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/* Copyright (C) 2021 Free Software Foundation, Inc.
Contributed by Oracle.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef _Elf_h_
#define _Elf_h_
#include <string.h>
#include "ansidecl.h"
#include "bfd.h"
#include "elf/common.h"
#include "elf/internal.h"
#include "Data_window.h"
#include "Emsg.h"
class Symbol;
class DbeFile;
template <class ITEM> class Vector;
template <typename Key_t, typename Value_t> class Map;
#define GELF_R_SYM(info) ((info)>>32)
#define GELF_ST_TYPE(info) ((info) & 0xf)
#define GELF_ST_BIND(info) ((info) >> 4)
#define GELF_R_TYPE(info) ((((uint64_t)(info))<<56)>>56)
#define SHF_SUNW_ABSENT 0x00200000 /* section data not present */
// Ancillary values.
#define ANC_SUNW_NULL 0
#define ANC_SUNW_CHECKSUM 1 /* elf checksum */
#define ANC_SUNW_MEMBER 2 /* name of ancillary group object */
#define ANC_SUNW_NUM 3
typedef struct S_Elf64_Dyn Elf64_Dyn;
typedef struct S_Elf64_Ancillary Elf64_Ancillary;
typedef struct
{
void *d_buf;
uint64_t d_flags;
uint64_t d_size;
uint64_t d_off; // offset into section
uint64_t d_align; // alignment in section
} Elf_Data;
class Elf : public DbeMessages, public Data_window
{
public:
enum Elf_status
{
ELF_ERR_NONE,
ELF_ERR_CANT_OPEN_FILE,
ELF_ERR_CANT_MMAP,
ELF_ERR_BIG_FILE,
ELF_ERR_BAD_ELF_FORMAT,
ELF_ERR_READ_FILE
};
Elf (char *_fname);
~Elf ();
static void elf_init ();
static unsigned elf_version (unsigned ver);
static Elf *elf_begin (char *_fname, Elf_status *stp = NULL);
unsigned int elf_get_sec_num (const char *sec_name);
char *get_sec_name (unsigned int sec);
Elf_Internal_Ehdr *elf_getehdr ();
Elf_Internal_Phdr *get_phdr (unsigned int ndx);
Elf_Internal_Shdr *get_shdr (unsigned int ndx);
Elf64_Dyn *elf_getdyn (Elf_Internal_Phdr *phdr, unsigned int ndx, Elf64_Dyn *pdyn);
Elf_Data *elf_getdata (unsigned int sec);
int64_t elf_checksum ();
uint64_t get_baseAddr();
char *elf_strptr (unsigned int sec, uint64_t off);
Elf_Internal_Sym *elf_getsym (Elf_Data *edta, unsigned int ndx, Elf_Internal_Sym *dst);
Elf_Internal_Rela *elf_getrel (Elf_Data *edta, unsigned int ndx, Elf_Internal_Rela *dst);
Elf_Internal_Rela *elf_getrela (Elf_Data *edta, unsigned int ndx, Elf_Internal_Rela *dst);
Elf64_Ancillary *elf_getancillary (Elf_Data *edta, unsigned int ndx, Elf64_Ancillary *dst);
Elf *find_ancillary_files (char *lo_name); // read the .gnu_debuglink and .SUNW_ancillary seections
char *get_location ();
char *dump ();
void dump_elf_sec ();
static inline int64_t
normalize_checksum (int64_t chk)
{
return (chk == 0xffffffff || chk == -1) ? 0 : chk;
};
inline bool
is_Intel ()
{
return elf_datatype == ELFDATA2LSB;
};
inline int
elf_getclass ()
{
return elf_class;
};
inline int
elf_getdatatype ()
{
return elf_datatype;
};
Elf_status status;
Vector<Elf*> *ancillary_files;
Elf *gnu_debug_file;
DbeFile *dbeFile;
Map<const char*, Symbol*> *elfSymbols;
unsigned int gnuLink, analyzerInfo, SUNW_ldynsym, stab, stabStr, symtab, dynsym;
unsigned int stabIndex, stabIndexStr, stabExcl, stabExclStr, info, plt;
bool dwarf;
protected:
Elf *get_related_file (const char *lo_name, const char *nm);
int elf_class;
int elf_datatype;
Elf_Internal_Ehdr *ehdrp;
Elf_Data **data;
bfd *abfd;
static int bfd_status;
};
class ElfReloc
{
public:
struct Sreloc
{
long long offset;
long long value;
int stt_type;
};
static ElfReloc *get_elf_reloc (Elf *elf, char *sec_name, ElfReloc *rlc);
ElfReloc (Elf *_elf);
~ElfReloc ();
long long get_reloc_addr (long long offset);
void dump ();
void dump_rela_debug_sec (int sec);
private:
Elf *elf;
Vector<Sreloc *> *reloc;
int cur_reloc_ind;
};
#endif
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