* target-descriptions.c (tdesc_predefined_types): New.

	(tdesc_named_type): Use it.
	(tdesc_type_id, maint_print_c_tdesc_cmd): New functions.
	(_intialize_target_descriptions): Register "maint print c-tdesc".
	* features/Makefile (XMLTOC, CFILES, GDB): New macros.
	(cfiles, %.c): New rules.
	* features/arm-with-iwmmxt.c, features/mips-linux.c,
	features/mips64-linux.c: New generated files.

	* arm-linux-nat.c: Include preparsed description instead of
	"xml-support.h".
	(super_xfer_partial, arm_linux_xfer_partial): Remove.
	(arm_linux_read_description): New function.
	(_initialize_arm_linux_nat): Set to_read_description instead of
	to_xfer_partial.  Initialize preparsed description.
	* config/arm/linux.mh (TDEP_XML): Delete.
	* mips-linux-nat.c: Include preparsed descriptions instead of
	"xml-support.h".
	(super_xfer_partial, mips_linux_xfer_partial): Remove.
	(mips_linux_read_description): New function.
	(_initialize_mips_linux_nat): Set to_read_description instead of
	to_xfer_partial.  Initialize preparsed description.
	* config/mips/linux.mh (TDEP_XML): Delete.
	* Makefile.in (XMLFILES): Remove $(TDEP_XML).
	(features_headers, arm_with_iwmmxt_c, mips_linux_c)
	(mips64_linux_c): New macros.
	(arm-linux-nat.o, mips-linux-nat.o): Update.

	* gdb.texinfo (Maintenance Commands): Document "maint print c-tdesc".

4 files changed, 303 insertions, 0 deletions

diff --git a/gdb/features/Makefile b/gdb/features/Makefile
index e1162665198..b81c1b82bfb 100644
--- a/gdb/features/Makefile
+++ b/gdb/features/Makefile
@@ -25,6 +25,12 @@
 # affected XML files is changed, and the results should be kept in the
 # GDB repository.
 
+# It can also update the C files in the features directory from their
+# XML master copies.  This relies on a GDB linked with expat and
+# configured for the correct architecture, so the files are again kept
+# in the GDB repository.  To generate C files:
+#   make GDB=/path/to/gdb XMLTOC="xml files" cfiles
+
 WHICH = arm-with-iwmmxt mips-linux mips64-linux
 
 # Record which registers should be sent to GDB by default after stop.
@@ -36,6 +42,10 @@ XSLTPROC = xsltproc
 outdir = ../regformats
 OUTPUTS = $(patsubst %,$(outdir)/%.dat,$(WHICH))
 
+XMLTOC =
+CFILES = $(patsubst %.xml,%.c,$(XMLTOC))
+GDB = false
+
 all: $(OUTPUTS)
 
 $(outdir)/%.dat: %.xml number-regs.xsl sort-regs.xsl gdbserver-regs.xsl
@@ -47,5 +57,11 @@ $(outdir)/%.dat: %.xml number-regs.xsl sort-regs.xsl gdbserver-regs.xsl
 	  $(XSLTPROC) gdbserver-regs.xsl - >> $(outdir)/$*.tmp
 	sh ../../move-if-change $(outdir)/$*.tmp $(outdir)/$*.dat
 
