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- /*
- * linux/arch/arm/lib/muldi3.S
- *
- * Author: Nicolas Pitre
- * Created: Oct 19, 2005
- * Copyright: Monta Vista Software, Inc.
- *
- * SPDX-License-Identifier: GPL-2.0
- */
- #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
- .pushsection .text.__muldi3, "ax"
- 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)
- .popsection
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