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/popcount.asm | 70 +++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/sparc64/ultrasparct3/popcount.asm

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

diff --git a/gmp-6.3.0/mpn/sparc64/ultrasparct3/popcount.asm b/gmp-6.3.0/mpn/sparc64/ultrasparct3/popcount.asm
new file mode 100644
index 0000000..de80f3c
--- /dev/null
+++ b/gmp-6.3.0/mpn/sparc64/ultrasparct3/popcount.asm
@@ -0,0 +1,70 @@
+dnl  SPARC v9 mpn_popcount 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:	15
+C UltraSPARC T4:	 2.5
+
+C INPUT PARAMETERS
+define(`up',   `%o0')
+define(`n',    `%o1')
+define(`pcnt', `%o5')
+
+ASM_START()
+	REGISTER(%g2,#scratch)
+	REGISTER(%g3,#scratch)
+PROLOGUE(mpn_popcount)
+	subcc	n, 1, n
+	be	L(final_one)
+	 clr	pcnt
+L(top):
+	ldx	[up + 0], %g1
+	sub	n, 2, n
+	ldx	[up + 8], %o4
+	add	up, 16, up
+	popc	%g1, %g2
+	popc	%o4, %g3
+	add	pcnt, %g2, pcnt
+	brgz	n, L(top)
+	 add	pcnt, %g3, pcnt
+	brlz,pt	n, L(done)
+	 nop
+L(final_one):
+	ldx	[up + 0], %g1
+	popc	%g1, %g2
+	add	pcnt, %g2, pcnt
+L(done):
+	retl
+	 mov	pcnt, %o0
+EPILOGUE()
-- 
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