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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:06 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:06 +0000
commit860acaebec6b57ce27e244cc02a58e6651a4b6c3 (patch)
treeeff5420756a4bd56b40b74c2b828b261f327610b /bfd/hpux-core.c
parentf9c53ad2d7cb541cbe821d645b90437ac063e5db (diff)
downloadgdb-860acaebec6b57ce27e244cc02a58e6651a4b6c3.tar.gz
Initial revision
Diffstat (limited to 'bfd/hpux-core.c')
-rw-r--r--bfd/hpux-core.c404
1 files changed, 404 insertions, 0 deletions
diff --git a/bfd/hpux-core.c b/bfd/hpux-core.c
new file mode 100644
index 00000000000..6be709f4999
--- /dev/null
+++ b/bfd/hpux-core.c
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+/* BFD back-end for HP/UX core files.
+ Copyright 1993, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
+ Written by Stu Grossman, Cygnus Support.
+ Converted to back-end form by Ian Lance Taylor, Cygnus SUpport
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+/* This file can only be compiled on systems which use HP/UX style
+ core files. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+
+#if defined (HOST_HPPAHPUX) || defined (HOST_HP300HPUX) || defined (HOST_HPPAMPEIX)
+
+/* FIXME: sys/core.h doesn't exist for HPUX version 7. HPUX version
+ 5, 6, and 7 core files seem to be standard trad-core.c type core
+ files; can we just use trad-core.c in addition to this file? */
+
+#include <sys/core.h>
+#include <sys/utsname.h>
+
+#endif /* HOST_HPPAHPUX */
+
+#ifdef HOST_HPPABSD
+
+/* Not a very swift place to put it, but that's where the BSD port
+ puts them. */
+#include "/hpux/usr/include/sys/core.h"
+
+#endif /* HOST_HPPABSD */
+
+#include <sys/param.h>
+#ifdef HAVE_DIRENT_H
+# include <dirent.h>
+#else
+# ifdef HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# ifdef HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# ifdef HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif
+#include <signal.h>
+#include <machine/reg.h>
+#include <sys/user.h> /* After a.out.h */
+#include <sys/file.h>
+
+/* Kludge: There's no explicit mechanism provided by sys/core.h to
+ conditionally know whether a proc_info has thread id fields.
+ However, CORE_ANON_SHMEM shows up first at 10.30, which is
+ happily also when meaningful thread id's show up in proc_info. */
+#if defined(CORE_ANON_SHMEM)
+#define PROC_INFO_HAS_THREAD_ID (1)
+#endif
+
+/* This type appears at HP-UX 10.30. Defining it if not defined
+ by sys/core.h allows us to build for older HP-UX's, and (since
+ it won't be encountered in core-dumps from older HP-UX's) is
+ harmless. */
+#if !defined(CORE_ANON_SHMEM)
+#define CORE_ANON_SHMEM 0x00000200 /* anonymous shared memory */
+#endif
+
+/* These are stored in the bfd's tdata */
+
+/* .lwpid and .user_tid are only valid if PROC_INFO_HAS_THREAD_ID, else they
+ are set to 0. Also, until HP-UX implements MxN threads, .user_tid and
+ .lwpid are synonymous. */
+struct hpux_core_struct
+{
+ int sig;
+ int lwpid; /* Kernel thread ID. */
+ unsigned long user_tid; /* User thread ID. */
+ char cmd[MAXCOMLEN + 1];
+};
+
+#define core_hdr(bfd) ((bfd)->tdata.hpux_core_data)
+#define core_signal(bfd) (core_hdr(bfd)->sig)
+#define core_command(bfd) (core_hdr(bfd)->cmd)
+#define core_kernel_thread_id(bfd) (core_hdr(bfd)->lwpid)
+#define core_user_thread_id(bfd) (core_hdr(bfd)->user_tid)
+
+static void swap_abort PARAMS ((void));
+
+static asection *
+make_bfd_asection (abfd, name, flags, _raw_size, vma, alignment_power)
+ bfd *abfd;
+ CONST char *name;
+ flagword flags;
+ bfd_size_type _raw_size;
+ bfd_vma vma;
+ unsigned int alignment_power;
+{
+ asection *asect;
+ char *newname;
+
+ newname = bfd_alloc (abfd, strlen (name) + 1);
+ if (!newname)
+ return NULL;
+
+ strcpy (newname, name);
+
+ asect = bfd_make_section_anyway (abfd, newname);
+ if (!asect)
+ return NULL;
+
+ asect->flags = flags;
+ asect->_raw_size = _raw_size;
+ asect->vma = vma;
+ asect->filepos = bfd_tell (abfd);
+ asect->alignment_power = alignment_power;
+
+ return asect;
+}
+
+static asymbol *
+hpux_core_make_empty_symbol (abfd)
+ bfd *abfd;
+{
+ asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
+ if (new)
+ new->the_bfd = abfd;
+ return new;
+}
+
+
+/* this function builds a bfd target if the file is a corefile.
