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/copyd.asm | 87 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/riscv/64/copyd.asm

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

diff --git a/gmp-6.3.0/mpn/riscv/64/copyd.asm b/gmp-6.3.0/mpn/riscv/64/copyd.asm
new file mode 100644
index 0000000..42557f8
--- /dev/null
+++ b/gmp-6.3.0/mpn/riscv/64/copyd.asm
@@ -0,0 +1,87 @@
+dnl  RISC-V/64 mpn_copyd
+
+dnl  Copyright 2023 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(`ap',	`a1')
+define(`n',	`a2')
+
+define(`i',	`a6')
+
+ASM_START()
+PROLOGUE(mpn_copyd)
+	slli	t0, n, 3
+	add	ap, ap, t0
+	add	rp, rp, t0
+	srli	i, n, 2
+
+	andi	t0, n, 1
+	andi	t1, n, 2
+	bnez	t0, L(bx1)
+L(bx0):	beqz	n, L(ret)
+	ld	t0, -8(ap)
+	bnez	t1, L(b10)
+L(b00):	addi	rp, rp, 8
+	addi	i, i, -1
+	j	L(b0)
+L(b10):	addi	ap, ap, 16
+	addi	rp, rp, 24
+	j	L(b2)
+L(bx1):	ld	t2, -8(ap)
+	bnez	t1, L(b11)
+	beqz	i, L(1)
+	addi	ap, ap, -8
+	addi	i, i, -1
+	j	L(b1)
+L(1):	sd	t2, -8(rp)
+	ret
+L(b11):	addi	ap, ap, 8
+	addi	rp, rp, 16
+	j	L(b3)
+
+	ALIGN(	16)
+L(top):	addi	ap, ap, -32
+	addi	rp, rp, -32
+	addi	i, i, -1
+L(b1):	ld	t0, -8(ap)
+	sd	t2, -8(rp)
+L(b0):	ld	t2, -16(ap)
+	sd	t0, -16(rp)
+L(b3):	ld	t0, -24(ap)
+	sd	t2, -24(rp)
+L(b2):	ld	t2, -32(ap)
+	sd	t0, -32(rp)
+	bnez	i, L(top)
+
+L(end):	sd	t2, -40(rp)
+L(ret):	ret
+EPILOGUE()
-- 
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