From 9373a5c43386acf1a3d1a796ac03ccb32d901058 Mon Sep 17 00:00:00 2001
From: pooler <pooler@litecoinpool.org>
Date: Tue, 24 Feb 2015 17:06:20 +0100
Subject: [PATCH] Add optimized PowerPC code

---
 Makefile.am  |    3 +
 README       |    2 +
 configure.ac |    4 +
 cpu-miner.c  |    6 +
 miner.h      |    2 +-
 scrypt-ppc.S | 1136 ++++++++++++++++++++++++++++++
 scrypt.c     |    8 +-
 sha2-ppc.S   | 1919 ++++++++++++++++++++++++++++++++++++++++++++++++++
 sha2.c       |    4 +-
 9 files changed, 3081 insertions(+), 3 deletions(-)
 create mode 100644 scrypt-ppc.S
 create mode 100644 sha2-ppc.S

diff --git a/Makefile.am b/Makefile.am
index ca8f9e5..a23a508 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -28,6 +28,9 @@ endif
 if ARCH_ARM
 minerd_SOURCES += sha2-arm.S scrypt-arm.S
 endif
+if ARCH_PPC
+minerd_SOURCES += sha2-ppc.S scrypt-ppc.S
+endif
 endif
 minerd_LDFLAGS	= $(PTHREAD_FLAGS)
 minerd_LDADD	= @LIBCURL@ @JANSSON_LIBS@ @PTHREAD_LIBS@ @WS2_LIBS@
diff --git a/README b/README
index 2dd93ac..192590f 100644
--- a/README
+++ b/README
@@ -40,6 +40,8 @@ Architecture-specific notes:
 		but the decision whether to use them is made at compile time,
 		based on compiler-defined macros.
 		To use NEON instructions, add "-mfpu=neon" to CFLAGS.
+	PowerPC: No runtime CPU detection.
+		To use AltiVec instructions, add "-maltivec" to CFLAGS.
 	x86:	The miner checks for SSE2 instructions support at runtime,
 		and uses them if they are available.
 	x86-64:	The miner can take advantage of AVX, AVX2 and XOP instructions,
diff --git a/configure.ac b/configure.ac
index fa5a6ab..8172247 100644
--- a/configure.ac
+++ b/configure.ac
@@ -48,6 +48,9 @@ case $target in
   arm*-*-*)
     have_arm=true
     ;;
+  powerpc*-*-*)
+    have_ppc=true
+    ;;
 esac
 
 PTHREAD_FLAGS="-pthread"
@@ -108,6 +111,7 @@ AM_CONDITIONAL([USE_ASM], [test x$enable_assembly != xno])
 AM_CONDITIONAL([ARCH_x86], [test x$have_x86 = xtrue])
 AM_CONDITIONAL([ARCH_x86_64], [test x$have_x86_64 = xtrue])
 AM_CONDITIONAL([ARCH_ARM], [test x$have_arm = xtrue])
+AM_CONDITIONAL([ARCH_PPC], [test x$have_ppc = xtrue])
 
 if test x$request_jansson = xtrue
 then
diff --git a/cpu-miner.c b/cpu-miner.c
index f848b4e..d43500f 100644
--- a/cpu-miner.c
+++ b/cpu-miner.c
@@ -1456,6 +1456,12 @@ static void show_version_and_exit(void)
 #if defined(__ARM_NEON__)
 		" NEON"
 #endif
+#endif
+#if defined(USE_ASM) && (defined(__powerpc__) || defined(__ppc__) || defined(__PPC__))
+		" PowerPC"
+#if defined(__ALTIVEC__)
+		" AltiVec"
+#endif
 #endif
 		"\n");
 
diff --git a/miner.h b/miner.h
index cc5adbd..08e1092 100644
--- a/miner.h
+++ b/miner.h
@@ -137,7 +137,7 @@ void sha256_transform(uint32_t *state, const uint32_t *block, int swap);
 void sha256d(unsigned char *hash, const unsigned char *data, int len);
 
 #ifdef USE_ASM
-#if defined(__ARM_NEON__) || defined(__i386__) || defined(__x86_64__)
+#if defined(__ARM_NEON__) || defined(__ALTIVEC__) || defined(__i386__) || defined(__x86_64__)
 #define HAVE_SHA256_4WAY 1
 int sha256_use_4way();
 void sha256_init_4way(uint32_t *state);
diff --git a/scrypt-ppc.S b/scrypt-ppc.S
new file mode 100644
index 0000000..6c4efc9
--- /dev/null
+++ b/scrypt-ppc.S
@@ -0,0 +1,1136 @@
+/*
+ * Copyright 2014-2015 pooler@litecoinpool.org
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.  See COPYING for more details.
+ */
+
+#include "cpuminer-config.h"
+
+#if defined(USE_ASM) && (defined(__powerpc__) || defined(__ppc__) || defined(__PPC__))
+
+#ifndef __APPLE__
+
+#define r0 0
+#define r1 1
+#define r2 2
+#define r3 3
+#define r4 4
+#define r5 5
+#define r6 6
+#define r7 7
+#define r8 8
+#define r9 9
+#define r10 10
+#define r11 11
+#define r12 12
+#define r13 13
+#define r14 14
+#define r15 15
+#define r16 16
+#define r17 17
+#define r18 18
+#define r19 19
+#define r20 20
+#define r21 21
+#define r22 22
+#define r23 23
+#define r24 24
+#define r25 25
+#define r26 26
+#define r27 27
+#define r28 28
+#define r29 29
+#define r30 30
+#define r31 31
+
+#ifdef __ALTIVEC__
+#define v0 0
+#define v1 1
+#define v2 2
+#define v3 3
+#define v4 4
+#define v5 5
+#define v6 6
+#define v7 7
+#define v8 8
+#define v9 9
+#define v10 10
+#define v11 11
+#define v12 12
+#define v13 13
+#define v14 14
+#define v15 15
+#define v16 16
+#define v17 17
+#define v18 18
+#define v19 19
+#define v20 20
+#define v21 21
+#define v22 22
+#define v23 23
+#define v24 24
+#define v25 25
+#define v26 26
+#define v27 27
+#define v28 28
+#define v29 29
+#define v30 30
+#define v31 31
+#endif
+
+#endif
+
+
+#ifdef __ALTIVEC__
+
+#ifdef __APPLE__
+	.machine ppc7400
+#endif
+
+.macro salsa8_core_doubleround
+	vadduwm	v4, v0, v1
+	vrlw	v4, v4, v16
+	vxor	v3, v3, v4
+	
+	vadduwm	v4, v3, v0
+	vrlw	v4, v4, v17
+	vxor	v2, v2, v4
+	
+	vadduwm	v4, v2, v3
+	vrlw	v4, v4, v18
+	vsldoi	v3, v3, v3, 12
+	vxor	v1, v1, v4
+	
+	vadduwm	v4, v1, v2
+	vrlw	v4, v4, v19
+	vsldoi	v1, v1, v1, 4
+	vxor	v0, v0, v4
+	
+	vadduwm	v4, v0, v3
+	vrlw	v4, v4, v16
+	vsldoi	v2, v2, v2, 8
+	vxor	v1, v1, v4
+	
+	vadduwm	v4, v1, v0
+	vrlw	v4, v4, v17
+	vxor	v2, v2, v4
+	
+	vadduwm	v4, v2, v1
+	vrlw	v4, v4, v18
+	vsldoi	v1, v1, v1, 12
+	vxor	v3, v3, v4
+	
+	vadduwm	v4, v3, v2
+	vrlw	v4, v4, v19
+	vsldoi	v3, v3, v3, 4
+	vxor	v0, v0, v4
+	vsldoi	v2, v2, v2, 8
+.endm
+
+.macro salsa8_core
+	salsa8_core_doubleround
+	salsa8_core_doubleround
+	salsa8_core_doubleround
+	salsa8_core_doubleround
+.endm
+
+	.text
+	.align 2
+	.globl scrypt_core
+	.globl _scrypt_core
+#ifdef __ELF__
+	.type scrypt_core, %function
+#endif
+scrypt_core:
+_scrypt_core:
+	stwu	r1, -4*4(r1)
+	mflr	r0
+	stw	r0, 5*4(r1)
+	mfspr	r0, 256
+	stw	r0, 2*4(r1)
+	oris	r0, r0, 0xffff
+	ori	r0, r0, 0xf000
+	mtspr	256, r0
+	
+	li	r6, 1*16
+	li	r7, 2*16
+	li	r8, 3*16
+	li	r9, 4*16
+	li	r10, 5*16
+	li	r11, 6*16
+	li	r12, 7*16
+	
+	lvx	v8, 0, r3
+	lvx	v9, r3, r6
+	lvx	v10, r3, r7
+	lvx	v11, r3, r8
+	lvx	v12, r3, r9
+	lvx	v13, r3, r10
+	lvx	v14, r3, r11
+	lvx	v15, r3, r12
+	
+	vxor	v0, v0, v0
+	vnor	v1, v0, v0
+	vsldoi	v2, v0, v1, 4
+	vsldoi	v3, v2, v0, 8
+	vor	v3, v3, v2
+	vsldoi	v1, v0, v1, 8
+	
+	vor	v4, v8, v8
+	vsel	v8, v8, v9, v3
+	vsel	v9, v9, v10, v3
+	vsel	v10, v10, v11, v3
+	vsel	v11, v11, v4, v3
+	vor	v4, v8, v8
+	vor	v5, v9, v9
+	vsel	v8, v8, v10, v1
+	vsel	v9, v11, v9, v1
+	vsel	v10, v10, v4, v1
+	vsel	v11, v5, v11, v1
+	
+	vor	v4, v12, v12
+	vsel	v12, v12, v13, v3
+	vsel	v13, v13, v14, v3
+	vsel	v14, v14, v15, v3
+	vsel	v15, v15, v4, v3
+	vor	v4, v12, v12
+	vor	v5, v13, v13
+	vsel	v12, v12, v14, v1
+	vsel	v13, v15, v13, v1
+	vsel	v14, v14, v4, v1
+	vsel	v15, v5, v15, v1
+	
+	vspltisw	v16, 7
+	vspltisw	v17, 9
+	vspltisw	v18, 13
+	vadduwm	v19, v17, v17
+	
+	mtctr	r5
+scrypt_core_loop1:
+	vxor	v8, v8, v12
+	stvx	v8, 0, r4
+	vxor	v9, v9, v13
+	stvx	v9, r4, r6
+	vxor	v10, v10, v14
+	stvx	v10, r4, r7
+	vxor	v11, v11, v15
+	stvx	v11, r4, r8
+	vor	v0, v8, v8
+	stvx	v12, r4, r9
+	vor	v1, v9, v9
+	stvx	v13, r4, r10
+	vor	v2, v10, v10
+	stvx	v14, r4, r11
+	vor	v3, v11, v11
+	stvx	v15, r4, r12
+	
+	salsa8_core
+	
+	vadduwm	v8, v8, v0
+	vadduwm	v9, v9, v1
+	vadduwm	v10, v10, v2
+	vadduwm	v11, v11, v3
+	
+	vxor	v12, v12, v8
+	vxor	v13, v13, v9
+	vxor	v14, v14, v10
+	vxor	v15, v15, v11
+	vor	v0, v12, v12
+	vor	v1, v13, v13
+	vor	v2, v14, v14
+	vor	v3, v15, v15
+	
+	salsa8_core
+	
+	vadduwm	v12, v12, v0
+	vadduwm	v13, v13, v1
+	vadduwm	v14, v14, v2
+	vadduwm	v15, v15, v3
+	
+	addi	r4, r4, 32*4
+	bdnz	scrypt_core_loop1
+	
+	stvx	v12, 0, r3
+	slwi	r6, r5, 7
+	subf	r4, r6, r4
+	mtctr	r5
+	addi	r5, r5, -1
+	addi	r7, r4, 1*16
+	addi	r8, r4, 2*16
+	addi	r9, r4, 3*16
+scrypt_core_loop2:
+	lwz	r6, 0(r3)
+	and	r6, r6, r5
+	slwi	r6, r6, 7
+	lvx	v0, r4, r6
+	vxor	v8, v8, v12
+	lvx	v1, r7, r6
+	vxor	v9, v9, v13
+	lvx	v2, r8, r6
+	vxor	v10, v10, v14
+	lvx	v3, r9, r6
+	vxor	v11, v11, v15
+	vxor	v0, v0, v8
+	vxor	v1, v1, v9
+	vxor	v2, v2, v10
+	vxor	v3, v3, v11
+	addi	r6, r6, 64
+	vor	v8, v0, v0
+	vor	v9, v1, v1
+	lvx	v5, r4, r6
+	vor	v10, v2, v2
+	lvx	v6, r7, r6
+	vor	v11, v3, v3
+	lvx	v7, r8, r6
+	
+	salsa8_core
+	
+	vadduwm	v8, v8, v0
+	lvx	v0, r9, r6
+	vadduwm	v9, v9, v1
+	vadduwm	v10, v10, v2
+	vadduwm	v11, v11, v3
+	
+	vxor	v12, v12, v5
+	vxor	v13, v13, v6
+	vxor	v14, v14, v7
+	vxor	v15, v15, v0
