grub-savannah-mirror/grub-core/lib/libgcrypt/cipher/sm3-avx-bmi2-amd64.S

/* sm3-avx-bmi2-amd64.S - Intel AVX/BMI2 accelerated SM3 transform function
 * Copyright (C) 2021 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
 * License along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifdef __x86_64__
#include <config.h>

#if (defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
     defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS)) && \
    defined(HAVE_GCC_INLINE_ASM_AVX) && defined(HAVE_GCC_INLINE_ASM_BMI2) && \
    defined(USE_SM3)

#include "asm-common-amd64.h"


/* Context structure */

#define state_h0 0
#define state_h1 4
#define state_h2 8
#define state_h3 12
#define state_h4 16
#define state_h5 20
#define state_h6 24
#define state_h7 28

/* Constants */

SECTION_RODATA
.align 16
ELF(.type _gcry_sm3_avx2_consts,@object)
_gcry_sm3_avx2_consts:
.Lbe32mask:
  .long 0x00010203, 0x04050607, 0x08090a0b, 0x0c0d0e0f
ELF(.size _gcry_sm3_avx2_consts,.-_gcry_sm3_avx2_consts)

/* Round constant macros */

#define K0   2043430169  /* 0x79cc4519 */
#define K1   -208106958  /* 0xf3988a32 */
#define K2   -416213915  /* 0xe7311465 */
#define K3   -832427829  /* 0xce6228cb */
#define K4  -1664855657  /* 0x9cc45197 */
#define K5    965255983  /* 0x3988a32f */
#define K6   1930511966  /* 0x7311465e */
#define K7   -433943364  /* 0xe6228cbc */
#define K8   -867886727  /* 0xcc451979 */
#define K9  -1735773453  /* 0x988a32f3 */
#define K10   823420391  /* 0x311465e7 */
#define K11  1646840782  /* 0x6228cbce */
#define K12 -1001285732  /* 0xc451979c */
#define K13 -2002571463  /* 0x88a32f39 */
#define K14   289824371  /* 0x11465e73 */
#define K15   579648742  /* 0x228cbce6 */
#define K16 -1651869049  /* 0x9d8a7a87 */
#define K17   991229199  /* 0x3b14f50f */
#define K18  1982458398  /* 0x7629ea1e */
#define K19  -330050500  /* 0xec53d43c */
#define K20  -660100999  /* 0xd8a7a879 */
#define K21 -1320201997  /* 0xb14f50f3 */
#define K22  1654563303  /* 0x629ea1e7 */
#define K23  -985840690  /* 0xc53d43ce */
#define K24 -1971681379  /* 0x8a7a879d */
#define K25   351604539  /* 0x14f50f3b */
#define K26   703209078  /* 0x29ea1e76 */
#define K27  1406418156  /* 0x53d43cec */
#define K28 -1482130984  /* 0xa7a879d8 */
#define K29  1330705329  /* 0x4f50f3b1 */
#define K30 -1633556638  /* 0x9ea1e762 */
#define K31  1027854021  /* 0x3d43cec5 */
#define K32  2055708042  /* 0x7a879d8a */
#define K33  -183551212  /* 0xf50f3b14 */
#define K34  -367102423  /* 0xea1e7629 */
#define K35  -734204845  /* 0xd43cec53 */
#define K36 -1468409689  /* 0xa879d8a7 */
#define K37  1358147919  /* 0x50f3b14f */
#define K38 -1578671458  /* 0xa1e7629e */
#define K39  1137624381  /* 0x43cec53d */
#define K40 -2019718534  /* 0x879d8a7a */
#define K41   255530229  /* 0x0f3b14f5 */
#define K42   511060458  /* 0x1e7629ea */
#define K43  1022120916  /* 0x3cec53d4 */
#define K44  2044241832  /* 0x79d8a7a8 */
#define K45  -206483632  /* 0xf3b14f50 */
#define K46  -412967263  /* 0xe7629ea1 */
#define K47  -825934525  /* 0xcec53d43 */
#define K48 -1651869049  /* 0x9d8a7a87 */
#define K49   991229199  /* 0x3b14f50f */
#define K50  1982458398  /* 0x7629ea1e */
#define K51  -330050500  /* 0xec53d43c */
#define K52  -660100999  /* 0xd8a7a879 */
#define K53 -1320201997  /* 0xb14f50f3 */
#define K54  1654563303  /* 0x629ea1e7 */
#define K55  -985840690  /* 0xc53d43ce */
#define K56 -1971681379  /* 0x8a7a879d */
#define K57   351604539  /* 0x14f50f3b */
#define K58   703209078  /* 0x29ea1e76 */
#define K59  1406418156  /* 0x53d43cec */
#define K60 -1482130984  /* 0xa7a879d8 */
#define K61  1330705329  /* 0x4f50f3b1 */
#define K62 -1633556638  /* 0x9ea1e762 */
#define K63  1027854021  /* 0x3d43cec5 */

