Commit Graph

93803 Commits

Author SHA1 Message Date
Cary Coutant 43193fe9fc Further improve warnings for relocations referring to discarded sections.
Relocations referring to discarded sections are now treated as errors
instead of warnings.

Also with this patch, we will now print the section group signature and the
object file with the prevailing definition of that group along with the
name of the symbol that the relocation is referring to. This additional
information should be much more useful to anyone trying to track down
the source of such errors.

To do so, we now map each discarded section to the Kept_section info in
the Layout class, and defer the logic that maps a discarded section to
its counterpart in the kept group. This gives us the information we need
to identify the signature symbol given the discarded section, and the
name of the object file that provided the prevailing (i.e., first)
definition of that group.

gold/
	* object.cc (Sized_relobj_file::include_section_group): Store
	reference to Kept_section info for discarded comdat sections
	regardless of size.  Move size checking to map_to_kept_section.
	(Sized_relobj_file::include_linkonce_section): Likewise.
	(Sized_relobj_file::map_to_kept_section): Add section name parameter.
	Insert size checking logic from above functions.
	(Sized_relobj_file::find_kept_section_object): New method.
	(Sized_relobj_file::get_symbol_name): New method.
	* object.h (Sized_relobj_file::map_to_kept_section): Add section_name
	parameter.  Adjust all callers.
	(Sized_relobj_file::find_kept_section_object): New method.
	(Sized_relobj_file::get_symbol_name): New method.
	(Sized_relobj_file::Kept_comdat_section): Replace object and shndx
	fields with sh_size, kept_section, symndx, and is_comdat fields.
	(Sized_relobj_file::set_kept_comdat_section): Replace kept_object
	and kept_shndx parameters with is_comdat, symndx, sh_size, and
	kept_section.
	(Sized_relobj_file::get_kept_comdat_section): Likewise.
	* target-reloc.h (enum Comdat_behavior): Change CB_WARNING to CB_ERROR.
	Adjust all references.
	(issue_undefined_symbol_error): New function template.
	(relocate_section): Pass section name to map_to_kept_section.
	Move discarded section code to new function above.
	* aarch64.cc (Target_aarch64::scan_reloc_section_for_stubs): Move
	declaration for gsym out one level.  Call issue_discarded_error.
	* arm.cc (Target_arm::scan_reloc_section_for_stubs): Likewise.
	* powerpc.cc (Relocate_comdat_behavior): Change CB_WARNING to CB_ERROR.
2018-04-06 22:50:14 -07:00
GDB Administrator ef4bf13b1f Automatic date update in version.in 2018-04-07 00:00:25 +00:00
Tom Tromey 14c88955a1 Change value::contents to be a unique_xmalloc_ptr
This changes value::contents to be a unique_xmalloc_ptr, removing a
small bit of manual memory management.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.c (~value): Update.
	(struct value) <contents>: Now unique_xmalloc_ptr.
	(value_contents_bits_eq, allocate_value_contents)
	(value_contents_raw, value_contents_all_raw)
	(value_contents_for_printing, value_contents_for_printing_const)
	(set_value_enclosing_type): Update.
2018-04-06 15:44:51 -06:00
Tom Tromey 0c7e6dd852 Remove range_s VEC
This changes the "optimized_out" and "unavailable" VECs in struct
value to be std::vectors, and then fixes up all the uses.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.c (range_s): Remove typedef, VEC.
	(struct range): Add operator<.
	(range_lessthan): Remove.
	(ranges_contain): Change type.
	(~value): Update.
	(struct value) <unavailable, optimized_out>: Now std::vector.
	(value_entirely_available)
	(value_entirely_covered_by_range_vector)
	(value_entirely_unavailable, value_entirely_optimized_out):
	Update.
	(insert_into_bit_range_vector): Change argument type.
	(find_first_range_overlap): Likewise.
	(struct ranges_and_idx, value_contents_bits_eq)
	(require_not_optimized_out, require_available): Update.
	(ranges_copy_adjusted): Change argument types.
	(value_optimized_out, value_copy, value_fetch_lazy): Update.
2018-04-06 15:44:51 -06:00
Tom Tromey 2c8331b987 Change value::parent to a value_ref_ptr
This changes value::parent to a value_ref_ptr.  This removes a bit of
manual reference count management.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.c (~value): Update.
	(struct value) <parent>: Now a value_ref_ptr.
	(value_parent, set_value_parent, value_address, value_copy):
	Update.
2018-04-06 15:44:50 -06:00
Tom Tromey 466ce3aea9 Use new and delete for values
This adds a constructor and destructor to struct value, and then
changes value.c to use "new" and "delete".

