diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c
index 419f13b8474c..b8662bf67f34 100644
--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c
+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_proc.c
@@ -79,7 +79,9 @@
  */
 
 #include <sys/wait.h>
+#if defined(sun)
 #include <sys/lwp.h>
+#endif
 #include <strings.h>
 #include <signal.h>
 #include <assert.h>
@@ -93,6 +95,7 @@
 #define	IS_SYS_FORK(w)	(w == SYS_vfork || w == SYS_fork1 ||	\
 			w == SYS_forkall || w == SYS_forksys)
 
+#ifdef DOODAD
 static dt_bkpt_t *
 dt_proc_bpcreate(dt_proc_t *dpr, uintptr_t addr, dt_bkpt_f *func, void *data)
 {
@@ -114,27 +117,36 @@ dt_proc_bpcreate(dt_proc_t *dpr, uintptr_t addr, dt_bkpt_f *func, void *data)
 
 	return (dbp);
 }
+#endif
 
 static void
 dt_proc_bpdestroy(dt_proc_t *dpr, int delbkpts)
 {
+#if defined(sun)
 	int state = Pstate(dpr->dpr_proc);
+#else
+	int state = proc_state(dpr->dpr_proc);
+#endif
 	dt_bkpt_t *dbp, *nbp;
 
 	assert(DT_MUTEX_HELD(&dpr->dpr_lock));
 
 	for (dbp = dt_list_next(&dpr->dpr_bps); dbp != NULL; dbp = nbp) {
+printf("%s:%s(%d): DOODAD\n",__FUNCTION__,__FILE__,__LINE__);
+#ifdef DOODAD
 		if (delbkpts && dbp->dbp_active &&
 		    state != PS_LOST && state != PS_UNDEAD) {
 			(void) Pdelbkpt(dpr->dpr_proc,
 			    dbp->dbp_addr, dbp->dbp_instr);
 		}
+#endif
 		nbp = dt_list_next(dbp);
 		dt_list_delete(&dpr->dpr_bps, dbp);
 		dt_free(dpr->dpr_hdl, dbp);
 	}
 }
 
+#ifdef DOODAD
 static void
 dt_proc_bpmatch(dtrace_hdl_t *dtp, dt_proc_t *dpr)
 {
@@ -161,6 +173,7 @@ dt_proc_bpmatch(dtrace_hdl_t *dtp, dt_proc_t *dpr)
 	dbp->dbp_func(dtp, dpr, dbp->dbp_data);
 	(void) Pxecbkpt(dpr->dpr_proc, dbp->dbp_instr);
 }
+#endif
 
 static void
 dt_proc_bpenable(dt_proc_t *dpr)
@@ -171,9 +184,12 @@ dt_proc_bpenable(dt_proc_t *dpr)
 
 	for (dbp = dt_list_next(&dpr->dpr_bps);
 	    dbp != NULL; dbp = dt_list_next(dbp)) {
+printf("%s:%s(%d): DOODAD\n",__FUNCTION__,__FILE__,__LINE__);
+#ifdef DOODAD
 		if (!dbp->dbp_active && Psetbkpt(dpr->dpr_proc,
 		    dbp->dbp_addr, &dbp->dbp_instr) == 0)
 			dbp->dbp_active = B_TRUE;
+#endif
 	}
 
 	dt_dprintf("breakpoints enabled\n");
@@ -188,9 +204,12 @@ dt_proc_bpdisable(dt_proc_t *dpr)
 
 	for (dbp = dt_list_next(&dpr->dpr_bps);
 	    dbp != NULL; dbp = dt_list_next(dbp)) {
+printf("%s:%s(%d): DOODAD\n",__FUNCTION__,__FILE__,__LINE__);
+#ifdef DOODAD
 		if (dbp->dbp_active && Pdelbkpt(dpr->dpr_proc,
 		    dbp->dbp_addr, dbp->dbp_instr) == 0)
 			dbp->dbp_active = B_FALSE;
+#endif
 	}
 
 	dt_dprintf("breakpoints disabled\n");
@@ -263,6 +282,7 @@ dt_proc_bpmain(dtrace_hdl_t *dtp, dt_proc_t *dpr, const char *fname)
 	dt_proc_stop(dpr, DT_PROC_STOP_MAIN);
 }
 
+#if defined(sun)
 static void
 dt_proc_rdevent(dtrace_hdl_t *dtp, dt_proc_t *dpr, const char *evname)
 {
@@ -439,6 +459,7 @@ dt_proc_waitrun(dt_proc_t *dpr)
 
