S390: Fix 'expedite' for s390-te-linux64

Fix a typo in the expedited registers for s390-te-linux64.

gdb/ChangeLog:

	* features/Makefile (s390-te-linux64-expedite): Replace
	non-existant r14 and r15 by r14l and r15l, respectively.
	* regformats/s390-te-linux64.dat: Regenerate.
ppc64_elf_edit_opd revamp

This patch sorts .opd relocs (see pr17666) and allows .opd sections
with a mix of 16 and 24 byte entries to be edited.

	* elf64-ppc.c (OPD_NDX): Define.  Use throughout for sizing/indexing
	_opd_sec_data array, halving required memory.
	(sort_r_offset): New function.
	(ppc64_elf_edit_opd): Sort incoming relocs.  Accept .opd
	sections with a mix of 16 and 24 byte OPD entries.  Don't
	attempt to honour --non-overlapping-opd for .opd sections with
	unexpected relocs.  Simplify opd entry size calculations by
	first finding the reloc for the next entry.  Make edit loop
	handle one opd entry per iteration, with an inner loop
	handling relocs per entry.
[MIPS] When calculating a relocation using an undefined weak symbol don't check for overflow.

In MIPS the relocation calculation only ignores the overflow checks for undefined
weak symbols on relocations associated with j/jal.   This patch extends this to
the relocations used by the: b* instructions; pc/gp relative symbol offsets; and the
lwpc/ldpc MIPS r6 instructions.

bfd/
	* elfxx-mips.c (mips_elf_calculate_relocation): Only check for overflow
	on non-weak undefined symbols.

ld/testsuite/
	* ld-mips-elf/mips-elf.exp: Add in undefined weak overflow tests for
	o32, n32 and n64.
	* ld-mips-elf/undefweak-overflow.s: New test.
	* ld-mips-elf/undefweak-overflow.d: New test.
	* ld-mips-elf/undefweak-overflow-n32.d: New test.
	* ld-mips-elf/undefweak-overflow-n64.d: New test.
execl-update-breakpoints.exp: Move whole segment instead of .text section

The test case builds two copies of the program, one with the compile
option "ldflags=-Wl,-Ttext=0x1000000" and the other with the address
changed to 0x2000000.  However, when linking with ld.bfd, the
resulting executables crash early in ld.so on S390 and i386.

Analysis of the crash: The default linker script establishes a certain
order of loadable sections, and the option "-Ttext" effectively splits
these into an "unaffected" lot (everything before .text) and an
"affected" lot.  The affected lot is placed at the given address,
whereas the unaffected lot stays at its default address.  The
unaffected lot starts at an aligned address plus Elf header sizes,
which is good if it is the first LOAD segment (like on AMD64).  But if
the affected lot comes first instead (like on S390 and i386), the PHDR
doesn't fit there and is placed *outside* any LOAD segments.  Then the
PHDR is not mapped when the loader gets control, and the loader runs
into a segmentation fault while trying to access it.

Since we are lucky about the order of segments on AMD64, the test
succeeds there, but the resulting binaries are unusually large -- 2.1M
each, with lots of padding within.

When replacing '-Ttext' by '-Ttext-segment', the linker moves all
segments consistently, the binaries have normal sizes, and the test
case succeeds on all mentioned platforms.

Since old versions of the gold linker don't support '-Ttext-segment',
the patch also adds logic for falling back to '-Ttext'.

gdb/testsuite/ChangeLog:

	* gdb.base/execl-update-breakpoints.exp: Specify the link address
	with '-Ttext-segment' instead of '-Ttext'.  Fall back to '-Ttext'
	if the linker doesn't understand this.
	* MAINTAINERS: Fix my email address.
python/py-infthread.c: Whitespace fixes.

gdb/ChangeLog:

	* python/py-infthread.c: Whitespace fixes.
New python events: infcall, register/memory changed.

gdb/ChangeLog:

