/* Copyright 1990, 1992 Free Software Foundation, Inc. * * This code was donated by Intel Corp. * * This is a coff version of a.out.h to support 80960 debugging from * a Unix (possibly BSD) host. It's used by: * o gdb960 to symbols in code generated with Intel (non-GNU) tools. * o comm960 to convert a b.out file to a coff file for download. */ /********************** FILE HEADER **********************/ struct filehdr { unsigned short f_magic; /* magic number */ unsigned short f_nscns; /* number of sections */ long f_timdat; /* time & date stamp */ long f_symptr; /* file pointer to symtab */ long f_nsyms; /* number of symtab entries */ unsigned short f_opthdr; /* sizeof(optional hdr) */ unsigned short f_flags; /* flags */ }; /* Bits for f_flags: * F_RELFLG relocation info stripped from file * F_EXEC file is executable (no unresolved externel references) * F_LNNO line nunbers stripped from file * F_LSYMS local symbols stripped from file * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) */ #define F_RELFLG 0000001 #define F_EXEC 0000002 #define F_LNNO 0000004 #define F_LSYMS 0000010 #define F_AR32WR 0000400 /* * Intel 80960 (I960) processor flags. * F_I960TYPE == mask for processor type field. */ #define F_I960TYPE 0170000 #define F_I960CA 0010000 #define F_I960FLOAT 0020000 #define F_I960BA 0030000 #define F_I960XA 0040000 /* * i80960 Magic Numbers */ #define I960ROMAGIC 0540 /* read-only text segments */ #define I960RWMAGIC 0541 /* read-write text segments */ #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC)) #define FILHDR struct filehdr #define FILHSZ sizeof(FILHDR) /********************** AOUT "OPTIONAL HEADER" **********************/ typedef struct { unsigned long phys_addr; unsigned long bitarray; } TAGBITS; typedef struct aouthdr { short magic; /* type of file */ short vstamp; /* version stamp */ unsigned long tsize; /* text size in bytes, padded to FW bdry*/ unsigned long dsize; /* initialized data " " */ unsigned long bsize; /* uninitialized data " " */ #if U3B unsigned long dum1; unsigned long dum2; /* pad to entry point */ #endif unsigned long entry; /* entry pt. */ unsigned long text_start; /* base of text used for this file */ unsigned long data_start; /* base of data used for this file */ unsigned long tagentries; /* 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))) /********************** STORAGE CLASSES **********************/ #define C_EFCN -1 /* physical end of function */ #define C_NULL 0 #define C_AUTO 1 /* automatic variable */ #define C_EXT 2 /* external symbol */ #define C_STAT 3 /* static */ #define C_REG 4 /* register variable */ #define C_EXTDEF 5 /* external definition */ #define C_LABEL 6 /* label */ #define C_ULABEL 7 /* undefined label */ #define C_MOS 8 /* member of structure */ #define C_ARG 9 /* function argument */ #define C_STRTAG 10 /* structure tag */ #define C_MOU 11 /* member of union */ #define C_UNTAG 12 /* union tag */ #define C_TPDEF 13 /* type definition */ #define C_USTATIC 14 /* undefined static */ #define C_ENTAG 15 /* enumeration tag */ #define C_MOE 16 /* member of enumeration */ #define C_REGPARM 17 /* register parameter */ #define C_FIELD 18 /* bit field */ #define C_BLOCK 100 /* ".bb" or ".eb" */ #define C_FCN 101 /* ".bf" or ".ef" */ #define C_EOS 102 /* end of structure */ #define C_FILE 103 /* file name */ #define C_LINE 104 /* line # reformatted as symbol table entry */ #define C_ALIAS 105 /* duplicate tag */ #define C_HIDDEN 106 /* ext symbol in dmert public lib */ /* New storage classes for 80960 */ #define C_SCALL 107 /* Procedure reachable via system call */ #define C_LEAFPROC 108 /* Leaf procedure, "call" via BAL */ /********************** SECTION HEADER **********************/ struct scnhdr { char s_name[8]; /* section name */ long s_paddr; /* physical address, aliased s_nlib */ long s_vaddr; /* virtual address */ long s_size; /* section size */ long s_scnptr; /* file ptr to raw data for section */ long s_relptr; /* file ptr to relocation */ long s_lnnoptr; /* file ptr to line numbers */ unsigned short s_nreloc; /* number of relocation entries */ unsigned short s_nlnno; /* number of line number entries*/ long s_flags; /* flags */ unsigned long s_align; /* section alignment */ }; /* * names of "special" sections */ #define _TEXT ".text" #define _DATA ".data" #define _BSS ".bss" /* * s_flags "type" */ #define STYP_TEXT 0x20 /* section contains text only */ #define STYP_DATA 