1 files changed, 53 insertions, 0 deletions
diff --git a/gdb/alpha-osf1-tdep.c b/gdb/alpha-osf1-tdep.c
new file mode 100644
index 0000000..97ac6fb
--- /dev/null
+++ b/gdb/alpha-osf1-tdep.c
@@ -0,0 +1,53 @@
+/* Target-dependent code for OSF/1 on Alpha.
+   Copyright 2002 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 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.  */
+
+#include "defs.h"
+#include "frame.h"
+#include "value.h"
+
+#include "alpha-tdep.h"
+
+/* Under OSF/1, the __sigtramp routine is frameless and has a frame
+   size of zero, but we are able to backtrace through it.  */
+static CORE_ADDR
+alpha_osf1_skip_sigtramp_frame (struct frame_info *frame, CORE_ADDR pc)
+{
+  char *name;
+
+  find_pc_partial_function (pc, &name, (CORE_ADDR *) NULL, (CORE_ADDR *) NULL);
+  if (PC_IN_SIGTRAMP (pc, name))
+    return frame->frame;
+  return 0;
+}
+
+static void
+alpha_osf1_init_abi (struct gdbarch_info info,
+                     struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  tdep->skip_sigtramp_frame = alpha_osf1_skip_sigtramp_frame;
+}
+
+void
+_initialize_alpha_osf1_tdep (void)
+{
+  alpha_gdbarch_register_os_abi (ALPHA_ABI_OSF1, alpha_osf1_init_abi);
+}