Allow native_bridge to intercept __get_thread()->stack_top
Bug: 158584334
Test: bionic-unit-tests --gtest_filter=android_unsafe_frame_pointer_chase*
Change-Id: Ib58372991027846eb35c7e393de321910fa92997
diff --git a/libc/bionic/android_unsafe_frame_pointer_chase.cpp b/libc/bionic/android_unsafe_frame_pointer_chase.cpp
index e25867b..b3b1942 100644
--- a/libc/bionic/android_unsafe_frame_pointer_chase.cpp
+++ b/libc/bionic/android_unsafe_frame_pointer_chase.cpp
@@ -28,8 +28,14 @@
#include "platform/bionic/android_unsafe_frame_pointer_chase.h"
-#include "pthread_internal.h"
#include "platform/bionic/mte.h"
+#include "private/bionic_defs.h"
+#include "pthread_internal.h"
+
+__BIONIC_WEAK_FOR_NATIVE_BRIDGE
+extern "C" __LIBC_HIDDEN__ uintptr_t __get_thread_stack_top() {
+ return __get_thread()->stack_top;
+}
/*
* Implement fast stack unwinding for stack frames with frame pointers. Stores at most num_entries
@@ -56,7 +62,7 @@
};
auto begin = reinterpret_cast<uintptr_t>(__builtin_frame_address(0));
- uintptr_t end = __get_thread()->stack_top;
+ auto end = __get_thread_stack_top();
stack_t ss;
if (sigaltstack(nullptr, &ss) == 0 && (ss.ss_flags & SS_ONSTACK)) {