/*** coff information for 80960. Origins: Intel corp, natch. */ /* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */ /********************** 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 */ }; #define OMAGIC (0407) /* old impure format. data immediately follows text. both sections are rw. */ #define NMAGIC (0410) /* split i&d, read-only text */ /* * Intel 80960 (I960) processor flags. * F_I960TYPE == mask for processor type field. */ #define F_I960TYPE (0xf000) #define F_I960CORE (0x1000) #define F_I960KB (0x2000) #define F_I960SB (0x2000) #define F_I960MC (0x3000) #define F_I960XA (0x4000) #define F_I960CA (0x5000) #define F_I960KA (0x6000) #define F_I960SA (0x6000) /** i80960 Magic Numbers */ #define I960ROMAGIC (0x160) /* read-only text segments */ #define I960RWMAGIC (0x161) /* read-write text segments */ #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC)) #define FILHDR struct external_filehdr #define FILHSZ 20 /********************** AOUT "OPTIONAL HEADER" **********************/ typedef struct { unsigned long phys_addr; unsigned long bitarray; } TAGBITS; 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 tagentries[4]; /* number of tag entries to follow */ } AOUTHDR; /* return a pointer to the tag bits array */ #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1)) /* compute size of a header */ /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/ #define AOUTSZ (sizeof(AOUTHDR)) /********************** 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 */ char s_align[4]; /* section alignment */ }; #define SCNHDR struct external_scnhdr #define SCNHSZ sizeof(SCNHDR) /* * names of "special" sections */ #define _TEXT ".text" #define _DATA ".data" #define _BSS ".bss" /********************** 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 */ char padding[2]; /* force alignment */ }; #define LINENO struct external_lineno #define LINESZ 8 /********************** 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_flags[2]; char e_type[4]; char e_sclass[1]; char e_numaux[1]; char pad2[2]; }; #define N_BTMASK (0x1f) #define N_TMASK (0x60) #define N_BTSHFT (5) #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)) */ /****************************************** * I960-specific *2nd* aux. entry formats ******************************************/ struct { /* This is a very old typo that keeps getting propagated. */ #define x_stdindx x_stindx char x_stindx[4]; /* sys. table entry */ } x_sc; /* system call entry */ struct { char x_balntry[4]; /* BAL entry point */ } x_bal; /* BAL-callable function */ struct { char x_timestamp[4]; /* time stamp */ char x_idstring[20]; /* producer identity string */ } x_ident; /* Producer ident info */ }; #define SYMENT struct external_syment #define SYMESZ sizeof(SYMENT) /* FIXME - calc by hand */ #define AUXENT union external_auxent #define AUXESZ sizeof(AUXENT) /* FIXME - calc by hand */ # define _ETEXT "_etext" /********************** RELOCATION DIRECTIVES **********************/ struct external_reloc { char r_vaddr[4]; char r_symndx[4]; char r_type[2]; char pad[2]; }; /* Relevent values for r_type and i960. Would someone please document them */ #define RELOC struct external_reloc #define RELSZ 12 #define DEFAULT_DATA_SECTION_ALIGNMENT 4 #define DEFAULT_BSS_SECTION_ALIGNMENT 4 #define DEFAULT_TEXT_SECTION_ALIGNMENT 16 /* For new sections we havn't heard of before */ #define DEFAULT_SECTION_ALIGNMENT 4