This adds "suspend" and "resume" methods to windows_thread_info, and
changes gdb and gdbserver to share this code.
gdb/ChangeLog
2020-04-08 Tom Tromey <tromey@adacore.com>
* windows-nat.c (thread_rec): Use windows_thread_info::suspend.
(windows_continue): Use windows_continue::resume.
* nat/windows-nat.h (struct windows_thread_info) <suspend,
resume>: Declare new methods.
* nat/windows-nat.c: New file.
* configure.nat (NATDEPFILES): Add nat/windows-nat.o when needed.
gdbserver/ChangeLog
2020-04-08 Tom Tromey <tromey@adacore.com>
* win32-low.c (win32_require_context, suspend_one_thread): Use
windows_thread_info::suspend.
(continue_one_thread): Use windows_thread_info::resume.
* configure.srv (srv_tgtobj): Add windows-nat.o when needed.
This changes a couple of fields of windows_thread_info to have type
"bool". It also updates the comment of another field, to clarify the
possible values it can hold.
gdb/ChangeLog
2020-04-08 Tom Tromey <tromey@adacore.com>
* windows-nat.c (thread_rec)
(windows_nat_target::fetch_registers): Update.
* nat/windows-nat.h (struct windows_thread_info) <suspended>:
Update comment.
<debug_registers_changed, reload_context>: Now bool.
gdbserver/ChangeLog
2020-04-08 Tom Tromey <tromey@adacore.com>
* win32-i386-low.c (update_debug_registers)
(i386_prepare_to_resume, i386_thread_added): Update.
This adds a constructor, destructor, and member initializers to
windows_thread_info, and changes gdb and gdbserver to use new and
delete.
gdb/ChangeLog
2020-04-08 Tom Tromey <tromey@adacore.com>
* windows-nat.c (windows_add_thread): Use new.
(windows_init_thread_list, windows_delete_thread): Use delete.
(get_windows_debug_event): Update.
* nat/windows-nat.h (struct windows_thread_info): Add constructor,
destructor, and initializers.
gdbserver/ChangeLog
2020-04-08 Tom Tromey <tromey@adacore.com>
* win32-low.c (child_add_thread): Use new.
(delete_thread_info): Use delete.
This introduces a new file, nat/windows-nat.h, which holds the
definition of windows_thread_info. This is now shared between gdb and
gdbserver.
Note that the two implementations different slightly. gdb had a
couple of fields ("name" and "reload_context") that gdbserver did not;
while gdbserver had one field ("base_context") that gdb did not, plus
better comments. The new file preserves all the fields, and the
comments.
gdb/ChangeLog
2020-04-08 Tom Tromey <tromey@adacore.com>
* windows-nat.c (struct windows_thread_info): Remove.
* nat/windows-nat.h: New file.
gdbserver/ChangeLog
2020-04-08 Tom Tromey <tromey@adacore.com>
* win32-low.h (struct windows_thread_info): Remove.
gdbserver/ChangeLog:
2020-04-02 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
Remove the 'get_ipa_tdesc_idx' linux target op and let a concrete
linux target define the op by overriding the declaration in
process_stratum_target.
* linux-low.h (struct linux_target_ops): Remove the op.
(class linux_process_target) <get_ipa_tdesc_idx>: Remove.
* linux-low.cc (linux_process_target::get_ipa_tdesc_idx): Remove.
* linux-x86-low.cc (class x86_target) <get_ipa_tdesc_idx>: Declare.
(x86_get_ipa_tdesc_idx): Turn into...
(x86_target::get_ipa_tdesc_idx): ...this.
(the_low_target): Remove the op field.
* linux-ppc-low.cc (class ppc_target) <get_ipa_tdesc_idx>: Declare.
(ppc_get_ipa_tdesc_idx): Turn into...
(ppc_target::get_ipa_tdesc_idx): ...this.
(the_low_target): Remove the op field.
* linux-s390-low.cc (class s390_target) <get_ipa_tdesc_idx>: Declare.
(s390_get_ipa_tdesc_idx): Turn into...
(s390_target::get_ipa_tdesc_idx): ...this.
(the_low_target): Remove the op field.
All the linux low targets except arm define the
'supports_hardware_single_step' op to return true. Hence, we override
the method to return true in linux_process_target, and remove the
definitions in all the linux low targets but arm.
gdbserver/ChangeLog:
2020-04-02 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
Remove the 'supports_hardware_single_step' linux target op and
override the process_stratum_target's op definition in
linux_process_target to return true.