	* NEWS: Mention new Python events.
	* Makefile.in (SUBDIR_PYTHON_OBS): Add py-infevents.o.
	(SUBDIR_PYTHON_SRCS): Add py-infevents.c.
	(py-infevents.o): New rule.
	* doc/observer.texi (inferior_call_pre, inferior_call_post)
	(memory_changed, register_changed): New observers.
	* infcall.c (call_function_by_hand): Notify observer before and
	after inferior call.
	* python/py-event.h (inferior_call_kind): New enum.
	(emit_inferior_call_event): New prototype.
	(emit_register_changed_event): New prototype.
	(emit_memory_changed_event): New prototype.
	* python/py-events.h (events_object): New registries
	inferior_call, memory_changed and register_changed.
	* python/py-evts.c (gdbpy_initialize_py_events): Add the
	inferior_call, memory_changed and register_changed registries.
	* python/py-infevents.c: New.
	* python/py-inferior.c (python_on_inferior_call_pre)
	(python_on_inferior_call_post, python_on_register_change)
	(python_on_memory_change): New functions.
	(gdbpy_initialize_inferior): Attach python handler to new
	observers.
	* python/py-infthread.c(gdbpy_create_ptid_object): New.
	(thpy_get_ptid) Use gdbpy_create_ptid_object.
	* python/python-internal.h:
	(gdbpy_create_ptid_object)
	(gdbpy_initialize_inferior_call_pre_event)
	(gdbpy_initialize_inferior_call_post_event)
	(gdbpy_initialize_register_changed_event)
	(gdbpy_initialize_memory_changed_event): New prototypes.
	* python/python.c (_initialize_python): Initialize new events.
	* valops.c (value_assign): Notify register_changed observer.

gdb/doc/ChangeLog:

	* python.texi (Events In Python): Document new events
	InferiorCallPreEvent, InferiorCallPostEvent, MemoryChangedEvent
	and RegisterChangedEvent.

gdb/testsuite/ChangeLog:

	* gdb.python/py-events.py (inferior_call_handler): New.
	(register_changed_handler, memory_changed_handler): New.
	(test_events.invoke): Register new handlers.
	* gdb.python/py-events.exp: Add tests for inferior call,
	memory_changed and register_changed events.
revert previous patch so that I can re-commit with correct author
New python events: inferior call, register/memory changed.

gdb/ChangeLog:

	* NEWS: Mention new Python events.
	* Makefile.in (SUBDIR_PYTHON_OBS): Add py-infevents.o.
	(SUBDIR_PYTHON_SRCS): Add py-infevents.c.
	(py-infevents.o): New rule.
	* doc/observer.texi (inferior_call_pre, inferior_call_post)
	(memory_changed, register_changed): New observers.
	* infcall.c (call_function_by_hand): Notify observer before and
	after inferior call.
	* python/py-event.h (inferior_call_kind): New enum.
	(emit_inferior_call_event): New prototype.
	(emit_register_changed_event): New prototype.
	(emit_memory_changed_event): New prototype.
	* python/py-events.h (events_object): New registries
	inferior_call, memory_changed and register_changed.
	* python/py-evts.c (gdbpy_initialize_py_events): Add the
	inferior_call, memory_changed and register_changed registries.
	* python/py-infevents.c: New.
	* python/py-inferior.c (python_on_inferior_call_pre)
	(python_on_inferior_call_post, python_on_register_change)
	(python_on_memory_change): New functions.
	(gdbpy_initialize_inferior): Attach python handler to new
	observers.
	* python/py-infthread.c(gdbpy_create_ptid_object): New.
	(thpy_get_ptid) Use gdbpy_create_ptid_object.
	* python/python-internal.h:
	(gdbpy_create_ptid_object)
	(gdbpy_initialize_inferior_call_pre_event)
	(gdbpy_initialize_inferior_call_post_event)
	(gdbpy_initialize_register_changed_event)
	(gdbpy_initialize_memory_changed_event): New prototypes.
	* python/python.c (_initialize_python): Initialize new events.
	* valops.c (value_assign): Notify register_changed observer.

gdb/doc/ChangeLog:

	* python.texi (Events In Python): Document new events
	InferiorCallPreEvent, InferiorCallPostEvent, MemoryChangedEvent
	and RegisterChangedEvent.

gdb/testsuite/ChangeLog:

	* gdb.python/py-events.py (inferior_call_handler): New.
	(register_changed_handler, memory_changed_handler): New.
	(test_events.invoke): Register new handlers.
	* gdb.python/py-events.exp: Add tests for inferior call,
	memory_changed and register_changed events.
Fix comment typo

ChangeLog:

	* common/cleanups.c (make_cleanup_dtor): Fix comment typo.
X86-64: Allow copy relocs for building PIE

This patch allows copy relocs for non-GOT pc-relative relocation in PIE.

