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. */
25 #include "aout/sun4.h"
26 #include "libaout.h" /* BFD a.out internal data structures */
28 #include "aout/aout64.h"
29 #include "aout/stab_gnu.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)();
60 DEFUN(NAME(sunos,set_arch_mach), (abfd, machtype),
61 bfd *abfd AND int machtype)
63 /* Determine the architecture and machine type of the object file. */
64 enum bfd_architecture arch;
69 /* Some Sun3s make magic numbers without cpu types in them, so
70 we'll default to the 68020. */
88 arch = bfd_arch_sparc;
103 arch = bfd_arch_m68k;
108 arch = bfd_arch_obscure;
112 bfd_set_arch_mach(abfd, arch, machine);
115 #define SET_ARCH_MACH(ABFD, EXEC) \
116 NAME(sunos,set_arch_mach)(ABFD, N_MACHTYPE (EXEC)); \
117 choose_reloc_size(ABFD);
119 /* Determine the size of a relocation entry, based on the architecture */
121 DEFUN(choose_reloc_size,(abfd),
124 switch (bfd_get_arch(abfd)) {
127 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
130 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
135 /* Write an object file in SunOS format.
136 Section contents have already been written. We write the
137 file header, symbols, and relocation. */
140 DEFUN(NAME(aout,sunos4_write_object_contents),
144 struct external_exec exec_bytes;
145 struct internal_exec *execp = exec_hdr (abfd);
147 /* Magic number, maestro, please! */
148 switch (bfd_get_arch(abfd)) {
150 switch (bfd_get_mach(abfd)) {
152 N_SET_MACHTYPE(*execp, M_68010);
156 N_SET_MACHTYPE(*execp, M_68020);
161 N_SET_MACHTYPE(*execp, M_SPARC);
164 N_SET_MACHTYPE(*execp, M_386);
167 N_SET_MACHTYPE(*execp, M_29K);
170 N_SET_MACHTYPE(*execp, M_UNKNOWN);
173 choose_reloc_size(abfd);
176 N_SET_FLAGS (*execp, 0x1);
178 WRITE_HEADERS(abfd, execp);
185 #define CORE_MAGIC 0x080456
186 #define CORE_NAMELEN 16
188 /* The core structure is taken from the Sun documentation.
189 Unfortunately, they don't document the FPA structure, or at least I
190 can't find it easily. Fortunately the core header contains its own
191 length. So this shouldn't cause problems, except for c_ucode, which
192 so far we don't use but is easy to find with a little arithmetic. */
194 /* But the reg structure can be gotten from the SPARC processor handbook.
195 This really should be in a GNU include file though so that gdb can use
219 /* Taken from Sun documentation: */
221 /* FIXME: It's worse than we expect. This struct contains TWO substructs
222 neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't
223 even portably access the stuff in between! */
225 struct external_sparc_core {
226 int c_magic; /* Corefile magic number */
227 int c_len; /* Sizeof (struct core) */
228 #define SPARC_CORE_LEN 432
229 int c_regs[19]; /* General purpose registers -- MACHDEP SIZE */
230 struct external_exec c_aouthdr; /* A.out header */
231 int c_signo; /* Killing signal, if any */
232 int c_tsize; /* Text size (bytes) */
233 int c_dsize; /* Data size (bytes) */
234 int c_ssize; /* Stack size (bytes) */
235 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
236 double fp_stuff[1]; /* external FPU state (size unknown by us) */
237 /* The type "double" is critical here, for alignment.
238 SunOS declares a struct here, but the struct's alignment
239 is double since it contains doubles. */
240 int c_ucode; /* Exception no. from u_code */
241 /* (this member is not accessible by name since we don't
242 portably know the size of fp_stuff.) */
245 struct external_sun3_core {
246 int c_magic; /* Corefile magic number */
247 int c_len; /* Sizeof (struct core) */
248 #define SUN3_CORE_LEN 826 /* As of SunOS 4.1.1 */
249 int c_regs[18]; /* General purpose registers -- MACHDEP SIZE */
250 struct external_exec c_aouthdr; /* A.out header */
251 int c_signo; /* Killing signal, if any */
252 int c_tsize; /* Text size (bytes) */
253 int c_dsize; /* Data size (bytes) */
254 int c_ssize; /* Stack size (bytes) */
255 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
256 double fp_stuff[1]; /* external FPU state (size unknown by us) */
257 /* The type "double" is critical here, for alignment.
