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- /* Target-dependent code for GNU/Linux x86.
- Copyright (C) 2002-2022 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
- /* 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)
- /* Get XSAVE extended state xcr0 from core dump. */
- extern uint64_t i386_linux_core_read_xcr0 (bfd *abfd);
- /* 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]
- avx_bytes[576..831]
- mpx_bytes [960..1032]
- avx512_k_regs[1088..1152]
- avx512_zmmh_regs0-7[1153..1407]
- avx512_zmmh_regs8-15[1408..1663]
- avx512_zmm_regs16-31[1664..2687]
- pkru[2688..2752]
- future_state 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 */
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