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As the new to_xfer_partial implementations are done in ctf and tfile
targets, read_value_memory can be simplified a lot. Call
target_xfer_partial in a loop, check return value, and set bytes
unavailable when necessary.
gdb:
2014-02-23 Yao Qi <yao@codesourcery.com>
* valops.c (read_value_memory): Rewrite it. Call
target_xfer_partial in a loop.
* exec.h (section_table_available_memory): Remove declaration.
Move comments to ...
* exec.c (section_table_available_memory): ... here. Make it static.
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This patch adjust both ctf and tfile target implementation of to_xfer_partial,
to return TARGET_XFER_E_UNAVAILABLE and set *XFERED_LEN if data is
unavailable. Note that some code on xfer in exec.c can be shared, but
we can do it in a separate pass later.
gdb:
2014-02-23 Yao Qi <yao@codesourcery.com>
* exec.c (section_table_read_available_memory): New function.
* exec.h (section_table_read_available_memory): Declare.
* ctf.c (ctf_xfer_partial): Call
section_table_read_available_memory.
* tracefile-tfile.c (tfile_xfer_partial): Likewise.
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In the to_xfer_partial implementations of ctf and tfile, the code on
reading from read-only sections is duplicated. This patch moves it to
a separate function exec_read_partial_read_only.
gdb:
2014-02-23 Yao Qi <yao@codesourcery.com>
* ctf.c (ctf_xfer_partial): Move code to ...
* exec.c (exec_read_partial_read_only): ... it. New function.
* tracefile-tfile.c (tfile_xfer_partial): Likewise.
* tracefile.c: Include "exec.h".
* exec.h (exec_read_partial_read_only): Declare.
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At present, tfile target thinks it has memory but ctf doesn't.
This is an oversight when I added ctf target support. This patch
moves the implementations of to_has_all_memory and to_has_memory to
upper layer. After this change, both tfile and ctf target think
they have memory.
gdb:
2014-02-23 Yao Qi <yao@codesourcery.com>
* tracefile-tfile.c (tfile_has_all_memory): Remove.
(tfile_has_memory): Remove.
(init_tfile_ops): Don't set fields to_has_all_memory and
to_has_memory of tfile_ops.
* tracefile.c (tracefile_has_all_memory): New function.
(tracefile_has_memory): New function.
(init_tracefile_ops): Initialize fields to_has_all_memory and
to_has_memory of 'ops'.
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This patch move the duplicated code between tfile and ctf
targets into file tracefile.c. The common part of target_ops
fields are set in init_tracefile_ops.
gdb:
2014-02-23 Yao Qi <yao@codesourcery.com>
* ctf.c (ctf_has_stack, ctf_has_registers): Remove.
(ctf_thread_alive, ctf_get_trace_status): Remove.
(init_ctf_ops): Don't set some fields of ctf_ops. Call
init_tracefile_ops.
* tracefile-tfile.c (tfile_get_trace_status): Remove.
(tfile_has_stack, tfile_has_registers): Remove.
(tfile_thread_alive): Remove.
(init_tfile_ops): Don't set some fields of tfile_ops. Call
init_tracefile_ops.
* tracefile.c (tracefile_has_stack): New function.
(tracefile_has_registers): New function.
(tracefile_thread_alive): New function.
(tracefile_get_trace_status): New function.
(init_tracefile_ops): New function.
* tracefile.h (init_tracefile_ops): Declare.
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This patch moves tfile target related code from tracepoint.c to
tracefile-tfile.c.
gdb:
2014-02-23 Yao Qi <yao@codesourcery.com>
* tracepoint.c (TFILE_PID): Move it to tracefile-tfile.c.
(O_LARGEFILE): Likewise.
(tfile_ops): Likewise.
(TRACE_HEADER_SIZE): Likewise.
(trace_fd, trace_frames_offset, cur_offset): Likewise.
(cur_data_size): Likewise.
(tfile_read, tfile_open, tfile_interp_line): Likewise.
(tfile_close, tfile_files_info): Likewise.
(tfile_get_trace_status): Likewise.
(tfile_get_tracepoint_status): Likewise.
(tfile_get_traceframe_address): Likewise.
(tfile_trace_find, match_blocktype): Likewise.
(traceframe_walk_blocks, traceframe_find_block_type): Likewise.
(tfile_fetch_registers, tfile_xfer_partial): Likewise.
(tfile_get_trace_state_variable_value): Likewise.
(tfile_has_all_memory, tfile_has_memory): Likewise.
(tfile_has_stack, tfile_has_registers): Likewise.
(tfile_thread_alive, build_traceframe_info): Likewise.
(tfile_traceframe_info, init_tfile_ops): Likewise.
(_initialize_tracepoint): Don't call init_tfile_ops
and add_target_with_completer.
* tracefile-tfile.c: Include regcache.h, inferior.h, gdbthread.h,
exec.h, completer.h and filenames.h.
