deliverable/binutils-gdb.git
5 years agoFix potential array overruns when disassembling corrupt v850 binaries.
Nick Clifton [Mon, 4 Nov 2019 12:02:20 +0000 (12:02 +0000)] 
Fix potential array overruns when disassembling corrupt v850 binaries.

* v850-dis.c (get_v850_sreg_name): New function.  Returns the name
of a v850 system register.  Move the v850_sreg_names array into
this function.
(get_v850_reg_name): Likewise for ordinary register names.
(get_v850_vreg_name): Likewise for vector register names.
(get_v850_cc_name): Likewise for condition codes.
* get_v850_float_cc_name): Likewise for floating point condition
codes.
(get_v850_cacheop_name): Likewise for cache-ops.
(get_v850_prefop_name): Likewise for pref-ops.
(disassemble): Use the new accessor functions.

5 years agoImplement objcopy/strip --keep-section=<sectionpattern>
Fāng-ruì Sòng [Fri, 1 Nov 2019 21:47:55 +0000 (14:47 -0700)] 
Implement objcopy/strip --keep-section=<sectionpattern>

llvm-objcopy and llvm-strip support an option --keep-section that
keeps some sections from being removed.

* objcopy.c (enum option_values): Add OPTION_KEEP_SECTION.
(SECTION_CONTEXT_KEEP): Define.  Adjust other SECTION_CONTEXT macros.
(copy_usage): Describe --keep-section.
(strip_usage): Likewise.
(copy_main): Handle SECTION_CONTEXT_KEEP.
(strip_main): Likewise.
(is_strip_section_1): Likewise.
* testsuite/binutils-all/objcopy.exp: Add tests.
* testsuite/binutils-all/keep-section-1.d: New test driver file.
* testsuite/binutils-all/keep-section-2.d: Likewise.
* doc/binutils.texi: Document the new feature.
* NEWS: Mention the new feature.

5 years agoAutomatic date update in version.in
GDB Administrator [Mon, 4 Nov 2019 00:00:16 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoAutomatic date update in version.in
GDB Administrator [Sun, 3 Nov 2019 00:01:13 +0000 (00:01 +0000)] 
Automatic date update in version.in

5 years ago[gdb/testsuite] Remove superfluous 3rd argument from gdb_test call (4)
Tom de Vries [Sat, 2 Nov 2019 05:55:10 +0000 (06:55 +0100)] 
[gdb/testsuite] Remove superfluous 3rd argument from gdb_test call (4)

There's a pattern:
...
gdb_test <command> <pattern> <command>
...
that can be written shorter as:
...
gdb_test <command> <pattern>
...

Detect this pattern in proc gdb_test:
...
     global gdb_prompt
     upvar timeout timeout

     if [llength $args]>2 then {
        set message [lindex $args 2]
+       if { $message == [lindex $args 0] && [llength $args] == 3 } {
+           error "HERE"
+       }
     } else {
         set message [lindex $args 0]
     }
...
and fix all occurrences in the testsuite/gdb.base subdir.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-11-02  Tom de Vries  <tdevries@suse.de>

* gdb.base/advance.exp: Drop superfluous 3rd argument to gdb_test.
* gdb.base/anon.exp: Same.
* gdb.base/auto-connect-native-target.exp: Same.
* gdb.base/call-ar-st.exp: Same.
* gdb.base/catch-syscall.exp: Same.
* gdb.base/commands.exp: Same.
* gdb.base/default.exp: Same.
* gdb.base/display.exp: Same.
* gdb.base/float.exp: Same.
* gdb.base/foll-fork.exp: Same.
* gdb.base/help.exp: Same.
* gdb.base/info-macros.exp: Same.
* gdb.base/info-proc.exp: Same.
* gdb.base/info-target.exp: Same.
* gdb.base/long_long.exp: Same.
* gdb.base/macscp.exp: Same.
* gdb.base/memattr.exp: Same.
* gdb.base/nofield.exp: Same.
* gdb.base/pointers.exp: Same.
* gdb.base/printcmds.exp: Same.
* gdb.base/ptype.exp: Same.
* gdb.base/restore.exp: Same.
* gdb.base/return.exp: Same.
* gdb.base/scope.exp: Same.
* gdb.base/set-noassign.exp: Same.
* gdb.base/setshow.exp: Same.
* gdb.base/shlib-call.exp: Same.
* gdb.base/signals.exp: Same.
* gdb.base/sigstep.exp: Same.
* gdb.base/skip.exp: Same.
* gdb.base/solib-symbol.exp: Same.
* gdb.base/stap-probe.exp: Same.
* gdb.base/step-line.exp: Same.
* gdb.base/step-test.exp: Same.
* gdb.base/style.exp: Same.
* gdb.base/varargs.exp: Same.
* gdb.base/vla-datatypes.exp: Same.
* gdb.base/vla-ptr.exp: Same.
* gdb.base/vla-sideeffect.exp: Same.
* gdb.base/volatile.exp: Same.
* gdb.base/watch-cond-infcall.exp: Same.
* gdb.base/watchpoint.exp: Same.

Change-Id: Ifd24dc13d552e7dd03f9049db419b08c6adc4112

5 years ago[gdb/testsuite] Remove superfluous 3rd argument from gdb_test call (3)
Tom de Vries [Sat, 2 Nov 2019 05:55:10 +0000 (06:55 +0100)] 
[gdb/testsuite] Remove superfluous 3rd argument from gdb_test call (3)

There's a pattern:
...
gdb_test <command> <pattern> <command>
...
that can be written shorter as:
...
gdb_test <command> <pattern>
...

Detect this pattern in proc gdb_test:
...
     global gdb_prompt
     upvar timeout timeout

     if [llength $args]>2 then {
        set message [lindex $args 2]
+       if { $message == [lindex $args 0] && [llength $args] == 3 } {
+           error "HERE"
+       }
     } else {
         set message [lindex $args 0]
     }
...
and fix all occurrences in the testsuite/gdb.cp subdir.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-11-02  Tom de Vries  <tdevries@suse.de>

* gdb.cp/anon-union.exp: Drop superfluous 3rd argument to gdb_test.
* gdb.cp/cpexprs.exp: Same.
* gdb.cp/except-multi-location.exp: Same.
* gdb.cp/exceptprint.exp: Same.
* gdb.cp/gdb2384.exp: Same.
* gdb.cp/inherit.exp: Same.
* gdb.cp/m-static.exp: Same.
* gdb.cp/meth-typedefs.exp: Same.
* gdb.cp/misc.exp: Same.
* gdb.cp/namespace.exp: Same.
* gdb.cp/non-trivial-retval.exp: Same.
* gdb.cp/overload.exp: Same.
* gdb.cp/pr17132.exp: Same.
* gdb.cp/re-set-overloaded.exp: Same.
* gdb.cp/rvalue-ref-types.exp: Same.
* gdb.cp/templates.exp: Same.

Change-Id: I0254d0cea71e7376aedb078166188a8010eeaebe

5 years agoAutomatic date update in version.in
GDB Administrator [Sat, 2 Nov 2019 00:00:15 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoSimplify print_sys_errmsg
Tom Tromey [Thu, 31 Oct 2019 22:46:16 +0000 (16:46 -0600)] 
Simplify print_sys_errmsg

On irc, Christian pointed out that print_sys_errmsg could be
simplified by avoiding alloca entirely.  This patch implements this.

gdb/ChangeLog
2019-11-01  Tom Tromey  <tromey@adacore.com>

* utils.c (print_sys_errmsg): Simplify.

Change-Id: Ic399dade274ea61b63ef0540b3a3be2f0f80160a

5 years agoFix up safe_strerror constification
Tom Tromey [Thu, 31 Oct 2019 18:44:27 +0000 (12:44 -0600)] 
Fix up safe_strerror constification

The earlier patch to constify safe_strerror missed a couple of spots,
corrected here.

gdb/ChangeLog
2019-11-01  Tom Tromey  <tromey@adacore.com>

* gdbsupport/mingw-strerror.c (safe_strerror): Constify result.

Change-Id: I36d5ced144d27b1a6734d9ab9a10a7b9f339ae88

5 years agoMove check for strerror_r to common.m4 where it belongs
Christian Biesinger [Thu, 31 Oct 2019 23:24:07 +0000 (18:24 -0500)] 
Move check for strerror_r to common.m4 where it belongs

gdb/ChangeLog:

2019-11-01  Christian Biesinger  <cbiesinger@google.com>

* configure: Regenerate.
* configure.ac: Remove check for strerror_r.
* gdbsupport/common.m4: Check for strerror_r.

gdb/gdbserver/ChangeLog:

2019-11-01  Christian Biesinger  <cbiesinger@google.com>

* configure: Regenerate.
* configure.ac: Remove check for strerror_r.

Change-Id: Ibc290c3f84b1db23e998cffdbe2c1f97651d2a8d

5 years ago[ARM, thumb] Fix disassembling bug after reloading a symbol file
Luis Machado [Fri, 1 Nov 2019 13:11:17 +0000 (10:11 -0300)] 
[ARM, thumb] Fix disassembling bug after reloading a symbol file

The speed optimization from commit 5f6cac4085c95c5339b9549dc06d4f9184184fa6
made GDB skip reloading all symbols when the same symbol file is reloaded.

As a result, ARM targets only read the mapping symbols the first time we
load a symbol file. When reloaded, the speed optimization above will
cause an early return and gdbarch_record_special_symbol won't be called to
save mapping symbol data, which in turn affects disassembling of thumb
instructions.

First load and correct disassemble output:

Dump of assembler code for function main:
    0x0000821c <+0>:     bx      pc
    0x0000821e <+2>:     nop
    0x00008220 <+4>:     mov     r0, #0
    0x00008224 <+8>:     bx      lr

Second load and incorrect disassemble output:

Dump of assembler code for function main:
    0x0000821c <+0>:     bx      pc
    0x0000821e <+2>:     nop
    0x00008220 <+4>:     movs    r0, r0
    0x00008222 <+6>:     b.n     0x8966
    0x00008224 <+8>:     vrhadd.u16      d14, d14, d31

This happens because the mapping symbol data is stored in an objfile_key-based
container, and that data isn't preserved across the two symbol loading
operations.

The following patch fixes this by storing the mapping symbol data in a
bfd_key-based container, which doesn't change as long as the bfd is the same.

I've also added a new test to verify the correct disassemble output.

gdb/ChangeLog:

2019-11-01  Luis Machado  <luis.machado@linaro.org>

PR gdb/25124

* arm-tdep.c (arm_per_objfile): Rename to ...
(arm_per_bfd): ... this.
(arm_objfile_data_key): Rename to ...
(arm_bfd_data_key): ... this.
(arm_find_mapping_symbol): Adjust access to new bfd_key-based
data.
(arm_record_special_symbol): Likewise.

gdb/testsuite/ChangeLog:

2019-11-01  Luis Machado  <luis.machado@linaro.org>

PR gdb/25124

* gdb.arch/pr25124.S: New file.
* gdb.arch/pr25124.exp: New file.

Change-Id: I22c3e6ebe9bfedad66d56fe9656994fa1761c485

5 years agoAutomatic date update in version.in
GDB Administrator [Fri, 1 Nov 2019 00:00:27 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agogdb: Don't print a newline in language la_print_typedef methods
Andrew Burgess [Tue, 24 Sep 2019 22:01:14 +0000 (23:01 +0100)] 
gdb: Don't print a newline in language la_print_typedef methods

When calling the language la_print_typedef method, don't include a
newline at the end, instead print the newline from the users of
la_print_typedef.

