/* IBM RS/6000 "XCOFF" file definitions for BFD. Copyright (C) 1990-2021 Free Software Foundation, Inc. Written by Mimi Phuong-Thao Vo of IBM and John Gilmore of Cygnus Support. 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[4]; /* file pointer to symtab */ char f_nsyms[4]; /* number of symtab entries */ char f_opthdr[2]; /* sizeof(optional hdr) */ char f_flags[2]; /* flags */ }; /* IBM RS/6000 */ #define U802WRMAGIC 0730 /* writeable text segments **chh** */ #define U802ROMAGIC 0735 /* readonly sharable text segments */ #define U802TOCMAGIC 0737 /* readonly text segments and TOC */ #define BADMAG(x) \ ((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \ (x).f_magic != U802TOCMAGIC) #define FILHDR struct external_filehdr #define FILHSZ 20 /********************** AOUT "OPTIONAL HEADER" **********************/ typedef struct { unsigned char magic[2]; /* type of file */ unsigned char vstamp[2]; /* version stamp */ unsigned char tsize[4]; /* text size in bytes, padded to FW bdry */ unsigned char dsize[4]; /* initialized data " " */ unsigned char bsize[4]; /* uninitialized data " " */ unsigned char entry[4]; /* entry pt. */ unsigned char text_start[4]; /* base of text used for this file */ unsigned char data_start[4]; /* base of data used for this file */ unsigned char o_toc[4]; /* 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_maxstack[4]; /* max stack size (??) */ unsigned char o_maxdata[4]; /* max data size (??) */ unsigned char o_debugger[4]; /* reserved */ unsigned char o_textpsize[1]; /* text page size */ unsigned char o_datapsize[1]; /* data page size */ unsigned char o_stackpsize[1]; /* stack page size */ unsigned char o_flags[1]; /* Flags and TLS alignment */ unsigned char o_sntdata[2]; /* section number of .tdata section */ unsigned char o_sntbss[2]; /* section number of .tbss section */ } AOUTHDR; #define AOUTSZ 72 #define SMALL_AOUTSZ (28) #define AOUTHDRSZ 72 /********************** SECTION HEADER **********************/ struct external_scnhdr { char s_name[8]; /* section name */ char s_paddr[4]; /* physical address, aliased s_nlib */ char s_vaddr[4]; /* virtual address */ char s_size[4]; /* section size */ char s_scnptr[4]; /* file ptr to raw data for section */ char s_relptr[4]; /* file ptr to relocation */ char s_lnnoptr[4]; /* file ptr to line numbers */ char s_nreloc[2]; /* number of relocation entries */ char s_nlnno[2]; /* number of line number entries*/ char s_flags[4]; /* flags */ }; #define SCNHDR struct external_scnhdr #define SCNHSZ 40 /********************** 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[4]; /* (physical) address of line number */ } l_addr; char l_lnno[2]; /* line number */ }; #define LINENO struct external_lineno #define LINESZ 6 /********************** 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 { union { char e_name[E_SYMNMLEN]; struct { char e_zeroes[4]; char e_offset[4]; } e; } e; char e_value[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 { char x_pad1[2]; char x_lnno[4]; /* Source line number */ char x_pad[12]; } x_sym; struct { char x_exptr[4]; char x_fsize[4]; char x_lnnoptr[4]; char x_endndx[4]; char x_pad[1]; } x_fcn; struct { union { char x_fname[E_FILNMLEN]; struct { char x_zeroes[4]; char x_offset[4]; } x_n; } x_n; char x_ftype[1]; } x_file; struct { char x_scnlen[4]; /* section length */ char x_nreloc[2]; /* # relocation entries */ char x_nlinno[2]; /* # line numbers */ char x_pad[10]; } x_scn; struct { char x_scnlen[4]; char x_parmhash[4]; char x_snhash[2]; char x_smtyp[1]; char x_smclas[1]; char x_stab[4]; char x_snstab[2]; } x_csect; struct { char x_scnlen[4]; char x_pad1[4]; char x_nreloc[4]; char x_pad2[6]; } x_sect; }; #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) /********************** RELOCATION DIRECTIVES **********************/ struct external_reloc { char r_vaddr[4]; char r_symndx[4]; char r_size[1]; char r_type[1]; }; #define RELOC struct external_reloc #define RELSZ 10 #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_impoff[4]; bfd_byte l_stlen[4]; bfd_byte l_stoff[4]; }; #define LDHDRSZ (8 * 4) struct external_ldsym { union { bfd_byte _l_name[E_SYMNMLEN]; struct { bfd_byte _l_zeroes[4]; bfd_byte _l_offset[4]; } _l_l; } _l; bfd_byte l_value[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 (8 + 3 * 4 + 2 + 2) struct external_ldrel { bfd_byte l_vaddr[4]; bfd_byte l_symndx[4]; bfd_byte l_rtype[2]; bfd_byte l_rsecnm[2]; }; #define LDRELSZ (2 * 4 + 2 * 2) struct external_exceptab { union { bfd_byte e_symndx[4]; bfd_byte e_paddr[4]; } e_addr; bfd_byte e_lang[1]; bfd_byte e_reason[1]; }; #define EXCEPTSZ (4 + 2) /******************** Core files *************************/ struct external_core_dumpx { unsigned char c_signo[1]; unsigned char c_flag[1]; unsigned char c_entries[2]; unsigned char c_version[4]; unsigned char c_fdsinfox[8]; unsigned char c_loader[8]; unsigned char c_lsize[8]; unsigned char c_n_thr[4]; unsigned char c_reserved0[4]; unsigned char c_thr[8]; unsigned char c_segs[8]; unsigned char c_segregion[8]; unsigned char c_stack[8]; unsigned char c_stackorg[8]; unsigned char c_size[8]; unsigned char c_data[8]; unsigned char c_dataorg[8]; unsigned char c_datasize[8]; unsigned char c_sdorg[8]; unsigned char c_sdsize[8]; unsigned char c_vmmregions[8]; unsigned char c_vmm[8]; unsigned char c_impl[4]; unsigned char c_pad[4]; unsigned char c_cprs[8]; unsigned char c_reserved[7 * 8]; /* Followed by: - context of the faulting thread. - user structure. */ }; /* Core file verion. */ #define CORE_DUMPX_VERSION 0x0feeddb1 #define CORE_DUMPXX_VERSION 0x0feeddb2 struct external_ld_info32 { unsigned char ldinfo_next[4]; unsigned char core_offset[4]; unsigned char ldinfo_textorg[4]; unsigned char ldinfo_textsize[4]; unsigned char ldinfo_dataorg[4]; unsigned char ldinfo_datasize[4]; unsigned char ldinfo_filename[2]; };