fb215bbaab6c4cd9012e70e7b778f1474ba0f22e
1 /*** coff information for M68K */
3 /********************** FILE HEADER **********************/
5 struct external_filehdr
{
6 char f_magic
[2]; /* magic number */
7 char f_nscns
[2]; /* number of sections */
8 char f_timdat
[4]; /* time & date stamp */
9 char f_symptr
[4]; /* file pointer to symtab */
10 char f_nsyms
[4]; /* number of symtab entries */
11 char f_opthdr
[2]; /* sizeof(optional hdr) */
12 char f_flags
[2]; /* flags */
16 /* Motorola 68000/68008/68010/68020 */
17 #define MC68MAGIC 0520
18 #define MC68KWRMAGIC 0520 /* writeable text segments */
19 #define MC68TVMAGIC 0521
20 #define MC68KROMAGIC 0521 /* readonly shareable text segments */
21 #define MC68KPGMAGIC 0522 /* demand paged text segments */
23 #define M68TVMAGIC 0211
25 #define M68KBADMAG(x) (((x).f_magic!=MC68MAGIC) && ((x).f_magic!=MC68KWRMAGIC) && ((x).f_magic!=MC68TVMAGIC) && \
26 ((x).f_magic!=MC68KROMAGIC) && ((x).f_magic!=MC68KPGMAGIC) && ((x).f_magic!=M68MAGIC) && ((x).f_magic!=M68TVMAGIC) )
30 #define FILHDR struct external_filehdr
31 #define FILHSZ sizeof(FILHDR)
34 /********************** AOUT "OPTIONAL HEADER" **********************/
39 char magic
[2]; /* type of file */
40 char vstamp
[2]; /* version stamp */
41 char tsize
[4]; /* text size in bytes, padded to FW bdry*/
42 char dsize
[4]; /* initialized data " " */
43 char bsize
[4]; /* uninitialized data " " */
44 char entry
[4]; /* entry pt. */
45 char text_start
[4]; /* base of text used for this file */
46 char data_start
[4]; /* base of data used for this file */
47 char tagentries
[4]; /* number of tag entries to follow */
51 #define AOUTSZ (sizeof(AOUTHDR))
55 /********************** SECTION HEADER **********************/
58 struct external_scnhdr
{
59 char s_name
[8]; /* section name */
60 char s_paddr
[4]; /* physical address, aliased s_nlib */
61 char s_vaddr
[4]; /* virtual address */
62 char s_size
[4]; /* section size */
63 char s_scnptr
[4]; /* file ptr to raw data for section */
64 char s_relptr
[4]; /* file ptr to relocation */
65 char s_lnnoptr
[4]; /* file ptr to line numbers */
66 char s_nreloc
[2]; /* number of relocation entries */
67 char s_nlnno
[2]; /* number of line number entries*/
68 char s_flags
[4]; /* flags */
72 * names of "special" sections
79 #define SCNHDR struct external_scnhdr
80 #define SCNHSZ sizeof(SCNHDR)
83 /********************** LINE NUMBERS **********************/
85 /* 1 line number entry for every "breakpointable" source line in a section.
86 * Line numbers are grouped on a per function basis; first entry in a function
87 * grouping will have l_lnno = 0 and in place of physical address will be the
88 * symbol table index of the function name.
90 struct external_lineno
{
92 char l_symndx
[4]; /* function name symbol index, iff l_lnno == 0*/
93 char l_paddr
[4]; /* (physical) address of line number */
95 char l_lnno
[2]; /* line number */
99 #define LINENO struct external_lineno
100 #define LINESZ sizeof(LINENO)
103 /********************** SYMBOLS **********************/
105 #define E_SYMNMLEN 8 /* # characters in a symbol name */
106 #define E_FILNMLEN 14 /* # characters in a file name */
107 #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
109 struct external_syment
112 char e_name
[E_SYMNMLEN
];
127 #define N_BTMASK (017)
128 #define N_TMASK (060)
133 union external_auxent
{
135 char x_tagndx
[4]; /* str, un, or enum tag indx */
138 char x_lnno
[2]; /* declaration line number */
139 char x_size
[2]; /* str/union/array size */
141 char x_fsize
[4]; /* size of function */
144 struct { /* if ISFCN, tag, or .bb */
145 char x_lnnoptr
[4]; /* ptr to fcn line # */
146 char x_endndx
[4]; /* entry ndx past block end */
148 struct { /* if ISARY, up to 4 dimen. */
149 char x_dimen
[E_DIMNUM
][2];
152 char x_tvndx
[2]; /* tv index */
156 char x_fname
[E_FILNMLEN
];
164 char x_scnlen
[4]; /* section length */
165 char x_nreloc
[2]; /* # relocation entries */
166 char x_nlinno
[2]; /* # line numbers */
170 char x_tvfill
[4]; /* tv fill value */
171 char x_tvlen
[2]; /* length of .tv */
172 char x_tvran
[2][2]; /* tv range */
173 } x_tv
; /* info about .tv section (in auxent of symbol .tv)) */
178 #define SYMENT struct external_syment
180 #define AUXENT union external_auxent
185 /********************** RELOCATION DIRECTIVES **********************/
188 struct external_reloc
{
195 #define RELOC struct external_reloc
198 #define DEFAULT_DATA_SECTION_ALIGNMENT 4
199 #define DEFAULT_BSS_SECTION_ALIGNMENT 4
200 #define DEFAULT_TEXT_SECTION_ALIGNMENT 4
201 /* For new sections we havn't heard of before */
202 #define DEFAULT_SECTION_ALIGNMENT 4