This change will be useful in a later commit when the output from
la_print_typedef will be placed into an MI output field, in which case
the trailing newline is not required.

There should be no user visible changes after this commit.

gdb/ChangeLog:

* ada-typeprint.c (ada_print_typedef): Don't print newline at the
end.
* c-typeprint.c (c_print_typedef): Likewise.
* f-typeprint.c (f_print_typedef): Likewise.
* m2-typeprint.c (m2_print_typedef): Likewise.
* p-typeprint.c (pascal_print_typedef): Likewise.
* rust-lang.c (rust_print_typedef): Likewise.
* symtab.c (print_symbol_info): Print a newline after calling
typedef_print.

Change-Id: I6e697ea1ec0eadaa31aefaea959b2055188d680d

5 years agogdb: Add new commands to list module variables and functions
Andrew Burgess [Wed, 10 Jul 2019 14:54:03 +0000 (15:54 +0100)] 
gdb: Add new commands to list module variables and functions

This patch adds two new commands "info module functions" and "info
module variables".  These commands list all of the functions and
variables grouped by module and then by file.

For example:

  (gdb) info module functions
  All functions in all modules:

  Module "mod1":

  File /some/path/gdb/testsuite/gdb.fortran/info-types.f90:
  35: void mod1::__copy_mod1_M1t1(Type m1t1, Type m1t1);
  25: void mod1::sub_m1_a(integer(kind=4));
  31: integer(kind=4) mod1::sub_m1_b(void);

  Module "mod2":

  File /some/path/gdb/testsuite/gdb.fortran/info-types.f90:
  41: void mod2::sub_m2_a(integer(kind=4), logical(kind=4));
  49: logical(kind=4) mod2::sub_m2_b(real(kind=4));

The new commands take set of flags that allow the output to be
filtered, the user can filter by variable/function name, type, or
containing module.

As GDB doesn't currently track the relationship between a module and
the variables or functions within it in the symbol table, so I filter
based on the module prefix in order to find the functions or variables
in each module.  What this makes clear is that a user could get this
same information using "info variables" and simply provide the prefix
themselves, for example:

  (gdb) info module functions -m mod1 _a
  All functions matching regular expression "_a",
   in all modules matching regular expression "mod1":

  Module "mod1":

  File /some/path/gdb/testsuite/gdb.fortran/info-types.f90:
  25: void mod1::sub_m1_a(integer(kind=4));

Is similar to:

  (gdb) info functions mod1::.*_a.*
  All functions matching regular expression "mod1::.*_a":

  File /some/path/gdb/testsuite/gdb.fortran/info-types.f90:
  25: void mod1::sub_m1_a(integer(kind=4));

The benefits I see for a separate command are that the user doesn't
have to think (or know) about the module prefix format, nor worry
about building a proper regexp.  The user can also easily scan across
modules without having to build complex regexps.

The new function search_module_symbols is extern in this patch despite
only being used within symtab.c, this is because a later patch in this
series will also be using this function from outside symtab.c.

This patch is a new implementation of an idea originally worked on by
Mark O'Connor, Chris January, David Lecomber, and Xavier Oro from ARM.

gdb/ChangeLog:

* symtab.c (info_module_cmdlist): New variable.
(info_module_command): New function.
(search_module_symbols): New function.
(info_module_subcommand): New function.
(struct info_modules_var_func_options): New struct.
(info_modules_var_func_options_defs): New variable.
(make_info_modules_var_func_options_def_group): New function.
(info_module_functions_command): New function.
(info_module_variables_command): New function.
(info_module_var_func_command_completer): New function.
(_initialize_symtab): Register new 'info module functions' and
'info module variables' commands.
* symtab.h (typedef symbol_search_in_module): New typedef.
(search_module_symbols): Declare new function.
* NEWS: Mention new commands.

gdb/doc/ChangeLog:

* gdb.texinfo (Symbols): Document new 'info module variables' and
'info module functions' commands.

gdb/testsuite/ChangeLog:

* gdb.fortran/info-modules.exp: Update expected results, and add
additional tests for 'info module functinos', and 'info module
variables'.
* gdb.fortran/info-types.exp: Update expected results.
* gdb.fortran/info-types.f90: Extend testcase with additional
module variables and functions.

Change-Id: I8c2960640e2e101b77eff54027d687e21ec22e2b

5 years agogdb/fortran: Add new 'info modules' command
Andrew Burgess [Tue, 9 Jul 2019 20:38:59 +0000 (21:38 +0100)] 
gdb/fortran: Add new 'info modules' command

Add a new command 'info modules' that lists all of the modules GDB
knows about from the debug information.

A module is a debugging entity in the DWARF defined with
DW_TAG_module, currently Fortran is known to use this tag for its
modules.  I'm not aware of any other language that currently makes use
of DW_TAG_module.

The output style is similar to the 'info type' output:

    (gdb) info modules
    All defined modules:

    File info-types.f90:
    16:     mod1
    24:     mod2
    (gdb)

Where the user is told the file the module is defined in and, on the
left hand side, the line number at which the module is defined along
with the name of the module.

This patch is a new implementation of an idea originally worked on by
Mark O'Connor, Chris January, David Lecomber, and Xavier Oro from ARM.

gdb/ChangeLog:

* dwarf2read.c (dw2_symtab_iter_next): Handle MODULE_DOMAIN.
(dw2_expand_marked_cus): Handle MODULES_DOMAIN.
(dw2_debug_names_iterator::next): Handle MODULE_DOMAIN and
MODULES_DOMAIN.
(scan_partial_symbols): Only create partial module symbols for non
declarations.
* psymtab.c (recursively_search_psymtabs): Handle MODULE_DOMAIN
and MODULES_DOMAIN.
* symtab.c (search_domain_name): Likewise.
(search_symbols): Likewise.
(print_symbol_info): Likewise.
(symtab_symbol_info): Likewise.
(info_modules_command): New function.
(_initialize_symtab): Register 'info modules' command.
* symtab.h (enum search_domain): Add MODULES_DOMAIN.
* NEWS: Mention new 'info modules' command.

gdb/doc/ChangeLog:

* gdb.texinfo (Symbols): Document new 'info modules' command.

gdb/testsuite/ChangeLog:

* gdb.fortran/info-modules.exp: New file.
* gdb.fortran/info-types.exp: Build with new file.
* gdb.fortran/info-types.f90: Include and use new module.
* gdb.fortran/info-types-2.f90: New file.

Change-Id: I2b781dd5a06bcad04620ccdc45f01a0f711adfad

5 years agoNEWS and documentation for $_gdb_setting and $_gdb_setting_str.
Philippe Waroquiers [Sun, 28 Apr 2019 12:44:44 +0000 (14:44 +0200)] 
NEWS and documentation for $_gdb_setting and $_gdb_setting_str.

gdb/ChangeLog
2019-10-31  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

* NEWS: Mention $_gdb_setting, $_gdb_setting_str, $_gdb_maint_setting
and $_gdb_maint_setting_str.

gdb/doc/ChangeLog
2019-10-31  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

* gdb.texinfo (Convenience Funs): Document the new
$_gdb_setting_str, $_gdb_maint_setting and $_gdb_maint_setting_str
convenience functions.

5 years agoTest the convenience functions $_gdb_setting and $_gdb_setting_str.
Philippe Waroquiers [Sun, 28 Apr 2019 12:40:50 +0000 (14:40 +0200)] 
Test the convenience functions $_gdb_setting and $_gdb_setting_str.

gdb/testsuite/ChangeLog
2019-10-31  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

* gdb.base/setshow.exp: Test $_gdb_setting and $_gdb_setting_str.
* gdb.base/settings.exp: Test all settings types using
$_gdb_maint_setting and $_gdb_maint_setting_str in proc_show_setting,
that now verifies that the value of "maint show" is the same as
returned by the settings functions.  Test the type of the
maintenance settings.
* gdb.base/default.exp: Update show_conv_list.

5 years agoImplement convenience functions to examine GDB settings.
Philippe Waroquiers [Sun, 28 Apr 2019 12:38:18 +0000 (14:38 +0200)] 
Implement convenience functions to examine GDB settings.

The new convenience functions $_gdb_setting and $_gdb_setting_str
provide access to the GDB settings in user-defined commands.
Similarly, $_gdb_maint_setting and $_gdb_maint_setting_str
provide access to the GDB maintenance settings.

The patch was developed following a comment of Eli about the
'set may-call-functions'.  Eli said that user-defined functions
should have a way to change their behavior according to this setting.
Rather than have a specialized $_may_call_functions, this patch
implements a general way to access any GDB setting.

Compared to doing such access via Python 'gdb.parameter' and/or
'gdb.execute("set somesetting tosomevalue"):
* The 'with' command is much better than the above python usage:
  if the user types C-c or an error happens between the set pagination off
  and the python "set pagination on", the above python
  does not restore the original setting.

* Effectively, with the "gdb.parameter" python one liner, it is possible to do
  simple 'if' conditions, such as set and restore pagination.
  But mixing the "python if" within canned
  sequence of commands is cumbersome for non trivial combinations.
  E.g. if several commands have to be done for a certain condition
  accessed from python, I guess something like will be needed:
     python if __some_setting: gdb.execute("some command")
     python if __some_setting: gdb.execute("some other command")
     python if __some_setting: gdb.execute("some different command")
  (without speaking about nested "if-s").

  With the convenience function:
     if $_gdb_setting("some_setting")
        some command
        some other command
        some different command
     end
  Integer settings (for example print elements) will also be more difficult
  to use.
  For example, a user defined function that scans and prints a linked list
  might want to use the value of "set print elements" to stop printing
  the linked list.
  Doing that by mixing python expression/if is likely doable, but seems
  not easy with the above one liners.

So, in summary, the $_gdb_setting and $_gdb_setting_str avoids to have the
heterogeneous mix of python and GDB commands in one single script
(and of course, it works even if python is not configured, but that
must be an unusual setup I guess).

gdb/ChangeLog
2019-10-31  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

* cli/cli-cmds.c (setting_cmd, value_from_setting)
(gdb_setting_internal_fn, gdb_maint_setting_internal_fn)
(str_value_from_setting, gdb_setting_str_internal_fn)
(gdb_maint_setting_str_internal_fn): New functions.
(_initialize_cli_cmds): Define the new convenience functions.
* gdb/cli/cli-setshow.h (get_setshow_command_value_string): Constify.
* gdb/cli/cli-setshow.c (get_setshow_command_value_string): Constify.

5 years agoAlso check for strerror_r in gdbserver
Christian Biesinger [Thu, 31 Oct 2019 22:02:05 +0000 (17:02 -0500)] 
Also check for strerror_r in gdbserver

I forgot to do this in b231e86ac9608056ea837e24d42a878927f5787a

Since safe_strerror is in gdbsupport, gdbserver also needs to
check for strerror_r, although it's less critical since gdbserver
does not use threads as much.

gdb/gdbserver/ChangeLog:

2019-10-31  Christian Biesinger  <cbiesinger@google.com>

* config.in: Regenerate.
* configure: Regenerate.
* configure.ac: Also check for strerror_r.

Change-Id: I6a67c8543cd7a28d6dc94f5986f56abcb55727fe

5 years ago[gdb/testsuite] Remove superfluous 3rd argument from gdb_test call (2)
Tom de Vries [Thu, 31 Oct 2019 22:03:25 +0000 (23:03 +0100)] 
[gdb/testsuite] Remove superfluous 3rd argument from gdb_test call (2)

There's a pattern:
...
gdb_test <command> <pattern> <command>
...
that can be written shorter as:
...
gdb_test <command> <pattern>
...

