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