/* Register macros */

#define RSTATE %rdi
#define RDATA  %rsi
#define RNBLKS %rdx

#define t0 %eax
#define t1 %ebx
#define t2 %ecx

#define a %r8d
#define b %r9d
#define c %r10d
#define d %r11d
#define e %r12d
#define f %r13d
#define g %r14d
#define h %r15d

#define W0 %xmm0
#define W1 %xmm1
#define W2 %xmm2
#define W3 %xmm3
#define W4 %xmm4
#define W5 %xmm5

#define XTMP0 %xmm6
#define XTMP1 %xmm7
#define XTMP2 %xmm8
#define XTMP3 %xmm9
#define XTMP4 %xmm10
#define XTMP5 %xmm11
#define XTMP6 %xmm12

#define BSWAP_REG %xmm15

/* Stack structure */

#define STACK_W_SIZE        (32 * 2 * 3)
#define STACK_REG_SAVE_SIZE (64)

#define STACK_W             (0)
#define STACK_REG_SAVE      (STACK_W + STACK_W_SIZE)
#define STACK_SIZE          (STACK_REG_SAVE + STACK_REG_SAVE_SIZE)

/* Instruction helpers. */

#define roll2(v, reg) \
        roll $(v), reg;

#define roll3mov(v, src, dst) \
        movl src, dst; \
        roll $(v), dst;

#define roll3(v, src, dst) \
        rorxl $(32-(v)), src, dst;

#define addl2(a, out) \
        leal (a, out), out;

/* Round function macros. */

#define GG1(x, y, z, o, t) \
        movl x, o; \
        xorl y, o; \
        xorl z, o;

#define FF1(x, y, z, o, t) GG1(x, y, z, o, t)

#define GG2(x, y, z, o, t) \
        andnl z, x, o; \
        movl y, t; \
        andl x, t; \
        addl2(t, o);

#define FF2(x, y, z, o, t) \
        movl y, o; \
        xorl x, o; \
        movl y, t; \
        andl x, t; \
        andl z, o; \
        xorl t, o;

#define R(i, a, b, c, d, e, f, g, h, round, widx, wtype) \
        /* rol(a, 12) => t0 */ \
          roll3mov(12, a, t0); /* rorxl here would reduce perf by 6% on zen3 */ \
        /* rol (t0 + e + t), 7) => t1 */ \
          leal K##round(t0, e, 1), t1; \
          roll2(7, t1); \
        /* h + w1 => h */ \
          addl wtype##_W1_ADDR(round, widx), h; \
        /* h + t1 => h */ \
          addl2(t1, h); \
        /* t1 ^ t0 => t0 */ \
          xorl t1, t0; \
        /* w1w2 + d => d */ \
          addl wtype##_W1W2_ADDR(round, widx), d; \
        /* FF##i(a,b,c) => t1 */ \
          FF##i(a, b, c, t1, t2); \
        /* d + t1 => d */ \
          addl2(t1, d); \
        /* GG#i(e,f,g) => t2 */ \
          GG##i(e, f, g, t2, t1); \
        /* h + t2 => h */ \
          addl2(t2, h); \
        /* rol (f, 19) => f */ \
          roll2(19, f); \
        /* d + t0 => d */ \
          addl2(t0, d); \
        /* rol (b, 9) => b */ \
          roll2(9, b); \
        /* P0(h) => h */ \
          roll3(9, h, t2); \
          roll3(17, h, t1); \
          xorl t2, h; \
          xorl t1, h;

