gdb: new AndesTech NDS32 port

gdb/ChangeLog:

	* Makefile.in (ALL_TARGET_OBS): Add nds32-tdep.o.
	(HFILES_NO_SRCDIR): Add nds32-tdep.h.
	(ALLDEPFILES): Add nds32-tdep.c.
	* NEWS: Mention new NDS32 port.
	* configure.tgt: Add NDS32.
	* nds32-tdep.c: New file.
	* nds32-tdep.h: New file.
	* features/Makefile (XMLTOC): Add nds32.xml.
	* features/nds32-core.xml: New file.
	* features/nds32-fpu.xml: New file.
	* features/nds32-system.xml: New file.
	* features/nds32.c: New file (generated).
	* features/nds32.xml: New file.

gdb/doc/ChangeLog:

	* gdb.texinfo (Standard Target Features): Document NDS32 features.
	(NDS32 Features): New Section.

gdb/testsuite/ChangeLog:

	* gdb.base/float.exp: Add target check for nds32*-*-*.
	* gdb.xml/tdesc-regs.exp: Set core-regs for nds32*-*-*.

gdb/ChangeLog

@@ -1,3 +1,19 @@
+2016-06-17  Yan-Ting Lin  <[email protected]>
+
+	* Makefile.in (ALL_TARGET_OBS): Add nds32-tdep.o.
+	(HFILES_NO_SRCDIR): Add nds32-tdep.h.
+	(ALLDEPFILES): Add nds32-tdep.c.
+	* NEWS: Mention new NDS32 port.
+	* configure.tgt: Add NDS32.
+	* nds32-tdep.c: New file.
+	* nds32-tdep.h: New file.
+	* features/Makefile (XMLTOC): Add nds32.xml.
+	* features/nds32-core.xml: New file.
+	* features/nds32-fpu.xml: New file.
+	* features/nds32-system.xml: New file.
+	* features/nds32.c: New file (generated).
+	* features/nds32.xml: New file.
+
 2016-06-14  John Baldwin  <[email protected]>
 
 	* v850-tdep.c (v850_use_struct_convention): Trim type length checks.

gdb/Makefile.in

@@ -691,6 +691,7 @@ ALL_TARGET_OBS = \
 	moxie-tdep.o \
 	msp430-tdep.o \
 	mt-tdep.o \
+	nds32-tdep.o \
 	nios2-tdep.o nios2-linux-tdep.o \
 	nto-tdep.o \
 	ppc-linux-tdep.o ppcfbsd-tdep.o ppcnbsd-tdep.o ppcobsd-tdep.o  \
@@ -967,7 +968,7 @@ amd64-darwin-tdep.h charset-list.h \
 config/djgpp/langinfo.h config/djgpp/nl_types.h darwin-nat.h \
 dicos-tdep.h filesystem.h gcore.h gdb_wchar.h hppabsd-tdep.h \
 i386-darwin-tdep.h x86-nat.h linux-record.h moxie-tdep.h nios2-tdep.h \
-ft32-tdep.h \
+ft32-tdep.h nds32-tdep.h \
 osdata.h procfs.h python/py-event.h python/py-events.h python/py-stopevent.h \
 python/python-internal.h python/python.h ravenscar-thread.h record.h \
 record-full.h solib-aix.h \
@@ -1726,6 +1727,7 @@ ALLDEPFILES = \
 	mipsnbsd-nat.c mipsnbsd-tdep.c \
 	mips64obsd-nat.c mips64obsd-tdep.c \
 	msp430-tdep.c \
+	nds32-tdep.c \
 	nios2-tdep.c nios2-linux-tdep.c \
 	nbsd-nat.c nbsd-tdep.c obsd-nat.c obsd-tdep.c \
 	posix-hdep.c common/posix-strerror.c \

gdb/NEWS

@@ -86,6 +86,10 @@ maint selftest
 
     =record-started,thread-group="i1",method="btrace",format="bts"
 
+* New targets
+
+Andes NDS32			nds32*-*-elf
+
 *** Changes in GDB 7.11
 
 * GDB now supports debugging kernel-based threads on FreeBSD.

