1 /* coff object file format
2 Copyright (C) 1989-2019 Free Software Foundation, Inc.
4 This file is part of GAS.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
28 /* This internal_lineno crap is to stop namespace pollution from the
29 bfd internal coff headerfile. */
30 #define internal_lineno bfd_internal_lineno
31 #include "coff/internal.h"
32 #undef internal_lineno
34 /* CPU-specific setup: */
39 #define TARGET_FORMAT "coff-arm"
45 #include "coff/powerpc.h"
47 #include "coff/rs6000.h"
53 #include "coff/x86_64.h"
55 #include "coff/i386.h"
60 #define TARGET_FORMAT "coff-x86-64"
62 #define TARGET_FORMAT "coff-i386"
68 #include "coff/m68k.h"
70 #define TARGET_FORMAT "coff-m68k"
76 #define TARGET_FORMAT "coff-z80"
81 #define TARGET_FORMAT "coff-z8k"
93 #define TARGET_FORMAT "pe-shl"
96 #define TARGET_FORMAT \
98 ? (sh_small ? "coff-shl-small" : "coff-shl") \
99 : (sh_small ? "coff-sh-small" : "coff-sh"))
106 #include "coff/mipspe.h"
108 #define TARGET_FORMAT "pe-mips"
112 #include "coff/tic30.h"
113 #define TARGET_FORMAT "coff-tic30"
117 #include "coff/tic4x.h"
118 #define TARGET_FORMAT "coff2-tic4x"
122 #include "coff/tic54x.h"
123 #define TARGET_FORMAT "coff1-c54x"
127 #include "coff/mcore.h"
128 #ifndef TARGET_FORMAT
129 #define TARGET_FORMAT "pe-mcore"
134 #define obj_set_weak_hook pecoff_obj_set_weak_hook
135 #define obj_clear_weak_hook pecoff_obj_clear_weak_hook
138 #ifndef OBJ_COFF_MAX_AUXENTRIES
139 #define OBJ_COFF_MAX_AUXENTRIES 1
142 #define obj_symbol_new_hook coff_obj_symbol_new_hook
143 #define obj_symbol_clone_hook coff_obj_symbol_clone_hook
144 #define obj_read_begin_hook coff_obj_read_begin_hook
146 #include "bfd/libcoff.h"
148 #define OUTPUT_FLAVOR bfd_target_coff_flavour
150 /* Alter the field names, for now, until we've fixed up the other
151 references to use the new name. */
152 #define OBJ_SYMFIELD_TYPE unsigned long
153 #define sy_obj sy_obj_flags
155 /* We can't use the predefined section symbols in bfd/section.c, as
156 COFF symbols have extra fields. See bfd/libcoff.h:coff_symbol_type. */
157 #ifndef obj_sec_sym_ok_for_reloc
158 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
161 #define SYM_AUXENT(S) \
162 (&coffsymbol (symbol_get_bfdsym (S))->native[1].u.auxent)
163 #define SYM_AUXINFO(S) \
164 (&coffsymbol (symbol_get_bfdsym (S))->native[1])
166 /* The number of auxiliary entries. */
167 #define S_GET_NUMBER_AUXILIARY(s) \
168 (coffsymbol (symbol_get_bfdsym (s))->native->u.syment.n_numaux)
169 /* The number of auxiliary entries. */
170 #define S_SET_NUMBER_AUXILIARY(s, v) (S_GET_NUMBER_AUXILIARY (s) = (v))
172 /* True if a symbol name is in the string table, i.e. its length is > 8. */
173 #define S_IS_STRING(s) (strlen (S_GET_NAME (s)) > 8 ? 1 : 0)
175 /* Auxiliary entry macros. SA_ stands for symbol auxiliary. */
176 /* Omit the tv related fields. */
179 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l)
180 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno)
181 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size)
182 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize)
183 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr)
184 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx)
185 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)])
186 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname)
187 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen)
188 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc)
189 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno)
191 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno = (v))
192 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size = (v))
193 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize = (v))
194 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr = (v))
195 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)] = (v))
196 #define SA_SET_FILE_FNAME(s,v) strncpy (SYM_AUXENT (s)->x_file.x_fname, (v), FILNMLEN)
197 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen = (v))
198 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc = (v))
199 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno = (v))
201 /* Internal use only definitions. SF_ stands for symbol flags.
