You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
2.0 KiB
68 lines
2.0 KiB
#ifndef __LIBS_DEFS_H__
|
|
#define __LIBS_DEFS_H__
|
|
|
|
#ifndef NULL
|
|
#define NULL ((void *)0)
|
|
#endif
|
|
|
|
//#define __always_inline inline __attribute__((always_inline))
|
|
#define __noinline __attribute__((noinline))
|
|
#define __noreturn __attribute__((noreturn))
|
|
|
|
/* Represents true-or-false values */
|
|
typedef int bool;
|
|
|
|
/* Explicitly-sized versions of integer types */
|
|
//typedef char int8_t;
|
|
typedef unsigned char uint8_t;
|
|
typedef short int16_t;
|
|
typedef unsigned short uint16_t;
|
|
typedef int int32_t;
|
|
typedef unsigned int uint32_t;
|
|
typedef long long int64_t;
|
|
typedef unsigned long long uint64_t;
|
|
|
|
/* *
|
|
* Pointers and addresses are 32 bits long.
|
|
* We use pointer types to represent addresses,
|
|
* uintptr_t to represent the numerical values of addresses.
|
|
* */
|
|
typedef int32_t intptr_t;
|
|
typedef uint32_t uintptr_t;
|
|
|
|
/* size_t is used for memory object sizes */
|
|
typedef uintptr_t size_t;
|
|
|
|
/* used for page numbers */
|
|
typedef size_t ppn_t;
|
|
|
|
/* *
|
|
* Rounding operations (efficient when n is a power of 2)
|
|
* Round down to the nearest multiple of n
|
|
* */
|
|
#define ROUNDDOWN(a, n) ({ \
|
|
size_t __a = (size_t)(a); \
|
|
(typeof(a))(__a - __a % (n)); \
|
|
})
|
|
|
|
/* Round up to the nearest multiple of n */
|
|
#define ROUNDUP(a, n) ({ \
|
|
size_t __n = (size_t)(n); \
|
|
(typeof(a))(ROUNDDOWN((size_t)(a) + __n - 1, __n)); \
|
|
})
|
|
|
|
/* Return the offset of 'member' relative to the beginning of a struct type */
|
|
#define offsetof(type, member) \
|
|
((size_t)(&((type *)0)->member))
|
|
|
|
/* *
|
|
* to_struct - get the struct from a ptr
|
|
* @ptr: a struct pointer of member
|
|
* @type: the type of the struct this is embedded in
|
|
* @member: the name of the member within the struct
|
|
* */
|
|
#define to_struct(ptr, type, member) \
|
|
((type *)((char *)(ptr) - offsetof(type, member)))
|
|
|
|
#endif /* !__LIBS_DEFS_H__ */
|
|
|