mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-14 14:34:28 +08:00
d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
46 lines
771 B
ArmAsm
46 lines
771 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* linux/arch/arm/lib/muldi3.S
|
|
*
|
|
* Author: Nicolas Pitre
|
|
* Created: Oct 19, 2005
|
|
* Copyright: Monta Vista Software, Inc.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/assembler.h>
|
|
|
|
#ifdef __ARMEB__
|
|
#define xh r0
|
|
#define xl r1
|
|
#define yh r2
|
|
#define yl r3
|
|
#else
|
|
#define xl r0
|
|
#define xh r1
|
|
#define yl r2
|
|
#define yh r3
|
|
#endif
|
|
|
|
ENTRY(__muldi3)
|
|
ENTRY(__aeabi_lmul)
|
|
|
|
mul xh, yl, xh
|
|
mla xh, xl, yh, xh
|
|
mov ip, xl, lsr #16
|
|
mov yh, yl, lsr #16
|
|
bic xl, xl, ip, lsl #16
|
|
bic yl, yl, yh, lsl #16
|
|
mla xh, yh, ip, xh
|
|
mul yh, xl, yh
|
|
mul xl, yl, xl
|
|
mul ip, yl, ip
|
|
adds xl, xl, yh, lsl #16
|
|
adc xh, xh, yh, lsr #16
|
|
adds xl, xl, ip, lsl #16
|
|
adc xh, xh, ip, lsr #16
|
|
ret lr
|
|
|
|
ENDPROC(__muldi3)
|
|
ENDPROC(__aeabi_lmul)
|