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authorLuis Machado <luis.machado@linaro.org>2020-06-15 13:39:30 -0300
committerLuis Machado <luis.machado@linaro.org>2020-06-25 13:23:38 -0300
commit04af1924d97910a274be9d569f98b1f4a714ea8f (patch)
tree7afcde7ecdbce2a0d4dcfd8d794dccc72cc968ef
parentd0c98d56c30d9a88fcccd785ffdd21ed4f62de3a (diff)
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AArch64: Add MTE CPU feature check support
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: YYYY-MM-DD 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: YYYY-MM-DD Luis Machado <luis.machado@linaro.org> * linux-aarch64-low.cc: Include arch/aarch64-mte-linux.h.
-rw-r--r--gdb/Makefile.in1
-rw-r--r--gdb/aarch64-linux-nat.c2
-rw-r--r--gdb/aarch64-linux-tdep.c2
-rw-r--r--gdb/arch/aarch64-mte-linux.h28
-rw-r--r--gdbserver/linux-aarch64-low.cc1
5 files changed, 34 insertions, 0 deletions
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 32d0eee..ae789bb 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -1444,6 +1444,7 @@ 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 \
diff --git a/gdb/aarch64-linux-nat.c b/gdb/aarch64-linux-nat.c
index 77d5863..260f475 100644
--- a/gdb/aarch64-linux-nat.c
+++ b/gdb/aarch64-linux-nat.c
@@ -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
diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index 34ba0d8..bfb4fc5 100644
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -44,6 +44,8 @@
#include "record-full.h"
#include "linux-record.h"
+#include "arch/aarch64-mte-linux.h"
+
/* Signal frame handling.
+------------+ ^
diff --git a/gdb/arch/aarch64-mte-linux.h b/gdb/arch/aarch64-mte-linux.h
new file mode 100644
index 0000000..c6a91c2
--- /dev/null
+++ b/gdb/arch/aarch64-mte-linux.h
@@ -0,0 +1,28 @@
+/* Common Linux target-dependent definitions for AArch64 MTE
+
+ Copyright (C) 2020 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 */
diff --git a/gdbserver/linux-aarch64-low.cc b/gdbserver/linux-aarch64-low.cc
index 08208ae..7512aac 100644
--- a/gdbserver/linux-aarch64-low.cc
+++ b/gdbserver/linux-aarch64-low.cc
@@ -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"