gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / bfd / corefile.c

diff --git a/bfd/corefile.c b/bfd/corefile.c
index f9ece647e1c527e06f30096d7e3a1e3bfb063698..0ce23de46257a7c7bf9ba4295b50eaea08080ddc 100644 (file)
--- a/bfd/corefile.c
+++ b/bfd/corefile.c
@@ -1,34 +1,37 @@
 /* Core file generic interface routines for BFD.
-   Copyright 1990, 1991, 1992, 1993, 1994, 2000, 2001, 2002, 2003
-   Free Software Foundation, Inc.
+   Copyright (C) 1990-2020 Free Software Foundation, Inc.
    Written by Cygnus Support.
 
-This file is part of BFD, the Binary File Descriptor library.
+   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 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 3 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.
+   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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
+   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., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
 
 /*
 SECTION
        Core files
 
+SUBSECTION
+       Core file functions
+
 DESCRIPTION
        These are functions pertaining to core files.
 */
 
-#include "bfd.h"
 #include "sysdep.h"
+#include "bfd.h"
 #include "libbfd.h"
 
 /*
@@ -78,6 +81,31 @@ bfd_core_file_failing_signal (bfd *abfd)
   return BFD_SEND (abfd, _core_file_failing_signal, (abfd));
 }
 
+/*
+FUNCTION
+       bfd_core_file_pid
+
+SYNOPSIS
+       int bfd_core_file_pid (bfd *abfd);
+
+DESCRIPTION
+
+       Returns the PID of the process the core dump the BFD
+       @var{abfd} is attached to was generated from.
+*/
+
+int
+bfd_core_file_pid (bfd *abfd)
+{
+  if (abfd->format != bfd_core)
+    {
+      bfd_set_error (bfd_error_invalid_operation);
+      return 0;
+    }
+  return BFD_SEND (abfd, _core_file_pid, (abfd));
+}
+
+
 /*
 FUNCTION
        core_file_matches_executable_p
@@ -104,3 +132,59 @@ core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
   return BFD_SEND (core_bfd, _core_file_matches_executable_p,
                   (core_bfd, exec_bfd));
 }
+
+/*
+FUNCTION
+       generic_core_file_matches_executable_p
+
+SYNOPSIS
+       bfd_boolean generic_core_file_matches_executable_p
+         (bfd *core_bfd, bfd *exec_bfd);
+
+DESCRIPTION
+       Return TRUE if the core file attached to @var{core_bfd}
+       was generated by a run of the executable file attached
+       to @var{exec_bfd}.  The match is based on executable
+       basenames only.
+
+       Note: When not able to determine the core file failing
+       command or the executable name, we still return TRUE even
+       though we're not sure that core file and executable match.
+       This is to avoid generating a false warning in situations
+       where we really don't know whether they match or not.
+*/
+
+bfd_boolean
+generic_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
+{
+  const char *exec;
+  const char *core;
+  const char *last_slash;
+
+  if (exec_bfd == NULL || core_bfd == NULL)
+    return TRUE;
+
+  /* The cast below is to avoid a compiler warning due to the assignment
+     of the const char * returned by bfd_core_file_failing_command to a
+     non-const char *.  In this case, the assignement does not lead to
+     breaking the const, as we're only reading the string.  */
+
+  core = bfd_core_file_failing_command (core_bfd);
+  if (core == NULL)
+    return TRUE;
+
+  exec = bfd_get_filename (exec_bfd);
+  if (exec == NULL)
+    return TRUE;
+
+  last_slash = strrchr (core, '/');
+  if (last_slash != NULL)
+    core = last_slash + 1;
+
+  last_slash = strrchr (exec, '/');
+  if (last_slash != NULL)
+    exec = last_slash + 1;
+
+  return filename_cmp (exec, core) == 0;
+}
+