1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374 |
- /* Common Linux target-dependent definitions for AArch64 MTE
- Copyright (C) 2021-2022 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 ARCH_AARCH64_LINUX_H
- #define ARCH_AARCH64_LINUX_H
- #include "gdbsupport/common-defs.h"
- /* Feature check for Memory Tagging Extension. */
- #ifndef HWCAP2_MTE
- #define HWCAP2_MTE (1 << 18)
- #endif
- /* The MTE regset consists of a single 64-bit register. */
- #define AARCH64_LINUX_SIZEOF_MTE 8
- /* We have one tag per 16 bytes of memory. */
- #define AARCH64_MTE_GRANULE_SIZE 16
- #define AARCH64_MTE_LOGICAL_TAG_START_BIT 56
- #define AARCH64_MTE_LOGICAL_MAX_VALUE 0xf
- /* Memory tagging definitions. */
- #ifndef SEGV_MTEAERR
- # define SEGV_MTEAERR 8
- # define SEGV_MTESERR 9
- #endif
- /* Memory tag types for AArch64. */
- enum class aarch64_memtag_type
- {
- /* MTE logical tag contained in pointers. */
- mte_logical = 0,
- /* MTE allocation tag stored in memory tag granules. */
- mte_allocation
- };
- /* 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 /* ARCH_AARCH64_LINUX_H */
|