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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [include/] [coff/] [rs6k64.h] - Blame information for rev 17

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/* IBM RS/6000 "XCOFF64" file definitions for BFD.
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   Copyright (C) 2000, 2001, 2002, 2010 Free Software Foundation, Inc.
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   This program 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 3 of the License, or
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   (at your option) any later version.
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   This program 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 this program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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/********************** FILE HEADER **********************/
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struct external_filehdr
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{
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  char f_magic[2];      /* magic number                 */
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  char f_nscns[2];      /* number of sections           */
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  char f_timdat[4];     /* time & date stamp            */
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  char f_symptr[8];     /* file pointer to symtab       */
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  char f_opthdr[2];     /* sizeof(optional hdr)         */
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  char f_flags[2];      /* flags                        */
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  char f_nsyms[4];      /* number of symtab entries     */
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};
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/* IBM RS/6000.  */
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#define U803XTOCMAGIC 0757      /* Aix 4.3 64-bit XCOFF */
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#define U64_TOCMAGIC  0767      /* AIX 5+ 64-bit XCOFF */
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#define BADMAG(x) ((x).f_magic != U803XTOCMAGIC && (x).f_magic != U64_TOCMAGIC)
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#define FILHDR  struct external_filehdr
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#define FILHSZ  24
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/********************** AOUT "OPTIONAL HEADER" **********************/
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typedef struct
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{
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  unsigned char magic[2];               /* type of file                 */
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  unsigned char vstamp[2];              /* version stamp                */
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  unsigned char o_debugger[4];          /* reserved                     */
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  unsigned char text_start[8];          /* base of text used for this file */
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  unsigned char data_start[8];          /* base of data used for this file */
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  unsigned char o_toc[8];               /* address of TOC */
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  unsigned char o_snentry[2];           /* section number of entry point */
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  unsigned char o_sntext[2];            /* section number of .text section */
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  unsigned char o_sndata[2];            /* section number of .data section */
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  unsigned char o_sntoc[2];             /* section number of TOC */
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  unsigned char o_snloader[2];          /* section number of .loader section */
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  unsigned char o_snbss[2];             /* section number of .bss section */
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  unsigned char o_algntext[2];          /* .text alignment */
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  unsigned char o_algndata[2];          /* .data alignment */
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  unsigned char o_modtype[2];           /* module type (??) */
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  unsigned char o_cputype[2];           /* cpu type */
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  unsigned char o_resv2[4];             /* reserved                     */
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  unsigned char tsize[8];               /* text size bytes, padded to FW bdry */
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  unsigned char dsize[8];               /* initialized data "  "        */
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  unsigned char bsize[8];               /* uninitialized data "   "     */
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  unsigned char entry[8];               /* entry pt.                    */
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  unsigned char o_maxstack[8];          /* max stack size (??)          */
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  unsigned char o_maxdata[8];           /* max data size (??)           */
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  unsigned char o_resv3[16];            /* reserved                     */
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}
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AOUTHDR;
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#define AOUTSZ 120
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#define SMALL_AOUTSZ (0)
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#define AOUTHDRSZ 72
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/********************** SECTION HEADER **********************/
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struct external_scnhdr
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{
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  char  s_name[8];      /* section name                 */
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  char  s_paddr[8];     /* physical address, aliased s_nlib */
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  char  s_vaddr[8];     /* virtual address              */
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  char  s_size[8];      /* section size                 */
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  char  s_scnptr[8];    /* file ptr to raw data for section */
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  char  s_relptr[8];    /* file ptr to relocation       */
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  char  s_lnnoptr[8];   /* file ptr to line numbers     */
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  char  s_nreloc[4];    /* number of relocation entries */
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  char  s_nlnno[4];     /* number of line number entries*/
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  char  s_flags[4];     /* flags                        */
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  char  s_pad[4];       /* padding */
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};
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#define SCNHDR  struct external_scnhdr
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#define SCNHSZ  72
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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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struct external_lineno
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{
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  union
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  {
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    char l_symndx[4];   /* function name symbol index, iff l_lnno == 0*/
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    char l_paddr[8];    /* (physical) address of line number    */
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  } l_addr;
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  char l_lnno[4];       /* line number          */
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};
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#define LINENO  struct external_lineno
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#define LINESZ  12
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/********************** SYMBOLS **********************/
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#define E_SYMNMLEN      8       /* # characters in a symbol name        */
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#define E_FILNMLEN      14      /* # characters in a file name          */
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#define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
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struct external_syment
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{
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  char e_value[8];
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  char e_offset[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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#define N_BTMASK        (017)
