binutils-gdb.git
4 years agogdb: add type::has_no_signedness / type::set_has_no_signedness
Simon Marchi [Mon, 14 Sep 2020 15:07:57 +0000 (11:07 -0400)]
gdb: add type::has_no_signedness / type::set_has_no_signedness

Add the `has_no_signedness` and `set_has_no_signednes` methods on `struct
type`, in order to remove the `TYPE_NOSIGN` macro.  In this patch, the macro is
changed to use the getter, so all the call sites of the macro that are used as
a setter are changed to use the setter method directly.  The next patch will
remove the macro completely.

gdb/ChangeLog:

* gdbtypes.h (struct type) <has_no_signedness,
set_has_no_signedness>: New methods.
(TYPE_NOSIGN): Use type::has_no_signedness, change all write
call sites to use type::set_has_no_signedness.

Change-Id: I80d8e774316d146fbd814b2928ad5392bada39d5

4 years agogdb: remove TYPE_UNSIGNED
Simon Marchi [Mon, 14 Sep 2020 15:07:57 +0000 (11:07 -0400)]
gdb: remove TYPE_UNSIGNED

gdb/ChangeLog:

* gdbtypes.h (TYPE_UNSIGNED): Remove, replace all uses with
type::is_unsigned.

Change-Id: I84f76f5cd44ff7294e421d317376a9e476bc8666

4 years agogdb: add type::is_unsigned / type::set_is_unsigned
Simon Marchi [Mon, 14 Sep 2020 15:07:56 +0000 (11:07 -0400)]
gdb: add type::is_unsigned / type::set_is_unsigned

Add the `is_unsigned` and `set_is_unsigned` methods on `struct type`, in
order to remove the `TYPE_UNSIGNED` macro.  In this patch, the
`TYPE_UNSIGNED` macro is changed to use `type::is_unsigned`, so all the
call sites that are used to set this property on a type are changed to
use the new method.  The next patch will remove the macro completely.

gdb/ChangeLog:

* gdbtypes.h (struct type) <is_unsigned, set_is_unsigned>: New
methods.
(TYPE_UNSIGNED): Use type::is_unsigned.  Change all write call
sites to use type::set_is_unsigned.

Change-Id: Ib09ddce84eda160a801a8f288cccf61c8ef136bc

4 years agoFix exception stack unwinding for ARM Cortex-M
Fredrik Hederstierna [Mon, 14 Sep 2020 13:56:34 +0000 (14:56 +0100)]
Fix exception stack unwinding for ARM Cortex-M

For Cortex-M targets using floating-point, eg the Cortex-M4F, its not possible
to get any call-stack backtrace if setting a breakpoint in ISR.

The exception stack unwinder for Cortex-M does not consider if floating-point
registers was stacked or not, further the Cortex-M has two stack pointers: MSP
(Main Stack Pointer) and PSP (Process Stack Pointer).
This is not handled when GDB tries to backtrace in the exception stack
unwinder.

This patch fixes this, and gives a correct call-stack backtrace from
breakpoints set in a handler or ISR.

gdb/ChangeLog:

        * arm-tdep.c (arm_m_exception_cache): Try use correct stack
        pointer and stack frame offset when unwinding.

4 years agoCSKY: Set feature flags for default cpu.
Cooper Qu [Sun, 13 Sep 2020 12:48:06 +0000 (20:48 +0800)]
CSKY: Set feature flags for default cpu.

Fix floating point instructions not recognized when building GCC.

gas/
PR 26608
* config/tc-csky.c (md_begin): Set feature flags for default
cpu.

4 years ago[gdb/testsuite] Fix PATH warning in gdb.rust/traits.exp
Tom de Vries [Mon, 14 Sep 2020 07:54:47 +0000 (09:54 +0200)]
[gdb/testsuite] Fix PATH warning in gdb.rust/traits.exp

When running the rust test-cases with release 1.36.0 and LLVM version 7.0, I
run into:
...
(gdb) UNTESTED: gdb.rust/traits.exp: could not read \
  outputs/gdb.rust/traits/traits with readelf
PATH: gdb.rust/traits.exp: could not read \
  outputs/gdb.rust/traits/traits with readelf
...

Fix the PATH warning by printing [file tail $binfile] instead $binfile.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2020-09-14  Tom de Vries  <tdevries@suse.de>

* gdb.rust/traits.exp: Fix PATH warning.

4 years agoAutomatic date update in version.in
GDB Administrator [Mon, 14 Sep 2020 00:00:14 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agogdb/testsuite: Explicitly return from main
Pedro Alves [Sun, 13 Sep 2020 21:47:01 +0000 (22:47 +0100)]
gdb/testsuite: Explicitly return from main

I've been playing with a board file that forces every testcase to
include a header file that does something like:

  #define main __gdb_testcase_main

and then links an actual main() function that does some
initialization and then jumps to __gdb_testcase_main.

That runs into a number of testcases relying on main not having an
explicit return statement, like e.g.,:

 gdb/build/gdb/testsuite/../../../src/gdb/testsuite/gdb.base/catch-follow-exec.c:27:1: warning: non-void function does not return a value [-Wreturn-type]
 gdb/build/gdb/testsuite/../../../src/gdb/testsuite/gdb.base/catch-signal.c:47:1: warning: non-void function does not return a value [-Wreturn-type]

We don't get those warnings without my board because it is valid to
not explicitly return from main.  There's an implicit "return 0;".

Since it doesn't hurt to be explicit, I've went ahead and added the
explicit return statements.

Also, a couple testcases either don't explicitly specify main's return
type, or return void.  Those are tweaked to explicitly return int.

gdb/testsuite/ChangeLog:

* gdb.base/catch-follow-exec.c (main): Add explicit return
statement.
* gdb.base/catch-signal.c (main): Likewise.
* gdb.base/condbreak-call-false.c (main): Likewise.
* gdb.base/consecutive.c (main): Add explicit return
statement and return type.
* gdb.base/cursal.c (main): Add explicit return statement.
* gdb.base/cvexpr.c (main): Likewise.
* gdb.base/display.c (main): Add explicit return statement and
return type.
* gdb.base/dprintf-detach.c (main): Add explicit return statement.
* gdb.base/endianity.c (main): Likewise.
* gdb.base/execd-prog.c (main): Likewise.
* gdb.base/gdb1090.c (main): Likewise.
* gdb.base/info_qt.c (main): Likewise.
* gdb.base/lineinc.c (main): Likewise.
* gdb.base/load-command.c (main): Likewise.
* gdb.base/macscp1.c (main): Likewise.
* gdb.base/pr10179-a.c (main): Likewise.
* gdb.base/quit-live.c (main): Likewise.
* gdb.base/scope0.c (main): Likewise.
* gdb.base/settings.c (main): Likewise.
* gdb.base/stack-checking.c (main): Return int.
* gdb.base/varargs.c (main): Add explicit return statement.
* gdb.cp/ambiguous.cc (main): Likewise.
* gdb.cp/anon-struct.cc (main): Likewise.
* gdb.cp/anon-union.cc (main): Likewise.
* gdb.cp/bool.cc (main): Likewise.
* gdb.cp/bs15503.cc (main): Likewise.
* gdb.cp/cplusfuncs.cc (main): Likewise.
* gdb.cp/cttiadd.cc (main): Likewise.
* gdb.cp/extern-c.cc (main): Likewise.
* gdb.cp/filename.cc (main): Likewise.
* gdb.cp/formatted-ref.cc (main): Likewise.
* gdb.cp/mb-ctor.cc (main): Likewise.
* gdb.cp/member-ptr.cc (main): Likewise.
* gdb.cp/minsym-fallback-main.cc (main): Likewise.
* gdb.cp/overload-const.cc (main): Likewise.
* gdb.cp/paren-type.cc (main): Likewise.
* gdb.cp/parse-lang.cc (main): Likewise.
* gdb.cp/pr-1023.cc (main): Likewise.
* gdb.cp/psmang1.cc (main): Likewise.
* gdb.cp/readnow-language.cc (main): Likewise.
* gdb.cp/ref-params.cc (main): Likewise.
* gdb.cp/rvalue-ref-params.cc (main): Likewise.
* gdb.cp/virtbase2.cc (main): Likewise.
* gdb.dwarf2/dw2-abs-hi-pc.c (main): Likewise.
* gdb.dwarf2/dw2-namespaceless-anonymous.c (main): Likewise.
* gdb.dwarf2/dw4-toplevel-types.cc (main): Likewise.
* gdb.mi/mi-console.c (main): Likewise.
* gdb.mi/mi-read-memory.c (main): Likewise.
* gdb.modula2/multidim.c (main): Likewise.
* gdb.opt/inline-small-func.c (main): Likewise.
* gdb.python/py-rbreak.c (main): Likewise.
* gdb.stabs/exclfwd1.c (main): Likewise.
* gdb.trace/qtro.c (main): Likewise.

4 years agoFix gdb.base/share-env-with-gdbserver.exp with Clang
Pedro Alves [Sun, 13 Sep 2020 20:28:09 +0000 (21:28 +0100)]
Fix gdb.base/share-env-with-gdbserver.exp with Clang

The testcase has GDB call my_getenv in the inferior, and that fails
with Clang, because Clang optimizes out my_getenv completely, since it
isn't called anywhere (in the program).

This commit fixes it.

gdb/testsuite/ChangeLog:

* gdb.base/share-env-with-gdbserver.c (main): Call my_getenv
instead of getenv.

4 years agoMake default_mi_gdb_start/dbx_gdb_start use gdb_spawn
Pedro Alves [Sun, 13 Sep 2020 19:31:25 +0000 (20:31 +0100)]
Make default_mi_gdb_start/dbx_gdb_start use gdb_spawn

If a board file wants to customize how gdb is launched, the obvious
way is to have the board override gdb_spawn.  However, that doesn't
work for either gdb.mi/ testcases or gdb.base/dbx.exp, because
default_mi_gdb_start and dbx_gdb_start don't use gdb_spawn currently.

That is fixed by this patch.

gdb/testsuite/

* gdb.base/dbx.exp (dbx_gdb_start): Adjust to use gdb_spawn
instead of spawning GDB with remote_spawn.
* lib/mi-support.exp (default_mi_gdb_start): Adjust to use
gdb_spawn instead of spawning GDB with remote_spawn.

4 years agoFix a couple gdb.dwarf2/ testcases with "clang -flto"
Pedro Alves [Sun, 13 Sep 2020 17:17:18 +0000 (18:17 +0100)]
Fix a couple gdb.dwarf2/ testcases with "clang -flto"

gdb.dwarf2/atomic-type.exp and gdb.dwarf2/ada-linkage-name.exp fail
when testing with "clang -flto" as compiler, like:

 $ make check TESTS="gdb.dwarf2/ada-linkage-name.exp" RUNTESTFLAGS="CC_FOR_TARGET='clang -flto'"

because with -flto, functions that aren't referenced anywhere are not
emitted in the final binary.  Fix it by adding uses of the functions.

gdb/testsuite/ChangeLog:

* gdb.dwarf2/ada-linkage-name.c (main): Move to the bottom of the
file and add calls to first and second.
* gdb.dwarf2/atomic.c (main): Move to the bottom of the file and
add call to f.

4 years agoAdd MI "-break-insert --qualified"
Pedro Alves [Sun, 13 Sep 2020 17:02:19 +0000 (18:02 +0100)]
Add MI "-break-insert --qualified"

Currently -break-insert always creates a wildmatching breakpoint, and
there's no way to ask for a fullname match.  To address that, this
patch adds the equivalent of "break -qualified" to MI:

  "-break-insert --qualified".

For the testcase, curiously, it doesn't look like we have _any_
testcase that tests a breakpoint with multiple locations, and, the
existing mi_create_breakpoint / mi_make_breakpoint procedures are only
good for breakpoints with a single location.  This patch thus adds a
few new companion routines to mi-support.exp for breakpoints with
multiple locations: mi_create_breakpoint_multi,
mi_make_breakpoint_loc, mi_make_breakpoint_multi.

gdb/ChangeLog:

* NEWS: Document "-break-insert --qualified".
* mi/mi-cmd-break.c (mi_cmd_break_insert_1): Handle "--qualified".

gdb/doc/ChangeLog:

* gdb.texinfo (GDB/MI Breakpoint Commands): Document
"-break-insert --qualified" and "-dprintf-insert --qualified".

gdb/testsuite/ChangeLog:

* gdb.mi/mi-break-qualified.cc: New file.
* gdb.mi/mi-break-qualified.exp: New file.
* lib/mi-support.exp (mi_create_breakpoint_multi)
(mi_make_breakpoint_loc, mi_make_breakpoint_multi): New
procedures.
(mi_create_breakpoint_1): New, factored out from
mi_create_breakpoint.

