platform/upstream/binutils.git
6 years agold: Add tests for -z separate-code and -z noseparate-code
H.J. Lu [Fri, 12 Jan 2018 03:17:46 +0000 (19:17 -0800)]
ld: Add tests for -z separate-code and -z noseparate-code

Verify that -z separate-code works and -z noseparate-code doesn't disable
-z relro.

PR ld/22393
* testsuite/ld-elf/pr16322.d: Add -z noseparate-code.
* testsuite/ld-elf/pr22393-1.s: New file.
* testsuite/ld-elf/pr22393-1a.d: Likewise.
* testsuite/ld-elf/pr22393-1b.d: Likewise.
* testsuite/ld-elf/pr22393-1c.d: Likewise.
* testsuite/ld-elf/pr22393-1d.d: Likewise.
* testsuite/ld-elf/pr22393-1e.d: Likewise.
* testsuite/ld-elf/pr22393-1f.d: Likewise.
* testsuite/ld-elf/pr22393-2a.c: Likewise.
* testsuite/ld-elf/pr22393-2a.rd: Likewise.
* testsuite/ld-elf/pr22393-2b.c: Likewise.
* testsuite/ld-elf/pr22393-2b.rd: Likewise.
* testsuite/ld-elf/shared.exp: Run tests for -z separate-code.

6 years agold: Create a new LOAD segment for separate code segment
H.J. Lu [Fri, 12 Jan 2018 03:04:55 +0000 (19:04 -0800)]
ld: Create a new LOAD segment for separate code segment

When generating separate code LOAD segment, create a new LOAD segment
if the previous section contains text and the current section doesn't
or vice versa:

Elf file type is DYN (Shared object file)
Entry point 0x200020
There are 7 program headers, starting at offset 52

Program Headers:
  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
  LOAD           0x000000 0x00000000 0x00000000 0x00200 0x00200 R   0x200000
  LOAD           0x200000 0x00200000 0x00200000 0x00036 0x00036 R E 0x200000
  LOAD           0x400000 0x00400000 0x00400000 0x00064 0x00064 R   0x200000
  LOAD           0x400f80 0x00600f80 0x00600f80 0x000a0 0x000a0 RW  0x200000
  DYNAMIC        0x400f80 0x00600f80 0x00600f80 0x00080 0x00080 RW  0x4
  GNU_STACK      0x000000 0x00000000 0x00000000 0x00000 0x00000 RW  0x10
  GNU_RELRO      0x400f80 0x00600f80 0x00600f80 0x00080 0x00080 R   0x1

 Section to Segment mapping:
  Segment Sections...
   00     .hash .gnu.hash .dynsym .dynstr .rela.plt
   01     .plt .text
   02     .rodata .eh_frame
   03     .dynamic .got.plt
   04     .dynamic
   05
   06     .dynamic

to prevent fetching or executing data in code pages as instructions.

Also don't put a writable section in a read-only segment if there is a
RELRO segment.

Since code segment is aligned and padded to the maximum page size on
disk, the minimum file size is bigger than the maximum page size which
is 2MB (0x200000):

-rwxr-xr-x 1 hjl hjl 4201932 Jan 10 10:41 libfoo.so

"-z max-page-size=0x1000" can be used to reduce the maximum page size to
4KB (0x1000):

-rwxr-xr-x 1 hjl hjl   15820 Jan 10 10:44 libfoo.so

PR ld/22393
* elf.c (_bfd_elf_map_sections_to_segments): When generating
separate code and read-only data LOAD segments, create a new
LOAD segment if the previous section contains text and the
current section doesn't or vice versa.  Don't put a writable
section in a read-only segment if there is a RELRO segment.

6 years agold: Add "-z separate-code" option to ELF linker
H.J. Lu [Fri, 12 Jan 2018 03:01:39 +0000 (19:01 -0800)]
ld: Add "-z separate-code" option to ELF linker

The new "-z separate-code" option will generate separate code LOAD
segment which must be in wholly disjoint pages from any other data.

include/

PR ld/22393
* bfdlink.h (bfd_link_info): Add separate_code.

ld/

PR ld/22393
* NEWS: Mention "-z separate-code".
* emultempl/elf32.em (gld${EMULATION_NAME}_get_script): Get
builtin linker scripts and return linker scripts from disk for
"-z separate-code".
(gld${EMULATION_NAME}_handle_option): Handle "-z separate-code"
and "-z noseparate-code".
* genscripts.sh: Generate linker scripts for "-z separate-code".
(LD_FLAG): Set to *textonly for "-z separate-code".
* ld.texinfo: Document "-z separate-code".
* lexsup.c (elf_shlib_list_options): Add linker help messsages
for "-z separate-code" and "-z noseparate-code".
* scripttempl/elf.sc (SEPARATE_TEXT): New
(TEXT_SEGMENT_ALIGN): Likewise.
Use ${TEXT_SEGMENT_ALIGN} to align and pad text segment to
${MAXPAGESIZE}.

6 years agogdb_compile_shlib: Only consider shlib= options when building executables
Simon Marchi [Fri, 12 Jan 2018 02:08:23 +0000 (21:08 -0500)]
gdb_compile_shlib: Only consider shlib= options when building executables

Trying to use gdb_compile_shlib with the shlib= option to build a shared
library that depends on another shared library does not work as of
today.  See:

  https://sourceware.org/ml/gdb-patches/2017-10/msg00733.html

The problem is that building the lib is done in two steps, compilation
(.c -> .o) and linking (.o -> .so) and the shlib= options are passed to
both steps.  When compiling the object file (.o), it results in gcc
complaining:

  gcc: warning: .../solib-vanish-lib2.so: linker input file unused because linking not done

The first solution I came up with was to filter the options inside
gdb_compile_shlib to remove the shlib= options from the options we pass
when compiling the .o file.

I then thought it would be simpler to ignore the shlib= options in
gdb_compile when not building an executable (the executable category
includes the shared libraries).  For other compilation types (object
file, preprocess and generate assembly), it doesn't make sense to add
shared libraries to the source file list.

Regtested on the buildbot.

gdb/testsuite/ChangeLog:

* lib/gdb.exp (gdb_compile): Ignore shlib= and shlib_load
options when not creating an executable.

6 years agoAutomatic date update in version.in
GDB Administrator [Fri, 12 Jan 2018 00:00:23 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoIgnore dynamic references on forced local symbols
H.J. Lu [Thu, 11 Jan 2018 23:36:40 +0000 (15:36 -0800)]
Ignore dynamic references on forced local symbols

We should ignore dynamic references on forced local symbols during
garbage collection since they can never be referenced dynamically.

bfd/

PR ld/22649
* elflink.c (bfd_elf_gc_mark_dynamic_ref_symbol): Ignore dynamic
references on forced local symbols.

ld/

PR ld/22649
* testsuite/ld-elf/pr22649-1.s: New file.
* testsuite/ld-elf/pr22649-2a.s: Likewise.
* testsuite/ld-elf/pr22649-2b.s: Likewise.
* testsuite/ld-elf/pr22649.msg: Likewise.
* testsuite/ld-elf/shared.exp: Run ld/22649 tests.

6 years agogdb.base/breakpoint-in-ro-region.exp regression on sss targets (PR gdb/22583)
Pedro Alves [Thu, 11 Jan 2018 17:50:31 +0000 (17:50 +0000)]
gdb.base/breakpoint-in-ro-region.exp regression on sss targets (PR gdb/22583)

As Maciej reported at
<https://sourceware.org/ml/gdb-patches/2017-12/msg00212.html>, this
commit:

 commit d930703d68ae160ddfe8ebe5fdcf416fb6090e1e
 Date: Thu Nov 16 18:44:43 2017 +0000
 Subject: Don't ever Quit out of resume

caused regressions on software single-set targets, specifically:

 FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: single-step breakpoint is not left behind
 FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw on: single-step breakpoint is not left behind
 FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted on: auto-hw off: step in ro region (cannot insert hw break)
 FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted on: auto-hw off: single-step breakpoint is not left behind
 FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted on: auto-hw on: single-step breakpoint is not left behind

and indeed detailed logs indicate a breakpoint is left lingering, e.g.:

 (gdb) PASS: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: step in ro region (cannot insert sw break)
 maint info breakpoints 0
 Num     Type           Disp Enb Address    What
 0       sw single-step keep y   0x00400774 in main at [...]/gdb/testsuite/gdb.base/breakpoint-in-ro-region.c:24 inf 1 thread 1
 stop only in thread 1
 (gdb) FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: single-step breakpoint is not left behind

vs:

 (gdb) PASS: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: step in ro region (cannot insert sw break)
 maint info breakpoints 0
 No breakpoint or watchpoint matching '0'.
 (gdb) PASS: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: single-step breakpoint is not left behind

as at commit d930703d68ae^.

Before commit d930703d68ae, we had a cleanup installed in 'resume'
that would delete single-step breakpoints on error:

  /* Resuming.  */

  /* Things to clean up if we QUIT out of resume ().  */
  static void
  resume_cleanups (void *ignore)
  {
    if (!ptid_equal (inferior_ptid, null_ptid))
     delete_single_step_breakpoints (inferior_thread ());

    normal_stop ();
  }

That whole function was removed by d930703d68ae mainly to eliminate
the normal_stop call:

~~~~
    Note that the exception called from within resume ends up calling
    normal_stop via resume_cleanups.  That's very borked though, because
    normal_stop is going to re-handle whatever was the last reported
    event, possibly even re-running a hook stop...
~~~~

But as the regression shows, removing resume_cleanups completely went
a bit too far, as the delete_single_step_breakpoints call is still
necessary.

So fix the regression by reinstating the
delete_single_step_breakpoints call on error.  However, since we're
trying to eliminate cleanups, restore it in a different form (using
TRY/CATCH).

Tested on x86-64 GNU/Linux both top of master and on top of a series
that implements software single-step on x86.

gdb/ChangeLog:
2018-01-11  Pedro Alves  <palves@redhat.com>

PR gdb/22583
* infrun.c (resume): Rename to ...
(resume_1): ... this.
(resume): Reimplement as wrapper around resume_1.

6 years agold: Keep PREINIT_ARRAY/INIT_ARRAY/FINI_ARRAY sections for -r --gc-sections
H.J. Lu [Thu, 11 Jan 2018 17:42:12 +0000 (09:42 -0800)]
ld: Keep PREINIT_ARRAY/INIT_ARRAY/FINI_ARRAY sections for -r --gc-sections

We must keep all PREINIT_ARRAY, INIT_ARRAY as well as FINI_ARRAY sections
for ld -r --gc-sections.

bfd/

PR ld/22677
* elflink.c (bfd_elf_gc_sections): Keep all PREINIT_ARRAY,
INIT_ARRAY as well as FINI_ARRAY sections for ld -r --gc-sections.

ld/

PR ld/22677
* scripttempl/elf.sc (PREINIT_ARRAY): New.
Don't add .preinit_array for ld -r.
* testsuite/ld-elf/pr22677.d: New file.
* testsuite/ld-elf/pr22677.s: Likewise.

6 years agold: Remove unused expression state
Andrew Burgess [Fri, 5 Jan 2018 14:59:05 +0000 (14:59 +0000)]
ld: Remove unused expression state

Previous commit removed all uses of the defsym field within the linker
expression union.  This commit cleans up the now redundant state.

ld/ChangeLog:

* ldexp.h (union etree_union): Remove defsym field.
* ldexp.c (exp_assop): Remove defsym parameter, and use of defsym
parameter.
(exp_assign): Remove passing of defsym parameter.
(exp_defsym): Likewise.
(exp_provide): Likewise.

6 years agold: Fix issue where PROVIDE overrides defined symbol
Andrew Burgess [Thu, 27 Apr 2017 17:05:08 +0000 (18:05 +0100)]
ld: Fix issue where PROVIDE overrides defined symbol

In a linker script, a sequence like this:

  foo = ADDR (.some_section);
  bar = foo;
  PROVIDE (foo = 0);

will result in 'bar = ADDR (.some_section)' and 'foo = 0', which seems
like incorrect behaviour, foo is clearly defined elsewhere, and so the
PROVIDE should not trigger.

The problem is that an expression like this:

    foo = ADDR (.some_section);

can't be evaluated until a late phase of the linker, due to the need
for the section '.some_section' to have been placed, then the PROVIDE
was being marked as being used during an earlier phase.  At the end of
the link, both lines:

    foo = ADDR (.some_section);
    PROVIDE (foo = 0);

are active, and this causes the final value of 'foo' to be 0.

The solution proposed in this commit is that, during earlier phases of
the linker, when we see the expression 'foo = ADDR (.some_section);',
instead of ignoring the expression, we create a "fake" definition of
'foo'.  The existence of this "fake" definition prevents the PROVIDE
from being marked used, and during the final phase the real definition
of 'foo' will replace the "fake" definition.

The new test provide-6 covers the exact case described above.  The
provide-7 test is similar to the above, but using constant
expressions, this was never broken, but is added here to increase
coverage.

The provide-8 case also didn't fail before this commit, but I did
manage to break this case during development of this patch.  This case
was only covered by a mmix test before, so I've added this here to
increase coverage.

ld/ChangeLog:

* ldexp.c (exp_fold_tree_1): Rework condition underwhich provide
nodes are ignored in the tree walk, and move the location at which
we change provide nodes into provided nodes.
(exp_init_os): Add etree_provided.
* testsuite/ld-scripts/provide-6.d: New file.
* testsuite/ld-scripts/provide-6.t: New file.
* testsuite/ld-scripts/provide-7.d: New file.
* testsuite/ld-scripts/provide-7.t: New file.
* testsuite/ld-scripts/provide-8.d: New file.
* testsuite/ld-scripts/provide-8.t: New file.

6 years agold: Find and run some tests using a wildcard pattern
Andrew Burgess [Thu, 27 Apr 2017 16:53:28 +0000 (17:53 +0100)]
ld: Find and run some tests using a wildcard pattern

Find the ld-script/provide-*.d tests using a wildcard, then run them in
a loop.  This will make it easier to add more tests in the future.  Some
associated clean up is required.

ld/ChangeLog:

* testsuite/ld-scripts/provide-3.d: Add xfail directive.
* testsuite/ld-scripts/provide-4.d: Use new map file name.
* testsuite/ld-scripts/provide-5.d: Use new map file name.
* testsuite/ld-scripts/provide-4-map.d: Renamed to...
* testsuite/ld-scripts/provide-4.map: ...this.
* testsuite/ld-scripts/provide-5-map.d: Renamed to...
* testsuite/ld-scripts/provide-5.map: ...this.
* testsuite/ld-scripts/provide.exp: Move xfail into provide-3.d
file, and run tests in a loop.

6 years agold: In map file use '=' in PROVIDE statements
Andrew Burgess [Fri, 5 Jan 2018 22:41:55 +0000 (22:41 +0000)]
ld: In map file use '=' in PROVIDE statements

Currently when recording a PROVIDE statement in a linker map file we
display something like:

    PROVIDE (SYMBOL, VALUE)

However, in a linker script we write these statements like this:

    PROVIDE (SYMBOL = VALUE);

This commit changes the output in the map file to be closer to linker
script format, the map file now contains:

    PROVIDE (SYMBOL = VALUE)

The ';' is still missing from the end, but map files are not intended
to be valid linker script input, so adding the ';' just seems like
clutter.

ld/ChangeLog:

* ldexp.c (exp_print_tree): Use '=' instead of ',' when printing
PROVIDE statements.
* testsuite/ld-scripts/provide-4.map: Update expected output.
* testsuite/ld-scripts/provide-5.map: Likewise.

6 years agoFix the order of SHLIB_RODATA_ADDR in elf.sc
H.J. Lu [Thu, 11 Jan 2018 13:05:25 +0000 (05:05 -0800)]
Fix the order of SHLIB_RODATA_ADDR in elf.sc

elf.sc has

  if test -n "${RODATA_ADDR}"; then
    RODATA_ADDR="\
SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR}) + SIZEOF_HEADERS"
  else
    RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
    ^^^^^^^^^^ Set RODATA_ADDR
    RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR})"
    ^^^^^^^^^^ Set RODATA_ADDR with ${RODATA_ADDR}
  fi
  if test -n "${SHLIB_RODATA_ADDR}"; then
    SHLIB_RODATA_ADDR="\
SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR}) + SIZEOF_HEADERS"
  else
    SHLIB_RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR})"
    ^^^^^^^^^^ Set SHLIB_RODATA_ADDR
    SHLIB_RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
    ^^^^^^^^^^ Override SHLIB_RODATA_ADDR
  fi

The order should be:

  if test -n "${SHLIB_RODATA_ADDR}"; then
    SHLIB_RODATA_ADDR="\
SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR}) + SIZEOF_HEADERS"
  else
    SHLIB_RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
    SHLIB_RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR})"
  fi

PR ld/22696
* scripttempl/elf.sc: Fix the order of SHLIB_RODATA_ADDR.

6 years agoFix gdb.texinfo for old makeinfo
Szabolcs Nagy [Thu, 11 Jan 2018 12:13:39 +0000 (12:13 +0000)]
Fix gdb.texinfo for old makeinfo

With old makeinfo (version 4.13) the changes introduced in

commit 2d97a5d9d33aea87c3bd02fd1fa417f5d4e1fa05
Author:     John Baldwin <jhb@FreeBSD.org>

    Document support for 'info proc' on FreeBSD.

fail to build.

gdb/doc/ChangeLog:

* gdb.texinfo (pwd): Fix whitespace.

