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authorHenrik Nord <[email protected]>2014-03-21 16:37:11 +0100
committerHenrik Nord <[email protected]>2014-03-21 16:37:26 +0100
commit9d46875b53ffb21bc55aec4a2c76472133ea5d1c (patch)
tree2e0fa6e8829213470acc239b8885c3a79ced63f0 /lib/hipe/llvm/elf32_format.hrl
parentbbe92ec2c359373205149dabc61ef0d50784760f (diff)
parentb326df0d935d221574abf58d5e2a3efddd020278 (diff)
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Merge branch 'yiannist/hipe-llvm-backend'
* yiannist/hipe-llvm-backend: Support the LLVM backend in HiPE Implement the LLVM backend Extend RTL API to support the LLVM backend Add support for llvm unique symbols in hipe_gensym Add a BIF that only returns the atom ok Move some common code in hipe_pack_constants Add better specs in hipe_pack_constants and cleanup OTP-11801
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+%% -*- erlang-indent-level: 2 -*-
+
+%%% @copyright 2011-2014 Yiannis Tsiouris <[email protected]>,
+%%% Chris Stavrakakis <[email protected]>
+%%% @author Yiannis Tsiouris <[email protected]>
+%%% [http://www.softlab.ntua.gr/~gtsiour/]
+
+%%% @doc This header file contains very very useful macros for handling
+%%% various segments of an ELF-32 formated object file, such as sizes,
+%%% offsets and predefined constants. For further information about
+%%% each field take a quick look at
+%%% "[http://www.sco.com/developers/gabi/latest/contents.html]"
+%%% that contain the current HP/Intel definition of the ELF object
+%%% file format.
+
+%%------------------------------------------------------------------------------
+%% ELF-32 Data Types (in bytes)
+%%------------------------------------------------------------------------------
+-define(ELF_ADDR_SIZE, 4).
+-define(ELF_OFF_SIZE, 4).
+-define(ELF_HALF_SIZE, 2).
+-define(ELF_WORD_SIZE, 4).
+-define(ELF_SWORD_SIZE, 4).
+-define(ELF_XWORD_SIZE, ?ELF_WORD_SIZE). % for compatibility
+-define(ELF_SXWORD_SIZE, ?ELF_WORD_SIZE).
+-define(ELF_UNSIGNED_CHAR_SIZE, 1).
+
+%%------------------------------------------------------------------------------
+%% ELF-32 Symbol Table Entries
+%%------------------------------------------------------------------------------
+%% Precomputed offset for Symbol Table entries in SymTab binary (needed because
+%% of the different offsets in 32 and 64 bit formats).
+-define(ST_NAME_OFFSET, 0).
+-define(ST_VALUE_OFFSET, (?ST_NAME_OFFSET + ?ST_NAME_SIZE) ).
+-define(ST_SIZE_OFFSET, (?ST_VALUE_OFFSET + ?ST_VALUE_SIZE) ).
+-define(ST_INFO_OFFSET, (?ST_SIZE_OFFSET + ?ST_SIZE_SIZE) ).
+-define(ST_OTHER_OFFSET, (?ST_INFO_OFFSET + ?ST_INFO_SIZE) ).
+-define(ST_SHNDX_OFFSET, (?ST_OTHER_OFFSET + ?ST_OTHER_SIZE) ).
+
+%%------------------------------------------------------------------------------
+%% ELF-64 Relocation Entries
+%%------------------------------------------------------------------------------
+%% Useful macros to extract information from r_info field
+-define(ELF_R_SYM(I), (I bsr 8) ).
+-define(ELF_R_TYPE(I), (I band 16#ff) ).
+-define(ELF_R_INFO(S, T), ((S bsl 8) + (T band 16#ff)) ).
+
+%%------------------------------------------------------------------------------
+%% ELF-64 Program Header Table
+%%------------------------------------------------------------------------------
+%% Offsets of various fields in a Program Header Table entry binary.
+-define(P_TYPE_OFFSET, 0).
+-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_FLAGS_OFFSET, (?P_TYPE_OFFSET + ?P_TYPE_SIZE) ).
+-define(P_ALIGN_OFFSET, (?P_MEMSZ_OFFSET + ?P_MEMSZ_SIZE) ).