bfd/

	* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Always
	allow copy relocs for building executables.
	(elf_x86_64_check_relocs): Allow copy relocs for non-GOT
	pc-relative relocation in shared object.
	(elf_x86_64_adjust_dynamic_symbol): Allocate copy relocs for
	PIE.
	(elf_x86_64_relocate_section): Don't copy a pc-relative
	relocation into the output file if the symbol needs copy reloc.

ld/testsuite/

	* ld-x86-64/copyreloc-lib.c: New file.
	* ld-x86-64/copyreloc-main.c: Likewise.
	* ld-x86-64/copyreloc-main.out: Likewise.
	* ld-x86-64/copyreloc-main1.rd: Likewise.
	* ld-x86-64/copyreloc-main2.rd: Likewise.

	* ld-x86-64/x86-64.exp: Run copyreloc tests.
Automatic date update in version.in
Remove remnant of Chill support.

gdb/ChangeLog:

	* valops.c (do_search_struct_field): Remove remnant of Chill support.
	Ref: commit 4c2260aa5c261f7bfb26dcf3aa7c67876720b17e
dwarf2read.c (peek_die_abbrev): Improve error message text.

gdb/ChangeLog:

	* dwarf2read.c (peek_die_abbrev): Improve error message text.
PR symtab/17591

gdb/ChangeLog:

	PR symtab/17591
	* dwarf2read.c (find_slot_in_mapped_hash): Use cp_remove_params
	to strip parameters.
PR symtab/17602

gdb/ChangeLog:

	PR symtab/17602
	* linespec.c (iterate_name_matcher): Fix arguments to symbol_name_cmp.

gdb/testsuite/ChangeLog:

        PR symtab/17602
	* gdb.cp/anon-ns.cc: Move guts of this file to ...
	* gdb.cp/anon-ns-2.cc: ... here.  New file.
	* gdb.cp/anon-ns.exp: Update.
Discard space for relocs against symbols with copy relocs

This patch reverts the change in elf_x86_64_check_relocs and the partial
change in elf_x86_64_adjust_dynamic_symbol.  Instead, we discard space
in PIE for relocs against symbols which turn out to need copy relocs.

	* elf64-x86-64.c (elf_x86_64_check_relocs): Revert the last
	change.
	(elf_x86_64_adjust_dynamic_symbol): Don't check !info->shared
	with ELIMINATE_COPY_RELOCS.
	(elf_x86_64_allocate_dynrelocs): For PIE, discard space for
	relocs against symbols which turn out to need copy relocs.
Remove cplus_specific from general_symbol_info.

This patch reverts the addition of cplus_specific added here:

2010-07-16  Sami Wagiaalla  <swagiaal@redhat.com>

	* symtab.h (symbol_set_demangled_name): Now takes an optional objfile*
	argument.
	(cplus_specific): New struct.
	* symtab.c (symbol_set_demangled_name): Updated.
	Use cplus_specific for cplus symbols.
	(symbol_get_demangled_name): Retrive the name from the cplus_specific
	struct for cplus symbols.
	(symbol_init_language_specific): Set cplus_specific for cplus symbols.
	(symbol_set_names): Pass objfile to symbol_set_demangled_name.
	* symtab.c (symbol_init_cplus_specific): New function.

It was added in anticipation of improved template support:

https://sourceware.org/ml/gdb-patches/2010-05/msg00594.html
https://sourceware.org/ml/gdb-patches/2010-07/msg00284.html

However, minsyms pay the price for this space too.
For my standard benchmark this patch gets back 44MB of memory
when gdb starts.  [There's still ~440MB of memory used
by the demangled ELF symbols of this benchmark, but that's another topic.]

When the improved templated support is added,
I wonder if this can be moved to struct symbol.
Hmmm, we already have a special version of
struct symbol for templates (struct template_symbol).

gdb/ChangeLog:

	* symtab.c (symbol_init_cplus_specific): Delete.
	(symbol_set_demangled_name): Remove special c++ support.
	(symbol_get_demangled_name, symbol_set_language): Ditto.
	* symtab.h (struct cplus_specific): Delete.
	(struct general_symbol_info) <language_specific>: Remove
	cplus_specific.
Check info->executable for symbols which need copy relocs

	* elf64-x86-64.c (elf_x86_64_relocate_section): Check
	info->executable for symbols which need copy relocs.