1 /* A.out "format 1" file handling code for BFD.
2 Copyright 1990, 1991, 1992, 1993 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"
32 /* This is needed to reject a NewsOS file, e.g. in
34 I needed to add M_UNKNOWN to recognize a 68000 object, so this will
36 #define MACHTYPE_OK(mtype) ((mtype) == M_UNKNOWN \
37 || (mtype) == M_68010 \
38 || (mtype) == M_68020 \
39 || (mtype) == M_SPARC)
42 The file @code{aoutf1.h} contains the code for BFD's
43 a.out back end. Control over the generated back end is given by these
44 two preprocessor names:
47 This value should be either 32 or 64, depending upon the size of an
48 int in the target format. It changes the sizes of the structs which
49 perform the memory/disk mapping of structures.
51 The 64 bit backend may only be used if the host compiler supports 64
52 ints (eg long long with gcc), by defining the name @code{BFD_HOST_64_BIT} in @code{bfd.h}.
53 With this name defined, @emph{all} bfd operations are performed with 64bit
54 arithmetic, not just those to a 64bit target.
57 The name put into the target vector.
67 NAME (sunos, set_arch_mach) (abfd, machtype)
71 /* Determine the architecture and machine type of the object file. */
72 enum bfd_architecture arch;
78 /* Some Sun3s make magic numbers without cpu types in them, so
79 we'll default to the 68000. */
97 arch = bfd_arch_sparc;
103 arch = bfd_arch_i386;
108 arch = bfd_arch_a29k;
113 arch = bfd_arch_m68k;
118 arch = bfd_arch_obscure;
122 bfd_set_arch_mach (abfd, arch, machine);
125 #define SET_ARCH_MACH(ABFD, EXEC) \
126 NAME(sunos,set_arch_mach)(ABFD, N_MACHTYPE (EXEC)); \
127 choose_reloc_size(ABFD);
129 /* Determine the size of a relocation entry, based on the architecture */
131 choose_reloc_size (abfd)
134 switch (bfd_get_arch (abfd))
138 obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
141 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
146 /* Write an object file in SunOS format.
147 Section contents have already been written. We write the
148 file header, symbols, and relocation. */
151 NAME (aout, sunos4_write_object_contents) (abfd)
154 struct external_exec exec_bytes;
155 struct internal_exec *execp = exec_hdr (abfd);
157 /* Magic number, maestro, please! */
158 switch (bfd_get_arch (abfd))
161 switch (bfd_get_mach (abfd))
164 N_SET_MACHTYPE (*execp, M_68010);
168 N_SET_MACHTYPE (*execp, M_68020);
173 N_SET_MACHTYPE (*execp, M_SPARC);
176 N_SET_MACHTYPE (*execp, M_386);
179 N_SET_MACHTYPE (*execp, M_29K);
182 N_SET_MACHTYPE (*execp, M_UNKNOWN);
185 choose_reloc_size (abfd);
188 /* Some tools want this to be 0, some tools want this to be one.
189 Today, it seems that 0 is the most important setting (PR1927) */
190 N_SET_FLAGS (*execp, 0x0);
193 /* Fri Jun 11 14:23:31 PDT 1993
195 Today's optimal setting is 1. This is a pain, since it
196 reopens 1927. This should be readdressed by creating a new
197 target for each each supported, giving perhaps sun3/m68k
198 and sun4/sparc a.out formats.