6 years agoFix backwards compatibility with old GDBservers (PR remote/22597)
Pedro Alves [Thu, 11 Jan 2018 00:23:04 +0000 (00:23 +0000)]
Fix backwards compatibility with old GDBservers (PR remote/22597)

At <https://sourceware.org/ml/gdb-patches/2017-12/msg00285.html>,
Maciej reported that commit:

  commit 5cd63fda035d4ba949e6478406162c4673b3c9ef
  Date: Wed Oct 4 18:21:10 2017 +0100
  Subject: Fix "Remote 'g' packet reply is too long" problems with multiple inferiors

made GDB stop working with older stubs.  Any attempt to continue
execution after the initial connection fails with:

  [...]
  Process .../gdb/testsuite/outputs/gdb.base/advance/advance created; pid = 2670
  Listening on port 2346
  target remote [...]:2346
  Remote debugging using [...]:2346
  Reading symbols from .../lib64/ld.so.1...done.
  [Switching to Thread <main>]
  (gdb) continue
  Cannot execute this command without a live selected thread.
  (gdb)

The problem is:

  (gdb) c
  Cannot execute this command without a live selected thread.
  (gdb) info threads
    Id   Target Id         Frame
    1    Thread 14917      0x00007f341cd98ed0 in _start () from /lib64/ld-linux-x86-64.so.2

  The current thread <Thread ID 2> has terminated.  See `help thread'.
      ^^^^^^^^^^^
  (gdb)

Note, thread _2_.  There's really only one thread in the inferior
(it's still at the entry point), but still GDB added a bogus second
thread.

The reason GDB started adding a second thread after 5cd63fda035d is
this hunk:

+                 if (event->ptid == null_ptid)
+                   {
+                     const char *thr = strstr (p1 + 1, ";thread:");
+                     if (thr != NULL)
+                       event->ptid = read_ptid (thr + strlen (";thread:"),
+                                                NULL);
+                     else
+                       event->ptid = magic_null_ptid;
+                   }

Note the else branch that falls back to magic_null_ptid.  We reach
that when we process the initial stop reply sent back in response to
the the "?" (status) packet early in the connection setup:

 Sending packet: $?#3f...Ack
 Packet received: T0506:0000000000000000;07:40a510f4fd7f0000;10:d0fe1201577f0000;

And note that that response does not include a ";thread:XXX" part.

This stop reply is processed after listing threads with qfThreadInfo /
qsThreadInfo :

 Sending packet: $qfThreadInfo#bb...Ack
 Packet received: m3915
 Sending packet: $qsThreadInfo#c8...Ack
 Packet received: l

meaning, when we process that stop reply, we treat the event as coming
from a thread with ptid == magic_null_ptid, which is not yet in the
thread list, so we add it then:

  (top-gdb) p ptid
  $1 = {m_pid = 42000, m_lwp = -1, m_tid = 1}
  (top-gdb) bt
  #0  0x0000000000840a8c in add_thread_silent(ptid_t) (ptid=...) at src/gdb/thread.c:269
  #1  0x00000000007ad61d in remote_add_thread(ptid_t, int, int) (ptid=..., running=0, executing=0)
      at src/gdb/remote.c:1838
  #2  0x00000000007ad8de in remote_notice_new_inferior(ptid_t, int) (currthread=..., executing=0)
      at src/gdb/remote.c:1921
  #3  0x00000000007b758b in process_stop_reply(stop_reply*, target_waitstatus*) (stop_reply=0x1158860, status=0x7fffffffcc00)
      at src/gdb/remote.c:7217
  #4  0x00000000007b7a38 in remote_wait_as(ptid_t, target_waitstatus*, int) (ptid=..., status=0x7fffffffcc00, options=0)
      at src/gdb/remote.c:7380
  #5  0x00000000007b7cd1 in remote_wait(target_ops*, ptid_t, target_waitstatus*, int) (ops=0x102fac0 <remote_ops>, ptid=..., status=0x7fffffffcc00, options=0) at src/gdb/remote.c:7446
  #6  0x000000000081587b in delegate_wait(target_ops*, ptid_t, target_waitstatus*, int) (self=0x102fac0 <remote_ops>, arg1=..., arg2=0x7fffffffcc00, arg3=0) at src/gdb/target-delegates.c:138
  #7  0x0000000000827d77 in target_wait(ptid_t, target_waitstatus*, int) (ptid=..., status=0x7fffffffcc00, options=0)
      at src/gdb/target.c:2179
  #8  0x0000000000715fda in do_target_wait(ptid_t, target_waitstatus*, int) (ptid=..., status=0x7fffffffcc00, options=0)
      at src/gdb/infrun.c:3589
  #9  0x0000000000716351 in wait_for_inferior() () at src/gdb/infrun.c:3707
  #10 0x0000000000715435 in start_remote(int) (from_tty=1) at src/gdb/infrun.c:3212

things go downhill from this.

We don't see the problem with current master gdbserver, because that
version always sends the ";thread:" part in the initial stop reply:

 Sending packet: $?#3f...Packet received: T0506:0000000000000000;07:a0d4ffffff7f0000;10:d05eddf7ff7f0000;thread:p3cea.3cea;core:3;

Years ago I had added a "--disable-packet=" command line option to
gdbserver which comes in handy for testing this, since the existing
"--disable-packet=Tthread" precisely makes gdbserver not send that
";thread:" part in stop replies.  The testcase added by this commit
emulates old gdbserver making use of that.

I've compared a testrun at 5cd63fda035d^ (before regression) with
'current master+patch', against old gdbserver at f8b73d13b7ca^.  I
hacked out --once, and "monitor exit" to be able to test.  The results
are a bit too unstable to tell accurately, but it looked like there
were no regressions.  Maciej confirmed this worked for him as well.

No regressions on master (against master gdbserver).

gdb/ChangeLog:
2018-01-11  Pedro Alves  <palves@redhat.com>

PR remote/22597
* remote.c (remote_parse_stop_reply): Default to the last-set
general thread instead of to 'magic_null_ptid'.

gdb/testsuite/ChangeLog:
2018-01-11  Pedro Alves  <palves@redhat.com>

PR remote/22597
* gdb.server/stop-reply-no-thread.c: New file.
* gdb.server/stop-reply-no-thread.exp: New file.

6 years agoRemove VL variants for 4FMAPS and 4VNNIW insns.
Igor Tsimbalist [Wed, 10 Jan 2018 23:56:45 +0000 (02:56 +0300)]
Remove VL variants for 4FMAPS and 4VNNIW insns.

AVX512_4FMAPS and AVX512_4VNNIW insns are marked as having AVX512VL
variants.  That is wrong as SDM doesn't define such instructions. The
patch removes these VL variants.

gas/
* testsuite/gas/i386/avx512_4fmaps-warn.l: Change xmm to zmm.
* testsuite/gas/i386/avx512_4fmaps-warn.s: Likewise.
* testsuite/gas/i386/avx512_4fmaps_vl-intel.d: Delete.
* testsuite/gas/i386/avx512_4fmaps_vl-warn.l: Likewise.
* testsuite/gas/i386/avx512_4fmaps_vl-warn.s: Likewise.
* testsuite/gas/i386/avx512_4fmaps_vl.d: Likewise.
* testsuite/gas/i386/avx512_4fmaps_vl.s: Likewise.
* testsuite/gas/i386/avx512_4vnniw_vl-intel.d: Likewise.
* testsuite/gas/i386/avx512_4vnniw_vl.d: Likewise.
* testsuite/gas/i386/avx512_4vnniw_vl.s: Likewise.
* testsuite/gas/i386/i386.exp: Delete _vl tests for 4fmaps an
4vnniw tests.
* testsuite/gas/i386/x86-64-avx512_4fmaps_vl-intel.d: Delete.
* testsuite/gas/i386/x86-64-avx512_4fmaps_vl-warn.l: Likewise.
* testsuite/gas/i386/x86-64-avx512_4fmaps_vl-warn.s: Likewise.
* testsuite/gas/i386/x86-64-avx512_4fmaps_vl.d: Likewise.
* testsuite/gas/i386/x86-64-avx512_4fmaps_vl.s: Likewise.
* testsuite/gas/i386/x86-64-avx512_4vnniw_vl-intel.d: Likewise.
* testsuite/gas/i386/x86-64-avx512_4vnniw_vl.d: Likewise.
* testsuite/gas/i386/x86-64-avx512_4vnniw_vl.s: Likewise.

opcodes/
* i386-opc.tbl: Remove VL variants for 4FMAPS and 4VNNIW
insns.
* i386-tbl.h: Regenerate.

6 years agoAutomatic date update in version.in
GDB Administrator [Thu, 11 Jan 2018 00:00:23 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agogas tc-arm.c warning fix
Alan Modra [Wed, 10 Jan 2018 23:04:58 +0000 (09:34 +1030)]
gas tc-arm.c warning fix

* config/tc-arm.c (aeabi_set_public_attributes): Avoid false
positive "‘profile’ may be used uninitialized".

6 years agolanguage_get_symbol_name_matcher -> get_symbol_name_matcher
Pedro Alves [Wed, 10 Jan 2018 20:38:08 +0000 (20:38 +0000)]
language_get_symbol_name_matcher -> get_symbol_name_matcher

Rename language_get_symbol_name_matcher -> get_symbol_name_matcher,
since the function is no longer a straight "language method".

gdb/ChangeLog:
2018-01-10  Pedro Alves  <palves@redhat.com>

* language.h (language_get_symbol_name_matcher): Rename ...
(get_symbol_name_matcher): ... this.
* language.c (language_get_symbol_name_matcher): Ditto.
* dictionary.c, linespec.c, minsyms.c, psymtab.c, symtab.c: All
callers adjusted.

6 years agoAda: make verbatim matcher override other language matchers (PR gdb/22670)
Pedro Alves [Wed, 10 Jan 2018 20:38:07 +0000 (20:38 +0000)]
Ada: make verbatim matcher override other language matchers (PR gdb/22670)

A previous patch fixed verbatim matching in the lookup at the minimal
symbol level, but we should also be finding that same symbol through
the partial/full symtab search.

For example, this is what happens if we use "print" instead of
"break":

    (gdb) p <MixedCaseFunc>
    $1 = {<text variable, no debug info>} 0x4024dc <MixedCaseFunc>

Before the C++ wildmatching series, GDB knows that MixedCaseFunc is a
function without parameters, and the expression above means calling
it.  If you try it before having started the inferior, you'd get the
following (expected) error:

    (gdb) print  <MixedCaseFunc>
    You can't do that without a process to debug.

The main idea behind making the name matcher be determined by the
symbol's language is so that C++ (etc.) wildmatching in linespecs
works even if the current language is not C++, as e.g., when you step
through C or assembly code.

Ada's verbatim matching syntax however ("<...>") isn't quite the same.
It is more a property of the current language than of a particular
symbol's language.  We want to support this syntax when debugging an
Ada program, but it's reason of existence is to find non-Ada symbols.
This suggests going back to enabling it depending on current language
instead of language of the symbol being matched.

I'm not entirely happy with the "current_language" reference (though I
think that it's harmless).  I think we could try storing the current
language in the lookup_name_info object, and then convert a bunch of
functions more to pass around lookup_name_info objects instead of
"const char *" names.  I.e., build the lookup_name_info higher up.
I'm not sure about that, I'll have to think more about it.  Maybe
something different will be better.  Meanwhile, this gets us going.

I've extended the testcase to also exercise a no-debug-info function,
for extra coverage of the minsyms-only paths.

gdb/ChangeLog:
2018-01-10  Pedro Alves  <palves@redhat.com>

PR gdb/22670
* dwarf2read.c
(gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher):
Adjust to use language_get_symbol_name_matcher instead of
language_defn::la_get_symbol_name_matcher.
* language.c (language_get_symbol_name_matcher): If in Ada mode
and the lookup name is a verbatim match, return Ada's matcher.
* language.h (language_get_symbol_name_matcher): Adjust comment.
(ada_lookup_name_info::verbatim_p):: New method.

gdb/testsuite/ChangeLog:
2018-01-10  Pedro Alves  <palves@redhat.com>

PR gdb/22670
* gdb.ada/bp_c_mixed_case.exp: Add intro comment.  Test printing C
functions too.  Test setting breakpoints and printing C functions
with no debug info too.
* gdb.ada/bp_c_mixed_case/qux.c: New file.

6 years agoFix gdb.ada/complete.exp's "complete break ada" test (PR gdb/22670)
Pedro Alves [Wed, 10 Jan 2018 20:38:07 +0000 (20:38 +0000)]
Fix gdb.ada/complete.exp's "complete break ada" test (PR gdb/22670)

This patch fixes the regression covered by the test added by:

    commit 344420da6beac1e0b2f7964e7101f8dcdb509b0d
    Date: Thu Jan 4 03:30:37 2018 -0500
    Subject: Add "complete break ada" test to gdb.ada/complete.exp

The regression had been introduced by:

    commit b5ec771e60c1a0863e51eb491c85c674097e9e13
    Date:   Wed Nov 8 14:22:32 2017 +0000
    Subject: Introduce lookup_name_info and generalize Ada's FULL/WILD name matching

The gist of it is that linespec completion in Ada mode is generating
additional matches that should not appear in the match list
(internally generated symbols, or symbols that should be enclosed
between "<...>").  These extraneous entries have uppercase characters, such as:

    break ada__stringsS
    break ada__strings__R11s
    [etc]

These matches come from minimal symbols.  The problem is that Ada
minsyms end up with no language set (language_auto), and thus we end
up using the generic symbol name matcher for those instead of Ada's.
We already had a special case for in compare_symbol_name to handle
this, but it was limited to expressions, while the case at hand is
completing a linespec.  Fix this by applying the special case to
linespec completion as well.  I.e., remove the EXPRESSION check from
compare_symbol_name.  That alone turns out to not be sufficient still
-- GDB would still show a couple entries that shouldn't be there:

~~
    break ada__exceptions__exception_data__append_info_exception_name__2Xn
    break ada__exceptions__exception_data__exception_name_length__2Xn
~~

The reason is that these minimal symbols end up with their language
set to language_cplus / C++, because those encoded names manage to
demangle successfully as C++ symbols (using an old C++ mangling
scheme):

  $ echo ada__exceptions__exception_data__append_info_exception_name__2Xn | c++filt
  Xn::ada__exceptions__exception_data__append_info_exception_name(void)

It's unfortunate that Ada's encoding scheme doesn't start with some
unique prefix like "_Z" in the C++ Itanium ABI mangling scheme.  For
now, paper over that by treating C++ minsyms as Ada minsyms.

gdb/ChangeLog:
2018-01-10  Pedro Alves  <palves@redhat.com>

        PR gdb/22670
* ada-lang.c (ada_collect_symbol_completion_matches): If the
minsym's language is language_auto or language_cplus, pass down
language_ada instead.
* symtab.c (compare_symbol_name): Don't frob symbol language here.

gdb/testsuite/ChangeLog:
2018-01-10  Pedro Alves  <palves@redhat.com>

        PR gdb/22670
* gdb.ada/complete.exp ("complete break ada"): Replace kfail with
a fail.

6 years agoFix gdb.ada/bp_c_mixed_case.exp (PR gdb/22670)
Pedro Alves [Wed, 10 Jan 2018 20:38:06 +0000 (20:38 +0000)]
Fix gdb.ada/bp_c_mixed_case.exp (PR gdb/22670)

The problem here is that we are using the user-provided lookup name
literally for name comparisons.  I.e., "<MixedCase>" with the "<>"s
included.

This commit fixes the minsym lookup case.  psymbol/symbol lookup will
be fixed in a follow up.

In the minsym case, we're using using the user-provided lookup name
literally for linkage name comparisons.  That obviously can't work
since the "<>" are not really part of the linkage name.

The original idea was that we'd use the symbol's language to select
the right symbol name matching algorithm, but that doesn't work for
Ada because it's not really possible to unambiguously tell from the
linkage name alone whether we're dealing with Ada symbols, so Ada
minsyms end up with no language set, or sometimes C++ set.

So fix this by treating Ada mode specially when determining the
linkage name to match against.

gdb/ChangeLog:
2018-01-10  Pedro Alves  <palves@redhat.com>

PR gdb/22670
* minsyms.c (linkage_name_str): New function.
(iterate_over_minimal_symbols): Use it.

gdb/testsuite/ChangeLog:
2018-01-10  Pedro Alves  <palves@redhat.com>

PR gdb/22670
* gdb.ada/bp_c_mixed_case.exp: Remove setup_kfail calls.

6 years agooops - updates to ChangeLog omitted by accident from previous delta.
Nick Clifton [Wed, 10 Jan 2018 15:35:34 +0000 (15:35 +0000)]
oops - updates to ChangeLog omitted by accident from previous delta.

6 years agoUpdate top level configure files by synchronizing them with gcc.
Nick Clifton [Wed, 10 Jan 2018 15:29:21 +0000 (15:29 +0000)]
Update top level configure files by synchronizing them with gcc.

. * config-ml.in: Sync with gcc sources.
* config.guess: Likewise.
* config.sub: Likewise.
* configure.ac: Likewise.
* configure: Regenerate.

config * Sync with GCC sources:

2017-11-14 Boris Kolpackov  <boris@codesynthesis.com>

* gcc-plugin.m4: Add support for MinGW.

2017-11-17  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

* cet.m4: New file.

2017-11-15  Alexandre Oliva <aoliva@redhat.com>

* bootstrap-debug-lean.mk (do-compare): Use the
contrib/compare-debug script.

2017-10-24  H.J. Lu  <hongjiu.lu@intel.com>

* bootstrap-cet.mk: New file.

2017-06-19  Martin Liska  <mliska@suse.cz>

* bootstrap-lto-noplugin.mk: Enable -flto in all PGO stages.
* bootstrap-lto.mk: Likewise.

2017-06-03  Eric Botcazou  <ebotcazou@adacore.com>

* mt-android: New file.