4 years agoRemove stale "register" bits from gdb.cp/misc.cc
Pedro Alves [Sat, 22 Aug 2020 17:00:55 +0000 (18:00 +0100)]
Remove stale "register" bits from gdb.cp/misc.cc

gdb.cp/misc.cc seems to have been originally copied from
gdb.cp/classes.cc.  The testcases that use it, misc.exp and
inherit.exp don't reference the "register" bits anywhere.  Remove
them, since they trigger warnings with newer GCCs, given "register" is
being removed in C++17.

gdb/testsuite/ChangeLog:

* gdb.cp/inherit.exp: No longer pass -Wno-deprecated-register.
* gdb.cp/misc.exp: No longer pass -Wno-deprecated-register.
* gdb.cp/misc.cc (class small, small::method, marker_reg1)
(register_class): Delete.
(main): Don't call register_class.

4 years agoMove "register" test out of classes.exp to a separate testcase
Pedro Alves [Sun, 13 Sep 2020 14:36:00 +0000 (15:36 +0100)]
Move "register" test out of classes.exp to a separate testcase

The gdb.cp/classes.exp testcase has one test that tries to exercise
the case of calling a method on a variable that has been put in a
register.

See the declaration of small in classes.cc:

/* Try to get the compiler to allocate a class in a register.  */
class small {
 public:
  int x;
  int method ();
};

and the comment in classes.exp:

    # This class is so small that an instance of it can fit in a register.
    # When gdb tries to call a method, it gets embarrassed about taking
    # the address of a register.
    #
    # TODO: I think that message should be a PASS, not an XFAIL.
    # gdb prints an informative message and declines to do something
    # impossible.
    #
    # The method call actually succeeds if the compiler allocates very
    # small classes in memory instead of registers.  So this test does
    # not tell us anything interesting if the call succeeds.
    #
    # -- chastain 2003-12-31

And these comments:

 https://gcc.gnu.org/legacy-ml/gcc/2010-05/msg00116.html
 https://gcc.gnu.org/legacy-ml/gcc/2010-05/msg00117.html

 "register keyword has other uses, e.g. for -O0 code variables
 declared with register keyword can be put into registers, while
 variables declared without it always get stack slots."

 "I think it does, without optimization.  There's some unique GDB
 tests that use this.  It causes them to be live between statements in
 a machine register instead of always stored in stack slots."

The "register" keyword seems to be ignored by the compiler nowadays
even at -O0, though.  With or without the register keyword, the
variable is given a stack slot, at least on x86-64 with GCC 9.

However, if we use the GCC extension to put the variable
in a specific variable:

 https://gcc.gnu.org/onlinedocs/gcc-10.2.0/gcc/Local-Register-Variables.html#Local-Register-Variables

 diff --git c/gdb/testsuite/gdb.cp/classes.cc w/gdb/testsuite/gdb.cp/classes.cc
 index 5ea360e4d06..6dcf34689b8 100644
 --- c/gdb/testsuite/gdb.cp/classes.cc
 +++ w/gdb/testsuite/gdb.cp/classes.cc
 @@ -629,7 +629,7 @@ register_class ()
    /* We don't call any methods for v, so gcc version cygnus-2.3.3-930220
       might put this variable in a register.  This is a lose, though, because
       it means that GDB can't call any methods for that variable.  */
 -  register small v;
 +  register small v asm ("rax");

then it works, and we get an XFAIL:

 print v.method ()
 Address requested for identifier "v" which is in register $rax
 (gdb) XFAIL: gdb.cp/classes.exp: calling method for small class (PRMS 2972)

I think that what we should do here is move this test into its own
file, use that GCC syntax to force it to a register, and do as the
comment says -- issue a pass instead of an XFAIL.

That's what this commit does.

Note that we don't need -Wno-deprecated-register (nor -Wno-register)
anymore in the new testcase, because GNU register-asm local variables
don't trigger the warning, with either GCC or Clang.

gdb/testsuite/ChangeLog:

* gdb.cp/classes.exp: No longer pass -Wno-deprecated-register.
(do_tests): Remove "calling method for small class" test.
* gdb.cp/classes.cc (class small, small::method, marker_reg1)
(register_class): Delete.
(main): Don't call register_class.
* gdb.cp/call-method-register.exp: New file, based on bits removed
from classes.exp.
* gdb.cp/call-method-register.cc: New file, based on bits removed
from classes.cc.

4 years agoDon't drop static function bp locations w/o debug info
Pedro Alves [Sun, 13 Sep 2020 12:34:10 +0000 (13:34 +0100)]
Don't drop static function bp locations w/o debug info

Currently, with a program built from these sources:

 $ cat extern.c
 void foo () {}
 $ cat static.c
 static void foo () {}
 $ cat main.c
 int main () { return 0; }

... if you set a breakpoint on "foo", like:

 (gdb) break foo

.. when there's debug info, GDB creates a breakpoint with two
locations, one for each of the external and static functions.

But, when there's no debug info, GDB creates a breakpoint with a
single location, for the external foo.  Vis:

 $ gcc extern.c static.c main.c -o classify.nodebug
 $ gcc extern.c static.c main.c -o classify.debug -g

 $ gdb classify.nodebug
 Reading symbols from classify.nodebug...
 (No debugging symbols found in classify.nodebug)
 (gdb) b foo
 Breakpoint 1 at 0x40048b
 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   0x000000000040048b <foo+4>
 (gdb)

 $ gdb classify.debug
 Reading symbols from classify.debug...
 (gdb) b foo
 Breakpoint 1 at 0x40048b: foo. (2 locations)
 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   <MULTIPLE>
 1.1                         y   0x000000000040048b in foo at extern.c:1
 1.2                         y   0x0000000000400492 in foo at static.c:1

GDB drops the static function is search_minsyms_for_name, where at the
very end of that function we pick only the locations with highest
classification, according to classify_type.

The classify_type logic was introduced here:

  https://sourceware.org/pipermail/gdb-patches/2011-December/087864.html

which said:

 "Previously, linespec was trying to filter out minsyms as they were
  seen.  However, this isn't faithful to gdb's historical approach,
  which is to priority-order minsyms; see lookup_minimal_symbol."

lookup_minimal_symbol's intro says, in the .c file:

/* Look through all the current minimal symbol tables and find the
   first minimal symbol that matches NAME.  If OBJF is non-NULL, limit
   the search to that objfile.  If SFILE is non-NULL, the only file-scope
   symbols considered will be from that source file (global symbols are
   still preferred).  Returns a pointer to the minimal symbol that
   matches, or NULL if no match is found.

   Note:  One instance where there may be duplicate minimal symbols with
   the same name is when the symbol tables for a shared library and the
   symbol tables for an executable contain global symbols with the same
   names (the dynamic linker deals with the duplication).

   It's also possible to have minimal symbols with different mangled
   names, but identical demangled names.  For example, the GNU C++ v3
   ABI requires the generation of two (or perhaps three) copies of
   constructor functions --- "in-charge", "not-in-charge", and
   "allocate" copies; destructors may be duplicated as well.
   Obviously, there must be distinct mangled names for each of these,
   but the demangled names are all the same: S::S or S::~S.  */

struct bound_minimal_symbol
lookup_minimal_symbol (const char *name, const char *sfile,
       struct objfile *objf)
{

If you look inside this function, you'll see:

  /* External symbols are best.  */
...
  /* File-local symbols are next best.  */
...
  /* Symbols for shared library trampolines are next best.  */
...

While this logic is good when you're looking for the single "best"
symbol by name, I question it for linespecs, since we want to set
breakpoints in all the multiple locations that match.  I see no point
in hidding static functions.

Now, for breakpoints, it does make sense to filter out PLT/trampoline
symbols if we find the actual global matching function symbol.
Otherwise, if we did no filtering (i.e., just removed the
classify_type logic), you would end up with e.g.:

 (gdb) b printf
 Breakpoint 1 at 0x413a60 (2 locations)
 (top-gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1      breakpoint     keep y   <MULTIPLE>
 1.1                         y   0x0000000000413a60 <printf@plt>
 1.2                         y   0x00007ffff4653640 in __printf at printf.c:28

instead of this (which is what we get currently) before the shared
library is loaded (a location set in the PLT):

 (gdb) b printf
 Breakpoint 1 at 0x413a60
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   0x0000000000413a60 <printf@plt>

and this after the library is loaded (only one location, no breakpoint
in the PLT):

 (gdb) b printf
 Breakpoint 1 at 0x7ffff4653640: file printf.c, line 28.
 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   0x00007ffff4653640 in __printf at printf.c:28

This patch fixes the missing breakpoint locations issue by replacing
the classify_type logic in linespec.c with a different logic.
Instead, discard a trampoline symbol if we also found a
global/external symbol with the same name.  The patch adds a couple of
testcases testing locations in external vs static functions vs
trampolines/PLTs.

We now get:

For the msym-bp.exp testcase (extern vs static), without debug info:

 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   <MULTIPLE>
 1.1                         y   0x000000000040048b <foo+4>          ### missing before patch
 1.2                         y   0x000000000040049d <foo+4>

For the msym-bp.exp testcase (extern vs static), with debug info:

 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   <MULTIPLE>
 1.1                         y   0x000000000040048b in foo at src/gdb/testsuite/gdb.base/msym-bp.c:21
 1.2                         y   0x000000000040049d in foo at src/gdb/testsuite/gdb.base/msym-bp-2.c:21

For the msym-bp-shl.exp testcase (static vs plt), without debug info, before running to main:

 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   <MULTIPLE>
 1.1                         y   0x00000000004004e0 <foo@plt>        ### missing before patch
 1.2                         y   0x00000000004005db <foo+4>

For the msym-bp-shl.exp testcase (static vs plt), without debug info, after running to main:

 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   <MULTIPLE>
 1.1                         y   0x00000000004005db <foo+4>          ### missing before patch
 1.2                         y   0x00007ffff7bd65de <foo+4>

For the msym-bp-shl.exp testcase (static vs plt), with debug info, before running to main:

 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   <MULTIPLE>
 1.1                         y   0x00000000004004e0 <foo@plt>        ### missing before patch
 1.2                         y   0x00000000004005db in foo at src/gdb/testsuite/gdb.base/msym-bp-shl-main-2.c:21

For the msym-bp-shl.exp testcase (static vs plt), with debug info, after running to main:

 (gdb) info breakpoints
 Num     Type           Disp Enb Address            What
 1       breakpoint     keep y   <MULTIPLE>
 1.1                         y   0x00000000004005db in foo at src/gdb/testsuite/gdb.base/msym-bp-shl-main-2.c:21
 1.2                         y   0x00007ffff7bd65de in foo at src/gdb/testsuite/gdb.base/msym-bp-shl-lib.c:21

gdb/ChangeLog:

* linespec.c (classify_mtype, compare_msyms): Delete.
(search_minsyms_for_name): Remove classification logic.  Instead
filter out trampoline symbols if we also found an external
function of the same name.

gdb/testsuite/ChangeLog:

* gdb.base/msym-bp-2.c: New.
* gdb.base/msym-bp-shl-lib.c: New file.
* gdb.base/msym-bp-shl-main-2.c: New file.
* gdb.base/msym-bp-shl-main.c: New file.
* gdb.base/msym-bp-shl.exp: New file.
* gdb.base/msym-bp.c: New file.
* gdb.base/msym-bp.exp: New file.

4 years agoRe: elf: Add -z unique-symbol
Alan Modra [Sun, 13 Sep 2020 08:26:52 +0000 (17:56 +0930)]
Re: elf: Add -z unique-symbol

PR 26391
* testsuite/ld-elf/pr26391.nd: Adjust to match powerpc64 function
descriptors.

