projects/linux·blob master · refs

70 lines · 1.9 KiB

1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
4 */
5
6#ifndef __KERN_UTIL_H__
7#define __KERN_UTIL_H__
8
9#include <sysdep/ptrace.h>
10#include <sysdep/faultinfo.h>
11
12struct siginfo;
13
14extern int uml_exitcode;
15
16extern int kmalloc_ok;
17
18extern unsigned long alloc_stack(int order, int atomic);
19extern void free_stack(unsigned long stack, int order);
20
21struct pt_regs;
22extern void do_signal(struct pt_regs *regs);
23extern void interrupt_end(void);
24extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs,
25 void *mc);
26
27extern unsigned long segv(struct faultinfo fi, unsigned long ip,
28 int is_user, struct uml_pt_regs *regs,
29 void *mc);
30extern int handle_page_fault(unsigned long address, unsigned long ip,
31 int is_write, int is_user, int *code_out);
32
33extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
34extern void initial_thread_cb(void (*proc)(void *), void *arg);
35
36extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
37
38extern void uml_pm_wake(void);
39
40extern int start_uml(void);
41
42extern void uml_cleanup(void);
43extern void do_uml_exitcalls(void);
44
45/*
46 * Are we disallowed to sleep? Used to choose between GFP_KERNEL and
47 * GFP_ATOMIC.
48 */
49extern int __uml_cant_sleep(void);
50extern int get_current_pid(void);
51extern int copy_from_user_proc(void *to, void *from, int size);
52extern char *uml_strdup(const char *string);
53int uml_need_resched(void);
54
55extern unsigned long to_irq_stack(unsigned long *mask_out);
56extern unsigned long from_irq_stack(int nested);
57
58extern int singlestepping(void);
59
60extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs,
61 void *mc);
62extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs,
63 void *mc);
64extern void fatal_sigsegv(void) __attribute__ ((noreturn));
65
66void um_idle_sleep(void);
67
68void kasan_map_memory(void *start, size_t len);
69
70#endif