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1 | /*** coff information for TI TMS320C80 (MVP) */ |
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 | char f_target_id[2]; /* target id (TIc80 specific) */ | |
14 | }; | |
15 | ||
16 | ||
17 | ||
18 | #define TIC80_ARCH_MAGIC 0x0C1 /* Goes in the file header magic number field */ | |
19 | #define TIC80MAGIC 0x108 /* Goes in the optional file header magic number field */ | |
20 | ||
21 | ||
22 | #define TIC80BADMAG(x) ((x).f_magic != TIC80_ARCH_MAGIC) | |
23 | ||
24 | #define FILHDR struct external_filehdr | |
25 | #define FILHSZ 22 | |
26 | ||
27 | ||
28 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
29 | ||
30 | ||
31 | typedef struct | |
32 | { | |
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 */ | |
41 | } | |
42 | AOUTHDR; | |
43 | ||
44 | ||
45 | #define AOUTHDRSZ 28 | |
46 | #define AOUTSZ 28 | |
47 | ||
48 | ||
49 | ||
50 | ||
51 | /********************** SECTION HEADER **********************/ | |
52 | ||
53 | ||
54 | struct external_scnhdr { | |
55 | char s_name[8]; /* section name */ | |
56 | char s_paddr[4]; /* physical address, aliased s_nlib */ | |
57 | char s_vaddr[4]; /* virtual address */ | |
58 | char s_size[4]; /* section size */ | |
59 | char s_scnptr[4]; /* file ptr to raw data for section */ | |
60 | char s_relptr[4]; /* file ptr to relocation */ | |
61 | char s_lnnoptr[4]; /* file ptr to line numbers */ | |
62 | char s_nreloc[2]; /* number of relocation entries */ | |
63 | char s_nlnno[2]; /* number of line number entries*/ | |
64 | char s_flags[2]; /* flags */ | |
65 | char s_reserved[1]; /* reserved (TIc80 specific) */ | |
66 | char s_mempage[1]; /* memory page number (TIc80) */ | |
67 | }; | |
68 | ||
69 | /* | |
70 | * names of "special" sections | |
71 | */ | |
72 | #define _TEXT ".text" | |
73 | #define _DATA ".data" | |
74 | #define _BSS ".bss" | |
75 | #define _CINIT ".cinit" | |
76 | #define _CONST ".const" | |
77 | #define _SWITCH ".switch" | |
78 | #define _STACK ".stack" | |
79 | #define _SYSMEM ".sysmem" | |
80 | ||
81 | ||
82 | #define SCNHDR struct external_scnhdr | |
83 | #define SCNHSZ 40 | |
84 | ||
85 | ||
86 | /********************** LINE NUMBERS **********************/ | |
87 | ||
88 | /* 1 line number entry for every "breakpointable" source line in a section. | |
89 | * Line numbers are grouped on a per function basis; first entry in a function | |
90 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
91 | * symbol table index of the function name. | |
92 | */ | |
93 | struct external_lineno { | |
94 | union { | |
95 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ | |
96 | char l_paddr[4]; /* (physical) address of line number */ | |
97 | } l_addr; | |
98 | char l_lnno[2]; /* line number */ | |
99 | }; | |
100 | ||
101 | #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno)); | |
102 | #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val, (bfd_byte *) (ext->l_lnno)); | |
103 | ||
104 | #define LINENO struct external_lineno | |
105 | #define LINESZ 6 | |
106 | ||
107 | ||
108 | /********************** SYMBOLS **********************/ | |
109 | ||
110 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ | |
111 | #define E_FILNMLEN 14 /* # characters in a file name */ | |
112 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
113 | ||
114 | struct external_syment | |
115 | { | |
116 | union { | |
117 | char e_name[E_SYMNMLEN]; | |
118 | struct { | |
119 | char e_zeroes[4]; | |
120 | char e_offset[4]; | |
121 | } e; | |
122 | } e; | |
123 | char e_value[4]; | |
124 | char e_scnum[2]; | |
