deliverable/binutils-gdb.git
4 years agogdb/fortran: Add test for module variables in 'info variables' output
Andrew Burgess [Wed, 24 Jul 2019 13:00:07 +0000 (14:00 +0100)] 
gdb/fortran: Add test for module variables in 'info variables' output

Recent work from Tom Tromey to better handle variables with associated
copy relocations has fixed a Fortran issue where module variables
wouldn't show up in the output of 'info variables'.

This commit adds a test for this functionality to ensure it doesn't
get broken in the future.

gdb/testsuite/ChangeLog:

* gdb.fortran/module.exp: Extend with 'info variables' test.

Change-Id: I7306b1d0a9a72947fd48ad7a03f49df774d6573b

4 years agogdb/testsuite: Allow cc-with-tweaks board file to be used with Fortran
Andrew Burgess [Thu, 29 Aug 2019 15:07:01 +0000 (16:07 +0100)] 
gdb/testsuite: Allow cc-with-tweaks board file to be used with Fortran

The board file cc-with-tweaks is used as the core for lots of other
board files, for example cc-with-gdb-index and cc-with-debug-names.
This commit extends cc-with-tweaks so that it will wrap the Fortran
compiler, allowing for more test coverage.

I tested all of the board files that make use of cc-with-tweaks
running the gdb.fortran/*.exp test set, and in some cases I did see
extra failures.  The "standard" results are:

                    === gdb Summary ===

    # of expected passes            953
    # of known failures             2

With board file 'cc-with-dwz-m':

                    === gdb Summary ===

    # of expected passes            903
    # of unexpected failures        1
    # of known failures             2
    # of untested testcases         4

With board file 'dwarf4-gdb-index':

                    === gdb Summary ===

    # of expected passes            950
    # of unexpected failures        3
    # of known failures             2

With board file 'fission-dwp':

                    === gdb Summary ===

    # of expected passes            949
    # of unexpected failures        4
    # of known failures             2

Despite these extra failure I don't think this should prevent this
change going in as these failures presumably already exist in GDB.

gdb/testsuite/ChangeLog:

* boards/cc-with-tweaks.exp: Setup F90_FOR_TARGET and
F77_FOR_TARGET.

Change-Id: I06d412f94d0e119ad652dd6c20829f6705a54622

4 years agoAllow not saving the signal state in SIGSETJMP
Christian Biesinger [Tue, 15 Oct 2019 15:02:33 +0000 (10:02 -0500)] 
Allow not saving the signal state in SIGSETJMP

Saving the signal state is very slow (this patch is a 14% speedup).  The
reason we need this code is because signal handler will leave the
signal blocked when we longjmp out of it.  But in this case we can
just manually unblock the signal instead of taking the unconditional
perf hit.

gdb/ChangeLog:

2019-10-16  Christian Biesinger  <cbiesinger@google.com>

* gdbsupport/gdb_setjmp.h (SIGSETJMP): Allow passing in the value to
pass on to sigsetjmp's second argument.
* cp-support.c (gdb_demangle): Unblock SIGSEGV if we caught a crash.

Change-Id: Ib3010966050c64b4cc8b47d8cb45871652b0b3ea

4 years agoDWARF reader: Reject sections with invalid sizes
Keith Seitz [Wed, 16 Oct 2019 18:33:59 +0000 (11:33 -0700)] 
DWARF reader: Reject sections with invalid sizes

This is another fuzzer bug, gdb/23567.  This time, the fuzzer has
specifically altered the size of .debug_str:

$ eu-readelf -S objdump
Section Headers:
[Nr] Name                 Type         Addr             Off      Size     ES Flags Lk Inf Al
[31] .debug_str           PROGBITS     0000000000000000 0057116d ffffffffffffffff  1 MS     0   0  1

When this file is loaded into GDB, the DWARF reader crashes attempting
to access the string table (or it may just store a bunch of nonsense):

[gdb-8.3-6-fc30]
$ gdb -nx -q objdump
BFD: warning: /path/to/objdump has a corrupt section with a size (ffffffffffffffff) larger than the file size
Reading symbols from /path/to/objdump...
Segmentation fault (core dumped)

Nick has already committed a BFD patch to issue the warning seen above.

[gdb master 6acc1a0b]
$ gdb -BFD: warning: /path/to/objdump has a corrupt section with a size (ffffffffffffffff) larger than the file size
Reading symbols from /path/to/objdump...
(gdb) inf func
All defined functions:

File ./../include/dwarf2.def:
186: const

              8 *>(.:
                     ;'@�B);
747: const

              8 *�(.:
                     ;'@�B);
701: const

              8 *�D �
                     (.:
                        ;'@�B);
71: const

              8 *(.:
                    ;'@�B);
/* and more gibberish  */

Consider read_indirect_string_at_offset_from:

static const char *
read_indirect_string_at_offset_from (struct objfile *objfile,
                                     bfd *abfd, LONGEST str_offset,
                                     struct dwarf2_section_info *sect,
                                     const char *form_name,
                                     const char *sect_name)
{
  dwarf2_read_section (objfile, sect);
  if (sect->buffer == NULL)
    error (_("%s used without %s section [in module %s]"),
           form_name, sect_name, bfd_get_filename (abfd));
  if (str_offset >= sect->size)
    error (_("%s pointing outside of %s section [in module %s]"),
           form_name, sect_name, bfd_get_filename (abfd));
  gdb_assert (HOST_CHAR_BIT == 8);
  if (sect->buffer[str_offset] == '\0')
    return NULL;
  return (const char *) (sect->buffer + str_offset);
}

With sect_size being ginormous, the code attempts to access
sect->buffer[GINORMOUS], and depending on the layout of memory,
GDB either stores a bunch of gibberish strings or crashes.

This is an attempt to mitigate this by implementing a similar approach
used by BFD. In our case, we simply reject the section with the invalid
length:

$ ./gdb -nx -q objdump
BFD: warning: /path/to/objdump has a corrupt section with a size (ffffffffffffffff) larger than the file size
Reading symbols from /path/to/objdump...

warning: Discarding section .debug_str which has a section size (ffffffffffffffff) larger than the file size [in module /path/to/objdump]
DW_FORM_strp used without .debug_str section [in module /path/to/objdump]
(No debugging symbols found in /path/to/objdump)
(gdb)

Unfortunately, I have not found a way to regression test this, since it
requires poking ELF section headers.

gdb/ChangeLog:
2019-10-16  Keith Seitz  <keiths@redhat.com>

PR gdb/23567
* dwarf2read.c (dwarf2_per_objfile::locate_sections): Discard
sections whose size is greater than the file size.

Change-Id: I896ac3b4eb2207c54e8e05c16beab3051d9b4b2f

4 years agoAdd initial compile command support to RISC-V port.
Jim Wilson [Wed, 16 Oct 2019 17:58:37 +0000 (10:58 -0700)] 
Add initial compile command support to RISC-V port.

This adds initial compile command support to the RISC-V port.  This fixes
about 228 testsuite failures on a riscv64-linux machine.  We need to get
the triplet right which is normally riscv64 or riscv32 instead of the
default riscv.  Also, we need to get the compiler options right, since we
don't accept the default -m64 and -mcmodel=large options, so we need to
construct -march and -mabi options which are correct for the target.  We
currently don't have info about all extensions used by the target, so this
may need to be adjusted later.  For now, I'm assuming that we have all
extensions required by the linux platform spec.

gdb/
* riscv-tdep.c (riscv_gcc_target_options): New.
(riscv_gnu_triplet_regexp): New.
(riscv_gdbarch_init): Call set_gdbarch_gcc_triplet_options and
set_gdbarch_gnu_triplet_regexp.

Change-Id: I315ce8de7789ddf7bdd3b532f917519464941294

4 years agoCreate xml-builtin.h to declare xml_builtins
Christian Biesinger [Thu, 10 Oct 2019 01:08:13 +0000 (20:08 -0500)] 
Create xml-builtin.h to declare xml_builtins

xml-builtin.c only has character arrays and no dependencies, so this
creates a simple header file for that purpose so that gdbserver
can include that instead of re-declaring xml_builtin.

Despite the name, feature_to_c.sh is already specific to xml_builtins
(it hardcodes the variable name), so making it always output the
include for xml-builtin.h seems fine.

gdb/ChangeLog:

2019-10-16  Christian Biesinger  <cbiesinger@google.com>

* Makefile.in: Add xml-builtin.h.
* features/feature_to_c.sh: Add an include for xml-builtin.h
to ensure that the compiler checks that the types match.
* xml-builtin.h: New file.
* xml-support.c (fetch_xml_builtin): Add missing const.
* xml-support.h: Remove declaration of xml_builtins.

gdb/gdbserver/ChangeLog:

2019-10-16  Christian Biesinger  <cbiesinger@google.com>

* server.c: Include xml-builtin.h.
(get_xml_features): Don't declare xml_builtins here.

Change-Id: I806ef0851c43ead90b545a11794e41f5e5178436

4 years agolibctf: mark swap.h inline functions as static
Simon Marchi [Wed, 16 Oct 2019 15:11:28 +0000 (11:11 -0400)] 
libctf: mark swap.h inline functions as static

When building binutils with mingw-w64, I get the following errors:

    make[4]: Entering directory '/home/simark/build/binutils-gdb-mingw/binutils'
    /bin/sh ./libtool  --tag=CC   --mode=link ccache x86_64-w64-mingw32-gcc -W -Wall -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Wstack-usage=262144 -Wno-format -Werror -I/home/simark/src/binutils-gdb/binutils/../zlib -g3 -O0 -D__USE_MINGW_ACCESS  -Wl,--stack,12582912 -o objdump.exe objdump.o dwarf.o prdbg.o rddbg.o debug.o stabs.o rdcoff.o bucomm.o version.o filemode.o elfcomm.o  ../opcodes/libopcodes.la ../libctf/libctf.la ../bfd/libbfd.la ../libiberty/libiberty.a -lintl
    libtool: link: ccache x86_64-w64-mingw32-gcc -W -Wall -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Wstack-usage=262144 -Wno-format -Werror -I/home/simark/src/binutils-gdb/binutils/../zlib -g3 -O0 -D__USE_MINGW_ACCESS -Wl,--stack -Wl,12582912 -o .libs/objdump.exe objdump.o dwarf.o prdbg.o rddbg.o debug.o stabs.o rdcoff.o bucomm.o version.o filemode.o elfcomm.o  ../opcodes/.libs/libopcodes.a ../libctf/.libs/libctf.a -L/home/simark/build/binutils-gdb-mingw/zlib ../bfd/.libs/libbfd.a -lz ../libiberty/libiberty.a -lintl
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: ../libctf/.libs/libctf.a(ctf-open.o): in function `flip_header':
    /home/simark/src/binutils-gdb/libctf/ctf-open.c:964: undefined reference to `bswap_16'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:967: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:968: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:969: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:970: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:971: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: ../libctf/.libs/libctf.a(ctf-open.o):/home/simark/src/binutils-gdb/libctf/ctf-open.c:972: more undefined references to `bswap_32' follow
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: ../libctf/.libs/libctf.a(ctf-open.o): in function `flip_types':
    /home/simark/src/binutils-gdb/libctf/ctf-open.c:1112: undefined reference to `bswap_16'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:1113: undefined reference to `bswap_16'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:1132: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:1133: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:1134: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:1135: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: /home/simark/src/binutils-gdb/libctf/ctf-open.c:1144: undefined reference to `bswap_32'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: ../libctf/.libs/libctf.a(ctf-open.o):/home/simark/src/binutils-gdb/libctf/ctf-open.c:1145: more undefined references to `bswap_32' follow
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: ../libctf/.libs/libctf.a(ctf-open.o): in function `ctf_bufopen_internal':
    /home/simark/src/binutils-gdb/libctf/ctf-open.c:1342: undefined reference to `bswap_16'
    /usr/lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld: ../libctf/.libs/libctf.a(ctf-open-bfd.o): in function `ctf_fdopen':
    /home/simark/src/binutils-gdb/libctf/ctf-open-bfd.c:268: undefined reference to `bswap_16'

Apparently [1], if we have a function with `inline` but not `static`,
there should be a compilation unit defining the symbol too.
Alternatively, making those functions `static` fixes that.

