static int probe_point_lazy_walker(const char *fname, int lineno,
Dwarf_Addr addr, void *data)
{
struct probe_finder *pf = data;
Dwarf_Die *sc_die, die_mem;
int ret;
if (!line_list__has_line(&pf->lcache, lineno) ||
strtailcmp(fname, pf->fname) != 0)
return 0;
pr_debug("Probe line found: line:%d addr:0x%llx\n",
lineno, (unsigned long long)addr);
pf->addr = addr;
pf->lno = lineno;
sc_die = find_best_scope(pf, &die_mem);
if (!sc_die) {
pr_warning("Failed to find scope of probe point.\n");
return -ENOENT;
}
ret = call_probe_finder(sc_die, pf);
return ret < 0 ? ret : 0;
}
static int probe_point_lazy_walker(const char *fname, int lineno,
Dwarf_Addr addr, void *data)
{
struct probe_finder *pf = data;
int ret;
if (!line_list__has_line(&pf->lcache, lineno) ||
strtailcmp(fname, pf->fname) != 0)
return 0;
pr_debug("Probe line found: line:%d addr:0x%llx\n",
lineno, (unsigned long long)addr);
pf->addr = addr;
ret = call_probe_finder(NULL, pf);
/*
* Continue if no error, because the lazy pattern will match
* to other lines
*/
return ret < 0 ? ret : 0;
}
/* Find probe points from lazy pattern */
static int find_probe_point_lazy(Dwarf_Die *sp_die, struct probe_finder *pf)
{
Dwarf_Lines *lines;
Dwarf_Line *line;
size_t nlines, i;
Dwarf_Addr addr;
Dwarf_Die die_mem;
int lineno;
int ret = 0;
if (list_empty(&pf->lcache)) {
/* Matching lazy line pattern */
ret = find_lazy_match_lines(&pf->lcache, pf->fname,
pf->pev->point.lazy_line);
if (ret == 0) {
pr_debug("No matched lines found in %s.\n", pf->fname);
return 0;
} else if (ret < 0)
return ret;
}
if (dwarf_getsrclines(&pf->cu_die, &lines, &nlines) != 0) {
pr_warning("No source lines found in this CU.\n");
return -ENOENT;
}
for (i = 0; i < nlines && ret >= 0; i++) {
line = dwarf_onesrcline(lines, i);
if (dwarf_lineno(line, &lineno) != 0 ||
!line_list__has_line(&pf->lcache, lineno))
continue;
/* TODO: Get fileno from line, but how? */
if (strtailcmp(dwarf_linesrc(line, NULL, NULL), pf->fname) != 0)
continue;
if (dwarf_lineaddr(line, &addr) != 0) {
pr_debug("Failed to get the address of line %d.\n",
lineno);
continue;
}
if (sp_die) {
/* Address filtering 1: does sp_die include addr? */
if (!dwarf_haspc(sp_die, addr))
continue;
/* Address filtering 2: No child include addr? */
if (die_find_inlinefunc(sp_die, addr, &die_mem))
continue;
}
pr_debug("Probe line found: line[%d]:%d addr:0x%llx\n",
(int)i, lineno, (unsigned long long)addr);
pf->addr = addr;
ret = convert_probe_point(sp_die, pf);
/* Continuing, because target line might be inlined. */
}
/* TODO: deallocate lines, but how? */
return ret;
}
