1 #ifndef _GPXE_UMALLOC_H 2 #define _GPXE_UMALLOC_H 3 4 /** 5 * @file 6 * 7 * User memory allocation 8 * 9 */ 10 11 FILE_LICENCE ( GPL2_OR_LATER ); 12 13 #include <gpxe/api.h> 14 #include <config/umalloc.h> 15 #include <gpxe/uaccess.h> 16 17 /** 18 * Provide a user memory allocation API implementation 19 * 20 * @v _prefix Subsystem prefix 21 * @v _api_func API function 22 * @v _func Implementing function 23 */ 24 #define PROVIDE_UMALLOC( _subsys, _api_func, _func ) \ 25 PROVIDE_SINGLE_API ( UMALLOC_PREFIX_ ## _subsys, _api_func, _func ) 26 27 /* Include all architecture-independent I/O API headers */ 28 #include <gpxe/efi/efi_umalloc.h> 29 30 /* Include all architecture-dependent I/O API headers */ 31 #include <bits/umalloc.h> 32 33 /** 34 * Reallocate external memory 35 * 36 * @v userptr Memory previously allocated by umalloc(), or UNULL 37 * @v new_size Requested size 38 * @ret userptr Allocated memory, or UNULL 39 * 40 * Calling realloc() with a new size of zero is a valid way to free a 41 * memory block. 42 */ 43 userptr_t urealloc ( userptr_t userptr, size_t new_size ); 44 45 /** 46 * Allocate external memory 47 * 48 * @v size Requested size 49 * @ret userptr Memory, or UNULL 50 * 51 * Memory is guaranteed to be aligned to a page boundary. 52 */ 53 static inline __always_inline userptr_t umalloc ( size_t size ) { 54 return urealloc ( UNULL, size ); 55 } 56 57 /** 58 * Free external memory 59 * 60 * @v userptr Memory allocated by umalloc(), or UNULL 61 * 62 * If @c ptr is UNULL, no action is taken. 63 */ 64 static inline __always_inline void ufree ( userptr_t userptr ) { 65 urealloc ( userptr, 0 ); 66 } 67 68 #endif /* _GPXE_UMALLOC_H */ 69
