arch/all-pc/boot/grub2-aros/include/grub/elfload.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2003, 2004, 2005, 2006, 2007  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef GRUB_ELFLOAD_HEADER
  20 #define GRUB_ELFLOAD_HEADER     1
  21
  22 #include <grub/err.h>
  23 #include <grub/elf.h>
  24 #include <grub/file.h>
  25 #include <grub/symbol.h>
  26 #include <grub/types.h>
  27
  28 struct grub_elf_file
  29 {
  30   grub_file_t file;
  31   union {
  32     Elf64_Ehdr ehdr64;
  33     Elf32_Ehdr ehdr32;
  34   } ehdr;
  35   void *phdrs;
  36   char *filename;
  37 };
  38 typedef struct grub_elf_file *grub_elf_t;
  39
  40 typedef int (*grub_elf32_phdr_iterate_hook_t)
  41   (grub_elf_t elf, Elf32_Phdr *phdr, void *arg);
  42 typedef int (*grub_elf64_phdr_iterate_hook_t)
  43   (grub_elf_t elf, Elf64_Phdr *phdr, void *arg);
  44
  45 grub_elf_t grub_elf_open (const char *);
  46 grub_elf_t grub_elf_file (grub_file_t file, const char *filename);
  47 grub_err_t grub_elf_close (grub_elf_t);
  48
  49 int grub_elf_is_elf32 (grub_elf_t);
  50 grub_size_t grub_elf32_size (grub_elf_t,
  51                              Elf32_Addr *, grub_uint32_t *);
  52 enum grub_elf_load_flags
  53   {
  54     GRUB_ELF_LOAD_FLAGS_NONE = 0,
  55     GRUB_ELF_LOAD_FLAGS_LOAD_PT_DYNAMIC = 1,
  56     GRUB_ELF_LOAD_FLAGS_BITS = 6,
  57     GRUB_ELF_LOAD_FLAGS_ALL_BITS = 0,
  58     GRUB_ELF_LOAD_FLAGS_28BITS = 2,
  59     GRUB_ELF_LOAD_FLAGS_30BITS = 4,
  60     GRUB_ELF_LOAD_FLAGS_62BITS = 6,
  61   };
  62 grub_err_t grub_elf32_load (grub_elf_t, const char *filename,
  63                             void *load_offset, enum grub_elf_load_flags flags, grub_addr_t *,
  64                             grub_size_t *);
  65
  66 int grub_elf_is_elf64 (grub_elf_t);
  67 grub_size_t grub_elf64_size (grub_elf_t,
  68                              Elf64_Addr *, grub_uint64_t *);
  69 grub_err_t grub_elf64_load (grub_elf_t, const char *filename,
  70                             void *load_offset, enum grub_elf_load_flags flags, grub_addr_t *,
  71                             grub_size_t *);
  72 grub_err_t grub_elf32_load_phdrs (grub_elf_t elf);
  73 grub_err_t grub_elf64_load_phdrs (grub_elf_t elf);
  74
  75 #define FOR_ELF32_PHDRS(elf, phdr) \
  76   for (grub_elf32_load_phdrs (elf), phdr = elf->phdrs; \
  77        phdr && phdr < (Elf32_Phdr *) elf->phdrs + elf->ehdr.ehdr32.e_phnum; phdr++)
  78 #define FOR_ELF64_PHDRS(elf, phdr) \
  79   for (grub_elf64_load_phdrs (elf), phdr = elf->phdrs;          \
  80        phdr && phdr < (Elf64_Phdr *) elf->phdrs + elf->ehdr.ehdr64.e_phnum; phdr++)
  81
  82 #endif /* ! GRUB_ELFLOAD_HEADER */