2017-02-13  Richard Biener  <rguenther@suse.de>

* isl.m4: Remove support for ISL 0.14.

2017-01-19  Uros Bizjak  <ubizjak@gmail.com>

PR target/78478
* ax_check_define.m4: New file.

2017-01-17  Jakub Jelinek  <jakub@redhat.com>

PR other/79046
* acx.m4 (GCC_BASE_VER): New m4 function.
(ACX_TOOL_DIRS): Require GCC_BASE_VER, for
--with-gcc-major-version-only use just major number from BASE-VER.

2017-01-06  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

PR go/78978
* hwcaps.m4 (GCC_CHECK_ASSEMBLER_HWCAP): New macro.

6 years agoUpdate the libiberty sources with the latest patches found in the master sources.
Nick Clifton [Wed, 10 Jan 2018 13:57:48 +0000 (13:57 +0000)]
Update the libiberty sources with the latest patches found in the master sources.

2017-01-02  Richard Biener  <rguenther@suse.de>

PR lto/83452
* simple-object-elf.c (simple_object_elf_copy_lto_debug_section):
Do not use UNDEF locals for removed symbols but instead just
define them in the first prevailing section and with no name.
Use the same gnu_lto_v1 name for all removed globals we promote to
WEAK UNDEFs so hpux can use a stub to provide this symbol.  Clear
sh_info and sh_link in removed sections.

2017-10-30  Richard Biener  <rguenther@suse.de>

PR lto/82757
* simple-object-elf.c (simple_object_elf_copy_lto_debug_sections):
Strip two leading _s from the __gnu_lto_* symbols.

2017-10-24  Alan Modra  <amodra@gmail.com>

PR lto/82687
PR lto/82575
* simple-object-elf.c (simple_object_elf_copy_lto_debug_sections):
Only make __gnu_lto symbols hidden.

2017-10-20  Alan Modra  <amodra@gmail.com>

PR lto/82575
* simple-object-elf.c (simple_object_elf_copy_lto_debug_sections):
Make discarded non-local symbols weak and hidden.

2017-10-18  Jakub Jelinek  <jakub@redhat.com>

PR lto/82598
* simple-object.c (handle_lto_debug_sections): Copy over also
.note.GNU-stack section with unchanged name.
* simple-object-elf.c (SHF_EXECINSTR): Define.
(simple_object_elf_copy_lto_debug_section): Drop SHF_EXECINSTR bit
on .note.GNU-stack section.

2017-09-25  Nathan Sidwell  <nathan@acm.org>

PR demangler/82195
* cp-demangle.c (d_encoding): Strip return type when name is a
LOCAL_NAME.
(d_local_name): Strip return type of enclosing TYPED_NAME.
* testsuite/demangle-expected: Add and adjust tests.

2017-09-21  Nathan Sidwell  <nathan@acm.org>

PR demangler/82195
* cp-demangle.c (d_name): Revert addition of 'toplevel' parm.
(has_return_type): Recurse for DEMANGLE_COMPONENT_LOCAL_NAME.
(d_encoding): Revert d_name change.  Use is_fnqual_component_type
to strip modifiers that do not belong.
(d_special_name, d_class_enum_type): Revert d_name call change.
(d_expresion_1): Commonize DEMANGLE_COMPONENT_UNARY building.
(d_local_name): Revert parsing of a function type.
(d_print_comp_inner): An inner LOCAL_NAME might contain a
TEMPLATE.
* testsuite/demangle-expected: Add & adjust tests

6 years agox86: fix Disp8 handling for scalar AVX512_4FMAPS insns
Jan Beulich [Wed, 10 Jan 2018 13:53:43 +0000 (14:53 +0100)]
x86: fix Disp8 handling for scalar AVX512_4FMAPS insns

Just like their packed counterparts the memory operand is always 16
bytes wide, and the Disp8 scaling is the same for all of them. (As a
side note: I'm also surprised by there being AVX512VL variants of
these as well as the AVX512_4VNNIW ones - the SDM doesn't define any
such.)

Adjust the test cases also for the packed forms to actually live up to
their promise of testing correct Disp8 encoding.

6 years agox86: fix Disp8 handling for AVX512VL VPCMP*{B,W} variants
Jan Beulich [Wed, 10 Jan 2018 13:53:05 +0000 (14:53 +0100)]
x86: fix Disp8 handling for AVX512VL VPCMP*{B,W} variants

In commit 2645e1d079 ("x86: add support for AVX-512 VPCMP*{B,W}
pseudo-ops") I screwed up the Disp8MemShift values of the AVX512VL
variants.

6 years agoRISC-V: Disassemble x0 based addresses as 0.
Jim Wilson [Wed, 10 Jan 2018 00:40:06 +0000 (16:40 -0800)]
RISC-V: Disassemble x0 based addresses as 0.

gas/
* testsuite/gas/riscv/auipc-x0.d: New.
* testsuite/gas/riscv/auipc-x0.s: New.

opcodes/
* riscv-dis.c (maybe_print_address): If base_reg is zero,
then the hi_addr value is zero.

6 years agoAutomatic date update in version.in
GDB Administrator [Wed, 10 Jan 2018 00:00:34 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoDocument support for 'info proc' on FreeBSD.
John Baldwin [Tue, 9 Jan 2018 21:35:17 +0000 (13:35 -0800)]
Document support for 'info proc' on FreeBSD.

Since the 'info proc' support on FreeBSD does not use /proc, reword
the documentation for 'info proc' to not assume /proc.  This includes
renaming the node to 'Process Information' and suggesting that
additional process information can be queried via different
OS-specific interfaces.  This is also cleans up the description of
'info proc' support for core files a bit as /proc is not used for core
file support on any current platform.

gdb/ChangeLog:

* NEWS: Document that 'info proc' now works on FreeBSD.

gdb/doc/ChangeLog:

* gdb.texinfo (pwd): Update cross-reference for Process Information
node and remove explicit /proc reference.
(Native): Rename subsection from SVR4 Process Information to
Process Information.
(Process Information): Reword introduction to be less /proc
centric.  Document support for "info proc" on FreeBSD.

6 years agoSupport 'info proc' for native FreeBSD processes.
John Baldwin [Tue, 9 Jan 2018 21:35:17 +0000 (13:35 -0800)]
Support 'info proc' for native FreeBSD processes.

- Command line arguments are fetched via the kern.proc.args.<pid>
  sysctl.
- The 'cwd' and 'exe' values are obtained from the per-process
  file descriptor table returned by kinfo_getfile() from libutil.
- 'mappings' is implemented by walking the array of VM map entries
  returned by kinfo_getvmmap() from libutil.
- 'status' output is generated by outputting fields from the structure
  returned by the kern.proc.pid.<pid> sysctl.
- 'stat' is aliased to 'status'.

gdb/ChangeLog:

* configure.ac: Check for kinfo_getfile in libutil.
* configure: Regenerate.
* config.in: Regenerate.
* fbsd-nat.c: Include "fbsd-tdep.h".
(fbsd_fetch_cmdline): New.
(fbsd_fetch_kinfo_proc): Move earlier and change to return a bool
rather than calling error.
(fbsd_info_proc): New.
(fbsd_thread_name): Report error if fbsd_fetch_kinfo_proc fails.
(fbsd_wait): Report warning if fbsd_fetch_kinfo_proc fails.
(fbsd_nat_add_target): Set "to_info_proc" to "fbsd_info_proc".

6 years agoUse gdb::unique_xmalloc_ptr<> instead of a deleter that invokes free().
John Baldwin [Tue, 9 Jan 2018 21:35:17 +0000 (13:35 -0800)]
Use gdb::unique_xmalloc_ptr<> instead of a deleter that invokes free().

Since xfree() always wraps free(), it is safe to use the xfree deleter
for buffers allocated by library routines such as kinfo_getvmmap() that
must be released via free().

gdb/ChangeLog:

* fbsd-nat.c (struct free_deleter): Remove.
(fbsd_find_memory_regions): Use gdb::unique_xmalloc_ptr<>.

6 years agoDon't return stale data from fbsd_pid_to_exec_file for kernel processes.
John Baldwin [Tue, 9 Jan 2018 21:35:17 +0000 (13:35 -0800)]
Don't return stale data from fbsd_pid_to_exec_file for kernel processes.

For processes without an associated executable (such as kernel processes),
the kern.proc.pathname.<pid> system control node returns a length of zero
without modifying the user's buffer.  Detect this case and return NULL
rather than the previous contents of the static buffer 'buf'.

gdb/ChangeLog:

* fbsd-nat.c (fbsd_pid_to_exec_file) [KERN_PROC_PATHNAME]: Return
NULL for an empty pathname.

6 years agoSupport 'info proc' for FreeBSD process core dumps.
John Baldwin [Tue, 9 Jan 2018 21:35:17 +0000 (13:35 -0800)]
Support 'info proc' for FreeBSD process core dumps.

- Command line arguments are obtained from the pr_psargs[] array
  saved in the NT_PRPSINFO note.
- The 'cwd' and 'exe' values are obtained from the per-process file
  descriptor table stored in the NT_PROCSTAT_FILES core note.
- 'mappings' is implemented by walking the array of VM map entries
  stored in the NT_PROCSTAT_VMMAP core note.
- 'status' output is generated by outputting fields from
  the first structure stored in the NT_PROCSTAT_PROC core note.
- 'stat' is aliased to 'status'.

gdb/ChangeLog:

* fbsd-tdep.c (KVE_STRUCTSIZE, KVE_START, KVE_END, KVE_OFFSET)
(KVE_FLAGS, KVE_PROTECTION, KVE_PATH, KINFO_VME_PROT_READ)
(KINFO_VME_PROT_WRITE, KINFO_VME_PROT_EXEC, KINFO_VME_FLAG_COW)
(KINFO_VME_FLAG_NEEDS_COPY, KINFO_VME_FLAG_NOCOREDUMP)
(KINFO_VME_FLAG_SUPER, KINFO_VME_FLAG_GROWS_UP)
(KINFO_VME_FLAG_GROWS_DOWN, KF_STRUCTSIZE, KF_TYPE, KF_FD)
(KF_PATH, KINFO_FILE_TYPE_VNODE, KINFO_FILE_FD_TYPE_CWD)
(KINFO_FILE_FD_TYPE_TEXT, SIG_WORDS, struct kinfo_proc_layout)
(kinfo_proc_layout_32, kinfo_proc_layout_i386)
(kinfo_proc_layout_64, fbsd_vm_map_entry_flags)
(fbsd_core_info_proc_mappings, fbsd_core_vnode_path)
(fbsd_core_fetch_timeval, fbsd_print_sigset)
(fbsd_core_info_proc_status, fbsd_core_info_proc): New.
(fbsd_init_abi):  Install gdbarch "core_info_proc" method.
* fbsd-tdep.h (fbsd_vm_map_entry_flags): New.

6 years agoAdd explicit shared check to eh-frame-hdr test.
Jim Wilson [Tue, 9 Jan 2018 18:08:47 +0000 (10:08 -0800)]
Add explicit shared check to eh-frame-hdr test.

ld/
* testsuite/ld-elf/eh-frame-hdr.d (#xfail): Delete
(#alltargets): Renamed from #target.  Add shared.
* testsuite/lib/ld-lib.exp (run_dump_test): Document shared target.
Document alltargets option.  Add support for alltargets option.
(istarget): Add support for shared target.

6 years ago[Arm] Add CSDB instruction
James Greenhalgh [Tue, 9 Jan 2018 14:15:00 +0000 (14:15 +0000)]
[Arm] Add CSDB instruction

CSDB is a new instruction which Arm has defined. As it shares the
encoding space with NOP instructions, it is available from Armv3 in
Arm mode, and Armv6T2 in Thumb mode.

OK? If so, please commit on my behalf as I don't have commit rights
over here.

Thanks, James

---
opcodes/

2018-01-09  James Greenhalgh  <james.greenhalgh@arm.com>

* arm-dis.c (arm_opcodes): Add csdb.
(thumb32_opcodes): Add csdb.

gas/

2018-01-09  James Greenhalgh  <james.greenhalgh@arm.com>

* config/tc-arm.c (insns): Add csdb, enable for Armv3 and above
in Arm execution state, and Armv6T2 and above in Thumb execution
state.
* testsuite/gas/arm/csdb.s: New.
* testsuite/gas/arm/csdb.d: New.
* testsuite/gas/arm/thumb2_it_bad.l: Add csdb.
* testsuite/gas/arm/thumb2_it_bad.s: Add csdb.

6 years agoAdd support for the AArch64's CSDB instruction.
James Greenhalgh [Tue, 9 Jan 2018 11:28:04 +0000 (11:28 +0000)]
Add support for the AArch64's CSDB instruction.

CSDB is a new instruction which Arm has defined. It has the same encoding as
HINT #0x14 and is available at all architecture levels.

opcodes * aarch64-tbl.h (aarch64_opcode_table): Add "csdb".
* aarch64-asm-2.c: Regenerate.
* aarch64-dis-2.c: Regenerate.
* aarch64-opc-2.c: Regenerate.

gas * testsuite/gas/aarch64/system.d: Update expected results to expect
CSDB.

6 years agoFix breakpoint add on inlined function using function name.
Xavier Roirand [Mon, 11 Dec 2017 09:03:45 +0000 (10:03 +0100)]
Fix breakpoint add on inlined function using function name.

Using this Ada example:

  package B is
    procedure Read_Small with Inline_Always;
  end B;

  package body B is
    Total : Natural := 0;
    procedure Read_Small is
    begin
      Total := Total + 1;
    end Read_Small;
  end B;

and

  with B;

  procedure M is
  begin
    B.Read_Small;
  end M;

% gnatmake -g -O0 -m m.adb -cargs -gnatn
% gdb m

Inserting a breakpoint on Read_Small inlined function does not work:

(gdb) b read_small
Breakpoint 1 at 0x40250e: file b.adb, line 5.
(gdb) info b
Num     Type           Disp Enb Address            What
1       breakpoint     keep y   0x000000000040250e in b.doit at b.adb:5
(gdb)

In this exemple we should have two breakpoints set, one in package B and
the other one in the inlined instance inside procedure M), like below:

(gdb) b read_small
Breakpoint 1 at 0x40250e: b.adb:5. (2 locations)
(gdb) info b
Num     Type           Disp Enb Address            What
1       breakpoint     keep y   <MULTIPLE>
1.1                         y     0x000000000040250e in b.doit at b.adb:5
1.2                         y     0x0000000000402540 in m at b.adb:5
(gdb)

Looking at the DWARF info for inlined instance of Read_Small:

<1><1526>: Abbrev Number: 2 (DW_TAG_subprogram)
    <1527>   DW_AT_name        : ([...], offset: 0x1e82): b__read_small
    <152b>   DW_AT_decl_file   : 2
    <152c>   DW_AT_decl_line   : 3
    <152d>   DW_AT_inline      : 3      (declared as inline and inlined)
[...]
 <2><1547>: Abbrev Number: 4 (DW_TAG_inlined_subroutine)
    <1548>   DW_AT_abstract_origin: <0x1526>
    <154c>   DW_AT_low_pc      : 0x402552
    <1554>   DW_AT_high_pc     : 0x2b
    <155c>   DW_AT_call_file   : 1
    <155d>   DW_AT_call_line   : 5
 <2><155e>: Abbrev Number: 0

During the parsing of DWARF info in order to produce partial DIE linked
list, the DW_TAG_inlined_subroutine were skipped thus not present in the
final partial dies.
Taking DW_TAG_inlined_subroutine in account during the parsing process
fixes the problem.

gdb/ChangeLog:

        * dwarf2read.c (scan_partial_symbols, add_partial_symbol)
        (add_partial_subprogram, load_partial_dies): Add
        DW_TAG_inlined_subroutine handling.

gdb/testsuite/ChangeLog:

        * gdb.ada/bp_inlined_func: New testcase.

6 years agoPR22662, nds32: Fix a typographical error.
Kuan-Lin Chen [Tue, 9 Jan 2018 08:04:58 +0000 (16:04 +0800)]
PR22662, nds32: Fix a typographical error.

6 years agoRISC-V: Fix accidental embedded -shared regressions.
Jim Wilson [Tue, 9 Jan 2018 01:55:29 +0000 (17:55 -0800)]
RISC-V: Fix accidental embedded -shared regressions.

ld/
* testsuite/ld-riscv-elf/c-lui.d: Don't use -shared.  Check for _start
instead of .text.
* testsuite/ld-riscv-elf/c-lui.s: Add _start label.
* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Before __global_pointer$
tests, add call to check_shared_lib_support.

6 years agoAutomatic date update in version.in
GDB Administrator [Tue, 9 Jan 2018 00:00:33 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agohurd: Add enough auxv support for AT_ENTRY for PIE binaries
Samuel Thibault [Mon, 8 Jan 2018 15:30:16 +0000 (10:30 -0500)]
hurd: Add enough auxv support for AT_ENTRY for PIE binaries

Add PIE support for hurd, by faking an AT_ENTRY auxv entry.  That value
is expected to be read by svr4_exec_displacement, which will propagate
the executable displacement.

gdb/ChangeLog:

* gdb/gnu-nat.c: Include <elf.h> and <link.h>.
(gnu_xfer_auxv): New function.
(gnu_xfer_partial): Call gnu_xfer_auxv when `object' is
TARGET_OBJECT_AUXV.

