derek.holloway
7502bf64a4
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57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/* Common Linux target-dependent definitions for AArch64 MTE
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Copyright (C) 2021-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_ARCH_AARCH64_MTE_LINUX_H
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#define GDB_ARCH_AARCH64_MTE_LINUX_H
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/* Feature check for Memory Tagging Extension. */
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#ifndef HWCAP2_MTE
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#define HWCAP2_MTE (1 << 18)
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#endif
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/* The MTE regset consists of a single 64-bit register. */
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#define AARCH64_LINUX_SIZEOF_MTE 8
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/* Memory tagging definitions. */
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#ifndef SEGV_MTEAERR
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# define SEGV_MTEAERR 8
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# define SEGV_MTESERR 9
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#endif
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/* Memory tag types for AArch64. */
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enum class aarch64_memtag_type
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{
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/* MTE logical tag contained in pointers. */
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mte_logical = 0,
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/* MTE allocation tag stored in memory tag granules. */
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mte_allocation
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};
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/* Given a TAGS vector containing 1 MTE tag per byte, pack the data as
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2 tags per byte and resize the vector. */
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extern void aarch64_mte_pack_tags (gdb::byte_vector &tags);
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/* Given a TAGS vector containing 2 MTE tags per byte, unpack the data as
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1 tag per byte and resize the vector. If SKIP_FIRST is TRUE, skip the
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first unpacked element. Otherwise leave it in the unpacked vector. */
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extern void aarch64_mte_unpack_tags (gdb::byte_vector &tags, bool skip_first);
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#endif /* GDB_ARCH_AARCH64_MTE_LINUX_H */
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