+ It returns null or 0 if it finds out thaat it is not a core file.
+ The way it checks this is by looking for allowed 'type' field values.
+ These are declared in sys/core.h
+ There are some values which are 'reserved for future use'. In particular
+ CORE_NONE is actually defined as 0. This may be a catch-all for cases
+ in which the core file is generated by some non-hpux application.
+ (I am just guessing here!)
+*/
+static const bfd_target *
+hpux_core_core_file_p (abfd)
+ bfd *abfd;
+{
+ int good_sections = 0;
+ int unknown_sections = 0;
+
+ core_hdr (abfd) = (struct hpux_core_struct *)
+ bfd_zalloc (abfd, sizeof (struct hpux_core_struct));
+ if (!core_hdr (abfd))
+ return NULL;
+
+ while (1)
+ {
+ int val;
+ struct corehead core_header;
+
+ val = bfd_read ((void *) &core_header, 1, sizeof core_header, abfd);
+ if (val <= 0)
+ break;
+ switch (core_header.type)
+ {
+ case CORE_KERNEL:
+ case CORE_FORMAT:
+ bfd_seek (abfd, core_header.len, SEEK_CUR); /* Just skip this */
+ good_sections++;
+ break;
+ case CORE_EXEC:
+ {
+ struct proc_exec proc_exec;
+ if (bfd_read ((void *) &proc_exec, 1, core_header.len, abfd)
+ != core_header.len)
+ break;
+ strncpy (core_command (abfd), proc_exec.cmd, MAXCOMLEN + 1);
+ good_sections++;
+ }
+ break;
+ case CORE_PROC:
+ {
+ struct proc_info proc_info;
+ char secname[100]; /* Of arbitrary size, but plenty large. */
+
+ /* We need to read this section, 'cause we need to determine
+ whether the core-dumped app was threaded before we create
+ any .reg sections. */
+ if (bfd_read (&proc_info, 1, core_header.len, abfd)
+ != core_header.len)
+ break;
+
+ /* However, we also want to create those sections with the
+ file positioned at the start of the record, it seems. */
+ if (bfd_seek (abfd, -core_header.len, SEEK_CUR) != 0)
+ break;
+
+#if defined(PROC_INFO_HAS_THREAD_ID)
+ core_kernel_thread_id (abfd) = proc_info.lwpid;
+ core_user_thread_id (abfd) = proc_info.user_tid;
+#else
+ core_kernel_thread_id (abfd) = 0;
+ core_user_thread_id (abfd) = 0;
+#endif
+ /* If the program was unthreaded, then we'll just create a
+ .reg section.
+
+ If the program was threaded, then we'll create .reg/XXXXX
+ section for each thread, where XXXXX is a printable
+ representation of the kernel thread id. We'll also
+ create a .reg section for the thread that was running
+ and signalled at the time of the core-dump (i.e., this
+ is effectively an alias, needed to keep GDB happy.)
+
+ Note that we use `.reg/XXXXX' as opposed to '.regXXXXX'
+ because GDB expects that .reg2 will be the floating-
+ point registers. */
+ if (core_kernel_thread_id (abfd) == 0)
+ {
+ if (!make_bfd_asection (abfd, ".reg",
+ SEC_HAS_CONTENTS,
+ core_header.len,
+ (int) &proc_info - (int) & proc_info.hw_regs,
+ 2))
+ return NULL;
+ }
+ else
+ {
+ /* There are threads. Is this the one that caused the
+ core-dump? We'll claim it was the running thread. */
+ if (proc_info.sig != -1)
+ {
+ if (!make_bfd_asection (abfd, ".reg",
+ SEC_HAS_CONTENTS,
+ core_header.len,
+ (int) &proc_info - (int) & proc_info.hw_regs,
+ 2))
+ return NULL;
+ }
+ /* We always make one of these sections, for every thread. */
+ sprintf (secname, ".reg/%d", core_kernel_thread_id (abfd));
+ if (!make_bfd_asection (abfd, secname,
+ SEC_HAS_CONTENTS,
+ core_header.len,
+ (int) &proc_info - (int) & proc_info.hw_regs,
+ 2))
+ return NULL;
+ }
+ core_signal (abfd) = proc_info.sig;
+ if (bfd_seek (abfd, core_header.len, SEEK_CUR) != 0)
+ break;
+ good_sections++;
+ }
+ break;
+
+ case CORE_DATA:
+ case CORE_STACK:
+ case CORE_TEXT:
+ case CORE_MMF:
+ case CORE_SHM:
+ case CORE_ANON_SHMEM:
+ if (!make_bfd_asection (abfd, ".data",
+ SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
+ core_header.len, core_header.addr, 2))
+ return NULL;
+
+ bfd_seek (abfd, core_header.len, SEEK_CUR);
+ good_sections++;
+ break;
+
+ case CORE_NONE:
+ /* Let's not punt if we encounter a section of unknown
+ type. Rather, let's make a note of it. If we later
+ see that there were also "good" sections, then we'll
+ declare that this a core file, but we'll also warn that
+ it may be incompatible with this gdb.