+	vxor	v12, v12, v8
+	vxor	v13, v13, v9
+	vxor	v14, v14, v10
+	vxor	v15, v15, v11
+	vor	v0, v12, v12
+	vor	v1, v13, v13
+	vor	v2, v14, v14
+	vor	v3, v15, v15
+	
+	salsa8_core
+	
+	vadduwm	v12, v12, v0
+	stvx	v12, 0, r3
+	vadduwm	v13, v13, v1
+	vadduwm	v14, v14, v2
+	vadduwm	v15, v15, v3
+	
+	bdnz	scrypt_core_loop2
+	
+	vxor	v0, v0, v0
+	vnor	v1, v0, v0
+	vsldoi	v2, v0, v1, 4
+	vsldoi	v3, v2, v0, 8
+	vor	v3, v3, v2
+	vsldoi	v1, v0, v1, 8
+	
+	vor	v4, v8, v8
+	vsel	v8, v8, v9, v3
+	vsel	v9, v9, v10, v3
+	vsel	v10, v10, v11, v3
+	vsel	v11, v11, v4, v3
+	vor	v4, v8, v8
+	vor	v5, v9, v9
+	vsel	v8, v8, v10, v1
+	vsel	v9, v11, v9, v1
+	vsel	v10, v10, v4, v1
+	vsel	v11, v5, v11, v1
+	
+	vor	v4, v12, v12
+	vsel	v12, v12, v13, v3
+	vsel	v13, v13, v14, v3
+	vsel	v14, v14, v15, v3
+	vsel	v15, v15, v4, v3
+	vor	v4, v12, v12
+	vor	v5, v13, v13
+	vsel	v12, v12, v14, v1
+	vsel	v13, v15, v13, v1
+	vsel	v14, v14, v4, v1
+	vsel	v15, v5, v15, v1
+	
+	li	r6, 1*16
+	li	r7, 2*16
+	li	r8, 3*16
+	li	r9, 4*16
+	
+	stvx	v8, 0, r3
+	stvx	v9, r3, r6
+	stvx	v10, r3, r7
+	stvx	v11, r3, r8
+	stvx	v12, r3, r9
+	stvx	v13, r3, r10
+	stvx	v14, r3, r11
+	stvx	v15, r3, r12
+	
+	lwz	r0, 2*4(r1)
+	mtspr	256, r0
+	lwz	r0, 5*4(r1)
+	mtlr	r0
+	addi	r1, r1, 4*4
+	blr
+
+#else /* __ALTIVEC__ */
+
+.macro salsa8_core_doubleround
+	add	r0, r16, r28
+	add	r5, r21, r17
+	add	r6, r26, r22
+	add	r7, r31, r27
+	rotlwi	r0, r0, 7
+	rotlwi	r5, r5, 7
+	rotlwi	r6, r6, 7
+	rotlwi	r7, r7, 7
+	xor	r20, r20, r0
+	xor	r25, r25, r5
+	xor	r30, r30, r6
+	xor	r19, r19, r7
+	
+	add	r0, r20, r16
+	add	r5, r25, r21
+	add	r6, r30, r26
+	add	r7, r19, r31
+	rotlwi	r0, r0, 9
+	rotlwi	r5, r5, 9
+	rotlwi	r6, r6, 9
+	rotlwi	r7, r7, 9
+	xor	r24, r24, r0
+	xor	r29, r29, r5
+	xor	r18, r18, r6
+	xor	r23, r23, r7
+	
+	add	r0, r24, r20
+	add	r5, r29, r25
+	add	r6, r18, r30
+	add	r7, r23, r19
+	rotlwi	r0, r0, 13
+	rotlwi	r5, r5, 13
+	rotlwi	r6, r6, 13
+	rotlwi	r7, r7, 13
+	xor	r28, r28, r0
+	xor	r17, r17, r5
+	xor	r22, r22, r6
+	xor	r27, r27, r7
+	
+	add	r0, r28, r24
+	add	r5, r17, r29
+	add	r6, r22, r18
+	add	r7, r27, r23
+	rotlwi	r0, r0, 18
+	rotlwi	r5, r5, 18
+	rotlwi	r6, r6, 18
+	rotlwi	r7, r7, 18
+	xor	r16, r16, r0
+	xor	r21, r21, r5
+	xor	r26, r26, r6
+	xor	r31, r31, r7
+	
+	add	r0, r16, r19
+	add	r5, r21, r20
+	add	r6, r26, r25
+	add	r7, r31, r30
+	rotlwi	r0, r0, 7
+	rotlwi	r5, r5, 7
+	rotlwi	r6, r6, 7
+	rotlwi	r7, r7, 7
+	xor	r17, r17, r0
+	xor	r22, r22, r5
+	xor	r27, r27, r6
+	xor	r28, r28, r7
+	
+	add	r0, r17, r16
+	add	r5, r22, r21
+	add	r6, r27, r26
+	add	r7, r28, r31
+	rotlwi	r0, r0, 9
+	rotlwi	r5, r5, 9
+	rotlwi	r6, r6, 9
+	rotlwi	r7, r7, 9
+	xor	r18, r18, r0
+	xor	r23, r23, r5
+	xor	r24, r24, r6
+	xor	r29, r29, r7
+	
+	add	r0, r18, r17
+	add	r5, r23, r22
+	add	r6, r24, r27
+	add	r7, r29, r28
+	rotlwi	r0, r0, 13
+	rotlwi	r5, r5, 13
+	rotlwi	r6, r6, 13
+	rotlwi	r7, r7, 13
+	xor	r19, r19, r0
+	xor	r20, r20, r5
+	xor	r25, r25, r6
+	xor	r30, r30, r7
+	
+	add	r0, r19, r18
+	add	r5, r20, r23
+	add	r6, r25, r24
+	add	r7, r30, r29
+	rotlwi	r0, r0, 18
+	rotlwi	r5, r5, 18
+	rotlwi	r6, r6, 18
+	rotlwi	r7, r7, 18
+	xor	r16, r16, r0
+	xor	r21, r21, r5
+	xor	r26, r26, r6
+	xor	r31, r31, r7
+.endm
+
+.macro salsa8_core
+	salsa8_core_doubleround
+	salsa8_core_doubleround
+	salsa8_core_doubleround
+	salsa8_core_doubleround
+.endm
+
+	.text
+	.align 2
+	.globl scrypt_core
+	.globl _scrypt_core
+#ifdef __ELF__
+	.type scrypt_core, %function
+#endif
+scrypt_core:
+_scrypt_core:
+	stwu	r1, -48*4(r1)
+	mflr	r0
+	stw	r0, 49*4(r1)
+	stw	r5, 2*4(r1)
+	stw	r13, 3*4(r1)
+	stw	r14, 4*4(r1)
+	stw	r15, 5*4(r1)
+	stw	r16, 6*4(r1)
+	stw	r17, 7*4(r1)
+	stw	r18, 8*4(r1)
+	stw	r19, 9*4(r1)
+	stw	r20, 10*4(r1)
+	stw	r21, 11*4(r1)
+	stw	r22, 12*4(r1)
+	stw	r23, 13*4(r1)
+	stw	r24, 14*4(r1)
+	stw	r25, 15*4(r1)
+	stw	r26, 16*4(r1)
+	stw	r27, 17*4(r1)
+	stw	r28, 18*4(r1)
+	stw	r29, 19*4(r1)
+	stw	r30, 20*4(r1)
+	stw	r31, 21*4(r1)
+	stw	r3, 22*4(r1)
+	
+	lwz	r16, 0*4(r3)
+	lwz	r17, 1*4(r3)
+	lwz	r18, 2*4(r3)
+	lwz	r19, 3*4(r3)
+	lwz	r20, 4*4(r3)
+	lwz	r21, 5*4(r3)
+	lwz	r22, 6*4(r3)
+	lwz	r23, 7*4(r3)
+	stw	r16, 24*4(r1)
+	stw	r17, 25*4(r1)
+	stw	r18, 26*4(r1)
+	stw	r19, 27*4(r1)
+	stw	r20, 28*4(r1)
+	stw	r21, 29*4(r1)
+	stw	r22, 30*4(r1)
+	stw	r23, 31*4(r1)
+	lwz	r24, 8*4(r3)
+	lwz	r25, 9*4(r3)
+	lwz	r26, 10*4(r3)
+	lwz	r27, 11*4(r3)
+	lwz	r28, 12*4(r3)
+	lwz	r29, 13*4(r3)
+	lwz	r30, 14*4(r3)
+	lwz	r31, 15*4(r3)
+	stw	r24, 32*4(r1)
+	stw	r25, 33*4(r1)
+	stw	r26, 34*4(r1)
+	stw	r27, 35*4(r1)
+	stw	r28, 36*4(r1)
+	stw	r29, 37*4(r1)
+	stw	r30, 38*4(r1)
+	stw	r31, 39*4(r1)
+	lwz	r16, 16*4(r3)
+	lwz	r17, 17*4(r3)
+	lwz	r18, 18*4(r3)
+	lwz	r19, 19*4(r3)
+	lwz	r20, 20*4(r3)
+	lwz	r21, 21*4(r3)
+	lwz	r22, 22*4(r3)
+	lwz	r23, 23*4(r3)
+	stw	r16, 40*4(r1)
+	stw	r17, 41*4(r1)
+	stw	r18, 42*4(r1)
+	stw	r19, 43*4(r1)
+	stw	r20, 44*4(r1)
+	stw	r21, 45*4(r1)
+	stw	r22, 46*4(r1)
+	stw	r23, 47*4(r1)
+	lwz	r8, 24*4(r3)
+	lwz	r9, 25*4(r3)
+	lwz	r10, 26*4(r3)
+	lwz	r11, 27*4(r3)
+	lwz	r12, 28*4(r3)
+	lwz	r13, 29*4(r3)
+	lwz	r14, 30*4(r3)
+	lwz	r15, 31*4(r3)
+	
+	mtctr	r5
+scrypt_core_loop1:
+	lwz	r16, 24*4(r1)
+	lwz	r17, 25*4(r1)
+	lwz	r18, 26*4(r1)
+	lwz	r19, 27*4(r1)
+	lwz	r20, 28*4(r1)
+	lwz	r21, 29*4(r1)
+	lwz	r22, 30*4(r1)
+	lwz	r23, 31*4(r1)
+	lwz	r24, 32*4(r1)
+	lwz	r25, 33*4(r1)
+	lwz	r26, 34*4(r1)
+	lwz	r27, 35*4(r1)
+	lwz	r28, 36*4(r1)
+	lwz	r29, 37*4(r1)
+	lwz	r30, 38*4(r1)
+	lwz	r31, 39*4(r1)
+	
+	lwz	r0, 40*4(r1)
+	lwz	r5, 41*4(r1)
+	lwz	r6, 42*4(r1)
+	lwz	r7, 43*4(r1)
+	xor	r16, r16, r0
+	xor	r17, r17, r5
+	xor	r18, r18, r6
+	xor	r19, r19, r7
+	stw	r16, 0*4(r4)
+	stw	r17, 1*4(r4)
+	stw	r18, 2*4(r4)
+	stw	r19, 3*4(r4)
+	stw	r0, 16*4(r4)
+	stw	r5, 17*4(r4)
+	stw	r6, 18*4(r4)
+	stw	r7, 19*4(r4)
+	
+	lwz	r0, 44*4(r1)
+	lwz	r5, 45*4(r1)
+	lwz	r6, 46*4(r1)
+	lwz	r7, 47*4(r1)
+	xor	r20, r20, r0
+	xor	r21, r21, r5
+	xor	r22, r22, r6
+	xor	r23, r23, r7
+	stw	r0, 20*4(r4)
+	stw	r5, 21*4(r4)
+	stw	r6, 22*4(r4)
+	stw	r7, 23*4(r4)
+	stw	r20, 4*4(r4)
+	stw	r21, 5*4(r4)
+	stw	r22, 6*4(r4)
+	stw	r23, 7*4(r4)
+	
+	xor	r24, r24, r8
+	xor	r25, r25, r9
+	xor	r26, r26, r10
+	xor	r27, r27, r11
+	xor	r28, r28, r12
+	xor	r29, r29, r13
+	xor	r30, r30, r14
+	xor	r31, r31, r15
+	stw	r24, 8*4(r4)
+	stw	r25, 9*4(r4)
+	stw	r26, 10*4(r4)
+	stw	r27, 11*4(r4)
+	stw	r28, 12*4(r4)
+	stw	r29, 13*4(r4)
+	stw	r30, 14*4(r4)
+	stw	r31, 15*4(r4)
+	stw	r8, 24*4(r4)
+	stw	r9, 25*4(r4)
+	stw	r10, 26*4(r4)
+	stw	r11, 27*4(r4)
+	stw	r12, 28*4(r4)
+	stw	r13, 29*4(r4)
+	stw	r14, 30*4(r4)
+	stw	r15, 31*4(r4)
+	
+	salsa8_core
+	
+	lwz	r0, 0*4(r4)
+	lwz	r5, 1*4(r4)
+	lwz	r6, 2*4(r4)
+	lwz	r7, 3*4(r4)
+	add	r16, r16, r0
+	add	r17, r17, r5
+	add	r18, r18, r6
+	add	r19, r19, r7
+	lwz	r0, 4*4(r4)
+	lwz	r5, 5*4(r4)
+	lwz	r6, 6*4(r4)
+	lwz	r7, 7*4(r4)
+	add	r20, r20, r0
+	add	r21, r21, r5
+	add	r22, r22, r6
+	add	r23, r23, r7
+	lwz	r0, 8*4(r4)
+	lwz	r5, 9*4(r4)
+	lwz	r6, 10*4(r4)
+	lwz	r7, 11*4(r4)
+	add	r24, r24, r0
+	add	r25, r25, r5
+	add	r26, r26, r6
+	add	r27, r27, r7
+	lwz	r0, 12*4(r4)
+	lwz	r5, 13*4(r4)
+	lwz	r6, 14*4(r4)
+	lwz	r7, 15*4(r4)
+	add	r28, r28, r0
+	add	r29, r29, r5
+	add	r30, r30, r6
+	add	r31, r31, r7
+	
+	stw	r16, 24*4(r1)
+	stw	r17, 25*4(r1)
+	stw	r18, 26*4(r1)
+	stw	r19, 27*4(r1)
+	stw	r20, 28*4(r1)
+	stw	r21, 29*4(r1)
+	stw	r22, 30*4(r1)
+	stw	r23, 31*4(r1)
+	stw	r24, 32*4(r1)
+	stw	r25, 33*4(r1)
+	stw	r26, 34*4(r1)
+	stw	r27, 35*4(r1)
+	stw	r28, 36*4(r1)
+	stw	r29, 37*4(r1)
+	stw	r30, 38*4(r1)
+	stw	r31, 39*4(r1)
+	
+	lwz	r0, 40*4(r1)
+	lwz	r5, 41*4(r1)
+	lwz	r6, 42*4(r1)
+	lwz	r7, 43*4(r1)
+	xor	r16, r16, r0
+	xor	r17, r17, r5
+	xor	r18, r18, r6
+	xor	r19, r19, r7
+	lwz	r0, 44*4(r1)
+	lwz	r5, 45*4(r1)
+	lwz	r6, 46*4(r1)
+	lwz	r7, 47*4(r1)
+	xor	r20, r20, r0
+	xor	r21, r21, r5
+	xor	r22, r22, r6
+	xor	r23, r23, r7
+	xor	r24, r24, r8
+	xor	r25, r25, r9
+	xor	r26, r26, r10
+	xor	r27, r27, r11
+	xor	r28, r28, r12
+	xor	r29, r29, r13
+	xor	r30, r30, r14
+	xor	r31, r31, r15
+	stw	r16, 40*4(r1)
+	stw	r17, 41*4(r1)
+	stw	r18, 42*4(r1)
+	stw	r19, 43*4(r1)
+	mr	r8, r24
+	mr	r9, r25
+	mr	r10, r26
+	mr	r11, r27
+	stw	r20, 44*4(r1)
+	stw	r21, 45*4(r1)
+	stw	r22, 46*4(r1)
+	stw	r23, 47*4(r1)
+	mr	r12, r28
+	mr	r13, r29
+	mr	r14, r30
+	mr	r15, r31
+	
+	salsa8_core
+	
+	lwz	r0, 40*4(r1)
+	lwz	r5, 41*4(r1)