6 years agox86: Properly encode vmovd with 64-bit memeory
H.J. Lu [Mon, 8 Jan 2018 12:36:59 +0000 (04:36 -0800)]
x86: Properly encode vmovd with 64-bit memeory

For historical reason, we allow movd/vmovd with 64-bit register and
memeory operands.  But for vmovd, we failed to handle 64-bit memeory
operand.  This has been gone unnoticed since AT&T syntax always treats
memory operand as 32-bit memory.  This patch properly encodes vmovd
with 64-bit memeory operands.  It also removes AVX512 vmovd with 64-bit
operands since GCC has

    case TYPE_SSEMOV:
      switch (get_attr_mode (insn))
        {
        case MODE_DI:
          /* Handle broken assemblers that require movd instead of movq.  */
          if (!HAVE_AS_IX86_INTERUNIT_MOVQ
              && (GENERAL_REG_P (operands[0]) || GENERAL_REG_P (operands[1])))
            return "%vmovd\t{%1, %0|%0, %1}";
          return "%vmovq\t{%1, %0|%0, %1}";

and all AVX512 GNU assemblers set HAVE_AS_IX86_INTERUNIT_MOVQ, GCC won't
generate AVX512 vmovd with 64-bit operand.

gas/

PR gas/22681
* testsuite/gas/i386/i386.exp: Run x86-64-movd and
x86-64-movd-intel.
* testsuite/gas/i386/x86-64-movd-intel.d: New file.
* testsuite/gas/i386/x86-64-movd.d: Likewise.
* testsuite/gas/i386/x86-64-movd.s: Likewise.

opcodes/

PR gas/22681
* i386-opc.tbl: Properly encode vmovd with Qword memeory operand.
Remove AVX512 vmovd with 64-bit operands.
* i386-tbl.h: Regenerated.

6 years agoFix GDBserver build failure when $development is false
Yao Qi [Mon, 8 Jan 2018 10:09:33 +0000 (10:09 +0000)]
Fix GDBserver build failure when $development is false

When we set bfd/development.sh:$development to false, GDBserver failed to
build,

selftest.o: In function `selftests::run_tests(char const*)':
binutils-gdb/gdb/gdbserver/../common/selftest.c:97:undefined reference to `selftests::reset()'
collect2: error: ld returned 1 exit status

selftest.o shouldn't be compiled and linked when $development is false.
With this patch, in release mode, GDBserver doesn't nothing with option
--selftest,

$ ./gdbserver --selftest=foo
Selftests are not available in a non-development build.
$ ./gdbserver --selftest
Selftests are not available in a non-development build.

gdb/gdbserver:

2018-01-08  Yao Qi  <yao.qi@linaro.org>
    Simon Marchi  <simon.marchi@ericsson.com>

* Makefile.in (OBS): Remove selftest.o.
* configure.ac: Set srv_selftest_objs if $development is true.
(GDBSERVER_DEPFILES): Append $srv_selftest_objs.
* configure: Re-generated.
* server.c (captured_main): Wrap variable selftest_filter with
GDB_SELF_TEST.

gdb/testsuite:

2018-01-08  Simon Marchi  <simon.marchi@ericsson.com>

* gdb.server/unittest.exp: Match the output in non-development
mode.

6 years agoFix GDB build failure when $development is false
Yao Qi [Mon, 8 Jan 2018 10:09:32 +0000 (10:09 +0000)]
Fix GDB build failure when $development is false

We don't build GDB selftests bits when $development is false.  However, if
we turn bfd/development.sh:$development to false, common/selftest.c is
compiled which is not expected.  It causes the build failure,

selftest.o: In function `selftests::run_tests(char const*)':
binutils-gdb/gdb/common/selftest.c:97: undefined reference to `selftests::reset()'
collect2: error: ld returned 1 exit status

I fix this issue by putting selftest.o selftest-arch.o into CONFIG_OBS
only when $development is true.  After this is fixed, there are other
build failures in maint.c, this patch fixes them as well.

In the release mode, the output of these commands are:

(gdb) maintenance selftest
Selftests are not available in a non-development build.
(gdb) maintenance selftest foo
Selftests are not available in a non-development build.
(gdb) maintenance info selftests
Selftests are not available in a non-development build.

gdb:

2018-01-08  Yao Qi  <yao.qi@linaro.org>
    Simon Marchi  <simon.marchi@ericsson.com>

* Makefile.in (COMMON_SFILES): Remove selftest-arch.c and
common/selftest.c.
(COMMON_OBS): Remove selftest.o.
* configure.ac: Append selftest-arch.c and common/selftest.c to
CONFIG_SRCS.  Append selftest-arch.o and selftest.o to COMMON_OBS.
* configure: Re-generated.
* maint.c (maintenance_selftest): Wrap selftests::run_tests with
GDB_SELF_TEST.
(maintenance_info_selftests): Likewise.

gdb/testsuite:

2018-01-08  Simon Marchi  <simon.marchi@ericsson.com>

* gdb.gdb/unittest.exp: Match output in non-development mode.

6 years agoFix second-to-last gdb/testsuite/ChangeLog entry.
Joel Brobecker [Mon, 8 Jan 2018 09:39:23 +0000 (04:39 -0500)]
Fix second-to-last gdb/testsuite/ChangeLog entry.

6 years agoRelax expected output in gdb.ada/access_tagged_param.exp test
Joel Brobecker [Mon, 8 Jan 2018 09:26:52 +0000 (04:26 -0500)]
Relax expected output in gdb.ada/access_tagged_param.exp test

One of the tests in gdb.ada/access_tagged_param.exp verifies
the value of the parameters being printed by GDB when stopping
at a breakpoint inside procedure Pck.Inspect.

In particular, one of these parameters is actually generated
internally by the compiler, and does only indirectly depend
on the user-level code. A recent change in AdaCore's compiler
caused the code expansion to change a little bit, and as a result,
the value of that parameter has changed from 2 to 3. This can be
evindenced by looking at the code post expansion, using the -gnatDG
command-line switch to generate the .dg files:

    $ gnatmake -g -gnatDG foo.adb
    $ vi foo.adb.dg

We can see that the call to pck.inspect used to be:

    pck__inspect (P8b, objL => 2);

With a recent version of GNAT Pro, it is now:

    pck__inspect (P9b, objL => 3);

This change causes a spurious FAIL when running this testcase.
The objL parameter being, at heart, a simple counter of the nesting
level, this commit relaxes the expected output to accept any single-
digit number. We could accept any decimal, but given the example
program, I dout that number will reach double-digit level. If it
does, we'll double-check that this is normal, and relax the expected
output further.

gdb/testsuite/ChangeLog:

        * gdb.ada/access_tagged_param.exp: Relax expected output
        for value of "ObjL" in "continue" to pck.inspect breakpoint
        test.

Tested on x86_64-linux.

6 years agoAdd a description of the X86_64 assembler's .largcomm pseudo-op.
Nick Clifton [Mon, 8 Jan 2018 09:29:17 +0000 (09:29 +0000)]
Add a description of the X86_64 assembler's .largcomm pseudo-op.

PR 22553
* doc/c-i386.texi (i386-Directives): Document the .largecomm
directive.

6 years ago(Ada) Fix print of array using non-contiguous enumeration indexes
Xavier Roirand [Mon, 8 Jan 2018 04:56:36 +0000 (23:56 -0500)]
(Ada) Fix print of array using non-contiguous enumeration indexes

Consider the following code:

  type Index is (Index1, Index2);
  Size : constant Integer := 10;
  for Index use (Index1 => 1, Index2 => Size);
  type Array_Index_Enum is array (Index) of Integer;
  my_table : Array_Index_Enum :=(others => 42);

When compiling the code above with a compiler where the GNAT encodings
are turned off (which can be temporarily emulated by using the compiler
switch -fgnat-encodings=minimal), printing this table in gdb leads to:

  (gdb) p my_table
  $1 = (42, 42, 4203344, 10, -8320, 32767, 4203465, 0, 0, 0)

The displayed content is wrong since the handling part believes
that the length of the array is max index value (10) minus the
first index value (1) i+ 1 = 10 which is wrong since index are not
contiguous in this case.

The right behavior is to detect that the array is using enumeration
index hence parse the enumeration values in order to get the number
of indexes in this array (2 indexes here).

This patch fixes this issue and changes the output as follow:

  (gdb) p my_table
  $1 = (42, 42)

gdb/ChangeLog:

        * ada-valprint.c (val_print_packed_array_elements): Use
        proper number of elements when printing an array indexed
        by an enumeration type.

gdb/testsuite/ChangeLog (Joel Brobecker  <brobecker@adacore.com>):

        * gdb.ada/arr_enum_idx_w_gap.exp
        * gdb.ada/arr_enum_idx_w_gap/foo_q418_043.adb

Tested on x86_64-linux.

6 years agoAutomatic date update in version.in
GDB Administrator [Mon, 8 Jan 2018 00:00:33 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoRemove dwarf2_cu::dwarf2_per_objfile
Simon Marchi [Sun, 7 Jan 2018 16:22:46 +0000 (11:22 -0500)]
Remove dwarf2_cu::dwarf2_per_objfile

This patch removes the dwarf2_per_objfile field of dwarf2_cu.  It is
redundant, since we can access dwarf2_per_objfile through
dwarf2_per_objfile, which is guaranteed to be set.

gdb/ChangeLog:

* dwarf2read.c (struct dwarf2_cu) <dwarf2_per_objfile>: Remove.
(dw2_get_file_names_reader): Adjust.
(lookup_dwo_signatured_type): Adjust.
(lookup_dwp_signatured_type): Adjust.
(lookup_signatured_type): Adjust.
(create_type_unit_group): Adjust.
(get_type_unit_group): Adjust.
(process_psymtab_comp_unit_reader): Adjust.
(build_type_psymtabs_reader): Adjust.
(scan_partial_symbols): Adjust.
(add_partial_symbol): Adjust.
(add_partial_subprogram): Adjust.
(peek_die_abbrev): Adjust.
(fixup_go_packaging): Adjust.
(process_imported_unit_die): Adjust.
(dwarf2_compute_name): Adjust.
(dwarf2_physname): Adjust.
(read_import_statement): Adjust.
(handle_DW_AT_stmt_list): Adjust.
(read_file_scope): Adjust.
(read_func_scope): Adjust.
(read_lexical_block_scope): Adjust.
(read_call_site_scope): Adjust.
(read_variable): Adjust.
(dwarf2_rnglists_process): Adjust.
(dwarf2_ranges_process): Adjust.
(dwarf2_ranges_read): Adjust.
(dwarf2_get_pc_bounds): Adjust.
(dwarf2_record_block_ranges): Adjust.
(dwarf2_add_field): Adjust.
(dwarf2_add_member_fn): Adjust.
(read_structure_type): Adjust.
(process_structure_scope): Adjust.
(read_enumeration_type): Adjust.
(read_array_type): Adjust.
(mark_common_block_symbol_computed): Adjust.
(read_common_block): Adjust.
(read_namespace_type): Adjust.
(read_namespace): Adjust.
(read_module_type): Adjust.
(read_tag_pointer_type): Adjust.
(read_tag_ptr_to_member_type): Adjust.
(read_tag_string_type): Adjust.
(read_subroutine_type): Adjust.
(read_typedef): Adjust.
(read_base_type): Adjust.
(attr_to_dynamic_prop): Adjust.
(read_subrange_type): Adjust.
(read_unspecified_type): Adjust.
(dwarf2_read_abbrevs): Adjust.
(load_partial_dies): Adjust.
(read_partial_die): Adjust.
(find_partial_die): Adjust.
(guess_partial_die_structure_name): Adjust.
(fixup_partial_die): Adjust.
(read_attribute_value): Adjust.
(read_addr_index): Adjust.
(read_addr_index_from_leb128): Adjust.
(read_str_index): Adjust.
(dwarf2_string_attr): Adjust.
(get_debug_line_section): Adjust.
(dwarf_decode_line_header): Adjust.
(lnp_state_machine::check_line_address): Adjust.
(dwarf_decode_lines_1): Adjust.
(dwarf_decode_lines): Adjust.
(dwarf2_start_symtab): Adjust.
(var_decode_location): Adjust.
(new_symbol_full): Adjust.
(dwarf2_const_value_data): Adjust.
(dwarf2_const_value_attr): Adjust.
(dwarf2_const_value): Adjust.
(die_type): Adjust.
(die_containing_type): Adjust.
(build_error_marker_type): Adjust.
(lookup_die_type): Adjust.
(guess_full_die_structure_name): Adjust.
(anonymous_struct_prefix): Adjust.
(determine_prefix): Adjust.
(dwarf2_name): Adjust.
(follow_die_ref_or_sig): Adjust.
(follow_die_offset): Adjust.
(follow_die_ref): Adjust.
(follow_die_sig_1): Adjust.
(follow_die_sig): Adjust.
(get_signatured_type): Adjust.
(get_DW_AT_signature_type): Adjust.
(decode_locdesc): Adjust.
(dwarf_decode_macros): Adjust.
(cu_debug_loc_section): Adjust.
(fill_in_loclist_baton): Adjust.
(dwarf2_symbol_mark_computed): Adjust.
(init_one_comp_unit): Don't assign
dwarf2_cu::dwarf2_per_objfile.
(set_die_type): Adjust.

6 years agoRemove dwarf2_per_objfile global
Simon Marchi [Sun, 7 Jan 2018 16:22:46 +0000 (11:22 -0500)]
Remove dwarf2_per_objfile global

This patch removes the global variable dwarf2_per_objfile.  This global
variable is set at the various entry points of dwarf2read.c (using
dw2_setup), and is referred to throughout the file.  Instead of passing
data between functions in global variables like this one, it would be
better if the functions that depend on it either received it as argument
or got it from the existing arguments they receive.  For example, a
function receiving a reference to a dwarf2_per_cu_data can access it
from dwarf2_per_cu_data::dwarf2_per_objfile.

This patch has been tested on the buildbot.

gdb/ChangeLog:

