gas/config/obj-coff.h

/* coff object file format
   Copyright (C) 1989-2021 Free Software Foundation, Inc.

   This file is part of GAS.

   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 3, 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.  */

#ifndef OBJ_FORMAT_H
#define OBJ_FORMAT_H

#define OBJ_COFF 1

#include "targ-cpu.h"

/* This internal_lineno crap is to stop namespace pollution from the
   bfd internal coff headerfile.  */
#define internal_lineno bfd_internal_lineno
#include "coff/internal.h"
#undef internal_lineno

/* CPU-specific setup:  */

#ifdef TC_ARM
#include "coff/arm.h"
#ifndef TARGET_FORMAT
#define TARGET_FORMAT "coff-arm"
#endif
#endif

#ifdef TC_PPC
#include "coff/rs6000.h"
#endif

#ifdef TC_I386
#ifdef TE_PEP
#include "coff/x86_64.h"
#else
#include "coff/i386.h"
#endif

#ifndef TARGET_FORMAT
#ifdef TE_PEP
#define TARGET_FORMAT "coff-x86-64"
#else
#define TARGET_FORMAT "coff-i386"
#endif
#endif
#endif

#ifdef TC_Z80
#include "coff/z80.h"
#define TARGET_FORMAT "coff-z80"
#endif

#ifdef TC_Z8K
#include "coff/z8k.h"
#define TARGET_FORMAT "coff-z8k"
#endif

#ifdef TC_SH

#ifdef TE_PE
#define COFF_WITH_PE
#endif

#include "coff/sh.h"

#ifdef TE_PE
#define TARGET_FORMAT "pe-shl"
#else

#define TARGET_FORMAT					\
  (!target_big_endian					\
   ? (sh_small ? "coff-shl-small" : "coff-shl")		\
   : (sh_small ? "coff-sh-small" : "coff-sh"))

#endif
#endif

#ifdef TC_TIC30
#include "coff/tic30.h"
#define TARGET_FORMAT "coff-tic30"
#endif

#ifdef TC_TIC4X
#include "coff/tic4x.h"
#define TARGET_FORMAT "coff2-tic4x"
#endif

#ifdef TC_TIC54X
#include "coff/tic54x.h"
#define TARGET_FORMAT "coff1-c54x"
#endif

#ifdef TC_MCORE
#include "coff/mcore.h"
#ifndef TARGET_FORMAT
#define TARGET_FORMAT "pe-mcore"
#endif
#endif

#ifdef TE_PE
#define obj_set_weak_hook pecoff_obj_set_weak_hook
#define obj_clear_weak_hook pecoff_obj_clear_weak_hook
#endif

#ifndef OBJ_COFF_MAX_AUXENTRIES
#define OBJ_COFF_MAX_AUXENTRIES 1
#endif

#define obj_symbol_new_hook coff_obj_symbol_new_hook
#define obj_symbol_clone_hook coff_obj_symbol_clone_hook
#define obj_read_begin_hook coff_obj_read_begin_hook

#include "bfd/libcoff.h"

#define OUTPUT_FLAVOR bfd_target_coff_flavour

/* Alter the field names, for now, until we've fixed up the other
   references to use the new name.  */
#define OBJ_SYMFIELD_TYPE	unsigned long
#define sy_obj			sy_obj_flags

/* We can't use the predefined section symbols in bfd/section.c, as
   COFF symbols have extra fields.  See bfd/libcoff.h:coff_symbol_type.  */
#ifndef obj_sec_sym_ok_for_reloc
#define obj_sec_sym_ok_for_reloc(SEC)	((SEC)->owner != 0)
#endif

#define SYM_AUXENT(S) \
  (&coffsymbol (symbol_get_bfdsym (S))->native[1].u.auxent)
#define SYM_AUXINFO(S) \
  (&coffsymbol (symbol_get_bfdsym (S))->native[1])

