Initial revision
This commit is contained in:
Steve Chamberlain
parent
cdd896f940
commit
9dce1776b6
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@ -0,0 +1,81 @@
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/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Diddler.
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BFD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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BFD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with BFD; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* $Id$ */
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#define M68 1
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#include <ansidecl.h>
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#include <sysdep.h>
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#include "bfd.h"
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#include "libbfd.h"
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#include "obstack.h"
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#include "m68kcoff.h"
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#include "libcoff.h"
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static reloc_howto_type howto_table[] =
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{
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HOWTO(R_RELBYTE, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false),
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HOWTO(R_RELWORD, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false),
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HOWTO(R_RELLONG, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false),
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HOWTO(R_PCRBYTE, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false),
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HOWTO(R_PCRWORD, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
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HOWTO(R_PCRLONG, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false),
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};
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/* Turn a howto into a reloc nunmber */
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#define SELECT_RELOC(x,howto) { x = howto_table[howto->size +howto->pc_relative*3].type; }
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#define BADMAG(x) M68KBADMAG(x)
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#include "coff-code.h"
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#define coff_write_armap bsd_write_armap
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bfd_target m68kcoff_vec =
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{
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"m68kcoff", /* name */
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bfd_target_coff_flavour_enum,
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true, /* data byte order is big */
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true, /* header byte order is big */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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'/', /* ar_pad_char */
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15, /* ar_max_namelen */
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_do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* data */
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_do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
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{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
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bfd_generic_archive_p, _bfd_dummy_target},
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{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
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bfd_false},
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JUMP_TABLE(coff)
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};
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@ -0,0 +1,419 @@
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/*** coff information for M68K */
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/********************** FILE HEADER **********************/
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struct filehdr {
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unsigned short f_magic; /* magic number */
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unsigned short f_nscns; /* number of sections */
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long f_timdat; /* time & date stamp */
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long f_symptr; /* file pointer to symtab */
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long f_nsyms; /* number of symtab entries */
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unsigned short f_opthdr; /* sizeof(optional hdr) */
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unsigned short f_flags; /* flags */
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};
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/* Bits for f_flags:
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* F_RELFLG relocation info stripped from file
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* F_EXEC file is executable (no unresolved external references)
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* F_LNNO line numbers stripped from file
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* F_LSYMS local symbols stripped from file
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* F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax)
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*/
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#define F_RELFLG (0x0001)
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#define F_EXEC (0x0002)
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#define F_LNNO (0x0004)
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#define F_LSYMS (0x0008)
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#define F_AR32WR (0x0010)
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/* Motorola 68000/68008/68010/68020 */
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#define MC68MAGIC 0520
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#define MC68KWRMAGIC 0520 /* writeable text segments */
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#define MC68TVMAGIC 0521
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#define MC68KROMAGIC 0521 /* readonly shareable text segments */
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#define MC68KPGMAGIC 0522 /* demand paged text segments */
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#define M68MAGIC 0210
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#define M68TVMAGIC 0211
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#define M68KBADMAG(x) (((x).f_magic!=MC68MAGIC) && ((x).f_magic!=MC68KWRMAGIC) && ((x).f_magic!=MC68TVMAGIC) && \
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((x).f_magic!=MC68KROMAGIC) && ((x).f_magic!=MC68KPGMAGIC) && ((x).f_magic!=M68MAGIC) && ((x).f_magic!=M68TVMAGIC) )
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#define FILHDR struct filehdr
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#define FILHSZ sizeof(FILHDR)
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/********************** AOUT "OPTIONAL HEADER" **********************/
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typedef struct aouthdr {
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short magic; /* type of file */
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short vstamp; /* version stamp */
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unsigned long tsize; /* text size in bytes, padded to FW bdry*/
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unsigned long dsize; /* initialized data " " */
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unsigned long bsize; /* uninitialized data " " */
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unsigned long entry; /* entry pt. */
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unsigned long text_start; /* base of text used for this file */
