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gdbserver: turn non-stop and async target ops into methods 

gdbserver/ChangeLog:
2020-02-20  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	Turn process_stratum_target's supports_non_stop, async, and
	start_non_stop ops into methods of process_target.

	* target.h (struct process_stratum_target): Remove the target ops.
	(class process_target): Add the target ops.
	(target_supports_non_stop): Update the macro.
	(target_async): Update the macro.
	(start_non_stop): Remove declaration.
	* target.cc (process_target::supports_non_stop): Define.
	(process_target::async): Define.
	(process_target::start_non_stop): Define.
	(start_non_stop): Remove.

	Update the derived classes and callers below.

	* server.cc (handle_qxfer_siginfo): Update.
	(handle_query): Update.
	* linux-low.cc (linux_target_ops): Update.
	(linux_supports_non_stop): Turn into ...
	(linux_process_target::supports_non_stop): ... this.
	(linux_async): Turn into ...
	(linux_process_target::async): ... this.
	(linux_start_non_stop): Turn into ...
	(linux_process_target::start_non_stop): ... this.
	* linux-low.h (class linux_process_target): Update.
	* lynx-low.cc (lynx_target_ops): Update.
	* nto-low.cc (nto_target_ops): Update.
	(nto_supports_non_stop): Remove; rely on the default behavior
	instead.
	* win32-low.cc (win32_target_ops): Update.
This commit is contained in:
Tankut Baris Aktemur 2020-02-17 16:11:57 +01:00
parent d7abedf7e7
commit 0dc587d425
9 changed files with 86 additions and 64 deletions
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33
gdbserver/ChangeLog
View File

@ -1,3 +1,36 @@
2020-02-20 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
Turn process_stratum_target's supports_non_stop, async, and
start_non_stop ops into methods of process_target.
* target.h (struct process_stratum_target): Remove the target ops.
(class process_target): Add the target ops.
(target_supports_non_stop): Update the macro.
(target_async): Update the macro.
(start_non_stop): Remove declaration.
* target.cc (process_target::supports_non_stop): Define.
(process_target::async): Define.
(process_target::start_non_stop): Define.
(start_non_stop): Remove.
Update the derived classes and callers below.
* server.cc (handle_qxfer_siginfo): Update.
(handle_query): Update.
* linux-low.cc (linux_target_ops): Update.
(linux_supports_non_stop): Turn into ...
(linux_process_target::supports_non_stop): ... this.
(linux_async): Turn into ...
(linux_process_target::async): ... this.
(linux_start_non_stop): Turn into ...
(linux_process_target::start_non_stop): ... this.
* linux-low.h (class linux_process_target): Update.
* lynx-low.cc (lynx_target_ops): Update.
* nto-low.cc (nto_target_ops): Update.
(nto_supports_non_stop): Remove; rely on the default behavior
instead.
* win32-low.cc (win32_target_ops): Update.
2020-02-20 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
Turn process_stratum_target's qxfer_siginfo op into a method of

23
gdbserver/linux-low.cc
View File

@ -6265,16 +6265,16 @@ sigchld_handler (int signo)
errno = old_errno;
}
static int
linux_supports_non_stop (void)
bool
linux_process_target::supports_non_stop ()
{
return 1;
return true;
}
static int
linux_async (int enable)
bool
linux_process_target::async (bool enable)
{
int previous = target_is_async_p ();
bool previous = target_is_async_p ();
if (debug_threads)
debug_printf ("linux_async (%d), previous=%d\n",
@ -6326,13 +6326,13 @@ linux_async (int enable)
return previous;
}
static int
linux_start_non_stop (int nonstop)
int
linux_process_target::start_non_stop (bool nonstop)
{
/* Register or unregister from event-loop accordingly. */
linux_async (nonstop);
target_async (nonstop);
if (target_is_async_p () != (nonstop != 0))
if (target_is_async_p () != (nonstop != false))
return -1;
return 0;
@ -7429,9 +7429,6 @@ linux_get_hwcap2 (int wordsize)
static linux_process_target the_linux_target;
static process_stratum_target linux_target_ops = {
linux_supports_non_stop,
linux_async,
linux_start_non_stop,
linux_supports_multi_process,
linux_supports_fork_events,
linux_supports_vfork_events,

6
gdbserver/linux-low.h
View File

@ -357,6 +357,12 @@ public:
int qxfer_siginfo (const char *annex, unsigned char *readbuf,
unsigned const char *writebuf,
CORE_ADDR offset, int len) override;
bool supports_non_stop () override;
bool async (bool enable) override;
int start_non_stop (bool enable) override;
};
#define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr)))

3
gdbserver/lynx-low.cc
View File

@ -735,9 +735,6 @@ static lynx_process_target the_lynx_target;
/* The LynxOS target_ops vector. */
static process_stratum_target lynx_target_ops = {
NULL, /* supports_non_stop */
NULL, /* async */
NULL, /* start_non_stop */
NULL, /* supports_multi_process */
NULL, /* supports_fork_events */
NULL, /* supports_vfork_events */