* linux-low.h (struct linux_target_ops): Remove the op.
(class linux_process_target) <finish_step_over>
<maybe_hw_step>: Declare.
* linux-low.cc (can_hardware_single_step): Remove.
(maybe_hw_step): Turn into...
(linux_process_target::maybe_hw_step): ...this.
(finish_step_over): Turn into...
(linux_process_target::finish_step_over): ...this.
(linux_process_target::supports_hardware_single_step): Update
to return true.
Update the callers below.
(linux_process_target::single_step)
(linux_process_target::resume_one_lwp_throw)
* linux-arm-low.cc (class arm_target)
<supports_hardware_single_step>: Declare.
(arm_supports_hardware_single_step): Turn into...
(arm_target::supports_hardware_single_step): ...this.
(the_low_target): Remove the op field.
* linux-x86-low.cc (x86_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-aarch64-low.cc (aarch64_supports_hardware_single_step):
Remove.
(the_low_target): Remove the op field.
* linux-bfin-low.cc (bfin_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-crisv32-low.cc (cris_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-m32r-low.cc (m32r_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-m68k-low.cc (m68k_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-ppc-low.cc (ppc_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-s390-low.cc (s390_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-sh-low.cc (sh_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-tic6x-low.cc (tic6x_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-tile-low.cc (tile_supports_hardware_single_step): Remove.
(the_low_target): Remove the op field.
* linux-xtensa-low.cc (xtensa_supports_hardware_single_step):
Remove.
(the_low_target): Remove the op field.
gdbserver/ChangeLog:
2020-04-02 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
Turn the 'arch_setup' linux target op into a method of
linux_process_target.
* linux-low.h (struct linux_target_ops) <arch_setup>: Delete.
(class linux_process_target) <arch_setup_thread>
<low_arch_setup>: New declarations.
* linux-low.cc (linux_arch_setup): Delete.
(linux_arch_setup_thread): Turn into...
(linux_process_target::arch_setup_thread): ... this.
Update the callers below.
(linux_process_target::handle_extended_wait)
(linux_process_target::post_create_inferior)
(linux_process_target::filter_event)
* linux-x86-low.cc (class x86_target) <low_arch_setup>: New
declaration.
(x86_linux_update_xmltarget): Turn into...
(x86_target::update_xmltarget): ...this.
(x86_linux_process_qsupported): Update the call to
x86_linux_update_xmltarget.
(x86_arch_setup): Turn into ...
(x86_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-aarch64-low.cc (class aarch64_target) <low_arch_setup>: New
declaration.
(aarch64_arch_setup): Turn into ...
(aarch64_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-arm-low.cc (class arm_target) <low_arch_setup>: New
declaration.
(arm_arch_setup): Turn into ...
(arm_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-bfin-low.cc (class bfin_target) <low_arch_setup>: New
declaration.
(bfin_arch_setup): Turn into ...
(bfin_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-cris-low.cc (class cris_target) <low_arch_setup>: New
declaration.
(cris_arch_setup): Turn into ...
(cris_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-crisv32-low.cc (class crisv32_target) <low_arch_setup>: New
declaration.
(crisv32_arch_setup): Turn into ...
(crisv32_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-ia64-low.cc (class ia64_target) <low_arch_setup>: New
declaration.
(ia64_arch_setup): Turn into ...
(ia64_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-m32r-low.cc (class m32r_target) <low_arch_setup>: New
declaration.
(m32r_arch_setup): Turn into ...
(m32r_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-m68k-low.cc (class m68k_target) <low_arch_setup>: New
declaration.
(m68k_arch_setup): Turn into ...
(m68k_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-mips-low.cc (class mips_target) <low_arch_setup>: New
declaration.
(mips_arch_setup): Turn into ...
(mips_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-nios2-low.cc (class nios2_target) <low_arch_setup>: New
declaration.
(nios2_arch_setup): Turn into ...
(nios2_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-ppc-low.cc (class ppc_target) <low_arch_setup>: New
declaration.
(ppc_arch_setup): Turn into ...
(ppc_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-riscv-low.cc (class riscv_target) <low_arch_setup>: New
declaration.
(riscv_arch_setup): Turn into ...
