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| /* 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)
|
|