Detect this pattern in proc gdb_test:
...
     global gdb_prompt
     upvar timeout timeout

     if [llength $args]>2 then {
        set message [lindex $args 2]
+       if { $message == [lindex $args 0] && [llength $args] == 3 } {
+           error "HERE"
+       }
     } else {
         set message [lindex $args 0]
     }
...
and fix all occurrences in some gdb testsuite subdirs.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-31  Tom de Vries  <tdevries@suse.de>

* gdb.arch/amd64-disp-step-avx.exp: Drop superfluous 3rd argument to
gdb_test.
* gdb.arch/amd64-disp-step.exp: Same.
* gdb.asm/asm-source.exp: Same.
* gdb.btrace/buffer-size.exp: Same.
* gdb.btrace/cpu.exp: Same.
* gdb.btrace/enable.exp: Same.
* gdb.dwarf2/count.exp: Same.
* gdb.dwarf2/dw2-ranges-func.exp: Same.
* gdb.dwarf2/dw2-ranges-psym.exp: Same.
* gdb.fortran/vla-datatypes.exp: Same.
* gdb.fortran/vla-history.exp: Same.
* gdb.fortran/vla-ptype.exp: Same.
* gdb.fortran/vla-value.exp: Same.
* gdb.fortran/whatis_type.exp: Same.
* gdb.guile/guile.exp: Same.
* gdb.multi/tids.exp: Same.
* gdb.python/py-finish-breakpoint.exp: Same.
* gdb.python/py-framefilter.exp: Same.
* gdb.python/py-pp-registration.exp: Same.
* gdb.python/py-xmethods.exp: Same.
* gdb.python/python.exp: Same.
* gdb.server/connect-with-no-symbol-file.exp: Same.
* gdb.server/no-thread-db.exp: Same.
* gdb.server/run-without-local-binary.exp: Same.
* gdb.stabs/weird.exp: Same.
* gdb.threads/attach-many-short-lived-threads.exp: Same.
* gdb.threads/thread-find.exp: Same.
* gdb.threads/tls-shared.exp: Same.
* gdb.threads/tls.exp: Same.
* gdb.threads/wp-replication.exp: Same.
* gdb.trace/ax.exp: Same.
* lib/gdb.exp (gdb_test_exact, help_test_raw): Same.

Change-Id: I2fa544c68f8c0099a77e03ff04ddc010eb2b6c7c

5 years agoDon't read agent symbols when disabled
Christian Biesinger [Thu, 31 Oct 2019 00:10:13 +0000 (19:10 -0500)] 
Don't read agent symbols when disabled

This avoids unnecessary work, and becomes important with the patch in
https://sourceware.org/ml/gdb-patches/2019-10/msg01143.html

gdb/ChangeLog:

2019-10-31  Christian Biesinger  <cbiesinger@google.com>

* agent.c (set_can_use_agent): When the setting is turned on,
look up agent symbols if we don't have them yet.
(agent_new_objfile): Don't look up agent symbols when the agent
setting is off.

Change-Id: I6523a5640c95d38299998050a6c620e51096e8ed

5 years agoRegenerate config.in
Christian Biesinger [Thu, 31 Oct 2019 20:38:25 +0000 (15:38 -0500)] 
Regenerate config.in

I forgot to do this in the last commit
(b231e86ac9608056ea837e24d42a878927f5787a)

gdb/ChangeLog:

2019-10-31  Christian Biesinger  <cbiesinger@google.com>

* config.in: Regenerate.

Change-Id: I60946ffd853a59469c35f19ef8012ac6ea88a31c

5 years agoUse strerror_r in safe_strerror if available
Christian Biesinger [Thu, 31 Oct 2019 19:41:19 +0000 (14:41 -0500)] 
Use strerror_r in safe_strerror if available

Also stores the result in a thread-local static variable and
changes the return value to a const char*.

This is already important because Guile creates threads and
Python can create threads, but with the patch series here:
https://gnutoolchain-gerrit.osci.io/r/c/binutils-gdb/+/176
GDB itself will create threads, too.

gdb/ChangeLog:

2019-10-31  Christian Biesinger  <cbiesinger@google.com>

* configure: Regenerate.
* configure.ac: Check for strerror_r.
* gdbsupport/common-utils.h (safe_strerror): Change return value
to const char * and document that this function is now threadsafe.
* gdbsupport/posix-strerror.c (safe_strerror): Make buf
thread_local and call strerror_r, if available.
* utils.c (perror_string): Update.
(print_sys_errmsg): Update.

Change-Id: I81048fbaf148035c221c528727f7efe58ba528eb

5 years ago[ARM] Store exception handling information per-bfd instead of per-objfile
Luis Machado [Thu, 31 Oct 2019 19:30:44 +0000 (16:30 -0300)] 
[ARM] Store exception handling information per-bfd instead of per-objfile

Based on feedback from Tromey, update the use of objfile_key in gdb/arm-tdep.c
to use bfd_key instead. That way we don't have to re-create the exception
handling data all over again if it was done before for the same BFD.

gdb/ChangeLog:

2019-10-31  Luis Machado  <luis.machado@linaro.org>

* arm-tdep.c (arm_exidx_data_key): Use bfd_key instead of
objfile_key.
(arm_exidx_new_objfile): Adjust to use objfile->obfd instead of
objfile to fetch per-bfd data.
(arm_find_exidx_entry): Likewise.

Change-Id: Ia7b3208ea8d788414600fa6d770ac76db0562859

5 years agoConvert int to bool in agent.c
Christian Biesinger [Wed, 30 Oct 2019 21:19:11 +0000 (16:19 -0500)] 
Convert int to bool in agent.c

Also moves an int declaration inside the for loop.

Code cleanup, no change in behavior intended.

gdb/ChangeLog:

2019-10-31  Christian Biesinger  <cbiesinger@google.com>

* gdbsupport/agent.c (debug_agent): Change type to bool.
(use_agent): Likewise.
(all_agent_symbols_look_up): Likewise.
(agent_loaded_p): Change return value to bool.
(agent_look_up_symbols): Update.
(agent_capability_check): Change return value to bool.
* gdbsupport/agent.h (agent_loaded_p): Likewise.
(debug_agent): Change type to bool.
(use_agent): Likewise.
(agent_capability_check): Change return value to bool.

gdb/gdbserver/ChangeLog:

2019-10-31  Christian Biesinger  <cbiesinger@google.com>

* ax.h (debug_agent): Remove duplicate declaration.

Change-Id: Icb28a65fcc8c7108bcd59287e6be66bf56f8ccb5

5 years agoi386; Add .code16gcc fldenv tests
H.J. Lu [Thu, 31 Oct 2019 17:42:04 +0000 (10:42 -0700)] 
i386; Add .code16gcc fldenv tests

* testsuite/gas/i386/general.s: Add .code16gcc fldenv tests.
* testsuite/gas/i386/general.l: Updated.

5 years ago[gdb/testsuite] Remove superfluous 3rd argument from gdb_test call
Tom de Vries [Thu, 31 Oct 2019 16:37:02 +0000 (17:37 +0100)] 
[gdb/testsuite] Remove superfluous 3rd argument from gdb_test call

There's a pattern:
...
gdb_test <command> <pattern> <command>
...
that can be written shorter as:
...
gdb_test <command> <pattern>
...

Detect this pattern in proc gdb_test:
...
     global gdb_prompt
     upvar timeout timeout

     if [llength $args]>2 then {
  set message [lindex $args 2]
+ if { $message == [lindex $args 0] } {
+     error "HERE"
+ }
     } else {
  set message [lindex $args 0]
     }
...
and fix all occurences in gdb.ada.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-31  Tom de Vries  <tdevries@suse.de>

* gdb.ada/array_bounds.exp: Drop superfluous 3rd argument to gdb_test.
* gdb.ada/array_subscript_addr.exp: Same.
* gdb.ada/arrayidx.exp: Same.
* gdb.ada/arrayparam.exp: Same.
* gdb.ada/arrayptr.exp: Same.
* gdb.ada/boolean_expr.exp: Same.
* gdb.ada/call_pn.exp: Same.
* gdb.ada/complete.exp: Same.
* gdb.ada/fixed_cmp.exp: Same.
* gdb.ada/fun_addr.exp: Same.
* gdb.ada/funcall_param.exp: Same.
* gdb.ada/interface.exp: Same.
* gdb.ada/mod_from_name.exp: Same.
* gdb.ada/null_array.exp: Same.
* gdb.ada/packed_array.exp: Same.
* gdb.ada/packed_tagged.exp: Same.
* gdb.ada/print_chars.exp: Same.
* gdb.ada/print_pc.exp: Same.
* gdb.ada/ptype_arith_binop.exp: Same.
* gdb.ada/ptype_field.exp: Same.
* gdb.ada/ptype_tagged_param.exp: Same.
* gdb.ada/rec_return.exp: Same.
* gdb.ada/ref_tick_size.exp: Same.
* gdb.ada/str_ref_cmp.exp: Same.
* gdb.ada/taft_type.exp: Same.
* gdb.ada/tagged.exp: Same.
* gdb.ada/type_coercion.exp: Same.
* gdb.ada/uninitialized_vars.exp: Same.

Change-Id: Ibb84a41573c7f21295f3fd42da9b96534205c5c4

5 years agoAdd support for context sensitive '.arch_extension' to the ARM assembler.
Mihail Ionescu [Thu, 31 Oct 2019 11:22:58 +0000 (11:22 +0000)] 
Add support for context sensitive '.arch_extension' to the ARM assembler.

If the extension is not found in the context sensitive table, the legacy
tables are still checked as a fallback.  This is particularly useful for
Armv8.1-M as it enables  the use of '.arch_extension' with the 'mve' and
'mve.fp' extensions which are not part of the legacy table.

* config/tc-arm.c (selected_ctx_ext_table) New static variable.
(arm_parse_arch): Set context sensitive extension table based on the
chosen base architecture.
(s_arm_arch_extension): Change to lookup extensions in the new context
sensitive tables.
* gas/testsuite/gas/arm/mve-ext.s: New.
* gas/testsuite/gas/arm/mve-ext.d: New.
* gas/testsuite/gas/arm/mvefp-ext.s: New.
* gas/testsuite/gas/arm/mvefp-ext.d: New.

5 years agoAutomatic date update in version.in
GDB Administrator [Thu, 31 Oct 2019 00:00:22 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years ago[gdb/testsuite] Add -early pattern flag for gdb_test_multiple
Tom de Vries [Wed, 30 Oct 2019 16:41:03 +0000 (17:41 +0100)] 
[gdb/testsuite] Add -early pattern flag for gdb_test_multiple

Proc gdb_test_multiple builds up and executes a gdb_expect expression with
pattern/action clauses.  The clauses are either implicit (added by
gdb_test_multiple) or explicit (passed via the gdb_test_multiple parameter
user_code).

However, there are a few implicit clauses which are inserted before the
explicit ones, making sure those take precedence.

Add an -early pattern flag for a gdb_test_multiple user_code clause to specify
that the clause needs to be inserted before any implicit clause.

Using this pattern flag, we can f.i. setup a kfail for an assertion failure
<assert> during gdb_continue_to_breakpoint by the rewrite:
...
gdb_continue_to_breakpoint <msg> <pattern>
...
into:
...
set breakpoint_pattern "(?:Breakpoint|Temporary breakpoint) .* (at|in)"
gdb_test_multiple "continue" "continue to breakpoint: <msg>"  {
   -early -re "internal-error: <assert>" {
       setup_kfail gdb/nnnnn "*-*-*"
       exp_continue
   }
   -re "$breakpoint_pattern <pattern>\r\n$gdb_prompt $" {
       pass $gdb_test_name
   }
}

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-30  Tom de Vries  <tdevries@suse.de>

* lib/gdb.exp (gdb_test_multiple): Handle -early pattern flag.