258 SunOS declares a struct here, but the struct's alignment
259 is double since it contains doubles. */
260 int c_ucode; /* Exception no. from u_code */
261 /* (this member is not accessible by name since we don't
262 portably know the size of fp_stuff.) */
265 struct internal_sunos_core {
266 int c_magic; /* Corefile magic number */
267 int c_len; /* Sizeof (struct core) */
268 long c_regs_pos; /* file offset of General purpose registers */
269 int c_regs_size; /* size of General purpose registers */
270 struct internal_exec c_aouthdr; /* A.out header */
271 int c_signo; /* Killing signal, if any */
272 int c_tsize; /* Text size (bytes) */
273 int c_dsize; /* Data size (bytes) */
274 int c_ssize; /* Stack size (bytes) */
275 long c_stacktop; /* Stack top (address) */
276 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
277 long fp_stuff_pos; /* file offset of external FPU state (regs) */
278 int fp_stuff_size; /* Size of it */
279 int c_ucode; /* Exception no. from u_code */
282 /* byte-swap in the Sun-3 core structure */
284 DEFUN(swapcore_sun3,(abfd, ext, intcore),
287 struct internal_sunos_core *intcore)
289 struct external_sun3_core *extcore = (struct external_sun3_core *)ext;
291 intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_magic);
292 intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_len );
293 intcore->c_regs_pos = (long) (((struct external_sun3_core *)0)->c_regs);
294 intcore->c_regs_size = sizeof (extcore->c_regs);
295 NAME(aout,swap_exec_header_in)(abfd, &extcore->c_aouthdr,&intcore->c_aouthdr);
296 intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_signo);
297 intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_tsize);
298 intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_dsize);
299 intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_ssize);
300 memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
301 intcore->fp_stuff_pos = (long) (((struct external_sun3_core *)0)->fp_stuff);
302 /* FP stuff takes up whole rest of struct, except c_ucode. */
303 intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
304 (file_ptr)(((struct external_sun3_core *)0)->fp_stuff);
305 /* Ucode is the last thing in the struct -- just before the end */
308 intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *)extcore);
309 intcore->c_stacktop = 0x0E000000; /* By experimentation */
313 /* byte-swap in the Sparc core structure */
315 DEFUN(swapcore_sparc,(abfd, ext, intcore),
318 struct internal_sunos_core *intcore)
320 struct external_sparc_core *extcore = (struct external_sparc_core *)ext;
322 intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_magic);
323 intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_len );
324 intcore->c_regs_pos = (long) (((struct external_sparc_core *)0)->c_regs);
325 intcore->c_regs_size = sizeof (extcore->c_regs);
326 NAME(aout,swap_exec_header_in)(abfd, &extcore->c_aouthdr,&intcore->c_aouthdr);
327 intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_signo);
328 intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_tsize);
329 intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_dsize);
330 intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *)&extcore->c_ssize);
331 memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
332 intcore->fp_stuff_pos = (long) (((struct external_sparc_core *)0)->fp_stuff);
333 /* FP stuff takes up whole rest of struct, except c_ucode. */
334 intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
335 (file_ptr)(((struct external_sparc_core *)0)->fp_stuff);
336 /* Ucode is the last thing in the struct -- just before the end */
339 intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *)extcore);
340 /* Supposedly the user stack grows downward from the bottom of kernel memory.
341 Presuming that this remains true, this definition will work. */
342 #define SPARC_USRSTACK (-(128*1024*1024))
343 intcore->c_stacktop = SPARC_USRSTACK; /* By experimentation */
346 /* need this cast because ptr is really void * */
347 #define core_hdr(bfd) ((bfd)->tdata.sun_core_data)
348 #define core_datasec(bfd) (core_hdr(bfd)->data_section)
349 #define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
350 #define core_regsec(bfd) (core_hdr(bfd)->reg_section)
351 #define core_reg2sec(bfd) (core_hdr(bfd)->reg2_section)
353 /* These are stored in the bfd's tdata */
354 struct sun_core_struct {
355 struct internal_sunos_core *hdr; /* core file header */
356 asection *data_section;
357 asection *stack_section;
358 asection *reg_section;
359 asection *reg2_section;
363 DEFUN(sunos4_core_file_p,(abfd),
366 unsigned char longbuf[4]; /* Raw bytes of various header fields */
369 struct internal_sunos_core *core;
372 struct sun_core_struct suncoredata;
373 struct internal_sunos_core internal_sunos_core;
374 char external_core[1];
377 bfd_error = system_call_error;
379 if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
382 core_mag = bfd_h_get_32 (abfd, longbuf);
384 if (core_mag != CORE_MAGIC) return 0;
386 /* SunOS core headers can vary in length; second word is size; */
387 if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) !=