 	(void) pthread_mutex_lock(&dpr->dpr_lock);
 }
+#endif
 
 typedef struct dt_proc_control_data {
 	dtrace_hdl_t *dpcd_hdl;			/* DTrace handle */
@@ -465,11 +486,13 @@ dt_proc_control(void *arg)
 	dt_proc_t *dpr = datap->dpcd_proc;
 	dt_proc_hash_t *dph = dpr->dpr_hdl->dt_procs;
 	struct ps_prochandle *P = dpr->dpr_proc;
-
-	int pfd = Pctlfd(P);
 	int pid = dpr->dpr_pid;
 
+#if defined(sun)
+	int pfd = Pctlfd(P);
+
 	const long wstop = PCWSTOP;
+#endif
 	int notify = B_FALSE;
 
 	/*
@@ -487,6 +510,7 @@ dt_proc_control(void *arg)
 	 */
 	(void) pthread_mutex_lock(&dpr->dpr_lock);
 
+#if defined(sun)
 	(void) Punsetflags(P, PR_ASYNC);	/* require synchronous mode */
 	(void) Psetflags(P, PR_BPTADJ);		/* always adjust eip on x86 */
 	(void) Punsetflags(P, PR_FORK);		/* do not inherit on fork */
@@ -532,6 +556,20 @@ dt_proc_control(void *arg)
 		dt_dprintf("pid %d: failed to set running: %s\n",
 		    (int)dpr->dpr_pid, strerror(errno));
 	}
+#else
+	/*
+	 * If PR_KLC is set, we created the process; otherwise we grabbed it.
+	 * Check for an appropriate stop request and wait for dt_proc_continue.
+	 */
+	if (proc_getflags(P) & PR_KLC)
+		dt_proc_stop(dpr, DT_PROC_STOP_CREATE);
+	else
+		dt_proc_stop(dpr, DT_PROC_STOP_GRAB);
+
+	if (proc_continue(P) != 0)
+		dt_dprintf("pid %d: failed to set running: %s\n",
+		    (int)dpr->dpr_pid, strerror(errno));
+#endif
 
 	(void) pthread_mutex_unlock(&dpr->dpr_lock);
 
@@ -545,20 +583,33 @@ dt_proc_control(void *arg)
 	 * Pwait() (which will return immediately) and do our processing.
 	 */
 	while (!dpr->dpr_quit) {
+#if defined(sun)
 		const lwpstatus_t *psp;
 
 		if (write(pfd, &wstop, sizeof (wstop)) == -1 && errno == EINTR)
 			continue; /* check dpr_quit and continue waiting */
+#else
+		/* Wait for the process to report status. */
+		proc_wait(P);
+#endif
 
 		(void) pthread_mutex_lock(&dpr->dpr_lock);
+
+#if defined(sun)
 pwait_locked:
 		if (Pstopstatus(P, PCNULL, 0) == -1 && errno == EINTR) {
 			(void) pthread_mutex_unlock(&dpr->dpr_lock);
 			continue; /* check dpr_quit and continue waiting */
 		}
+#endif
 
+#if defined(sun)
 		switch (Pstate(P)) {
+#else
+		switch (proc_state(P)) {
+#endif
 		case PS_STOP:
+#ifdef DOODAD
 			psp = &Pstatus(P)->pr_lwp;
 
 			dt_dprintf("pid %d: proc stopped showing %d/%d\n",
@@ -601,11 +652,14 @@ dt_proc_control(void *arg)
 			else if (psp->pr_why == PR_SYSEXIT &&
 			    IS_SYS_EXEC(psp->pr_what))
 				dt_proc_attach(dpr, B_TRUE);
+#endif
 			break;
 
 		case PS_LOST:
+#if defined(sun)
 			if (Preopen(P) == 0)
 				goto pwait_locked;
+#endif
 
 			dt_dprintf("pid %d: proc lost: %s\n",
 			    pid, strerror(errno));
@@ -621,10 +675,12 @@ dt_proc_control(void *arg)
 			break;
 		}
 
+#if defined(sun)
 		if (Pstate(P) != PS_UNDEAD && Psetrun(P, 0, 0) == -1) {
 			dt_dprintf("pid %d: failed to set running: %s\n",
 			    (int)dpr->dpr_pid, strerror(errno));
 		}
+#endif
 