4 years agoUpdate NEWS post GDB 10 branch creation.
Joel Brobecker [Sun, 13 Sep 2020 02:43:47 +0000 (19:43 -0700)]
Update NEWS post GDB 10 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.

4 years agoBump version to 11.0.50.DATE-git.
Joel Brobecker [Sun, 13 Sep 2020 02:34:28 +0000 (19:34 -0700)]
Bump version to 11.0.50.DATE-git.

Now that the GDB 10 branch has been created, we can
bump the version number.

gdb/ChangeLog:

GDB 10 branch created (8087c3fa8b5d695e3e29e69d70d0b35ec902ac59):
* version.in: Bump version to 11.0.50.DATE-git.

gdb/testsuite/ChangeLog:

* gdb.base/default.exp: Change $_gdb_major to 11.

4 years agoAutomatic date update in version.in
GDB Administrator [Sun, 13 Sep 2020 00:00:14 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoFix GDB build in infrun.c when configured with unit tests disabled
Joel Brobecker [Sat, 12 Sep 2020 19:30:56 +0000 (12:30 -0700)]
Fix GDB build in infrun.c when configured with unit tests disabled

I noticed this while testing the GDB in the context of the upcoming
GDB 10 release branching, because part of the process involves setting
development to False, which in turn changes the default for including
unittest to false as well. As a result, without this patch, we get
compilation errors in infrun.c such as:

    infrun.c:9219:5: error: `scoped_mock_context' was not declared in this scope

This patch fixes it by bracketing the unitttest in namespace selftest
with an #if GDB_SELF_TEST.

gdb/ChangeLog:

        * infrun.c (namespace selftests): Only define #if GDB_SELF_TEST.

Tested on x86_64-linux, with and without self-tests.

4 years agoelf: Add -z unique-symbol to avoid duplicated local symbol names
H.J. Lu [Sat, 12 Sep 2020 12:37:30 +0000 (05:37 -0700)]
elf: Add -z unique-symbol to avoid duplicated local symbol names

The symbol string table in the .symtab section is optional and cosmetic.
The contents of the .symtab section have no impact on run-time execution.
The symbol names in the symbol string table help distinguish addresses at
different locations.  Add a linker option, -z unique-symbol, to avoid
duplicated local symbol names in the symbol string table.

This feature was well received by the livepatch maintainers.  It not only
solves the duplicated local symbol name problem, but also would allow
livepatch to more precisely locate duplicate symbols in general for
patching.

bfd/

PR ld/26391
* elflink.c (elf_final_link_info): Add local_hash_table.
(local_hash_entry): New.
(local_hash_newfunc): Likewise.
(elf_link_output_symstrtab): Append ".COUNT" to duplicated local
symbols.
(bfd_elf_final_link): Initialize and free local_hash_table for
"-z unique-symbol".

include/

PR ld/26391
* bfdlink.h (bfd_link_info): Add unique_symbol.

ld/

PR ld/26391
* NEWS: Mention "-z unique-symbol".
* emultempl/elf.em (gld${EMULATION_NAME}_handle_option): Handle
"-z unique-symbol" and "-z nounique-symbol".
* ld.texi: Document "-z unique-symbol" and "-z nounique-symbol".
* lexsup.c (elf_static_list_options): Add "-z unique-symbol" and
"-z nounique-symbol".
* testsuite/ld-elf/elf.exp: Add PR ld/26391 tests.
* testsuite/ld-elf/pr26391.nd: New file.
* testsuite/ld-elf/pr26391.out: Likewise.
* testsuite/ld-elf/pr26391a.c: Likewise.
* testsuite/ld-elf/pr26391b.c: Likewise.
* testsuite/ld-elf/pr26391c.c: Likewise.
* testsuite/ld-elf/pr26391d.c: Likewise.

4 years agoAutomatic date update in version.in
GDB Administrator [Sat, 12 Sep 2020 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoAdd bfloat16 support for AVX512 register view.
Felix Willgerodt [Thu, 10 Sep 2020 12:29:53 +0000 (14:29 +0200)]
Add bfloat16 support for AVX512 register view.

This adds support for the bfloat16 datatype, which can be seen as a short
version of FP32, skipping the least significant 16 bits of the mantissa.
Since the datatype is currently only supported by the AVX512 registers,
the printing of bfloat16 values is only supported for xmm, ymm and zmm
registers.

gdb/ChangeLog:
2020-09-11  Moritz Riesterer  <moritz.riesterer@intel.com>
    Felix Willgerodt  <Felix.Willgerodt@intel.com>

* gdbarch.sh: Added bfloat16 type.
* gdbarch.c: Regenerated.
* gdbarch.h: Regenerated.
* gdbtypes.c (floatformats_bfloat16): New struct.
(gdbtypes_post_init): Add builtin_bfloat16.
* gdbtypes.h (struct builtin_type) <builtin_bfloat16>: New member.
(floatformats_bfloat16): New struct.
* i386-tdep.c (i386_zmm_type): Add field "v32_bfloat16"
(i386_ymm_type): Add field "v16_bfloat16"
(i386_gdbarch_init): Add set_gdbarch_bfloat16_format.
* target-descriptions.c (make_gdb_type): Add case TDESC_TYPE_BFLOAT16.
* gdbsupport/tdesc.cc (tdesc_predefined_types): New member bfloat16.
* gdbsupport/tdesc.h (tdesc_type_kind): New member TDESC_TYPE_BFLOAT16.
* features/i386/64bit-avx512.xml: Add bfloat16 type.
* features/i386/64bit-avx512.c: Regenerated.
* features/i386/64bit-sse.xml: Add bfloat16 type.
* features/i386/64bit-sse.c: Regenerated.

gdb/testsuite/ChangeLog:
2020-09-11  Moritz Riesterer  <moritz.riesterer@intel.com>
    Felix Willgerodt  <Felix.Willgerodt@intel.com>

* x86-avx512bf16.c: New file.
* x86-avx512bf16.exp: Likewise.
* lib/gdb.exp (skip_avx512bf16_tests): New function.

4 years agoi386-tdep: Fix naming in zmm and ymm type descriptions.
Felix Willgerodt [Thu, 10 Sep 2020 12:29:52 +0000 (14:29 +0200)]
i386-tdep: Fix naming in zmm and ymm type descriptions.

gdb/Changelog:
2020-07-02  Felix Willgerodt  <felix.willgerodt@intel.com>

* i386-tdep.c (i386_zmm_type): Fix field names.
(i386_ymm_type): Fix field names.

4 years agoSync include, libiberty with GCC.
Felix Willgerodt [Thu, 10 Sep 2020 12:29:51 +0000 (14:29 +0200)]
Sync include, libiberty with GCC.

include:
2020-09-10  Felix Willgerodt  <felix.willgerodt@intel.com>

    Sync with GCC
    2020-08-17  Felix Willgerodt  <felix.willgerodt@intel.com>

    * floatformat.h (floatformat_bfloat16_big): New.
    (floatformat_bfloat16_little): New.

libiberty:
2020-09-10  Felix Willgerodt  <felix.willgerodt@intel.com>

    Sync with GCC
    2020-08-17  Felix Willgerodt  <felix.willgerodt@intel.com>

    * floatformat.c (floatformat_bfloat16_big): New.
    (floatformat_bfloat16_little): New.

4 years agogas: Don't error when .debug_line already exists, unless .loc was used
Mark Wielaard [Mon, 7 Sep 2020 12:25:25 +0000 (14:25 +0200)]
gas: Don't error when .debug_line already exists, unless .loc was used

When -g was used to generate DWARF gas would error out when a .debug_line
already exists. But when a .debug_info section already exists it would
simply skip generating one without warning or error. Do the same for
.debug_line. It is only an error when the user explicitly uses .loc
directives and also generates the .debug_line table itself.

The tests are unfortunately arch specific because the line table is only
generated when actual instructions have been emitted. Use i386 because
that is probably the most used architecture. Before this patch the new
dwarf-line-2 testcase would fail, with this patch it succeeds (and doesn't
try to add its own line table).

gas/ChangeLog:

    * as.texi (-g): Explicitly mention when .debug_info and .debug_line
    are generated for the DWARF format.
    (Loc): Add that it is an error to both use a .loc directive and
    generate a .debug_line yourself.
    * dwarf2dbg.c (dwarf2_any_loc_directive_seen): New static variable.
    (dwarf2_directive_loc): Set dwarf2_any_loc_directive_seen to TRUE.
    (dwarf2_finish): Check dwarf2_any_loc_directive_seen before emitting
    an error. Only create .debug_line if it is empty (or doesn't exist).
    * testsuite/gas/i386/i386.exp: Add dwarf2-line-{1,2,3,4} when testing
    an elf target.
    * testsuite/gas/i386/dwarf2-line-{1,2,3,4}.{s,d,l}: New test files.

4 years agoCSKY: Change ISA flag's type to bfd_uint64_t and fix build error.
Cooper Qu [Fri, 11 Sep 2020 15:58:11 +0000 (23:58 +0800)]
CSKY: Change ISA flag's type to bfd_uint64_t and fix build error.

The previous patch missed one modification.
Following is the error message:
gas/config/tc-csky.c:806:5: error: 'CSKY_ARCH_804' undeclared here
(not in a function); did you mean 'CSKY_ARCH_807'?

include/
* opcode/csky.h (CSKYV1_ISA_E1): Convert to bfd_uint64_t type.
(CSKYV2_ISA_E1): Likewise.
(CSKYV2_ISA_1E2): Likewise.
(CSKYV2_ISA_2E3): Likewise.
(CSKYV2_ISA_3E7): Likewise.
(CSKYV2_ISA_7E10): Likewise.
(CSKYV2_ISA_3E3R1): Likewise.
(CSKYV2_ISA_3E3R2): Likewise.
(CSKYV2_ISA_10E60): Likewise.
(CSKYV2_ISA_3E3R3): Likewise.
(CSKY_ISA_TRUST): Likewise.
(CSKY_ISA_CACHE): Likewise.
(CSKY_ISA_NVIC): Likewise.
(CSKY_ISA_CP): Likewise.
(CSKY_ISA_MP): Likewise.
(CSKY_ISA_MP_1E2): Likewise.
(CSKY_ISA_JAVA): Likewise.
(CSKY_ISA_MAC): Likewise.
(CSKY_ISA_MAC_DSP): Likewise.
(CSKY_ISA_DSP): Likewise.
(CSKY_ISA_DSP_1E2): Likewise.
(CSKY_ISA_DSP_ENHANCE): Likewise.
(CSKY_ISA_DSPE60): Likewise.
(CSKY_ISA_FLOAT_E1): Likewise.
(CSKY_ISA_FLOAT_1E2): Likewise.
(CSKY_ISA_FLOAT_1E3): Likewise.
(CSKY_ISA_FLOAT_3E4): Likewise.
(CSKY_ISA_FLOAT_7E60): Likewise.
(CSKY_ISA_VDSP): Likewise.
(CSKY_ISA_VDSP_2): Likewise.
(CSKY_ARCH_804): Define.
(CSKY_ARCH_805): Define.
(CSKY_ARCH_800): Define.

4 years agoFix a segfault when creating an import library with 0 exports.
Jeremy Drake [Fri, 11 Sep 2020 16:51:16 +0000 (17:51 +0100)]
Fix a segfault when creating an import library with 0 exports.

PR 26588
* emultempl/pe.em (_finish): Only generate a import library if not
exporting relocs.
* emultempl/pep.em: Likewise.

4 years ago[gdb/testsuite] Kfail gdb.cp/ambiguous.exp FAILs for PR26602
Tom de Vries [Fri, 11 Sep 2020 13:56:44 +0000 (15:56 +0200)]
[gdb/testsuite] Kfail gdb.cp/ambiguous.exp FAILs for PR26602

Kfail these FAILs as caused by PR exp/26602:
...
FAIL: gdb.cp/ambiguous.exp: print x.x
FAIL: gdb.cp/ambiguous.exp: print n.x
FAIL: gdb.cp/ambiguous.exp: print j.x
FAIL: gdb.cp/ambiguous.exp: print jva1.x
FAIL: gdb.cp/ambiguous.exp: print jva2.x
FAIL: gdb.cp/ambiguous.exp: print (A1)j
FAIL: gdb.cp/ambiguous.exp: print (A1)jva1
...

