[PATCH] Add Whirlpool AMD64/SSE2 assembly implementation

Jussi Kivilinna jussi.kivilinna at iki.fi
Sat Oct 4 14:25:18 CEST 2014


* cipher/Makefile.am: Add 'whirlpool-sse2-amd64.S'.
* cipher/whirlpool-sse2-amd64.S: New.
* cipher/whirlpool.c (USE_AMD64_ASM): New.
(whirlpool_tables_s): New.
(rc, C0, C1, C2, C3, C4, C5, C6, C7): Combine these tables into single
structure and replace old tables with macros of same name.
(tab): New structure containing above tables.
[USE_AMD64_ASM] (_gcry_whirlpool_transform_amd64)
(whirlpool_transform): New.
* configure.ac [host=x86_64]: Add 'whirlpool-sse2-amd64.lo'.

---

Benchmark results:

On Intel Core i5-4570 (3.2 Ghz):
After:
 WHIRLPOOL      |      4.82 ns/B     197.8 MiB/s     15.43 c/B
Before:
 WHIRLPOOL      |      9.10 ns/B     104.8 MiB/s     29.13 c/B

On Intel Core i5-2450M (2.5 Ghz):
After:
 WHIRLPOOL      |      8.43 ns/B     113.1 MiB/s     21.09 c/B
Before:
 WHIRLPOOL      |     13.45 ns/B     70.92 MiB/s     33.62 c/B

On Intel Core2 T8100 (2.1 Ghz):
After:
 WHIRLPOOL      |     10.22 ns/B     93.30 MiB/s     21.47 c/B
Before:
 WHIRLPOOL      |     19.87 ns/B     48.00 MiB/s     41.72 c/B

Summary, old vs new ratio:

 Intel Core i5-4570: 1.88x
 Intel Core i5-2450M: 1.59x
 Intel Core2 T8100: 1.94x

Signed-off-by: Jussi Kivilinna <jussi.kivilinna at iki.fi>
---
 cipher/Makefile.am            |    2 
 cipher/whirlpool-sse2-amd64.S |  335 +++++++++++++++++++++++++++++++++++++++++
 cipher/whirlpool.c            |   91 +++++++----
 configure.ac                  |    7 +
 4 files changed, 398 insertions(+), 37 deletions(-)
 create mode 100644 cipher/whirlpool-sse2-amd64.S

