Open64: osprey/cygnus/include/coff/external.h Source File

00001 /* external.h  -- External COFF structures
00002    
00003    Copyright 2001 Free Software Foundation, Inc.
00004 
00005    This program is free software; you can redistribute it and/or modify
00006    it under the terms of the GNU General Public License as published by
00007    the Free Software Foundation; either version 2 of the License, or
00008    (at your option) any later version.
00009    
00010    This program is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013    GNU General Public License for more details.
00014    
00015    You should have received a copy of the GNU General Public License
00016    along with this program; if not, write to the Free Software
00017    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
00018 
00019 #ifndef COFF_EXTERNAL_H
00020 #define COFF_EXTERNAL_H
00021 
00022 #ifndef DO_NOT_DEFINE_FILHDR
00023 /********************** FILE HEADER **********************/
00024 
00025 struct external_filehdr
00026   {
00027     char f_magic[2];  /* magic number     */
00028     char f_nscns[2];  /* number of sections   */
00029     char f_timdat[4]; /* time & date stamp    */
00030     char f_symptr[4]; /* file pointer to symtab */
00031     char f_nsyms[4];  /* number of symtab entries */
00032     char f_opthdr[2]; /* sizeof(optional hdr)   */
00033     char f_flags[2];  /* flags      */
00034   };
00035 
00036 #define FILHDR  struct external_filehdr
00037 #define FILHSZ  20
00038 #endif
00039 
00040 #ifndef DO_NOT_DEFINE_AOUTHDR
00041 /********************** AOUT "OPTIONAL HEADER" **********************/
00042 
00043 typedef struct external_aouthdr
00044   {
00045     char magic[2];  /* type of file       */
00046     char vstamp[2]; /* version stamp      */
00047     char tsize[4];  /* text size in bytes, padded to FW bdry*/
00048     char dsize[4];  /* initialized data "  "    */
00049     char bsize[4];  /* uninitialized data "   "   */
00050     char entry[4];  /* entry pt.        */
00051     char text_start[4]; /* base of text used for this file  */
00052     char data_start[4]; /* base of data used for this file  */
00053   }
00054 AOUTHDR;
00055 
00056 #define AOUTHDRSZ 28
00057 #define AOUTSZ 28
00058 #endif
00059 
00060 #ifndef DO_NOT_DEFINE_SCNHDR
00061 /********************** SECTION HEADER **********************/
00062 
00063 struct external_scnhdr
00064   {
00065     char s_name[8]; /* section name       */
00066     char s_paddr[4];  /* physical address, aliased s_nlib   */
00067     char s_vaddr[4];  /* virtual address      */
00068     char s_size[4]; /* section size       */
00069     char s_scnptr[4]; /* file ptr to raw data for section   */
00070     char s_relptr[4]; /* file ptr to relocation   */
00071     char s_lnnoptr[4];  /* file ptr to line numbers   */
00072     char s_nreloc[2]; /* number of relocation entries   */
00073     char s_nlnno[2];  /* number of line number entries  */
00074     char s_flags[4];  /* flags        */
00075   };
00076 
00077 #define SCNHDR  struct external_scnhdr
00078 #define SCNHSZ  40
00079 
00080 /* Names of "special" sections.  */
00081 
00082 #define _TEXT  ".text"
00083 #define _DATA  ".data"
00084 #define _BSS   ".bss"
00085 #define _COMMENT ".comment"
00086 #define _LIB     ".lib"
00087 #endif /* not DO_NOT_DEFINE_SCNHDR */
00088 
00089 #ifndef DO_NOT_DEFINE_LINENO
00090 
00091 /********************** LINE NUMBERS **********************/
00092 
00093 #ifndef L_LNNO_SIZE
00094 #error  L_LNNO_SIZE needs to be defined
00095 #endif
00096 
00097 /* 1 line number entry for every "breakpointable" source line in a section.