While doing this I noticed a memory leak -- value_decref was not
freeing value::optimized_out.  This patch fixes this leak.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.c (struct value): Add constructor, destructor, and member
	initializers.
	(allocate_value_lazy, value_decref): Update.
2018-04-06 15:44:50 -06:00
Tom Tromey 062d818d25 Remove value::next and value::released
This patch converts all_values to simply hold a list of references to
values.  Now, there's no need to have a value record whether or not it
is released -- there is only a single reference-counting mechanism for
values.  So, this also removes value::next, value::released, and
value_next.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.c (struct value) <released, next>: Remove.
	(all_values): Now a std::vector.
	(allocate_value_lazy): Update.
	(value_next): Remove.
	(value_mark, value_free_to_mark, release_value)
	(value_release_to_mark): Update.
2018-04-06 15:44:50 -06:00
Tom Tromey a6535de190 Remove free_value_chain
This patch changes value_release_to_mark and fetch_subexp_value to
return a std::vector of value references, rather than relying on the
"next" field that is contained in a struct value.  This makes it
simpler to reason about the returned values, and also allows for the
removal of free_value_chain.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.h (fetch_subexp_value, value_release_to_mark): Update.
	(free_value_chain): Remove.
	* value.c (free_value_chain): Remove.
	(value_release_to_mark): Return a std::vector.
	* ppc-linux-nat.c (num_memory_accesses): Change "chain" to a
	std::vector.
	(check_condition): Update.
	* eval.c (fetch_subexp_value): Change "val_chain" to a
	std::vector.
	* breakpoint.c (update_watchpoint): Update.
	(can_use_hardware_watchpoint): Change "vals" to a std::vector.
2018-04-06 15:44:49 -06:00
Tom Tromey b562120198 Remove free_all_values
free_all_values is unused, so this removes it.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.h (free_all_values): Remove.
	* value.c (free_all_values): Remove.
2018-04-06 15:44:49 -06:00
Tom Tromey 4d0266a0e0 Change value history to use value_ref_ptr
This simplifies the value history implementation by replacing the
current data structure with a std::vector, and by making the value
history simply hold a reference to each value.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.c (VALUE_HISTORY_CHUNK, struct value_history_chunk)
	(value_history_chain, value_history_count): Remove.
	(value_history): New global.
	(record_latest_value, access_value_history, show_values)
	(preserve_values): Update.
2018-04-06 15:44:48 -06:00
Tom Tromey b4d61099ba Change varobj to use value_ref_ptr
This changes varobj to use value_ref_ptr, allowing the removal of some
manual reference count management.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* varobj.h (struct varobj) <value>: Now a value_ref_ptr.
	* varobj.c (varobj_set_display_format, varobj_set_value)
	(install_default_visualizer, construct_visualizer)
	(install_new_value, ~varobj, varobj_get_value_type)
	(my_value_of_variable, varobj_editable_p): Update.
	* c-varobj.c (c_describe_child, c_value_of_variable)
	(cplus_number_of_children, cplus_describe_child): Update.
	* ada-varobj.c (ada_number_of_children, ada_name_of_child)
	(ada_path_expr_of_child, ada_value_of_child, ada_type_of_child)
	(ada_value_of_variable, ada_value_is_changeable_p): Update.
2018-04-06 15:44:48 -06:00
Tom Tromey 9b5587295b Change last_examine_value to value_ref_ptr
This patch removes some manual reference count manipulation by
changing last_examine_value to be a value_ref_ptr and then updating
the users.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* printcmd.c (last_examine_address): Change type to
	value_ref_ptr.
	(do_examine, x_command): Update.
2018-04-06 15:44:47 -06:00
Tom Tromey 850645cfe8 Change breakpoints to use value_ref_ptr
Now that value_ref_ptr exists, it is possible to simplify breakpoint
and bpstat memory management by using a value_ref_ptr rather than
manually handling the reference counts.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.c (release_value): Update.
	* breakpoint.h (struct watchpoint) <val>: Now a value_ref_ptr.
	(struct bpstats) <val>: Now a value_ref_ptr.
	* breakpoint.c (update_watchpoint, breakpoint_init_inferior)
	(~bpstats, bpstats, bpstat_clear_actions, watchpoint_check)
	(~watchpoint, print_it_watchpoint, watch_command_1)
	(invalidate_bp_value_on_memory_change): Update.
2018-04-06 15:44:47 -06:00
Tom Tromey 22bc8444e6 Introduce a gdb_ref_ptr specialization for struct value
struct value is internally reference counted and so, while it also has
some ownership rules unique to it, it makes sense to use a gdb_ref_ptr
when managing it automatically.

