Add comment about instruction sequence

hstk30-hw · hstk30-hw · commit 3768e4338f95 · 2025-11-10T23:43:40.000+08:00
diff --git a/libunwind/src/UnwindCursor.hpp b/libunwind/src/UnwindCursor.hpp
@@ -58,6 +58,13 @@
 #include "RWMutex.hpp"
 #include "Unwind-EHABI.h"
 
+
+/*
+ * The linux sigreturn restorer stub will always have the form:
+ *
+ *  d2801168        movz    x8, #0x8b
+ *  d4000001        svc     #0x0
+ */
 #if defined(__AARCH64EB__)
 #define MOVZ_X8_8B 0x681180d2
 #define SVC_0 0x010000d4