diff --git a/cipher/Makefile.am b/cipher/Makefile.am
index c165356..7f45cbb 100644
--- a/cipher/Makefile.am
+++ b/cipher/Makefile.am
@@ -87,7 +87,7 @@ sha512.c sha512-ssse3-amd64.S sha512-avx-amd64.S sha512-avx2-bmi2-amd64.S \
   sha512-armv7-neon.S \
 stribog.c \
 tiger.c \
-whirlpool.c \
+whirlpool.c whirlpool-sse2-amd64.S \
 twofish.c twofish-amd64.S twofish-arm.S \
 rfc2268.c \
 camellia.c camellia.h camellia-glue.c camellia-aesni-avx-amd64.S \
diff --git a/cipher/whirlpool-sse2-amd64.S b/cipher/whirlpool-sse2-amd64.S
new file mode 100644
index 0000000..d0bcf2d
--- /dev/null
+++ b/cipher/whirlpool-sse2-amd64.S
@@ -0,0 +1,335 @@
+/* whirlpool-sse2-amd64.S  -  AMD64 assembly implementation of Whirlpool
+ *
+ * Copyright (C) 2014 Jussi Kivilinna <jussi.kivilinna at 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(USE_WHIRLPOOL)
+
+#ifdef __PIC__
+#  define RIP %rip
+#else
+#  define RIP
+#endif
+
+.text
+
+/* look-up table offsets on RTAB */
+#define RC (0)
+#define C0 (RC + (8 * 10))
+#define C1 (C0 + (8 * 256))
+#define C2 (C1 + (8 * 256))
+#define C3 (C2 + (8 * 256))
+#define C4 (C3 + (8 * 256))
+#define C5 (C4 + (8 * 256))
+#define C6 (C5 + (8 * 256))
+#define C7 (C6 + (8 * 256))
+
+/* stack variables */
+#define STACK_DATAP  (0)
+#define STACK_STATEP (STACK_DATAP + 8)
+#define STACK_ROUNDS (STACK_STATEP + 8)
+#define STACK_NBLKS  (STACK_ROUNDS + 8)
+#define STACK_RBP    (STACK_NBLKS + 8)
+#define STACK_RBX    (STACK_RBP + 8)
+#define STACK_R12    (STACK_RBX + 8)
+#define STACK_R13    (STACK_R12 + 8)
+#define STACK_R14    (STACK_R13 + 8)
+#define STACK_R15    (STACK_R14 + 8)
+#define STACK_MAX    (STACK_R15 + 8)
+
+/* register macros */
+#define RTAB	%rbp
+
+#define RI1	%rax
+#define RI2	%rbx
+#define RI3	%rcx
+#define RI4	%rdx
+
+#define RI1d	%eax
+#define RI2d	%ebx
+#define RI3d	%ecx
+#define RI4d	%edx
+
+#define RI1bl	%al
+#define RI2bl	%bl
+#define RI3bl	%cl
+#define RI4bl	%dl
+
+#define RI1bh	%ah
+#define RI2bh	%bh
+#define RI3bh	%ch
+#define RI4bh	%dh
+
+#define RB0	%r8
+#define RB1	%r9
+#define RB2	%r10
+#define RB3	%r11
+#define RB4	%r12
+#define RB5	%r13
+#define RB6	%r14
+#define RB7	%r15
+
+#define RT0	%rsi
+#define RT1	%rdi
+
+#define RT0d	%esi
+#define RT1d	%edi
+
+#define XKEY0	%xmm0
+#define XKEY1	%xmm1
+#define XKEY2	%xmm2
+#define XKEY3	%xmm3
+#define XKEY4	%xmm4
+#define XKEY5	%xmm5
+#define XKEY6	%xmm6
+#define XKEY7	%xmm7
+
+#define XSTATE0	%xmm8
+#define XSTATE1	%xmm9
+#define XSTATE2	%xmm10
+#define XSTATE3	%xmm11
+#define XSTATE4	%xmm12
+#define XSTATE5	%xmm13
+#define XSTATE6	%xmm14
+#define XSTATE7	%xmm15
+
+/***********************************************************************
+ * AMD64 assembly implementation of Whirlpool.
+ *  - Using table-lookups
+ *  - Store state in XMM registers
+ ***********************************************************************/
+#define __do_whirl(op, ri, \
+		   b0, b1, b2, b3, b4, b5, b6, b7, \
