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Diffstat (limited to 'tools/perf/util/probe-finder.c')
-rw-r--r--tools/perf/util/probe-finder.c20
1 files changed, 8 insertions, 12 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index e77dc886760..c171a243d05 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -169,7 +169,7 @@ static const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname)
{
Dwarf_Files *files;
size_t nfiles, i;
- const char *src;
+ const char *src = NULL;
int ret;
if (!fname)
@@ -333,8 +333,8 @@ static void show_location(Dwarf_Op *op, struct probe_finder *pf)
die("%u exceeds max register number.", regn);
if (deref)
- ret = snprintf(pf->buf, pf->len, " %s=+%ju(%s)",
- pf->var, (uintmax_t)offs, regs);
+ ret = snprintf(pf->buf, pf->len, " %s=%+jd(%s)",
+ pf->var, (intmax_t)offs, regs);
else
ret = snprintf(pf->buf, pf->len, " %s=%s", pf->var, regs);
DIE_IF(ret < 0);
@@ -352,8 +352,7 @@ static void show_variable(Dwarf_Die *vr_die, struct probe_finder *pf)
if (dwarf_attr(vr_die, DW_AT_location, &attr) == NULL)
goto error;
/* TODO: handle more than 1 exprs */
- ret = dwarf_getlocation_addr(&attr, (pf->addr - pf->cu_base),
- &expr, &nexpr, 1);
+ ret = dwarf_getlocation_addr(&attr, pf->addr, &expr, &nexpr, 1);
if (ret <= 0 || nexpr == 0)
goto error;
@@ -437,8 +436,7 @@ static void show_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
/* Get the frame base attribute/ops */
dwarf_attr(sp_die, DW_AT_frame_base, &fb_attr);
- ret = dwarf_getlocation_addr(&fb_attr, (pf->addr - pf->cu_base),
- &pf->fb_ops, &nops, 1);
+ ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1);
if (ret <= 0 || nops == 0)
pf->fb_ops = NULL;
@@ -455,6 +453,9 @@ static void show_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf)
/* *pf->fb_ops will be cached in libdw. Don't free it. */
pf->fb_ops = NULL;
+ if (pp->found == MAX_PROBES)
+ die("Too many( > %d) probe point found.\n", MAX_PROBES);
+
pp->probes[pp->found] = strdup(tmp);
pp->found++;
}
@@ -641,7 +642,6 @@ static void find_probe_point_by_func(struct probe_finder *pf)
int find_probe_point(int fd, struct probe_point *pp)
{
struct probe_finder pf = {.pp = pp};
- int ret;
Dwarf_Off off, noff;
size_t cuhl;
Dwarf_Die *diep;
@@ -668,10 +668,6 @@ int find_probe_point(int fd, struct probe_point *pp)
pf.fname = NULL;
if (!pp->file || pf.fname) {
- /* Save CU base address (for frame_base) */
- ret = dwarf_lowpc(&pf.cu_die, &pf.cu_base);
- if (ret != 0)
- pf.cu_base = 0;
if (pp->function)
find_probe_point_by_func(&pf);
else if (pp->lazy_line)