1 /* A.out "format 1" file handling code
2 Copyright (C) 1990-1991 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
23 #include <a.out.sun4.h>
33 The file @code{aoutf1.h} contains the code for BFD's
34 a.out back end. Control over the generated back end is given by these
35 two preprocessor names:
38 This value should be either 32 or 64, depending upon the size of an
39 int in the target format. It changes the sizes of the structs which
40 perform the memory/disk mapping of structures.
42 The 64 bit backend may only be used if the host compiler supports 64
43 ints (eg long long with gcc), by defining the name @code{HOST_64_BIT} in @code{bfd.h}.
44 With this name defined, @emph{all} bfd operations are performed with 64bit
45 arithmetic, not just those to a 64bit target.
48 The name put into the target vector.
54 void (*bfd_error_trap)();
56 static bfd_target *sunos4_callback ();
62 DEFUN(NAME(sunos,object_p), (abfd),
65 unsigned char magicbuf[4]; /* Raw bytes of magic number from file */
66 unsigned long magic; /* Swapped magic number */
68 bfd_error = system_call_error;
70 if (bfd_read ((PTR)magicbuf, 1 , 4, abfd) !=
73 magic = bfd_h_get_32 (abfd, magicbuf);
75 if (N_BADMAG (*((struct internal_exec *) &magic))) return 0;
77 return NAME(aout,some_aout_object_p) (abfd, sunos4_callback);
80 /* Determine the size of a relocation entry, based on the architecture */
82 DEFUN(choose_reloc_size,(abfd),
85 switch (abfd->obj_arch) {
88 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
91 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
96 /* Set parameters about this a.out file that are machine-dependent.
97 This routine is called from some_aout_object_p just before it returns. */
100 sunos4_callback (abfd)
103 struct internal_exec *execp = exec_hdr (abfd);
105 WORK_OUT_FILE_POSITIONS(abfd, execp);
107 /* Determine the architecture and machine type of the object file. */
108 switch (N_MACHTYPE (*exec_hdr (abfd))) {
111 abfd->obj_arch = bfd_arch_unknown;
112 abfd->obj_machine = 0;
116 abfd->obj_arch = bfd_arch_m68k;
117 abfd->obj_machine = 68010;
121 abfd->obj_arch = bfd_arch_m68k;
122 abfd->obj_machine = 68020;
126 abfd->obj_arch = bfd_arch_sparc;
127 abfd->obj_machine = 0;
131 abfd->obj_arch = bfd_arch_i386;
132 abfd->obj_machine = 0;
136 abfd->obj_arch = bfd_arch_a29k;
137 abfd->obj_machine = 0;
141 abfd->obj_arch = bfd_arch_obscure;
142 abfd->obj_machine = 0;
146 choose_reloc_size(abfd);
151 /* Write an object file in SunOS format.
152 Section contents have already been written. We write the
153 file header, symbols, and relocation. */
156 DEFUN(NAME(aout,sunos4_write_object_contents),(abfd),
160 bfd_size_type data_pad = 0;
161 struct external_exec exec_bytes;
162 struct internal_exec *execp = exec_hdr (abfd);
166 execp->a_text = obj_textsec (abfd)->size;
168 /* Magic number, maestro, please! */
169 switch (bfd_get_architecture(abfd)) {
171 switch (bfd_get_machine(abfd)) {
173 N_SET_MACHTYPE(*execp, M_68010);
177 N_SET_MACHTYPE(*execp, M_68020);
182 N_SET_MACHTYPE(*execp, M_SPARC);
185 N_SET_MACHTYPE(*execp, M_386);
188 N_SET_MACHTYPE(*execp, M_29K);
191 N_SET_MACHTYPE(*execp, M_UNKNOWN);
194 choose_reloc_size(abfd);
197 N_SET_FLAGS (*execp, 0x1);
199 WRITE_HEADERS(abfd, execp);
206 #define CORE_MAGIC 0x080456
207 #define CORE_NAMELEN 16
209 /* The core structure is taken from the Sun documentation.
210 Unfortunately, they don't document the FPA structure, or at least I
211 can't find it easily. Fortunately the core header contains its own
212 length. So this shouldn't cause problems, except for c_ucode, which
213 so far we don't use but is easy to find with a little arithmetic. */
215 /* But the reg structure can be gotten from the SPARC processor handbook.
