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#ifndef _SYSLINUX_MOVEBITS_H
#define _SYSLINUX_MOVEBITS_H
#include <inttypes.h>
#include <stdio.h>
typedef uint32_t addr_t;
/*
* A syslinux_movelist is a linked list of move operations. The ordering
* is important, so no sorting requirement can be imposed.
*/
struct syslinux_movelist {
addr_t dst;
addr_t src;
addr_t len;
struct syslinux_movelist *next;
};
/*
* A syslinux_memmap is a sorted, linked list of memory regions,
* guaranteed to satisfy the constraint that no adjacent zones have
* the same type. Undefined memory ranges are represented with entries;
* they have type SMT_UNDEFINED.
*
* Note that there is no length field. The length of a region is obtained
* by looking at the start of the next entry in the chain.
*/
enum syslinux_memmap_types {
SMT_ERROR = -2, /* Internal error token */
SMT_END = -1, /* End of list */
SMT_UNDEFINED = 0, /* Unknown range */
SMT_FREE = 1, /* Available memory */
SMT_RESERVED, /* Unusable memory */
SMT_ALLOC, /* Memory allocated by user */
SMT_ZERO, /* Memory that should be zeroed */
};
struct syslinux_memmap {
addr_t start;
enum syslinux_memmap_types type;
struct syslinux_memmap *next;
};
/*
* moves is computed from "fraglist" and "memmap". Areas that are
* to be zeroed should be marked as such in the memmap, not in the
* fraglist.
*/
int syslinux_compute_movelist(struct syslinux_movelist **movelist,
struct syslinux_movelist *fraglist,
struct syslinux_memmap *memmap);
struct syslinux_memmap *syslinux_memory_map(void);
void syslinux_free_movelist(struct syslinux_movelist *);
int syslinux_add_movelist(struct syslinux_movelist **,
addr_t dst, addr_t src, addr_t len);
int syslinux_allocate_from_list(struct syslinux_movelist **freelist,
addr_t dst, addr_t len);
int syslinux_do_shuffle(struct syslinux_movelist *fraglist,
struct syslinux_memmap *memmap,
addr_t entry_point, addr_t entry_type,
uint16_t bootflags);
struct syslinux_memmap *syslinux_target_memmap(struct syslinux_movelist
*fraglist,
struct syslinux_memmap *memmap);
/* Operatons on struct syslinux_memmap */
struct syslinux_memmap *syslinux_init_memmap(void);
int syslinux_add_memmap(struct syslinux_memmap **list,
addr_t start, addr_t len,
enum syslinux_memmap_types type);
enum syslinux_memmap_types syslinux_memmap_type(struct syslinux_memmap *list,
addr_t start, addr_t len);
int syslinux_memmap_largest(struct syslinux_memmap *list,
enum syslinux_memmap_types type,
addr_t * start, addr_t * len);
void syslinux_free_memmap(struct syslinux_memmap *list);
struct syslinux_memmap *syslinux_dup_memmap(struct syslinux_memmap *list);
int syslinux_memmap_find(struct syslinux_memmap *list,
enum syslinux_memmap_types type,
addr_t * start, addr_t * len, addr_t align);
/* Debugging functions */
#ifdef DEBUG
void syslinux_dump_movelist(struct syslinux_movelist *ml);
void syslinux_dump_memmap(struct syslinux_memmap *memmap);
#else
#define syslinux_dump_movelist(x) ((void)0)
#define syslinux_dump_memmap(x) ((void)0)
#endif
#endif /* _SYSLINUX_MOVEBITS_H */
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