+ */
+ unknown_sections++;
+ break;
+
+ default: return 0; /*unrecognized core file type */
+ }
+ }
+
+ /* OK, we believe you. You're a core file (sure, sure). */
+
+ /* Were there sections of unknown type? If so, yet there were
+ at least some complete sections of known type, then, issue
+ a warning. Possibly the core file was generated on a version
+ of HP-UX that is incompatible with that for which this gdb was
+ built.
+ */
+ if ((unknown_sections > 0) && (good_sections > 0))
+ (*_bfd_error_handler)
+ ("%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",
+ abfd->filename);
+
+ return abfd->xvec;
+}
+
+static char *
+hpux_core_core_file_failing_command (abfd)
+ bfd *abfd;
+{
+ return core_command (abfd);
+}
+
+/* ARGSUSED */
+static int
+hpux_core_core_file_failing_signal (abfd)
+ bfd *abfd;
+{
+ return core_signal (abfd);
+}
+
+/* ARGSUSED */
+static boolean
+hpux_core_core_file_matches_executable_p (core_bfd, exec_bfd)
+ bfd *core_bfd, *exec_bfd;
+{
+ return true; /* FIXME, We have no way of telling at this point */
+}
+
+#define hpux_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
+#define hpux_core_get_symtab _bfd_nosymbols_get_symtab
+#define hpux_core_print_symbol _bfd_nosymbols_print_symbol
+#define hpux_core_get_symbol_info _bfd_nosymbols_get_symbol_info
+#define hpux_core_bfd_is_local_label_name \
+ _bfd_nosymbols_bfd_is_local_label_name
+#define hpux_core_get_lineno _bfd_nosymbols_get_lineno
+#define hpux_core_find_nearest_line _bfd_nosymbols_find_nearest_line
+#define hpux_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
+#define hpux_core_read_minisymbols _bfd_nosymbols_read_minisymbols
+#define hpux_core_minisymbol_to_symbol _bfd_nosymbols_minisymbol_to_symbol
+
+/* If somebody calls any byte-swapping routines, shoot them. */
+static void
+swap_abort()
+{
+ abort(); /* This way doesn't require any declaration for ANSI to fuck up */
+}
+#define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort )
+#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
+#define NO_SIGNED_GET \
+ ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
+
+const bfd_target hpux_core_vec =
+ {
+ "hpux-core",
+ bfd_target_unknown_flavour,
+ BFD_ENDIAN_BIG, /* target byte order */
+ BFD_ENDIAN_BIG, /* target headers byte order */
+ (HAS_RELOC | EXEC_P | /* object flags */
+ HAS_LINENO | HAS_DEBUG |
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ 0, /* symbol prefix */
+ ' ', /* ar_pad_char */
+ 16, /* ar_max_namelen */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
+
+ { /* bfd_check_format */
+ _bfd_dummy_target, /* unknown format */
+ _bfd_dummy_target, /* object file */
+ _bfd_dummy_target, /* archive */
+ hpux_core_core_file_p /* a core file */
+ },
+ { /* bfd_set_format */
+ bfd_false, bfd_false,
+ bfd_false, bfd_false
+ },
+ { /* bfd_write_contents */
+ bfd_false, bfd_false,
+ bfd_false, bfd_false
+ },
+
+ BFD_JUMP_TABLE_GENERIC (_bfd_generic),
+ BFD_JUMP_TABLE_COPY (_bfd_generic),
+ BFD_JUMP_TABLE_CORE (hpux_core),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
+ BFD_JUMP_TABLE_SYMBOLS (hpux_core),
+ BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
+ BFD_JUMP_TABLE_WRITE (_bfd_generic),
+ BFD_JUMP_TABLE_LINK (_bfd_nolink),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ (PTR) 0 /* backend_data */
+};