1/* 2 * linux/arch/arm/lib/muldi3.S 3 * 4 * Author: Nicolas Pitre 5 * Created: Oct 19, 2005 6 * Copyright: Monta Vista Software, Inc. 7 * 8 * SPDX-License-Identifier: GPL-2.0 9 */ 10 11#include <linux/linkage.h> 12#include <asm/assembler.h> 13 14#ifdef __ARMEB__ 15#define xh r0 16#define xl r1 17#define yh r2 18#define yl r3 19#else 20#define xl r0 21#define xh r1 22#define yl r2 23#define yh r3 24#endif 25 26.pushsection .text.__muldi3, "ax" 27ENTRY(__muldi3) 28ENTRY(__aeabi_lmul) 29 30 mul xh, yl, xh 31 mla xh, xl, yh, xh 32 mov ip, xl, lsr #16 33 mov yh, yl, lsr #16 34 bic xl, xl, ip, lsl #16 35 bic yl, yl, yh, lsl #16 36 mla xh, yh, ip, xh 37 mul yh, xl, yh 38 mul xl, yl, xl 39 mul ip, yl, ip 40 adds xl, xl, yh, lsl #16 41 adc xh, xh, yh, lsr #16 42 adds xl, xl, ip, lsl #16 43 adc xh, xh, ip, lsr #16 44 ret lr 45 46ENDPROC(__muldi3) 47ENDPROC(__aeabi_lmul) 48.popsection 49