00098    Line numbers are grouped on a per function basis; first entry in a function
00099    grouping will have l_lnno = 0 and in place of physical address will be the
00100    symbol table index of the function name.  */
00101 struct external_lineno
00102 {
00103   union
00104   {
00105     char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
00106     char l_paddr[4];  /* (physical) address of line number  */
00107   } l_addr;
00108 
00109   char l_lnno[L_LNNO_SIZE]; /* line number    */
00110 };
00111 
00112 #define LINENO  struct external_lineno
00113 #define LINESZ  (4 + L_LNNO_SIZE)
00114 
00115 #if L_LNNO_SIZE == 4
00116 #define GET_LINENO_LNNO(abfd, ext)      H_GET_32 (abfd,      (ext->l_lnno))
00117 #define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_32 (abfd, val, (ext->l_lnno))
00118 #endif
00119 #if L_LNNO_SIZE == 2
00120 #define GET_LINENO_LNNO(abfd, ext)      H_GET_16 (abfd,      (ext->l_lnno))
00121 #define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_16 (abfd, val, (ext->l_lnno))
00122 #endif
00123 
00124 #endif /* not DO_NOT_DEFINE_LINENO */
00125 
00126 #ifndef DO_NOT_DEFINE_SYMENT
00127 /********************** SYMBOLS **********************/
00128 
00129 #define E_SYMNMLEN  8 /* # characters in a symbol name  */
00130 #ifndef E_FILNMLEN
00131 #define E_FILNMLEN  14
00132 #endif
00133 #define E_DIMNUM  4 /* # array dimensions in auxiliary entry */
00134 
00135 struct external_syment 
00136 {
00137   union
00138   {
00139     char e_name[E_SYMNMLEN];
00140 
00141     struct
00142     {
00143       char e_zeroes[4];
00144       char e_offset[4];
00145     } e;
00146   } e;
00147 
00148   char e_value[4];
00149   char e_scnum[2];
00150   char e_type[2];
00151   char e_sclass[1];
00152   char e_numaux[1];
00153 };
00154 
00155 #define SYMENT  struct external_syment
00156 #define SYMESZ  18  
00157 
00158 #ifndef N_BTMASK
00159 #define N_BTMASK  0xf
00160 #endif
00161 
00162 #ifndef N_TMASK
00163 #define N_TMASK   0x30
00164 #endif
00165 
00166 #ifndef N_BTSHFT
00167 #define N_BTSHFT  4
00168 #endif
00169 
00170 #ifndef N_TSHIFT
00171 #define N_TSHIFT  2
00172 #endif
00173 
00174 #endif /* not DO_NOT_DEFINE_SYMENT */
00175 
00176 #ifndef DO_NOT_DEFINE_AUXENT
00177 
00178 union external_auxent
00179 {
00180   struct
00181   {
00182     char x_tagndx[4];   /* str, un, or enum tag indx */
00183     
00184     union
00185     {
00186       struct
00187       {
00188   char  x_lnno[2]; /* declaration line number */
00189   char  x_size[2]; /* str/union/array size */
00190       } x_lnsz;
00191       
00192       char x_fsize[4];  /* size of function */
00193       
00194     } x_misc;
00195     
00196     union
00197     {
00198       struct    /* if ISFCN, tag, or .bb */
00199       {
00200   char x_lnnoptr[4];  /* ptr to fcn line # */
00201   char x_endndx[4]; /* entry ndx past block end */
00202       } x_fcn;
00203       
00204       struct    /* if ISARY, up to 4 dimen. */
00205       {
00206   char x_dimen[E_DIMNUM][2];
00207       } x_ary;
00208       
00209     } x_fcnary;
00210     
00211     char x_tvndx[2];  /* tv index */
00212     
00213   } x_sym;
00214   
00215   union
00216   {
00217     char x_fname[E_FILNMLEN];
00218     
00219     struct
00220     {
00221       char x_zeroes[4];
00222       char x_offset[4];
00223     } x_n;
00224     
00225   } x_file;
00226   
00227   struct
00228   {
00229     char x_scnlen[4]; /* section length */
00230     char x_nreloc[2]; /* # relocation entries */
00231     char x_nlinno[2]; /* # line numbers */
00232 #ifdef INCLUDE_COMDAT_FIELDS_IN_AUXENT
00233     char x_checksum[4];      /* section COMDAT checksum       */
00234     char x_associated[2];    /* COMDAT associated section index */
00235     char x_comdat[1];      /* COMDAT selection number       */
00236 #endif    
00237   } x_scn;
00238   
00239   struct
00240   {
00241     char x_tvfill[4]; /* tv fill value */
00242     char x_tvlen[2];  /* length of .tv */
00243     char x_tvran[2][2]; /* tv range */
00244   } x_tv;   /* info about .tv section (in auxent of symbol .tv)) */
00245 };
00246 
00247 #define AUXENT  union external_auxent
00248 #define AUXESZ  18
00249 
00250 #define _ETEXT  "etext"
00251 
00252 #endif /* not DO_NOT_DEFINE_AUXENT */
00253 
00254 #endif /* COFF_EXTERNAL_H */