Sweden-Number/dlls/dbghelp/image_private.h

253 lines
9.1 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
*/
#define IMAGE_NO_MAP ((void*)-1)
struct elf_header
{
UINT8 e_ident[16]; /* Magic number and other info */
UINT16 e_type; /* Object file type */
UINT16 e_machine; /* Architecture */
UINT32 e_version; /* Object file version */
UINT64 e_entry; /* Entry point virtual address */
UINT64 e_phoff; /* Program header table file offset */
UINT64 e_shoff; /* Section header table file offset */
UINT32 e_flags; /* Processor-specific flags */
UINT16 e_ehsize; /* ELF header size in bytes */
UINT16 e_phentsize; /* Program header table entry size */
UINT16 e_phnum; /* Program header table entry count */
UINT16 e_shentsize; /* Section header table entry size */
UINT16 e_shnum; /* Section header table entry count */
UINT16 e_shstrndx; /* Section header string table index */
};
struct elf_section_header
{
UINT32 sh_name; /* Section name (string tbl index) */
UINT32 sh_type; /* Section type */
UINT64 sh_flags; /* Section flags */
UINT64 sh_addr; /* Section virtual addr at execution */
UINT64 sh_offset; /* Section file offset */
UINT64 sh_size; /* Section size in bytes */
UINT32 sh_link; /* Link to another section */
UINT32 sh_info; /* Additional section information */
UINT64 sh_addralign; /* Section alignment */
UINT64 sh_entsize; /* Entry size if section holds table */
};
struct macho_load_command
{
UINT32 cmd; /* type of load command */
UINT32 cmdsize; /* total size of command in bytes */
};
struct macho_uuid_command
{
UINT32 cmd; /* LC_UUID */
UINT32 cmdsize;
UINT8 uuid[16];
};
struct macho_section
{
char sectname[16]; /* name of this section */
char segname[16]; /* segment this section goes in */
UINT64 addr; /* memory address of this section */
UINT64 size; /* size in bytes of this section */
UINT32 offset; /* file offset of this section */
UINT32 align; /* section alignment (power of 2) */
UINT32 reloff; /* file offset of relocation entries */
UINT32 nreloc; /* number of relocation entries */
UINT32 flags; /* flags (section type and attributes)*/
UINT32 reserved1; /* reserved (for offset or index) */
UINT32 reserved2; /* reserved (for count or sizeof) */
UINT32 reserved3; /* reserved */
};
struct macho_section32
{
char sectname[16]; /* name of this section */
char segname[16]; /* segment this section goes in */
UINT32 addr; /* memory address of this section */
UINT32 size; /* size in bytes of this section */
UINT32 offset; /* file offset of this section */
UINT32 align; /* section alignment (power of 2) */
UINT32 reloff; /* file offset of relocation entries */
UINT32 nreloc; /* number of relocation entries */
UINT32 flags; /* flags (section type and attributes)*/
UINT32 reserved1; /* reserved (for offset or index) */
UINT32 reserved2; /* reserved (for count or sizeof) */
};
/* 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;
const struct image_file_map_ops *ops;
unsigned addr_size; /* either 16 (not used), 32 or 64 */
struct image_file_map* alternate; /* another file linked to this one */
union
{
struct elf_file_map
{
size_t elf_size;
size_t elf_start;
HANDLE handle;
const char* shstrtab;
char* target_copy;
struct elf_header elfhdr;
struct
{
struct elf_section_header shdr;
const char* mapped;
}* sect;
} elf;
struct macho_file_map
{
size_t segs_size;
size_t segs_start;
HANDLE handle;
struct image_file_map* dsym; /* the debug symbols file associated with this one */
size_t header_size; /* size of real header in file */
size_t commands_size;
unsigned int commands_count;
const struct macho_load_command* load_commands;
const struct macho_uuid_command* uuid;
/* The offset in the file which is this architecture. mach_header was
* read from arch_offset. */
unsigned arch_offset;
int num_sections;
struct
{
struct macho_section section;
const char* mapped;
unsigned int ignored : 1;
}* sect;
} macho;
struct pe_file_map
{
HANDLE hMap;
IMAGE_FILE_HEADER file_header;
union
{
IMAGE_OPTIONAL_HEADER32 header32;
IMAGE_OPTIONAL_HEADER64 header64;
} opt;
BOOL builtin;
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_PTR sidx;
};
struct stab_nlist
{
unsigned n_strx;
unsigned char n_type;
char n_other;
short n_desc;
unsigned n_value;
};
struct macho64_nlist
{
unsigned n_strx;
unsigned char n_type;
char n_other;
short n_desc;
UINT64 n_value;
};
BOOL image_check_alternate(struct image_file_map* fmap, const struct module* module) DECLSPEC_HIDDEN;
struct image_file_map* image_load_debugaltlink(struct image_file_map* fmap, struct module* module) DECLSPEC_HIDDEN;
BOOL elf_map_handle(HANDLE handle, struct image_file_map* fmap) DECLSPEC_HIDDEN;
BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt) DECLSPEC_HIDDEN;
struct image_file_map_ops
{
const char* (*map_section)(struct image_section_map* ism);
void (*unmap_section)(struct image_section_map* ism);
BOOL (*find_section)(struct image_file_map* fmap, const char* name, struct image_section_map* ism);
DWORD_PTR (*get_map_rva)(const struct image_section_map* ism);
unsigned (*get_map_size)(const struct image_section_map* ism);
void (*unmap_file)(struct image_file_map *fmap);
};
static inline BOOL image_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism)
{
while (fmap)
{
if (fmap->ops->find_section(fmap, name, ism)) return TRUE;
fmap = fmap->alternate;
}
ism->fmap = NULL;
ism->sidx = -1;
return FALSE;
}
static inline void image_unmap_file(struct image_file_map* fmap)
{
while (fmap)
{
fmap->ops->unmap_file(fmap);
fmap = fmap->alternate;
}
}
static inline const char* image_map_section(struct image_section_map* ism)
{
return ism->fmap ? ism->fmap->ops->map_section(ism) : NULL;
}
static inline void image_unmap_section(struct image_section_map* ism)
{
if (ism->fmap) ism->fmap->ops->unmap_section(ism);
}
static inline DWORD_PTR image_get_map_rva(const struct image_section_map* ism)
{
return ism->fmap ? ism->fmap->ops->get_map_rva(ism) : 0;
}
static inline unsigned image_get_map_size(const struct image_section_map* ism)
{
return ism->fmap ? ism->fmap->ops->get_map_size(ism) : 0;
}