================
@@ -597,6 +611,18 @@ _LIBUNWIND_EXPORT uintptr_t _Unwind_GetIP(struct
_Unwind_Context *context) {
unw_cursor_t *cursor = (unw_cursor_t *)context;
unw_word_t result;
__unw_get_reg(cursor, UNW_REG_IP, &result);
+
+#if __has_feature(ptrauth_calls)
+ // If we are in an arm64e frame, then the PC should have been signed with the
+ // sp
+ {
+ unw_word_t sp;
+ __unw_get_reg(cursor, UNW_REG_SP, &sp);
+ result = (unw_word_t)ptrauth_auth_data((void *)result,
+ ptrauth_key_return_address, sp);
+ }
+#endif
----------------
ojhunt wrote:
I think we'll need to go through the pr to determine which of the ptrauth_calls
should be ptrauth_returns as our codebase assumes they're always the same
https://github.com/llvm/llvm-project/pull/143230
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