178 dtrace_user_probe(struct regs *rp, caddr_t addr, processorid_t cpuid)  in dtrace_user_probe()  argument
184 	if (USERMODE(rp->r_cs) || (rp->r_ps & PS_VM)) {  in dtrace_user_probe()
197 	if (rp->r_trapno == T_DTRACE_RET) {  in dtrace_user_probe()
229 			rp->r_pc = npc;  in dtrace_user_probe()
240 			(void) (*dtrace_return_probe_ptr)(rp);  in dtrace_user_probe()
242 		rp->r_pc = npc;  in dtrace_user_probe()
244 	} else if (rp->r_trapno == T_BPTFLT) {  in dtrace_user_probe()
258 		    (*dtrace_pid_probe_ptr)(rp) == 0) {  in dtrace_user_probe()
264 		if (dtrace_linear_pc(rp, p, &linearpc) != 0) {  in dtrace_user_probe()
265 			trap(rp, addr, cpuid);  in dtrace_user_probe()
279 		if (rp->r_pc > 0 && fuword8(linearpc - 1, &instr) == 0 &&  in dtrace_user_probe()
281 		    (instr != 3 || (rp->r_pc >= 2 &&  in dtrace_user_probe()
283 			rp->r_pc--;  in dtrace_user_probe()
287 		trap(rp, addr, cpuid);  in dtrace_user_probe()
290 		trap(rp, addr, cpuid);  in dtrace_user_probe()
298 	struct regs *rp = lwptoregs(ttolwp(t));  in dtrace_safe_synchronous_signal()  local
309 	if (rp->r_pc < t->t_dtrace_scrpc ||  in dtrace_safe_synchronous_signal()
310 	    rp->r_pc > t->t_dtrace_astpc + isz) {  in dtrace_safe_synchronous_signal()
312 	} else if (rp->r_pc == t->t_dtrace_scrpc ||  in dtrace_safe_synchronous_signal()
313 	    rp->r_pc == t->t_dtrace_astpc) {  in dtrace_safe_synchronous_signal()
314 		rp->r_pc = t->t_dtrace_pc;  in dtrace_safe_synchronous_signal()
323 	struct regs *rp = lwptoregs(ttolwp(t));  in dtrace_safe_defer_signal()  local
332 	if (rp->r_pc < t->t_dtrace_scrpc ||  in dtrace_safe_defer_signal()
333 	    rp->r_pc > t->t_dtrace_astpc + isz) {  in dtrace_safe_defer_signal()
346 	if (rp->r_pc >= t->t_dtrace_scrpc + isz &&  in dtrace_safe_defer_signal()
347 	    rp->r_pc < t->t_dtrace_astpc) {  in dtrace_safe_defer_signal()
355 		    rp->r_pc == t->t_dtrace_scrpc + isz) {  in dtrace_safe_defer_signal()
358 				rp->r_rax = t->t_dtrace_regv;  in dtrace_safe_defer_signal()
361 				rp->r_rcx = t->t_dtrace_regv;  in dtrace_safe_defer_signal()
364 				rp->r_r8 = t->t_dtrace_regv;  in dtrace_safe_defer_signal()
367 				rp->r_r9 = t->t_dtrace_regv;  in dtrace_safe_defer_signal()
372 		rp->r_pc = t->t_dtrace_npc;  in dtrace_safe_defer_signal()
382 		ASSERT(rp->r_pc < t->t_dtrace_astpc);  in dtrace_safe_defer_signal()
383 		rp->r_pc += t->t_dtrace_astpc - t->t_dtrace_scrpc;  in dtrace_safe_defer_signal()