diff options
Diffstat (limited to 'tools/include/linux/bits.h')
| -rw-r--r-- | tools/include/linux/bits.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/include/linux/bits.h b/tools/include/linux/bits.h index 0eb24d21aac2..60044b608817 100644 --- a/tools/include/linux/bits.h +++ b/tools/include/linux/bits.h @@ -36,4 +36,19 @@ #define GENMASK_ULL(h, l) \ (GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l)) +#if !defined(__ASSEMBLY__) +/* + * Missing asm support + * + * __GENMASK_U128() depends on _BIT128() which would not work + * in the asm code, as it shifts an 'unsigned __init128' data + * type instead of direct representation of 128 bit constants + * such as long and unsigned long. The fundamental problem is + * that a 128 bit constant will get silently truncated by the + * gcc compiler. + */ +#define GENMASK_U128(h, l) \ + (GENMASK_INPUT_CHECK(h, l) + __GENMASK_U128(h, l)) +#endif + #endif /* __LINUX_BITS_H */ |