/* IBM RS/6000 "XCOFF64" file definitions for BFD. Copyright (C) 2000, 2001, 2002, 2010 Free Software Foundation, Inc. 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[8]; /* file pointer to symtab */ char f_opthdr[2]; /* sizeof(optional hdr) */ char f_flags[2]; /* flags */ char f_nsyms[4]; /* number of symtab entries */ }; /* IBM RS/6000. */ #define U803XTOCMAGIC 0757 /* Aix 4.3 64-bit XCOFF */ #define U64_TOCMAGIC 0767 /* AIX 5+ 64-bit XCOFF */ #define BADMAG(x) ((x).f_magic != U803XTOCMAGIC && (x).f_magic != U64_TOCMAGIC) #define FILHDR struct external_filehdr #define FILHSZ 24 /********************** AOUT "OPTIONAL HEADER" **********************/ typedef struct { unsigned char magic[2]; /* type of file */ unsigned char vstamp[2]; /* version stamp */ unsigned char o_debugger[4]; /* reserved */ unsigned char text_start[8]; /* base of text used for this file */ unsigned char data_start[8]; /* base of data used for this file */ unsigned char o_toc[8]; /* 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_resv2[4]; /* reserved */ unsigned char tsize[8]; /* text size bytes, padded to FW bdry */ unsigned char dsize[8]; /* initialized data " " */ unsigned char bsize[8]; /* uninitialized data " " */ unsigned char entry[8]; /* entry pt. */ unsigned char o_maxstack[8]; /* max stack size (??) */ unsigned char o_maxdata[8]; /* max data size (??) */ unsigned char o_resv3[16]; /* reserved */ } AOUTHDR; #define AOUTSZ 120 #define SMALL_AOUTSZ (0) #define AOUTHDRSZ 72 /********************** SECTION HEADER **********************/ struct external_scnhdr { char s_name[8]; /* section name */ char s_paddr[8]; /* physical address, aliased s_nlib */ char s_vaddr[8]; /* virtual address */ char s_size[8]; /* section size */ char s_scnptr[8]; /* file ptr to raw data for section */ char s_relptr[8]; /* file ptr to relocation */ char s_lnnoptr[8]; /* file ptr to line numbers */ char s_nreloc[4]; /* number of relocation entries */ char s_nlnno[4]; /* number of line number entries*/ char s_flags[4]; /* flags */ char s_pad[4]; /* padding */ }; #define SCNHDR struct external_scnhdr #define SCNHSZ 72 /********************** 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[8]; /* (physical) address of line number */ } l_addr; char l_lnno[4]; /* line number */ }; #define LINENO struct external_lineno #define LINESZ 12 /********************** 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 { char e_value[8]; char e_offset[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 { union { struct { char x_lnno[4]; /* declaration line number */ char x_size[2]; /* str/union/array size */ } x_lnsz; struct { char x_lnnoptr[8];/* ptr to fcn line */ char x_fsize[4]; /* size of function */ char x_endndx[4]; /* entry ndx past block end */ } x_fcn; } x_fcnary; } x_sym; struct { union { char x_fname[E_FILNMLEN]; struct { char x_zeroes[4]; char x_offset[4]; char x_pad[6]; } x_n; } x_n; unsigned char x_ftype[1]; unsigned char x_resv[2]; } x_file; struct { char x_exptr[8]; char x_fsize[4]; char x_endndx[4]; char x_pad[1]; } x_except; struct { unsigned char x_scnlen_lo[4]; unsigned char x_parmhash[4]; unsigned char x_snhash[2]; unsigned char x_smtyp[1]; unsigned char x_smclas[1]; unsigned char x_scnlen_hi[4]; unsigned char x_pad[1]; } x_csect; struct { char x_pad[17]; char x_auxtype[1]; } x_auxtype; }; #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) /* Values for auxtype field in XCOFF64, taken from AIX 4.3 sym.h. */ #define _AUX_EXCEPT 255 #define _AUX_FCN 254 #define _AUX_SYM 253 #define _AUX_FILE 252 #define _AUX_CSECT 251 /********************** RELOCATION DIRECTIVES **********************/ struct external_reloc { char r_vaddr[8]; char r_symndx[4]; char r_size[1]; char r_type[1]; }; #define RELOC struct external_reloc #define RELSZ 14 #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_stlen[4]; bfd_byte l_impoff[8]; bfd_byte l_stoff[8]; bfd_byte l_symoff[8]; bfd_byte l_rldoff[8]; }; #define LDHDRSZ (56) struct external_ldsym { bfd_byte l_value[8]; bfd_byte l_offset[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 (24) struct external_ldrel { bfd_byte l_vaddr[8]; bfd_byte l_rtype[2]; bfd_byte l_rsecnm[2]; bfd_byte l_symndx[4]; }; #define LDRELSZ (16) struct external_exceptab { union { bfd_byte e_symndx[4]; bfd_byte e_paddr[8]; } e_addr; bfd_byte e_lang[1]; bfd_byte e_reason[1]; }; #define EXCEPTSZ (10)