[1] https://stackoverflow.com/questions/16245521/c99-inline-function-in-c-file/16254679#16254679

libctf/ChangeLog:

* swap.h (bswap_16, bswap_32, bswap_64): Make static.

Change-Id: I8fd12aedf6c90f9b7418af948e5e0bae0c32eead

4 years ago[gdb/tdep] Fix inferior call arg passing for amd64
Tom de Vries [Wed, 16 Oct 2019 15:11:56 +0000 (17:11 +0200)] 
[gdb/tdep] Fix inferior call arg passing for amd64

We currently have 12 KFAILS in gdb.base/infcall-nested-structs.exp for
PR tdep/25096.

A minimal version of the failure looks like this.  Consider test.c:
...
struct s { int c; struct { int a; float b; } s1; };
struct s ref = { 0, { 'a', 'b' } };

int __attribute__((noinline,noclone)) check (struct s arg)
{ return arg.s1.a == 'a' && arg.s1.b == 'b' && arg.c == 0; }

int main (void)
{ return check (ref); }
...

When calling 'check (ref)' from main, we have '1' as expected:
...
$ g++ test.c -g ; ./a.out ; echo $?
1
...

But when calling 'check (ref)' from the gdb prompt, we get '0':
...
$ gdb a.out -batch -ex start -ex "p check (ref)"
Temporary breakpoint 1 at 0x400518: file test.c, line 8.

Temporary breakpoint 1, main () at test.c:8
8       { return check (ref); }
$1 = 0
...

The layout of struct s is this:
- the field c occupies 4 bytes at offset 0,
- the s1.a field occupies 4 bytes at offset 4, and
- the s1.b field occupies 4 bytes at offset 8.

When compiling at -O2, we can see from the disassembly of main:
...
  4003f0:       48 8b 3d 31 0c 20 00    mov    0x200c31(%rip),%rdi \
                                               # 601028 <ref>
  4003f7:       f3 0f 10 05 31 0c 20    movss  0x200c31(%rip),%xmm0 \
                                               # 601030 <ref+0x8>
  4003fe:       00
  4003ff:       e9 ec 00 00 00          jmpq   4004f0 <_Z5check1s>
...
that check is called with fields c and s1.a passed in %rdi, and s1.b passed
in %xmm0.

However, the classification in theclass (a variable representing the first and
second eightbytes, to put it in SYSV X86_64 psABI terms) in
amd64_push_arguments is incorrect:
...
(gdb) p theclass
$1 = {AMD64_INTEGER, AMD64_INTEGER}
...
and therefore the struct is passed using %rdi and %rsi instead of using %rdi
and %xmm0, which explains the failure.

The reason that we're misclassifying the argument in amd64_classify_aggregate
has to do with how nested struct are handled.

Rather than using fields c and s1.a for the first eightbyte, and using field
s1.b for the second eightbyte, instead field c is used for the first
eightbyte, and fields s1.a and s1.b are classified together in an intermediate
eightbyte, which is then used to merge with both the first and second
eightbyte.

Fix this by factoring out a new function amd64_classify_aggregate_field, and
letting it recursively handle fields of nested structs.

Tested on x86_64-linux.

Tested with g++ 4.8.5, 7.4.1, 8.3.1, 9.2.1.

Tested with clang++ 5.0.2 (which requires removing additional_flags=-Wno-psabi
and adding additional_flags=-Wno-deprecated).

gdb/ChangeLog:

2019-10-16  Tom de Vries  <tdevries@suse.de>

PR tdep/25096
* amd64-tdep.c (amd64_classify_aggregate_field): Factor out of ...
(amd64_classify_aggregate): ... here.
(amd64_classify_aggregate_field): Handled fiels of nested structs
recursively.

gdb/testsuite/ChangeLog:

2019-10-16  Tom de Vries  <tdevries@suse.de>

PR tdep/25096
* gdb.base/infcall-nested-structs.exp: Remove PR25096 KFAILs.

Change-Id: Id55c74755f0a431ce31223acc86865718ae0c123

4 years ago[gdb/tdep] Fix 'Unexpected register class' assert in amd64_push_arguments
Tom de Vries [Wed, 16 Oct 2019 15:11:56 +0000 (17:11 +0200)] 
[gdb/tdep] Fix 'Unexpected register class' assert in amd64_push_arguments

Atm, when executing gdb.base/infcall-nested-structs.exp on x86_64-linux, we get:
...
FAIL: gdb.base/infcall-nested-structs.exp: l=c++: types-tc-tf: \
  p/d check_arg_struct_02_01 (ref_val_struct_02_01)
FAIL: gdb.base/infcall-nested-structs.exp: l=c++: types-ts-tf: \
  p/d check_arg_struct_02_01 (ref_val_struct_02_01)
FAIL: gdb.base/infcall-nested-structs.exp: l=c++: types-ti-tf: \
  p/d check_arg_struct_02_01 (ref_val_struct_02_01)

                === gdb Summary ===

nr of expected passes            9255
nr of unexpected failures        3
nr of expected failures          142
...

The 3 FAILs are reported as PR tdep/25096.

The 142 XFAILs are for a gdb assertion failure, reported in PR tdep/24104,
which should have been KFAILs since there's a problem in gdb rather than in
the environment.

A minimal version of the assertion failure looks like this. Consider test.c:
...
struct s { struct { } es1; long f; };
struct s ref = { {}, 'f' };

int __attribute__((noinline,noclone)) check (struct s arg)
{ return arg.f == 'f'; }

int main (void)
{ return check (ref); }
...

When calling 'check (ref)' from main, we have '1' as expected:
...
$ g++ test3.c -g && ( ./a.out; echo $? )
1
...

But when calling 'check (ref)' from the gdb prompt, we get:
...
$ gdb a.out -batch -ex start -ex "p check (ref)"
Temporary breakpoint 1 at 0x4004f7: file test.c, line 8.

Temporary breakpoint 1, main () at test.c:8
8       { return check (ref); }
src/gdb/amd64-tdep.c:982: internal-error: \
  CORE_ADDR amd64_push_arguments(regcache*, int, value**, CORE_ADDR, \
                                 function_call_return_method): \
  Assertion `!"Unexpected register class."' failed.
...

The assert happens in this loop in amd64_push_arguments:
...
          for (j = 0; len > 0; j++, len -= 8)
            {
              int regnum = -1;
              int offset = 0;

              switch (theclass[j])
                {
                case AMD64_INTEGER:
                  regnum = integer_regnum[integer_reg++];
                  break;

                case AMD64_SSE:
                  regnum = sse_regnum[sse_reg++];
                  break;

                case AMD64_SSEUP:
                  gdb_assert (sse_reg > 0);
                  regnum = sse_regnum[sse_reg - 1];
                  offset = 8;
                  break;

                default:
                  gdb_assert (!"Unexpected register class.");
                }
...
            }
...
when processing theclass[0], which is AMD64_NO_CLASS:
...
(gdb) p theclass
$1 = {AMD64_NO_CLASS, AMD64_INTEGER}
...

The layout of struct s is that the empty field es1 occupies one byte (due to
c++) at offset 0, and the long field f occupies 8 bytes at offset 8.

When compiling at -O2, we can see from the disassembly of main:
...
  4003f0:       48 8b 3d 41 0c 20 00    mov    0x200c41(%rip),%rdi \
                                               # 601038 <ref+0x8>
  4003f7:       e9 e4 00 00 00          jmpq   4004e0 <_Z5check1s>
  4003fc:       0f 1f 40 00             nopl   0x0(%rax)
...
that check is called with field f passed in %rdi, meaning that the
classification in theclass is correct, it's just not supported in the loop in
amd64_push_arguments mentioned above.

Fix the assert by implementing support for 'AMD64_NO_CLASS' in that loop.

This exposes 9 more FAILs of the PR tdep/25096 type, so mark all 12 of them as
KFAIL.

Tested on x86_64-linux.

Tested with g++ 4.8.5, 7.4.1, 8.3.1, 9.2.1.  With 4.8.5, 3 of the 12 KFAILs
are KPASSing.

Tested with clang++ 5.0.2 (which requires removing additional_flags=-Wno-psabi
and adding additional_flags=-Wno-deprecated).

gdb/ChangeLog:

2019-10-16  Tom de Vries  <tdevries@suse.de>

PR tdep/24104
* amd64-tdep.c (amd64_push_arguments): Handle AMD64_NO_CLASS in loop
that handles 'theclass'.

gdb/testsuite/ChangeLog:

2019-10-16  Tom de Vries  <tdevries@suse.de>

PR tdep/24104
* gdb.base/infcall-nested-structs.exp: Remove XFAIL for PR tdep/24104.
Add KFAIL for PR tdep/25096.

Change-Id: I8b66345bbf5c00209ca75b1209fd4d60b36e9ede

4 years ago[gdb/testsuite] Fix local-static.exp with g++-4.8
Tom de Vries [Wed, 16 Oct 2019 15:00:04 +0000 (17:00 +0200)] 
[gdb/testsuite] Fix local-static.exp with g++-4.8

With g++-4.8, I see:
...
(gdb) PASS: gdb.cp/local-static.exp: c++: print free_inline_func(void)
print 'S::method()'::S_M_s_var_int^M
No symbol "S_M_s_var_int" in specified context.^M
(gdb) FAIL: gdb.cp/local-static.exp: c++: print 'S::method()'::S_M_s_var_int
...

The variable is declared like this (showing pruned .ii):
...
void S::method ()
{
  static int S_M_s_var_int = 4;
}
...

But the DWARF generated for the variable is encapsulated in an unnamed lexical
block:
...
 <1><121>: Abbrev Number: 5 (DW_TAG_structure_type)
    <122>   DW_AT_name        : S
    ...
 <2><14f>: Abbrev Number: 6 (DW_TAG_subprogram)
    ...
    <150>   DW_AT_name        : (indirect string, offset: 0x599): method
    <156>   DW_AT_linkage_name: (indirect string, offset: 0x517): \
                                _ZN1S6methodEv /* demangled: dS::method() */
    ...
 <1><3f8>: Abbrev Number: 21 (DW_TAG_subprogram)
    <3f9>   DW_AT_specification: <0x14f>
    ...
    <3fe>   DW_AT_low_pc      : 0x4004fc
    <406>   DW_AT_high_pc     : 0x2c /* 0x400528 */
    ...
 <2><418>: Abbrev Number: 17 (DW_TAG_formal_parameter)
    <419>   DW_AT_name        : (indirect string, offset: 0x68a): this
    ...
 <2><424>: Abbrev Number: 18 (DW_TAG_lexical_block)
    <425>   DW_AT_low_pc      : 0x400508
    <42d>   DW_AT_high_pc     : 0x1e /* 0x400526 */
 <3><435>: Abbrev Number: 22 (DW_TAG_variable)
    <436>   DW_AT_name        : (indirect string, offset: 0x29d): S_M_s_var_int
...
which has the effect that the variable is not addressable unless the program
counter is in the range of the lexical block.

This is caused by gcc PR debug/55541, which was fixed in gcc 5.

Mark in total 225 FAILs as XFAIL.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-16  Tom de Vries  <tdevries@suse.de>

PR testsuite/25059
* gdb.cp/local-static.exp (do_test): Add xfails for gcc PR debug/55541.

