59 static void callstack_push_syscall(struct process *proc, int sysnum);
60 static void callstack_push_symfunc(struct process *proc, struct breakpoint *bp);
64 void callstack_pop(struct process *proc);
66 static char *shortsignal(struct process *proc, int signum);
67 static char *sysname(struct process *proc, int sysnum);
68 static char *arch_sysname(struct process *proc, int sysnum);
71 call_handler(struct process *proc, Event *event)  in call_handler()  argument
73 	assert(proc != NULL);  in call_handler()
75 	struct event_handler *handler = proc->event_handler;  in call_handler()
91 	      event->proc ? event->proc->pid : -1, event->type);  in handle_event()
97 	if (event->proc != NULL) {  in handle_event()
98 		event = call_handler(event->proc, event);  in handle_event()
105 		if (event->proc != NULL  in handle_event()
106 		    && event->proc->leader != NULL  in handle_event()
107 		    && event->proc != event->proc->leader) {  in handle_event()
108 			event = call_handler(event->proc->leader, event);  in handle_event()
120 		assert(event->proc != NULL);  in handle_event()
122 		      event->proc->pid,  in handle_event()
123 		      shortsignal(event->proc, event->e_un.signum),  in handle_event()
129 		assert(event->proc != NULL);  in handle_event()
131 		      event->proc->pid,  in handle_event()
137 		assert(event->proc != NULL);  in handle_event()
139 		      event->proc->pid,  in handle_event()
140 		      shortsignal(event->proc, event->e_un.signum),  in handle_event()
146 		assert(event->proc != NULL);  in handle_event()
148 		      event->proc->pid,  in handle_event()
149 		      sysname(event->proc, event->e_un.sysnum),  in handle_event()
155 		assert(event->proc != NULL);  in handle_event()
157 		      event->proc->pid,  in handle_event()
158 		      sysname(event->proc, event->e_un.sysnum),  in handle_event()
164 		assert(event->proc != NULL);  in handle_event()
166 		      event->proc->pid,  in handle_event()
167 		      arch_sysname(event->proc, event->e_un.sysnum),  in handle_event()
173 		assert(event->proc != NULL);  in handle_event()
175 		      event->proc->pid,  in handle_event()
176 		      arch_sysname(event->proc, event->e_un.sysnum),  in handle_event()
183 		assert(event->proc != NULL);  in handle_event()
185 		      event->proc->pid, event->e_un.newpid);  in handle_event()
190 		assert(event->proc != NULL);  in handle_event()
192 		      event->proc->pid);  in handle_event()
197 		assert(event->proc != NULL);  in handle_event()
199 		      event->proc->pid, event->e_un.brk_addr);  in handle_event()
271 	debug(DEBUG_FUNCTION, "handle_clone(pid=%d)", event->proc->pid);  in handle_clone()
273 	struct process *proc = malloc(sizeof(*proc));  in handle_clone()  local
275 	if (proc == NULL  in handle_clone()
276 	    || process_clone(proc, event->proc, newpid) < 0) {  in handle_clone()
277 		free(proc);  in handle_clone()
278 		proc = NULL;  in handle_clone()
284 		proc->parent = event->proc;  in handle_clone()
288 		proc->arch_ptr = NULL;  in handle_clone()
294 		if (proc != NULL) {  in handle_clone()
295 			proc->event_handler = NULL;  in handle_clone()
296 			if (event->proc->state == STATE_ATTACHED  in handle_clone()
298 				proc->state = STATE_ATTACHED;  in handle_clone()
300 				proc->state = STATE_IGNORED;  in handle_clone()
305 	} else if (proc != NULL) {  in handle_clone()
306 		proc->state = STATE_BEING_CREATED;  in handle_clone()
