projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 04245125 LM |
1 | /* Common Linux target-dependent definitions for AArch64 MTE |
| 2 | ||
| 88b9d363 | 3 | Copyright (C) 2021-2022 Free Software Foundation, Inc. |
| 04245125 LM |
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 ARCH_AARCH64_LINUX_H | |
| 21 | #define ARCH_AARCH64_LINUX_H | |
| 22 | ||
| 4601818e LM |
23 | #include "gdbsupport/common-defs.h" |
| 24 | ||
| 04245125 LM |
25 | /* Feature check for Memory Tagging Extension. */ |
| 26 | #ifndef HWCAP2_MTE | |
| 27 | #define HWCAP2_MTE (1 << 18) | |
| 28 | #endif | |
| 29 | ||
| 5e984dbf LM |
30 | /* The MTE regset consists of a single 64-bit register. */ |
| 31 | #define AARCH64_LINUX_SIZEOF_MTE 8 | |
| 32 | ||
| 4601818e LM |
33 | /* We have one tag per 16 bytes of memory. */ |
| 34 | #define AARCH64_MTE_GRANULE_SIZE 16 | |
| c7782e50 LM |
35 | #define AARCH64_MTE_LOGICAL_TAG_START_BIT 56 |
| 36 | #define AARCH64_MTE_LOGICAL_MAX_VALUE 0xf | |
| 4601818e | 37 | |
| cf44c9fa LM |
38 | /* Memory tagging definitions. */ |
| 39 | #ifndef SEGV_MTEAERR | |
| 40 | # define SEGV_MTEAERR 8 | |
| 41 | # define SEGV_MTESERR 9 | |
| 42 | #endif | |
| 43 | ||
| 4601818e LM |
44 | /* Memory tag types for AArch64. */ |
| 45 | enum class aarch64_memtag_type | |
| 46 | { | |
| 47 | /* MTE logical tag contained in pointers. */ | |
| 48 | mte_logical = 0, | |
| 49 | /* MTE allocation tag stored in memory tag granules. */ | |
| 50 | mte_allocation | |
| 51 | }; | |
| 52 | ||
| 53 | /* Return the number of tag granules in the memory range | |
| 54 | [ADDR, ADDR + LEN) given GRANULE_SIZE. */ | |
| 55 | extern size_t aarch64_mte_get_tag_granules (CORE_ADDR addr, size_t len, | |
| 56 | size_t granule_size); | |
| 57 | ||
| c7782e50 LM |
58 | /* Return the 4-bit tag made from VALUE. */ |
| 59 | extern CORE_ADDR aarch64_mte_make_ltag_bits (CORE_ADDR value); | |
| 60 | ||
| 61 | /* Return the 4-bit tag that can be OR-ed to an address. */ | |
| 62 | extern CORE_ADDR aarch64_mte_make_ltag (CORE_ADDR value); | |
| 63 | ||
| 64 | /* Helper to set the logical TAG for a 64-bit ADDRESS. | |
| 65 | ||
| 66 | It is always possible to set the logical tag. */ | |
| 67 | extern CORE_ADDR aarch64_mte_set_ltag (CORE_ADDR address, CORE_ADDR tag); | |
| 68 | ||
| 69 | /* Helper to get the logical tag from a 64-bit ADDRESS. | |
| 70 | ||
| 71 | It is always possible to get the logical tag. */ | |
| 72 | extern CORE_ADDR aarch64_mte_get_ltag (CORE_ADDR address); | |
| 73 | ||
| 04245125 | 74 | #endif /* ARCH_AARCH64_LINUX_H */ |