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/* Common target dependent for AArch64 systems.
Copyright (C) 2018 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 AARCH64_SVE_LINUX_PTRACE_H
#define AARCH64_SVE_LINUX_PTRACE_H
/* Where indicated, this file contains defines and macros lifted directly from
the Linux kernel headers, with no modification.
Refer to Linux kernel documentation for details. */
#include <asm/sigcontext.h>
#include <sys/utsname.h>
#include <sys/ptrace.h>
#include <asm/ptrace.h>
/* Read VQ for the given tid using ptrace. If SVE is not supported then zero
is returned (on a system that supports SVE, then VQ cannot be zero). */
uint64_t aarch64_sve_get_vq (int tid);
/* Structures and defines taken from sigcontext.h. */
#ifndef SVE_SIG_ZREGS_SIZE
#define SVE_VQ_BYTES 16 /* number of bytes per quadword */
#define SVE_VQ_MIN 1
#define SVE_VQ_MAX 512
#define SVE_VL_MIN (SVE_VQ_MIN * SVE_VQ_BYTES)
#define SVE_VL_MAX (SVE_VQ_MAX * SVE_VQ_BYTES)
#define SVE_NUM_ZREGS 32
#define SVE_NUM_PREGS 16
#define sve_vl_valid(vl) \
((vl) % SVE_VQ_BYTES == 0 && (vl) >= SVE_VL_MIN && (vl) <= SVE_VL_MAX)
#endif /* SVE_SIG_ZREGS_SIZE. */
/* Structures and defines taken from ptrace.h. */
#ifndef SVE_PT_SVE_ZREG_SIZE
struct user_sve_header {
__u32 size; /* total meaningful regset content in bytes */
__u32 max_size; /* maxmium possible size for this thread */
__u16 vl; /* current vector length */
__u16 max_vl; /* maximum possible vector length */
__u16 flags;
__u16 __reserved;
};
#endif /* SVE_PT_SVE_ZREG_SIZE. */
#endif /* aarch64-sve-linux-ptrace.h */
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