-/* Signal trampoline unwinder, for GDB the GNU Debugger.
+/* Signal trampoline unwinder.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004-2019 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
+ 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,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef TRAMP_FRAME_H
#define TRAMP_FRAME_H
The only way to identify a trampoline is to perform a brute force
examination of the instructions at and around the PC.
- This module provides a convent interface for performing that
+ This module provides a convenient interface for performing that
operation. */
/* A trampoline descriptor. */
/* Magic instruction that to mark the end of the signal trampoline
instruction sequence. */
-#define TRAMP_SENTINEL_INSN ((LONGEST) -1)
+#define TRAMP_SENTINEL_INSN ULONGEST_MAX
struct tramp_frame
{
{
ULONGEST bytes;
ULONGEST mask;
- } insn[8];
+ } insn[48];
/* Initialize a trad-frame cache corresponding to the tramp-frame.
FUNC is the address of the instruction TRAMP[0] in memory. */
void (*init) (const struct tramp_frame *self,
- struct frame_info *next_frame,
+ struct frame_info *this_frame,
struct trad_frame_cache *this_cache,
CORE_ADDR func);
+ /* Return non-zero if the tramp-frame is valid for the PC requested.
+ Adjust the PC to point to the address to check the instruction
+ sequence against if required. If this is NULL, then the tramp-frame
+ is valid for any PC. */
+ int (*validate) (const struct tramp_frame *self,
+ struct frame_info *this_frame,
+ CORE_ADDR *pc);
};
void tramp_frame_prepend_unwinder (struct gdbarch *gdbarch,