+	lwz	r6, 42*4(r1)
+	lwz	r7, 43*4(r1)
+	add	r16, r16, r0
+	add	r17, r17, r5
+	add	r18, r18, r6
+	add	r19, r19, r7
+	lwz	r0, 44*4(r1)
+	lwz	r5, 45*4(r1)
+	lwz	r6, 46*4(r1)
+	lwz	r7, 47*4(r1)
+	add	r20, r20, r0
+	add	r21, r21, r5
+	add	r22, r22, r6
+	add	r23, r23, r7
+	add	r8, r8, r24
+	add	r9, r9, r25
+	add	r10, r10, r26
+	add	r11, r11, r27
+	stw	r16, 40*4(r1)
+	stw	r17, 41*4(r1)
+	stw	r18, 42*4(r1)
+	stw	r19, 43*4(r1)
+	add	r12, r12, r28
+	add	r13, r13, r29
+	add	r14, r14, r30
+	add	r15, r15, r31
+	stw	r20, 44*4(r1)
+	stw	r21, 45*4(r1)
+	stw	r22, 46*4(r1)
+	stw	r23, 47*4(r1)
+	
+	addi	r4, r4, 32*4
+	bdnz	scrypt_core_loop1
+	
+	lwz	r5, 2*4(r1)
+	slwi	r3, r5, 7
+	subf	r4, r3, r4
+	mtctr	r5
+	addi	r5, r5, -1
+	stw	r5, 2*4(r1)
+scrypt_core_loop2:
+	and	r3, r16, r5
+	slwi	r3, r3, 7
+	add	r3, r3, r4
+	mr	r0, r16
+	mr	r5, r17
+	mr	r6, r18
+	mr	r7, r19
+	lwz	r16, 24*4(r1)
+	lwz	r17, 25*4(r1)
+	lwz	r18, 26*4(r1)
+	lwz	r19, 27*4(r1)
+	lwz	r20, 28*4(r1)
+	lwz	r21, 29*4(r1)
+	lwz	r22, 30*4(r1)
+	lwz	r23, 31*4(r1)
+	lwz	r24, 32*4(r1)
+	lwz	r25, 33*4(r1)
+	lwz	r26, 34*4(r1)
+	lwz	r27, 35*4(r1)
+	lwz	r28, 36*4(r1)
+	lwz	r29, 37*4(r1)
+	lwz	r30, 38*4(r1)
+	lwz	r31, 39*4(r1)
+	xor	r16, r16, r0
+	xor	r17, r17, r5
+	xor	r18, r18, r6
+	xor	r19, r19, r7
+	lwz	r0, 44*4(r1)
+	lwz	r5, 45*4(r1)
+	lwz	r6, 46*4(r1)
+	lwz	r7, 47*4(r1)
+	xor	r20, r20, r0
+	xor	r21, r21, r5
+	xor	r22, r22, r6
+	xor	r23, r23, r7
+	xor	r24, r24, r8
+	xor	r25, r25, r9
+	xor	r26, r26, r10
+	xor	r27, r27, r11
+	xor	r28, r28, r12
+	xor	r29, r29, r13
+	xor	r30, r30, r14
+	xor	r31, r31, r15
+	
+	lwz	r0, 0*4(r3)
+	lwz	r5, 1*4(r3)
+	lwz	r6, 2*4(r3)
+	lwz	r7, 3*4(r3)
+	xor	r16, r16, r0
+	xor	r17, r17, r5
+	xor	r18, r18, r6
+	xor	r19, r19, r7
+	lwz	r0, 4*4(r3)
+	lwz	r5, 5*4(r3)
+	lwz	r6, 6*4(r3)
+	lwz	r7, 7*4(r3)
+	xor	r20, r20, r0
+	xor	r21, r21, r5
+	xor	r22, r22, r6
+	xor	r23, r23, r7
+	lwz	r0, 8*4(r3)
+	lwz	r5, 9*4(r3)
+	lwz	r6, 10*4(r3)
+	lwz	r7, 11*4(r3)
+	xor	r24, r24, r0
+	xor	r25, r25, r5
+	xor	r26, r26, r6
+	xor	r27, r27, r7
+	lwz	r0, 12*4(r3)
+	lwz	r5, 13*4(r3)
+	lwz	r6, 14*4(r3)
+	lwz	r7, 15*4(r3)
+	xor	r28, r28, r0
+	xor	r29, r29, r5
+	xor	r30, r30, r6
+	xor	r31, r31, r7
+	
+	stw	r16, 24*4(r1)
+	stw	r17, 25*4(r1)
+	stw	r18, 26*4(r1)
+	stw	r19, 27*4(r1)
+	stw	r20, 28*4(r1)
+	stw	r21, 29*4(r1)
+	stw	r22, 30*4(r1)
+	stw	r23, 31*4(r1)
+	stw	r24, 32*4(r1)
+	stw	r25, 33*4(r1)
+	stw	r26, 34*4(r1)
+	stw	r27, 35*4(r1)
+	stw	r28, 36*4(r1)
+	stw	r29, 37*4(r1)
+	stw	r30, 38*4(r1)
+	stw	r31, 39*4(r1)
+	
+	salsa8_core
+	
+	lwz	r0, 24*4(r1)
+	lwz	r5, 25*4(r1)
+	lwz	r6, 26*4(r1)
+	lwz	r7, 27*4(r1)
+	add	r16, r16, r0
+	add	r17, r17, r5
+	add	r18, r18, r6
+	add	r19, r19, r7
+	lwz	r0, 28*4(r1)
+	lwz	r5, 29*4(r1)
+	lwz	r6, 30*4(r1)
+	lwz	r7, 31*4(r1)
+	add	r20, r20, r0
+	add	r21, r21, r5
+	add	r22, r22, r6
+	add	r23, r23, r7
+	lwz	r0, 32*4(r1)
+	lwz	r5, 33*4(r1)
+	lwz	r6, 34*4(r1)
+	lwz	r7, 35*4(r1)
+	add	r24, r24, r0
+	add	r25, r25, r5
+	add	r26, r26, r6
+	add	r27, r27, r7
+	lwz	r0, 36*4(r1)
+	lwz	r5, 37*4(r1)
+	lwz	r6, 38*4(r1)
+	lwz	r7, 39*4(r1)
+	add	r28, r28, r0
+	add	r29, r29, r5
+	add	r30, r30, r6
+	add	r31, r31, r7
+	
+	stw	r16, 24*4(r1)
+	stw	r17, 25*4(r1)
+	stw	r18, 26*4(r1)
+	stw	r19, 27*4(r1)
+	stw	r20, 28*4(r1)
+	stw	r21, 29*4(r1)
+	stw	r22, 30*4(r1)
+	stw	r23, 31*4(r1)
+	stw	r24, 32*4(r1)
+	stw	r25, 33*4(r1)
+	stw	r26, 34*4(r1)
+	stw	r27, 35*4(r1)
+	stw	r28, 36*4(r1)
+	stw	r29, 37*4(r1)
+	stw	r30, 38*4(r1)
+	stw	r31, 39*4(r1)
+	
+	lwz	r0, 16*4(r3)
+	lwz	r5, 17*4(r3)
+	lwz	r6, 18*4(r3)
+	lwz	r7, 19*4(r3)
+	xor	r16, r16, r0
+	xor	r17, r17, r5
+	xor	r18, r18, r6
+	xor	r19, r19, r7
+	lwz	r0, 20*4(r3)
+	lwz	r5, 21*4(r3)
+	lwz	r6, 22*4(r3)
+	lwz	r7, 23*4(r3)
+	xor	r20, r20, r0
+	xor	r21, r21, r5
+	xor	r22, r22, r6
+	xor	r23, r23, r7
+	lwz	r0, 24*4(r3)
+	lwz	r5, 25*4(r3)
+	lwz	r6, 26*4(r3)
+	lwz	r7, 27*4(r3)
+	xor	r24, r24, r0
+	xor	r25, r25, r5
+	xor	r26, r26, r6
+	xor	r27, r27, r7
+	lwz	r0, 28*4(r3)
+	lwz	r5, 29*4(r3)
+	lwz	r6, 30*4(r3)
+	lwz	r7, 31*4(r3)
+	xor	r28, r28, r0
+	xor	r29, r29, r5
+	xor	r30, r30, r6
+	xor	r31, r31, r7
+	
+	lwz	r0, 40*4(r1)
+	lwz	r5, 41*4(r1)
+	lwz	r6, 42*4(r1)
+	lwz	r7, 43*4(r1)
+	xor	r16, r16, r0
+	xor	r17, r17, r5
+	xor	r18, r18, r6
+	xor	r19, r19, r7
+	lwz	r0, 44*4(r1)
+	lwz	r5, 45*4(r1)
+	lwz	r6, 46*4(r1)
+	lwz	r7, 47*4(r1)
+	xor	r20, r20, r0
+	xor	r21, r21, r5
+	xor	r22, r22, r6
+	xor	r23, r23, r7
+	xor	r24, r24, r8
+	xor	r25, r25, r9
+	xor	r26, r26, r10
+	xor	r27, r27, r11
+	xor	r28, r28, r12
+	xor	r29, r29, r13
+	xor	r30, r30, r14
+	xor	r31, r31, r15
+	stw	r16, 40*4(r1)
+	stw	r17, 41*4(r1)
+	stw	r18, 42*4(r1)
+	stw	r19, 43*4(r1)
+	mr	r8, r24
+	mr	r9, r25
+	mr	r10, r26
+	mr	r11, r27
+	stw	r20, 44*4(r1)
+	stw	r21, 45*4(r1)
+	stw	r22, 46*4(r1)
+	stw	r23, 47*4(r1)
+	mr	r12, r28
+	mr	r13, r29
+	mr	r14, r30
+	mr	r15, r31
+	
+	salsa8_core
+	
+	lwz	r0, 40*4(r1)
+	lwz	r5, 41*4(r1)
+	lwz	r6, 42*4(r1)
+	lwz	r7, 43*4(r1)
+	add	r16, r16, r0
+	add	r17, r17, r5
+	add	r18, r18, r6
+	add	r19, r19, r7
+	lwz	r0, 44*4(r1)
+	lwz	r5, 45*4(r1)
+	lwz	r6, 46*4(r1)
+	lwz	r7, 47*4(r1)
+	add	r20, r20, r0
+	add	r21, r21, r5
+	add	r22, r22, r6
+	add	r23, r23, r7
+	lwz	r5, 2*4(r1)
+	add	r8, r8, r24
+	add	r9, r9, r25
+	add	r10, r10, r26
+	add	r11, r11, r27
+	add	r12, r12, r28
+	add	r13, r13, r29
+	add	r14, r14, r30
+	add	r15, r15, r31
+	stw	r16, 40*4(r1)
+	stw	r17, 41*4(r1)
+	stw	r18, 42*4(r1)
+	stw	r19, 43*4(r1)
+	stw	r20, 44*4(r1)
+	stw	r21, 45*4(r1)
+	stw	r22, 46*4(r1)
+	stw	r23, 47*4(r1)
+	bdnz	scrypt_core_loop2
+	
+	lwz	r3, 22*4(r1)
+	
+	lwz	r16, 24*4(r1)
+	lwz	r17, 25*4(r1)
+	lwz	r18, 26*4(r1)
+	lwz	r19, 27*4(r1)
+	lwz	r20, 28*4(r1)
+	lwz	r21, 29*4(r1)
+	lwz	r22, 30*4(r1)
+	lwz	r23, 31*4(r1)
+	stw	r16, 0*4(r3)
+	stw	r17, 1*4(r3)
+	stw	r18, 2*4(r3)
+	stw	r19, 3*4(r3)
+	stw	r20, 4*4(r3)
+	stw	r21, 5*4(r3)
+	stw	r22, 6*4(r3)
+	stw	r23, 7*4(r3)
+	lwz	r24, 32*4(r1)
+	lwz	r25, 33*4(r1)
+	lwz	r26, 34*4(r1)
+	lwz	r27, 35*4(r1)
+	lwz	r28, 36*4(r1)
+	lwz	r29, 37*4(r1)
+	lwz	r30, 38*4(r1)
+	lwz	r31, 39*4(r1)
+	stw	r24, 8*4(r3)
+	stw	r25, 9*4(r3)
+	stw	r26, 10*4(r3)
+	stw	r27, 11*4(r3)
+	stw	r28, 12*4(r3)
+	stw	r29, 13*4(r3)
+	stw	r30, 14*4(r3)
+	stw	r31, 15*4(r3)
+	lwz	r16, 40*4(r1)
+	lwz	r17, 41*4(r1)
+	lwz	r18, 42*4(r1)
+	lwz	r19, 43*4(r1)
+	lwz	r20, 44*4(r1)
+	lwz	r21, 45*4(r1)
+	lwz	r22, 46*4(r1)
+	lwz	r23, 47*4(r1)
+	stw	r16, 16*4(r3)
+	stw	r17, 17*4(r3)
+	stw	r18, 18*4(r3)
+	stw	r19, 19*4(r3)
+	stw	r20, 20*4(r3)
+	stw	r21, 21*4(r3)
+	stw	r22, 22*4(r3)
+	stw	r23, 23*4(r3)
+	stw	r8, 24*4(r3)
+	stw	r9, 25*4(r3)
+	stw	r10, 26*4(r3)
+	stw	r11, 27*4(r3)
+	stw	r12, 28*4(r3)
+	stw	r13, 29*4(r3)
+	stw	r14, 30*4(r3)
+	stw	r15, 31*4(r3)
+	
+	lwz	r13, 3*4(r1)
+	lwz	r14, 4*4(r1)
+	lwz	r15, 5*4(r1)
+	lwz	r16, 6*4(r1)
+	lwz	r17, 7*4(r1)
+	lwz	r18, 8*4(r1)
+	lwz	r19, 9*4(r1)
+	lwz	r20, 10*4(r1)
+	lwz	r21, 11*4(r1)
+	lwz	r22, 12*4(r1)
+	lwz	r23, 13*4(r1)
+	lwz	r24, 14*4(r1)
+	lwz	r25, 15*4(r1)
+	lwz	r26, 16*4(r1)
+	lwz	r27, 17*4(r1)
+	lwz	r28, 18*4(r1)
+	lwz	r29, 19*4(r1)
+	lwz	r30, 20*4(r1)
+	lwz	r31, 21*4(r1)
+	lwz	r0, 49*4(r1)
+	mtlr	r0
+	addi	r1, r1, 48*4
+	blr
+
+#endif /* __ALTIVEC__ */
+
+#endif
diff --git a/scrypt.c b/scrypt.c
index f75123e..b8dce87 100644
--- a/scrypt.c
+++ b/scrypt.c
@@ -409,6 +409,12 @@ void scrypt_core(uint32_t *X, uint32_t *V, int N);
 void scrypt_core_3way(uint32_t *X, uint32_t *V, int N);
 #endif
 
+#elif defined(USE_ASM) && (defined(__powerpc__) || defined(__ppc__) || defined(__PPC__))
+
+#define SCRYPT_MAX_WAYS 4
+#define scrypt_best_throughput() 1
+void scrypt_core(uint32_t *X, uint32_t *V, int N);
+
 #else
 
 static inline void xor_salsa8(uint32_t B[16], const uint32_t Bx[16])
@@ -513,7 +519,7 @@ static void scrypt_1024_1_1_256(const uint32_t *input, uint32_t *output,
 	uint32_t *midstate, unsigned char *scratchpad, int N)
 {
 	uint32_t tstate[8], ostate[8];
-	uint32_t X[32];
+	uint32_t X[32] __attribute__((aligned(128)));
 	uint32_t *V;
 	
 	V = (uint32_t *)(((uintptr_t)(scratchpad) + 63) & ~ (uintptr_t)(63));
diff --git a/sha2-ppc.S b/sha2-ppc.S
new file mode 100644
index 0000000..803fd77
--- /dev/null
+++ b/sha2-ppc.S
@@ -0,0 +1,1919 @@
+/*
+ * Copyright 2014-2015 pooler@litecoinpool.org
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.  See COPYING for more details.