#define R1(a, b, c, d, e, f, g, h, round, widx, wtype) \
        R(1, a, b, c, d, e, f, g, h, round, widx, wtype)

#define R2(a, b, c, d, e, f, g, h, round, widx, wtype) \
        R(2, a, b, c, d, e, f, g, h, round, widx, wtype)

/* Input expansion macros. */

/* Byte-swapped input address. */
#define IW_W_ADDR(round, widx, offs) \
        (STACK_W + ((round) / 4) * 64 + (offs) + ((widx) * 4))(%rsp)

/* Expanded input address. */
#define XW_W_ADDR(round, widx, offs) \
        (STACK_W + ((((round) / 3) - 4) % 2) * 64 + (offs) + ((widx) * 4))(%rsp)

/* Rounds 1-12, byte-swapped input block addresses. */
#define IW_W1_ADDR(round, widx)   IW_W_ADDR(round, widx, 0)
#define IW_W1W2_ADDR(round, widx) IW_W_ADDR(round, widx, 32)

/* Rounds 1-12, expanded input block addresses. */
#define XW_W1_ADDR(round, widx)   XW_W_ADDR(round, widx, 0)
#define XW_W1W2_ADDR(round, widx) XW_W_ADDR(round, widx, 32)

/* Input block loading. */
#define LOAD_W_XMM_1() \
        vmovdqu 0*16(RDATA), XTMP0; /* XTMP0: w3, w2, w1, w0 */ \
        vmovdqu 1*16(RDATA), XTMP1; /* XTMP1: w7, w6, w5, w4 */ \
        vmovdqu 2*16(RDATA), XTMP2; /* XTMP2: w11, w10, w9, w8 */ \
        vmovdqu 3*16(RDATA), XTMP3; /* XTMP3: w15, w14, w13, w12 */\
        vpshufb BSWAP_REG, XTMP0, XTMP0; \
        vpshufb BSWAP_REG, XTMP1, XTMP1; \
        vpshufb BSWAP_REG, XTMP2, XTMP2; \
        vpshufb BSWAP_REG, XTMP3, XTMP3; \
        vpxor XTMP0, XTMP1, XTMP4; \
        vpxor XTMP1, XTMP2, XTMP5; \
        vpxor XTMP2, XTMP3, XTMP6; \
        leaq 64(RDATA), RDATA; \
        vmovdqa XTMP0, IW_W1_ADDR(0, 0); \
        vmovdqa XTMP4, IW_W1W2_ADDR(0, 0); \
        vmovdqa XTMP1, IW_W1_ADDR(4, 0); \
        vmovdqa XTMP5, IW_W1W2_ADDR(4, 0);

#define LOAD_W_XMM_2() \
        vmovdqa XTMP2, IW_W1_ADDR(8, 0); \
        vmovdqa XTMP6, IW_W1W2_ADDR(8, 0);

#define LOAD_W_XMM_3() \
        vpshufd $0b00000000, XTMP0, W0; /* W0: xx, w0, xx, xx */ \
        vpshufd $0b11111001, XTMP0, W1; /* W1: xx, w3, w2, w1 */ \
        vmovdqa XTMP1, W2;              /* W2: xx, w6, w5, w4 */ \
        vpalignr $12, XTMP1, XTMP2, W3; /* W3: xx, w9, w8, w7 */ \
        vpalignr $8, XTMP2, XTMP3, W4;  /* W4: xx, w12, w11, w10 */ \
        vpshufd $0b11111001, XTMP3, W5; /* W5: xx, w15, w14, w13 */

/* Message scheduling. Note: 3 words per XMM register. */
#define SCHED_W_0(round, w0, w1, w2, w3, w4, w5) \
        /* Load (w[i - 16]) => XTMP0 */ \
        vpshufd $0b10111111, w0, XTMP0; \
        vpalignr $12, XTMP0, w1, XTMP0; /* XTMP0: xx, w2, w1, w0 */ \
        /* Load (w[i - 13]) => XTMP1 */ \
        vpshufd $0b10111111, w1, XTMP1; \
        vpalignr $12, XTMP1, w2, XTMP1; \
        /* w[i - 9] == w3 */ \
        /* XMM3 ^ XTMP0 => XTMP0 */ \
        vpxor w3, XTMP0, XTMP0;

