diff options
Diffstat (limited to 'include/linux/tnum.h')
| -rw-r--r-- | include/linux/tnum.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/tnum.h b/include/linux/tnum.h index 1c3948a1d6ad..c52b862dad45 100644 --- a/include/linux/tnum.h +++ b/include/linux/tnum.h @@ -40,6 +40,8 @@ struct tnum tnum_arshift(struct tnum a, u8 min_shift, u8 insn_bitness); struct tnum tnum_add(struct tnum a, struct tnum b); /* Subtract two tnums, return @a - @b */ struct tnum tnum_sub(struct tnum a, struct tnum b); +/* Neg of a tnum, return 0 - @a */ +struct tnum tnum_neg(struct tnum a); /* Bitwise-AND, return @a & @b */ struct tnum tnum_and(struct tnum a, struct tnum b); /* Bitwise-OR, return @a | @b */ @@ -49,9 +51,15 @@ struct tnum tnum_xor(struct tnum a, struct tnum b); /* Multiply two tnums, return @a * @b */ struct tnum tnum_mul(struct tnum a, struct tnum b); +/* Return true if the known bits of both tnums have the same value */ +bool tnum_overlap(struct tnum a, struct tnum b); + /* Return a tnum representing numbers satisfying both @a and @b */ struct tnum tnum_intersect(struct tnum a, struct tnum b); +/* Returns a tnum representing numbers satisfying either @a or @b */ +struct tnum tnum_union(struct tnum t1, struct tnum t2); + /* Return @a with all but the lowest @size bytes cleared */ struct tnum tnum_cast(struct tnum a, u8 size); @@ -106,6 +114,10 @@ int tnum_sbin(char *str, size_t size, struct tnum a); struct tnum tnum_subreg(struct tnum a); /* Returns the tnum with the lower 32-bit subreg cleared */ struct tnum tnum_clear_subreg(struct tnum a); +/* Returns the tnum with the lower 32-bit subreg in *reg* set to the lower + * 32-bit subreg in *subreg* + */ +struct tnum tnum_with_subreg(struct tnum reg, struct tnum subreg); /* Returns the tnum with the lower 32-bit subreg set to value */ struct tnum tnum_const_subreg(struct tnum a, u32 value); /* Returns true if 32-bit subreg @a is a known constant*/ |