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/thumb/add_n.asm | 63 +++++++++++++++++++++++++++++++++++++++++++
 gmp-6.3.0/mpn/thumb/sub_n.asm | 63 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 126 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/thumb/add_n.asm
 create mode 100644 gmp-6.3.0/mpn/thumb/sub_n.asm

(limited to 'gmp-6.3.0/mpn/thumb')

diff --git a/gmp-6.3.0/mpn/thumb/add_n.asm b/gmp-6.3.0/mpn/thumb/add_n.asm
new file mode 100644
index 0000000..08ed60b
--- /dev/null
+++ b/gmp-6.3.0/mpn/thumb/add_n.asm
@@ -0,0 +1,63 @@
+dnl  ARM/Thumb mpn_add_n.
+
+dnl  Copyright 1997, 2000, 2012 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',	r0)
+define(`up',	r1)
+define(`vp',	r2)
+define(`n',	r3)
+
+ASM_START()
+	.thumb
+PROLOGUE(mpn_add_nc)
+	push	{r4, r5, r6}
+	ldr	r6, [sp, #12]		C init carry save register
+	sub	r6, #1
+	b	L(top)
+EPILOGUE()
+PROLOGUE(mpn_add_n)
+	push	{r4, r5, r6}
+	neg	r6, n			C init carry save register
+
+L(top):	ldmia	up!, {r4}		C load next limb from S1
+	cmp	n, r6			C tricky carry restore
+	ldmia	vp!, {r5}		C load next limb from S2
+	adc	r4, r5
+	stmia	rp!, {r4}		C store result limb to RES
+	sbc	r6, r6			C save negated carry
+	sub	n, #1
+	bne	L(top)
+
+	add	r0, r6, #1
+	pop	{r4, r5, r6}
+	bx	lr
+EPILOGUE()
diff --git a/gmp-6.3.0/mpn/thumb/sub_n.asm b/gmp-6.3.0/mpn/thumb/sub_n.asm
new file mode 100644
index 0000000..a385720
--- /dev/null
+++ b/gmp-6.3.0/mpn/thumb/sub_n.asm
@@ -0,0 +1,63 @@
+dnl  ARM/Thumb mpn_sub_n.
+
+dnl  Copyright 1997, 2000, 2012 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',	r0)
+define(`up',	r1)
+define(`vp',	r2)
+define(`n',	r3)
+
+ASM_START()
+	.thumb
+PROLOGUE(mpn_sub_nc)
+	push	{r4, r5, r6}
+	ldr	r6, [sp, #12]		C init carry save register
+	neg	r6, r6
+	b	L(top)
+EPILOGUE()
+PROLOGUE(mpn_sub_n)
+	push	{r4, r5, r6}
+	mov	r6, n			C init carry save register
+
+L(top):	ldmia	up!, {r4}		C load next limb from S1
+	cmp	n, r6			C tricky carry restore
+	ldmia	vp!, {r5}		C load next limb from S2
+	sbc	r4, r5
+	stmia	rp!, {r4}		C store result limb to RES
+	sbc	r6, r6			C save negated carry
+	sub	n, #1
+	bne	L(top)
+
+	neg	r0, r6
+	pop	{r4, r5, r6}
+	bx	lr
+EPILOGUE()
-- 
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