/* Find a variable in a scope DIE */
static int find_variable(Dwarf_Die *sc_die, struct probe_finder *pf)
{
- Dwarf_Die vr_die, *scopes;
+ Dwarf_Die vr_die;
char buf[32], *ptr;
- int ret, nscopes;
+ int ret = 0;
if (!is_c_varname(pf->pvar->var)) {
/* Copy raw parameters */
if (pf->tvar->name == NULL)
return -ENOMEM;
- pr_debug("Searching '%s' variable in context.\n",
- pf->pvar->var);
+ pr_debug("Searching '%s' variable in context.\n", pf->pvar->var);
/* Search child die for local variables and parameters. */
- if (die_find_variable_at(sc_die, pf->pvar->var, pf->addr, &vr_die))
- ret = convert_variable(&vr_die, pf);
- else {
- /* Search upper class */
- nscopes = dwarf_getscopes_die(sc_die, &scopes);
- ret = -ENOENT;
- while (nscopes-- > 1) {
- pr_debug("Searching variables in %s\n",
- dwarf_diename(&scopes[nscopes]));
- /* We should check this scope, so give dummy address */
- if (die_find_variable_at(&scopes[nscopes],
- pf->pvar->var, 0,
- &vr_die)) {
- ret = convert_variable(&vr_die, pf);
- break;
- }
- }
- if (scopes)
- free(scopes);
+ if (!die_find_variable_at(sc_die, pf->pvar->var, pf->addr, &vr_die)) {
+ /* Search again in global variables */
+ if (!die_find_variable_at(&pf->cu_die, pf->pvar->var, 0, &vr_die))
+ ret = -ENOENT;
}
+ if (ret >= 0)
+ ret = convert_variable(&vr_die, pf);
+
if (ret < 0)
pr_warning("Failed to find '%s' in this function.\n",
pf->pvar->var);
return die_walk_lines(sp_die, probe_point_lazy_walker, pf);
}
-/* Callback parameter with return value */
-struct dwarf_callback_param {
- void *data;
- int retval;
-};
-
static int probe_point_inline_cb(Dwarf_Die *in_die, void *data)
{
- struct dwarf_callback_param *param = data;
- struct probe_finder *pf = param->data;
+ struct probe_finder *pf = data;
struct perf_probe_point *pp = &pf->pev->point;
Dwarf_Addr addr;
+ int ret;
if (pp->lazy_line)
- param->retval = find_probe_point_lazy(in_die, pf);
+ ret = find_probe_point_lazy(in_die, pf);
else {
/* Get probe address */
if (dwarf_entrypc(in_die, &addr) != 0) {
pr_warning("Failed to get entry address of %s.\n",
dwarf_diename(in_die));
- param->retval = -ENOENT;
- return DWARF_CB_ABORT;
+ return -ENOENT;
}
pf->addr = addr;
pf->addr += pp->offset;
pr_debug("found inline addr: 0x%jx\n",
(uintmax_t)pf->addr);
- param->retval = call_probe_finder(in_die, pf);
- if (param->retval < 0)
- return DWARF_CB_ABORT;
+ ret = call_probe_finder(in_die, pf);
}
- return DWARF_CB_OK;
+ return ret;
}
+/* Callback parameter with return value for libdw */
+struct dwarf_callback_param {
+ void *data;
+ int retval;
+};
+
/* Search function from function name */
static int probe_point_search_cb(Dwarf_Die *sp_die, void *data)
{
/* TODO: Check the address in this function */
param->retval = call_probe_finder(sp_die, pf);
}
- } else {
- struct dwarf_callback_param _param = {.data = (void *)pf,
- .retval = 0};
+ } else
/* Inlined function: search instances */
- dwarf_func_inline_instances(sp_die, probe_point_inline_cb,
- &_param);
- param->retval = _param.retval;
- }
+ param->retval = die_walk_instances(sp_die,
+ probe_point_inline_cb, (void *)pf);
return DWARF_CB_ABORT; /* Exit; no same symbol in this CU. */
}
struct available_var_finder *af =
container_of(pf, struct available_var_finder, pf);
struct variable_list *vl;
- Dwarf_Die die_mem, *scopes = NULL;
- int ret, nscopes;
+ Dwarf_Die die_mem;
+ int ret;
/* Check number of tevs */
if (af->nvls == af->max_vls) {
goto out;
/* Don't need to search child DIE for externs. */
af->child = false;
- nscopes = dwarf_getscopes_die(sc_die, &scopes);
- while (nscopes-- > 1)
- die_find_child(&scopes[nscopes], collect_variables_cb,
- (void *)af, &die_mem);
- if (scopes)
- free(scopes);
+ die_find_child(&pf->cu_die, collect_variables_cb, (void *)af, &die_mem);
out:
if (strlist__empty(vl->vars)) {
static int line_range_inline_cb(Dwarf_Die *in_die, void *data)
{
- struct dwarf_callback_param *param = data;
-
- param->retval = find_line_range_by_line(in_die, param->data);
+ find_line_range_by_line(in_die, data);
/*
* We have to check all instances of inlined function, because
* some execution paths can be optimized out depends on the
* function argument of instances
*/
- return DWARF_CB_OK;
+ return 0;
}
/* Search function from function name */
pr_debug("New line range: %d to %d\n", lf->lno_s, lf->lno_e);
lr->start = lf->lno_s;
lr->end = lf->lno_e;
- if (dwarf_func_inline(sp_die)) {
- struct dwarf_callback_param _param;
- _param.data = (void *)lf;
- _param.retval = 0;
- dwarf_func_inline_instances(sp_die,
- line_range_inline_cb,
- &_param);
- param->retval = _param.retval;
- } else
+ if (dwarf_func_inline(sp_die))
+ param->retval = die_walk_instances(sp_die,
+ line_range_inline_cb, lf);
+ else
param->retval = find_line_range_by_line(sp_die, lf);
return DWARF_CB_ABORT;
}
git.openpandora.org / pandora-kernel.git / blobdiff