200 N_SET_FLAGS (*execp, 1);
203 N_SET_DYNAMIC (*execp, bfd_get_file_flags (abfd) & DYNAMIC);
205 /* At least for SunOS, the dynamic symbols and relocs are embedded
206 in the .text section, and we do not want to write them out with
207 the symbol table. FIXME: This may be right if there is any other
208 form of a.out shared libraries. */
209 if ((bfd_get_file_flags (abfd) & DYNAMIC) != 0
210 && bfd_get_outsymbols (abfd) != (asymbol **) NULL)
213 asymbol **sym_ptr_ptr;
215 arelent **rel_ptr_ptr;
217 sym_ptr_ptr = bfd_get_outsymbols (abfd);
218 count = bfd_get_symcount (abfd);
219 for (i = 0; i < count; i++, sym_ptr_ptr++)
221 if (((*sym_ptr_ptr)->flags & BSF_DYNAMIC) != 0)
223 /* This assumes that all dynamic symbols follow all
224 non-dynamic symbols, which is what slurp_symbol_table
227 bfd_get_symcount (abfd) = i;
232 if (obj_textsec (abfd)->reloc_count > 0)
234 rel_ptr_ptr = obj_textsec (abfd)->orelocation;
235 count = obj_textsec (abfd)->reloc_count;
236 for (i = 0; i < count; i++, rel_ptr_ptr++)
238 if (((*(*rel_ptr_ptr)->sym_ptr_ptr)->flags & BSF_DYNAMIC) != 0)
240 /* This assumes that all relocs against dynamic
241 symbols follow all relocs against other symbols,
242 which is what slurp_reloc_table does. */
244 obj_textsec (abfd)->reloc_count = i;
250 if (obj_datasec (abfd)->reloc_count > 0)
252 rel_ptr_ptr = obj_datasec (abfd)->orelocation;
253 count = obj_datasec (abfd)->reloc_count;
254 for (i = 0; i < count; i++, rel_ptr_ptr++)
256 if (((*(*rel_ptr_ptr)->sym_ptr_ptr)->flags & BSF_DYNAMIC) != 0)
259 obj_datasec (abfd)->reloc_count = i;
266 WRITE_HEADERS (abfd, execp);
273 #define CORE_MAGIC 0x080456
274 #define CORE_NAMELEN 16
276 /* The core structure is taken from the Sun documentation.
277 Unfortunately, they don't document the FPA structure, or at least I
278 can't find it easily. Fortunately the core header contains its own
279 length. So this shouldn't cause problems, except for c_ucode, which
280 so far we don't use but is easy to find with a little arithmetic. */
282 /* But the reg structure can be gotten from the SPARC processor handbook.
283 This really should be in a GNU include file though so that gdb can use
308 /* Taken from Sun documentation: */
310 /* FIXME: It's worse than we expect. This struct contains TWO substructs
311 neither of whose size we know, WITH STUFF IN BETWEEN THEM! We can't
312 even portably access the stuff in between! */
314 struct external_sparc_core
316 int c_magic; /* Corefile magic number */
317 int c_len; /* Sizeof (struct core) */
318 #define SPARC_CORE_LEN 432
319 int c_regs[19]; /* General purpose registers -- MACHDEP SIZE */
320 struct external_exec c_aouthdr; /* A.out header */
321 int c_signo; /* Killing signal, if any */
322 int c_tsize; /* Text size (bytes) */
323 int c_dsize; /* Data size (bytes) */
324 int c_ssize; /* Stack size (bytes) */
325 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
326 double fp_stuff[1]; /* external FPU state (size unknown by us) */
327 /* The type "double" is critical here, for alignment.
328 SunOS declares a struct here, but the struct's alignment
329 is double since it contains doubles. */
330 int c_ucode; /* Exception no. from u_code */
331 /* (this member is not accessible by name since we don't
332 portably know the size of fp_stuff.) */
335 struct external_sun3_core
337 int c_magic; /* Corefile magic number */
338 int c_len; /* Sizeof (struct core) */
339 #define SUN3_CORE_LEN 826 /* As of SunOS 4.1.1 */
340 int c_regs[18]; /* General purpose registers -- MACHDEP SIZE */
341 struct external_exec c_aouthdr; /* A.out header */
342 int c_signo; /* Killing signal, if any */
343 int c_tsize; /* Text size (bytes) */
344 int c_dsize; /* Data size (bytes) */
345 int c_ssize; /* Stack size (bytes) */
346 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
347 double fp_stuff[1]; /* external FPU state (size unknown by us) */
348 /* The type "double" is critical here, for alignment.