* dwarf2read.c (struct mapped_debug_names): Add constructor.
<dwarf2_per_objfile>: New field.
(dwarf2_per_objfile): Remove global.
(get_dwarf2_per_objfile): New function.
(set_dwarf2_per_objfile): New function.
(dwarf2_build_psymtabs_hard): Change objfile parameter to
dwarf2_per_objfile.
(abbrev_table_read_table): Add dwarf2_per_objfile parameter.
(read_abbrev_offset): Likewise.
(read_indirect_string): Likewise.
(read_indirect_line_string): Likewise.
(read_indirect_string_at_offset): Likewise.
(read_indirect_string_from_dwz): Likewise.
(dwarf2_find_containing_comp_unit): Change objfile parameter to
dwarf2_per_objfile.
(age_cached_comp_units): Add dwarf2_per_objfile parameter.
(create_all_comp_units): Change objfile parameter to
dwarf2_per_objfile.
(create_all_type_units): Likewise.
(process_queue): Add dwarf2_per_objfile parameter.
(read_and_check_comp_unit_head): Likewise.
(lookup_dwo_unit_in_dwp): Likewise.
(get_dwp_file): Likewise.
(process_cu_includes): Likewise.
(struct free_dwo_file_cleanup_data): New struct.
(dwarf2_has_info): Use get_dwarf2_per_objfile and
set_dwarf2_per_objfile.
(dwarf2_get_dwz_file): Add dwarf2_per_objfile parameter.
(dw2_do_instantiate_symtab): Get dwarf2_per_objfile from
context, adjust calls.
(dw2_instantiate_symtab): Likewise.
(dw2_get_cutu): Add dwarf2_per_objfile parameter.
(dw2_get_cu): Likewise.
(create_cu_from_index_list): Change objfile parameter to
dwarf2_per_objfile.
(create_cus_from_index_list): Get dwarf2_per_objfile from
context, adjust calls.
(create_cus_from_index): Likewise.
(create_signatured_type_table_from_index): Change objfile
parameter to dwarf2_per_objfile.
(create_signatured_type_table_from_debug_names): Change objfile
parameter to dwarf2_per_objfile.
(create_addrmap_from_index): Likewise.
(create_addrmap_from_aranges): Likewise.
(dwarf2_read_index): Use get_dwarf2_per_objfile, adjust calls.
(dw2_setup): Remove.
(dw2_get_file_names_reader): Get dwarf2_per_objfile from
context.
(dw2_find_last_source_symtab): Get dwarf2_per_objfile using
get_dwarf2_per_objfile.
(dw2_forget_cached_source_info): Likewise.
(dw2_map_symtabs_matching_filename): Likewise.
(struct dw2_symtab_iterator) <index>: Remove.
<dwarf2_per_objfile>: New field.
(dw2_symtab_iter_init): Replace index parameter with
dwarf2_per_objfile.
(dw2_symtab_iter_next): Use dwarf2_per_objfile from iter.
(dw2_lookup_symbol): Use get_dwarf2_per_objfile and adjust.
(dw2_print_stats): Likewise.
(dw2_dump): Likewise.
(dw2_expand_symtabs_for_function): Likewise.
(dw2_expand_all_symtabs): Likewise.
(dw2_expand_symtabs_with_fullname): Likewise.
(dw2_expand_marked_cus): Replace index and objfile parameters
with dwarf2_per_objfile.
(dw_expand_symtabs_matching_file_matcher): Add
dwarf2_per_objfile parameter and adjust calls.
(dw2_expand_symtabs_matching): Use get_dwarf2_per_objfile and
adjust calls.
(dw2_find_pc_sect_compunit_symtab): Don't call dw2_setup.
(dw2_map_symbol_filenames): Use get_dwarf2_per_objfile and
adjust calls.
(create_cus_from_debug_names_list): Replace objfile parameter
with dwarf2_per_objfile and adjust calls.
(create_cus_from_debug_names): Likewise.
(dwarf2_read_debug_names): Likewise.
(mapped_debug_names::namei_to_name): Adjust call.
(dw2_debug_names_iterator::next): Likewise.
(dw2_debug_names_iterator::find_vec_in_debug_names): Likewise.
(dw2_debug_names_lookup_symbol): Use get_dwarf2_per_objfile.
(dw2_debug_names_dump): Likewise.
(dw2_debug_names_expand_symtabs_for_function): Likewise.
(dw2_debug_names_expand_symtabs_matching): Likewise.
(dwarf2_initialize_objfile): Likewise.
(dwarf2_build_psymtabs): Likewise.
(get_abbrev_section_for_cu): Get dwarf2_per_objfile from
this_cu.
(error_check_comp_unit_head): Add dwarf2_per_objfile parameter.
(read_and_check_comp_unit_head): Likewise.
(read_abbrev_offset): Likewise.
(create_debug_type_hash_table): Likewise.
(create_debug_types_hash_table): Likewise.
(create_all_type_units): Replace objfile parameter with
dwarf2_per_objfile.
(add_type_unit): Add dwarf2_per_objfile parameter.
(fill_in_sig_entry_from_dwo_entry): Replace objfile parameter
with dwarf2_per_objfile.
(lookup_dwo_signatured_type): Get dwarf2_per_objfile from cu.
(lookup_dwp_signatured_type): Likewise.
(lookup_signatured_type): Likewise.
(read_cutu_die_from_dwo): Likewise.
(init_tu_and_read_dwo_dies): Likewise.
(init_cutu_and_read_dies): Likewise.
(init_cutu_and_read_dies_no_follow): Likewise.
(allocate_type_unit_groups_table): Add objfile parameter.
(create_type_unit_group): Use dwarf2_per_objfile from cu.
(get_type_unit_group): Likewise.
(process_psymtab_comp_unit): Update call.
(build_type_psymtabs_reader): Use dwarf2_per_objfile from cu.
(build_type_psymtabs_1): Add dwarf2_per_objfile parameter.
(print_tu_stats): Likewise.
(build_type_psymtab_dependencies): Use dwarf2_per_objfile passed
in void* parameter.
(build_type_psymtabs): Change objfile parameter to
dwarf2_per_objfile.
(process_skeletonless_type_unit): Use dwarf2_per_objfile
passed in void* parameter.
(process_skeletonless_type_units): Change objfile parameter to
dwarf2_per_objfile.
(set_partial_user): Likewise.
(dwarf2_build_psymtabs_hard): Likewise.
(read_comp_units_from_section): Likewise.
(create_all_comp_units): Likewise.
(scan_partial_symbols): Update calls.
(add_partial_symbol): Likewise.
(dwarf2_read_symtab): Use get_dwarf2_per_objfile.
(maybe_queue_comp_unit): Use dwarf2_read_symtab from cu.
(process_queue): Add dwarf2_per_objfile parameter.
(get_compunit_symtab): Use dwarf2_per_objfile from cu.
(compute_compunit_symtab_includes): Likewise.
(process_cu_includes): Add dwarf2_per_objfile parameter.
(process_full_comp_unit): Use dwarf2_per_objfile from cu.
(process_full_type_unit): Likewise.
(process_imported_unit_die): Update call.
(handle_DW_AT_stmt_list): Use dwarf2_per_objfile from cu.
(read_file_scope): Likewise.
(allocate_dwo_file_hash_table): Add objfile parameter.
(lookup_dwo_file_slot): Add dwarf2_per_objfile parameter.
(create_cus_hash_table): Likewise.
(create_dwp_hash_table): Likewise.
(create_dwo_unit_in_dwp_v1): Likewise.
(create_dwp_v2_section): Likewise.
(create_dwo_unit_in_dwp_v2): Likewise.
(lookup_dwo_unit_in_dwp): Likewise.
(try_open_dwop_file): Likewise.
(open_dwo_file): Likewise. Use dwarf2_per_objfile from cu.
(open_and_init_dwo_file): Use dwarf2_per_objfile from cu, update
cleanup to include a reference to dwarf2_per_objfile.
(open_dwp_file): Add dwarf2_per_objfile parameter.
(open_and_init_dwp_file): Likewise.
(get_dwp_file): Likewise.
(lookup_dwo_cutu): Use dwarf2_per_objfile from cu.
(queue_and_load_all_dwo_tus): Update call.
(free_dwo_file_cleanup): Use dwarf2_per_objfile from cleanup
data.
(dwarf2_rnglists_process): Use dwarf2_per_objfile from cu.
(dwarf2_ranges_process): Likewise.
(dwarf2_get_pc_bounds): Likewise.
(mark_common_block_symbol_computed): Likewise.
(abbrev_table_read_table): Add dwarf2_per_objfile parameter.
(dwarf2_read_abbrevs): Update call.
(read_partial_die): Use dwarf2_per_objfile from cu.
(find_partial_die): Likewise.
(fixup_partial_die): Likewise.
(read_attribute_value): Likewise.
(read_indirect_string_at_offset_from): Add objfile parameter.
(read_indirect_string_at_offset): Add dwarf2_per_objfile
parameter.
(read_indirect_string_from_dwz): Add objfile parameter.
(read_indirect_string): Add objfile parameter.
(read_addr_index_1): Add dwarf2_per_objfile parameter.
(read_addr_index): Use dwarf2_per_objfile from cu.
(dwarf2_read_addr_index): Use dwarf2_per_objfile from cu, don't
call dw2_setup.
(read_str_index): Use dwarf2_per_objfile from cu.
(get_debug_line_section): Likewise.
(read_formatted_entries): Add dwarf2_per_objfile parameter.
(dwarf_decode_line_header): Use dwarf2_per_objfile from cu.
(new_symbol_full): Use dwarf2_per_objfile from cu.
(build_error_marker_type): Likewise.
(lookup_die_type): Likewise.
(determine_prefix): Likewise.
(follow_die_offset): Likewise.
(dwarf2_fetch_die_loc_sect_off): Use get_dwarf2_per_objfile.
(dwarf2_fetch_constant_bytes): Don't call dw2_setup.
(dwarf2_fetch_die_type_sect_off): Likewise.
(dwarf2_get_die_type): Likewise.
(follow_die_sig_1): Use dwarf2_per_objfile from cu.
(get_signatured_type): Likewise.
(get_DW_AT_signature_type): Likewise.
(dwarf_decode_macro_bytes): Add dwarf2_per_objfile parameter.
(dwarf_decode_macros): Use dwarf2_per_objfile from cu.
(cu_debug_loc_section): Likewise.
(fill_in_loclist_baton): Likewise.
(dwarf2_symbol_mark_computed): Likewise.
(dwarf2_find_containing_comp_unit): Change objfile parameter to
dwarf2_per_objfile.
(free_cached_comp_units): Use dwarf2_per_objfile passed in void*
parameter.
(age_cached_comp_units): Add dwarf2_per_objfile parameter.
(free_one_cached_comp_unit): Use dwarf2_per_objfile from cu.
(dwarf2_free_objfile): Use get_dwarf2_per_objfile.
(set_die_type): Use dwarf2_free_objfile from cu.
(get_die_type_at_offset): Likewise.
(dwarf2_per_objfile_free): Don't assign global variable.
(debug_names) <constructor>: Add dwarf2_per_objfile
parameter, update m_debugstrlookup construction.
(debug_names::debug_str_lookup): Add dwarf2_per_objfile
parameter.
<m_dwarf2_per_objfile>: New field.
<lookup>: Use m_dwarf2_per_objfile.
(check_dwarf64_offsets): Add dwarf2_per_objfile parameter.
(psyms_seen_size): Likewise.
(write_gdbindex): Replace objfile parameter with
dwarf2_per_objfile.
(write_debug_names): Likewise.
(write_psymtabs_to_index): Likewise.
(save_gdb_index_command): Use get_dwarf2_per_objfile, update
calls.

6 years agoReplace objfile field in dwarf2_cu and dwarf2_per_cu_data with dwarf2_per_objfile
Simon Marchi [Sun, 7 Jan 2018 16:22:45 +0000 (11:22 -0500)]
Replace objfile field in dwarf2_cu and dwarf2_per_cu_data with dwarf2_per_objfile

The next patch aims to remove the dwarf2_per_objfile global.  In many
functions, we need to find a way to get a reference to the current
dwarf2_per_objfile through the objects passed in parameters.  Often, we have
access to a dwarf2_cu or a dwarf2_per_cu_data.  These objects have a reference
to the objfile, through which we can get the dwarf2_per_objfile:

  dwarf2_per_objfile = ((struct dwarf2_per_objfile *)
        objfile_data (objfile, dwarf2_objfile_data_key));

However, this is a bit cumbersome to do all over the place.  It would be
more logical if the dwarf2_cu and dwarf2_per_cu_data had a reference to
their dwarf2_per_objfile, which would then have a reference to the
objfile.  It would be more in line with the object hierarchy, where
dwarf2_per_objfile owns the dwarf2_per_cu_data instances.  We could
even remove the reference dwarf2_cu has to dwarf2_per_objfile, since we
can access dwarf2_per_objfile through dwarf2_cu::per_cu.

In a graphical way, references would look like this after the current
patch:

  objfile <--- dwarf2_per_objfile <--- dwarf2_per_cu_data
                                    |      ^
    |      |
                                    `- dwarf2_cu

This patch has been tested on the buildbot.

gdb/ChangeLog:

* dwarf2read.c (struct dwarf2_cu) <objfile>: Remove.
<dwarf2_per_objfile>: New field.
(struct dwarf2_per_cu_data) <objfile>: Remove.
<dwarf2_per_objfile>: New field.
(create_cu_from_index_list): Assign dwarf2_per_objfile instead
of objfile.
(create_signatured_type_table_from_index): Likewise.
(create_debug_type_hash_table): Likewise.
(fill_in_sig_entry_from_dwo_entry): Likewise.
(lookup_dwo_unit): Access objfile through dwarf2_per_objfile.
(create_type_unit_group): Assign dwarf2_per_objfile instead of
objfile.
(create_partial_symtab): Access objfile through
dwarf2_per_objfile.
(process_psymtab_comp_unit_reader): Likewise.
(read_comp_units_from_section): Likewise.
(scan_partial_symbols): Likewise.
(add_partial_symbol): Likewise.
(add_partial_subprogram): Likewise.
(peek_die_abbrev): Likewise.
(fixup_go_packaging): Likewise.
(process_full_comp_unit): Likewise.
(process_full_type_unit): Likewise.
(process_imported_unit_die): Likewise.
(dwarf2_compute_name): Likewise.
(dwarf2_physname): Likewise.
(read_import_statement): Likewise.
(create_cus_hash_table): Assign dwarf2_physname instead of
objfile.
(read_func_scope): Access objfile through dwarf2_per_objfile.
(read_lexical_block_scope): Likewise.
(read_call_site_scope): Likewise.
(read_variable): Likewise.
(dwarf2_rnglists_process): Likewise.
(dwarf2_ranges_process): Likewise.
(dwarf2_ranges_read): Likewise.
(dwarf2_record_block_ranges): Likewise.
(dwarf2_add_field): Likewise.
(dwarf2_add_member_fn): Likewise.
(read_structure_type): Likewise.
(process_structure_scope): Likewise.
(read_enumeration_type): Likewise.
(read_array_type): Likewise.
(read_common_block): Likewise.
(read_namespace_type): Likewise.
(read_namespace): Likewise.
(read_module_type): Likewise.
(read_tag_pointer_type): Likewise.
(read_tag_ptr_to_member_type): Likewise.
(read_tag_string_type): Likewise.
(read_subroutine_type): Likewise.
(read_typedef): Likewise.
(read_base_type): Likewise.
(attr_to_dynamic_prop): Likewise.
(read_subrange_type): Likewise.
(read_unspecified_type): Likewise.
(load_partial_dies): Likewise.
(read_partial_die): Likewise.
(find_partial_die): Likewise.
(guess_partial_die_structure_name): Likewise.
(fixup_partial_die): Likewise.
(read_attribute_value): Likewise.
(read_addr_index_from_leb128): Likewise.
(dwarf2_read_addr_index): Likewise.
(dwarf2_string_attr): Likewise.
(lnp_state_machine::check_line_address): Likewise.
(dwarf_decode_lines_1): Likewise.
(dwarf_decode_lines): Likewise.
(dwarf2_start_symtab): Likewise.
(var_decode_location): Likewise.
(new_symbol_full): Likewise.
(dwarf2_const_value_data): Likewise.
(dwarf2_const_value_attr): Likewise.
(dwarf2_const_value): Likewise.
(die_type): Likewise.
(die_containing_type): Likewise.
(lookup_die_type): Likewise.
(guess_full_die_structure_name): Likewise.
(anonymous_struct_prefix): Likewise.
(dwarf2_name): Likewise.
(follow_die_ref_or_sig): Likewise.
(follow_die_offset): Likewise.
(follow_die_ref): Likewise.
(dwarf2_fetch_die_loc_sect_off): Likewise.
(dwarf2_fetch_constant_bytes): Likewise.
(dwarf2_fetch_die_type_sect_off): Likewise.
(dwarf2_get_die_type): Likewise.
(follow_die_sig): Likewise.
(decode_locdesc): Likewise.
(dwarf2_per_cu_objfile): Likewise.
(dwarf2_per_cu_text_offset): Likewise.
(init_one_comp_unit): Assign dwarf2_per_objfile instead of
objfile.
(set_die_type): Access objfile through
dwarf2_per_objfile.

6 years agoMake parse_debug_format_options return an std::string
Simon Marchi [Sun, 7 Jan 2018 15:50:48 +0000 (10:50 -0500)]
Make parse_debug_format_options return an std::string

This avoid having to manually free the return value.

gdb/gdbserver/ChangeLog:

* server.c (parse_debug_format_options): Return std::string.
(handle_monitor_command, captured_main): Adjust.

6 years agoReplace VEC(converted_character_d) with std::vector
Simon Marchi [Sun, 7 Jan 2018 15:48:21 +0000 (10:48 -0500)]
Replace VEC(converted_character_d) with std::vector

This patch changes the usage of VEC(converted_character_d) to use an
std::vector instead.  This allows getting rid of a cleanup.

gdb/ChangeLog:

* valprint.c (converted_character_d): Remove typedef.
(DEF_VEC_O (converted_character_d)): Remove.
(count_next_character): Use std::vector.
(print_converted_chars_to_obstack): Likewise.
(generic_printstr): Likewise.

6 years agoReplace VEC(gdb_xml_value_s) with std::vector
Simon Marchi [Sun, 7 Jan 2018 14:29:52 +0000 (09:29 -0500)]
Replace VEC(gdb_xml_value_s) with std::vector

This patch replaces VEC(gdb_xml_value_s), which is passed to XML
visitors, with an std::vector.  In order to be able to remove the
cleanup in gdb_xml_parser::start_element, the gdb_xml_parser structure
is made to own the value with a gdb::unique_xmalloc_ptr.

This patch has been tested on the buildbot.

gdb/ChangeLog:

* xml-support.h (struct gdb_xml_value): Add constructor.
<value>: Change type to unique_xmalloc_ptr.
(gdb_xml_value_s): Remove typedef.
(DEF_VEC_O (gdb_xml_value_s)): Remove.
(gdb_xml_element_start_handler): Change parameter type to
std::vector.
(xml_find_attribute): Likewise.
* xml-support.c (xml_find_attribute): Change parameter type to
std::vector and adjust.
(gdb_xml_values_cleanup): Remove.
(gdb_xml_parser::start_element): Adjust to std::vector.
(xinclude_start_include): Change paraeter type to std::vector
and adjust.
* btrace.c (check_xml_btrace_version): Likewise.
(parse_xml_btrace_block): Likewise.
(parse_xml_btrace_pt_config_cpu): Likewise.
(parse_xml_btrace_pt): Likewise.
(parse_xml_btrace_conf_bts): Likewise.
(parse_xml_btrace_conf_pt): Likewise.
* memory-map.c (memory_map_start_memory): Likewise.
(memory_map_start_property): Likewise.
* osdata.c (osdata_start_osdata): Likewise.
(osdata_start_item): Likewise.
(osdata_start_column): Likewise.
* remote.c (start_thread): Likewise.
* solib-aix.c (library_list_start_library): Likewise.
(library_list_start_list): Likewise.
* solib-svr4.c (library_list_start_library): Likewise.
(svr4_library_list_start_list): Likewise.
* solib-target.c (library_list_start_segment): Likewise.
(library_list_start_section): Likewise.
(library_list_start_library): Likewise.
(library_list_start_list): Likewise.
* tracepoint.c (traceframe_info_start_memory): Likewise.
(traceframe_info_start_tvar): Likewise.
* xml-syscall.c (syscall_start_syscall): Likewise.
* xml-tdesc.c (tdesc_start_target): Likewise.
(tdesc_start_feature): Likewise.
(tdesc_start_reg): Likewise.
(tdesc_start_union): Likewise.
(tdesc_start_struct): Likewise.
(tdesc_start_flags): Likewise.
(tdesc_start_enum): Likewise.
(tdesc_start_field): Likewise.
(tdesc_start_enum_value): Likewise.
(tdesc_start_vector): Likewise.

6 years agoRemove xmethod_worker::clone
Simon Marchi [Sun, 7 Jan 2018 14:25:33 +0000 (09:25 -0500)]
Remove xmethod_worker::clone

I think that the clone method of xmethod_worker can be removed.  It is
only used in find_overload_match, to clone an xmethod we want to
keep.  Instead, we can just std::move it out of the vector and into
value_from_xmethod.  value_from_xmethod creates a value that will own
the xmethod_worker from that point.  Other xmethod_workers left in the
vector will get destroyed when the vector gets destroyed, but the chosen
one will keep living inside the value struct.

gdb/ChangeLog:

* extension.h (struct xmethod_worker) <clone>: Remove.
* python/py-xmethods.c (struct python_xmethod_worker) <clone>:
Remove.
(python_xmethod_worker::clone): Remove.
* valops.c (find_overload_match): Use std::move instead of
clone.

