Give informative error message for stub-group-size

This patch gives current stub-group-size in error message when stub
is too far away.

	* aarch64.cc (Target_aarch64): Add new variable: stub_group_size_.
	(AArch64_relocate_functions::maybe_apply_stub): Add new parameter.
	Update error message.
	(Target_aarch64::do_relax): Use absolute value of option
	stub_group_size. Replace local variable with class member
	stub_group_size_.
Automatic date update in version.in
Use autoconf check for long long in binutils

Also fix a place where %lld was wrongly used to print a dwarf_vma.

	* configure.ac: Check for long long and sizes of long long and long.
	* elfcomm.h (HOST_WIDEST_INT): Test HAVE_LONG_LONG in place of
	__STDC_VERSION__ and __GNUC__.
	* strings.c (print_strings): Likewise.
	* dwarf.c (DWARF_VMA_FMT, DWARF_VMA_FMT_LONG): Likewise.
	(read_debug_line_header): Use dwarf_vmatoa to print warning.
	* configure: Regenerate.
	* config.in: Regenerate.
symtab.c (domain_name) <MODULE_DOMAIN>: Add missing case.

gdb/ChangeLog:

	* symtab.c (domain_name) <MODULE_DOMAIN>: Add missing case.
This commit causes hundreds of core file regressions in gdb:

commit f64e188b58f4aab4cbd03aa6e9fc1aa602546e26
Author: Nick Clifton <nickc@redhat.com>
Date:   Tue Dec 9 12:42:18 2014 +0000

    More fixes for memory access violations triggered by fuzzed binaries.
    [snip]
        * elf.c (elf_parse_notes): Check that the namedata is long enough
        for the string comparison that is about to be performed.
        (elf_read_notes): Zero-terminate the note buffer.

This change to elf_parse_notes is the culprit:

+           for (i = ARRAY_SIZE (grokers); i--;)
+             if (in.namesz >= sizeof grokers[i].string - 1
+                 && strncmp (in.namedata, grokers[i].string,
+                             sizeof (grokers[i].string) - 1) == 0)

Note how this applies sizeof to grokers[i].string...

bfd/ChangeLog

        * elf.c (elf_parse_notes): Define convenience macro
        GROKER_ELEMENT to add elements to 'grokers'.
        Use grokers.len instead of sizeof in string comparisons.
(lookup_global_symbol_from_objfile): Simplify.

gdb/ChangeLog:

	* symtab.c (lookup_symbol_in_objfile_symtabs): Delete forward decl.
	(symbol *lookup_symbol_via_quick_fns): Ditto.
	(lookup_symbol_in_objfile): Add forward decl.
	(lookup_global_symbol_from_objfile): Simplify, call
	lookup_symbol_in_objfile.
cp-namespace.c (cp_lookup_nested_symbol): Fix comments.

gdb/ChangeLog:

	* cp-namespace.c (cp_lookup_nested_symbol): Fix comments.
Fix a few moere memory access violations.

	PR binutils/17512
	* dwarf.c (display_gdb_index): Add more range checks.
Automatic date update in version.in
Don't scan prologue past epilogue

This patch is to stop prologue analysis past epilogue in for arm mode,
while we've already had done the same to thumb mode (see
thumb_instruction_restores_sp).  This is useful to parse functions
with empty body (epilogue follows prologue).

gdb:

2014-12-12  Yao Qi  <yao@codesourcery.com>

	* arm-tdep.c (arm_instruction_restores_sp): New function.
	(arm_analyze_prologue): Call arm_instruction_restores_sp.
	(arm_in_function_epilogue_p): Move code to
	arm_instruction_restores_sp.
Improve arm_skip_prologue by using arm_analyze_prologue

Hi,
I see many fails in dw2-dir-file-name.exp on arm target when test
case is compiled with -marm, however, these fails are disappeared when
test case is compiled with -mthumb.

The difference of pass and fail shown below is that "0x000085d4 in" isn't
printed out, but test case expects to see it.

-Breakpoint 2, compdir_missing__ldir_missing__file_basename () at tmp-dw2-dir-file-name.c:999^M
-(gdb) FAIL: gdb.dwarf2/dw2-dir-file-name.exp: compdir_missing__ldir_missing__file_basename: continue to breakpoint: compdir_missing__ldir_missing__file_basename
+Breakpoint 2, 0x000085d4 in compdir_missing__ldir_missing__file_basename () at tmp-dw2-dir-file-name.c:999^M
+(gdb) PASS: gdb.dwarf2/dw2-dir-file-name.exp: compdir_missing__ldir_missing__file_basename: continue to breakpoint: compdir_missing__ldir_missing__file_basename

This difference is caused by setting breakpoint at the first instruction
in the function (actually, the first instruction in prologue, at [1]),
so that frame_show_address returns false, and print_frame doesn't print the
address.

