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gerrit-public.fairphone.software / kernel / msm-4.9 / 37185b33240870719b6b5913a46e6a441f1ae96f / . / arch / um / include / shared / kern_util.h
blob: 83a91f9763302a5fca9b1516fbc958f05adfd9e9 [file] [log] [blame]
Gennady Sharapovea2ba7d2006-01-08 01:01:31 -0800[diff] [blame]1/*
Jeff Dikeba180fd2007-10-16 01:27:00 -0700[diff] [blame]2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3 * Licensed under the GPL
4 */
5
6#ifndef __KERN_UTIL_H__
7#define __KERN_UTIL_H__
8
Al Viro37185b32012-10-08 03:27:32 +0100[diff] [blame^]9#include <sysdep/ptrace.h>
10#include <sysdep/faultinfo.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]11
Martin Pärteld3c1cfc2012-08-02 00:49:17 +0200[diff] [blame]12struct siginfo;
13
Jeff Dike0983a882008-02-04 22:31:08 -0800[diff] [blame]14extern int uml_exitcode;
15
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]16extern int ncpus;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]17extern int kmalloc_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]18
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]19#define UML_ROUND_UP(addr) \
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]20 ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]21
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]22extern unsigned long alloc_stack(int order, int atomic);
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]23extern void free_stack(unsigned long stack, int order);
24
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]25extern int do_signal(void);
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]26extern void interrupt_end(void);
Martin Pärteld3c1cfc2012-08-02 00:49:17 +0200[diff] [blame]27extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs);
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]28
Bodo Stroesserc5784552005-05-05 16:15:31 -0700[diff] [blame]29extern unsigned long segv(struct faultinfo fi, unsigned long ip,
Jeff Dike77bf4402007-10-16 01:26:58 -0700[diff] [blame]30 int is_user, struct uml_pt_regs *regs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]31extern int handle_page_fault(unsigned long address, unsigned long ip,
32 int is_write, int is_user, int *code_out);
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]33
Jeff Dike77bf4402007-10-16 01:26:58 -0700[diff] [blame]34extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]35extern int smp_sigio_handler(void);
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]36extern void initial_thread_cb(void (*proc)(void *), void *arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]37extern int is_syscall(unsigned long addr);
Paolo 'Blaisorblade' Giarrusso972410b2006-03-31 02:30:21 -0800[diff] [blame]38
Martin Pärteld3c1cfc2012-08-02 00:49:17 +0200[diff] [blame]39extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
Paolo 'Blaisorblade' Giarrussob6316292006-01-18 17:42:58 -0800[diff] [blame]40
Jeff Dike77bf4402007-10-16 01:26:58 -0700[diff] [blame]41extern int start_uml(void);
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]42extern void paging_init(void);
43
44extern void uml_cleanup(void);
45extern void do_uml_exitcalls(void);
46
47/*
48 * Are we disallowed to sleep? Used to choose between GFP_KERNEL and
49 * GFP_ATOMIC.
50 */
51extern int __cant_sleep(void);
Al Viroc2220b22012-01-30 16:30:48 -0500[diff] [blame]52extern int get_current_pid(void);
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]53extern int copy_from_user_proc(void *to, void *from, int size);
54extern int cpu(void);
55extern char *uml_strdup(const char *string);
56
57extern unsigned long to_irq_stack(unsigned long *mask_out);
58extern unsigned long from_irq_stack(int nested);
59
60extern void syscall_trace(struct uml_pt_regs *regs, int entryexit);
61extern int singlestepping(void *t);
62
Martin Pärteld3c1cfc2012-08-02 00:49:17 +0200[diff] [blame]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);
Jeff Dike3e6f2ac2008-02-04 22:30:58 -0800[diff] [blame]66extern void fatal_sigsegv(void) __attribute__ ((noreturn));
Jeff Dikeedea1382008-02-04 22:30:46 -0800[diff] [blame]67
68
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]69#endif