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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ENTRY_H
3#define _ENTRY_H
4
5#define PGM_FLAG_GUEST_FAULT 1
6#define SYSCALL_FLAG_PER_TRAP 1
7
8#ifndef __ASSEMBLER__
9
10#include <linux/percpu.h>
11#include <linux/types.h>
12#include <linux/signal.h>
13#include <asm/extable.h>
14#include <asm/lowcore.h>
15#include <asm/ptrace.h>
16#include <asm/idle.h>
17
18extern void *restart_stack;
19
20void system_call(void);
21void pgm_check_handler(void);
22void ext_int_handler(void);
23void io_int_handler(void);
24void mcck_int_handler(void);
25void restart_int_handler(void);
26void early_pgm_check_handler(void);
27
28struct task_struct *__switch_to_asm(struct task_struct *prev, struct task_struct *next);
29void __ret_from_fork(struct task_struct *prev, struct pt_regs *regs);
30void __do_pgm_check(struct pt_regs *regs, unsigned long flags);
31void __do_syscall(struct pt_regs *regs, unsigned long flags);
32void __do_early_pgm_check(struct pt_regs *regs);
33
34void do_protection_exception(struct pt_regs *regs);
35void do_dat_exception(struct pt_regs *regs);
36void do_secure_storage_access(struct pt_regs *regs);
37void do_non_secure_storage_access(struct pt_regs *regs);
38void do_secure_storage_violation(struct pt_regs *regs);
39void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str);
40void kernel_stack_invalid(struct pt_regs *regs);
41void handle_signal32(struct ksignal *ksig, sigset_t *oldset,
42 struct pt_regs *regs);
43
44void do_io_irq(struct pt_regs *regs);
45void do_ext_irq(struct pt_regs *regs);
46void do_restart(void *arg);
47void __init startup_init(void);
48void die(struct pt_regs *regs, const char *str);
49int setup_profiling_timer(unsigned int multiplier);
50
51struct s390_mmap_arg_struct;
52struct fadvise64_64_args;
53struct old_sigaction;
54
55long sys_rt_sigreturn(void);
56long sys_sigreturn(void);
57
58long sys_s390_personality(unsigned int personality);
59long sys_s390_runtime_instr(int command, int signum);
60long sys_s390_guarded_storage(int command, struct gs_cb __user *);
61long sys_s390_pci_mmio_write(unsigned long, const void __user *, size_t);
62long sys_s390_pci_mmio_read(unsigned long, void __user *, size_t);
63long sys_s390_sthyi(unsigned long function_code, void __user *buffer, u64 __user *return_code, unsigned long flags);
64
65unsigned long stack_alloc(void);
66void stack_free(unsigned long stack);
67
68extern int stack_invalid_lowcore_used;
69extern struct lowcore stack_invalid_lowcore;
70
71extern char kprobes_insn_page[];
72
73extern char _samode31[], _eamode31[];
74extern char _stext_amode31[], _etext_amode31[];
75extern struct exception_table_entry _start_amode31_ex_table[];
76extern struct exception_table_entry _stop_amode31_ex_table[];
77
78#define __amode31_data __section(".amode31.data")
79#define __amode31_ref __section(".amode31.refs")
80extern long _start_amode31_refs[], _end_amode31_refs[];
81
82#endif /* __ASSEMBLER__ */
83#endif /* _ENTRY_H */