+		   load_ri, load_arg) \
+	movzbl		ri ## bl,	RT0d; \
+	movzbl		ri ## bh,	RT1d; \
+	shrq		$16,		ri; \
+	op ## q		C7(RTAB,RT0,8),	b7; \
+	op ## q		C6(RTAB,RT1,8),	b6; \
+	movzbl		ri ## bl,	RT0d; \
+	movzbl		ri ## bh,	RT1d; \
+	shrq		$16,		ri; \
+	op ## q		C5(RTAB,RT0,8),	b5; \
+	op ## q		C4(RTAB,RT1,8),	b4; \
+	movzbl		ri ## bl,	RT0d; \
+	movzbl		ri ## bh,	RT1d; \
+	shrl		$16,		ri ## d; \
+	op ## q		C3(RTAB,RT0,8),	b3; \
+	op ## q		C2(RTAB,RT1,8),	b2; \
+	movzbl		ri ## bl,	RT0d; \
+	movzbl		ri ## bh,	RT1d; \
+	load_ri(	load_arg,	ri); \
+	op ## q		C1(RTAB,RT0,8),	b1; \
+	op ## q		C0(RTAB,RT1,8),	b0;
+
+#define do_whirl(op, ri, rb_add, load_ri, load_arg) \
+	__do_whirl(op, ##ri, rb_add, load_ri, load_arg)
+
+#define dummy(...) /*_*/
+
+#define do_movq(src, dst) movq src, dst;
+
+#define RB_ADD0 RB0, RB1, RB2, RB3, RB4, RB5, RB6, RB7
+#define RB_ADD1 RB1, RB2, RB3, RB4, RB5, RB6, RB7, RB0
+#define RB_ADD2 RB2, RB3, RB4, RB5, RB6, RB7, RB0, RB1
+#define RB_ADD3 RB3, RB4, RB5, RB6, RB7, RB0, RB1, RB2
+#define RB_ADD4 RB4, RB5, RB6, RB7, RB0, RB1, RB2, RB3
+#define RB_ADD5 RB5, RB6, RB7, RB0, RB1, RB2, RB3, RB4
+#define RB_ADD6 RB6, RB7, RB0, RB1, RB2, RB3, RB4, RB5
+#define RB_ADD7 RB7, RB0, RB1, RB2, RB3, RB4, RB5, RB6
+
+.align 8
+.globl _gcry_whirlpool_transform_amd64
+.type  _gcry_whirlpool_transform_amd64, at function;
+
+_gcry_whirlpool_transform_amd64:
+	/* input:
+	 *	%rdi: state
+	 *	%rsi: inblk
+	 *	%rdx: nblks
+	 *      %rcx: look-up tables
+	 */
+	cmp $0, %rdx;
+	je .Lskip;
+
+	subq $STACK_MAX, %rsp;
+	movq %rbp, STACK_RBP(%rsp);
+	movq %rbx, STACK_RBX(%rsp);
+	movq %r12, STACK_R12(%rsp);
+	movq %r13, STACK_R13(%rsp);
+	movq %r14, STACK_R14(%rsp);
+	movq %r15, STACK_R15(%rsp);
+
+	movq %rdx, STACK_NBLKS(%rsp);
+	movq %rdi, STACK_STATEP(%rsp);
+	movq %rsi, STACK_DATAP(%rsp);
+
+	movq %rcx, RTAB;
+
+	jmp .Lfirst_block;
+
+.align 8
+.Lblock_loop:
+	movq STACK_DATAP(%rsp), %rsi;
+	movq RI1, %rdi;
+
+.Lfirst_block:
+	/* load data_block */
+	movq 0*8(%rsi), RB0;
+	movq 1*8(%rsi), RB1;
+	bswapq RB0;
+	movq 2*8(%rsi), RB2;
+	bswapq RB1;
+	movq 3*8(%rsi), RB3;
+	bswapq RB2;
+	movq 4*8(%rsi), RB4;
+	bswapq RB3;
+	movq 5*8(%rsi), RB5;
+	bswapq RB4;
+	movq RB0, XSTATE0;
+	movq 6*8(%rsi), RB6;
+	bswapq RB5;
+	movq RB1, XSTATE1;
+	movq 7*8(%rsi), RB7;
+	bswapq RB6;
+	movq RB2, XSTATE2;
+	bswapq RB7;
+	movq RB3, XSTATE3;
+	movq RB4, XSTATE4;
+	movq RB5, XSTATE5;
+	movq RB6, XSTATE6;
+	movq RB7, XSTATE7;
+
+	/* load key */
+	movq 0*8(%rdi), XKEY0;
+	movq 1*8(%rdi), XKEY1;
+	movq 2*8(%rdi), XKEY2;
+	movq 3*8(%rdi), XKEY3;
+	movq 4*8(%rdi), XKEY4;
+	movq 5*8(%rdi), XKEY5;
+	movq 6*8(%rdi), XKEY6;
+	movq 7*8(%rdi), XKEY7;
+
+	movq XKEY0, RI1;
+	movq XKEY1, RI2;
+	movq XKEY2, RI3;
+	movq XKEY3, RI4;
+
+	/* prepare and store state */
+	pxor XKEY0, XSTATE0;
+	pxor XKEY1, XSTATE1;
+	pxor XKEY2, XSTATE2;
+	pxor XKEY3, XSTATE3;
+	pxor XKEY4, XSTATE4;
