diff options
Diffstat (limited to 'lib/hipe/llvm/elf_format.erl')
| -rw-r--r-- | lib/hipe/llvm/elf_format.erl | 70 |
1 files changed, 50 insertions, 20 deletions
diff --git a/lib/hipe/llvm/elf_format.erl b/lib/hipe/llvm/elf_format.erl index b3c5ecddab..8cf6ea6250 100644 --- a/lib/hipe/llvm/elf_format.erl +++ b/lib/hipe/llvm/elf_format.erl @@ -35,25 +35,55 @@ %% Types %%------------------------------------------------------------------------------ --export_type([elf/0]). - --type lp() :: non_neg_integer(). % landing pad --type num() :: non_neg_integer(). --type index() :: non_neg_integer(). --type start() :: non_neg_integer(). - --type tuple(X) :: {} | {X} | {X, X} | tuple(). +-export_type([elf/0 + ,addend/0 + ,bitflags/0 + ,name/0 + ,offset/0 + ,reloc_type/0 + ,shdr_type/0 + ,size/0 + ,sym_bind/0 + ,sym_type/0 + ,valueoff/0 + ]). + +-type bitflags() :: non_neg_integer(). +-type index() :: non_neg_integer(). +-type lp() :: non_neg_integer(). % landing pad +-type num() :: non_neg_integer(). +-type offset() :: non_neg_integer(). +-type size() :: non_neg_integer(). +-type start() :: non_neg_integer(). + +-type addend() :: integer() | undefined. +-type name() :: string(). +-type shdr_type() :: 'null' | 'progbits' | 'symtab' | 'strtab' | 'rela' + | 'hash' | 'dynamic' | 'note' | 'nobits' | 'rel' | 'shlib' + | 'dynsym' | {os, ?SHT_LOOS..?SHT_HIOS} + | {proc, ?SHT_LOPROC..?SHT_HIPROC}. +-type sym_bind() :: 'local' | 'global' | 'weak' | {os, ?STB_LOOS..?STB_HIOS} + | {proc, ?STB_LOPROC..?STB_HIPROC}. +-type sym_type() :: 'notype' | 'object' | 'func' | 'section' | 'file' + | {os, ?STT_LOOS..?STT_HIOS} + | {proc, ?STT_LOPROC..?STT_HIPROC}. +-type valueoff() :: offset(). + +-ifdef(BIT32). % 386 +-type reloc_type() :: '32' | 'pc32'. +-else. % X86_64 +-type reloc_type() :: '64' | 'pc32' | '32'. +-endif. %%------------------------------------------------------------------------------ %% Abstract Data Types and Accessors for ELF Structures. %%------------------------------------------------------------------------------ -record(elf, {file :: binary() - ,sec_idx :: tuple(elf_shdr()) + ,sections :: [elf_shdr()] ,sec_nam :: #{string() => elf_shdr()} - ,sym_idx :: undefined | tuple(elf_sym()) + ,symbols :: undefined | [elf_sym()] }). - -opaque elf() :: #elf{}. %% File header @@ -211,9 +241,9 @@ read(ElfBin) -> [_UndefinedSec|Sections] = extract_shdrtab(ElfBin, Header), SecNam = maps:from_list( [{Name, Sec} || Sec = #elf_shdr{name=Name} <- Sections]), - Elf0 = #elf{file=ElfBin, sec_idx=list_to_tuple(Sections), sec_nam=SecNam}, + Elf0 = #elf{file=ElfBin, sections=Sections, sec_nam=SecNam}, [_UndefinedSym|Symbols] = extract_symtab(Elf0, extract_strtab(Elf0)), - Elf0#elf{sym_idx=list_to_tuple(Symbols)}. + Elf0#elf{symbols=Symbols}. %%------------------------------------------------------------------------------ %% Functions to manipulate the ELF File Header @@ -311,8 +341,8 @@ decode_shdr_type(Proc) when ?SHT_LOPROC =< Proc, Proc =< ?SHT_HIPROC -> -spec elf_section(non_neg_integer(), elf()) -> undefined | abs | elf_shdr(). elf_section(0, #elf{}) -> undefined; elf_section(?SHN_ABS, #elf{}) -> abs; -elf_section(Index, #elf{sec_idx=SecIdx}) when Index =< tuple_size(SecIdx) -> - element(Index, SecIdx). +elf_section(Index, #elf{sections=SecIdx}) -> + lists:nth(Index, SecIdx). %% Reads the contents of a section from an object -spec section_contents(elf_shdr(), elf()) -> binary(). @@ -374,10 +404,10 @@ decode_symbol_type(Proc) when ?STT_LOPROC =< Proc, Proc =< ?STT_HIPROC -> -spec elf_symbol(0, elf()) -> undefined; (pos_integer(), elf()) -> elf_sym(). elf_symbol(0, #elf{}) -> undefined; -elf_symbol(Index, #elf{sym_idx=SymIdx}) -> element(Index, SymIdx). +elf_symbol(Index, #elf{symbols=Symbols}) -> lists:nth(Index, Symbols). -spec elf_symbols(elf()) -> [elf_sym()]. -elf_symbols(#elf{sym_idx=SymIdx}) -> tuple_to_list(SymIdx). +elf_symbols(#elf{symbols=Symbols}) -> Symbols. %%------------------------------------------------------------------------------ %% Functions to manipulate String Table @@ -418,8 +448,8 @@ bin_get_string(<<Char, Rest/binary>>) -> [Char|bin_get_string(Rest)]. extract_rela(Elf, Name) -> SecData = extract_segment_by_name(Elf, Name), [#elf_rel{offset=Offset, symbol=elf_symbol(?ELF_R_SYM(Info), Elf), - type=decode_reloc_type(?ELF_R_TYPE(Info)), - addend=read_implicit_addend(Offset, SecData)} + type=decode_reloc_type(?ELF_R_TYPE(Info)), + addend=read_implicit_addend(Offset, SecData)} || <<Offset:?bits(?R_OFFSET_SIZE)/little, Info:?bits(?R_INFO_SIZE)/little % 386 uses ".rel" >> <= extract_segment_by_name(Elf, ?REL(Name))]. @@ -436,7 +466,7 @@ read_implicit_addend(Offset, Section) -> -else. %% BIT32 extract_rela(Elf, Name) -> [#elf_rel{offset=Offset, symbol=elf_symbol(?ELF_R_SYM(Info), Elf), - type=decode_reloc_type(?ELF_R_TYPE(Info)), addend=Addend} + type=decode_reloc_type(?ELF_R_TYPE(Info)), addend=Addend} || <<Offset:?bits(?R_OFFSET_SIZE)/little, Info:?bits(?R_INFO_SIZE)/little, Addend:?bits(?R_ADDEND_SIZE)/signed-little % X86_64 uses ".rela" |