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-rw-r--r--tools/perf/util/symbol-elf.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index b2ed9cc52265..63882a4db5c7 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -31,6 +31,13 @@
#include <bfd.h>
#endif
+#if defined(HAVE_LIBBFD_SUPPORT) || defined(HAVE_CPLUS_DEMANGLE_SUPPORT)
+#ifndef DMGL_PARAMS
+#define DMGL_PARAMS (1 << 0) /* Include function args */
+#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
+#endif
+#endif
+
#ifndef EM_AARCH64
#define EM_AARCH64 183 /* ARM 64 bit */
#endif
@@ -271,6 +278,26 @@ static bool want_demangle(bool is_kernel_sym)
return is_kernel_sym ? symbol_conf.demangle_kernel : symbol_conf.demangle;
}
+/*
+ * Demangle C++ function signature, typically replaced by demangle-cxx.cpp
+ * version.
+ */
+__weak char *cxx_demangle_sym(const char *str __maybe_unused, bool params __maybe_unused,
+ bool modifiers __maybe_unused)
+{
+#ifdef HAVE_LIBBFD_SUPPORT
+ int flags = (params ? DMGL_PARAMS : 0) | (modifiers ? DMGL_ANSI : 0);
+
+ return bfd_demangle(NULL, str, flags);
+#elif defined(HAVE_CPLUS_DEMANGLE_SUPPORT)
+ int flags = (params ? DMGL_PARAMS : 0) | (modifiers ? DMGL_ANSI : 0);
+
+ return cplus_demangle(str, flags);
+#else
+ return NULL;
+#endif
+}
+
static char *demangle_sym(struct dso *dso, int kmodule, const char *elf_name)
{
char *demangled = NULL;