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Use target_continue{,_no_signal} instead of target_resume 

This commit implements a new function, target_continue, on top of the
target_resume function.  Then, it replaces all calls to target_resume
by calls to target_continue or to the already existing
target_continue_no_signal.

This is one of the (many) necessary steps needed to consolidate the
target interface between GDB and gdbserver.  In particular, I am
interested in the impact this change will have on the unification of
the fork_inferior function (which I have been working on).

Tested on the BuildBot, no regressions introduced.

gdb/gdbserver/ChangeLog:
2016-09-31  Sergio Durigan Junior  <sergiodj@redhat.com>

	* server.c (start_inferior): New variable 'ptid'.  Replace calls
	to the_target->resume by target_continue{,_no_signal}, depending
	on the case.
	* target.c (target_stop_and_wait): Call target_continue_no_signal
	instead of the_target->resume.
	(target_continue): New function.

gdb/ChangeLog:
2016-09-31  Sergio Durigan Junior  <sergiodj@redhat.com>

	* fork-child.c (startup_inferior): Replace calls to target_resume
	by target_continue{,_no_signal}, depending on the case.
	* linux-nat.c (cleanup_target_stop): Call
	target_continue_no_signal instead of target_resume.
	* procfs.c (procfs_wait): Likewise.
	* target.c (target_continue): New function.
	* target/target.h (target_continue): New prototype.
This commit is contained in:
Sergio Durigan Junior 2016-08-25 16:26:24 -04:00
parent 424844864a
commit 049a857091
9 changed files with 60 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
gdb/ChangeLog
View File

@ -1,3 +1,13 @@
2016-09-01 Sergio Durigan Junior <sergiodj@redhat.com>
* fork-child.c (startup_inferior): Replace calls to target_resume
by target_continue{,_no_signal}, depending on the case.
* linux-nat.c (cleanup_target_stop): Call
target_continue_no_signal instead of target_resume.
* procfs.c (procfs_wait): Likewise.
* target.c (target_continue): New function.
* target/target.h (target_continue): New prototype.
2016-08-31 Yao Qi <yao.qi@linaro.org>
* record-full.c (record_full_insert_breakpoint): Fix typo.

4
gdb/fork-child.c
View File

@ -514,7 +514,7 @@ startup_inferior (int ntraps)
if (resume_signal != GDB_SIGNAL_TRAP)
{
/* Let shell child handle its own signals in its own way. */
target_resume (resume_ptid, 0, resume_signal);
target_continue (resume_ptid, resume_signal);
}
else
{
@ -540,7 +540,7 @@ startup_inferior (int ntraps)
break;
/* Just make it go on. */
target_resume (resume_ptid, 0, GDB_SIGNAL_0);
target_continue_no_signal (resume_ptid);
}
}

9
gdb/gdbserver/ChangeLog
View File

@ -1,3 +1,12 @@
2016-09-01 Sergio Durigan Junior <sergiodj@redhat.com>
* server.c (start_inferior): New variable 'ptid'. Replace calls
to the_target->resume by target_continue{,_no_signal}, depending
on the case.
* target.c (target_stop_and_wait): Call target_continue_no_signal
instead of the_target->resume.
(target_continue): New function.
2016-08-31 Antoine Tremblay <antoine.tremblay@ericsson.com>
* linux-low.c (linux_wait_1): Move event switch after unsuspend_lwps.