6 years agoC++ify xmethod_worker, get rid of VEC(xmethod_worker_ptr)
Simon Marchi [Sun, 7 Jan 2018 14:25:32 +0000 (09:25 -0500)]
C++ify xmethod_worker, get rid of VEC(xmethod_worker_ptr)

The initial goal of this patch was to remove the usage of
VEC(xmethod_worker_ptr) and corresponding cleanups.  I ended up having
to  C++ify the xmethod_worker code, to be able to have xmethod_workers
free their data in destructors, and therefore be able to use vectors of
xmethod_worker unique_ptr.

The operations in extension_language_ops that act on one instance of
xmethod_worker (get result type, get args type, invoke) are transformed
to methods of xmethod_worker.  xmethod_worker becomes an abstract base
class with virtual pure methods which python_xmethod_worker implements.
The only xmethod-related operation left in extension_language_ops is
get_matching_xmethod_workers, which returns a list of xmethod_workers.

The changes are relatively straightforward, but here are some notes on
things that may raise eyebrows:

  - I was not really comfortable with the value_of_xmethod function.  At
  first it looks like a simple getter, so I considered making it a
  method of xmethod_worker.  But actually it creates a value and
  transfers the ownership of the xmethod_worker to it.  It would be a
  bit weird and error-prone if calling a method on an object silently
  removed the ownership of the object from the caller.  To reflect the
  behavior more accurately, I renamed it to value_from_xmethod and made
  it accept an rvalue-reference (so the caller knows it gives away the
  ownership).  I noticed the backlink from xmethod_worker to its owning
  value was not used, so I removed it.

  - Some code, like get_matching_xmethod_workers, made each callee fill
  a new vector, which was then merged in the result vector.  I think
  it's safe if we always pass the same vector around, and each
  implementation just appends to it.

  - The clone operation does not seem particularly useful, it is removed
  in the following patch.

gdb/ChangeLog:

* extension-priv.h (enum ext_lang_rc): Remove, move to extension.h.
(struct extension_language_ops) <clone_xmethod_worker_data>: Remove.
<free_xmethod_worker_data>: Remove.
<get_matching_xmethod_workers>: Chance VEC to std::vector.
<get_xmethod_arg_types>: Remove.
<get_xmethod_result_type>: Remove.
<invoke_xmethod>: Remove.
* extension.c (new_xmethod_worker): Remove.
(clone_xmethod_worker): Remove.
(get_matching_xmethod_workers): Return void, pass std::vector by
pointer.
(get_xmethod_arg_types): Rename to...
(xmethod_worker::get_arg_types): ... this, and adjust.
(get_xmethod_result_type): Rename to...
(xmethod_worker::get_result_type): ... this, and adjust.
(invoke_xmethod): Remove.
(free_xmethod_worker): Remove.
(free_xmethod_worker_vec): Remove.
* extension.h (enum ext_lang_rc): Move here from
extension-priv.h.
(struct xmethod_worker): Add constructor and destructor.
<data>: Remove.
<value>: Remove.
<invoke, clone, do_get_result_type, do_get_arg_types>: New
virtual pure methods.
<get_arg_types, get_result_type>: New methods.
(xmethod_worker_ptr): Remove typedef.
(DEF_VEC_P (xmethod_worker_ptr)): Remove.
(xmethod_worker_vec): Remove typedef.
(xmethod_worker_up): New typedef.
(invoke_xmethod): Remove.
(clone_xmethod_worker): Remove.
(free_xmethod_worker): Remove.
(free_xmethod_worker_vec): Remove.
(get_xmethod_arg_types): Remove.
(get_xmethod_result_type): Remove.
* valops.c (find_method_list): Use std::vector, don't use
intermediate vector.
(value_find_oload_method_list): Use std::vector.
(find_overload_match): Use std::vector.
(find_oload_champ): Use std::vector.
* value.c (value_free): Use operator delete.
(value_of_xmethod): Rename to...
(value_from_xmethod): ... this.  Don't assign
xmethod_worker::value, take rvalue-reference.
(result_type_of_xmethod): Adjust.
(call_xmethod): Adjust.
* value.h: Include extension.h.
(struct xmethod_worker): Don't forward-declare.
(value_of_xmethod): Rename to...
(value_from_xmethod): ... this, take rvalue-reference.
* python/py-xmethods.c (struct gdbpy_worker_data): Rename to...
(struct python_xmethod_worker): ... this, add constructor and
destructor.
<invoke, clone, do_get_arg_types, do_get_result_type>: Implement.
(gdbpy_free_xmethod_worker_data): Rename to...
(python_xmethod_worker::~python_xmethod_worker): ... this and
adjust.
(gdbpy_clone_xmethod_worker_data): Rename to...
(python_xmethod_worker::clone): ... this and adjust.
(gdbpy_get_matching_xmethod_workers): Use std::vector, don't use
temporary vector.
(gdbpy_get_xmethod_arg_types): Rename to...
(python_xmethod_worker::do_get_arg_types): ... this and adjust.
(gdbpy_get_xmethod_result_type): Rename to...
(python_xmethod_worker::do_get_result_type): ... this and
adjust.
(gdbpy_invoke_xmethod): Rename to...
(python_xmethod_worker::invoke): ... this and adjust.
(new_python_xmethod_worker): Rename to...
(python_xmethod_worker::python_xmethod_worker): ... this and
adjust.
* python/python-internal.h (gdbpy_clone_xmethod_worker_data):
Remove.
(gdbpy_free_xmethod_worker_data): Remove.
(gdbpy_get_matching_xmethod_workers): Use std::vector.
(gdbpy_get_xmethod_arg_types): Remove.
(gdbpy_get_xmethod_result_type): Remove.
(gdbpy_invoke_xmethod): Remove.
* python/python.c (python_extension_ops): Remove obsolete
callbacks.

6 years agoAutomatic date update in version.in
GDB Administrator [Sun, 7 Jan 2018 00:00:33 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoRISC-V: Print symbol address for jalr w/ zero offset.
Jim Wilson [Sat, 6 Jan 2018 01:51:23 +0000 (17:51 -0800)]
RISC-V: Print symbol address for jalr w/ zero offset.

ld/
* testsuite/ld-riscv-elf/disas-jalr.d: New.
* testsuite/ld-riscv-elf/disas-jalr.s: New.
* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Run new testcase.

opcodes/
* riscv-dis.c (print_insn_args) <'s'>: Call maybe_print_address for a
jalr.

6 years agoAutomatic date update in version.in
GDB Administrator [Sat, 6 Jan 2018 00:00:28 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoRISC-V: Disable shared library support for embedded elf.
Jim Wilson [Fri, 5 Jan 2018 22:29:49 +0000 (14:29 -0800)]
RISC-V: Disable shared library support for embedded elf.

ld/
* emulparams/elf32lriscv-defs.sh (GENERATE_SHLIB_SCRIPT): Move inside
case on $target, and don't set for riscv*-elf targets.
(GENERATE_PIE_SCRIPT): Likewise.

6 years agoFix regression: cannot start with LD_PRELOAD=libSegFault.so (PR gdb/18653#c7)
Pedro Alves [Fri, 5 Jan 2018 18:26:18 +0000 (18:26 +0000)]
Fix regression: cannot start with LD_PRELOAD=libSegFault.so (PR gdb/18653#c7)

At https://sourceware.org/bugzilla/show_bug.cgi?id=18653#c7, Andrew
reports that the fix for PR gdb/18653 made GDB useless if you preload
libSegFault.so, because GDB internal-errors on startup:

 $ LD_PRELOAD=libSegFault.so gdb
 src/gdb/common/signals-state-save-restore.c:64: internal-error: unexpected signal handler
 A problem internal to GDB has been detected,
 further debugging may prove unreliable.
 Aborted (core dumped)
 $

The internal error comes from the code saving the signal dispositions
inherited from gdb's parent:

 (top-gdb) bt
 #0  0x000000000056b001 in internal_error(char const*, int, char const*, ...) (file=0xaf5f38 "src/gdb/common/signals-state-save-restore.c", line=64, fmt=0xaf5f18 "unexpected signal handler") at src/gdb/common/errors.c:54
 #1  0x00000000005752c9 in save_original_signals_state() () at src/gdb/common/signals-state-save-restore.c:64
 #2  0x00000000007425de in captured_main_1(captured_main_args*) (context=0x7fffffffd860)
     at src/gdb/main.c:509
 #3  0x0000000000743622 in captured_main(void*) (data=0x7fffffffd860) at src/gdb/main.c:1145
 During symbol reading, cannot get low and high bounds for subprogram DIE at 24065.
 #4  0x00000000007436f9 in gdb_main(captured_main_args*) (args=0x7fffffffd860) at src/gdb/main.c:1171
 #5  0x0000000000413acd in main(int, char**) (argc=1, argv=0x7fffffffd968) at src/gdb/gdb.c:32

This commit downgrades the internal error to a warning.  You'll get
instead:

~~~
 $ LD_PRELOAD=libSegFault.so gdb
 warning: Found custom handler for signal 11 (Segmentation fault) preinstalled.
 Some signal dispositions inherited from the environment (SIG_DFL/SIG_IGN)
 won't be propagated to spawned programs.
 GNU gdb (GDB) 8.0.50.20171213-git
 Copyright (C) 2017 Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
 and "show warranty" for details.
 This GDB was configured as "x86_64-pc-linux-gnu".
 Type "show configuration" for configuration details.
 For bug reporting instructions, please see:
 <http://www.gnu.org/software/gdb/bugs/>.
 Find the GDB manual and other documentation resources online at:
 <http://www.gnu.org/software/gdb/documentation/>.
 For help, type "help".
 Type "apropos word" to search for commands related to "word"...
 (gdb)
~~~

This also moves the location where save_original_signals_state is
called a bit further below (to after option processing), so that "-q"
disables the warning:

~~~
 $ LD_PRELOAD=libSegFault.so gdb -q
 (gdb)
~~~

New testcase included.

gdb/ChangeLog:
2018-01-05  Pedro Alves  <palves@redhat.com>

PR gdb/18653
* common/signals-state-save-restore.c
(save_original_signals_state): New parameter 'quiet'.  Warn if we
find a custom handler preinstalled, instead of internal erroring.
But only warn if !quiet.
* common/signals-state-save-restore.h
(save_original_signals_state): New parameter 'quiet'.
* main.c (captured_main_1): Move save_original_signals_state call
after option handling, and pass QUIET.

gdb/gdbserver/ChangeLog:
2018-01-05  Pedro Alves  <palves@redhat.com>

PR gdb/18653
* server.c (captured_main): Pass quiet=false to
save_original_signals_state.

gdb/testsuite/ChangeLog:
2018-01-05  Pedro Alves  <palves@redhat.com>

PR gdb/18653
* gdb.base/libsegfault.exp: New.

6 years agoFix gdb/spu-tdep.c build breakage
Pedro Alves [Fri, 5 Jan 2018 17:56:33 +0000 (17:56 +0000)]
Fix gdb/spu-tdep.c build breakage

Commit de63c46b549d ("Fix regresssion(internal-error) printing
subprogram argument (PR gdb/22670)") missed updating spu-tdep.c for
the block_lookup_symbol interface change, resulting in:

  ../../binutils-gdb/gdb/spu-tdep.c: In function void spu_catch_start(objfile*):
  ../../binutils-gdb/gdb/spu-tdep.c:1969:59: error: cannot convert domain_enum_tag to symbol_name_match_type for argument 3 to symbol* block_lookup_symbol(const block*, const char*, symbol_name_match_type, domain_enum)
 sym = block_lookup_symbol (block, "main", VAR_DOMAIN);
     ^

gdb/ChangeLog:
2018-01-05  Pedro Alves  <palves@redhat.com>

* spu-tdep.c (spu_catch_start): Pass
symbol_name_match_type::SEARCH_NAME to block_lookup_symbol.

6 years agoFix regresssion(internal-error) printing subprogram argument (PR gdb/22670)
Pedro Alves [Fri, 5 Jan 2018 14:04:09 +0000 (14:04 +0000)]
Fix regresssion(internal-error) printing subprogram argument (PR gdb/22670)

At <https://sourceware.org/ml/gdb-patches/2017-12/msg00298.html>, Joel
wrote:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Consider the following code which first declares a tagged type (the
equivalent of a class in Ada), and then a procedure which takes a
pointer (access) to this type's 'Class.

    package Pck is
       type Top_T is tagged record
          N : Integer := 1;
       end record;
       procedure Inspect (Obj: access Top_T'Class);
    end Pck;

Putting a breakpoint in that procedure and then running to it triggers
an internal error:

    (gdb) break inspect
    (gdb) continue
    Breakpoint 1, pck.inspect (obj=0x63e010
    /[...]/gdb/stack.c:621: internal-error: void print_frame_args(symbol*, frame_info*, int, ui_file*): Assertion `nsym != NULL' failed.

What's special about this subprogram is that it takes an access to
what we call a 'Class type, and for implementation reasons, the
compiler adds an extra argument named "objL". If you are curious why,
it allows the compiler for perform dynamic accessibility checks that
are mandated by the language.

If we look at the location where we get the internal error (in
stack.c), we find that we are looping over the symbol of each
parameter, and for each parameter, we do:

    /* We have to look up the symbol because arguments can have
       two entries (one a parameter, one a local) and the one we
       want is the local, which lookup_symbol will find for us.
    [...]
        nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
                              b, VAR_DOMAIN, NULL).symbol;
        gdb_assert (nsym != NULL);

The lookup_symbol goes through the lookup structure, which means the
symbol's linkage name ("objL") gets transformed into a
lookup_name_info object (in block_lookup_symbol), before it gets fed
to the block symbol dictionary iterators.  This, in turn, triggers the
symbol matching by comparing the "lookup" name which, for Ada, means
among other things, lowercasing the given name to "objl".  It is this
transformation that causes the lookup find no matches, and therefore
trip this assertion.

Going back to the "offending" call to lookup_symbol in stack.c, what
we are trying to do, here, is do a lookup by linkage name.  So, I
think what we mean to be doing is a completely literal symbol lookup,
so maybe not even strcmp_iw, but actually just plain strcmp???

In the past, in practice, you could get that effect by doing a lookup
using the C language. But that doesn't work, because we still end up
somehow using Ada's lookup_name routine which transforms "objL".

So, ideally, as I hinted before, I think what we need is a way to
perform a literal lookup so that searches by linkage names like the
above can be performed.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This commit fixes the problem by implementing something similar to
Joel's literal idea, but with some important differences.

I considered adding a symbol_name_match_type::LINKAGE and supporting
searching by linkage name for any language, but the problem with that
is that the dictionaries only work with SYMBOL_SEARCH_NAME, because
that's what is used for hashing.  We'd need separate dictionaries for
hashed linkage names.

So with the current symbol tables infrastructure, it's not literal
linkage names that we want to pass down, but instead literal _search_
names (SYMBOL_SEARCH_NAME, etc.).

However, psymbols have no overload/function parameter info in C++, so
a straight strcmp doesn't work properly for C++ name matching.

So what we do is be a little less aggressive then and add a new
symbol_name_match_type::SEARCH_SYMBOL instead that takes as input a
non-user-input search symbol, and then we skip any decoding/demangling
steps and make:

 - Ada treat that as a verbatim match,
 - other languages treat it as symbol_name_match_type::FULL.

This also fixes the new '"maint check-psymtabs" for Ada' testcase for
me (gdb.ada/maint_with_ada.exp).  I've not removed the kfail yet
because Joel still sees that testcase failing with this patch.
That'll be fixed in follow up patches.

gdb/ChangeLog:
2018-01-05  Pedro Alves  <palves@redhat.com>

PR gdb/22670
* ada-lang.c (literal_symbol_name_matcher): New function.
(ada_get_symbol_name_matcher): Use it for
symbol_name_match_type::SEARCH_NAME.
* block.c (block_lookup_symbol): New parameter 'match_type'.  Pass
it down instead of assuming symbol_name_match_type::FULL.
* block.h (block_lookup_symbol): New parameter 'match_type'.
* c-valprint.c (print_unpacked_pointer): Use
lookup_symbol_search_name instead of lookup_symbol.
* compile/compile-object-load.c (get_out_value_type): Pass down
symbol_name_match_type::SEARCH_NAME.
* cp-namespace.c (cp_basic_lookup_symbol): Pass down
symbol_name_match_type::FULL.
* cp-support.c (cp_get_symbol_name_matcher): Handle
symbol_name_match_type::SEARCH_NAME.
* infrun.c (insert_exception_resume_breakpoint): Use
lookup_symbol_search_name.
* p-valprint.c (pascal_val_print): Use lookup_symbol_search_name.
* psymtab.c (maintenance_check_psymtabs): Use
symbol_name_match_type::SEARCH_NAME and SYMBOL_SEARCH_NAME.
* stack.c (print_frame_args): Use lookup_symbol_search_name and
SYMBOL_SEARCH_NAME.
* symtab.c (lookup_local_symbol): Don't demangle the lookup name
if symbol_name_match_type::SEARCH_NAME.
(lookup_symbol_in_language): Pass down
symbol_name_match_type::FULL.
(lookup_symbol_search_name): New.
(lookup_language_this): Pass down
symbol_name_match_type::SEARCH_NAME.
(lookup_symbol_aux, lookup_local_symbol): New parameter
'match_type'.  Pass it down.
* symtab.h (symbol_name_match_type::SEARCH_NAME): New enumerator.
(lookup_symbol_search_name): New declaration.
(lookup_symbol_in_block): New 'match_type' parameter.

gdb/testsuite/ChangeLog:
2018-01-05  Joel Brobecker  <brobecker@adacore.com>

PR gdb/22670
* gdb.ada/access_tagged_param.exp: New file.
* gdb.ada/access_tagged_param/foo.adb: New file.

