Fix for remote G Packet message too long error for baremetal.

Prior to version MicroBlaze v8.10.a,EDK 13.1, XMD's gdbserver stub returned 57
registers in response to GDB's G request. Starting with version MicroBlaze
v8.10.a, EDK 13.1, XMD added the slr and shr register, for a count of 59
registers. This patch adds these registers to the expected G response. This patch
fixes the above problem for baremetal and also supports the backward compatibility.

ChangeLog:
2014-07-02  Ajit Agarwal  <ajitkum@xilinx.com>

	* microblaze-tdep.c (microblaze_register_names): Add
	the rshr and rslr register names.
	(microblaze_gdbarch_init): Use of tdesc_has_registers.
	Use of tdesc_find_feature. Use of tdesc_data_alloc.
	Use of tdesc_numbered_register. Use of
	microblaze_register_g_packet_guesses. Use of
	tdesc_use_registers. Use of set_gdbarch_register_type.
	(microblaze_register_g_packet_guesses): New.
	* microblaze-tdep.h (microblaze_reg_num): Add
	field MICROBLAZE_SLR_REGNUM MICROBLAZE_SHR_REGNUM
	MICROBLAZE_NUM_REGS and MICROBLAZE_NUM_CORE_REGS.
	(microblaze_frame_cache): Use of MICROBLAZE_NUM_REGS.
	* features/microblaze-core.xml: New file.
	* features/microblaze-stack-protect.xml: New file.
	* features/microblaze-with-stack-protect.c: New file.
	* features/microblaze-with-stack-protect.xml: New file.
	* features/microblaze.xml: New file.
	* features/microblaze.c: New file.
	* features/Makefile (microblaze-with-stack-protect): Add
	microblaze-with-stack-protect microblaze and
	microblaze-expedite.
	* regformats/microblaze-with-stack-protect.dat: New file.
	* regformats/microblaze.dat: New file.
	* doc/gdb.texinfo (MicroBlaze Features): New.

Signed-off-by:Ajit Agarwal ajitkum@xilinx.com

1 files changed, 26 insertions, 24 deletions

diff --git a/gdb/microblaze-tdep.h b/gdb/microblaze-tdep.h
index a532092..ba240e9 100644
--- a/gdb/microblaze-tdep.h
+++ b/gdb/microblaze-tdep.h
@@ -26,30 +26,8 @@ struct gdbarch_tdep
 {
 };
 
-struct microblaze_frame_cache
-{
-  /* Base address.  */
-  CORE_ADDR base;
-  CORE_ADDR pc;
-
-  /* Do we have a frame?  */
-  int frameless_p;
-
-  /* Frame size.  */
-  int framesize;
-
-  /* Frame register.  */
-  int fp_regnum;
-
-  /* Offsets to saved registers.  */
-  int register_offsets[57];	/* Must match MICROBLAZE_NUM_REGS.  */
-
-  /* Table of saved registers.  */
-  struct trad_frame_saved_reg *saved_regs;
-};
-
 /* Register numbers.  */
-enum microblaze_regnum 
+enum microblaze_regnum
 {
   MICROBLAZE_R0_REGNUM,
   MICROBLAZE_R1_REGNUM, MICROBLAZE_SP_REGNUM = MICROBLAZE_R1_REGNUM,
@@ -107,9 +85,33 @@ enum microblaze_regnum
   MICROBLAZE_RTLBX_REGNUM,
   MICROBLAZE_RTLBSX_REGNUM,
   MICROBLAZE_RTLBLO_REGNUM,
-  MICROBLAZE_RTLBHI_REGNUM
+  MICROBLAZE_RTLBHI_REGNUM,
+  MICROBLAZE_SLR_REGNUM, MICROBLAZE_NUM_CORE_REGS = MICROBLAZE_SLR_REGNUM,
+  MICROBLAZE_SHR_REGNUM,
+  MICROBLAZE_NUM_REGS
 };
 
+struct microblaze_frame_cache
+{
+  /* Base address.  */
+  CORE_ADDR base;
+  CORE_ADDR pc;
+
+  /* Do we have a frame?  */
+  int frameless_p;
+
+  /* Frame size.  */
+  int framesize;
+
+  /* Frame register.  */
+  int fp_regnum;
+
+  /* Offsets to saved registers.  */
+  int register_offsets[MICROBLAZE_NUM_REGS];
+
+  /* Table of saved registers.  */
+  struct trad_frame_saved_reg *saved_regs;
+};
 /* All registers are 32 bits.  */
 #define MICROBLAZE_REGISTER_SIZE 4