25
gdb/gdbserver/server.c
View File

@ -258,12 +258,7 @@ start_inferior (char **argv)
if (wrapper_argv != NULL)
{
struct thread_resume resume_info;
memset (&resume_info, 0, sizeof (resume_info));
resume_info.thread = pid_to_ptid (signal_pid);
resume_info.kind = resume_continue;
resume_info.sig = 0;
ptid_t ptid = pid_to_ptid (signal_pid);
last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0);
@ -271,7 +266,7 @@ start_inferior (char **argv)
{
do
{
(*the_target->resume) (&resume_info, 1);
target_continue_no_signal (ptid);
last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0);
if (last_status.kind != TARGET_WAITKIND_STOPPED)
@ -3929,7 +3924,6 @@ process_serial_event (void)
if ((tracing && disconnected_tracing) || any_persistent_commands ())
{
struct thread_resume resume_info;
struct process_info *process = find_process_pid (pid);
if (process == NULL)
@ -3965,10 +3959,7 @@ process_serial_event (void)
process->gdb_detached = 1;
/* Detaching implicitly resumes all threads. */
resume_info.thread = minus_one_ptid;
resume_info.kind = resume_continue;
resume_info.sig = 0;
(*the_target->resume) (&resume_info, 1);
target_continue_no_signal (minus_one_ptid);
write_ok (own_buf);
break; /* from switch/case */
@ -4428,7 +4419,7 @@ handle_target_event (int err, gdb_client_data client_data)
/* A thread stopped with a signal, but gdb isn't
connected to handle it. Pass it down to the
inferior, as if it wasn't being traced. */
struct thread_resume resume_info;
enum gdb_signal signal;
if (debug_threads)
debug_printf ("GDB not connected; forwarding event %d for"
@ -4436,13 +4427,11 @@ handle_target_event (int err, gdb_client_data client_data)
(int) last_status.kind,
target_pid_to_str (last_ptid));
resume_info.thread = last_ptid;
resume_info.kind = resume_continue;
if (last_status.kind == TARGET_WAITKIND_STOPPED)
resume_info.sig = gdb_signal_to_host (last_status.value.sig);
signal = last_status.value.sig;
else
resume_info.sig = 0;
(*the_target->resume) (&resume_info, 1);
signal = GDB_SIGNAL_0;
target_continue (last_ptid, signal);
}
}
else

19
gdb/gdbserver/target.c
View File

@ -248,12 +248,8 @@ target_stop_and_wait (ptid_t ptid)
{
struct target_waitstatus status;
int was_non_stop = non_stop;
struct thread_resume resume_info;
resume_info.thread = ptid;
resume_info.kind = resume_stop;
resume_info.sig = GDB_SIGNAL_0;
(*the_target->resume) (&resume_info, 1);
target_continue_no_signal (ptid);
non_stop = 1;
mywait (ptid, &status, 0, 0);
@ -273,6 +269,19 @@ target_continue_no_signal (ptid_t ptid)
(*the_target->resume) (&resume_info, 1);
}
/* See target/target.h. */
void
target_continue (ptid_t ptid, enum gdb_signal signal)
{
struct thread_resume resume_info;
resume_info.thread = ptid;
resume_info.kind = resume_continue;
resume_info.sig = gdb_signal_to_host (signal);
(*the_target->resume) (&resume_info, 1);
}
int
start_non_stop (int nonstop)
{

2
gdb/linux-nat.c
View File

@ -4289,7 +4289,7 @@ cleanup_target_stop (void *arg)
gdb_assert (arg != NULL);
/* Unpause all */
target_resume (*ptid, 0, GDB_SIGNAL_0);
target_continue_no_signal (*ptid);
}
static VEC(static_tracepoint_marker_p) *

4
gdb/procfs.c
View File

@ -3716,7 +3716,7 @@ wait_again:
else
{
/* How to keep going without returning to wfi: */
target_resume (ptid, 0, GDB_SIGNAL_0);
target_continue_no_signal (ptid);
goto wait_again;
}
}
@ -3742,7 +3742,7 @@ wait_again:
/* This is an internal event and should be transparent
to wfi, so resume the execution and wait again. See
comment in procfs_init_inferior() for more details. */
target_resume (ptid, 0, GDB_SIGNAL_0);
target_continue_no_signal (ptid);
goto wait_again;
}
#endif

8
gdb/target.c
View File

@ -3449,6 +3449,14 @@ target_continue_no_signal (ptid_t ptid)
target_resume (ptid, 0, GDB_SIGNAL_0);
}
/* See target/target.h. */
void
target_continue (ptid_t ptid, enum gdb_signal signal)
{
target_resume (ptid, 0, signal);
}
/* Concatenate ELEM to LIST, a comma separate list, and return the
result. The LIST incoming argument is released. */

10
gdb/target/target.h
View File

@ -64,10 +64,14 @@ extern int target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr,
extern void target_stop_and_wait (ptid_t ptid);
/* Restart a target previously stopped by target_stop_and_wait.
No signal is delivered to the target. This function must be
provided by the client. */
/* Restart a target previously stopped. No signal is delivered to the
target. This function must be provided by the client. */
extern void target_continue_no_signal (ptid_t ptid);
/* Restart a target previously stopped. SIGNAL is delivered to the
target. This function must be provided by the client. */
extern void target_continue (ptid_t ptid, enum gdb_signal signal);
#endif /* TARGET_COMMON_H */