0x40 /* section contains data only */ #define STYP_BSS 0x80 /* section contains bss only */ #define SCNHDR struct scnhdr #define SCNHSZ sizeof(SCNHDR) /********************** 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 lineno{ union { long l_symndx; /* function name symbol index, iff l_lnno == 0*/ long l_paddr; /* (physical) address of line number */ } l_addr; unsigned short l_lnno; /* line number */ char padding[2]; /* force alignment */ }; #define LINENO struct lineno #define LINESZ sizeof(LINENO) /********************** SYMBOLS **********************/ #define SYMNMLEN 8 /* # characters in a symbol name */ #define FILNMLEN 14 /* # characters in a file name */ #define DIMNUM 4 /* # array dimensions in auxiliary entry */ struct syment { union { char _n_name[SYMNMLEN]; /* old COFF version */ struct { long _n_zeroes; /* new == 0 */ long _n_offset; /* offset into string table */ } _n_n; char *_n_nptr[2]; /* allows for overlaying */ } _n; long n_value; /* value of symbol */ short n_scnum; /* section number */ char pad1[2]; /* force alignment */ unsigned long n_type; /* type and derived type */ char n_sclass; /* storage class */ char n_numaux; /* number of aux. entries */ char pad2[2]; /* force alignment */ }; #define n_name _n._n_name #define n_zeroes _n._n_n._n_zeroes #define n_offset _n._n_n._n_offset /* * Relocatable symbols have number of the section in which they are defined, * or one of the following: */ #define N_UNDEF 0 /* undefined symbol */ #define N_ABS -1 /* value of symbol is absolute */ #define N_DEBUG -2 /* debugging symbol -- symbol value is meaningless */ /* * Type of a symbol, in low 4 bits of the word */ #define T_NULL 0 #define T_VOID 1 /* function argument (only used by compiler) */ #define T_CHAR 2 /* character */ #define T_SHORT 3 /* short integer */ #define T_INT 4 /* integer */ #define T_LONG 5 /* long integer */ #define T_FLOAT 6 /* floating point */ #define T_DOUBLE 7 /* double word */ #define T_STRUCT 8 /* structure */ #define T_UNION 9 /* union */ #define T_ENUM 10 /* enumeration */ #define T_MOE 11 /* member of enumeration*/ #define T_UCHAR 12 /* unsigned character */ #define T_USHORT 13 /* unsigned short */ #define T_UINT 14 /* unsigned integer */ #define T_ULONG 15 /* unsigned long */ #define T_LNGDBL 16 /* long double */ /* * derived types */ #define DT_PTR 1 /* pointer */ #define DT_FCN 2 /* function */ #define DT_ARY 3 /* array */ #define N_BTMASK 037 #define N_TMASK 0140 #define N_BTSHFT 5 #define N_TSHIFT 2 #define BTYPE(x) ((x) & N_BTMASK) #define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT)) #define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT)) #define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT)) #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) union auxent { struct { long x_tagndx; /* str, un, or enum tag indx */ union { struct { unsigned short x_lnno; /* declaration line number */ unsigned short x_size; /* str/union/array size */ } x_lnsz; long x_fsize; /* size of function */ } x_misc; union { struct { /* if ISFCN, tag, or .bb */ long x_lnnoptr; /* ptr to fcn line # */ long x_endndx; /* entry ndx past block end */ } x_fcn; struct { /* if ISARY, up to 4 dimen. */ unsigned short x_dimen[DIMNUM]; } x_ary; } x_fcnary; unsigned short x_tvndx; /* tv index */ } x_sym; union { char x_fname[FILNMLEN]; struct { long x_zeroes; long x_offset; } x_n; } x_file; struct { long x_scnlen; /* section length */ unsigned short x_nreloc; /* # relocation entries */ unsigned short x_nlinno; /* # line numbers */ } x_scn; struct { long x_stdindx; } x_sc; struct { unsigned long x_balntry; } x_bal; char a[sizeof(struct syment)]; /* force auxent/syment sizes to match */ }; #define SYMENT struct syment #define SYMESZ sizeof(SYMENT) #define AUXENT union auxent #define AUXESZ sizeof(AUXENT) #if VAX || I960 # define _ETEXT "_etext" #else # define _ETEXT "etext" #endif /********************** RELOCATION DIRECTIVES **********************/ struct reloc { long r_vaddr; /* Virtual address of reference */ long r_symndx; /* Index into symbol table */ unsigned short r_type; /* Relocation type */ char pad[2]; /* Unused */ }; /* Only values of r_type GNU/960 cares about */ #define R_RELLONG 17 /* Direct 32-bit relocation */ #define R_IPRMED 25 /* 24-bit ip-relative relocation */ #define R_OPTCALL 27 /* 32-bit optimizable call (leafproc/sysproc) */ #define RELOC struct reloc #define RELSZ sizeof(RELOC)