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/* Common AArch64 definitions for MTE
Copyright (C) 2021-2024 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 GDB_ARCH_AARCH64_MTE_H
#define GDB_ARCH_AARCH64_MTE_H
/* We have one tag per 16 bytes of memory. */
#define AARCH64_MTE_GRANULE_SIZE 16
#define AARCH64_MTE_TAG_BIT_SIZE 4
#define AARCH64_MTE_LOGICAL_TAG_START_BIT 56
#define AARCH64_MTE_LOGICAL_MAX_VALUE 0xf
/* Return the number of tag granules in the memory range
[ADDR, ADDR + LEN) given GRANULE_SIZE. */
extern size_t aarch64_mte_get_tag_granules (CORE_ADDR addr, size_t len,
size_t granule_size);
/* Return the 4-bit tag made from VALUE. */
extern CORE_ADDR aarch64_mte_make_ltag_bits (CORE_ADDR value);
/* Return the 4-bit tag that can be OR-ed to an address. */
extern CORE_ADDR aarch64_mte_make_ltag (CORE_ADDR value);
/* Helper to set the logical TAG for a 64-bit ADDRESS.
It is always possible to set the logical tag. */
extern CORE_ADDR aarch64_mte_set_ltag (CORE_ADDR address, CORE_ADDR tag);
/* Helper to get the logical tag from a 64-bit ADDRESS.
It is always possible to get the logical tag. */
extern CORE_ADDR aarch64_mte_get_ltag (CORE_ADDR address);
#endif /* GDB_ARCH_AARCH64_MTE_H */
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