6 years agoFix gdb.ada/info_addr_mixed_case.exp (PR gdb/22670)
Pedro Alves [Fri, 5 Jan 2018 16:01:57 +0000 (16:01 +0000)]
Fix gdb.ada/info_addr_mixed_case.exp (PR gdb/22670)

The comments about mixed case in the testcase are actually a red
herring.  The problem here is that we'd get to
ada_lookup_encoded_symbol with "my_table", which wraps the looked up
name in "<>"s to force a verbatim match, and that in turn disables
wild matching.

Fix this by swapping around the internals of ada_lookup_encoded_symbol
and ada_lookup_symbol, thus avoiding the encoding and
verbatim-wrapping in the ada_lookup_symbol case, the case that starts
with a user-provided lookup name.

Ada encoding is still done of course, in the ada_lookup_name_info
ctor.  This could be also seen as avoiding the double-encoding problem
in a different way.

gdb/ChangeLog:
2018-01-05  Pedro Alves  <palves@redhat.com>

PR gdb/22670
* ada-lang.c (ada_lookup_encoded_symbol): Reimplement in terms of
ada_lookup_symbol.
(ada_lookup_symbol): Reimplement in terms of
ada_lookup_symbol_list, bits factored out from
ada_lookup_encoded_symbol.

gdb/testsuite/ChangeLog:
2018-01-05  Pedro Alves  <palves@redhat.com>

PR gdb/22670
* gdb.ada/info_addr_mixed_case.exp: Remove kfail.  Extend test to
exercise lower case too, and to exercise both full matching and
wild matching.

6 years ago(Ada) problem printing renaming which references a subprogram parameter
Joel Brobecker [Fri, 5 Jan 2018 09:29:54 +0000 (04:29 -0500)]
(Ada) problem printing renaming which references a subprogram parameter

Consider the following code, which creates a local variable B
which is a renaming whose expression references a subprogram
parameter:

   procedure Flip (Bits : in out Bits_Type; I : Natural) is
   begin
      declare
         B : Boolean renames Bits (I);
      begin
         B := not B; -- BREAK
      end;
   end Flip;

Trying to print the value of B when at the "BREAK" line currently
does not work:

    (gdb) p b
    Could not find i

What happens is the following: For the renaming, GNAT generates
a variable whose name is encoded as follow:

    b___XR_bits___XEXSi

GDB properly detects that variable, determines that, to compute
the variable's value, we start from the symbol "Bits", which
we then have to subscript (XS) using 'i' as the index. The error
occurs while trying to find 'i'.

This is because we forgot to pass the block in the call to
ada_lookup_encoded_symbol, which this patch fixes.

gdb/ChangeLog:

        * ada-exp.y (write_object_renaming): When subscripting an array
        using a symbol as the index, pass the block in call to
        ada_lookup_encoded_symbol when looking that symbol up.

gdb/testsuite/ChangeLog:

        * gdb.ada/rename_subscript_param: New testcase.

Tested on x86_64-linux.

Note: This requires the following GCC patch:

  | 2017-04-25  Pierre-Marie de Rodat  <derodat@adacore.com>
  |
  | * exp_dbug.adb: In Debug_Renaming_Declaration,
  | when dealing with indexed component, accept to produce a renaming
  | symbol when the index is an IN parameter or when it is a name
  | defined in an outer scope.

6 years ago(Ada) Fix Length attribute on array access
Jerome Guitton [Fri, 5 Jan 2018 08:03:59 +0000 (03:03 -0500)]
(Ada) Fix Length attribute on array access

Consider the following variable "Indexed_By_Enum", declared as
an access to an array whose index type is an enumerated type
whose underlying values have "gaps":

   type Enum_With_Gaps is (LIT0, LIT1, LIT2, LIT3, LIT4);
   for Enum_With_Gaps use (LIT0 => 3,
                           LIT1 => 5,
                           LIT2 => 8,
                           LIT3 => 13,
                           LIT4 => 21);
   for Enum_With_Gaps'size use 16;

   type MyWord is range 0 .. 16#FFFF# ;
   for MyWord'Size use 16;

   type AR is array (Enum_With_Gaps range <>) of MyWord;
   type AR_Access is access AR;

   Indexed_By_Enum : AR_Access :=
     new AR'(LIT1 => 1,  LIT2 => 43, LIT3 => 42, LIT4 => 41);

Trying to print the length (number of elements) of this array using
the 'Length attribute does not work:

    (gdb) print indexed_by_enum'length
    'POS only defined on discrete types

The problem occurs while trying to get the array's index type.
It was using TYPE_INDEX_TYPE for that. It does not work for Ada arrays
in general; use ada_index_type instead.

gdb/ChangeLog:

* ada-lang.c (ada_array_length): Use ada_index_type instead of
TYPE_INDEX_TYPE.

gdb/testsuite/ChangeLog:

        * gdb.ada/arr_acc_idx_w_gap: New testcase.

Tested on x86_64-linux.

6 years agomemory error printing component of record from convenience variable
Joel Brobecker [Fri, 5 Jan 2018 07:37:38 +0000 (02:37 -0500)]
memory error printing component of record from convenience variable

Consider the following situation Ada code:

   type Kind_T is (One, Two, Three);
   type Time_Set_T is array (Kind_T) of Integer;

   type T  is record
      Started    : Time_Set_T;
   end record;

   Null_T : constant T := (Started => (others => 0));

   My_Item : Pck.T := Pck.Null_T;

Trying to print the value of My_Item.Started is no problem:

    (gdb) p item.started
    $1 = (0, 0, 0)

However, if you save My_Item into a convenience variable first,
and then try to print a component of that record, you get
an unexpected memory error, instead of getting the same result.
For instance:

    (gdb) set variable $item := item
    (gdb) p $item.started
    Cannot access memory at address 0x0

The issue occurs when, after we extracted the component from
the convenience variable, we next try to "fix" it (which is
ada-lang speak for resolving the type into a static type).
This is done in ada_to_fixed_value, which delegates to
ada_to_fixed_value_create via:

    val = ada_to_fixed_value_create (value_type (val),
                                     value_address (val), val);

And looking at ada_to_fixed_value_create, we see that:

  struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1);

  if (type == type0 && val0 != NULL)
    return val0;
  else
    return value_from_contents_and_address (type, 0, address);

The part that interests us, in this case, is the "else" branch,
where we obviously make the implicit assumption that our object
has an address, which is not true, in this case, because we are
actually dealing with a convenience variable.

This patch plugs that hole by adding special handing for situations
where val does not live in memory. In that case, we just create
a not_lval value using val's contents.

gdb/ChangeLog:

        * ada-lang.c (ada_to_fixed_value_create): Add handling of
        the case where VALUE_LVAL (val0) is not lval_memory.

gdb/testsuite/ChangeLog:

        * gdb.ada/convvar_comp: New testcase.

Tested on x86_64-linux.

6 years agofix date of latest gdb/ChangeLog entry
Joel Brobecker [Fri, 5 Jan 2018 07:39:10 +0000 (02:39 -0500)]
fix date of latest gdb/ChangeLog entry

6 years agoFix email address in latest gdb/testsuite/ChangeLog entry
Joel Brobecker [Fri, 5 Jan 2018 04:51:55 +0000 (23:51 -0500)]
Fix email address in latest gdb/testsuite/ChangeLog entry

6 years ago(Ada) Remove printing of array's first index when unneeded
Xavier Roirand [Fri, 5 Jan 2018 04:47:05 +0000 (23:47 -0500)]
(Ada) Remove printing of array's first index when unneeded

Consider the following code:

  type Table is array (Character) of Natural;
  My_Table : Table := (others => 4874);

Printing this table in gdb leads to:

  (gdb) p my_table
  $1 = ('["00"]' => 4874 <repeats 256 times>)

In this case, the index of the first element in this array is also
the first element of the index type (character type). Similar to what
we do we enumeration types, we do not need to print the index of the
first element when printing the array.

This patch fixes this issue and changes the output as follow:

  (gdb) p my_table
  $1 = (4874 <repeats 256 times>)

gdb/ChangeLog:

        * ada-valprint.c (print_optional_low_bound): Handle
        character-indexed array printing like boolean-indexed array
        printing.

gdb/testuite/ChangeLog:

        * testsuite/gdb.ada/array_char_idx/pck.ads (Table): New type.
        (My_Table): New global variable.
        * testsuite/gdb.ada/array_char_idx.exp: Add test.

Tested on x86_64-linux.

6 years agoUpdate NEWS post GDB 8.1 branch creation.
Joel Brobecker [Fri, 5 Jan 2018 04:18:05 +0000 (08:18 +0400)]
Update NEWS post GDB 8.1 branch creation.

gdb/ChangeLog:

* NEWS: Create a new section for the next release branch.
Rename the section of the current branch, now that it has
been cut.

6 years agoBump version to 8.1.50.DATE-git.
Joel Brobecker [Fri, 5 Jan 2018 04:08:09 +0000 (08:08 +0400)]
Bump version to 8.1.50.DATE-git.

Now that the GDB 8.1 branch has been created, we can
bump the version number.

gdb/ChangeLog:

GDB 8.1 branch created (5219ac6237c272b938c28517bf371429260c71e7):
* version.in: Bump version to 8.1.50.DATE-git.

6 years agoAutomatic date update in version.in
GDB Administrator [Fri, 5 Jan 2018 00:00:35 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoRISC-V: Add 2 missing privileged registers.
Jim Wilson [Thu, 4 Jan 2018 22:17:53 +0000 (14:17 -0800)]
RISC-V: Add 2 missing privileged registers.

gas/
* testsuite/gas/riscv/priv-reg.s: Add missing stval and mtval.
* testsuite/gas/riscv/priv-reg.d: Likewise.

include/
* opcode/riscv-opc.h (CSR_SBADADDR): Rename to CSR_STVAL.  Rename
DECLARE_CSR entry.  Add alias to map sbadaddr to CSR_STVAL.
(CSR_MBADADDR): Rename to CSR_MTVAL.  Rename DECLARE_CSR entry.
Add alias to map mbadaddr to CSR_MTVAL.

6 years agogdb.ada/maint_with_ada.exp: New testcase
Joel Brobecker [Thu, 4 Jan 2018 09:40:17 +0000 (04:40 -0500)]
gdb.ada/maint_with_ada.exp: New testcase

This commit adds a new testcase testing the "check-psymtabs" and
"check-symtabs" maintenance commands.

The "maintenance check-psymtabs" commands is currently known to
produce some errors. While the situation was admetedly made worse
by the following patch...

    commit b5ec771e60c1a0863e51eb491c85c674097e9e13
    Date:   Wed Nov 8 14:22:32 2017 +0000
    Subject: Introduce lookup_name_info and generalize Ada's FULL/WILD name matching

... hence the reference to PR gdb/22670, the command was already
spotting one inconsistency prior to it:

    (gdb) maintenance check-psymtabs
    Global symbol `interfaces__cS' only found in /[...]/b~var_arr_typedef.adb psymtab

For now, the "check-psymtab" test is KFAIL-ed.

gdb/testsuite/ChangeLog:

        PR gdb/22670
        * gdb.ada/maint_with_ada: New testcase.

Tested on x86_64-linux.

6 years agoAdd new gdb.ada/bp_c_mixed_case testcase for PR gdb/22670
Joel Brobecker [Thu, 4 Jan 2018 08:10:34 +0000 (03:10 -0500)]
Add new gdb.ada/bp_c_mixed_case testcase for PR gdb/22670

This patch adds a new testcase to demonstrate a regression introduced by:

    commit b5ec771e60c1a0863e51eb491c85c674097e9e13
    Date:   Wed Nov 8 14:22:32 2017 +0000
    Subject: Introduce lookup_name_info and generalize Ada's FULL/WILD name matching

The purpose of the testcase is to verify that a user can insert
a breakpoint on a C function while debugging Ada, even if the name
of the function includes uppercase letters, requiring us to use
Ada's "<...>" notation to tell the GDB that the symbol name should
be looked up verbatim.

As of the commit above, GDB is no longer finding the function:

    (gdb) break <MixedCaseFunc>
    Function "<MixedCaseFunc>" not defined.
    Make breakpoint pending on future shared library load? (y or [n])

Before the patch, the breakpoint was inserted without problem.

gdb/testsuite/ChangeLog:

        PR gdb/22670
        * gdb.ada/bp_c_mixed_case: New testcase.

Tested on x86_64-linux; generates a KPASS before the regression
was introduced, and now generates a KFAIL.

6 years agoAdd "complete break ada" test to gdb.ada/complete.exp
Joel Brobecker [Thu, 4 Jan 2018 07:39:58 +0000 (02:39 -0500)]
Add "complete break ada" test to gdb.ada/complete.exp

This patch adds a new test to demonstrate a regression introduced by:

    commit b5ec771e60c1a0863e51eb491c85c674097e9e13
    Date:   Wed Nov 8 14:22:32 2017 +0000
    Subject: Introduce lookup_name_info and generalize Ada's FULL/WILD name matching

The original purpose of the new test is to exercise the "complete"
command with an expression for which a large number of matches are
returned and to verify that each match returned is a plausible match.
In this particular case, the commit above causes GDB to generate
additional matches which should in fact not appear in the list
(internally generated symbols, or symbols that should be enclosed
between "<...>"). These extraneous entries are easy to spot, because
they have uppercase characters, such as:

    break ada__stringsS
    break ada__strings__R11s
    [etc]

For now, the new test is KFAIL'ed, to avoid generating a new FAIL
while we work on fixing that regression.

gdb/testsuite/ChangeLog:

        PR gdb/22670
        * gdb.ada/complete.exp: Add "complete break ada" test.

Tested on x86_64-linux with GDB built before and after the patch
that caused the regression (b5ec771e60c1a0863e51eb491c85c674097e9e13).
The test passes before the regression, and generates a KFAIL after.

6 years agoAdd gdb.ada/info_addr_mixed_case new testcase
Joel Brobecker [Thu, 4 Jan 2018 04:28:14 +0000 (23:28 -0500)]
Add gdb.ada/info_addr_mixed_case new testcase

This patch adds a new testcase to demonstrate a regression introduced by:

    commit b5ec771e60c1a0863e51eb491c85c674097e9e13
    Date:   Wed Nov 8 14:22:32 2017 +0000
    Subject: Introduce lookup_name_info and generalize Ada's FULL/WILD name matching

The purpose of the testcase is to verify that a user can use any
casing for an Ada symbol name passed to the "info address" command.
After the patch above was applied, GDB was no longer able to find
the symbol:

    (gdb) info address My_Table
    No symbol "My_Table" in current context.

gdb/testsuite/ChangeLog:

PR gdb/22670
* gdb.ada/info_addr_mixed_case: New testcase.

Tested on x86_64-linux, both before and after the patch.

6 years agoAutomatic date update in version.in
GDB Administrator [Thu, 4 Jan 2018 00:00:20 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoCreate pseudo sections for FreeBSD NT_PROCSTAT_(PROC|FILES|VMMAP) notes.
John Baldwin [Wed, 3 Jan 2018 20:06:26 +0000 (12:06 -0800)]
Create pseudo sections for FreeBSD NT_PROCSTAT_(PROC|FILES|VMMAP) notes.

bfd/ChangeLog:

* elf.c (elfcore_grok_freebsd_note): Handle
NT_FREEBSD_PROCSTAT_PROC, NT_FREEBSD_PROCSTAT_FILES, and
NT_FREEBSD_PROCSTAT_VMMAP.

6 years agoFix compile time warning introduced by previous delta.
Nick Clifton [Wed, 3 Jan 2018 17:32:59 +0000 (17:32 +0000)]
Fix compile time warning introduced by previous delta.

* objcopy.c (merge_gnu_build_notes): Add cast to maximum address
constants.

6 years agoAdd support for v3 binary annotation notes.
Nick Clifton [Wed, 3 Jan 2018 10:28:33 +0000 (10:28 +0000)]
Add support for v3 binary annotation notes.

  I am checking in the attached patch which updates the binutils
  support for version 3 binary annotation notes.  (Version 3 adds
  an end address to the ranges covered by the notes, so that it
  is possible to detect gaps in the coverage).

  This patch also stops the note merging feature of objcopy from
  executing if the notes have relocations against them.  This makes the
  code simpler, and prevents the problems with architectures which have
  unusual relocation management issues.

* objcopy.c (objcopy_internal_note): New structure.
(gap_exists): New function.
(is_open_note): New function.
(is_func_note): New function.
(is_64bit): New function.
(merge_gnu_build_notes): Handle v3 notes.  Do not merge
if there are relocations against the notes.
* readelf.c (get_note_type): Use short names for build attribute
notes.
(print_symbol_for_build_attribute): Rename to
get_symbol_for_build_attribute.  Returns the found symbol rather
than printing it.
(print_gnu_build_attribute_description): Maintain address ranges
for function notes as well as global notes.  Handle v3 notes.
(print_gnu_build_attribute_name): Use more space for printing the
name in wide mode.
* testsuite/binutils-all/note-2-32.s: Use .dc.l instead of .word.
Eliminate symbol references in order to remove the need for
relocations.
* testsuite/binutils-all/note-2-64.s: Likewise.
* testsuite/binutils-all/note-3-32.s: Add a size to the note_1
symbol.
* testsuite/binutils-all/note-3-64.s: Likewise.
* testsuite/binutils-all/mips/mips-note-2r-n32.d: Update expected
output.
* testsuite/binutils-all/mips/mips-note-2r-n64.d: Likewise.
* testsuite/binutils-all/mips/mips-note-2r.d: Likewise.
* testsuite/binutils-all/note-2-32.d: Likewise.
* testsuite/binutils-all/note-2-64.d: Likewise.
* testsuite/binutils-all/note-3-32.d: Likewise.
* testsuite/binutils-all/note-3-64.d: Likewise.
* testsuite/binutils-all/note-4-64.s: New test.  Checks v3 notes.
* testsuite/binutils-all/note-4-32.s: New test.
* testsuite/binutils-all/note-4-64.d: New test result file.
* testsuite/binutils-all/note-4-32.d: New test result file.

