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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
/* Based on linux/arch/arm/lib/muldi3.S */
#if defined __GNUC__
#include <arch/asm.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)
.global __aeabi_lmul
__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
mov pc, lr
.type __aeabi_lmul, %function
.size __aeabi_lmul, .-__aeabi_lmul
ENDPROC(__muldi3)
#endif
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