#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	4096#define TARGET_SIGSTKSZ		16384static inline abi_ulong get_sp_from_cpustate(CPUAlphaState *state){    return state->ir[IR_SP];}#endif /* TARGET_SIGNAL_H */