1 /* BFD back-end for HP/UX core files.
2 Copyright 1993, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
3 Written by Stu Grossman, Cygnus Support.
4 Converted to back-end form by Ian Lance Taylor, Cygnus SUpport
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* This file can only be compiled on systems which use HP/UX style
29 #if defined (HOST_HPPAHPUX) || defined (HOST_HP300HPUX)
31 /* FIXME: sys/core.h doesn't exist for HPUX version 7. HPUX version
32 5, 6, and 7 core files seem to be standard trad-core.c type core
33 files; can we just use trad-core.c in addition to this file? */
36 #include <sys/utsname.h>
38 #endif /* HOST_HPPAHPUX */
42 /* Not a very swift place to put it, but that's where the BSD port
44 #include "/hpux/usr/include/sys/core.h"
46 #endif /* HOST_HPPABSD */
48 #include <sys/param.h>
51 #include <machine/reg.h>
52 #include <sys/user.h> /* After a.out.h */
55 /* Kludge: There's no explicit mechanism provided by sys/core.h to
56 conditionally know whether a proc_info has thread id fields.
57 However, CORE_ANON_SHMEM shows up first at 10.30, which is
58 happily also when meaningful thread id's show up in proc_info. */
59 #if defined(CORE_ANON_SHMEM)
60 #define PROC_INFO_HAS_THREAD_ID (1)
63 /* This type appears at HP-UX 10.30. Defining it if not defined
64 by sys/core.h allows us to build for older HP-UX's, and (since
65 it won't be encountered in core-dumps from older HP-UX's) is
67 #if !defined(CORE_ANON_SHMEM)
68 #define CORE_ANON_SHMEM 0x00000200 /* anonymous shared memory */
71 /* These are stored in the bfd's tdata */
73 /* .lwpid and .user_tid are only valid if PROC_INFO_HAS_THREAD_ID, else they
74 are set to 0. Also, until HP-UX implements MxN threads, .user_tid and
75 .lwpid are synonymous. */
76 struct hpux_core_struct
79 int lwpid; /* Kernel thread ID. */
80 unsigned long user_tid; /* User thread ID. */
81 char cmd[MAXCOMLEN + 1];
84 #define core_hdr(bfd) ((bfd)->tdata.hpux_core_data)
85 #define core_signal(bfd) (core_hdr(bfd)->sig)
86 #define core_command(bfd) (core_hdr(bfd)->cmd)
87 #define core_kernel_thread_id(bfd) (core_hdr(bfd)->lwpid)
88 #define core_user_thread_id(bfd) (core_hdr(bfd)->user_tid)
90 static void swap_abort PARAMS ((void));
93 make_bfd_asection (abfd, name, flags, _raw_size, vma, alignment_power)
97 bfd_size_type _raw_size;
99 unsigned int alignment_power;
104 newname = bfd_alloc (abfd, strlen (name) + 1);
108 strcpy (newname, name);
110 asect = bfd_make_section_anyway (abfd, newname);
114 asect->flags = flags;
115 asect->_raw_size = _raw_size;
117 asect->filepos = bfd_tell (abfd);
118 asect->alignment_power = alignment_power;
124 hpux_core_make_empty_symbol (abfd)
127 asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
134 /* this function builds a bfd target if the file is a corefile.
135 It returns null or 0 if it finds out thaat it is not a core file.
136 The way it checks this is by looking for allowed 'type' field values.
137 These are declared in sys/core.h
138 There are some values which are 'reserved for future use'. In particular
139 CORE_NONE is actually defined as 0. This may be a catch-all for cases
140 in which the core file is generated by some non-hpux application.
141 (I am just guessing here!)
143 static const bfd_target *
144 hpux_core_core_file_p (abfd)
147 int good_sections = 0;
148 int unknown_sections = 0;
150 core_hdr (abfd) = (struct hpux_core_struct *)
151 bfd_zalloc (abfd, sizeof (struct hpux_core_struct));
152 if (!core_hdr (abfd))
158 struct corehead core_header;
160 val = bfd_read ((void *) &core_header, 1, sizeof core_header, abfd);
163 switch (core_header.type)
167 bfd_seek (abfd, core_header.len, SEEK_CUR); /* Just skip this */
172 struct proc_exec proc_exec;
173 if (bfd_read ((void *) &proc_exec, 1, core_header.len, abfd)
176 strncpy (core_command (abfd), proc_exec.cmd, MAXCOMLEN + 1);
182 struct proc_info proc_info;
183 char secname[100]; /* Of arbitrary size, but plenty large. */
185 /* We need to read this section, 'cause we need to determine
186 whether the core-dumped app was threaded before we create
187 any .reg sections. */
188 if (bfd_read (&proc_info, 1, core_header.len, abfd)
192 /* However, we also want to create those sections with the
193 file positioned at the start of the record, it seems. */
194 if (bfd_seek (abfd, -core_header.len, SEEK_CUR) != 0)
197 #if defined(PROC_INFO_HAS_THREAD_ID)
198 core_kernel_thread_id (abfd) = proc_info.lwpid;
199 core_user_thread_id (abfd) = proc_info.user_tid;
201 core_kernel_thread_id (abfd) = 0;
202 core_user_thread_id (abfd) = 0;
204 /* If the program was unthreaded, then we'll just create a
207 If the program was threaded, then we'll create .reg/XXXXX
208 section for each thread, where XXXXX is a printable
209 representation of the kernel thread id. We'll also
210 create a .reg section for the thread that was running
211 and signalled at the time of the core-dump (i.e., this
212 is effectively an alias, needed to keep GDB happy.)