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unsigned long data_start; /* base of data used for this file */
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} AOUTHDR;
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#define AOUTSZ (sizeof(AOUTHDR))
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/********************** STORAGE CLASSES **********************/
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#define C_EFCN -1 /* physical end of function */
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#define C_NULL 0
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#define C_AUTO 1 /* automatic variable */
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#define C_EXT 2 /* external symbol */
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#define C_STAT 3 /* static */
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#define C_REG 4 /* register variable */
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#define C_EXTDEF 5 /* external definition */
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#define C_LABEL 6 /* label */
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#define C_ULABEL 7 /* undefined label */
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#define C_MOS 8 /* member of structure */
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#define C_ARG 9 /* function argument */
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#define C_STRTAG 10 /* structure tag */
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#define C_MOU 11 /* member of union */
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#define C_UNTAG 12 /* union tag */
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#define C_TPDEF 13 /* type definition */
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#define C_USTATIC 14 /* undefined static */
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#define C_ENTAG 15 /* enumeration tag */
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#define C_MOE 16 /* member of enumeration */
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#define C_REGPARM 17 /* register parameter */
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#define C_FIELD 18 /* bit field */
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#define C_AUTOARG 19 /* auto argument */
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#define C_LASTENT 20 /* dummy entry (end of block) */
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#define C_BLOCK 100 /* ".bb" or ".eb" */
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#define C_FCN 101 /* ".bf" or ".ef" */
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#define C_EOS 102 /* end of structure */
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#define C_FILE 103 /* file name */
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#define C_LINE 104 /* line # reformatted as symbol table entry */
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#define C_ALIAS 105 /* duplicate tag */
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#define C_HIDDEN 106 /* ext symbol in dmert public lib */
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/********************** SECTION HEADER **********************/
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struct scnhdr {
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char s_name[8]; /* section name */
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long s_paddr; /* physical address, aliased s_nlib */
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long s_vaddr; /* virtual address */
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long s_size; /* section size */
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long s_scnptr; /* file ptr to raw data for section */
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long s_relptr; /* file ptr to relocation */
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long s_lnnoptr; /* file ptr to line numbers */
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unsigned short s_nreloc; /* number of relocation entries */
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unsigned short s_nlnno; /* number of line number entries*/
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long s_flags; /* flags */
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};
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/*
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* names of "special" sections
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*/
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#define _TEXT ".text"
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#define _DATA ".data"
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#define _BSS ".bss"
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/*
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* s_flags "type"
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*/
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#define STYP_REG (0x0000) /* "regular": allocated, relocated, loaded */
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#define STYP_DSECT (0x0001) /* "dummy": relocated only*/
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#define STYP_NOLOAD (0x0002) /* "noload": allocated, relocated, not loaded */
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#define STYP_GROUP (0x0004) /* "grouped": formed of input sections */
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#define STYP_PAD (0x0008) /* "padding": not allocated, not relocated, loaded */
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#define STYP_COPY (0x0010) /* "copy": for decision function used by field update; not allocated, not relocated,
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loaded; reloc & lineno entries processed normally */
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#define STYP_TEXT (0x0020) /* section contains text only */
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#define S_SHRSEG (0x0020) /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
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will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
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update all process invocations. */
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#define STYP_DATA (0x0040) /* section contains data only */
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#define STYP_BSS (0x0080) /* section contains bss only */
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#define S_NEWFCN (0x0100) /* In a minimal file or an update file, a new function (as compared with a replaced function) */
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#define STYP_INFO (0x0200) /* comment: not allocated not relocated, not loaded */
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#define STYP_OVER (0x0400) /* overlay: relocated not allocated or loaded */
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#define STYP_LIB (0x0800) /* for .lib: same as INFO */
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#define STYP_MERGE (0x2000) /* merge section -- combines with text, data or bss sections only */
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#define STYP_REVERSE_PAD (0x4000) /* section will be padded with no-op instructions wherever padding is necessary and there is a
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word of contiguous bytes beginning on a word boundary. */
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#define SCNHDR struct scnhdr
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#define SCNHSZ sizeof(SCNHDR)
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/********************** LINE NUMBERS **********************/
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/* 1 line number entry for every "breakpointable" source line in a section.
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* Line numbers are grouped on a per function basis; first entry in a function
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* grouping will have l_lnno = 0 and in place of physical address will be the
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* symbol table index of the function name.