349 SunOS declares a struct here, but the struct's alignment
350 is double since it contains doubles. */
351 int c_ucode; /* Exception no. from u_code */
352 /* (this member is not accessible by name since we don't
353 portably know the size of fp_stuff.) */
356 struct internal_sunos_core
358 int c_magic; /* Corefile magic number */
359 int c_len; /* Sizeof (struct core) */
360 long c_regs_pos; /* file offset of General purpose registers */
361 int c_regs_size; /* size of General purpose registers */
362 struct internal_exec c_aouthdr; /* A.out header */
363 int c_signo; /* Killing signal, if any */
364 int c_tsize; /* Text size (bytes) */
365 int c_dsize; /* Data size (bytes) */
366 int c_ssize; /* Stack size (bytes) */
367 bfd_vma c_stacktop; /* Stack top (address) */
368 char c_cmdname[CORE_NAMELEN + 1]; /* Command name */
369 long fp_stuff_pos; /* file offset of external FPU state (regs) */
370 int fp_stuff_size; /* Size of it */
371 int c_ucode; /* Exception no. from u_code */
374 /* byte-swap in the Sun-3 core structure */
376 swapcore_sun3 (abfd, ext, intcore)
379 struct internal_sunos_core *intcore;
381 struct external_sun3_core *extcore = (struct external_sun3_core *) ext;
383 intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_magic);
384 intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_len);
385 intcore->c_regs_pos = (long) (((struct external_sun3_core *) 0)->c_regs);
386 intcore->c_regs_size = sizeof (extcore->c_regs);
387 NAME (aout, swap_exec_header_in) (abfd, &extcore->c_aouthdr, &intcore->c_aouthdr);
388 intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_signo);
389 intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_tsize);
390 intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_dsize);
391 intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_ssize);
392 memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
393 intcore->fp_stuff_pos = (long) (((struct external_sun3_core *) 0)->fp_stuff);
394 /* FP stuff takes up whole rest of struct, except c_ucode. */
395 intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
396 (file_ptr) (((struct external_sun3_core *) 0)->fp_stuff);
397 /* Ucode is the last thing in the struct -- just before the end */
400 intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *) extcore);
401 intcore->c_stacktop = 0x0E000000; /* By experimentation */
405 /* byte-swap in the Sparc core structure */
407 swapcore_sparc (abfd, ext, intcore)
410 struct internal_sunos_core *intcore;
412 struct external_sparc_core *extcore = (struct external_sparc_core *) ext;
414 intcore->c_magic = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_magic);
415 intcore->c_len = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_len);
416 intcore->c_regs_pos = (long) (((struct external_sparc_core *) 0)->c_regs);
417 intcore->c_regs_size = sizeof (extcore->c_regs);
418 NAME (aout, swap_exec_header_in) (abfd, &extcore->c_aouthdr, &intcore->c_aouthdr);
419 intcore->c_signo = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_signo);
420 intcore->c_tsize = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_tsize);
421 intcore->c_dsize = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_dsize);
422 intcore->c_ssize = bfd_h_get_32 (abfd, (unsigned char *) &extcore->c_ssize);
423 memcpy (intcore->c_cmdname, extcore->c_cmdname, sizeof (intcore->c_cmdname));
424 intcore->fp_stuff_pos = (long) (((struct external_sparc_core *) 0)->fp_stuff);
425 /* FP stuff takes up whole rest of struct, except c_ucode. */
426 intcore->fp_stuff_size = intcore->c_len - (sizeof extcore->c_ucode) -
427 (file_ptr) (((struct external_sparc_core *) 0)->fp_stuff);
428 /* Ucode is the last thing in the struct -- just before the end */
431 intcore->c_len - sizeof (extcore->c_ucode) + (unsigned char *) extcore);
433 /* Supposedly the user stack grows downward from the bottom of kernel memory.
434 Presuming that this remains true, this definition will work. */
435 /* Now sun has provided us with another challenge. The value is different
436 for sparc2 and sparc10 (both running SunOS 4.1.3). We pick one or
437 the other based on the current value of the stack pointer. This
438 loses (a) if the stack pointer has been clobbered, or (b) if the stack
439 is larger than 128 megabytes.
