RISC-V: Add R_RISCV_DELETE, which marks bytes for deletion

We currently delete bytes by shifting an entire BFD backwards to
overwrite the bytes we no longer need.  The result is that relaxing a
BFD is quadratic time.

This patch adds an additional relocation that specifies a byte range
that will be deleted from the final object file, and adds a relaxation
pass (between the existing passes that delete bytes and the alignment
pass) that actually deletes the bytes.  Note that deletion is still
quadratic time, and nothing uses R_RISCV_DELETE yet.

I've been meaning to go convert all the other relaxations to use
R_RISCV_DELETE and then make it faster, but this patch has been sitting
around for months so it looks like that won't happen for a bit.  The
PCREL->GPREL relaxation that comes next uses this, and since we've been
using these two patches out of tree since I wrote them months ago I
figure it's better to just get them in now.  I (or someone else :)) can
convert all the relocations later...

R_RISCV_DELETE will never be emitted into ELF objects, so therefor isn't
exposed to the rest of binutils.  As such, we're not considering this as
part of the ABI.

bfd/ChangeLog

2017-10-19  Palmer Dabbelt  <palmer@dabbelt.com>

        * elfnn-riscv (R_RISCV_DELETE): New define.
        (_bfd_riscv_relax_delete): New function.
        (perform_relocation): Handle R_RISCV_DELETE.
        (_bfd_riscv_relax_section): Likewise.

ld/ChangeLog

2017-10-19  Palmer Dabbelt  <palmer@dabbelt.com>

        * emultempl/riscvelf.em (riscv_elf_before_allocation): Add a
        third relaxation pass.

Fix the AVR assembler so that it will correctly issue warnings about skipped instructions even if subsections are used.

PR 21621
* config/tc-avr.h (struct avr_frag_data): Add prev_opcode field.
(TC_FRAG_INIT): Define.
(avr_frag_init): Add prototype.
* config/tc-avr.c (avr_frag_init): New function.
(avr_operands): Replace static local 'prev' variable with
prev_opcode field in current frag.
* testsuite/gas/avr/pr21621.s: New test source file.
* testsuite/gas/avr/pr21621.d: New test driver file.
* testsuite/gas/avr/pr21621.s: New test error output file.

Fix inferior deadlock with "target remote | CMD"

Comparing test results between

  --target_board=native-gdbserver
  --target_board=native-stdio-gdbserver

I noticed that gdb.base/bigcore.exp is failing with native-stdio-gdbserver:

  Running src/gdb/testsuite/gdb.base/bigcore.exp ...
  FAIL: gdb.base/bigcore.exp: continue (timeout)
  ...

The problem is that:

  1. When debugging with "target remote | CMD", the inferior's
     stdout/stderr streams are connected to a pipe.

  2. The bigcore.c program prints a lot to the screen before it
     reaches the breakpoint location that the "continue" shown above
     wants to reach.

  3. GDB is not flushing the inferior's output pipe while the inferior
     is running.

  4. The pipe becomes full.

  5. The inferior thus deadlocks.

The bug is #3 above, which is what this commit fixes.  A new test is
added, that specifically exercises this scenario.  The test fails
before the fix, and passes after, and gdb.base/bigcore.exp also starts
passing.

gdb/ChangeLog:
2017-10-19  Pedro Alves  <palves@redhat.com>

* ser-base.c (ser_base_read_error_fd): Delete the file handler if
async.
(handle_error_fd): New function.
(ser_base_async): Add/delete an event loop file handler for
error_fd.

gdb/testsuite/ChangeLog:
2017-10-19  Pedro Alves  <palves@redhat.com>

* gdb.base/long-inferior-output.c: New file.
* gdb.base/long-inferior-output.exp: New file.

xml_fetch_content_from_file: Read in whole file in one go

There doesn't seem to be a good reason we're reading the file one
chunk at a time.

gdb/ChangeLog:
2017-10-19  Pedro Alves  <palves@redhat.com>

* xml-support.c (xml_fetch_content_from_file): Don't read in
chunks.  Instead use fseek to determine the file's size, and read
it in one go.

tilegx: Check bfd_link_executable for TLS check

Copied from x86, check bfd_link_executable, instead of bfd_link_pic,
for TLS transition check.  Not sure if it works correctly.  All usages
of bfd_link_pic should be audited.

PR ld/22263
* elfxx-tilegx.c (tilegx_elf_tls_transition): Replace
bfd_link_pic with !bfd_link_executable, !bfd_link_pic with
bfd_link_executable for TLS check.
(tilegx_elf_check_relocs): Likewise.
(allocate_dynrelocs): Likewise.
(tilegx_elf_relocate_section): Likewise.

tilepro: Check bfd_link_executable for TLS check

Copied from x86, check bfd_link_executable, instead of bfd_link_pic,
for TLS transition check.  Not sure if it works correctly.  All usages
of bfd_link_pic should be audited.

PR ld/22263
* elf32-tilepro.c (tilepro_elf_tls_transition): Replace
bfd_link_pic with !bfd_link_executable, !bfd_link_pic with
bfd_link_executable for TLS check.
(tilepro_elf_check_relocs): Likewise.
(allocate_dynrelocs): Likewise.
(tilepro_elf_relocate_section): Likewise.

sparc: Check bfd_link_executable for TLS check

Copied from x86, check bfd_link_executable, instead of bfd_link_pic,
for TLS transition check.  Not sure if it works correctly.  All usages
of bfd_link_pic should be audited.

PR ld/22263
* elfxx-sparc.c (sparc_elf_tls_transition): Replace
bfd_link_pic with !bfd_link_executable, !bfd_link_pic with
bfd_link_executable for TLS check.
(_bfd_sparc_elf_check_relocs): Likewise.
(allocate_dynrelocs): Likewise.
(_bfd_sparc_elf_relocate_section): Likewise.

Fix fill-1 testcase

This fixes various issues with the fill-1 testcase causing fails on a
couple of targets.

gas/ChangeLog:

2017-10-19  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* testsuite/gas/all/fill-1.s: Use normal labels.  Change .text to
.data. Pick different values.  Use .dc.w instead of .word.
* testsuite/gas/all/fill-1.d: New objdump output check.
* testsuite/gas/all/gas.exp: Use run_dump_test to execute fill-1
testcase.

Automatic date update in version.in

tile: Mark __tls_get_addr in gc_mark_hook

TLS_GD_CALL relocations implicitly reference __tls_get_addr.  Since
elf_gc_mark_hook is called before check_relocs now, we need to call
_bfd_generic_link_add_one_symbol to mark __tls_get_addr for garbage
collection.

* elf32-tilepro.c (tilepro_elf_gc_mark_hook): Call
_bfd_generic_link_add_one_symbol to mark __tls_get_addr.
* elfxx-tilegx.c (tilegx_elf_gc_mark_hook): Likewise.

RISC-V: Mark unsupported gas testcases

There are individual comments that explain why each test isn't
supported, but the vast majority of them are due to RISC-V's aggressive
linker relaxation.  The SLEB test cases should eventually be supported,
but the remaining ones probably won't ever be.

2017-10-18  Palmer Dabbelt  <palmer@dabbelt.com>

        * testsuite/gas/all/align.d: Mark as unsupported on RISC-V.
        testsuite/gas/all/relax.d: Likewise.
        testsuite/gas/all/sleb128-2.d: Likewise.
        testsuite/gas/all/sleb128-4.d: Likewise.
        testsuite/gas/all/sleb128-5.d: Likewise.
        testsuite/gas/all/sleb128-7.d: Likewise.
        testsuite/gas/elf/section11.d: Likewise.
        testsuite/gas/all/gas.exp (diff1.s): Likewise.

Canonicalize conversion operators

Consider a conversion operator such as:

operator foo const* const* ();

There are two small parser problems, highlighted by this test:

(gdb) p operator foo const* const*
There is no field named operatorfoo const* const *

GDB is looking up the symbol "operatorfoo const* const*" -- it is missing a
space between the keyword "operator" and the type name "foo const* const*".

Additionally, this input of the user-defined type needs to be canonicalized
so that different "spellings" of the type are recognized:

(gdb) p operator const foo* const *
There is no field named operator const foo* const *

gdb/ChangeLog:

* c-exp.y (oper): Canonicalize conversion operators of user-defined
types.
Add whitespace to front of type name.

gdb/testsuite/ChangeLog:

* gdb.cp/cpexprs.cc (base) <operator fluff const* const*>: New
method.
(main): Call it.
* gdb.cp/cpexprs.exp: Add new conversion operator to test matrix.
Add additional user-defined conversion operator tests.

Issue complaint instead of assert for invalid/unhandled DW_AT_accessibility

A previous patch called gdb_assert_not_reached whenever reading
the accessibility of a nested typedef definition. Wisely, Pedro has asked me
not do this.

This patch changes the previous one so that it issues a complaint instead.

gdb/ChangeLog:

* dwarf2read.c (dwarf2_add_typedef): Issue a complaint on unhandled
DW_AT_accessibility.

[Visium] Disassemble the operands of the stop instruction.

binutils/
        * MAINTAINERS: Add myself as Visium maintainer.
opcodes/
        * visium-dis.c (disassem_class1) <case 0>: Print the operands.

Update Cris assembler tests for checks that now pass where they used to fail.

PR gas/22304
* testsuite/gas/cris/range-err-1.s: Remove spurious xfails.
* testsuite/gas/cris/cris.exp: Expect the shexpr-1 test to pass.

Update the Swedish translation in the GAS subdirectory.

* po/sv.po: Updated Swedish translation.

Add a warning to the how-to-make-a-release notes to check the permissions on the files in the tarball.

