Commit | Line | Data |
---|---|---|
0a517767 ILT |
1 | /*** coff information for Hitachi SH */ |
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 | ||
17 | #define SH_ARCH_MAGIC_BIG 0x0500 | |
18 | #define SH_ARCH_MAGIC_LITTLE 0x0550 /* Little endian SH */ | |
19 | ||
20 | ||
21 | #define SHBADMAG(x) \ | |
22 | (((x).f_magic!=SH_ARCH_MAGIC_BIG) && \ | |
23 | ((x).f_magic!=SH_ARCH_MAGIC_LITTLE)) | |
24 | ||
25 | #define FILHDR struct external_filehdr | |
26 | #define FILHSZ 20 | |
27 | ||
28 | ||
29 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
30 | ||
31 | ||
32 | typedef struct | |
33 | { | |
34 | char magic[2]; /* type of file */ | |
35 | char vstamp[2]; /* version stamp */ | |
36 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ | |
37 | char dsize[4]; /* initialized data " " */ | |
38 | char bsize[4]; /* uninitialized data " " */ | |
39 | char entry[4]; /* entry pt. */ | |
40 | char text_start[4]; /* base of text used for this file */ | |
41 | char data_start[4]; /* base of data used for this file */ | |
42 | } | |
43 | AOUTHDR; | |
44 | ||
45 | ||
46 | #define AOUTHDRSZ 28 | |
47 | #define AOUTSZ 28 | |
48 | ||
49 | ||
50 | ||
51 | ||
52 | /********************** SECTION HEADER **********************/ | |
53 | ||
54 | ||
55 | struct external_scnhdr { | |
56 | char s_name[8]; /* section name */ | |
57 | char s_paddr[4]; /* physical address, aliased s_nlib */ | |
58 | char s_vaddr[4]; /* virtual address */ | |
59 | char s_size[4]; /* section size */ | |
60 | char s_scnptr[4]; /* file ptr to raw data for section */ | |
61 | char s_relptr[4]; /* file ptr to relocation */ | |
62 | char s_lnnoptr[4]; /* file ptr to line numbers */ | |
63 | char s_nreloc[2]; /* number of relocation entries */ | |
64 | char s_nlnno[2]; /* number of line number entries*/ | |
65 | char s_flags[4]; /* flags */ | |
66 | }; | |
67 | ||
68 | /* | |
69 | * names of "special" sections | |
70 | */ | |
71 | #define _TEXT ".text" | |
72 | #define _DATA ".data" | |
73 | #define _BSS ".bss" | |
74 | ||
75 | ||
76 | #define SCNHDR struct external_scnhdr | |
77 | #define SCNHSZ 40 | |
78 | ||
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 | char l_lnno[4]; /* line number */ | |
93 | }; | |
94 | ||
95 | #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno)); | |
96 | #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val, (bfd_byte *) (ext->l_lnno)); | |
97 | ||
98 | #define LINENO struct external_lineno | |
99 | #define LINESZ 8 | |
100 | ||
101 | ||
102 | /********************** SYMBOLS **********************/ | |
103 | ||
104 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ | |
105 | #define E_FILNMLEN 14 /* # characters in a file name */ | |
106 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
107 | ||
108 | struct external_syment | |
109 | { | |
110 | union { | |
111 | char e_name[E_SYMNMLEN]; | |
112 | struct { | |
113 | char e_zeroes[4]; | |
114 | char e_offset[4]; | |
115 | } e; | |
116 | } e; | |
117 | char e_value[4]; | |
118 | char e_scnum[2]; | |
119 | char e_type[2]; | |
120 | char e_sclass[1]; | |
121 | char e_numaux[1]; | |
122 | }; | |
123 | ||
124 | ||
125 | ||
126 | #define N_BTMASK (017) | |
127 | #define N_TMASK (060) | |
128 | #define N_BTSHFT (4) | |
129 | #define N_TSHIFT (2) | |
130 | ||
131 | ||
132 | union external_auxent { | |
133 | struct { | |
134 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
135 | union { | |
136 | struct { | |
137 | char x_lnno[2]; /* declaration line number */ | |
138 | char x_size[2]; /* str/union/array size */ | |
139 | } x_lnsz; | |
140 | char x_fsize[4]; /* size of function */ | |
141 | } x_misc; | |
142 | union { | |
143 | struct { /* if ISFCN, tag, or .bb */ | |
144 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
145 | char x_endndx[4]; /* entry ndx past block end */ | |
146 | } x_fcn; | |
147 | struct { /* if ISARY, up to 4 dimen. */ | |
148 | char x_dimen[E_DIMNUM][2]; | |
149 | } x_ary; | |
150 | } x_fcnary; | |
151 | char x_tvndx[2]; /* tv index */ | |
152 | } x_sym; | |
153 | ||
154 | union { | |
155 | char x_fname[E_FILNMLEN]; | |
156 | struct { | |
157 | char x_zeroes[4]; | |
158 | char x_offset[4]; | |
159 | } x_n; | |
160 | } x_file; | |
161 | ||
162 | struct { | |
163 | char x_scnlen[4]; /* section length */ | |
164 | char x_nreloc[2]; /* # relocation entries */ | |
165 | char x_nlinno[2]; /* # line numbers */ | |
166 | } x_scn; | |
167 | ||
168 | struct { | |
169 | char x_tvfill[4]; /* tv fill value */ | |
170 | char x_tvlen[2]; /* length of .tv */ | |
171 | char x_tvran[2][2]; /* tv range */ | |