+ */
+
+#include "cpuminer-config.h"
+
+#if defined(USE_ASM) && (defined(__powerpc__) || defined(__ppc__) || defined(__PPC__))
+
+#ifdef __APPLE__
+
+#define HI(name) ha16(name)
+#define LO(name) lo16(name)
+
+#else
+
+#define HI(name) name@ha
+#define LO(name) name@l
+
+#define r0 0
+#define r1 1
+#define r2 2
+#define r3 3
+#define r4 4
+#define r5 5
+#define r6 6
+#define r7 7
+#define r8 8
+#define r9 9
+#define r10 10
+#define r11 11
+#define r12 12
+#define r13 13
+#define r14 14
+#define r15 15
+#define r16 16
+#define r17 17
+#define r18 18
+#define r19 19
+#define r20 20
+#define r21 21
+#define r22 22
+#define r23 23
+#define r24 24
+#define r25 25
+#define r26 26
+#define r27 27
+#define r28 28
+#define r29 29
+#define r30 30
+#define r31 31
+
+#ifdef __ALTIVEC__
+#define v0 0
+#define v1 1
+#define v2 2
+#define v3 3
+#define v4 4
+#define v5 5
+#define v6 6
+#define v7 7
+#define v8 8
+#define v9 9
+#define v10 10
+#define v11 11
+#define v12 12
+#define v13 13
+#define v14 14
+#define v15 15
+#define v16 16
+#define v17 17
+#define v18 18
+#define v19 19
+#define v20 20
+#define v21 21
+#define v22 22
+#define v23 23
+#define v24 24
+#define v25 25
+#define v26 26
+#define v27 27
+#define v28 28
+#define v29 29
+#define v30 30
+#define v31 31
+#endif
+
+#endif
+
+
+	.data
+	.align 2
+sha256_h:
+	.long 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a
+	.long 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
+
+	.data
+	.align 2
+sha256_k:
+	.long 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
+	.long 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
+	.long 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3
+	.long 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
+	.long 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc
+	.long 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
+	.long 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7
+	.long 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
+	.long 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13
+	.long 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
+	.long 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3
+	.long 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
+	.long 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5
+	.long 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
+	.long 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208
+	.long 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+
+
+.macro sha256_extend_doubleround i, rw, wo, ra, rb, ry, rz
+	lwz	r14, \wo+(\i+1)*4(\rw)
+	rotrwi	r12, \ry, 17
+	rotrwi	r13, \ry, 19
+	add	r11, r11, \ra
+	xor	r12, r12, r13
+	srwi	r13, \ry, 10
+	rotrwi	\ra, r14, 7
+	xor	r12, r12, r13
+	rotrwi	r13, r14, 18
+	add	r12, r12, r11
+	xor	\ra, \ra, r13
+	srwi	r13, r14, 3
+	lwz	r11, \wo+(\i+2)*4(\rw)
+	xor	\ra, \ra, r13
+	rotrwi	r13, \rz, 19
+	add	\ra, \ra, r12
+
+	rotrwi	r12, \rz, 17
+	add	r14, r14, \rb
+	xor	r12, r12, r13
+	srwi	r13, \rz, 10
+	rotrwi	\rb, r11, 7
+	xor	r12, r12, r13
+	rotrwi	r13, r11, 18
+	stw	\ra, \wo+(\i+16)*4(\rw)
+	xor	\rb, \rb, r13
+	srwi	r13, r11, 3
+	add	r14, r14, r12
+	xor	\rb, \rb, r13
+	add	\rb, \rb, r14
+	stw	\rb, \wo+(\i+17)*4(\rw)
+.endm
+
+
+.macro sha256_main_round i, rk, rw, wo, ra, rb, rc, rd, re, rf, rg, rh
+	lwz	r12, \wo+(\i)*4(\rw)
+	and	r13, \rf, \re
+	andc	r14, \rg, \re
+	lwz	r15, (\i)*4(\rk)
+	or	r14, r14, r13
+	rotrwi	r13, \re, 5
+	add	\rh, \rh, r14
+	xor	r14, \re, r13
+	rotrwi	r13, \re, 19
+	add	\rh, \rh, r12
+	xor	r14, r14, r13
+	add	\rh, \rh, r15
+	rotrwi	r13, r14, 6
+	xor	r15, \ra, \rb
+	add	\rh, \rh, r13
+
+	rotrwi	r13, \ra, 11
+	and	r15, r15, \rc
+	xor	r12, \ra, r13
+	rotrwi	r13, \ra, 20
+	and	r14, \ra, \rb
+	xor	r12, r12, r13
+	xor	r14, r14, r15
+	rotrwi	r13, r12, 2
+	add	r15, \rh, r14
+	add	\rh, \rh, \rd
+	add	\rd, r15, r13
+.endm
+
+.macro sha256_main_quadround i, rk, rw, wo
+	sha256_main_round \i+0, \rk, \rw, \wo, r4, r5, r6, r7, r8, r9, r10, r11
+	sha256_main_round \i+1, \rk, \rw, \wo, r7, r4, r5, r6, r11, r8, r9, r10
+	sha256_main_round \i+2, \rk, \rw, \wo, r6, r7, r4, r5, r10, r11, r8, r9
+	sha256_main_round \i+3, \rk, \rw, \wo, r5, r6, r7, r4, r9, r10, r11, r8
+.endm
+
+
+	.text
+	.align 2
+	.globl sha256_transform
+	.globl _sha256_transform
+#ifdef __ELF__
+	.type sha256_transform, %function
+#endif
+sha256_transform:
+_sha256_transform:
+	stwu	r1, -72*4(r1)
+	cmpwi	0, r5, 0
+	stw	r13, 2*4(r1)
+	stw	r14, 3*4(r1)
+	stw	r15, 4*4(r1)
+	stw	r16, 5*4(r1)
+	
+	bne	0, sha256_transform_swap
+	
+	lwz	r11, 0*4(r4)
+	lwz	r14, 1*4(r4)
+	lwz	r15, 2*4(r4)
+	lwz	r7, 3*4(r4)
+	lwz	r8, 4*4(r4)
+	lwz	r9, 5*4(r4)
+	lwz	r10, 6*4(r4)
+	lwz	r0, 7*4(r4)
+	lwz	r12, 8*4(r4)
+	lwz	r13, 9*4(r4)
+	lwz	r5, 10*4(r4)
+	lwz	r6, 11*4(r4)
+	stw	r11, 8*4+0*4(r1)
+	stw	r14, 8*4+1*4(r1)
+	stw	r15, 8*4+2*4(r1)
+	stw	r7, 8*4+3*4(r1)
+	stw	r8, 8*4+4*4(r1)
+	stw	r9, 8*4+5*4(r1)
+	stw	r10, 8*4+6*4(r1)
+	stw	r0, 8*4+7*4(r1)
+	stw	r12, 8*4+8*4(r1)
+	stw	r13, 8*4+9*4(r1)
+	stw	r5, 8*4+10*4(r1)
+	stw	r6, 8*4+11*4(r1)
+	lwz	r7, 12*4(r4)
+	lwz	r8, 13*4(r4)
+	lwz	r9, 14*4(r4)
+	lwz	r10, 15*4(r4)
+	mr	r4, r13
+	stw	r7, 8*4+12*4(r1)
+	stw	r8, 8*4+13*4(r1)
+	stw	r9, 8*4+14*4(r1)
+	stw	r10, 8*4+15*4(r1)
+	b	sha256_transform_extend
+	
+sha256_transform_swap:
+	li	r13, 1*4
+	li	r14, 2*4
+	li	r15, 3*4
+	lwbrx	r11, 0, r4
+	lwbrx	r7, r4, r13
+	lwbrx	r8, r4, r14
+	lwbrx	r9, r4, r15
+	addi	r4, r4, 4*4
+	stw	r11, 8*4+0*4(r1)
+	stw	r7, 8*4+1*4(r1)
+	stw	r8, 8*4+2*4(r1)
+	stw	r9, 8*4+3*4(r1)
+	lwbrx	r7, 0, r4
+	lwbrx	r8, r4, r13
+	lwbrx	r9, r4, r14
+	lwbrx	r10, r4, r15
+	addi	r4, r4, 4*4
+	stw	r7, 8*4+4*4(r1)
+	stw	r8, 8*4+5*4(r1)
+	stw	r9, 8*4+6*4(r1)
+	stw	r10, 8*4+7*4(r1)
+	lwbrx	r8, 0, r4
+	lwbrx	r12, r4, r13
+	lwbrx	r5, r4, r14
+	lwbrx	r6, r4, r15
+	addi	r4, r4, 4*4
+	stw	r8, 8*4+8*4(r1)
+	stw	r12, 8*4+9*4(r1)
+	stw	r5, 8*4+10*4(r1)
+	stw	r6, 8*4+11*4(r1)
+	lwbrx	r7, 0, r4
+	lwbrx	r8, r4, r13
+	lwbrx	r9, r4, r14
+	lwbrx	r10, r4, r15
+	mr	r4, r12
+	stw	r7, 8*4+12*4(r1)
+	stw	r8, 8*4+13*4(r1)
+	stw	r9, 8*4+14*4(r1)
+	stw	r10, 8*4+15*4(r1)
+	
+sha256_transform_extend:
+	sha256_extend_doubleround  0, r1, 8*4, r4, r5, r9, r10
+	sha256_extend_doubleround  2, r1, 8*4, r6, r7, r4, r5
+	sha256_extend_doubleround  4, r1, 8*4, r8, r9, r6, r7
+	sha256_extend_doubleround  6, r1, 8*4, r10, r4, r8, r9
+	sha256_extend_doubleround  8, r1, 8*4, r5, r6, r10, r4
+	sha256_extend_doubleround 10, r1, 8*4, r7, r8, r5, r6
+	sha256_extend_doubleround 12, r1, 8*4, r9, r10, r7, r8
+	sha256_extend_doubleround 14, r1, 8*4, r4, r5, r9, r10
+	sha256_extend_doubleround 16, r1, 8*4, r6, r7, r4, r5
+	sha256_extend_doubleround 18, r1, 8*4, r8, r9, r6, r7
+	sha256_extend_doubleround 20, r1, 8*4, r10, r4, r8, r9
+	sha256_extend_doubleround 22, r1, 8*4, r5, r6, r10, r4
+	sha256_extend_doubleround 24, r1, 8*4, r7, r8, r5, r6
+	sha256_extend_doubleround 26, r1, 8*4, r9, r10, r7, r8
+	sha256_extend_doubleround 28, r1, 8*4, r4, r5, r9, r10
+	sha256_extend_doubleround 30, r1, 8*4, r6, r7, r4, r5
+	sha256_extend_doubleround 32, r1, 8*4, r8, r9, r6, r7
+	sha256_extend_doubleround 34, r1, 8*4, r10, r4, r8, r9
+	sha256_extend_doubleround 36, r1, 8*4, r5, r6, r10, r4
+	sha256_extend_doubleround 38, r1, 8*4, r7, r8, r5, r6
+	sha256_extend_doubleround 40, r1, 8*4, r9, r10, r7, r8
+	sha256_extend_doubleround 42, r1, 8*4, r4, r5, r9, r10
+	sha256_extend_doubleround 44, r1, 8*4, r6, r7, r4, r5
+	sha256_extend_doubleround 46, r1, 8*4, r8, r9, r6, r7
+	
+	lwz	r4, 0*4(r3)
+	lwz	r5, 1*4(r3)
+	lwz	r6, 2*4(r3)
+	lwz	r7, 3*4(r3)
+	lwz	r8, 4*4(r3)
+	lwz	r9, 5*4(r3)
+	lwz	r10, 6*4(r3)
+	lwz	r11, 7*4(r3)
+	lis	r16, HI(sha256_k)
+	addi	r16, r16, LO(sha256_k)
+	sha256_main_quadround  0, r16, r1, 8*4
+	sha256_main_quadround  4, r16, r1, 8*4
+	sha256_main_quadround  8, r16, r1, 8*4
+	sha256_main_quadround 12, r16, r1, 8*4
+	sha256_main_quadround 16, r16, r1, 8*4
+	sha256_main_quadround 20, r16, r1, 8*4
+	sha256_main_quadround 24, r16, r1, 8*4
+	sha256_main_quadround 28, r16, r1, 8*4
+	sha256_main_quadround 32, r16, r1, 8*4
+	sha256_main_quadround 36, r16, r1, 8*4
+	sha256_main_quadround 40, r16, r1, 8*4
+	sha256_main_quadround 44, r16, r1, 8*4
+	sha256_main_quadround 48, r16, r1, 8*4
+	sha256_main_quadround 52, r16, r1, 8*4
+	sha256_main_quadround 56, r16, r1, 8*4
+	sha256_main_quadround 60, r16, r1, 8*4
+	
+	lwz	r12, 0*4(r3)
+	lwz	r13, 1*4(r3)
+	lwz	r14, 2*4(r3)
+	lwz	r15, 3*4(r3)
+	add	r4, r4, r12
+	add	r5, r5, r13
+	add	r6, r6, r14
+	add	r7, r7, r15
+	stw	r4, 0*4(r3)
+	stw	r5, 1*4(r3)
+	stw	r6, 2*4(r3)
+	stw	r7, 3*4(r3)
+	lwz	r12, 4*4(r3)
+	lwz	r13, 5*4(r3)
+	lwz	r14, 6*4(r3)
+	lwz	r15, 7*4(r3)
+	add	r8, r8, r12
+	add	r9, r9, r13
+	add	r10, r10, r14
+	add	r11, r11, r15
+	stw	r8, 4*4(r3)
+	stw	r9, 5*4(r3)
+	stw	r10, 6*4(r3)
+	stw	r11, 7*4(r3)
+	
+	lwz	r13, 2*4(r1)
+	lwz	r14, 3*4(r1)
+	lwz	r15, 4*4(r1)
+	lwz	r16, 5*4(r1)
+	addi	r1, r1, 72*4
+	blr
+
+
+	.text
+	.align 2
+	.globl sha256d_ms
+	.globl _sha256d_ms
+#ifdef __ELF__
+	.type sha256d_ms, %function
+#endif
+sha256d_ms:
+_sha256d_ms:
+	stwu	r1, -72*4(r1)
+	stw	r13, 2*4(r1)
+	stw	r14, 3*4(r1)
+	stw	r15, 4*4(r1)
+	stw	r16, 5*4(r1)
+	stw	r17, 6*4(r1)
+	stw	r18, 7*4(r1)
+	
+	mr	r17, r4
+	mr	r18, r5
+	mr	r16, r6
+	
+	lwz	r14, 3*4(r17)
+	lwz	r6, 18*4(r17)
+	lwz	r7, 19*4(r17)
+	
