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- /* obj-aout.h, a.out object file format for gas, the assembler.
- Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996
- 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 */
-
- /* SYMBOL TABLE */
- /* 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((S)->bsym)->other = (V))
- #define S_SET_TYPE(S,T) (aout_symbol((S)->bsym)->type = (T))
- #define S_SET_DESC(S,D) (aout_symbol((S)->bsym)->desc = (D))
- #define S_GET_OTHER(S) (aout_symbol((S)->bsym)->other)
- #define S_GET_TYPE(S) (aout_symbol((S)->bsym)->type)
- #define S_GET_DESC(S) (aout_symbol((S)->bsym)->desc)
-
- asection *text_section, *data_section, *bss_section;
-
- #define obj_frob_symbol(S,PUNT) obj_aout_frob_symbol (S, &PUNT)
- #define obj_frob_file() obj_aout_frob_file ()
- extern void obj_aout_frob_symbol PARAMS ((struct symbol *, int *));
- extern void obj_aout_frob_file PARAMS ((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 syntaxic 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_OTHER(s) != 0) || (S_GET_DESC(s) != 0))
-
- #define S_IS_COMMON(s) \
- (S_GET_TYPE (s) == N_UNDF && S_GET_VALUE (s) != 0)
-
- #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)))
- /* True if a symbol is not defined in this file */
- #define S_IS_EXTERN(s) ((s)->sy_symbol.n_type & N_EXT)
- /* True if the symbol has been generated because of a .stabd directive */
- #define S_IS_STABD(s) (S_GET_NAME(s) == (char *)0)
-
- /* 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_SYMBOL_TABLE_SIZE(h) \
- + H_GET_TEXT_RELOCATION_SIZE(h) \
- + H_GET_DATA_RELOCATION_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;
- void tc_aout_fix_to_chars PARAMS ((char *where, struct fix *fixP, relax_addressT segment_address));
-
- #endif
-
- #define obj_symbol_new_hook(s) {;}
-
- #define EMIT_SECTION_SYMBOLS 0
-
- #define AOUT_STABS
-
- /* end of obj-aout.h */
-