(_initialize_tracefile_tfile): New function.
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This patch is a refactor which moves trace file writer related code
out of tracepoint.c, which has 6k LOC. It moves general trace file
writer to a new file tracefile.c and moves tfile specific writer to
tracefile-tfile.c.
gdb:
2014-02-23 Yao Qi <yao@codesourcery.com>
* Makefile.in (REMOTE_OBS): Append tracefile.o and
tracefile-tfile.o.
(HFILES_NO_SRCDIR): Add tracefile.h.
* ctf.c: Include "tracefile.h".
* tracefile.h: New file.
* tracefile.c: New file
* tracefile-tfile.c: New file.
* tracepoint.c: Include "tracefile.h".
(free_uploaded_tps, free_uploaded_tsvs): Remove declarations.
(stop_reason_names): Add const.
(trace_file_writer_xfree): Move it to tracefile.c.
(trace_save, trace_save_command, trace_save_tfile): Likewise.
(trace_save_ctf): Likewise.
(struct tfile_trace_file_writer): Move it to tracefile-tfile.c.
(tfile_target_save, tfile_dtor, tfile_start): Likewise.
(tfile_write_header, tfile_write_regblock_type): Likewise.
(tfile_write_status, tfile_write_uploaded_tsv): Likewise.
(tfile_write_uploaded_tp, tfile_write_definition_end): Likewise.
(tfile_write_raw_data, tfile_end): Likewise.
(tfile_trace_file_writer_new): Likewise.
(free_uploaded_tp): Make it extern.
(free_uploaded_tsv): Make it extern.
(_initialize_tracepoint): Move code to register command 'tsave'
to tracefile.c.
* tracepoint.h (stop_reason_names): Declare.
(struct trace_frame_write_ops): Move it to tracefile.h.
(struct trace_file_write_ops): Likewise.
(struct trace_file_writer): Likewise.
(free_uploaded_tsvs, free_uploaded_tps): Declare.
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info os processes -fsanitize=address error
https://sourceware.org/bugzilla/show_bug.cgi?id=16594
info os processes
=================================================================
==5795== ERROR: AddressSanitizer: heap-use-after-free on address
0x600600214974 at pc 0x757a92 bp 0x7fff95dd9f00 sp 0x7fff95dd9ef0
READ of size 4 at 0x600600214974 thread T0
#0 0x757a91 in get_cores_used_by_process (.../gdb/gdb+0x757a91)
At least Fedora 20 has process(es):
6678 ? Ss 0:00 /usr/lib/systemd/systemd --user
6680 ? S 0:00 \_ (sd-pam)
and GDB "info os processes" crashes on it as /proc/6680/stat contains:
6680 ((sd-pam)) S 6678 6678 6678 0 -1 1077961024 33 0 0 0 0 0 0 0 20 0 1 0 18568 73768960 120 18446744073709551615 1 1
0 0 0 0 0 4096 0 18446744073709551615 0 0 17 6 0 0 0 0 0 0 0 0 0 0 0 0 0
and GDB fails to find the proper end of the process name "((sd-pam))".
Therefore it reads core number off-by-one (it reads 17 instead of 6) and
overruns the array.
(1) Make the process name parsing more foolproof.
(2) Do not trust the parsed number from /proc/PID/stat and verify it against
the array size.
I noticed that 'ps' gets this right, so I've peeked at its
sources, and it just looks for the first ')' starting at
the end.
https://gitorious.org/procps/procps/source/dc072aced7250fed9b01fb05f0d672678752a63e:proc/readproc.c
Look for stat2proc.
Given ps does that, I believe the kernel won't ever be changed
in a way that would break it. So it sounds like could do strrchr
from the end of stat just as well without worry, which is simpler.
gdb/
2014-02-21 Jan Kratochvil <jan.kratochvil@redhat.com>
PR gdb/16594
* common/linux-osdata.c (linux_common_core_of_thread): Find the end of
process name.
(get_cores_used_by_process): New parameter num_cores, use it.
(linux_xfer_osdata_processes): Pass num_cores to it.
* linux-tdep.c (linux_info_proc, linux_fill_prpsinfo): Find the end of
process name.
Message-ID: <20140217212826.GA15080@host2.jankratochvil.net>
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The patch "return target_xfer_status in to_xfer_partial" caused a
regression in various s390(x) test cases, because memory_xfer_partial
filled only the first byte of the read buffer from a breakpoint shadow:
https://sourceware.org/ml/gdb-patches/2014-01/msg01071.html
This patch fixes the regression.
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I realized that the name of this test only made sense when considering
the old (never committed) implementation of the fix that came along
with the test originally, that forced a schedlock while a step-resume
(to get over the signal handler) was inserted. The final solution
that went into the tree does not force that locking.