214 Note that we use `.reg/XXXXX' as opposed to '.regXXXXX'
215 because GDB expects that .reg2 will be the floating-
217 if (core_kernel_thread_id (abfd) == 0)
219 if (!make_bfd_asection (abfd, ".reg",
222 (int) &proc_info - (int) & proc_info.hw_regs,
228 /* There are threads. Is this the one that caused the
229 core-dump? We'll claim it was the running thread. */
230 if (proc_info.sig != -1)
232 if (!make_bfd_asection (abfd, ".reg",
235 (int) &proc_info - (int) & proc_info.hw_regs,
239 /* We always make one of these sections, for every thread. */
240 sprintf (secname, ".reg/%d", core_kernel_thread_id (abfd));
241 if (!make_bfd_asection (abfd, secname,
244 (int) &proc_info - (int) & proc_info.hw_regs,
248 core_signal (abfd) = proc_info.sig;
249 if (bfd_seek (abfd, core_header.len, SEEK_CUR) != 0)
260 case CORE_ANON_SHMEM:
261 if (!make_bfd_asection (abfd, ".data",
262 SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
263 core_header.len, core_header.addr, 2))
266 bfd_seek (abfd, core_header.len, SEEK_CUR);
271 /* Let's not punt if we encounter a section of unknown
272 type. Rather, let's make a note of it. If we later
273 see that there were also "good" sections, then we'll
274 declare that this a core file, but we'll also warn that
275 it may be incompatible with this gdb.
280 default: return 0; /*unrecognized core file type */
284 /* OK, we believe you. You're a core file (sure, sure). */
286 /* Were there sections of unknown type? If so, yet there were
287 at least some complete sections of known type, then, issue
288 a warning. Possibly the core file was generated on a version
289 of HP-UX that is incompatible with that for which this gdb was
292 if ((unknown_sections > 0) && (good_sections > 0))
293 warning ("%s appears to be a core file,\nbut contains unknown sections. It may have been created on an incompatible\nversion of HP-UX. As a result, some information may be unavailable.\n",
300 hpux_core_core_file_failing_command (abfd)
303 return core_command (abfd);
308 hpux_core_core_file_failing_signal (abfd)
311 return core_signal (abfd);
316 hpux_core_core_file_matches_executable_p (core_bfd, exec_bfd)
317 bfd *core_bfd, *exec_bfd;
319 return true; /* FIXME, We have no way of telling at this point */
322 #define hpux_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
323 #define hpux_core_get_symtab _bfd_nosymbols_get_symtab
324 #define hpux_core_print_symbol _bfd_nosymbols_print_symbol
325 #define hpux_core_get_symbol_info _bfd_nosymbols_get_symbol_info
326 #define hpux_core_bfd_is_local_label_name \
327 _bfd_nosymbols_bfd_is_local_label_name
328 #define hpux_core_get_lineno _bfd_nosymbols_get_lineno
329 #define hpux_core_find_nearest_line _bfd_nosymbols_find_nearest_line
330 #define hpux_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
331 #define hpux_core_read_minisymbols _bfd_nosymbols_read_minisymbols
332 #define hpux_core_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
334 /* If somebody calls any byte-swapping routines, shoot them. */
338 abort(); /* This way doesn't require any declaration for ANSI to fuck up */
340 #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort )
341 #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
342 #define NO_SIGNED_GET \
343 ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
345 const bfd_target hpux_core_vec =
348 bfd_target_unknown_flavour,
349 BFD_ENDIAN_BIG, /* target byte order */
350 BFD_ENDIAN_BIG, /* target headers byte order */
351 (HAS_RELOC | EXEC_P | /* object flags */
352 HAS_LINENO | HAS_DEBUG |
353 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
354 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
355 0, /* symbol prefix */
356 ' ', /* ar_pad_char */
357 16, /* ar_max_namelen */
358 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
359 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
360 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
361 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
362 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
363 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
365 { /* bfd_check_format */
366 _bfd_dummy_target, /* unknown format */
367 _bfd_dummy_target, /* object file */
368 _bfd_dummy_target, /* archive */
369 hpux_core_core_file_p /* a core file */
371 { /* bfd_set_format */
372 bfd_false, bfd_false,
375 { /* bfd_write_contents */
376 bfd_false, bfd_false,
380 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
381 BFD_JUMP_TABLE_COPY (_bfd_generic),
382 BFD_JUMP_TABLE_CORE (hpux_core),
383 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
384 BFD_JUMP_TABLE_SYMBOLS (hpux_core),
385 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
386 BFD_JUMP_TABLE_WRITE (_bfd_generic),
387 BFD_JUMP_TABLE_LINK (_bfd_nolink),
388 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
390 (PTR) 0 /* backend_data */