1*4882a593Smuzhiyun/* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun/* 3*4882a593Smuzhiyun * linux/arch/arm/lib/muldi3.S 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Author: Nicolas Pitre 6*4882a593Smuzhiyun * Created: Oct 19, 2005 7*4882a593Smuzhiyun * Copyright: Monta Vista Software, Inc. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun#include <linux/linkage.h> 11*4882a593Smuzhiyun#include <asm/assembler.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun#ifdef __ARMEB__ 14*4882a593Smuzhiyun#define xh r0 15*4882a593Smuzhiyun#define xl r1 16*4882a593Smuzhiyun#define yh r2 17*4882a593Smuzhiyun#define yl r3 18*4882a593Smuzhiyun#else 19*4882a593Smuzhiyun#define xl r0 20*4882a593Smuzhiyun#define xh r1 21*4882a593Smuzhiyun#define yl r2 22*4882a593Smuzhiyun#define yh r3 23*4882a593Smuzhiyun#endif 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunENTRY(__muldi3) 26*4882a593SmuzhiyunENTRY(__aeabi_lmul) 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun mul xh, yl, xh 29*4882a593Smuzhiyun mla xh, xl, yh, xh 30*4882a593Smuzhiyun mov ip, xl, lsr #16 31*4882a593Smuzhiyun mov yh, yl, lsr #16 32*4882a593Smuzhiyun bic xl, xl, ip, lsl #16 33*4882a593Smuzhiyun bic yl, yl, yh, lsl #16 34*4882a593Smuzhiyun mla xh, yh, ip, xh 35*4882a593Smuzhiyun mul yh, xl, yh 36*4882a593Smuzhiyun mul xl, yl, xl 37*4882a593Smuzhiyun mul ip, yl, ip 38*4882a593Smuzhiyun adds xl, xl, yh, lsl #16 39*4882a593Smuzhiyun adc xh, xh, yh, lsr #16 40*4882a593Smuzhiyun adds xl, xl, ip, lsl #16 41*4882a593Smuzhiyun adc xh, xh, ip, lsr #16 42*4882a593Smuzhiyun ret lr 43*4882a593Smuzhiyun 44*4882a593SmuzhiyunENDPROC(__muldi3) 45*4882a593SmuzhiyunENDPROC(__aeabi_lmul) 46