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

   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 int cpu(void);
  57extern char *uml_strdup(const char *string);
  58
  59extern unsigned long to_irq_stack(unsigned long *mask_out);
  60extern unsigned long from_irq_stack(int nested);
  61
  62extern void syscall_trace(struct uml_pt_regs *regs, int entryexit);
  63extern int singlestepping(void *t);
  64
  65extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
  66extern void bus_handler(int sig, struct siginfo *si, struct uml_pt_regs *regs);
  67extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
  68extern void fatal_sigsegv(void) __attribute__ ((noreturn));
  69
  70void um_idle_sleep(void);
  71
  72#endif
  73