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/pa32/sub_n.asm | 64 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/pa32/sub_n.asm

(limited to 'gmp-6.3.0/mpn/pa32/sub_n.asm')

diff --git a/gmp-6.3.0/mpn/pa32/sub_n.asm b/gmp-6.3.0/mpn/pa32/sub_n.asm
new file mode 100644
index 0000000..9c71655
--- /dev/null
+++ b/gmp-6.3.0/mpn/pa32/sub_n.asm
@@ -0,0 +1,64 @@
+dnl  HP-PA mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
+dnl  store difference in a third limb vector.
+
+dnl  Copyright 1992, 1994, 2000-2002 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 INPUT PARAMETERS
+C res_ptr	gr26
+C s1_ptr	gr25
+C s2_ptr	gr24
+C size		gr23
+
+C One might want to unroll this as for other processors, but it turns out that
+C the data cache contention after a store makes such unrolling useless.  We
+C can't come under 5 cycles/limb anyway.
+
+ASM_START()
+PROLOGUE(mpn_sub_n)
+	ldws,ma		4(0,%r25),%r20
+	ldws,ma		4(0,%r24),%r19
+
+	addib,=		-1,%r23,L(end)	C check for (SIZE == 1)
+	 sub		%r20,%r19,%r28	C subtract first limbs ignoring cy
+
+LDEF(loop)
+	ldws,ma		4(0,%r25),%r20
+	ldws,ma		4(0,%r24),%r19
+	stws,ma		%r28,4(0,%r26)
+	addib,<>	-1,%r23,L(loop)
+	 subb		%r20,%r19,%r28
+
+LDEF(end)
+	stws		%r28,0(0,%r26)
+	addc		%r0,%r0,%r28
+	bv		0(%r2)
+	 subi		1,%r28,%r28
+EPILOGUE()
-- 
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