+	pxor XKEY5, XSTATE5;
+	pxor XKEY6, XSTATE6;
+	pxor XKEY7, XSTATE7;
+
+	movq XSTATE0, 0*8(%rdi);
+	movq XSTATE1, 1*8(%rdi);
+	movq XSTATE2, 2*8(%rdi);
+	movq XSTATE3, 3*8(%rdi);
+	movq XSTATE4, 4*8(%rdi);
+	movq XSTATE5, 5*8(%rdi);
+	movq XSTATE6, 6*8(%rdi);
+	movq XSTATE7, 7*8(%rdi);
+
+	addq $64, STACK_DATAP(%rsp);
+	movl $(0), STACK_ROUNDS(%rsp);
+.align 8
+.Lround_loop:
+	do_whirl(mov, RI1 /*XKEY0*/, RB_ADD0, do_movq, XKEY4);
+	do_whirl(xor, RI2 /*XKEY1*/, RB_ADD1, do_movq, XKEY5);
+	do_whirl(xor, RI3 /*XKEY2*/, RB_ADD2, do_movq, XKEY6);
+	do_whirl(xor, RI4 /*XKEY3*/, RB_ADD3, do_movq, XKEY7);
+	do_whirl(xor, RI1 /*XKEY0*/, RB_ADD4, do_movq, XSTATE0);
+	do_whirl(xor, RI2 /*XKEY1*/, RB_ADD5, do_movq, XSTATE1);
+	do_whirl(xor, RI3 /*XKEY2*/, RB_ADD6, do_movq, XSTATE2);
+	do_whirl(xor, RI4 /*XKEY3*/, RB_ADD7, do_movq, XSTATE3);
+
+	movl STACK_ROUNDS(%rsp), RT0d;
+	movq RB1, XKEY1;
+	addl $1, STACK_ROUNDS(%rsp);
+	movq RB2, XKEY2;
+	movq RB3, XKEY3;
+	xorq RC(RTAB,RT0,8), RB0; /* Add round constant */
+	movq RB4, XKEY4;
+	movq RB5, XKEY5;
+	movq RB0, XKEY0;
+	movq RB6, XKEY6;
+	movq RB7, XKEY7;
+
+	do_whirl(xor, RI1 /*XSTATE0*/, RB_ADD0, do_movq, XSTATE4);
+	do_whirl(xor, RI2 /*XSTATE1*/, RB_ADD1, do_movq, XSTATE5);
+	do_whirl(xor, RI3 /*XSTATE2*/, RB_ADD2, do_movq, XSTATE6);
+	do_whirl(xor, RI4 /*XSTATE3*/, RB_ADD3, do_movq, XSTATE7);
+
+	cmpl $10, STACK_ROUNDS(%rsp);
+	je .Lis_last_round;
+
+	do_whirl(xor, RI1 /*XSTATE4*/, RB_ADD4, do_movq, XKEY0);
+	do_whirl(xor, RI2 /*XSTATE5*/, RB_ADD5, do_movq, XKEY1);
+	do_whirl(xor, RI3 /*XSTATE6*/, RB_ADD6, do_movq, XKEY2);
+	do_whirl(xor, RI4 /*XSTATE7*/, RB_ADD7, do_movq, XKEY3);
+	movq RB0, XSTATE0;
+	movq RB1, XSTATE1;
+	movq RB2, XSTATE2;
+	movq RB3, XSTATE3;
+	movq RB4, XSTATE4;
+	movq RB5, XSTATE5;
+	movq RB6, XSTATE6;
+	movq RB7, XSTATE7;
+
+	jmp .Lround_loop;
+.align 8
+.Lis_last_round:
+	do_whirl(xor, RI1 /*XSTATE4*/, RB_ADD4, dummy, _);
+	movq STACK_STATEP(%rsp), RI1;
+	do_whirl(xor, RI2 /*XSTATE5*/, RB_ADD5, dummy, _);
+	do_whirl(xor, RI3 /*XSTATE6*/, RB_ADD6, dummy, _);
+	do_whirl(xor, RI4 /*XSTATE7*/, RB_ADD7, dummy, _);
+
+	/* store state */
+	xorq RB0, 0*8(RI1);
+	xorq RB1, 1*8(RI1);
+	xorq RB2, 2*8(RI1);
+	xorq RB3, 3*8(RI1);
+	xorq RB4, 4*8(RI1);
+	xorq RB5, 5*8(RI1);
+	xorq RB6, 6*8(RI1);
+	xorq RB7, 7*8(RI1);
+
+	subq $1, STACK_NBLKS(%rsp);
+	jnz .Lblock_loop;
+
+	movq STACK_RBP(%rsp), %rbp;
+	movq STACK_RBX(%rsp), %rbx;
+	movq STACK_R12(%rsp), %r12;
+	movq STACK_R13(%rsp), %r13;
+	movq STACK_R14(%rsp), %r14;
+	movq STACK_R15(%rsp), %r15;
+	addq $STACK_MAX, %rsp;
+.Lskip:
+	movl $(STACK_MAX + 8), %eax;
+	ret;
+.size _gcry_whirlpool_transform_amd64,.-_gcry_whirlpool_transform_amd64;
+
+#endif
+#endif
diff --git a/cipher/whirlpool.c b/cipher/whirlpool.c
index ffc6662..2732f63 100644
--- a/cipher/whirlpool.c
+++ b/cipher/whirlpool.c
@@ -40,6 +40,14 @@
 #include "bufhelp.h"
 #include "hash-common.h"
 
