1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ENTRY_H
3 #define _ENTRY_H
4
5 #include <linux/percpu.h>
6 #include <linux/types.h>
7 #include <linux/signal.h>
8 #include <asm/extable.h>
9 #include <asm/ptrace.h>
10 #include <asm/idle.h>
11
12 extern void *restart_stack;
13
14 void system_call(void);
15 void pgm_check_handler(void);
16 void ext_int_handler(void);
17 void io_int_handler(void);
18 void mcck_int_handler(void);
19 void restart_int_handler(void);
20 void early_pgm_check_handler(void);
21
22 struct task_struct *__switch_to_asm(struct task_struct *prev, struct task_struct *next);
23 void __ret_from_fork(struct task_struct *prev, struct pt_regs *regs);
24 void __do_pgm_check(struct pt_regs *regs);
25 void __do_syscall(struct pt_regs *regs, int per_trap);
26 void __do_early_pgm_check(struct pt_regs *regs);
27
28 void do_protection_exception(struct pt_regs *regs);
29 void do_dat_exception(struct pt_regs *regs);
30 void do_secure_storage_access(struct pt_regs *regs);
31 void do_non_secure_storage_access(struct pt_regs *regs);
32 void do_secure_storage_violation(struct pt_regs *regs);
33 void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str);
34 void kernel_stack_overflow(struct pt_regs * regs);
35 void handle_signal32(struct ksignal *ksig, sigset_t *oldset,
36 struct pt_regs *regs);
37
38 void do_io_irq(struct pt_regs *regs);
39 void do_ext_irq(struct pt_regs *regs);
40 void do_restart(void *arg);
41 void __init startup_init(void);
42 void die(struct pt_regs *regs, const char *str);
43 int setup_profiling_timer(unsigned int multiplier);
44 unsigned long prepare_ftrace_return(unsigned long parent, unsigned long sp, unsigned long ip);
45
46 struct s390_mmap_arg_struct;
47 struct fadvise64_64_args;
48 struct old_sigaction;
49
50 long sys_rt_sigreturn(void);
51 long sys_sigreturn(void);
52
53 long sys_s390_personality(unsigned int personality);
54 long sys_s390_runtime_instr(int command, int signum);
55 long sys_s390_guarded_storage(int command, struct gs_cb __user *);
56 long sys_s390_pci_mmio_write(unsigned long, const void __user *, size_t);
57 long sys_s390_pci_mmio_read(unsigned long, void __user *, size_t);
58 long sys_s390_sthyi(unsigned long function_code, void __user *buffer, u64 __user *return_code, unsigned long flags);
59
60 DECLARE_PER_CPU(u64, mt_cycles[8]);
61
62 unsigned long stack_alloc(void);
63 void stack_free(unsigned long stack);
64
65 extern char kprobes_insn_page[];
66
67 extern char _samode31[], _eamode31[];
68 extern char _stext_amode31[], _etext_amode31[];
69 extern struct exception_table_entry _start_amode31_ex_table[];
70 extern struct exception_table_entry _stop_amode31_ex_table[];
71
72 #define __amode31_data __section(".amode31.data")
73 #define __amode31_ref __section(".amode31.refs")
74 extern long _start_amode31_refs[], _end_amode31_refs[];
75
76 #endif /* _ENTRY_H */
77
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