1 files changed, 33 insertions, 0 deletions
diff --git a/linux-user/aarch64/target_signal.h b/linux-user/aarch64/target_signal.h
new file mode 100644
index 0000000000..d413dfc85c
--- /dev/null
+++ b/linux-user/aarch64/target_signal.h
@@ -0,0 +1,33 @@
+#ifndef TARGET_SIGNAL_H
+#define TARGET_SIGNAL_H
+
+#include "cpu.h"
+
+/* this struct defines a stack used during syscall handling */
+
+typedef struct target_sigaltstack {
+	abi_ulong ss_sp;
+	abi_long ss_flags;
+	abi_ulong ss_size;
+} target_stack_t;
+
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK	1
+#define TARGET_SS_DISABLE	2
+
+#define TARGET_MINSIGSTKSZ	2048
+#define TARGET_SIGSTKSZ		8192
+
+static inline abi_ulong get_sp_from_cpustate(CPUARMState *state)
+{
+#ifdef TARGET_AARCH64
+   return state->xregs[31];
+#else
+   return state->regs[13];
+#endif
+}
+
+#endif /* TARGET_SIGNAL_H */