gdb/

* Makefile.in: Add gdb-dlfcn.c and gdb-dlfcn.h to build system. * config.in: Add new #define HAVE_LIBDL. * configure.ac: Add check for -ldl. * configure: Re-generated by autoconf. * gdb-dlfcn.c: New file. * gdb-dlfcn.h: New file.
2011-11-20 08:59:56 +00:00 · 2011-11-20 08:59:56 +00:00 · a2d08b9eeb
commit a2d08b9eeb
parent b8e0a31cb5
7 changed files with 268 additions and 5 deletions
--- a/gdb/gdb-dlfcn.c
+++ b/gdb/gdb-dlfcn.c
@ -0,0 +1,139 @@
+/* Platform independent shared object routines for GDB.
+
+   Copyright (C) 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   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.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "defs.h"
+#include "gdb_assert.h"
+
+#include "gdb-dlfcn.h"
+
+#ifdef HAVE_DLFCN_H
+#include <dlfcn.h>
+#elif __MINGW32__
+#include <windows.h>
+#else
+/* Unsupported configuration. */
+#define NO_SHARED_LIB
+#endif
+
+#ifdef NO_SHARED_LIB
+
+void *
+gdb_dlopen (const char *filename)
+{
+  gdb_assert_not_reached ("gdb_dlopen should not be called on this platform.");
+}
+
+void *
+gdb_dlsym (void *handle, const char *symbol)
+{
+  gdb_assert_not_reached ("gdb_dlsym should not be called on this platform.");
+}
+
+struct cleanup *
+make_cleanup_dlclose (void *handle)
+{
+  gdb_assert_not_reached ("make_cleanup_dlclose should not be called on this "
+                          "platform.");
+}
+
+int
+gdb_dlclose (void *handle)
+{
+  gdb_assert_not_reached ("gdb_dlclose should not be called on this platform.");
+}
+
+int
+is_dl_available (void)
+{
+  return 0;
+}
+
+#else /* NO_SHARED_LIB */
+
+void *
+gdb_dlopen (const char *filename)
+{
+  void *result;
+#ifdef HAVE_DLFCN_H
+  result = dlopen (filename, RTLD_NOW);
+#elif __MINGW32__
+  result = (void *) LoadLibrary (filename);
+#endif
+  if (result != NULL)
+    return result;
+
+#ifdef HAVE_DLFCN_H
+  error (_("Could not load %s: %s"), filename, dlerror());
+#else
+  {
+    LPVOID buffer;
+    DWORD dw;
+
+    dw = GetLastError();
+
+    FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+                   FORMAT_MESSAGE_IGNORE_INSERTS,
+                   NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                   (LPTSTR) &buffer
+                   0, NULL);
+
+    error (_("Could not load %s: %s"), filename, (char *) buffer);
+  }
+#endif
+}
+
+void *
+gdb_dlsym (void *handle, const char *symbol)
+{
+#ifdef HAVE_DLFCN_H
+  return dlsym (handle, symbol);
+#elif __MINGW32__
+  return (void *) GetProcAddress (handle, symbol);
+#endif
+}
+
+int
+gdb_dlclose (void *handle)
+{
+#ifdef HAVE_DLFCN_H
+  return dlclose (handle);
+#elif __MINGW32__
+  return !((int) FreeLibrary (handle));
+#endif
+}
+
+static void
+do_dlclose_cleanup (void *handle)
+{
+  gdb_dlclose (handle);
+}
+
+struct cleanup *
+make_cleanup_dlclose (void *handle)
+{
+  return make_cleanup (do_dlclose_cleanup, handle);
+}
+
+int
+is_dl_available (void)
+{
+  return 1;
+}
+
+#endif /* NO_SHARED_LIB */