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[binutils-gdb] [ARM/AArch64] Fix -Werror=unused-const-variable warnings in GDBserver
- From: Yao Qi <qiyao at sourceware dot org>
- To: gdb-cvs at sourceware dot org
- Date: 6 Jan 2016 15:02:20 -0000
- Subject: [binutils-gdb] [ARM/AArch64] Fix -Werror=unused-const-variable warnings in GDBserver
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=b2ca446f682854c2b187178358b97174bf313fa7
commit b2ca446f682854c2b187178358b97174bf313fa7
Author: Yao Qi <yao.qi@linaro.org>
Date: Wed Jan 6 12:11:41 2016 +0000
[ARM/AArch64] Fix -Werror=unused-const-variable warnings in GDBserver
This patch fixes gcc warning when build ARM GDBserver and AArch64
GDBserver,
AArch64 GDBserver:
gdb/gdbserver/linux-aarch32-low.h:36:29: error: 'thumb2_breakpoint' defined but not used [-Werror=unused-const-variable]
static const unsigned short thumb2_breakpoint[] = { 0xf7f0, 0xa000 };
^
gdb/gdbserver/linux-aarch32-low.h:34:29: error: 'thumb_breakpoint' defined but not used [-Werror=unused-const-variable]
static const unsigned short thumb_breakpoint = 0xde01;
^
gdb/gdbserver/linux-aarch32-low.h:28:28: error: 'arm_breakpoint' defined but not used [-Werror=unused-const-variable]
static const unsigned long arm_breakpoint = arm_eabi_breakpoint;
^
cc1: all warnings being treated as errors
ARM GDBserver:
gdb/gdbserver/linux-aarch32-low.h:34:29: error: 'thumb_breakpoint' defined but not used [-Werror=unused-const-variable]
static const unsigned short thumb_breakpoint = 0xde01;
^~~~~~~~~~~~~~~~
gdb/gdbserver/linux-aarch32-low.h:28:28: error: 'arm_breakpoint' defined but not used [-Werror=unused-const-variable]
static const unsigned long arm_breakpoint = arm_eabi_breakpoint;
^~~~~~~~~~~~~~
by simply moving these macros and variables to
linux-aarch32-low.c and only declare thumb2_breakpoint in
linux-aarch32-low.h, which is not perfect, and reveals some issues
in recent arm GDBserver software single step changes. I'll post
follow-up patches.
gdb/gdbserver:
2016-01-06 Yao Qi <yao.qi@linaro.org>
* linux-aarch32-low.h (arm_abi_breakpoint): Move to
linux-aarch32-low.c.
(arm_eabi_breakpoint, arm_breakpoint): Likewise.
(arm_breakpoint_len, thumb_breakpoint_len): Likewise.
(thumb2_breakpoint, thumb2_breakpoint_len): Likewise.
(thumb2_breakpoint): Declare.
* linux-aarch32-low.c (arm_abi_breakpoint): Moved from
linux-aarch32-low.h.
(arm_eabi_breakpoint, arm_breakpoint): Likewise.
(arm_breakpoint_len, thumb_breakpoint_len): Likewise.
(thumb2_breakpoint, thumb2_breakpoint_len): Likewise.
Diff:
---
gdb/gdbserver/ChangeLog | 14 ++++++++++++++
gdb/gdbserver/linux-aarch32-low.c | 21 +++++++++++++++++++++
gdb/gdbserver/linux-aarch32-low.h | 21 +--------------------
3 files changed, 36 insertions(+), 20 deletions(-)
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 6f6eb1d..0c9e73e 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,17 @@
+2016-01-06 Yao Qi <yao.qi@linaro.org>
+
+ * linux-aarch32-low.h (arm_abi_breakpoint): Move to
+ linux-aarch32-low.c.
+ (arm_eabi_breakpoint, arm_breakpoint): Likewise.
+ (arm_breakpoint_len, thumb_breakpoint_len): Likewise.
+ (thumb2_breakpoint, thumb2_breakpoint_len): Likewise.
+ (thumb2_breakpoint): Declare.
+ * linux-aarch32-low.c (arm_abi_breakpoint): Moved from
+ linux-aarch32-low.h.
+ (arm_eabi_breakpoint, arm_breakpoint): Likewise.
+ (arm_breakpoint_len, thumb_breakpoint_len): Likewise.
+ (thumb2_breakpoint, thumb2_breakpoint_len): Likewise.
+
2016-01-01 Joel Brobecker <brobecker@adacore.com>
* gdbreplay.c (gdbreplay_version): Change copyright year in
diff --git a/gdb/gdbserver/linux-aarch32-low.c b/gdb/gdbserver/linux-aarch32-low.c
index 74deca3..ed66e08 100644
--- a/gdb/gdbserver/linux-aarch32-low.c
+++ b/gdb/gdbserver/linux-aarch32-low.c
@@ -27,6 +27,27 @@
#include <elf.h>
#endif
+/* Correct in either endianness. */
+#define arm_abi_breakpoint 0xef9f0001UL
+
+/* For new EABI binaries. We recognize it regardless of which ABI
+ is used for gdbserver, so single threaded debugging should work
+ OK, but for multi-threaded debugging we only insert the current
+ ABI's breakpoint instruction. For now at least. */
+#define arm_eabi_breakpoint 0xe7f001f0UL
+
+#if (defined __ARM_EABI__ || defined __aarch64__)
+static const unsigned long arm_breakpoint = arm_eabi_breakpoint;
+#else
+static const unsigned long arm_breakpoint = arm_abi_breakpoint;
+#endif
+
+#define arm_breakpoint_len 4
+static const unsigned short thumb_breakpoint = 0xde01;
+#define thumb_breakpoint_len 2
+const unsigned short thumb2_breakpoint[] = { 0xf7f0, 0xa000 };
+#define thumb2_breakpoint_len 4
+
/* Some older versions of GNU/Linux and Android do not define
the following macros. */
#ifndef NT_ARM_VFP
diff --git a/gdb/gdbserver/linux-aarch32-low.h b/gdb/gdbserver/linux-aarch32-low.h
index c8f6646..5c68454 100644
--- a/gdb/gdbserver/linux-aarch32-low.h
+++ b/gdb/gdbserver/linux-aarch32-low.h
@@ -15,26 +15,7 @@
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
-/* Correct in either endianness. */
-#define arm_abi_breakpoint 0xef9f0001UL
-
-/* For new EABI binaries. We recognize it regardless of which ABI
- is used for gdbserver, so single threaded debugging should work
- OK, but for multi-threaded debugging we only insert the current
- ABI's breakpoint instruction. For now at least. */
-#define arm_eabi_breakpoint 0xe7f001f0UL
-
-#if (defined __ARM_EABI__ || defined __aarch64__)
-static const unsigned long arm_breakpoint = arm_eabi_breakpoint;
-#else
-static const unsigned long arm_breakpoint = arm_abi_breakpoint;
-#endif
-
-#define arm_breakpoint_len 4
-static const unsigned short thumb_breakpoint = 0xde01;
-#define thumb_breakpoint_len 2
-static const unsigned short thumb2_breakpoint[] = { 0xf7f0, 0xa000 };
-#define thumb2_breakpoint_len 4
+extern const unsigned short thumb2_breakpoint[];
extern struct regs_info regs_info_aarch32;