Commit | Line | Data |
---|---|---|
96b4ced1 ILT |
1 | /*** coff information for 88k bcs */ |
2 | ||
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 */ | |
12 | }; | |
13 | ||
14 | #define MC88MAGIC 0540 /* 88k BCS executable */ | |
15 | #define MC88DMAGIC 0541 /* DG/UX executable */ | |
16 | #define MC88OMAGIC 0555 /* Object file */ | |
17 | ||
18 | #define OMAGIC MC88OMAGIC | |
19 | ||
20 | #define MC88BADMAG(x) (((x).f_magic!=MC88MAGIC) &&((x).f_magic!=MC88DMAGIC) && ((x).f_magic != MC88OMAGIC)) | |
21 | ||
22 | #define FILHDR struct external_filehdr | |
23 | #define FILHSZ sizeof(FILHDR) | |
24 | ||
25 | ||
26 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
27 | ||
28 | ||
29 | #define PAGEMAGIC3 0414 /* Split i&d, zero mapped */ | |
30 | #define PAGEMAGICBCS 0413 | |
31 | ||
32 | ||
33 | typedef struct | |
34 | { | |
35 | char magic[2]; /* type of file */ | |
36 | char vstamp[2]; /* version stamp */ | |
37 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ | |
38 | char dsize[4]; /* initialized data " " */ | |
39 | char bsize[4]; /* uninitialized data " " */ | |
40 | char entry[4]; /* entry pt. */ | |
41 | char text_start[4]; /* base of text used for this file */ | |
42 | char data_start[4]; /* base of data used for this file */ | |
43 | } | |
44 | AOUTHDR; | |
45 | ||
46 | ||
47 | /* compute size of a header */ | |
48 | ||
49 | #define AOUTSZ (sizeof(AOUTHDR)) | |
50 | ||
51 | ||
52 | /********************** SECTION HEADER **********************/ | |
53 | ||
54 | ||
55 | struct external_scnhdr | |
56 | { | |
57 | char s_name[8]; /* section name */ | |
58 | char s_paddr[4]; /* physical address, aliased s_nlib */ | |
59 | char s_vaddr[4]; /* virtual address */ | |
60 | char s_size[4]; /* section size */ | |
61 | char s_scnptr[4]; /* file ptr to raw data for section */ | |
62 | char s_relptr[4]; /* file ptr to relocation */ | |
63 | char s_lnnoptr[4]; /* file ptr to line numbers */ | |
64 | char s_nreloc[4]; /* number of relocation entries */ | |
65 | char s_nlnno[4]; /* number of line number entries*/ | |
66 | char s_flags[4]; /* flags */ | |
67 | }; | |
68 | ||
69 | ||
70 | #define SCNHDR struct external_scnhdr | |
71 | #define SCNHSZ sizeof(SCNHDR) | |
72 | ||
73 | /* | |
74 | * names of "special" sections | |
75 | */ | |
76 | #define _TEXT ".text" | |
77 | #define _DATA ".data" | |
78 | #define _BSS ".bss" | |
79 | ||
80 | /********************** LINE NUMBERS **********************/ | |
81 | ||
82 | /* 1 line number entry for every "breakpointable" source line in a section. | |
83 | * Line numbers are grouped on a per function basis; first entry in a function | |
84 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
85 | * symbol table index of the function name. | |
86 | */ | |
87 | struct external_lineno{ | |
88 | union { | |
89 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ | |
90 | char l_paddr[4]; /* (physical) address of line number */ | |
91 | } l_addr; | |
92 | ||
93 | char l_lnno[4]; | |
94 | ||
95 | }; | |
96 | ||
97 | #define LINENO struct external_lineno | |
98 | #define LINESZ 8 | |
99 | ||
100 | ||
101 | /********************** SYMBOLS **********************/ | |
102 | ||
103 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ | |
104 | #define E_FILNMLEN 14 /* # characters in a file name */ | |
105 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
106 | ||
107 | struct external_syment | |
108 | { | |
109 | union { | |
110 | char e_name[E_SYMNMLEN]; | |
111 | struct { | |
112 | char e_zeroes[4]; | |
113 | char e_offset[4]; | |
114 | } e; | |
115 | } e; | |
116 | char e_value[4]; | |
117 | char e_scnum[2]; | |
118 | char e_type[2]; | |
119 | char e_sclass[1]; | |
120 | char e_numaux[1]; | |
121 | char pad2[2]; | |
122 | }; | |
123 | ||
124 | ||
125 | ||
126 | ||
127 | #define N_BTMASK 017 | |