#define SCHED_W_1(round, w0, w1, w2, w3, w4, w5) \
        /* w[i - 3] == w5 */ \
        /* rol(XMM5, 15) ^ XTMP0 => XTMP0 */ \
        vpslld $15, w5, XTMP2; \
        vpsrld $(32-15), w5, XTMP3; \
        vpxor XTMP2, XTMP3, XTMP3; \
        vpxor XTMP3, XTMP0, XTMP0; \
        /* rol(XTMP1, 7) => XTMP1 */ \
        vpslld $7, XTMP1, XTMP5; \
        vpsrld $(32-7), XTMP1, XTMP1; \
        vpxor XTMP5, XTMP1, XTMP1; \
        /* XMM4 ^ XTMP1 => XTMP1 */ \
        vpxor w4, XTMP1, XTMP1; \
        /* w[i - 6] == XMM4 */ \
        /* P1(XTMP0) ^ XTMP1 => XMM0 */ \
        vpslld $15, XTMP0, XTMP5; \
        vpsrld $(32-15), XTMP0, XTMP6; \
        vpslld $23, XTMP0, XTMP2; \
        vpsrld $(32-23), XTMP0, XTMP3; \
        vpxor XTMP0, XTMP1, XTMP1; \
        vpxor XTMP6, XTMP5, XTMP5; \
        vpxor XTMP3, XTMP2, XTMP2; \
        vpxor XTMP2, XTMP5, XTMP5; \
        vpxor XTMP5, XTMP1, w0;

#define SCHED_W_2(round, w0, w1, w2, w3, w4, w5) \
        /* W1 in XMM12 */ \
        vpshufd $0b10111111, w4, XTMP4; \
        vpalignr $12, XTMP4, w5, XTMP4; \
        vmovdqa XTMP4, XW_W1_ADDR((round), 0); \
        /* W1 ^ W2 => XTMP1 */ \
        vpxor w0, XTMP4, XTMP1; \
        vmovdqa XTMP1, XW_W1W2_ADDR((round), 0);

.text

/*
 * Transform nblks*64 bytes (nblks*16 32-bit words) at DATA.
 *
 * unsigned int
 * _gcry_sm3_transform_amd64_avx_bmi2 (void *ctx, const unsigned char *data,
 *                                     size_t nblks)
 */
.globl _gcry_sm3_transform_amd64_avx_bmi2
ELF(.type _gcry_sm3_transform_amd64_avx_bmi2,@function)
.align 16
_gcry_sm3_transform_amd64_avx_bmi2:
  /* input:
   *	%rdi: ctx, CTX
   *	%rsi: data (64*nblks bytes)
   *	%rdx: nblks
   */
  CFI_STARTPROC();

  vzeroupper;

  pushq %rbp;
  CFI_PUSH(%rbp);
  movq %rsp, %rbp;
  CFI_DEF_CFA_REGISTER(%rbp);

  movq %rdx, RNBLKS;

  subq $STACK_SIZE, %rsp;
  andq $(~63), %rsp;

  movq %rbx, (STACK_REG_SAVE + 0 * 8)(%rsp);
  CFI_REL_OFFSET(%rbx, STACK_REG_SAVE + 0 * 8);
  movq %r15, (STACK_REG_SAVE + 1 * 8)(%rsp);
  CFI_REL_OFFSET(%r15, STACK_REG_SAVE + 1 * 8);
  movq %r14, (STACK_REG_SAVE + 2 * 8)(%rsp);
  CFI_REL_OFFSET(%r14, STACK_REG_SAVE + 2 * 8);
  movq %r13, (STACK_REG_SAVE + 3 * 8)(%rsp);
  CFI_REL_OFFSET(%r13, STACK_REG_SAVE + 3 * 8);
  movq %r12, (STACK_REG_SAVE + 4 * 8)(%rsp);
  CFI_REL_OFFSET(%r12, STACK_REG_SAVE + 4 * 8);

  vmovdqa .Lbe32mask rRIP, BSWAP_REG;

