Support JIT debugging on MS-Windows
gdb/ChangeLog: 2016-06-30 Руслан Ижбулатов <lrn1986@gmail.com> PR gdb/14529 * windows-nat.c (signal_event_command): New command 'signal-event' for W32 JIT debug support. * NEWS: Add an entry about the new 'signal-event' command. gdb/doc/ChangeLog: 2016-06-30 Руслан Ижбулатов <lrn1986@gmail.com> * gdb.texinfo (Cygwin Native): Document the new 'signal-event' command.
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Руслан Ижбулатов
Eli Zaretskii
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2016-06-30 Руслан Ижбулатов <lrn1986@gmail.com>
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PR gdb/14529
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* windows-nat.c (signal_event_command): New command 'signal-event'
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for W32 JIT debug support.
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* NEWS: Add an entry about the new 'signal-event' command.
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2016-07-22 Tom Tromey <tom@tromey.com>
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PR rust/20162:
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7
gdb/NEWS
7
gdb/NEWS
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@ -85,6 +85,13 @@ new-ui INTERP TTY
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** gdb.Breakpoint objects have a new attribute "pending", which
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indicates whether the breakpoint is pending.
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signal-event EVENTID
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Signal ("set") the given MS-Windows event object. This is used in
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conjunction with the Windows JIT debugging (AeDebug) support, where
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the OS suspends a crashing process until a debugger can attach to
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it. Resuming the crashing process, in order to debug it, is done by
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signalling an event.
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* Support for tracepoints and fast tracepoints on s390-linux and s390x-linux
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was added in GDBserver, including JIT compiling fast tracepoint's
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conditional expression bytecode into native code.
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@ -1,3 +1,8 @@
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2016-06-30 Руслан Ижбулатов <lrn1986@gmail.com>
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* gdb.texinfo (Cygwin Native): Document the new 'signal-event'
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command.
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2016-07-13 Tom Tromey <tom@tromey.com>
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PR python/15620, PR python/18620:
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@ -11724,4 +11729,5 @@ mode: change-log
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left-margin: 8
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fill-column: 74
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version-control: never
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coding: utf-8
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End:
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@ -21520,6 +21520,35 @@ This command displays thread specific information stored in the
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Thread Information Block (readable on the X86 CPU family using @code{$fs}
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selector for 32-bit programs and @code{$gs} for 64-bit programs).
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@kindex signal-event
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@item signal-event @var{id}
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This command signals an event with user-provided @var{id}. Used to resume
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crashing process when attached to it using MS-Windows JIT debugging (AeDebug).
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To use it, create or edit the following keys in
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@code{HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug} and/or
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@code{HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\AeDebug}
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(for x86_64 versions):
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@itemize @minus
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@item
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@code{Debugger} (REG_SZ) --- a command to launch the debugger.
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Suggested command is: @code{@var{fully-qualified-path-to-gdb.exe} -ex
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"attach %ld" -ex "signal-event %ld" -ex "continue"}.
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The first @code{%ld} will be replaced by the process ID of the
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crashing process, the second @code{%ld} will be replaced by the ID of
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the event that blocks the crashing process, waiting for @value{GDBN}
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to attach.
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@item
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@code{Auto} (REG_SZ) --- either @code{1} or @code{0}. @code{1} will
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make the system run debugger specified by the Debugger key
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automatically, @code{0} will cause a dialog box with ``OK'' and
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``Cancel'' buttons to appear, which allows the user to either
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terminate the crashing process (OK) or debug it (Cancel).
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@end itemize
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@kindex set cygwin-exceptions
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@cindex debugging the Cygwin DLL
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@cindex Cygwin DLL, debugging
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@ -56,6 +56,7 @@
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#include "solist.h"
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#include "solib.h"
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#include "xml-support.h"
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#include "inttypes.h"
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#include "i386-tdep.h"
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#include "i387-tdep.h"
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@ -825,6 +826,25 @@ windows_clear_solib (void)
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solib_end = &solib_start;
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}
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static void
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signal_event_command (char *args, int from_tty)
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{
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uintptr_t event_id = 0;
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char *endargs = NULL;
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if (args == NULL)
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error (_("signal-event requires an argument (integer event id)"));
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event_id = strtoumax (args, &endargs, 10);
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if ((errno == ERANGE) || (event_id == 0) || (event_id > UINTPTR_MAX) ||
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((HANDLE) event_id == INVALID_HANDLE_VALUE))
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error (_("Failed to convert `%s' to event id"), args);
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SetEvent ((HANDLE) event_id);
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CloseHandle ((HANDLE) event_id);
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}
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/* Handle DEBUG_STRING output from child process.
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Cygwin prepends its messages with a "cygwin:". Interpret this as
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a Cygwin signal. Otherwise just print the string as a warning. */
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@ -2550,6 +2570,13 @@ _initialize_windows_nat (void)
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cygwin_internal (CW_SET_DOS_FILE_WARNING, 0);
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#endif
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add_com ("signal-event", class_run, signal_event_command, _("\
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Signal a crashed process with event ID, to allow its debugging.\n\
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This command is needed in support of setting up GDB as JIT debugger on \
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MS-Windows. The command should be invoked from the GDB command line using \
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the '-ex' command-line option. The ID of the event that blocks the \
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crashed process will be supplied by the Windows JIT debugging mechanism."));
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#ifdef __CYGWIN__
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add_setshow_boolean_cmd ("shell", class_support, &useshell, _("\
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Set use of shell to start subprocess."), _("\
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