Change-Id: Ibe86707eecffc79f1bb474d7928ea7d0c39a00a2

4 years ago[gdb/testsuite] Fix regexp for reg value in jit-reader.exp
Tom de Vries [Wed, 16 Oct 2019 14:53:37 +0000 (16:53 +0200)] 
[gdb/testsuite] Fix regexp for reg value in jit-reader.exp

On openSUSE Leap 15.1 (as well as on Fedora-x86_64-m64 buildbot) I see:
...
FAIL: gdb.base/jit-reader.exp: with jit-reader: after mangling: current frame: info registers
...

The problem is that r10 is printed signed:
...
r10            0xffffffffffffffb0  -80^M
...
but the regexp expects a signed value:
...
            "r10            $hex +$decimal" \
...

Fix this by allowing signed values.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-16  Tom de Vries  <tdevries@suse.de>

* gdb.base/jit-reader.exp: Allow non-pointer registers to be printed
as signed.

Change-Id: Ie494d24fad7a9af7ac6bfaf731c4aa04f1333830

4 years agoPR13616, linker should pad executable sections with nops, not zeros
Alan Modra [Wed, 16 Oct 2019 10:53:29 +0000 (21:23 +1030)] 
PR13616, linker should pad executable sections with nops, not zeros

This implements padding of orphan executable sections for PowerPC.
Of course, the simple implementation of bfd_arch_ppc_nop_fill and
removing the NOP definition didn't work, with powerpc64 hitting a
testsuite failure linking to S-records.  That's because the srec
target is BFD_ENDIAN_UNKNOWN so the test of bfd_big_endian (abfd) in
default_data_link_order therefore returned false, resulting in a
little-endian nop pattern.  The rest of the patch fixes that problem
by adding a new field to bfd_link_info that can be used to determine
actual endianness on targets like srec.

PR 13616
include/
* bfdlink.h (struct bfd_link_info <big_endian>): New field.
bfd/
* cpu-powerpc.c (bfd_arch_ppc_nop_fill): New function, use it
for all ppc arch info.
* linker.c (default_data_link_order): Pass info->big_endian to
arch_info->fill function.
ld/
* emulparams/elf64lppc.sh (NOP): Don't define.
* emulparams/elf64ppc.sh (NOP): Don't define.
* ldwrite.c (build_link_order): Use link_info.big_endian.  Move
code determining endian to use for data_statement to..
* ldemul.c (after_open_default): ..here.  Set link_info.big_endian.

4 years agoFix potential illegal memory access when disassembling corrupt RX binaries.
Nick Clifton [Wed, 16 Oct 2019 11:56:58 +0000 (12:56 +0100)] 
Fix potential illegal memory access when disassembling corrupt RX binaries.

opcodes * rx-dis.c (get_register_name): New function.  Provides safe
access to name array.
(get_condition_name, get_flag_name, get_double_register_name)
(get_double_register_high_name, get_double_register_low_name)
(get_double_control_register_name, get_double_condition_name):
Likewise.
(print_insn_rx): Use the accessor functions.

4 years agogenscripts comment tidy
Alan Modra [Tue, 15 Oct 2019 12:36:21 +0000 (23:06 +1030)] 
genscripts comment tidy

Some of the comments in this file are ancient and no longer reflect
reality.  This patch removes those comments, and also the description
of ld options emitted to script files.  While describing what an
option does in the script file might help reinforce what the option
does, it's unnecessary and makes for overlong lines.  Also, some of
the descriptions did not mention all the options.

* genscripts.sh: Correct comments.  Remove outdated comment block
saying "Generate 5 or 6 script files..".  Remove description of
ld options from comment emitted to script files, and order options
as per comment block in genscripts.sh saying which scripts are
generated.

4 years agoqsort: tc-xtensa.c tidy
Alan Modra [Tue, 15 Oct 2019 12:34:14 +0000 (23:04 +1030)] 
qsort: tc-xtensa.c tidy

Not much to see here, just reduce the number of calls to S_GET_VALUE
and symbol_symbolS in the comparison functions.

* config/tc-xtensa.c (xg_order_trampoline_chain_entry): Don't
call S_GET_VALUE multiple times for a symbol.  Rearrange code
so it is obvious what is the primary sort key.
(xg_order_trampoline_chain): Similarly.

4 years agoAutomatic date update in version.in
GDB Administrator [Wed, 16 Oct 2019 00:00:20 +0000 (00:00 +0000)] 
Automatic date update in version.in

4 years agogdb/gdbserver: Remove reference to vec-ipa.o
Andrew Burgess [Tue, 15 Oct 2019 21:00:05 +0000 (22:00 +0100)] 
gdb/gdbserver: Remove reference to vec-ipa.o

This comit:

    commit 0dc327459b19e6765c8fe80957f5c8620611628e
    Date:   Mon Oct 7 16:38:53 2019 +0100

        gdb: Remove vec.{c,h} and update code to not include vec.h

Broke the GDB build due to leaving a reference to vec-ipa.o in the
Makefile.in, this file is built from vec.c which has been removed.

I got away with this as I had an old version of the vec-ipa.o file
still in my build tree.

With this commit in place a clean build now completed successfully.

gdb/ChangeLog:

* Makefile.in: Remove references to vec-ipa.o.

Change-Id: I4cf55951158dd7ee8f60cd054311a7c367e1d7bf

4 years agogdb: Update comments that reference VEC or vec.h
Andrew Burgess [Mon, 7 Oct 2019 15:45:24 +0000 (16:45 +0100)] 
gdb: Update comments that reference VEC or vec.h

With the removal of the old VEC mechanism from the code base, update
comments that still make reference to VECs.  There should be no user
visible changes after this commit.

gdb/ChangeLog:

* linespec.c (decode_digits_ordinary): Update comment.
* make-target-delegates: No longer need to handle VEC case.
* memrange.c (normalize_mem_ranges): Update comment.
* namespace.c (add_using_directive): Update comment.
* objc-lang.c (uniquify_strings): Update comment.
* ppc-linux-nat.c (struct thread_points): Update comment.
* probe.h (find_probes_in_objfile): Update comment.
* target.h (enum flash_preserve_mode): Update comment.
* varobj.c (varobj_restrict_range): Update comment.
* varobj.h (varobj_list_children): Update comment.

Change-Id: Iefd2e903705c3e79cd13b43395c7a1c167f9a088

4 years agogdb: Remove vec.{c,h} and update code to not include vec.h
Andrew Burgess [Mon, 7 Oct 2019 15:38:53 +0000 (16:38 +0100)] 
gdb: Remove vec.{c,h} and update code to not include vec.h

Removes vec.c and vec.h from the source tree, and remove all the
remaining includes of vec.h.  There should be no user visible changes
after this commit.

I did have a few issues rebuilding GDB after applying this patch due
to cached dependencies, I found that running this command in the build
directory resolved my build issues without requiring a 'make clean':

    rm -fr gdb/gdbserver/gdbsupport/.deps/

gdb/ChangeLog:

* Makefile.in: Remove references to vec.h and vec.c.
* aarch64-tdep.c: No longer include vec.h.
* ada-lang.c: Likewise.
* ada-lang.h: Likewise.
* arm-tdep.c: Likewise.
* ax.h: Likewise.
* breakpoint.h: Likewise.
* charset.c: Likewise.
* cp-support.h: Likewise.
* dtrace-probe.c: Likewise.
* dwarf2read.c: Likewise.
* extension.h: Likewise.
* gdb_bfd.c: Likewise.
* gdbsupport/gdb_vecs.h: Likewise.
* gdbsupport/vec.c: Remove.
* gdbsupport/vec.h: Remove.
* gdbthread.h: Likewise.
* guile/scm-type.c: Likewise.
* inline-frame.c: Likewise.
* machoread.c: Likewise.
* memattr.c: Likewise.
* memrange.h: Likewise.
* namespace.h: Likewise.
* nat/linux-btrace.h: Likewise.
* osdata.c: Likewise.
* parser-defs.h: Likewise.
* progspace.h: Likewise.
* python/py-type.c: Likewise.
* record-btrace.c: Likewise.
* rust-exp.y: Likewise.
* solib-target.c: Likewise.
* stap-probe.c: Likewise.
* target-descriptions.c: Likewise.
* target-memory.c: Likewise.
* target.h: Likewise.
* varobj.c: Likewise.
* varobj.h: Likewise.
* xml-support.h: Likewise.

gdb/gdbserver/ChangeLog:

* Makefile.in: Remove references to vec.c.

Change-Id: I0c91d7170bf1b5e992a387fcd9fe4f2abe343bb5

4 years agogdb: Remove use of VEC from dwarf2read.c
Andrew Burgess [Wed, 2 Oct 2019 14:38:51 +0000 (15:38 +0100)] 
gdb: Remove use of VEC from dwarf2read.c

This removes a use of VEC from GDB, from dwarf2read.c.  This removal
is not very clean, and would probably benefit from additional
refactoring in the future.

The problem here is that the VEC is contained within struct
dwarf2_per_cu_data, which is treated as POD in dwarf2read.c.  As such
it is actually a VEC pointer.  When converting this to a std::vector
in an ideal world we would not use a std::vector pointer, and use the
std::vector directly.  Sadly, to do that would require some rewriting
in dwarf2read.c - my concern would be introducing bugs during this
rewrite.

If we move to a std::vector pointer then we need to take care to
handle the case where the pointer is null.  The old VEC library would
handle null for us, making the VEC interface very clean.  With
std::vector we need to handle the null pointer case ourselves.

The achieve this then I've added a small number of function that wrap
up access to the std::vector, hopefully hiding the null pointer
management.

The final ugliness with this conversion is that, ideally, when
wrapping a data member behind an interface I would make the data
member private, however, treating the structure as POD once again
prevents this, so we are left with the data member being public, but
access (ideally) being through the published interface functions.

There should be no user visible changes after this commit.

gdb/ChangeLog:

* gdb/dwarf2read.c (dwarf2_per_objfile::~dwarf2_per_objfile):
Update for new std::vector based implementation.
(process_psymtab_comp_unit_reader): Likewise.
(scan_partial_symbols): Likewise.
(recursively_compute_inclusions): Likewise.
(compute_compunit_symtab_includes): Likewise.
(process_imported_unit_die): Likewise.
(queue_and_load_dwo_tu): Likewise.
(follow_die_sig_1): Likewise.
* gdb/dwarf2read.h: Remove DEF_VEC_P.
(typedef dwarf2_per_cu_ptr): Remove.
(struct dwarf2_per_cu_data) <imported_symtabs_empty>: New
function.
(struct dwarf2_per_cu_data) <imported_symtabs_push>: New function.
(struct dwarf2_per_cu_data) <imported_symtabs_size>: New function.
(struct dwarf2_per_cu_data) <imported_symtabs_free>: New function.
(struct dwarf2_per_cu_data) <imported_symtabs>: Change to
std::vector.

Change-Id: Id0f4bda977c9dd83b0ba3d7fb42f7e5e2b6869c8

4 years agoUse %x when printing the TID
Tom Tromey [Fri, 11 Oct 2019 16:34:10 +0000 (10:34 -0600)] 
Use %x when printing the TID

One spot in windows-nat.c uses %ld to print the TID, but all other
spots use %x, as does the infrun logging.  This makes it unnecessarily
hard to tell which other log messages correspond to this one.  This
patch changes the one outlier to use %x.

gdb/ChangeLog
2019-10-15  Tom Tromey  <tromey@adacore.com>

* windows-nat.c (windows_nat_target::resume): Use %x when logging
TID.