+/* USE_AMD64_ASM indicates whether to use AMD64 assembly code. */
+#undef USE_AMD64_ASM
+#if defined(__x86_64__) && defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS)
+# define USE_AMD64_ASM 1
+#endif
+
+

+
 /* Size of a whirlpool block (in bytes).  */
 #define BLOCK_SIZE 64
 
@@ -89,8 +97,15 @@ typedef struct {
 
 

 
+
+struct whirlpool_tables_s {
+  u64 RC[R];
+  u64 C[8][256];
+};
+
+static const struct whirlpool_tables_s tab =
+{
 /* Round constants.  */
-static const u64 rc[R] =
   {
     U64_C (0x1823c6e887b8014f),
     U64_C (0x36a6d2f5796f9152),
@@ -102,13 +117,9 @@ static const u64 rc[R] =
     U64_C (0xe427418ba77d95d8),
     U64_C (0xfbee7c66dd17479e),
     U64_C (0xca2dbf07ad5a8333),
-  };
-
-

-
+  },
 /* Main lookup boxes.  */
-static const u64 C0[256] =
-  {
+  { {
     U64_C (0x18186018c07830d8), U64_C (0x23238c2305af4626),
     U64_C (0xc6c63fc67ef991b8), U64_C (0xe8e887e8136fcdfb),
     U64_C (0x878726874ca113cb), U64_C (0xb8b8dab8a9626d11),
@@ -237,10 +248,7 @@ static const u64 C0[256] =
     U64_C (0x98985a98b4c22d2c), U64_C (0xa4a4aaa4490e55ed),
     U64_C (0x2828a0285d885075), U64_C (0x5c5c6d5cda31b886),
     U64_C (0xf8f8c7f8933fed6b), U64_C (0x8686228644a411c2),
-  };
-
-static const u64 C1[256] =
-  {
+  }, {
     U64_C (0xd818186018c07830), U64_C (0x2623238c2305af46),
     U64_C (0xb8c6c63fc67ef991), U64_C (0xfbe8e887e8136fcd),
     U64_C (0xcb878726874ca113), U64_C (0x11b8b8dab8a9626d),
@@ -369,10 +377,7 @@ static const u64 C1[256] =
     U64_C (0x2c98985a98b4c22d), U64_C (0xeda4a4aaa4490e55),
     U64_C (0x752828a0285d8850), U64_C (0x865c5c6d5cda31b8),
     U64_C (0x6bf8f8c7f8933fed), U64_C (0xc28686228644a411),
-  };
-
-static const u64 C2[256] =
-  {
+  }, {
     U64_C (0x30d818186018c078), U64_C (0x462623238c2305af),
     U64_C (0x91b8c6c63fc67ef9), U64_C (0xcdfbe8e887e8136f),
     U64_C (0x13cb878726874ca1), U64_C (0x6d11b8b8dab8a962),
@@ -501,10 +506,7 @@ static const u64 C2[256] =
     U64_C (0x2d2c98985a98b4c2), U64_C (0x55eda4a4aaa4490e),
     U64_C (0x50752828a0285d88), U64_C (0xb8865c5c6d5cda31),
     U64_C (0xed6bf8f8c7f8933f), U64_C (0x11c28686228644a4),
-  };
-
-static const u64 C3[256] =
-  {
+  }, {
     U64_C (0x7830d818186018c0), U64_C (0xaf462623238c2305),
     U64_C (0xf991b8c6c63fc67e), U64_C (0x6fcdfbe8e887e813),
     U64_C (0xa113cb878726874c), U64_C (0x626d11b8b8dab8a9),
@@ -633,10 +635,7 @@ static const u64 C3[256] =
     U64_C (0xc22d2c98985a98b4), U64_C (0x0e55eda4a4aaa449),
     U64_C (0x8850752828a0285d), U64_C (0x31b8865c5c6d5cda),
     U64_C (0x3fed6bf8f8c7f893), U64_C (0xa411c28686228644),
-  };
-
-static const u64 C4[256] =
-  {
+  }, {
     U64_C (0xc07830d818186018), U64_C (0x05af462623238c23),
     U64_C (0x7ef991b8c6c63fc6), U64_C (0x136fcdfbe8e887e8),
     U64_C (0x4ca113cb87872687), U64_C (0xa9626d11b8b8dab8),
@@ -765,10 +764,7 @@ static const u64 C4[256] =
     U64_C (0xb4c22d2c98985a98), U64_C (0x490e55eda4a4aaa4),
     U64_C (0x5d8850752828a028), U64_C (0xda31b8865c5c6d5c),
     U64_C (0x933fed6bf8f8c7f8), U64_C (0x44a411c286862286),
-  };
-
-static const u64 C5[256] =
-  {
+  }, {
     U64_C (0x18c07830d8181860), U64_C (0x2305af462623238c),
     U64_C (0xc67ef991b8c6c63f), U64_C (0xe8136fcdfbe8e887),
     U64_C (0x874ca113cb878726), U64_C (0xb8a9626d11b8b8da),
@@ -897,10 +893,7 @@ static const u64 C5[256] =
     U64_C (0x98b4c22d2c98985a), U64_C (0xa4490e55eda4a4aa),
     U64_C (0x285d8850752828a0), U64_C (0x5cda31b8865c5c6d),
     U64_C (0xf8933fed6bf8f8c7), U64_C (0x8644a411c2868622),
-  };
-
-static const u64 C6[256] =
-  {
+  }, {
     U64_C (0x6018c07830d81818), U64_C (0x8c2305af46262323),
     U64_C (0x3fc67ef991b8c6c6), U64_C (0x87e8136fcdfbe8e8),
     U64_C (0x26874ca113cb8787), U64_C (0xdab8a9626d11b8b8),
@@ -1029,10 +1022,7 @@ static const u64 C6[256] =
     U64_C (0x5a98b4c22d2c9898), U64_C (0xaaa4490e55eda4a4),
     U64_C (0xa0285d8850752828), U64_C (0x6d5cda31b8865c5c),
     U64_C (0xc7f8933fed6bf8f8), U64_C (0x228644a411c28686),
-  };
-
-static const u64 C7[256] =
-  {
+  }, {
     U64_C (0x186018c07830d818), U64_C (0x238c2305af462623),
     U64_C (0xc63fc67ef991b8c6), U64_C (0xe887e8136fcdfbe8),
     U64_C (0x8726874ca113cb87), U64_C (0xb8dab8a9626d11b8),
@@ -1161,7 +1151,18 @@ static const u64 C7[256] =
     U64_C (0x985a98b4c22d2c98), U64_C (0xa4aaa4490e55eda4),
     U64_C (0x28a0285d88507528), U64_C (0x5c6d5cda31b8865c),
     U64_C (0xf8c7f8933fed6bf8), U64_C (0x86228644a411c286),
-  };
+  } }
+};
+#define C tab.C
+#define C0 C[0]
+#define C1 C[1]
+#define C2 C[2]
+#define C3 C[3]
+#define C4 C[4]
+#define C5 C[5]
+#define C6 C[6]
+#define C7 C[7]
+#define rc tab.RC
 
