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AArch64: Add MTE CPU feature check support

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This patch is a preparation for the next patches implementing MTE. It just adds
a HWCAP2 constant for MTE, creates a new generic arch/aarch64-mte-linux.h file
and includes that file in the source files that will use it.

gdb/ChangeLog:

2021-03-24  Luis Machado  <luis.machado@linaro.org>

	* Makefile.in (HFILES_NO_SRCDIR): Add arch/aarch64-mte-linux.h.
	* aarch64-linux-nat.c: Include arch/aarch64-mte-linux.h.
	* aarch64-linux-tdep.c: Likewise
	* arch/aarch64-mte-linux.h: New file.

gdbserver/ChangeLog:

2021-03-24  Luis Machado  <luis.machado@linaro.org>

	* linux-aarch64-low.cc: Include arch/aarch64-mte-linux.h.
This commit is contained in:
Luis Machado 2020-06-15 13:39:30 -03:00
parent 0f01515a24
commit 0424512519
7 changed files with 45 additions and 0 deletions
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7
gdb/ChangeLog
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@ -1,3 +1,10 @@
2021-03-24 Luis Machado <luis.machado@linaro.org>
* Makefile.in (HFILES_NO_SRCDIR): Add arch/aarch64-mte-linux.h.
* aarch64-linux-nat.c: Include arch/aarch64-mte-linux.h.
* aarch64-linux-tdep.c: Likewise
* arch/aarch64-mte-linux.h: New file.
2021-03-24 Luis Machado <luis.machado@linaro.org>
* remote: Include gdbsupport/selftest.h.

1
gdb/Makefile.in
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@ -1474,6 +1474,7 @@ HFILES_NO_SRCDIR = \
arch/aarch32.h \
arch/aarch64.h \
arch/aarch64-insn.h \
arch/aarch64-mte-linux.h \
arch/arc.h \
arch/arm.h \
arch/i386.h \

2
gdb/aarch64-linux-nat.c
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@ -50,6 +50,8 @@
#include "gdb_proc_service.h"
#include "arch-utils.h"
#include "arch/aarch64-mte-linux.h"
#ifndef TRAP_HWBKPT
#define TRAP_HWBKPT 0x0004
#endif

2
gdb/aarch64-linux-tdep.c
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@ -45,6 +45,8 @@
#include "record-full.h"
#include "linux-record.h"
#include "arch/aarch64-mte-linux.h"
/* Signal frame handling.
+------------+ ^

28
gdb/arch/aarch64-mte-linux.h Normal file
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@ -0,0 +1,28 @@
/* Common Linux target-dependent definitions for AArch64 MTE
Copyright (C) 2021 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
/* Feature check for Memory Tagging Extension. */
#ifndef HWCAP2_MTE
#define HWCAP2_MTE (1 << 18)
#endif
#endif /* ARCH_AARCH64_LINUX_H */

4
gdbserver/ChangeLog
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@ -1,3 +1,7 @@
2021-03-24 Luis Machado <luis.machado@linaro.org>
* linux-aarch64-low.cc: Include arch/aarch64-mte-linux.h.
2021-03-24 Luis Machado <luis.machado@linaro.org>
* server.cc (test_memory_tagging_functions): New function.

1
gdbserver/linux-aarch64-low.cc
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@ -40,6 +40,7 @@
#include "gdb_proc_service.h"
#include "arch/aarch64.h"
#include "arch/aarch64-mte-linux.h"
#include "linux-aarch32-tdesc.h"
#include "linux-aarch64-tdesc.h"
#include "nat/aarch64-sve-linux-ptrace.h"