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/s390_64/mod_34lsub1.asm | 109 ++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/s390_64/mod_34lsub1.asm

(limited to 'gmp-6.3.0/mpn/s390_64/mod_34lsub1.asm')

diff --git a/gmp-6.3.0/mpn/s390_64/mod_34lsub1.asm b/gmp-6.3.0/mpn/s390_64/mod_34lsub1.asm
new file mode 100644
index 0000000..fd40011
--- /dev/null
+++ b/gmp-6.3.0/mpn/s390_64/mod_34lsub1.asm
@@ -0,0 +1,109 @@
+dnl  S/390-64 mpn_mod_34lsub1
+
+dnl  Copyright 2011 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 z900		 5.8
+C z990           2
+C z9		 ?
+C z10		 4.5
+C z196		 ?
+
+C TODO
+C  * Optimise summation code, see x86_64.
+
+C INPUT PARAMETERS
+define(`rp',	`%r2')
+define(`n',	`%r3')
+
+ASM_START()
+PROLOGUE(mpn_mod_34lsub1)
+	stmg	%r7, %r12, 56(%r15)
+	lghi	%r11, 0
+	lghi	%r12, 0
+	lghi	%r0, 0
+	lghi	%r8, 0
+	lghi	%r9, 0
+	lghi	%r10, 0
+	lghi	%r7, 0
+	aghi	%r3, -3
+	jl	.L3
+
+L(top):	alg	%r0, 0(%r2)
+	alcg	%r12, 8(%r2)
+	alcg	%r11, 16(%r2)
+	alcgr	%r8, %r7
+	la	%r2, 24(%r2)
+	aghi	%r3, -3
+	jnl	L(top)
+
+	lgr	%r7, %r8
+	srlg	%r1, %r11, 16
+	nihh	%r7, 0			C 0xffffffffffff
+	agr	%r7, %r1
+	srlg	%r8, %r8, 48
+	agr	%r7, %r8
+	sllg	%r11, %r11, 32
+	nihh	%r11, 0
+	agr	%r7, %r11
+.L3:
+	cghi	%r3, -3
+	je	.L6
+	alg	%r0, 0(%r2)
+	alcgr	%r10, %r10
+	cghi	%r3, -2
+	je	.L6
+	alg	%r12, 8(%r2)
+	alcgr	%r9, %r9
+.L6:
+	srlg	%r1, %r0, 48
+	nihh	%r0, 0			C 0xffffffffffff
+	agr	%r0, %r1
+	agr	%r0, %r7
+	srlg	%r1, %r12, 32
+	agr	%r0, %r1
+	srlg	%r1, %r10, 32
+	agr	%r0, %r1
+	llgfr	%r12, %r12
+	srlg	%r1, %r9, 16
+	sllg	%r12, %r12, 16
+	llgfr	%r10, %r10
+	agr	%r0, %r1
+	llill	%r2, 65535
+	agr	%r0, %r12
+	sllg	%r10, %r10, 16
+	ngr	%r2, %r9
+	agr	%r0, %r10
+	sllg	%r2, %r2, 32
+	agr	%r2, %r0
+	lmg	%r7, %r12, 56(%r15)
+	br	%r14
+EPILOGUE()
-- 
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