This patch removes the existing unique_ptr specialization in favor of
a reference-counted pointer.  It also introduces two other
clarifications:

1. Rename value_free to value_decref, which I think is more in line
   with what the function actually does; and

2. Change release_value to return a gdb_ref_ptr.  This change allows
   us to remove the confusing release_value_or_incref function,
   primarily by making it much simpler to reason about the result of
   release_value.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* varobj.c (varobj_clear_saved_item)
	(update_dynamic_varobj_children, install_new_value, ~varobj):
	Update.
	* value.h (value_incref): Move declaration earlier.
	(value_decref): Rename from value_free.
	(struct value_ref_policy): New.
	(value_ref_ptr): New typedef.
	(struct value_deleter): Remove.
	(gdb_value_up): Remove typedef.
	(release_value): Change return type.
	(release_value_or_incref): Remove.
	* value.c (set_value_parent): Update.
	(value_incref): Change return type.
	(value_decref): Rename from value_free.
	(value_free_to_mark, free_all_values, free_value_chain): Update.
	(release_value): Return value_ref_ptr.
	(release_value_or_incref): Remove.
	(record_latest_value, set_internalvar, clear_internalvar):
	Update.
	* stack.c (info_frame_command): Don't call value_free.
	* python/py-value.c (valpy_dealloc, valpy_new)
	(value_to_value_object): Update.
	* printcmd.c (do_examine): Update.
	* opencl-lang.c (lval_func_free_closure): Update.
	* mi/mi-main.c (register_changed_p): Don't call value_free.
	* mep-tdep.c (mep_frame_prev_register): Don't call value_free.
	* m88k-tdep.c (m88k_frame_prev_register): Don't call value_free.
	* m68hc11-tdep.c (m68hc11_frame_prev_register): Don't call
	value_free.
	* guile/scm-value.c (vlscm_free_value_smob)
	(vlscm_scm_from_value): Update.
	* frame.c (frame_register_unwind, frame_unwind_register_signed)
	(frame_unwind_register_unsigned, get_frame_register_bytes)
	(put_frame_register_bytes): Don't call value_free.
	* findvar.c (address_from_register): Don't call value_free.
	* dwarf2read.c (dwarf2_compute_name): Don't call value_free.
	* dwarf2loc.c (entry_data_value_free_closure)
	(value_of_dwarf_reg_entry, free_pieced_value_closure)
	(dwarf2_evaluate_loc_desc_full): Update.
	* breakpoint.c (update_watchpoint, breakpoint_init_inferior)
	(~bpstats, bpstats, bpstat_clear_actions, watchpoint_check)
	(~watchpoint, watch_command_1)
	(invalidate_bp_value_on_memory_change): Update.
	* alpha-tdep.c (alpha_register_to_value): Don't call value_free.
2018-04-06 15:44:46 -06:00
Simon Marchi 7f8a5d38ed Add -Wno-error=deprecated-register to gdb build flags
As shown in PR 23022, building with clang-6 and Python 2 trips on the
fact that the Python 2 headers use the "register" keyword:

/usr/include/python2.7/unicodeobject.h:534:5: error: 'register' storage class specifier is deprecated and incompatible with C++17 [-Werror,-Wdeprecated-register]
    register PyObject *obj,     /* Object */
    ^~~~~~~~~

This patch adds -Wno-error=deprecated-register to our flags, so that we can
still see this class of warnings, but they don't cause a build failure.

gdb/ChangeLog:

	PR gdb/23022
	* warning.m4: Add -Wno-error=deprecated-register.
	* configure: Re-generate.
2018-04-06 16:11:51 -04:00
Tom Tromey 2008a0dbe3 Display all DWARF 5 language names
I happened to notice that objdump was not printing "Rust" when showing
the DW_AT_language for a CU:

    <10>   DW_AT_language    : 28	(Unknown: 1c)

This patch adds all the new language constants from DWARF 5 to
binutils/dwarf.c.

