| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 ncpus; |
| 17 | extern int kmalloc_ok; |
| 18 | |
| 19 | #define UML_ROUND_UP(addr) \ |
| 20 | ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK) |
| 21 | |
| 22 | extern unsigned long alloc_stack(int order, int atomic); |
| 23 | extern void free_stack(unsigned long stack, int order); |
| 24 | |
| 25 | struct pt_regs; |
| 26 | extern void do_signal(struct pt_regs *regs); |
| 27 | extern void interrupt_end(void); |
| 28 | extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs); |
| 29 | |
| 30 | extern unsigned long segv(struct faultinfo fi, unsigned long ip, |
| 31 | int is_user, struct uml_pt_regs *regs); |
| 32 | extern int handle_page_fault(unsigned long address, unsigned long ip, |
| 33 | int is_write, int is_user, int *code_out); |
| 34 | |
| 35 | extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs); |
| 36 | extern int smp_sigio_handler(void); |
| 37 | extern void initial_thread_cb(void (*proc)(void *), void *arg); |
| 38 | extern int is_syscall(unsigned long addr); |
| 39 | |
| 40 | extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); |
| 41 | |
| 42 | extern int start_uml(void); |
| 43 | extern void paging_init(void); |
| 44 | |
| 45 | extern void uml_cleanup(void); |
| 46 | extern void do_uml_exitcalls(void); |
| 47 | |
| 48 | /* |
| 49 | * Are we disallowed to sleep? Used to choose between GFP_KERNEL and |
| 50 | * GFP_ATOMIC. |
| 51 | */ |
| 52 | extern int __uml_cant_sleep(void); |
| 53 | extern int get_current_pid(void); |
| 54 | extern int copy_from_user_proc(void *to, void *from, int size); |
| 55 | extern int cpu(void); |
| 56 | extern char *uml_strdup(const char *string); |
| 57 | |
| 58 | extern unsigned long to_irq_stack(unsigned long *mask_out); |
| 59 | extern unsigned long from_irq_stack(int nested); |
| 60 | |
| 61 | extern void syscall_trace(struct uml_pt_regs *regs, int entryexit); |
| 62 | extern int singlestepping(void *t); |
| 63 | |
| 64 | extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); |
| 65 | extern void bus_handler(int sig, struct siginfo *si, struct uml_pt_regs *regs); |
| 66 | extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); |
| 67 | extern void fatal_sigsegv(void) __attribute__ ((noreturn)); |
| 68 | |
| 69 | |
| 70 | #endif |