Change-Id: I376c636b0812be52e7137634b1a4f50bf2b999b6

5 years agoOnly clear the minsym array when necessary
Christian Biesinger [Tue, 29 Oct 2019 22:14:48 +0000 (17:14 -0500)] 
Only clear the minsym array when necessary

The array starts out initialized to zero:
  minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE] {};

So we only need to explicitly clear it if there were previous minsyms
added to it. This patch does that.

gdb/ChangeLog:

2019-10-30  Christian Biesinger  <cbiesinger@google.com>

* minsyms.c (clear_minimal_symbol_hash_tables): New function.
(build_minimal_symbol_hash_tables): Code to clear the table moved
to clear_minimal_symbol_hash_tables.
(minimal_symbol_reader::install): Call clear_minimal_symbol_hash_tables
when needed.

Change-Id: I7da994fe6747f67714e7efe9fdbb0dbc4d6ea532

5 years agoModify the ARNM assembler to accept the omission of the immediate argument for the...
Delia Burduv [Wed, 30 Oct 2019 13:23:35 +0000 (13:23 +0000)] 
Modify the ARNM assembler to accept the omission of the immediate argument for the writeback form of the LDRAA and LDRAB mnemonics

This is a shorthand for the immediate argument being 0, as described here:
  https://developer.arm.com/docs/ddi0596/latest/base-instructions-alphabetic-order/ldraa-ldrab-load-register-with-pointer-authentication

This is because the instructions still have a use with an immediate
argument of 0, unlike loads without the PAC functionality. Currently,
the mnemonics are

  LDRAA Xt, [Xn, #<simm10>]!
  LDRAB Xt, [Xn, #<simm10>]!

After this patch they become

  LDRAA Xt, [Xn {, #<simm10>}]!
  LDRAB Xt, [Xn {, #<simm10>}]!

gas * config/tc-aarch64.c (parse_address_main): Accept the omission of
the immediate argument for ldraa and ldrab as a shorthand for the
immediate being 0.
* testsuite/gas/aarch64/ldraa-ldrab-no-offset.d: New test.
* testsuite/gas/aarch64/ldraa-ldrab-no-offset.s: New test.
* testsuite/gas/aarch64/illegal-ldraa.s: Modified to accept the
writeback form with no offset.
* testsuite/gas/aarch64/illegal-ldraa.s: Removed missing offset
error.

opcodes * aarch64-opc.c (print_immediate_offset_address): Don't print the
immediate for the writeback form of ldraa/ldrab if it is 0.
* aarch64-tbl.h: Updated the documentation for ADDR_SIMM10.
* aarch64-opc-2.c: Regenerated.

5 years agoAdd the ability to the BFD library to read build-ids from core flies.
Keith Seitz [Wed, 30 Oct 2019 12:23:16 +0000 (12:23 +0000)] 
Add the ability to the BFD library to read build-ids from core flies.

* elf-bfd.h (elf_backend_data) <elf_backend_core_find_build_id>:
New field.
(_bfd_elf32_core_find_build_id, _bfd_elf64_core_find_build_id):
New functions.
(elf_read_notes): Add declaration.
* elf.c (elf_read_notes): Move elf-bfd.h.
(_bfd_elf_core_find_build_id): New function.
(bfd_section_from_phdr): Scan core file PT_LOAD segments for
build-id if none is known.
(elf_parse_notes): For core files, scan for notes.
* elfcore.h (elf_core_file_matches_executable_p): If both
BFDs have identical build-ids, then they match.
(_bfd_elf_core_find_build_id): New function.
* elfxx-target.h (elf_backend_core_find_build_id): Define.
(elfNN_bed): Add elf_backend_core_find_build_id.

5 years agoUpdate email address for Palmer Dabbelt.
Nick Clifton [Wed, 30 Oct 2019 10:52:15 +0000 (10:52 +0000)] 
Update email address for Palmer Dabbelt.

      * MAINTAINERS: Change palmer@sifive.com to palmer@dabbelt.com.

5 years agoAdd a --output=<DIR> option to ar to allow the specifying of an output directory.
Fangrui Song [Wed, 30 Oct 2019 10:50:23 +0000 (10:50 +0000)] 
Add a --output=<DIR> option to ar to allow the specifying of an output directory.

* ar.c (emum long option numbers): Declare.  Use to provide
numerical values for long options.
(long_options): Add --output option.
(usage): Mention the --output option.
(open_output_file): New function.  Create a filepath for an output
file and open it.
(extract_file): Use open_output_file().
(open_output_file):
* testsuite/binutils-all/ar.exp: Add a test of the new feature.
* doc/binutils.texi: Document the new feature.
* NEWS: Mention the new feature.

5 years agox86: add tests to cover defaulting of operand sizes for ambiguous insns
Jan Beulich [Wed, 30 Oct 2019 08:09:13 +0000 (09:09 +0100)] 
x86: add tests to cover defaulting of operand sizes for ambiguous insns

Prior to changing the logic in the assembler install tests to make sure
the present defaulting of operand sizes won't get broken. There are a
few anomalies pointed out by this:
- arithmetic insns (add, sub, etc) allow defaulting when their immediate
  fits in (signed) 8 bits, but they fail to assemble with larger values,
- mov, other than arithmetic insns, doesn't allow any defaulting,
- movsx/movzx default to byte sources (in AT&T mode), and their special
  casing needs to be adjusted first
- bt and friends allow defaulting, while shl and friends don't,
- ambiguous AVX and AVX512 insns don't allow defaulting.
This should ultimately all become consistent (perhaps with the exception
some of the SIMD insns); respective tests will be added to the test
cases here as the issues get addressed.

5 years agox86: re-do "shorthand" handling
Jan Beulich [Wed, 30 Oct 2019 08:07:40 +0000 (09:07 +0100)] 
x86: re-do "shorthand" handling

Now that the opcode table gets preprocessed, undo parts of commit
dc821c5f9a ("x86: replace Reg8, Reg16, Reg32, and Reg64"): Have the
preprocessor handle the expansion there, while making the expansions
explicit in i386-gen and the register table.

5 years agox86: slightly rearrange struct insn_template
Jan Beulich [Wed, 30 Oct 2019 08:06:42 +0000 (09:06 +0100)] 
x86: slightly rearrange struct insn_template

This avoids holes between the individual fields, (potentially) shrinking
the overall template table size by 4 bytes per entry.

5 years agox86: drop stray W
Jan Beulich [Wed, 30 Oct 2019 08:05:46 +0000 (09:05 +0100)] 
x86: drop stray W

The flag is used to indicate opcodes which can be switched between byte
and word/dword/qword forms (in a "canonical" way). Obviously it's quite
odd then to see it on insns not allowing for byte operands in the first
place. As a result the opcode bytes need to be adjusted accordingly,
which includes comparisons done in optimize_encoding().

To make re-introduction of such issues less likely have i386-gen
diagnose it (in a generally non-fatal way for now).

5 years agoAutomatic date update in version.in
GDB Administrator [Wed, 30 Oct 2019 00:01:25 +0000 (00:01 +0000)] 
Automatic date update in version.in

5 years agoRemove unused includes in infcmd.c and infrun.c
Simon Marchi [Tue, 29 Oct 2019 21:54:35 +0000 (17:54 -0400)] 
Remove unused includes in infcmd.c and infrun.c

include-what-you-use reported this:

../../../src/binutils-gdb/gdb/infcmd.c should remove these lines:
- #include <signal.h>  // lines 22-22
- #include "cli/cli-decode.h"  // lines 48-48
- #include "cli/cli-utils.h"  // lines 56-56
- #include "event-top.h"  // lines 38-38
- #include "infcall.h"  // lines 57-57
- #include "parser-defs.h"  // lines 39-39

../../../src/binutils-gdb/gdb/infrun.c should remove these lines:
- #include <signal.h>  // lines 37-37
- #include "cli/cli-script.h"  // lines 31-31
- #include "continuations.h"  // lines 54-54
- #include "dictionary.h"  // lines 45-45
- #include "gdbsupport/gdb_wait.h"  // lines 28-28
- #include "interps.h"  // lines 55-55

Remove those includes.

Tested by rebuilding, and by quick inspection that the include fields
were indeed unnecessary.

gdb/ChangeLog:

* infcmd.c: Remove includes.
* infrun.c: Remove includes.

Change-Id: I5e25af54ecd2235960c4127add8f604ddbb19153

5 years agoClean up ada-lang.h
Simon Marchi [Tue, 29 Oct 2019 21:52:24 +0000 (17:52 -0400)] 
Clean up ada-lang.h

This patch cleans up ada-lang.h:

- Some functions just don't exist anymore, remove their declaration
- Some functions are implemented in ada-lang.c and only used there, make
  them static to that file.

I moved some functions higher in the file to avoid having to
forward-declare them, but the implementations are unchanged.

gdb/ChangeLog:

* ada-lang.h (GROW_VECT): Move to ada-lang.c.
(grow_vect): Remove declaration.
(ada_type_of_array): Remove declaration.
(ada_update_initial_language): Remove declaration.
(ada_fold_name): Remove declaration.
(ada_fill_in_ada_prototype): Remove declaration.
(user_select_syms): Remove declaration.
(get_selections): Remove declaration.
(ada_tag_type): Remove declaration.
(ada_value_tag): Remove declaration.
(ada_is_others_clause): Remove declaration.
(ada_in_variant): Remove declaration.
(ada_value_struct_elt): Remove declaration.
(ada_attribute_name): Remove declaration.
(ada_system_address_type): Remove declaration.
* ada-lang.c (ada_watch_location_expression): Make static.
(GROW_VECT): Move here from ada-lang.h.
(grow_vect): Make static.
(ada_update_initial_language): Make static.
(ada_fold_name): Make static.
(ada_type_of_array): Make static.
(encoded_ordered_before): Move up.
(sort_choices): Move up.
(print_signatures): Move up.
(ada_print_symbol_signature): Move up.
(get_selections): Move up and make static.
(user_select_syms): Move up and make static.
(ada_value_struct_elt): Move up and make static.
(ada_tag_type): Make static.
(ada_value_tag): Make static.
(ada_is_others_clause): Make static.
(ada_in_variant): Make static.
(ada_attribute_name): Make static.

Change-Id: If0d46ba87d6585ab674c87244068a19e84718fc9

5 years agoRemove unused includes in ada-*.c files
Simon Marchi [Tue, 29 Oct 2019 21:52:15 +0000 (17:52 -0400)] 
Remove unused includes in ada-*.c files

include-what-you-use reports:

../../../src/binutils-gdb/gdb/ada-lang.c should remove these lines:
- #include <sys/stat.h>  // lines 43-43
- #include <map>  // lines 66-66
- #include "c-lang.h"  // lines 33-33
- #include "demangle.h"  // lines 23-23
- #include "dictionary.h"  // lines 47-47
- #include "gdbsupport/gdb_vecs.h"  // lines 53-53
- #include "psymtab.h"  // lines 58-58

../../../src/binutils-gdb/gdb/ada-lang.c should remove these lines:
- #include <sys/stat.h>  // lines 43-43
- #include <map>  // lines 66-66
- #include "c-lang.h"  // lines 33-33
- #include "demangle.h"  // lines 23-23
- #include "dictionary.h"  // lines 47-47
- #include "gdbsupport/gdb_vecs.h"  // lines 53-53
- #include "psymtab.h"  // lines 58-58

../../../src/binutils-gdb/gdb/ada-valprint.c should remove these lines:
- #include "c-lang.h"  // lines 31-31
- #include "demangle.h"  // lines 26-26
- #include "infcall.h"  // lines 32-32
- #include "objfiles.h"  // lines 33-33
- #include "symtab.h"  // lines 22-22

Remove these includes.  Adding an include for gdbarch.h in
ada-valprint.c was necessary, because gdbarch_byte_order wouldn't be
found anymore.

gdb/ChangeLog:

* ada-lang.c: Remove includes.
* ada-typeprint.c: Remove includes.
* ada-valprint.c: Remove includes.