* README-how-to-make-a-release: A note about checking file and
directory permissions.

Move Svein Seldal to Past Maintainers section.

* MAINTAINERS: Move Svein Seldal to Past Maintainers section.

Remove features/tic6x-c62x-linux.c

c40c7bf (Remove features/tic6x-*.c files) doesn't remove
features/tic6x-c62x-linux.c.  This patch removes it.

gdb:

2017-10-18  Yao Qi  <yao.qi@linaro.org>

* features/tic6x-c62x-linux.c: Remove.

PR22303, print_core_note out of bounds read

The print_core_note change here fixes the PR, the rest is making
readelf a little more bombproof against maliciously crafted binaries.

PR 22303
* readelf.c (print_core_note): Ensure "count" sanity check
calculation doesn't overflow.
(process_notes_at): Perform note namesz and descsz checks
using unsigned comparisons against data remaining.  Catch
alignment overflow of namesz and descsz too.  Don't allocate a
temp for terminating "name" when there is space available
before descdata.

microblaze: Check for indirect and warning symbols

Relocations against indirect and warning symbols should be applied to real
symbols.

* elf32-microblaze.c (microblaze_elf_check_relocs): Check for
indirect and warning symbols.

Automatic date update in version.in

[GOLD] Fix powerpc64 optimization of TOC accesses

Fixes a thinko.  Given code that puts variables into the TOC (a bad
idea, but some see the TOC as a small data section) this bug could
result in an attempt to optimize a sequence that should not be
optimized.

* powerpc.cc (Target_powerpc::Scan::local): Correct dst_off
calculation for TOC16 relocs.
(Target_powerpc::Scan::global): Likewise.

Really make the native-stdio-gdbserver board non-remote

I've noticed now that due to a last-minute change, commit 739b3f1d8ff7
("Make native gdbserver boards no longer be "remote" (in DejaGnu
terms)") managed to miss loading "local-board" in the
native-stdio-gdbserver board...

gdb/testsuite/ChangeLog:
2017-10-17  Pedro Alves  <palves@redhat.com>

* boards/native-stdio-gdbserver.exp: Load "local-board".

Add myself as dwarf-mode.el maintainer

In https://sourceware.org/ml/binutils/2017-10/msg00160.html, Nick said I
should update MAINTAINERS to mention that I'm the dwarf-mode.el
maintainer.  So, I'm checking this in.

2017-10-17  Tom Tromey  <tom@tromey.com>

* MAINTAINERS: Add myself as dwarf-mode.el maintainer.

Add several "quit with live inferior" tests

In my multi-target branch, I had managed to break GDB exiting
successfuly in response to "quit" or SIGHUP/SIGTERM when:

 - you're debugging with "target extended-remote",
 - have more than one inferior loaded in gdb, some running, and at
   least one not running, and,
 - quit gdb with the inferior that is not running yet selected.

The testsuite still passed cleanly anyway.  I only noticed because I
was left with a bunch of core dumps in the gdb/testsuite/ directory --
the testsuite infrastructure closes GDB's pty after running each
testcase, which results in GDB getting a SIGHUP and should make GDB
exit gracefully.  If GDB crashes at that point though, there's no
indication about it in gdb.sum/gdb.log.

This commit adds a multitude of tests exercising quitting GDB with
live inferiors, some of which would have caught the problem.

gdb/testsuite/ChangeLog:
2017-10-17  Pedro Alves  <palves@redhat.com>

* gdb.base/quit-live.c: New file.
* gdb.base/quit-live.exp: New file.

Remove cleanups from disasm.c

This changes the remaining spots in disasm.c to use the RAII ui-out
emitters, removing a few cleanups.  This also fixes a regression that
Simon pointed out.

2017-10-17  Tom Tromey  <tom@tromey.com>

* disasm.c (do_mixed_source_and_assembly_deprecated): Use
gdb::optional, ui_out_emit_list, ui_out_emit_tuple.
(do_mixed_source_and_assembly): Likewise.

Remove obsolete assertion from regcache.c

When building I got:

../../binutils-gdb/gdb/regcache.c:935:24: error: the address of ‘ssize_t read(int, void*, size_t)’ will never be NULL [-Werror=address]

This happens because "read" used to be a parameter to this function,
which was then removed; but the assertion wasn't updated.

I don't think the assertion is relevant any more, to this removes it.
I'm checking it in as obvious.

2017-10-17  Tom Tromey  <tom@tromey.com>

* regcache.c (regcache::xfer_part): Remove assertion.

PR22307, Heap out of bounds read in _bfd_elf_parse_gnu_properties

When adding an unbounded increment to a pointer, you can't just check
against the end of the buffer but also must check that overflow
doesn't result in "negative" pointer movement.  Pointer comparisons
are signed.  Better, check the increment against the space left using
an unsigned comparison.

PR 22307
* elf-properties.c (_bfd_elf_parse_gnu_properties): Compare datasz
against size left rather than comparing pointers.  Reorganise loop.

Fix double-free corruption

Fixes a double-free regression introduced by commit b7b030adc405
("Return unique_xmalloc_ptr from target_read_stralloc"):

gdb.sum:
  Running src/gdb/testsuite/gdb.base/catch-syscall.exp ...
  ERROR: Process no longer exists

Valgrind shows:

  (gdb) catch syscall
  ==3687== Thread 1:
  ==3687== Invalid free() / delete / delete[] / realloc()
  ==3687==    at 0x4C29CF0: free (vg_replace_malloc.c:530)
  ==3687==    by 0x610862: xfree(void*) (common-utils.c:101)
  ==3687==    by 0x440D5D: gdb::xfree_deleter<char>::operator()(char*) const (gdb_unique_ptr.h:34)
  ==3687==    by 0x446CC6: std::unique_ptr<char, gdb::xfree_deleter<char> >::reset(char*) (unique_ptr.h:344)
  ==3687==    by 0x81BE50: xml_fetch_content_from_file(char const*, void*) (xml-support.c:1042)
  ==3687==    by 0x81DA86: xml_init_syscalls_info(char const*) (xml-syscall.c:366)
  ==3687==    by 0x81DBDD: init_syscalls_info(gdbarch*) (xml-syscall.c:398)
  ==3687==    by 0x81E131: get_syscall_by_number(gdbarch*, int, syscall*) (xml-syscall.c:599)
  ==3687==    by 0x5BE86F: catch_syscall_command_1(char*, int, cmd_list_element*) (break-catch-syscall.c:481)
  ==3687==    by 0x4B46B1: do_sfunc(cmd_list_element*, char*, int) (cli-decode.c:138)
  ==3687==    by 0x4B76B8: cmd_func(cmd_list_element*, char*, int) (cli-decode.c:1952)
  ==3687==    by 0x7E91C7: execute_command(char*, int) (top.c:615)
  ==3687==  Address 0x14332ae0 is 0 bytes inside a block of size 4,096 free'd
  ==3687==    at 0x4C2AB8B: realloc (vg_replace_malloc.c:785)
  ==3687==    by 0x610792: xrealloc (common-utils.c:62)
  ==3687==    by 0x81BE3E: xml_fetch_content_from_file(char const*, void*) (xml-support.c:1042)
  ==3687==    by 0x81DA86: xml_init_syscalls_info(char const*) (xml-syscall.c:366)
  ==3687==    by 0x81DBDD: init_syscalls_info(gdbarch*) (xml-syscall.c:398)
  ==3687==    by 0x81E131: get_syscall_by_number(gdbarch*, int, syscall*) (xml-syscall.c:599)
  ==3687==    by 0x5BE86F: catch_syscall_command_1(char*, int, cmd_list_element*) (break-catch-syscall.c:481)
  ==3687==    by 0x4B46B1: do_sfunc(cmd_list_element*, char*, int) (cli-decode.c:138)
  ==3687==    by 0x4B76B8: cmd_func(cmd_list_element*, char*, int) (cli-decode.c:1952)
  ==3687==    by 0x7E91C7: execute_command(char*, int) (top.c:615)
  ==3687==    by 0x6A422D: command_handler(char*) (event-top.c:583)
  ==3687==    by 0x6A45F2: command_line_handler(char*) (event-top.c:773)
  [...]

The problem is that if xrealloc decides it needs a new memory block,
it frees the previous block/pointer, and then text.reset() frees it
again.

gdb/ChangeLog:
2017-10-17  Pedro Alves  <palves@redhat.com>

* xml-support.c (xml_fetch_content_from_file): Call
unique_ptr::release() instead unique_ptr::get() when passing
through xrealloc.

Simplify regcache::xfer_part

Since xfer_part is already a class method, and only
{raw,cooked}_{read,write} are passed to it.  We can remove these two
arguments, but add a bool argument is_raw, indicating raw registers or
cooked registers are accessed.

gdb:

2017-10-17  Yao Qi  <yao.qi@linaro.org>

* regcache.c (regcache::xfer_part): Remove parameters read and
write, add parameter is_raw.  All callers are updated.

[GDBserver] Move aarch64-insn.o to arch/ and remove one Makefile rule

gdb/gdbserver:

2017-10-17  Yao Qi  <yao.qi@linaro.org>

* Makefile.in: Remove one rule.
* configure.srv: Rename aarch64-insn.o with arch/aarch64-insn.o.

[GDBserver] Move arm-linux.o and arm-get-next-pcs.o to arch/

gdb/gdbserver:

2017-10-17  Yao Qi  <yao.qi@linaro.org>

* configure.srv: Rename arm-linux.o with arch/arm-linux.o.
Rename arm-get-next-pcs.o with arch/arm-get-next-pcs.o.