So this renames it to something more descriptive.
gdb/testsuite/
2014-02-21 Pedro Alves <palves@redhat.com>
* gdb.threads/step-after-sr-lock.c: Rename to ...
* gdb.threads/signal-while-stepping-over-bp-other-thread.c: ... this.
* gdb.threads/step-after-sr-lock.exp: Rename to ...
* gdb.threads/signal-while-stepping-over-bp-other-thread.exp:
... this.
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"triplet operands"
This is the continuation of what Joel proposed on:
<https://sourceware.org/ml/gdb-patches/2013-12/msg00977.html>
Now that I have already submitted and pushed the patch to split
i386_stap_parse_special_token into two smaller functions, it is indeed
simpler to understand this patch.
It occurs because, on x86, triplet displacement operands are allowed
(like "-4+8-20(%rbp)"), and the current parser for this expression is
buggy. It does not correctly extract the register name from the
expression, which leads to incorrect evaluation. The parser was also
being very "generous" with the expression, so I included a few more
checks to ensure that we're indeed dealing with a triplet displacement
operand.
This patch also includes testcases for the two different kind of
expressions that can be encountered on x86: the triplet displacement
(explained above) and the three-argument displacement (as in
"(%rbx,%ebx,-8)"). The tests are obviously arch-dependent and are
placed under gdb.arch/.
Message-ID: <m3mwj1j12v.fsf@redhat.com>
URL: <https://sourceware.org/ml/gdb-patches/2014-01/msg00310.html>
gdb/
2014-02-20 Sergio Durigan Junior <sergiodj@redhat.com>
PR tdep/16397
* i386-tdep.c (i386_stap_parse_special_token_triplet): Check if a
number comes after the + or - signs. Adjust length of register
name to be extracted.
gdb/testsuite/
2014-02-20 Sergio Durigan Junior <sergiodj@redhat.com>
PR tdep/16397
* gdb.arch/amd64-stap-special-operands.exp: New file.
* gdb.arch/amd64-stap-three-arg-disp.S: Likewise.
* gdb.arch/amd64-stap-three-arg-disp.c: Likewise.
* gdb.arch/amd64-stap-triplet.S: Likewise.
* gdb.arch/amd64-stap-triplet.c: Likewise.
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The AIX linker pointed out that gdb had multiple definitions of the
various *_varobj_ops objects. This patch fixes the problem by marking
the declarations as "extern" in varobj.h. Tested by rebuilding on
x86-64 Fedora 18 and on AIX.
2014-02-20 Tom Tromey <tromey@redhat.com>
* varobj.h (c_varobj_ops, cplus_varobj_ops, java_varobj_ops)
(ada_varobj_ops): Mark "extern".
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* inferiors.h (ptid_of): Move here from linux-low.h.
(pid_of, lwpid_of): Ditto.
* linux-aarch64-low.c (debug_reg_change_callback): Update, "entry"
parameter is a struct thread_info * now.
(aarch64_notify_debug_reg_change): Fetch pid from current_inferior
directly. Pass &all_threads to find_inferior instead of &all_lwps.
(aarch64_stopped_data_address): Fetch lwpid from current_inferior
directly.
(aarch64_linux_prepare_to_resume): Fetch ptid from thread.
(aarch64_arch_setup): Fetch lwpid from current_inferior directly.
* linux-arm-low.c (update_registers_callback): Update, "entry"
parameter is a struct thread_info * now.
Fetch lwpid from current_inferior directly.
(arm_insert_point): Pass &all_threads to find_inferior instead of
&all_lwps.
(arm_remove_point): Ditto.
(arm_stopped_by_watchpoint): Fetch lwp from current_inferior.
(arm_prepare_to_resume): Fetch pid from thread.
(arm_read_description): Fetch lwpid from current_inferior directly.
* linux-low.c (all_lwps): Delete.
(delete_lwp): Delete call to remove_inferior.
(handle_extended_wait): Fetch lwpid from thread.
(add_lwp): Don't set lwp->entry.id. Remove call to
add_inferior_to_list.
(linux_attach_lwp_1): Fetch pid from current_inferior directly.
(linux_kill_one_lwp): Fetch ptid,lwpid from thread.
(kill_one_lwp_callback): Ditto.
(linux_kill): Don't dereference NULL pointer.
Fetch ptid,lwpid from thread.
(get_detach_signal): Fetch ptid from thread.
(linux_detach_one_lwp): Fetch ptid,lwpid from thread.
Simplify call to regcache_invalidate_thread.
(delete_lwp_callback): Update, "entry" parameter is a
struct thread_info * now. Fetch pid from thread.
(linux_mourn): Pass &all_threads to find_inferior instead of &all_lwps.
(status_pending_p_callback): Update, "entry" parameter is a
struct thread_info * now. Fetch ptid from thread.
(find_lwp_pid): Update, "entry" parameter is a
struct thread_info * now.
(linux_wait_for_lwp): Fetch pid from thread.