216 This really should be in a GNU include file though so that gdb can use
240 /* Taken from Sun documentation: */
242 /* FIXME: It's worse than we expect. This struct contains TWO substructs
243 neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't
244 even portably access the stuff in between! */
246 struct external_sparc_core {
247 int c_magic; /* Corefile magic number */
248 int c_len; /* Sizeof (struct core) */
249 #define SPARC_CORE_LEN 432
250 int c_regs[19]; /* General purpose registers -- MACHDEP SIZE */
251 struct external_exec c_aouthdr; /* A.out header */
252 int c_signo; /* Killing signal, if any */
253 int c_tsize; /* Text size (bytes) */
254 int c_dsize; /* Data size (bytes) */
255 int c_ssize; /* Stack size (bytes) */
256 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
257 double fp_stuff[1]; /* external FPU state (size unknown by us) */
258 /* The type "double" is critical here, for alignment.
259 SunOS declares a struct here, but the struct's alignment
260 is double since it contains doubles. */
261 int c_ucode; /* Exception no. from u_code */
262 /* (this member is not accessible by name since we don't
263 portably know the size of fp_stuff.) */
266 struct external_sun3_core {
267 int c_magic; /* Corefile magic number */
268 int c_len; /* Sizeof (struct core) */
269 #define SUN3_CORE_LEN 826 /* As of SunOS 4.1.1 */
270 int c_regs[18]; /* General purpose registers -- MACHDEP SIZE */
271 struct external_exec c_aouthdr; /* A.out header */
272 int c_signo; /* Killing signal, if any */
273 int c_tsize; /* Text size (bytes) */
274 int c_dsize; /* Data size (bytes) */
275 int c_ssize; /* Stack size (bytes) */
276 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
277 double fp_stuff[1]; /* external FPU state (size unknown by us) */
278 /* The type "double" is critical here, for alignment.
279 SunOS declares a struct here, but the struct's alignment
280 is double since it contains doubles. */
281 int c_ucode; /* Exception no. from u_code */
282 /* (this member is not accessible by name since we don't
283 portably know the size of fp_stuff.) */
286 struct internal_sunos_core {
287 int c_magic; /* Corefile magic number */
288 int c_len; /* Sizeof (struct core) */
289 long c_regs_pos; /* file offset of General purpose registers */
290 int c_regs_size; /* size of General purpose registers */
291 struct internal_exec c_aouthdr; /* A.out header */
292 int c_signo; /* Killing signal, if any */
293 int c_tsize; /* Text size (bytes) */
294 int c_dsize; /* Data size (bytes) */
295 int c_ssize; /* Stack size (bytes) */
296 long c_stacktop; /* Stack top (address) */
297 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
298 long fp_stuff_pos; /* file offset of external FPU state (regs) */
299 int fp_stuff_size; /* Size of it */
300 int c_ucode; /* Exception no. from u_code */
303 /* byte-swap in the Sun-3 core structure */
305 DEFUN(swapcore_sun3,(abfd, ext, intcore),
308 struct internal_sunos_core *intcore)
310 struct external_sun3_core *extcore = (struct external_sun3_core *)ext;
312 intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_magic);
313 intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_len );
314 intcore->c_regs_pos = (long) (((struct external_sun3_core *)0)->c_regs);
315 intcore->c_regs_size = sizeof (extcore->c_regs);
316 NAME(aout,swap_exec_header_in)(abfd, &extcore->c_aouthdr,&intcore->c_aouthdr);
317 intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_signo);
318 intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_tsize);
319 intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_dsize);
320 intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_ssize);
321 bcopy (extcore->c_cmdname, intcore->c_cmdname, sizeof (intcore->c_cmdname));
322 intcore->fp_stuff_pos = (long) (((struct external_sun3_core *)0)->fp_stuff);
323 /* FP stuff takes up whole rest of struct, except c_ucode. */
324 intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
325 (file_ptr)(((struct external_sun3_core *)0)->fp_stuff);
326 /* Ucode is the last thing in the struct -- just before the end */
327 intcore->c_ucode = bfd_h_get_32 (abfd,
328 intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *)extcore);
329 intcore->c_stacktop = 0x0E000000; /* By experimentation */
333 /* byte-swap in the Sparc core structure */
335 DEFUN(swapcore_sparc,(abfd, ext, intcore),
338 struct internal_sunos_core *intcore)
340 struct external_sparc_core *extcore = (struct external_sparc_core *)ext;
342 intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_magic);
343 intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_len );
344 intcore->c_regs_pos = (long) (((struct external_sparc_core *)0)->c_regs);
345 intcore->c_regs_size = sizeof (extcore->c_regs);
346 NAME(aout,swap_exec_header_in)(abfd, &extcore->c_aouthdr,&intcore->c_aouthdr);
347 intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_signo);
348 intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_tsize);
349 intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_dsize);
350 intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_ssize);
351 bcopy (extcore->c_cmdname, intcore->c_cmdname, sizeof (intcore->c_cmdname));
352 intcore->fp_stuff_pos = (long) (((struct external_sparc_core *)0)->fp_stuff);
353 /* FP stuff takes up whole rest of struct, except c_ucode. */
354 intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
355 (file_ptr)(((struct external_sparc_core *)0)->fp_stuff);
356 /* Ucode is the last thing in the struct -- just before the end */
357 intcore->c_ucode = bfd_h_get_32 (abfd,
358 intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *)extcore);
359 /* Supposedly the user stack grows downward from the bottom of kernel memory.
