Change tic6x target descriptions

This patch changes tic6x target descriptions to be more flexible.  Rebuild
tic6x-uclinux GDBserver with my x86 g++, and the unit test passes.

gdb:

2017-11-24  Yao Qi  <yao.qi@linaro.org>

	* arch/tic6x.c: New file.
	* arch/tic6x.h: New file.
	* features/Makefile (FEATURE_XMLFILES): Add tic6x-c6xp.xml,
	tic6x-core.xml and tic6x-gp.xml.
	* features/tic6x-c6xp.c: Generated.
	* features/tic6x-core.c: Generated.
	* features/tic6x-gp.c: Generated.
	* target-descriptions.c (maint_print_c_tdesc_cmd): Match
	"tic6x-".

gdb/gdbserver:

2017-11-24  Yao Qi  <yao.qi@linaro.org>

	* configure.srv: Set $srv_regobj for tic6x-linux.
	* linux-tic6x-low.c: Include "arch/tic6x.h" and "tdesc.h".
	(tic6x_read_description): Move some code to tic6x_arch_setup.
	(tic6x_tdesc_test): New function.
	(initialize_low_arch): Call selftests::register_test.

4 files changed, 112 insertions, 1 deletions

diff --git a/gdb/features/Makefile b/gdb/features/Makefile
index b41d561..78a44ca 100644
--- a/gdb/features/Makefile
+++ b/gdb/features/Makefile
@@ -221,7 +221,10 @@ FEATURE_XMLFILES = i386/32bit-core.xml \
 	i386/64bit-linux.xml \
 	i386/64bit-pkeys.xml \
 	i386/64bit-sse.xml \
-	i386/x32-core.xml
+	i386/x32-core.xml \
+	tic6x-c6xp.xml \
+	tic6x-core.xml \
+	tic6x-gp.xml
 
 FEATURE_CFILES = $(patsubst %.xml,%.c,$(FEATURE_XMLFILES))
 
diff --git a/gdb/features/tic6x-c6xp.c b/gdb/features/tic6x-c6xp.c
new file mode 100644
index 0000000..5b0f566
--- /dev/null
+++ b/gdb/features/tic6x-c6xp.c
@@ -0,0 +1,16 @@
+/* THIS FILE IS GENERATED.  -*- buffer-read-only: t -*- vi:set ro:
+  Original: tic6x-c6xp.xml */
+
+#include "arch/tdesc.h"
+
+static int
+create_feature_tic6x_c6xp (struct target_desc *result, long regnum)
+{
+  struct tdesc_feature *feature;
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.tic6x.c6xp", "tic6x-c6xp.xml");
+  tdesc_create_reg (feature, "TSR", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "ILC", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "RILC", regnum++, 1, NULL, 32, "uint32");
+  return regnum;
+}
diff --git a/gdb/features/tic6x-core.c b/gdb/features/tic6x-core.c
new file mode 100644
index 0000000..823d4c1
--- /dev/null
+++ b/gdb/features/tic6x-core.c
@@ -0,0 +1,47 @@
+/* THIS FILE IS GENERATED.  -*- buffer-read-only: t -*- vi:set ro:
+  Original: tic6x-core.xml */
+
+#include "arch/tdesc.h"
+
+static int
+create_feature_tic6x_core (struct target_desc *result, long regnum)
+{
+  struct tdesc_feature *feature;
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.tic6x.core", "tic6x-core.xml");
+  tdesc_create_reg (feature, "A0", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A1", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A2", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A3", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A4", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A5", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A6", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A7", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A8", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A9", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A10", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A11", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A12", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A13", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A14", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A15", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B0", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B1", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B2", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B3", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B4", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B5", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B6", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B7", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B8", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B9", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B10", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B11", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B12", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B13", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B14", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B15", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "CSR", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "PC", regnum++, 1, NULL, 32, "code_ptr");
+  return regnum;
+}
diff --git a/gdb/features/tic6x-gp.c b/gdb/features/tic6x-gp.c
new file mode 100644
index 0000000..df0d0e3
--- /dev/null
+++ b/gdb/features/tic6x-gp.c
@@ -0,0 +1,45 @@
+/* THIS FILE IS GENERATED.  -*- buffer-read-only: t -*- vi:set ro:
+  Original: tic6x-gp.xml */
+
+#include "arch/tdesc.h"
+
+static int
+create_feature_tic6x_gp (struct target_desc *result, long regnum)
+{
+  struct tdesc_feature *feature;
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.tic6x.gp", "tic6x-gp.xml");
+  tdesc_create_reg (feature, "A16", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A17", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A18", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A19", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A20", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A21", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A22", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A23", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A24", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A25", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A26", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A27", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A28", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A29", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A30", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "A31", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B16", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B17", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B18", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B19", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B20", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B21", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B22", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B23", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B24", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B25", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B26", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B27", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B28", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B29", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B30", regnum++, 1, NULL, 32, "uint32");
+  tdesc_create_reg (feature, "B31", regnum++, 1, NULL, 32, "uint32");
+  return regnum;
+}