wine/dlls/dbghelp/image_private.h
2010-08-30 15:38:56 +02:00

183 lines
5.6 KiB
C

/*
* File elf_private.h - definitions for processing of ELF files
*
* Copyright (C) 1996, Eric Youngdale.
* 1999-2007 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_ELF_H
# include <elf.h>
#endif
#ifdef HAVE_SYS_ELF32_H
# include <sys/elf32.h>
#endif
#ifdef HAVE_SYS_EXEC_ELF_H
# include <sys/exec_elf.h>
#endif
#if !defined(DT_NUM)
# if defined(DT_COUNT)
# define DT_NUM DT_COUNT
# else
/* this seems to be a satisfactory value on Solaris, which doesn't support this AFAICT */
# define DT_NUM 24
# endif
#endif
#ifdef HAVE_LINK_H
# include <link.h>
#endif
#ifdef HAVE_SYS_LINK_H
# include <sys/link.h>
#endif
#define IMAGE_NO_MAP ((void*)-1)
#ifdef __ELF__
#ifdef _WIN64
#define Elf_Ehdr Elf64_Ehdr
#define Elf_Shdr Elf64_Shdr
#define Elf_Phdr Elf64_Phdr
#define Elf_Dyn Elf64_Dyn
#define Elf_Sym Elf64_Sym
#else
#define Elf_Ehdr Elf32_Ehdr
#define Elf_Shdr Elf32_Shdr
#define Elf_Phdr Elf32_Phdr
#define Elf_Dyn Elf32_Dyn
#define Elf_Sym Elf32_Sym
#endif
#else
#ifndef SHT_NULL
#define SHT_NULL 0
#endif
#endif
/* structure holding information while handling an ELF image
* allows one by one section mapping for memory savings
*/
struct image_file_map
{
enum module_type modtype;
union
{
struct elf_file_map
{
size_t elf_size;
size_t elf_start;
int fd;
const char* shstrtab;
struct image_file_map* alternate; /* another ELF file (linked to this one) */
#ifdef __ELF__
Elf_Ehdr elfhdr;
struct
{
Elf_Shdr shdr;
const char* mapped;
}* sect;
#endif
} elf;
struct pe_file_map
{
HANDLE hMap;
IMAGE_NT_HEADERS ntheader;
unsigned full_count;
void* full_map;
struct
{
IMAGE_SECTION_HEADER shdr;
const char* mapped;
}* sect;
const char* strtable;
} pe;
} u;
};
struct image_section_map
{
struct image_file_map* fmap;
long sidx;
};
extern BOOL elf_find_section(struct image_file_map* fmap, const char* name,
unsigned sht, struct image_section_map* ism);
extern const char* elf_map_section(struct image_section_map* ism);
extern void elf_unmap_section(struct image_section_map* ism);
extern DWORD_PTR elf_get_map_rva(const struct image_section_map* ism);
extern unsigned elf_get_map_size(const struct image_section_map* ism);
extern BOOL pe_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism);
extern const char* pe_map_section(struct image_section_map* psm);
extern void pe_unmap_section(struct image_section_map* psm);
extern DWORD_PTR pe_get_map_rva(const struct image_section_map* psm);
extern unsigned pe_get_map_size(const struct image_section_map* psm);
static inline BOOL image_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism)
{
switch (fmap->modtype)
{
case DMT_ELF: return elf_find_section(fmap, name, SHT_NULL, ism);
case DMT_PE: return pe_find_section(fmap, name, ism);
default: assert(0); return FALSE;
}
}
static inline const char* image_map_section(struct image_section_map* ism)
{
if (!ism->fmap) return NULL;
switch (ism->fmap->modtype)
{
case DMT_ELF: return elf_map_section(ism);
case DMT_PE: return pe_map_section(ism);
default: assert(0); return NULL;
}
}
static inline void image_unmap_section(struct image_section_map* ism)
{
if (!ism->fmap) return;
switch (ism->fmap->modtype)
{
case DMT_ELF: elf_unmap_section(ism); break;
case DMT_PE: pe_unmap_section(ism); break;
default: assert(0); return;
}
}
static inline DWORD_PTR image_get_map_rva(const struct image_section_map* ism)
{
if (!ism->fmap) return 0;
switch (ism->fmap->modtype)
{
case DMT_ELF: return elf_get_map_rva(ism);
case DMT_PE: return pe_get_map_rva(ism);
default: assert(0); return 0;
}
}
static inline unsigned image_get_map_size(const struct image_section_map* ism)
{
if (!ism->fmap) return 0;
switch (ism->fmap->modtype)
{
case DMT_ELF: return elf_get_map_size(ism);
case DMT_PE: return pe_get_map_size(ism);
default: assert(0); return 0;
}
}