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
12 struct siginfo;
13
14 extern int uml_exitcode;
15
16 extern int kmalloc_ok;
17
18 #define UML_ROUND_UP(addr) \
19 ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK)
20
21 extern unsigned long alloc_stack(int order, int atomic);
22 extern void free_stack(unsigned long stack, int order);
23
24 struct pt_regs;
25 extern void do_signal(struct pt_regs *regs);
26 extern void interrupt_end(void);
27 extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs);
28
29 extern unsigned long segv(struct faultinfo fi, unsigned long ip,
30 int is_user, struct uml_pt_regs *regs);
31 extern int handle_page_fault(unsigned long address, unsigned long ip,
32 int is_write, int is_user, int *code_out);
33
34 extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
35 extern void initial_thread_cb(void (*proc)(void *), void *arg);
36
37 extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
38
39 extern void uml_pm_wake(void);
40
41 extern int start_uml(void);
42 extern void paging_init(void);
43 extern int parse_iomem(char *str, int *add);
44
45 extern void uml_cleanup(void);
46 extern void do_uml_exitcalls(void);
47
48 /*
49 * Are we disallowed to sleep? Used to choose between GFP_KERNEL and
50 * GFP_ATOMIC.
51 */
52 extern int __uml_cant_sleep(void);
53 extern int get_current_pid(void);
54 extern int copy_from_user_proc(void *to, void *from, int size);
55 extern char *uml_strdup(const char *string);
56
57 extern unsigned long to_irq_stack(unsigned long *mask_out);
58 extern unsigned long from_irq_stack(int nested);
59
60 extern int singlestepping(void);
61
62 extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
63 extern void bus_handler(int sig, struct siginfo *si, struct uml_pt_regs *regs);
64 extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
65 extern void fatal_sigsegv(void) __attribute__ ((noreturn));
66
67 void um_idle_sleep(void);
68
69 void kasan_map_memory(void *start, size_t len);
70
71 #endif
72
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