[GDBserver] Move arm.o to arch/arm.o

gdb/gdbserver:

2017-10-17  Yao Qi  <yao.qi@linaro.org>

* configure.srv: Rename arm.o with arch/arm.o.

[GDBserver] Replicate src dir in build dir

Similar to f38307f5 (Replicate src dir in build dir), this patch change
configure and Makefile to generate object files in arch/ directory.

gdb/gdbserver:

2017-10-17  Yao Qi  <yao.qi@linaro.org>

* Makefile.in (CONFIG_SRC_SUBDIR): New variable.
(clean): Remove .o files in CONFIG_SRC_SUBDIR.
(distclean): Remove DEPDIR in CONFIG_SRC_SUBDIR.
(arch-i386.o, arch-amd64.o): Remove rules.
(arch/%.o): New rule.
Update POSTCOMPILE and COMPILE.pre.
* configure.ac: Invoke AC_CONFIG_COMMANDS.
* configure: Re-generated.
* configure.srv: Replace arch-i386.o with arch/i386.o.
Replace arch-amd64.o with arch/amd64.o.

PR22306, Invalid free() in slurp_symtab()

PR 22306
* aoutx.h (aout_get_external_symbols): Handle stringsize of zero,
and error for any other size that doesn't cover the header word.

Correct -z text and other -z documentation

-z text applies to all dynamic binaries, not just shared libraries.
A lot of the other options needed attention too.

* ld.texinfo (-z): Combine negative options with corresponding
positive option.  Sort the table.  Expand and correct "combreloc",
"common", "common-page-size", "interpose", "loadfltr",
"max-page-size", "muldefs", "nodefaultlib", "nodelete", "nodlopen",
"nodump", "noextern-protected-data", "now", "origin", and "text".

Add missing ChangeLog entries.

Fix segfault processing nios2 pseudo-instructions with too few arguments.

2017-10-16  Sandra Loosemore  <sandra@codesourcery.com>
    Henry Wong  <henry@stuffedcow.net>

gas/
* config/tc-nios2.c (nios2_translate_pseudo_insn): Check for
correct number of arguments.
(md_assemble): Handle failure of nios2_translate_pseudo_insn.
* testsuite/gas/nios2/illegal_pseudoinst.l: New file.
* testsuite/gas/nios2/illegal_pseudoinst.s: New file.
* testsuite/gas/nios2/nios2.exp: Add illegal_pseudoinst test.

Record and output access specifiers for nested typedefs

We currently do not record access information for typedefs defined inside
classes.  Consider:

struct foo
{
   typedef int PUBLIC;
 private:
   typedef int PRIVATE;
   PRIVATE b;
};

(gdb) ptype foo
type = struct foo {
  private:
    PRIVATE b;

    typedef int PRIVATE;
    typedef int PUBLIC;
}

This patch fixes this:

(gdb) ptype foo
type = struct foo {
  private:
    PRIVATE b;

    typedef int PRIVATE;
  public:
    typedef int PUBLIC;
}

gdb/ChangeLog:

* c-typeprint.c (enum access_specifier): Moved here from
c_type_print_base.
(output_access_specifier): New function.
(c_type_print_base): Consider typedefs when assessing
whether access labels are needed.
Use output_access_specifier as needed.
Output access specifier for typedefs, if needed.
* dwarf2read.c (dwarf2_add_typedef): Record DW_AT_accessibility.
* gdbtypes.h (struct typedef_field) <is_protected, is_private>: New
fields.
(TYPE_TYPEDEF_FIELD_PROTECTED, TYPE_TYPEDEF_FIELD_PRIVATE): New
accessor macros.

gdb/testsuite/ChangeLog:

* gdb.cp/classes.cc (class_with_typedefs, class_with_public_typedef)
(class_with_protected_typedef, class_with_private_typedef)
(struct_with_public_typedef, struct_with_protected_typedef)
(struct_with_private_typedef): New classes/structs.
* gdb.cp/classes.exp (test_ptype_class_objects): Add tests for
typedefs and access specifiers.

Automatic date update in version.in

Return unique_xmalloc_ptr from target_fileio_read_stralloc

Change target_fileio_read_stralloc to return unique_xmalloc_ptr and
fix up the callers.  This removes a number of cleanups.

ChangeLog
2017-10-16  Tom Tromey  <tom@tromey.com>

* linux-tdep.c (linux_info_proc, linux_find_memory_regions_full)
(linux_fill_prpsinfo, linux_vsyscall_range_raw): Update.
* target.c (target_fileio_read_stralloc): Update.
* sparc64-tdep.c (adi_is_addr_mapped): Update.
* target.h (target_fileio_read_stralloc): Return
unique_xmalloc_ptr.

Return unique_xmalloc_ptr from target_read_stralloc

This changes target_read_stralloc to return a unique_xmalloc_ptr, and
then fixes all the callers.  unique_xmalloc_ptr is used, rather than
std::string, because target_read_stralloc gives a special meaning to a
NULL return.

ChangeLog
2017-10-16  Tom Tromey  <tom@tromey.com>

* xml-syscall.c (xml_init_syscalls_info): Update.
* xml-support.c (xinclude_start_include): Update.
(xml_fetch_content_from_file): Return unique_xmalloc_ptr.
* xml-support.h (xml_fetch_another): Return unique_xmalloc_ptr.
(xml_fetch_content_from_file): Likewise.
* osdata.c (get_osdata): Update.
* target.h (target_read_stralloc, target_get_osdata): Return
unique_xmalloc_ptr.
* solib-aix.c (solib_aix_get_library_list): Update.
* solib-target.c (solib_target_current_sos): Update.
* solib-svr4.c (svr4_current_sos_via_xfer_libraries): Update.
* xml-tdesc.c (fetch_available_features_from_target): Update.
(target_fetch_description_xml): Update.
(file_read_description_xml): Update.
* remote.c (remote_get_threads_with_qxfer, remote_memory_map)
(remote_traceframe_info, btrace_read_config, remote_read_btrace)
(remote_pid_to_exec_file): Update.
* target.c (target_read_stralloc): Return unique_xmalloc_ptr.
(target_get_osdata): Likewise.

Simple cleanup removals in remote.c

This removes a few cleanups in remote.c using the usual techniques:
std::vector, unique_xmalloc_ptr, and gdb::def_vector.

ChangeLog
2017-10-16  Tom Tromey  <tom@tromey.com>

* remote.c (remote_register_number_and_offset): Use std::vector.
(remote_set_syscall_catchpoint): Use gdb::unique_xmalloc_ptr.
(putpkt_binary): Use gdb::def_vector.
(compare_sections_command): Use gdb::byte_vector.

Remove cleanup from ppc-linux-nat.c

This removes a cleanup from ppc-linux-nat.c, by using
unique_xmalloc_ptr.  It also slightly simplifies the code by using
XDUP rather than XNEW and memcpy.

ChangeLog
2017-10-16  Tom Tromey  <tom@tromey.com>

* ppc-linux-nat.c (hwdebug_insert_point): Use
gdb::unique_xmalloc_ptr, XDUP.

Remove some cleanups from probe.c

This removes some cleanups from parse_probes by using std::string; and
removes some unnecessary cleanups from elsewhere in probe.c.

ChangeLog
2017-10-16  Tom Tromey  <tom@tromey.com>

* probe.c (parse_probes): Use std::string.
(info_probes_for_ops, enable_probes_command)
(disable_probes_command): Remove cleanups.

Use std::vector in end_symtab_get_static_block

Change end_symtab_get_static_block to use std::vector.  This removes a
cleanup.

ChangeLog
2017-10-16  Tom Tromey  <tom@tromey.com>

* buildsym.c (block_compar): Remove.
(end_symtab_get_static_block): Use std::vector.

Make native gdbserver boards no longer be "remote" (in DejaGnu terms)

This commit finally clears the "isremote" flag in the native-gdbserver
and native-stdio-gdbserver boards.  The goal is to make all "native"
boards be considered not remote in DejaGnu terms, like the
native-extended-gdbserver board is too.

DejaGnu automatically considers boards remote if their names don't
match the local hostname.  That means that native-gdbserver and
native-extended-gdbserver are considered remote by default by DejaGnu,
even though they run locally.  native-extended-gdbserver, however,
overrides its isremote flag to force it to be not remote.  So we are
in that weird state where native-gdbserver is considered remote, and
native-extended-gdbserver is considered not remote.

A recent set of commits fixed all the problems (and some more) exposed
by testing with --target_board=native-gdbserver and
--target_board=native-stdio-gdbserver with isremote forced off on
x86-64 GNU/Linux.  I believe we're good to go now.

The native-stdio-gdbserver.exp/remote-stdio-gdbserver.exp boards
required deep non-obvious modifications unfortunately...  The problem
is that if a board is not remote, then DejaGnu doesn't call
${board}_spawn / ${board}_exec at all, and the
native-stdio-gdbserver.exp board relies on those procedures being
called.  To fix that, this commit redesigns how the stdio boards hook
into the testing framework to spawn gdbserver.  IMO, this is a good
change anyway, because the way its done currently is a bit of a hack,
and the result turns out to be simpler, even.  With this commit, they
now no longer load the "gdbserver" generic config, and hook at the
mi_gdb_target_load/gdb_reload level instead, making them more like
traditional board files.

To share code between native-stdio-gdbserver.exp and
remote-stdio-gdbserver.exp, a new shared stdio-gdbserver-base.exp file
is created.

Instead of having each native board clear isremote manually, boards
source the new "local-board.exp" file.

