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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.
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Copyright 2004 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef TRAMP_FRAME_H
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#define TRAMP_FRAME_H
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struct trad_frame;
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struct frame_info;
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struct trad_frame_cache;
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/* A trampoline consists of a small sequence of instructions placed at
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an unspecified location in the inferior's address space. The only
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identifying attribute of the trampoline's address is that it does
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not fall inside an object file's section.
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The only way to identify a trampoline is to perform a brute force
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examination of the instructions at and around the PC.
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This module provides a convent interface for performing that
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operation. */
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/* A trampoline descriptor. */
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/* Magic instruction that to mark the end of the signal trampoline
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instruction sequence. */
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#define TRAMP_SENTINEL_INSN ((LONGEST) -1)
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struct tramp_frame
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{
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/* The trampoline's entire instruction sequence. Search for this in
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the inferior at or around the frame's PC. It is assumed that the
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PC is INSN_SIZE aligned, and that each element of TRAMP contains
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one INSN_SIZE instruction. It is also assumed that TRAMP[0]
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contains the first instruction of the trampoline and hence the
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address of the instruction matching TRAMP[0] is the trampoline's
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"func" address. The instruction sequence shall be terminated by
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TRAMP_SENTINEL_INSN. */
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int insn_size;
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ULONGEST insn[8];
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/* Initialize a trad-frame cache corresponding to the tramp-frame.
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FUNC is the address of the instruction TRAMP[0] in memory. */
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void (*init) (const struct tramp_frame *self,
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struct frame_info *next_frame,
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struct trad_frame_cache *this_cache,
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CORE_ADDR func);
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};
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void tramp_frame_prepend_unwinder (struct gdbarch *gdbarch,
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const struct tramp_frame *tramp);
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#endif
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