523 static int convert_variable(Dwarf_Die *vr_die, struct probe_finder *pf)  in convert_variable()  argument
531 	ret = convert_variable_location(vr_die, pf->addr, pf->fb_ops,  in convert_variable()
532 					&pf->sp_die, pf->tvar);  in convert_variable()
537 		       pf->pvar->var, pf->pvar->var);  in convert_variable()
540 	else if (ret == 0 && pf->pvar->field) {  in convert_variable()
541 		ret = convert_variable_fields(vr_die, pf->pvar->var,  in convert_variable()
542 					      pf->pvar->field, &pf->tvar->ref,  in convert_variable()
547 		ret = convert_variable_type(vr_die, pf->tvar, pf->pvar->type);  in convert_variable()
553 static int find_variable(Dwarf_Die *sc_die, struct probe_finder *pf)  in find_variable()  argument
560 	if (!is_c_varname(pf->pvar->var))  in find_variable()
561 		return copy_to_probe_trace_arg(pf->tvar, pf->pvar);  in find_variable()
563 	if (pf->pvar->name)  in find_variable()
564 		pf->tvar->name = strdup(pf->pvar->name);  in find_variable()
566 		ret = synthesize_perf_probe_arg(pf->pvar, buf, 32);  in find_variable()
572 		pf->tvar->name = strdup(buf);  in find_variable()
574 	if (pf->tvar->name == NULL)  in find_variable()
577 	pr_debug("Searching '%s' variable in context.\n", pf->pvar->var);  in find_variable()
579 	if (!die_find_variable_at(sc_die, pf->pvar->var, pf->addr, &vr_die)) {  in find_variable()
581 		if (!die_find_variable_at(&pf->cu_die, pf->pvar->var,  in find_variable()
584 				   pf->pvar->var);  in find_variable()
589 		ret = convert_variable(&vr_die, pf);  in find_variable()
654 static int call_probe_finder(Dwarf_Die *sc_die, struct probe_finder *pf)  in call_probe_finder()  argument
667 		if (!die_find_realfunc(&pf->cu_die, pf->addr, &pf->sp_die)) {  in call_probe_finder()
668 			if (die_find_tailfunc(&pf->cu_die, pf->addr, &pf->sp_die)) {  in call_probe_finder()
670 						dwarf_diename(&pf->sp_die));  in call_probe_finder()
679 		memcpy(&pf->sp_die, sc_die, sizeof(Dwarf_Die));  in call_probe_finder()
682 	dwarf_attr(&pf->sp_die, DW_AT_frame_base, &fb_attr);  in call_probe_finder()
683 	ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1);  in call_probe_finder()
685 		pf->fb_ops = NULL;  in call_probe_finder()
687 	} else if (nops == 1 && pf->fb_ops[0].atom == DW_OP_call_frame_cfa &&  in call_probe_finder()
688 		   pf->cfi != NULL) {  in call_probe_finder()
690 		if (dwarf_cfi_addrframe(pf->cfi, pf->addr, &frame) != 0 ||  in call_probe_finder()
691 		    dwarf_frame_cfa(frame, &pf->fb_ops, &nops) != 0) {  in call_probe_finder()
693 				   (uintmax_t)pf->addr);  in call_probe_finder()
700 	ret = pf->callback(sc_die, pf);  in call_probe_finder()
703 	pf->fb_ops = NULL;  in call_probe_finder()
750 static Dwarf_Die *find_best_scope(struct probe_finder *pf, Dwarf_Die *die_mem)  in find_best_scope()  argument
753 		.function = pf->pev->point.function,  in find_best_scope()
754 		.file = pf->fname,  in find_best_scope()
755 		.line = pf->lno,  in find_best_scope()
761 	cu_walk_functions_at(&pf->cu_die, pf->addr, find_best_scope_cb, &fsp);  in find_best_scope()
769 	struct probe_finder *pf = data;  in probe_point_line_walker()  local
773 	if (lineno != pf->lno || strtailcmp(fname, pf->fname) != 0)  in probe_point_line_walker()
776 	pf->addr = addr;  in probe_point_line_walker()
777 	sc_die = find_best_scope(pf, &die_mem);  in probe_point_line_walker()
783 	ret = call_probe_finder(sc_die, pf);  in probe_point_line_walker()