(linux_fast_tracepoint_collecting): Fetch lwpid from thread.
(maybe_move_out_of_jump_pad): Fetch lwpid from current_inferior.
(enqueue_one_deferred_signal): Fetch lwpid from thread.
(dequeue_one_deferred_signal): Ditto.
(cancel_breakpoint): Fetch ptid from current_inferior.
(linux_wait_for_event): Pass &all_threads to find_inferior,
not &all_lwps. Fetch ptid, lwpid from thread.
(count_events_callback): Update, "entry" parameter is a
struct thread_info * now.
(select_singlestep_lwp_callback): Ditto.
(select_event_lwp_callback): Ditto.
(cancel_breakpoints_callback): Ditto.
(linux_cancel_breakpoints): Pass &all_threads to find_inferior,
not &all_lwps.
(select_event_lwp): Ditto. Fetch ptid from event_thread.
(unsuspend_one_lwp): Update, "entry" parameter is a
struct thread_info * now.
(unsuspend_all_lwps): Pass &all_threads to find_inferior,
not &all_lwps.
(linux_stabilize_threads): Ditto. And for for_each_inferior.
Fetch lwpid from thread, not lwp.
(linux_wait_1): Fetch ptid, lwpid from current_inferior.
Pass &all_threads to find_inferior, not &all_lwps.
(send_sigstop): Fetch lwpid from thread, not lwp.
(send_sigstop_callback): Update, "entry" parameter is a
struct thread_info * now.
(suspend_and_send_sigstop_callback): Ditto.
(wait_for_sigstop): Ditto. Fetch ptid, lwpid from thread, lwp.
(stuck_in_jump_pad_callback): Update, "entry" parameter is a
struct thread_info * now.
(move_out_of_jump_pad_callback): Ditto. Fetch ptid, lwpid
from thread, lwp.
(lwp_running): Update, "entry" parameter is a
struct thread_info * now.
(stop_all_lwps): Fetch ptid from thread.
Pass &all_threads to find_inferior, for_each_inferior, not &all_lwps.
(linux_resume_one_lwp): Fetch lwpid from thread.
(linux_set_resume_request): Update, "entry" parameter is a
struct thread_info * now. Fetch pid, lwpid from thread.
(resume_status_pending_p): Update, "entry" parameter is a
struct thread_info * now.
(need_step_over_p): Ditto. Fetch lwpid from thread.
(start_step_over): Fetch lwpid from thread.
(linux_resume_one_thread): Update, "entry" parameter is a
struct thread_info * now. Fetch lwpid from thread.
(linux_resume): Pass &all_threads to find_inferior, not &all_lwps.
(proceed_one_lwp): Update, "entry" parameter is a
struct thread_info * now. Fetch lwpid from thread.
(unsuspend_and_proceed_one_lwp): Update, "entry" parameter is a
struct thread_info * now.
(proceed_all_lwps): Pass &all_threads to find_inferior, not &all_lwps.
(unstop_all_lwps): Ditto. Fetch lwpid from thread.
(regsets_fetch_inferior_registers): Fetch lwpid from current_inferior
directly.
(regsets_store_inferior_registers): Ditto.
(fetch_register, store_register): Ditto.
(linux_read_memory, linux_write_memory): Ditto.
(linux_request_interrupt): Ditto.
(linux_read_auxv): Ditto.
(linux_xfer_siginfo): Ditto.
(linux_qxfer_spu): Ditto.
(linux_qxfer_libraries_svr4): Ditto.
* linux-low.h (ptid_of, pid_of, lwpid_of): Delete,
moved to inferiors.h.
(get_lwp): Delete.
(get_thread_lwp): Update.
(struct lwp_info): Delete member "entry". Simplify comment for
member "thread".
(all_lwps): Delete.
* linux-mips-low.c (mips_read_description): Fetch lwpid from
current_inferior directly.
(update_watch_registers_callback): Update, "entry" parameter is a
struct thread_info * now. Fetch pid from thread.
(mips_linux_prepare_to_resume): Fetch ptid from thread.
(mips_insert_point): Fetch lwpid from current_inferior.
Pass &all_threads to find_inferior, not &all_lwps.
(mips_remove_point): Pass &all_threads to find_inferior, not &all_lwps.
(mips_stopped_by_watchpoint): Fetch lwpid from current_inferior
directly.
(mips_stopped_data_address): Ditto.
* linux-s390-low.c (s390_arch_setup): Fetch pid from current_inferior
directly.
* linux-tile-low.c (tile_arch_setup): Ditto.
* linux-x86-low.c (x86_get_thread_area): Fetch lwpid from thread.
(update_debug_registers_callback): Update, "entry" parameter is a
struct thread_info * now. Fetch pid from thread.
(i386_dr_low_set_addr): Fetch pid from current_inferior directly.
Pass &all_threads to find_inferior, not &all_lwps.