2018-04-06  Tom Tromey  <tom@tromey.com>

	* dwarf.c (read_and_display_attr_value): Add missing DW_LANG
	constants from DWARF 5.
2018-04-06 10:58:34 -06:00
H.J. Lu a6fd92b057 x86-64: Don't mask out R_X86_64_converted_reloc_bit
R_X86_64_converted_reloc_bit is set in elf_x86_64_convert_load_reloc
which is called from elf_x86_64_check_relocs.  Since it is used only
internally by linker, there is no need to mask it out in
elf_x86_64_info_to_howto.

	* elf64-x86-64.c (elf_x86_64_info_to_howto): Don't mask out
	R_X86_64_converted_reloc_bit.
2018-04-06 05:06:21 -07:00
GDB Administrator 85d8342bee Automatic date update in version.in 2018-04-06 00:00:46 +00:00
H.J. Lu 3cba8b6c93 Use dlsym to check if libdl is needed for plugin
config/plugins.m4 has

 if test "$plugins" = "yes"; then
    AC_SEARCH_LIBS([dlopen], [dl])
  fi

Plugin uses dlsym, but libasan.so only intercepts dlopen, not dlsym:

[hjl@gnu-tools-1 binutils-text]$ nm -D /lib64/libasan.so.4| grep " dl"
0000000000038580 W dlclose
                 U dl_iterate_phdr
000000000004dc50 W dlopen
                 U dlsym
                 U dlvsym
[hjl@gnu-tools-1 binutils-text]$

Testing dlopen for libdl leads to false negative when -fsanitize=address
is used.  It results in link failure:

../bfd/.libs/libbfd.a(plugin.o): undefined reference to symbol 'dlsym@@GLIBC_2.16'

dlsym should be used to check if libdl is needed for plugin.

bfd/

	PR gas/22318
	* configure: Regenerated.

binutils/

	PR gas/22318
	* configure: Regenerated.

gas/

	PR gas/22318
	* configure: Regenerated.

gprof/

	PR gas/22318
	* configure: Regenerated.

ld/

	PR gas/22318
	* configure: Regenerated.
2018-04-05 15:31:53 -07:00
H.J. Lu 552d4da417 config: Sync with GCC
Sync with GCC
	2018-04-05  H.J. Lu  <hongjiu.lu@intel.com>

	PR gas/22318
	* plugins.m4 (AC_PLUGINS): Use dlsym to check if libdl is needed.

	2018-02-14  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

	PR target/84148
	* cet.m4: Check if target support multi-byte NOPS (SSE).
2018-04-05 15:22:13 -07:00
Cary Coutant c54b27d1c0 Improve warnings for relocations referring to discarded sections.
gold/
	* target-reloc.h (relocate_section): Add local symbol index or global
	symbol name to warning about relocation that refers to discarded
	section.
2018-04-05 14:51:45 -07:00
Maciej W. Rozycki 2d8c1a2318 MIPS/binutils/testsuite: Fix `.dc.l' typo in `strip-13mips64.s'
Fix a typo: `.dc.w' -> `.dc.l' in `strip-13mips64.s', correcting a bug
from commit 2f8ceb3899 ("binutils/testsuite: Support REL and MIPS64
reloc formats with `strip-13'").  For relocation format correctness only
as there is no observable change in test results due to the lack of
connection between the second relocation entry affected and the examined
error message produced.

	binutils/
	* testsuite/binutils-all/strip-13mips64.s: Use `.dc.l' rather
	than `.dc.w' in second relocation.
2018-04-05 22:37:17 +01:00
Cary Coutant 494e49c985 Revert previous patch and apply revised patch.
Revert:

2018-04-05  James Cowgill  <james.cowgill@mips.com>

	PR gold/22770
	* mips.cc (Mips_got_info::record_got_page_entry): Fetch existing
	page entries for the object's GOT.

Apply:

	PR gold/22770
	* mips.cc (Mips_got_info::record_got_page_entry): Don't insert
	Got_page_entry for object's GOT.
	(Mips_got_info::add_got_page_entries): Add all pages from from's GOT.
	Rename to add_got_page_count.
	(Got_page_entry): Remove num_pages.
2018-04-05 09:45:07 -07:00
James Cowgill 67faf1f4c2 MIPS: Fix GOT page counter in multi-got links
The record_got_page_entry function records and updates the maximum
number of GOT page entries which may be required by an object. In the
case where an existing GOT page entry was expanded, only the entry
belonging to output GOT would have its page count updated. This leaves
the entry belonging to the object GOT with the num_pages count of 1 it
was originally initialized with. Later on when GOTs are being merged in a
multi-got link, this causes the value of entry->num_pages in
add_got_page_entries to always be 1 and underestimates the number of pages
required for the new entry. This in turn leads to an assertion failure in
get_got_page_offset where we run out of pages.