Change-Id: I07c2f2237ef0ed5fd9aa855d33711d780794fce2

5 years agoaddrmap: use gdb_static_assert for type size assertions
Simon Marchi [Tue, 29 Oct 2019 21:51:36 +0000 (17:51 -0400)] 
addrmap: use gdb_static_assert for type size assertions

These assertions can be done at compile time instead of at runtime.

gdb/ChangeLog:

* addrmap.c: Add static assertions of type size, moved from
_initialize_addrmap.
(_initialize_addrmap): Remove.

Change-Id: If089fc5d620a7168bdcdf967c6c4fecd6696b670

5 years agoChange some arguments to gdb::string_view instead of name+len
Christian Biesinger [Sun, 13 Oct 2019 11:57:14 +0000 (06:57 -0500)] 
Change some arguments to gdb::string_view instead of name+len

Just some code cleanup. This change has a few benefits:
- Shorter argument list in the functions
- If the caller needs to calculate the string, they no longer
  need to explicitly call strlen
- It is easy to pass std::string to this (done in one place
  currently)

This also updates a couple of places that were passing 0/1 to
a bool parameter.

gdb/ChangeLog:

2019-10-29  Christian Biesinger  <cbiesinger@google.com>

* coffread.c (record_minimal_symbol): Update.
(process_coff_symbol): Update.
* dbxread.c (read_dbx_symtab): Update.
* dwarf2read.c (add_partial_symbol): Update.
(fixup_go_packaging): Update.
(load_partial_dies): Update.
(new_symbol): Update.
* elfread.c (record_minimal_symbol): Change signature to use
gdb::string_view instead of name+len.
(elf_symtab_read): Update.
(elf_rel_plt_read): Update.
* mdebugread.c (parse_partial_symbols): Update.
(handle_psymbol_enumerators): Update.
(new_symbol): Update.
* minsyms.c (minimal_symbol_reader::record_full): Change signature
to use gdb::string_view instead of name+len.
* minsyms.h (class minimal_symbol_reader) <record_full>: Likewise.
* psympriv.h (add_psymbol_to_list): Likewise.
* psymtab.c (add_psymbol_to_bcache): Likewise.
(add_psymbol_to_list): Likewise.
* stabsread.c (define_symbol): Update.
* symtab.c (symbol_set_names): Change signature to use gdb::string_view.
* symtab.h (SYMBOL_SET_NAMES): Likewise.
(symbol_set_names): Likewise.
* xcoffread.c (scan_xcoff_symtab): Update.

Change-Id: I2675c6865e0368f9c755a1081088a53aa54dda4c

5 years agoOnly make a nullterminated string if we need to
Christian Biesinger [Tue, 22 Oct 2019 22:25:50 +0000 (17:25 -0500)] 
Only make a nullterminated string if we need to

As of 7bb43059820c5febb4509b15202a93efde442bc6, we no longer need
a nullterminated linkage_name to look up the entry in the hash table.

So this patch makes it so we only make the copy if the entry was
not found.

By auditing all callers of symbol_set_names, I found out that all cases
where the string may not be nullterminated already pass true for COPY_NAME.
So here, I am documenting that as a requirement and am removing the code
that relies on undefined behavior in symbol_set_names (it accessed the string
past the provided length to check for nulltermination). Note that the Ada
case at the beginning of symbol_set_names was already relying on this.

gdb/ChangeLog:

2019-10-29  Christian Biesinger  <cbiesinger@google.com>

* symtab.h (symbol_set_names): Document that copy_name must be
set to true for non-nullterminated strings.
* symtab.c (symbol_set_names): Only make a nullterminated copy of
linkage_name if the entry was not found and we need to demangle.

Change-Id: I183302e1f51483ff6dff0fd5c3b0f32f0f04a5d2

5 years agoReplace bsearch with a std::lower_bound-based search
Christian Biesinger [Mon, 21 Oct 2019 18:08:03 +0000 (13:08 -0500)] 
Replace bsearch with a std::lower_bound-based search

This is more type-safe and can be faster due to inlining and
avoiding overhead from calling through a function pointer.

gdb/ChangeLog:

2019-10-29  Christian Biesinger  <cbiesinger@google.com>

* Makefile.in (HFILES_NO_SRCDIR): Add gdb_binary_search.h.
* dwarf2-frame.c (bsearch_fde_cmp): Update.
(dwarf2_frame_find_fde): Replace bsearch with gdb::binary_search.
* gdbsupport/gdb_binary_search.h: New file.

Change-Id: I07e0a0e333f4062b27fc68d3a3f24881ebc68fd4

5 years agoLoad system gdbinit files from a directory
Christian Biesinger [Sun, 13 Oct 2019 12:12:34 +0000 (07:12 -0500)] 
Load system gdbinit files from a directory

Adds a configure option --with-system-gdbinit-dir to specify a directory
in which to look for gdbinit files.  All files in this directory are
loaded on startup (subject to -n/-nx as usual) as long as the extension
matches a known and enabled scripting language (.gdb/.py/.scm).

This also changes get_ext_lang_of_file to support ".gdb" files, similar
to get_ext_lang_defn's handling of EXT_LANG_GDB.

gdb/ChangeLog:

2019-10-29  Christian Biesinger  <cbiesinger@google.com>

* NEWS: Mention new --with-system-gdbinit-dir option.
* config.in: Regenerate.
* configure: Regenerate.
* configure.ac: Add new option --with-system-gdbinit-dir.
* extension.c (get_ext_lang_of_file): Return extension_language_gdb
for a ".gdb" suffix.
* main.c (get_init_files): Change system_gdbinit argument to
a vector and return the files in SYSTEM_GDBINIT_DIR in
addition to SYSTEM_GDBINIT.
(captured_main_1): Update.
(print_gdb_help): Update.
* top.c (print_gdb_configuration): Also print the value of
SYSTEM_GDBINIT_DIR.

gdb/doc/ChangeLog:

2019-10-29  Christian Biesinger  <cbiesinger@google.com>

* Makefile.in: Also set SYSTEM_GDBINIT_DIR for the info manual
generation.
* gdb.texinfo (many sections): Document new --with-system-gdbinit-dir
option.

Change-Id: If233859ecc21bc6421d589b37cd658a3c7d030f2

5 years agoWhen copying pe format files, copy the dos_message array, rather than re-initiialisin...
Andrew Eikum [Tue, 29 Oct 2019 17:07:03 +0000 (17:07 +0000)] 
When copying pe format files, copy the dos_message array, rather than re-initiialising it.

* libcoff-in.h (struct pe_tdata): Add dos_message field.
* libcoff.h: Regenerate.
* peXXigen.c (_bfd_XXi_only_swap_filehdr_out): Copy the
dos_message field rather than initialising it.
(_bfd_XX_bfd_copy_private_bfd_data_common): Copy the dos_message
field.
* peicode.h (pe_mkobject): Initialise the dos_message field.
(pe_mkobject_hook): Copy the dos_message field.
(pe_bfd_object_p): Copy the dos_message field.

5 years agoFix array overrun when disassembling corrupt TIC30 binaries.
Nick Clifton [Tue, 29 Oct 2019 15:35:30 +0000 (15:35 +0000)] 
Fix array overrun when disassembling corrupt TIC30 binaries.

* tic30-dis.c (print_branch): Correct size of operand array.

5 years agoFix a potential illegal array access in the D30V disassembler.
Nick Clifton [Tue, 29 Oct 2019 10:25:09 +0000 (10:25 +0000)] 
Fix a potential illegal array access in the D30V disassembler.

* d30v-dis.c (print_insn): Check that operand index is valid
before attempting to access the operands array.

5 years agoPrevent a left shift by a negative value when disassembling IA64 binaries.
Nick Clifton [Tue, 29 Oct 2019 10:01:27 +0000 (10:01 +0000)] 
Prevent a left shift by a negative value when disassembling IA64 binaries.

* ia64-opc.c (locate_opcode_ent): Prevent a negative shift when
locating the bit to be tested.

5 years agoFix array overruns in the S12Z disassembler.
Nick Clifton [Tue, 29 Oct 2019 09:17:39 +0000 (09:17 +0000)] 
Fix array overruns in the S12Z disassembler.

* s12z-dis.c (opr_emit_disassembly): Check for illegal register
values.
(shift_size_table): Use a fixed size defined as S12Z_N_SIZES.
(print_insn_s12z):  Check for illegal size values.

5 years agoFix the size of the dos_message field in the internal_extra_pe_filehdr structure...
Andrew Eikum [Tue, 29 Oct 2019 08:02:34 +0000 (08:02 +0000)] 
Fix the size of the dos_message field in the internal_extra_pe_filehdr structure on hosts where sizeof(long) == 8.

* coff/internal.h (struct internal_extra_pe_filehdr): Use ints
instead of longs to hold dos_message.

5 years agoRe: Optimise away eh_frame advance_loc 0
Alan Modra [Tue, 29 Oct 2019 01:05:05 +0000 (11:35 +1030)] 
Re: Optimise away eh_frame advance_loc 0

If we happen to get the fixed and variable parts of the advance_loc
in different frags, bad things happen when subtracting one from a
fr_fix of zero.

PR 25125
* dw2gencfi.c (output_cfi_insn): Don't allow DW_CFA_advance_loc4
to be placed in a different frag to the rs_cfa.

5 years agoAutomatic date update in version.in
GDB Administrator [Tue, 29 Oct 2019 00:00:34 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoAdd a string_view version of startswith
Christian Biesinger [Tue, 1 Oct 2019 18:41:58 +0000 (13:41 -0500)] 
Add a string_view version of startswith

Makes sure that the string is longer than prefix, so that strncmp will
do the right thing even if the string is not null-terminated.

For use in my string_view conversion patch:
https://sourceware.org/ml/gdb-patches/2019-10/msg00030.html
https://gnutoolchain-gerrit.osci.io/r/c/binutils-gdb/+/125

gdb/ChangeLog:

2019-10-28  Christian Biesinger  <cbiesinger@google.com>

* gdbsupport/common-utils.h (startswith): Add an overloaded version
that takes gdb::string_view arguments.

Change-Id: I5389855de2fd70e7065a789a79374b0693651b71

5 years agoFix potentially illegal shift and assign operation in CSKY disassembler.
Nick Clifton [Mon, 28 Oct 2019 16:45:55 +0000 (16:45 +0000)] 
Fix potentially illegal shift and assign operation in CSKY disassembler.

* csky-dis.c (csky_chars_to_number): Check for a negative
count. Use an unsigned integer to construct the return value.

5 years agoFix buffer overrun in TIC30 disassembler.
Nick Clifton [Mon, 28 Oct 2019 16:15:34 +0000 (16:15 +0000)] 
Fix buffer overrun in TIC30 disassembler.

* tic30-dis.c (OPERAND_BUFFER_LEN): Define.  Use as length of
operand buffer.  Set value to 15 not 13.
(get_register_operand): Use OPERAND_BUFFER_LEN.
(get_indirect_operand): Likewise.
(print_two_operand): Likewise.
(print_three_operand): Likewise.
(print_oar_insn): Likewise.