Change-Id: Ic66efeb8a7ec08e7fb007320318f51acbf976734

4 years agoRename pid -> tid in windows-nat.c
Tom Tromey [Thu, 10 Oct 2019 17:33:16 +0000 (11:33 -0600)] 
Rename pid -> tid in windows-nat.c

A couple of spots in windows-nat.c used the name "pid" to refer to the
thread ID.  I found this confusing, so this patch changes the names.

gdb/ChangeLog
2019-10-15  Tom Tromey  <tromey@adacore.com>

* windows-nat.c (windows_nat_target::fetch_registers)
(windows_nat_target::store_registers): Rename "pid" to "tid".

Change-Id: Ia1a447e8da822d01ad94a5ca3760342bbdc0e66c

4 years agoChange gcc_target_options to return std::string
Tom Tromey [Tue, 15 Oct 2019 16:57:40 +0000 (10:57 -0600)] 
Change gcc_target_options to return std::string

This patch was inspired by a recent review that recommended using
std::string in a new implementation of the gcc_target_options gdbarch
function.  It changes this function to return std::string rather than
an ordinary xmalloc'd string.

I believe this caught a latent memory leak in compile.c:get_args.

Tested on x86-64 Fedora 29.

gdb/ChangeLog
2019-10-15  Tom Tromey  <tromey@adacore.com>

* gdbarch.h, gdbarch.c: Rebuild.
* gdbarch.sh (gcc_target_options): Change return type to
std::string.
* compile/compile.c (get_args): Update.
* nios2-tdep.c (nios2_gcc_target_options): Return std::string.
* arm-linux-tdep.c (arm_linux_gcc_target_options): Return
std::string.
* aarch64-linux-tdep.c (aarch64_linux_gcc_target_options): Return
std::string.
* arch-utils.c (default_gcc_target_options): Return std::string.
* arch-utils.h (default_gcc_target_options): Return std::string.
* s390-tdep.c (s390_gcc_target_options): Return std::string.

Change-Id: I51f61703426a323089e646da8f22320a2cafbc1f

4 years agoMake tui-winsource not use breakpoint_chain
Christian Biesinger [Mon, 7 Oct 2019 22:38:51 +0000 (17:38 -0500)] 
Make tui-winsource not use breakpoint_chain

That's an internal variable of breakpoint.c. Insted, use
iterate_over_breakpoints to update the breakpoint list.

gdb/ChangeLog:

2019-10-15  Christian Biesinger  <cbiesinger@google.com>

* breakpoint.c (breakpoint_chain): Make static.
* tui/tui-winsource.c: Call iterate_over_breakpoints instead
of accessing breakpoint_chain.

Change-Id: Ic259b2c3a4c1f5a47f34cfd7fccbdcf274417429

4 years agoChange iterate_over_breakpoints to take a function_view
Christian Biesinger [Wed, 9 Oct 2019 18:50:20 +0000 (13:50 -0500)] 
Change iterate_over_breakpoints to take a function_view

This allows callers to pass in capturing lambdas.  Also changes the return
type to bool.

gdb/ChangeLog:

2019-10-15  Christian Biesinger  <cbiesinger@google.com>

* breakpoint.c (iterate_over_breakpoints): Change function pointer
to a gdb::function_view and return value to bool.
* breakpoint.h (iterate_over_breakpoints): Likewise.
* dummy-frame.c (pop_dummy_frame_bpt): Update.
(pop_dummy_frame): Update.
* guile/scm-breakpoint.c (bpscm_build_bp_list): Update.
(gdbscm_breakpoints): Update.
* python/py-breakpoint.c (build_bp_list): Update.
(gdbpy_breakpoints): Update.
* python/py-finishbreakpoint.c (bpfinishpy_detect_out_scope_cb):
Update.
(bpfinishpy_handle_stop): Update.
(bpfinishpy_handle_exit): Update.
* solib-svr4.c (svr4_update_solib_event_breakpoint): Update.
(svr4_update_solib_event_breakpoints): Update.

Change-Id: Ia9de4deecae562a70a40f5cd49f5a74d64570251

4 years agom68hc1x: better arg checking for reloc_warning
Alan Modra [Tue, 15 Oct 2019 09:03:17 +0000 (19:33 +1030)] 
m68hc1x: better arg checking for reloc_warning

* elf32-m68hc1x.c (reloc_warning): Add printf attribute.
(elf32_m68hc11_relocate_section): Don't use a variable for format
strings.  Delete some unnecessary xgettext:c-format comments.

4 years agos390: Fix infcalls passing a single-field struct with static members
Andreas Arnez [Tue, 15 Oct 2019 12:20:14 +0000 (14:20 +0200)] 
s390: Fix infcalls passing a single-field struct with static members

The infcall-nested-structs test case yields 36 FAILs on s390x because GCC
and GDB disagree on how to pass a C++ struct like this as an argument to a
function:

  struct s { float x; static float y; };

For the purpose of argument passing, GCC ignores static fields, while GDB
does not.  Thus GCC passes the argument in a floating-point register and
GDB passes it via memory.

Fix this by explicitly ignoring static fields when detecting single-field
structs.

gdb/ChangeLog:

* s390-tdep.c (s390_effective_inner_type): Ignore static fields
when unwrapping single-field structs.

4 years agoremove more xmalloc in bfd
Alan Modra [Tue, 15 Oct 2019 05:27:35 +0000 (15:57 +1030)] 
remove more xmalloc in bfd

Also fixes m68hc1x printf arguments which would have bombed when
compiling on a 32-bit host with --enable-64-bit-bfd.

bfd/
PR 24955
* elf32-arm.c (set_cmse_veneer_addr_from_implib): Use bfd_malloc
rather than xmalloc.
* elf32-m68hc1x.c (reloc_warning): New function.
(elf32_m68hc11_relocate_section): Use it here.  Cast bfd_vma values
corresponding to %lx in format strings.
* elf32-nds32.c (nds32_insertion_sort): Use a stack temporary.
gas/
* config/tc-nds32.c (nds32_set_section_relocs): Use relocs and n
parameters rather than equivalent sec->orelocation and
sec->reloc_count.  Don't sort for n <= 1.  Tidy.

4 years agoPR25100, Compile fails in elf64-ppc.c because of single equal sign instead of double...
Alan Modra [Tue, 15 Oct 2019 01:28:11 +0000 (11:58 +1030)] 
PR25100, Compile fails in elf64-ppc.c because of single equal sign instead of double equal for comparison

PR 25100
* elf64-ppc.c (sfpr_define): Delete dead code that triggered a warning.

4 years agoSimplify power of two test
Alan Modra [Mon, 14 Oct 2019 09:59:12 +0000 (20:29 +1030)] 
Simplify power of two test

* bfd.c (bfd_check_compression_header): Check for powers of two
with x == (x & -x).

4 years ago[gdb/testsuite] Fix gdb.ada/mi_task_arg.exp
Tom de Vries [Tue, 15 Oct 2019 00:21:37 +0000 (02:21 +0200)] 
[gdb/testsuite] Fix gdb.ada/mi_task_arg.exp

On openSUSE Leap 15.1, we have:
...
FAIL: gdb.ada/mi_task_arg.exp: -stack-list-arguments 1 (unexpected output)
...

The problem is that the stack-list-arguments command prints a frame argument
'self_id' for function system.tasking.stages.task_wrapper:
...
frame={level="2",args=[{name="self_id",value="0x12345678"}]
...
where none (args=[]) is expected.

The frame argument is in fact correct.  The FAIL does not show for say, fedora
30, because there the executable uses the system.tasking.stages.task_wrapper
from /lib64/libgnarl-9.so.  Adding "additional_flags=-bargs
additional_flags=-shared additional_flags=-largs" to the flags argument of
gdb_compile_ada gives us the same PASS, but installing libada7-debuginfo gets
us the same FAIL again.

Fix the FAIL by allowing the 'self_id' argument.

Tested on x86_64-linux.

Change-Id: I5aee5856fa6aeb0cc78aa4fe69deecba5b00b77a

4 years agoAutomatic date update in version.in
GDB Administrator [Tue, 15 Oct 2019 00:00:20 +0000 (00:00 +0000)] 
Automatic date update in version.in

4 years agogdb.mi/list-thread-groups-available.exp: read entries one by one instead of increasin...
Simon Marchi [Mon, 14 Oct 2019 04:37:30 +0000 (00:37 -0400)] 
gdb.mi/list-thread-groups-available.exp: read entries one by one instead of increasing timeout

Commit 580f1034 ("Increase timeout in
gdb.mi/list-thread-groups-available.exp") changed
gdb.mi/list-thread-groups-available.exp to significantly increase the
timeout, which was necessary for when running with make check-read1.

Pedro suggested a better alternative, which is to use gdb_test_multiple
and consume one entry at a time.  This patch does that.

gdb/testsuite/ChangeLog:

* gdb.mi/list-thread-groups-available.exp: Read entries one by
one instead of increasing timeout.

Change-Id: I51b689458503240f24e401f054e6583d9172ebdf

4 years agogdb: remove unused includes from dwarf2read.c
Simon Marchi [Sun, 13 Oct 2019 04:46:13 +0000 (00:46 -0400)] 
gdb: remove unused includes from dwarf2read.c

include-what-you-use says:

../../../src/binutils-gdb/gdb/dwarf2read.c should remove these lines:
- #include <ctype.h>  // lines 67-67
- #include <sys/stat.h>  // lines 59-59
- #include <sys/types.h>  // lines 83-83
- #include <cmath>  // lines 88-88
- #include <forward_list>  // lines 90-90
- #include <set>  // lines 89-89
- #include <unordered_set>  // lines 85-85
- #include "completer.h"  // lines 60-60
- #include "expression.h"  // lines 44-44
- #include "gdbsupport/byte-vector.h"  // lines 78-78
- #include "gdbsupport/filestuff.h"  // lines 71-71
- #include "gdbsupport/gdb_unlinker.h"  // lines 74-74

After a quick glance, that makes sense, so this patch removes them.

gdb/ChangeLog:

* dwarf2read.c: Remove includes.

Change-Id: I13cfcb2f1d747144fddba7f66b329630b79dae90

4 years agoqsort: ldctor.c CONSTRUCTORS
Alan Modra [Mon, 14 Oct 2019 03:27:01 +0000 (13:57 +1030)] 
qsort: ldctor.c CONSTRUCTORS

ctor_cmp had an ineffective comparison of addresses in an attempt to
ensure sort stability.  Comparing the addresses passed to the
comparison function can't work since those addresses may be from an
array that is already perturbed by qsort.

* ldctor.h (struct set_element): Make next field a union, adding
idx field.
* ldctor.c (ctor_cmp): Dereference pointer and lose unnecessary
const.  Replace final sort on pointer value with final sort on idx.
(ldctor_add_set_entry): Adjust next field access.
(ldctor_build_sets): Likewise.  Set u.idx field for sort.

4 years agoqsort: pe-dll.c reloc sorting
Alan Modra [Mon, 14 Oct 2019 03:25:32 +0000 (13:55 +1030)] 
qsort: pe-dll.c reloc sorting

* pe-dll.c (reloc_data_type): Add idx field.
(reloc_sort): Perform final sort by idx.
(generate_reloc): Set idx.

4 years agoqsort: objcopy.c section sort
Alan Modra [Mon, 14 Oct 2019 03:24:09 +0000 (13:54 +1030)] 
qsort: objcopy.c section sort

* objcopy.c (compare_section_lma): Correct comment.  Dereference
section pointer earlier and lose unnecessary const.  Style fixes.
Add final sort by id.

4 years agoqsort: syms.c stab sorting
Alan Modra [Mon, 14 Oct 2019 03:23:40 +0000 (13:53 +1030)] 
qsort: syms.c stab sorting

* syms.c (struct indexentry): Add idx field.
(cmpindexentry): Final sort on idx.
(_bfd_stab_section_find_nearest_line): Set idx.

