headers/private/kernel/elf_priv.h

   1 /*
   2  * Copyright 2002-2007, Haiku Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT license.
   4  *
   5  * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
   6  * Distributed under the terms of the NewOS License.
   7  */
   8 #ifndef _KERNEL_ELF_PRIV_H
   9 #define _KERNEL_ELF_PRIV_H
  10
  11
  12 #include <elf_private.h>
  13
  14 #include <image.h>
  15
  16
  17 struct elf_version_info;
  18
  19
  20 typedef struct elf_region {
  21         area_id         id;
  22         addr_t          start;
  23         addr_t          size;
  24         long            delta;
  25 } elf_region;
  26
  27 struct elf_image_info {
  28         struct elf_image_info* next;            // next image in the hash
  29         char*                   name;
  30         image_id                id;
  31         int32                   ref_count;
  32         struct vnode*   vnode;
  33         elf_region              text_region;
  34         elf_region              data_region;
  35         addr_t                  dynamic_section;        // pointer to the dynamic section
  36         struct elf_linked_image* linked_images;
  37
  38         bool                    symbolic;
  39
  40         elf_ehdr*               elf_header;
  41
  42         // pointer to symbol participation data structures
  43         char*                   needed;
  44         uint32*                 symhash;
  45         elf_sym*                syms;
  46         char*                   strtab;
  47         elf_rel*                rel;
  48         int                             rel_len;
  49         elf_rela*               rela;
  50         int                             rela_len;
  51         elf_rel*                pltrel;
  52         int                             pltrel_len;
  53         int                             pltrel_type;
  54
  55         elf_sym*                debug_symbols;
  56         uint32                  num_debug_symbols;
  57         const char*             debug_string_table;
  58
  59         // versioning related structures
  60         uint32                  num_version_definitions;
  61         elf_verdef*             version_definitions;
  62         uint32                  num_needed_versions;
  63         elf_verneed*    needed_versions;
  64         elf_versym*             symbol_versions;
  65         struct elf_version_info* versions;
  66         uint32                  num_versions;
  67 };
  68
  69
  70 #define STRING(image, offset) ((char*)(&(image)->strtab[(offset)]))
  71 #define SYMNAME(image, sym) STRING(image, (sym)->st_name)
  72 #define SYMBOL(image, num) (&(image)->syms[num])
  73 #define HASHTABSIZE(image) ((image)->symhash[0])
  74 #define HASHBUCKETS(image) ((unsigned int*)&(image)->symhash[2])
  75 #define HASHCHAINS(image) ((unsigned int*)&(image)->symhash[2+HASHTABSIZE(image)])
  76
  77
  78 #ifdef __cplusplus
  79 extern "C" {
  80 #endif
  81
  82 extern status_t elf_resolve_symbol(struct elf_image_info* image,
  83         elf_sym* symbol, struct elf_image_info* sharedImage,
  84         addr_t* _symbolAddress);
  85
  86 #ifdef __cplusplus
  87 }
  88 #endif
  89
  90
  91 #endif  /* _KERNEL_ELF_PRIV_H */