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353 lines
9.2 KiB
353 lines
9.2 KiB
/* IBM RS/6000 "XCOFF" file definitions for BFD. |
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Copyright (C) 1990-2014 Free Software Foundation, Inc. |
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Written by Mimi Phuong-Thao Vo of IBM |
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and John Gilmore of Cygnus Support. |
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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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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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/* IBM RS/6000 */ |
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#define U802WRMAGIC 0730 /* writeable text segments **chh** */ |
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#define U802ROMAGIC 0735 /* readonly sharable text segments */ |
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#define U802TOCMAGIC 0737 /* readonly text segments and TOC */ |
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#define BADMAG(x) \ |
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((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \ |
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(x).f_magic != U802TOCMAGIC) |
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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 char magic[2]; /* type of file */ |
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unsigned char vstamp[2]; /* version stamp */ |
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unsigned char tsize[4]; /* text size in bytes, padded to FW bdry */ |
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unsigned char dsize[4]; /* initialized data " " */ |
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unsigned char bsize[4]; /* uninitialized data " " */ |
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unsigned char entry[4]; /* entry pt. */ |
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unsigned char text_start[4]; /* base of text used for this file */ |
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unsigned char data_start[4]; /* base of data used for this file */ |
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unsigned char o_toc[4]; /* 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_maxstack[4]; /* max stack size (??) */ |
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unsigned char o_maxdata[4]; /* max data size (??) */ |
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unsigned char o_resv2[12]; /* reserved */ |
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} |
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AOUTHDR; |
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#define AOUTSZ 72 |
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#define SMALL_AOUTSZ (28) |
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#define AOUTHDRSZ 72 |
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/********************** SECTION HEADER **********************/ |
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struct external_scnhdr { |
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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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}; |
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#define SCNHDR struct external_scnhdr |
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#define SCNHSZ 40 |
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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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#define LINENO struct external_lineno |
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#define LINESZ 6 |
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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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char e_name[E_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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#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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struct { |
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char x_tagndx[4]; /* str, un, or enum tag indx */ |
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union { |
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struct { |
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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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struct { /* if ISFCN, tag, or .bb */ |
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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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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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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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} x_n; |
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} x_n; |
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char x_ftype[1]; |
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} x_file; |
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struct { |
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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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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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struct { |
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unsigned char x_scnlen[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_stab[4]; |
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unsigned char x_snstab[2]; |
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} x_csect; |
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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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/********************** RELOCATION DIRECTIVES **********************/ |
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struct external_reloc { |
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char r_vaddr[4]; |
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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 10 |
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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_impoff[4]; |
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bfd_byte l_stlen[4]; |
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bfd_byte l_stoff[4]; |
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}; |
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#define LDHDRSZ (8 * 4) |
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struct external_ldsym |
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{ |
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union |
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{ |
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bfd_byte _l_name[E_SYMNMLEN]; |
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struct |
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{ |
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bfd_byte _l_zeroes[4]; |
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bfd_byte _l_offset[4]; |
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} _l_l; |
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} _l; |
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bfd_byte l_value[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 (8 + 3 * 4 + 2 + 2) |
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struct external_ldrel |
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{ |
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bfd_byte l_vaddr[4]; |
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bfd_byte l_symndx[4]; |
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bfd_byte l_rtype[2]; |
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bfd_byte l_rsecnm[2]; |
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}; |
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#define LDRELSZ (2 * 4 + 2 * 2) |
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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[4]; |
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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 (4 + 2) |
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/******************** Core files *************************/ |
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struct external_core_dumpx |
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{ |
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unsigned char c_signo[1]; |
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unsigned char c_flag[1]; |
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unsigned char c_entries[2]; |
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unsigned char c_version[4]; |
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unsigned char c_fdsinfox[8]; |
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unsigned char c_loader[8]; |
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unsigned char c_lsize[8]; |
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unsigned char c_n_thr[4]; |
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unsigned char c_reserved0[4]; |
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unsigned char c_thr[8]; |
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unsigned char c_segs[8]; |
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unsigned char c_segregion[8]; |
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unsigned char c_stack[8]; |
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unsigned char c_stackorg[8]; |
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unsigned char c_size[8]; |
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unsigned char c_data[8]; |
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unsigned char c_dataorg[8]; |
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unsigned char c_datasize[8]; |
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unsigned char c_sdorg[8]; |
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unsigned char c_sdsize[8]; |
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unsigned char c_vmmregions[8]; |
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unsigned char c_vmm[8]; |
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unsigned char c_impl[4]; |
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unsigned char c_pad[4]; |
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unsigned char c_cprs[8]; |
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unsigned char c_reserved[7 * 8]; |
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/* Followed by: |
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- context of the faulting thread. |
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- user structure. */ |
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}; |
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/* Core file verion. */ |
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#define CORE_DUMPX_VERSION 0x0feeddb1 |
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#define CORE_DUMPXX_VERSION 0x0feeddb2 |
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struct external_ld_info32 |
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{ |
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unsigned char ldinfo_next[4]; |
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unsigned char core_offset[4]; |
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unsigned char ldinfo_textorg[4]; |
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unsigned char ldinfo_textsize[4]; |
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unsigned char ldinfo_dataorg[4]; |
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unsigned char ldinfo_datasize[4]; |
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unsigned char ldinfo_filename[2]; |
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};
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