12
gdbserver/nto-low.cc
View File

@ -933,15 +933,6 @@ nto_process_target::stopped_data_address ()
return ret;
}
/* We do not currently support non-stop. */
static int
nto_supports_non_stop (void)
{
TRACE ("%s\n", __func__);
return 0;
}
/* Implementation of the target_ops method "sw_breakpoint_from_kind". */
static const gdb_byte *
@ -956,9 +947,6 @@ nto_sw_breakpoint_from_kind (int kind, int *size)
static nto_process_target the_nto_target;
static process_stratum_target nto_target_ops = {
nto_supports_non_stop,
NULL, /* async */
NULL, /* start_non_stop */
NULL, /* supports_multi_process */
NULL, /* supports_fork_events */
NULL, /* supports_vfork_events */

6
gdbserver/server.cc
View File

@ -740,7 +740,7 @@ handle_general_set (char *own_buf)
}
req_str = req ? "non-stop" : "all-stop";
if (start_non_stop (req) != 0)
if (the_target->pt->start_non_stop (req == 1) != 0)
{
fprintf (stderr, "Setting %s mode failed\n", req_str);
write_enn (own_buf);
@ -1234,7 +1234,7 @@ handle_detach (char *own_buf)
debug_printf ("Forcing non-stop mode\n");
non_stop = true;
start_non_stop (1);
the_target->pt->start_non_stop (true);
}
process->gdb_detached = 1;
@ -3885,7 +3885,7 @@ captured_main (int argc, char *argv[])
down without informing GDB. */
if (!non_stop)
{
if (start_non_stop (1))
if (the_target->pt->start_non_stop (true))
non_stop = 1;
/* Detaching implicitly resumes all threads;

35
gdbserver/target.cc
View File

@ -264,20 +264,6 @@ target_supports_multi_process (void)
(*the_target->supports_multi_process) () : 0);
}
int
start_non_stop (int nonstop)
{
if (the_target->start_non_stop == NULL)
{
if (nonstop)
return -1;
else
return 0;
}
return (*the_target->start_non_stop) (nonstop);
}
void
set_target_ops (process_stratum_target *target)
{
@ -541,3 +527,24 @@ process_target::qxfer_siginfo (const char *annex, unsigned char *readbuf,
{
gdb_assert_not_reached ("target op qxfer_siginfo not supported");
}
bool
process_target::supports_non_stop ()
{
return false;
}
bool
process_target::async (bool enable)
{
return false;
}
int
process_target::start_non_stop (bool enable)
{
if (enable)
return -1;
else
return 0;
}

29
gdbserver/target.h
View File

@ -70,16 +70,6 @@ class process_target;
shared code. */
struct process_stratum_target
{
int (*supports_non_stop) (void);
/* Enables async target events. Returns the previous enable
state. */
int (*async) (int enable);
/* Switch to non-stop (1) or all-stop (0) mode. Return 0 on
success, -1 otherwise. */
int (*start_non_stop) (int);
/* Returns true if the target supports multi-process debugging. */
int (*supports_multi_process) (void);
@ -485,6 +475,17 @@ public:
virtual int qxfer_siginfo (const char *annex, unsigned char *readbuf,
unsigned const char *writebuf,
CORE_ADDR offset, int len);
/* Return true if non-stop mode is supported. */
virtual bool supports_non_stop ();
/* Enables async target events. Returns the previous enable
state. */
virtual bool async (bool enable);
/* Switch to non-stop (ENABLE == true) or all-stop (ENABLE == false)
mode. Return 0 on success, -1 otherwise. */
virtual int start_non_stop (bool enable);
};
extern process_stratum_target *the_target;
@ -537,10 +538,10 @@ int kill_inferior (process_info *proc);
the_target->pt->join (pid)
#define target_supports_non_stop() \
(the_target->supports_non_stop ? (*the_target->supports_non_stop ) () : 0)
the_target->pt->supports_non_stop ()
#define target_async(enable) \
(the_target->async ? (*the_target->async) (enable) : 0)
the_target->pt->async (enable)
#define target_process_qsupported(features, count) \
do \
@ -696,10 +697,6 @@ target_read_btrace_conf (struct btrace_target_info *tinfo,
(the_target->supports_software_single_step ? \
(*the_target->supports_software_single_step) () : 0)
/* Start non-stop mode, returns 0 on success, -1 on failure. */
int start_non_stop (int nonstop);
ptid_t mywait (ptid_t ptid, struct target_waitstatus *ourstatus, int options,
int connected_wait);

3
gdbserver/win32-low.cc
View File

@ -1852,9 +1852,6 @@ win32_sw_breakpoint_from_kind (int kind, int *size)
static win32_process_target the_win32_target;
static process_stratum_target win32_target_ops = {
NULL, /* supports_non_stop */
NULL, /* async */
NULL, /* start_non_stop */
NULL, /* supports_multi_process */
NULL, /* supports_fork_events */
NULL, /* supports_vfork_events */