diff options
Diffstat (limited to 'include/coff/m68k.h')
| -rw-r--r-- | include/coff/m68k.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/include/coff/m68k.h b/include/coff/m68k.h new file mode 100644 index 0000000..022f310 --- /dev/null +++ b/include/coff/m68k.h @@ -0,0 +1,225 @@ +/*** coff information for M68K */ + +#ifndef GNU_COFF_M68K_H +#define GNU_COFF_M68K_H 1 + +/********************** 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 + +/* this is the magic of the Bull dpx/2 */ +#define MC68KBCSMAGIC 0526 + +/* This is Lynx's all-platform magic number for executables. */ + +#define LYNXCOFFMAGIC 0415 + +#define OMAGIC M68MAGIC + +/* This intentionally does not include MC68KBCSMAGIC; it only includes + magic numbers which imply that names do not have underscores. */ +#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!=LYNXCOFFMAGIC) ) + +/* Magic numbers for the a.out header. */ + +#define PAGEMAGICEXECSWAPPED 0407 /* executable (swapped) */ +#define PAGEMAGICPEXECSWAPPED 0410 /* pure executable (swapped) */ +#define PAGEMAGICPEXECTSHLIB 0443 /* pure executable (target shared library) */ +#define PAGEMAGICPEXECPAGED 0413 /* pure executable (paged) */ + +#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 */ +} +AOUTHDR; + +#define AOUTSZ 28 +#define AOUTHDRSZ 28 + + +/********************** 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 */ +}; + +/* + * names of "special" sections + */ +#define _TEXT ".text" +#define _DATA ".data" +#define _BSS ".bss" +#define _COMMENT ".comment" + +#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 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_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 + +#endif /* GNU_COFF_M68K_H */ |