+	rotrwi	r12, r14, 7
+	rotrwi	r13, r14, 18
+	stw	r6, 8*4+18*4(r1)
+	xor	r12, r12, r13
+	srwi	r13, r14, 3
+	stw	r7, 8*4+19*4(r1)
+	xor	r12, r12, r13
+	lwz	r8, 20*4(r17)
+	add	r6, r6, r12
+	lwz	r10, 22*4(r17)
+	add	r7, r7, r14
+	stw	r6, 18*4(r17)
+	
+	rotrwi	r12, r6, 17
+	rotrwi	r13, r6, 19
+	stw	r7, 19*4(r17)
+	xor	r12, r12, r13
+	srwi	r13, r6, 10
+	stw	r8, 8*4+20*4(r1)
+	xor	r12, r12, r13
+	lwz	r4, 23*4(r17)
+	add	r8, r8, r12
+	lwz	r5, 24*4(r17)
+	
+	rotrwi	r9, r7, 17
+	rotrwi	r13, r7, 19
+	stw	r8, 20*4(r17)
+	xor	r9, r9, r13
+	srwi	r13, r7, 10
+	stw	r10, 8*4+21*4(r1)
+	xor	r9, r9, r13
+	stw	r4, 8*4+22*4(r1)
+	
+	rotrwi	r12, r8, 17
+	rotrwi	r13, r8, 19
+	stw	r9, 21*4(r17)
+	xor	r12, r12, r13
+	srwi	r13, r8, 10
+	stw	r5, 8*4+23*4(r1)
+	xor	r12, r12, r13
+	rotrwi	r14, r9, 17
+	rotrwi	r13, r9, 19
+	add	r10, r10, r12
+	lwz	r11, 30*4(r17)
+	
+	xor	r14, r14, r13
+	srwi	r13, r9, 10
+	stw	r10, 22*4(r17)
+	xor	r14, r14, r13
+	stw	r11, 8*4+24*4(r1)
+	add	r4, r4, r14
+	
+	rotrwi	r12, r10, 17
+	rotrwi	r13, r10, 19
+	stw	r4, 23*4(r17)
+	xor	r12, r12, r13
+	srwi	r13, r10, 10
+	rotrwi	r14, r4, 17
+	xor	r12, r12, r13
+	rotrwi	r13, r4, 19
+	xor	r14, r14, r13
+	srwi	r13, r4, 10
+	add	r5, r5, r12
+	xor	r14, r14, r13
+	stw	r5, 24*4(r17)
+	add	r6, r6, r14
+	
+	rotrwi	r12, r5, 17
+	rotrwi	r13, r5, 19
+	stw	r6, 25*4(r17)
+	xor	r12, r12, r13
+	srwi	r13, r5, 10
+	rotrwi	r14, r6, 17
+	xor	r12, r12, r13
+	rotrwi	r13, r6, 19
+	xor	r14, r14, r13
+	srwi	r13, r6, 10
+	add	r7, r7, r12
+	xor	r14, r14, r13
+	stw	r7, 26*4(r17)
+	add	r8, r8, r14
+	
+	rotrwi	r12, r7, 17
+	rotrwi	r13, r7, 19
+	stw	r8, 27*4(r17)
+	xor	r12, r12, r13
+	srwi	r13, r7, 10
+	rotrwi	r14, r8, 17
+	xor	r12, r12, r13
+	rotrwi	r13, r8, 19
+	xor	r14, r14, r13
+	srwi	r13, r8, 10
+	add	r9, r9, r12
+	xor	r14, r14, r13
+	stw	r9, 28*4(r17)
+	add	r10, r10, r14
+	
+	lwz	r14, 31*4(r17)
+	rotrwi	r12, r9, 17
+	rotrwi	r13, r9, 19
+	stw	r10, 29*4(r17)
+	xor	r12, r12, r13
+	srwi	r13, r9, 10
+	stw	r14, 8*4+25*4(r1)
+	xor	r12, r12, r13
+	add	r11, r11, r12
+	add	r5, r5, r14
+	rotrwi	r12, r10, 17
+	rotrwi	r13, r10, 19
+	add	r4, r4, r11
+	
+	lwz	r11, 16*4(r17)
+	xor	r12, r12, r13
+	srwi	r13, r10, 10
+	stw	r4, 30*4(r17)
+	xor	r12, r12, r13
+	add	r5, r5, r12
+	stw	r5, 31*4(r17)
+	
+	sha256_extend_doubleround 16, r17, 0, r6, r7, r4, r5
+	sha256_extend_doubleround 18, r17, 0, r8, r9, r6, r7
+	sha256_extend_doubleround 20, r17, 0, r10, r4, r8, r9
+	sha256_extend_doubleround 22, r17, 0, r5, r6, r10, r4
+	sha256_extend_doubleround 24, r17, 0, r7, r8, r5, r6
+	sha256_extend_doubleround 26, r17, 0, r9, r10, r7, r8
+	sha256_extend_doubleround 28, r17, 0, r4, r5, r9, r10
+	sha256_extend_doubleround 30, r17, 0, r6, r7, r4, r5
+	sha256_extend_doubleround 32, r17, 0, r8, r9, r6, r7
+	sha256_extend_doubleround 34, r17, 0, r10, r4, r8, r9
+	sha256_extend_doubleround 36, r17, 0, r5, r6, r10, r4
+	sha256_extend_doubleround 38, r17, 0, r7, r8, r5, r6
+	sha256_extend_doubleround 40, r17, 0, r9, r10, r7, r8
+	sha256_extend_doubleround 42, r17, 0, r4, r5, r9, r10
+	sha256_extend_doubleround 44, r17, 0, r6, r7, r4, r5
+	sha256_extend_doubleround 46, r17, 0, r8, r9, r6, r7
+	
+	lwz	r4,  0*4(r16)
+	lwz	r9,  1*4(r16)
+	lwz	r10, 2*4(r16)
+	lwz	r11, 3*4(r16)
+	lwz	r8,  4*4(r16)
+	lwz	r5,  5*4(r16)
+	lwz	r6,  6*4(r16)
+	lwz	r7,  7*4(r16)
+	lis	r16, HI(sha256_k)
+	addi	r16, r16, LO(sha256_k)
+	
+	sha256_main_round  3, r16, r17, 0, r5, r6, r7, r4, r9, r10, r11, r8
+	sha256_main_quadround  4, r16, r17, 0
+	sha256_main_quadround  8, r16, r17, 0
+	sha256_main_quadround 12, r16, r17, 0
+	sha256_main_quadround 16, r16, r17, 0
+	sha256_main_quadround 20, r16, r17, 0
+	sha256_main_quadround 24, r16, r17, 0
+	sha256_main_quadround 28, r16, r17, 0
+	sha256_main_quadround 32, r16, r17, 0
+	sha256_main_quadround 36, r16, r17, 0
+	sha256_main_quadround 40, r16, r17, 0
+	sha256_main_quadround 44, r16, r17, 0
+	sha256_main_quadround 48, r16, r17, 0
+	sha256_main_quadround 52, r16, r17, 0
+	sha256_main_quadround 56, r16, r17, 0
+	sha256_main_quadround 60, r16, r17, 0
+	
+	lwz	r12, 0*4(r18)
+	lwz	r13, 1*4(r18)
+	lwz	r14, 2*4(r18)
+	lwz	r15, 3*4(r18)
+	add	r4, r4, r12
+	add	r5, r5, r13
+	add	r6, r6, r14
+	add	r7, r7, r15
+	stw	r4, 8*4+0*4(r1)
+	stw	r5, 8*4+1*4(r1)
+	stw	r6, 8*4+2*4(r1)
+	stw	r7, 8*4+3*4(r1)
+	lwz	r12, 4*4(r18)
+	lwz	r13, 5*4(r18)
+	lwz	r14, 6*4(r18)
+	lwz	r15, 7*4(r18)
+	add	r8, r8, r12
+	add	r9, r9, r13
+	add	r10, r10, r14
+	add	r11, r11, r15
+	stw	r8, 8*4+4*4(r1)
+	stw	r9, 8*4+5*4(r1)
+	stw	r10, 8*4+6*4(r1)
+	stw	r11, 8*4+7*4(r1)
+
+	lwz	r4, 8*4+18*4(r1)
+	lwz	r5, 8*4+19*4(r1)
+	lwz	r6, 8*4+20*4(r1)
+	lwz	r7, 8*4+21*4(r1)
+	lwz	r8, 8*4+22*4(r1)
+	lwz	r9, 8*4+23*4(r1)
+	lwz	r10, 8*4+24*4(r1)
+	lwz	r11, 8*4+25*4(r1)
+	stw	r4,  18*4(r17)
+	stw	r5,  19*4(r17)
+	stw	r6,  20*4(r17)
+	stw	r7,  22*4(r17)
+	stw	r8,  23*4(r17)
+	stw	r9,  24*4(r17)
+	stw	r10, 30*4(r17)
+	stw	r11, 31*4(r17)
+	
+	lis	r8, 0x8000
+	li	r9,  0
+	li	r10, 0x0100
+	
+	lwz	r14, 8*4+1*4(r1)
+	lwz	r4, 8*4+0*4(r1)
+	
+	lwz	r11, 8*4+2*4(r1)
+	rotrwi	r12, r14, 7
+	rotrwi	r13, r14, 18
+	
+	stw	r8, 8*4+8*4(r1)
+	stw	r9, 8*4+9*4(r1)
+	stw	r9, 8*4+10*4(r1)
+	stw	r9, 8*4+11*4(r1)
+	stw	r9, 8*4+12*4(r1)
+	stw	r9, 8*4+13*4(r1)
+	stw	r9, 8*4+14*4(r1)
+	stw	r10, 8*4+15*4(r1)
+	
+	xor	r12, r12, r13
+	srwi	r13, r14, 3
+	addis	r5, r14, 0x00a0
+	xor	r12, r12, r13
+	rotrwi	r14, r11, 7
+	rotrwi	r13, r11, 18
+	add	r4, r4, r12
+	xor	r14, r14, r13
+	srwi	r13, r11, 3
+	stw	r4, 8*4+16*4(r1)
+	xor	r14, r14, r13
+	rotrwi	r12, r4, 17
+	rotrwi	r13, r4, 19
+	add	r5, r5, r14
+	lwz	r14, 8*4+3*4(r1)
+	
+	stw	r5, 8*4+17*4(r1)
+	xor	r12, r12, r13
+	srwi	r13, r4, 10
+	rotrwi	r6, r14, 7
+	xor	r12, r12, r13
+	rotrwi	r13, r14, 18
+	xor	r6, r6, r13
+	srwi	r13, r14, 3
+	add	r11, r11, r12
+	xor	r6, r6, r13
+	rotrwi	r12, r5, 17
+	rotrwi	r13, r5, 19
+	add	r6, r6, r11
+	lwz	r11, 8*4+4*4(r1)
+	
+	stw	r6, 8*4+18*4(r1)
+	xor	r12, r12, r13
+	srwi	r13, r5, 10
+	rotrwi	r7, r11, 7
+	xor	r12, r12, r13
+	rotrwi	r13, r11, 18
+	xor	r7, r7, r13
+	srwi	r13, r11, 3
+	add	r14, r14, r12
+	xor	r7, r7, r13
+	rotrwi	r12, r6, 17
+	rotrwi	r13, r6, 19
+	add	r7, r7, r14
+	lwz	r14, 8*4+5*4(r1)
+	
+	stw	r7, 8*4+19*4(r1)
+	xor	r12, r12, r13
+	srwi	r13, r6, 10
+	rotrwi	r8, r14, 7
+	xor	r12, r12, r13
+	rotrwi	r13, r14, 18
+	xor	r8, r8, r13
+	srwi	r13, r14, 3
+	add	r11, r11, r12
+	xor	r8, r8, r13
+	rotrwi	r12, r7, 17
+	rotrwi	r13, r7, 19
+	add	r8, r8, r11
+	lwz	r11, 8*4+6*4(r1)
+	
+	stw	r8, 8*4+20*4(r1)
+	xor	r12, r12, r13
+	srwi	r13, r7, 10
+	rotrwi	r9, r11, 7
+	xor	r12, r12, r13
+	rotrwi	r13, r11, 18
+	xor	r9, r9, r13
+	srwi	r13, r11, 3
+	add	r14, r14, r12
+	xor	r9, r9, r13
+	rotrwi	r12, r8, 17
+	rotrwi	r13, r8, 19
+	add	r9, r9, r14
+	lwz	r14, 8*4+7*4(r1)
+	
+	stw	r9, 8*4+21*4(r1)
+	xor	r12, r12, r13
+	srwi	r13, r8, 10
+	rotrwi	r10, r14, 7
+	xor	r12, r12, r13
+	rotrwi	r13, r14, 18
+	xor	r10, r10, r13
+	srwi	r13, r14, 3
+	add	r11, r11, r12
+	xor	r10, r10, r13
+	rotrwi	r12, r9, 17
+	rotrwi	r13, r9, 19
+	addi	r11, r11, 0x0100
+	add	r14, r14, r4
+	add	r10, r10, r11
+	
+	xor	r12, r12, r13
+	srwi	r13, r9, 10
+	stw	r10, 8*4+22*4(r1)
+	addis	r14, r14, 0x1100
+	xor	r12, r12, r13
+	add	r14, r14, r12
+	rotrwi	r12, r10, 17
+	rotrwi	r13, r10, 19
+	addi	r4, r14, 0x2000
+	xor	r12, r12, r13
+	srwi	r13, r10, 10
+	stw	r4, 8*4+23*4(r1)
+	addis	r5, r5, 0x8000
+	xor	r12, r12, r13
+	add	r5, r5, r12
+
+	rotrwi	r12, r4, 17
+	rotrwi	r13, r4, 19
+	stw	r5, 8*4+24*4(r1)
+	xor	r12, r12, r13
+	srwi	r13, r4, 10
+	rotrwi	r11, r5, 17
+	xor	r12, r12, r13
+	rotrwi	r13, r5, 19
+	xor	r11, r11, r13
+	srwi	r13, r5, 10
+	add	r6, r6, r12
+	xor	r11, r11, r13
+	stw	r6, 8*4+25*4(r1)
+	add	r7, r7, r11
+	
+	rotrwi	r12, r6, 17
+	rotrwi	r13, r6, 19
+	stw	r7, 8*4+26*4(r1)
+	xor	r12, r12, r13
+	srwi	r13, r6, 10
+	rotrwi	r11, r7, 17
+	xor	r12, r12, r13
+	rotrwi	r13, r7, 19
+	xor	r11, r11, r13
+	srwi	r13, r7, 10
+	add	r8, r8, r12
+	xor	r11, r11, r13
+	stw	r8, 8*4+27*4(r1)
+	add	r9, r9, r11
+	
+	rotrwi	r14, r8, 17
+	rotrwi	r13, r8, 19
+	rotrwi	r12, r9, 17
+	stw	r9, 8*4+28*4(r1)
+	addis	r4, r4, 0x0040
+	xor	r14, r14, r13
+	rotrwi	r13, r9, 19
+	xor	r12, r12, r13
+	srwi	r13, r8, 10
+	xor	r14, r14, r13
+	srwi	r13, r9, 10
+	xor	r12, r12, r13
+	addi	r4, r4, 0x0022
+	add	r10, r10, r14
+	add	r4, r4, r12
+	lwz	r11, 8*4+16*4(r1)
+	
+	addi	r5, r5, 0x0100
+	stw	r4, 8*4+30*4(r1)
+	rotrwi	r14, r11, 7
+	stw	r10, 8*4+29*4(r1)
+	rotrwi	r13, r11, 18
+	rotrwi	r12, r10, 17
+	xor	r14, r14, r13
+	rotrwi	r13, r10, 19
+	xor	r12, r12, r13
+	srwi	r13, r11, 3
+	xor	r14, r14, r13
+	srwi	r13, r10, 10
+	xor	r12, r12, r13
+	add	r5, r5, r14
+	add	r5, r5, r12
+	stw	r5, 8*4+31*4(r1)
+	
+	sha256_extend_doubleround 16, r1, 8*4, r6, r7, r4, r5
+	sha256_extend_doubleround 18, r1, 8*4, r8, r9, r6, r7
+	sha256_extend_doubleround 20, r1, 8*4, r10, r4, r8, r9
+	sha256_extend_doubleround 22, r1, 8*4, r5, r6, r10, r4
+	sha256_extend_doubleround 24, r1, 8*4, r7, r8, r5, r6
+	sha256_extend_doubleround 26, r1, 8*4, r9, r10, r7, r8
+	sha256_extend_doubleround 28, r1, 8*4, r4, r5, r9, r10
+	sha256_extend_doubleround 30, r1, 8*4, r6, r7, r4, r5
+	sha256_extend_doubleround 32, r1, 8*4, r8, r9, r6, r7
+	sha256_extend_doubleround 34, r1, 8*4, r10, r4, r8, r9
+	sha256_extend_doubleround 36, r1, 8*4, r5, r6, r10, r4
+	sha256_extend_doubleround 38, r1, 8*4, r7, r8, r5, r6
