| /* obj-aout.h, a.out object file format for gas, the assembler. |
| Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 2000, |
| 2002, 2003, 2005 Free Software Foundation, Inc. |
| |
| This file is part of GAS, the GNU Assembler. |
| |
| GAS 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 2, |
| or (at your option) any later version. |
| |
| GAS 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 GAS; see the file COPYING. If not, write to the Free |
| Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 02110-1301, USA. */ |
| |
| /* Tag to validate a.out object file format processing */ |
| #define OBJ_AOUT 1 |
| |
| #include "targ-cpu.h" |
| |
| #ifdef BFD_ASSEMBLER |
| |
| #include "bfd/libaout.h" |
| |
| #define OUTPUT_FLAVOR bfd_target_aout_flavour |
| |
| #else /* ! BFD_ASSEMBLER */ |
| |
| #ifndef VMS |
| #include "aout_gnu.h" /* Needed to define struct nlist. Sigh. */ |
| #else |
| #include "a_out.h" |
| #endif |
| |
| #ifndef AOUT_MACHTYPE |
| #define AOUT_MACHTYPE 0 |
| #endif /* AOUT_MACHTYPE */ |
| |
| extern const short seg_N_TYPE[]; |
| extern const segT N_TYPE_seg[]; |
| |
| #ifndef DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE |
| #define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE (OMAGIC) |
| #endif /* DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE */ |
| |
| #endif /* ! BFD_ASSEMBLER */ |
| |
| extern const pseudo_typeS aout_pseudo_table[]; |
| |
| #ifndef obj_pop_insert |
| #define obj_pop_insert() pop_insert (aout_pseudo_table) |
| #endif |
| |
| /* Symbol table entry data type. */ |
| |
| typedef struct nlist obj_symbol_type; /* Symbol table entry. */ |
| |
| /* Symbol table macros and constants */ |
| |
| #ifdef BFD_ASSEMBLER |
| |
| #define S_SET_OTHER(S,V) \ |
| (aout_symbol (symbol_get_bfdsym (S))->other = (V)) |
| #define S_SET_TYPE(S,T) \ |
| (aout_symbol (symbol_get_bfdsym (S))->type = (T)) |
| #define S_SET_DESC(S,D) \ |
| (aout_symbol (symbol_get_bfdsym (S))->desc = (D)) |
| #define S_GET_OTHER(S) \ |
| (aout_symbol (symbol_get_bfdsym (S))->other) |
| #define S_GET_TYPE(S) \ |
| (aout_symbol (symbol_get_bfdsym (S))->type) |
| #define S_GET_DESC(S) \ |
| (aout_symbol (symbol_get_bfdsym (S))->desc) |
| |
| asection *text_section, *data_section, *bss_section; |
| |
| #define obj_frob_symbol(S,PUNT) obj_aout_frob_symbol (S, &PUNT) |
| #define obj_frob_file_before_fix() obj_aout_frob_file_before_fix () |
| |
| extern void obj_aout_frob_symbol (symbolS *, int *); |
| extern void obj_aout_frob_file_before_fix (void); |
| |
| #define obj_sec_sym_ok_for_reloc(SEC) 1 |
| |
| #else |
| |
| /* We use the sy_obj field to record whether a symbol is weak. */ |
| #define OBJ_SYMFIELD_TYPE char |
| |
| /* Macros to extract information from a symbol table entry. |
| This syntactic indirection allows independence regarding a.out or coff. |
| The argument (s) of all these macros is a pointer to a symbol table entry. */ |
| |
| /* True if the symbol is external. */ |
| #define S_IS_EXTERNAL(s) ((s)->sy_symbol.n_type & N_EXT) |