/* The number of auxiliary entries.  */
#define S_GET_NUMBER_AUXILIARY(s) \
  (coffsymbol (symbol_get_bfdsym (s))->native->u.syment.n_numaux)
/* The number of auxiliary entries.  */
#define S_SET_NUMBER_AUXILIARY(s, v)	(S_GET_NUMBER_AUXILIARY (s) = (v))

/* True if a symbol name is in the string table, i.e. its length is > 8.  */
#define S_IS_STRING(s)		(strlen (S_GET_NAME (s)) > 8 ? 1 : 0)

/* Auxiliary entry macros. SA_ stands for symbol auxiliary.  */
/* Omit the tv related fields.  */
/* Accessors.  */

#define SA_GET_SYM_TAGNDX(s)	(SYM_AUXENT (s)->x_sym.x_tagndx.l)
#define SA_GET_SYM_LNNO(s)	(SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno)
#define SA_GET_SYM_SIZE(s)	(SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size)
#define SA_GET_SYM_FSIZE(s)	(SYM_AUXENT (s)->x_sym.x_misc.x_fsize)
#define SA_GET_SYM_LNNOPTR(s)	(SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr)
#define SA_GET_SYM_ENDNDX(s)	(SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx)
#define SA_GET_SYM_DIMEN(s,i)	(SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)])
#define SA_GET_FILE_FNAME(s)	(SYM_AUXENT (s)->x_file.x_fname)
#define SA_GET_SCN_SCNLEN(s)	(SYM_AUXENT (s)->x_scn.x_scnlen)
#define SA_GET_SCN_NRELOC(s)	(SYM_AUXENT (s)->x_scn.x_nreloc)
#define SA_GET_SCN_NLINNO(s)	(SYM_AUXENT (s)->x_scn.x_nlinno)

#define SA_SET_SYM_LNNO(s,v)	(SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno = (v))
#define SA_SET_SYM_SIZE(s,v)	(SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size = (v))
#define SA_SET_SYM_FSIZE(s,v)	(SYM_AUXENT (s)->x_sym.x_misc.x_fsize = (v))
#define SA_SET_SYM_LNNOPTR(s,v)	(SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr = (v))
#define SA_SET_SYM_DIMEN(s,i,v)	(SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)] = (v))
#define SA_SET_FILE_FNAME(s,v)	strncpy (SYM_AUXENT (s)->x_file.x_fname, (v), FILNMLEN)
#define SA_SET_SCN_SCNLEN(s,v)	(SYM_AUXENT (s)->x_scn.x_scnlen = (v))
#define SA_SET_SCN_NRELOC(s,v)	(SYM_AUXENT (s)->x_scn.x_nreloc = (v))
#define SA_SET_SCN_NLINNO(s,v)	(SYM_AUXENT (s)->x_scn.x_nlinno = (v))

#ifdef OBJ_XCOFF
#define SA_GET_SECT_SCNLEN(s)	(SYM_AUXENT (s)->x_sect.x_scnlen)
#define SA_GET_SECT_NRELOC(s)	(SYM_AUXENT (s)->x_sect.x_nreloc)
#define SA_SET_SECT_SCNLEN(s,v)	(SYM_AUXENT (s)->x_sect.x_scnlen = (v))
#define SA_SET_SECT_NRELOC(s,v)	(SYM_AUXENT (s)->x_sect.x_nreloc = (v))
#endif

/* Internal use only definitions. SF_ stands for symbol flags.