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2020-09-11  Tom de Vries  <tdevries@suse.de>

PR exp/26602
* gdb.cp/ambiguous.exp: Add KFAILs for PR26602.

4 years agox86: Add NT_X86_CET note
H.J. Lu [Fri, 11 Sep 2020 12:51:53 +0000 (05:51 -0700)]
x86: Add NT_X86_CET note

Define NT_X86_CET which is the proposed note for x86 CET state to support
Intel CET in Linux kernel.  Double check it after Intel CET patches have
been merged into Linux kernel.

binutils/

* readelf.c (get_note_type): Support NT_X86_CET.

include/

* elf/common.h (NT_X86_CET): New.

4 years agoFix the debuglink following code to recursively load links found in the newly loaded...
Nick Clifton [Fri, 11 Sep 2020 12:30:38 +0000 (13:30 +0100)]
Fix the debuglink following code to recursively load links found in the newly loaded debug info.

PR 26595
* dwarf.c (load_separate_debug_info): Return NULL rather than
FALSE in error situations.
(load_separate_debug_file): Move code to load debug links to ...
(check_for_and_load_links): ... here.  New function.  Load
separate debug information pointed to by debuglink and
debugaltlink sections.  Recursively scan newly loaded debug
information for more links and load them too.

4 years agogdb/breakpoint: fix typo in help message of "set breakpoint condition-evaluation"
Tankut Baris Aktemur [Fri, 11 Sep 2020 11:50:09 +0000 (13:50 +0200)]
gdb/breakpoint: fix typo in help message of "set breakpoint condition-evaluation"

The options for the "breakpoint condition-evaluation" setting are
"host", "target", and "auto".  The help message mentions the option
"gdb" at one point instead of "host".  Fix this typo.  Also add a period.

gdb/ChangeLog:
2020-09-11  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

* breakpoint.c: Fix typo in the help message of the
"set breakpoint condition-evaluation" command.

4 years agogdb/testsuite: remove stale comment in gdb.base/bp-cmds-execution-x-script.exp
Tankut Baris Aktemur [Fri, 11 Sep 2020 11:40:41 +0000 (13:40 +0200)]
gdb/testsuite: remove stale comment in gdb.base/bp-cmds-execution-x-script.exp

Remove a stale command that is apparently forgotten after a copy-paste
from 'gdb.base/break-main-file-remove-fail.exp'.

gdb/testsuite/ChangeLog:
2020-09-11  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

* gdb.base/bp-cmds-execution-x-script.exp: Remove a stale comment.

4 years agoAutomatic date update in version.in
GDB Administrator [Fri, 11 Sep 2020 00:00:13 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoaarch64: Return an error on conditional branch to an undefined symbol
Siddhesh Poyarekar [Tue, 1 Sep 2020 08:55:52 +0000 (14:25 +0530)]
aarch64: Return an error on conditional branch to an undefined symbol

The fix in 7e05773767820b441b23a16628b55c98cb1aef46 introduced a PLT
for conditional jumps when the target symbol is undefined.  This is
incorrect because conditional branch relocations are not allowed to
clobber IP0/IP1 and hence, should not result in a dynamic relocation.

Revert that change and in its place, issue an error when the target
symbol is undefined.

bfd/

2020-09-10  Siddhesh Poyarekar  <siddesh.poyarekar@arm.com>

* elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Revert
changes in 7e05773767820b441b23a16628b55c98cb1aef46.  Set
error for undefined symbol in BFD_RELOC_AARCH64_BRANCH19 and
BFD_RELOC_AARCH64_TSTBR14 relocations.

ld/

2020-09-10  Siddhesh Poyarekar  <siddesh.poyarekar@arm.com>

* testsuite/ld-aarch64/emit-relocs-560.d: Expect error instead
of valid output.

4 years agold: Add more tests for --as-needed
H.J. Lu [Thu, 10 Sep 2020 14:52:03 +0000 (07:52 -0700)]
ld: Add more tests for --as-needed

Prior to

commit 1e3b96fd6cf0c7d018083994ad951ccf92aba582
Author: Alan Modra <amodra@gmail.com>
Date:   Fri Sep 4 13:54:21 2020 +0930

    Allow plugin syms to mark as-needed shared libs needed

when removing unused IR symbol references, ld didn't add unnecessary
DT_NEEDED libraries which may lead to undefined symbol reference in a
--as-needed library when the symbol is defined in a prior --as-needed
library and there is no reference in relocatable inputs.  This behavior
is desirable since it ensures that both lazy and non-lazy bindings work
the same way.  The problem is with --as-needed libraries, which happens
with and without LTO.  Now, the linker may add many unnecessary DT_NEEDED
libraries for IR inputs.

PR ld/26590
* testsuite/ld-elf/pr26590.err: New file.
* testsuite/ld-elf/pr26590a.c: Likewise.
* testsuite/ld-elf/pr26590b.c: Likewise.
* testsuite/ld-elf/pr26590c.c: Likewise.
* testsuite/ld-elf/pr26590d.c: Likewise.
* testsuite/ld-elf/shared.exp: Run ld/26590 tests.

4 years agoPR26597, FAIL: gdb.dlang/demangle.exp: _D8demangle4testFI5identZv
Alan Modra [Thu, 10 Sep 2020 14:16:11 +0000 (23:46 +0930)]
PR26597, FAIL: gdb.dlang/demangle.exp: _D8demangle4testFI5identZv

gcc commit 387d0773f3 changed the D demangler, with the following
commit log:

    libiberty: Add support for `in' and `in ref' storage classes.

    The storage class `in' is now a first-class citizen with its own mangle
    symbol, of which also permits `in ref'.  Previously, `in' was an alias
    to `const [scope]', which is a type constructor.

    The mangle symbol repurposed for this is `I', which was originally used
    by identifier types.  However, while TypeIdentifier is part of the
    grammar, it must be resolved to some other entity during the semantic
    passes, and so shouldn't appear anywhere in the mangled name.

    Old tests that are now no longer valid have been removed.

This patch makes the same changes to the gdb testsuite as were made to
the upstream gcc libiberty testsuite.

gdb/testsuite/
PR 26597
* gdb.dlang/demangle.exp: Update tests as per gcc commit 387d0773f3.

4 years agoAdd minimal and functional NetBSD/amd64 gdbserver
Kamil Rytarowski [Wed, 2 Sep 2020 17:35:42 +0000 (19:35 +0200)]
Add minimal and functional NetBSD/amd64 gdbserver

Implement the following functionality: create_inferior,
post_create_inferior, attach, kill, detach, mourn, join, thread_alive,
resume, wait, fetch_registers, store_registers, read_memory, write_memory,
request_interrupt, supports_read_auxv, read_auxv,
supports_hardware_single_step, sw_breakpoint_from_kind,
supports_z_point_type, insert_point, remove_point,
stopped_by_sw_breakpoint, supports_qxfer_siginfo, qxfer_siginfo,
supports_stopped_by_sw_breakpoint, supports_non_stop,
supports_multi_process, supports_fork_events, supports_vfork_events,
supports_exec_events, supports_disable_randomization,
supports_qxfer_libraries_svr4, qxfer_libraries_svr4,
supports_pid_to_exec_file, pid_to_exec_file, thread_name,
supports_catch_syscall.

The only CPU architecture supported: x86_64.

Implement only support for hardware assisted single step and
software breakpoint.

Implement support only for regular X86 registers, thus no FPU.

gdbserver/ChangeLog:

       * netbsd-low.cc: Add.
       * netbsd-low.h: Likewise.
       * netbsd-amd64-low.cc: Likewise.
       * Makefile.in (SFILES): Register "netbsd-low.cc", "netbsd-low.h",
       "netbsd-amd64-low.cc".
       * configure.srv: Add x86_64-*-netbsd*.

4 years agoSwitch local native code to gdb/nat shared functions
Kamil Rytarowski [Wed, 2 Sep 2020 17:32:54 +0000 (19:32 +0200)]
Switch local native code to gdb/nat shared functions

No functional change as the same functionality inlined in nbsd-nat.c
is offered in gdb/nat/netbsd-nat.c.

gdb/ChangeLog:

* nbsd-nat.c: Include "nat/netbsd-nat.h".
* (nbsd_nat_target::pid_to_exec_file)
(nbsd_nat_target::thread_alive, nbsd_nat_target::thread_name)
(nbsd_nat_target::post_startup_inferior)
(nbsd_nat_target::post_attach, nbsd_nat_target::xfer_partial)
(nbsd_add_threads): Switch local code to common gdb/nat functions.
* (nbsd_pid_to_cmdline): Call sysctl from the global namespace.
* (nbsd_thread_lister): Remove.

4 years agoAvoid double free in startup_inferior
Kamil Rytarowski [Wed, 2 Sep 2020 17:24:05 +0000 (19:24 +0200)]
Avoid double free in startup_inferior

Do not free the last execd pathname as it will be used in
prepare_resume_reply(), after attaching a client side.

gdb/ChangeLog:

* fork-inferior.c (startup_inferior): Avoid double free.

4 years agoAdd a common utility function to read and write siginfo_t in inferior
Kamil Rytarowski [Wed, 2 Sep 2020 17:21:19 +0000 (19:21 +0200)]
Add a common utility function to read and write siginfo_t in inferior

gdb/ChangeLog:

        * netbsd-nat.h (netbsd_nat::qxfer_siginfo): Add.
        * netbsd-nat.c (netbsd_nat::qxfer_siginfo): Likewise.

4 years agoAdd netbsd_nat::enable_proc_events in gdb/nat
Kamil Rytarowski [Wed, 2 Sep 2020 17:18:55 +0000 (19:18 +0200)]
Add netbsd_nat::enable_proc_events in gdb/nat

Add generic function to enable debugger events in a process.

gdb/ChangeLog:

        * netbsd-nat.h (netbsd_nat::enable_proc_events): Add.
* netbsd-nat.c: Include <sys/ptrace.h>.
* (netbsd_nat::enable_proc_events): Add.

4 years agoAdd gdb/nat common functions for listing threads
Kamil Rytarowski [Wed, 2 Sep 2020 17:13:19 +0000 (19:13 +0200)]
Add gdb/nat common functions for listing threads

Add netbsd_nat::netbsd_thread_lister a generic thread lister, used
internally in netbsd-nat.c, copied from gdb/nbsd-nat.c.

Add public extern functions for listing threads:
 * netbsd_nat::thread_alive
 * netbsd_nat::thread_name
 * netbsd_nat::for_each_thread

gdb/ChangeLog:

* netbsd-nat.h: Include "gdbsupport/function-view.h".
* (netbsd_nat::thread_alive, netbsd_nat::thread_name)
(netbsd_nat::for_each_thread): Add.
* netbsd-nat.c: Include "gdbsupport/common-defs.h" and
"gdbsupport/common-debug.h".
* (netbsd_nat::netbsd_thread_lister)
(netbsd_nat::thread_alive, netbsd_nat::thread_name)
(netbsd_nat::for_each_thread): Add.

4 years agoAdd netbsd_nat::pid_to_exec_file
Kamil Rytarowski [Wed, 2 Sep 2020 17:08:37 +0000 (19:08 +0200)]
Add netbsd_nat::pid_to_exec_file

gdb/ChangeLog:

        * netbsd-nat.h: Include <unistd.h>.
        * (netbsd_nat::pid_to_exec_file): Add.
        * netbsd-nat.c: Include <sys/types.h> and <sys/sysctl.h>.
        * (netbsd_nat::pid_to_exec_file) Add.

4 years agoBuild nat/netbsd-nat.o for the NetBSD native target
Kamil Rytarowski [Wed, 2 Sep 2020 17:02:13 +0000 (19:02 +0200)]
Build nat/netbsd-nat.o for the NetBSD native target

gdb/ChangeLog:

* configure.nat (NATDEPFILES): Add nat/netbsd-nat.o when needed.

4 years agoRegister a placeholder for NetBSD shared functions in gdb/nat
Kamil Rytarowski [Wed, 2 Sep 2020 16:53:41 +0000 (18:53 +0200)]
Register a placeholder for NetBSD shared functions in gdb/nat

gdb/ChangeLog:

* netbsd-nat.h: New file.
* netbsd-nat.c: Likewise.

