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/arm/v5/gcd_11.asm | 70 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/arm/v5/gcd_11.asm

(limited to 'gmp-6.3.0/mpn/arm/v5/gcd_11.asm')

diff --git a/gmp-6.3.0/mpn/arm/v5/gcd_11.asm b/gmp-6.3.0/mpn/arm/v5/gcd_11.asm
new file mode 100644
index 0000000..3c2b48f
--- /dev/null
+++ b/gmp-6.3.0/mpn/arm/v5/gcd_11.asm
@@ -0,0 +1,70 @@
+dnl  ARM v5 mpn_gcd_11.
+
+dnl  Based on the K7 gcd_1.asm, by Kevin Ryde.  Rehacked for ARM by Torbjörn
+dnl  Granlund.
+
+dnl  Copyright 2000-2002, 2005, 2009, 2011, 2012 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/bit (approx)
+C StrongARM	 -
+C XScale	 ?
+C Cortex-A5	 6.45	obsolete
+C Cortex-A7	 6.41	obsolete
+C Cortex-A8	 5.0	obsolete
+C Cortex-A9	 5.9	obsolete
+C Cortex-A15	 4.40	obsolete
+C Cortex-A17	 5.68	obsolete
+C Cortex-A53	 4.37	obsolete
+C Numbers measured with: speed -CD -s8-32 -t24 mpn_gcd_1
+
+define(`u0',    `r0')
+define(`v0',    `r1')
+
+ASM_START()
+	TEXT
+	ALIGN(16)
+PROLOGUE(mpn_gcd_11)
+	subs	r3, u0, v0	C			0
+	beq	L(end)		C
+
+	ALIGN(16)
+L(top):	sub	r2, v0, u0	C			0,5
+	and	r12, r2, r3	C			1
+	clz	r12, r12	C			2
+	rsb	r12, r12, #31	C			3
+	rsbcc	r3, r3, #0	C v = abs(u-v), even	1
+	movcs	u0, v0		C u = min(u,v)		1
+	lsr	v0, r3, r12	C			4
+	subs	r3, u0, v0	C			5
+	bne	L(top)		C
+
+L(end):	bx	lr
+EPILOGUE()
-- 
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