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[/] [or1k/] [branches/] [oc/] [gdb-5.0/] [include/] [coff/] [m68k.h] - Blame information for rev 1765

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1 106 markom
/*** coff information for M68K */
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#ifndef GNU_COFF_M68K_H
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#define GNU_COFF_M68K_H 1
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/********************** FILE HEADER **********************/
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struct external_filehdr {
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        char f_magic[2];        /* magic number                 */
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        char f_nscns[2];        /* number of sections           */
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        char f_timdat[4];       /* time & date stamp            */
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        char f_symptr[4];       /* file pointer to symtab       */
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        char f_nsyms[4];        /* number of symtab entries     */
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        char f_opthdr[2];       /* sizeof(optional hdr)         */
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        char f_flags[2];        /* flags                        */
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};
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/* Motorola 68000/68008/68010/68020 */
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#define MC68MAGIC       0520
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#define MC68KWRMAGIC    0520    /* writeable text segments */
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#define MC68TVMAGIC     0521
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#define MC68KROMAGIC    0521    /* readonly shareable text segments */
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#define MC68KPGMAGIC    0522    /* demand paged text segments */
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#define M68MAGIC        0210
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#define M68TVMAGIC      0211
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/* this is the magic of the Bull dpx/2 */
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#define MC68KBCSMAGIC   0526
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/* This is Lynx's all-platform magic number for executables. */
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#define LYNXCOFFMAGIC   0415
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#define OMAGIC M68MAGIC
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/* This intentionally does not include MC68KBCSMAGIC; it only includes
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   magic numbers which imply that names do not have underscores.  */
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#define M68KBADMAG(x) (((x).f_magic!=MC68MAGIC) && ((x).f_magic!=MC68KWRMAGIC) && ((x).f_magic!=MC68TVMAGIC) && \
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  ((x).f_magic!=MC68KROMAGIC) && ((x).f_magic!=MC68KPGMAGIC) && ((x).f_magic!=M68MAGIC) && ((x).f_magic!=M68TVMAGIC) && ((x).f_magic!=LYNXCOFFMAGIC) )
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/* Magic numbers for the a.out header.  */
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#define PAGEMAGICEXECSWAPPED  0407 /* executable (swapped) */
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#define PAGEMAGICPEXECSWAPPED 0410 /* pure executable (swapped) */
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#define PAGEMAGICPEXECTSHLIB  0443 /* pure executable (target shared library) */
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#define PAGEMAGICPEXECPAGED   0413 /* pure executable (paged) */
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#define FILHDR  struct external_filehdr
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#define FILHSZ  20
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/********************** AOUT "OPTIONAL HEADER" **********************/
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typedef struct
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{
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  char  magic[2];               /* type of file                         */
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  char  vstamp[2];              /* version stamp                        */
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  char  tsize[4];               /* text size in bytes, padded to FW bdry*/
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  char  dsize[4];               /* initialized data "  "                */
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  char  bsize[4];               /* uninitialized data "   "             */
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  char  entry[4];               /* entry pt.                            */
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  char  text_start[4];          /* base of text used for this file */
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  char  data_start[4];          /* base of data used for this file */
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}
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AOUTHDR;
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#define AOUTSZ 28
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#define AOUTHDRSZ 28
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/********************** SECTION HEADER **********************/
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struct external_scnhdr {
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        char            s_name[8];      /* section name                 */
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        char            s_paddr[4];     /* physical address, aliased s_nlib */
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        char            s_vaddr[4];     /* virtual address              */
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        char            s_size[4];      /* section size                 */
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        char            s_scnptr[4];    /* file ptr to raw data for section */
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        char            s_relptr[4];    /* file ptr to relocation       */
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        char            s_lnnoptr[4];   /* file ptr to line numbers     */
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        char            s_nreloc[2];    /* number of relocation entries */
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        char            s_nlnno[2];     /* number of line number entries*/
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        char            s_flags[4];     /* flags                        */
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};
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/*
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 * names of "special" sections
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 */
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#define _TEXT   ".text"
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#define _DATA   ".data"
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#define _BSS    ".bss"
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#define _COMMENT ".comment"
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#define SCNHDR  struct external_scnhdr
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#define SCNHSZ  40
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/********************** LINE NUMBERS **********************/
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/* 1 line number entry for every "breakpointable" source line in a section.
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 * Line numbers are grouped on a per function basis; first entry in a function
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 * grouping will have l_lnno = 0 and in place of physical address will be the
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 * symbol table index of the function name.
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 */
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struct external_lineno {
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        union {
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                char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
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                char l_paddr[4];        /* (physical) address of line number    */
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        } l_addr;
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        char l_lnno[2]; /* line number          */
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};
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#define LINENO  struct external_lineno
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#define LINESZ  6
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/********************** SYMBOLS **********************/
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#define E_SYMNMLEN      8       /* # characters in a symbol name        */
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#define E_FILNMLEN      14      /* # characters in a file name          */
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#define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
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struct external_syment
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{
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  union {
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    char e_name[E_SYMNMLEN];
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    struct {
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      char e_zeroes[4];
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      char e_offset[4];
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    } e;
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  } e;
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  char e_value[4];
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  char e_scnum[2];
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  char e_type[2];
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  char e_sclass[1];
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  char e_numaux[1];
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};
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#define N_BTMASK        (017)
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#define N_TMASK         (060)
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#define N_BTSHFT        (4)
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#define N_TSHIFT        (2)
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union external_auxent {
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        struct {
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                char x_tagndx[4];       /* str, un, or enum tag indx */
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                union {
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                        struct {
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                            char  x_lnno[2]; /* declaration line number */
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                            char  x_size[2]; /* str/union/array size */
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                        } x_lnsz;
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                        char x_fsize[4];        /* size of function */
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                } x_misc;
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                union {
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                        struct {                /* if ISFCN, tag, or .bb */
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                            char x_lnnoptr[4];  /* ptr to fcn line # */
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                            char x_endndx[4];   /* entry ndx past block end */
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                        } x_fcn;
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                        struct {                /* if ISARY, up to 4 dimen. */
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                            char x_dimen[E_DIMNUM][2];
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                        } x_ary;
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                } x_fcnary;
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                char x_tvndx[2];                /* tv index */
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        } x_sym;
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        union {
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                char x_fname[E_FILNMLEN];
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                struct {
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                        char x_zeroes[4];
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                        char x_offset[4];
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                } x_n;
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        } x_file;
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        struct {
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                char x_scnlen[4];                       /* section length */
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                char x_nreloc[2];       /* # relocation entries */
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                char x_nlinno[2];       /* # line numbers */
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        } x_scn;
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        struct {
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                char x_tvfill[4];       /* tv fill value */
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                char x_tvlen[2];        /* length of .tv */
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                char x_tvran[2][2];     /* tv range */
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        } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
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};
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#define SYMENT  struct external_syment
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#define SYMESZ  18      
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#define AUXENT  union external_auxent
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#define AUXESZ  18
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/********************** RELOCATION DIRECTIVES **********************/
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struct external_reloc {
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  char r_vaddr[4];
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  char r_symndx[4];
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  char r_type[2];
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#ifdef M68K_COFF_OFFSET
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  char r_offset[4];
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#endif
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};
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#define RELOC struct external_reloc
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#ifdef M68K_COFF_OFFSET
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#define RELSZ 14
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#else
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#define RELSZ 10
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#endif
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#endif /* GNU_COFF_M68K_H */

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