mirror of https://github.com/torvalds/linux.git
21 lines
685 B
C
21 lines
685 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_M68K_LIBGCC_H
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#define __ASM_M68K_LIBGCC_H
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#ifndef CONFIG_CPU_HAS_NO_MULDIV64
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/*
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* For those 68K CPUs that support 64bit multiply define umul_ppm()
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* for the common muldi3 libgcc helper function (in lib/muldi3.c).
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* CPUs that don't have it (like the original 68000 and ColdFire)
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* will fallback to using the C-coded version of umul_ppmm().
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*/
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#define umul_ppmm(w1, w0, u, v) \
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__asm__ ("mulu%.l %3,%1:%0" \
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: "=d" ((unsigned long)(w0)), \
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"=d" ((unsigned long)(w1)) \
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: "%0" ((unsigned long)(u)), \
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"dmi" ((unsigned long)(v)))
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#endif /* !CONFIG_CPU_HAS_NO_MULDIV64 */
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#endif /* __ASM_M68K_LIBGCC_H */
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