This adds the missing ChangeLog entries for the "Python bindings" patch series.

	sim/
	* MAINTAINTERS (aarch64): Add myself.

	sim/aarch64/
	* simulator.c (do_vec_MLA): Rewrite switch body.

	sim/testsuite/sim/aarch64/
	* mla.s: New.

	sim/aarch64/
	* simulator.c (do_vec_bit): Change loop limits from 16 and 8 to 4 and
	2.  Move test_false if inside loop.  Fix logic for computing result
	stored to vd.

	sim/testsuite/sim/aarch64
	* bit.s: New.

	sim/aarch64/
	* simulator.c: (LDn_STn_SINGLE_LANE_AND_SIZE): New.
	(do_vec_LDn_single, do_vec_STn_single): New.
	(do_vec_LDnR): Add and set new nregs var.  Replace switch on nregs with
	loop over nregs using new var n.  Add n times size to address in loop.
	Add n to vd in loop.
	(do_vec_load_store): Add comment for instruction bit 24.  New var
	single to hold instruction bit 24.  Add new code to use single.  Move
	ldnr support inside single if statements.  Fix ldnr register counts
	inside post if statement.  Change HALT_NYI calls to HALT_UNALLOC.

	sim/testsuite/sim/aarch64/
	* ldn_single.s: New.
	* ldnr.s: New.
	* stn_single.s: New.

This adds an event that is emitted just before GDB presents a prompt
to the user.  This provides Python code a way to react to whatever
changes might have been made by the previous command.  For example, in
my GUI I use this to track changes to the selected frame and reflect
them in the UI.

Built and regtested on x86-64 Fedora 23.

gdb/ChangeLog
2017-02-14  Tom Tromey  <tom@tromey.com>

	PR python/13598:
	* python/python.c (gdbpy_before_prompt_hook): Emit before_prompt
	event.
	* python/py-evts.c (gdbpy_initialize_py_events): Add
	before_prompt registry.
	* python/py-events.h (events_object) <before_prompt>: New field.

gdb/doc/ChangeLog
2017-02-14  Tom Tromey  <tom@tromey.com>

	PR python/13598:
	* python.texi (Events In Python): Document events.before_prompt.

gdb/testsuite/ChangeLog
2017-02-14  Tom Tromey  <tom@tromey.com>

	PR python/13598:
	* gdb.python/py-events.exp: Add before_prompt event tests.

The test case implptrpiece.exp accesses the second byte of the short
integer number 1 and expects it to be zero.  This is valid for
little-endian targets, but fails on big-endian targets.

This is fixed by distinguishing the expected value by endianness.

gdb/testsuite/ChangeLog:

	* gdb.dwarf2/implptrpiece.exp: Fix check for big-endian targets.

	PR binutils/21159
	* readelf.c (dump_section_as_strings): Reset the start address if
	no decompression is perfromed.
	(dump_section_as_bytes): Likewise.

	PR binutils/21158
	* rddbg.c (read_symbol_stabs_debugging_info): Check for a null or
	empty symbol name.

	PR binutils/21157
	* stabs.c (parse_stab_enum_type): Check for corrupt NAME:VALUE
	pairs.
	(parse_number): Exit early if passed an empty string.

	PR binutils/21155
	* readelf.c (IN_RANGE): New macro.  Tests for an address + offset
	being within a given range.
	(target_specific_reloc_handling): Use macro to test for underflow
	as well as overflow of reloc offset.

This stops powerpc gas blithely accepting such nonsense as
"addi %f4,%cr3,%r31".

	PR 21118
gas/
	* NEWS: Mention powerpc register checks.
	* config/tc-ppc.c (struct pd_reg): Make value a short.  Add flags.
	(pre_defined_registers): Delete fpscr and pmr entries.  Set
	register type in flags.
	(cr_names): Set type in flags.
	(reg_name_search): Return pointer to struct pd_reg rather than value.
	(register_name): Adjust to suit.  Set X_md from flags.
	(ppc_parse_name): Likewise.
	(ppc_optimize_expr): New function.
	(md_assemble): Verify expresion reg flags match operand.
	* config/tc-ppc.h (md_optimize_expr): Define.
	(ppc_optimize_expr): Declare.
include/
	* opcode/ppc.h (PPC_OPERAND_*): Reassign values, regs first.
	(PPC_OPERAND_SPR, PPC_OPERAND_GQR): Define.
opcodes/
	* ppc-opc.c (powerpc_operands): Flag SPR, SPRG and TBR entries
	with PPC_OPERAND_SPR.  Flag PSQ and PSQM with PPC_OPERAND_GQR.