+cfiles: $(CFILES)
+%.c: %.xml
+	$(GDB) -nx -q -batch \
+	  -ex "set tdesc filename $<" -ex 'maint print c-tdesc' > $@.tmp
+	sh ../../move-if-change $@.tmp $@
+
 # Other dependencies.
 $(outdir)/arm-with-iwmmxt.dat: arm-core.xml xscale-iwmmxt.xml
diff --git a/gdb/features/arm-with-iwmmxt.c b/gdb/features/arm-with-iwmmxt.c
new file mode 100644
index 00000000000..8255c7f06cc
--- /dev/null
+++ b/gdb/features/arm-with-iwmmxt.c
@@ -0,0 +1,89 @@
+/* THIS FILE IS GENERATED.  Original: arm-with-iwmmxt.xml */
+
+#include "defs.h"
+#include "gdbtypes.h"
+#include "target-descriptions.h"
+
+struct target_desc *tdesc_arm_with_iwmmxt;
+static void
+initialize_tdesc_arm_with_iwmmxt (void)
+{
+  struct target_desc *result = allocate_target_description ();
+  struct tdesc_feature *feature;
+  struct type *field_type, *type;
+
+  set_tdesc_architecture (result, bfd_scan_arch ("iwmmxt"));
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.arm.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, "sp", 13, 1, NULL, 32, "data_ptr");
+  tdesc_create_reg (feature, "lr", 14, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "pc", 15, 1, NULL, 32, "code_ptr");
+  tdesc_create_reg (feature, "cpsr", 25, 1, NULL, 32, "int");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.xscale.iwmmxt");
+  field_type = tdesc_named_type (feature, "uint8");
+  type = init_vector_type (field_type, 8);
+  TYPE_NAME (type) = xstrdup ("iwmmxt_v8u8");
+  tdesc_record_type (feature, type);
+
+  field_type = tdesc_named_type (feature, "uint16");
+  type = init_vector_type (field_type, 4);
+  TYPE_NAME (type) = xstrdup ("iwmmxt_v4u16");
+  tdesc_record_type (feature, type);
+
+  field_type = tdesc_named_type (feature, "uint32");
+  type = init_vector_type (field_type, 2);
+  TYPE_NAME (type) = xstrdup ("iwmmxt_v2u32");
+  tdesc_record_type (feature, type);
+
+  type = init_composite_type (NULL, TYPE_CODE_UNION);
+  TYPE_NAME (type) = xstrdup ("iwmmxt_vec64i");
+  field_type = tdesc_named_type (feature, "iwmmxt_v8u8");
+  append_composite_type_field (type, xstrdup ("u8"), field_type);
+  field_type = tdesc_named_type (feature, "iwmmxt_v4u16");
+  append_composite_type_field (type, xstrdup ("u16"), field_type);
+  field_type = tdesc_named_type (feature, "iwmmxt_v2u32");
+  append_composite_type_field (type, xstrdup ("u32"), field_type);
+  field_type = tdesc_named_type (feature, "uint64");
+  append_composite_type_field (type, xstrdup ("u64"), field_type);
+  TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR;
+  tdesc_record_type (feature, type);
+
+  tdesc_create_reg (feature, "wR0", 26, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR1", 27, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR2", 28, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR3", 29, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR4", 30, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR5", 31, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR6", 32, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR7", 33, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR8", 34, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR9", 35, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR10", 36, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR11", 37, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR12", 38, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR13", 39, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR14", 40, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wR15", 41, 1, NULL, 64, "iwmmxt_vec64i");
+  tdesc_create_reg (feature, "wCSSF", 42, 1, "vector", 32, "int");
+  tdesc_create_reg (feature, "wCASF", 43, 1, "vector", 32, "int");
+  tdesc_create_reg (feature, "wCGR0", 44, 1, "vector", 32, "int");
+  tdesc_create_reg (feature, "wCGR1", 45, 1, "vector", 32, "int");
+  tdesc_create_reg (feature, "wCGR2", 46, 1, "vector", 32, "int");
+  tdesc_create_reg (feature, "wCGR3", 47, 1, "vector", 32, "int");
+
+  tdesc_arm_with_iwmmxt = result;
+}
diff --git a/gdb/features/mips-linux.c b/gdb/features/mips-linux.c
new file mode 100644
index 00000000000..51785e46053
--- /dev/null
+++ b/gdb/features/mips-linux.c
@@ -0,0 +1,99 @@
+/* THIS FILE IS GENERATED.  Original: mips-linux.xml */
+
+#include "defs.h"
+#include "gdbtypes.h"
+#include "target-descriptions.h"
+
+struct target_desc *tdesc_mips_linux;
+static void
+initialize_tdesc_mips_linux (void)
+{
+  struct target_desc *result = allocate_target_description ();
+  struct tdesc_feature *feature;
+  struct type *field_type, *type;
+
+  set_tdesc_architecture (result, bfd_scan_arch ("mips"));
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.mips.cpu");
+  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, "r28", 28, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r29", 29, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r30", 30, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "r31", 31, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "lo", 33, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "hi", 34, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "pc", 37, 1, NULL, 32, "int");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.mips.cp0");
+  tdesc_create_reg (feature, "status", 32, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "badvaddr", 35, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "cause", 36, 1, NULL, 32, "int");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.mips.fpu");
+  tdesc_create_reg (feature, "f0", 37, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f1", 38, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f2", 39, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f3", 40, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f4", 41, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f5", 42, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f6", 43, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f7", 44, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f8", 45, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f9", 46, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f10", 47, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f11", 48, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f12", 49, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f13", 50, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f14", 51, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f15", 52, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f16", 53, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f17", 54, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f18", 55, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f19", 56, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f20", 57, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f21", 58, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f22", 59, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f23", 60, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f24", 61, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f25", 62, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f26", 63, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f27", 64, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f28", 65, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f29", 66, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f30", 67, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "f31", 68, 1, NULL, 32, "ieee_single");
