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#ifndef KEXEC_ELF_H
#define KEXEC_ELF_H
#include <stdint.h>
#include <sys/types.h>
struct kexec_info;
struct mem_ehdr {
unsigned ei_class;
unsigned ei_data;
unsigned e_type;
unsigned e_machine;
unsigned e_version;
unsigned e_flags;
unsigned e_phnum;
unsigned e_shnum;
unsigned e_shstrndx;
unsigned long long e_entry;
unsigned long long e_phoff;
unsigned long long e_shoff;
unsigned e_notenum;
struct mem_phdr *e_phdr;
struct mem_shdr *e_shdr;
struct mem_note *e_note;
unsigned long rel_addr, rel_size;
};
struct mem_phdr {
unsigned long long p_paddr;
unsigned long long p_vaddr;
unsigned long long p_filesz;
unsigned long long p_memsz;
unsigned long long p_offset;
const char *p_data;
unsigned p_type;
unsigned p_flags;
unsigned long long p_align;
};
struct mem_shdr {
unsigned sh_name;
unsigned sh_type;
unsigned long long sh_flags;
unsigned long long sh_addr;
unsigned long long sh_offset;
unsigned long long sh_size;
unsigned sh_link;
unsigned sh_info;
unsigned long long sh_addralign;
unsigned long long sh_entsize;
const unsigned char *sh_data;
};
struct mem_sym {
unsigned long st_name; /* Symbol name (string tbl index) */
unsigned char st_info; /* No defined meaning, 0 */
unsigned char st_other; /* Symbol type and binding */
unsigned st_shndx; /* Section index */
unsigned long long st_value; /* Symbol value */
unsigned long long st_size; /* Symbol size */
};
struct mem_rela {
unsigned long long r_offset;
unsigned r_sym;
unsigned r_type;
unsigned long long r_addend;
};
struct mem_note {
unsigned n_type;
unsigned n_descsz;
const char *n_name;
const void *n_desc;
};
/* The definition of an ELF note does not vary depending
* on ELFCLASS.
*/
typedef struct
{
uint32_t n_namesz; /* Length of the note's name. */
uint32_t n_descsz; /* Length of the note's descriptor. */
uint32_t n_type; /* Type of the note. */
} ElfNN_Nhdr;
/* Misc flags */
#define ELF_SKIP_FILESZ_CHECK 0x00000001
extern void free_elf_info(struct mem_ehdr *ehdr);
extern int build_elf_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
uint32_t flags);
extern int build_elf_exec_info(const char *buf, off_t len,
struct mem_ehdr *ehdr, uint32_t flags);
extern int build_elf_rel_info(const char *buf, off_t len, struct mem_ehdr *ehdr,
uint32_t flags);
extern int build_elf_core_info(const char *buf, off_t len,
struct mem_ehdr *ehdr, uint32_t flags);
extern int elf_exec_load(struct mem_ehdr *ehdr, struct kexec_info *info);
extern int elf_rel_load(struct mem_ehdr *ehdr, struct kexec_info *info,
unsigned long min, unsigned long max, int end);
extern void elf_exec_build_load(struct kexec_info *info, struct mem_ehdr *ehdr,
const char *buf, off_t len, uint32_t flags);
extern void elf_rel_build_load(struct kexec_info *info, struct mem_ehdr *ehdr,
const char *buf, off_t len, unsigned long min, unsigned long max,
int end, uint32_t flags);
extern int elf_rel_find_symbol(struct mem_ehdr *ehdr,
const char *name, struct mem_sym *ret_sym);
extern unsigned long elf_rel_get_addr(struct mem_ehdr *ehdr, const char *name);
extern void elf_rel_set_symbol(struct mem_ehdr *ehdr,
const char *name, const void *buf, size_t size);
extern void elf_rel_get_symbol(struct mem_ehdr *ehdr,
const char *name, void *buf, size_t size);
uint16_t elf16_to_cpu(const struct mem_ehdr *ehdr, uint16_t value);
uint32_t elf32_to_cpu(const struct mem_ehdr *ehdr, uint32_t value);
uint64_t elf64_to_cpu(const struct mem_ehdr *ehdr, uint64_t value);
uint16_t cpu_to_elf16(const struct mem_ehdr *ehdr, uint16_t value);
uint32_t cpu_to_elf32(const struct mem_ehdr *ehdr, uint32_t value);
uint64_t cpu_to_elf64(const struct mem_ehdr *ehdr, uint64_t value);
unsigned long elf_max_addr(const struct mem_ehdr *ehdr);
/* Architecture specific helper functions */
extern int machine_verify_elf_rel(struct mem_ehdr *ehdr);
extern void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *sym,
unsigned long r_type, void *location, unsigned long address,
unsigned long value);
#endif /* KEXEC_ELF_H */
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