This also adds a new section to testsuite/README file discussing
local/remote/native, so that we can easily refer to it.

gdb/testsuite/ChangeLog:
2017-10-16  Pedro Alves  <palves@redhat.com>
    Simon Marchi  <simon.marchi@polymtl.ca>

* README (Local vs Remote vs Native): New section.
* boards/local-board.exp: New file, with bits factored out from
...
* boards/native-extended-gdbserver.exp: ... here.  Load
"local-board".
* boards/native-gdbserver.exp: Load "local-board".
(${board}_spawn, ${board}_exec): Delete.
* boards/native-stdio-gdbserver.exp: Most contents factored out to
...
* boards/stdio-gdbserver-base.exp: ... this new file.
* boards/native-stdio-gdbserver.exp: Reimplement, by loading
"stdio-gdbserver-base" and defining a get_target_remote_pipe_cmd
procedure.
* boards/remote-stdio-gdbserver.exp: Load stdio-gdbserver-base
instead of native-stdio-gdbserver.  Don't set gdb_server_prog nor
stdio_gdbserver_command.
(${board}_get_remote_address, ${board}_get_comm_port)
(${board}_download, ${board}_upload): Delete.
(get_target_remote_pipe_cmd): New.

Use proc_with_prefix in py-breakpoint.exp

Use proc_with_prefix to avoid having to call with_test_prefix with a
duplicate of the proc name.  The diff is mostly lines being re-indented.

gdb/testsuite/ChangeLog:

* gdb.python/py-breakpoint.exp (test_bkpt_basic,
test_bkpt_deletion, test_bkpt_cond_and_cmds,
test_bkpt_invisible, test_watchpoints, test_bkpt_internal,
test_bkpt_eval_funcs, test_bkpt_temporary, test_bkpt_address,
test_bkpt_pending, test_bkpt_events): Use proc_with_prefix,
remove with_test_prefix.

Get rid of VEC(mem_range_s)

This patch replaces the last usages of VEC(mem_range_s) with
std::vector<mem_range>.  This allows getting rid of a few cleanups and
of the DEF_VEC_O(mem_range_s).

I added a test for normalize_mem_ranges to make sure I didn't break
anything there.

Regtested on the buildbot.

gdb/ChangeLog:

* memrange.h (struct mem_range): Define operator< and operator==.
(mem_range_s): Remove.
(DEF_VEC_O (mem_range_s)): Remove.
(normalize_mem_ranges): Change parameter type to std::vector.
* memrange.c (compare_mem_ranges): Remove.
(normalize_mem_ranges): Change parameter type to std::vector,
adjust to vector change.
* exec.c (section_table_available_memory): Return vector, remove
parameter.
(section_table_read_available_memory): Adjust to std::vector
change.
* remote.c (remote_read_bytes): Adjust to std::vector
change.
* tracepoint.h (traceframe_available_memory): Change parameter
type to std::vector.
* tracepoint.c (traceframe_available_memory): Change parameter
type to std::vector, adjust.
* gdb/mi/mi-main.c (mi_cmd_trace_frame_collected): Adjust to
std::vector change.
* gdb/Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
unittests/memrange-selftests.c.
(SUBDIR_UNITTESTS_OBS): Add memrange-selftests.o.
* gdb/unittests/memrange-selftests.c: New file.

Work around GCC 6.3.1 bug

This commit works around a GCC 6.3.1 bug several people are hitting:

  https://sourceware.org/ml/gdb-patches/2017-09/msg00270.html
  https://sourceware.org/ml/gdb-patches/2017-10/msg00418.html

It manifests like this:

  ../../../binutils-gdb/gdb/probe.c:68:12: error: types may not be defined in a for-range-declaration [-Werror]
 for (struct probe *probe : probes)
      ^~~~~~

Fix it by renaming the range-for named variables to something different
from their type's name.

gdb/ChangeLog:
2017-10-16  Pedro Alves  <palves@redhat.com>

* elfread.c (probe_key_free): Rename range-for variable.
* probe.c (parse_probes_in_pspace, find_probes_in_objfile)
(find_probe_by_pc, collect_probes): Rename range-for variable.

ELF: Call check_relocs after opening all inputs

For all ELF targers, call check_relocs after opening all inputs and
garbage collection.  Since the symbol resolution is known, check_relocs
can be simplified.  Also garbage collection doesn't need to undo what
check_relocs has done for symbols which have been garbage collected.
Since ELF targets never see the removed sections, gc_sweep_hook can be
removed from elf_backend_data and we can avoid GOT/PLT with garbage
collection now.

Set link_info.check_relocs_after_open_input to TRUE for all linker
targets which use ELF linker and update garbage collection tests to
remove unused GOT section.

ldemul_after_check_relocs is added for powerpc to support --secure-plt,
--bss-plt and --sdata-got.

Tested natively without regressions on i686, x86-64 and x32.  Tested
cross binutils on x86-64 without regressions for aarch64-linux,
alpha-linux, arm-linux, bfin-elf, cr16-elf, cris-elf, crx-elf, frv-linux,
hppa64-linux, hppa-linux, ia64-linux, lm32-elf, m32r-elf, m68k-linux,
mcore-elf, metag-elf, microblaze-linux, mips-linux, mmix, mn10300-elf,
nds32le-linux, nios2-linux, or1k-elf, powerpc64-linux, powerpc-linux,
riscv32-linux, riscv64-linux, s390-linux, s390x-linux, score-elf,
sh3-linux, sparc64-linux, sparc-linux, tic6x-elf, tilegx-linux,
tilepro-linux, vax-linux, x86_64-mingw32 and xtensa-linux.

bfd/

* elf-bfd.h (elf_backend_data): Remove gc_sweep_hook.
* elf32-arm.c (elf32_arm_gc_sweep_hook): Removed.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-bfin.c (bfin_gc_sweep_hook): Likewise.
(bfinfdpic_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-cr16.c (elf32_cr16_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-cris.c (cris_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-hppa.c (elf32_hppa_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-lm32.c (lm32_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-m32r.c (m32r_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-m68k.c (elf_m68k_got_entry): Remove elf_m68k_gc_sweep_hook
from comments.
(elf_m68k_remove_got_entry_type): Removed.
(elf_m68k_find_got_entry_ptr): Likewise.
(elf_m68k_remove_got_entry): Likewise.
(elf_m68k_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-mcore.c (mcore_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-metag.c (elf_metag_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-microblaze.c (elf_backend_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-mips.c (elf_backend_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-nds32.c (nds32_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-nios2.c (nios2_elf32_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-or1k.c (or1k_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-ppc.c (ppc_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-s390.c (elf_s390_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-sparc.c (elf_backend_gc_sweep_hook): Likewise.
* elf32-tic6x.c (elf32_tic6x_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-tilegx.c (elf_backend_gc_sweep_hook): Likewise.
* elf32-tilepro.c (tilepro_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-vax.c (elf_vax_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf32-xtensa.c (elf_xtensa_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf64-alpha.c (elf64_alpha_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf64-mips.c (elf_backend_gc_sweep_hook): Likewise.
* elf64-mmix.c (mmix_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf64-ppc.c (elf_backend_gc_sweep_hook): Likewise.
(ppc64_elf_gc_sweep_hook): Likewise.
* elf64-s390.c (elf_s390_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elf64-sparc.c (elf_backend_gc_sweep_hook): Likewise.
* elf64-tilegx.c (elf_backend_gc_sweep_hook): Likewise.
* elflink.c (elf_link_add_object_symbols): Don't call
_bfd_elf_link_check_relocs here.
(gc_sweep_hook_fn): Removed.
(elf_gc_sweep): Remove gc_sweep_hook.
* elfnn-aarch64.c (elfNN_aarch64_gc_sweep_hook): Removed.
(elf_backend_gc_sweep_hook): Likewise.
* elfnn-riscv.c (riscv_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elfxx-mips.c (_bfd_mips_elf_gc_sweep_hook): Likewise.
* elfxx-mips.h (_bfd_mips_elf_gc_sweep_hook): Likewise.
(elf_backend_gc_sweep_hook): Likewise.
* elfxx-sparc.c (_bfd_sparc_elf_gc_sweep_hook): Likewise.
* elfxx-sparc.h (_bfd_sparc_elf_gc_sweep_hook): Likewise.
* elfxx-target.h (elf_backend_gc_sweep_hook): Likewise.
(elfNN_bed): Remove elf_backend_gc_sweep_hook.
* elfxx-tilegx.c (tilegx_elf_gc_sweep_hook): Removed.
* elfxx-tilegx.h (tilegx_elf_gc_sweep_hook): Likewise.