gdb/configure.tgt

@@ -394,6 +394,11 @@ mt-*-*)
 	gdb_target_obs="mt-tdep.o"
 	;;
 
+nds32*-*-elf)
+	# Target: AndesTech NDS32 core
+	gdb_target_obs="nds32-tdep.o"
+	;;
+
 nios2*-*-linux*)
 	# Target: Altera Nios II running Linux
 	gdb_target_obs="nios2-tdep.o nios2-linux-tdep.o solib-svr4.o \

gdb/doc/ChangeLog

@@ -1,3 +1,8 @@
+2016-06-17  Yan-Ting Lin  <[email protected]>
+
+	* gdb.texinfo (Standard Target Features): Document NDS32 features.
+	(NDS32 Features): New Section.
+
 2016-06-09  Toshihito Kikuchi  <[email protected]>
 
 	* gdb.texinfo (Examining Memory): Document negative repeat

gdb/doc/gdb.texinfo

@@ -40817,6 +40817,7 @@ registers using the capitalization used in the description.
 * MicroBlaze Features::
 * MIPS Features::
 * M68K Features::
+* NDS32 Features::
 * Nios II Features::
 * PowerPC Features::
 * S/390 and System z Features::
@@ -41025,6 +41026,28 @@ This feature is optional.  If present, it should contain registers
 @samp{fpiaddr}.
 @end table
 
+@node NDS32 Features
+@subsection NDS32 Features
+@cindex target descriptions, NDS32 features
+
+The @samp{org.gnu.gdb.nds32.core} feature is required for NDS32
+targets.  It should contain at least registers @samp{r0} through
+@samp{r10}, @samp{r15}, @samp{fp}, @samp{gp}, @samp{lp}, @samp{sp},
+and @samp{pc}.
+
+The @samp{org.gnu.gdb.nds32.fpu} feature is optional.  If present,
+it should contain 64-bit double-precision floating-point registers
+@samp{fd0} through @emph{fdN}, which should be @samp{fd3}, @samp{fd7},
+@samp{fd15}, or @samp{fd31} based on the FPU configuration implemented.
+
+@emph{Note:} The first sixteen 64-bit double-precision floating-point
+registers are overlapped with the thirty-two 32-bit single-precision
+floating-point registers.  The 32-bit single-precision registers, if
+not being listed explicitly, will be synthesized from halves of the
+overlapping 64-bit double-precision registers.  Listing 32-bit
+single-precision registers explicitly is deprecated, and the
+support to it could be totally removed some day.
+
 @node Nios II Features
 @subsection Nios II Features
 @cindex target descriptions, Nios II features

gdb/features/Makefile

@@ -189,6 +189,7 @@ XMLTOC = \
 	mips-linux.xml \
 	mips64-dsp-linux.xml \
 	mips64-linux.xml \
+	nds32.xml \
 	nios2-linux.xml \
 	nios2.xml \
 	rs6000/powerpc-32.xml \

gdb/features/nds32-core.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2013-2016 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.nds32.core">
+  <reg name="r0" bitsize="32" regnum="0"/>
+  <reg name="r1" bitsize="32"/>
+  <reg name="r2" bitsize="32"/>
+  <reg name="r3" bitsize="32"/>
+  <reg name="r4" bitsize="32"/>
+  <reg name="r5" bitsize="32"/>
+  <reg name="r6" bitsize="32"/>
+  <reg name="r7" bitsize="32"/>
+  <reg name="r8" bitsize="32"/>
+  <reg name="r9" bitsize="32"/>
+  <reg name="r10" bitsize="32"/>
+  <reg name="r11" bitsize="32"/>
+  <reg name="r12" bitsize="32"/>
+  <reg name="r13" bitsize="32"/>
+  <reg name="r14" bitsize="32"/>
+  <reg name="r15" bitsize="32"/>
+  <reg name="r16" bitsize="32"/>
+  <reg name="r17" bitsize="32"/>
+  <reg name="r18" bitsize="32"/>
+  <reg name="r19" bitsize="32"/>
+  <reg name="r20" bitsize="32"/>
+  <reg name="r21" bitsize="32"/>
+  <reg name="r22" bitsize="32"/>
+  <reg name="r23" bitsize="32"/>
+  <reg name="r24" bitsize="32"/>
+  <reg name="r25" bitsize="32"/>
+  <reg name="r26" bitsize="32"/>
+  <reg name="r27" bitsize="32"/>
+  <reg name="fp" bitsize="32" type="data_ptr"/>
+  <reg name="gp" bitsize="32" type="data_ptr"/>
+  <reg name="lp" bitsize="32" type="code_ptr"/>
+  <reg name="sp" bitsize="32" type="data_ptr"/>
+
+  <reg name="pc" bitsize="32" type="code_ptr"/>
+</feature>