441 It's times like these you're glad they're switching to ELF.
443 Note that using include files or nlist on /vmunix would be wrong,
444 because we want the value for this core file, no matter what kind of
445 machine we were compiled on or are running on. */
446 #define SPARC_USRSTACK_SPARC2 ((bfd_vma)0xf8000000)
447 #define SPARC_USRSTACK_SPARC10 ((bfd_vma)0xf0000000)
449 bfd_vma sp = bfd_h_get_32
450 (abfd, (unsigned char *) &((struct regs *) &extcore->c_regs[0])->r_o6);
451 if (sp < SPARC_USRSTACK_SPARC10)
452 intcore->c_stacktop = SPARC_USRSTACK_SPARC10;
454 intcore->c_stacktop = SPARC_USRSTACK_SPARC2;
458 /* need this cast because ptr is really void * */
459 #define core_hdr(bfd) ((bfd)->tdata.sun_core_data)
460 #define core_datasec(bfd) (core_hdr(bfd)->data_section)
461 #define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
462 #define core_regsec(bfd) (core_hdr(bfd)->reg_section)
463 #define core_reg2sec(bfd) (core_hdr(bfd)->reg2_section)
465 /* These are stored in the bfd's tdata */
466 struct sun_core_struct
468 struct internal_sunos_core *hdr; /* core file header */
469 asection *data_section;
470 asection *stack_section;
471 asection *reg_section;
472 asection *reg2_section;
476 sunos4_core_file_p (abfd)
479 unsigned char longbuf[4]; /* Raw bytes of various header fields */
482 struct internal_sunos_core *core;
486 struct sun_core_struct suncoredata;
487 struct internal_sunos_core internal_sunos_core;
488 char external_core[1];
492 if (bfd_read ((PTR) longbuf, 1, sizeof (longbuf), abfd) !=
495 core_mag = bfd_h_get_32 (abfd, longbuf);
497 if (core_mag != CORE_MAGIC)
500 /* SunOS core headers can vary in length; second word is size; */
501 if (bfd_read ((PTR) longbuf, 1, sizeof (longbuf), abfd) !=
504 core_size = bfd_h_get_32 (abfd, longbuf);
506 if (core_size > 20000)
509 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) < 0)
512 mergem = (struct mergem *) bfd_zalloc (abfd, core_size + sizeof (struct mergem));
515 bfd_set_error (bfd_error_no_memory);
519 extcore = mergem->external_core;
521 if ((bfd_read ((PTR) extcore, 1, core_size, abfd)) != core_size)
523 bfd_set_error (bfd_error_system_call);
524 bfd_release (abfd, (char *) mergem);
528 /* Validate that it's a core file we know how to handle, due to sun
529 botching the positioning of registers and other fields in a machine
531 core = &mergem->internal_sunos_core;
535 swapcore_sparc (abfd, extcore, core);
538 swapcore_sun3 (abfd, extcore, core);
541 bfd_set_error (bfd_error_system_call); /* FIXME */
542 bfd_release (abfd, (char *) mergem);
546 abfd->tdata.sun_core_data = &mergem->suncoredata;
547 abfd->tdata.sun_core_data->hdr = core;
549 /* create the sections. This is raunchy, but bfd_close wants to reclaim
551 core_stacksec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
552 if (core_stacksec (abfd) == NULL)
555 bfd_set_error (bfd_error_no_memory);
556 bfd_release (abfd, (char *) mergem);
559 core_datasec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
560 if (core_datasec (abfd) == NULL)
563 bfd_release (abfd, core_stacksec (abfd));
566 core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
567 if (core_regsec (abfd) == NULL)
570 bfd_release (abfd, core_datasec (abfd));
573 core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
574 if (core_reg2sec (abfd) == NULL)
576 bfd_release (abfd, core_regsec (abfd));
580 core_stacksec (abfd)->name = ".stack";
581 core_datasec (abfd)->name = ".data";
