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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [include/] [coff/] [i960.h] - Blame information for rev 842

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1 227 jeremybenn
/* coff information for 80960.  Origins: Intel corp, natch.
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   Copyright 2001 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 2 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, MA 02110-1301, USA.  */
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/* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */
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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[4];     /* file pointer to symtab       */
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  char f_nsyms[4];      /* number of symtab entries     */
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  char f_opthdr[2];     /* sizeof(optional hdr)         */
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  char f_flags[2];      /* flags                        */
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};
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#define OMAGIC      (0407)      /* old impure format. data immediately
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                                   follows text. both sections are rw. */
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#define NMAGIC      (0410)      /* split i&d, read-only text */
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/*
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*       Intel 80960 (I960) processor flags.
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*       F_I960TYPE == mask for processor type field.
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*/
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#define F_I960TYPE      (0xf000)
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#define F_I960CORE      (0x1000)
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#define F_I960KB        (0x2000)
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#define F_I960SB        (0x2000)
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#define F_I960MC        (0x3000)
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#define F_I960XA        (0x4000)
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#define F_I960CA        (0x5000)
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#define F_I960KA        (0x6000)
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#define F_I960SA        (0x6000)
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#define F_I960JX        (0x7000)
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#define F_I960HX        (0x8000)
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/** i80960 Magic Numbers
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*/
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#define I960ROMAGIC     (0x160) /* read-only text segments */
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#define I960RWMAGIC     (0x161) /* read-write text segments */
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#define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC))
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#define FILHDR  struct external_filehdr
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#define FILHSZ  20
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/********************** AOUT "OPTIONAL HEADER" **********************/
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typedef struct
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{
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  unsigned long phys_addr;
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  unsigned long bitarray;
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} TAGBITS;
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typedef struct
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{
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  char  magic[2];               /* type of file                         */
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  char  vstamp[2];              /* version stamp                        */
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  char  tsize[4];               /* text size in bytes, padded to FW bdry*/
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  char  dsize[4];               /* initialized data "  "                */
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  char  bsize[4];               /* uninitialized data "   "             */
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  char  entry[4];               /* entry pt.                            */
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  char  text_start[4];          /* base of text used for this file */
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  char  data_start[4];          /* base of data used for this file */
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  char  tagentries[4];          /* number of tag entries to follow */
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}
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AOUTHDR;
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/* return a pointer to the tag bits array */
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#define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1))
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/* compute size of a header */
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/*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/
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#define AOUTSZ 32
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#define AOUTHDRSZ 32
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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[4];     /* physical address, aliased s_nlib */
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  char          s_vaddr[4];     /* virtual address              */
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  char          s_size[4];      /* section size                 */
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  char          s_scnptr[4];    /* file ptr to raw data for section */
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  char          s_relptr[4];    /* file ptr to relocation       */
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  char          s_lnnoptr[4];   /* file ptr to line numbers     */
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  char          s_nreloc[2];    /* number of relocation entries */
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  char          s_nlnno[2];     /* number of line number entries*/
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  char          s_flags[4];     /* flags                        */
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  char          s_align[4];     /* section alignment            */
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};
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#define SCNHDR  struct external_scnhdr
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#define SCNHSZ  44
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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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/********************** 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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{
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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[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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  char padding[2];      /* force alignment      */
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};
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#define LINENO  struct external_lineno
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#define LINESZ  8
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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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  union
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  {
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    char e_name[E_SYMNMLEN];
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    struct
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    {
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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_flags[2];
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  char e_type[4];
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  char e_sclass[1];
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  char e_numaux[1];
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  char pad2[2];
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};
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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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union external_auxent
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{
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  struct
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  {
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    char x_tagndx[4];   /* str, un, or enum tag indx */
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    union
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    {
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      struct
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      {
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        char  x_lnno[2]; /* 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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      char x_fsize[4];  /* size of function */
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    } x_misc;
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    union
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    {
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      struct            /* if ISFCN, tag, or .bb */
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      {
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        char x_lnnoptr[4];      /* ptr to fcn line # */
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        char x_endndx[4];       /* entry ndx past block end */
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      } x_fcn;
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      struct            /* if ISARY, up to 4 dimen. */
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      {
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        char x_dimen[E_DIMNUM][2];
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      } x_ary;
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    } x_fcnary;
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    char x_tvndx[2];            /* tv index */
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  } x_sym;
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  union
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  {
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    char x_fname[E_FILNMLEN];
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    struct
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    {
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      char x_zeroes[4];
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      char x_offset[4];
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    } x_n;
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  } x_file;
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  struct
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  {
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    char x_scnlen[4];                   /* section length */
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    char x_nreloc[2];   /* # relocation entries */
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    char x_nlinno[2];   /* # line numbers */
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  } x_scn;
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  struct
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  {
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    char x_tvfill[4];   /* tv fill value */
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    char x_tvlen[2];    /* length of .tv */
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    char x_tvran[2][2]; /* tv range */
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  } x_tv;               /* info about .tv section (in auxent of symbol .tv)) */
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  /******************************************
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   *  I960-specific *2nd* aux. entry formats
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   ******************************************/
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  struct
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  {
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    /* This is a very old typo that keeps getting propagated. */
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#define x_stdindx x_stindx
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    char x_stindx[4];   /* sys. table entry */
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  } x_sc;       /* system call entry */
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  struct
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  {
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    char x_balntry[4]; /* BAL entry point */
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  } x_bal; /* BAL-callable function */
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  struct
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  {
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    char x_timestamp[4];                /* time stamp */
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    char        x_idstring[20];         /* producer identity string */
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  } x_ident;                            /* Producer ident info */
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};
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#define SYMENT  struct external_syment
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#define SYMESZ  24
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#define AUXENT  union external_auxent
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#define AUXESZ  24
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#       define _ETEXT   "_etext"
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/********************** RELOCATION DIRECTIVES **********************/
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struct external_reloc
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{
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  char r_vaddr[4];
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  char r_symndx[4];
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  char r_type[2];
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  char pad[2];
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};
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/* r_type values for the i960.  */
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/* The i960 uses R_RELLONG, which is defined in internal.h as 0x11.
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   It is an absolute 32 bit relocation.  */
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#define R_IPRMED        (0x19)  /* 24-bit ip-relative relocation */
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#define R_OPTCALL       (0x1b)  /* 32-bit optimizable call (leafproc/sysproc) */
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#define R_OPTCALLX      (0x1c)  /* 64-bit optimizable call (leafproc/sysproc) */
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/* The following relocation types are defined use by relaxing linkers,
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   which convert 32 bit calls (which require a 64 bit instruction)
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   into 24 bit calls (which require a 32 bit instruction) when
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   possible.  It will be possible whenever the target of the call is
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   within a 24 bit range of the call instruction.
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   It is always safe to ignore these relocations.  They only serve to
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   mark points which the relaxing linker will have to consider.  The
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   assembler must ensure that the correct code is generated even if
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   the relocations are ignored.  In particular, this means that the
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   R_IPR13 relocation may not appear with an external symbol.  */
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#define R_IPR13         (0x1d)  /* 13 bit ip-relative branch */
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#define R_ALIGN         (0x1e)  /* alignment marker.  This has no
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                                   associated symbol.  Instead, the
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                                   r_symndx field indicates the
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                                   require alignment at this point in
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                                   the file.  It must be a power of 2.  */
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#define RELOC struct external_reloc
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#define RELSZ 12
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