/*** 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) */