mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-01-06 12:09:26 +08:00
c14993e9dc
When creating a core file from within GDB we include a NT_GDB_TDESC that includes the target description of the architecture in use. For architectures with dynamic architectures (e.g. AArch64 with sve/sme) the original architecture, calculated from the original target description, might not match the per-thread architecture. In the general case, where each thread has a different architecture, then we really need a separate NT_GDB_TDESC for each thread, however, there's currently no way to read in multiple NT_GDB_TDESC. This commit is a step towards per-thread NT_GDB_TDESC. In this commit I have updated the function that writes the NT_GDB_TDESC to accept a gdbarch (rather than calling target_gdbarch() to find a gdbarch), and I now pass in the gdbarch of the signalled thread. In many cases (though NOT all) targets with dynamic architectures really only use a single architecture, even when there are multiple threads, so in the common case, this should ensure that GDB emits an architecture that is more likely to be correct. Additional work will be needed in order to support corefiles with truly per-thread architectures, but that will need to be done in the future.
49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
/* Copyright (C) 2021-2023 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/>. */
|
|
|
|
/* This file contains generic functions for writing ELF based core files. */
|
|
|
|
#if !defined (GCORE_ELF_H)
|
|
#define GCORE_ELF_H 1
|
|
|
|
#include "gdb_bfd.h"
|
|
#include "gdbsupport/gdb_signals.h"
|
|
#include "gcore.h"
|
|
|
|
struct gdbarch;
|
|
struct thread_info;
|
|
|
|
/* Add content to *NOTE_DATA (and update *NOTE_SIZE) to describe the
|
|
registers of thread INFO. Report the thread as having stopped with
|
|
STOP_SIGNAL. The core file is being written to OBFD, and GDBARCH is the
|
|
architecture for which the core file is being generated. */
|
|
|
|
extern void gcore_elf_build_thread_register_notes
|
|
(struct gdbarch *gdbarch, struct thread_info *info, gdb_signal stop_signal,
|
|
bfd *obfd, gdb::unique_xmalloc_ptr<char> *note_data, int *note_size);
|
|
|
|
/* Add content to *NOTE_DATA (and update *NOTE_SIZE) to include a note
|
|
containing the target description for GDBARCH. The core file is
|
|
being written to OBFD. If something goes wrong then *NOTE_DATA can be
|
|
set to nullptr. */
|
|
|
|
extern void gcore_elf_make_tdesc_note
|
|
(struct gdbarch *gdbarch, bfd *obfd,
|
|
gdb::unique_xmalloc_ptr<char> *note_data, int *note_size);
|
|
|
|
#endif /* GCORE_ELF_H */
|