Commit | Line | Data |
---|---|---|
a69fa223 KK |
1 | /*** coff information for Apollo M68K */ |
2 | ||
3 | /********************** FILE HEADER **********************/ | |
4 | ||
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 */ | |
13 | }; | |
14 | ||
15 | ||
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 */ | |
22 | #define M68MAGIC 0210 | |
23 | #define M68TVMAGIC 0211 | |
24 | ||
25 | /* Apollo 68000-based machines have a different magic number. This comes | |
26 | * from /usr/include/apollo/filehdr.h | |
27 | */ | |
28 | #define APOLLOM68KMAGIC 0627 | |
29 | ||
30 | #define OMAGIC M68MAGIC | |
31 | #define M68KBADMAG(x) (((x).f_magic!=MC68MAGIC) && ((x).f_magic!=MC68KWRMAGIC) && ((x).f_magic!=MC68TVMAGIC) && \ | |
32 | ((x).f_magic!=MC68KROMAGIC) && ((x).f_magic!=MC68KPGMAGIC) && ((x).f_magic!=M68MAGIC) && ((x).f_magic!=M68TVMAGIC) && \ | |
33 | ((x).f_magic!=APOLLOM68KMAGIC) ) | |
34 | ||
35 | ||
36 | #define FILHDR struct external_filehdr | |
37 | #define FILHSZ sizeof(FILHDR) | |
38 | ||
39 | ||
40 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
41 | ||
42 | typedef struct | |
43 | { | |
44 | char magic[2]; /* type of file */ | |
45 | char vstamp[2]; /* version stamp */ | |
46 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ | |
47 | char dsize[4]; /* initialized data " " */ | |
48 | char bsize[4]; /* uninitialized data " " */ | |
49 | char entry[4]; /* entry pt. */ | |
50 | char text_start[4]; /* base of text used for this file */ | |
51 | char data_start[4]; /* base of data used for this file */ | |
52 | char o_sri[4]; /* Apollo specific - .sri data pointer */ | |
53 | char o_inlib[4]; /* Apollo specific - .inlib data pointer */ | |
54 | char vid[8]; /* Apollo specific - 64 bit version ID */ | |
55 | } | |
56 | AOUTHDR; | |
57 | ||
58 | #define APOLLO_COFF_VERSION_NUMBER 1 /* the value of the aouthdr magic */ | |
59 | #define AOUTHDRSZ (sizeof(AOUTHDR)) | |
60 | #define AOUTSZ (sizeof(AOUTHDR)) | |
61 | ||
62 | ||
63 | ||
64 | /********************** SECTION HEADER **********************/ | |
65 | ||
66 | struct external_scnhdr { | |
67 | /* Apollo allow for larger section names by allowing it to be in | |
68 | * the string table. | |
69 | */ | |
70 | char s_name[8]; | |
71 | char s_paddr[4]; /* physical address, aliased s_nlib */ | |
72 | char s_vaddr[4]; /* virtual address */ | |
73 | char s_size[4]; /* section size */ | |
74 | char s_scnptr[4]; /* file ptr to raw data for section */ | |
75 | char s_relptr[4]; /* file ptr to relocation */ | |
76 | char s_lnnoptr[4]; /* file ptr to line numbers */ | |
77 | char s_nreloc[2]; /* number of relocation entries */ | |
78 | char s_nlnno[2]; /* number of line number entries*/ | |
79 | char s_flags[4]; /* flags */ | |
80 | }; | |
81 | ||
82 | /* If s_zeores is all zeroes, s_offset gives the real location of the name | |
83 | * in the string table. | |
84 | */ | |
85 | ||
86 | #define s_zeroes section_name.s_name | |
87 | #define s_offset (section_name.s_name+4) | |
88 | ||
89 | /* | |
90 | * names of "special" sections | |
91 | */ | |
92 | #define _TEXT ".text" | |
93 | #define _DATA ".data" | |
94 | #define _BSS ".bss" | |
95 | #define _TV ".tv" | |
96 | #define _INIT ".init" | |
97 | #define _FINI ".fini" | |
98 | #define _LINES ".lines" | |
99 | #define _BLOCKS ".blocks" | |
100 | #define _SRI ".sri" /* Static Resource Information (systype, | |
101 | et al.) */ | |
102 | #define _MIR ".mir" /* Module Information Records */ | |
103 | #define _APTV ".aptv" /* Apollo-style transfer vectors. */ | |
104 | #define _INLIB ".inlib" /* Shared Library information */ | |
105 | #define _RWDI ".rwdi" /* Read/write data initialization directives for | |
106 | compressed sections */ | |
107 | #define _UNWIND ".unwind" /* Stack unwind information */ | |
108 | ||
109 | #define SCNHDR struct external_scnhdr | |
110 | #define SCNHSZ sizeof(SCNHDR) | |
111 | ||
112 | ||
113 | /********************** LINE NUMBERS **********************/ | |
114 | ||
115 | /* 1 line number entry for every "breakpointable" source line in a section. | |
116 | * Line numbers are grouped on a per function basis; first entry in a function | |
117 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
118 | * symbol table index of the function name. | |
