1 /*** coff information for Hitachi SH */
3 /********************** FILE HEADER **********************/
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 */
17 #define SH_ARCH_MAGIC_BIG 0x0500
18 #define SH_ARCH_MAGIC_LITTLE 0x0550 /* Little endian SH */
22 (((x).f_magic!=SH_ARCH_MAGIC_BIG) && \
23 ((x).f_magic!=SH_ARCH_MAGIC_LITTLE))
25 #define FILHDR struct external_filehdr
29 /********************** AOUT "OPTIONAL HEADER" **********************/
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 */
52 /********************** SECTION HEADER **********************/
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 */
69 * names of "special" sections
76 #define SCNHDR struct external_scnhdr
80 /********************** LINE NUMBERS **********************/
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.
87 struct external_lineno {
89 char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
90 char l_paddr[4]; /* (physical) address of line number */
92 char l_lnno[4]; /* line number */
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));
98 #define LINENO struct external_lineno
102 /********************** SYMBOLS **********************/
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 */
108 struct external_syment
111 char e_name[E_SYMNMLEN];
126 #define N_BTMASK (017)
127 #define N_TMASK (060)
132 union external_auxent {
134 char x_tagndx[4]; /* str, un, or enum tag indx */
137 char x_lnno[2]; /* declaration line number */
138 char x_size[2]; /* str/union/array size */
140 char x_fsize[4]; /* size of function */
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 */
147 struct { /* if ISARY, up to 4 dimen. */
148 char x_dimen[E_DIMNUM][2];
151 char x_tvndx[2]; /* tv index */
155 char x_fname[E_FILNMLEN];
163 char x_scnlen[4]; /* section length */
164 char x_nreloc[2]; /* # relocation entries */
165 char x_nlinno[2]; /* # line numbers */
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)) */
177 #define SYMENT struct external_syment
179 #define AUXENT union external_auxent
184 /********************** RELOCATION DIRECTIVES **********************/
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 */
190 struct external_reloc {
199 #define RELOC struct external_reloc
202 /* SH relocation types. Not all of these are actually used. */
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 */
225 /* The switch table reloc types are used for relaxing. They are
226 generated for expressions such as
228 The r_offset field holds the difference between the reloc address
230 #define R_SH_SWITCH16 25 /* 16 bit switch table entry */
231 #define R_SH_SWITCH32 26 /* 32 bit switch table entry */
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 */
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
245 #define R_SH_COUNT 28 /* Count of constant pool uses */
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
250 #define R_SH_ALIGN 29 /* .align pseudo-op */
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 */
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 */