(riscv_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-s390-low.cc (class s390_target) <low_arch_setup>: New
declaration.
(s390_arch_setup): Turn into ...
(s390_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-sh-low.cc (class sh_target) <low_arch_setup>: New
declaration.
(sh_arch_setup): Turn into ...
(sh_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-sparc-low.cc (class sparc_target) <low_arch_setup>: New
declaration.
(sparc_arch_setup): Turn into ...
(sparc_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-tic6x-low.cc (class tic6x_target) <low_arch_setup>: New
declaration.
(tic6x_arch_setup): Turn into ...
(tic6x_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-tile-low.cc (class tile_target) <low_arch_setup>: New
declaration.
(tile_arch_setup): Turn into ...
(tile_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
* linux-xtensa-low.cc (class xtensa_target) <low_arch_setup>: New
declaration.
(xtensa_arch_setup): Turn into ...
(xtensa_target::low_arch_setup): ...this.
(the_low_target): Remove the op field.
This is the beginning of a series of patches that convert the linux
low targets into classes derived from linux_process_target. At the
end of the series we obtain a class hierarchy that looks like this:
process_stratum_target
^
|
|-- linux_process_target
^
|
|-- x86_target (defined in linux-x86-low)
|-- aarch64_target (defined in linux-aarch64-low)
|-- ppc_target (defined in linux-ppc-low)
|-- ...
In several cases, linux_process_target simply forwards a target op
request to a corresponding linux_target_ops function. For these
cases, the definition in linux_process_target will be removed and the
definition will be left to the deriving linux low target class; using
inheritance provides a nice and natural, object-oriented
simplification in these cases.
The series converts linux_target_ops into protected methods of
linux_process_target one by one. Throughout the series, based on the
needs, static functions defined in linux-low.cc are converted to
private methods of linux_process_target as well. This is done either
as separate patches or as integrated into a patch that convert a
particular linux_target_op into a method.
The series ends with the patch titled "gdbserver/linux-low: delete
'linux_target_ops' and 'the_low_target'".
Built and regression-tested on x86_64-linux. The following linux low
targets have been built (but not tested) via cross-compilation:
aarch64, arm, m68k, mips, ppc, riscv, s390, sh, sparc. The other
targets (bfin, cris, crisv32, ia64, m32r, nios2, tic6x, tile, xtensa)
were neither built nor tested.
gdbserver/ChangeLog:
2020-04-02 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* linux-low.h (the_linux_target): New extern declaration.
* linux-low.cc (initialize_low): Use 'the_linux_target' to set
'the_target'.
(the_linux_target): Remove.
* linux-x86-low.cc (class x86_target): New class.
(the_x86_target): New static object.
(the_linux_target): Define as pointer to the_x86_target.
* linux-aarch64-low.cc (class aarch64_target): New class.
(the_aarch64_target): New static object.
(the_linux_target): Define as pointer to the_aarch64_target.
* linux-arm-low.cc (class arm_target): New class.
(the_arm_target): New static object.
(the_linux_target): Define as pointer to the_arm_target.
* linux-bfin-low.cc (class bfin_target): New class.
(the_bfin_target): New static object.
(the_linux_target): Define as pointer to the_bfin_target.
* linux-cris-low.cc (class cris_target): New class.
(the_cris_target): New static object.
(the_linux_target): Define as pointer to the_cris_target.
* linux-crisv32-low.cc (class crisv32_target): New class.
(the_crisv32_target): New static object.
(the_linux_target): Define as pointer to the_crisv32_target.
* linux-ia64-low.cc (class ia64_target): New class.
(the_ia64_target): New static object.
(the_linux_target): Define as pointer to the_ia64_target.
* linux-m32r-low.cc (class m32r_target): New class.
(the_m32r_target): New static object.
(the_linux_target): Define as pointer to the_m32r_target.
* linux-m68k-low.cc (class m68k_target): New class.
(the_m68k_target): New static object.
(the_linux_target): Define as pointer to the_m68k_target.
* linux-mips-low.cc (class mips_target): New class.
(the_mips_target): New static object.
(the_linux_target): Define as pointer to the_mips_target.
* linux-nios2-low.cc (class nios2_target): New class.
(the_nios2_target): New static object.
(the_linux_target): Define as pointer to the_nios2_target.
* linux-ppc-low.cc (class ppc_target): New class.