5 years agoStop potential illegal memory access in the NS32K disassembler.
Nick Clifton [Mon, 28 Oct 2019 15:44:23 +0000 (15:44 +0000)] 
Stop potential illegal memory access in the NS32K disassembler.

* ns32k-dis.c (bit_extract): Add sanitiy check of parameters.
(bit_extract_simple): Likewise.
(bit_copy): Likewise.
(pirnt_insn_ns32k): Ensure that uninitialised elements in the
index_offset array are not accessed.

5 years agoPrevent an illegal memory access in the xgate disassembler.
Nick Clifton [Mon, 28 Oct 2019 15:06:32 +0000 (15:06 +0000)] 
Prevent an illegal memory access in the xgate disassembler.

* xgate-dis.c (print_insn): Fix decoding of the XGATE_OP_DYA
operand.

5 years agoAutomatic date update in version.in
GDB Administrator [Mon, 28 Oct 2019 00:00:43 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoAutomatic date update in version.in
GDB Administrator [Sun, 27 Oct 2019 00:02:01 +0000 (00:02 +0000)] 
Automatic date update in version.in

5 years agoAdd some missing casts to suppress implicit cast warnings
John David Anglin [Sat, 26 Oct 2019 20:48:59 +0000 (16:48 -0400)] 
Add some missing casts to suppress implicit cast warnings

PR gas/25121
* config/tc-hppa.c (tc_gen_reloc): Cast some enums to int.
(md_assemble): Likewise.

5 years agoOptimise away eh_frame advance_loc 0
Alan Modra [Sat, 26 Oct 2019 08:08:26 +0000 (18:38 +1030)] 
Optimise away eh_frame advance_loc 0

These can be generated when multiple cfi directives are emitted for an
instruction and the insn frag is closed off between directives, as
happens when listings are enabled.  No doubt the advance_loc of zero
could be avoided by backtracking over frags in dw2gencfi.c before
calling cfi_add_advance_loc, but that seems like more work than
cleaning up afterwards as this patch does.

Noticed when looking at the testcase in PR25125.

PR 25125
* dw2gencfi.c (output_cfi_insn): Don't output DW_CFA_advance_loc+0.
* ehopt.c (eh_frame_estimate_size_before_relax): Return -1 for
an advance_loc of zero.
(eh_frame_relax_frag): Translate fr_subtype of 7 to size -1.
(eh_frame_convert_frag): Handle fr_subtype of 7.  Abort on
unexpected fr_subtype.

5 years ago[gdb] Fix more typos in comments (2)
Tom de Vries [Sat, 26 Oct 2019 07:55:32 +0000 (09:55 +0200)] 
[gdb] Fix more typos in comments (2)

Fix typos in comments.  NFC.

Tested on x86_64-linux.

gdb/ChangeLog:

2019-10-26  Tom de Vries  <tdevries@suse.de>

* aarch64-linux-tdep.c: Fix typos in comments.
* aarch64-tdep.c: Same.
* ada-lang.c: Same.
* amd64-nat.c: Same.
* arc-tdep.c: Same.
* arch/aarch64-insn.c: Same.
* block.c: Same.
* breakpoint.h: Same.
* btrace.h: Same.
* c-varobj.c: Same.
* cli/cli-decode.c: Same.
* cli/cli-script.c: Same.
* cli/cli-utils.h: Same.
* coff-pe-read.c: Same.
* coffread.c: Same.
* compile/compile-cplus-symbols.c: Same.
* compile/compile-object-run.c: Same.
* completer.c: Same.
* corelow.c: Same.
* cp-support.c: Same.
* demangle.c: Same.
* dwarf-index-write.c: Same.
* dwarf2-frame.c: Same.
* dwarf2-frame.h: Same.
* eval.c: Same.
* frame-base.h: Same.
* frame.h: Same.
* gdbcmd.h: Same.
* gdbtypes.h: Same.
* gnu-nat.c: Same.
* guile/scm-objfile.c: Same.
* i386-tdep.c: Same.
* i386-tdep.h: Same.
* infcall.c: Same.
* infcall.h: Same.
* linux-nat.c: Same.
* m68k-tdep.c: Same.
* macroexp.c: Same.
* memattr.c: Same.
* mi/mi-cmd-disas.c: Same.
* mi/mi-getopt.h: Same.
* mi/mi-main.c: Same.
* minsyms.c: Same.
* nat/aarch64-sve-linux-sigcontext.h: Same.
* objfiles.h: Same.
* ppc-linux-nat.c: Same.
* ppc-linux-tdep.c: Same.
* ppc-tdep.h: Same.
* progspace.h: Same.
* prologue-value.h: Same.
* python/py-evtregistry.c: Same.
* python/py-instruction.h: Same.
* record-btrace.c: Same.
* record-full.c: Same.
* remote.c: Same.
* rs6000-tdep.c: Same.
* ser-tcp.c: Same.
* sol-thread.c: Same.
* sparc-sol2-tdep.c: Same.
* sparc64-tdep.c: Same.
* stabsread.c: Same.
* symfile.c: Same.
* symtab.h: Same.
* target.c: Same.
* tracepoint.c: Same.
* tui/tui-data.h: Same.
* tui/tui-io.c: Same.
* tui/tui-win.c: Same.
* tui/tui.c: Same.
* unittests/rsp-low-selftests.c: Same.
* user-regs.h: Same.
* utils.c: Same.
* utils.h: Same.
* valarith.c: Same.
* valops.c: Same.
* valprint.c: Same.
* valprint.h: Same.
* value.c: Same.
* value.h: Same.
* varobj.c: Same.
* x86-nat.h: Same.
* xtensa-tdep.c: Same.

gdb/gdbserver/ChangeLog:

2019-10-26  Tom de Vries  <tdevries@suse.de>

* linux-aarch64-low.c: Fix typos in comments.
* linux-arm-low.c: Same.
* linux-low.c: Same.
* linux-ppc-low.c: Same.
* proc-service.c: Same.
* regcache.h: Same.
* server.c: Same.
* tracepoint.c: Same.
* win32-low.c: Same.

gdb/stubs/ChangeLog:

2019-10-26  Tom de Vries  <tdevries@suse.de>

* ia64vms-stub.c: Fix typos in comments.
* m32r-stub.c: Same.
* m68k-stub.c: Same.
* sh-stub.c: Same.

gdb/testsuite/ChangeLog:

2019-10-26  Tom de Vries  <tdevries@suse.de>

* gdb.base/bigcore.c: Fix typos in comments.
* gdb.base/ctf-ptype.c: Same.
* gdb.base/long_long.c: Same.
* gdb.dwarf2/dw2-op-out-param.S: Same.
* gdb.python/py-evthreads.c: Same.
* gdb.reverse/i387-stack-reverse.c: Same.
* gdb.trace/tfile.c: Same.
* lib/compiler.c: Same.
* lib/compiler.cc: Same.

Change-Id: I8573d84a577894270179ae30f46c48d806fc1beb

5 years agosort_gnu_build_notes fix
Alan Modra [Sat, 26 Oct 2019 02:39:44 +0000 (13:09 +1030)] 
sort_gnu_build_notes fix

* objcopy.c (sort_gnu_build_notes): Correct sort of deleted
note2.

5 years agoAutomatic date update in version.in
GDB Administrator [Sat, 26 Oct 2019 00:00:44 +0000 (00:00 +0000)] 
Automatic date update in version.in

5 years agoelfedit: Report unknown x86 feature
H.J. Lu [Fri, 25 Oct 2019 22:13:21 +0000 (15:13 -0700)] 
elfedit: Report unknown x86 feature

Report unknown x86 feature:

$ ./elfedit --disable-x86-feature foo a.out
elfedit: Error: Unknown x86 feature: foo
$

* elfedit.c (elf_x86_feature): Report unknown x86 feature.

5 years agoelfedit.c: Replace BYTE_PUT with byte_put
H.J. Lu [Fri, 25 Oct 2019 22:06:39 +0000 (15:06 -0700)] 
elfedit.c: Replace BYTE_PUT with byte_put

Since BYTE_PUT is defined as

 #define BYTE_PUT(field, val) byte_put (field, val, sizeof (field))

use byte_put, instead of BYTE_PUT, to put 4-byte bitmask at ptr with
"byte_put (ptr, bitmask, 4)", instead of "BYTE_PUT (ptr, bitmask)", to
work with "unsigned char *ptr".

* elfedit.c (update_gnu_property): Replace BYTE_PUT with byte_put.

5 years agoFix find_charset_names.
Ali Tamur [Mon, 21 Oct 2019 23:34:19 +0000 (16:34 -0700)] 
Fix find_charset_names.

The patch f2aec7f6d14 changed the return type of relocate_gdb_directory to
std::string, but the change is not reflected in find_charset_names function.
(Probably missed because the broken code is behind an #ifdef).

gdb/ChangeLog

* charset.c (find_charset_names): Reflect API change.

5 years agoRevert unintentional change in symtab.c
Christian Biesinger [Fri, 25 Oct 2019 19:46:40 +0000 (14:46 -0500)] 
Revert unintentional change in symtab.c

In the previous commit, I accidentally changed the wrong line;
this reverts it to what it should be.

gdb/ChangeLog:

2019-10-25  Christian Biesinger  <cbiesinger@google.com>

* symtab.c (symbol_set_names): Revert unintentional change in the
Ada case.

Change-Id: I9abf174927687e74c7435bd4607aab7f248c6e79

5 years agoDon't make an extra copy + allocation of the demangled name
Christian Biesinger [Sun, 13 Oct 2019 11:56:58 +0000 (06:56 -0500)] 
Don't make an extra copy + allocation of the demangled name

We can just keep around the malloc()-ed name we got from bfd and free
it later.

gdb/ChangeLog:

2019-10-25  Christian Biesinger  <cbiesinger@google.com>

* symtab.c (struct demangled_name_entry): Change demangled name
to a unique_xmalloc_ptr<char>, now that we don't allocate it as
part of the struct anymore.
(symbol_set_names): No longer obstack allocate + copy the demangled
name, just store the allocated name from bfd.

Change-Id: Ie6ad50e1e1e73509f55d756f0a437897bb93e3b0

5 years agoImprove objcopy's note mergeing capabilities.
Nick Clifton [Fri, 25 Oct 2019 15:46:07 +0000 (16:46 +0100)] 
Improve objcopy's note mergeing capabilities.

* objcopy.c (struct merged_note_section): New structure.  Used to
chain together details of mergeable note sections.
(is_merged_note_section): Rename to is_megreable_note_section and
return true for note sections that use GNU_BUILD_ATTRS_SECTION_NAME
as a prefix.
(num_bytes): Delete
(objcoopy_internal_note): Add padded_namesz field.
(DEBUG_MERGE): New macro.  Set to non-zero to enable debugging of
the note merging code.
(gap_exists): Rename to overlaps_or_adjoins and return TRUE for
overlapping notes or adjoining notes.
(contained_by, is_deleted_note, is_version_note)
(compare_gnu_build_notes, sort_gnu_build_notes): New functions.
(merge_gnu_build_notes):  Rework.  Sort notes into a mergeable
order first.  Merge them.  Then sort them into an ascending
address order before writing them out.
(copy_object): Handle more than one mergeable note section.
* testsuite/binutils-all/note-2-32.d: Update for new merging
behaviour.
* testsuite/binutils-all/note-2-32.s: Likewise.
* testsuite/binutils-all/note-2-64.d: Likewise.
* testsuite/binutils-all/note-2-64.s: Likewise.
* testsuite/binutils-all/note-3-32.d: Likewise.
* testsuite/binutils-all/note-3-32.s: Likewise.
* testsuite/binutils-all/note-3-64.d: Likewise.
* testsuite/binutils-all/note-3-64.s: Likewise.
* testsuite/binutils-all/note-4-32.d: Likewise.
* testsuite/binutils-all/note-4-32.s: Likewise.
* testsuite/binutils-all/note-4-64.d: Likewise.
* testsuite/binutils-all/note-4-64.s: Likewise.
* testsuite/binutils-all/note-6-32.s: New test source file.
* testsuite/binutils-all/note-6-64.s: New test source file.
* testsuite/binutils-all/note-6-32.d: New test driver file.
* testsuite/binutils-all/note-6-64.d: New test driver file.
* testsuite/binutils-all/objcopy.exp: Run the new test.

