1 /*** coff information for 88k bcs */
3 /********************** FILE HEADER **********************/
4 struct external_filehdr
{
5 char f_magic
[2]; /* magic number */
6 char f_nscns
[2]; /* number of sections */
7 char f_timdat
[4]; /* time & date stamp */
8 char f_symptr
[4]; /* file pointer to symtab */
9 char f_nsyms
[4]; /* number of symtab entries */
10 char f_opthdr
[2]; /* sizeof(optional hdr) */
11 char f_flags
[2]; /* flags */
14 #define MC88MAGIC 0540 /* 88k BCS executable */
15 #define MC88DMAGIC 0541 /* DG/UX executable */
16 #define MC88OMAGIC 0555 /* Object file */
18 #define MC88BADMAG(x) (((x).f_magic!=MC88MAGIC) &&((x).f_magic!=MC88DMAGIC) && ((x).f_magic != MC88OMAGIC))
20 #define FILHDR struct external_filehdr
21 #define FILHSZ sizeof(FILHDR)
24 /********************** AOUT "OPTIONAL HEADER" **********************/
27 #define PAGEMAGIC3 0414 /* Split i&d, zero mapped */
28 #define PAGEMAGICBCS 0413
33 char magic
[2]; /* type of file */
34 char vstamp
[2]; /* version stamp */
35 char tsize
[4]; /* text size in bytes, padded to FW bdry*/
36 char dsize
[4]; /* initialized data " " */
37 char bsize
[4]; /* uninitialized data " " */
38 char entry
[4]; /* entry pt. */
39 char text_start
[4]; /* base of text used for this file */
40 char data_start
[4]; /* base of data used for this file */
45 /* compute size of a header */
47 #define AOUTSZ (sizeof(AOUTHDR))
49 /********************** STORAGE CLASSES **********************/
51 #define C_EFCN -1 /* physical end of function */
53 #define C_AUTO 1 /* automatic variable */
54 #define C_EXT 2 /* external symbol */
55 #define C_STAT 3 /* static */
56 #define C_REG 4 /* register variable */
57 #define C_EXTDEF 5 /* external definition */
58 #define C_LABEL 6 /* label */
59 #define C_ULABEL 7 /* undefined label */
60 #define C_MOS 8 /* member of structure */
61 #define C_ARG 9 /* function argument */
62 #define C_STRTAG 10 /* structure tag */
63 #define C_MOU 11 /* member of union */
64 #define C_UNTAG 12 /* union tag */
65 #define C_TPDEF 13 /* type definition */
66 #define C_USTATIC 14 /* undefined static */
67 #define C_ENTAG 15 /* enumeration tag */
68 #define C_MOE 16 /* member of enumeration */
69 #define C_REGPARM 17 /* register parameter */
70 #define C_FIELD 18 /* bit field */
71 #define C_BLOCK 100 /* ".bb" or ".eb" */
72 #define C_FCN 101 /* ".bf" or ".ef" */
73 #define C_EOS 102 /* end of structure */
74 #define C_FILE 103 /* file name */
75 #define C_LINE 104 /* line # reformatted as symbol table entry */
76 #define C_ALIAS 105 /* duplicate tag */
77 #define C_HIDDEN 106 /* ext symbol in dmert public lib */
78 #define C_SHADOW 107 /* shadow symbol */
79 #define C_VERSION 108 /* coff version symbol */
82 /********************** SECTION HEADER **********************/
85 struct external_scnhdr
87 char s_name
[8]; /* section name */
88 char s_paddr
[4]; /* physical address, aliased s_nlib */
89 char s_vaddr
[4]; /* virtual address */
90 char s_size
[4]; /* section size */
91 char s_scnptr
[4]; /* file ptr to raw data for section */
92 char s_relptr
[4]; /* file ptr to relocation */
93 char s_lnnoptr
[4]; /* file ptr to line numbers */
94 char s_nreloc
[4]; /* number of relocation entries */
95 char s_nlnno
[4]; /* number of line number entries*/
96 char s_flags
[4]; /* flags */
100 #define SCNHDR struct external_scnhdr
101 #define SCNHSZ sizeof(SCNHDR)
104 * names of "special" sections
106 #define _TEXT ".text"
107 #define _DATA ".data"
110 /********************** LINE NUMBERS **********************/
112 /* 1 line number entry for every "breakpointable" source line in a section.
113 * Line numbers are grouped on a per function basis; first entry in a function
114 * grouping will have l_lnno = 0 and in place of physical address will be the
115 * symbol table index of the function name.
117 struct external_lineno
{
119 char l_symndx
[4]; /* function name symbol index, iff l_lnno == 0*/
120 char l_paddr
[4]; /* (physical) address of line number */
127 #define LINENO struct external_lineno
131 /********************** SYMBOLS **********************/
133 #define E_SYMNMLEN 8 /* # characters in a symbol name */
134 #define E_FILNMLEN 14 /* # characters in a file name */
135 #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
137 struct external_syment
140 char e_name
[E_SYMNMLEN
];
163 /* Note that this isn't the same shape as other coffs */
164 union external_auxent
{
166 char x_tagndx
[4]; /* str, un, or enum tag indx */
169 char x_fsize
[4]; /* size of function */
171 char x_lnno
[4]; /* declaration line number */
172 char x_size
[4]; /* str/union/array size */
175 struct { /* if ISFCN, tag, or .bb */
176 char x_lnnoptr
[4]; /* ptr to fcn line # */
177 char x_endndx
[4]; /* entry ndx past block end */
182 struct { /* if ISARY, up to 4 dimen. */
183 char x_dimen
[E_DIMNUM
][2];
191 char x_fname
[E_FILNMLEN
];
199 char x_scnlen
[4]; /* section length */
200 char x_nreloc
[4]; /* # relocation entries */
201 char x_nlinno
[4]; /* # line numbers */
205 char x_tvfill
[4]; /* tv fill value */
206 char x_tvlen
[2]; /* length of .tv */
207 char x_tvran
[2][2]; /* tv range */
208 } x_tv
; /* info about .tv section (in auxent of symbol .tv)) */
212 #define GET_FCN_LNNOPTR(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *)ext->x_sym.x_fcn.x_lnnoptr)
213 #define GET_FCN_ENDNDX(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcn.x_endndx)
214 #define PUT_FCN_LNNOPTR(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_fcn.x_lnnoptr)
215 #define PUT_FCN_ENDNDX(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_fcn.x_endndx)
216 #define GET_LNSZ_SIZE(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size)
217 #define GET_LNSZ_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno)
218 #define PUT_LNSZ_LNNO(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno)
219 #define PUT_LNSZ_SIZE(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size)
220 #define GET_SCN_SCNLEN(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen)
221 #define GET_SCN_NRELOC(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_nreloc)
222 #define GET_SCN_NLINNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_nlinno)
223 #define PUT_SCN_SCNLEN(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_scn.x_scnlen)
224 #define PUT_SCN_NRELOC(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *)ext->x_scn.x_nreloc)
225 #define PUT_SCN_NLINNO(abfd,in, ext) bfd_h_put_32(abfd,in, (bfd_byte *) ext->x_scn.x_nlinno)
226 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno))
227 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val, (bfd_byte *) (ext->l_lnno));
231 #define SYMENT struct external_syment
233 #define AUXENT union external_auxent
237 /********************** RELOCATION DIRECTIVES **********************/
239 struct external_reloc
{
246 #define RELOC struct external_reloc
249 #define DEFAULT_SECTION_ALIGNMENT 8 /* double word */
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