%% -*- erlang-indent-level: 2 -*- %%% @copyright 2011-2014 Yiannis Tsiouris <gtsiour@softlab.ntua.gr>, %%% Chris Stavrakakis <hydralisk.r@gmail.com> %%% @author Yiannis Tsiouris <gtsiour@softlab.ntua.gr> %%% [http://www.softlab.ntua.gr/~gtsiour/] %%% @doc This header file contains very very useful macros for handling %%% various segments of an ELF-64 formated object file, such as sizes, %%% offsets and predefined constants. For further information about %%% each field take a quick look at %%% "[http://downloads.openwatcom.org/ftp/devel/docs/elf-64-gen.pdf]" %%% that contain the current HP/Intel definition of the ELF object %%% file format. %%------------------------------------------------------------------------------ %% ELF-64 Data Types (in bytes) %%------------------------------------------------------------------------------ -define(ELF_ADDR_SIZE, 8). -define(ELF_OFF_SIZE, 8). -define(ELF_HALF_SIZE, 2). -define(ELF_WORD_SIZE, 4). -define(ELF_SWORD_SIZE, 4). -define(ELF_XWORD_SIZE, 8). -define(ELF_SXWORD_SIZE, 8). -define(ELF_UNSIGNED_CHAR_SIZE, 1). %%------------------------------------------------------------------------------ %% ELF-64 Symbol Table Entries %%------------------------------------------------------------------------------ %% Precomputed offset for Symbol Table entries in SymTab binary -define(ST_NAME_OFFSET, 0). -define(ST_INFO_OFFSET, (?ST_NAME_OFFSET + ?ST_NAME_SIZE) ). -define(ST_OTHER_OFFSET, (?ST_INFO_OFFSET + ?ST_INFO_SIZE) ). -define(ST_SHNDX_OFFSET, (?ST_OTHER_OFFSET + ?ST_OTHER_SIZE) ). -define(ST_VALUE_OFFSET, (?ST_SHNDX_OFFSET + ?ST_SHNDX_SIZE) ). -define(ST_SIZE_OFFSET, (?ST_VALUE_OFFSET + ?ST_VALUE_SIZE) ). %%------------------------------------------------------------------------------ %% ELF-64 Relocation Entries %%------------------------------------------------------------------------------ %% Useful macros to extract information from r_info field -define(ELF_R_SYM(I), (I bsr 32) ). -define(ELF_R_TYPE(I), (I band 16#ffffffff) ). -define(ELF_R_INFO(S, T), ((S bsl 32) + (T band 16#ffffffff)) ). %%------------------------------------------------------------------------------ %% ELF-64 Program Header Table %%------------------------------------------------------------------------------ %% Offsets of various fields in a Program Header Table entry binary. -define(P_TYPE_OFFSET, 0). -define(P_FLAGS_OFFSET, (?P_TYPE_OFFSET + ?P_TYPE_SIZE) ). -define(P_OFFSET_OFFSET, (?P_FLAGS_OFFSET + ?P_FLAGS_SIZE) ). -define(P_VADDR_OFFSET, (?P_OFFSET_OFFSET + ?P_OFFSET_SIZE) ). -define(P_PADDR_OFFSET, (?P_VADDR_OFFSET + ?P_VADDR_SIZE) ). -define(P_FILESZ_OFFSET, (?P_PVADDR_OFFSET + ?P_PVADDR_SIZE) ). -define(P_MEMSZ_OFFSET, (?P_FILESZ_OFFSET + ?P_FILESZ_SIZE) ). -define(P_ALIGN_OFFSET, (?P_MEMSZ_OFFSET + ?P_MEMSZ_SIZE) ).