4 years agoqsort: dwarf2.c
Alan Modra [Mon, 14 Oct 2019 03:22:32 +0000 (13:52 +1030)] 
qsort: dwarf2.c

This patch ensures qsort stability in line and function sorting done
in dwarf2.c.  For the line sequences we make use of an existing field
that isn't used until later, as a monotonic counter for the qsort.

* dwarf2.c (struct lookup_funcinfo): Add idx field.
(compare_lookup_funcinfos): Perform final sort on idx.
(build_lookup_funcinfo_table): Set idx.
(compare_sequences): Perform final sort on num_lines.
(build_line_info_table): Set num_lines and line_info_lookup earlier.
(sort_line_sequences): Set num_lines for sort.

4 years agoqsort: elf_link_add_object_symbols weak aliases
Alan Modra [Mon, 14 Oct 2019 03:21:19 +0000 (13:51 +1030)] 
qsort: elf_link_add_object_symbols weak aliases

This particular sort almost certainly does not need to be stable for
the ELF linker to work correctly.  However it is conceivable that an
unstable sort could affect linker output, and thus different output be
seen with differing qsort implementations.  The argument goes like
this:  Given more than one strong alias symbol of equal section, value,
and size, the aliases will compare equal by elf_sort_symbol and thus
which one is chosen as the "real" symbol to be made dynamic depends on
qsort.  Why would anyone define two symbols at the same address?
Well, sometimes the fact that there are more than one strong alias
symbol is due to linker script symbols like __bss_start being made
dynamic.  This will match the first symbol defined in .bss if it
doesn't have correct size, and forgetting to properly set size and
type of symbols isn't as rare as it should be.

This patch adds some more heuristics to elf_sort_symbol.

* elflink.c (elf_sort_symbol): Sort on type and name as well.
(elf_link_add_object_symbols): Style fix.

4 years agoqsort: elf_sort_sections use of target_index
Alan Modra [Mon, 14 Oct 2019 03:20:48 +0000 (13:50 +1030)] 
qsort: elf_sort_sections use of target_index

elf_sort_sections tried to ensure a stable qsort by using target_index
as the final comparison, but target_index hasn't been set by anything
at the time elf_sort_sections was run.  This patch arrange to have
target_index set.

* elf.c (_bfd_elf_map_sections_to_segments): Init target_index
for sections about to be sorted.
(assign_file_positions_for_load_sections): Likewise.
(elf_sort_sections): Don't bother optimising both TOEND case.
* elflink.c (bfd_elf_final_link): Reset target_index.

4 years agoqsort: SHF_LINK_ORDER section sort
Alan Modra [Mon, 14 Oct 2019 03:19:34 +0000 (13:49 +1030)] 
qsort: SHF_LINK_ORDER section sort

The linker SHF_LINK_ORDER section sorting had a number of defects.
1) The ordering was by VMA, which won't work with overlays.  LMA is
   better.
2) Zero size sections can result in two sections at the same LMA/VMA.
   When only one of the two sections at the same LMA is zero size,
   that one must be first.
3) Warnings given by elf_get_linked_section_vma won't ever be emitted
   since elf_object_p warns and excludes objects with zero sh_link on
   a SHF_LINK_ORDER section.
4) Section offset was adjusted down rather than up by section
   alignment, possibly creating overlapping sections.
5) Finding the linked section did so the hard way, rather than simply
   using elf_linked_to_section.

* elflink.c (elf_get_linked_section_vma): Delete.
(compare_link_order): Use elf_linked_to_section and sort by lma,
size, and id.
(elf_fixup_link_order): Use size_t variables where appropriate.
Make use of elf_linked_to_section.  Formatting.  Properly align
sections.

4 years agoqsort issues
Alan Modra [Mon, 14 Oct 2019 03:05:21 +0000 (13:35 +1030)] 
qsort issues

qsort isn't guaranteed to be a stable sort, that is, elements
comparing equal according to the comparison function may be reordered
relative to their original ordering.  Of course sometimes you may not
care, but even in those cases it is good to force some ordering
(ie. not have the comparison function return 0) so that linker output
is reproducible over different libc qsort implementations.

One way to make qsort stable (which the glibc manual incorrectly says
is the only way) is to augment the elements being sorted with a
monotonic counter of some kind, and use that counter as the final
arbiter of ordering in the comparison function.

Another way is to set up an array of pointers into the array of
elements, first pointer to first element, second pointer to second
element and so so, and sort the pointer array rather than the element
array.  Final arbiter in the comparison function then is the pointer
difference.  This works well with, for example, the symbol pointers
returned by _bfd_elf_canonicalize_symtab which point into a symbol
array.

This patch fixes a few places where sorting by symbol pointers is
appropriate, and adds comments where qsort stability is a non-issue.

* elf-strtab.c (strrevcmp): Comment.
* merge.c (strrevcmp): Likewise.
* elf64-ppc.c (compare_symbols): Correct final pointer comparison.
Comment on why comparing pointers ensures a stable sort.
* elflink.c (struct elf_symbol): Add void* to union.
(elf_sort_elf_symbol): Ensure a stable sort with pointer comparison.
(elf_sym_name_compare): Likewise.
(bfd_elf_match_symbols_in_sections): Style fix.
(elf_link_sort_cmp1): Comment.

4 years agoPR24955, libbfd terminating program on out of memory (part2)
Alan Modra [Mon, 14 Oct 2019 03:04:30 +0000 (13:34 +1030)] 
PR24955, libbfd terminating program on out of memory (part2)

PR 24955
* elflink.c (elf_output_implib): Don't use xmalloc.  Don't ignore
return value of bfd_alloc2.
* peXXigen.c (_bfd_XXi_write_codeview_record): Don't use xmalloc.
* pef.c (bfd_pef_print_symbol): Likewise.  Don't ignore return
value of bfd_get_section_contents.
* som.c (som_write_space_strings): Don't use xmalloc.
(som_write_symbol_strings): Likewise.

4 years agoAutomatic date update in version.in
GDB Administrator [Mon, 14 Oct 2019 00:00:24 +0000 (00:00 +0000)] 
Automatic date update in version.in

4 years agogdb: Silence -Wformat-nonliteral warning with clang
Simon Marchi [Fri, 11 Oct 2019 19:36:49 +0000 (15:36 -0400)] 
gdb: Silence -Wformat-nonliteral warning with clang

We get this warning when building with clang:

      CXX    ui-out.o
    /home/smarchi/src/binutils-gdb/gdb/ui-out.c:590:22: error: format string is not a string literal [-Werror,-Wformat-nonliteral]
      do_message (style, format, args);
                         ^~~~~~

This can be considered a legitimate warning, as call_do_message's format
parameter is not marked as a format string.  Therefore, we should
normally mark the call_do_message method with the `format` attribute.
However, doing so just moves (and multiplies) the problem, as all the
uses of call_do_message in the vmessage method now warn.  If we wanted
to continue on that path, we should silence the warning for each of
them, as a way of telling the compiler "it's ok, we know what we are
doing".

But since call_do_message is really just vmessage's little helper, it's
simpler to just silence the warning at that single point.

gdb/ChangeLog:

* ui-out.c (ui_out::call_do_message): Silence
-Wformat-nonliteral warning.

Change-Id: I58ad41793448f38835c5d6ba7b9e5c4dd8df260f

4 years agoMention PR c++/20020 in ChangeLog entry
Tom de Vries [Sun, 13 Oct 2019 13:09:09 +0000 (15:09 +0200)] 
Mention PR c++/20020 in ChangeLog entry

[ Port of gdb-8.3-branch commit 59047affb0a "Update ChangeLog entry of commit
98c90f8028 and mention PR c++/20020". ]

4 years agoMention PR testsuite/25016 in ChangeLog entry
Tom de Vries [Sun, 13 Oct 2019 13:09:09 +0000 (15:09 +0200)] 
Mention PR testsuite/25016 in ChangeLog entry

[ Port of gdb-8.3-branch commit 3d80b2e754f "Update ChangeLog entry of commit
3b752ac2e6 and mention PR testsuite/25016". ]

4 years agoMention PR breakpoints/25011 in ChangeLog entry
Tom de Vries [Sun, 13 Oct 2019 13:09:09 +0000 (15:09 +0200)] 
Mention PR breakpoints/25011 in ChangeLog entry

[ Port of gdb-8.3-branch commit 88f07f28d5b "Update ChangeLog entry of commit
7e38ddcb2e and mention PR breakpoints/25011". ]

4 years agoMention PR gdb/25010 in ChangeLog entry
Tom de Vries [Sun, 13 Oct 2019 13:09:09 +0000 (15:09 +0200)] 
Mention PR gdb/25010 in ChangeLog entry

[ Port of gdb-8.3-branch commit 5ca0b868fa7 "Update ChangeLog entry of commit
8ac39635f6 and mention PR gdb/25010". ]

4 years agoUpdate the README-how-to-make-a-release file with a note to reset the development...
Nick Clifton [Sun, 13 Oct 2019 12:33:27 +0000 (13:33 +0100)] 
Update the README-how-to-make-a-release file with a note to reset the development flag back to true after making a point release.  Aldo fix a typo in the ld/NEWS file.

binutils* README-how-to-make-a-release: Add a note to reset the
development flag back to true after making a point release.

ld * NEWS: Delete superflous "Changes in 2.33" comment.

4 years agogdb: small cleanup in breakpoint.c's includes
Simon Marchi [Sun, 13 Oct 2019 03:46:15 +0000 (23:46 -0400)] 
gdb: small cleanup in breakpoint.c's includes

In an attempt to reduce the number of files re-build when some headers
are touched, I ran include-what-you-use with breakpoint.c as a guinea
pig.  It revealed a few files that were unnecessary to include, which
this patch removes.

breakpoint.c uses tilde_expand from readline, hence the necessity to
include tilde.h.  AFAIK, it's fine to include just that, and not the
whole readline headers.

include-what-you-use also reported many header files that should be
included but aren't, I suppose that breakpoint.c currently includes them
indirectly.  For now I'll pretend I didn't see that :).

gdb/ChangeLog:

* breakpoint.c: Remove some includes: continuations.h, skip.h,
mi/mi-main.h, readline/readline.h, readline/history.h.  Add
include: readline/tilde.h.

-#include "skip.h"
 #include "ax-gdb.h"
 #include "dummy-frame.h"
 #include "interps.h"
@@ -69,11 +67,9 @@
 #include "thread-fsm.h"
 #include "tid-parse.h"
 #include "cli/cli-style.h"
-#include "mi/mi-main.h"

 /* readline include files */
-#include "readline/readline.h"
-#include "readline/history.h"
+#include "readline/tilde.h"

 /* readline defines this.  */
 #undef savestring

Change-Id: I88bfe9071f2f973fd84caaf04b95c33a4dfb33de

4 years ago[gdb/testsuite] Add KFAIL for missing support of reverse-debugging xsave
Tom de Vries [Sun, 13 Oct 2019 00:40:57 +0000 (02:40 +0200)] 
[gdb/testsuite] Add KFAIL for missing support of reverse-debugging xsave

Normally the gdb.reverse/*.exp test-cases pass on my system (apart from the
record/23188 KFAIL for gdb.reverse/step-precsave.exp).  But when specifying
GLIBC_TUNABLES=glibc.tune.hwcaps=-XSAVEC_Usable to force glibc to use
_dl_runtime_resolve_xsave instead of _dl_runtime_resolve_xsavec, we run into
1054 FAILs like this:
...
(gdb) PASS: gdb.reverse/sigall-reverse.exp: b gen_HUP
continue^M
Continuing.^M
Process record does not support instruction 0xfae64 at address \
  0x7ffff7ded958.^M
Process record: failed to record execution log.^M
^M
Program stopped.^M
0x00007ffff7ded958 in _dl_runtime_resolve_xsave () from \
  /lib64/ld-linux-x86-64.so.2^M
(gdb) FAIL: gdb.reverse/sigall-reverse.exp: get signal ABRT
...