(i386_dr_low_get_addr): Fetch ptid from current_inferior directly.
(i386_dr_low_set_control): Fetch pid from current_inferior directly.
Pass &all_threads to find_inferior, not &all_lwps.
(i386_dr_low_get_control): Fetch ptid from current_inferior directly.
(i386_dr_low_get_status): Ditto.
(x86_linux_prepare_to_resume): Fetch ptid from thread.
(x86_siginfo_fixup): Fetch lwpid from current_inferior directly.
(x86_linux_read_description): Ditto.
* proc-service.c (ps_getpid): Fetch pid from current_inferior directly.
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I happened to notice that last_o_file_start is write-only in
read_dbx_symtab. This patch removes it. Tested by rebuilding.
2014-02-20 Tom Tromey <tromey@redhat.com>
* dbxread.c (read_dbx_symtab): Remove last_o_file_start.
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The arm-elf assembler chokes on the extra parameters in the .section
pseudo-op, so this patch removes them.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/dw2-icycle.S: Remove second and third parameters
in .section pseudo-op.
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to gdbscm_init_eqable_gsmob.
* guile/scm-gsmob.c (gdbscm_init_eqable_gsmob): New arg containing_scm.
All callers updated.
(gdbscm_fill_eqable_gsmob_ptr_slot): Delete arg containing_scm.
All callers updated.
* guile/guile-internal.h (gdbscm_init_eqable_gsmob): Update.
(gdbscm_fill_eqable_gsmob_ptr_slot): Update.
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* dwarf2read.c (struct die_info): New member in_process.
(reset_die_in_process): New function.
(process_die): Set it at the start, reset when returning.
(inherit_abstract_dies): Only call process_die if origin_child_die
not already being processed.
testsuite/
* gdb.dwarf2/dw2-icycle.S: New file.
* gdb.dwarf2/dw2-icycle.c: New file.
* gdb.dwarf2/dw2-icycle.exp: New file.
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This patch brings back a comment that got stripped down a bit too much
during a recent change.
gdb/ChangeLog:
* windows-nat.c (handle_unload_dll): Add function documentation.
(do_initial_windows_stuff): Add comment explaining why we wait
until after inferior initialization has finished before
processing all DLLs.
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Now that get_module_name is no longer called for handling DLL events,
we can simplify it a bit, knowing that the only use is to get the
executable's filename.
While doing so, we adjusted the implementation a bit to avoid
references to DLLs, renamed it to make its more-targeted usage
more explicit, moved it right before the only function that uses it.
We also remove the use of hard-coded length for the buffers being
used.
gdb/ChangeLog:
* windows-nat.c (get_module_name): Delete.
(windows_get_exec_module_filename): New function, mostly
inspired from get_module_name.
(windows_pid_to_exec_file): Replace call to get_module_name
by call to windows_get_exec_module_filename.
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When a DLL gets loaded an the debugger gets a debug event about it,
the currently implementation in handle_load_dll currently tries to
fetch the DLL's name by first iterating over all DLLs known to
the system. It should be sufficient to rely on the name provided
with the event, however, especially in the situation we are now,
where we now know that we're past the statup phase for our inferior.
This patch therefore simplifies windows-nat.c::handle_load_dll to
only rely on the event's lpImageName.
It also updates the function's comment to document the assumption
regarding not being during the inferior's startup phase. And while
at it, it fixes the function documentation, which was probably
unintentionally inherited from another function (perhaps windows_wait).
gdb/ChangeLog:
* windows-nat.c (handle_load_dll): Rewrite this function's
introductory comment. Remove code using get_module_name
to get the DLL's name.
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This patch aims at simplifying DLL handling during the inferior
initialization (process creation during the "run", or during an
"attach"). Instead of processing each DLL load event, which is
sometimes incomplete, we ignore these events until the inferior
has completed its startup phase, and then just iterate over all
DLLs via EnumProcessModules.
gdb/ChangeLog:
* windows-nat.c (get_windows_debug_event): Ignore
LOAD_DLL_DEBUG_EVENT and UNLOAD_DLL_DEBUG_EVENT
if windows_initialization_done == 0.
(windows_add_all_dlls): Renames windows_ensure_ntdll_loaded.
Adjust implementation to always load all DLLs.
(do_initial_windows_stuff): Replace call to
windows_ensure_ntdll_loaded by call to windows_add_all_dlls.
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The "dll-symbols" command, specific to native Windows platforms,
gives the impression that the symbols were not loaded, first
because it completes silently, and second because the "info shared"
output does not get updated after the command completes:
(gdb) dll-symbols C:\WINDOWS\syswow64\rpcrt4.dll
(gdb) info shared
From To Syms Read Shared Object Library
[...]
0x77e51000 0x77ee2554 No C:\WINDOWS\system32\rpcrt4.dll
(we exected the "Syms Read" column to read "Yes").
