/* IBM RS/6000 "XCOFF" file definitions for BFD.

   Copyright (C) 1990-2018 Free Software Foundation, Inc.

   Written by Mimi Phuong-Thao Vo of IBM

   and John Gilmore of Cygnus Support.

   This program 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 of the License, or

   (at your option) any later version.

   This program 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 this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

/********************** FILE HEADER **********************/

struct external_filehdr {

	char f_magic[2];	/* magic number			*/

	char f_nscns[2];	/* number of sections		*/

	char f_timdat[4];	/* time & date stamp		*/

	char f_symptr[4];	/* file pointer to symtab	*/

	char f_nsyms[4];	/* number of symtab entries	*/

	char f_opthdr[2];	/* sizeof(optional hdr)		*/

	char f_flags[2];	/* flags			*/

};

        /* IBM RS/6000 */

#define U802WRMAGIC     0730    /* writeable text segments **chh**      */

#define U802ROMAGIC     0735    /* readonly sharable text segments      */

#define U802TOCMAGIC    0737    /* readonly text segments and TOC       */

#define BADMAG(x)	\

	((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \

	 (x).f_magic != U802TOCMAGIC)

#define	FILHDR	struct external_filehdr

#define	FILHSZ	20

/********************** AOUT "OPTIONAL HEADER" **********************/

typedef struct

{

  unsigned char	magic[2];	/* type of file			*/

  unsigned char	vstamp[2];	/* version stamp		*/

  unsigned char	tsize[4];	/* text size in bytes, padded to FW bdry */

  unsigned char	dsize[4];	/* initialized data "  "	*/

  unsigned char	bsize[4];	/* uninitialized data "   "	*/

  unsigned char	entry[4];	/* entry pt.			*/

  unsigned char	text_start[4];	/* base of text used for this file */

  unsigned char	data_start[4];	/* base of data used for this file */

  unsigned char	o_toc[4];	/* address of TOC */

  unsigned char	o_snentry[2];	/* section number of entry point */

  unsigned char	o_sntext[2];	/* section number of .text section */

  unsigned char	o_sndata[2];	/* section number of .data section */

  unsigned char	o_sntoc[2];	/* section number of TOC */

  unsigned char	o_snloader[2];	/* section number of .loader section */

  unsigned char	o_snbss[2];	/* section number of .bss section */

  unsigned char	o_algntext[2];	/* .text alignment */

  unsigned char	o_algndata[2];	/* .data alignment */

  unsigned char	o_modtype[2];	/* module type (??) */

  unsigned char o_cputype[2];	/* cpu type */

  unsigned char	o_maxstack[4];	/* max stack size (??) */

  unsigned char o_maxdata[4];	/* max data size (??) */

  unsigned char	o_resv2[12];	/* reserved */

}

AOUTHDR;

#define AOUTSZ 72

#define SMALL_AOUTSZ (28)

#define AOUTHDRSZ 72

/********************** SECTION HEADER **********************/

struct external_scnhdr {

	char		s_name[8];	/* section name			*/

	char		s_paddr[4];	/* physical address, aliased s_nlib */

	char		s_vaddr[4];	/* virtual address		*/

	char		s_size[4];	/* section size			*/

	char		s_scnptr[4];	/* file ptr to raw data for section */

	char		s_relptr[4];	/* file ptr to relocation	*/

	char		s_lnnoptr[4];	/* file ptr to line numbers	*/

	char		s_nreloc[2];	/* number of relocation entries	*/

	char		s_nlnno[2];	/* number of line number entries*/

	char		s_flags[4];	/* flags			*/

};

#define	SCNHDR	struct external_scnhdr

#define	SCNHSZ	40

/********************** LINE NUMBERS **********************/

/* 1 line number entry for every "breakpointable" source line in a section.

 * Line numbers are grouped on a per function basis; first entry in a function

 * grouping will have l_lnno = 0 and in place of physical address will be the

 * symbol table index of the function name.

 */

struct external_lineno {

	union {

		char l_symndx[4];	/* function name symbol index, iff l_lnno == 0*/

		char l_paddr[4];	/* (physical) address of line number	*/

	} l_addr;

	char l_lnno[2];	/* line number		*/

};

#define	LINENO	struct external_lineno

#define	LINESZ	6

/********************** SYMBOLS **********************/

#define E_SYMNMLEN	8	/* # characters in a symbol name	*/

#define E_FILNMLEN	14	/* # characters in a file name		*/

#define E_DIMNUM	4	/* # array dimensions in auxiliary entry */

struct external_syment 

{

  union {

    char e_name[E_SYMNMLEN];

    struct {

      char e_zeroes[4];

      char e_offset[4];

