1. 根目录:
2. arch
3. s390
4. kernel
5. entry.h

#ifndef _ENTRY_H
#define _ENTRY_H

#include <linux/types.h>
#include <linux/signal.h>
#include <asm/ptrace.h>
#include <asm/cputime.h>

extern void *restart_stack;
extern unsigned long suspend_zero_pages;

void system_call(void);
void pgm_check_handler(void);
void ext_int_handler(void);
void io_int_handler(void);
void mcck_int_handler(void);
void restart_int_handler(void);
void restart_call_handler(void);
void psw_idle(struct s390_idle_data *, unsigned long);

asmlinkage long do_syscall_trace_enter(struct pt_regs *regs);
asmlinkage void do_syscall_trace_exit(struct pt_regs *regs);

void do_protection_exception(struct pt_regs *regs);
void do_dat_exception(struct pt_regs *regs);
void do_asce_exception(struct pt_regs *regs);

void addressing_exception(struct pt_regs *regs);
void data_exception(struct pt_regs *regs);
void default_trap_handler(struct pt_regs *regs);
void divide_exception(struct pt_regs *regs);
void execute_exception(struct pt_regs *regs);
void hfp_divide_exception(struct pt_regs *regs);
void hfp_overflow_exception(struct pt_regs *regs);
void hfp_significance_exception(struct pt_regs *regs);
void hfp_sqrt_exception(struct pt_regs *regs);
void hfp_underflow_exception(struct pt_regs *regs);
void illegal_op(struct pt_regs *regs);
void operand_exception(struct pt_regs *regs);
void overflow_exception(struct pt_regs *regs);
void privileged_op(struct pt_regs *regs);
void space_switch_exception(struct pt_regs *regs);
void special_op_exception(struct pt_regs *regs);
void specification_exception(struct pt_regs *regs);
void transaction_exception(struct pt_regs *regs);
void translation_exception(struct pt_regs *regs);

void do_per_trap(struct pt_regs *regs);
void syscall_trace(struct pt_regs *regs, int entryexit);
void kernel_stack_overflow(struct pt_regs * regs);
void do_signal(struct pt_regs *regs);
void handle_signal32(unsigned long sig, struct k_sigaction *ka,
		    siginfo_t *info, sigset_t *oldset, struct pt_regs *regs);
void do_notify_resume(struct pt_regs *regs);

struct ext_code;
void do_extint(struct pt_regs *regs, struct ext_code, unsigned int, unsigned long);
void do_restart(void);
void __init startup_init(void);
void die(struct pt_regs *regs, const char *str);

void __init time_init(void);

struct s390_mmap_arg_struct;
struct fadvise64_64_args;
struct old_sigaction;

long sys_mmap2(struct s390_mmap_arg_struct __user  *arg);
long sys_s390_ipc(uint call, int first, unsigned long second,
	     unsigned long third, void __user *ptr);
long sys_s390_personality(unsigned int personality);
long sys_s390_fadvise64(int fd, u32 offset_high, u32 offset_low,
		    size_t len, int advice);
long sys_s390_fadvise64_64(struct fadvise64_64_args __user *args);
long sys_s390_fallocate(int fd, int mode, loff_t offset, u32 len_high,
			u32 len_low);
long sys_sigreturn(void);
long sys_rt_sigreturn(void);
long sys32_sigreturn(void);
long sys32_rt_sigreturn(void);

#endif /* _ENTRY_H */