5 years agoFix potential undefined behaviour in the RX disassembler.
Nick Clifton [Fri, 25 Oct 2019 15:10:04 +0000 (16:10 +0100)] 
Fix potential undefined behaviour in the RX disassembler.

* rx-dis.c (print_insn_rx): Use parenthesis to ensure correct
access to opcodes.op array element.

5 years agoAllow out-of-order reads of CIEs
Tom Tromey [Tue, 8 Oct 2019 20:35:24 +0000 (14:35 -0600)] 
Allow out-of-order reads of CIEs

Currently gdb has an assertion that requires CIEs to be read in the
order in which they appear in the debug info:

   gdb_assert (n < 1
               || cie_table->entries[n - 1]->cie_pointer < cie->cie_pointer);

This assertion ensures that the table will be sorted, which is
important because it is later searched using bsearch.

However, a customer provided an executable that causes this assertion
to trigger.  This executable causes decode_frame_entry_1 to call
decode_frame_entry to find the CIE, resulting in an out-of-order read.

I don't know a good way to construct a reproducer, but this can happen
if the FDE appears before its CIE.  See
https://sourceware.org/bugzilla/show_bug.cgi?id=16563

This patch fixes the problem by storing CIEs in an unordered map.  The
CIE table is discarded after the frame section is parsed, so this
seemed both simple and straightforward.

gdb/ChangeLog
2019-10-25  Tom Tromey  <tromey@adacore.com>

* dwarf2-frame.c (dwarf2_cie_table): Now a typedef.
(bsearch_cie_cmp, add_cie): Remove.
(find_cie): Reimplement.
(decode_frame_entry_1, decode_frame_entry): Change type.  Update.
(dwarf2_build_frame_info): Update.

Change-Id: I4a99597fa4b1398a9d105b683a36d992d506485c

5 years agogdbserver does not need xstrdup
Tom Tromey [Thu, 29 Aug 2019 14:45:06 +0000 (10:45 -0400)] 
gdbserver does not need xstrdup

gdbserver has its own implementation of xstrdup.  However, because
gdbserver links against libiberty now, I think this is not needed.
This patch removes it.

gdb/gdbserver/ChangeLog
2019-10-25  Tom Tromey  <tromey@adacore.com>

* utils.c (xstrdup): Remove.

Change-Id: I2aa56d18d0f9af8e70a00dff431d2fda5705a5d5

5 years agoPR25125, relaxation chooses wrong branch size
Alan Modra [Fri, 25 Oct 2019 09:16:24 +0000 (19:46 +1030)] 
PR25125, relaxation chooses wrong branch size

The patch I made for PR12049 didn't test for a "negative" branch
properly.  "if (target < address)" ought to have been
"if (target < address + fragP->fr_fix)".  Rather than making that
change, this patch adds fragP->fr_fix into address earlier.  The patch
also avoids running into a bad interaction with the m68k
md_prepare_relax_scan by returning zero growth immediately, since the
adjusted target expression would result in a zero "aim".

PR gas/25125
PR gas/12049
* write.c (relax_frag): Correct calculation of delta for
positive branches where "stretch" would make the branch
negative.  Return zero immediately in that case.  Correct
TC_PCREL_ADJUST comment.

5 years ago[gdb/testsuite] Use -wrap and $gdb_test_name in gdb_test_multiple calls (2)
Tom de Vries [Fri, 25 Oct 2019 08:48:12 +0000 (10:48 +0200)] 
[gdb/testsuite] Use -wrap and $gdb_test_name in gdb_test_multiple calls (2)

Make gdb_test_multiple calls shorter by using new gdb_test_multiple variable
$gdb_test_name and new gdb_test_multiple pattern flag -wrap.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-25  Tom de Vries  <tdevries@suse.de>

* gdb.reverse/sigall-precsave.exp: Use -wrap and $gdb_test_name in
gdb_test_multiple calls.
* gdb.reverse/sigall-reverse.exp: Same.
* gdb.reverse/solib-precsave.exp: Same.
* gdb.reverse/solib-reverse.exp: Same.
* gdb.reverse/until-precsave.exp: Same.
* gdb.reverse/until-reverse.exp: Same.

Change-Id: I67bb327d069dbc439410996bcfe6c7f905b2ca52

5 years agoPR4499, assign file positions assumes segment offsets increasing
Alan Modra [Wed, 23 Oct 2019 07:10:51 +0000 (17:40 +1030)] 
PR4499, assign file positions assumes segment offsets increasing

This rewrites much of assign_file_positions_for_non_load_sections to
allow objcopy and strip to handle cases like that in PR4499 where
program headers were not in their usual position immediately after the
ELF file header, and PT_LOAD headers were not sorted by paddr.

PR 4499
include/
* elf/internal.h (struct elf_segment_map): Delete header_size.
Add no_sort_lma and idx.
bfd/
* elf-nacl.c (nacl_modify_segment_map): Set no_sort_lma for all
PT_LOAD segments.
* elf32-spu.c (spu_elf_modify_segment_map): Likewise on overlay
PT_LOAD segments.
* elf.c (elf_sort_segments): New function.
(assign_file_positions_except_relocs): Use shortcuts to elfheader
and elf_tdata.  Seek to e_phoff not sizeof_ehdr to write program
headers.  Move PT_PHDR check..
(assign_file_positions_for_non_load_sections): ..and code setting
PT_PHDR p_vaddr and p_paddr, and code setting __ehdr_start value..
(assign_file_positions_for_load_sections): ..to here.  Sort
PT_LOAD headers.  Delete header_pad code.  Use actual number of
headers rather than allocated in calculating size for program
headers.  Don't assume program headers follow ELF file header.
Simplify pt_load_count code.  Only set "off" for PT_LOAD or
PT_NOTE in cores.
(rewrite_elf_program_header): Set p_vaddr_offset for segments
that include file and program headers.
(copy_elf_program_header): Likewise, replacing header_size code.

5 years agoreadelf PT_PHDR check
Alan Modra [Fri, 25 Oct 2019 01:51:35 +0000 (12:21 +1030)] 
readelf PT_PHDR check

When PT_PHDR isn't covered by a PT_LOAD header, p_vaddr in PT_PHDR
isn't valid but the value might just pass a vaddr test.  So test
p_offset as well.

* readelf.c (process_program_headers): Check PT_PHDR p_offset
as well as p_vaddr.  Use p_filesz, not p_memsz, in vaddr test.

5 years agoAutomatic date update in version.in
GDB Administrator [Fri, 25 Oct 2019 00:01:28 +0000 (00:01 +0000)] 
Automatic date update in version.in

5 years agoCall forget_cached_source_info to clear the stale source cache
H.J. Lu [Thu, 24 Oct 2019 22:43:21 +0000 (15:43 -0700)] 
Call forget_cached_source_info to clear the stale source cache

Clear the stale source cache when re-reading symbols.

PR gdb/25126
* symfile.c (reread_symbols): Call forget_cached_source_info to
clear the stale source cache.

5 years agoRemove python_has_threads check in configure.ac
Christian Biesinger [Thu, 24 Oct 2019 18:51:55 +0000 (13:51 -0500)] 
Remove python_has_threads check in configure.ac

The only use of python_has_threads has been removed in
commit 404f29021abaef86a341663444fb069eb1f0282a

gdb/ChangeLog:

2019-10-24  Christian Biesinger  <cbiesinger@google.com>

* configure: Rebuild.
* configure.ac: Remove code that sets python_has_threads.

Change-Id: I75f1b873562bc2abc6f2db17699a3e82fcfd2de3

5 years agoSimplify Python checks in configure.ac
Christian Biesinger [Wed, 23 Oct 2019 22:00:51 +0000 (17:00 -0500)] 
Simplify Python checks in configure.ac

The version checking code is not necessary. It is only used to define
HAVE_LIBPYTHON2_6 or HAVE_LIBPYTHON2_7, which is not used anywhere.

If a version check is desired, the PY_{MAJOR,MINOR}_VERSION macro from
the Python headers can be (and is) used, which does not require updating
configure.ac whenever a new Python version is released.

gdb/ChangeLog:

2019-10-24  Christian Biesinger  <cbiesinger@google.com>

* config.in: Regenerate.
* configure: Regenerate.
* configure.ac: Remove the code that uses sed to get the python
version and defines HAVE_LIBPYTHON2_6 / HAVE_LIBPYTHON2_7.

Change-Id: I07073870d9040c2bc8519882c8b3c1368edd4513

5 years ago[gdb/testsuite] Add -wrap pattern flag to gdb_test_multiple
Tom de Vries [Thu, 24 Oct 2019 16:43:46 +0000 (18:43 +0200)] 
[gdb/testsuite] Add -wrap pattern flag to gdb_test_multiple

Currently, in order to rewrite:
...
gdb_test <command> <pattern> <message>
...
using gdb_test_multiple, we get:
...
gdb_test_multiple <command> <message> {
    -re "\[\r\n\]*(?:<pattern>)\[\r\n\]+$gdb_prompt $" {
     pass $gdb_test_name
    }
}
...

Add a '-wrap pattern flag to gdb_test_multiple, that wraps the regexp
pattern as gdb_test wraps its message argument.

This allows us to rewrite into the more compact:
...
gdb_test_multiple <command> <message> {
    -re -wrap <pattern> {
        pass $gdb_test_name
    }
}
...

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-10-24  Tom de Vries  <tdevries@suse.de>

* lib/gdb.exp (gdb_test_multiple): Add -wrap pattern flag.
* gdb.reverse/step-precsave.exp: Rewrite gdb_test_multiple containing
kfail using -wrap pattern flag and convenience variable
gdb_test_name.

Change-Id: Ie42c97d5ab7acf6db351299ccd23a83540fe6e1a

5 years agogdb/python: Return None from Progspace.block_for_pc on error
Andrew Burgess [Wed, 23 Oct 2019 12:24:02 +0000 (13:24 +0100)] 
gdb/python: Return None from Progspace.block_for_pc on error

The documentation for Progspace.block_for_pc says:

  Return the innermost gdb.Block containing the given pc value. If the
  block cannot be found for the pc value specified, the function will
  return None.

However, the implementation actually throws an error for invalid
addresses, like this:

    (gdb) python print gdb.current_progspace ().block_for_pc (1)
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
    RuntimeError: Cannot locate object file for block.
    Error while executing Python code.
    (gdb)

This has been the behaviour since the command was first added (when
the documentation was still as above) in this commit:

    commit f3e9a8177c41893858fce2bdf339dbe90b3a4ef5
    Date:   Wed Feb 24 21:18:28 2010 +0000

Since that commit the code in question has moved around, but the
important parts are largely unchanged.  The function in question is
now in py-progspace.c:pspy_block_for_pc.

