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e5a1a2ea ILT |
1 | /*** coff information for M68K */ |
2 | ||
3 | #ifndef GNU_COFF_M68K_H | |
4 | #define GNU_COFF_M68K_H 1 | |
5 | ||
6 | /********************** FILE HEADER **********************/ | |
7 | ||
8 | struct external_filehdr { | |
9 | char f_magic[2]; /* magic number */ | |
10 | char f_nscns[2]; /* number of sections */ | |
11 | char f_timdat[4]; /* time & date stamp */ | |
12 | char f_symptr[4]; /* file pointer to symtab */ | |
13 | char f_nsyms[4]; /* number of symtab entries */ | |
14 | char f_opthdr[2]; /* sizeof(optional hdr) */ | |
15 | char f_flags[2]; /* flags */ | |
16 | }; | |
17 | ||
18 | ||
19 | /* Motorola 68000/68008/68010/68020 */ | |
20 | #define MC68MAGIC 0520 | |
21 | #define MC68KWRMAGIC 0520 /* writeable text segments */ | |
22 | #define MC68TVMAGIC 0521 | |
23 | #define MC68KROMAGIC 0521 /* readonly shareable text segments */ | |
24 | #define MC68KPGMAGIC 0522 /* demand paged text segments */ | |
25 | #define M68MAGIC 0210 | |
26 | #define M68TVMAGIC 0211 | |
27 | ||
28 | /* this is the magic of the Bull dpx/2 */ | |
29 | #define MC68KBCSMAGIC 0526 | |
30 | ||
31 | /* This is Lynx's all-platform magic number for executables. */ | |
32 | ||
33 | #define LYNXCOFFMAGIC 0415 | |
34 | ||
35 | #define OMAGIC M68MAGIC | |
36 | ||
37 | /* This intentionally does not include MC68KBCSMAGIC; it only includes | |
38 | magic numbers which imply that names do not have underscores. */ | |
39 | #define M68KBADMAG(x) (((x).f_magic!=MC68MAGIC) && ((x).f_magic!=MC68KWRMAGIC) && ((x).f_magic!=MC68TVMAGIC) && \ | |
40 | ((x).f_magic!=MC68KROMAGIC) && ((x).f_magic!=MC68KPGMAGIC) && ((x).f_magic!=M68MAGIC) && ((x).f_magic!=M68TVMAGIC) && ((x).f_magic!=LYNXCOFFMAGIC) ) | |
41 | ||
42 | /* Magic numbers for the a.out header. */ | |
43 | ||
44 | #define PAGEMAGICEXECSWAPPED 0407 /* executable (swapped) */ | |
45 | #define PAGEMAGICPEXECSWAPPED 0410 /* pure executable (swapped) */ | |
46 | #define PAGEMAGICPEXECTSHLIB 0443 /* pure executable (target shared library) */ | |
47 | #define PAGEMAGICPEXECPAGED 0413 /* pure executable (paged) */ | |
48 | ||
49 | #define FILHDR struct external_filehdr | |
50 | #define FILHSZ 20 | |
51 | ||
52 | ||
53 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
54 | ||
55 | ||
56 | typedef struct | |
57 | { | |
58 | char magic[2]; /* type of file */ | |
59 | char vstamp[2]; /* version stamp */ | |
60 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ | |
61 | char dsize[4]; /* initialized data " " */ | |
62 | char bsize[4]; /* uninitialized data " " */ | |
63 | char entry[4]; /* entry pt. */ | |
64 | char text_start[4]; /* base of text used for this file */ | |
65 | char data_start[4]; /* base of data used for this file */ | |
66 | } | |
67 | AOUTHDR; | |
68 | ||
69 | #define AOUTSZ 28 | |
70 | #define AOUTHDRSZ 28 | |
71 | ||
72 | ||
73 | /********************** SECTION HEADER **********************/ | |
74 | ||
75 | ||
76 | struct external_scnhdr { | |
77 | char s_name[8]; /* section name */ | |
78 | char s_paddr[4]; /* physical address, aliased s_nlib */ | |
79 | char s_vaddr[4]; /* virtual address */ | |
80 | char s_size[4]; /* section size */ | |
81 | char s_scnptr[4]; /* file ptr to raw data for section */ | |
82 | char s_relptr[4]; /* file ptr to relocation */ | |
83 | char s_lnnoptr[4]; /* file ptr to line numbers */ | |
84 | char s_nreloc[2]; /* number of relocation entries */ | |
85 | char s_nlnno[2]; /* number of line number entries*/ | |
86 | char s_flags[4]; /* flags */ | |
87 | }; | |
88 | ||
89 | /* | |
90 | * names of "special" sections | |
91 | */ | |
92 | #define _TEXT ".text" | |
93 | #define _DATA ".data" | |
94 | #define _BSS ".bss" | |
95 | #define _COMMENT ".comment" | |
