Match library name prefixed with sysroot

We enable systemtap probe in glibc recently, and see the following gdb fail,

(gdb) set solib-absolute-prefix /.
...
Stopped due to shared library event:^M
  Inferior loaded /./foo/bar/gdb.base/break-probes-solib.so
...
(gdb) FAIL: gdb.base/break-probes.exp: run til our library loads (the program exited)

$binfile_lib is /foo/bar/gdb.base/break-probes-solib.so, but the
sysroot is prefixed in solib.c:solib_find, as comments described:

   Global variable GDB_SYSROOT is used as a prefix directory
   to search for shared libraries if they have an absolute path.

so the output becomes "/./foo/bar/gdb.base/break-probes-solib.so", which
is still correct.  However, the test repeatedly continue the program
and tries to match $binfile_lib, finally, the program exits and the
test fails.

This patch is to adjust the pattern to match $sysroot$binfile_lib
instead of $binfile_lib.

gdb/testsuite:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* gdb.base/break-probes.exp: Match library name prefixed with
	sysroot.
Fix build breakage on 32-bit targets with 64-bit bfd

	* readelf.c (get_32bit_elf_symbols): Cast bfd_size_type values to
	unsigned long for %lx.
	(get_64bit_elf_symbols, process_section_groups): Likewise.
Don't deprecate powerpc mftb insn

mftb is marked phased out in the architecture manual, but we can keep
it as an extended mnemonic for mftbl.

	* ppc-opc.c (powerpc_opcodes <mftb>): Don't deprecate for power7.
	(TB): Delete.
	(insert_tbr, extract_tbr): Validate tbr number.
Sanity checks on version section

	* elf.c (_bfd_elf_slurp_version_tables): Exit loops when vn_next/
	vna_next/vd_next/vda_next is zero.  Correct counts.
Fix date in changelog
Import readlink

This patch is to import readlink gnulib module.  stat module is imported
too, but it isn't used by gdb.

gdb:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add readlink.
	* gnulib/aclocal.m4: Re-generated.
	* gnulib/config.in: Likewise.
	* gnulib/configure: Likewise.
	* gnulib/import/Makefile.am: Likewise.
	* gnulib/import/Makefile.in: Likewise.
	* gnulib/import/m4/gnulib-cache.m4: Likewise.
	* gnulib/import/m4/gnulib-comp.m4: Likewise.
	* gnulib/import/dosname.h: New file
 	* gnulib/import/m4/largefile.m4: New file.
	* gnulib/import/m4/readlink.m4: New file.
	* gnulib/import/m4/stat.m4: New file.
	* gnulib/import/readlink.c: New file.
 	* gnulib/import/stat.c: New file.
Use readlink unconditionally

Since readlink module is imported, we can use it unconditionally.
This patch is to remove configure checks and HAVE_READLINK checks in
code.  It was mentioned in the patch below

  [RFA/commit] gdbserver: return ENOSYS if readlink not supported.
  https://sourceware.org/ml/gdb-patches/2012-02/msg00148.html

to use readlink in gdbserver, but we chose something simple at that
moment.

gdb:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* configure.ac (AC_CHECK_FUNCS): Remove readlink.
	* config.in, configure: Re-generate.
	* inf-child.c (inf_child_fileio_readlink): Don't check
	HAVE_READLINK is defined.

gdb/gdbserver:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* configure.ac(AC_CHECK_FUNCS): Remove readlink.
	* config.in, configure: Re-generate.
	* hostio.c (handle_unlink): Remove code checking HAVE_READLINK
	is defined.
Import lstat

This patch is to import lstat gnulib module.

gdb:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add
	lstat.
	* gnulib/aclocal.m4: Re-generated.
	* gnulib/config.in: Re-generated.
	* gnulib/configure: Re-generated.
	* gnulib/import/Makefile.am: Re-generated.
	* gnulib/import/Makefile.in: Re-generated.
	* gnulib/import/m4/gnulib-cache.m4: Re-generated.
	* gnulib/import/m4/gnulib-comp.m4: Re-generated.
	* gnulib/import/lstat.c: New file.
	* gnulib/import/m4/lstat.m4: New file.
Use lstat unconditionally

