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/riscv/64/aorsmul_1.asm | 75 ++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm

(limited to 'gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm')

diff --git a/gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm b/gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm
new file mode 100644
index 0000000..1125a9f
--- /dev/null
+++ b/gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm
@@ -0,0 +1,75 @@
+dnl  RISC-V/64 mpn_addmul_1 and mpn_submul_1.
+
+dnl  Copyright 2016 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
+define(`rp',	`a0')
+define(`up',	`a1')
+define(`n',	`a2')
+define(`v0',	`a3')
+
+ifdef(`OPERATION_addmul_1',`
+    define(`ADDSUB',	`add')
+    define(`CMPCY',	`sltu	$1, $2, $3')
+    define(`func',	`mpn_addmul_1')
+')
+ifdef(`OPERATION_submul_1',`
+    define(`ADDSUB',	`sub')
+    define(`CMPCY',	`sltu	$1, $3, $2')
+    define(`func',	`mpn_submul_1')
+')
+
+MULFUNC_PROLOGUE(mpn_addmul_1 mpn_submul_1)
+
+ASM_START()
+PROLOGUE(func)
+	li	a6, 0
+
+L(top):	ld	a7, 0(up)
+	addi	up, up, 8	C bookkeeping
+	ld	a4, 0(rp)
+	addi	rp, rp, 8	C bookkeeping
+	mul	a5, a7, v0
+	addi	n, n, -1	C bookkeeping
+	mulhu	a7, a7, v0
+	ADDSUB	a5, a4, a5
+	ADDSUB	a6, a5, a6	C cycle 0, 3, ...
+	CMPCY(	a4, a5, a4)
+	add	a4, a4, a7
+	CMPCY(	a5, a6, a5)	C cycle 1, 4, ...
+	sd	a6, -8(rp)
+	add	a6, a4, a5	C cycle 2, 5, ...
+	bne	n, x0, L(top)	C bookkeeping
+
+L(end):	mv	a0, a6
+	ret
+EPILOGUE()
+ASM_END()
-- 
cgit v1.2.3