diff options
Diffstat (limited to 'include/coff/rs6k64.h')
| -rw-r--r-- | include/coff/rs6k64.h | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/include/coff/rs6k64.h b/include/coff/rs6k64.h new file mode 100644 index 000000000..80d8e4c0e --- /dev/null +++ b/include/coff/rs6k64.h @@ -0,0 +1,236 @@ +/* IBM RS/6000 "XCOFF64" file definitions for BFD. + Copyright (C) 2000 Free Software Foundation, Inc. */ + +/********************** 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 /* readonly text segments and TOC, XCOFF64 */ + +#define BADMAG(x) ((x).f_magic != U803XTOCMAGIC) + +#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 + +#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[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 */ +}; + +/* + * 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 72 + +/* 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[8];/* 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 +{ + union { + char e_value[8]; + } e; + 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; + + union { + char x_fname[E_FILNMLEN]; + struct { + char x_zeroes[4]; + char x_offset[4]; + char x_pad[6]; + unsigned char x_ftype[1]; + unsigned char x_resv[2]; + } x_n; + } 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 |