Since lstat gnulib module is imported, we can use it unconditionally.
lstat usage was introduced by this patch

https://sourceware.org/ml/gdb-patches/2012-01/msg00390.html

during the review, it was suggested to import gnulib lstat module, but
we didn't do that.

gdb:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* configure.ac (AC_CHECK_FUNCS): Remove lstat.
	* config.in, configure: Regenerate.
	* symfile.c (find_separate_debug_file_by_debuglink): Remove
	code checking HAVE_LSTAT is defined.
Import canonicalize-lgpl

This patch is to import canonicalize-lgpl module, which provides
readlpath and canonicalize_file_name.

gdb:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add
	canonicalize-lgpl.
	* aclocal.m4: Re-generated.
	* config.in: Re-generated.
	* configure: Re-generated.
	* import/Makefile.am: Re-generated.
	* import/Makefile.in: Re-generated.
	* import/m4/gnulib-cache.m4: Re-generated.
	* import/m4/gnulib-comp.m4: Re-generated.
	* import/canonicalize-lgpl.c: New file.
	* import/extra/snippet/_Noreturn.h: New file.
	* import/m4/canonicalize.m4: New file.
	* import/m4/double-slash-root.m4: New file.
	* import/m4/eealloc.m4: New file.
	* import/m4/malloca.m4: New file.
	* import/m4/nocrash.m4: New file.
	* import/m4/stdlib_h.m4: New file.
	* import/malloca.c: New file.
	* import/malloca.h: New file.
	* import/malloca.valgrind: New file.
Use canonicalize_file_name unconditionally

gdb:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* configure.ac (AC_CHECK_FUNCS): Remove canonicalize_file_name
	and realpath.
	* config.in: Re-generated.
	* configure: Re-generated.
	* utils.c (gdb_realpath): Remove code calling realpath,
	canonicalize_file_name and pathconf.
	[!_WIN32]: Call canonicalize_file_name.
Import rename module

This patch is to import rename module.

gdb:

2014-11-28  Yao Qi  <yao@codesourcery.com>

	* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Add
	rename.
	* gnulib/aclocal.m4: Re-generated.
	* gnulib/config.in: Re-generated.
	* gnulib/configure: Re-generated.
	* gnulib/import/Makefile.am: Re-generated.
	* gnulib/import/Makefile.in: Re-generated.
	* gnulib/import/m4/gnulib-cache.m4: Re-generated.
	* gnulib/import/m4/gnulib-comp.m4: Re-generated.
	* import/basename-lgpl.c: New file.
	* import/dirname-lgpl.c: New file.
	* import/dirname.h: New file.
	* import/m4/dirname.m4: New file.
	* import/m4/malloc.m4: New file.
	* import/m4/rename.m4: New file.
	* import/m4/rmdir.m4: New file.
	* import/m4/stdio_h.m4: New file.
	* import/malloc.c: New file.
	* import/rename.c: New file.
	* import/rmdir.c: New file.
	* import/same-inode.h: New file.
	* import/stdio.c: New file.
	* import/stdio.in.h: New file.
	* import/stripslash.c: New file.
gdb_realpath: Rework comment about handling on Windows.

Rework the comment to explain why we're still relying on GetFullPathName
even though gnulib ensures that canonicalize_file_name is now available
on all platforms, including Windows.

gdb/ChangeLog:

        * utils.c (gdb_realpath): Rework comment about handling on
        Windows.
Remove (dead-code) native core file sniffers on Linux targets

Since Andreas Arnez' recent patch series, all Linux targets install
gdbarch_iterate_over_regset_sections routines.  This means that on
Linux native targets, old-style core sniffers are never used.

Most Linux targets haven't been using such sniffers for a long time
anyway, but a couple remain: ia64 and sparc use core-regset.o, and
m68k installs its own core_fns.  All this is now dead code, which
this commit removes.

gdb/
2014-11-28  Ulrich Weigand  <uweigand@de.ibm.com>

	* config/ia64/linux.mh (NATDEPFILES): Remove core-regset.o.
	* config/sparc/linux.mh (NATDEPFILES): Likewise.
	* config/sparc/linux64.mh (NATDEPFILES): Likewise.
	* m68klinux-nat.c (fetch_core_registers): Remove.
	(linux_elf_core_fns): Remove.
	(_initialize_m68k_linux_nat): Do not call deprecated_add_core_fns.
Fix amd64 dwarf register number mapping (MMX register and higher)

Dwarf register numbers are defined in "System V Application Binary
Interface AMD64 Architecture Processor Supplement Draft Version 0.99.6"

The amd64_dwarf_regmap array is missing the 8 MMX registers in Figure
3.36: DWARF Register Number Mapping page 57.  This leads to a wrong
value for the registers past this point.

gdb/ChangeLog:

        Pushed by Joel Brobecker  <brobecker@adacore.com>.
        * amd64-tdep.c (amd64_dwarf_regmap array): Add missing MMX
        registers.

