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 #define UML_ROUND_UP(addr) \ 19 ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK) 20 21 extern unsigned long alloc_stack(int order, int atomic); 22 extern void free_stack(unsigned long stack, int order); 23 24 struct pt_regs; 25 extern void do_signal(struct pt_regs *regs); 26 extern void interrupt_end(void); 27 extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs, 28 void *mc); 29 30 extern unsigned long segv(struct faultinfo fi, unsigned long ip, 31 int is_user, struct uml_pt_regs *regs, 32 void *mc); 33 extern int handle_page_fault(unsigned long address, unsigned long ip, 34 int is_write, int is_user, int *code_out); 35 36 extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs); 37 extern void initial_thread_cb(void (*proc)(void *), void *arg); 38 39 extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); 40 41 extern void uml_pm_wake(void); 42 43 extern int start_uml(void); 44 extern void paging_init(void); 45 extern int parse_iomem(char *str, int *add); 46 47 extern void uml_cleanup(void); 48 extern void do_uml_exitcalls(void); 49 50 /* 51 * Are we disallowed to sleep? Used to choose between GFP_KERNEL and 52 * GFP_ATOMIC. 53 */ 54 extern int __uml_cant_sleep(void); 55 extern int get_current_pid(void); 56 extern int copy_from_user_proc(void *to, void *from, int size); 57 extern char *uml_strdup(const char *string); 58 59 extern unsigned long to_irq_stack(unsigned long *mask_out); 60 extern unsigned long from_irq_stack(int nested); 61 62 extern int singlestepping(void); 63 64 extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs, 65 void *mc); 66 extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs, 67 void *mc); 68 extern void fatal_sigsegv(void) __attribute__ ((noreturn)); 69 70 void um_idle_sleep(void); 71 72 void kasan_map_memory(void *start, size_t len); 73 74 #endif 75