * 1 + 16 * 0), dst);
vec_store_le(v2, (64 * 2 + 16 * 0), dst);
vec_store_le(v3, (64 * 3 + 16 * 0), dst);
vec_store_le(v4, (64 * 0 + 16 * 1), dst);
vec_store_le(v5, (64 * 1 + 16 * 1), dst);
vec_store_le(v6, (64 * 2 + 16 * 1), dst);
vec_store_le(v7, (64 * 3 + 16 * 1), dst);
vec_store_le(v8, (64 * 0 + 16 * 2), dst);
vec_store_le(v9, (64 * 1 + 16 * 2), dst);
vec_store_le(v10, (64 * 2 + 16 * 2), dst);
vec_store_le(v11, (64 * 3 + 16 * 2), dst);
vec_store_le(v12, (64 * 0 + 16 * 3), dst);
vec_store_le(v13, (64 * 1 + 16 * 3), dst);
vec_store_le(v14, (64 * 2 + 16 * 3), dst);
vec_store_le(v15, (64 * 3 + 16 * 3), dst);
src += 4*64;
dst += 4*64;
nblks -= 4;
}
while (nblks);
vec_vsx_st(state3, 3 * 16, state); /* store counter */
/* store poly1305 state */
st->h[0] = h0;
st->h[1] = h0 >> 32;
st->h[2] = h1;
st->h[3] = h1 >> 32;
st->h[4] = h2;
return 0;
}
#endif /* SIZEOF_UNSIGNED_LONG == 8 */
#endif /* ENABLE_PPC_CRYPTO_SUPPORT */