PR 21118 work exposed these errors in the testsuite.

	* testsuite/gas/ppc/cell.s: Correct invalid registers.
	* testsuite/gas/ppc/vle-simple-1.s: Likewise.
	* testsuite/gas/ppc/vle-simple-2.s: Likewise.

	* elf64-ppc.c (ppc64_elf_gc_mark_dynamic_ref): Support
	--gc-keep-exported, and test versioned field of sym rather than
	looking for @ in name.

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/ChangeLog:

	* NEWS: Add record Python bindings entry.

gdb/doc/ChangeLog:

	* python.texi (Recordings In Python): New section.

Change-Id: Ibacb5930085bff36b0003fde30db9a8178cb280b

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/testsuite/ChangeLog:

        * gdb.python/py-record-btrace.c, gdb.python/py-record-btrace.exp,
	gdb.python/py-record-full.c, gdb.python/py-record-full.exp: New file.

Change-Id: Icd919b4e1d5642f5cbc097a6aede1416eba402e5

This patch implements the gdb.Record Python object methods and fields for
record target btrace.  Also, implement a stub for record target full.

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/ChangeLog:

	* Makefile.in (SUBDIR_PYTHON_OBS): Add py-record-btrace.o,
	py-record-full.o.
	(SUBDIR_PYTHON_SRCS): Add py-record-btrace.c, py-record-full.c.
	* python/py-record-btrace.c, python/py-record-btrace.h,
	python/py-record-full.c, python/py-record-full.h: New file.
	* python/py-record.c: Add include for py-record-btrace.h and
	py-record-full.h.
	(recpy_method, recpy_format, recpy_goto, recpy_replay_position,
	recpy_instruction_history, recpy_function_call_history, recpy_begin,
	recpy_end): Use functions from py-record-btrace.c and py-record-full.c.
	* python/python-internal.h (PyInt_FromSsize_t, PyInt_AsSsize_t):
	New definition.
	(gdbpy_initialize_btrace): New export.
	* python/python.c (_initialize_python): Add gdbpy_initialize_btrace.

Change-Id: I8bd893672ffc7e619cc1386767897249e125973a

This patch adds three new functions to the gdb module in Python:
	- start_recording
	- stop_recording
	- current_recording
start_recording and current_recording return an object of the new type
gdb.Record, which can be used to access the recorded data.

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/ChangeLog

	* Makefile.in (SUBDIR_PYTHON_OBS): Add python/py-record.o.
	(SUBDIR_PYTHON_SRCS): Add python/py-record.c.
	* python/py-record.c: New file.
	* python/python-internal.h (gdbpy_start_recording,
	gdbpy_current_recording, gdpy_stop_recording,
	gdbpy_initialize_record): New export.
	* python/python.c (_initialize_python): Add gdbpy_initialize_record.
	(python_GdbMethods): Add gdbpy_start_recording,
	gdbpy_current_recording and gdbpy_stop_recording.

Change-Id: I772aa9aa068621443f10a330b11dc7dc9a63face

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/ChangeLog

	* record-btrace.c (record_btrace_record_method): New function.
	(init_record_btrace_ops): Initialize to_record_method.
	* record-full.c (record_full_record_method): New function.
	(init_record_full_ops, init_record_full_core_ops): Add
	record_full_record_method.
	* record.h (enum record_method): New enum.
	* target-debug.h (target_debug_print_enum_record_method: New define.
	* target-delegates.c: Regenerate.
	* target.c (target_record_method): New function.
	* target.h: Include record.h.
	(struct target_ops) <to_record_method>: New field.
	(target_record_method): New export.

Change-Id: I05daa70e4e08a19901e848c731bb7d60cd87cc5a

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/ChangeLog

	* record.h (record_start, record_stop): New export.
	* record.c (record_start, record_stop): New function.

Change-Id: If235d4bde8ec61dab6dbd23e087430e66d2e91a7

Currently, btrace_find_insn_by_number will iterate over all function call
segments to find the one that contains the needed instruction.  This linear
search is too slow for the upcoming Python bindings that will use this
function to access instructions.  This patch introduces a vector in struct
btrace_thread_info that holds pointers to all recorded function segments and
allows to use binary search.

The proper solution is to turn the underlying tree into a vector of objects
and use indices for access.  This requires more work.  A patch set is
currently being worked on and will be published later.

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/ChangeLog:
	* btrace.c (btrace_fetch): Copy function call segments pointer
	into a vector.
	(btrace_clear): Clear the vector.
	(btrace_find_insn_by_number): Use binary search to find the correct
	function call segment.
	* btrace.h (brace_fun_p): New typedef.
	(struct btrace_thread_info) <functions>: New field.