ld/

* emulparams/elf32_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Removed.
* emulparams/elf_i386_be.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_i386_chaos.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_i386_ldso.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_i386_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_iamcu.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_k1om.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_l1om.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/elf_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386lynx.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386moss.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386nw.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shelf.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shelf32.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shelf_nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shelf_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shlelf32_linux.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shlelf_linux.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/shlelf_nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emultempl/aarch64elf.em (gld${EMULATION_NAME}_before_parse):
Set link_info.check_relocs_after_open_input to TRUE.
* emultempl/armelf.em (gld${EMULATION_NAME}_before_parse):
Likewise.
* emultempl/scoreelf.em (gld${EMULATION_NAME}_before_parse):
Likewise.
* emultempl/aix.em (ld_${EMULATION_NAME}_emulation): Add
after_parse_default.
* emultempl/armcoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/beos.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/generic.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/gld960.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/gld960c.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/lnk960.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/m68kcoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/msp430.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/pe.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/pep.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/sunos.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/ticoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/vanilla.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Always
set link_info.check_relocs_after_open_input to TRUE.
(ld_${EMULATION_NAME}_emulation): Add $LDEMUL_AFTER_CHECK_RELOCS.
* emultempl/linux.em (gld${EMULATION_NAME}_before_parse):
Set link_info.check_relocs_after_open_input to TRUE.
(ld_${EMULATION_NAME}_emulation): Add after_check_relocs_default.
* emultempl/mmix-elfnmmo.em (mmix_before_parse): New function.
(LDEMUL_BEFORE_PARSE): New.
* emultempl/mmixelf.em (elfmmix_before_parse): Replace
gld${EMULATION_NAME}_before_parse with mmix_before_parse.
* emultempl/ppc32elf.em (ppc_after_open): Renamed to ...
(ppc_after_check_relocs): This.  Call after_check_relocs_default
instead of gld${EMULATION_NAME}_after_open.
(LDEMUL_AFTER_OPEN): Removed.
(LDEMUL_AFTER_CHECK_RELOCS): New.
* ldemul.c (ldemul_after_check_relocs): New.
(after_check_relocs_default): Likewise.
* ldemul.h (ldemul_after_check_relocs): Likewise.
(after_check_relocs_default): Likewise.
(ld_emulation_xfer_struct): Add after_check_relocs.
* ldlang.c (lang_process): Call ldemul_after_check_relocs after
lang_check_relocs.
* testsuite/ld-aarch64/gc-got-relocs.d: Don't expect GOT section.
* testsuite/ld-aarch64/gc-tls-relocs.d: Likewise.
* testsuite/ld-cris/tls-gc-68.d: Likewise.
* testsuite/ld-cris/tls-gc-69.d: Likewise.
* testsuite/ld-cris/tls-gc-70.d: Likewise.
* testsuite/ld-cris/tls-gc-75.d: Likewise.
* testsuite/ld-cris/tls-gc-79.d: Likewise.
* testsuite/ld-mmix/bpo-10.d: Don't expect .MMIX.reg_contents
section.

Regenerate gdbserver/configure

4fa7574 (Fix gdb 8.1 Solaris compilation) changes warning.m4 and updates
configure, but gdbserver/configure is not updated.

gdb/gdbserver:

2017-10-16  Yao Qi  <yao.qi@linaro.org>

* configure: Regenerated.

Remove features/tic6x-*.c files

features/*.c are generated from *.xml files, in order to get pre-defined
target descriptions, (for native debugging, for example).  However, these
pre-generated tdesc_tic6x_* are not used in GDB at all.  This patch removes
features/tic6x-*.c files.

gdb:

2017-10-16  Yao Qi  <yao.qi@linaro.org>

* features/Makefile (XMLTOC): Remove tic6x-*.xml.
* features/tic6x-c62x.c: Remove.
* features/tic6x-c64x-linux.c: Remove.
* features/tic6x-c64x.c: Remove.
* features/tic6x-c64xp-linux.c: Remove.
* features/tic6x-c64xp.c: Remove.
* tic6x-linux-tdep.c (_initialize_tic6x_linux_tdep): Don't call
initialize_tdesc_tic6x_*_linux functions.
* tic6x-tdep.c (_initialize_tic6x_tdep): Don't call
initialize_tdesc_tic6x_* functions.

Remove regformats/tic6x-{c62x,c64x,c64xp}.dat

tic6x-uclinux GDBserver uses linux target descriptions, instead of these
non-linux target descriptions.  So we can remove these *.dat files.

gdb:

2017-10-16  Yao Qi  <yao.qi@linaro.org>

* features/Makefile (WHICH): Remove tic6x-c64xp, tic6x-c64x
tic6x-c62x.
* regformats/tic6x-c62x.dat: Remove.
* regformats/tic6x-c64x.dat: Remove.
* regformats/tic6x-c64xp.dat: Remove.

Fix GDB build without expat

An earlier patch of mine changed parse_traceframe_info to make it return
a unique_ptr.  I forgot to update the version of the function used in an
expat-less build, this patch fixes it.

gdb/ChangeLog:

* tracepoint.c (parse_traceframe_info): Return a unique_ptr
(the !HAVE_LIBEXPAT version).

Automatic date update in version.in

Automatic date update in version.in

x86: Add elf_x86_backend_data

Add plt0_pad_byte and target_os fields to elf_x86_link_hash_table.
Replace elf_i386_backend_data and elf_x86_64_backend_data with
elf_x86_backend_data.

* elf32-i386.c (elf_i386_backend_data): Removed.
(get_elf_i386_backend_data): Likewise.
(elf_i386_arch_bed): Replace elf_i386_backend_data with
elf_x86_backend_data.
(elf_i386_get_synthetic_symtab): Likewise.
(elf_i386_nacl_arch_bed): Likewise.
(elf_i386_vxworks_arch_bed): Likewise.
(elf_i386_relocate_section): Check target_os instead of
is_vxworks.
(elf_i386_finish_dynamic_symbol): Likewise.
(elf_i386_finish_dynamic_sections): Use htab->plt0_pad_byte.
Check target_os instead of is_vxworks.
(elf_i386_link_setup_gnu_properties): Remove normal_target and
is_vxworks.  Initialize plt0_pad_byte.
* elf64-x86-64.c (elf_x86_64_backend_data); Removed.
(get_elf_x86_64_arch_data): Likewise.
(get_elf_x86_64_backend_data): Likewise.
(elf_x86_64_arch_bed): Replace elf_x86_64_backend_data with
elf_x86_backend_data.
(elf_x86_64_get_synthetic_symtab): Likewise.
(elf_x86_64_nacl_arch_bed): Likewise.
(elf_x86_64_link_setup_gnu_properties): Remove is_vxworks and
normal_target.  Initialize plt0_pad_byte.
* elfxx-x86.c (elf_x86_allocate_dynrelocs): Check target_os
instead of is_vxworks.
(_bfd_x86_elf_size_dynamic_sections): Likewise.
(_bfd_x86_elf_finish_dynamic_sections): Likewise.
(_bfd_x86_elf_adjust_dynamic_symbol): Likewise.
(_bfd_x86_elf_link_hash_table_create): Initialize target_os.
(_bfd_x86_elf_link_setup_gnu_properties): Remove is_vxworks.
Update normal_target.  Set up plt0_pad_byte.  Check target_os
instead of is_vxworks.
* elfxx-x86.h (elf_x86_target_os): New.
(elf_x86_backend_data): Likewise.
(get_elf_x86_backend_data): Likewise.
(elf_x86_link_hash_table): Remove is_vxworks.  Add plt0_pad_byte
and target_os.
(elf_x86_init_table): Remove normal_target and is_vxworks.  Add
plt0_pad_byte.

x86: Add _bfd_x86_elf_finish_dynamic_sections

Extract the common parts of elf_i386_finish_dynamic_sections and
elf_x86_64_finish_dynamic_sections into a separate function in
elfxx-x86.c.

* elf32-i386.c (elf_i386_finish_dynamic_sections): Call
_bfd_x86_elf_finish_dynamic_sections.
* elf64-x86-64.c (elf_x86_64_finish_dynamic_sections): Likewise.
* elfxx-x86.c (_bfd_x86_elf_finish_dynamic_sections): New
function.
* elfxx-x86.h (_bfd_x86_elf_finish_dynamic_sections): New
prototype.

cris: Don't hide symbol which was forced to be dynamic

h->root.dynamic is set on symbols which were forced to be dynamic due
to a version script file.  Don't remove such symbols from dynamic symbol
table.  This fixes:

FAIL: ld-elf/pr21384

PR ld/21384
* elf32-cris.c (elf_cris_discard_excess_program_dynamics): Don't
hide symbol which was forced to be dynamic.

cris: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

bfd/

PR ld/22269
* elf32-cris.c (cris_elf_relocate_section): Don't generate
dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(cris_elf_check_relocs): Don't allocate dynamic relocation
if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

ld/

PR ld/22269
* testsuite/ld-cris/weakhiddso.d: Update and remove R_CRIS_NONE.

sh: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elf32-sh.c (allocate_dynrelocs): Discard dynamic relocations
if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(sh_elf_relocate_section): Don't generate dynamic relocation if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.

s390: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elf32-s390.c (allocate_dynrelocs): Discard dynamic
relocations if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(elf_s390_relocate_section): Don't generate dynamic relocation
if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
* elf64-s390.c (allocate_dynrelocs): Discard dynamic
relocations if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(elf_s390_relocate_section): Don't generate dynamic relocation
if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

nios2: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elf32-nios2.c (nios2_elf32_relocate_section): Don't generate
dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(allocate_dynrelocs): Discard dynamic relocations if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.

microblaze: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elf32-microblaze.c (microblaze_elf_relocate_section): Don't
generate dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is
true.
(allocate_dynrelocs): Discard dynamic relocations if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.

m68k: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elf32-m68k.c (elf_m68k_check_relocs): Don't allocate dynamic
relocations if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(elf_m68k_adjust_dynamic_symbol): Don't make symbol dynamic if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(elf_m68k_relocate_section): Don't generate dynamic relocation
if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

hppa: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elf32-hppa.c (ensure_undef_dynamic): Don't make undefined
symbol dynamic if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(allocate_dynrelocs): Discard dynamic relocations if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(elf32_hppa_relocate_section): Don't generate dynamic
relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

ia64: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elfnn-ia64.c (elfNN_ia64_check_relocs): Don't allocate
dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(allocate_fptr): Don't allocate function pointer if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(allocate_dynrel_entries): Don't allocate dynamic relocation
if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(set_got_entry): Don't set GOT entry if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(set_pltoff_entry): Don't set PLTOFF entry if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(elfNN_ia64_relocate_section): Don't install dynamic relocation
UNDEFWEAK_NO_DYNAMIC_RELOC is true.

mips: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elfxx-mips.c (mips_elf_calculate_relocation): Don't generate
dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(allocate_dynrelocs): Don't allocate dynamic relocations if
UNDEFWEAK_NO_DYNAMIC_RELOC is true.

arm: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elf32-arm.c (elf32_arm_final_link_relocate): Don't generate
dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(allocate_dynrelocs_for_symbol): Discard dynamic relocations
if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

tile: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elf32-tilepro.c (allocate_dynrelocs): Discard dynamic
relocations if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(tilepro_elf_relocate_section): Don't generate dynamic
relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
* elfxx-tilegx.c (allocate_dynrelocs): Discard dynamic
relocations if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
(tilegx_elf_relocate_section): Don't generate dynamic
relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

aarch64: Check UNDEFWEAK_NO_DYNAMIC_RELOC

Don't generate dynamic relocation against weak undefined symbol if it
is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
checked in more places.

