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 12 struct siginfo; 13 14 extern int uml_exitcode; 15 16 extern int kmalloc_ok; 17 18 extern unsigned long alloc_stack(int order, int atomic); 19 extern void free_stack(unsigned long stack, int order); 20 21 struct pt_regs; 22 extern void do_signal(struct pt_regs *regs); 23 extern void interrupt_end(void); 24 extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs, 25 void *mc); 26 27 extern unsigned long segv(struct faultinfo fi, unsigned long ip, 28 int is_user, struct uml_pt_regs *regs, 29 void *mc); 30 extern int handle_page_fault(unsigned long address, unsigned long ip, 31 int is_write, int is_user, int *code_out); 32 33 extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs); 34 extern void initial_thread_cb(void (*proc)(void *), void *arg); 35 36 extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); 37 38 extern void uml_pm_wake(void); 39 40 extern int start_uml(void); 41 42 extern void uml_cleanup(void); 43 extern void do_uml_exitcalls(void); 44 45 /* 46 * Are we disallowed to sleep? Used to choose between GFP_KERNEL and 47 * GFP_ATOMIC. 48 */ 49 extern int __uml_cant_sleep(void); 50 extern int get_current_pid(void); 51 extern int copy_from_user_proc(void *to, void *from, int size); 52 extern char *uml_strdup(const char *string); 53 int uml_need_resched(void); 54 55 extern unsigned long to_irq_stack(unsigned long *mask_out); 56 extern unsigned long from_irq_stack(int nested); 57 58 extern int singlestepping(void); 59 60 extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs, 61 void *mc); 62 extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs, 63 void *mc); 64 extern void fatal_sigsegv(void) __attribute__ ((noreturn)); 65 66 void um_idle_sleep(void); 67 68 void kasan_map_memory(void *start, size_t len); 69 70 #endif 71