86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
#ifndef __EFMT_H
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#define __EFMT_H
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#ifndef __PACKED__
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#define __PACKED__ __attribute__((packed))
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#endif
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typedef struct
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{
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unsigned long magic __PACKED__;
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unsigned char bitness __PACKED__;
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unsigned char endian __PACKED__;
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unsigned char elf_ver_1 __PACKED__;
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unsigned char res[9] __PACKED__;
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unsigned short file_type __PACKED__;
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unsigned short machine __PACKED__;
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unsigned long elf_ver_2 __PACKED__;
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unsigned long entry_pt __PACKED__;
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unsigned long phtab_offset __PACKED__;
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unsigned long shtab_offset __PACKED__;
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unsigned long flags __PACKED__;
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unsigned short file_hdr_size __PACKED__;
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unsigned short phtab_ent_size __PACKED__;
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unsigned short num_phtab_ents __PACKED__;
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unsigned short shtab_ent_size __PACKED__;
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unsigned short num_sects __PACKED__;
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unsigned short shstrtab_index __PACKED__;
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} elf_file_t;
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typedef struct
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{
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unsigned long sect_name __PACKED__;
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unsigned long type __PACKED__;
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unsigned long flags __PACKED__;
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unsigned long virt_adr __PACKED__;
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unsigned long offset __PACKED__;
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unsigned long size __PACKED__;
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unsigned long link __PACKED__;
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unsigned long info __PACKED__;
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unsigned long align __PACKED__;
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unsigned long ent_size __PACKED__;
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} elf_sect_t;
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typedef struct
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{
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unsigned long adr __PACKED__;
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unsigned char type __PACKED__;
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unsigned long symtab_index:24 __PACKED__;
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unsigned long addend __PACKED__;
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} elf_reloc_t;
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typedef struct
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{
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unsigned long name __PACKED__;
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unsigned long value __PACKED__;
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unsigned long size __PACKED__;
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unsigned type:4 __PACKED__;
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unsigned binding:4 __PACKED__;
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unsigned char zero __PACKED__;
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unsigned short section __PACKED__;
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} elf_sym_t;
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typedef struct
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{
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unsigned char * file, * sects,*bss,*symtab;
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char * strtab;
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unsigned long bss_sect_num,entry;
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} exe_file_t;
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int get_elf_section_name(exe_file_t * f,unsigned short sect_num,char * namebuf);
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int get_elf_section_addr(exe_file_t * f,unsigned short sect_num,unsigned long * adr);
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int get_elf_symbol_addr(exe_file_t * f,unsigned long i,
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unsigned long * sym_val,unsigned short sect_num,
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int (* lookup_fn)(char * symname,unsigned long * val));
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int do_elf_relocation(exe_file_t * f,elf_reloc_t * reloc,
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unsigned short sect_num,unsigned long symtab_sect_num,
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int (* sym_lookup_fn)(char * symname,unsigned long * val),int ignore_ext);
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int get_elf_section_index(exe_file_t * f,char * sect_name,unsigned long * i);
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int elf_load_from_mem(exe_file_t * f);
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int relocate_elf_file(exe_file_t * f,
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int (* sym_lookup_fn)(char * symname,unsigned long * val),int ignore_ext);
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int get_elf_symbol_value(exe_file_t * f,char * symname,unsigned long * symval);
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#endif
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