As far as I can tell, the symbols actually do get loaded, but completely
independently from the solib framework, which explains the silent
loading and the fact that the "Syms Read" column does not get updated.
See windows-nat.c::safe_symbol_file_add_stub, which calls symbol_file_add
instead of calling solib_add.
But, aside from the fact that the "Syms Read" status does not get
updated, I also noticed that it does not take into account the DLL's
actual load address when loading its symbols. As a result, I believe
that we get it wrong if the DLL does not get loaded at the prefered
address.
Rather than trying to fix this command, there does not seem to be
a reason other than historical for having Windows-specific commands
which essentially re-implements the "sharedlibrary" command. The
command interface is slightly different (the latter takes a regexp
rather than a plain filename), but it should be just as easy to use
the "sharedlibrary" command, or its "share" alias, as usisng the
"dll-symbols" command. For instance:
(gdb) share rpcrt4.dll
Reading symbols from C:\WINDOWS\system32\rpcrt4.dll...(no debugging symbols found)...done.
Loaded symbols for C:\WINDOWS\system32\rpcrt4.dll
(gdb) info shared
From To Syms Read Shared Object Library
[...]
0x77e51000 0x77ee2554 Yes (*) C:\WINDOWS\system32\rpcrt4.dll
This patch therefore deprecates the "dll-symbols" command, as well
as its two aliases "add-shared-symbol-files" and "assf", with a view
of deleting them as soon as the 7.8 branch gets cut.
gdb/ChangeLog:
* windows-nat.c (_initialize_windows_nat): Deprecate the
"dll-symbols" command. Turn the "add-shared-symbol-files"
and "assf" aliases into commands, and deprecate them as well.
* NEWS: Add entry explaining that "dll-symbols" and its two
aliases are now deprecated.
gdb/doc/ChangeLog:
* gdb.texinfo (Files): Document "add-shared-symbol-files"
and "assf" as being deprecated.
(Cygwin Native): Likewise for "dll-symbols".
(Non-debug DLL Symbols): Remove reference to "dll-symbols"
as a way to force the loading of symbols from a DLL.
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This patch fixes the following ARI warning:
gdb/dec-thread.c:695: regression: multi-line string: Multi-line string
must have the newline escaped
I think the new-line was unintentional, so I simply removed it,
and then reformatted the string to fit within our 70-80 max characters-
per-line rule.
gdb/ChangeLog:
* dec-thread.c (dec_thread_get_ada_task_ptid): Avoid unescaped
new-line in debug string. Remove trailing spaces.
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* gdbthread.h (add_thread): Change result type to struct thread_info *.
* inferiors.c (add_thread): Change result type to struct thread_info *.
All callers updated.
(add_lwp): Call add_thread here instead of in callers.
All callers updated.
* linux-low.h (get_lwp_thread): Rewrite.
(struct lwp_info): New member "thread".
This speeds up gdbserver attach in non-stop mode because now get_lwp_thread
doesn't do a linear search for the corresponding thread_info object.
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All callers updated.
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* NEWS: Add entry for the new feature
* python/py-value.c (valpy_binop): Call value_x_binop for struct
and class values.
testsuite/
* gdb.python/py-value-cc.cc: Improve test case to enable testing
operations on gdb.Value objects.
* gdb.python/py-value-cc.exp: Add new test to test operations on
gdb.Value objects.
doc/
* python.texi (Values From Inferior): Add description about the
new feature.
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* dll.c (clear_dlls): Replace accessing list implemention details
with API function.
* gdbthread.h (get_first_thread): Declare.
* inferiors.c (for_each_inferior_with_data): New function.
(get_first_thread): New function.
(find_thread_ptid): Simplify.
(get_first_inferior): New function.
(clear_list): Delete.
(one_inferior_p): New function.
(clear_inferior_list): New function.
(clear_inferiors): Update.
* inferiors.h (for_each_inferior_with_data): Declare.
(clear_inferior_list): Declare.
(one_inferior_p): Declare.
(get_first_inferior): Declare.
* linux-low.c (linux_wait_for_event): Replace accessing list
implemention details with API function.
* server.c (target_running): Ditto.
(accumulate_file_name_length): New function.
(emit_dll_description): New function.
(handle_qxfer_libraries): Replace accessing list implemention
details with API function.
(handle_qxfer_threads_worker): New function.
(handle_qxfer_threads_proper): Replace accessing list implemention
details with API function.
(handle_query): Ditto.
(visit_actioned_threads_callback_ftype): New typedef.
(visit_actioned_threads_data): New struct.
(visit_actioned_threads): Rewrite to be find_inferior callback.
(resume): Call find_inferior.
(handle_status): Replace accessing list implemention
details with API function.
(process_serial_event): Replace accessing list implemention details
with API function.
* target.c (set_desired_inferior): Replace accessing list implemention
details with API function.