310 		continue_process(event->proc->pid);  in handle_clone()
311 	else if (proc != NULL)  in handle_clone()
312 		continue_after_vfork(proc);  in handle_clone()
322 	struct process *proc = pid2proc(event->e_un.newpid);  in handle_new()  local
323 	if (!proc) {  in handle_new()
326 		assert(proc->state == STATE_BEING_CREATED);  in handle_new()
328 			proc->state = STATE_ATTACHED;  in handle_new()
330 			proc->state = STATE_IGNORED;  in handle_new()
332 		continue_process(proc->pid);  in handle_new()
337 shortsignal(struct process *proc, int signum)  in shortsignal()  argument
350 	debug(DEBUG_FUNCTION, "shortsignal(pid=%d, signum=%d)", proc->pid, signum);  in shortsignal()
352 	assert(proc->personality < sizeof signalents / sizeof signalents[0]);  in shortsignal()
353 	if (signum < 0 || signum >= nsignals[proc->personality]) {  in shortsignal()
356 		return signalents[proc->personality][signum];  in shortsignal()
361 sysname(struct process *proc, int sysnum)  in sysname()  argument
376 	debug(DEBUG_FUNCTION, "sysname(pid=%d, sysnum=%d)", proc->pid, sysnum);  in sysname()
378 	assert(proc->personality < sizeof syscallents / sizeof syscallents[0]);  in sysname()
379 	if (sysnum < 0 || sysnum >= nsyscalls[proc->personality]) {  in sysname()
383 		return syscallents[proc->personality][sysnum];  in sysname()
388 arch_sysname(struct process *proc, int sysnum)  in arch_sysname()  argument
396 	debug(DEBUG_FUNCTION, "arch_sysname(pid=%d, sysnum=%d)", proc->pid, sysnum);  in arch_sysname()
413 	debug(DEBUG_FUNCTION, "handle_signal(pid=%d, signum=%d)", event->proc->pid, event->e_un.signum);  in handle_signal()
414 	if (event->proc->state != STATE_IGNORED && !options.no_signals) {  in handle_signal()
415 		output_line(event->proc, "--- %s (%s) ---",  in handle_signal()
416 				shortsignal(event->proc, event->e_un.signum),  in handle_signal()
419 	continue_after_signal(event->proc->pid, event->e_un.signum);  in handle_signal()
466 account_current_callstack(struct process *proc)  in account_current_callstack()  argument
471 	struct timedelta spent[proc->callstack_depth];  in account_current_callstack()
474 	for (i = 0; i < proc->callstack_depth; ++i) {  in account_current_callstack()
475 		struct callstack_element *elem = &proc->callstack[i];  in account_current_callstack()
479 	for (i = 0; i < proc->callstack_depth; ++i) {  in account_current_callstack()
480 		struct callstack_element *elem = &proc->callstack[i];  in account_current_callstack()
483 			const char *name = sysname(proc, elem->c_un.syscall);  in account_current_callstack()
502 	debug(DEBUG_FUNCTION, "handle_exit(pid=%d, status=%d)", event->proc->pid, event->e_un.ret_val);  in handle_exit()
503 	if (event->proc->state != STATE_IGNORED) {  in handle_exit()
504 		output_line(event->proc, "+++ exited (status %d) +++",  in handle_exit()
508 	account_current_callstack(event->proc);  in handle_exit()
509 	remove_process(event->proc);  in handle_exit()
514 …debug(DEBUG_FUNCTION, "handle_exit_signal(pid=%d, signum=%d)", event->proc->pid, event->e_un.signu…  in handle_exit_signal()
515 	if (event->proc->state != STATE_IGNORED) {  in handle_exit_signal()
516 		output_line(event->proc, "+++ killed by %s +++",  in handle_exit_signal()
517 				shortsignal(event->proc, event->e_un.signum));  in handle_exit_signal()
520 	account_current_callstack(event->proc);  in handle_exit_signal()
521 	remove_process(event->proc);  in handle_exit_signal()
