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| -rw-r--r-- | include/qemu/range.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/qemu/range.h b/include/qemu/range.h index 3502372..b76cc0d 100644 --- a/include/qemu/range.h +++ b/include/qemu/range.h @@ -1,6 +1,22 @@ #ifndef QEMU_RANGE_H #define QEMU_RANGE_H +#include <inttypes.h> + +/* + * Operations on 64 bit address ranges. + * Notes: + * - ranges must not wrap around 0, but can include the last byte ~0x0LL. + * - this can not represent a full 0 to ~0x0LL range. + */ + +/* A structure representing a range of addresses. */ +struct Range { + uint64_t begin; /* First byte of the range, or 0 if empty. */ + uint64_t end; /* 1 + the last byte. 0 if range empty or ends at ~0x0LL. */ +}; +typedef struct Range Range; + /* Get last byte of a range from offset + length. * Undefined for ranges that wrap around 0. */ static inline uint64_t range_get_last(uint64_t offset, uint64_t len) |