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#define N_TMASK         (060)
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#define N_BTSHFT        (4)
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#define N_TSHIFT        (2)
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union external_auxent
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{
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    struct {
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        union {
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            struct {
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                char x_lnno[4];         /* declaration line number */
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                char x_size[2];         /* str/union/array size */
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            } x_lnsz;
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            struct {
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                char x_lnnoptr[8];/* ptr to fcn line */
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                char x_fsize[4];         /* size of function */
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                char x_endndx[4];        /* entry ndx past block end */
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            } x_fcn;
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        } x_fcnary;
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    } x_sym;
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    struct {
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        union {
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            char x_fname[E_FILNMLEN];
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            struct {
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                char x_zeroes[4];
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                char x_offset[4];
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                char x_pad[6];
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            } x_n;
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        } x_n;
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        unsigned char x_ftype[1];
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        unsigned char x_resv[2];
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    } x_file;
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    struct {
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        char x_exptr[8];
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        char x_fsize[4];
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        char x_endndx[4];
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        char x_pad[1];
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    } x_except;
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    struct {
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            unsigned char x_scnlen_lo[4];
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            unsigned char x_parmhash[4];
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            unsigned char x_snhash[2];
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            unsigned char x_smtyp[1];
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            unsigned char x_smclas[1];
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            unsigned char x_scnlen_hi[4];
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            unsigned char x_pad[1];
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    } x_csect;
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    struct {
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        char x_pad[17];
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        char x_auxtype[1];
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    } x_auxtype;
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};
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#define SYMENT  struct external_syment
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#define SYMESZ  18      
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#define AUXENT  union external_auxent
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#define AUXESZ  18
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#define DBXMASK 0x80            /* for dbx storage mask */
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#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)
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/* Values for auxtype field in XCOFF64, taken from AIX 4.3 sym.h.  */
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#define _AUX_EXCEPT     255
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#define _AUX_FCN        254
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#define _AUX_SYM        253
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#define _AUX_FILE       252
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#define _AUX_CSECT      251
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/********************** RELOCATION DIRECTIVES **********************/
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struct external_reloc
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{
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  char r_vaddr[8];
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  char r_symndx[4];
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  char r_size[1];
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  char r_type[1];
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};
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#define RELOC struct external_reloc
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#define RELSZ 14
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#define DEFAULT_DATA_SECTION_ALIGNMENT 4
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#define DEFAULT_BSS_SECTION_ALIGNMENT 4
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#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
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/* For new sections we havn't heard of before */
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#define DEFAULT_SECTION_ALIGNMENT 4
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/* The ldhdr structure.  This appears at the start of the .loader
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   section.  */
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struct external_ldhdr
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{
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  bfd_byte l_version[4];
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  bfd_byte l_nsyms[4];
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  bfd_byte l_nreloc[4];
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  bfd_byte l_istlen[4];
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  bfd_byte l_nimpid[4];
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  bfd_byte l_stlen[4];
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  bfd_byte l_impoff[8];
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  bfd_byte l_stoff[8];
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  bfd_byte l_symoff[8];
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  bfd_byte l_rldoff[8];
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};
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#define LDHDRSZ (56)
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struct external_ldsym
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{
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  bfd_byte l_value[8];
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  bfd_byte l_offset[4];
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  bfd_byte l_scnum[2];
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  bfd_byte l_smtype[1];
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  bfd_byte l_smclas[1];
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  bfd_byte l_ifile[4];
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  bfd_byte l_parm[4];
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};
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#define LDSYMSZ (24)
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struct external_ldrel
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{
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  bfd_byte l_vaddr[8];
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  bfd_byte l_rtype[2];
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  bfd_byte l_rsecnm[2];
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  bfd_byte l_symndx[4];
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};
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#define LDRELSZ (16)
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struct external_exceptab
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{
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  union {
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    bfd_byte e_symndx[4];
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    bfd_byte e_paddr[8];
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  } e_addr;
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  bfd_byte e_lang[1];
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  bfd_byte e_reason[1];
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};
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#define EXCEPTSZ (10)

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