Tested on x86_64-linux.
Correct fabs and fneg insns in simulator

It seems that the implementation of the SH fabs and fneg insns in the
simulator is not correct.  They use the FP_UNARY macro which checks the
FPSCR.PR setting and raises an exception if PR = 1 (double precision)
and the register number is not even (i.e. a valid DF reg number).
For normal unary FP insns this is fine.  However, fneg and fabs perform
the same (integer) operations regardless of the FPSCR.PR setting.

This issue initially popped up here
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63260

I've checked some of the failing tests mentioned in GCC PR 63260 above
with the patch applied and the failures go away.

sim/sh/ChangeLog (tiny patch):

	* gencode.c (fabs, fneg): Implement as integer operation
	instead of using the FP_UNARY macro.
Fix prints in tests for Python 3

Python 3's print requires to use parentheses, so this patch adds them
where they were missing.

gdb/testsuite/ChangeLog:

	* gdb.ada/py_range.exp: Add parentheses to calls to print.
	* gdb.dwarf2/symtab-producer.exp: Same.
	* gdb.gdb/python-interrupts.exp: Same.
	* gdb.gdb/python-selftest.exp: Same.
	* gdb.python/py-linetable.exp: Same.
	* gdb.python/py-type.exp: Same.
	* gdb.python/py-value-cc.exp: Same.
	* gdb.python/py-value.exp: Same.
Remove broken nios2 assembler dwim support.

2014-11-28  Sandra Loosemore  <sandra@codesourcery.com>

	include/opcode/
	* nios2.h (NIOS2_INSN_ADDI, NIOS2_INSN_ANDI): Delete.
	(NIOS2_INSN_ORI, NIOS2_INSN_XORI): Delete.
	(NIOS2_INSN_OPTARG): Renumber.

	opcodes/
	* nios2-opc.c (nios2_r1_opcodes): Remove deleted attributes
	from descriptors.

	gas/
	* config/tc-nios2.c (can_evaluate_expr, get_expr_value): Delete.
	(output_addi, output_andi, output_ori, output_xori): Delete.
	(md_assemble): Remove calls to deleted functions.

	gas/testsuite/
	* gas/nios2/nios2.exp: Make "movi" a list test.
	* gas/nios2/movi.s: Adjust comments, add another case.
	* gas/nios2/movi.l: New.
	* gas/nios2/movi.d: Delete.
Automatic date update in version.in
Enable chained function calls in C++ expressions.

gdb/ChangeLog:

	* eval.c: Include gdbthread.h.
	(evaluate_subexp): Enable thread stack temporaries before
	evaluating a complete expression and clean them up after the
	evaluation is complete.
	* gdbthread.h: Include common/vec.h.
	(value_ptr): New typedef.
	(VEC (value_ptr)): New vector type.
	(value_vec): New typedef.
	(struct thread_info): Add new fields stack_temporaries_enabled
	and stack_temporaries.
	(enable_thread_stack_temporaries)
	(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
	(get_last_thread_stack_temporary)
	(value_in_thread_stack_temporaries): Declare.
	* gdbtypes.c (class_or_union_p): New function.
	* gdbtypes.h (class_or_union_p): Declare.
	* infcall.c (call_function_by_hand): Store return values of class
	type as	temporaries on stack.
	* thread.c (enable_thread_stack_temporaries): New function.
	(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
	(get_last_thread_stack_temporary): Likewise.
	(value_in_thread_stack_temporaries): Likewise.
	* value.c (value_force_lval): New function.
	* value.h (value_force_lval): Declare.

gdb/testsuite/ChangeLog:

	* gdb.cp/chained-calls.cc: New file.
	* gdb.cp/chained-calls.exp: New file.
	* gdb.cp/smartp.exp: Remove KFAIL for "p c2->inta".