  /* Get the values of the chaining variables. */
  movl state_h0(RSTATE), a;
  movl state_h1(RSTATE), b;
  movl state_h2(RSTATE), c;
  movl state_h3(RSTATE), d;
  movl state_h4(RSTATE), e;
  movl state_h5(RSTATE), f;
  movl state_h6(RSTATE), g;
  movl state_h7(RSTATE), h;

.align 16
.Loop:
  /* Load data part1. */
  LOAD_W_XMM_1();

  leaq -1(RNBLKS), RNBLKS;

  /* Transform 0-3 + Load data part2. */
  R1(a, b, c, d, e, f, g, h, 0, 0, IW); LOAD_W_XMM_2();
  R1(d, a, b, c, h, e, f, g, 1, 1, IW);
  R1(c, d, a, b, g, h, e, f, 2, 2, IW);
  R1(b, c, d, a, f, g, h, e, 3, 3, IW); LOAD_W_XMM_3();

  /* Transform 4-7 + Precalc 12-14. */
  R1(a, b, c, d, e, f, g, h, 4, 0, IW);
  R1(d, a, b, c, h, e, f, g, 5, 1, IW);
  R1(c, d, a, b, g, h, e, f, 6, 2, IW); SCHED_W_0(12, W0, W1, W2, W3, W4, W5);
  R1(b, c, d, a, f, g, h, e, 7, 3, IW); SCHED_W_1(12, W0, W1, W2, W3, W4, W5);

  /* Transform 8-11 + Precalc 12-17. */
  R1(a, b, c, d, e, f, g, h, 8, 0, IW); SCHED_W_2(12, W0, W1, W2, W3, W4, W5);
  R1(d, a, b, c, h, e, f, g, 9, 1, IW); SCHED_W_0(15, W1, W2, W3, W4, W5, W0);
  R1(c, d, a, b, g, h, e, f, 10, 2, IW); SCHED_W_1(15, W1, W2, W3, W4, W5, W0);
  R1(b, c, d, a, f, g, h, e, 11, 3, IW); SCHED_W_2(15, W1, W2, W3, W4, W5, W0);

  /* Transform 12-14 + Precalc 18-20 */
  R1(a, b, c, d, e, f, g, h, 12, 0, XW); SCHED_W_0(18, W2, W3, W4, W5, W0, W1);
  R1(d, a, b, c, h, e, f, g, 13, 1, XW); SCHED_W_1(18, W2, W3, W4, W5, W0, W1);
  R1(c, d, a, b, g, h, e, f, 14, 2, XW); SCHED_W_2(18, W2, W3, W4, W5, W0, W1);

  /* Transform 15-17 + Precalc 21-23 */
  R1(b, c, d, a, f, g, h, e, 15, 0, XW); SCHED_W_0(21, W3, W4, W5, W0, W1, W2);
  R2(a, b, c, d, e, f, g, h, 16, 1, XW); SCHED_W_1(21, W3, W4, W5, W0, W1, W2);
  R2(d, a, b, c, h, e, f, g, 17, 2, XW); SCHED_W_2(21, W3, W4, W5, W0, W1, W2);

  /* Transform 18-20 + Precalc 24-26 */
  R2(c, d, a, b, g, h, e, f, 18, 0, XW); SCHED_W_0(24, W4, W5, W0, W1, W2, W3);
  R2(b, c, d, a, f, g, h, e, 19, 1, XW); SCHED_W_1(24, W4, W5, W0, W1, W2, W3);
  R2(a, b, c, d, e, f, g, h, 20, 2, XW); SCHED_W_2(24, W4, W5, W0, W1, W2, W3);

  /* Transform 21-23 + Precalc 27-29 */
  R2(d, a, b, c, h, e, f, g, 21, 0, XW); SCHED_W_0(27, W5, W0, W1, W2, W3, W4);
  R2(c, d, a, b, g, h, e, f, 22, 1, XW); SCHED_W_1(27, W5, W0, W1, W2, W3, W4);
  R2(b, c, d, a, f, g, h, e, 23, 2, XW); SCHED_W_2(27, W5, W0, W1, W2, W3, W4);