PR ld/22269
* elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Don't
generate dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is
true.
(elfNN_aarch64_allocate_dynrelocs): Discard dynamic relocations
if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

Move UNDEFWEAK_NO_DYNAMIC_RELOC to elf-bfd.h

Move UNDEFWEAK_NO_DYNAMIC_RELOC to elf-bfd.h so that it can be used by
other ELF linker backends.

* elf32-ppc.c (UNDEFWEAK_NO_DYNAMIC_RELOC): Moved to ...
* elf-bfd.h (UNDEFWEAK_NO_DYNAMIC_RELOC): Here.
* elf64-ppc.c (UNDEFWEAK_NO_DYNAMIC_RELOC): Removed.

Fix build failure in linux-osdata.c

Commit

  Use std::vector in linux_xfer_osdata_processgroups
  b129dcac882da87767cb863ad8b2572f90e9e5bc

broke the build with older gcc (at least 4.7 and 4.8):

In file included from /usr/include/c++/4.7/algorithm:63:0,
                 from /home/emaisin/src/binutils-gdb/gdb/nat/linux-osdata.c:40:
/usr/include/c++/4.7/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<pid_pgid_entry*, std::vector<pid_pgid_entry> >; _Tp = pid_pgid_entry]’:
/usr/include/c++/4.7/bits/stl_algo.h:2315:70:   required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<pid_pgid_entry*, std::vector<pid_pgid_entry> >]’
/usr/include/c++/4.7/bits/stl_algo.h:2347:54:   required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<pid_pgid_entry*, std::vector<pid_pgid_entry> >; _Size = long int]’
/usr/include/c++/4.7/bits/stl_algo.h:5483:4:   required from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = __gnu_cxx::__normal_iterator<pid_pgid_entry*, std::vector<pid_pgid_entry> >]’
/home/emaisin/src/binutils-gdb/gdb/nat/linux-osdata.c:480:57:   required from here
/usr/include/c++/4.7/bits/stl_algo.h:2277:4: error: passing ‘const pid_pgid_entry’ as ‘this’ argument of ‘bool pid_pgid_entry::operator<(const pid_pgid_entry&)’ discards qualifiers [-fpermissive]

Making the operator< method const fixes it.

gdb/ChangeLog:

* nat/linux-osdata.c (struct pid_pgid_entry) <operator<>: Make
const.

gdbserver: use std::list for all_threads

Remove the usage of inferior_list for the all_threads list in
gdbserver.  The entry field in thread_info is removed, and replaced by a
simple ptid field.

I added some functions to iterate (for_each_thread) and find threads
(find_thread).  However, changing all the users of find_inferior & co to
use these new functions would have made the patch way too big.  So I
opted instead to make find_inferior & co some shims, so that the
existing code only needs to be updated minimally.  We can then update
the existing code to use the new functions incrementally (I've started
to do the work, but I'll post it afterwards, see [1] if you want a peek).

This patch has been built-tested on all relevant platforms, except
lynx.  I also regtested using the native-gdbserver and
native-extended-gdbserver boards on x86.

[1] https://github.com/simark/binutils-gdb/commits/kill-inferior-list-entry

gdb/gdbserver/ChangeLog:

* inferiors.h: (struct inferior_list): Remove.
(struct inferior_list_entry); Remove.
(add_inferior_to_list, clear_inferior_list, one_inferior_p,
A_I_NEXT, ALL_INFERIORS_TYPE, ALL_INFERIORS, remove_inferior,
get_first_inferior): Remove.
(for_each_inferior, for_each_inferior_with_data, find_inferior,
find_inferior_id, find_inferior_in_random): Change signature.
* inferiors.c (all_threads): Change type to
std::list<thread_info *>.
(get_thread): Remove macro.
(find_inferior, find_inferior_id): Change signature, implement
using find_thread.
(find_inferior_in_random): Change signature, implement using
find_thread_in_random.
(for_each_inferior, for_each_inferior_with_data): Change
signature, implement using for_each_thread.
(add_inferior_to_list, remove_inferior): Remove.
(add_thread, get_first_thread, thread_of_pid,
find_any_thread_of_pid, free_one_thread, remove_thread): Update.
(get_first_inferior, one_inferior_p, clear_inferior_list):
Remove.
(clear_inferiors, get_thread_process): Update.
* gdbthread.h: Include <list>.
(struct thread_info) <entry>: Remove field.
<id>: New field.
(all_threads): Change type to std::list<thread_info *>.
(get_first_inferior): Add doc.
(find_thread, for_each_thread, find_thread_in_random): New
functions.
(current_ptid, pid_of, ptid_of, lwpid_of): Update.
* linux-arm-low.c (update_registers_callback): Update.
* linux-low.c (second_thread_of_pid_p): Update.
(kill_one_lwp_callback, linux_detach_lwp_callback,
delete_lwp_callback, status_pending_p_callback, same_lwp,
find_lwp_pid, num_lwps, iterate_over_lwps_filter,
iterate_over_lwps, not_stopped_callback,
resume_stopped_resumed_lwps, count_events_callback,
select_singlestep_lwp_callback, select_event_lwp_callback,
unsuspend_one_lwp, linux_wait_1, send_sigstop_callback,
suspend_and_send_sigstop_callback, wait_for_sigstop,
stuck_in_jump_pad_callback, move_out_of_jump_pad_callback,
lwp_running, linux_set_resume_request, resume_status_pending_p,
need_step_over_p, start_step_over, linux_resume_one_thread,
proceed_one_lwp, unsuspend_and_proceed_one_lwp,
reset_lwp_ptrace_options_callback): Update.
* linux-mips-low.c (update_watch_registers_callback): Update.
* regcache.c (regcache_invalidate_one, regcache_invalidate):
Update.
(free_register_cache_thread_one): Remove.
(regcache_release): Update.
* server.c (handle_btrace_enable_bts, handle_btrace_enable_pt,
handle_qxfer_threads_worker): Update.
(handle_query): Update, use list iterator.
(visit_actioned_threads, handle_pending_status,
queue_stop_reply_callback, gdb_wants_all_threads_stopped,
clear_pending_status_callback, set_pending_status_callback,
find_status_pending_thread_callback, handle_status,
process_serial_event): Update.
* target.c (thread_search_callback): Update.
* thread-db.c (thread_db_get_tls_address): Update.
* tracepoint.c (tracepoint_finished_step, tracepoint_was_hit):
Update.
* win32-i386-low.c (update_debug_registers_callback): Update.
* win32-low.c (delete_thread_info, child_delete_thread,
continue_one_thread, suspend_one_thread,
get_child_debug_event): Adjust.

gdbserver: Use std::list for all_processes

Remove the usage of inferior_list for the all_processes list in
gdbserver, replace it with an std::list. The entry field in process_info
is removed, and replaced by a simple pid field.

The pid_of macro, used for both processes and threads, is replaced with
separate functions.  For completeness, I changed ptid_of and lwpid_of to
functions as well.

gdb/gdbserver/ChangeLog:

* gdbthread.h (ptid_of, pid_of, lwpid_of): New functions.
* inferiors.h: Include <list>.
(struct process_info) <entry>: Remove field.
<pid>: New field.
(pid_of): Change macro to function.
(ptid_of, lwpid_of): Remove macro.
(all_processes): Change type to std::list<process_info *>.
(ALL_PROCESSES): Remove macro.
(for_each_process, find_process): New function.
* inferiors.c (all_processes): Change type to
std::list<process_info *>.
(find_thread_process): Adjust.
(add_process): Likewise.
(remove_process): Likewise.
(find_process_pid): Likewise.
(get_first_process): Likewise.
(started_inferior_callback): Remove.
(have_started_inferiors_p): Adjust.
(attached_inferior_callback): Remove.
(have_attached_inferiors_p): Adjust.
* linux-low.c (check_zombie_leaders): Likewise.
* linux-x86-low.c (x86_arch_setup_process_callback): Remove.
(x86_linux_update_xmltarget): Adjust.
* server.c (handle_query): Likewise.
(gdb_reattached_process): Remove.
(handle_status): Adjust.
(kill_inferior_callback): Likewise.
(detach_or_kill_inferior): Remove.
(print_started_pid): Likewise.
(print_attached_pid): Likewise.
(detach_or_kill_for_exit): Update.
(process_serial_event): Likewise.
* linux-arm-low.c (arm_new_fork): Likewise.

gdbserver: Use std::list for all_dlls

As a small step towards removing inferior_list/inferior_list_entry, this
patch replaces the usage of inferior_list for the list of dlls by an
std::list.  The dll_info type now uses an std::string for name and has a
simple constructor.

