diff --git a/linux-user/x86_64/target_signal.h b/linux-user/x86_64/target_signal.h
index eb4a0bb12c..f93a8d62b9 100644
--- a/linux-user/x86_64/target_signal.h
+++ b/linux-user/x86_64/target_signal.h
@@ -21,4 +21,9 @@ typedef struct target_sigaltstack {
 #define TARGET_MINSIGSTKSZ	2048
 #define TARGET_SIGSTKSZ		8192
 
+static inline target_ulong get_sp_from_cpustate(CPUX86State *state)
+{
+    return state->regs[R_ESP];
+}
+
 #endif /* TARGET_SIGNAL_H */