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84f3fb7a2a
The traditional 68000 processors and the newer reduced instruction set ColdFire processors do not support the 32*32->64 multiply or the 64/32->32 divide instructions. This is not a difference based on the presence of a hardware MMU or not. Create a new config symbol to mark that a CPU type doesn't support the longer multiply/divide instructions. Use this then as a basis for using the fast 64bit based divide (in div64.h) and for linking in the extra libgcc functions that may be required (mulsi3, divsi3, etc). Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
33 lines
1.0 KiB
C
33 lines
1.0 KiB
C
#include <linux/module.h>
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asmlinkage long long __ashldi3 (long long, int);
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asmlinkage long long __ashrdi3 (long long, int);
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asmlinkage long long __lshrdi3 (long long, int);
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asmlinkage long long __muldi3 (long long, long long);
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/* The following are special because they're not called
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explicitly (the C compiler generates them). Fortunately,
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their interface isn't gonna change any time soon now, so
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it's OK to leave it out of version control. */
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EXPORT_SYMBOL(__ashldi3);
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EXPORT_SYMBOL(__ashrdi3);
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EXPORT_SYMBOL(__lshrdi3);
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EXPORT_SYMBOL(__muldi3);
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#if defined(CONFIG_CPU_HAS_NO_MULDIV64)
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/*
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* Simpler 68k and ColdFire parts also need a few other gcc functions.
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*/
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extern long long __divsi3(long long, long long);
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extern long long __modsi3(long long, long long);
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extern long long __mulsi3(long long, long long);
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extern long long __udivsi3(long long, long long);
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extern long long __umodsi3(long long, long long);
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EXPORT_SYMBOL(__divsi3);
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EXPORT_SYMBOL(__modsi3);
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EXPORT_SYMBOL(__mulsi3);
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EXPORT_SYMBOL(__udivsi3);
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EXPORT_SYMBOL(__umodsi3);
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#endif
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