I am able to build gdbserver with mingw on Linux, but I am not able to
test this on a Windows machine (the only platform that uses this code).

gdb/gdbserver/ChangeLog:

* dll.h: Include <list>.
(struct dll_info): Add constructor.
<entry>: Remove field.
(all_dlls): Change type to std::list<dll_info>.
* dll.c: Include <algorithm>.
(get_dll): Remove macro.
(all_dlls): Change type to std::list<dll_info *>.
(free_one_dll): Remove.
(match_dll): Likewise.
(loaded_dll): Adjust.
(unloaded_dll): Adjust to all_dlls type change, use
std::find_if.  Inline code from match_dll.
(clear_dlls): Adjust to all_dlls type change.
* server.c (emit_dll_description): Remove.
(handle_qxfer_libraries): Adjust to all_dlls type change,
integrate emit_dll_description's functionality.

Make to_traceframe_info return a unique_ptr

Since this target method returns an allocated object, return a
unique_ptr.  It allows getting rid a some cleanups here and there.

I had to shuffle the includes around.  First, target.h now needs to
include tracepoint.h, to get the definition of traceframe_info_up.
However, the definition of enum trace_find_type was later in target, so
I had to move it to tracepoint.h, so that the declaration of tfind_1
could know about it.  I then had to remove the include of target.h from
tracepoint.h, which caused a circular dependency (it was probably
included to get enum trace_find_type in the first place anyway).

Regression tested on the buildbot.

gdb/ChangeLog:

* target.h: Include tracepoint.h.
(enum trace_find_type): Move to tracepoint.h.
(struct target_ops) <to_traceframe_info>: Return a unique ptr.
* tracepoint.h: Don't include target.h
(enum trace_find_type): Move from target.h.
(parse_traceframe_info): Return a unique ptr.
* tracepoint.c (current_traceframe_info): Change type to unique
ptr.
(free_traceframe_info): Remove.
(clear_traceframe_info): Don't manually free
current_traceframe_info.
(free_result): Remove.
(parse_traceframe_info): Return a unique ptr.
(get_traceframe_info): Adjust to unique ptr.
* ctf.c (ctf_traceframe_info): Return a unique ptr.
* remote.c (remote_traceframe_info): Return a unique ptr.
* tracefile-tfile.c (tfile_traceframe_info): Return a unique
ptr.
* target-debug.h (target_debug_print_traceframe_info_up): New
macro.
* target-delegates.c: Regenerate.

Use std::vector for traceframe_info::memory

Straightforward change from a VEC to std::vector.  This allows making
the destruction of a traceframe_info trivial.

I added a constructor with parameters to mem_range to be able to
emplace_back directly with the values.  It is necessary to leave a
default constructor there because mem_range is still used in a VEC.

gdb/ChangeLog:

* memrange.h (struct mem_range): Add constructors.
* tracepoint.h (struct traceframe_info) <memory>: Change type to
std::vector<mem_range>.
* tracepoint.c (free_traceframe_info): Don't manually free
vector.
(traceframe_info_start_memory): Adjust to vector change.
(traceframe_available_memory): Likewise.
* tracefile-tfile.c (build_traceframe_info): Likewise.
* ctf.c (ctf_traceframe_info): Likewise.

Use std::vector for traceframe_info::tvars

Straightforward change to get rid of a VEC.  We need to new/delete
traceframe_info instead of malloc/free it.  I found three places that
allocate a traceframe_info (ctf_traceframe_info, tfile_traceframe_info
and parse_traceframe_info) and only one that frees it
(free_traceframe_info).

gdb/ChangeLog:

* tracepoint.h (struct traceframe_info) <tvars>: Change type to
std::vector<int>.
* tracepoint.c (free_traceframe_info): Deallocate with delete.
(traceframe_info_start_tvar): Adjust to vector change.
(parse_traceframe_info): Allocate with new.
* ctf.c (ctf_traceframe_info): Allocate with new, adjust to
vector change.
* tracefile-tfile.c (build_traceframe_info): Adjust to vector
change.
tfile_traceframe_info): Allocate with new.
* mi/mi-main.c (mi_cmd_trace_frame_collected): Adjust to vector
change.

Rename traceframe_info variable to current_traceframe_info

... so it doesn't shadow the traceframe_info type.  It think it's a
clearer name anyway.

gdb/ChangeLog:

* tracepoint.c (traceframe_info): Rename to...
(current_traceframe_info): ...this.
(clear_traceframe_info): Adjust.
(get_traceframe_info): Adjust.

Use std::vector in linux_xfer_osdata_processgroups

This simplifies the code quite a bit, by removing the array of PID_T
that's actually an array of pairs of PID_T.

This code is only used to implement "info os procgroups".  I tested by hand
as well as by running gdb.base/info-os.exp for unix, native-gdbserver
and native-extended-gdbserver.

gdb/ChangeLog:

* nat/linux-osdata.c: Include algorithm.
(compare_processes): Remove.
(struct pid_pgid_entry): New struct.
(linux_xfer_osdata_processgroups): Use std::vector instead of
XNEWVEC.

Replace psymbol_allocation_list with std::vector

psymbol_allocation_list is basically a vector implementation.  We can
replace it with an std::vector, now that objfile has been C++-ified.

I sent this to the buildbot, there are a few suspicious failures, but
I don't think they are related to this patch.  For example on powerpc:

new FAIL: gdb.base/catch-syscall.exp: execve: syscall execve has returned
new FAIL: gdb.base/catch-syscall.exp: execve: continue to main
new FAIL: gdb.base/catch-syscall.exp: execve: continue until exit

I get the same failures when testing manually on gcc112, without this
patch.

gdb/ChangeLog:

* objfiles.h: Don't include symfile.h.
(struct partial_symbol): Remove forward-declaration.
(struct objfile) <global_psymbols, static_psymbols>: Change type
to std::vector<partial_symbol *>.
* objfiles.c (objfile::objfile): Don't memset those fields.
(objfile::~objfile): Don't free those fields.
* psympriv.h (struct psymbol_allocation_list): Remove
forward-declaration.
(add_psymbol_to_list): Change psymbol_allocation_list parameter
to std::vector.
(start_psymtab_common): Change parameters to std::vector.
* psymtab.c: Include algorithm.
(require_partial_symbols): Call shrink_to_fit.
(find_pc_sect_psymbol): Adjust to vector change.
(match_partial_symbol): Likewise.
(lookup_partial_symbol): Likewise.
(psym_relocate): Likewise.
(dump_psymtab): Likewise.
(recursively_search_psymtabs): Likewise.
(compare_psymbols): Remove.
(sort_pst_symbols): Adjust to vector change.
(start_psymtab_common): Likewise.
(end_psymtab_common): Likewise.
(psymbol_bcache_full): De-constify return value.
(add_psymbol_to_bcache): Likewise.
(extend_psymbol_list): Remove.
(append_psymbol_to_list): Adjust to vector change.
(add_psymbol_to_list): Likewise.
(init_psymbol_list): Likewise.
(maintenance_info_psymtabs): Likewise.
(maintenance_check_psymtabs): Likewise.
* symfile.h (struct psymbol_allocation_list): Remove.
* symfile.c (reread_symbols): Adjust to vector change.
* dbxread.c (start_psymtab): Change type of parameters.
(dbx_symfile_read): Adjust to vector change.
(read_dbx_symtab): Likewise.
(start_psymtab): Change type of parameters.
* dwarf2read.c (dwarf2_build_psymtabs): Adjust to vector change.
(create_partial_symtab): Likewise.
(add_partial_symbol): Likewise.
(write_one_signatured_type): Likewise.
(recursively_write_psymbols): Likewise.
* mdebugread.c (parse_partial_symbols): Likewise.
* xcoffread.c (xcoff_start_psymtab): Change type of parameters.
(scan_xcoff_symtab): Adjust to vector change.
(xcoff_initial_scan): Likewise.

ada: Use std::string in print_dynamic_range_bound

Replace this usage of GROW_VECT with an std::string.  I don't think
there's a reason for this variable to be static, other than it was
cumbersome to manage its lifetime (i.e. use a cleanup) before.

Tested by comparing the gdb.ada/*.exp test results before and after the
patch.

gdb/ChangeLog:

* ada-typeprint.c (print_dynamic_range_bound): Use std::string.

Automatic date update in version.in

Skip a few tests on targets that can't use the "run" commmand.

These tests want to use raw "run", so skip them on targets that can't
do that.

Also adds a small utility procedure that clearly conveys intent instead of
explicitly checking use_gdb_stub in the testcases.

This makes sure these testcases continue to be skipped with
--target_board=native-gdbserver once that board stops setting
is_remote.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

* lib/gdb.exp (target_can_use_run_cmd): New procedure.
* gdb.base/annota1.exp: Use it instead of is_remote.
* gdb.base/annota3.exp: Use it instead of is_remote.
* gdb.cp/annota2.exp: Use it instead of is_remote.
* gdb.cp/annota3.exp: Use it instead of is_remote.
* gdb.multi/bkpt-multi-exec.exp: Use it instead of is_remote.

Fix gdb.base/testenv.exp against --target_board=native-extended-gdbserver

Currently we get:

  Running ..../src/gdb/testsuite/gdb.base/testenv.exp ...
  FAIL: gdb.base/testenv.exp: test no TEST_GDB var
  FAIL: gdb.base/testenv.exp: test with one TEST_GDB var
  FAIL: gdb.base/testenv.exp: test with two TEST_GDB var
  FAIL: gdb.base/testenv.exp: test with one TEST_GDB var, after unset
  FAIL: gdb.base/testenv.exp: test with TEST_GDB_GLOBAL
  FAIL: gdb.base/testenv.exp: test with TEST_GDB_GLOBAL unset

The problem is that the testcase relies on stdio.  While we could fix
this for gdbserver by read output from inferior_spawn_id, a better fix
it to not rely on stdio at all.  That's what this commit does.
Instead, it reads variables off of the inferior to extract the
necessary information.