(the_ppc_target): New static object.
(the_linux_target): Define as pointer to the_ppc_target.
* linux-riscv-low.cc (class riscv_target): New class.
(the_riscv_target): New static object.
(the_linux_target): Define as pointer to the_riscv_target.
* linux-s390-low.cc (class s390_target): New class.
(the_s390_target): New static object.
(the_linux_target): Define as pointer to the_s390_target.
* linux-sh-low.cc (class sh_target): New class.
(the_sh_target): New static object.
(the_linux_target): Define as pointer to the_sh_target.
* linux-sparc-low.cc (class sparc_target): New class.
(the_sparc_target): New static object.
(the_linux_target): Define as pointer to the_sparc_target.
* linux-tic6x-low.cc (class tic6x_target): New class.
(the_tic6x_target): New static object.
(the_linux_target): Define as pointer to the_tic6x_target.
* linux-tile-low.cc (class tile_target): New class.
(the_tile_target): New static object.
(the_linux_target): Define as pointer to the_tile_target.
* linux-xtensa-low.cc (class xtensa_target): New class.
(the_xtensa_target): New static object.
(the_linux_target): Define as pointer to the_xtensa_target.
The comment for the linux target op 'cannot_store_register' states the
following:
/* Returns 0 if we can store the register, 1 if we can not
store the register, and 2 if failure to store the register
is acceptable. */
There is only one low target, linux-ppc-low, that potentially returns
2. There are two places that call the 'cannot_store_register' target
op in linux-low.cc. None of these locations distinguish a '2' from a
'1'. Hence, to simplify the definition, make the function a predicate
that returns either 0 or 1. This is also consistent with the
companion function, 'cannot_fetch_register'.
gdbserver/ChangeLog:
2020-04-02 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* linux-low.h (struct linux_target_ops): Update the comment for
'cannot_store_register' to return 0 or 1.
* linux-ppc-low.cc (ppc_cannot_store_register): Return 1 instead
of 2.
I stumbled on this snippet in nat/gdb_ptrace.h:
/* Some systems, in particular DEC OSF/1, Digital Unix, Compaq Tru64
or whatever it's called these days, don't provide a prototype for
ptrace. Provide one to silence compiler warnings. */
#ifndef HAVE_DECL_PTRACE
extern PTRACE_TYPE_RET ptrace();
#endif
I believe this is unnecessary today and should be removed. First, the
comment only mentions OSes we don't support (and to be honest, I had
never even heard of).
But most importantly, in C++, a declaration with empty parenthesis
declares a function that accepts no arguments, unlike in C. So if this
declaration was really used, GDB wouldn't build, since all ptrace call
sites pass some arguments. Since we haven't heard anything about this
causing some build failures since we have transitioned to C++, I
conclude that it's not used.
This patch removes it as well as the corresponding configure check.
gdb/ChangeLog:
* ptrace.m4: Don't check for ptrace declaration.
* config.in: Re-generate.
* configure: Re-generate.
* nat/gdb_ptrace.h: Don't declare ptrace if HAVE_DECL_PTRACE is
not defined.
gdbserver/ChangeLog:
* config.in: Re-generate.
* configure: Re-generate.
gdbsupport/ChangeLog:
* config.in: Re-generate.
* configure: Re-generate.
This changes the gdbserver build to use the gdbsupport that was built
for gdb.
gdbserver and gdbreplay now must use WIN32APILIBS (aka -lws2_32).
Before this change, gdbserver did not define USE_WIN32API when
building gdbsupport, but now this is always done.
ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* Makefile.in: Rebuild.
* Makefile.def (gdbserver): Depend on gdbsupport.
gdbserver/ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* configure: Rebuild.
* configure.ac (GDBSERVER_DEPFILES): Remove srv_selftest_objs.
(WIN32APILIBS): New subst.
* Makefile.in (SFILES, OBS, TAGS, GDBREPLAY_OBS): Remove
gdbsupport files.
(gdbsupport/%.o): Remove target.
(GDBSUPPORT_BUILDDIR, GDBSUPPORT): New variables.
(gdbserver$(EXEEXT), gdbreplay$(EXEEXT)): Add GDBSUPPORT.
(WIN32APILIBS): New variable.
(gdbserver$(EXEEXT)): Add WIN32APILIBS.