Fix by obtaining the object's GOT entry unconditionally and not just
the first time it gets created. Now that entry2 is always valid, remove
the useless NULL checks.

gold/
	PR gold/22770
	* mips.cc (Mips_got_info::record_got_page_entry): Fetch existing
	page entries for the object's GOT.
2018-04-05 08:47:53 -07:00
Nick Clifton 043e9508be Stop the IA64 linker from removing unwind tables when garbage collecting.
PR 23030
	* emulparams/elf64_ia64.sh (OTHER_READONLY_SECTIONS): Make sure
	that the .IA_64.unwind_info and .IA_64.unwind sections are not
	subject to garbage collection.
2018-04-05 14:44:05 +01:00
Tom Tromey 8a76bd3ba4 Remove unnecessary include from linespec.h
linespec.h was inculding vec.h, but doesn't expose any VECs.
So, this include can be removed.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* linespec.h: Remove include of "vec.h".
2018-04-05 07:39:37 -06:00
Tom Tromey 8e8d776ead Remove typep and VEC(typep) from linespec.c
This removes VEC(typep) from linespec.c in favor of std::vector.  It
also removes the "typep" typedef.  This change allowed the removal of
some cleanups.

I believe the previous cleanup code in find_superclass_methods could
result in a memory leak, so this patch is an improvement in that way
as well.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* linespec.c (typep): Remove typedef.
	(find_methods, find_superclass_methods): Take a std::vector.
	(find_method): Use std::vector.
2018-04-05 07:39:37 -06:00
Tom Tromey 9b2f85815c More use of std::vector in linespec.c
This changes some spots in linespec.c to take a std::vector.  This
patch spilled out to objc-lang.c a bit as well.  This change allows
for the removal of some cleanups.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* utils.c (compare_strings): Remove.
	* utils.h (compare_strings): Remove.
	* objc-lang.h (find_imps): Update.
	* objc-lang.c (find_methods): Take a std::vector.
	(uniquify_strings, find_imps): Likewise.
	* linespec.c (find_methods): Take a std::vector.
	(decode_objc): Use std::vector.
	(add_all_symbol_names_from_pspace, find_superclass_methods): Take
	a std::vector.
	(find_method, find_function_symbols): Use std::vector.
2018-04-05 07:39:37 -06:00
Tom Tromey 459a2e4ccf Change streq to return bool
I wanted to use streq with std::unique in another (upcoming) patch in
this seres, so I changed it to return bool.  To my surprise, this lead
to regressions.  The cause turned out to be that streq was used as an
htab callback -- by casting it to the correct function type.  This
sort of cast is invalid, so this patch adds a variant which is
directly suitable for use by htab.  (Note that I did not add an
overload, as I could not get that to work with template deduction in
the other patch.)

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* completer.c (completion_tracker::completion_tracker): Remove
	cast.
	(completion_tracker::discard_completions): Likewise.
	* breakpoint.c (ambiguous_names_p): Remove cast.
	* ada-lang.c (_initialize_ada_language): Remove cast.
	* utils.h (streq): Update.
	(streq_hash): Add new declaration.
	* utils.c (streq): Return bool.
	(streq_hash): New function.
2018-04-05 07:39:36 -06:00
Tom Tromey 9be2c17a90 Remove a string copy from event_location_to_sals
The use of "const" showed that a string copy in event_location_to_sals
was unnecessary.  This patch removes it.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* linespec.c (event_location_to_sals) <case ADDRESS_LOCATION>:
	Remove a string copy.
2018-04-05 07:39:36 -06:00
Tom Tromey f73c6ece78 Have filter_results take a std::vector
This chagnes filter_results to take a std::vector, allowing the
removal of some cleanups in its callers.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* linespec.c (filter_results): Use std::vector.
	(decode_line_2, decode_line_full): Update.
2018-04-05 07:39:35 -06:00
Tom Tromey 53a0f8a250 Return std::string from canonical_to_fullform
This changes canonical_to_fullform to return a std::string, and
changes decode_line_2 to use std::vector.  This allows for the removal
of some cleanups.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* linespec.c (canonical_to_fullform): Return std::string.
	(filter_results): Update.
	(struct decode_line_2_item): Add constructor.
	<fullform, displayform>: Now std::string.
	(decode_line_2_compare_items): Now a std::sort comparator.
	(decode_line_2): Update.
2018-04-05 07:39:35 -06:00
Tom Tromey a5b5adf529 Make copy_token_string return unique_xmalloc_ptr
This changes copy_token_string to return a unique_xmalloc_ptr, which
allows the removal of some cleanups.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* linespec.c (copy_token_string): Return a unique_xmalloc_ptr.
	(unexpected_linespec_error): Update.
	(linespec_parse_basic, parse_linespec): Update.
2018-04-05 07:39:34 -06:00
Tom Tromey 6a307fc5f5 Fix some indentation in linespec.c
This removes some leftover comments and fixes the indentation in a
couple of spots in linespec.c.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* linespec.c (linespec_parse_basic): Reindent.
2018-04-05 07:39:34 -06:00
Tom Tromey 41c1efc614 Remove some cleanups from search_minsyms_for_name
This changes struct collect_minsyms to use a std::vector, which
enables the removal of a cleanup from search_minsyms_for_name.  This
also changes iterate_over_minimal_symbols to take a
gdb::function_view, which makes a function in linespec.c more
type-safe.