| |
| /* True if symbol has been defined, ie is in N_{TEXT,DATA,BSS,ABS} or N_EXT. */ |
| #define S_IS_DEFINED(s) \ |
| (S_GET_TYPE (s) != N_UNDF || S_GET_DESC (s) != 0) |
| |
| #define S_IS_COMMON(s) \ |
| (S_GET_TYPE (s) == N_UNDF && S_GET_VALUE (s) != 0) |
| |
| /* Return true for symbols that should not be reduced to section |
| symbols or eliminated from expressions, because they may be |
| overridden by the linker. */ |
| #define S_FORCE_RELOC(s, strict) \ |
| (!SEG_NORMAL (S_GET_SEGMENT (s))) |
| |
| #define S_IS_REGISTER(s) ((s)->sy_symbol.n_type == N_REGISTER) |
| |
| /* True if a debug special symbol entry. */ |
| #define S_IS_DEBUG(s) ((s)->sy_symbol.n_type & N_STAB) |
| /* True if a symbol is local symbol name. */ |
| #define S_IS_LOCAL(s) \ |
| ((S_GET_NAME (s) \ |
| && !S_IS_DEBUG (s) \ |
| && (strchr (S_GET_NAME (s), '\001') != NULL \ |
| || strchr (S_GET_NAME (s), '\002') != NULL \ |
| || (S_LOCAL_NAME(s) && !flag_keep_locals))) \ |
| || (flag_strip_local_absolute \ |
| && ! S_IS_EXTERNAL(s) \ |
| && S_GET_SEGMENT (s) == absolute_section)) |
| /* True if the symbol has been generated because of a .stabd directive. */ |
| #define S_IS_STABD(s) (S_GET_NAME(s) == NULL) |
| |
| /* Accessors. */ |
| /* The name of the symbol. */ |
| #define S_GET_NAME(s) ((s)->sy_symbol.n_un.n_name) |
| /* The pointer to the string table. */ |
| #define S_GET_OFFSET(s) ((s)->sy_symbol.n_un.n_strx) |
| /* The type of the symbol. */ |
| #define S_GET_TYPE(s) ((s)->sy_symbol.n_type & N_TYPE) |
| /* The numeric value of the segment. */ |
| #define S_GET_SEGMENT(s) (N_TYPE_seg[S_GET_TYPE(s)]) |
| /* The n_other expression value. */ |
| #define S_GET_OTHER(s) ((s)->sy_symbol.n_other) |
| /* The n_desc expression value. */ |
| #define S_GET_DESC(s) ((s)->sy_symbol.n_desc) |
| /* Whether the symbol is weak. */ |
| #define S_GET_WEAK(s) ((s)->sy_obj) |
| |
| /* Modifiers. */ |
| /* Assume that a symbol cannot be simultaneously in more than on segment. */ |
| /* Set segment. */ |
| #define S_SET_SEGMENT(s,seg) ((s)->sy_symbol.n_type &= ~N_TYPE,(s)->sy_symbol.n_type |= SEGMENT_TO_SYMBOL_TYPE (seg)) |
| /* The symbol is external. */ |
| #define S_SET_EXTERNAL(s) ((s)->sy_symbol.n_type |= N_EXT) |
| /* The symbol is not external. */ |
| #define S_CLEAR_EXTERNAL(s) ((s)->sy_symbol.n_type &= ~N_EXT) |
| /* Set the name of the symbol. */ |
| #define S_SET_NAME(s,v) ((s)->sy_symbol.n_un.n_name = (v)) |
| /* Set the offset in the string table. */ |
| #define S_SET_OFFSET(s,v) ((s)->sy_symbol.n_un.n_strx = (v)) |
| /* Set the n_type field. */ |
| #define S_SET_TYPE(s,t) ((s)->sy_symbol.n_type = (t)) |
| /* Set the n_other expression value. */ |
| #define S_SET_OTHER(s,v) ((s)->sy_symbol.n_other = (v)) |
| /* Set the n_desc expression value. */ |
| #define S_SET_DESC(s,v) ((s)->sy_symbol.n_desc = (v)) |
| /* Mark the symbol as weak. This causes n_type to be adjusted when |
| the symbol is written out. */ |
| #define S_SET_WEAK(s) ((s)->sy_obj = 1) |
| |
| /* File header macro and type definition. */ |
| |
