mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
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>
|
|
|
|
asmlinkage long long __ashldi3 (long long, int);
|
|
asmlinkage long long __ashrdi3 (long long, int);
|
|
asmlinkage long long __lshrdi3 (long long, int);
|
|
asmlinkage long long __muldi3 (long long, long long);
|
|
|
|
/* The following are special because they're not called
|
|
explicitly (the C compiler generates them). Fortunately,
|
|
their interface isn't gonna change any time soon now, so
|
|
it's OK to leave it out of version control. */
|
|
EXPORT_SYMBOL(__ashldi3);
|
|
EXPORT_SYMBOL(__ashrdi3);
|
|
EXPORT_SYMBOL(__lshrdi3);
|
|
EXPORT_SYMBOL(__muldi3);
|
|
|
|
#if defined(CONFIG_CPU_HAS_NO_MULDIV64)
|
|
/*
|
|
* Simpler 68k and ColdFire parts also need a few other gcc functions.
|
|
*/
|
|
extern long long __divsi3(long long, long long);
|
|
extern long long __modsi3(long long, long long);
|
|
extern long long __mulsi3(long long, long long);
|
|
extern long long __udivsi3(long long, long long);
|
|
extern long long __umodsi3(long long, long long);
|
|
|
|
EXPORT_SYMBOL(__divsi3);
|
|
EXPORT_SYMBOL(__modsi3);
|
|
EXPORT_SYMBOL(__mulsi3);
|
|
EXPORT_SYMBOL(__udivsi3);
|
|
EXPORT_SYMBOL(__umodsi3);
|
|
#endif
|