128 | #define N_TMASK 060 | |
129 | #define N_BTSHFT 4 | |
130 | #define N_TSHIFT 2 | |
131 | ||
132 | ||
133 | /* Note that this isn't the same shape as other coffs */ | |
134 | union external_auxent { | |
135 | struct { | |
136 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
137 | /* 4 */ | |
138 | union { | |
139 | char x_fsize[4]; /* size of function */ | |
140 | struct { | |
141 | char x_lnno[4]; /* declaration line number */ | |
142 | char x_size[4]; /* str/union/array size */ | |
143 | } x_lnsz; | |
144 | } x_misc; | |
145 | ||
146 | /* 12 */ | |
147 | union { | |
148 | struct { /* if ISFCN, tag, or .bb */ | |
149 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
150 | char x_endndx[4]; /* entry ndx past block end */ | |
151 | } x_fcn; | |
152 | struct { /* if ISARY, up to 4 dimen. */ | |
153 | char x_dimen[E_DIMNUM][2]; | |
154 | } x_ary; | |
155 | } x_fcnary; | |
156 | /* 20 */ | |
157 | ||
158 | } x_sym; | |
159 | ||
160 | union { | |
161 | char x_fname[E_FILNMLEN]; | |
162 | struct { | |
163 | char x_zeroes[4]; | |
164 | char x_offset[4]; | |
165 | } x_n; | |
166 | } x_file; | |
167 | ||
168 | struct { | |
169 | char x_scnlen[4]; /* section length */ | |
170 | char x_nreloc[4]; /* # relocation entries */ | |
171 | char x_nlinno[4]; /* # line numbers */ | |
172 | } x_scn; | |
173 | ||
174 | struct { | |
175 | char x_tvfill[4]; /* tv fill value */ | |
176 | char x_tvlen[2]; /* length of .tv */ | |
177 | char x_tvran[2][2]; /* tv range */ | |
178 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
179 | ||
180 | }; | |
181 | ||
182 | #define GET_FCN_LNNOPTR(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *)ext->x_sym.x_fcnary.x_fcn.x_lnnoptr) | |
183 | #define GET_FCN_ENDNDX(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx) | |
184 | #define PUT_FCN_LNNOPTR(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_lnnoptr) | |
185 | #define PUT_FCN_ENDNDX(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_fcnary.x_fcn.x_endndx) | |
186 | #define GET_LNSZ_SIZE(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size) | |
187 | #define GET_LNSZ_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno) | |
188 | #define PUT_LNSZ_LNNO(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_lnno) | |
189 | #define PUT_LNSZ_SIZE(abfd, in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_sym.x_misc.x_lnsz.x_size) | |
190 | #define GET_SCN_SCNLEN(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_scnlen) | |
191 | #define GET_SCN_NRELOC(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_nreloc) | |
192 | #define GET_SCN_NLINNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) ext->x_scn.x_nlinno) | |
193 | #define PUT_SCN_SCNLEN(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *) ext->x_scn.x_scnlen) | |
194 | #define PUT_SCN_NRELOC(abfd,in, ext) bfd_h_put_32(abfd, in, (bfd_byte *)ext->x_scn.x_nreloc) | |
195 | #define PUT_SCN_NLINNO(abfd,in, ext) bfd_h_put_32(abfd,in, (bfd_byte *) ext->x_scn.x_nlinno) | |
196 | #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno)) | |
197 | #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val, (bfd_byte *) (ext->l_lnno)); | |
198 | ||
199 | ||
200 | ||
201 | #define SYMENT struct external_syment | |
202 | #define SYMESZ 20 | |
203 | #define AUXENT union external_auxent | |
204 | #define AUXESZ 20 | |
205 | ||
206 | ||
207 | /********************** RELOCATION DIRECTIVES **********************/ | |
208 | ||
209 | struct external_reloc { | |
210 | char r_vaddr[4]; | |
211 | char r_symndx[4]; | |
212 | char r_type[2]; | |
213 | char r_offset[2]; | |
214 | }; | |
215 | ||
216 | #define RELOC struct external_reloc | |
217 | #define RELSZ 12 | |
218 | ||
219 | #define DEFAULT_SECTION_ALIGNMENT 8 /* double word */ | |
220 | ||
221 | #define NO_TVNDX |