From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001
From: Duncan Wilkie <antigravityd@gmail.com>
Date: Sat, 18 Nov 2023 06:11:09 -0600
Subject: Initial commit.

---
 gmp-6.3.0/mpn/powerpc64/p7/hamdist.asm | 110 +++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/powerpc64/p7/hamdist.asm

(limited to 'gmp-6.3.0/mpn/powerpc64/p7/hamdist.asm')

diff --git a/gmp-6.3.0/mpn/powerpc64/p7/hamdist.asm b/gmp-6.3.0/mpn/powerpc64/p7/hamdist.asm
new file mode 100644
index 0000000..960b3bc
--- /dev/null
+++ b/gmp-6.3.0/mpn/powerpc64/p7/hamdist.asm
@@ -0,0 +1,110 @@
+dnl  PowerPC-64 mpn_hamdist.
+
+dnl  Copyright 2012, 2017 Free Software Foundation, Inc.
+
+dnl  This file is part of the GNU MP Library.
+dnl
+dnl  The GNU MP Library is free software; you can redistribute it and/or modify
+dnl  it under the terms of either:
+dnl
+dnl    * the GNU Lesser General Public License as published by the Free
+dnl      Software Foundation; either version 3 of the License, or (at your
+dnl      option) any later version.
+dnl
+dnl  or
+dnl
+dnl    * the GNU General Public License as published by the Free Software
+dnl      Foundation; either version 2 of the License, or (at your option) any
+dnl      later version.
+dnl
+dnl  or both in parallel, as here.
+dnl
+dnl  The GNU MP Library is distributed in the hope that it will be useful, but
+dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+dnl  for more details.
+dnl
+dnl  You should have received copies of the GNU General Public License and the
+dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
+dnl  see https://www.gnu.org/licenses/.
+
+include(`../config.m4')
+
+C                   cycles/limb
+C POWER3/PPC630          -
+C POWER4/PPC970          -
+C POWER5                 -
+C POWER6                 -
+C POWER7                 2.87
+
+define(`up', r3)
+define(`vp', r4)
+define(`n',  r5)
+
+ASM_START()
+PROLOGUE(mpn_hamdist)
+	std	r30, -16(r1)
+	std	r31, -8(r1)
+
+	addi	r0, n, 1
+ifdef(`HAVE_ABI_mode32',
+`	rldicl	r0, r0, 63,33',	C ...branch count
+`	srdi	r0, r0, 1')	C ...for ctr
+	mtctr	r0
+
+	andi.	r0, n, 1
+
+	li	r0, 0
+	li	r12, 0
+
+	beq	L(evn)
+
+L(odd):	ld	r6, 0(up)
+	addi	up, up, 8
+	ld	r8, 0(vp)
+	addi	vp, vp, 8
+	xor	r10, r6, r8
+	popcntd(r0, r10)
+	bdz	L(e1)
+
+L(evn):	ld	r6, 0(up)
+	ld	r8, 0(vp)
+	ld	r7, 8(up)
+	ld	r9, 8(vp)
+	xor	r10, r6, r8
+	addi	up, up, 16
+	addi	vp, vp, 16
+	li	r30, 0
+	li	r31, 0
+	bdz	L(end)
+
+	nop
+	nop
+C	ALIGN(16)
+L(top):	add	r0, r0, r30
+	ld	r6, 0(up)
+	ld	r8, 0(vp)
+	xor	r11, r7, r9
+	popcntd(r30, r10)
+	add	r12, r12, r31
+	ld	r7, 8(up)
+	ld	r9, 8(vp)
+	xor	r10, r6, r8
+	popcntd(r31, r11)
+	addi	up, up, 16
+	addi	vp, vp, 16
+	bdnz	L(top)
+
+L(end):	add	r0, r0, r30
+	xor	r11, r7, r9
+	popcntd(r30, r10)
+	add	r12, r12, r31
+	popcntd(r31, r11)
+
+	add	r0, r0, r30
+	add	r12, r12, r31
+L(e1):	add	r3, r0, r12
+	ld	r30, -16(r1)
+	ld	r31, -8(r1)
+	blr
+EPILOGUE()
-- 
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