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*/
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struct external_lineno {
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union {
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char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
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char l_paddr[4]; /* (physical) address of line number */
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} l_addr;
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char l_lnno[2]; /* line number */
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};
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struct internal_lineno {
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union {
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long l_symndx; /* function name symbol index, iff l_lnno == 0*/
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long l_paddr; /* (physical) address of line number */
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} l_addr;
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unsigned short l_lnno; /* line number */
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};
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#define LINENO struct external_lineno
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#define LINESZ sizeof(LINENO)
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/********************** SYMBOLS **********************/
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#define SYMNMLEN 8 /* # characters in a symbol name */
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#define FILNMLEN 14 /* # characters in a file name */
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#define DIMNUM 4 /* # array dimensions in auxiliary entry */
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struct external_syment
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{
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union {
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char e_name[SYMNMLEN];
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struct {
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char e_zeroes[4];
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char e_offset[4];
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} e;
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} e;
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char e_value[4];
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char e_scnum[2];
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char e_type[2];
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char e_sclass[1];
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char e_numaux[1];
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};
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struct internal_syment {
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union {
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char _n_name[SYMNMLEN]; /* old COFF version */
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struct {
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long _n_zeroes; /* new == 0 */
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long _n_offset; /* offset into string table */
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} _n_n;
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char *_n_nptr[2]; /* allows for overlaying */
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} _n;
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long n_value; /* value of symbol */
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short n_scnum; /* section number */
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unsigned short n_flags; /* copy of flags from filhdr */
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unsigned short n_type; /* type and derived type */
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char n_sclass; /* storage class */
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char n_numaux; /* number of aux. entries */
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};
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/*#define n_name _n._n_name
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#define n_ptr _n._n_nptr[1]
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#define n_zeroes _n._n_n._n_zeroes
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#define n_offset _n._n_n._n_offset
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*/
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/*
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* Relocatable symbols have number of the section in which they are defined,
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* or one of the following:
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*/
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#define N_UNDEF ((short)0) /* undefined symbol */
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#define N_ABS ((short)-1) /* value of symbol is absolute */
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#define N_DEBUG ((short)-2) /* debugging symbol -- value is meaningless */
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#define N_TV ((short)-3) /* indicates symbol needs preload transfer vector */
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#define P_TV ((short)-4) /* indicates symbol needs postload transfer vector*/
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/*
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* Type of a symbol, in low 4 bits of the word
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*/
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#define T_NULL 0
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#define T_VOID 1 /* function argument (only used by compiler) */
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#define T_CHAR 2 /* character */
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#define T_SHORT 3 /* short integer */
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#define T_INT 4 /* integer */
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#define T_LONG 5 /* long integer */
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#define T_FLOAT 6 /* floating point */
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#define T_DOUBLE 7 /* double word */
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#define T_STRUCT 8 /* structure */
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#define T_UNION 9 /* union */