525 output_syscall(struct process *proc, const char *name, enum tof tof,  in output_syscall()  argument
535 				output_left(tof, proc, &syscall);  in output_syscall()
539 			output_right(tof, proc, &syscall, spent);  in output_syscall()
547 output_syscall_left(struct process *proc, const char *name)  in output_syscall_left()  argument
549 	output_syscall(proc, name, LT_TOF_SYSCALL, true, NULL);  in output_syscall_left()
553 output_syscall_right(struct process *proc, const char *name,  in output_syscall_right()  argument
556 	output_syscall(proc, name, LT_TOF_SYSCALLR, false, spent);  in output_syscall_right()
562 	debug(DEBUG_FUNCTION, "handle_syscall(pid=%d, sysnum=%d)", event->proc->pid, event->e_un.sysnum);  in handle_syscall()
563 	if (event->proc->state != STATE_IGNORED) {  in handle_syscall()
564 		callstack_push_syscall(event->proc, event->e_un.sysnum);  in handle_syscall()
566 			output_syscall_left(event->proc,  in handle_syscall()
567 					    sysname(event->proc,  in handle_syscall()
570 	continue_after_syscall(event->proc, event->e_un.sysnum, 0);  in handle_syscall()
576 	struct process *proc = event->proc;  in handle_exec()  local
580 	pid_t pid = proc->pid;  in handle_exec()
582 	debug(DEBUG_FUNCTION, "handle_exec(pid=%d)", proc->pid);  in handle_exec()
583 	if (proc->state == STATE_IGNORED) {  in handle_exec()
586 		remove_process(proc);  in handle_exec()
589 	output_line(proc, "--- Called exec() ---");  in handle_exec()
591 	account_current_callstack(proc);  in handle_exec()
593 	if (process_exec(proc) < 0) {  in handle_exec()
599 	continue_after_exec(proc);  in handle_exec()
604 …debug(DEBUG_FUNCTION, "handle_arch_syscall(pid=%d, sysnum=%d)", event->proc->pid, event->e_un.sysn…  in handle_arch_syscall()
605 	if (event->proc->state != STATE_IGNORED) {  in handle_arch_syscall()
606 		callstack_push_syscall(event->proc, 0xf0000 + event->e_un.sysnum);  in handle_arch_syscall()
608 			output_syscall_left(event->proc,  in handle_arch_syscall()
609 					    arch_sysname(event->proc,  in handle_arch_syscall()
613 	continue_process(event->proc->pid);  in handle_arch_syscall()
620 	      event->proc->pid, event->e_un.sysnum);  in handle_x_sysret()
622 	unsigned d = event->proc->callstack_depth;  in handle_x_sysret()
624 	struct callstack_element *elem = &event->proc->callstack[d - 1];  in handle_x_sysret()
627 	if (event->proc->state != STATE_IGNORED) {  in handle_x_sysret()
630 			output_syscall_right(event->proc,  in handle_x_sysret()
631 					     name_cb(event->proc,  in handle_x_sysret()
635 		callstack_pop(event->proc);  in handle_x_sysret()
637 	continue_after_syscall(event->proc, event->e_un.sysnum, 1);  in handle_x_sysret()
653 output_right_tos(struct process *proc)  in output_right_tos()  argument
655 	size_t d = proc->callstack_depth;  in output_right_tos()
657 	struct callstack_element *elem = &proc->callstack[d - 1];  in output_right_tos()
660 	if (proc->state != STATE_IGNORED) {  in output_right_tos()
665 			output_right(LT_TOF_FUNCTIONR, proc, elem->c_un.libfunc,  in output_right_tos()
671 void arch_symbol_ret(struct process *proc, struct library_symbol *libsym)  in arch_symbol_ret()  argument
681 	struct process *leader = event->proc->leader;  in handle_breakpoint()
686 		continue_process(event->proc->pid);  in handle_breakpoint()
691 	      event->proc->pid, brk_addr);  in handle_breakpoint()