+	sha256_extend_doubleround 40, r1, 8*4, r9, r10, r7, r8
+	sha256_extend_doubleround 42, r1, 8*4, r4, r5, r9, r10
+	
+	lis	r18, HI(sha256_h)
+	addi	r18, r18, LO(sha256_h)
+	
+	lwz	r14, 8*4+(44+1)*4(r1)
+	rotrwi	r12, r4, 17
+	rotrwi	r13, r4, 19
+	add	r15, r11, r6
+	rotrwi	r6, r14, 7
+	rotrwi	r11, r14, 18
+	xor	r12, r12, r13
+	xor	r6, r6, r11
+	
+	lwz	r8, 4*4(r18)
+	lwz	r9, 5*4(r18)
+	lwz	r10, 6*4(r18)
+	lwz	r11, 7*4(r18)
+	
+	srwi	r13, r4, 10
+	srwi	r14, r14, 3
+	xor	r12, r12, r13
+	xor	r6, r6, r14
+	add	r12, r12, r15
+	add	r6, r6, r12
+	stw	r6, 8*4+(44+16)*4(r1)
+	
+	lwz	r4, 0*4(r18)
+	lwz	r5, 1*4(r18)
+	lwz	r6, 2*4(r18)
+	lwz	r7, 3*4(r18)
+	
+	sha256_main_quadround  0, r16, r1, 8*4
+	sha256_main_quadround  4, r16, r1, 8*4
+	sha256_main_quadround  8, r16, r1, 8*4
+	sha256_main_quadround 12, r16, r1, 8*4
+	sha256_main_quadround 16, r16, r1, 8*4
+	sha256_main_quadround 20, r16, r1, 8*4
+	sha256_main_quadround 24, r16, r1, 8*4
+	sha256_main_quadround 28, r16, r1, 8*4
+	sha256_main_quadround 32, r16, r1, 8*4
+	sha256_main_quadround 36, r16, r1, 8*4
+	sha256_main_quadround 40, r16, r1, 8*4
+	sha256_main_quadround 44, r16, r1, 8*4
+	sha256_main_quadround 48, r16, r1, 8*4
+	sha256_main_quadround 52, r16, r1, 8*4
+	sha256_main_round 56, r16, r1, 8*4, r4, r5, r6, r7, r8, r9, r10, r11
+
+.macro sha256_main_round_red i, rk, rw, wo, rd, re, rf, rg, rh
+	lwz	r12, \wo+(\i)*4(\rw)
+	and	r15, \rf, \re
+	andc	r14, \rg, \re
+	add	\rh, \rh, \rd
+	or	r14, r14, r15
+	lwz	r15, (\i)*4(\rk)
+	rotrwi	r13, \re, 5
+	add	\rh, \rh, r14
+	xor	r14, \re, r13
+	rotrwi	r13, \re, 19
+	add	\rh, \rh, r12
+	xor	r14, r14, r13
+	add	\rh, \rh, r15
+	rotrwi	r13, r14, 6
+	add	\rh, \rh, r13
+.endm
+	
+	sha256_main_round_red 57, r16, r1, 8*4, r6, r11, r8, r9, r10
+	sha256_main_round_red 58, r16, r1, 8*4, r5, r10, r11, r8, r9
+	sha256_main_round_red 59, r16, r1, 8*4, r4, r9, r10, r11, r8
+	lwz	r5, 7*4(r18)
+	sha256_main_round_red 60, r16, r1, 8*4, r7, r8, r9, r10, r11
+	
+	add	r11, r11, r5
+	stw	r11, 7*4(r3)
+	
+	lwz	r13, 2*4(r1)
+	lwz	r14, 3*4(r1)
+	lwz	r15, 4*4(r1)
+	lwz	r16, 5*4(r1)
+	lwz	r17, 6*4(r1)
+	lwz	r18, 7*4(r1)
+	addi	r1, r1, 72*4
+	blr
+
+
+#ifdef __ALTIVEC__
+
+#ifdef __APPLE__
+	.machine ppc7400
+#endif
+
+	.data
+	.align 4
+sha256_4h:
+	.long 0x6a09e667, 0x6a09e667, 0x6a09e667, 0x6a09e667
+	.long 0xbb67ae85, 0xbb67ae85, 0xbb67ae85, 0xbb67ae85
+	.long 0x3c6ef372, 0x3c6ef372, 0x3c6ef372, 0x3c6ef372
+	.long 0xa54ff53a, 0xa54ff53a, 0xa54ff53a, 0xa54ff53a
+	.long 0x510e527f, 0x510e527f, 0x510e527f, 0x510e527f
+	.long 0x9b05688c, 0x9b05688c, 0x9b05688c, 0x9b05688c
+	.long 0x1f83d9ab, 0x1f83d9ab, 0x1f83d9ab, 0x1f83d9ab
+	.long 0x5be0cd19, 0x5be0cd19, 0x5be0cd19, 0x5be0cd19
+
+	.data
+	.align 4
+sha256_4k:
+	.long 0x428a2f98, 0x428a2f98, 0x428a2f98, 0x428a2f98
+	.long 0x71374491, 0x71374491, 0x71374491, 0x71374491
+	.long 0xb5c0fbcf, 0xb5c0fbcf, 0xb5c0fbcf, 0xb5c0fbcf
+	.long 0xe9b5dba5, 0xe9b5dba5, 0xe9b5dba5, 0xe9b5dba5
+	.long 0x3956c25b, 0x3956c25b, 0x3956c25b, 0x3956c25b
+	.long 0x59f111f1, 0x59f111f1, 0x59f111f1, 0x59f111f1
+	.long 0x923f82a4, 0x923f82a4, 0x923f82a4, 0x923f82a4
+	.long 0xab1c5ed5, 0xab1c5ed5, 0xab1c5ed5, 0xab1c5ed5
+	.long 0xd807aa98, 0xd807aa98, 0xd807aa98, 0xd807aa98
+	.long 0x12835b01, 0x12835b01, 0x12835b01, 0x12835b01
+	.long 0x243185be, 0x243185be, 0x243185be, 0x243185be
+	.long 0x550c7dc3, 0x550c7dc3, 0x550c7dc3, 0x550c7dc3
+	.long 0x72be5d74, 0x72be5d74, 0x72be5d74, 0x72be5d74
+	.long 0x80deb1fe, 0x80deb1fe, 0x80deb1fe, 0x80deb1fe
+	.long 0x9bdc06a7, 0x9bdc06a7, 0x9bdc06a7, 0x9bdc06a7
+	.long 0xc19bf174, 0xc19bf174, 0xc19bf174, 0xc19bf174
+	.long 0xe49b69c1, 0xe49b69c1, 0xe49b69c1, 0xe49b69c1
+	.long 0xefbe4786, 0xefbe4786, 0xefbe4786, 0xefbe4786
+	.long 0x0fc19dc6, 0x0fc19dc6, 0x0fc19dc6, 0x0fc19dc6
+	.long 0x240ca1cc, 0x240ca1cc, 0x240ca1cc, 0x240ca1cc
+	.long 0x2de92c6f, 0x2de92c6f, 0x2de92c6f, 0x2de92c6f
+	.long 0x4a7484aa, 0x4a7484aa, 0x4a7484aa, 0x4a7484aa
+	.long 0x5cb0a9dc, 0x5cb0a9dc, 0x5cb0a9dc, 0x5cb0a9dc
+	.long 0x76f988da, 0x76f988da, 0x76f988da, 0x76f988da
+	.long 0x983e5152, 0x983e5152, 0x983e5152, 0x983e5152
+	.long 0xa831c66d, 0xa831c66d, 0xa831c66d, 0xa831c66d
+	.long 0xb00327c8, 0xb00327c8, 0xb00327c8, 0xb00327c8
+	.long 0xbf597fc7, 0xbf597fc7, 0xbf597fc7, 0xbf597fc7
+	.long 0xc6e00bf3, 0xc6e00bf3, 0xc6e00bf3, 0xc6e00bf3
+	.long 0xd5a79147, 0xd5a79147, 0xd5a79147, 0xd5a79147
+	.long 0x06ca6351, 0x06ca6351, 0x06ca6351, 0x06ca6351
+	.long 0x14292967, 0x14292967, 0x14292967, 0x14292967
+	.long 0x27b70a85, 0x27b70a85, 0x27b70a85, 0x27b70a85
+	.long 0x2e1b2138, 0x2e1b2138, 0x2e1b2138, 0x2e1b2138
+	.long 0x4d2c6dfc, 0x4d2c6dfc, 0x4d2c6dfc, 0x4d2c6dfc
+	.long 0x53380d13, 0x53380d13, 0x53380d13, 0x53380d13
+	.long 0x650a7354, 0x650a7354, 0x650a7354, 0x650a7354
+	.long 0x766a0abb, 0x766a0abb, 0x766a0abb, 0x766a0abb
+	.long 0x81c2c92e, 0x81c2c92e, 0x81c2c92e, 0x81c2c92e
+	.long 0x92722c85, 0x92722c85, 0x92722c85, 0x92722c85
+	.long 0xa2bfe8a1, 0xa2bfe8a1, 0xa2bfe8a1, 0xa2bfe8a1
+	.long 0xa81a664b, 0xa81a664b, 0xa81a664b, 0xa81a664b
+	.long 0xc24b8b70, 0xc24b8b70, 0xc24b8b70, 0xc24b8b70
+	.long 0xc76c51a3, 0xc76c51a3, 0xc76c51a3, 0xc76c51a3
+	.long 0xd192e819, 0xd192e819, 0xd192e819, 0xd192e819
+	.long 0xd6990624, 0xd6990624, 0xd6990624, 0xd6990624
+	.long 0xf40e3585, 0xf40e3585, 0xf40e3585, 0xf40e3585
+	.long 0x106aa070, 0x106aa070, 0x106aa070, 0x106aa070
+	.long 0x19a4c116, 0x19a4c116, 0x19a4c116, 0x19a4c116
+	.long 0x1e376c08, 0x1e376c08, 0x1e376c08, 0x1e376c08
+	.long 0x2748774c, 0x2748774c, 0x2748774c, 0x2748774c
+	.long 0x34b0bcb5, 0x34b0bcb5, 0x34b0bcb5, 0x34b0bcb5
+	.long 0x391c0cb3, 0x391c0cb3, 0x391c0cb3, 0x391c0cb3
+	.long 0x4ed8aa4a, 0x4ed8aa4a, 0x4ed8aa4a, 0x4ed8aa4a
+	.long 0x5b9cca4f, 0x5b9cca4f, 0x5b9cca4f, 0x5b9cca4f
+	.long 0x682e6ff3, 0x682e6ff3, 0x682e6ff3, 0x682e6ff3
+	.long 0x748f82ee, 0x748f82ee, 0x748f82ee, 0x748f82ee
+	.long 0x78a5636f, 0x78a5636f, 0x78a5636f, 0x78a5636f
+	.long 0x84c87814, 0x84c87814, 0x84c87814, 0x84c87814
+	.long 0x8cc70208, 0x8cc70208, 0x8cc70208, 0x8cc70208
+	.long 0x90befffa, 0x90befffa, 0x90befffa, 0x90befffa
+	.long 0xa4506ceb, 0xa4506ceb, 0xa4506ceb, 0xa4506ceb
+	.long 0xbef9a3f7, 0xbef9a3f7, 0xbef9a3f7, 0xbef9a3f7
+	.long 0xc67178f2, 0xc67178f2, 0xc67178f2, 0xc67178f2
+
+	.data
+	.align 4
+sha256d_4preext2:
+	.long 0x00a00000, 0x00a00000, 0x00a00000, 0x00a00000
+	.long 0x11002000, 0x11002000, 0x11002000, 0x11002000
+	.long 0x80000000, 0x80000000, 0x80000000, 0x80000000
+	.long 0x00400022, 0x00400022, 0x00400022, 0x00400022
+
+	.data
+	.align 4
+br_perm:
+	.long 0x03020100, 0x07060504, 0x0b0a0908, 0x0f0e0d0c
+
+
+.macro sha256_4way_extend_setup
+	vspltisw	v0, 10
+	vspltisw	v1, -7
+	vspltisw	v16, 3
+	vspltisw	v17, 15
+	vspltisw	v18, 14
+	vspltisw	v19, 13
+.endm
+
+.macro sha256_4way_extend_doubleround i, rw, va, vb, vy, vz
+	lvx	v14, \rw, r7
+	vrlw	v12, \vy, v17
+	vrlw	v13, \vy, v19
+	vadduwm	v11, v11, \va
+	vxor	v12, v12, v13
+	vsrw	v13, \vy, v0
+	vrlw	\va, v14, v1
+	vxor	v12, v12, v13
+	vrlw	v13, v14, v18
+	vadduwm	v12, v12, v11
+	vxor	\va, \va, v13
+	vsrw	v13, v14, v16
+	lvx	v11, \rw, r8
+	vxor	\va, \va, v13
+	vrlw	v13, \vz, v19
+	vadduwm	\va, \va, v12
+
+	vrlw	v12, \vz, v17
+	vadduwm	v14, v14, \vb
+	vxor	v12, v12, v13
+	vsrw	v13, \vz, v0
+	vrlw	\vb, v11, v1
+	vxor	v12, v12, v13
+	vrlw	v13, v11, v18
+	stvx	\va, \rw, r10
+	vxor	\vb, \vb, v13
+	vsrw	v13, v11, v16
+	vadduwm	v14, v14, v12
+	vxor	\vb, \vb, v13
+	vadduwm	\vb, \vb, v14
+	stvx	\vb, \rw, r11
+	addi	\rw, \rw, 2*16
+.endm
+
+
+.macro sha256_4way_main_setup
+	vspltisw	v2, 12
+	vspltisw	v3, -5
+	vspltisw	v16, -6
+	vspltisw	v17, -11
+	vspltisw	v18, -2
+.endm
+
+.macro sha256_4way_main_round i, rk, rw, va, vb, vc, vd, ve, vf, vg, vh
+	li	r6, (\i)*16
+	lvx	v12, \rw, r6
+	vand	v13, \vf, \ve
+	vandc	v14, \vg, \ve
+	lvx	v15, \rk, r6
+	vor	v14, v14, v13
+	vrlw	v13, \ve, v3
+	vadduwm	\vh, \vh, v14
+	vxor	v14, \ve, v13
+	vrlw	v13, \ve, v19
+	vadduwm	\vh, \vh, v12
+	vxor	v14, v14, v13
+	vadduwm	\vh, \vh, v15
+	vrlw	v13, v14, v16
+	vxor	v15, \va, \vb
+	vadduwm	\vh, \vh, v13
+
+	vrlw	v13, \va, v17
+	vand	v15, v15, \vc
+	vxor	v12, \va, v13
+	vrlw	v13, \va, v2
+	vand	v14, \va, \vb
+	vxor	v12, v12, v13
+	vxor	v14, v14, v15
+	vrlw	v13, v12, v18
+	vadduwm	v15, \vh, v14
+	vadduwm	\vh, \vh, \vd
+	vadduwm	\vd, v15, v13
+.endm
+
+.macro sha256_4way_main_quadround i, rk, rw
+	sha256_4way_main_round \i+0, \rk, \rw, v4, v5, v6, v7, v8, v9, v10, v11
+	sha256_4way_main_round \i+1, \rk, \rw, v7, v4, v5, v6, v11, v8, v9, v10
+	sha256_4way_main_round \i+2, \rk, \rw, v6, v7, v4, v5, v10, v11, v8, v9
+	sha256_4way_main_round \i+3, \rk, \rw, v5, v6, v7, v4, v9, v10, v11, v8
+.endm
+
+
+	.text
+	.align 2
+	.globl sha256_init_4way
+	.globl _sha256_init_4way
+#ifdef __ELF__
+	.type sha256_init_4way, %function
+#endif
+sha256_init_4way:
+_sha256_init_4way:
+	mfspr	r0, 256
+	oris	r12, r0, 0xff00
+	mtspr	256, r12
+	
+	lis	r4, HI(sha256_4h)
+	addi	r4, r4, LO(sha256_4h)
+	li	r5, 1*16
+	li	r6, 2*16
+	li	r7, 3*16
+	li	r8, 4*16
+	li	r9, 5*16
+	li	r10, 6*16
+	li	r11, 7*16
+	lvx	v0, 0, r4
+	lvx	v1, r4, r5
+	lvx	v2, r4, r6
+	lvx	v3, r4, r7
+	lvx	v4, r4, r8
+	lvx	v5, r4, r9
+	lvx	v6, r4, r10
+	lvx	v7, r4, r11
+	stvx	v0, 0, r3
+	stvx	v1, r3, r5
+	stvx	v2, r3, r6
+	stvx	v3, r3, r7
+	stvx	v4, r3, r8
