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Add netbsd_nat::enable_proc_events in gdb/nat

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Add generic function to enable debugger events in a process.

gdb/ChangeLog:

        * netbsd-nat.h (netbsd_nat::enable_proc_events): Add.
	* netbsd-nat.c: Include <sys/ptrace.h>.
	* (netbsd_nat::enable_proc_events): Add.
This commit is contained in:
Kamil Rytarowski 2020-09-02 19:18:55 +02:00
parent c489f8c6e6
commit feedfcc773
3 changed files with 31 additions and 0 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2020-09-10 Kamil Rytarowski <n54@gmx.com>
* netbsd-nat.h (netbsd_nat::enable_proc_events): Add.
* netbsd-nat.c: Include <sys/ptrace.h>.
* (netbsd_nat::enable_proc_events): Add.
2020-09-10 Kamil Rytarowski <n54@gmx.com> 2020-09-10 Kamil Rytarowski <n54@gmx.com>
* netbsd-nat.h: Include "gdbsupport/function-view.h". * netbsd-nat.h: Include "gdbsupport/function-view.h".

18
gdb/nat/netbsd-nat.c
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@ -22,6 +22,7 @@
#include "gdbsupport/common-debug.h" #include "gdbsupport/common-debug.h"
#include <sys/types.h> #include <sys/types.h>
#include <sys/ptrace.h>
#include <sys/sysctl.h> #include <sys/sysctl.h>
#include <cstring> #include <cstring>
@ -163,4 +164,21 @@ for_each_thread (pid_t pid, gdb::function_view<void (ptid_t)> callback)
netbsd_thread_lister (pid, fn); netbsd_thread_lister (pid, fn);
} }
/* See netbsd-nat.h. */
void
enable_proc_events (pid_t pid)
{
int events;
if (ptrace (PT_GET_EVENT_MASK, pid, &events, sizeof (events)) == -1)
perror_with_name (("ptrace"));
events |= PTRACE_LWP_CREATE;
events |= PTRACE_LWP_EXIT;
if (ptrace (PT_SET_EVENT_MASK, pid, &events, sizeof (events)) == -1)
perror_with_name (("ptrace"));
}
} }

7
gdb/nat/netbsd-nat.h
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@ -50,6 +50,13 @@ extern const char *thread_name (ptid_t ptid);
extern void for_each_thread (pid_t pid, extern void for_each_thread (pid_t pid,
gdb::function_view<void (ptid_t)> callback); gdb::function_view<void (ptid_t)> callback);
/* Enable additional event reporting in a new process specified by PID.
This function assumes internally that the queried process is stopped and
traced. */
extern void enable_proc_events (pid_t pid);
} }
#endif #endif