1/* Common target dependent for AArch64 systems.
2
3   Copyright (C) 2018-2020 Free Software Foundation, Inc.
4
5   This file is part of GDB.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
19
20#ifndef NAT_AARCH64_SVE_LINUX_PTRACE_H
21#define NAT_AARCH64_SVE_LINUX_PTRACE_H
22
23#include <signal.h>
24#include <sys/utsname.h>
25#include <sys/ptrace.h>
26#include <asm/ptrace.h>
27
28#ifndef SVE_SIG_ZREGS_SIZE
29#include "aarch64-sve-linux-sigcontext.h"
30#endif
31
32/* Indicates whether a SVE ptrace header is followed by SVE registers or a
33   fpsimd structure.  */
34
35#define HAS_SVE_STATE(header) ((header).flags & SVE_PT_REGS_SVE)
36
37/* Read VQ for the given tid using ptrace.  If SVE is not supported then zero
38   is returned (on a system that supports SVE, then VQ cannot be zero).  */
39
40uint64_t aarch64_sve_get_vq (int tid);
41
42/* Set VQ in the kernel for the given tid, using either the value VQ or
43   reading from the register VG in the register buffer.  */
44
45bool aarch64_sve_set_vq (int tid, uint64_t vq);
46bool aarch64_sve_set_vq (int tid, struct reg_buffer_common *reg_buf);
47
48/* Read the current SVE register set using ptrace, allocating space as
49   required.  */
50
51extern std::unique_ptr<gdb_byte[]> aarch64_sve_get_sveregs (int tid);
52
53/* Put the registers from linux structure buf into register buffer.  Assumes the
54   vector lengths in the register buffer match the size in the kernel.  */
55
56extern void aarch64_sve_regs_copy_to_reg_buf (struct reg_buffer_common *reg_buf,
57					      const void *buf);
58
59/* Put the registers from register buffer into linux structure buf.  Assumes the
60   vector lengths in the register buffer match the size in the kernel.  */
61
62extern void
63aarch64_sve_regs_copy_from_reg_buf (const struct reg_buffer_common *reg_buf,
64				    void *buf);
65
66#endif /* NAT_AARCH64_SVE_LINUX_PTRACE_H */
67