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/x86/bdiv_dbm1c.asm | 129 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 gmp-6.3.0/mpn/x86/bdiv_dbm1c.asm

(limited to 'gmp-6.3.0/mpn/x86/bdiv_dbm1c.asm')

diff --git a/gmp-6.3.0/mpn/x86/bdiv_dbm1c.asm b/gmp-6.3.0/mpn/x86/bdiv_dbm1c.asm
new file mode 100644
index 0000000..0288c47
--- /dev/null
+++ b/gmp-6.3.0/mpn/x86/bdiv_dbm1c.asm
@@ -0,0 +1,129 @@
+dnl  x86 mpn_bdiv_dbm1.
+
+dnl  Copyright 2008, 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 P5
+C P6 model 0-8,10-12)
+C P6 model 9  (Banias)
+C P6 model 13 (Dothan)		 5.1
+C P4 model 0  (Willamette)
+C P4 model 1  (?)
+C P4 model 2  (Northwood)	13.67
+C P4 model 3  (Prescott)
+C P4 model 4  (Nocona)
+C Intel Atom
+C AMD K6
+C AMD K7			 3.5
+C AMD K8
+C AMD K10
+
+
+C TODO
+C  * Optimize for more x86 processors
+
+ASM_START()
+	TEXT
+	ALIGN(16)
+PROLOGUE(mpn_bdiv_dbm1c)
+	mov	16(%esp), %ecx		C d
+	push	%esi
+	mov	12(%esp), %esi		C ap
+	push	%edi
+	mov	12(%esp), %edi		C qp
+	push	%ebp
+	mov	24(%esp), %ebp		C n
+	push	%ebx
+
+	mov	(%esi), %eax
+	mul	%ecx
+	mov	36(%esp), %ebx
+	sub	%eax, %ebx
+	mov	%ebx, (%edi)
+	sbb	%edx, %ebx
+
+	mov	%ebp, %eax
+	and	$3, %eax
+	jz	L(b0)
+	cmp	$2, %eax
+	jc	L(b1)
+	jz	L(b2)
+
+L(b3):	lea	-8(%esi), %esi
+	lea	8(%edi), %edi
+	add	$-3, %ebp
+	jmp	L(3)
+
+L(b0):	mov	4(%esi), %eax
+	lea	-4(%esi), %esi
+	lea	12(%edi), %edi
+	add	$-4, %ebp
+	jmp	L(0)
+
+L(b2):	mov	4(%esi), %eax
+	lea	4(%esi), %esi
+	lea	4(%edi), %edi
+	add	$-2, %ebp
+	jmp	L(2)
+
+	ALIGN(8)
+L(top):	mov	4(%esi), %eax
+	mul	%ecx
+	lea	16(%edi), %edi
+	sub	%eax, %ebx
+	mov	8(%esi), %eax
+	mov	%ebx, -12(%edi)
+	sbb	%edx, %ebx
+L(0):	mul	%ecx
+	sub	%eax, %ebx
+	mov	%ebx, -8(%edi)
+	sbb	%edx, %ebx
+L(3):	mov	12(%esi), %eax
+	mul	%ecx
+	sub	%eax, %ebx
+	mov	%ebx, -4(%edi)
+	mov	16(%esi), %eax
+	lea	16(%esi), %esi
+	sbb	%edx, %ebx
+L(2):	mul	%ecx
+	sub	%eax, %ebx
+	mov	%ebx, 0(%edi)
+	sbb	%edx, %ebx
+L(b1):	add	$-4, %ebp
+	jns	L(top)
+
+	mov	%ebx, %eax
+	pop	%ebx
+	pop	%ebp
+	pop	%edi
+	pop	%esi
+	ret
+EPILOGUE()
-- 
cgit v1.2.3