4 years agoAdd handle_eintr to wrap EINTR handling in syscalls
Kamil Rytarowski [Wed, 2 Sep 2020 16:20:53 +0000 (18:20 +0200)]
Add handle_eintr to wrap EINTR handling in syscalls

gdbsupport/ChangeLog:

* eintr.h: New file.

4 years agoStop symbols generated by the annobin gcc plugin from breaking the disassembly of...
Nick Clifton [Thu, 10 Sep 2020 12:23:11 +0000 (13:23 +0100)]
Stop symbols generated by the annobin gcc plugin from breaking the disassembly of PowerPC binaries.

* ppc-dis.c (ppc_symbol_is_valid): New function.  Returns false
for hidden, local, no-type symbols.
(disassemble_init_powerpc): Point the symbol_is_valid field in the
info structure at the new function.

4 years agoCSKY: Enable extend lrw by default for CK802, CK803 and CK860.
Cooper Qu [Thu, 10 Sep 2020 09:37:05 +0000 (17:37 +0800)]
CSKY: Enable extend lrw by default for CK802, CK803 and CK860.

gas/
* config/tc-csky.c (md_begin): Enable extend lrw by default for
CK802, CK803 and CK860.

4 years agoCSKY: Add L2Cache instructions for CK860.
Cooper Qu [Thu, 10 Sep 2020 09:36:51 +0000 (17:36 +0800)]
CSKY: Add L2Cache instructions for CK860.

opcodes/
* csky-opc.h (csky_v2_opcodes): Add L2Cache instructions.
* testsuite/gas/csky/cskyv2_ck860.d : Adjust to icache.iva
opcode fixing.

4 years agoCSKY: Add new arches while refine the cpu option process.
Cooper Qu [Thu, 10 Sep 2020 09:36:24 +0000 (17:36 +0800)]
CSKY: Add new arches while refine the cpu option process.

Add arches CK804, CK805 and CK800. CK800 is an special arch which
support all instructions for CSKYV2. Refine the cpu tables to
simplify adding a new cpu.

Co-Authored-By: Lifang Xia <lifang_xia@c-sky.com>
gas/
* config/tc-csky.c (struct csky_cpu_info): Add new members
isa_flag, features and ver.
(struct csky_cpu_feature): New.
(struct csky_cpu_version): New.
(CSKY_FEATURE_MAX): Define.
(CSKY_CPU_REVERISON_MAX): Define.
(FEATURE_DSP_EXT, FEATURE_DSP, FEATURE_MMU, FEATURE_VDSP,
 FEATURE_FLOAT, FEATURE_TRUST, FEATURE_JAVA, FEATURE_SHIELD):
Define, each standard one collection of instructions.
(CSKY_FEATURES_DEF_NULL, CSKY_FEATURES_DEF_e,
 CSKY_FEATURES_DEF_t, CSKY_FEATURES_DEF_f, CSKY_FEATURES_DEF_v,
 CSKY_FEATURES_DEF_ef, CSKY_FEATURES_DEF_jt,
 CSKY_FEATURES_DEF_efht, CSKY_FEATURES_DEF_efv,
 CSKY_FEATURES_DEF_eft, CSKY_FEATURES_DEF_d,
 CSKY_FEATURES_DEF_df, CSKY_FEATURES_DEF_ft,
 CSKY_FEATURES_DEF_tv, CSKY_FEATURES_DEF_fv,
 CSKY_FEATURES_DEF_dft, CSKY_FEATURES_DEF_dfv,
 CSKY_FEATURES_DEF_ftv, CSKY_FEATURES_DEF_eftv): Define,
the features combination used by cpu.
(CSKY_CPU_REVERISON_r0p0, CSKY_CPU_REVERISON_r1p0,
 CSKY_CPU_REVERISON_r2p0, CSKY_CPU_REVERISON_r3p0,
 CSKY_CPU_REVERISON_RESERVED, CSKY_CPU_REVERISON_R3):
Define, version information used by cpu.
(csky_cpus): Refine, and add CK804, CK805 and CK800.
(parse_cpu): Refine.
(parse_arch): Refine.
(md_show_usage): Refine.
(md_begin): Refine.

include/
* opcode/csky.h (CSKY_ARCH_804): Define.
(CSKY_ARCH_805): Define.
(CSKY_ARCH_800): Define.

4 years agoRe: PR26580, Size and alignment of commons vs as-needed shared lib
Alan Modra [Thu, 10 Sep 2020 09:16:14 +0000 (18:46 +0930)]
Re: PR26580, Size and alignment of commons vs as-needed shared lib

Some MIPS targets, for reasons I didn't analyse, use the larger common
symbol in a shared lib rather than a smaller common in an executable.
That doesn't seem unreasonable, so allow that to pass for pr26580-2.

bfin-elf complains about not supporting copy relocs, but it's quite
silly to want a copy reloc for common symbols, so leave the fail
there.  mn10300-elf and score-elf both fail the test with "PHDR
segment not covered by LOAD segment".  Other tests fail similarly so
one more doesn't hurt.  The failure is a consequence of supporting
dynamic objects but setting EMBEDDED in ld scripts.

PR 26580
* testsuite/ld-elf/pr26580-2.sd: Accept undefined symbol.

4 years agoRe: lto-18 test
Alan Modra [Thu, 10 Sep 2020 07:40:57 +0000 (17:10 +0930)]
Re: lto-18 test

Extend the test a little to archives, not that we expect this to
fail.  Nor has the lto-18 test ever failed without -flto.

* testsuite/ld-plugin/lto-18b.c (select): Remove.
* testsuite/ld-plugin/lto-18c.c (select): Remove.
* testsuite/ld-plugin/lto.exp: Build archives for lto-18 too,
and run static versions of the test.

4 years agoFix compile time warnings when building for the CSKY target on a 32-bit host.
Nick Clifton [Thu, 10 Sep 2020 08:58:15 +0000 (09:58 +0100)]
Fix compile time warnings when building for the CSKY target on a 32-bit host.

incldue * opcode/csky.h (CSKY_ISA_FLOAT_7E60): Use a long long type for
this value.

opcodes * csky-dis.c (csky_output_operand): Coerce the immediate values to
long before printing.

4 years agosprintf arg overlaps destination
Alan Modra [Thu, 10 Sep 2020 04:42:52 +0000 (14:12 +0930)]
sprintf arg overlaps destination

* csky-dis.c (csky_output_operand): Don't sprintf str to itself.

4 years agoAutomatic date update in version.in
GDB Administrator [Thu, 10 Sep 2020 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoFix latent bug in ada-lang.c:remove_extra_symbols
Tom Tromey [Tue, 16 Jun 2020 17:28:23 +0000 (11:28 -0600)]
Fix latent bug in ada-lang.c:remove_extra_symbols

I believe ada-lang.c:remove_extra_symbols has a latent bug.  This
function loops over a vector of symbols, removing duplicates according
to some criteria.

At the end of the loop it does:

      if (remove_p)
syms->erase (syms->begin () + i);
      i += 1;

However, this seems wrong to me -- when removing the i'th element,
this code still increments "i", thus skipping an element.

At first I thought this was a regression from the patches to remove
cleanups from ada-lang.c (this was when std::vector was introduced);
but I found that instead the bug seems to be older:

       if (remove_p)
         {
           for (j = i + 1; j < nsyms; j += 1)
             syms[j - 1] = syms[j];
           nsyms -= 1;
         }

       i += 1;

No test, as I don't know how to write one.

As this is Ada-specific, and was already reviewed internally by Joel,
I am checking it in.

gdb/ChangeLog
2020-09-09  Tom Tromey  <tromey@adacore.com>

* ada-lang.c (remove_extra_symbols): Do not increment when
removing an element

4 years agoFix thinko in the code to check coff archive elements.
Nick Clifton [Wed, 9 Sep 2020 14:00:55 +0000 (15:00 +0100)]
Fix thinko in the code to check coff archive elements.

* cofflink.c (coff_link_check_archive_element): Move the check for
coff type input to the start of the function.

4 years agopower10 on ppc32
Alan Modra [Wed, 9 Sep 2020 12:40:47 +0000 (22:10 +0930)]
power10 on ppc32

We don't support power10 on ppc32, mainly because some instructions
have 34-bit fields for which we don't have relocations on ppc32.
If you try to assemble typical code, you'll see errors saying
"reloc ... not supported by object file format".  Also, on 32-bit
hosts with binutils configured without a 64-bit bfd, you'll see errors
saying "bignum invalid" when using large offsets.  But let's not kill
output of prefix insns entirely on 32-bit hosts.

* config/tc-ppc.c (md_assemble): Emit prefix insn by parts when
valueT is smaller than 64 bits.

4 years agoCSKY: Change mvtc and mulsw's ISA flag.
Cooper Qu [Mon, 7 Sep 2020 09:25:14 +0000 (17:25 +0800)]
CSKY: Change mvtc and mulsw's ISA flag.

gas/
* config/tc-csky.c (CSKYV2_ISA_DSP): CSKY_ISA_DSPE60.
(CSKY_ISA_860): Likewise.

include/
* opcode/csky.h (CSKY_ISA_DSPE60): Define.

opcodes/
* csky-opc.h (csky_v2_opcodes): Change mvtc and mulsw's
ISA flag.

4 years agoCSKY: Support option -mfloat-abi.
Cooper Qu [Mon, 7 Sep 2020 09:25:02 +0000 (17:25 +0800)]
CSKY: Support option -mfloat-abi.

The option corresponds to GCC to control the float calling conversion,
and the value will be stored in .csky.attributes section.

Co-Authored-By: Lifang Xia <lifang_xia@c-sky.com>
gas/
* config/tc-csky.c (float_abi): New.
(md_longopts): Add mfloat-abi.
(struct sky_option_value_table): New.
(csky_float_abis): New, the possible values for -mfloat-abi.
(parse_float_abi): New funtion.
(md_show_usage): Show help information for -mfloat-abi.
(set_csky_attribute): Store float-abi value.

4 years agoCSKY: Add FPUV3 instructions, which supported by ck860f.
Cooper Qu [Mon, 7 Sep 2020 09:24:11 +0000 (17:24 +0800)]
CSKY: Add FPUV3 instructions, which supported by ck860f.

Co-Authored-By: Lifang Xia <lifang_xia@c-sky.com>
gas/
* config/tc-csky.c (float_work_fpuv3_fmovi): New function,
helper function to encode fpuv3 fmovi instructions.
(float_work_fpuv3_fstore): New function.
(struct literal): Add new member 'offset'.
(csky_cpus): New cpu CK860f.
(enter_literal): Return literal pool pointer instead of offset.
(parse_rt): Adjust the change of enter_literal.
(parse_rtf): Likewise.
(v1_work_lrw): Likewise.
(v1_work_jbsr): Likewise.
(v2_work_lrw): Likewise.
(v2_work_jbsr): Likewise.
(v2_work_jsri): Likewise.
(vdsp_work_vlrw): Likewise.
(is_freglist_legal): Add handler for FPUV3.
(parse_type_freg): Likewise.
(is_imm_within_range): Set e.X_add_number if it is a signed and
negtive number.
(get_operand_value): Add handler for OPRND_TYPE_IMM9b,
OPRND_TYPE_HFLOAT_FMOVI, OPRND_TYPE_SFLOAT_FMOVI
and OPRND_TYPE_DFLOAT_FMOVI.
(float_to_half): Convert float number to harf float.

opcodes/
* csky-dis.c (csky_output_operand): Add handlers for
OPRND_TYPE_HFLOAT_FMOVI, OPRND_TYPE_SFLOAT_FMOVI and
OPRND_TYPE_DFLOAT_FMOVI. Refine OPRND_TYPE_FREGLIST_DASH
to support FPUV3 instructions.
* csky-opc.h (enum operand_type): New enum OPRND_TYPE_IMM9b,
OPRND_TYPE_HFLOAT_FMOVI, OPRND_TYPE_SFLOAT_FMOVI and
OPRND_TYPE_DFLOAT_FMOVI.
(OPRND_MASK_4_5, OPRND_MASK_6, OPRND_MASK_6_7, OPRND_MASK_6_8,
 OPRND_MASK_7, OPRND_MASK_7_8, OPRND_MASK_17_24,
 OPRND_MASK_20, OPRND_MASK_20_21, OPRND_MASK_20_22,
 OPRND_MASK_20_23, OPRND_MASK_20_24, OPRND_MASK_20_25,
 OPRND_MASK_0_3or5_8, OPRND_MASK_0_3or6_7, OPRND_MASK_0_3or25,
 OPRND_MASK_0_4or21_24, OPRND_MASK_5or20_21,
 OPRND_MASK_5or20_22, OPRND_MASK_5or20_23, OPRND_MASK_5or20_24,
 OPRND_MASK_5or20_25, OPRND_MASK_8_9or21_25,
 OPRND_MASK_8_9or16_25, OPRND_MASK_4_6or20, OPRND_MASK_5_7or20,
 OPRND_MASK_4_5or20or25, OPRND_MASK_4_6or20or25,
 OPRND_MASK_4_7or20or25, OPRND_MASK_6_9or17_24,
 OPRND_MASK_6_7or20, OPRND_MASK_6or20, OPRND_MASK_7or20,
 OPRND_MASK_5or8_9or16_25, OPRND_MASK_5or8_9or20_25): Define.
(csky_v2_opcodes): Add FPUV3 instructions.

include/
* opcode/csky.h (CSKY_ISA_FLOAT_7E60): Define.