125 | char e_type[2]; | |
126 | char e_sclass[1]; | |
127 | char e_numaux[1]; | |
128 | }; | |
129 | ||
130 | ||
131 | ||
132 | #define N_BTMASK (017) | |
133 | #define N_TMASK (060) | |
134 | #define N_BTSHFT (4) | |
135 | #define N_TSHIFT (2) | |
136 | ||
137 | /* FIXME - need to correlate with TIc80 Code Generation Tools User's Guide, CG:A-25 */ | |
138 | union external_auxent { | |
139 | struct { | |
140 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
141 | union { | |
142 | struct { | |
143 | char x_lnno[2]; /* declaration line number */ | |
144 | char x_size[2]; /* str/union/array size */ | |
145 | } x_lnsz; | |
146 | char x_fsize[4]; /* size of function */ | |
147 | } x_misc; | |
148 | union { | |
149 | struct { /* if ISFCN, tag, or .bb */ | |
150 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
151 | char x_endndx[4]; /* entry ndx past block end */ | |
152 | } x_fcn; | |
153 | struct { /* if ISARY, up to 4 dimen. */ | |
154 | char x_dimen[E_DIMNUM][2]; | |
155 | } x_ary; | |
156 | } x_fcnary; | |
157 | char x_tvndx[2]; /* tv index */ | |
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[2]; /* # relocation entries */ | |
171 | char x_nlinno[2]; /* # 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 | ||
183 | #define SYMENT struct external_syment | |
184 | #define SYMESZ 18 | |
185 | #define AUXENT union external_auxent | |
186 | #define AUXESZ 18 | |
187 | ||
188 | ||
189 | ||
190 | /********************** RELOCATION DIRECTIVES **********************/ | |
191 | ||
192 | /* The external reloc has an offset field, because some of the reloc | |
193 | types on the h8 don't have room in the instruction for the entire | |
194 | offset - eg the strange jump and high page addressing modes */ | |
195 | ||
196 | struct external_reloc { | |
197 | char r_vaddr[4]; | |
198 | char r_symndx[4]; | |
199 | char r_reserved[2]; | |
200 | char r_type[2]; | |
201 | }; | |
202 | ||
203 | ||
204 | #define RELOC struct external_reloc | |
205 | #define RELSZ 12 | |
206 | ||
207 | /* TIc80 relocation types. */ | |
208 | ||
209 | #define R_ABS 0x00 /* Absolute address - no relocation */ | |
210 | #define R_RELLONGX 0x11 /* PP: 32 bits, direct */ | |
211 | #define R_PPBASE 0x34 /* PP: Global base address type */ | |
212 | #define R_PPLBASE 0x35 /* PP: Local base address type */ | |
213 | #define R_PP15 0x38 /* PP: Global 15 bit offset */ | |
214 | #define R_PP15W 0x39 /* PP: Global 15 bit offset divided by 4 */ | |
215 | #define R_PP15H 0x3A /* PP: Global 15 bit offset divided by 2 */ | |
216 | #define R_PP16B 0x3B /* PP: Global 16 bit offset for bytes */ | |
217 | #define R_PPL15 0x3C /* PP: Local 15 bit offset */ | |
218 | #define R_PPL15W 0x3D /* PP: Local 15 bit offset divided by 4 */ | |
219 | #define R_PPL15H 0x3E /* PP: Local 15 bit offset divided by 2 */ | |
220 | #define R_PPL16B 0x03 /* PP: Local 16 bit offset for bytes */ | |
221 | #define R_PPN15 0x40 /* PP: Global 15 bit negative offset */ | |
222 | #define R_PPN15W 0x41 /* PP: Global 15 bit negative offset divided by 4 */ | |
223 | #define R_PPN15H 0x42 /* PP: Global 15 bit negative offset divided by 2 */ | |
224 | #define R_PPN16B 0x43 /* PP: Global 16 bit negative byte offset */ | |
225 | #define R_PPLN15 0x44 /* PP: Local 15 bit negative offset */ | |
226 | #define R_PPLN15W 0x45 /* PP: Local 15 bit negative offset divided by 4 */ | |
227 | #define R_PPLN15H 0x46 /* PP: Local 15 bit negative offset divided by 2 */ | |
228 | #define R_PPLN16B 0x47 /* PP: Local 16 bit negative byte offset */ | |
229 | #define R_MPPCR 0x4F /* MP: 32 bit PC-relative divided by 4 */ |