203 These values can be assigned to sy_symbol.ost_flags field of a symbolS. */
205 #define SF_NORMAL_MASK 0x0000ffff /* bits 12-15 are general purpose. */
207 #define SF_STATICS 0x00001000 /* Mark the .text & all symbols. */
208 #define SF_DEFINED 0x00002000 /* Symbol is defined in this file. */
209 #define SF_STRING 0x00004000 /* Symbol name length > 8. */
210 #define SF_LOCAL 0x00008000 /* Symbol must not be emitted. */
212 #define SF_DEBUG_MASK 0xffff0000 /* bits 16-31 are debug info. */
214 #define SF_FUNCTION 0x00010000 /* The symbol is a function. */
215 #define SF_PROCESS 0x00020000 /* Process symbol before write. */
216 #define SF_TAGGED 0x00040000 /* Is associated with a tag. */
217 #define SF_TAG 0x00080000 /* Is a tag. */
218 #define SF_DEBUG 0x00100000 /* Is in debug or abs section. */
219 #define SF_GET_SEGMENT 0x00200000 /* Get the section of the forward symbol. */
220 /* All other bits are unused. */
223 #define SF_GET(s) (* symbol_get_obj (s))
224 #define SF_GET_DEBUG(s) (symbol_get_bfdsym (s)->flags & BSF_DEBUGGING)
225 #define SF_SET_DEBUG(s) (symbol_get_bfdsym (s)->flags |= BSF_DEBUGGING)
226 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK)
227 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK)
228 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE)
229 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS)
230 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED)
231 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING)
232 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL)
233 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION)
234 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS)
235 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED)
236 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG)
237 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT)
240 #define SF_SET(s,v) (SF_GET (s) = (v))
241 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK))
242 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK))
243 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE)
244 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS)
245 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED)
246 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING)
247 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL)
248 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL)
249 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION)
250 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS)
251 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED)
252 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG)
253 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT)
256 /* Line number handling. */
257 extern int text_lineno_number
;
258 extern int coff_line_base
;
259 extern int coff_n_line_nos
;
260 extern symbolS
*coff_last_function
;
262 #define obj_emit_lineno(WHERE, LINE, FILE_START) abort ()
263 #define obj_app_file(name, app) c_dot_file_symbol (name, app)
264 #define obj_frob_symbol(S,P) coff_frob_symbol (S, & P)
265 #define obj_frob_section(S) coff_frob_section (S)
266 #define obj_frob_file_after_relocs() coff_frob_file_after_relocs ()
267 #ifndef obj_adjust_symtab
268 #define obj_adjust_symtab() coff_adjust_symtab ()
271 /* Forward the segment of a forwarded symbol, handle assignments that
272 just copy symbol values, etc. */
273 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
275 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \
276 (SF_GET_GET_SEGMENT (dest) \
277 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
280 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \
281 (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \
282 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \
289 extern const pseudo_typeS coff_pseudo_table
[];
291 #ifndef obj_pop_insert
292 #define obj_pop_insert() pop_insert (coff_pseudo_table)
295 /* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK
296 to redefine the symbol later on. This can happen if C symbols use
297 a prefix, and a symbol is defined both with and without the prefix,
298 as in start/_start/__start in gcc/libgcc1-test.c. */
299 #define RESOLVE_SYMBOL_REDEFINITION(sym) \
300 (SF_GET_GET_SEGMENT (sym) \
301 ? (sym->sy_frag = frag_now, \
302 S_SET_VALUE (sym, frag_now_fix ()), \
303 S_SET_SEGMENT (sym, now_seg), \
307 /* Stabs in a coff file go into their own section. */
308 #define SEPARATE_STAB_SECTIONS 1
310 /* We need 12 bytes at the start of the section to hold some initial
312 #define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg)
314 /* Store the number of relocations in the section aux entry. */
315 #define SET_SECTION_RELOCS(sec, relocs, n) \
316 SA_SET_SCN_NRELOC (section_symbol (sec), n)
318 #define obj_app_file(name, app) c_dot_file_symbol (name, app)
320 extern int S_SET_DATA_TYPE (symbolS
*, int);
321 extern int S_SET_STORAGE_CLASS (symbolS
*, int);
322 extern int S_GET_STORAGE_CLASS (symbolS
*);
323 extern void SA_SET_SYM_ENDNDX (symbolS
*, symbolS
*);
324 extern void coff_add_linesym (symbolS
*);
325 extern void c_dot_file_symbol (const char *, int);
326 extern void coff_frob_symbol (symbolS
*, int *);
327 extern void coff_adjust_symtab (void);
328 extern void coff_frob_section (segT
);
329 extern void coff_adjust_section_syms (bfd
*, asection
*, void *);
330 extern void coff_frob_file_after_relocs (void);
331 extern void coff_obj_symbol_new_hook (symbolS
*);
332 extern void coff_obj_symbol_clone_hook (symbolS
*, symbolS
*);
333 extern void coff_obj_read_begin_hook (void);
335 extern void pecoff_obj_set_weak_hook (symbolS
*);
336 extern void pecoff_obj_clear_weak_hook (symbolS
*);
338 extern void obj_coff_section (int);
339 extern segT
obj_coff_add_segment (const char *);
340 extern void obj_coff_section (int);
341 extern void c_dot_file_symbol (const char *, int);
342 extern segT
s_get_segment (symbolS
*);
343 #ifndef tc_coff_symbol_emit_hook
344 extern void tc_coff_symbol_emit_hook (symbolS
*);
346 extern void obj_coff_pe_handle_link_once (void);
347 extern void obj_coff_init_stab_section (segT
);
348 extern void c_section_header (struct internal_scnhdr
*,
349 char *, long, long, long, long,
350 long, long, long, long);
351 extern void obj_coff_seh_do_final (void);
353 #ifndef obj_coff_generate_pdata
354 #define obj_coff_generate_pdata obj_coff_seh_do_final
358 #endif /* OBJ_FORMAT_H */