mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
fb2be677dc
* frame-unwind.c (struct frame_unwind_table, frame_unwind_init) (frame_unwind_prepend_unwinder, frame_unwind_append_sniffer) (frame_unwind_find_by_frame): Re-implement the unwind code so that it can both prepend and append sniffers. Replace frame_unwind_register_unwinder with frame_unwind_prepend_unwinder. * tramp-frame.c (tramp_frame_append): Use frame_unwind_prepend_unwinder. * frame-unwind.h (frame_unwind_prepend_unwinder): Replace frame_unwind_register_unwinder. * tramp-frame.h (tramp_frame_prepend_unwinder): Rename tramp_frame_append. * tramp-frame.c (tramp_frame_prepend_unwinder): Update. * mips-linux-tdep.c (mips_linux_init_abi, mips_linux_init_abi) (mips_linux_init_abi): Update.
70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
/* Signal trampoline unwinder, for GDB the GNU Debugger.
|
|
|
|
Copyright 2004 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. */
|
|
|
|
#ifndef TRAMP_FRAME_H
|
|
#define TRAMP_FRAME_H
|
|
|
|
struct trad_frame;
|
|
struct frame_info;
|
|
struct trad_frame_cache;
|
|
|
|
/* A trampoline consists of a small sequence of instructions placed at
|
|
an unspecified location in the inferior's address space. The only
|
|
identifying attribute of the trampoline's address is that it does
|
|
not fall inside an object file's section.
|
|
|
|
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
|
|
operation. */
|
|
|
|
/* A trampoline descriptor. */
|
|
|
|
/* Magic instruction that to mark the end of the signal trampoline
|
|
instruction sequence. */
|
|
#define TRAMP_SENTINEL_INSN ((LONGEST) -1)
|
|
|
|
struct tramp_frame
|
|
{
|
|
/* The trampoline's entire instruction sequence. Search for this in
|
|
the inferior at or around the frame's PC. It is assumed that the
|
|
PC is INSN_SIZE aligned, and that each element of TRAMP contains
|
|
one INSN_SIZE instruction. It is also assumed that TRAMP[0]
|
|
contains the first instruction of the trampoline and hence the
|
|
address of the instruction matching TRAMP[0] is the trampoline's
|
|
"func" address. The instruction sequence shall be terminated by
|
|
TRAMP_SENTINEL_INSN. */
|
|
int insn_size;
|
|
ULONGEST insn[8];
|
|
/* 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 trad_frame_cache *this_cache,
|
|
CORE_ADDR func);
|
|
};
|
|
|
|
void tramp_frame_prepend_unwinder (struct gdbarch *gdbarch,
|
|
const struct tramp_frame *tramp);
|
|
|
|
#endif
|