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

   1 /* Common native Linux definitions for AArch64 MTE.
   2
   3    Copyright (C) 2021-2022 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_MTE_LINUX_PTRACE_H
  21 #define NAT_AARCH64_MTE_LINUX_PTRACE_H
  22
  23 /* MTE allocation tag access */
  24
  25 #ifndef PTRACE_PEEKMTETAGS
  26 #define PTRACE_PEEKMTETAGS        33
  27 #endif
  28
  29 #ifndef PTRACE_POKEMTETAGS
  30 #define PTRACE_POKEMTETAGS        34
  31 #endif
  32
  33 /* Maximum number of tags to pass at once to the kernel.  */
  34 #define AARCH64_MTE_TAGS_MAX_SIZE 4096
  35
  36 /* Read the allocation tags from memory range [ADDRESS, ADDRESS + LEN)
  37    into TAGS.
  38
  39    Returns true if successful and false otherwise.  */
  40 extern bool aarch64_mte_fetch_memtags (int tid, CORE_ADDR address, size_t len,
  41                                        gdb::byte_vector &tags);
  42
  43 /* Write the allocation tags contained in TAGS into the memory range
  44    [ADDRESS, ADDRESS + LEN).
  45
  46    Returns true if successful and false otherwise.  */
  47 extern bool aarch64_mte_store_memtags (int tid, CORE_ADDR address, size_t len,
  48                                        const gdb::byte_vector &tags);
  49
  50 #endif /* NAT_AARCH64_MTE_LINUX_PTRACE_H */