 

 
@@ -1189,6 +1190,22 @@ whirlpool_init (void *ctx, unsigned int flags)
 }
 
 
+#ifdef USE_AMD64_ASM
+
+extern unsigned int
+_gcry_whirlpool_transform_amd64(u64 *state, const unsigned char *data,
+	size_t nblks, const struct whirlpool_tables_s *tables);
+
+static unsigned int
+whirlpool_transform (void *ctx, const unsigned char *data, size_t nblks)
+{
+  whirlpool_context_t *context = ctx;
+
+  return _gcry_whirlpool_transform_amd64(
+		context->hash_state, data, nblks, &tab);
+}
+
+#else /* USE_AMD64_ASM */
 
 /*
  * Transform block.
@@ -1308,6 +1325,8 @@ whirlpool_transform ( void *c, const unsigned char *data, size_t nblks )
   return burn;
 }
 
+#endif /* !USE_AMD64_ASM */
+
 
 /* Bug compatibility Whirlpool version.  */
 static void
diff --git a/configure.ac b/configure.ac
index 18db662..d14b7f6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1943,6 +1943,13 @@ LIST_MEMBER(whirlpool, $enabled_digests)
 if test "$found" = "1" ; then
    GCRYPT_DIGESTS="$GCRYPT_DIGESTS whirlpool.lo"
    AC_DEFINE(USE_WHIRLPOOL, 1, [Defined if this module should be included])
+
+   case "${host}" in
+      x86_64-*-*)
+         # Build with the assembly implementation
+         GCRYPT_DIGESTS="$GCRYPT_DIGESTS whirlpool-sse2-amd64.lo"
+      ;;
+   esac
 fi
 
 # rmd160 and sha1 should be included always.




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