4 years agoPR26578, memory leak in parse_gnu_debugaltlink
Alan Modra [Wed, 9 Sep 2020 07:08:36 +0000 (16:38 +0930)]
PR26578, memory leak in parse_gnu_debugaltlink

The associated check function doesn't do anything with its "data"
param, so nothing to adjust there.

PR 26578
* dwarf.c (parse_gnu_debugaltlink): Don't alloc build_id_data.
(load_separate_debug_files): Use a stack var for build_id_data.

4 years agolto-18 test
Alan Modra [Wed, 9 Sep 2020 02:46:23 +0000 (12:16 +0930)]
lto-18 test

Demonstrates a reason to use IR symbols when deciding an --as-needed
library should be loaded.

* testsuite/ld-plugin/lto-18a.c,
* testsuite/ld-plugin/lto-18b.c,
* testsuite/ld-plugin/lto-18c.c,
* testsuite/ld-plugin/lto-18d.c,
* testsuite/ld-plugin/lto-18.out: New test.
* testsuite/ld-plugin/lto.exp: Run it.

4 years agoAutomatic date update in version.in
GDB Administrator [Wed, 9 Sep 2020 00:00:13 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoRe: MSP430: Support relocations for subtract expressions in .uleb128 directives
Alan Modra [Tue, 8 Sep 2020 23:08:48 +0000 (08:38 +0930)]
Re: MSP430: Support relocations for subtract expressions in .uleb128 directives

Put the prototype where it won't disappear on the next regen of libbfd.h.

* libbfd-in.h (_bfd_write_unsigned_leb128): Declare.
* libbfd.h: Regenerate.

4 years agobpf: simulator: correct div, mod insn semantics
David Faust [Tue, 8 Sep 2020 18:39:07 +0000 (11:39 -0700)]
bpf: simulator: correct div, mod insn semantics

The div and mod eBPF instructions are unsigned, but the semantic
specification for the simulator incorrectly used signed operators.
Correct them to unsigned versions, and correct the ALU tests in
the simulator (which incorrectly assumed signed semantics).

Tested in bpf-unknown-none.

cpu/ChangeLog:
2020-09-08  David Faust  <david.faust@oracle.com>

* bpf.cpu (define-alu-instructions): Correct semantic operators
for div, mod to unsigned versions.

sim/ChangeLog:
2020-09-08  David Faust  <david.faust@oracle.com>

* bpf/sem-be.c: Regenerate.
* bpf/sem-le.c: Likewise.

sim/testsuite/ChangeLog:
2020-09-08  David Faust  <david.faust@oracle.com>

* sim/bpf/alu.s: Correct div and mod tests.
* sim/bpf/alu32.s: Likewise.

4 years agoPass --disable-reloc-section on PE targets for PR 25662 test
H.J. Lu [Tue, 8 Sep 2020 17:01:45 +0000 (10:01 -0700)]
Pass --disable-reloc-section on PE targets for PR 25662 test

Pass --disable-reloc-section on PE targets for PR 25662 test since

commit 514b4e191d5f46de8e142fe216e677a35fa9c4bb

Author: Jeremy Drake <sourceware-bugzilla@jdrake.com>
Date:   Thu Aug 27 12:58:27 2020 +0100

    Change the default characteristics of DLLs built by the linker to more secure settings.

defaulted to --enable-reloc-section.

PR ld/26587
* testsuite/binutils-all/objcopy.exp: Pass --disable-reloc-section
to ld on PE targets for PR 25662 test.

4 years agoDo not adjust mtime timezone on Windows
Tom Tromey [Tue, 8 Sep 2020 16:20:44 +0000 (10:20 -0600)]
Do not adjust mtime timezone on Windows

PR win32/25302 notes that gdb will crash when trying to "run" even a
simple program on Windows.  The essential bug here is that the BFD
cache can easily be corrupted -- I have sent a separate patch for
that.

The particular reason that the cache is corrupted on Windows is that
gnulib overrides "stat" to make it do timezone adjustment -- but BFD
does not use this version of stat.  The difference here triggers the
latent cache bug, but can also cause other bugs as well; in particular
it can cause spurious warnings about source files being newer.

This patch simply removes the stat override on mingw, making gnulib
and BFD agree.

I tested this by backing out the local AdaCore changes to work around
this bug and then verifying that I could reproduce it.  Then, I
applied this patch and verified that "run" works again.

2020-09-08  Tom Tromey  <tromey@adacore.com>

PR win32/25302:
* update-gnulib.sh: Apply stat patch.
* patches/0001-use-windows-stat: New file.
* import/m4/stat.m4: Update.
* configure: Rebuild.

4 years agoFix uninitialized warning in gdb_bfd_open
Tom Tromey [Tue, 8 Sep 2020 16:35:22 +0000 (10:35 -0600)]
Fix uninitialized warning in gdb_bfd_open

The previous patch introduced an uninitialized warning in
gdb_bfd_open.  The problem was that "abfd" was being used without
being initialized.

This patch fixes the problem by calling bfd_fopen in the branch where
"fstat" has failed.

gdb/ChangeLog
2020-09-08  Tom Tromey  <tromey@adacore.com>

* gdb_bfd.c (gdb_bfd_open): Call bfd_fopen when fstat fails.

4 years agoAvoid hash table corruption in gdb_bfd.c
Tom Tromey [Tue, 8 Sep 2020 16:13:51 +0000 (10:13 -0600)]
Avoid hash table corruption in gdb_bfd.c

gdb caches BFDs that come from ordinary files.  This code turns out to
have a bug where the hash table can become corrupted, causing gdb to
crash.

When gdb_bfd_open opens the BFD, it uses fstat to get the BFD's mtime.
This is used when inserting the entry into gdb_bfd_cache.  Then, the
function creates the gdb_bfd_data object as a side effect of calling
new_reference.  This object is used when finding objects in the hash
table, and its constructor uses bfd_get_mtime.  So, if the file
changes between the time the BFD is put into the cache and the time
that this object is created, the hash table will be incorrect.  When
the BFD is later deleted, its entry in the hash table will not be
found, and at this point the hash table will point to invalid memory.

This patch fixes the bug by ensuring that the mtime, and other
relevant attributes comgin from stat, that are used for insertion are
also used when creating the gdb_bfd_data.

This obsoletes an earlier patch that had split this into two parts
(surrounding a patch to use bfd_stat more consistently).  This version
merges the two patches, in the interest of correctness.

gdb/ChangeLog
2020-09-08  Tom Tromey  <tromey@adacore.com>

PR win32/25302:
* gdb_bfd.c (gdb_bfd_data): Add "st" parameter.
(gdb_bfd_init_data): New function.
(gdb_bfd_open, gdb_bfd_ref): Use gdb_bfd_init_data.

4 years agoMSP430: Support relocations for subtract expressions in .uleb128 directives
Jozef Lawrynowicz [Tue, 8 Sep 2020 15:13:48 +0000 (16:13 +0100)]
MSP430: Support relocations for subtract expressions in .uleb128 directives

Link-time relaxations of branches are common for MSP430, given that GCC
can generate pessimal branch instructions, and the
-mcode-region=either/-mdata-region=either options to shuffle sections
can further change the type of branch instruction required.

These relaxations can result in invalid code when .uleb128
directives, used in the .gcc_except_table section, are used to calculate
the distance between two labels. A value for the .uleb128 directive is
calculated at assembly-time, and can't be updated at link-time, even if
relaxation causes the distance between the labels to change.

This patch adds relocations for subtract expressions in .uleb128
directives, to allow the linker to re-calculate the value of these
expressions after relaxation has been performed.

bfd/ChangeLog:
* bfd-in2.h (bfd_reloc_code_real): Add
BFD_RELOC_MSP430_{SET,SUB}_ULEB128.
* elf32-msp430.c (msp430_elf_ignore_reloc): New.
(elf_msp430_howto_table): Add R_MSP430{,X}_GNU_{SET,SUB}_ULEB128.
(msp430_reloc_map): Add R_MSP430_GNU_{SET,SUB}_ULEB128.
(msp430x_reloc_map): Add R_MSP430X_GNU_{SET,SUB}_ULEB128.
(write_uleb128): New.
(msp430_final_link_relocate): Handle R_MSP430{,X}_GNU_{SET,SUB}_ULEB128.
* libbfd.c (_bfd_write_unsigned_leb128): New.
* libbfd.h (_bfd_write_unsigned_leb128): New prototype.
Add BFD_RELOC_MSP430_{SET,SUB}_ULEB128.
* reloc.c: Document BFD_RELOC_MSP430_{SET,SUB}_ULEB128.

binutils/ChangeLog:
* readelf.c (target_specific_reloc_handling): Handle
R_MSP430{,X}_GNU_{SET,SUB}_ULEB128.

gas/ChangeLog:
* config/tc-msp430.c (msp430_insert_uleb128_fixes): New.
(msp430_md_end): Call msp430_insert_uleb128_fixes.

include/ChangeLog:
* elf/msp430.h (elf_msp430_reloc_type): Add
R_MSP430_GNU_{SET,SUB}_ULEB128.
(elf_msp430x_reloc_type): Add R_MSP430X_GNU_{SET,SUB}_ULEB128.

ld/ChangeLog:
* testsuite/ld-msp430-elf/msp430-elf.exp: Run new tests.
* testsuite/ld-msp430-elf/uleb128.s: New test.
* testsuite/ld-msp430-elf/uleb128_430.d: New test.
* testsuite/ld-msp430-elf/uleb128_430x.d: New test.

4 years agoaarch64: Add -mcpu option for Cortex-R82
Alex Coplan [Tue, 8 Sep 2020 13:22:59 +0000 (14:22 +0100)]
aarch64: Add -mcpu option for Cortex-R82

This adds support for the Arm Cortex-R82 CPU in AArch64 GAS. For more
information about this processor, see [0].

[0] : https://developer.arm.com/ip-products/processors/cortex-r/cortex-r82

gas/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* config/tc-aarch64.c (aarch64_cpus): Add Cortex-R82.
* doc/c-aarch64.texi: Document -mcpu=cortex-r82.