Examining the code shows that the real state is more complex than just
the function throws an error instead of returning None, instead the
real situation is:

  1. If we can't find a compilation unit for the $pc value then we
  throw an error, but

  2. If we can find a compilation unit, but can't find a block within
  the compilation unit for the $pc then return None.

I suspect for most users of the Python API this distinction is
irrelevant, and I propose that we standardise on one single failure
mechanism.

Given the function can currently return None in some cases, and is
documented to return None on error, I propose we make that the case
for all error paths, which is what this patch does.

As the Progspace.block_for_pc method is currently untested, I've added
some basic tests including for a call with an invalid $pc.

This is potentially an API breaking change, though an undocumented
part of the API.  Also, users should have been checking and handling a
None return value anyway, so my hope is that this shouldn't be too
disruptive.

gdb/ChangeLog:

* python/py-progspace.c (pspy_block_for_pc): Return None for all
error paths.

gdb/testsuite/ChangeLog:

* gdb.python/py-progspace.exp: Add tests for the
Progspace.block_for_pc method.

Change-Id: I9cea8d2132902bcad0013d1fd39080dd5423cc57

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

5 years agoFix opcodes includes
Tom Tromey [Sun, 6 Oct 2019 00:27:29 +0000 (18:27 -0600)] 
Fix opcodes includes

Now that gdb can unconditionally use a -I pointing at the top of the
source tree, we can remove the ugly "../opcodes/" formulation that was
needed earlier.  This patch adds the -I and cleans up these includes.

gdb/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

* arc-tdep.c: Remove ".." from include.
* frv-tdep.c: Remove ".." from include.
* lm32-tdep.c: Remove ".." from include.
* microblaze-tdep.c: Remove ".." from include.
* or1k-tdep.h: Remove ".." from include.
* s12z-tdep.c: Remove ".." from include.
* Makefile.in (OPCODES_CFLAGS): Add comment.
(TOP_CFLAGS): New variable.
(INTERNAL_CFLAGS_BASE): Add TOP_CFLAGS.

Change-Id: I21428726d55f9fab0c9da90b56f6664f258cf91a

5 years agoMove readline to the readline/readline subdirectory
Tom Tromey [Sat, 5 Oct 2019 22:39:44 +0000 (16:39 -0600)] 
Move readline to the readline/readline subdirectory

readline turns out to be a bit of a stumbling block for the project to
move gdbsupport (and then gdbserver) to the top-level.

The issue is that readline headers are intended to be included with
names like "readline/readline.h".  To support this, gdb effectively
adds a -I option pointing to the top-level source directory -- but,
importantly, this option is not used when the system readline is used.

For gdbsupport, a -I option like this would always be needed, but that
in turn would break the system readline case.  This was PR build/17077,
fixed in commit a8a5dbcab8df0b3a9e04745d4fe8d64740acb323.

Previously, we had discussed this on the gdb-patches list in terms of
removing readline from the tree

    https://sourceware.org/ml/gdb-patches/2019-09/msg00317.html

However, Eli expressed some concerns, and Joel did as well (off-list).

Given those concerns, and the fact that a patch-free local readline is
relatively new in gdb (it was locally patched for years), I changed my
mind and decided to handle this situation by moving the readline
sources down a level.

That is, upstream readline is now in readline/readline, and the
top-level readline directory just contains the minimal configury
needed to build that.

This fixes the problem because, when gdb unconditionally adds a
-I$(top_srcdir), this will not find readline headers.  A separate -I
will be needed instead, which is exactly what's needed for
--with-system-readline.

gdb/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

* Makefile.in (READLINE_DIR): Update.

gdb/doc/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

* Makefile.in (READLINE_DIR): Update.

readline/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

Move old contents to readline/ subdirectory.
* aclocal.m4, configure, configure.ac, .gitignore, Makefile.am,
Makefile.in, README: New files.

Change-Id: Ice156a2ee09ea68722b48f64d97146d7428ea9e4

5 years agoinfcall: refactor 'call_function_by_hand_dummy'
Tankut Baris Aktemur [Wed, 23 Oct 2019 18:58:42 +0000 (20:58 +0200)] 
infcall: refactor 'call_function_by_hand_dummy'

Extract out the code region that reserves stack space to a separate
function.

Fix the comment of 'call_function_by_hand_dummy' to remove reference
to the NARGS argument that was removed in commit (e71585ffe2e "Use
gdb:array_view in call_function_by_hand & friends").

gdb/ChangeLog:
2019-10-23  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

* infcall.c (call_function_by_hand_dummy): Fix the function
comment.  And extract out a code section into...
(reserve_stack_space): ...this new function.

Change-Id: I8938ef4134aff68a0a21724aaa2406bfe453438a

5 years agoinfcall: remove unused parameter in 'value_arg_coerce'
Tankut Baris Aktemur [Wed, 23 Oct 2019 18:40:02 +0000 (20:40 +0200)] 
infcall: remove unused parameter in 'value_arg_coerce'

Remove the unused SP parameter from the auxiliary function
'value_arg_coerce'.

gdb/ChangeLog:
2019-10-23  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

* infcall.c (value_arg_coerce): Remove an unused parameter.
(call_function_by_hand_dummy): Update the call to
'value_arg_coerce'.

Change-Id: If324a1dda3fa5d4c145790b92bd3f656c00296f4

5 years agoinfcall: move assertions in 'call_function_by_hand_dummy' to an earlier spot
Tankut Baris Aktemur [Wed, 23 Oct 2019 18:40:02 +0000 (20:40 +0200)] 
infcall: move assertions in 'call_function_by_hand_dummy' to an earlier spot

This is a refactoring that performs type assertions on the callee
function at the beginning of 'call_function_by_hand_dummy' rather than
at a later point so that

- the checks are grouped together at the beginning of the function for
improved readability, and

- we don't have to align and push things on the stack only to find out
later that the function call is illegal.

gdb/ChangeLog:
2019-10-23  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

* infcall.c (call_function_by_hand_dummy): Refactor.

Change-Id: I411ac083ac6a9ee6eb93c4b82393a81a4fc927be

5 years agoAdd myself to the gdb/MAINTAINERS write-after-approval list
Tankut Baris Aktemur [Wed, 23 Oct 2019 18:40:01 +0000 (20:40 +0200)] 
Add myself to the gdb/MAINTAINERS write-after-approval list

gdb/ChangeLog:
2019-10-23  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

* MAINTAINERS (Write After Approval): Add Tankut Baris Aktemur.

5 years agoAdd a note for how to get the list of threads
Christian Biesinger [Tue, 22 Oct 2019 23:17:24 +0000 (18:17 -0500)] 
Add a note for how to get the list of threads

It's not immediately obvious how to get the list of threads,
so add a note about that in the "Threads in Python" section.

gdb/doc/ChangeLog:

2019-10-23  Christian Biesinger  <cbiesinger@google.com>

* python.texi (Threads In Python): Add a note for how to get the
list of threads.

Change-Id: I0fef8a7aff161fc347c09052319048c907a6e8c3

5 years agoCheck for sigprocmask in common.m4
Tom Tromey [Fri, 18 Oct 2019 02:51:44 +0000 (20:51 -0600)] 
Check for sigprocmask in common.m4

I noticed that gdbsupport uses HAVE_SIGPROCMASK, but common.m4 does
not check for it.  This means that gdbserver may not compile some
gdbsupport code properly.  This patch fixes this error.

gdb/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

* configure: Rebuild.
* configure.ac: Don't check for sigprocmask.
* gdbsupport/common.m4 (GDB_AC_COMMON): Check for sigprocmask.

gdb/gdbserver/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

* configure, config.in: Rebuild.

Change-Id: I2c0a4dd2c376507b9483b38707a242382faa8163

5 years agoUse m4_include, not sinclude in .m4 files
Tom Tromey [Sat, 28 Sep 2019 12:02:06 +0000 (06:02 -0600)] 
Use m4_include, not sinclude in .m4 files

Pedro pointed out that sinclude does not error if a file is missing.
This patch changes gdb to only use m4_include, which seems more
correct.

gdb/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

* configure: Rebuild.
* acinclude.m4: Use m4_include, not sinclude.

gdb/gdbserver/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

* configure: Rebuild.
* acinclude.m4: Use m4_include, not sinclude.

gdb/testsuite/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

* configure: Rebuild.
* aclocal.m4: Use m4_include, not sinclude.

Change-Id: I970362e0af7875f9f72796401126acf0ff6dba11

5 years agoFix typo in RX disassembler error messages.
Nick Clifton [Wed, 23 Oct 2019 09:17:21 +0000 (10:17 +0100)] 
Fix typo in RX disassembler error messages.

* rx-dis.c (get_register_name): Fix spelling typo in error
message.
(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)
(get_opsize_name, get_size_name): Likewise.

5 years ago[gdb/breakpoints] Fix fullname.exp when run from symlink dir
Tom de Vries [Wed, 23 Oct 2019 07:33:46 +0000 (09:33 +0200)] 
[gdb/breakpoints] Fix fullname.exp when run from symlink dir

I run into this error with gdb.base/fullname.exp:
...
(gdb) file /data/gdb_versions/devel/build/gdb/testsuite/outputs/\
  gdb.base/fullname/fullname
Reading symbols from /data/gdb_versions/devel/build/gdb/testsuite/outputs/\
  gdb.base/fullname/fullname...
(gdb) break /data/gdb_versions/devel/build/gdb/testsuite/\
  outputs/gdb.base/fullname/tmp-fullname.c:21
No source file named /data/gdb_versions/devel/build/gdb/testsuite/outputs/\
  gdb.base/fullname/tmp-fullname.c.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) FAIL: gdb.base/fullname.exp: set breakpoint by full path before loading symbols - built relative
...

The FAIL is due to this comparison in iterate_over_some_symtabs failing:
...
481                   if (FILENAME_CMP (real_path, fullname) == 0)
(gdb) p real_path
$2 = 0x1a201f0 "/data/gdb_versions/devel/build/gdb/testsuite/outputs/\
  gdb.base/fullname/tmp-fullname.c"
(gdb) p fullname
$3 = 0x1a1de80 "/home/vries/gdb_versions/devel/build/gdb/testsuite/outputs/\
  gdb.base/fullname/tmp-fullname.c"
...

The difference in pathnames is due to having a symlink dir:
...
$ ls -la /home/vries/gdb_versions
lrwxrwxrwx 1 vries users 18 26 jun  2018 /home/vries/gdb_versions -> /data/gdb_versions
...
and the test passses when eliminating it:
...
$ ( cd $(pwd -P); make check RUNTESTFLAGS=gdb.base/fullname.exp )
...

The FAIL is a regression from commit a0c1ffedcf1 "Only compute realpath when
basenames_may_differ is set".  Before, find_and_open_source was returning a
real-path, resulting in variable 'fullname' being the same as varible
'real_path' in the comparison listed above.  But after, that's no longer the
case.

Fix the FAIL by applying gdb_realpath on the fullname variable before the
comparison.

Tested on x86_64-linux.

I wasn't able to write a test-case.  The FAIL starts at:
...
$ cd build/gdb
$ mv testsuite testsuite.bla
$ ln -s testsuite.bla testsuite
...
but already this doesn't trigger it anymore:
...
$ cd build/gdb/outputs
$ mv outputs outputs.bla
$ ln -s outputs.bla outputs
...

gdb/ChangeLog:

2019-10-23  Tom de Vries  <tdevries@suse.de>

PR breakpoints/24687
* symtab.c (iterate_over_some_symtabs): Apply gdb_realpath on fullname.

Change-Id: I1ace62a234458781e958980f3b425edf1490df27

5 years agoAutomatic date update in version.in
GDB Administrator [Wed, 23 Oct 2019 00:00:20 +0000 (00:00 +0000)] 
Automatic date update in version.in

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