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#define T_ENUM 10 /* enumeration */
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#define T_MOE 11 /* member of enumeration*/
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#define T_UCHAR 12 /* unsigned character */
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#define T_USHORT 13 /* unsigned short */
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#define T_UINT 14 /* unsigned integer */
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#define T_ULONG 15 /* unsigned long */
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#define T_LNGDBL 16 /* long double */
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/*
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* derived types, in n_type
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*/
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#define DT_NON (0) /* no derived type */
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#define DT_PTR (1) /* pointer */
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#define DT_FCN (2) /* function */
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#define DT_ARY (3) /* array */
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#define N_BTMASK (0x1f)
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#define N_TMASK (0x60)
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#define N_BTSHFT (5)
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#define N_TSHIFT (2)
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#define BTYPE(x) ((x) & N_BTMASK)
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#define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT))
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#define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT))
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#define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT))
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||||
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#define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK))
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union external_auxent {
|
||||
struct {
|
||||
char x_tagndx[4]; /* str, un, or enum tag indx */
|
||||
union {
|
||||
struct {
|
||||
char x_lnno[2]; /* declaration line number */
|
||||
char x_size[2]; /* str/union/array size */
|
||||
} x_lnsz;
|
||||
char x_fsize[4]; /* size of function */
|
||||
} x_misc;
|
||||
union {
|
||||
struct { /* if ISFCN, tag, or .bb */
|
||||
char x_lnnoptr[4]; /* ptr to fcn line # */
|
||||
char x_endndx[4]; /* entry ndx past block end */
|
||||
} x_fcn;
|
||||
struct { /* if ISARY, up to 4 dimen. */
|
||||
char x_dimen[DIMNUM][2];
|
||||
} x_ary;
|
||||
} x_fcnary;
|
||||
char x_tvndx[2]; /* tv index */
|
||||
} x_sym;
|
||||
|
||||
union {
|
||||
char x_fname[FILNMLEN];
|
||||
struct {
|
||||
char x_zeroes[4];
|
||||
char x_offset[4];
|
||||
} x_n;
|
||||
} x_file;
|
||||
|
||||
struct {
|
||||
char x_scnlen[4]; /* section length */
|
||||
char x_nreloc[2]; /* # relocation entries */
|
||||
char x_nlinno[2]; /* # line numbers */
|
||||
} x_scn;
|
||||
|
||||
struct {
|
||||
char x_tvfill[4]; /* tv fill value */
|
||||
char x_tvlen[2]; /* length of .tv */
|
||||
char x_tvran[2][2]; /* tv range */
|
||||
} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
|
||||
|
||||
|
||||
};
|
||||
union internal_auxent {
|
||||
struct {
|
||||
long x_tagndx; /* str, un, or enum tag indx */
|
||||
union {
|
||||
struct {
|
||||
unsigned short x_lnno; /* declaration line number */
|
||||
unsigned short x_size; /* str/union/array size */
|
||||
} x_lnsz;
|
||||
long x_fsize; /* size of function */
|
||||
} x_misc;
|
||||
union {
|
||||
struct { /* if ISFCN, tag, or .bb */
|
||||
long x_lnnoptr; /* ptr to fcn line # */
|
||||
long x_endndx; /* entry ndx past block end */
|
||||
} x_fcn;
|
||||
struct { /* if ISARY, up to 4 dimen. */
|
||||
unsigned short x_dimen[DIMNUM];
|
||||
} x_ary;
|
||||
} x_fcnary;
|
||||
unsigned short x_tvndx; /* tv index */
|
||||
} x_sym;
|
||||
|
||||
union {
|
||||
char x_fname[FILNMLEN];
|
||||
struct {
|
||||
long x_zeroes;
|
||||
long x_offset;
|
||||
} x_n;
|
||||
} x_file;
|
||||
|
||||
struct {
|
||||
long x_scnlen; /* section length */
|
||||
unsigned short x_nreloc; /* # relocation entries */
|
||||
unsigned short x_nlinno; /* # line numbers */
|
||||
} x_scn;
|
||||
|
||||
struct {
|
||||
long x_tvfill; /* tv fill value */
|
||||
unsigned short x_tvlen; /* length of .tv */
|
||||
unsigned short x_tvran[2]; /* tv range */
|
||||
} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
|
||||
|
||||
/******************************************
|
||||
* I960-specific *2nd* aux. entry formats
|
||||
******************************************/
|
||||
struct {
|
||||
/* This is a very old typo that keeps getting propagated. */
|
||||
#define x_stdindx x_stindx
|
||||
long x_stindx; /* sys. table entry */
|
||||
} x_sc; /* system call entry */
|
||||
|
||||
struct {
|
||||
unsigned long x_balntry; /* BAL entry point */
|
||||
} x_bal; /* BAL-callable function */
|
||||
|
||||
struct {
|
||||
unsigned long x_timestamp; /* time stamp */
|
||||
char x_idstring[20]; /* producer identity string */
|
||||
} x_ident; /* Producer ident info */
|
||||
|
||||
|
||||
};
|
||||
|
||||
#define SYMENT struct external_syment
|
||||
#define SYMESZ 18
|
||||
#define AUXENT union external_auxent
|
||||
#define AUXESZ 18
|
||||
|
||||
|
||||
# define _ETEXT "etext"
|
||||
|
||||
|
||||
/********************** RELOCATION DIRECTIVES **********************/
|
||||
|
||||
struct internal_reloc {
|
||||
long r_vaddr; /* Virtual address of reference */
|
||||
long r_symndx; /* Index into symbol table */
|
||||
unsigned short r_type; /* Relocation type */
|
||||
};
|
||||
|
||||
|
||||
struct external_reloc {
|
||||
char r_vaddr[4];
|
||||
char r_symndx[4];
|
||||
char r_type[2];
|
||||
};
|
||||
|
||||
#define R_RELBYTE 017
|
||||
#define R_RELWORD 020
|
||||
#define R_RELLONG 021
|
||||
#define R_PCRBYTE 022
|
||||
#define R_PCRWORD 023
|
||||
#define R_PCRLONG 024
|
||||
|
||||
#define RELOC struct external_reloc
|
||||
#define RELSZ 10
|
||||
|
||||
#define DEFAULT_DATA_SECTION_ALIGNMENT 4
|
||||
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
|
||||
#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
|
||||
/* For new sections we havn't heard of before */
|
||||
#define DEFAULT_SECTION_ALIGNMENT 4
|
||||
Loading…
Reference in New Issue