4 years agoaarch64: Add support for Armv8-R system registers
Alex Coplan [Tue, 8 Sep 2020 13:21:44 +0000 (14:21 +0100)]
aarch64: Add support for Armv8-R system registers

This patch adds support for the system registers introduced in Armv8-R
AArch64.

gas/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* config/tc-aarch64.c (parse_sys_reg): Also pass sysreg name to
validation function.
(parse_sys_ins_reg): Likewise.
(print_operands): Pass CPU features to aarch64_print_operand().
* testsuite/gas/aarch64/v8-r-bad-sysregs.d: New test.
* testsuite/gas/aarch64/v8-r-bad-sysregs.l: Error output.
* testsuite/gas/aarch64/v8-r-bad-sysregs.s: Input.
* testsuite/gas/aarch64/v8-r-sysregs-need-arch.d: New test.
* testsuite/gas/aarch64/v8-r-sysregs-need-arch.l: Error output.
* testsuite/gas/aarch64/v8-r-sysregs.d: New test.
* testsuite/gas/aarch64/v8-r-sysregs.s: Input for previous two tests.

include/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* opcode/aarch64.h (aarch64_sys_ins_reg_supported_p): Also take
system register name in order to simplify validation for v8-R.
(aarch64_print_operand): Also take CPU feature set, as disassembly for
system registers now depends on arch variant.

opcodes/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* aarch64-dis.c (print_operands): Pass CPU features to
aarch64_print_operand().
* aarch64-opc.c (aarch64_print_operand): Use CPU features to determine
preferred disassembly of system registers.
(SR_RNG): Refactor to use new SR_FEAT2 macro.
(SR_FEAT2): New.
(SR_V8_1_A): New.
(SR_V8_4_A): New.
(SR_V8_A): New.
(SR_V8_R): New.
(SR_EXPAND_ELx): New.
(SR_EXPAND_EL12): New.
(aarch64_sys_regs): Specify which registers are only on
A-profile, add R-profile system registers.
(ENC_BARLAR): New.
(PRBARn_ELx): New.
(PRLARn_ELx): New.
(aarch64_sys_ins_reg_supported_p): Reject EL3 registers for
Armv8-R AArch64.

4 years agoaarch64: Add support for Armv8-R DFB alias
Alex Coplan [Tue, 8 Sep 2020 13:18:38 +0000 (14:18 +0100)]
aarch64: Add support for Armv8-R DFB alias

This adds support for the DFB alias introduced in Armv8-R AArch64.

gas/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* testsuite/gas/aarch64/dfb.d: New test.
* testsuite/gas/aarch64/dfb.s: Input.

opcodes/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* aarch64-tbl.h (aarch64_feature_v8_r): New.
(ARMV8_R): New.
(V8_R_INSN): New.
(aarch64_opcode_table): Add dfb.
* aarch64-opc-2.c: Regenerate.
* aarch64-asm-2.c: Regenerate.
* aarch64-dis-2.c: Regenerate.

4 years agoaarch64: Add base support for Armv8-R
Alex Coplan [Tue, 8 Sep 2020 13:13:45 +0000 (14:13 +0100)]
aarch64: Add base support for Armv8-R

This patch adds the basic infrastructure needed to support Armv8-R in
AArch64 binutils: new command-line flags, new feature bits, a new BFD
architecture, and support for differentiating between architecture
variants in the disassembler.

The new command-line options added by this patch are -march=armv8-r in
GAS and -m aarch64:armv8-r in objdump.

The disassembler support is necessary since Armv8-R AArch64 introduces a
system register (VSCTLR_EL2) which shares an encoding with a different
system register (TTBR0_EL2) in Armv8-A. This also allows us to use the
correct preferred disassembly for the new DFB alias introduced in
Armv8-R.

bfd/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* archures.c (bfd_mach_aarch64_8R): New.
* bfd-in2.h: Regenerate.
* cpu-aarch64.c (bfd_aarch64_arch_v8_r): New.
(bfd_aarch64_arch_ilp32): Update tail pointer.

gas/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* config/tc-aarch64.c (aarch64_archs): Add armv8-r.
* doc/c-aarch64.texi: Document -march=armv8-r.

include/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* opcode/aarch64.h (AARCH64_FEATURE_V8_A): New.
(AARCH64_FEATURE_V8_R): New.
(AARCH64_ARCH_V8): Include new A-profile feature bit.
(AARCH64_ARCH_V8_R): New.

opcodes/ChangeLog:

2020-09-08  Alex Coplan  <alex.coplan@arm.com>

* aarch64-dis.c (arch_variant): New.
(determine_disassembling_preference): Disassemble according to
arch variant.
(select_aarch64_variant): New.
(print_insn_aarch64): Set feature set.

4 years agoPR26580, Size and alignment of commons vs as-needed shared lib
Alan Modra [Tue, 8 Sep 2020 03:32:31 +0000 (13:02 +0930)]
PR26580, Size and alignment of commons vs as-needed shared lib

Two pieces to this puzzle:
1) Revert HJ's fix for PR13250 so that size and alignment isn't
   sticky, instead attack the real underlying problem that
   _bfd_generic_link_add_one_symbol does the wrong thing in making a
   common section in a shared library bfd.
2) Save and restore common u.c.p fields, which hold the section and
   alignment.

A better fix for (2) would be to throw away all of that horrible code
saving and restoring the hash table when loading as-needed library
symbols, and instead do a scan over as-needed library symbols before
adding anything.

bfd/
PR 13250
PR 26580
* elflink.c (_bfd_elf_merge_symbol): Make "override" a bfd**.
Return oldbfd in override when old common should override new
common.
(_bfd_elf_add_default_symbol): Adjust to suit.
(elf_link_add_object_symbols): Likewise.  Pass "override" to
_bfd_generic_link_add_one_symbol.  Save and restore common u.c.p
field for --as-needed shared libraries.  Revert pr13250 changes.
ld/
* testsuite/ld-elf/pr26580-a.s,
* testsuite/ld-elf/pr26580-b.s,
* testsuite/ld-elf/pr26580-1.sd,
* testsuite/ld-elf/pr26580-2.sd: New tests
* testsuite/ld-elf/comm-data.exp: Run new tests.
* testsuite/ld-elf/pr26580-a.c,
* testsuite/ld-elf/pr26580-b.c,
* testsuite/ld-elf/pr26580-3.out,
* testsuite/ld-elf/pr26580-4.out: New tests.
* testsuite/ld-elf/shared.exp: Run new tests.

4 years agosync libiberty from gcc
Alan Modra [Tue, 8 Sep 2020 09:27:15 +0000 (18:57 +0930)]
sync libiberty from gcc

config/
Sync from gcc
2020-07-15  H.J. Lu  <hjl.tools@gmail.com>
PR bootstrap/96202
* cet.m4 (GCC_CET_HOST_FLAGS): Don't enable CET without CET
support in stage1 nor for build support.
libiberty/
* configure: Regenerate.

Sync from gcc
2020-09-08  Alan Modra  <amodra@gmail.com>
* d-demangle.c: Include limits.h.
(ULONG_MAX, UINT_MAX): Provide fall-back definition.
(dlang_number): Simplify and correct overflow test.  Only
write *ret on returning non-NULL.  Make "ret" an unsigned long*.
Only succeed for result of [0,UINT_MAX].
(dlang_decode_backref): Simplify and correct overflow test.
Only write *ret on returning non-NULL.  Only succeed for
result [1,MAX_LONG].
(dlang_backref): Remove now unnecessary range check.
(dlang_symbol_name_p): Likewise.
(string_need): Take a size_t n arg, and use size_t tem.
(string_append): Use size_t n.
(string_appendn, string_prependn): Take a size_t n arg.
(TEMPLATE_LENGTH_UNKNOWN): Define as -1UL.
(dlang_lname, dlang_parse_template): Take an unsigned long len
arg.
(dlang_symbol_backref, dlang_identifier, dlang_parse_integer),
(dlang_parse_integer, dlang_parse_string),
(dlang_parse_arrayliteral, dlang_parse_assocarray),
(dlang_parse_structlit, dlang_parse_tuple),
(dlang_template_symbol_param, dlang_template_args): Use
unsigned long variables.
* testsuite/d-demangle-expected: Add new tests.

2020-08-04  Iain Buclaw  <ibuclaw@gdcproject.org>
* d-demangle.c (dlang_function_args): Handle 'in' and 'in ref'
parameter storage classes.
(dlang_type): Remove identifier type.
* testsuite/d-demangle-expected: Update tests.

2020-08-03  Richard Biener  <rguenther@suse.de>
PR lto/96385
* simple-object-elf.c
(simple_object_elf_copy_lto_debug_sections): Localize global
UNDEFs and reuse the prevailing name.

2020-07-10  Ian Lance Taylor  <iant@golang.org>
PR demangler/96143
* cp-demangle.c (d_lambda): Don't add substitution candidate.
* testsuite/demangle-expected: Update a few existing test cases
accordingly, and add a new test case.

2020-07-04  Jason Merrill  <jason@redhat.com>
* cp-demangle.c (cplus_demangle_operators): Add di, dx, dX.
(d_expression_1): Handle di and dX.
(is_designated_init, d_maybe_print_designated_init): New.
(d_print_comp_inner): Use d_maybe_print_designated_init.
* testsuite/demangle-expected: Add designator tests.

2020-06-25  Nick Clifton  <nickc@redhat.com>
* bsearch.c (bsearch): Remove use of register keyword.
* bsearch_r.c (bsearch_r): Likewise.

4 years ago[gdb/testsuite] Fix gdb.dwarf2/frame-inlined-in-outer-frame.exp
Tom de Vries [Tue, 8 Sep 2020 09:51:29 +0000 (11:51 +0200)]
[gdb/testsuite] Fix gdb.dwarf2/frame-inlined-in-outer-frame.exp

I'm running into the following FAIL:
...
(gdb) starti ^M
Starting program: frame-inlined-in-outer-frame frame^M
^M
^M
Program stopped.^M
0x0000000000401000 in _start ()^M
(gdb) PASS: gdb.dwarf2/frame-inlined-in-outer-frame.exp: frame
frame^M
(gdb) FAIL: gdb.dwarf2/frame-inlined-in-outer-frame.exp: step into foo
stepi^M
0x0000000000401001 in foo ()^M
...

The problem is that the .exp file issues a gdb_starti_cmd without consuming
the resulting prompt.  Consequently, the gdb_test issuing the frame command
consumes that prompt, and things are out-of-sync from that point onwards.

Fix this by consuming the gdb prompt after gdb_starti_cmd.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2020-09-08  Tom de Vries  <tdevries@suse.de>

* gdb.dwarf2/frame-inlined-in-outer-frame.exp: Consume gdb prompt
after gdb_starti_cmd.

4 years agoStop the plugin handler from ignoring unknown symbol types when conanicalizing weak...
Nick Clifton [Tue, 8 Sep 2020 08:49:15 +0000 (09:49 +0100)]
Stop the plugin handler from ignoring unknown symbol types when conanicalizing weak definitions.

* plugin.c (bfd_plugin_canonicalize_symtab): Handle the case of an
unrecognized symbol type in a weak definition.

4 years agoAutomatic date update in version.in
GDB Administrator [Tue, 8 Sep 2020 00:00:10 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agogdb/infrun: use switch_to_target_no_thread to switch the target
Tankut Baris Aktemur [Mon, 7 Sep 2020 12:40:40 +0000 (14:40 +0200)]
gdb/infrun: use switch_to_target_no_thread to switch the target

Use the available `switch_to_target_no_thread` function to switch the
target.  This is a refactoring.

gdb/ChangeLog:
2020-09-07  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

* infrun.c (fetch_inferior_event): Use
`switch_to_target_no_thread` to switch the target.

4 years agogas: Output directory and file names in .debug_line_str for DWARF5
Mark Wielaard [Mon, 7 Sep 2020 13:03:20 +0000 (14:03 +0100)]
gas: Output directory and file names in .debug_line_str for DWARF5

* dwarf2dbg.c (add_line_strp): New function.
(out_dir_and_file_list): Take line_seg and sizeof_offset as
arguments, Use DW_FORM_line_strp for dir and file. Call
add_line_strp and set symbol offset for DWARF2_LINE_VERSION 5.
(out_debug_line): Call out_dir_and_file_list with line_seg and
sizeof_offset.
* gas/testsuite/gas/elf/dwarf-5-file0.d: Expect indirect line
strings.

4 years agogas: Output .debug_rnglists for DWARF 5.
Mark Wielaard [Mon, 7 Sep 2020 12:04:45 +0000 (13:04 +0100)]
gas: Output .debug_rnglists for DWARF 5.

* dwarf2dbg.c (DWARF2_RNGLISTS_VERSION): New constant.
(out_debug_ranges): Add ranges_sym argument and set it.
(out_debug_rnglists): New function.
(out_debug_info): Change ranges_seg argument to ranges_sym
and use it to set DW_AT_ranges value.
(dwarf2_finish): Remove ranges_seg, add ranges_sym. For
DWARF2_VERSION 5 call out_debug_rnglists.