The problem is that the xsave instruction is not supported in
reverse-debugging (PR record/25038).

Add KFAILs for this PR.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-13  Tom de Vries  <tdevries@suse.de>

PR record/25038
* gdb.reverse/sigall-precsave.exp: Add PR record/25038 KFAIL.
* gdb.reverse/sigall-reverse.exp: Same.
* gdb.reverse/solib-precsave.exp: Same.
* gdb.reverse/solib-reverse.exp: Same.
* gdb.reverse/step-precsave.exp: Same.
* gdb.reverse/until-precsave.exp: Same.
* gdb.reverse/until-reverse.exp: Same.
* lib/gdb.exp (gdb_continue_to_breakpoint): Same.

4 years agoAutomatic date update in version.in
GDB Administrator [Sun, 13 Oct 2019 00:01:15 +0000 (00:01 +0000)] 
Automatic date update in version.in

4 years agoRemove unnecessary declaration of trace_regblock_size
Christian Biesinger [Fri, 11 Oct 2019 03:57:36 +0000 (22:57 -0500)] 
Remove unnecessary declaration of trace_regblock_size

This variable is declared in tracepoint.h, which is already included
by remote.c.

gdb/ChangeLog:

2019-10-12  Christian Biesinger  <cbiesinger@google.com>

* remote.c (remote_target::get_trace_status): Remove declaration of
trace_regblock_size.

4 years agoMove declaration of max_user_call_depth to header
Christian Biesinger [Thu, 10 Oct 2019 04:27:33 +0000 (23:27 -0500)] 
Move declaration of max_user_call_depth to header

Also removes an unnecessary declaration of cmdlist in cli-cmds.c.
I don't understand why it is there, the definition of cmdlist is
at the top of the same file.

gdb/ChangeLog:

2019-10-12  Christian Biesinger  <cbiesinger@google.com>

* cli/cli-cmds.c (max_user_call_depth): Move comment to header.
(show_user): Remove declaration of cmdlist.
* cli/cli-cmds.h (max_user_call_depth): Declare.
* cli/cli-script.c (execute_user_command): Remove declaration
of max_user_call_depth.

4 years agoTweak the 'how to make a release' document
Nick Clifton [Sat, 12 Oct 2019 15:04:20 +0000 (16:04 +0100)] 
Tweak the 'how to make a release' document

4 years agoAutomatic date update in version.in
GDB Administrator [Sat, 12 Oct 2019 00:00:24 +0000 (00:00 +0000)] 
Automatic date update in version.in

4 years agoImprove comments in print-utils.h.
Jim Wilson [Fri, 11 Oct 2019 18:28:35 +0000 (11:28 -0700)] 
Improve comments in print-utils.h.

Since I had to look at these function comments to fix the RISC-V ARI warnings,
I noticed that they make no sense.  The pulongest and plongest comments are
swapped.  phex is missing a comment.  And phex_nz doesn't mention how it is
different from phex.

* gdbsupport/print-utils.h (pulongest): Fix comment.
(plongest): Likewise.
(phex): Add missing comment, mention leading zeros.
(phex_nz): Add mention of no leading zeros to comment.

4 years agoRISC-V: Fix two ARI warnings.
Jim Wilson [Fri, 11 Oct 2019 18:26:29 +0000 (11:26 -0700)] 
RISC-V: Fix two ARI warnings.

> gdb/riscv-tdep.c:1657: code: %ll: Do not use printf(%ll), instead use printf(%s,phex()) to dump a 'long long' value
gdb/riscv-tdep.c:1657:                  "Writing %lld-byte nop instruction to %s: %s\n",
> gdb/riscv-tdep.c:1658: code: long long: Do not use 'long long', instead use LONGEST
gdb/riscv-tdep.c:1658:                  ((unsigned long long) sizeof (nop_insn)),

fprintf_unfiltered doesn't support z (or j for that matter), and fixing that
is a larger patch than I'd like to write, so this does basically what the
ARI warnings recommends.  We don't need the cast as there is a prototype for
plongest.

* riscv-tdep.c (riscv_push_dummy_code): Change %lld to %s and use
plongest instead of unsigned long long cast.

4 years agobfd/dwarf2.c: fix assertion failure in comp_unit_hash_info
Max Filippov [Thu, 10 Oct 2019 23:37:25 +0000 (16:37 -0700)] 
bfd/dwarf2.c: fix assertion failure in comp_unit_hash_info

stash_maybe_enable_info_hash_tables sets
stash->info_hash_status = STASH_INFO_HASH_ON;
regardless of the result of stash_maybe_update_info_hash_tables call. In
case it fails this results in repeated invocation of comp_unit_hash_info
for the same comp unit and assertion failure in this function.

Only set stash->info_hash_status = STASH_INFO_HASH_ON; when
stash_maybe_update_info_hash_tables is successful.

bfd/
2019-10-11  Max Filippov  <jcmvbkbc@gmail.com>

* dwarf2.c (stash_maybe_enable_info_hash_tables): Only set
stash->info_hash_status = STASH_INFO_HASH_ON when
stash_maybe_update_info_hash_tables succeeds.

4 years agoUpdated traditional Chinese translation for the binutils/ subdirectory
Nick Clifton [Fri, 11 Oct 2019 10:58:22 +0000 (11:58 +0100)] 
Updated traditional Chinese translation for the binutils/ subdirectory

4 years agoAutomatic date update in version.in
GDB Administrator [Fri, 11 Oct 2019 00:00:39 +0000 (00:00 +0000)] 
Automatic date update in version.in

4 years agoInclude gdbtk.h to avoid declarations
Christian Biesinger [Thu, 10 Oct 2019 17:42:41 +0000 (12:42 -0500)] 
Include gdbtk.h to avoid declarations

Once https://sourceware.org/ml/insight/2019-q4/msg00000.html lands,
we can just include gdbtk.h to get the declarations for
external_editor_command and gdbtk_test, instead of having to
declare them here in main.c.

gdb/ChangeLog:

2019-10-07  Christian Biesinger  <cbiesinger@google.com>

* main.c (captured_main_1): Include gdbtk.h and remove declarations
for external_editor_command and gdbtk_test.

4 years agoMove declaration of varobjdebug to header
Christian Biesinger [Thu, 10 Oct 2019 04:06:14 +0000 (23:06 -0500)] 
Move declaration of varobjdebug to header

gdb/ChangeLog:

2019-10-10  Christian Biesinger  <cbiesinger@google.com>

* mi/mi-cmd-var.c (varobjdebug): Remove declaration.
* varobj.c (varobjdebug): Move comment to...
* varobj.h (varobjdebug): ...here, and declare.

4 years agogdb/testsuite: Fix typos in infcall-nested-structs.c
Andreas Arnez [Thu, 10 Oct 2019 10:22:49 +0000 (12:22 +0200)] 
gdb/testsuite: Fix typos in infcall-nested-structs.c

Some of the comparison functions in infcall-nested-structs.c contain
redundant comparisons like a.<some_field> == a.<some_field> instead of
a.<some_field> == b.<some_field>.  They were introduced with this commit:

  36eb4c5f9bbe6 - "infcall-nested-structs: Test up to five fields"

Fix the redundant comparisons.

gdb/testsuite/ChangeLog:

* gdb.base/infcall-nested-structs.c (cmp_struct_02_01)
(cmp_struct_02_02, cmp_struct_04_01, cmp_struct_04_02)
(cmp_struct_05_01, cmp_struct_static_02_01)
(cmp_struct_static_04_01, cmp_struct_static_06_01): Fix redundant
comparisons.

4 years ago[gdb/testsuite] Fix ada tests with -fPIE/-pie
Tom de Vries [Thu, 10 Oct 2019 09:51:34 +0000 (11:51 +0200)] 
[gdb/testsuite] Fix ada tests with -fPIE/-pie

When running the gdb testsuite with target board unix/-fPIE/-pie, the
resulting ada executables are not PIE executables, because gnatmake doesn't
recognize -pie, and consequently doesn't pass it to gnatlink.

Fix this by replacing "-pie" with "-largs -pie -margs" in
target_compile_ada_from_dir, and doing the same for -no-pie.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-10  Tom de Vries  <tdevries@suse.de>

PR testsuite/24888
* lib/ada.exp (target_compile_ada_from_dir): Route -pie/-no-pie to
gnatlink.

4 years agoAutomatic date update in version.in
GDB Administrator [Thu, 10 Oct 2019 00:00:24 +0000 (00:00 +0000)] 
Automatic date update in version.in

4 years agoDon't call erase_data_content from tui_data_window::show_registers
Tom Tromey [Tue, 1 Oct 2019 23:42:17 +0000 (17:42 -0600)] 
Don't call erase_data_content from tui_data_window::show_registers

tui_data_window::show_registers currently calls erase_data_content.
However, I think it's better to have fewer calls to this (ideally just
one would suffice).  This refactors that function to remove this call.

gdb/ChangeLog
2019-10-09  Tom Tromey  <tom@tromey.com>

* tui/tui-regs.c (tui_data_window::show_registers): Don't call
erase_data_content.

4 years agoMake TUI window handle a unique_ptr
Tom Tromey [Tue, 1 Oct 2019 23:29:49 +0000 (17:29 -0600)] 
Make TUI window handle a unique_ptr

This changes tui_gen_win_info::handle to be a specialization of
unique_ptr.  This is perhaps mildly uglier in some spots, due to the
proliferation of "get"; but on the other hand it cleans up some manual
management and it allows for the removal of tui_delete_win.

gdb/ChangeLog
2019-10-09  Tom Tromey  <tom@tromey.com>

* tui/tui-wingeneral.h (tui_delete_win): Don't declare.
* tui/tui-stack.c (tui_locator_window::rerender): Update.
* tui/tui-command.c (tui_cmd_window::resize)
(tui_refresh_cmd_win): Update.
* tui/tui-win.c (tui_resize_all, tui_set_focus_command): Update.
* tui/tui.c (tui_rl_other_window, tui_enable): Update.
* tui/tui-data.c (~tui_gen_win_info): Remove.
* tui/tui-layout.c (tui_gen_win_info::resize): Update.
* tui/tui-io.c (update_cmdwin_start_line, tui_putc, tui_puts)
(tui_redisplay_readline, tui_mld_flush)
(tui_mld_erase_entire_line, tui_mld_getc, tui_getc): Update.
* tui/tui-regs.c (tui_data_window::delete_data_content_windows)
(tui_data_window::erase_data_content)
(tui_data_item_window::rerender)
(tui_data_item_window::refresh_window): Update.
* tui/tui-wingeneral.c (tui_gen_win_info::refresh_window)
(box_win, tui_gen_win_info::make_window)
(tui_gen_win_info::make_visible): Update.
(tui_delete_win): Remove.
* tui/tui-winsource.c
(tui_source_window_base::do_erase_source_content): Update.
(tui_show_source_line, tui_source_window_base::update_tab_width)
(tui_source_window_base::update_exec_info): Update.
* tui/tui-data.h (struct curses_deleter): New.
(struct tui_gen_win_info) <handle>: Now a unique_ptr.
(struct tui_gen_win_info) <~tui_gen_win_info>: Define.

