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/sparc64/ultrasparct3/add_n.asm | 126 +++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/sparc64/ultrasparct3/add_n.asm

(limited to 'gmp-6.3.0/mpn/sparc64/ultrasparct3/add_n.asm')

diff --git a/gmp-6.3.0/mpn/sparc64/ultrasparct3/add_n.asm b/gmp-6.3.0/mpn/sparc64/ultrasparct3/add_n.asm
new file mode 100644
index 0000000..0170746
--- /dev/null
+++ b/gmp-6.3.0/mpn/sparc64/ultrasparct3/add_n.asm
@@ -0,0 +1,126 @@
+dnl  SPARC v9 mpn_add_n for T3/T4.
+
+dnl  Contributed to the GNU project by David Miller.
+
+dnl  Copyright 2013 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 UltraSPARC T3:	 8
+C UltraSPARC T4:	 3
+
+C INPUT PARAMETERS
+define(`rp', `%i0')
+define(`up', `%i1')
+define(`vp', `%i2')
+define(`n',  `%i3')
+define(`cy', `%i4')
+
+define(`u0_off', `%l2')
+define(`u1_off', `%l3')
+define(`loop_n', `%l6')
+define(`tmp', `%l7')
+
+ASM_START()
+	REGISTER(%g2,#scratch)
+	REGISTER(%g3,#scratch)
+PROLOGUE(mpn_add_nc)
+	save	%sp, -176, %sp
+	b,a	L(ent)
+EPILOGUE()
+PROLOGUE(mpn_add_n)
+	save	%sp, -176, %sp
+
+	mov	0, cy
+L(ent):
+	subcc	n, 1, n
+	be	L(final_one)
+	 cmp	%g0, cy
+
+	ldx	[up + 0], %o4
+	sllx	n, 3, tmp
+
+	ldx	[vp + 0], %o5
+	add	up, tmp, u0_off
+
+	ldx	[up + 8], %g5
+	neg	tmp, loop_n
+
+	ldx	[vp + 8], %g1
+	add	u0_off, 8, u1_off
+
+	sub	loop_n, -(2 * 8), loop_n
+
+	brgez,pn loop_n, L(loop_tail)
+	 add	vp, (2 * 8), vp
+
+	b,a	L(top)
+	ALIGN(16)
+L(top):
+	addxccc(%o4, %o5, tmp)
+	ldx	[vp + 0], %o5
+
+	add	rp, (2 * 8), rp
+	ldx	[loop_n + u0_off], %o4
+
+	add	vp, (2 * 8), vp
+	stx	tmp, [rp - 16]
+
+	addxccc(%g1, %g5, tmp)
+	ldx	[vp - 8], %g1
+
+	ldx	[loop_n + u1_off], %g5
+	sub	loop_n, -(2 * 8), loop_n
+
+	brlz	loop_n, L(top)
+	 stx	tmp, [rp - 8]
+
+L(loop_tail):
+	addxccc(%o4, %o5, %g3)
+	add	loop_n, u0_off, up
+
+	addxccc(%g1, %g5, %g5)
+	stx	%g3, [rp + 0]
+
+	brgz,pt	loop_n, L(done)
+	 stx	%g5, [rp + 8]
+
+	add	rp, (2 * 8), rp
+L(final_one):
+	ldx	[up+0], %o4
+	ldx	[vp+0], %o5
+	addxccc(%o4, %o5, %g3)
+	stx	%g3, [rp+0]
+
+L(done):
+	addxc(%g0, %g0, %i0)
+	ret
+	 restore
+EPILOGUE()
-- 
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