| #define H_GET_FILE_SIZE(h) (H_GET_HEADER_SIZE (h) \ |
| + H_GET_TEXT_SIZE (h) \ |
| + H_GET_DATA_SIZE (h) \ |
| + H_GET_TEXT_RELOCATION_SIZE (h) \ |
| + H_GET_DATA_RELOCATION_SIZE (h) \ |
| + H_GET_LINENO_SIZE (h) \ |
| + H_GET_SYMBOL_TABLE_SIZE (h) \ |
| + H_GET_STRING_SIZE (h)) |
| |
| #define H_GET_HEADER_SIZE(h) (EXEC_BYTES_SIZE) |
| #define H_GET_TEXT_SIZE(h) ((h)->header.a_text) |
| #define H_GET_DATA_SIZE(h) ((h)->header.a_data) |
| #define H_GET_BSS_SIZE(h) ((h)->header.a_bss) |
| #define H_GET_TEXT_RELOCATION_SIZE(h) ((h)->header.a_trsize) |
| #define H_GET_DATA_RELOCATION_SIZE(h) ((h)->header.a_drsize) |
| #define H_GET_SYMBOL_TABLE_SIZE(h) ((h)->header.a_syms) |
| #define H_GET_ENTRY_POINT(h) ((h)->header.a_entry) |
| #define H_GET_STRING_SIZE(h) ((h)->string_table_size) |
| #define H_GET_LINENO_SIZE(h) (0) |
| |
| #define H_GET_DYNAMIC(h) ((h)->header.a_info >> 31) |
| #define H_GET_VERSION(h) (((h)->header.a_info >> 24) & 0x7f) |
| #define H_GET_MACHTYPE(h) (((h)->header.a_info >> 16) & 0xff) |
| #define H_GET_MAGIC_NUMBER(h) ((h)->header.a_info & 0xffff) |
| |
| #define H_SET_DYNAMIC(h,v) ((h)->header.a_info = (((v) << 31) \ |
| | (H_GET_VERSION (h) << 24) \ |
| | (H_GET_MACHTYPE (h) << 16) \ |
| | (H_GET_MAGIC_NUMBER (h)))) |
| |
| #define H_SET_VERSION(h,v) ((h)->header.a_info = ((H_GET_DYNAMIC (h) << 31) \ |
| | ((v) << 24) \ |
| | (H_GET_MACHTYPE (h) << 16) \ |
| | (H_GET_MAGIC_NUMBER (h)))) |
| |
| #define H_SET_MACHTYPE(h,v) ((h)->header.a_info = ((H_GET_DYNAMIC (h) << 31) \ |
| | (H_GET_VERSION (h) << 24) \ |
| | ((v) << 16) \ |
| | (H_GET_MAGIC_NUMBER (h)))) |
| |
| #define H_SET_MAGIC_NUMBER(h,v) ((h)->header.a_info = ((H_GET_DYNAMIC (h) << 31) \ |
| | (H_GET_VERSION (h) << 24) \ |
| | (H_GET_MACHTYPE (h) << 16) \ |
| | ((v)))) |
| |
| #define H_SET_TEXT_SIZE(h,v) ((h)->header.a_text = md_section_align (SEG_TEXT, (v))) |
| #define H_SET_DATA_SIZE(h,v) ((h)->header.a_data = md_section_align (SEG_DATA, (v))) |
| #define H_SET_BSS_SIZE(h,v) ((h)->header.a_bss = md_section_align (SEG_BSS, (v))) |
| |
| #define H_SET_RELOCATION_SIZE(h,t,d) (H_SET_TEXT_RELOCATION_SIZE ((h),(t)),\ |
| H_SET_DATA_RELOCATION_SIZE ((h),(d))) |
| |
| #define H_SET_TEXT_RELOCATION_SIZE(h,v) ((h)->header.a_trsize = (v)) |
| #define H_SET_DATA_RELOCATION_SIZE(h,v) ((h)->header.a_drsize = (v)) |
| #define H_SET_SYMBOL_TABLE_SIZE(h,v) ((h)->header.a_syms = (v) * 12) |
| |
| #define H_SET_ENTRY_POINT(h,v) ((h)->header.a_entry = (v)) |
| #define H_SET_STRING_SIZE(h,v) ((h)->string_table_size = (v)) |
| |
| typedef struct |
| { |
| struct exec header; /* a.out header. */ |
| long string_table_size; /* names + '\0' + sizeof (int). */ |
| } |
| |
| object_headers; |
| |
| /* Line numbering stuff. */ |
| #define OBJ_EMIT_LINENO(a, b, c) {;} |
| |
| struct fix; |
| extern void tc_aout_fix_to_chars (char *, struct fix *, relax_addressT); |
| |
| #endif |
| |
| #define obj_read_begin_hook() {;} |
| #define obj_symbol_new_hook(s) {;} |
| |
| #define EMIT_SECTION_SYMBOLS 0 |
| |
| #define AOUT_STABS |