360 Presuming that this remains true, this definition will work. */
361 #define SPARC_USRSTACK (-(128*1024*1024))
362 intcore->c_stacktop = SPARC_USRSTACK; /* By experimentation */
365 /* need this cast because ptr is really void * */
366 #define core_hdr(bfd) (((struct suncoredata *) (bfd->tdata))->hdr)
367 #define core_datasec(bfd) (((struct suncoredata *) ((bfd)->tdata))->data_section)
368 #define core_stacksec(bfd) (((struct suncoredata*)((bfd)->tdata))->stack_section)
369 #define core_regsec(bfd) (((struct suncoredata *) ((bfd)->tdata))->reg_section)
370 #define core_reg2sec(bfd) (((struct suncoredata *) ((bfd)->tdata))->reg2_section)
372 /* These are stored in the bfd's tdata */
374 struct internal_sunos_core *hdr; /* core file header */
375 asection *data_section;
376 asection *stack_section;
377 asection *reg_section;
378 asection *reg2_section;
382 DEFUN(sunos4_core_file_p,(abfd),
385 unsigned char longbuf[4]; /* Raw bytes of various header fields */
388 struct internal_sunos_core *core;
391 struct suncoredata suncoredata;
392 struct internal_sunos_core internal_sunos_core;
393 char external_core[1];
396 bfd_error = system_call_error;
398 if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
401 core_mag = bfd_h_get_32 (abfd, longbuf);
403 if (core_mag != CORE_MAGIC) return 0;
405 /* SunOS core headers can vary in length; second word is size; */
406 if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
409 core_size = bfd_h_get_32 (abfd, longbuf);
411 if (core_size > 20000)
414 if (bfd_seek (abfd, 0L, false) < 0) return 0;
416 mergem = (struct mergem *)bfd_zalloc (abfd, core_size + sizeof (struct mergem));
417 if (mergem == NULL) {
418 bfd_error = no_memory;
422 extcore = mergem->external_core;
424 if ((bfd_read ((PTR) extcore, 1, core_size, abfd)) != core_size) {
425 bfd_error = system_call_error;
426 bfd_release (abfd, (char *)mergem);
430 /* Validate that it's a core file we know how to handle, due to sun
431 botching the positioning of registers and other fields in a machine
433 core = &mergem->internal_sunos_core;
436 swapcore_sparc (abfd, extcore, core);
439 swapcore_sun3 (abfd, extcore, core);
442 bfd_error = system_call_error; /* FIXME */
443 bfd_release (abfd, (char *)mergem);
447 set_tdata (abfd, &mergem->suncoredata);
448 core_hdr (abfd) = core;
450 /* create the sections. This is raunchy, but bfd_close wants to reclaim
452 core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
453 if (core_stacksec (abfd) == NULL) {
455 bfd_error = no_memory;
456 bfd_release (abfd, (char *)mergem);
459 core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
460 if (core_datasec (abfd) == NULL) {
462 bfd_release (abfd, core_stacksec (abfd));
465 core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
466 if (core_regsec (abfd) == NULL) {
468 bfd_release (abfd, core_datasec (abfd));
471 core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
472 if (core_reg2sec (abfd) == NULL) {
473 bfd_release (abfd, core_regsec (abfd));
477 core_stacksec (abfd)->name = ".stack";
478 core_datasec (abfd)->name = ".data";
479 core_regsec (abfd)->name = ".reg";
480 core_reg2sec (abfd)->name = ".reg2";
482 core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
483 core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
484 core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
485 core_reg2sec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
487 core_stacksec (abfd)->size = core->c_ssize;
488 core_datasec (abfd)->size = core->c_dsize;
489 core_regsec (abfd)->size = core->c_regs_size;
490 core_reg2sec (abfd)->size = core->fp_stuff_size;
492 core_stacksec (abfd)->vma = (core->c_stacktop - core->c_ssize);
493 core_datasec (abfd)->vma = N_DATADDR(core->c_aouthdr);
494 core_regsec (abfd)->vma = -1;
495 core_reg2sec (abfd)->vma = -1;
497 core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