   0x00008620 <+0>:     push    {r11}           ; (str r11, [sp, #-4]!)  <--[1]
   0x00008624 <+4>:     add     r11, sp, #0
   0x00008628 <+8>:     ldr     r3, [pc, #24]   ; 0x8648 <compdir_missing__ldir_missing__file_basename+40>
   0x0000862c <+12>:    ldr     r3, [r3]
   0x00008630 <+16>:    add     r3, r3, #1
   0x00008634 <+20>:    ldr     r2, [pc, #12]   ; 0x8648 <compdir_missing__ldir_missing__file_basename+40>

Then, it must be the arm_skip_prologue's fault that unable to skip
instructions in prologue.  At the end of arm_skip_prologue, it matches
several instructions, such as "str  r(0123),[r11,#-nn]" and
"str  r(0123),[sp,#nn]", but "push {r11}" isn't handled.

These instruction matching code in arm_skip_prologue, which can be regarded
as leftover of development for many years, should be merged to
arm_analyze_prologue and use arm_analyze_prologue in arm_skip_prologue.
Here is the something like the history of arm_{skip,scan,analyze}_prologue.
Around 2002, there are arm_skip_prologue and arm_scan_prologue, but code are
duplicated to some extent.  When match an instruction, both functions should
be modified, for example in Michael Snyder's patch
https://sourceware.org/ml/gdb-patches/2002-05/msg00205.html and Michael
expressed the willingness to merge both into one.  Daniel added code call
thumb_analyze_prologue in arm_skip_prologue in 2006, but didn't handle its
counterpart arm_analyze_prologue, which is added in 2010
<https://sourceware.org/ml/gdb-patches/2010-03/msg00820.html>
however, the instructions matching at the bottom of arm_skip_prologue wasn't
cleaned up.  This patch is to merge them into arm_analyze_prologue.

gdb:

2014-12-12  Yao Qi  <yao@codesourcery.com>

	PR tdep/14261
	* arm-tdep.c (arm_skip_prologue): Remove unused local variable
	'skip_pc'.  Remove code skipping prologue instructions, use
	arm_analyze_prologue instead.
	(arm_analyze_prologue): Stop the scanning for unrecognized
	instruction when skipping prologue.
Copy relocations against protected symbols

Copy relocs are used in a scheme to avoid dynamic text relocations in
non-PIC executables that refer to variables defined in shared
libraries.  The idea is to have the linker define any such variable in
the executable, with a copy reloc copying the initial value, then have
both the executable and shared library refer to the executable copy.
If the shared library defines the variable as protected then we have
two copies of the variable being used.

	PR 15228
	* elflink.c (_bfd_elf_adjust_dynamic_copy): Add "info" param.
	Error on copy relocs against protected symbols.
	(elf_merge_st_other): Set h->protected_def.
	* elf-bfd.h (struct elf_link_hash_entry): Add "protected_def".
	(_bfd_elf_adjust_dynamic_copy): Update prototype.
	* elf-m10300.c (_bfd_mn10300_elf_adjust_dynamic_symbol): Update
	_bfd_elf_adjust_dynamic_copy call.
	* elf32-arm.c (elf32_arm_adjust_dynamic_symbol): Likewise.
	* elf32-cr16.c (_bfd_cr16_elf_adjust_dynamic_symbol): Likewise.
	* elf32-cris.c (elf_cris_adjust_dynamic_symbol): Likewise.
	* elf32-hppa.c (elf32_hppa_adjust_dynamic_symbol): Likewise.
	* elf32-i370.c (i370_elf_adjust_dynamic_symbol): Likewise.
	* elf32-i386.c (elf_i386_adjust_dynamic_symbol): Likewise.
	* elf32-lm32.c (lm32_elf_adjust_dynamic_symbol): Likewise.
	* elf32-m32r.c (m32r_elf_adjust_dynamic_symbol): Likewise.
	* elf32-m68k.c (elf_m68k_adjust_dynamic_symbol): Likewise.
	* elf32-metag.c (elf_metag_adjust_dynamic_symbol): Likewise.
	* elf32-or1k.c (or1k_elf_adjust_dynamic_symbol): Likewise.
	* elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Likewise.
	* elf32-s390.c (elf_s390_adjust_dynamic_symbol): Likewise.
	* elf32-sh.c (sh_elf_adjust_dynamic_symbol): Likewise.
	* elf32-tic6x.c (elf32_tic6x_adjust_dynamic_symbol): Likewise.
	* elf32-tilepro.c (tilepro_elf_adjust_dynamic_symbol): Likewise.
	* elf32-vax.c (elf_vax_adjust_dynamic_symbol): Likewise.
	* elf64-ppc.c (ppc64_elf_adjust_dynamic_symbol): Likewise.
	* elf64-s390.c (elf_s390_adjust_dynamic_symbol): Likewise.
	* elf64-sh64.c (sh64_elf64_adjust_dynamic_symbol): Likewise.
	* elf64-x86-64.c (elf_x86_64_adjust_dynamic_symbol): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_adjust_dynamic_symbol): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_adjust_dynamic_symbol): Likewise.
	* elfxx-sparc.c (_bfd_sparc_elf_adjust_dynamic_symbol): Likewise.
	* elfxx-tilegx.c (tilegx_elf_adjust_dynamic_symbol): Likewise.
gdbserver: Rephrase loops in regsets_fetch/store_inferior_registers