172 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
173 | ||
174 | ||
175 | }; | |
176 | ||
177 | #define SYMENT struct external_syment | |
178 | #define SYMESZ 18 | |
179 | #define AUXENT union external_auxent | |
180 | #define AUXESZ 18 | |
181 | ||
182 | ||
183 | ||
184 | /********************** RELOCATION DIRECTIVES **********************/ | |
185 | ||
186 | /* The external reloc has an offset field, because some of the reloc | |
187 | types on the h8 don't have room in the instruction for the entire | |
188 | offset - eg the strange jump and high page addressing modes */ | |
189 | ||
190 | struct external_reloc { | |
191 | char r_vaddr[4]; | |
192 | char r_symndx[4]; | |
193 | char r_offset[4]; | |
194 | char r_type[2]; | |
195 | char r_stuff[2]; | |
196 | }; | |
197 | ||
198 | ||
199 | #define RELOC struct external_reloc | |
200 | #define RELSZ 16 | |
201 | ||
202 | /* SH relocation types. Not all of these are actually used. */ | |
203 | ||
204 | #define R_SH_UNUSED 0 /* only used internally */ | |
205 | #define R_SH_PCREL8 3 /* 8 bit pcrel */ | |
206 | #define R_SH_PCREL16 4 /* 16 bit pcrel */ | |
207 | #define R_SH_HIGH8 5 /* high 8 bits of 24 bit address */ | |
208 | #define R_SH_LOW16 7 /* low 16 bits of 24 bit immediate */ | |
209 | #define R_SH_IMM24 6 /* 24 bit immediate */ | |
210 | #define R_SH_PCDISP8BY4 9 /* PC rel 8 bits *4 +ve */ | |
211 | #define R_SH_PCDISP8BY2 10 /* PC rel 8 bits *2 +ve */ | |
212 | #define R_SH_PCDISP8 11 /* 8 bit branch */ | |
213 | #define R_SH_PCDISP 12 /* 12 bit branch */ | |
214 | #define R_SH_IMM32 14 /* 32 bit immediate */ | |
215 | #define R_SH_IMM8 16 /* 8 bit immediate */ | |
216 | #define R_SH_IMM8BY2 17 /* 8 bit immediate *2 */ | |
217 | #define R_SH_IMM8BY4 18 /* 8 bit immediate *4 */ | |
218 | #define R_SH_IMM4 19 /* 4 bit immediate */ | |
219 | #define R_SH_IMM4BY2 20 /* 4 bit immediate *2 */ | |
220 | #define R_SH_IMM4BY4 21 /* 4 bit immediate *4 */ | |
221 | #define R_SH_PCRELIMM8BY2 22 /* PC rel 8 bits *2 unsigned */ | |
222 | #define R_SH_PCRELIMM8BY4 23 /* PC rel 8 bits *4 unsigned */ | |
223 | #define R_SH_IMM16 24 /* 16 bit immediate */ | |
224 | ||
225 | /* The switch table reloc types are used for relaxing. They are | |
226 | generated for expressions such as | |
227 | .word L1 - L2 | |
228 | The r_offset field holds the difference between the reloc address | |
229 | and L2. */ | |
230 | #define R_SH_SWITCH16 25 /* 16 bit switch table entry */ | |
231 | #define R_SH_SWITCH32 26 /* 32 bit switch table entry */ | |
232 | ||
233 | /* The USES reloc type is used for relaxing. The compiler will | |
234 | generate .uses pseudo-ops when it finds a function call which it | |
235 | can relax. The r_offset field of the USES reloc holds the PC | |
236 | relative offset to the instruction which loads the register used in | |
237 | the function call. */ | |
238 | #define R_SH_USES 27 /* .uses pseudo-op */ | |
239 | ||
240 | /* The COUNT reloc type is used for relaxing. The assembler will | |
241 | generate COUNT relocs for addresses referred to by the register | |
242 | loads associated with USES relocs. The r_offset field of the COUNT | |
243 | reloc holds the number of times the address is references in the | |
244 | object file. */ | |
245 | #define R_SH_COUNT 28 /* Count of constant pool uses */ | |
246 | ||
247 | /* The ALIGN reloc type is used for relaxing. The r_offset field is | |
248 | the power of two to which subsequent portions of the object file | |
249 | must be aligned. */ | |
250 | #define R_SH_ALIGN 29 /* .align pseudo-op */ | |
251 | ||
252 | /* The CODE and DATA reloc types are used for aligning load and store | |
253 | instructions. The assembler will generate a CODE reloc before a | |
254 | block of instructions. It will generate a DATA reloc before data. | |
255 | A section should be processed assuming it contains data, unless a | |
256 | CODE reloc is seen. The only relevant pieces of information in the | |
257 | CODE and DATA relocs are the section and the address. The symbol | |
258 | and offset are meaningless. */ | |
259 | #define R_SH_CODE 30 /* start of code */ | |
260 | #define R_SH_DATA 31 /* start of data */ | |
261 | ||
262 | /* The LABEL reloc type is used for aligning load and store | |
263 | instructions. The assembler will generate a LABEL reloc for each | |
264 | label within a block of instructions. This permits the linker to | |
265 | avoid swapping instructions which are the targets of branches. */ | |
266 | #define R_SH_LABEL 32 /* label */ |