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* minsyms.h (iterate_over_minimal_symbols): Update.
	* minsyms.c (iterate_over_minimal_symbols): Take a
	gdb::function_view.
	* linespec.c (struct collect_minsyms): Remove.
	(compare_msyms): Now a std::sort comparator.
	(add_minsym): Add parameters.
	(search_minsyms_for_name): Update.  Use std::vector.
2018-04-05 07:39:33 -06:00
Maciej W. Rozycki 65bd20451f binutils/testsuite: Tighten the error message check with `strip-13'
Avoid false positives and actually verify both that an `unsupported
relocation type 0x8f' message is produced and that no other message is,
except for the final `bad value', in the `strip-13' test.  This ensures
that it is a relocation processing error and not a different issue that
has caused `strip' to terminate unsuccessfully, and that the number
representing the unsupported relocation has not been clobbered.

	binutils/
	* testsuite/binutils-all/strip-13.d: Also expect `unsupported
	relocation type 0x8f' error message.
2018-04-05 13:08:35 +01:00
Maciej W. Rozycki 2f8ceb3899 binutils/testsuite: Support REL and MIPS64 reloc formats with `strip-13'
Add source variants for the `strip-13' test that produce relocations in
the REL and MIPS64 formats, fixing a failure for the `mips64el-openbsd'
target.  This also corrects output for `i*86-*', `i960-*', `m6812-*' and
`m68hc12-*', o32 `mips*-*', and `score*-*' targets, which however does
not show up as a test result change due to lax error message matching
causing `bad value' previously produced by `strip' as a result of input
file rejection to be accepted as a test pass.

For `m6811-*' aka `m68hc11-*' targets this causes a phantom regression,
because they use 16-bit addressing and therefore `.dc.a' emits 16-bit
quantities causing relocation data constructed in assembly not to be as
expected.  Previously input was rejected by `strip' with a `bad value'
message and now it is accepted, however due to the relocation data error
the relocation number is not one of the unsupported ones and the tool
completes successfully, which scores as a test failure.

Disable the test case for `m6811-*' and `m68hc11-*' targets then, as it
is a test case bug rather than a problem with the relevant backend.  A
separate change to the test case is required to correct this problem, at
which point the test case can be enabled for the affected targets.

	binutils/
	* testsuite/binutils-all/strip-13.s: Rename to...
	* testsuite/binutils-all/strip-13rela.s: ... this.
	* testsuite/binutils-all/strip-13rel.s: New test source.
	* testsuite/binutils-all/strip-13mips64.s: New test source.
	* testsuite/binutils-all/strip-13.d: Remove `arm-*', `d10v-*',
	`dlx-*' and `xgate-*' from `not-target' list.  Add `m6811-*' and
	`m68hc11-*' to `not-target' list.
	* testsuite/binutils-all/objcopy.exp: Switch between sources for
	`strip-13'.
2018-04-05 13:08:35 +01:00
Maciej W. Rozycki aad7be454b binutils/testsuite: Enable `strip-13' test for `hppa*-*'
Based on relocations defined in include/elf/*.h files we have relocation
numbers: 143, 159, 214 and 215 currently not used by any of our ELF
targets.  Use 143 then instead of 241 to enable the `strip-13' test for
`hppa*-*' targets.  It has a side effect with some targets of verifying
that unused relocations whose numbers are below the respective R_*_max
value are handled correctly.

	binutils/
	* testsuite/binutils-all/strip-13.s: Use 143 (0x8f) rather than
	241 (0xf1) for the relocation number and RELA addend.
	* testsuite/binutils-all/strip-13.d: Remove `hppa*-*' from the
	`not-target' list.
2018-04-05 13:08:35 +01:00
GDB Administrator e778be0dd1 Automatic date update in version.in 2018-04-05 00:00:24 +00:00
Alan Modra 544838989a [GOLD] Make powerpc64 .branch_lt relro
Better security beats better placement for code optimization.