+	stvx	v5, r3, r9
+	stvx	v6, r3, r10
+	stvx	v7, r3, r11
+	
+	mtspr	256, r0
+	blr
+
+
+	.text
+	.align 2
+	.globl sha256_transform_4way
+	.globl _sha256_transform_4way
+#ifdef __ELF__
+	.type sha256_transform_4way, %function
+#endif
+sha256_transform_4way:
+_sha256_transform_4way:
+	mfspr	r0, 256
+	oris	r12, r0, 0xffff
+	ori	r12, r12, 0xf000
+	mtspr	256, r12
+	
+	andi.	r6, r1, 15
+	cmpwi	0, r5, 0
+	li	r7, -(4*4+64*16)
+	subf	r6, r6, r7
+	stwux	r1, r1, r6
+
+	li	r7, 1*16
+	li	r8, 2*16
+	li	r9, 3*16
+	li	r10, 4*16
+	li	r11, 5*16
+	li	r12, 6*16
+	li	r6, 7*16
+	
+	bne	0, sha256_transform_4way_swap
+	
+	lvx	v11, 0, r4
+	lvx	v1, r4, r7
+	lvx	v2, r4, r8
+	lvx	v3, r4, r9
+	lvx	v4, r4, r10
+	lvx	v5, r4, r11
+	lvx	v6, r4, r12
+	lvx	v7, r4, r6
+	addi	r5, r1, 4*4
+	stvx	v11, 0, r5
+	stvx	v1, r5, r7
+	stvx	v2, r5, r8
+	stvx	v3, r5, r9
+	stvx	v4, r5, r10
+	stvx	v5, r5, r11
+	stvx	v6, r5, r12
+	stvx	v7, r5, r6
+	addi	r4, r4, 8*16
+	lvx	v0, 0, r4
+	lvx	v4, r4, r7
+	lvx	v5, r4, r8
+	lvx	v6, r4, r9
+	lvx	v7, r4, r10
+	lvx	v8, r4, r11
+	lvx	v9, r4, r12
+	lvx	v10, r4, r6
+	addi	r4, r1, 4*4+8*16
+	stvx	v0, 0, r4
+	stvx	v4, r4, r7
+	stvx	v5, r4, r8
+	stvx	v6, r4, r9
+	stvx	v7, r4, r10
+	stvx	v8, r4, r11
+	stvx	v9, r4, r12
+	stvx	v10, r4, r6
+	b	sha256_transform_4way_extend
+
+sha256_transform_4way_swap:
+	lis	r5, HI(br_perm)
+	addi	r5, r5, LO(br_perm)
+	lvx	v19, 0, r5
+	
+	lvx	v11, 0, r4
+	lvx	v1, r4, r7
+	lvx	v2, r4, r8
+	lvx	v3, r4, r9
+	lvx	v4, r4, r10
+	lvx	v5, r4, r11
+	lvx	v6, r4, r12
+	lvx	v7, r4, r6
+	vperm	v11, v11, v11, v19
+	vperm	v1, v1, v1, v19
+	vperm	v2, v2, v2, v19
+	vperm	v3, v3, v3, v19
+	vperm	v4, v4, v4, v19
+	vperm	v5, v5, v5, v19
+	vperm	v6, v6, v6, v19
+	vperm	v7, v7, v7, v19
+	addi	r5, r1, 4*4
+	stvx	v11, 0, r5
+	stvx	v1, r5, r7
+	stvx	v2, r5, r8
+	stvx	v3, r5, r9
+	stvx	v4, r5, r10
+	stvx	v5, r5, r11
+	stvx	v6, r5, r12
+	stvx	v7, r5, r6
+	addi	r4, r4, 8*16
+	lvx	v0, 0, r4
+	lvx	v4, r4, r7
+	lvx	v5, r4, r8
+	lvx	v6, r4, r9
+	lvx	v7, r4, r10
+	lvx	v8, r4, r11
+	lvx	v9, r4, r12
+	lvx	v10, r4, r6
+	vperm	v0, v0, v0, v19
+	vperm	v4, v4, v4, v19
+	vperm	v5, v5, v5, v19
+	vperm	v6, v6, v6, v19
+	vperm	v7, v7, v7, v19
+	vperm	v8, v8, v8, v19
+	vperm	v9, v9, v9, v19
+	vperm	v10, v10, v10, v19
+	addi	r4, r1, 4*4+8*16
+	stvx	v0, 0, r4
+	stvx	v4, r4, r7
+	stvx	v5, r4, r8
+	stvx	v6, r4, r9
+	stvx	v7, r4, r10
+	stvx	v8, r4, r11
+	stvx	v9, r4, r12
+	stvx	v10, r4, r6
+	
+sha256_transform_4way_extend:
+	li	r10, 16*16
+	li	r11, 17*16
+	sha256_4way_extend_setup
+	sha256_4way_extend_doubleround  0, r5, v4, v5, v9, v10
+	sha256_4way_extend_doubleround  2, r5, v6, v7, v4, v5
+	sha256_4way_extend_doubleround  4, r5, v8, v9, v6, v7
+	sha256_4way_extend_doubleround  6, r5, v10, v4, v8, v9
+	sha256_4way_extend_doubleround  8, r5, v5, v6, v10, v4
+	sha256_4way_extend_doubleround 10, r5, v7, v8, v5, v6
+	sha256_4way_extend_doubleround 12, r5, v9, v10, v7, v8
+	sha256_4way_extend_doubleround 14, r5, v4, v5, v9, v10
+	sha256_4way_extend_doubleround 16, r5, v6, v7, v4, v5
+	sha256_4way_extend_doubleround 18, r5, v8, v9, v6, v7
+	sha256_4way_extend_doubleround 20, r5, v10, v4, v8, v9
+	sha256_4way_extend_doubleround 22, r5, v5, v6, v10, v4
+	sha256_4way_extend_doubleround 24, r5, v7, v8, v5, v6
+	sha256_4way_extend_doubleround 26, r5, v9, v10, v7, v8
+	sha256_4way_extend_doubleround 28, r5, v4, v5, v9, v10
+	sha256_4way_extend_doubleround 30, r5, v6, v7, v4, v5
+	sha256_4way_extend_doubleround 32, r5, v8, v9, v6, v7
+	sha256_4way_extend_doubleround 34, r5, v10, v4, v8, v9
+	sha256_4way_extend_doubleround 36, r5, v5, v6, v10, v4
+	sha256_4way_extend_doubleround 38, r5, v7, v8, v5, v6
+	sha256_4way_extend_doubleround 40, r5, v9, v10, v7, v8
+	sha256_4way_extend_doubleround 42, r5, v4, v5, v9, v10
+	sha256_4way_extend_doubleround 44, r5, v6, v7, v4, v5
+	sha256_4way_extend_doubleround 46, r5, v8, v9, v6, v7
+	
+	addi	r11, r3, 4*16
+	lvx	v4, 0, r3
+	lvx	v5, r3, r7
+	lvx	v6, r3, r8
+	lvx	v7, r3, r9
+	lvx	v8, 0, r11
+	lvx	v9, r11, r7
+	lvx	v10, r11, r8
+	lvx	v11, r11, r9
+	lis	r12, HI(sha256_4k)
+	addi	r12, r12, LO(sha256_4k)
+	addi	r5, r1, 4*4
+	sha256_4way_main_setup
+	sha256_4way_main_quadround  0, r12, r5
+	sha256_4way_main_quadround  4, r12, r5
+	sha256_4way_main_quadround  8, r12, r5
+	sha256_4way_main_quadround 12, r12, r5
+	sha256_4way_main_quadround 16, r12, r5
+	sha256_4way_main_quadround 20, r12, r5
+	sha256_4way_main_quadround 24, r12, r5
+	sha256_4way_main_quadround 28, r12, r5
+	sha256_4way_main_quadround 32, r12, r5
+	sha256_4way_main_quadround 36, r12, r5
+	sha256_4way_main_quadround 40, r12, r5
+	sha256_4way_main_quadround 44, r12, r5
+	sha256_4way_main_quadround 48, r12, r5
+	sha256_4way_main_quadround 52, r12, r5
+	sha256_4way_main_quadround 56, r12, r5
+	sha256_4way_main_quadround 60, r12, r5
+	
+	lvx	v12, 0, r3
+	lvx	v13, r3, r7
+	lvx	v14, r3, r8
+	lvx	v15, r3, r9
+	lvx	v16, 0, r11
+	lvx	v17, r11, r7
+	lvx	v18, r11, r8
+	lvx	v19, r11, r9
+	vadduwm	v4, v4, v12
+	vadduwm	v5, v5, v13
+	vadduwm	v6, v6, v14
+	vadduwm	v7, v7, v15
+	vadduwm	v8, v8, v16
+	vadduwm	v9, v9, v17
+	vadduwm	v10, v10, v18
+	vadduwm	v11, v11, v19
+	stvx	v4, 0, r3
+	stvx	v5, r3, r7
+	stvx	v6, r3, r8
+	stvx	v7, r3, r9
+	stvx	v8, 0, r11
+	stvx	v9, r11, r7
+	stvx	v10, r11, r8
+	stvx	v11, r11, r9
+	
+	lwz	r1, 0(r1)
+	mtspr	256, r0
+	blr
+
+
+	.text
+	.align 2
+	.globl sha256d_ms_4way
+	.globl _sha256d_ms_4way
+#ifdef __ELF__
+	.type sha256d_ms_4way, %function
+#endif
+sha256d_ms_4way:
+_sha256d_ms_4way:
+	mfspr	r0, 256
+	oris	r12, r0, 0xffff
+	ori	r12, r12, 0xf000
+	mtspr	256, r12
+	
+	andi.	r12, r1, 15
+	li	r11, -(4*4+64*16)
+	subf	r12, r12, r11
+	stwux	r1, r1, r12
+	
+	li	r7, 1*16
+	li	r8, 2*16
+	li	r9, 3*16
+	li	r10, 16*16
+	li	r11, 17*16
+	
+	sha256_4way_extend_setup
+	
+	addi	r4, r4, 2*16
+	addi	r12, r1, 4*4+18*16
+	lvx	v14, r4, r7
+	lvx	v6, r4, r10
+	lvx	v7, r4, r11
+	
+	vrlw	v12, v14, v1
+	vrlw	v13, v14, v18
+	stvx	v6, 0, r12
+	vxor	v12, v12, v13
+	vsrw	v13, v14, v16
+	stvx	v7, r12, r7
+	vxor	v12, v12, v13
+	vadduwm	v6, v6, v12
+	vadduwm	v7, v7, v14
+	stvx	v6, r4, r10
+	
+	vrlw	v12, v6, v17
+	vrlw	v13, v6, v19
+	stvx	v7, r4, r11
+	addi	r4, r4, 18*16
+	lvx	v8, 0, r4
+	vxor	v12, v12, v13
+	vsrw	v13, v6, v0
+	stvx	v8, r12, r8
+	vxor	v12, v12, v13
+	vadduwm	v8, v8, v12
+	
+	vrlw	v9, v7, v17
+	vrlw	v13, v7, v19
+	stvx	v8, 0, r4
+	vxor	v9, v9, v13
+	vsrw	v13, v7, v0
+	vxor	v9, v9, v13
+	
+	vrlw	v12, v8, v17
+	vrlw	v13, v8, v19
+	stvx	v9, r4, r7
+	vxor	v12, v12, v13
+	vsrw	v13, v8, v0
+	lvx	v10, r4, r8
+	lvx	v4, r4, r9
+	vxor	v12, v12, v13
+	stvx	v10, r12, r9
+	addi	r12, r12, 4*16
+	stvx	v4, 0, r12
+	vrlw	v14, v9, v17
+	vrlw	v13, v9, v19
+	vadduwm	v10, v10, v12
+	
+	vxor	v14, v14, v13
+	vsrw	v13, v9, v0
+	stvx	v10, r4, r8
+	vxor	v14, v14, v13
+	vadduwm	v4, v4, v14
+	
+	vrlw	v12, v10, v17
+	vrlw	v13, v10, v19
+	stvx	v4, r4, r9
+	vxor	v12, v12, v13
+	vsrw	v13, v10, v0
+	vrlw	v14, v4, v17
+	vxor	v12, v12, v13
+	vrlw	v13, v4, v19
+	addi	r4, r4, 4*16
+	lvx	v5, 0, r4
+	vxor	v14, v14, v13
+	stvx	v5, r12, r7
+	vsrw	v13, v4, v0
+	vadduwm	v5, v5, v12
+	vxor	v14, v14, v13
+	stvx	v5, 0, r4
+	vadduwm	v6, v6, v14
+	
+	vrlw	v12, v5, v17
+	vrlw	v13, v5, v19
+	stvx	v6, r4, r7
+	vxor	v12, v12, v13
+	vsrw	v13, v5, v0
+	vrlw	v14, v6, v17
+	vxor	v12, v12, v13
+	vrlw	v13, v6, v19
+	vxor	v14, v14, v13
+	vsrw	v13, v6, v0
+	vadduwm	v7, v7, v12
+	vxor	v14, v14, v13
+	stvx	v7, r4, r8
+	vadduwm	v8, v8, v14
+	
+	vrlw	v12, v7, v17
+	vrlw	v13, v7, v19
+	stvx	v8, r4, r9
+	vxor	v12, v12, v13
+	vsrw	v13, v7, v0
+	vrlw	v14, v8, v17
+	vxor	v12, v12, v13
+	vrlw	v13, v8, v19
+	vxor	v14, v14, v13
+	vsrw	v13, v8, v0
+	vadduwm	v9, v9, v12
+	vxor	v14, v14, v13
+	addi	r4, r4, 4*16
+	stvx	v9, 0, r4
+	vadduwm	v10, v10, v14
+	
+	vrlw	v12, v9, v17
+	vrlw	v13, v9, v19
+	stvx	v10, r4, r7
+	vxor	v12, v12, v13
+	vsrw	v13, v9, v0
+	lvx	v11, r4, r8
+	lvx	v14, r4, r9
+	stvx	v11, r12, r8
+	stvx	v14, r12, r9
+	vxor	v12, v12, v13
+	vadduwm	v11, v11, v12
+	vadduwm	v5, v5, v14
+	vrlw	v12, v10, v17
+	vrlw	v13, v10, v19
+	vadduwm	v4, v4, v11
+	
+	vxor	v12, v12, v13
+	vsrw	v13, v10, v0
+	stvx	v4, r4, r8
+	vxor	v12, v12, v13
+	vadduwm	v5, v5, v12
+	stvx	v5, r4, r9
+	addi	r4, r4, -12*16
+	lvx	v11, 0, r4
+	
+	sha256_4way_extend_doubleround 16, r4, v6, v7, v4, v5
+	sha256_4way_extend_doubleround 18, r4, v8, v9, v6, v7
+	sha256_4way_extend_doubleround 20, r4, v10, v4, v8, v9
+	sha256_4way_extend_doubleround 22, r4, v5, v6, v10, v4
+	sha256_4way_extend_doubleround 24, r4, v7, v8, v5, v6
+	sha256_4way_extend_doubleround 26, r4, v9, v10, v7, v8
+	sha256_4way_extend_doubleround 28, r4, v4, v5, v9, v10
+	sha256_4way_extend_doubleround 30, r4, v6, v7, v4, v5
+	sha256_4way_extend_doubleround 32, r4, v8, v9, v6, v7
+	sha256_4way_extend_doubleround 34, r4, v10, v4, v8, v9
+	sha256_4way_extend_doubleround 36, r4, v5, v6, v10, v4
+	sha256_4way_extend_doubleround 38, r4, v7, v8, v5, v6
+	sha256_4way_extend_doubleround 40, r4, v9, v10, v7, v8
+	sha256_4way_extend_doubleround 42, r4, v4, v5, v9, v10
+	sha256_4way_extend_doubleround 44, r4, v6, v7, v4, v5
+	sha256_4way_extend_doubleround 46, r4, v8, v9, v6, v7
+	addi	r4, r4, -48*16
+	
+	lvx	v4, 0, r6
+	lvx	v9, r6, r7
+	lvx	v10, r6, r8
+	lvx	v11, r6, r9
+	addi	r12, r6, 4*16
+	lvx	v8, 0, r12
+	lvx	v5, r12, r7
+	lvx	v6, r12, r8