  /* Transform 24-26 + Precalc 30-32 */
  R2(a, b, c, d, e, f, g, h, 24, 0, XW); SCHED_W_0(30, W0, W1, W2, W3, W4, W5);
  R2(d, a, b, c, h, e, f, g, 25, 1, XW); SCHED_W_1(30, W0, W1, W2, W3, W4, W5);
  R2(c, d, a, b, g, h, e, f, 26, 2, XW); SCHED_W_2(30, W0, W1, W2, W3, W4, W5);

  /* Transform 27-29 + Precalc 33-35 */
  R2(b, c, d, a, f, g, h, e, 27, 0, XW); SCHED_W_0(33, W1, W2, W3, W4, W5, W0);
  R2(a, b, c, d, e, f, g, h, 28, 1, XW); SCHED_W_1(33, W1, W2, W3, W4, W5, W0);
  R2(d, a, b, c, h, e, f, g, 29, 2, XW); SCHED_W_2(33, W1, W2, W3, W4, W5, W0);

  /* Transform 30-32 + Precalc 36-38 */
  R2(c, d, a, b, g, h, e, f, 30, 0, XW); SCHED_W_0(36, W2, W3, W4, W5, W0, W1);
  R2(b, c, d, a, f, g, h, e, 31, 1, XW); SCHED_W_1(36, W2, W3, W4, W5, W0, W1);
  R2(a, b, c, d, e, f, g, h, 32, 2, XW); SCHED_W_2(36, W2, W3, W4, W5, W0, W1);

  /* Transform 33-35 + Precalc 39-41 */
  R2(d, a, b, c, h, e, f, g, 33, 0, XW); SCHED_W_0(39, W3, W4, W5, W0, W1, W2);
  R2(c, d, a, b, g, h, e, f, 34, 1, XW); SCHED_W_1(39, W3, W4, W5, W0, W1, W2);
  R2(b, c, d, a, f, g, h, e, 35, 2, XW); SCHED_W_2(39, W3, W4, W5, W0, W1, W2);

  /* Transform 36-38 + Precalc 42-44 */
  R2(a, b, c, d, e, f, g, h, 36, 0, XW); SCHED_W_0(42, W4, W5, W0, W1, W2, W3);
  R2(d, a, b, c, h, e, f, g, 37, 1, XW); SCHED_W_1(42, W4, W5, W0, W1, W2, W3);
  R2(c, d, a, b, g, h, e, f, 38, 2, XW); SCHED_W_2(42, W4, W5, W0, W1, W2, W3);

  /* Transform 39-41 + Precalc 45-47 */
  R2(b, c, d, a, f, g, h, e, 39, 0, XW); SCHED_W_0(45, W5, W0, W1, W2, W3, W4);
  R2(a, b, c, d, e, f, g, h, 40, 1, XW); SCHED_W_1(45, W5, W0, W1, W2, W3, W4);
  R2(d, a, b, c, h, e, f, g, 41, 2, XW); SCHED_W_2(45, W5, W0, W1, W2, W3, W4);

  /* Transform 42-44 + Precalc 48-50 */
  R2(c, d, a, b, g, h, e, f, 42, 0, XW); SCHED_W_0(48, W0, W1, W2, W3, W4, W5);
  R2(b, c, d, a, f, g, h, e, 43, 1, XW); SCHED_W_1(48, W0, W1, W2, W3, W4, W5);
  R2(a, b, c, d, e, f, g, h, 44, 2, XW); SCHED_W_2(48, W0, W1, W2, W3, W4, W5);

  /* Transform 45-47 + Precalc 51-53 */
  R2(d, a, b, c, h, e, f, g, 45, 0, XW); SCHED_W_0(51, W1, W2, W3, W4, W5, W0);
  R2(c, d, a, b, g, h, e, f, 46, 1, XW); SCHED_W_1(51, W1, W2, W3, W4, W5, W0);
  R2(b, c, d, a, f, g, h, e, 47, 2, XW); SCHED_W_2(51, W1, W2, W3, W4, W5, W0);

  /* Transform 48-50 + Precalc 54-56 */
  R2(a, b, c, d, e, f, g, h, 48, 0, XW); SCHED_W_0(54, W2, W3, W4, W5, W0, W1);
  R2(d, a, b, c, h, e, f, g, 49, 1, XW); SCHED_W_1(54, W2, W3, W4, W5, W0, W1);
  R2(c, d, a, b, g, h, e, f, 50, 2, XW); SCHED_W_2(54, W2, W3, W4, W5, W0, W1);

