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LinuxKPI: bitfields add more *replace_bits()

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Add or extend the already existing *_replace_bits() implementations
using macros as we do for the other parts in the file for
le<n>p_replace_bits(), u<n>p_replace_bits(), and _u<n>_replace_bits().

MFC after:	3 days
Reviewed by:	hselasky
Differential Revision: https://reviews.freebsd.org/D33799
This commit is contained in:
Bjoern A. Zeeb 2022-01-09 01:12:05 +00:00
parent deb9bfbd5b
commit 2fb0569f1f
1 changed files with 37 additions and 5 deletions
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42
sys/compat/linuxkpi/common/include/linux/bitfield.h
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@ -86,12 +86,44 @@ _leX_encode_bits(64)
_leX_encode_bits(32)
_leX_encode_bits(16)
static __inline void
le32p_replace_bits(uint32_t *p, uint32_t v, uint32_t f)
{
#define _leXp_replace_bits(_n) \
static __inline void \
le ## _n ## p_replace_bits(uint ## _n ## _t *p, \
uint ## _n ## _t v, uint ## _n ## _t f) \
{ \
*p = (*p & ~(cpu_to_le ## _n(f))) | \
le ## _n ## _encode_bits(v, f); \
}
*p = (*p & ~(cpu_to_le32(f))) | le32_encode_bits(v, f);
}
_leXp_replace_bits(64)
_leXp_replace_bits(32)
_leXp_replace_bits(16)
#define _uXp_replace_bits(_n) \
static __inline void \
u ## _n ## p_replace_bits(uint ## _n ## _t *p, \
uint ## _n ## _t v, uint ## _n ## _t f) \
{ \
*p = (*p & ~f) | u ## _n ## _encode_bits(v, f); \
}
_uXp_replace_bits(64)
_uXp_replace_bits(32)
_uXp_replace_bits(16)
_uXp_replace_bits(8)
#define _uX_replace_bits(_n) \
static __inline uint ## _n ## _t \
u ## _n ## _replace_bits(uint ## _n ## _t p, \
uint ## _n ## _t v, uint ## _n ## _t f) \
{ \
return ((p & ~f) | u ## _n ## _encode_bits(v, f)); \
}
_uX_replace_bits(64)
_uX_replace_bits(32)
_uX_replace_bits(16)
_uX_replace_bits(8)
#define __bf_shf(x) (__builtin_ffsll(x) - 1)