mirror of
https://github.com/CTCaer/hekate
synced 2024-09-07 16:49:00 +00:00
129 lines
3 KiB
C
129 lines
3 KiB
C
/*
|
|
* Copyright © 2018, M4xw
|
|
* Copyright © 2014, Owen Shepherd
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
|
|
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
|
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
|
|
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
* PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef ELFLOAD_H
|
|
#define ELFLOAD_H
|
|
#include <stddef.h>
|
|
|
|
#include "elfarch.h"
|
|
#include "elf.h"
|
|
|
|
#include "../../utils/types.h"
|
|
|
|
#ifdef DEBUG
|
|
#include "../../gfx/gfx.h"
|
|
extern gfx_con_t gfx_con;
|
|
#define EL_DEBUG(format, ...) \
|
|
gfx_printf(&gfx_con, format __VA_OPT__(, ) __VA_ARGS__)
|
|
#else
|
|
#define EL_DEBUG(...) \
|
|
do \
|
|
{ \
|
|
} while (0)
|
|
#endif
|
|
|
|
typedef enum
|
|
{
|
|
EL_OK = 0,
|
|
|
|
EL_EIO,
|
|
EL_ENOMEM,
|
|
|
|
EL_NOTELF,
|
|
EL_WRONGBITS,
|
|
EL_WRONGENDIAN,
|
|
EL_WRONGARCH,
|
|
EL_WRONGOS,
|
|
EL_NOTEXEC,
|
|
EL_NODYN,
|
|
EL_BADREL,
|
|
|
|
} el_status;
|
|
|
|
typedef struct el_ctx
|
|
{
|
|
bool (*pread)(struct el_ctx *ctx, void *dest, size_t nb, size_t offset);
|
|
|
|
/* base_load_* -> address we are actually going to load at
|
|
*/
|
|
Elf_Addr
|
|
base_load_paddr,
|
|
base_load_vaddr;
|
|
|
|
/* size in memory of binary */
|
|
Elf_Addr memsz;
|
|
|
|
/* required alignment */
|
|
Elf_Addr align;
|
|
|
|
/* ELF header */
|
|
Elf_Ehdr ehdr;
|
|
|
|
// Section Header Str Table
|
|
Elf_Shdr shstr;
|
|
Elf_Shdr symtab;
|
|
|
|
/* Offset of dynamic table (0 if not ET_DYN) */
|
|
Elf_Off dynoff;
|
|
/* Size of dynamic table (0 if not ET_DYN) */
|
|
Elf_Addr dynsize;
|
|
} el_ctx;
|
|
|
|
el_status el_pread(el_ctx *ctx, void *def, size_t nb, size_t offset);
|
|
|
|
el_status el_init(el_ctx *ctx);
|
|
typedef void *(*el_alloc_cb)(
|
|
el_ctx *ctx,
|
|
Elf_Addr phys,
|
|
Elf_Addr virt,
|
|
Elf_Addr size);
|
|
|
|
el_status el_load(el_ctx *ctx, el_alloc_cb alloccb);
|
|
|
|
/* find the next phdr of type \p type, starting at \p *i.
|
|
* On success, returns EL_OK with *i set to the phdr number, and the phdr loaded
|
|
* in *phdr.
|
|
*
|
|
* If the end of the phdrs table was reached, *i is set to -1 and the contents
|
|
* of *phdr are undefined
|
|
*/
|
|
el_status el_findphdr(el_ctx *ctx, Elf_Phdr *phdr, uint32_t type, unsigned *i);
|
|
|
|
/* Relocate the loaded executable */
|
|
el_status el_relocate(el_ctx *ctx);
|
|
|
|
/* find a dynamic table entry
|
|
* returns the entry on success, dyn->d_tag = DT_NULL on failure
|
|
*/
|
|
el_status el_finddyn(el_ctx *ctx, Elf_Dyn *dyn, uint32_t type);
|
|
|
|
typedef struct
|
|
{
|
|
Elf_Off tableoff;
|
|
Elf_Addr tablesize;
|
|
Elf_Addr entrysize;
|
|
} el_relocinfo;
|
|
|
|
/* find all information regarding relocations of a specific type.
|
|
*
|
|
* pass DT_REL or DT_RELA for type
|
|
* sets ri->entrysize = 0 if not found
|
|
*/
|
|
el_status el_findrelocs(el_ctx *ctx, el_relocinfo *ri, uint32_t type);
|
|
|
|
#endif
|