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gdbstub: Add support for MTE in user mode

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This commit implements the stubs to handle the qIsAddressTagged,
qMemTag, and QMemTag GDB packets, allowing all GDB 'memory-tag'
subcommands to work with QEMU gdbstub on aarch64 user mode. It also
implements the get/set functions for the special GDB MTE register
'tag_ctl', used to control the MTE fault type at runtime.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Message-Id: <20240628050850.536447-11-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240705084047.857176-40-alex.bennee@linaro.org>
This commit is contained in:
Gustavo Romero 2024-07-05 09:40:46 +01:00 • committed by Alex Bennée
parent 3b6c27d8f2
commit f81198cefa
6 changed files with 288 additions and 1 deletions
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11
gdb-xml/aarch64-mte.xml Normal file
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<?xml version="1.0"?>
<!-- Copyright (C) 2021-2023 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. -->
<!DOCTYPE feature SYSTEM "gdb-target.dtd">
<feature name="org.gnu.gdb.aarch64.mte">
<reg name="tag_ctl" bitsize="64" type="uint64" group="system" save-restore="no"/>
</feature>