summaryrefslogtreecommitdiff
path: root/tools/perf/util/symbol-elf.c
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/util/symbol-elf.c')
-rw-r--r--tools/perf/util/symbol-elf.c56
1 files changed, 55 insertions, 1 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 1e23a5bfb044..06fcd1bf98b6 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -11,6 +11,27 @@
#include <symbol/kallsyms.h>
#include "debug.h"
+#ifdef HAVE_CPLUS_DEMANGLE_SUPPORT
+extern char *cplus_demangle(const char *, int);
+
+static inline char *bfd_demangle(void __maybe_unused *v, const char *c, int i)
+{
+ return cplus_demangle(c, i);
+}
+#else
+#ifdef NO_DEMANGLE
+static inline char *bfd_demangle(void __maybe_unused *v,
+ const char __maybe_unused *c,
+ int __maybe_unused i)
+{
+ return NULL;
+}
+#else
+#define PACKAGE 'perf'
+#include <bfd.h>
+#endif
+#endif
+
#ifndef HAVE_ELF_GETPHDRNUM_SUPPORT
static int elf_getphdrnum(Elf *elf, size_t *dst)
{
@@ -546,6 +567,35 @@ static int dso__swap_init(struct dso *dso, unsigned char eidata)
return 0;
}
+static int decompress_kmodule(struct dso *dso, const char *name,
+ enum dso_binary_type type)
+{
+ int fd;
+ const char *ext = strrchr(name, '.');
+ char tmpbuf[] = "/tmp/perf-kmod-XXXXXX";
+
+ if ((type != DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP &&
+ type != DSO_BINARY_TYPE__GUEST_KMODULE_COMP) ||
+ type != dso->symtab_type)
+ return -1;
+
+ if (!ext || !is_supported_compression(ext + 1))
+ return -1;
+
+ fd = mkstemp(tmpbuf);
+ if (fd < 0)
+ return -1;
+
+ if (!decompress_to_file(ext + 1, name, fd)) {
+ close(fd);
+ fd = -1;
+ }
+
+ unlink(tmpbuf);
+
+ return fd;
+}
+
bool symsrc__possibly_runtime(struct symsrc *ss)
{
return ss->dynsym || ss->opdsec;
@@ -571,7 +621,11 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
Elf *elf;
int fd;
- fd = open(name, O_RDONLY);
+ if (dso__needs_decompress(dso))
+ fd = decompress_kmodule(dso, name, type);
+ else
+ fd = open(name, O_RDONLY);
+
if (fd < 0)
return -1;