   These values can be assigned to sy_symbol.ost_flags field of a symbolS.  */

#define SF_NORMAL_MASK	0x0000ffff	/* bits 12-15 are general purpose.  */

#define SF_STATICS	0x00001000	/* Mark the .text & all symbols.  */
#define SF_DEFINED	0x00002000	/* Symbol is defined in this file.  */
#define SF_STRING	0x00004000	/* Symbol name length > 8.  */
#define SF_LOCAL	0x00008000	/* Symbol must not be emitted.  */

#define SF_DEBUG_MASK	0xffff0000	/* bits 16-31 are debug info.  */

#define SF_FUNCTION	0x00010000	/* The symbol is a function.  */
#define SF_PROCESS	0x00020000	/* Process symbol before write.  */
#define SF_TAGGED	0x00040000	/* Is associated with a tag.  */
#define SF_TAG		0x00080000	/* Is a tag.  */
#define SF_DEBUG	0x00100000	/* Is in debug or abs section.  */
#define SF_GET_SEGMENT	0x00200000	/* Get the section of the forward symbol.  */
/* All other bits are unused.  */

/* Accessors.  */
#define SF_GET(s)		(* symbol_get_obj (s))
#define SF_GET_DEBUG(s)		(symbol_get_bfdsym (s)->flags & BSF_DEBUGGING)
#define SF_SET_DEBUG(s)		(symbol_get_bfdsym (s)->flags |= BSF_DEBUGGING)
#define SF_GET_NORMAL_FIELD(s)	(SF_GET (s) & SF_NORMAL_MASK)
#define SF_GET_DEBUG_FIELD(s)	(SF_GET (s) & SF_DEBUG_MASK)
#define SF_GET_FILE(s)		(SF_GET (s) & SF_FILE)
#define SF_GET_STATICS(s)	(SF_GET (s) & SF_STATICS)
#define SF_GET_DEFINED(s)	(SF_GET (s) & SF_DEFINED)
#define SF_GET_STRING(s)	(SF_GET (s) & SF_STRING)
#define SF_GET_LOCAL(s)		(SF_GET (s) & SF_LOCAL)
#define SF_GET_FUNCTION(s)      (SF_GET (s) & SF_FUNCTION)
#define SF_GET_PROCESS(s)	(SF_GET (s) & SF_PROCESS)
#define SF_GET_TAGGED(s)	(SF_GET (s) & SF_TAGGED)
#define SF_GET_TAG(s)		(SF_GET (s) & SF_TAG)
#define SF_GET_GET_SEGMENT(s)	(SF_GET (s) & SF_GET_SEGMENT)

/* Modifiers.  */
#define SF_SET(s,v)		(SF_GET (s) = (v))
#define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK))
#define SF_SET_DEBUG_FIELD(s,v)	(SF_GET (s) |= ((v) & SF_DEBUG_MASK))
#define SF_SET_FILE(s)		(SF_GET (s) |= SF_FILE)
#define SF_SET_STATICS(s)	(SF_GET (s) |= SF_STATICS)
#define SF_SET_DEFINED(s)	(SF_GET (s) |= SF_DEFINED)
#define SF_SET_STRING(s)	(SF_GET (s) |= SF_STRING)
#define SF_SET_LOCAL(s)		(SF_GET (s) |= SF_LOCAL)
#define SF_CLEAR_LOCAL(s)	(SF_GET (s) &= ~SF_LOCAL)
#define SF_SET_FUNCTION(s)      (SF_GET (s) |= SF_FUNCTION)
#define SF_SET_PROCESS(s)	(SF_GET (s) |= SF_PROCESS)
#define SF_SET_TAGGED(s)	(SF_GET (s) |= SF_TAGGED)
#define SF_SET_TAG(s)		(SF_GET (s) |= SF_TAG)
#define SF_SET_GET_SEGMENT(s)	(SF_GET (s) |= SF_GET_SEGMENT)


/*  Line number handling.  */
extern int text_lineno_number;
extern int coff_line_base;
extern int coff_n_line_nos;
extern symbolS *coff_last_function;

#define obj_emit_lineno(WHERE, LINE, FILE_START)	abort ()
#define obj_app_file(name, app)      c_dot_file_symbol (name, app)
#define obj_frob_symbol(S,P) 	     coff_frob_symbol (S, & P)
#define obj_frob_section(S)	     coff_frob_section (S)
#define obj_frob_file_after_relocs() coff_frob_file_after_relocs ()
#ifndef obj_adjust_symtab
#define obj_adjust_symtab()	     coff_adjust_symtab ()
#endif

