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/powerpc32/750/com.asm | 79 +++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/powerpc32/750/com.asm

(limited to 'gmp-6.3.0/mpn/powerpc32/750/com.asm')

diff --git a/gmp-6.3.0/mpn/powerpc32/750/com.asm b/gmp-6.3.0/mpn/powerpc32/750/com.asm
new file mode 100644
index 0000000..1b8b574
--- /dev/null
+++ b/gmp-6.3.0/mpn/powerpc32/750/com.asm
@@ -0,0 +1,79 @@
+dnl  PowerPC 750 mpn_com -- mpn bitwise one's complement
+
+dnl  Copyright 2002, 2003 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 603e:            ?
+C 604e:            3.0
+C 75x (G3):        2.0
+C 7400,7410 (G4):  2.0
+C 744x,745x (G4+): 3.0
+
+C void mpn_com (mp_ptr dst, mp_srcptr src, mp_size_t size);
+C
+C This loop form is necessary for the claimed speed.
+
+ASM_START()
+PROLOGUE(mpn_com)
+
+	C r3	dst
+	C r4	src
+	C r5	size
+
+	mtctr	r5		C size
+	lwz	r5, 0(r4)	C src low limb
+
+	sub	r4, r4, r3	C src-dst
+	subi	r3, r3, 4	C dst-4
+
+	addi	r4, r4, 8	C src-dst+8
+	bdz	L(one)
+
+L(top):
+	C r3	&dst[i-1]
+	C r4	src-dst
+	C r5	src[i]
+	C r6	scratch
+
+	not	r6, r5		C ~src[i]
+	lwzx	r5, r4,r3	C src[i+1]
+
+	stwu	r6, 4(r3)	C dst[i]
+	bdnz	L(top)
+
+L(one):
+	not	r6, r5
+
+	stw	r6, 4(r3)	C dst[size-1]
+	blr
+
+EPILOGUE()
-- 
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