+/* Get the value of the CFA as saved in CONTEXT. */
+
+_Unwind_Word
+_Unwind_GetCFA (struct _Unwind_Context *context __attribute__((unused)))
+{
+ /* ??? Ideally __builtin_setjmp places the CFA in the jmpbuf. */
+
+#ifndef DONT_USE_BUILTIN_SETJMP
+ /* This is a crude imitation of the CFA: the saved stack pointer.
+ This is roughly the CFA of the frame before CONTEXT. When using the
+ DWARF-2 unwinder _Unwind_GetCFA returns the CFA of the frame described
+ by CONTEXT instead; but for DWARF-2 the cleanups associated with
+ CONTEXT have already been run, and for SJLJ they have not yet been. */
+ if (context->fc != NULL)
+ return (_Unwind_Word) context->fc->jbuf[2];
+#endif
+
+ /* Otherwise we're out of luck for now. */
+ return (_Unwind_Word) 0;
+}
+