Along the way, most of the .exp file is reimplemented/cleaned up using
more modern mechanisms.  E.g., with_test_prefix, proc_with_prefix,
save_vars, etc.  Also, a missing check for "is_remote host" is added.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

* gdb.base/testenv.exp: Check use_gdb_stub instead of is_remote.
(test_num_test_vars, run_and_count_vars, find_env)
(test_set_unset_env, test_inherit_env_var): New procedures.
(top level): Use them.

Don't run gdb.gdb/ selftests if use_gdb_stub is true

If we make the native-gdbserver board be !is_remote, then the few
tests that use the selftest-support.exp routines to debug gdb itself
start running, and fail, with something like:

  Running ..../src/gdb/testsuite/gdb.gdb/selftest.exp ...
  ERROR: tcl error sourcing ..../src/gdb/testsuite/gdb.gdb/selftest.exp.
  ERROR: gdbserver does not support run [....] without extended-remote
      while executing
  "error "gdbserver does not support $command without extended-remote""
      (procedure "gdb_test_multiple" line 25)
      invoked from within
  "gdb_test_multiple "run $INTERNAL_GDBFLAGS" "$description" {
  -re "Starting program.*Breakpoint \[0-9\]+,.*$function \\(\\).* at .*main.c:.*$gdb..."
      (procedure "selftest_setup" line 45)

This commit makes sure those tests continue to be skipped.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

* lib/selftest-support.exp (selftest_setup): Extend comments, and
also skip on stub-like targets.

Make gdb.base/find-unmapped.exp pass on remote targets

Currently, with --target_board=native-extended-gdbserver, we get:

  Running .../src/gdb/testsuite/gdb.base/find-unmapped.exp ...
  FAIL: gdb.base/find-unmapped.exp: find global_var_0, global_var_2, 0xff
  FAIL: gdb.base/find-unmapped.exp: find global_var_1, global_var_2, 0xff
  FAIL: gdb.base/find-unmapped.exp: find global_var_2, (global_var_2 + 16), 0xff

This commit makes the test pass there, and also enables in on
--target_board=native-gdbserver, and other remote targets.

I've filed PR gdb/22293 to track the missing-warning problem.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

PR gdb/22293
* gdb.base/find-unmapped.exp: Don't skip if is_remote target.
(top level): Move some tests to ...
(test_not_found): ... this new procedure.
(top level): Call it.

Simplify tic6x and s390x expedite registers

Nowadays, we have six tic6x expedite registers, which are duplicated.

tic6x-c64xp-expedite = A15,PC
tic6x-c64x-expedite = A15,PC
tic6x-c62x-expedite = A15,PC
tic6x-c64xp-linux-expedite = A15,PC
tic6x-c64x-linux-expedite = A15,PC
tic6x-c62x-linux-expedite = A15,PC

in features/Makefile, we have

   echo "expedite:$(if $($*-expedite),$($*-expedite),$($(firstword $(subst -, ,$(notdir $*)))-expedite))" \
        >> $(outdir)/$*.tmp

which means for a given bar/foo-baz.xml, we'll look for either
bar/foo-baz-expedite or foo-expedite.  We can define only one generic
expedite register for all different ti6cx and s390x target descriptions.
Actually, we've done that for x86 target descriptions.

Re-run 'make GDB=/path/build/gdb all' to regenerate regformats/*.dat files,
and they are not changed.

gdb:

2017-10-13  Yao Qi  <yao.qi@linaro.org>

* features/Makefile: Remove tic6x-*-expedite, add tic6x-expedite.
Remove s390x-*-expedite, add s390x-expedite.

Regenerate features/s390-gs-linux64.c and features/s390x-gs-linux64.c

gdb:

2017-10-13  Yao Qi  <yao.qi@linaro.org>

* features/s390-gs-linux64.c: Regenerated.
* features/s390x-gs-linux64.c: Regenerated.

PR22263 testcase

A number of targets need dynamic relocs in PIEs for reasons other than
relocating thread variables.  The PR is about text relocations, and,
reading between the lines, unnecessary dynamic tprel relocations.
Change the test to check for those conditions rather than no dynamic
relocations

PR ld/22263
* testsuite/ld-elf/tls.exp: Link with -z text.
* testsuite/ld-elf/pr22263-1.rd: Test for tprel relocs.

Change objfile to use new/delete

This changes objfiles to use new and delete rather than xmalloc and
free.  Simon noticed that it uses a non-POD and so shouldn't be
allocated with XCNEW; and I wanted to be able to use another non-POD as
a member; this patch is the result.

Regression tested by the buildbot.

2017-10-13  Tom Tromey  <tom@tromey.com>

* compile/compile-object-run.c (do_module_cleanup): Use delete.
* solib.c (update_solib_list, reload_shared_libraries_1): Use
delete.
* symfile.c (symbol_file_add_with_addrs): Use new.
(symbol_file_add_separate): Update comment.
(syms_from_objfile_1, remove_symbol_file_command): Use delete.
* jit.c (jit_object_close_impl): Use new.
(jit_unregister_code): Use delete.
* objfiles.c (objfile::objfile): Rename from allocate_objfile.
(~objfile): Rename from free_objfile.
(free_objfile_separate_debug, do_free_objfile_cleanup)
(free_all_objfiles, objfile_purge_solibs): Use delete.
* objfiles.h (struct objfile): Add constructor and destructor.
Use DISABLE_COPY_AND_ASSIGN.  Add initializers to data members.
(allocate_objfile, free_objfile): Don't declare.
(struct objstats): Add initializers.

Fix gdb.base/term.exp on non-"target native" boards

With --target_board=native-extended-gdbserver, we get:

  Running .../src/gdb/testsuite/gdb.base/term.exp ...
  FAIL: gdb.base/term.exp: info terminal at breakpoint

  (gdb) info terminal
  No saved terminal information.

Fix it by running the test everywhere, and expecting different output
on non-native targets.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

* gdb.base/term.exp: Don't skip if is_remote target.  Instead,
expect different "info terminal" output if testing with a
non-native target.

Remove is_remote kfail from gdb.python/py-evthreads.exp

This testcase works fine with gdbserver nowadays.  So remove the
kfail.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>
    Simon Marchi  <simon.marchi@polymtl.ca>

PR python/12966
* gdb.python/py-evthreads.exp: Remove is_remote target kfail.

Fix gdb.python/py-evthreads.exp with --target_board=native-extended-gdbserver

Fixes:
  Running ..../src/gdb/testsuite/gdb.python/py-evthreads.exp ...
  FAIL: gdb.python/py-evthreads.exp: run to breakpoint 1
  FAIL: gdb.python/py-evthreads.exp: reached breakpoint 2
  FAIL: gdb.python/py-evthreads.exp: thread 2
  FAIL: gdb.python/py-evthreads.exp: reached breakpoint 3
  FAIL: gdb.python/py-evthreads.exp: thread 3
  FAIL: gdb.python/py-evthreads.exp: continue thread 1
  [... cascading time outs ...]

By following the usual pattern that makes sure that non-stop is enabled
before connecting to gdbserver.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

* gdb.python/py-evthreads.exp: Start GDB with "set non-stop on"
already.

kfail gdb.python/py-evsignal.exp on RSP targets properly

Fixes, with --target_board=native-extended-gdbserver:

   Running ..../src/gdb/testsuite/gdb.python/py-evsignal.exp ...
   FAIL: gdb.python/py-evsignal.exp: signal Thread 3

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

* gdb.python/py-evsignal.exp: Check gdb_protocol instead of
is_remote.

Skip gdb.threads/thread_events.exp on RSP targets properly

Fixes, with --target_board=native-extended-gdbserver:

  Running ..../src/gdb/testsuite/gdb.threads/thread_events.exp ...
  FAIL: gdb.threads/thread_events.exp: continue to after_join_func with messages enabled (saw 0, expected 1)

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

* gdb.threads/thread_events.exp: Check gdb_protocol instead of
is_remote.

Tweak gdb.base/corefile.exp is_remote check

1. Otherwise, when we make native-gdbserver board no longer is_remote,
   we get:

  Running .../src/gdb/testsuite/gdb.base/corefile.exp ...
  ERROR: tcl error sourcing .../src/gdb/testsuite/gdb.base/corefile.exp.
  ERROR: gdbserver does not support attach 9327 without extended-remote
      while executing
  "error "gdbserver does not support $command without extended-remote""

  That's fixed by using can_spawn_for_attach instead.

2. The gdb_protocol check fixes this current problem with
   --target_board=extended-remote-gdbserver:

     Running .../src/gdb/testsuite/gdb.base/corefile.exp ...
     FAIL: gdb.base/corefile.exp: run: with core
     FAIL: gdb.base/corefile.exp: run: core file is cleared
     FAIL: gdb.base/corefile.exp: attach: with core
     FAIL: gdb.base/corefile.exp: attach: core file is cleared

   gdb.log:
     (...)
     attach 10859
     Don't know how to attach.  Try "help target".
     (...)

The fix for #2 alone would fix #1 too, but can_spawn_for_attach
expresses the requirement directly, so I still left it there.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

* gdb.base/corefile.exp (corefile_test_run): Skip if gdb_protocol
is set.
(corefile_test_attach): Likewise.  Check can_spawn_for_attach
instead of is_remote.