    } e;

  } e;

  char e_value[4];

  char e_scnum[2];

  char e_type[2];

  char e_sclass[1];

  char e_numaux[1];

};

#define N_BTMASK	(017)

#define N_TMASK		(060)

#define N_BTSHFT	(4)

#define N_TSHIFT	(2)

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[E_DIMNUM][2];

			} x_ary;

		} x_fcnary;

		char x_tvndx[2];		/* tv index */

	} x_sym;

        struct {

                union {

                        char x_fname[E_FILNMLEN];

                        struct {

                                char x_zeroes[4];

                                char x_offset[4];

                        } x_n;

                } x_n;

                char x_ftype[1];

        } 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)) */

	struct {

		unsigned char x_scnlen[4];

		unsigned char x_parmhash[4];

		unsigned char x_snhash[2];

		unsigned char x_smtyp[1];

		unsigned char x_smclas[1];

		unsigned char x_stab[4];

		unsigned char x_snstab[2];

	} x_csect;

};

#define	SYMENT	struct external_syment

#define	SYMESZ	18

#define	AUXENT	union external_auxent

#define	AUXESZ	18

#define DBXMASK 0x80		/* for dbx storage mask */

#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)

/********************** RELOCATION DIRECTIVES **********************/

struct external_reloc {

  char r_vaddr[4];

  char r_symndx[4];

  char r_size[1];

  char r_type[1];

};

#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

/* The ldhdr structure.  This appears at the start of the .loader

   section.  */

struct external_ldhdr

{

  bfd_byte l_version[4];

  bfd_byte l_nsyms[4];

  bfd_byte l_nreloc[4];

  bfd_byte l_istlen[4];

  bfd_byte l_nimpid[4];

  bfd_byte l_impoff[4];

  bfd_byte l_stlen[4];

  bfd_byte l_stoff[4];

};

#define LDHDRSZ (8 * 4)

struct external_ldsym

{

  union

    {

      bfd_byte _l_name[E_SYMNMLEN];

      struct

	{

	  bfd_byte _l_zeroes[4];

	  bfd_byte _l_offset[4];

	} _l_l;

    } _l;

  bfd_byte l_value[4];

  bfd_byte l_scnum[2];

  bfd_byte l_smtype[1];

  bfd_byte l_smclas[1];

  bfd_byte l_ifile[4];

  bfd_byte l_parm[4];

};

#define LDSYMSZ (8 + 3 * 4 + 2 + 2)

struct external_ldrel

{

  bfd_byte l_vaddr[4];

  bfd_byte l_symndx[4];

  bfd_byte l_rtype[2];

  bfd_byte l_rsecnm[2];

};

#define LDRELSZ (2 * 4 + 2 * 2)

struct external_exceptab

{

  union {

    bfd_byte e_symndx[4];

    bfd_byte e_paddr[4];

  } e_addr;

  bfd_byte e_lang[1];

  bfd_byte e_reason[1];

};

#define EXCEPTSZ (4 + 2)

/******************** Core files *************************/

struct external_core_dumpx

{

  unsigned char c_signo[1];

  unsigned char c_flag[1];

  unsigned char c_entries[2];

  unsigned char c_version[4];

  unsigned char c_fdsinfox[8];

  unsigned char c_loader[8];

  unsigned char c_lsize[8];

  unsigned char c_n_thr[4];

  unsigned char c_reserved0[4];

  unsigned char c_thr[8];

  unsigned char c_segs[8];

  unsigned char c_segregion[8];

  unsigned char c_stack[8];

  unsigned char c_stackorg[8];

  unsigned char c_size[8];

  unsigned char c_data[8];

  unsigned char c_dataorg[8];

  unsigned char c_datasize[8];

  unsigned char c_sdorg[8];

  unsigned char c_sdsize[8];

  unsigned char c_vmmregions[8];

  unsigned char c_vmm[8];

  unsigned char c_impl[4];

  unsigned char c_pad[4];

  unsigned char c_cprs[8];

  unsigned char c_reserved[7 * 8];

  /* Followed by:

     - context of the faulting thread.

     - user structure.  */

};

/* Core file verion.  */

#define CORE_DUMPX_VERSION 0x0feeddb1

#define CORE_DUMPXX_VERSION 0x0feeddb2

struct external_ld_info32

{

  unsigned char ldinfo_next[4];

  unsigned char core_offset[4];

  unsigned char ldinfo_textorg[4];

  unsigned char ldinfo_textsize[4];

  unsigned char ldinfo_dataorg[4];

  unsigned char ldinfo_datasize[4];

  unsigned char ldinfo_filename[2];

};