binutils-gdb/gdb/nat/aarch64-mte-linux-ptrace.h

/* Common native Linux definitions for AArch64 MTE.

   Copyright (C) 2021 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 NAT_AARCH64_MTE_LINUX_PTRACE_H
#define NAT_AARCH64_MTE_LINUX_PTRACE_H

/* MTE allocation tag access */

#ifndef PTRACE_PEEKMTETAGS
#define PTRACE_PEEKMTETAGS	  33
#endif

#ifndef PTRACE_POKEMTETAGS
#define PTRACE_POKEMTETAGS	  34
#endif

/* Maximum number of tags to pass at once to the kernel.  */
#define AARCH64_MTE_TAGS_MAX_SIZE 4096

/* Read the allocation tags from memory range [ADDRESS, ADDRESS + LEN)
   into TAGS.

   Returns true if successful and false otherwise.  */
extern bool aarch64_mte_fetch_memtags (int tid, CORE_ADDR address, size_t len,
				       gdb::byte_vector &tags);

/* Write the allocation tags contained in TAGS into the memory range
   [ADDRESS, ADDRESS + LEN).

   Returns true if successful and false otherwise.  */
extern bool aarch64_mte_store_memtags (int tid, CORE_ADDR address, size_t len,
				       const gdb::byte_vector &tags);

#endif /* NAT_AARCH64_MTE_LINUX_PTRACE_H */