+	lvx	v7, r12, r9
+	lis	r12, HI(sha256_4k)
+	addi	r12, r12, LO(sha256_4k)
+	sha256_4way_main_setup
+	sha256_4way_main_round  3, r12, r4, v5, v6, v7, v4, v9, v10, v11, v8
+	sha256_4way_main_quadround  4, r12, r4
+	sha256_4way_main_quadround  8, r12, r4
+	sha256_4way_main_quadround 12, r12, r4
+	sha256_4way_main_quadround 16, r12, r4
+	sha256_4way_main_quadround 20, r12, r4
+	sha256_4way_main_quadround 24, r12, r4
+	sha256_4way_main_quadround 28, r12, r4
+	sha256_4way_main_quadround 32, r12, r4
+	sha256_4way_main_quadround 36, r12, r4
+	sha256_4way_main_quadround 40, r12, r4
+	sha256_4way_main_quadround 44, r12, r4
+	sha256_4way_main_quadround 48, r12, r4
+	sha256_4way_main_quadround 52, r12, r4
+	sha256_4way_main_quadround 56, r12, r4
+	sha256_4way_main_quadround 60, r12, r4
+	
+	lvx	v12, 0, r5
+	lvx	v13, r5, r7
+	lvx	v14, r5, r8
+	lvx	v15, r5, r9
+	addi	r12, r5, 4*16
+	lvx	v16, 0, r12
+	lvx	v17, r12, r7
+	lvx	v18, r12, r8
+	lvx	v19, r12, r9
+	vadduwm	v4, v4, v12
+	vadduwm	v5, v5, v13
+	vadduwm	v6, v6, v14
+	vadduwm	v7, v7, v15
+	vadduwm	v8, v8, v16
+	vadduwm	v9, v9, v17
+	vadduwm	v10, v10, v18
+	vadduwm	v11, v11, v19
+	addi	r12, r1, 4*4
+	stvx	v4, 0, r12
+	stvx	v5, r12, r7
+	stvx	v6, r12, r8
+	stvx	v7, r12, r9
+	addi	r12, r12, 4*16
+	stvx	v8, 0, r12
+	stvx	v9, r12, r7
+	stvx	v10, r12, r8
+	stvx	v11, r12, r9
+	
+	addi	r12, r1, 4*4+18*16
+	lvx	v4, 0, r12
+	lvx	v5, r12, r7
+	lvx	v6, r12, r8
+	lvx	v7, r12, r9
+	addi	r12, r12, 4*16
+	lvx	v8, 0, r12
+	lvx	v9, r12, r7
+	lvx	v10, r12, r8
+	lvx	v11, r12, r9
+	addi	r12, r4, 18*16
+	stvx	v4, 0, r12
+	stvx	v5, r12, r7
+	stvx	v6, r12, r8
+	addi	r12, r4, 22*16
+	stvx	v7, 0, r12
+	stvx	v8, r12, r7
+	stvx	v9, r12, r8
+	addi	r12, r4, 30*16
+	stvx	v10, 0, r12
+	stvx	v11, r12, r7
+	
+	addi	r4, r1, 4*4
+	
+	sha256_4way_extend_setup
+	
+	lis	r12, HI(sha256d_4preext2)
+	addi	r12, r12, LO(sha256d_4preext2)
+	lvx	v2, 0, r12
+	
+	vxor	v9, v9, v9
+	vspltisw	v3, 1
+	lvx	v4, r12, r8
+	vsldoi	v3, v3, v3, 1
+	addi	r5, r1, 4*4+8*16
+	stvx	v4, 0, r5
+	stvx	v9, r5, r7
+	stvx	v9, r5, r8
+	stvx	v9, r5, r9
+	addi	r5, r5, 4*16
+	stvx	v9, 0, r5
+	stvx	v9, r5, r7
+	stvx	v9, r5, r8
+	stvx	v3, r5, r9
+	
+	lvx	v4, 0, r4
+	lvx	v14, r4, r7
+	
+	lvx	v11, r4, r8
+	vrlw	v12, v14, v1
+	vrlw	v13, v14, v18
+	
+	vxor	v12, v12, v13
+	vsrw	v13, v14, v16
+	vadduwm	v5, v14, v2
+	vxor	v12, v12, v13
+	vrlw	v14, v11, v1
+	vrlw	v13, v11, v18
+	vadduwm	v4, v4, v12
+	vxor	v14, v14, v13
+	vsrw	v13, v11, v16
+	stvx	v4, r4, r10
+	vxor	v14, v14, v13
+	vrlw	v12, v4, v17
+	vrlw	v13, v4, v19
+	vadduwm	v5, v5, v14
+	
+	stvx	v5, r4, r11
+	addi	r4, r4, 2*16
+	lvx	v14, r4, r7
+	vxor	v12, v12, v13
+	vsrw	v13, v4, v0
+	vrlw	v6, v14, v1
+	vxor	v12, v12, v13
+	vrlw	v13, v14, v18
+	vxor	v6, v6, v13
+	vsrw	v13, v14, v16
+	vadduwm	v11, v11, v12
+	vxor	v6, v6, v13
+	vrlw	v12, v5, v17
+	vrlw	v13, v5, v19
+	vadduwm	v6, v6, v11
+	lvx	v11, r4, r8
+	
+	stvx	v6, r4, r10
+	vxor	v12, v12, v13
+	vsrw	v13, v5, v0
+	vrlw	v7, v11, v1
+	vxor	v12, v12, v13
+	vrlw	v13, v11, v18
+	vxor	v7, v7, v13
+	vsrw	v13, v11, v16
+	vadduwm	v14, v14, v12
+	vxor	v7, v7, v13
+	vrlw	v12, v6, v17
+	vrlw	v13, v6, v19
+	vadduwm	v7, v7, v14
+	
+	stvx	v7, r4, r11
+	addi	r4, r4, 2*16
+	lvx	v14, r4, r7
+	vxor	v12, v12, v13
+	vsrw	v13, v6, v0
+	vrlw	v8, v14, v1
+	vxor	v12, v12, v13
+	vrlw	v13, v14, v18
+	vxor	v8, v8, v13
+	vsrw	v13, v14, v16
+	vadduwm	v11, v11, v12
+	vxor	v8, v8, v13
+	vrlw	v12, v7, v17
+	vrlw	v13, v7, v19
+	vadduwm	v8, v8, v11
+	lvx	v11, r4, r8
+	
+	stvx	v8, r4, r10
+	vxor	v12, v12, v13
+	vsrw	v13, v7, v0
+	vrlw	v9, v11, v1
+	vxor	v12, v12, v13
+	vrlw	v13, v11, v18
+	vxor	v9, v9, v13
+	vsrw	v13, v11, v16
+	vadduwm	v14, v14, v12
+	vxor	v9, v9, v13
+	vrlw	v12, v8, v17
+	vrlw	v13, v8, v19
+	vadduwm	v9, v9, v14
+	
+	stvx	v9, r4, r11
+	addi	r4, r4, 2*16
+	lvx	v14, r4, r7
+	vxor	v12, v12, v13
+	vsrw	v13, v8, v0
+	vrlw	v10, v14, v1
+	vxor	v12, v12, v13
+	vrlw	v13, v14, v18
+	vxor	v10, v10, v13
+	vsrw	v13, v14, v16
+	vadduwm	v11, v11, v12
+	vxor	v10, v10, v13
+	vrlw	v12, v9, v17
+	vrlw	v13, v9, v19
+	vadduwm	v11, v11, v3
+	vadduwm	v14, v14, v4
+	vadduwm	v10, v10, v11
+	
+	lvx	v2, r12, r7
+	vxor	v12, v12, v13
+	vsrw	v13, v9, v0
+	stvx	v10, r4, r10
+	vxor	v12, v12, v13
+	vadduwm	v14, v14, v12
+	vrlw	v12, v10, v17
+	vrlw	v13, v10, v19
+	vadduwm	v4, v14, v2
+	lvx	v2, r12, r8
+	vxor	v12, v12, v13
+	vsrw	v13, v10, v0
+	stvx	v4, r4, r11
+	vadduwm	v5, v5, v2
+	vxor	v12, v12, v13
+	vadduwm	v5, v5, v12
+
+	vrlw	v12, v4, v17
+	vrlw	v13, v4, v19
+	addi	r4, r4, 2*16
+	stvx	v5, r4, r10
+	vxor	v12, v12, v13
+	vsrw	v13, v4, v0
+	vrlw	v11, v5, v17
+	vxor	v12, v12, v13
+	vrlw	v13, v5, v19
+	vxor	v11, v11, v13
+	vsrw	v13, v5, v0
+	vadduwm	v6, v6, v12
+	vxor	v11, v11, v13
+	stvx	v6, r4, r11
+	vadduwm	v7, v7, v11
+	
+	vrlw	v12, v6, v17
+	vrlw	v13, v6, v19
+	addi	r4, r4, 2*16
+	stvx	v7, r4, r10
+	vxor	v12, v12, v13
+	vsrw	v13, v6, v0
+	vrlw	v11, v7, v17
+	vxor	v12, v12, v13
+	vrlw	v13, v7, v19
+	vxor	v11, v11, v13
+	vsrw	v13, v7, v0
+	vadduwm	v8, v8, v12
+	vxor	v11, v11, v13
+	stvx	v8, r4, r11
+	vadduwm	v9, v9, v11
+	
+	lvx	v2, r12, r9
+	vrlw	v14, v8, v17
+	vrlw	v13, v8, v19
+	vrlw	v12, v9, v17
+	addi	r4, r4, 2*16
+	stvx	v9, r4, r10
+	vxor	v14, v14, v13
+	vrlw	v13, v9, v19
+	vxor	v12, v12, v13
+	vsrw	v13, v8, v0
+	vxor	v14, v14, v13
+	vsrw	v13, v9, v0
+	vxor	v12, v12, v13
+	vadduwm	v4, v4, v2
+	vadduwm	v10, v10, v14
+	vadduwm	v4, v4, v12
+	stvx	v10, r4, r11
+	addi	r4, r4, 2*16
+	lvx	v11, r4, r8
+	
+	vadduwm	v5, v5, v3
+	stvx	v4, r4, r10
+	vrlw	v14, v11, v1
+	vrlw	v13, v11, v18
+	vrlw	v12, v10, v17
+	vxor	v14, v14, v13
+	vrlw	v13, v10, v19
+	vxor	v12, v12, v13
+	vsrw	v13, v11, v16
+	vxor	v14, v14, v13
+	vsrw	v13, v10, v0
+	vxor	v12, v12, v13
+	vadduwm	v5, v5, v14
+	vadduwm	v5, v5, v12
+	stvx	v5, r4, r11
+	addi	r4, r4, 2*16
+	
+	sha256_4way_extend_doubleround 16, r4, v6, v7, v4, v5
+	sha256_4way_extend_doubleround 18, r4, v8, v9, v6, v7
+	sha256_4way_extend_doubleround 20, r4, v10, v4, v8, v9
+	sha256_4way_extend_doubleround 22, r4, v5, v6, v10, v4
+	sha256_4way_extend_doubleround 24, r4, v7, v8, v5, v6
+	sha256_4way_extend_doubleround 26, r4, v9, v10, v7, v8
+	sha256_4way_extend_doubleround 28, r4, v4, v5, v9, v10
+	sha256_4way_extend_doubleround 30, r4, v6, v7, v4, v5
+	sha256_4way_extend_doubleround 32, r4, v8, v9, v6, v7
+	sha256_4way_extend_doubleround 34, r4, v10, v4, v8, v9
+	sha256_4way_extend_doubleround 36, r4, v5, v6, v10, v4
+	sha256_4way_extend_doubleround 38, r4, v7, v8, v5, v6
+	sha256_4way_extend_doubleround 40, r4, v9, v10, v7, v8
+	sha256_4way_extend_doubleround 42, r4, v4, v5, v9, v10
+	
+	lvx	v14, r4, r7
+	vrlw	v12, v4, v17
+	vrlw	v13, v4, v19
+	vadduwm	v15, v11, v6
+	vrlw	v6, v14, v1
+	vrlw	v11, v14, v18
+	vxor	v12, v12, v13
+	vxor	v6, v6, v11
+	vsrw	v13, v4, v0
+	vsrw	v14, v14, v16
+	vxor	v12, v12, v13
+	vxor	v6, v6, v14
+	vadduwm	v12, v12, v15
+	vadduwm	v6, v6, v12
+	stvx	v6, r4, r10
+	addi	r4, r4, -44*16
+	
+	lis	r5, HI(sha256_4h)
+	addi	r5, r5, LO(sha256_4h)
+	lvx	v4, 0, r5
+	lvx	v5, r5, r7
+	lvx	v6, r5, r8
+	lvx	v7, r5, r9
+	addi	r12, r5, 4*16
+	lvx	v8, 0, r12
+	lvx	v9, r12, r7
+	lvx	v10, r12, r8
+	lvx	v11, r12, r9
+	lis	r12, HI(sha256_4k)
+	addi	r12, r12, LO(sha256_4k)
+	sha256_4way_main_setup
+	sha256_4way_main_quadround  0, r12, r4
+	sha256_4way_main_quadround  4, r12, r4
+	sha256_4way_main_quadround  8, r12, r4
+	sha256_4way_main_quadround 12, r12, r4
+	sha256_4way_main_quadround 16, r12, r4
+	sha256_4way_main_quadround 20, r12, r4
+	sha256_4way_main_quadround 24, r12, r4
+	sha256_4way_main_quadround 28, r12, r4
+	sha256_4way_main_quadround 32, r12, r4
+	sha256_4way_main_quadround 36, r12, r4
+	sha256_4way_main_quadround 40, r12, r4
+	sha256_4way_main_quadround 44, r12, r4
+	sha256_4way_main_quadround 48, r12, r4
+	sha256_4way_main_quadround 52, r12, r4
+	sha256_4way_main_round 56, r12, r4, v4, v5, v6, v7, v8, v9, v10, v11
+
+.macro sha256_4way_main_round_red i, rk, rw, vd, ve, vf, vg, vh
+	li	r6, (\i)*16
+	vand	v15, \vf, \ve
+	vandc	v14, \vg, \ve
+	lvx	v12, \rw, r6
+	vadduwm	\vh, \vh, \vd
+	vor	v14, v14, v15
+	lvx	v15, \rk, r6
+	vrlw	v13, \ve, v3
+	vadduwm	\vh, \vh, v14
+	vxor	v14, \ve, v13
+	vrlw	v13, \ve, v19
+	vadduwm	\vh, \vh, v12
+	vxor	v14, v14, v13
+	vadduwm	\vh, \vh, v15
+	vrlw	v13, v14, v16
+	vadduwm	\vh, \vh, v13
+.endm
+
+	sha256_4way_main_round_red 57, r12, r4, v6, v11, v8, v9, v10
+	sha256_4way_main_round_red 58, r12, r4, v5, v10, v11, v8, v9
+	sha256_4way_main_round_red 59, r12, r4, v4, v9, v10, v11, v8
+	sha256_4way_main_round_red 60, r12, r4, v7, v8, v9, v10, v11
+	
+	li	r12, 7*16
+	lvx	v19, r5, r12
+	vadduwm	v11, v11, v19
+	stvx	v11, r3, r12
+	
+	lwz	r1, 0(r1)
+	mtspr	256, r0
+	blr
+
+
+	.text
+	.align 2
+	.globl sha256_use_4way
+	.globl _sha256_use_4way
+#ifdef __ELF__
+	.type sha256_use_4way, %function
+#endif
+sha256_use_4way:
+_sha256_use_4way:
+	li	r3, 1
+	blr
+
+#endif /* __ALTIVEC__ */
+
+#endif
diff --git a/sha2.c b/sha2.c
index 367efda..4bd86d2 100644
--- a/sha2.c
+++ b/sha2.c
@@ -14,7 +14,9 @@
 #include <string.h>
 #include <inttypes.h>
 
-#if defined(USE_ASM) && defined(__arm__) && defined(__APCS_32__)
+#if defined(USE_ASM) && \
+	((defined(__arm__) && defined(__APCS_32__)) || \
+	 (defined(__powerpc__) || defined(__ppc__) || defined(__PPC__)))
 #define EXTERN_SHA256
 #endif