| /* IBM RS/6000 "XCOFF" file definitions for BFD. | |
| Copyright (C) 1990, 1991 Free Software Foundation, Inc. | |
| FIXME: Can someone provide a transliteration of this name into ASCII? | |
| Using the following chars caused a compiler warning on HIUX (so I replaced | |
| them with octal escapes), and isn't useful without an understanding of what | |
| character set it is. | |
| Written by Mimi Ph\373\364ng-Th\345o V\365 of IBM | |
| and John Gilmore of Cygnus Support. */ | |
| /********************** 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_resv2[12]; /* reserved */ | |
| } | |
| AOUTHDR; | |
| #define AOUTSZ 72 | |
| #define SMALL_AOUTSZ (28) | |
| #define AOUTHDRSZ 72 | |
| #define RS6K_AOUTHDR_OMAGIC 0x0107 /* old: text & data writeable */ | |
| #define RS6K_AOUTHDR_NMAGIC 0x0108 /* new: text r/o, data r/w */ | |
| #define RS6K_AOUTHDR_ZMAGIC 0x010B /* paged: text r/o, both page-aligned */ | |
| /********************** 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 */ | |
| }; | |
| /* | |
| * names of "special" sections | |
| */ | |
| #define _TEXT ".text" | |
| #define _DATA ".data" | |
| #define _BSS ".bss" | |
| #define _PAD ".pad" | |
| #define _LOADER ".loader" | |
| #define SCNHDR struct external_scnhdr | |
| #define SCNHSZ 40 | |
| /* XCOFF uses a special .loader section with type STYP_LOADER. */ | |
| #define STYP_LOADER 0x1000 | |
| /* XCOFF uses a special .debug section with type STYP_DEBUG. */ | |
| #define STYP_DEBUG 0x2000 | |
| /* XCOFF handles line number or relocation overflow by creating | |
| another section header with STYP_OVRFLO set. */ | |
| #define STYP_OVRFLO 0x8000 | |
| /********************** 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_tagndx[4]; /* str, un, or enum tag indx */ | |
| union { | |
| struct { | |
| char x_lnno[2]; /* declaration line number */ | |
| char x_size[2]; /* str/union/array size */ | |
| } x_lnsz; | |
| char x_fsize[4]; /* size of function */ | |
| } x_misc; | |
| union { | |
| struct { /* if ISFCN, tag, or .bb */ | |
| char x_lnnoptr[4]; /* ptr to fcn line # */ | |
| char x_endndx[4]; /* entry ndx past block end */ | |
| } x_fcn; | |
| struct { /* if ISARY, up to 4 dimen. */ | |
| char x_dimen[E_DIMNUM][2]; | |
| } x_ary; | |
| } x_fcnary; | |
| char x_tvndx[2]; /* tv index */ | |
| } x_sym; | |
| union { | |
| char x_fname[E_FILNMLEN]; | |
| struct { | |
| char x_zeroes[4]; | |
| char x_offset[4]; | |
| } x_n; | |
| } x_file; | |
| struct { | |
| char x_scnlen[4]; /* section length */ | |
| char x_nreloc[2]; /* # relocation entries */ | |
| char x_nlinno[2]; /* # line numbers */ | |
| } x_scn; | |
| struct { | |
| char x_tvfill[4]; /* tv fill value */ | |
| char x_tvlen[2]; /* length of .tv */ | |
| char x_tvran[2][2]; /* tv range */ | |
| } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
| struct { | |
| unsigned char x_scnlen[4]; | |
| unsigned char x_parmhash[4]; | |
| unsigned char x_snhash[2]; | |
| unsigned char x_smtyp[1]; | |
| unsigned char x_smclas[1]; | |
| unsigned char x_stab[4]; | |
| unsigned char x_snstab[2]; | |
| } x_csect; | |
| }; | |
| #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 |