6 years ago(Ada) New command to stop at start of exception handler.
Xavier Roirand [Wed, 22 Nov 2017 09:40:39 +0000 (10:40 +0100)]
(Ada) New command to stop at start of exception handler.

When using gdb for debugging Ada source code, there are several catchpoint
types you can define in order to stop upon certain conditions.  Let's
use this small example:

procedure Foo is
begin
   begin
      raise Constraint_Error;
   exception
      when Program_Error =>
         null;
      when Constraint_Error =>
         null;
      when others =>
         null;
   end;
end Foo;

One can stop when the exception is being raised by using the exception
catchpoint like below:

(gdb) catch exception
Catchpoint 1: all Ada exceptions
(gdb)

In that case, when running Foo, gdb will stop at the line where the exception
was raised:

   begin
>>>   raise Constraint_Error;
   exception

This patch introduces new type of catchpoint, when the user wants to stop
at the location of the exception handling.
Imagine we want to stop on any exception handled by the program, we can do:

(gdb) catch handlers
Catchpoint 1: all Ada exceptions handlers
(gdb) r
Starting program: /tmp/foo

By doing so, when running Foo, gdb will stop here:

Catchpoint 1, exception at 0x000000000040255a in foo () at foo.adb:25
25          when Constraint_Error =>
(gdb)

It is also possible to stop when the Constraint_Error exception is being
handled in this program.  With this patch, we can use:

(gdb) catch handlers Constraint_Error
Catchpoint 1: `Constraint_Error' Ada exception handlers
(gdb)

Like for other catchpoint, you can set a condition when adding a catchpoint
on exception handlers.
Here the handlers catchpoint checks Global_Var:

(gdb) catch handlers Constraint_Error if Global_Var /= 0

gdb/ChangeLog:

        * ada-lang.h (ada_exception_catchpoint_kind) <ada_catch_handlers>:
        Add field.
        * ada-lang.c (struct exception_support_info) <catch_handlers_sym>:
        Add field.
        (default_exception_support_info) <catch_handlers_sym>: Add field.
        (exception_support_info_fallback) <catch_handlers_sym>: Add field.
        (ada_exception_name_addr_1): Add "catch handlers" handling.
        (ada_exception_catchpoint_cond_string) <ex>: New parameter.
        Update all callers.
        (create_excep_cond_exprs) <ex>: Add parameter.
        (re_set_exception): Update create_excep_cond_exprs call.
        (print_it_exception, print_one_exception, print_mention_exception)
        (print_recreate_exception): Add "catch handler" handling.
        (allocate_location_catch_handlers, re_set_catch_handlers)
        (check_status_catch_handlers, print_it_catch_handlers)
        (print_one_catch_handlers, print_mention_catch_handlers)
        (print_recreate_catch_handlers): New function.
        (catch_handlers_breakpoint_ops): New variable.
        (catch_ada_exception_command_split) <is_catch_handlers_cmd>:
        Add parameter.  Add "catch handler" handling.
        (ada_exception_sym_name, ada_exception_breakpoint_ops):
        Add "catch handler" handling.
        (ada_exception_catchpoint_cond_string): Add "catch handler"
        handling.
        (create_ada_exception_catchpoint): Update create_excep_cond_exprs
        call.
        (catch_ada_handlers_command): New function.
        (initialize_ada_catchpoint_ops): Initialize "catch handlers"
        operations structure.
        (_initialize_ada_language): Add "catch handlers" command entry.
        * NEWS: Document "catch handlers" feature.

gdb/doc/ChangeLog:

        * gdb.texinfo (Set Catchpoints): Add documentation for new
        "catch handlers" action.

gdb/testsuite/ChangeLog:

        * gdb.ada/excep_handle.exp: New testcase.
        * gdb.ada/excep_handle/foo.adb: New file.
        * gdb.ada/excep_handle/pck.ads: New file.

Tested on x86_64-linux.

6 years agoUpdate year range in copyright notice of binutils files
Alan Modra [Wed, 3 Jan 2018 05:17:27 +0000 (15:47 +1030)]
Update year range in copyright notice of binutils files

6 years agoChangeLog rotation
Alan Modra [Wed, 3 Jan 2018 05:15:17 +0000 (15:45 +1030)]
ChangeLog rotation

6 years agoUnbreak spurious fails in gdb.base/step-line.exp
Joel Brobecker [Wed, 3 Jan 2018 03:50:38 +0000 (07:50 +0400)]
Unbreak spurious fails in gdb.base/step-line.exp

My copyright year update in the copyright headers of the step-line
testcase caused it to start failing, due to shift in line numbers.

    FAIL: gdb.base/step-line.exp: continue to f1
    FAIL: gdb.base/step-line.exp: next to dummy 2
    FAIL: gdb.base/step-line.exp: next over dummy 2
    FAIL: gdb.base/step-line.exp: step into f2
    FAIL: gdb.base/step-line.exp: next over dummy 4
    FAIL: gdb.base/step-line.exp: next to dummy 5
    FAIL: gdb.base/step-line.exp: next to dummy 6
    FAIL: gdb.base/step-line.exp: next over dummy 6
    FAIL: gdb.base/step-line.exp: next to dummy 7
    FAIL: gdb.base/step-line.exp: next to dummy 8
    FAIL: gdb.base/step-line.exp: next over dummy 8
    FAIL: gdb.base/step-line.exp: next to dummy 9
    FAIL: gdb.base/step-line.exp: next to dummy 10
    FAIL: gdb.base/step-line.exp: next over dummy 10

This was caused by the copyright.py script after I changed it to
also update this testcase, which made the following transformation:

    -   Copyright (C) 2001-2017
    -   Free Software Foundation, Inc.
    +   Copyright (C) 2001-2018 Free Software Foundation, Inc.

We can easily unbreak the testcase without having to go back to
manual edits each year by adding an extra line in the header.

gdb/testsuite/ChangeLog:

* gdb.base/step-line.c: Add extra empty line in copyright header.
        * gdb.base/step-line.inp: Likewise.

Tested on x86_64-linux.

6 years agoAutomatic date update in version.in
GDB Administrator [Wed, 3 Jan 2018 00:00:31 +0000 (00:00 +0000)]
Automatic date update in version.in

6 years agoFix compile time warning (in the ARM simulator) about a print statement with insuffic...
Nick Clifton [Tue, 2 Jan 2018 17:15:16 +0000 (17:15 +0000)]
Fix compile time warning (in the ARM simulator) about a print statement with insufficient arguments.

PR 22663
* maverick.c (DSPCDP4): Add missing parameter to debug print
statement.

6 years agoFix typo in do_mrs function in ARM assembler.
Nick Clifton [Tue, 2 Jan 2018 12:13:17 +0000 (12:13 +0000)]
Fix typo in do_mrs function in ARM assembler.

PR 18119
* config/tc-arm.c (do_mrs): Fix test of bits 16-19 in non-banked
version of ARM MRS instruction.

6 years agox86: partial revert of 10c17abdd0
Jan Beulich [Tue, 2 Jan 2018 10:44:04 +0000 (11:44 +0100)]
x86: partial revert of 10c17abdd0

Other than the variables in tc-i386.c using them, OPERAND_TYPE_REGYMM
and OPERAND_TYPE_REGZMM they aren't entirely unused. No need to update
i386-init.h though, as it mistakenly wasn't updated by the original
commit.

6 years ago[gdb/Ada] slices of arrays with dynamic strides
Joel Brobecker [Tue, 2 Jan 2018 03:53:55 +0000 (22:53 -0500)]
[gdb/Ada] slices of arrays with dynamic strides

    Consider the following Ada code:

       procedure Nested (L, U : Integer) is
          subtype Small_Type is Integer range L .. U;
          type Record_Type (I : Small_Type := L) is record
             S : String (1 .. I);
          end record;
          type Array_Type is array (Integer range <>) of Record_Type;

          A1 : Array_Type :=
            (1 => (I => 0, S => <>),
             2 => (I => 1, S => "A"),
             3 => (I => 2, S => "AB"));

          procedure Discard (R : Record_Type) is
          begin
             null;
          end Discard;

       begin
          Discard (A1 (1));  -- STOP
       end;

Trying to print a slice of that array currently yields:

    (gdb) p a1(1..3)
    $1 = ((i => 0, s => ""), (i => 0, s => ""), (i => 0, s => ""))

We expected instead:

    (gdb) p a1(1..3)
    $1 = ((i => 0, s => ""), (i => 1, s => "A"), (i => 2, s => "AB"))

This is because the functions we use in ada-lang.c to create the type
of the array slice (ada_value_slice and ada_value_slice_from_ptr) was
not taking into account the stride of the array. This patch fixes this.

gdb/ChangeLog:

        * ada-lang.c (ada_value_slice_from_ptr): Take array stride into
        account when creating the array type of the slice.
        (ada_value_slice): Likewise.

gdb/testsuite/ChangeLog:

        * gdb.ada/dyn_stride.exp: Add slice test.

Note that, with the current use of ada_value_slice, the enhancement
to handle dynamic array strides seems unnecessary, because I do not
see how an array with a dynamic stride can be referenced by either
by reference or pointer. Since references are coerced to array pointers,
in both cases, the slice is performed by ada_value_slice_from_ptr.
But ada_value_slice is enhanced nonetheless, in the spirit of making
the code more robust, in case we missed something, and also as similar
as possible with its from_ptr counterpart.

tested on x86_64-linux.

6 years agoAdd support for dynamic DW_AT_byte_stride.
Joel Brobecker [Tue, 2 Jan 2018 03:47:18 +0000 (22:47 -0500)]
Add support for dynamic DW_AT_byte_stride.

This patch adds support for DW_AT_byte_stride, using Ada as one
example of where this would be useful. However, the implementation
is language-agnostic.

Consider the following Ada code:

   procedure Nested (L, U : Integer) is
      subtype Small_Type is Integer range L .. U;
      type Record_Type (I : Small_Type := L) is record
         S : String (1 .. I);
      end record;
      type Array_Type is array (Integer range <>) of Record_Type;

      A1 : Array_Type :=
        (1 => (I => 0, S => <>),
         2 => (I => 1, S => "A"),
         3 => (I => 2, S => "AB"));

      procedure Discard (R : Record_Type) is
      begin
         null;
      end Discard;

   begin
      Discard (A1 (1));  -- STOP
   end;

It defines an array A1 of Record_Type, which is a variant record
type whose maximum size actually depends on the value of the
parameters passed when calling Nested. As a result, the stride
of the array A1 cannot be known statically, which leads the compiler
to generate a dynamic DW_AT_byte_stride attribute for our type.
Here is what the debugging info looks like with GNAT:

        .uleb128 0x10   # (DIE (0x14e) DW_TAG_array_type)
        .long   .LASF17 # DW_AT_name: "foo__nested__T18b"
        .long   0x141   # DW_AT_byte_stride
        .long   0xdc    # DW_AT_type
        .uleb128 0x11   # (DIE (0x15f) DW_TAG_subrange_type)
        .long   0x166   # DW_AT_type
        .byte   0x3     # DW_AT_upper_bound
        .byte   0       # end of children of DIE 0x14e

There DW_AT_byte_stride is a reference to a local (internal)
variable:

        .uleb128 0x9    # (DIE (0x141) DW_TAG_variable)
        .long   .LASF6  # DW_AT_name: "foo__nested__T18b___PAD___XVZ"

This patch enhances GDB to handle this dynamic byte stride attribute
by first adding a new dynamic_prop_node_kind (DYN_PROP_BYTE_STRIDE)
to store the array dynamic stride info (when dynamic). It then enhances
the dynamic type resolver to handle this dynamic property.

Before applying this patch, trying to print the value of some of
A1's elements after having stopped at the "STOP" comment does not
work. For instance:

    (gdb) p a1(2)
    Cannot access memory at address 0x80000268dec0

With this patch applied, GDB now prints the value of all 3 elements
correctly:

    (gdb) print A1(1)
    $1 = (i => 0, s => "")
    (gdb) print A1(2)
    $2 = (i => 1, s => "A")
    (gdb) print A1(3)
    $3 = (i => 2, s => "AB")

gdb/ChangeLog:

        * gdbtypes.h (enum dynamic_prop_node_kind) <DYN_PROP_BYTE_STRIDE>:
        New enum value.
        (create_array_type_with_stride): Add byte_stride_prop parameter.
        * gdbtypes.c (create_array_type_with_stride) <byte_stride_prop>:
        New parameter.  Update all callers in this file.
        (array_type_has_dynamic_stride): New function.
        (is_dynamic_type_internal, resolve_dynamic_array): Add handling
        of arrays with dynamic byte strides.
        * dwarf2read.c (read_array_type): Add support for dynamic
        DW_AT_byte_stride attributes.

gdb/testsuite/ChangeLog:

        * gdb.ada/dyn_stride: New testcase.

Tested on x86_64-linux.

6 years agotreat Ada DW_TAG_unspecified_type DIEs as stub types
Joel Brobecker [Tue, 2 Jan 2018 03:41:36 +0000 (22:41 -0500)]
treat Ada DW_TAG_unspecified_type DIEs as stub types

Consider the gdb.ada/taft_type.exp testcase, which exercises
the situation where a variable is defined using a type which
is a pointer to an incomplete type, with the actual type
definition being provided by another unit. Up to now, the
strategy used by GNAT when generating the DWARF debugging info
was to produce a incomplete DW_TAG_enumeration_type DIE with
a DW_AT_declaration flag attached to it:

        .uleb128 0x4    # (DIE (0x3e) DW_TAG_enumeration_type)
        .long   .LASF4  # DW_AT_name: "pck__empty"
                        # DW_AT_declaration

However, a more standard way for the compiler to describe
this kind of type is to use the DW_TAG_unspecified_type tag.
When the compiler is enhanced to do so, we'll need to treat
such types as stubs -- we only do so with types from Ada units,
however, as the meaning of this TAG is intentionally left
permissive and language-specific by the DWARF standard.

Without this patch, running the testcase above with an enhanced
compiler now yields:

    (gdb) print w.e.all
    Attempt to dereference a generic pointer.
    FAIL: gdb.ada/taft_type.exp: print w.e.all

gdb/ChangeLog:

* dwarf2read.c (read_unspecified_type): Treat
        DW_TAG_enumeration_type DIEs from Ada units as stubs.

Tested on x86_64-linux, fixes the FAIL in gdb.ada/taft_type.exp above.

6 years agoUpdate copyright year range in all GDB files
Joel Brobecker [Mon, 1 Jan 2018 04:43:02 +0000 (08:43 +0400)]
Update copyright year range in all GDB files

gdb/ChangeLog:

        Update copyright year range in all GDB files

6 years agogdb/copyright.py: Remove testsuite/gdb.base/step-line.{c,inp} special handling
Joel Brobecker [Mon, 1 Jan 2018 04:18:16 +0000 (08:18 +0400)]
gdb/copyright.py: Remove testsuite/gdb.base/step-line.{c,inp} special handling

In the past, these files needed to be handled by hand, because
the testcase was sensitive to the length of the header, which was
potentially changing when new copyright years were added to
the copyright header. Now that we simply maintain and update
a range, the length of the copyright header should not change
as a consequence of the update performed by this script, so
special handling of those files is no longer necessary.

gdb/ChangeLog:

        * copyright.py (BY_HAND): Remove gdb/testsuite/gdb.base/step-line.inp
        and gdb/testsuite/gdb.base/step-line.c.

6 years agogdb/copyright.py: Do not forget to remind about MULTIPLE_COPYRIGHT_HEADERS
Joel Brobecker [Mon, 1 Jan 2018 04:30:28 +0000 (08:30 +0400)]
gdb/copyright.py: Do not forget to remind about MULTIPLE_COPYRIGHT_HEADERS

There is a small logical error in the part of the script that
dumps the list of files in BY_HAND + MULTIPLE_COPYRIGHT_HEADERS
but only checkis the contents of BY_HAND. The issue becomes
apparent as soon as BY_HAND is empty. Prevent this from happening
by treating the two lists separately, as this allows us to provide
a more informative message in the case of MULTIPLE_COPYRIGHT_HEADERS.

gdb/ChangeLog:

        * copyright.py (main): Dump the contents of
        MULTIPLE_COPYRIGHT_HEADERS (separately) from BY_HAND,
        even if BY_HAND is empty.

6 years agoUpdate copyright year in version message of GDB, GDBserver and GDBreplay
Joel Brobecker [Mon, 1 Jan 2018 04:12:21 +0000 (08:12 +0400)]
Update copyright year in version message of GDB, GDBserver and GDBreplay

gdb/ChangeLog:

* top.c (print_gdb_version): Update Copyright year in version
message.

gdb/gdbserver/ChangeLog:

* gdbreplay.c (gdbreplay_version): Update copyright year in
version message.
* server.c (gdbserver_version): Likewise.

6 years agoYearly rotation of the gdb/ChangeLog file
Joel Brobecker [Mon, 1 Jan 2018 04:07:25 +0000 (08:07 +0400)]
Yearly rotation of the gdb/ChangeLog file

gdb/ChangeLog

        * config/djgpp/fnchange.lst: Add entry for gdb/ChangeLog-2017.