gdb/features/nds32-fpu.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2013-2016 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.nds32.fpu">
+  <reg name="fd0" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd1" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd2" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd3" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd4" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd5" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd6" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd7" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd8" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd9" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd10" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd11" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd12" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd13" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd14" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd15" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd16" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd17" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd18" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd19" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd20" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd21" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd22" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd23" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd24" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd25" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd26" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd27" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd28" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd29" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd30" bitsize="64" type="ieee_double" group="float"/>
+  <reg name="fd31" bitsize="64" type="ieee_double" group="float"/>
+</feature>

gdb/features/nds32-system.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2013-2016 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.nds32.system">
+  <reg name="ir0" bitsize="32"/>
+
+  <reg name="itb" bitsize="32"/>
+  <reg name="ifc_lp" bitsize="32"/>
+</feature>

gdb/features/nds32.c

@@ -0,0 +1,92 @@
+/* THIS FILE IS GENERATED.  -*- buffer-read-only: t -*- vi:set ro:
+  Original: nds32.xml */
+
+#include "defs.h"
+#include "osabi.h"
+#include "target-descriptions.h"
+
+struct target_desc *tdesc_nds32;
+static void
+initialize_tdesc_nds32 (void)
+{
+  struct target_desc *result = allocate_target_description ();
+  struct tdesc_feature *feature;
+
+  set_tdesc_architecture (result, bfd_scan_arch ("n1h"));
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.nds32.core");
+  tdesc_create_reg (feature, "r0", 0, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r1", 1, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r2", 2, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r3", 3, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r4", 4, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r5", 5, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r6", 6, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r7", 7, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r8", 8, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r9", 9, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r10", 10, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r11", 11, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r12", 12, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r13", 13, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r14", 14, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r15", 15, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r16", 16, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r17", 17, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r18", 18, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r19", 19, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r20", 20, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r21", 21, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r22", 22, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r23", 23, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r24", 24, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r25", 25, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r26", 26, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r27", 27, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "fp", 28, 1, NULL, 32, "data_ptr");
+  tdesc_create_reg (feature, "gp", 29, 1, NULL, 32, "data_ptr");
+  tdesc_create_reg (feature, "lp", 30, 1, NULL, 32, "code_ptr");
+  tdesc_create_reg (feature, "sp", 31, 1, NULL, 32, "data_ptr");
+  tdesc_create_reg (feature, "pc", 32, 1, NULL, 32, "code_ptr");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.nds32.fpu");
+  tdesc_create_reg (feature, "fd0", 33, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd1", 34, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd2", 35, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd3", 36, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd4", 37, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd5", 38, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd6", 39, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd7", 40, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd8", 41, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd9", 42, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd10", 43, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd11", 44, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd12", 45, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd13", 46, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd14", 47, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd15", 48, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd16", 49, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd17", 50, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd18", 51, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd19", 52, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd20", 53, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd21", 54, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd22", 55, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd23", 56, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd24", 57, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd25", 58, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd26", 59, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd27", 60, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd28", 61, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd29", 62, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd30", 63, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "fd31", 64, 1, "float", 64, "ieee_double");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.nds32.system");
+  tdesc_create_reg (feature, "ir0", 65, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "itb", 66, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "ifc_lp", 67, 1, NULL, 32, "int");
+
+  tdesc_nds32 = result;
+}

gdb/features/nds32.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2013-2016 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 target SYSTEM "gdb-target.dtd">
+<target>
+  <architecture>nds32</architecture>
+  <xi:include href="nds32-core.xml"/>
+  <xi:include href="nds32-fpu.xml"/>
+  <xi:include href="nds32-system.xml"/>
+</target>