LXR linux/arch/um/include/shared/kern

   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
  25extern int do_signal(void);
  26extern void interrupt_end(void);
  27extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs);
  28
  29extern unsigned long segv(struct faultinfo fi, unsigned long ip,
  30                          int is_user, struct uml_pt_regs *regs);
  31extern int handle_page_fault(unsigned long address, unsigned long ip,
  32                             int is_write, int is_user, int *code_out);
  33
  34extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
  35extern int smp_sigio_handler(void);
  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 int start_uml(void);
  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);
  52extern int get_current_pid(void);
  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
  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
  68
  69#endif
  70