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

 
 1/*
 2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 3 * Licensed under the GPL
 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 ncpus;
17extern int kmalloc_ok;
18
19#define UML_ROUND_UP(addr) \
20	((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK)
21
22extern unsigned long alloc_stack(int order, int atomic);
23extern void free_stack(unsigned long stack, int order);
24
25struct pt_regs;
26extern void do_signal(struct pt_regs *regs);
27extern void interrupt_end(void);
28extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs);
29
30extern unsigned long segv(struct faultinfo fi, unsigned long ip,
31			  int is_user, struct uml_pt_regs *regs);
32extern int handle_page_fault(unsigned long address, unsigned long ip,
33			     int is_write, int is_user, int *code_out);
34
35extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
36extern int smp_sigio_handler(void);
37extern void initial_thread_cb(void (*proc)(void *), void *arg);
38extern int is_syscall(unsigned long addr);
39
40extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
41
 
 
42extern int start_uml(void);
43extern void paging_init(void);
44
45extern void uml_cleanup(void);
46extern void do_uml_exitcalls(void);
47
48/*
49 * Are we disallowed to sleep? Used to choose between GFP_KERNEL and
50 * GFP_ATOMIC.
51 */
52extern int __cant_sleep(void);
53extern int get_current_pid(void);
54extern int copy_from_user_proc(void *to, void *from, int size);
55extern int cpu(void);
56extern char *uml_strdup(const char *string);
57
58extern unsigned long to_irq_stack(unsigned long *mask_out);
59extern unsigned long from_irq_stack(int nested);
60
61extern void syscall_trace(struct uml_pt_regs *regs, int entryexit);
62extern int singlestepping(void *t);
63
64extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
65extern void bus_handler(int sig, struct siginfo *si, struct uml_pt_regs *regs);
66extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
67extern void fatal_sigsegv(void) __attribute__ ((noreturn));
68
 
69
70#endif