* tracepoint.c (same_process_p): New function.
(gdb_agent_about_to_close): Replace accessing list implemention
details with API function.
* win32-low.c (child_delete_thread): Replace accessing list
implemention details with API function.
(match_dll_by_basename): New function.
(dll_is_loaded_by_basename): New function.
(win32_ensure_ntdll_loaded): Replace accessing list implemention
details call to dll_is_loaded_by_basename.
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* dll.h (struct dll_info): Add comment.
* gdbthread.h (struct thread_info): Add comment.
(current_ptid): Simplify.
* inferiors.c (add_process): Update.
(remove_process): Update.
* inferiors.h (struct process_info): Rename member "head" to "entry".
* linux-low.c (delete_lwp): Update.
(add_lwp): Update.
(last_thread_of_process_p): Update.
(kill_one_lwp_callback, linux_kill): Update.
(status_pending_p_callback): Update.
(wait_for_sigstop): Update. Simplify read of ptid.
(start_step_over): Update.
* linux-low.h (ptid_of, pid_of, lwpid_of): Update.
(get_lwp_thread): Update.
(struct lwp_info): Rename member "head" to "entry".
* regcache.h (inferior_list_entry): Delete.
* server.c (kill_inferior_callback): Update.
(detach_or_kill_inferior_callback): Update.
(print_started_pid): Update.
(print_attached_pid): Update.
(process_serial_event): Simplify read of ptid.
* thread-db.c (thread_db_create_event): Update.
(thread_db_get_tls_address): Update.
* win32-low.c (current_inferior_ptid): Simplify.
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It's best that we standardize on process_stratum targets using the
ptid.lwp field to store thread ids. The idea being leave the ptid.tid
field free for any thread_stratum target that might want to sit on
top. This patch adds a comment in that direction to struct ptid's
definition.
gdb/
2014-02-19 Pedro Alves <palves@redhat.com>
* common/ptid.h (struct ptid): Mention that process_stratum
targets should prefer ptid.lwp.
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ptid.tid.
From GDB's perspective, independently of how the target really
implements threads, gdb/remote sees all threads as if kernel/system
threads. A rationale along theses lines led to gdbserver storing
thread ids in ptid.lwp in all ports.
Because remote.c is currently using ptid.tid, we can't make gdbserver
and gdb share bits of remote-specific code that manipulates ptids
(e.g., write_ptid/read_ptid).
This patch thus makes remote.c use ptid.lwp instead of ptid.tid.
I believe that on the GDB side too, it's best that we standardize on
process_stratum targets using the ptid.lwp field to store thread ids
anyway. The idea being leave the ptid.tid field free for any
thread_stratum target that might want to sit on top.
Tested on x86_64 Fedora 17, w/ local gdbserver.
gdb/
2014-02-19 Pedro Alves <palves@redhat.com>
* remote.c (remote_thread_alive, write_ptid, read_ptid)
(read_ptid, remote_newthread_step, remote_threads_extra_info)
(remote_get_ada_task_ptid, append_resumption, remote_stop_ns)
(threadalive_test, remote_pid_to_str): Use the ptid.lwp field to
store remote thread ids rather than ptid.tid.
(_initialize_remote): Adjust.
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This converts to_get_unwinder and to_get_tailcall_unwinder to methods
and arranges for them to use the new delegation scheme.
This just lets us avoid having a differing style (neither new-style
nor INHERIT) of delegation in the tree.
2014-02-19 Tom Tromey <tromey@redhat.com>
* target.c (target_get_unwinder): Rewrite.
(target_get_tailcall_unwinder): Rewrite.
* record-btrace.c (record_btrace_to_get_unwinder): New function.
(record_btrace_to_get_tailcall_unwinder): New function.
(init_record_btrace_ops): Update.
* target.h (struct target_ops) <to_get_unwinder,
to_get_tailcall_unwinder>: Now function pointers. Use
TARGET_DEFAULT_RETURN.
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I happened to notice that nto-procfs.c defines
procfs_remove_hw_breakpoint but never uses it. This caused it not to
be updated by my target-method-updating script. This patch fixes the
function and installs it properly. I have no way to test this,
however.
2014-02-19 Tom Tromey <tromey@redhat.com>
* nto-procfs.c (procfs_remove_hw_breakpoint): Add 'self'
argument.
(init_procfs_ops): Correctly set to_remove_hw_breakpoint.
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This converts to_decr_pc_after_break to the new style of delegation,
removing forward_target_decr_pc_after_break.
2014-02-19 Tom Tromey <tromey@redhat.com>
* record-btrace.c (record_btrace_decr_pc_after_break): Delegate
directly.
* target-delegates.c: Rebuild.
* target.h (struct target_ops) <to_decr_pc_after_break>: Use
TARGET_DEFAULT_FUNC.
* target.c (default_target_decr_pc_after_break): Rename from
forward_target_decr_pc_after_break. Simplify.