4 years agoRemove declaration from tui-wingeneral.h
Tom Tromey [Tue, 1 Oct 2019 23:16:41 +0000 (17:16 -0600)] 
Remove declaration from tui-wingeneral.h

tui-wingeneral.h has an unused forward declaration.  This removes it.

gdb/ChangeLog
2019-10-09  Tom Tromey  <tom@tromey.com>

* tui/tui-wingeneral.h (struct tui_gen_win_info): Don't declare.

4 years agoRemove tui_win_is_auxiliary
Tom Tromey [Tue, 1 Oct 2019 23:14:14 +0000 (17:14 -0600)] 
Remove tui_win_is_auxiliary

tui_win_is_auxiliary is not used, so remove it.

gdb/ChangeLog
2019-10-09  Tom Tromey  <tom@tromey.com>

* tui/tui-data.c (tui_win_is_auxiliary): Remove.
* tui/tui-data.h (tui_win_is_auxiliary): Don't declare.

4 years agoRemove tui_default_win_viewport_height
Tom Tromey [Tue, 1 Oct 2019 23:03:54 +0000 (17:03 -0600)] 
Remove tui_default_win_viewport_height

tui_default_win_viewport_height was only called from a single spot,
for a single type of window.  This patch removes the function and
moves the logic into the sole caller.

gdb/ChangeLog
2019-10-09  Tom Tromey  <tom@tromey.com>

* tui/tui-disasm.c (tui_get_low_disassembly_address): Compute
window height directly.
* tui/tui-layout.h (tui_default_win_viewport_height): Don't
declare.
* tui/tui-layout.c (tui_default_win_height): Remove.
(tui_default_win_viewport_height): Remove.

4 years agoRemove two TUI comments
Tom Tromey [Tue, 1 Oct 2019 22:58:26 +0000 (16:58 -0600)] 
Remove two TUI comments

This removes two comments from tui.h.  These were not useful.

gdb/ChangeLog
2019-10-09  Tom Tromey  <tom@tromey.com>

* tui/tui.h: Remove comments.

4 years ago[gdb/testsuite] Add XFAILs in gdb.rust/simple.exp for incorrect DWARF
Tom de Vries [Wed, 9 Oct 2019 21:57:11 +0000 (23:57 +0200)] 
[gdb/testsuite] Add XFAILs in gdb.rust/simple.exp for incorrect DWARF

On openSUSE Leap 15.1 using rustc version 1.36.0 (using llvm 7), I get:
...
(gdb) PASS: gdb.rust/simple.exp: print e2.0
print k^M
$54 = simple::SpaceSaver::Thebox(40, 0x0)^M
(gdb) FAIL: gdb.rust/simple.exp: print k
...
while we're expecting:
...
gdb_test "print k" " = simple::SpaceSaver::Nothing"
...

When using a relatively recent version of Rust with a somewhat older version
of LLVM, the Rust compiler will emit a legacy encoding of enums (see also
quirk_rust_enum in dwarf2read.c).

So, the variable k:
...
 <17><3d58>: Abbrev Number: 15 (DW_TAG_variable)
    <3d59>   DW_AT_location    : 3 byte block: 91 b8 4  (DW_OP_fbreg: 568)
    <3d5d>   DW_AT_name        : (indirect string, offset: 0xf9a): k
    <3d61>   DW_AT_alignment   : 1
    <3d62>   DW_AT_decl_file   : 1
    <3d63>   DW_AT_decl_line   : 129
    <3d64>   DW_AT_type        : <0x4232>
...
has type:
...
 <2><4232>: Abbrev Number: 11 (DW_TAG_union_type)
    <4233>   DW_AT_name        : (indirect string, offset: 0x3037): SpaceSaver
    <4237>   DW_AT_byte_size   : 16
    <4238>   DW_AT_alignment   : 8
 <3><4239>: Abbrev Number: 9 (DW_TAG_member)
    <423a>   DW_AT_name        : (indirect string, offset: 0x29f5): RUST$ENCODED$ENUM$0$Nothing
    <423e>   DW_AT_type        : <0x4245>
    <4242>   DW_AT_alignment   : 8
    <4243>   DW_AT_data_member_location: 0
...

The "RUST$ENCODED$ENUM$0$Nothing" means that field 0 is both a pointer and a
discriminant, and if the value is 0, then the enum is just a data-less variant
named "Nothing".

However, the corresponding type has two fields, where not field 0 but field 1
is a pointer, and field 0 is a byte:
...
 <2><4245>: Abbrev Number: 8 (DW_TAG_structure_type)
    <4246>   DW_AT_name        : (indirect string, offset: 0x2a11): Thebox
    <424a>   DW_AT_byte_size   : 16
    <424b>   DW_AT_alignment   : 8
 <3><424c>: Abbrev Number: 9 (DW_TAG_member)
    <424d>   DW_AT_name        : (indirect string, offset: 0x670): __0
    <4251>   DW_AT_type        : <0x436b>
    <4255>   DW_AT_alignment   : 1
    <4256>   DW_AT_data_member_location: 8
 <3><4257>: Abbrev Number: 9 (DW_TAG_member)
    <4258>   DW_AT_name        : (indirect string, offset: 0x1662): __1
    <425c>   DW_AT_type        : <0x45da>
    <4260>   DW_AT_alignment   : 8
    <4261>   DW_AT_data_member_location: 0
...

Mark this as xfail.

gdb/testsuite/ChangeLog:

2019-10-09  Tom de Vries  <tdevries@suse.de>

PR testsuite/25048
* gdb.rust/simple.exp: Add xfails for incorrect DWARF.

4 years ago[gdb/target] Fix pretty-printer for MPX bnd registers
Tom de Vries [Wed, 9 Oct 2019 21:52:46 +0000 (23:52 +0200)] 
[gdb/target] Fix pretty-printer for MPX bnd registers

I'm seeing this failure:
...
(gdb) print /x $bnd0 = {0x10, 0x20}^M
$23 = {lbound = 0x10, ubound = 0x20}^M
(gdb) FAIL: gdb.arch/i386-mpx.exp: verify size for bnd0
...

The test expects a pretty printer to be actived printing 'size 17':
...
set test_string ".*\\\: size 17.*"
gdb_test "print /x \$bnd0 = {0x10, 0x20}" "$test_string" "verify size for bnd0"
...
but that doesn't happen.

The pretty printer is for the type of the $bnd0 register, which is created
here in i386_bnd_type:
...
      t = arch_composite_type (gdbarch,
                               "__gdb_builtin_type_bound128", TYPE_CODE_STRUCT);

      append_composite_type_field (t, "lbound", bt->builtin_data_ptr);
      append_composite_type_field (t, "ubound", bt->builtin_data_ptr);

      TYPE_NAME (t) = "builtin_type_bound128";
...

And the pretty-printer is registered here in
gdb/python/lib/gdb/printer/bound_registers.py:
...
gdb.printing.add_builtin_pretty_printer ('mpx_bound128',
                                         '^__gdb_builtin_type_bound128',
                                         MpxBound128Printer)
...

Fix the pretty printer by changing the regexp argument of
add_builtin_pretty_printer to match "builtin_type_bound128", the TYPE_NAME.

Tested on x86_64-linux.

gdb/ChangeLog:

2019-10-09  Tom de Vries  <tdevries@suse.de>

* python/lib/gdb/printer/bound_registers.py: Use
'^builtin_type_bound128' as regexp argument for
add_builtin_pretty_printer.

4 years agoMark guile_{extension_,}script_ops as static
Christian Biesinger [Mon, 7 Oct 2019 22:38:51 +0000 (17:38 -0500)] 
Mark guile_{extension_,}script_ops as static

This makes it clearer that the structs are only used in this file. It
required moving the definition of extension_language_guile further
down in the file, because static structs can't be forward-declared.

gdb/ChangeLog:

2019-10-09  Christian Biesinger  <cbiesinger@google.com>

* guile/guile.c (guile_extension_script_ops): Remove forward
declaration and mark as static.
(guile_script_ops): Likewise.
(extension_language_guile): Move further down in the file so
it can reference the definitions for guile_{extension_,}script_ops.

4 years agoFix the disassembly of the LDS and STS instructions of the AVR architecture.
Nick Clifton [Wed, 9 Oct 2019 12:48:06 +0000 (13:48 +0100)] 
Fix the disassembly of the LDS and STS instructions of the AVR architecture.

PR 25041
opcodes * avr-dis.c (avr_operand): Fix construction of address for lds/sts
instructions.

gas * testsuite/gas/avr/pr25041.s: New test.
* testsuite/gas/avr/pr25041.d: New test driver.

4 years agoPR25081, Discrepancy between VMA and LMA after ALIGN
Alan Modra [Wed, 9 Oct 2019 10:55:25 +0000 (21:25 +1030)] 
PR25081, Discrepancy between VMA and LMA after ALIGN

The testcase in the PR has two empty output sections, .sec1 with an
ALIGN and symbol assignment, and .sec2 just with an empty input
section.  The symbol assignment results in .sec1 being kept, but
because it is empty this section doesn't take space from the memory
region as you might expect from the ALIGN.  Instead the next section
.sec2, has vma/lma as if .sec1 wasn't present.  However, .sec2 is
discarded and os->ignored set, which unfortunately meant that dot
wasn't set from .sec2 vma.  That in turn results in .sec2 lma being
set incorrectly.  That vma/lma difference is then propagated to
.sec3 where it is seen as an overlap.

PR 25081
* ldlang.c (lang_size_sections_1): Set lma from section vma
rather than dot.

4 years agos390: Add record/replay support for arch13 instructions
Andreas Arnez [Wed, 9 Oct 2019 09:09:22 +0000 (11:09 +0200)] 
s390: Add record/replay support for arch13 instructions

Enable recording most of the new "arch13" instructions on z/Architecture
targets, except for the specialized-function-assist instructions:

  SORTL - sort lists
  DFLTCC - deflate conversion call
  KDSA - compute digital signature authentication

gdb/ChangeLog:

* s390-tdep.c (390_process_record): Handle new arch13 instructions
except SORTL, DFLTCC, and KDSA.

4 years agoPR25070, SEGV in function _bfd_dwarf2_find_nearest_line
Alan Modra [Wed, 9 Oct 2019 00:17:13 +0000 (10:47 +1030)] 
PR25070, SEGV in function _bfd_dwarf2_find_nearest_line

Evil testcase with two debug info sections, with sizes of 2aaaabac4ec1
and ffffd5555453b140 result in a total size of 1.  Reading the first
section of course overflows the buffer and tramples on other memory.

PR 25070
* dwarf2.c (_bfd_dwarf2_slurp_debug_info): Catch overflow of
total_size calculation.

4 years agoAutomatic date update in version.in
GDB Administrator [Wed, 9 Oct 2019 00:00:17 +0000 (00:00 +0000)] 
Automatic date update in version.in

4 years agoRemove two unused items from windows-nat.c
Tom Tromey [Tue, 8 Oct 2019 17:21:46 +0000 (11:21 -0600)] 
Remove two unused items from windows-nat.c

windows_thread_info_struct::sf is unused, as is
struct safe_symbol_file_add_args in windows-nat.c.
This patch removes them both.  Tested by grep and
rebuilding.

gdb/ChangeLog
2019-10-08  Tom Tromey  <tromey@adacore.com>

* windows-nat.c (struct windows_thread_info_struct) <sf>: Remove.
(struct safe_symbol_file_add_args): Remove.

4 years agoDon't include buildsym-legacy.h in windows-nat.c
Tom Tromey [Wed, 2 Oct 2019 19:24:15 +0000 (13:24 -0600)] 
Don't include buildsym-legacy.h in windows-nat.c

I noticed that windows-nat.c includes buildsym-legacy.h -- but there's
no reason to do so, as windows-nat.c doesn't create any symbols.

gdb/ChangeLog
2019-10-08  Tom Tromey  <tromey@adacore.com>

* windows-nat.c: Don't include buildsym-legacy.h.