790 static int find_probe_point_by_line(struct probe_finder *pf)  in find_probe_point_by_line()  argument
792 	return die_walk_lines(&pf->cu_die, probe_point_line_walker, pf);  in find_probe_point_by_line()
838 	struct probe_finder *pf = data;  in probe_point_lazy_walker()  local
842 	if (!intlist__has_entry(pf->lcache, lineno) ||  in probe_point_lazy_walker()
843 	    strtailcmp(fname, pf->fname) != 0)  in probe_point_lazy_walker()
848 	pf->addr = addr;  in probe_point_lazy_walker()
849 	pf->lno = lineno;  in probe_point_lazy_walker()
850 	sc_die = find_best_scope(pf, &die_mem);  in probe_point_lazy_walker()
856 	ret = call_probe_finder(sc_die, pf);  in probe_point_lazy_walker()
866 static int find_probe_point_lazy(Dwarf_Die *sp_die, struct probe_finder *pf)  in find_probe_point_lazy()  argument
871 	if (intlist__empty(pf->lcache)) {  in find_probe_point_lazy()
874 		comp_dir = cu_get_comp_dir(&pf->cu_die);  in find_probe_point_lazy()
875 		ret = get_real_path(pf->fname, comp_dir, &fpath);  in find_probe_point_lazy()
882 		ret = find_lazy_match_lines(pf->lcache, fpath,  in find_probe_point_lazy()
883 					    pf->pev->point.lazy_line);  in find_probe_point_lazy()
889 	return die_walk_lines(sp_die, probe_point_lazy_walker, pf);  in find_probe_point_lazy()
894 	struct probe_finder *pf = data;  in probe_point_inline_cb()  local
895 	struct perf_probe_point *pp = &pf->pev->point;  in probe_point_inline_cb()
900 		ret = find_probe_point_lazy(in_die, pf);  in probe_point_inline_cb()
908 		pf->addr = addr;  in probe_point_inline_cb()
909 		pf->addr += pp->offset;  in probe_point_inline_cb()
911 			 (uintmax_t)pf->addr);  in probe_point_inline_cb()
913 		ret = call_probe_finder(in_die, pf);  in probe_point_inline_cb()
929 	struct probe_finder *pf = param->data;  in probe_point_search_cb()  local
930 	struct perf_probe_point *pp = &pf->pev->point;  in probe_point_search_cb()
942 	pf->fname = dwarf_decl_file(sp_die);  in probe_point_search_cb()
944 		dwarf_decl_line(sp_die, &pf->lno);  in probe_point_search_cb()
945 		pf->lno += pp->line;  in probe_point_search_cb()
946 		param->retval = find_probe_point_by_line(pf);  in probe_point_search_cb()
949 		dwarf_entrypc(sp_die, &pf->addr);  in probe_point_search_cb()
952 			param->retval = find_probe_point_lazy(sp_die, pf);  in probe_point_search_cb()
954 			pf->addr += pp->offset;  in probe_point_search_cb()
956 			param->retval = call_probe_finder(sp_die, pf);  in probe_point_search_cb()
961 					probe_point_inline_cb, (void *)pf);  in probe_point_search_cb()
976 static int find_probe_point_by_func(struct probe_finder *pf)  in find_probe_point_by_func()  argument
978 	struct dwarf_callback_param _param = {.data = (void *)pf,  in find_probe_point_by_func()
980 	dwarf_getfuncs(&pf->cu_die, probe_point_search_cb, &_param, 0);  in find_probe_point_by_func()
1018 				  struct probe_finder *pf)  in debuginfo__find_probes()  argument
1020 	struct perf_probe_point *pp = &pf->pev->point;  in debuginfo__find_probes()
1041 		pf->cfi = dwarf_getcfi_elf(elf);  in debuginfo__find_probes()
1043 		pf->cfi = dwarf_getcfi(dbg->dbg);  in debuginfo__find_probes()
1048 	pf->lcache = intlist__new(NULL);  in debuginfo__find_probes()
1049 	if (!pf->lcache)  in debuginfo__find_probes()
1057 			.cu_die	  = &pf->cu_die,  in debuginfo__find_probes()
1058 			.sp_die	  = &pf->sp_die,  in debuginfo__find_probes()
1062 			.data = pf,  in debuginfo__find_probes()
1068 			ret = probe_point_search_cb(&pf->sp_die, &probe_param);  in debuginfo__find_probes()