	* powerpc.cc (Target_powerpc::make_brlt_section): Make .branch_lt relro.
2018-04-05 08:26:10 +09:30
Alan Modra 0e8452bb22 elf-hppa.h warning fix
* elf-hppa.h (elf_hppa_info_to_howto): Init howto to NULL.
	(elf_hppa_info_to_howto_rel): Likewise.
2018-04-05 08:24:15 +09:30
John David Anglin 89f60df20b * binutils/MAINTAINERS: Update e-mail address. 2018-04-04 18:29:17 -04:00
H.J. Lu caf0678c84 i386: Clear vex instead of vex.evex
"vex" has many fields to control how to decode an instruction.  Clear
all fields in "vex" before decoding an instruction to avoid using values
left from the previous instruction.

gas/

	PR binutils/23025
	* testsuite/gas/i386/prefix.s: Add tests for vcvtpd2dq with
	VEX and EVEX prefixes.
	* testsuite/gas/i386/prefix.d: Updated.

opcodes/

	PR binutils/23025
	* i386-dis.c (get_valid_dis386): Don't set vex.prefix nor vex.w
	to 0.
	(print_insn): Clear vex instead of vex.evex.
2018-04-04 04:36:44 -07:00
Eric Botcazou 142b7a144b Add blurb about linker changes for Cygwin and Mingw targets. 2018-04-04 12:18:09 +02:00
Eric Botcazou 9d8e8f445c Speed up direct linking with DLLs on Windows (2/2).
This patch deals with the generation of the import library on the fly.

The implementation is inefficient because the linker makes a lot of
calls to realloc and memmove when importing the symbols in order to
maintain a sorted list of symbols.

This is fixable by relying on the fact that, for every linked DLL,
the list of symbols it exports is already sorted so you can import
them en masse once you have found the insertion point.

ld/
	* deffile.h (def_file_add_import_from): Declare.
	(def_file_add_import_at): Likewise.
	* deffilep.y (fill_in_import): New function extracted from...
	(def_file_add_import): ...here.  Call it.
	(def_file_add_import_from): New function.
	(def_file_add_import_at): Likewise.
	* pe-dll.c (pe_implied_import_dll): Use an optimized version of the
	insertion loop for imported symbols if possible.
2018-04-04 12:13:05 +02:00
Eric Botcazou 317ff0084b Speed up direct linking with DLLs on Windows (1/2).
This patch deals with the auto-import feature.  There are 2 versions
of this feature: the original one, which was piggybacked on the OS
loader with an optional help from the runtime (--enable-auto-import
--enable-runtime-pseudo-reloc-v1) and is still the one mostly
documented in the sources and manual; the enhanced one by Kai Tietz,
which is entirely piggybacked on the runtime (--enable-auto-import
--enable-runtime-pseudo-reloc-v2) and is the default for Mingw and
Cygwin nowadays.

The implementation is inefficient because of pe[p]_find_data_imports:
for every undefined symbol, the function walks the entire set of
relocations for all the input files and does a direct name comparison
for each of them.

This is easily fixable by using a hash-based map for v1 and a simple
hash table for v2.  This patch leaves v1 alone and only changes v2.
It also factors out pe[p]_find_data_imports into a common function,
removes old cruft left and right, and attempts to better separate
the implementations of v1 and v2 in the code.

