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Diffstat (limited to 'dev/Boot/BootKit/BitManip.hxx')
| -rw-r--r-- | dev/Boot/BootKit/BitManip.hxx | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/dev/Boot/BootKit/BitManip.hxx b/dev/Boot/BootKit/BitManip.hxx new file mode 100644 index 00000000..50b6a0c7 --- /dev/null +++ b/dev/Boot/BootKit/BitManip.hxx @@ -0,0 +1,20 @@ +/* ------------------------------------------- + + Copyright ZKA Technologies. + +------------------------------------------- */ + +#ifndef __BITMANIP_H__ +#define __BITMANIP_H__ + +/// Name: Bits API. +/// Purpose: Bit manip helpers, based on CoreBoot header. + +#define bk_set_bit(X, O) X = (1 << O) | X +#define bk_clear_bit(X, O) X = ~(1 << O) & X +#define bk_toogle(X, O) X = (1 << O) ^ X +#define bk_lsb(X) X = X & -X +#define bk_msb(X) X = -(mp_lsb(X)) & X +#define bk_look_for_bit(X, O) (1 << O) | X + +#endif // ifndef __BITMANIP_H__ |