Initial revision

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
@@ -0,0 +1,404 @@
+/* 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 */
+};