4 years agogas: Make sure to only add an md5 to a .file when requested.
Mark Wielaard [Mon, 7 Sep 2020 11:08:07 +0000 (12:08 +0100)]
gas: Make sure to only add an md5 to a .file when requested.

* dwarf2dbg.c (dwarf2_directive_filename): Initialize with_md5 to
FALSE.
* gas/testsuite/gas/elf/dwarf-5-file0.s: Add a random bignum.

4 years agoAutomatic date update in version.in
GDB Administrator [Mon, 7 Sep 2020 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoRemove unused declaration from symfile.h
Tom Tromey [Sun, 6 Sep 2020 21:50:59 +0000 (15:50 -0600)]
Remove unused declaration from symfile.h

dwarf2_free_objfile no longer exists, so this patch removes its
declaration from symfile.h.

gdb/ChangeLog
2020-09-06  Tom Tromey  <tom@tromey.com>

* symfile.h (dwarf2_free_objfile): Don't declare.

4 years agoAutomatic date update in version.in
GDB Administrator [Sun, 6 Sep 2020 00:00:07 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoAutomatic date update in version.in
GDB Administrator [Sat, 5 Sep 2020 00:00:14 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoPR26574, heap buffer overflow in _bfd_elf_slurp_secondary_reloc_section
Alan Modra [Fri, 4 Sep 2020 09:49:18 +0000 (19:19 +0930)]
PR26574, heap buffer overflow in _bfd_elf_slurp_secondary_reloc_section

A horribly fuzzed object with section headers inside the ELF header.
Disallow that, and crazy reloc sizes.

PR 26574
* elfcode.h (elf_object_p): Sanity check section header offset.
* elf.c (_bfd_elf_slurp_secondary_reloc_section): Sanity check
sh_entsize.

4 years agoAllow plugin syms to mark as-needed shared libs needed
Alan Modra [Fri, 4 Sep 2020 04:24:21 +0000 (13:54 +0930)]
Allow plugin syms to mark as-needed shared libs needed

We must tell LTO about symbols in all shared libraries loaded.  That
means we can't load extra shared libraries after LTO recompilation, at
least, not those that affect the set of symbols that LTO cares about,
the IR symbols.

This change will likely result in complaints about --as-needed
libraries being loaded unnecessarily, but being correct is more
important than being optimal.  One of the PR15146 tests regresses, and
while that could be hidden by disabling the missing dso message by
making it conditional on h->root.non_ir_ref_regular, that would just
be sweeping a problem under the rug.

bfd/
PR 15146
PR 26314
PR 26530
* elflink.c (elf_link_add_object_symbols): Do set def_regular
and ref_regular for IR symbols.  Don't clear dynsym, allowing
IR symbols to load --as-needed shared libraries, but prevent
IR symbols from becoming dynamic.
ld/
* testsuite/ld-plugin/lto.exp: Don't run pr15146 tests.
* testsuite/ld-plugin/pr15146.d: Delete.
* testsuite/ld-plugin/pr15146a.c: Delete.
* testsuite/ld-plugin/pr15146b.c: Delete.
* testsuite/ld-plugin/pr15146c.c: Delete.
* testsuite/ld-plugin/pr15146d.c: Delete.

4 years agold: Change NOSANTIZE_CFLAGS to NOSANITIZE_CFLAGS
H.J. Lu [Fri, 4 Sep 2020 00:17:19 +0000 (17:17 -0700)]
ld: Change NOSANTIZE_CFLAGS to NOSANITIZE_CFLAGS

* testsuite/config/default.exp: Change NOSANTIZE_CFLAGS to
NOSANITIZE_CFLAGS.
* testsuite/ld-elf/dwarf.exp: Likewise.
* testsuite/ld-elf/indirect.exp: Likewise.
* testsuite/ld-elf/linux-x86.exp: Likewise.
* testsuite/ld-elf/shared.exp: Likewise.
* testsuite/ld-elf/tls.exp: Likewise.
* testsuite/ld-elfcomm/elfcomm.exp: Likewise.
* testsuite/ld-elfvers/vers.exp: Likewise.
* testsuite/ld-elfvsb/elfvsb.exp: Likewise.
* testsuite/ld-elfweak/elfweak.exp: Likewise.
* testsuite/ld-gc/gc.exp: Likewise.
* testsuite/ld-plugin/lto.exp: Likewise.
* testsuite/ld-plugin/plugin.exp: Likewise.
* testsuite/ld-scripts/crossref.exp: Likewise.
* testsuite/ld-selective/selective.exp: Likewise.
* testsuite/ld-shared/shared.exp: Likewise.
* testsuite/ld-size/size.exp: Likewise.
* testsuite/ld-srec/srec.exp: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Likewise.

4 years agoAutomatic date update in version.in
GDB Administrator [Fri, 4 Sep 2020 00:00:14 +0000 (00:00 +0000)]
Automatic date update in version.in

4 years agoAllow Flang kind printing in complex.exp,pointer-to-pointer.exp,vla-ptr-info.exp
Alok Kumar Sharma [Thu, 3 Sep 2020 16:35:18 +0000 (22:05 +0530)]
Allow Flang kind printing in complex.exp,pointer-to-pointer.exp,vla-ptr-info.exp

In the test cases complex.exp,pointer-to-pointer.exp,vla-ptr-info.exp
fortran.exp routines are not used, which are to determine the type/kind
string. Due to this these test incorrectly fail for Flang.
Now test cases are modified to use fortran.exp routines. fortran.exp
file is modified to add absent routines fortran_complex8 and
fortran_complex16.

gdb/testsuite/ChangeLog

* lib/fortran.exp (fortran_complex8): New proc.
(fortran_complex16): New proc.
* gdb.fortran/complex.exp: Use routines from fortran.exp
* gdb.fortran/pointer-to-pointer.exp: Likewise.
* gdb.fortran/vla-ptr-info.exp: Likewise.

4 years agoSupport printing of 16 byte real/complex type for Flang compiler
Alok Kumar Sharma [Thu, 3 Sep 2020 16:21:01 +0000 (21:51 +0530)]
Support printing of 16 byte real/complex type for Flang compiler

Currently GDB is not able to print correct value for real/complex type
from binary generated from Flang compiler. This is due to GDB not able
to recognise and determine correct format floatformats_ia64_quad and
instead falling back to default_floatformat_for_type. This leads
incorrect output.
Now function i386_floatformat_for_type is fixed to correctly identify
Flang generated 16 byte real/complex type.

gdb/ChangeLog

* gdb/i386-tdep.c (i386_floatformat_for_type): Added conditions
to match 16 byte real/complex type generated by Flang compiler.

4 years agobpf: several small fixes in the simulator
Jose E. Marchesi [Thu, 3 Sep 2020 14:24:51 +0000 (16:24 +0200)]
bpf: several small fixes in the simulator

This patch fixes the following problems:
- Missing includes in several files leading to implicit function
  declarations.
- Missing prototype for bpf_trace_printk in bpf-helpers.h
- The simulator bitsize was set to 32 bits, causing truncation of
  the program counter.

Tested in bpf-unknown-none.

sim/ChangeLog:

2020-09-03  Jose E. Marchesi  <jose.marchesi@oracle.com>

* bpf/bpf.c: Include bpf-helpers.h.
* bpf/bpf-helpers.h: Provide a prototype for bpf_trace_printk.
* bpf/configure.ac: Set simulator bitsize to 64.
* bpf/configure (includedir): Regenerate.
* bpf/sim-if.c: Include stdlib.h.
* bpf/traps.c: Likewise.

4 years agosim: better handle builds of primary targets lacking sims
Jose E. Marchesi [Thu, 3 Sep 2020 13:22:05 +0000 (15:22 +0200)]
sim: better handle builds of primary targets lacking sims

When building with a primary target that doesn't feature a simulator,
one would expect for nothing to be done in sim/.  However, a
$(top_builddir)/sim/testsuite directory is created, with a Makefile
containing a rule like:

check-DEJAGNU: site.exp
echo "Dejagnu-checking in `pwd` directory ..."
rootme=`pwd`; export rootme; echo rootme = $$rootme; \
srcdir=`cd ${srcdir}; pwd`; export srcdir ; echo srcdir = $$srcdir; \
EXPECT=${EXPECT} ; export EXPECT ; echo EXPECT = $$EXPECT; \
if [ -f $$rootme/../../expect/expect ]; then \
  TCL_LIBRARY=`cd $$srcdir/../../tcl/library && pwd`; \
  export TCL_LIBRARY; \
fi; \
        echo TCL_LIBRARY = $$TCL_LIBRARY; \
runtest=$(RUNTEST); echo runtest = $$runtest; \
if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \
  $$runtest $(RUNTESTFLAGS); \
else echo "WARNING: could not find \`runtest'" 1>&2; :;\
fi

Consequently, when `make check' recurses into sim/testsuite, the above
rule is executed.  Until now, the desired effect (of doing nothing)
was achieved because `runtest --version' fails due to a malformed
site.exp being generated in objdir: it is malformed because the
primary target doesn't configure a $sim_arch. i.e. this was doing the
right thing just by chance.

However, the git version of dejagnu seems to have changed in a way
runtest doesn't try to load site.exp when it gets --version.  The net
effect is that the rule above tries to actually run the tests, failing
miserably.

This little patch makes sim/configure to not recurse into
sim/testsuite if the primary target didn't configure a simulator.

Tested with:
- A simulator target (bpf-unkonwn-none).
- A simulator-less target (x86_64-linux-gnu).
- A simulator-less target and --build-targets=all.

sim/ChangeLog:

2020-09-03  Jose E. Marchesi  <jose.marchesi@oracle.com>

* configure.ac: Do not configure sim/testsuite nor sim/igen if the
primary target doesn't have a simulator.
* configure: Regenerate.

4 years agogas: Use DW_FORM_sec_offset for DWARF version 4 or higher.
Mark Wielaard [Tue, 1 Sep 2020 13:29:56 +0000 (15:29 +0200)]
gas: Use DW_FORM_sec_offset for DWARF version 4 or higher.

Older DWARF versions used DW_FORM_data4 or DW_FORM_data8 for offsets
into sections for e.g. DW_AT_stmt_list ot DW_AT_ranges. But version 4
introduced a dedicated form for such section offsets. Make sure to emit
the proper form for newer DWARF versions.

gas/ChangeLog:

* dwarf2dbg.c (out_debug_abbrev): Use DW_FORM_sec_offset for DWARF
version 4 or higher.

4 years agoFix a division by zero error when processing secondary relocs in a fuzzed input file.
Nick Clifton [Thu, 3 Sep 2020 15:11:43 +0000 (16:11 +0100)]
Fix a division by zero error when processing secondary relocs in a fuzzed input file.

PR 26521
* elf.c (_bfd_elf_write_secondary_reloc_section): Check for
secondary reloc sections with a zero sh_entsize field.

4 years ago[gdb/breakpoint, PIE] Handle setting breakpoint on label without address
Tom de Vries [Thu, 3 Sep 2020 10:30:10 +0000 (12:30 +0200)]
[gdb/breakpoint, PIE] Handle setting breakpoint on label without address

When adding:
...
if ![runto_main] then {
    fail "can't run to main"
    return 0
}
...
to test-case gdb.base/label-without-address.exp and running it with target
board unix/-fPIE/-pie, we run into:
...
(gdb) break main:L1^M
Breakpoint 2 at 0x555555554000: file label-without-address.c, line 22.^M
...
That is, for a label with optimized-out address, we set a breakpoint at the
relocation base.

The root cause is that the dwarf reader, despite finding that attribute
DW_AT_low_pc is missing, still tags the L1 symbol as having LOC_LABEL, which
means it has a valid address, which defaults to 0.

Fix this by instead tagging the L1 symbol with LOC_OPTIMIZED_OUT.

Tested on x86_64-linux.

gdb/ChangeLog:

2020-09-03  Tom de Vries  <tdevries@suse.de>

PR breakpoint/26546
* dwarf2/read.c (new_symbol): Tag label symbol without DW_AT_low_pc as
LOC_OPTIMIZED_OUT instead of LOC_LABEL.

gdb/testsuite/ChangeLog:

2020-09-03  Tom de Vries  <tdevries@suse.de>

PR breakpoint/26546
* gdb.base/label-without-address.exp: Runto main first.