(gdbreplay$(EXEEXT)): Likewise.
gdbserver uses gdb's alloc.c, and this in turn can include headers
from intl via gdbsupport/gdb_locale.h. This can cause build failures
in some situations, for example if you build gdb and gdbserver on
mingw.
This patch restores the gdbsupport dependency on intl, and changes
gdbserver to use ZW_GNU_GETTEXT_SISTER_DIR. This fixes this build
problem.
ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* Makefile.in: Rebuild.
* Makefile.def (gdbsupport): Depend on intl.
gdbserver/ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* config.in, configure: Rebuild.
* configure.ac: Call ZW_GNU_GETTEXT_SISTER_DIR.
* acinclude.m4: Include gettext-sister.m4.
* Makefile.in (top_builddir, INTL, INTL_DEPS, INTL_CFLAGS): New
variables.
(INCLUDE_CFLAGS): Add INTL_CFLAGS.
(gdbserver$(EXEEXT), gdbreplay$(EXEEXT)): Use INTL_DEPS, INTL.
The selftest.m4 file is used by gdb, gdbserver and gdbsupport, I think
it belongs in gdbsupport.
gdb/ChangeLog:
* selftest.m4: Move to gdbsupport/.
* acinclude.m4: Update path to selftest.m4.
gdbserver/ChangeLog:
* acinclude.m4: Update path to selftest.m4.
gdbsupport/ChangeLog:
* selftest.m4: Moved from gdb/.
* acinclude.m4: Update path to selftest.m4.
The same is done for gdb, gdbserver and gdbsupport. I therefore think
it makes sense to move that to GDB_AC_COMMON.
It is required to move the call to GDB_AC_COMMON so it is before
GDB_AC_SELFTEST in gdbserver/configure.ac, otherwise the $development
variable isn't set when the code behind GDB_AC_SELFTEST executes.
gdb/ChangeLog:
* configure.ac: Don't source bfd/development.sh.
* selftest.m4: Modify comment.
* configure: Re-generate.
gdbserver/ChangeLog:
* configure.ac: Don't source bfd/development.sh, move
GDB_AC_COMMON higher.
* configure: Re-generate.
gdbsupport/ChangeLog:
* configure.ac: Don't source bfd/development.sh.
* common.m4: Source bfd/development.sh.
* configure: Re-generate.
Before commit 3d1e5a43cb ("gdbsupport/configure.ac: source
development.sh"), the GDB build in non-development mode (turn
development to false in bfd/development.sh if you want to try) was
broken because the gdbsupport configure script didn't source
bfd/development.sh to set the development variable.
Since the GDB_AC_SELFTEST macro relies on the `development` variable, I
propose to modify it such that it errors out if $development does not
have an expected value of "true" or "false". This could prevent a
future similar problem from happening while refactoring the configure
scripts. It would have caught the problem fixed by the patch mentioned
earlier.
gdb/ChangeLog:
* selftest.m4 (GDB_AC_SELFTEST): Error out if $development is
not "true" or "false".
* configure: Re-generate.
gdbserver/ChangeLog:
* configure: Re-generate.
gdbsupport/ChangeLog:
* configure: Re-generate.
While compiling with clang, I noticed it didn't catch cases where my
function declaration didn't match my function definition. This is
normally caught by gcc with -Wmissing-declarations.
On clang, this is caught by -Wmissing-prototypes instead.
Note that on gcc, -Wmissing-prototypes also exists, but is only valid
for C and Objective-C. It gets correctly rejected by the configure
script since gcc rejects it with:
cc1plus: error: command line option '-Wmissing-prototypes' is valid for C/ObjC but not for C++ -Werror
So this warning flag ends up not used for gcc (which is what we want).
gdb/ChangeLog:
* configure: Re-generate.
gdbserver/ChangeLog:
* configure: Re-generate.
gdbsupport/ChangeLog:
* configure: Re-generate.
* warning.m4: Enable -Wmissing-prototypes.
Copy the .dir-locls.el file from gdb/ to gdbserver/ and gdbsupport/ so
that we get the GNU/GDB style when editing these files in Emacs.
I initially wanted to remove the (c-mode . ((mode . c++))) that
switches c-mode files into c++-mode as we store C++ code in *.cc files
in the gdbserver/ directory, unlike gdb/ where we use *.c, however, I
was forgetting about the header files - we still use *.h for our C++
header files, so for now I left the settings in place to open all C
files in c++-mode.