Change-Id: I8a7f67e80bfe4ff62c4192f74a2153a70bf2a035

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/ChangeLog:

	* record-btrace.c (btrace_ui_out_decode_error): Move most of it ...
	* btrace.c (btrace_decode_error): ... here.  New function.
	* btrace.h (btrace_decode_error): New export.

Change-Id: I2b4b43a55dbfd9f526a540d2ad52a6708f31feba

This gives all instructions, including gaps, a unique number.  Add a function
to retrieve the error code if a btrace instruction iterator points to an
invalid instruction.

Signed-off-by: Tim Wiederhake <tim.wiederhake@intel.com>

gdb/ChangeLog:

	* btrace.c (ftrace_call_num_insn, btrace_insn_get_error): New function.
	(ftrace_new_function, btrace_insn_number, btrace_insn_cmp,
	btrace_find_insn_by_number): Remove special case for gaps.
	* btrace.h (btrace_insn_get_error): New export.
	(btrace_insn_number, btrace_find_insn_by_number): Adjust comment.
	* record-btrace.c (btrace_insn_history): Print number for gaps.
	(record_btrace_info, record_btrace_goto): Handle gaps.

Change-Id: I8eb0e48a95f4278522fea74ea13526bfe6898ecc

On 64-bit FC25, the _dl_runtime_resolve function uses a conditional branch to
'call' a particular variant optimized for that system:

    (gdb) disas _dl_runtime_resolve_avx_opt
    Dump of assembler code for function _dl_runtime_resolve_avx_opt:
       0x00007ffff7deeb60 <+0>: push   %rax
       0x00007ffff7deeb61 <+1>: push   %rcx
       0x00007ffff7deeb62 <+2>: push   %rdx
       0x00007ffff7deeb63 <+3>: mov    $0x1,%ecx
       0x00007ffff7deeb68 <+8>: xgetbv
       0x00007ffff7deeb6b <+11>: mov    %eax,%r11d
       0x00007ffff7deeb6e <+14>: pop    %rdx
       0x00007ffff7deeb6f <+15>: pop    %rcx
       0x00007ffff7deeb70 <+16>: pop    %rax
       0x00007ffff7deeb71 <+17>: and    $0x4,%r11d
       0x00007ffff7deeb75 <+21>: bnd je 0x7ffff7def4a0 <_dl_runtime_resolve_sse_vex>
    End of assembler dump.

When computing the function-level trace, btrace treats this as a switch from
_dl_runtime_resolve_avx_opt to _dl_runtime_resolve_sse_vex.  We know that we
switched functions but we can't really say in which caller/callee relationship
those two functions are.

In addition to preserving the indentaion level, also preserve the caller
information.  This is a heuristic since we don't really know.  But at least in
this case, this seems to be the right thing to do.

This fixes a fail in gdb.btrace/rn-dl-bind.exp on 64-bit FC25.

gdb/
	* btrace.c (ftrace_new_switch): Preserve up link and flags.

"_gp" could conflict with ABI-complient code.  While it's probably OK
because MIPS uses this name, we figured it'd be good to clean this up
before a release with RISC-V in it.

ld/ChangeLog:

2017-02-13  Palmer Dabbelt  <palmer@dabbelt.com>

        * emulparams/elf32lriscv-defs.sh (SDATA_START_SYMBOLS): Change
        _gp to __global_pointer$.

bfd/ChangeLog:

2017-02-13  Palmer Dabbelt  <palmer@dabbelt.com>

        * elfnn-riscv.c (riscv_global_pointer_value): Change _gp to
        __global_pointer$.

	PR binutils/21151
	* dwarf2.c (_bfd_dwarf2_find_nearest_line): Check for an invalid
	unit length field.

2017-02-13  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	gas/
	* config/tc-arm.c (parse_ifimm_zero): Make prefix optional in unified
	syntax.
	* testsuite/gas/arm/vcmp-noprefix-imm.d: New file.
	* testsuite/gas/arm/vcmp-noprefix-imm.s: New file.

	PR binutils/21150
	* nm.c (file_symbol): Add test of string length before testing
	string characters.

	PR binutils/21135
	(dump_section_as_bytes, load_specific_debug_section): Likewise.

	PR binutils/21135
	* readelf.c (dump_section_as_bytes): Handle the case where
	uncompress_section_contents returns false.

Fix invalid memory access attempting to read the compression header of a too-small compressed section.