+  tdesc_create_reg (feature, "fcsr", 69, 1, "float", 32, "int");
+  tdesc_create_reg (feature, "fir", 70, 1, "float", 32, "int");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.mips.linux");
+  tdesc_create_reg (feature, "restart", 71, 1, "system", 32, "int");
+
+  tdesc_mips_linux = result;
+}
diff --git a/gdb/features/mips64-linux.c b/gdb/features/mips64-linux.c
new file mode 100644
index 00000000000..85c99a6b600
--- /dev/null
+++ b/gdb/features/mips64-linux.c
@@ -0,0 +1,99 @@
+/* THIS FILE IS GENERATED.  Original: mips64-linux.xml */
+
+#include "defs.h"
+#include "gdbtypes.h"
+#include "target-descriptions.h"
+
+struct target_desc *tdesc_mips64_linux;
+static void
+initialize_tdesc_mips64_linux (void)
+{
+  struct target_desc *result = allocate_target_description ();
+  struct tdesc_feature *feature;
+  struct type *field_type, *type;
+
+  set_tdesc_architecture (result, bfd_scan_arch ("mips"));
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.mips.cpu");
+  tdesc_create_reg (feature, "r0", 0, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r1", 1, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r2", 2, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r3", 3, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r4", 4, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r5", 5, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r6", 6, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r7", 7, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r8", 8, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r9", 9, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r10", 10, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r11", 11, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r12", 12, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r13", 13, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r14", 14, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r15", 15, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r16", 16, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r17", 17, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r18", 18, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r19", 19, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r20", 20, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r21", 21, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r22", 22, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r23", 23, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r24", 24, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r25", 25, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r26", 26, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r27", 27, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r28", 28, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r29", 29, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r30", 30, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "r31", 31, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "lo", 33, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "hi", 34, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "pc", 37, 1, NULL, 64, "int");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.mips.cp0");
+  tdesc_create_reg (feature, "status", 32, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "badvaddr", 35, 1, NULL, 64, "int");
+  tdesc_create_reg (feature, "cause", 36, 1, NULL, 64, "int");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.mips.fpu");
+  tdesc_create_reg (feature, "f0", 37, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f1", 38, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f2", 39, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f3", 40, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f4", 41, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f5", 42, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f6", 43, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f7", 44, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f8", 45, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f9", 46, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f10", 47, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f11", 48, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f12", 49, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f13", 50, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f14", 51, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f15", 52, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f16", 53, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f17", 54, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f18", 55, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f19", 56, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f20", 57, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f21", 58, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f22", 59, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f23", 60, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f24", 61, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f25", 62, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f26", 63, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f27", 64, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f28", 65, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f29", 66, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f30", 67, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "f31", 68, 1, NULL, 64, "ieee_double");
+  tdesc_create_reg (feature, "fcsr", 69, 1, "float", 64, "int");
+  tdesc_create_reg (feature, "fir", 70, 1, "float", 64, "int");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.mips.linux");
+  tdesc_create_reg (feature, "restart", 71, 1, "system", 64, "int");
+
+  tdesc_mips64_linux = result;
+}