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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_M68K_LIBGCC_H
#define __ASM_M68K_LIBGCC_H
#ifndef CONFIG_CPU_HAS_NO_MULDIV64
/*
* For those 68K CPUs that support 64bit multiply define umul_ppm()
* for the common muldi3 libgcc helper function (in lib/muldi3.c).
* CPUs that don't have it (like the original 68000 and ColdFire)
* will fallback to using the C-coded version of umul_ppmm().
*/
#define umul_ppmm(w1, w0, u, v) \
do { \
unsigned long __u = (u), __v = (v); \
unsigned long __w0, __w1; \
\
__asm__ ("mulu%.l %3,%1:%0" \
: "=d" (__w0), \
"=d" (__w1) \
: "%0" (__u), \
"dmi" (__v)); \
\
(w0) = __w0; (w1) = __w1; \
} while (0)
#endif /* !CONFIG_CPU_HAS_NO_MULDIV64 */
#endif /* __ASM_M68K_LIBGCC_H */
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