mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
87 lines
3.3 KiB
C
87 lines
3.3 KiB
C
/* Target-dependent code for GNU/Linux x86.
|
|
|
|
Copyright (C) 2002-2024 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/>. */
|
|
|
|
#ifndef I386_LINUX_TDEP_H
|
|
#define I386_LINUX_TDEP_H
|
|
|
|
#include "gdbsupport/x86-xstate.h"
|
|
|
|
/* The Linux kernel pretends there is an additional "orig_eax"
|
|
register. Since GDB needs access to that register to be able to
|
|
properly restart system calls when necessary (see
|
|
i386-linux-tdep.c) we need our own versions of a number of
|
|
functions that deal with GDB's register cache. */
|
|
|
|
/* Register number for the "orig_eax" pseudo-register. If this
|
|
pseudo-register contains a value >= 0 it is interpreted as the
|
|
system call number that the kernel is supposed to restart. */
|
|
#define I386_LINUX_ORIG_EAX_REGNUM (I386_PKRU_REGNUM + 1)
|
|
|
|
/* Total number of registers for GNU/Linux. */
|
|
#define I386_LINUX_NUM_REGS (I386_LINUX_ORIG_EAX_REGNUM + 1)
|
|
|
|
/* Read the XSAVE extended state xcr0 value from the ABFD core file.
|
|
If it appears to be valid, return it and fill LAYOUT with values
|
|
inferred from that value.
|
|
|
|
Otherwise, return 0 to indicate no state was found and leave LAYOUT
|
|
untouched. */
|
|
extern uint64_t i386_linux_core_read_xsave_info (bfd *abfd,
|
|
x86_xsave_layout &layout);
|
|
|
|
/* Implement the core_read_x86_xsave_layout gdbarch method. */
|
|
extern bool i386_linux_core_read_x86_xsave_layout (struct gdbarch *gdbarch,
|
|
x86_xsave_layout &layout);
|
|
|
|
/* Handle and display information related to the MPX bound violation
|
|
to the user. */
|
|
extern void i386_linux_report_signal_info (struct gdbarch *gdbarch,
|
|
struct ui_out *uiout,
|
|
enum gdb_signal siggnal);
|
|
|
|
/* Return the target description according to XCR0. */
|
|
extern const struct target_desc *i386_linux_read_description (uint64_t xcr0);
|
|
|
|
/* Format of XSAVE extended state is:
|
|
struct
|
|
{
|
|
fxsave_bytes[0..463]
|
|
sw_usable_bytes[464..511]
|
|
xstate_hdr_bytes[512..575]
|
|
extended state regions (AVX, MPX, AVX512, PKRU, etc.)
|
|
};
|
|
|
|
Same memory layout will be used for the coredump NT_X86_XSTATE
|
|
representing the XSAVE extended state registers.
|
|
|
|
The first 8 bytes of the sw_usable_bytes[464..467] is the OS enabled
|
|
extended state mask, which is the same as the extended control register
|
|
0 (the XFEATURE_ENABLED_MASK register), XCR0. We can use this mask
|
|
together with the mask saved in the xstate_hdr_bytes to determine what
|
|
states the processor/OS supports and what state, used or initialized,
|
|
the process/thread is in. */
|
|
#define I386_LINUX_XSAVE_XCR0_OFFSET 464
|
|
|
|
extern int i386_linux_gregset_reg_offset[];
|
|
|
|
/* Return x86 siginfo type. */
|
|
extern struct type *x86_linux_get_siginfo_type (struct gdbarch *gdbarch);
|
|
|
|
#endif /* i386-linux-tdep.h */
|