	PR binutils/21149
	* readelf.c (get_compression_header): Add size parameter.  Check
	size against sizeof compression header before attempting to
	extract the header.
	(process_section_headers): Pass size to get_compression_header.
	(dump_section_as_strings): Likewise.
	(dump_section_as_bytes): Likewise.
	(load_specific_debug_section): Likewise.

	PR binutils/21148
	* readelf.c (process_version_sections): Include size of auxillary
	version information when checking for buffer overflow.

	PR binutils/21147
	* readelf.c (process_section_contents): Fix off by one error
	reporting un-dumped sections.

Fix read-after-free error in readelf when processing multiple, relocated sections in an MSP430 binary.

	PR binutils/21139
	* readelf.c (target_specific_reloc_handling): Add num_syms
	parameter.  Check for symbol table overflow before accessing
	symbol value.  If reloc pointer is NULL, discard all saved state.
	(apply_relocations): Pass num_syms to target_specific_reloc_handling.
	Call target_specific_reloc_handling with a NULL reloc pointer
	after processing all of the relocs.

This fairly obvious patch adds usage text to the load command's help text.

Originally it did not have usage and mentioned things like FILE and OFFSET
without explaining how those should be passed in the command.

gdb/ChangeLog:

2017-02-13  Luis Machado  <lgustavo@codesourcery.com>

	* symfile (_initialize_symfile): Add usage text to the load command's
	help text.

gdb/doc/ChangeLog:

2017-02-13  Luis Machado  <lgustavo@codesourcery.com>

	* gdb.texinfo (Target Commands): Document the optional offset
	argument for the load command.

This patch addresses timeout failures i noticed while testing aarch64-elf.

FAIL: gdb.linespec/explicit.exp: complete unique function name (timeout)
FAIL: gdb.linespec/explicit.exp: complete non-unique function name (timeout)
FAIL: gdb.linespec/explicit.exp: complete non-existant function name (timeout)
FAIL: gdb.linespec/explicit.exp: complete unique file name (timeout)
FAIL: gdb.linespec/explicit.exp: complete non-unique file name (timeout)

The timeouts were caused by an attempt to match a bell character (x07) that
doesn't show up on my particular test setup.

The bell character is output whenever one tries to complete a pattern and there
are multiple possible matches. When there is only one possible match, GDB will
complete the input pattern without outputting the bell character.

The reason for the discrepancy in this test's behavior is due to the use of
"main" for a unique name test.

On glibc-based systems, GDB may notice the "main_arena" symbol, which is
a data global part of glibc's malloc implementation. Therefore a bell character
will be output because we have a couple possible completion matches.

GDB should not be outputting such a data symbol as a possible match, but this
problem may/will be addressed in a future change and is besides the point of
this particular change.

On systems that are not based on glibc, GDB will not see any other possible
matches for completing "main", so there will be no bell characters.

The use of main is a bit fragile though, so the patch adds a new local function
with a name that has a greater chance of being unique and adjusts the test to
iuse it.

I've also added the regular expression switch (-re) to all the
gdb_test_multiple calls that were missing it. Hopefully this will reduce the
chances of someone wasting time trying to match a regular expression (a much
more common use case) when, in reality, the pattern is supposed to be matched
literally.

gdb/testsuite/ChangeLog

2017-02-13  Luis Machado  <lgustavo@codesourcery.com>

	* gdb.linespec/explicit.c (my_unique_function_name): New function.
	(main): Call my_unique_function_name.
	* gdb.linespec/explicit.exp: Use my_unique_function_name to test
	completion of patterns with a single match.
	Add missing -re switches to gdb_test_multiple calls.

This test attempts to load a x86 core file no matter what target
architectures the tested GDB supports. If GDB doesn't know how to handle
a i386 target, it is very likely the core file will not be recognized.

In this case we should still attempt to load a core file to make sure GDB
doesn't crash or throws an internal error.  But we should not proceed to
try to read memory unconditionally.

This patch makes the test check for proper i386 arch support in GDB and bails
out if i386 is not supported and the core file format is not recognized.

This addresses the spurious aarch64-elf failures i'm seeing for this test.

gdb/testsuite/ChangeLog:

2017-02-13  Luis Machado  <lgustavo@codesourcery.com>

	* gdb.arch/i386-biarch-core.exp: Check for i386 arch support and
	return if core file is not recognized.

Fix readelf writing to illegal addresses whilst processing corrupt input files containing symbol-difference relocations.

	PR binutils/21137
	* readelf.c (target_specific_reloc_handling): Add end parameter.
	Check for buffer overflow before writing relocated values.
	(apply_relocations): Pass end to target_specific_reloc_handling.