498 core_datasec (abfd)->filepos = core->c_len;
499 /* We'll access the regs afresh in the core file, like any section: */
500 core_regsec (abfd)->filepos = (file_ptr)core->c_regs_pos;
501 core_reg2sec (abfd)->filepos = (file_ptr)core->fp_stuff_pos;
503 /* Align to word at least */
504 core_stacksec (abfd)->alignment_power = 2;
505 core_datasec (abfd)->alignment_power = 2;
506 core_regsec (abfd)->alignment_power = 2;
507 core_reg2sec (abfd)->alignment_power = 2;
509 abfd->sections = core_stacksec (abfd);
510 core_stacksec (abfd)->next = core_datasec (abfd);
511 core_datasec (abfd)->next = core_regsec (abfd);
512 core_regsec (abfd)->next = core_reg2sec (abfd);
514 abfd->section_count = 4;
519 static char *sunos4_core_file_failing_command (abfd)
522 return core_hdr (abfd)->c_cmdname;
526 DEFUN(sunos4_core_file_failing_signal,(abfd),
529 return core_hdr (abfd)->c_signo;
533 DEFUN(sunos4_core_file_matches_executable_p, (core_bfd, exec_bfd),
537 if (core_bfd->xvec != exec_bfd->xvec) {
538 bfd_error = system_call_error;
542 return (bcmp ((char *)&core_hdr (core_bfd)->c_aouthdr,
543 (char *) exec_hdr (exec_bfd),
544 sizeof (struct internal_exec)) == 0) ? true : false;
547 /* We use BFD generic archive files. */
548 #define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
549 #define aout_32_generic_stat_arch_elt bfd_generic_stat_arch_elt
550 #define aout_32_slurp_armap bfd_slurp_bsd_armap
551 #define aout_32_slurp_extended_name_table bfd_true
552 #define aout_32_write_armap bsd_write_armap
553 #define aout_32_truncate_arname bfd_bsd_truncate_arname
554 #define aout_32_machine_type sunos_machine_type
556 #define aout_32_core_file_failing_command sunos4_core_file_failing_command
557 #define aout_32_core_file_failing_signal sunos4_core_file_failing_signal
558 #define aout_32_core_file_matches_executable_p sunos4_core_file_matches_executable_p
561 #define aout_64_openr_next_archived_file bfd_generic_openr_next_archived_file
562 #define aout_64_generic_stat_arch_elt bfd_generic_stat_arch_elt
563 #define aout_64_slurp_armap bfd_slurp_bsd_armap
564 #define aout_64_slurp_extended_name_table bfd_true
565 #define aout_64_write_armap bsd_write_armap
566 #define aout_64_truncate_arname bfd_bsd_truncate_arname
567 #define aout_64_machine_type sunos_machine_type
569 #define aout_64_core_file_failing_command sunos4_core_file_failing_command
570 #define aout_64_core_file_failing_signal sunos4_core_file_failing_signal
571 #define aout_64_core_file_matches_executable_p sunos4_core_file_matches_executable_p
573 #define aout_64_bfd_debug_info_start bfd_void
574 #define aout_64_bfd_debug_info_end bfd_void
575 #define aout_64_bfd_debug_info_accumulate bfd_void
577 #define aout_32_bfd_debug_info_start bfd_void
578 #define aout_32_bfd_debug_info_end bfd_void
579 #define aout_32_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
583 /* We implement these routines ourselves, rather than using the generic
585 #define aout_write_object_contents sunos4_write_object_contents
590 bfd_target_aout_flavour_enum,
591 true, /* target byte order */
592 true, /* target headers byte order */
593 (HAS_RELOC | EXEC_P | /* object flags */
594 HAS_LINENO | HAS_DEBUG |
595 HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
596 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
597 ' ', /* ar_pad_char */
598 16, /* ar_max_namelen */
599 3, /* minimum alignment power */
600 _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
601 _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
603 {_bfd_dummy_target, NAME(sunos,object_p),
604 bfd_generic_archive_p, sunos4_core_file_p},
605 {bfd_false, NAME(aout,mkobject),
606 _bfd_generic_mkarchive, bfd_false},
607 {bfd_false, NAME(aout,sunos4_write_object_contents), /* bfd_write_contents */
608 _bfd_write_archive_contents, bfd_false},
610 JUMP_TABLE(JNAME(aout))