/* Forward the segment of a forwarded symbol, handle assignments that
   just copy symbol values, etc.  */
#ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
#ifndef TE_I386AIX
#define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \
  (SF_GET_GET_SEGMENT (dest) \
   ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
   : 0)
#else
#define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \
  (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \
   ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
   : 0)
#endif
#endif

/* Sanity check.  */

extern const pseudo_typeS coff_pseudo_table[];

#ifndef obj_pop_insert
#define obj_pop_insert() pop_insert (coff_pseudo_table)
#endif

/* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK
   to redefine the symbol later on.  This can happen if C symbols use
   a prefix, and a symbol is defined both with and without the prefix,
   as in start/_start/__start in gcc/libgcc1-test.c.  */
#define RESOLVE_SYMBOL_REDEFINITION(sym)		\
(SF_GET_GET_SEGMENT (sym)				\
 ? (sym->frag = frag_now,				\
    S_SET_VALUE (sym, frag_now_fix ()),			\
    S_SET_SEGMENT (sym, now_seg),			\
    0)							\
 : 0)

/* Stabs in a coff file go into their own section.  */
#define SEPARATE_STAB_SECTIONS 1

/* We need 12 bytes at the start of the section to hold some initial
   information.  */
#define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg)

/* Store the number of relocations in the section aux entry.  */
#ifdef OBJ_XCOFF
#define SET_SECTION_RELOCS(sec, relocs, n)		\
  do {							\
    symbolS * sectSym = section_symbol (sec);		\
    if (S_GET_STORAGE_CLASS (sectSym) == C_DWARF)	\
      SA_SET_SECT_NRELOC (sectSym, n);			\
    else						\
      SA_SET_SCN_NRELOC (sectSym, n);			\
  } while (0)
#else
#define SET_SECTION_RELOCS(sec, relocs, n) \
  SA_SET_SCN_NRELOC (section_symbol (sec), n)
#endif

#define obj_app_file(name, app) c_dot_file_symbol (name, app)

extern int  S_SET_DATA_TYPE              (symbolS *, int);
extern int  S_SET_STORAGE_CLASS          (symbolS *, int);
extern int  S_GET_STORAGE_CLASS          (symbolS *);
extern void SA_SET_SYM_ENDNDX            (symbolS *, symbolS *);
extern void coff_add_linesym             (symbolS *);
extern void c_dot_file_symbol            (const char *, int);
extern void coff_frob_symbol             (symbolS *, int *);
extern void coff_adjust_symtab           (void);
extern void coff_frob_section            (segT);
extern void coff_adjust_section_syms     (bfd *, asection *, void *);
extern void coff_frob_file_after_relocs  (void);
extern void coff_obj_symbol_new_hook     (symbolS *);
extern void coff_obj_symbol_clone_hook   (symbolS *, symbolS *);
extern void coff_obj_read_begin_hook     (void);
#ifdef TE_PE
extern void pecoff_obj_set_weak_hook     (symbolS *);
extern void pecoff_obj_clear_weak_hook   (symbolS *);
#endif
extern void obj_coff_section             (int);
extern segT obj_coff_add_segment         (const char *);
extern void obj_coff_section             (int);
extern void c_dot_file_symbol            (const char *, int);
extern segT s_get_segment                (symbolS *);
#ifndef tc_coff_symbol_emit_hook
extern void tc_coff_symbol_emit_hook     (symbolS *);
#endif
extern void obj_coff_pe_handle_link_once (void);
extern void obj_coff_init_stab_section   (segT);
extern void c_section_header             (struct internal_scnhdr *,
					  char *, long, long, long, long,
					  long, long, long, long);
extern void obj_coff_seh_do_final (void);

#ifndef obj_coff_generate_pdata
#define obj_coff_generate_pdata obj_coff_seh_do_final
#endif


#endif /* OBJ_FORMAT_H */