390 core_size = bfd_h_get_32 (abfd, longbuf);
392 if (core_size > 20000)
395 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) < 0) return 0;
397 mergem = (struct mergem *)bfd_zalloc (abfd, core_size + sizeof (struct mergem));
398 if (mergem == NULL) {
399 bfd_error = no_memory;
403 extcore = mergem->external_core;
405 if ((bfd_read ((PTR) extcore, 1, core_size, abfd)) != core_size) {
406 bfd_error = system_call_error;
407 bfd_release (abfd, (char *)mergem);
411 /* Validate that it's a core file we know how to handle, due to sun
412 botching the positioning of registers and other fields in a machine
414 core = &mergem->internal_sunos_core;
417 swapcore_sparc (abfd, extcore, core);
420 swapcore_sun3 (abfd, extcore, core);
423 bfd_error = system_call_error; /* FIXME */
424 bfd_release (abfd, (char *)mergem);
428 abfd->tdata.sun_core_data = &mergem->suncoredata;
429 abfd->tdata.sun_core_data->hdr = core;
431 /* create the sections. This is raunchy, but bfd_close wants to reclaim
433 core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
434 if (core_stacksec (abfd) == NULL) {
436 bfd_error = no_memory;
437 bfd_release (abfd, (char *)mergem);
440 core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
441 if (core_datasec (abfd) == NULL) {
443 bfd_release (abfd, core_stacksec (abfd));
446 core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
447 if (core_regsec (abfd) == NULL) {
449 bfd_release (abfd, core_datasec (abfd));
452 core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
453 if (core_reg2sec (abfd) == NULL) {
454 bfd_release (abfd, core_regsec (abfd));
458 core_stacksec (abfd)->name = ".stack";
459 core_datasec (abfd)->name = ".data";
460 core_regsec (abfd)->name = ".reg";
461 core_reg2sec (abfd)->name = ".reg2";
463 core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
464 core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
465 core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
466 core_reg2sec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
468 core_stacksec (abfd)->_raw_size = core->c_ssize;
469 core_datasec (abfd)->_raw_size = core->c_dsize;
470 core_regsec (abfd)->_raw_size = core->c_regs_size;
471 core_reg2sec (abfd)->_raw_size = core->fp_stuff_size;
473 core_stacksec (abfd)->vma = (core->c_stacktop - core->c_ssize);
474 core_datasec (abfd)->vma = N_DATADDR(core->c_aouthdr);
475 core_regsec (abfd)->vma = 0;
476 core_reg2sec (abfd)->vma = 0;
478 core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
479 core_datasec (abfd)->filepos = core->c_len;
480 /* We'll access the regs afresh in the core file, like any section: */
481 core_regsec (abfd)->filepos = (file_ptr)core->c_regs_pos;
482 core_reg2sec (abfd)->filepos = (file_ptr)core->fp_stuff_pos;
484 /* Align to word at least */
485 core_stacksec (abfd)->alignment_power = 2;
486 core_datasec (abfd)->alignment_power = 2;
487 core_regsec (abfd)->alignment_power = 2;
488 core_reg2sec (abfd)->alignment_power = 2;
490 abfd->sections = core_stacksec (abfd);
491 core_stacksec (abfd)->next = core_datasec (abfd);
492 core_datasec (abfd)->next = core_regsec (abfd);
493 core_regsec (abfd)->next = core_reg2sec (abfd);
495 abfd->section_count = 4;
500 static char *sunos4_core_file_failing_command (abfd)
503 return core_hdr (abfd)->hdr->c_cmdname;
507 DEFUN(sunos4_core_file_failing_signal,(abfd),
510 return core_hdr (abfd)->hdr->c_signo;
514 DEFUN(sunos4_core_file_matches_executable_p, (core_bfd, exec_bfd),
518 if (core_bfd->xvec != exec_bfd->xvec) {
519 bfd_error = system_call_error;
523 return (memcmp ((char *)&((core_hdr (core_bfd)->hdr)->c_aouthdr),
524 (char *) exec_hdr (exec_bfd),
525 sizeof (struct internal_exec)) == 0) ? true : false;
528 extern reloc_howto_type aout_32_ext_howto_table[];
530 static reloc_howto_type *
531 DEFUN (sunos4_reloc_type_lookup, (abfd, code),
533 bfd_reloc_code_real_type code)
535 switch (bfd_get_arch (abfd))
544 #define IDX(i,j) case i: return &aout_32_ext_howto_table[j]
545 IDX (BFD_RELOC_CTOR, 2);
546 IDX (BFD_RELOC_32, 2);
547 IDX (BFD_RELOC_HI22, 8);
548 IDX (BFD_RELOC_LO10, 11);
549 IDX (BFD_RELOC_32_PCREL_S2, 6);
555 DEFUN (sunos4_set_sizes, (abfd),
558 switch (bfd_get_arch (abfd))
563 adata(abfd).page_size = 0x2000;
564 adata(abfd).segment_size = 0x2000;
565 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
568 adata(abfd).page_size = 0x2000;
569 adata(abfd).segment_size = 0x20000;
570 adata(abfd).exec_bytes_size = EXEC_BYTES_SIZE;
575 static CONST struct aout_backend_data sunos4_aout_backend = {
576 0, 1, 0, sunos4_set_sizes, 0,
579 #define MY_core_file_failing_command sunos4_core_file_failing_command
580 #define MY_core_file_failing_signal sunos4_core_file_failing_signal
581 #define MY_core_file_matches_executable_p sunos4_core_file_matches_executable_p
583 #define MY_bfd_debug_info_start bfd_void
584 #define MY_bfd_debug_info_end bfd_void
585 #define MY_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
586 #define MY_core_file_p sunos4_core_file_p
587 #define MY_write_object_contents NAME(aout,sunos4_write_object_contents)
588 #define MY_backend_data &sunos4_aout_backend
590 #define TARGET_IS_BIG_ENDIAN_P
592 #include "aout-target.h"