1077 		diep = dwarf_offdie(dbg->dbg, off + cuhl, &pf->cu_die);  in debuginfo__find_probes()
1083 			pf->fname = cu_find_realpath(&pf->cu_die, pp->file);  in debuginfo__find_probes()
1085 			pf->fname = NULL;  in debuginfo__find_probes()
1087 		if (!pp->file || pf->fname) {  in debuginfo__find_probes()
1089 				ret = find_probe_point_by_func(pf);  in debuginfo__find_probes()
1091 				ret = find_probe_point_lazy(&pf->cu_die, pf);  in debuginfo__find_probes()
1093 				pf->lno = pp->line;  in debuginfo__find_probes()
1094 				ret = find_probe_point_by_line(pf);  in debuginfo__find_probes()
1103 	intlist__delete(pf->lcache);  in debuginfo__find_probes()
1104 	pf->lcache = NULL;  in debuginfo__find_probes()
1110 	struct probe_finder *pf;  member
1122 	struct probe_finder *pf = vf->pf;  in copy_variables_cb()  local
1128 		if (convert_variable_location(die_mem, vf->pf->addr,  in copy_variables_cb()
1129 					      vf->pf->fb_ops, &pf->sp_die,  in copy_variables_cb()
1141 	if (dwarf_haspc(die_mem, vf->pf->addr))  in copy_variables_cb()
1147 static int expand_probe_args(Dwarf_Die *sc_die, struct probe_finder *pf,  in expand_probe_args()  argument
1153 	struct local_vars_finder vf = {.pf = pf, .args = args, .vars = false,  in expand_probe_args()
1156 	for (i = 0; i < pf->pev->nargs; i++) {  in expand_probe_args()
1158 		if (strcmp(pf->pev->args[i].var, PROBE_ARG_VARS) == 0)  in expand_probe_args()
1160 		else if (strcmp(pf->pev->args[i].var, PROBE_ARG_PARAMS) != 0) {  in expand_probe_args()
1162 			args[n] = pf->pev->args[i];  in expand_probe_args()
1166 		pr_debug("Expanding %s into:", pf->pev->args[i].var);  in expand_probe_args()
1180 static int add_probe_trace_event(Dwarf_Die *sc_die, struct probe_finder *pf)  in add_probe_trace_event()  argument
1183 			container_of(pf, struct trace_event_finder, pf);  in add_probe_trace_event()
1184 	struct perf_probe_point *pp = &pf->pev->point;  in add_probe_trace_event()
1198 	ret = convert_to_trace_point(&pf->sp_die, tf->mod, pf->addr,  in add_probe_trace_event()
1219 	ret = expand_probe_args(sc_die, pf, args);  in add_probe_trace_event()
1232 		pf->pvar = &args[i];  in add_probe_trace_event()
1233 		pf->tvar = &tev->args[i];  in add_probe_trace_event()
1235 		ret = find_variable(sc_die, pf);  in add_probe_trace_event()
1255 			.pf = {.pev = pev, .callback = add_probe_trace_event},  in debuginfo__find_trace_events()
1267 	ret = debuginfo__find_probes(dbg, &tf.pf);  in debuginfo__find_trace_events()
1290 		ret = convert_variable_location(die_mem, af->pf.addr,  in collect_variables_cb()
1291 						af->pf.fb_ops, &af->pf.sp_die,  in collect_variables_cb()
1315 				ret2 = die_get_var_range(&af->pf.sp_die,  in collect_variables_cb()
1328 	if (af->child && dwarf_haspc(die_mem, af->pf.addr))  in collect_variables_cb()
1335 static int add_available_vars(Dwarf_Die *sc_die, struct probe_finder *pf)  in add_available_vars()  argument
1338 			container_of(pf, struct available_var_finder, pf);  in add_available_vars()
1339 	struct perf_probe_point *pp = &pf->pev->point;  in add_available_vars()
1352 	ret = convert_to_trace_point(&pf->sp_die, af->mod, pf->addr,  in add_available_vars()
1372 	die_find_child(&pf->cu_die, collect_variables_cb, (void *)af, &die_mem);  in add_available_vars()
1393 			.pf = {.pev = pev, .callback = add_available_vars},  in debuginfo__find_available_vars_at()
1406 	ret = debuginfo__find_probes(dbg, &af.pf);  in debuginfo__find_available_vars_at()