Replace the while-loops in linux-low.c that iterate over regsets by
for-loops.  This makes it clearer what is iterated over.  Also, since
"continue" now moves on to the next iteration without having to
increment the regset pointer first, the code is slightly reduced.

In case of EIO the old code did not increment the regset pointer, but
iterated over the same (now disabled) regset again.  This extra
iteration is now avoided.

gdb/gdbserver/ChangeLog:

	* linux-low.c (regsets_fetch_inferior_registers): Rephrase
	while-loop as for-loop.
	(regsets_store_inferior_registers): Likewise.
gdbserver: Prevent stale/random values in register cache

When fetch_inferior_registers does not update all registers, this
patch assures that no stale register values remain in the register
cache.  On Linux platforms using the regsets interface, when one of
the ptrace calls used for fetching the register values returns an
error, this patch also avoids copying the random data returned from
ptrace into the register cache.  All unfetched registers are marked
"unavailable" instead.

gdb/gdbserver/ChangeLog:

	* linux-low.c (regsets_fetch_inferior_registers): Do not invoke
	the regset's store function when ptrace returned an error.
	* regcache.c (get_thread_regcache): Invalidate register cache
	before fetching inferior's registers.
gdbserver: Support read-only regsets in linux-low.c

For GNU/Linux targets using the regsets interface, this change
supports regsets that can be read but not written.  The S390 "last
break" regset is an example.  So far it had been defined with
regset->set_request == PTRACE_GETREGSET, such that the respective
ptrace call does not cause any harm.  Now we just skip the whole
read/modify/write sequence for regsets that do not define a
fill_function.

gdb/gdbserver/ChangeLog:

	* linux-low.c (regsets_store_inferior_registers): Skip regsets
	without a fill_function.
	* linux-s390-low.c (s390_fill_last_break): Remove.
	(s390_regsets): Set fill_function to NULL for NT_S390_LAST_BREAK.
	(s390_arch_setup): Use regset's size instead of fill_function for
	loop end condition.
S390: Fix gdbserver support for TDB

This makes gdbserver actually provide values for the TDB registers
when the inferior was stopped in a transaction.  The change in
linux-low.c is needed to suppress the warning for an unavailable TDB.

The test case 's390-tdbregs.exp' passes with this patch and fails
without.

gdb/gdbserver/ChangeLog:

	* linux-low.c (regsets_fetch_inferior_registers): Suppress the
	warning upon ENODATA from ptrace.
	* linux-s390-low.c (s390_store_tdb): New.
	(s390_regsets): Add regset for NT_S390_TDB.
Set bfd_error in _bfd_elf_adjust_dynamic_copy

	PR 15228
	* elflink.c (_bfd_elf_adjust_dynamic_copy): Call bfd_set_error.
PowerPC register numbers in DWARF

This makes gas .cfi output to .debug_frame match register numbering
emitted by gcc.  md_reg_eh_frame_to_debug_frame follows the ABI,
targets not using it, notably Linux, don't.

	* config/tc-ppc.h (md_reg_eh_frame_to_debug_frame): Match current
	gcc behaviour.
	* config/te-aix.h: New file.
	* configure.tgt: Use em=aix for powerpc-aix.
Add zex instructions for moxie port
Add zex instruction support for moxie port