4 years agoLet ARI allow gdb %p printf extensions
Tom Tromey [Wed, 2 Oct 2019 16:13:33 +0000 (10:13 -0600)] 
Let ARI allow gdb %p printf extensions

As pointed out by Simon, this changes ARI to allow the gdb-specific %p
printf extensions.

gdb/ChangeLog
2019-10-08  Tom Tromey  <tromey@adacore.com>

* contrib/ari/gdb_ari.sh (%p): Allow gdb-specific %p extensions.

4 years agoMove declaration of overload_debug to header
Christian Biesinger [Mon, 7 Oct 2019 19:40:32 +0000 (14:40 -0500)] 
Move declaration of overload_debug to header

gdb/ChangeLog:

2019-10-08  Christian Biesinger  <cbiesinger@google.com>

* gdbtypes.c (overload_debug): Move comment to header.
* gdbtypes.h (overload_debug): Declare.
* valops.c: Remove declaration of overload_debug, instead
include gdbtypes.h.

4 years agoMove declaration of lang_frame_mismatch_warn to header.
Christian Biesinger [Mon, 7 Oct 2019 17:55:44 +0000 (12:55 -0500)] 
Move declaration of lang_frame_mismatch_warn to header.

Also makes it localizable.

gdb/ChangeLog:

2019-10-08  Christian Biesinger  <cbiesinger@google.com>

* language.c (show_language_command): Pass lang_frame_mismatch_warn
through _().
(lang_frame_mismatch_warn): Make const, mark with N_(), and
move comment...
* language.h (lang_frame_mismatch_warn): ... here. Also add
declaration.
* top.c (lang_frame_mismatch_warn): Remove declaration.
(check_frame_language_change): Pass lang_frame_mismatch_warn
through _().

4 years agoPR25079, "ar s" stopped working
Alan Modra [Tue, 8 Oct 2019 13:41:28 +0000 (00:11 +1030)] 
PR25079, "ar s" stopped working

's' is both a command and a modifier.  If given as a command then we
aren't lacking an operation.  I think the same goes when mri mode is
selected: any following command line used to be ignored.

PR 25079
* ar.c (decode_options): Don't try for command options if
write_armap or mri_mode is selected.

4 years agoPR25078, stack overflow in function find_abstract_instance
Alan Modra [Tue, 8 Oct 2019 13:37:29 +0000 (00:07 +1030)] 
PR25078, stack overflow in function find_abstract_instance

PR 25078
* dwarf2.c (find_abstract_instance): Delete orig_info_ptr, add
recur_count.  Error on recur_count reaching 100 rather than
info_ptr matching orig_info_ptr.  Adjust calls.

4 years agoPowerPC local got test
Alan Modra [Tue, 8 Oct 2019 00:30:11 +0000 (11:00 +1030)] 
PowerPC local got test

This is the one that causes ld segfaults between 2019-10-04 and
2019-10-07.  Bug introduced with f749f26eea, fixed by 93370e8e7b.

* testsuite/ld-powerpc/localgot.s,
* testsuite/ld-powerpc/localgot.d: New test.
* testsuite/ld-powerpc/powerpc.exp: Run it.

4 years agoS/390: Add support for z15 as CPU name.
Andreas Krebbel [Tue, 8 Oct 2019 09:23:57 +0000 (11:23 +0200)] 
S/390: Add support for z15 as CPU name.

So far z15 was identified as arch13. After the machine has been
announced we can now add the real name.

gas/ChangeLog:

2019-10-08  Andreas Krebbel  <krebbel@linux.ibm.com>

* config/tc-s390.c (s390_parse_cpu): Add z15 as alternate CPU
name.
* doc/as.texi: Add z15 to CPU string list.
* doc/c-s390.texi: Likewise.

opcodes/ChangeLog:

2019-10-08  Andreas Krebbel  <krebbel@linux.ibm.com>

* s390-mkopc.c (main): Enable z15 as CPU string in the opcode
table.

4 years agoAutomatic date update in version.in
GDB Administrator [Tue, 8 Oct 2019 00:00:41 +0000 (00:00 +0000)] 
Automatic date update in version.in

4 years agoMove declaration of vtbl_ptr_name to the header.
Christian Biesinger [Mon, 7 Oct 2019 18:23:34 +0000 (13:23 -0500)] 
Move declaration of vtbl_ptr_name to the header.

There are conflicting comments about whether this was
introduced in GCC 2.4.5 or GCC 2.6 and I don't know
which one is correct...

gdb/ChangeLog:

2019-10-07  Christian Biesinger  <cbiesinger@google.com>

* c-lang.h (vtbl_ptr_name): Declare.
* cp-valprint.c (vtbl_ptr_name): Remove "extern" now that we get
it from the header.
* stabsread.c (define_symbol): Remove declaration of vtbl_ptr_name.

4 years agoUse gdb_static_assert in charset.c
Christian Biesinger [Mon, 7 Oct 2019 17:33:06 +0000 (12:33 -0500)] 
Use gdb_static_assert in charset.c

It currently has a "manual" static assert.

gdb/ChangeLog:

2019-10-07  Christian Biesinger  <cbiesinger@google.com>

* charset.c (your_gdb_wchar_t_is_bogus): Replace with a
gdb_static_assert.

4 years agoMove top-level Makefile.def/Makefile.in to the top-level ChangeLog
Weimin Pan [Mon, 7 Oct 2019 16:22:14 +0000 (16:22 +0000)] 
Move top-level Makefile.def/Makefile.in to the top-level ChangeLog

4 years agoAdd support for new functionality in the msp430 backend of GCC.
Jozef Lawrynowicz [Mon, 7 Oct 2019 15:34:31 +0000 (16:34 +0100)] 
Add support for new functionality in the msp430 backend of GCC.

This functionality will generate a new GNU object attribute for the "data region"
has been added. This object attribute is used
mark whether the compiler has generated code assuming that data could be in the
upper or lower memory regions.

Code which assumes data is always in the lower memory region is incompatible
with code which uses the full memory range for data.

The patch also adds a new assembler directive ".mspabi_attribute" to handle the
existing MSPABI object attributes. GCC will now emit both .gnu_attribute and
.mspabi_attribute directives to indicate what options the source file was
compiled with.

The assembler will now check the values set in these directives against the
options that the it has been invoked with. If there is a discrepancy, the
assembler will exit with an error.

bfd * elf32-msp430.c (elf32_msp430_merge_mspabi_attributes): Rename to..
(elf32_msp430_merge_msp430_attributes): Add support for merging the GNU
object attribute for data region.

binutils* readelf.c (display_msp430_gnu_attribute): New.
(process_arch_specific): Use msp430 specific handler for GNU
attributes.

gas * config/tc-msp430.c (md_parse_option): Set lower_data_region_only to
FALSE if the data region is set to "upper", "either" or "none".
(msp430_object_attribute): New.
(md_pseudo_table): Handle .mspabi_attribute and .gnu_attribute.
(msp430_md_end): Replace hard-coded attribute values with enums.
Handle data region object attribute.
* doc/as.texi: Document MSP430 Data Region object attribute.
* doc/c-msp430.texi: Document the .mspabi_attribute directive.
* testsuite/gas/msp430/attr-430-small-bad.d: New test.
* testsuite/gas/msp430/attr-430-small-bad.l: New test.
* testsuite/gas/msp430/attr-430-small-good.d: New test.
* testsuite/gas/msp430/attr-430-small.s: New test.
* testsuite/gas/msp430/attr-430x-large-any-bad.d: New test.
* testsuite/gas/msp430/attr-430x-large-any-bad.l: New test.
* testsuite/gas/msp430/attr-430x-large-any-good.d: New test.
* testsuite/gas/msp430/attr-430x-large-any.s: New test.
* testsuite/gas/msp430/attr-430x-large-lower-bad.d: New test.
* testsuite/gas/msp430/attr-430x-large-lower-bad.l: New test.
* testsuite/gas/msp430/attr-430x-large-lower-good.d: New test.
* testsuite/gas/msp430/attr-430x-large-lower.s: New test.
* testsuite/gas/msp430/msp430.exp: Run new tests.

include * elf/msp430.h: Add enums for MSPABI and GNU object attribute tag names
and values.

ld * testsuite/ld-msp430-elf/attr-gnu-main.s: New test.
* testsuite/ld-msp430-elf/attr-gnu-obj.s: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-lower-upper.d: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-lower.d: New test.
* testsuite/ld-msp430-elf/attr-gnu-region-upper.d: New test.
* testsuite/ld-msp430-elf/msp430-elf.exp: Run new tests.

4 years agoRe: PowerPC PIC vs. DLL TLS issues
Alan Modra [Mon, 7 Oct 2019 12:44:31 +0000 (23:14 +1030)] 
Re: PowerPC PIC vs. DLL TLS issues

A bug crept into commit f749f26eea, which could cause linker
segfaults when creating PIEs.  This patch fixes it.

* elf64-ppc.c (ppc64_elf_size_dynamic_sections): Do allocate
space for local got non-tls relocs when PIE.

4 years agogdb/testsuite/ada: Handle missing debug info case
Andrew Burgess [Mon, 7 Oct 2019 12:10:55 +0000 (13:10 +0100)] 
gdb/testsuite/ada: Handle missing debug info case

Update a test script to handle the case where missing Ada debug
information means we can't catch exceptions.  This was discussed on
the list here:

  https://sourceware.org/ml/gdb-patches/2019-08/msg00607.html

And is similar to code that already exists in the test scripts
gdb.ada/catch_ex.exp and gdb.ada/mi_catch_ex.exp.

gdb/testsuite/ChangeLog:

* gdb.ada/catch_ex_std.exp: Handle being unabled to catch Ada
exceptions due to missing debug information.

4 years agogdb: Rename structures within ctfread.c
Andrew Burgess [Mon, 7 Oct 2019 11:34:51 +0000 (12:34 +0100)] 
gdb: Rename structures within ctfread.c

Commit:

  commit 30d1f0184953478d14641c495261afd06ebfabac
  Date:   Mon Oct 7 00:46:52 2019 +0000

      gdb: CTF support

Introduces some structures with names that are already in use within
GBB, this violates C++'s one-definition rule.  Specifically the
structures 'nextfield' and 'field_info' are now defined in
dwarf2read.c and ctfread.c.

This commit renames the new structures (in ctfread.c), adding a 'ctf_'
prefix.  Maybe we should consider renaming the DWARF versions too in
the future to avoid accidental conflicts.

gdb/ChangeLog:

* ctfread.c (struct nextfield): Renamed to ...
(struct ctf_nextfield): ... this.
(struct field_info): Renamed to ...
(strut ctf_field_info): ... this.
(attach_fields_to_type): Update for renamed structures.
(ctf_add_member_cb): Likewise.
(ctf_add_enum_member_cb): Likewise.
(process_struct_members): Likewise.
(process_enum_type): Likewise.

4 years ago[gdb/testsuite] Update expected _gdb_major/_gdb_minor in default.exp
Tom de Vries [Mon, 7 Oct 2019 10:50:04 +0000 (12:50 +0200)] 
[gdb/testsuite] Update expected _gdb_major/_gdb_minor in default.exp

Now that commit "225f296a023 Change gdb/version.in to 9.0.50.DATE-git (new
version numbering scheme)" has changed the gdb version number, we see:
...
FAIL: gdb.base/default.exp: show convenience ($_gdb_major = 8 not found)
...

Fix this by updating the expected _gdb_major/_gdb_minor to 9.1.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-07  Tom de Vries  <tdevries@suse.de>

* gdb.base/default.exp: Expect _gdb_major/_gdb_minor to be 9.1.

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