daily update
        * ldlang.h (struct lang_input_statement_flags): Add pushed
        member.
        * ldlex.h (enum option_values): Add OPTION_PUSH_STATE and
        OPTION_POP_STATE.
        * lexsup.c (ld_options): Add entries for --push-state and
        --pop-state.
        (parse_args): Handle OPTION_PUSH_STATE and OPTION_POP_STATE.
        * ld.texinfo: Document --push-state and --pop-state.
Make test messages in gdb.mi/mi-var-display.exp unique

When I fix a bug in gdb.mi/mi-var-display.exp, I find its test
messages aren't unique, which makes some confusions for me.

$ cat testsuite/gdb.sum | grep "PASS" | sort | uniq -c | sort -n
...
 2 PASS: gdb.mi/mi-var-display.exp: set format variable bar
 2 PASS: gdb.mi/mi-var-display.exp: set format variable foo
 2 PASS: gdb.mi/mi-var-display.exp: set format variable weird.func_ptr
 2 PASS: gdb.mi/mi-var-display.exp: set format variable weird.func_ptr_ptr
 2 PASS: gdb.mi/mi-var-display.exp: show format variable foo
 3 PASS: gdb.mi/mi-var-display.exp: eval variable foo

This patch is to make test messages in mi-var-display.exp unique.

gdb/testsuite:

2014-08-09  Yao Qi  <yao@codesourcery.com>

	PR testsuite/13443
	* gdb.mi/mi-var-display.exp: Make test messages unique.
Remove duplicated code on checking address 0x0 is accessiable

I find some gdb.python tests fail on arm-none-eabi target, because the
tests assume that memory on address 0x is inaccessible.  Some tests
(in gdb.base) are aware of this, so do a "x 0" check first.  However,
the code is copy-n-paste.

This patch is to move the "x 0" check to a procedure in lib/gdb.exp,
and get needed tests call it.  The original code matches pattern
"0x0:\[ \t\]*Error accessing memory address 0x0\r\n$gdb_prompt $", but
I remove it from the new proc is_address_zero_readable, because GDB
doesn't emit such message any more.

gdb/testsuite:

2014-08-09  Yao Qi  <yao@codesourcery.com>

	* gdb.base/display.exp: Invoke is_address_zero_readable.
	* gdb.guile/scm-value.exp (test_value_in_inferior): Likewise.
	* gdb.python/py-value.exp (test_value_in_inferior): Likewise.
	* gdb.base/hbreak-unmapped.exp: Return if
	is_address_zero_readable returns true.
	* gdb.base/signest.exp: Likewise.
	* gdb.base/signull.exp: Likewise.
	* gdb.base/sigbpt.exp: Likewise.
	* gdb.guile/scm-disasm.exp: Do the test if
	is_address_zero_readable returns false.
	* gdb.guile/scm-pretty-print.exp (run_lang_tests): Likewise.
	* gdb.python/py-arch.exp: Likewise.
	* gdb.python/py-prettyprint.exp (run_lang_tests): Likewise.
	* lib/gdb.exp (is_address_zero_readable): New proc.
Fix PR remote/9053: remove dead code on query packet size

The code becomes dead as GDB evolves.  In 2003, Andrew Cagney post patch
https://sourceware.org/ml/gdb-patches/2003-10/msg00511.html to add target
read/write partial methods.  They support query buffer size when both
OFFSET and LEN is zero, and it was used in avr-tdep.c and kod.c.  Then,
Daniel added target_read_object_alloc and avr-tdep.c switches to use that
in patch https://sourceware.org/ml/gdb-patches/2006-07/msg00009.html
From then on, GDB on longer queries the buffer size, so the code
returning packet size in remote_xfer_partial became dead.

PR 17060 is duplicated of PR 9053, so I mention the latter in the
ChangeLog entry.  Rebuild GDB with this patch.  OK to apply?
I'll mark PR 17060 as duplicated once the patch is applied.

gdb:

2014-08-09  Yao Qi  <yao@codesourcery.com>

	PR remote/9053
	* remote.c (remote_xfer_partial): Remove dead code.
daily update
[Patch, microblaze]: Add wdc.ext.clear and wdc.ext.flush insns

Added two new instructions, wdc.ext.clear and wdc.ext.flush,
to enable MicroBlaze to flush an external cache, which is
used with the new coherency support for multiprocessing.

Signed-off-by:nagaraju <nmekala@xilix.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, microblaze]: Add mlittle-endian and mbig-endian flags

Added support in gas for mlittle-endian and mbig-endian flags
as options.

Updated show usage for MicroBlaze specific assembler options
to include new entries.

Signed-off-by:nagaraju <nmekala@xilix.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, microblaze]: Communicate in larger blocks with the target

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
[Patch, microblaze]: Add slr and shr regs and little-endian breakpoint

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[Patch, microblaze]: Add mb singlestepping.

Fix prologue analysis for little-endian.
Always provide a frame base.

Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
[Patch, microblaze]: Initial port of microblaze core reading support

Added support for reading notes in linux core dumps
Support for reading of PRSTATUS and PSINFO information for rebuilding
".reg" sections of core dumps at run time.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
[Patch, microblaze]: Add initial port of linux gdbserver

add gdb_proc_service_h to gdbserver microblaze-linux

gdbserver needs to initialise the microblaze registers

other archs use this step to run a *_arch_setup() to carry out all
architecture specific setup - may need to add in future

 * add linux-ptrace.o to gdbserver configure
 * gdb/configure.tgt: Set build_gdbserver=yes
 * Update breakpoint opcode
 * fix segfault on connecting gdbserver
 * add microblaze_linux_memory_remove_breakpoint
 * add set_solib_svr4_fetch_link_map_offsets
 * add set_gdbarch_fetch_tls_load_module_address
 * Force reading of r0 as 0, prevent stores

Signed-off-by: David Holsgrove <david.holsgrove@petalogix.com>
Signed-off-by: Nathan Rossi <nathan.rossi@petalogix.com>
[Patch, microblaze]: Added Backtrace support to GDB

Added backtrace support without debugging information.

Earlier backtrace used to work only when debug information is available.
Previous pc & sp values are calculated incorrectly due to which backtrace
was failing.

In this patch, previous frame sp & pc values are calculated correctly
in microblaze_frame_cache function and supplied them to
microblaze_frame_prev_register function

Signed-off-by:nagaraju <nmekala@xilix.com>
[Patch, microblaze]: Initial support for native gdb

microblaze: Follow PPC method of getting setting registers
using PTRACE PEEK/POKE

Signed-off-by: David Holsgrove <david.holsgrove@petalogix.com>
[Patch, gdb]: Robustify inline function support

Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
[Patch, gdb]: Fix debug message when register is unavailable

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
[LOCAL]: Disable the warning message for eh_frame_hdr

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
[LOCAL]: Fix relaxation of assembler resolved references
[LOCAL]: Fixup debug_loc sections after linker relaxation

Adds a new reloctype R_MICROBLAZE_32_NONE, used for passing
reloc info from the assembler to the linker when the linker
manages to fully resolve a local symbol reference.

This is a workaround for design flaws in the assembler to
linker interface with regards to linker relaxation.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>