96 | ||
97 | #define SCNHDR struct external_scnhdr | |
98 | #define SCNHSZ 40 | |
99 | ||
100 | ||
101 | /********************** LINE NUMBERS **********************/ | |
102 | ||
103 | /* 1 line number entry for every "breakpointable" source line in a section. | |
104 | * Line numbers are grouped on a per function basis; first entry in a function | |
105 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
106 | * symbol table index of the function name. | |
107 | */ | |
108 | struct external_lineno { | |
109 | union { | |
110 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ | |
111 | char l_paddr[4]; /* (physical) address of line number */ | |
112 | } l_addr; | |
113 | char l_lnno[2]; /* line number */ | |
114 | }; | |
115 | ||
116 | ||
117 | #define LINENO struct external_lineno | |
118 | #define LINESZ 8 | |
119 | ||
120 | ||
121 | /********************** SYMBOLS **********************/ | |
122 | ||
123 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ | |
124 | #define E_FILNMLEN 14 /* # characters in a file name */ | |
125 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
126 | ||
127 | struct external_syment | |
128 | { | |
129 | union { | |
130 | char e_name[E_SYMNMLEN]; | |
131 | struct { | |
132 | char e_zeroes[4]; | |
133 | char e_offset[4]; | |
134 | } e; | |
135 | } e; | |
136 | char e_value[4]; | |
137 | char e_scnum[2]; | |
138 | char e_type[2]; | |
139 | char e_sclass[1]; | |
140 | char e_numaux[1]; | |
141 | }; | |
142 | ||
143 | ||
144 | ||
145 | #define N_BTMASK (017) | |
146 | #define N_TMASK (060) | |
147 | #define N_BTSHFT (4) | |
148 | #define N_TSHIFT (2) | |
149 | ||
150 | ||
151 | union external_auxent { | |
152 | struct { | |
153 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
154 | union { | |
155 | struct { | |
156 | char x_lnno[2]; /* declaration line number */ | |
157 | char x_size[2]; /* str/union/array size */ | |
158 | } x_lnsz; | |
159 | char x_fsize[4]; /* size of function */ | |
160 | } x_misc; | |
161 | union { | |
162 | struct { /* if ISFCN, tag, or .bb */ | |
163 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
164 | char x_endndx[4]; /* entry ndx past block end */ | |
165 | } x_fcn; | |
166 | struct { /* if ISARY, up to 4 dimen. */ | |
167 | char x_dimen[E_DIMNUM][2]; | |
168 | } x_ary; | |
169 | } x_fcnary; | |
170 | char x_tvndx[2]; /* tv index */ | |
171 | } x_sym; | |
172 | ||
173 | union { | |
174 | char x_fname[E_FILNMLEN]; | |
175 | struct { | |
176 | char x_zeroes[4]; | |
177 | char x_offset[4]; | |
178 | } x_n; | |
179 | } x_file; | |
180 | ||
181 | struct { | |
182 | char x_scnlen[4]; /* section length */ | |
183 | char x_nreloc[2]; /* # relocation entries */ | |
184 | char x_nlinno[2]; /* # line numbers */ | |
185 | } x_scn; | |
186 | ||
187 | struct { | |
188 | char x_tvfill[4]; /* tv fill value */ | |
189 | char x_tvlen[2]; /* length of .tv */ | |
190 | char x_tvran[2][2]; /* tv range */ | |
191 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
192 | ||
193 | ||
194 | }; | |
195 | ||
196 | #define SYMENT struct external_syment | |
197 | #define SYMESZ 18 | |
198 | #define AUXENT union external_auxent | |
199 | #define AUXESZ 18 | |
200 | ||
201 | ||
202 | ||
203 | /********************** RELOCATION DIRECTIVES **********************/ | |
204 | ||
205 | ||
206 | struct external_reloc { | |
207 | char r_vaddr[4]; | |
208 | char r_symndx[4]; | |
209 | char r_type[2]; | |
210 | #ifdef M68K_COFF_OFFSET | |
211 | char r_offset[4]; | |
212 | #endif | |
213 | ||
214 | }; | |
215 | ||
216 | ||
217 | #define RELOC struct external_reloc | |
218 | ||
219 | #ifdef M68K_COFF_OFFSET | |
220 | #define RELSZ 14 | |
221 | #else | |
222 | #define RELSZ 10 | |
223 | #endif | |
224 | ||
225 | #endif /* GNU_COFF_M68K_H */ |