 		(void) pthread_mutex_unlock(&dpr->dpr_lock);
 	}
@@ -664,7 +720,11 @@ dt_proc_error(dtrace_hdl_t *dtp, dt_proc_t *dpr, const char *format, ...)
 	va_end(ap);
 
 	if (dpr->dpr_proc != NULL)
+#if defined(sun)
 		Prelease(dpr->dpr_proc, 0);
+#else
+		proc_detach(dpr->dpr_proc);
+#endif
 
 	dt_free(dtp, dpr);
 	(void) dt_set_errno(dtp, EDT_COMPILER);
@@ -675,7 +735,11 @@ dt_proc_t *
 dt_proc_lookup(dtrace_hdl_t *dtp, struct ps_prochandle *P, int remove)
 {
 	dt_proc_hash_t *dph = dtp->dt_procs;
+#if defined(sun)
 	pid_t pid = Pstatus(P)->pr_pid;
+#else
+	pid_t pid = proc_getpid(P);
+#endif
 	dt_proc_t *dpr, **dpp = &dph->dph_hash[pid & (dph->dph_hashlen - 1)];
 
 	for (dpr = *dpp; dpr != NULL; dpr = dpr->dpr_hash) {
@@ -709,9 +773,17 @@ dt_proc_destroy(dtrace_hdl_t *dtp, struct ps_prochandle *P)
 	 * an external debugger and we were waiting in dt_proc_waitrun().
 	 * Leave the process in this condition using PRELEASE_HANG.
 	 */
+#if defined(sun)
 	if (!(Pstatus(dpr->dpr_proc)->pr_flags & (PR_KLC | PR_RLC))) {
+#else
+	if (!(proc_getflags(dpr->dpr_proc) & (PR_KLC | PR_RLC))) {
+#endif
 		dt_dprintf("abandoning pid %d\n", (int)dpr->dpr_pid);
+#if defined(sun)
 		rflag = PRELEASE_HANG;
+#else
+		rflag = 0 /* XXX */;
+#endif
 	} else {
 		dt_dprintf("releasing pid %d\n", (int)dpr->dpr_pid);
 		rflag = 0; /* apply kill or run-on-last-close */
@@ -734,7 +806,11 @@ dt_proc_destroy(dtrace_hdl_t *dtp, struct ps_prochandle *P)
 		 */
 		(void) pthread_mutex_lock(&dpr->dpr_lock);
 		dpr->dpr_quit = B_TRUE;
+#if defined(sun)
 		(void) _lwp_kill(dpr->dpr_tid, SIGCANCEL);
+#else
+		(void) pthread_kill(dpr->dpr_tid, SIGUSR1);
+#endif
 
 		/*
 		 * If the process is currently idling in dt_proc_stop(), re-
@@ -782,7 +858,11 @@ dt_proc_destroy(dtrace_hdl_t *dtp, struct ps_prochandle *P)
 	}
 
 	dt_list_delete(&dph->dph_lrulist, dpr);
+#if defined(sun)
 	Prelease(dpr->dpr_proc, rflag);
+#else
+	proc_detach(dpr->dpr_proc);
+#endif
 	dt_free(dtp, dpr);
 }
 
@@ -802,7 +882,11 @@ dt_proc_create_thread(dtrace_hdl_t *dtp, dt_proc_t *dpr, uint_t stop)
 
 	(void) sigfillset(&nset);
 	(void) sigdelset(&nset, SIGABRT);	/* unblocked for assert() */
+#if defined(sun)
 	(void) sigdelset(&nset, SIGCANCEL);	/* see dt_proc_destroy() */
+#else
+	(void) sigdelset(&nset, SIGUSR1);	/* see dt_proc_destroy() */
+#endif
 
 	data.dpcd_hdl = dtp;
 	data.dpcd_proc = dpr;
@@ -830,14 +914,21 @@ dt_proc_create_thread(dtrace_hdl_t *dtp, dt_proc_t *dpr, uint_t stop)
 		 * small amount of useful information to help figure it out.
 		 */
 		if (dpr->dpr_done) {
+#if defined(sun)
 			const psinfo_t *prp = Ppsinfo(dpr->dpr_proc);
 			int stat = prp ? prp->pr_wstat : 0;
+#endif
 			int pid = dpr->dpr_pid;
 
