include/grub/aout.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2008  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_AOUT_HEADER
  20 #define GRUB_AOUT_HEADER 1
  21
  22 #include <grub/types.h>
  23
  24 struct grub_aout32_header
  25 {
  26   grub_uint32_t a_midmag;       /* htonl(flags<<26 | mid<<16 | magic) */
  27   grub_uint32_t a_text;         /* text segment size */
  28   grub_uint32_t a_data;         /* initialized data size */
  29   grub_uint32_t a_bss;          /* uninitialized data size */
  30   grub_uint32_t a_syms;         /* symbol table size */
  31   grub_uint32_t a_entry;        /* entry point */
  32   grub_uint32_t a_trsize;       /* text relocation size */
  33   grub_uint32_t a_drsize;       /* data relocation size */
  34 };
  35
  36 struct grub_aout64_header
  37 {
  38   grub_uint32_t a_midmag;       /* htonl(flags<<26 | mid<<16 | magic) */
  39   grub_uint64_t a_text;         /* text segment size */
  40   grub_uint64_t a_data;         /* initialized data size */
  41   grub_uint64_t a_bss;          /* uninitialized data size */
  42   grub_uint64_t a_syms;         /* symbol table size */
  43   grub_uint64_t a_entry;        /* entry point */
  44   grub_uint64_t a_trsize;       /* text relocation size */
  45   grub_uint64_t a_drsize;       /* data relocation size */
  46 };
  47
  48 union grub_aout_header
  49 {
  50   struct grub_aout32_header aout32;
  51   struct grub_aout64_header aout64;
  52 };
  53
  54 #define AOUT_TYPE_NONE          0
  55 #define AOUT_TYPE_AOUT32        1
  56 #define AOUT_TYPE_AOUT64        6
  57
  58 #define AOUT32_OMAGIC           0x107   /* 0407 old impure format */
  59 #define AOUT32_NMAGIC           0x108   /* 0410 read-only text */
  60 #define AOUT32_ZMAGIC           0x10b   /* 0413 demand load format */
  61 #define AOUT32_QMAGIC           0xcc    /* 0314 "compact" demand load format */
  62
  63 #define AOUT64_OMAGIC           0x1001
  64 #define AOUT64_ZMAGIC           0x1002
  65 #define AOUT64_NMAGIC           0x1003
  66
  67 #define AOUT_MID_ZERO           0       /* unknown - implementation dependent */
  68 #define AOUT_MID_SUN010         1       /* sun 68010/68020 binary */
  69 #define AOUT_MID_SUN020         2       /* sun 68020-only binary */
  70 #define AOUT_MID_I386           134     /* i386 BSD binary */
  71 #define AOUT_MID_SPARC          138     /* sparc */
  72 #define AOUT_MID_HP200          200     /* hp200 (68010) BSD binary */
  73 #define AOUT_MID_HP300          300     /* hp300 (68020+68881) BSD binary */
  74 #define AOUT_MID_HPUX           0x20C   /* hp200/300 HP-UX binary */
  75 #define AOUT_MID_HPUX800        0x20B   /* hp800 HP-UX binary */
  76
  77 #define AOUT_FLAG_PIC           0x10    /* contains position independent code */
  78 #define AOUT_FLAG_DYNAMIC       0x20    /* contains run-time link-edit info */
  79 #define AOUT_FLAG_DPMASK        0x30    /* mask for the above */
  80
  81 #define AOUT_GETMAGIC(header) ((header).a_midmag & 0xffff)
  82 #define AOUT_GETMID(header) ((header).a_midmag >> 16) & 0x03ff)
  83 #define AOUT_GETFLAG(header) ((header).a_midmag >> 26) & 0x3f)
  84
  85 int EXPORT_FUNC(grub_aout_get_type) (union grub_aout_header *header);
  86
  87 grub_err_t EXPORT_FUNC(grub_aout_load) (grub_file_t file, int offset,
  88                                         grub_addr_t load_addr, int load_size,
  89                                         grub_addr_t bss_end_addr);
  90
  91 #endif /* ! GRUB_AOUT_HEADER */