119 | */ | |
120 | struct external_lineno { | |
121 | union { | |
122 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ | |
123 | char l_paddr[4]; /* (physical) address of line number */ | |
124 | } l_addr; | |
125 | char l_lnno[2]; /* line number */ | |
126 | }; | |
127 | ||
128 | ||
129 | #define LINENO struct external_lineno | |
130 | #define LINESZ sizeof(LINENO) | |
131 | ||
132 | ||
133 | /********************** SYMBOLS **********************/ | |
134 | ||
135 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ | |
136 | #define E_FILNMLEN 14 /* # characters in a file name */ | |
137 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
138 | ||
139 | struct external_syment | |
140 | { | |
141 | union { | |
142 | char e_name[E_SYMNMLEN]; | |
143 | struct { | |
144 | char e_zeroes[4]; | |
145 | char e_offset[4]; | |
146 | } e; | |
147 | } e; | |
148 | char e_value[4]; | |
149 | char e_scnum[2]; | |
150 | char e_type[2]; | |
151 | char e_sclass[1]; | |
152 | char e_numaux[1]; | |
153 | }; | |
154 | ||
155 | ||
156 | ||
157 | #define N_BTMASK (017) | |
158 | #define N_TMASK (060) | |
159 | #define N_BTSHFT (4) | |
160 | #define N_TSHIFT (2) | |
161 | ||
162 | ||
163 | union external_auxent { | |
164 | struct { | |
165 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
166 | union { | |
167 | struct { | |
168 | char x_lnno[2]; /* declaration line number */ | |
169 | char x_size[2]; /* str/union/array size */ | |
170 | } x_lnsz; | |
171 | char x_fsize[4]; /* size of function */ | |
172 | } x_misc; | |
173 | union { | |
174 | struct { /* if ISFCN, tag, or .bb */ | |
175 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
176 | char x_endndx[4]; /* entry ndx past block end */ | |
177 | } x_fcn; | |
178 | struct { /* if ISARY, up to 4 dimen. */ | |
179 | char x_dimen[E_DIMNUM][2]; | |
180 | } x_ary; | |
181 | } x_fcnary; | |
182 | char x_tvndx[2]; /* tv index */ | |
183 | } x_sym; | |
184 | ||
185 | union { | |
186 | char x_fname[E_FILNMLEN]; | |
187 | struct { | |
188 | char x_zeroes[4]; | |
189 | char x_offset[4]; | |
190 | } x_n; | |
191 | } x_file; | |
192 | ||
193 | struct { | |
194 | char x_scnlen[4]; /* section length */ | |
195 | char x_nreloc[2]; /* # relocation entries */ | |
196 | char x_nlinno[2]; /* # line numbers */ | |
197 | } x_scn; | |
198 | ||
199 | struct { | |
200 | char x_tvfill[4]; /* tv fill value */ | |
201 | char x_tvlen[2]; /* length of .tv */ | |
202 | char x_tvran[2][2]; /* tv range */ | |
203 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
204 | ||
205 | ||
206 | }; | |
207 | ||
208 | #define SYMENT struct external_syment | |
209 | #define SYMESZ 18 | |
210 | #define AUXENT union external_auxent | |
211 | #define AUXESZ 18 | |
212 | ||
213 | ||
214 | ||
215 | /********************** RELOCATION DIRECTIVES **********************/ | |
216 | ||
217 | ||
218 | struct external_reloc { | |
219 | char r_vaddr[4]; | |
220 | char r_symndx[4]; | |
221 | char r_type[2]; | |
222 | #ifdef M68K_COFF_OFFSET | |
223 | char r_offset[4]; | |
224 | #endif | |
225 | ||
226 | }; | |
227 | ||
228 | ||
229 | #define RELOC struct external_reloc | |
230 | ||
231 | #define RELSZ sizeof(struct external_reloc) | |
232 | ||
233 | /* Apollo specific STYP flags */ | |
234 | ||
235 | #define STYP_RELOCATED_NOT_LOADED 0x00010000 /* Section is relocated normally during linking, but need | |
236 | not be loaded during program execution */ | |
237 | #define STYP_DEBUG 0x00020000 /* debug section */ | |
238 | #define STYP_OVERLAY 0x00040000 /* Section is overlayed */ | |
239 | #define STYP_INSTRUCTION 0x00200000 /* Section contains executable code */ | |
240 | ||
241 | #define STYP_ZERO 0x00800000 /* Section is initialized to zero */ | |
242 | #define STYP_INSTALLED 0x02000000 /* Section should be installable in KGT */ | |
243 | #define STYP_LOOK_INSTALLED 0x04000000 /* Look for section in KGT */ | |
244 | #define STYP_SECALIGN1 0x08000000 /* Specially aligned section */ | |
245 | #define STYP_SECALIGN2 0x10000000 /* " " " */ | |
246 | #define STYP_COMPRESSED 0x20000000 /* No section data per se (s_scnptr = 0), but there are | |
247 | initialization directives for it in .rwdi section | |
248 | (used in conjunction with STYP_BSS) */ |