ld/
	* emultempl/pe.em (U_SIZE): Delete.
	(pe_data_import_dll): Likewise.
	(make_import_fixup): Return void, take 4th parameter and pass it down
	in call to pe_create_import_fixup.
	(pe_find_data_imports): Move to...
	(gld_${EMULATION_NAME}_after_open): Run the stdcall fixup pass after
	the auto-import pass and add a guard before running the latter.
	* emultempl/pep.em (U_SIZE): Delete.
	(pep_data_import_dll): Likewise.
	(make_import_fixup): Return void, take 4th parameter and pass it down
	in call to pe_create_import_fixup.
	(pep_find_data_imports): Move to...
	(gld_${EMULATION_NAME}_after_open): Run the stdcall fixup pass after
	the auto-import pass and add a guard before running the latter.
	* pe-dll.c (runtime_pseudp_reloc_v2_init): Change type to bfd_boolean.
	(pe_walk_relocs_of_symbol): Rename into...
	(pe_walk_relocs): ...this.  Add 2 more parameters,4th parameter to the
	callback prototype and pass 4th parameter in calls to the callback.
	If the import hash table is present, invoke the callback on the reloc
	if the symbol name is in the table.
	(pe_find_data_imports): ...here.  Take 2 parameters.  Build an import
	hash table for the pseudo-relocation support version 2.  When it is
	built, walk the relocations only once at the end; when it is not, do
	not build a fixup when the symbol isn't part of an import table.
	Issue the associated warning only after a first fixup is built.
	(tmp_seq2): Delete.
	(make_singleton_name_imp): Likewise.
	(make_import_fixup_mark): Return const char * and a stable string.
	(make_import_fixup_entry): Do not deal with the pseudo-relocation
	support version 2.
	(make_runtime_pseudo_reloc): Factor out code and fix formatting.
	(pe_create_import_fixup): Add 5th parameter.  Clearly separate the
	pseudo-relocation support version 2 from the rest.  Fix formatting.
	* pe-dll.h (pe_walk_relocs_of_symbol): Delete.
	(pe_find_data_imports): Declare.
	(pe_create_import_fixup): Add 5th parameter.
	* pep-dll.c (pe_data_import_dll): Delete.
	(pe_find_data_imports): Define.
	(pe_walk_relocs_of_symbol): Delete.
	* pep-dll.h (pep_walk_relocs_of_symbol): Delete.
	(pep_find_data_imports): Declare.
	(pep_create_import_fixup): Add 5th parameter.
	* ld.texinfo (--enable-auto-import): Adjust to new implementation.
2018-04-04 12:07:50 +02:00
Nick Clifton 4fb0d2b912 Update Spanish translations for ld/ opcodes/ and gold/ sub-directories 2018-04-04 09:00:18 +01:00
Nick Clifton f1ca0d6d8b Retire Jason Eckhardt as i860 maintainer.
* MAINTAINERS: Move Jason Eckhardt to past maintainers section.
2018-04-04 08:35:19 +01:00
Maciej W. Rozycki 8ee55178c2 PR binutils/22875: HPPA/ELF: Also fail with relocation placeholders
Do not consider R_PARISC_UNIMPLEMENTED placeholder relocation entries of
the `elf_hppa_howto_table' table valid in `info_to_howto' HPPA handlers.
Instead issue an unsupported relocation type error and return a NULL
howto as with relocations whose number is R_PARISC_UNIMPLEMENTED or
beyond.

	bfd/
	* elf-hppa.h (elf_hppa_info_to_howto): Also return
	unsuccessfully for unimplemented relocations.
	(elf_hppa_info_to_howto_rel): Likewise.
2018-04-04 02:00:49 +01:00
Maciej W. Rozycki 5d7c8b8048 PR binutils/22875: i860/ELF: Report unsupported relocation types
Complement commit f3185997ac ("PR 22875: Stop strip corrupting unknown
relocs"), <https://sourceware.org/ml/binutils/2018-02/msg00445.html>,
and also set the `bfd_error_bad_value' error and report an unsupported
relocation type if a howto lookup fails with the i860 backend, fixing a
confusing `no error' error message and removing a binutils test failure:

failed with: <.../binutils/strip-new: tmpdir/bintest.o: no error>, expected: <.* bad value>
.../binutils/strip-new: tmpdir/bintest.o: no error
FAIL: binutils-all/strip-13

with the `i860-stardent-elf' target.

	bfd/
	* elf32-i860.c (lookup_howto): Add `abfd' parameter.  Set the
	`bfd_error_bad_value' error and call `_bfd_error_handler' on a
	howto lookup failure.
	(elf32_i860_reloc_type_lookup): Adjust `lookup_howto' call
	accordingly.
	(elf32_i860_info_to_howto_rela): Likewise.
	(elf32_i860_relocate_splitn): Likewise.
	(elf32_i860_relocate_pc16): Likewise.
	(elf32_i860_relocate_pc26): Likewise.
	(elf32_i860_relocate_section): Likewise.
2018-04-04 02:00:49 +01:00