(target_decr_pc_after_break): Rely on delegation.
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This removes a few unnecessary calls to INHERIT and de_fault:
* to_doc is only used when a target is registered
* to_magic is only used when a target is pushed and not useful for
current_target.
* to_open and to_close are only ever called using a specific
target_ops object; there is no need to de_fault them.
2014-02-19 Tom Tromey <tromey@redhat.com>
* target.c (update_current_target): Do not INHERIT to_doc or
to_magic. Do not de_fault to_open or to_close.
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exec_set_find_memory_regions is used to modify the exec target.
However, it only has a single caller, and so it is much clearer to
simply set the appropriate field directly. It's also better for the
coming multi-target world to avoid this kind of global state change
anyway.
2014-02-19 Tom Tromey <tromey@redhat.com>
* gcore.h (objfile_find_memory_regions): Declare.
* gcore.c (objfile_find_memory_regions): No longer static. Add
"self" argument.
(_initialize_gcore): Don't call exec_set_find_memory_regions.
* exec.c: Include gcore.h.
(exec_set_find_memory_regions): Remove.
(exec_find_memory_regions): Remove.
(exec_do_find_memory_regions): Remove.
(init_exec_ops): Update.
* defs.h (exec_set_find_memory_regions): Remove.
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This changes instances of TARGET_DEFAULT_RETURN(0) to
TARGET_DEFAULT_RETURN(NULL) when appropriate. The use of "0" was a
relic from an earlier implementation of make-target-delegates; and I
didn't want to go back through the long patch series, fixing up
conflicts, just to change this small detail.
2014-02-19 Tom Tromey <tromey@redhat.com>
* target-delegates.c: Rebuild.
* target.h (struct target_ops) <to_extra_thread_info,
to_thread_name, to_pid_to_exec_file, to_get_section_table,
to_memory_map, to_read_description, to_traceframe_info>: Use NULL,
not 0, in TARGET_DEFAULT_RETURN.
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This cleans up target.c to avoid function casts.
2014-02-19 Tom Tromey <tromey@redhat.com>
* target.c (complete_target_initialization): Remove casts. Use
return_zero_has_execution.
(return_zero): Add "ignore" argument.
(return_zero_has_execution): New function.
(init_dummy_target): Remove casts. Use
return_zero_has_execution.
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During the conversion I kept all the "do not inherit" comments in
update_current_target. However, now they are not needed. This patch
updates the comments for INHERIT and de_fault, and removes the
somewhat odd INHERIT of to_stratum.
2014-02-19 Tom Tromey <tromey@redhat.com>
* target.c (update_current_target): Update comments. Do not
INHERIT to_stratum.
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This switches to_read_description to the "new normal" delegation
scheme. This one was a bit trickier than the other changes due to the
way that target_read_description handled delegation. I examined all
the target implementations of to_read_description and changed the ones
returning NULL to instead delegate.
2014-02-19 Tom Tromey <tromey@redhat.com>
* arm-linux-nat.c (arm_linux_read_description): Delegate when
needed.
* corelow.c (core_read_description): Delegate when needed.
* remote.c (remote_read_description): Delegate when needed.
* target-delegates.c: Rebuild.
* target.c (target_read_description): Rewrite.
* target.h (struct target_ops) <to_read_description>: Update
comment. Use TARGET_DEFAULT_RETURN.
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2014-02-19 Tom Tromey <tromey@redhat.com>
* target-delegates.c: Rebuild.
* target.c (update_current_target): Don't inherit or default
to_can_run.
(find_default_run_target): Check against delegate_can_run.
* target.h (struct target_ops) <to_can_run>: Use
TARGET_DEFAULT_RETURN.
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2014-02-19 Tom Tromey <tromey@redhat.com>
* target-delegates.c: Rebuild.
* target.c (target_disconnect): Unconditionally delegate.
* target.h (struct target_ops) <to_disconnect>: Use
TARGET_DEFAULT_NORETURN.
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2014-02-19 Tom Tromey <tromey@redhat.com>
* record.c (record_stop): Unconditionally delegate.
* target-delegates.c: Rebuild.
* target.c (target_stop_recording): Unconditionally delegate.
* target.h (struct target_ops) <to_stop_recording>: Use
TARGET_DEFAULT_IGNORE.
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2014-02-19 Tom Tromey <tromey@redhat.com>
* target-delegates.c: Rebuild.
* target.c (target_enable_btrace): Unconditionally delegate.
* target.h (struct target_ops) <to_enable_btrace>: Use
TARGET_DEFAULT_NORETURN.
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2014-02-19 Tom Tromey <tromey@redhat.com>
* target-delegates.c: Rebuild.
* target.c (target_read_btrace): Unconditionally delegate.
* target.h (struct target_ops) <to_read_btrace>: Use
TARGET_DEFAULT_NORETURN.
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