  /* Transform 51-53 + Precalc 57-59 */
  R2(b, c, d, a, f, g, h, e, 51, 0, XW); SCHED_W_0(57, W3, W4, W5, W0, W1, W2);
  R2(a, b, c, d, e, f, g, h, 52, 1, XW); SCHED_W_1(57, W3, W4, W5, W0, W1, W2);
  R2(d, a, b, c, h, e, f, g, 53, 2, XW); SCHED_W_2(57, W3, W4, W5, W0, W1, W2);

  /* Transform 54-56 + Precalc 60-62 */
  R2(c, d, a, b, g, h, e, f, 54, 0, XW); SCHED_W_0(60, W4, W5, W0, W1, W2, W3);
  R2(b, c, d, a, f, g, h, e, 55, 1, XW); SCHED_W_1(60, W4, W5, W0, W1, W2, W3);
  R2(a, b, c, d, e, f, g, h, 56, 2, XW); SCHED_W_2(60, W4, W5, W0, W1, W2, W3);

  /* Transform 57-59 + Precalc 63 */
  R2(d, a, b, c, h, e, f, g, 57, 0, XW); SCHED_W_0(63, W5, W0, W1, W2, W3, W4);
  R2(c, d, a, b, g, h, e, f, 58, 1, XW);
  R2(b, c, d, a, f, g, h, e, 59, 2, XW); SCHED_W_1(63, W5, W0, W1, W2, W3, W4);

  /* Transform 60-62 + Precalc 63 */
  R2(a, b, c, d, e, f, g, h, 60, 0, XW);
  R2(d, a, b, c, h, e, f, g, 61, 1, XW); SCHED_W_2(63, W5, W0, W1, W2, W3, W4);
  R2(c, d, a, b, g, h, e, f, 62, 2, XW);

  /* Transform 63 */
  R2(b, c, d, a, f, g, h, e, 63, 0, XW);

  /* Update the chaining variables. */
  xorl state_h0(RSTATE), a;
  xorl state_h1(RSTATE), b;
  xorl state_h2(RSTATE), c;
  xorl state_h3(RSTATE), d;
  movl a, state_h0(RSTATE);
  movl b, state_h1(RSTATE);
  movl c, state_h2(RSTATE);
  movl d, state_h3(RSTATE);
  xorl state_h4(RSTATE), e;
  xorl state_h5(RSTATE), f;
  xorl state_h6(RSTATE), g;
  xorl state_h7(RSTATE), h;
  movl e, state_h4(RSTATE);
  movl f, state_h5(RSTATE);
  movl g, state_h6(RSTATE);
  movl h, state_h7(RSTATE);

  cmpq $0, RNBLKS;
  jne .Loop;

  vzeroall;

  movq (STACK_REG_SAVE + 0 * 8)(%rsp), %rbx;
  CFI_RESTORE(%rbx);
  movq (STACK_REG_SAVE + 1 * 8)(%rsp), %r15;
  CFI_RESTORE(%r15);
  movq (STACK_REG_SAVE + 2 * 8)(%rsp), %r14;
  CFI_RESTORE(%r14);
  movq (STACK_REG_SAVE + 3 * 8)(%rsp), %r13;
  CFI_RESTORE(%r13);
  movq (STACK_REG_SAVE + 4 * 8)(%rsp), %r12;
  CFI_RESTORE(%r12);

  vmovdqa %xmm0, IW_W1_ADDR(0, 0);
  vmovdqa %xmm0, IW_W1W2_ADDR(0, 0);
  vmovdqa %xmm0, IW_W1_ADDR(4, 0);
  vmovdqa %xmm0, IW_W1W2_ADDR(4, 0);
  vmovdqa %xmm0, IW_W1_ADDR(8, 0);
  vmovdqa %xmm0, IW_W1W2_ADDR(8, 0);
  xorl %eax, %eax; /* stack burned */

  leave;
  CFI_LEAVE();
  ret_spec_stop;
  CFI_ENDPROC();
ELF(.size _gcry_sm3_transform_amd64_avx_bmi2,
          .-_gcry_sm3_transform_amd64_avx_bmi2;)

#endif
#endif