+#if defined(sun)
 			if (Pstate(dpr->dpr_proc) == PS_LOST) {
+#else
+			if (proc_state(dpr->dpr_proc) == PS_LOST) {
+#endif
 				(void) dt_proc_error(dpr->dpr_hdl, dpr,
 				    "failed to control pid %d: process exec'd "
 				    "set-id or unobservable program\n", pid);
+#if defined(sun)
 			} else if (WIFSIGNALED(stat)) {
 				(void) dt_proc_error(dpr->dpr_hdl, dpr,
 				    "failed to control pid %d: process died "
@@ -846,6 +937,7 @@ dt_proc_create_thread(dtrace_hdl_t *dtp, dt_proc_t *dpr, uint_t stop)
 				(void) dt_proc_error(dpr->dpr_hdl, dpr,
 				    "failed to control pid %d: process exited "
 				    "with status %d\n", pid, WEXITSTATUS(stat));
+#endif
 			}
 
 			err = ESRCH; /* cause grab() or create() to fail */
@@ -875,6 +967,7 @@ dt_proc_create(dtrace_hdl_t *dtp, const char *file, char *const *argv)
 	(void) pthread_mutex_init(&dpr->dpr_lock, NULL);
 	(void) pthread_cond_init(&dpr->dpr_cv, NULL);
 
+#if defined(sun)
 	if ((dpr->dpr_proc = Pcreate(file, argv, &err, NULL, 0)) == NULL) {
 		return (dt_proc_error(dtp, dpr,
 		    "failed to execute %s: %s\n", file, Pcreate_error(err)));
@@ -885,8 +978,21 @@ dt_proc_create(dtrace_hdl_t *dtp, const char *file, char *const *argv)
 
 	(void) Punsetflags(dpr->dpr_proc, PR_RLC);
 	(void) Psetflags(dpr->dpr_proc, PR_KLC);
+#else
+	(void) proc_clearflags(dpr->dpr_proc, PR_RLC);
+	(void) proc_setflags(dpr->dpr_proc, PR_KLC);
+	if ((err = proc_create(file, argv, &dpr->dpr_proc)) != 0)
+		return (dt_proc_error(dtp, dpr,
+		    "failed to execute %s: %s\n", file, strerror(err)));
+	dpr->dpr_hdl = dtp;
+	dpr->dpr_pid = proc_getpid(dpr->dpr_proc);
+#endif
 
+#if defined(sun)
 	if (dt_proc_create_thread(dtp, dpr, dtp->dt_prcmode) != 0)
+#else
+	if (dt_proc_create_thread(dtp, dpr, DT_PROC_STOP_IDLE) != 0)
+#endif
 		return (NULL); /* dt_proc_error() has been called for us */
 
 	dpr->dpr_hash = dph->dph_hash[dpr->dpr_pid & (dph->dph_hashlen - 1)];
@@ -942,16 +1048,27 @@ dt_proc_grab(dtrace_hdl_t *dtp, pid_t pid, int flags, int nomonitor)
 	(void) pthread_mutex_init(&dpr->dpr_lock, NULL);
 	(void) pthread_cond_init(&dpr->dpr_cv, NULL);
 
+#if defined(sun)
 	if ((dpr->dpr_proc = Pgrab(pid, flags, &err)) == NULL) {
 		return (dt_proc_error(dtp, dpr,
 		    "failed to grab pid %d: %s\n", (int)pid, Pgrab_error(err)));
 	}
+#else
+	if ((err = proc_attach(pid, flags, &dpr->dpr_proc)) != 0)
+		return (dt_proc_error(dtp, dpr,
+		    "failed to grab pid %d: %s\n", (int) pid, strerror(err)));
+#endif
 
 	dpr->dpr_hdl = dtp;
 	dpr->dpr_pid = pid;
 
+#if defined(sun)
 	(void) Punsetflags(dpr->dpr_proc, PR_KLC);
 	(void) Psetflags(dpr->dpr_proc, PR_RLC);
+#else
+	(void) proc_clearflags(dpr->dpr_proc, PR_KLC);
+	(void) proc_setflags(dpr->dpr_proc, PR_RLC);
+#endif
 
 	/*
 	 * If we are attempting to grab the process without a monitor
@@ -1072,7 +1189,11 @@ dtrace_proc_create(dtrace_hdl_t *dtp, const char *file, char *const *argv)
 	struct ps_prochandle *P = dt_proc_create(dtp, file, argv);
 
 	if (P != NULL && idp != NULL && idp->di_id == 0)
+#if defined(sun)
 		idp->di_id = Pstatus(P)->pr_pid; /* $target = created pid */
+#else
+		idp->di_id = proc_getpid(P); /* $target = created pid */
+#endif
 
 	return (P);
 }