arch/all-mingw32/bootstrap/elfloader32.h

   1 #ifndef ELFLOADER_H_
   2 #define ELFLOADER_H_
   3
   4 /*
   5  Copyright (C) 2006 The AROS Development Team. All rights reserved.
   6  $Id$
   7  */
   8
   9 #define SHT_PROGBITS    1
  10 #define SHT_SYMTAB  2
  11 #define SHT_STRTAB  3
  12 #define SHT_RELA    4
  13 #define SHT_NOBITS  8
  14 #define SHT_REL     9
  15
  16 #define ET_REL      1
  17 #define EM_386      3
  18
  19 #define STT_OBJECT  1
  20 #define STT_FUNC    2
  21
  22 #define SHN_ABS     0xfff1
  23 #define SHN_COMMON  0xfff2
  24 #define SHN_UNDEF   0
  25
  26 #define SHF_WRITE   (1 << 0)
  27 #define SHF_ALLOC   (1 << 1)
  28 #define SHF_EXECINSTR   (1 << 2)
  29
  30 #define R_386_NONE      0
  31 #define R_386_32        1
  32 #define R_386_PC32      2
  33
  34 #define ELF64_ST_TYPE(i)    ((i) & 0x0F)
  35
  36 #define ELF32_R_SYM(val)        ((val) >> 8)
  37 #define ELF32_R_TYPE(val)       ((val) & 0xff)
  38 #define ELF32_R_INFO(sym, type) (((sym) << 8) + ((type) & 0xff))
  39
  40 struct elfheader
  41 {
  42   unsigned char ident[16];
  43   unsigned short type;
  44   unsigned short machine;
  45   unsigned int version;
  46   void*  entry;
  47   unsigned int phoff;
  48   unsigned int shoff;
  49   unsigned int flags;
  50   unsigned short ehsize;
  51   unsigned short phentsize;
  52   unsigned short phnum;
  53   unsigned short shentsize;
  54   unsigned short shnum;
  55   unsigned short shstrndx;
  56
  57   /* these are internal, and not part of the header proper. they are wider
  58    * versions of shnum and shstrndx for when they don't fit in the header
  59    * and we need to get them from the first section header. see
  60    * load_header() for details
  61    */
  62   unsigned int int_shnum;
  63   unsigned int int_shstrndx;
  64 };
  65
  66 struct sheader
  67 {
  68   unsigned int name;
  69   unsigned int type;
  70   unsigned int flags;
  71   void*  addr;
  72   unsigned int offset;
  73   unsigned int size;
  74   unsigned int link;
  75   unsigned int info;
  76   unsigned int addralign;
  77   unsigned int entsize;
  78 };
  79
  80 struct symbol
  81 {
  82   unsigned int name;     /* Offset of the name string in the string table */
  83   unsigned int value;    /* Varies; eg. the offset of the symbol in its hunk */
  84   unsigned int size;     /* How much memory does the symbol occupy */
  85   unsigned char info;     /* What kind of symbol is this ? (global, variable, etc) */
  86   unsigned char other;    /* undefined */
  87   unsigned short shindex;  /* In which section is the symbol defined ? */
  88 };
  89
  90
  91 struct relo
  92 {
  93   unsigned int offset;   /* Address of the relocation relative to the section it refers to */
  94   unsigned int info;     /* Type of the relocation */
  95 };
  96
  97 int load_elf_file(void *, ULONG_PTR);
  98 void *kernel_lowest();
  99 void *kernel_highest();
 100 void set_base_address(void *tracker, void ** sysbaseaddr);
 101
 102 #endif /*ELFLOADER_H_*/