694 	for (i = event->proc->callstack_depth - 1; i >= 0; i--) {  in handle_breakpoint()
695 		if (brk_addr == event->proc->callstack[i].return_addr) {  in handle_breakpoint()
696 			for (j = event->proc->callstack_depth - 1; j > i; j--)  in handle_breakpoint()
697 				callstack_pop(event->proc);  in handle_breakpoint()
700 			    event->proc->callstack[i].c_un.libfunc;  in handle_breakpoint()
702 			arch_symbol_ret(event->proc, libsym);  in handle_breakpoint()
703 			output_right_tos(event->proc);  in handle_breakpoint()
704 			callstack_pop(event->proc);  in handle_breakpoint()
712 			while (event->proc->callstack_depth > 0) {  in handle_breakpoint()
714 				size_t d = event->proc->callstack_depth;  in handle_breakpoint()
715 				prev = &event->proc->callstack[d - 1];  in handle_breakpoint()
721 				arch_symbol_ret(event->proc,  in handle_breakpoint()
723 				output_right_tos(event->proc);  in handle_breakpoint()
724 				callstack_pop(event->proc);  in handle_breakpoint()
732 				continue_after_breakpoint(event->proc, sbp);  in handle_breakpoint()
734 				set_instruction_pointer(event->proc, brk_addr);  in handle_breakpoint()
735 				continue_process(event->proc->pid);  in handle_breakpoint()
742 		breakpoint_on_hit(sbp, event->proc);  in handle_breakpoint()
743 	else if (event->proc->state != STATE_IGNORED)  in handle_breakpoint()
744 		output_line(event->proc,  in handle_breakpoint()
751 		if (event->proc->state != STATE_IGNORED  in handle_breakpoint()
753 			event->proc->stack_pointer = get_stack_pointer(event->proc);  in handle_breakpoint()
754 			callstack_push_symfunc(event->proc, sbp);  in handle_breakpoint()
756 				output_left(LT_TOF_FUNCTION, event->proc,  in handle_breakpoint()
760 		breakpoint_on_continue(sbp, event->proc);  in handle_breakpoint()
763 		set_instruction_pointer(event->proc, brk_addr);  in handle_breakpoint()
766 	continue_process(event->proc->pid);  in handle_breakpoint()
770 callstack_push_syscall(struct process *proc, int sysnum)  in callstack_push_syscall()  argument
774 	debug(DEBUG_FUNCTION, "callstack_push_syscall(pid=%d, sysnum=%d)", proc->pid, sysnum);  in callstack_push_syscall()
776 	if (proc->callstack_depth == MAX_CALLDEPTH - 1) {  in callstack_push_syscall()
782 	elem = &proc->callstack[proc->callstack_depth];  in callstack_push_syscall()
788 	proc->callstack_depth++;  in callstack_push_syscall()
796 callstack_push_symfunc(struct process *proc, struct breakpoint *bp)  in callstack_push_symfunc()  argument
801 	      proc->pid, bp->libsym->name);  in callstack_push_symfunc()
803 	if (proc->callstack_depth == MAX_CALLDEPTH - 1) {  in callstack_push_symfunc()
809 	elem = &proc->callstack[proc->callstack_depth++];  in callstack_push_symfunc()
815 	if (breakpoint_get_return_bp(&rbp, bp, proc) == 0  in callstack_push_symfunc()
817 		struct breakpoint *ext_rbp = insert_breakpoint(proc, rbp);  in callstack_push_symfunc()
834 callstack_pop(struct process *proc)  in callstack_pop()  argument
837 	assert(proc->callstack_depth > 0);  in callstack_pop()
839 	debug(DEBUG_FUNCTION, "callstack_pop(pid=%d)", proc->pid);  in callstack_pop()
840 	elem = &proc->callstack[proc->callstack_depth - 1];  in callstack_pop()
843 			= address2bpstruct(proc->leader, elem->return_addr);  in callstack_pop()
845 			breakpoint_on_hit(bp, proc);  in callstack_pop()
846 			delete_breakpoint(proc, bp);  in callstack_pop()
858 	proc->callstack_depth--;  in callstack_pop()