We now have three copies of this file, which are all identical. It
would be nice if we could remove this duplication, however, for now we
haven't found a good way to do this.
Some options considered were:
1. Use symlinks to only have one copy of the file. This was
rejected as not all targets support symlinks in the way.
2. Have two of the .dir-locals.el files contain some mechanism by
which the third copy of the file is sourced. Though this would, in
theory, be possible, it would involve some advanced Emacs scripting,
would be fragile, and a maintenance burdon.
3. Move the .dir-locals up into top level src/ directory, then use
Emacs dir-locals directory pattern matching to only apply the rules
for the three directories we care about. The problem is that each
directory has to be listed separately, so we still end up having to
duplicate all the rules.
In the end, it was decided that having three copies of the file,
though not ideal, is probably easiest for now. This was all discussed
in this mailing list thread:
https://sourceware.org/ml/gdb-patches/2020-03/msg00024.html
The copyright date in the new files is left as for gdb/.dir-locals.el,
as the new files are a copy of the old, this is inline with this rule:
https://sourceware.org/gdb/wiki/ContributionChecklist#Copyright_Header
gdb/ChangeLog:
* .dir-locals.el: Add a comment referencing the other copies of
this file.
gdbserver/ChangeLog:
* .dir-locals.el: New file.
gdbsupport/ChangeLog:
* .dir-locals.el: New file.
Create .gitattributes files in gdb/, gdbserver/, and gdbsupport/.
The files specify cpp-style diffs for .h and .c files. This is
particularly helpful if a class in a header file is modified.
For instance, if the `stop_requested` field of `thread_info` in
gdb/gdbthread.h is modified, we get the following diff with
'git diff' (using git version 2.17.1):
@@ -379,7 +379,7 @@ public:
struct target_waitstatus pending_follow;
/* True if this thread has been explicitly requested to stop. */
- int stop_requested = 0;
+ bool stop_requested = 0;
/* The initiating frame of a nexting operation, used for deciding
which exceptions to intercept. If it is null_frame_id no
Note that the context of the change shows up as 'public:'; not so
useful. With the .gitattributes file, we get:
@@ -379,7 +379,7 @@ class thread_info : public refcounted_object
struct target_waitstatus pending_follow;
/* True if this thread has been explicitly requested to stop. */
- int stop_requested = 0;
+ bool stop_requested = 0;
/* The initiating frame of a nexting operation, used for deciding
which exceptions to intercept. If it is null_frame_id no
The context is successfully shown as 'class thread_info'.
This patch creates a .gitattributes file per each of gdb, gdbserver,
and gdbsupport folders. An alternative would be to define the
attributes in the root folder -- this would impact all the top-level
folders, though. I opted for the more conservative approach.
gdb/ChangeLog:
2020-03-05 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* .gitattributes: New file.
gdbserver/ChangeLog:
2020-03-05 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* .gitattributes: New file.
gdbsupport/ChangeLog:
2020-03-05 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* .gitattributes: New file.
There is a developer only feature in gdbserver that provides a
command line option --disable-packet that prevents some packets from
being sent, which is used to increase test coverage within GDB.
This commit extends this mechanism to prevent GDBserver from sending
the T stop reply packets, instead limiting GDBserver to only send the
S stop reply packets.
The S stop reply packet is part of the older target control mechanism,
which has design flaws that were worked around with the introduction
of the newer target control mechanism, which uses the T stop reply
packet.
Limiting GDBserver to use S stop packets instead of T stop packets
will, inevitably, mean that GDBserver doesn't function correctly in
many cases involving multiple threads, however, I don't think this is
too important, this is a developer only feature, intended to allow us
to test GDB.
A new test that makes use of this feature will be added in the next
commit.
gdbserver/ChangeLog:
* remote-utils.cc (prepare_resume_reply): Add ability to convert T
reply into an S reply.
* server.cc (disable_packet_T): New global.
(captured_main): Set new global when appropriate.
* server.h (disable_packet_T): Declare.
I noticed gdbserver's Makefile doesn't have a mostlyclean target. I
use this sometimes, so this patch adds it. Adding it as a synonym of
"clean" seemed to make sense, given the contents of that rule.
gdbserver/ChangeLog
2020-02-21 Tom Tromey <tom@tromey.com>
* Makefile.in (mostlyclean): New target.
Tom Tromey