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/invert_limb.asm | 92 ++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/sparc64/ultrasparct3/invert_limb.asm

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

diff --git a/gmp-6.3.0/mpn/sparc64/ultrasparct3/invert_limb.asm b/gmp-6.3.0/mpn/sparc64/ultrasparct3/invert_limb.asm
new file mode 100644
index 0000000..4da49cf
--- /dev/null
+++ b/gmp-6.3.0/mpn/sparc64/ultrasparct3/invert_limb.asm
@@ -0,0 +1,92 @@
+dnl  SPARC T3/T4/T5 mpn_invert_limb.
+
+dnl  Contributed to the GNU project by Torbjörn Granlund.
+
+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:	 ?
+C UltraSPARC T4/T5:	 ?
+
+C INPUT PARAMETERS
+define(`d',  `%o0')
+
+ASM_START()
+	REGISTER(%g2,#scratch)
+	REGISTER(%g3,#scratch)
+PROLOGUE(mpn_invert_limb)
+	srlx	d, 54, %g1
+	LEA64(approx_tab, g2, g3)
+	and	%g1, 0x1fe, %g1
+	srlx	d, 24, %g4
+	lduh	[%g2+%g1], %g3
+	add	%g4, 1, %g4
+	sllx	%g3, 11, %g2
+	add	%g2, -1, %g2
+	mulx	%g3, %g3, %g3
+	mulx	%g3, %g4, %g3
+	srlx	%g3, 40, %g3
+	sub	%g2, %g3, %g2
+	sllx	%g2, 60, %g1
+	mulx	%g2, %g2, %g3
+	mulx	%g3, %g4, %g4
+	sub	%g1, %g4, %g1
+	srlx	%g1, 47, %g1
+	sllx	%g2, 13, %g2
+	add	%g1, %g2, %g1
+	and	d, 1, %g2
+	srlx	%g1, 1, %g4
+	sub	%g0, %g2, %g3
+	and	%g4, %g3, %g3
+	srlx	d, 1, %g4
+	add	%g4, %g2, %g2
+	mulx	%g1, %g2, %g2
+	sub	%g3, %g2, %g2
+	umulxhi(%g1, %g2, %g2)
+	srlx	%g2, 1, %g2
+	sllx	%g1, 31, %g1
+	add	%g2, %g1, %g1
+	mulx	%g1, d, %g3
+	umulxhi(d, %g1, %g4)
+	addcc	%g3, d, %g0
+	addxc(	%g4, d, %o0)
+	jmp	%o7+8
+	 sub	%g1, %o0, %o0
+EPILOGUE()
+
+	RODATA
+	ALIGN(2)
+	TYPE(	approx_tab, object)
+	SIZE(	approx_tab, 512)
+approx_tab:
+forloop(i,256,512-1,dnl
+`	.half	eval(0x7fd00/i)
+')dnl
-- 
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