| /*** coff information for Apollo M68K */ |
| |
| /********************** 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 */ |
| }; |
| |
| |
| /* Motorola 68000/68008/68010/68020 */ |
| #define MC68MAGIC 0520 |
| #define MC68KWRMAGIC 0520 /* writeable text segments */ |
| #define MC68TVMAGIC 0521 |
| #define MC68KROMAGIC 0521 /* readonly shareable text segments */ |
| #define MC68KPGMAGIC 0522 /* demand paged text segments */ |
| #define M68MAGIC 0210 |
| #define M68TVMAGIC 0211 |
| |
| /* Apollo 68000-based machines have a different magic number. This comes |
| * from /usr/include/apollo/filehdr.h |
| */ |
| #define APOLLOM68KMAGIC 0627 |
| |
| #define OMAGIC M68MAGIC |
| #define M68KBADMAG(x) (((x).f_magic!=MC68MAGIC) && ((x).f_magic!=MC68KWRMAGIC) && ((x).f_magic!=MC68TVMAGIC) && \ |
| ((x).f_magic!=MC68KROMAGIC) && ((x).f_magic!=MC68KPGMAGIC) && ((x).f_magic!=M68MAGIC) && ((x).f_magic!=M68TVMAGIC) && \ |
| ((x).f_magic!=APOLLOM68KMAGIC) ) |
| |
| |
| #define FILHDR struct external_filehdr |
| #define FILHSZ 20 |
| |
| |
| /********************** AOUT "OPTIONAL HEADER" **********************/ |
| |
| typedef struct |
| { |
| char magic[2]; /* type of file */ |
| char vstamp[2]; /* version stamp */ |
| char tsize[4]; /* text size in bytes, padded to FW bdry*/ |
| char dsize[4]; /* initialized data " " */ |
| char bsize[4]; /* uninitialized data " " */ |
| char entry[4]; /* entry pt. */ |
| char text_start[4]; /* base of text used for this file */ |
| char data_start[4]; /* base of data used for this file */ |
| char o_sri[4]; /* Apollo specific - .sri data pointer */ |
| char o_inlib[4]; /* Apollo specific - .inlib data pointer */ |
| char vid[8]; /* Apollo specific - 64 bit version ID */ |
| } |
| AOUTHDR; |
| |
| #define APOLLO_COFF_VERSION_NUMBER 1 /* the value of the aouthdr magic */ |
| #define AOUTHDRSZ 44 |
| #define AOUTSZ 44 |
| |
| |
| |
| /********************** SECTION HEADER **********************/ |
| |
| struct external_scnhdr { |
| /* Apollo allow for larger section names by allowing it to be in |
| * the string table. |
| */ |
| char s_name[8]; |
| 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 */ |
| }; |
| |
| /* If s_zeores is all zeroes, s_offset gives the real location of the name |
| * in the string table. |
| */ |
| |
| #define s_zeroes section_name.s_name |
| #define s_offset (section_name.s_name+4) |
| |
| /* |
| * names of "special" sections |
| */ |
| #define _TEXT ".text" |
| #define _DATA ".data" |
| #define _BSS ".bss" |
| #define _TV ".tv" |
| #define _INIT ".init" |
| #define _FINI ".fini" |
| #define _LINES ".lines" |
| #define _BLOCKS ".blocks" |
| #define _SRI ".sri" /* Static Resource Information (systype, |
| et al.) */ |
| #define _MIR ".mir" /* Module Information Records */ |
| #define _APTV ".aptv" /* Apollo-style transfer vectors. */ |
| #define _INLIB ".inlib" /* Shared Library information */ |
| #define _RWDI ".rwdi" /* Read/write data initialization directives for |
| compressed sections */ |
| #define _UNWIND ".unwind" /* Stack unwind information */ |
| |
| #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_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)) */ |
| |
| |
| }; |
| |
| #define SYMENT struct external_syment |
| #define SYMESZ 18 |
| #define AUXENT union external_auxent |
| #define AUXESZ 18 |
| |
| |
| |
| /********************** RELOCATION DIRECTIVES **********************/ |
| |
| |
| struct external_reloc { |
| char r_vaddr[4]; |
| char r_symndx[4]; |
| char r_type[2]; |
| #ifdef M68K_COFF_OFFSET |
| char r_offset[4]; |
| #endif |
| |
| }; |
| |
| |
| #define RELOC struct external_reloc |
| |
| #ifdef M68K_COFF_OFFSET |
| #define RELSZ 14 |
| #else |
| #define RELSZ 10 |
| #endif |
| |
| /* Apollo specific STYP flags */ |
| |
| #define STYP_RELOCATED_NOT_LOADED 0x00010000 /* Section is relocated normally during linking, but need |
| not be loaded during program execution */ |
| #define STYP_DEBUG 0x00020000 /* debug section */ |
| #define STYP_OVERLAY 0x00040000 /* Section is overlayed */ |
| #define STYP_INSTRUCTION 0x00200000 /* Section contains executable code */ |
| |
| #define STYP_ZERO 0x00800000 /* Section is initialized to zero */ |
| #define STYP_INSTALLED 0x02000000 /* Section should be installable in KGT */ |
| #define STYP_LOOK_INSTALLED 0x04000000 /* Look for section in KGT */ |
| #define STYP_SECALIGN1 0x08000000 /* Specially aligned section */ |
| #define STYP_SECALIGN2 0x10000000 /* " " " */ |
| #define STYP_COMPRESSED 0x20000000 /* No section data per se (s_scnptr = 0), but there are |
| initialization directives for it in .rwdi section |
| (used in conjunction with STYP_BSS) */ |