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22ca5c1027
Refactor i386fbsd_core_read_xcr0 to fetch and return a corresponding x86_xsave_layout as well as xcr0 using the size of an existing NT_X86_XSTATE core dump to determine the offsets via i387_guess_xsave_layout. Use this to add an implementation of gdbarch_core_xfer_x86_xsave_layout. Use tdep->xsave_layout.sizeof_xsave as the size of the XSTATE register set and only fetch/store the register set if this size is non-zero. Approved-By: Simon Marchi <simon.marchi@efficios.com>
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/* Target-dependent code for FreeBSD x86.
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Copyright (C) 2015-2023 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 3 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, see <http://www.gnu.org/licenses/>. */
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#ifndef I386_FBSD_TDEP_H
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#define I386_FBSD_TDEP_H
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#include "gdbsupport/x86-xstate.h"
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#include "regset.h"
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/* Read the XSAVE extended state xcr0 value from the ABFD core file.
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If it appears to be valid, return it and fill LAYOUT with values
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inferred from that value.
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Otherwise, return 0 to indicate no state was found and leave LAYOUT
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untouched. */
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uint64_t i386_fbsd_core_read_xsave_info (bfd *abfd, x86_xsave_layout &layout);
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/* Implement the core_read_x86_xsave_layout gdbarch method. */
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bool i386_fbsd_core_read_x86_xsave_layout (struct gdbarch *gdbarch,
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x86_xsave_layout &layout);
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/* The format of the XSAVE extended area is determined by hardware.
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Cores store the XSAVE extended area in a NT_X86_XSTATE note that
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matches the layout on Linux. */
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#define I386_FBSD_XSAVE_XCR0_OFFSET 464
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extern const struct regset i386_fbsd_gregset;
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#endif /* i386-fbsd-tdep.h */
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