582 core_regsec (abfd)->name = ".reg";
583 core_reg2sec (abfd)->name = ".reg2";
585 core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
586 core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
587 core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
588 core_reg2sec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
590 core_stacksec (abfd)->_raw_size = core->c_ssize;
591 core_datasec (abfd)->_raw_size = core->c_dsize;
592 core_regsec (abfd)->_raw_size = core->c_regs_size;
593 core_reg2sec (abfd)->_raw_size = core->fp_stuff_size;
595 core_stacksec (abfd)->vma = (core->c_stacktop - core->c_ssize);
596 core_datasec (abfd)->vma = N_DATADDR (core->c_aouthdr);
597 core_regsec (abfd)->vma = 0;
598 core_reg2sec (abfd)->vma = 0;
600 core_stacksec (abfd)->filepos = core->c_len + core->c_dsize;
601 core_datasec (abfd)->filepos = core->c_len;
602 /* We'll access the regs afresh in the core file, like any section: */
603 core_regsec (abfd)->filepos = (file_ptr) core->c_regs_pos;
604 core_reg2sec (abfd)->filepos = (file_ptr) core->fp_stuff_pos;
606 /* Align to word at least */
607 core_stacksec (abfd)->alignment_power = 2;
608 core_datasec (abfd)->alignment_power = 2;
609 core_regsec (abfd)->alignment_power = 2;
610 core_reg2sec (abfd)->alignment_power = 2;
612 abfd->sections = core_stacksec (abfd);
613 core_stacksec (abfd)->next = core_datasec (abfd);
614 core_datasec (abfd)->next = core_regsec (abfd);
615 core_regsec (abfd)->next = core_reg2sec (abfd);
617 abfd->section_count = 4;
623 sunos4_core_file_failing_command (abfd)
626 return core_hdr (abfd)->hdr->c_cmdname;
630 sunos4_core_file_failing_signal (abfd)
633 return core_hdr (abfd)->hdr->c_signo;
637 sunos4_core_file_matches_executable_p (core_bfd, exec_bfd)
641 if (core_bfd->xvec != exec_bfd->xvec)
643 bfd_set_error (bfd_error_system_call);
647 return (memcmp ((char *) &((core_hdr (core_bfd)->hdr)->c_aouthdr),
648 (char *) exec_hdr (exec_bfd),
649 sizeof (struct internal_exec)) == 0) ? true : false;
652 #define MY_set_sizes sunos4_set_sizes
654 sunos4_set_sizes (abfd)
657 switch (bfd_get_arch (abfd))
662 adata (abfd).page_size = 0x2000;
663 adata (abfd).segment_size = 0x2000;
664 adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
667 adata (abfd).page_size = 0x2000;
668 adata (abfd).segment_size = 0x20000;
669 adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE;
674 #ifndef MY_read_dynamic_symbols
675 #define MY_read_dynamic_symbols 0
677 #ifndef MY_read_dynamic_relocs
678 #define MY_read_dynamic_relocs 0
681 static CONST struct aout_backend_data sunos4_aout_backend =
683 0, /* zmagic files are not contiguous */
684 1, /* text includes header */
685 0, /* default text vma */
687 0, /* header is counted in zmagic text */
688 MY_read_dynamic_symbols,
689 MY_read_dynamic_relocs
692 #define MY_core_file_failing_command sunos4_core_file_failing_command
693 #define MY_core_file_failing_signal sunos4_core_file_failing_signal
694 #define MY_core_file_matches_executable_p sunos4_core_file_matches_executable_p
696 #define MY_bfd_debug_info_start bfd_void
697 #define MY_bfd_debug_info_end bfd_void
698 #define MY_bfd_debug_info_accumulate \
699 (void (*) PARAMS ((bfd *, struct sec *))) bfd_void
700 #define MY_core_file_p sunos4_core_file_p
701 #define MY_write_object_contents NAME(aout,sunos4_write_object_contents)
702 #define MY_backend_data &sunos4_aout_backend
704 #define TARGET_IS_BIG_ENDIAN_P
706 #include "aout-target.h"