| /* |
| * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) |
| * Licensed under the GPL |
| */ |
| |
| #ifndef __KERN_UTIL_H__ |
| #define __KERN_UTIL_H__ |
| |
| #include "linux/threads.h" |
| #include "sysdep/ptrace.h" |
| #include "sysdep/faultinfo.h" |
| |
| typedef void (*kern_hndl)(int, union uml_pt_regs *); |
| |
| struct kern_handlers { |
| kern_hndl relay_signal; |
| kern_hndl winch; |
| kern_hndl bus_handler; |
| kern_hndl page_fault; |
| kern_hndl sigio_handler; |
| kern_hndl timer_handler; |
| }; |
| |
| extern struct kern_handlers handlinfo_kern; |
| |
| extern int ncpus; |
| extern char *linux_prog; |
| extern char *gdb_init; |
| extern int kmalloc_ok; |
| extern int timer_irq_inited; |
| extern int jail; |
| extern int nsyscalls; |
| |
| #define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK)) |
| #define UML_ROUND_UP(addr) \ |
| UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1) |
| |
| extern int kernel_fork(unsigned long flags, int (*fn)(void *), void * arg); |
| extern unsigned long stack_sp(unsigned long page); |
| extern int kernel_thread_proc(void *data); |
| extern void syscall_segv(int sig); |
| extern int current_pid(void); |
| extern unsigned long alloc_stack(int order, int atomic); |
| extern int do_signal(void); |
| extern int is_stack_fault(unsigned long sp); |
| extern unsigned long segv(struct faultinfo fi, unsigned long ip, |
| int is_user, void *sc); |
| extern int handle_page_fault(unsigned long address, unsigned long ip, |
| int is_write, int is_user, int *code_out); |
| extern void syscall_ready(void); |
| extern void set_tracing(void *t, int tracing); |
| extern int is_tracing(void *task); |
| extern int segv_syscall(void); |
| extern void kern_finish_exec(void *task, int new_pid, unsigned long stack); |
| extern int page_size(void); |
| extern unsigned long page_mask(void); |
| extern int need_finish_fork(void); |
| extern void free_stack(unsigned long stack, int order); |
| extern void add_input_request(int op, void (*proc)(int), void *arg); |
| extern char *current_cmd(void); |
| extern void timer_handler(int sig, union uml_pt_regs *regs); |
| extern int set_signals(int enable); |
| extern void force_sigbus(void); |
| extern int pid_to_processor_id(int pid); |
| extern void deliver_signals(void *t); |
| extern int next_syscall_index(int max); |
| extern int next_trap_index(int max); |
| extern void default_idle(void); |
| extern void finish_fork(void); |
| extern void paging_init(void); |
| extern void init_flush_vm(void); |
| extern void *syscall_sp(void *t); |
| extern void syscall_trace(union uml_pt_regs *regs, int entryexit); |
| extern int hz(void); |
| extern void uml_idle_timer(void); |
| extern unsigned int do_IRQ(int irq, union uml_pt_regs *regs); |
| extern int external_pid(void *t); |
| extern void interrupt_end(void); |
| extern void initial_thread_cb(void (*proc)(void *), void *arg); |
| extern int debugger_signal(int status, int pid); |
| extern void debugger_parent_signal(int status, int pid); |
| extern void child_signal(int pid, int status); |
| extern int init_ptrace_proxy(int idle_pid, int startup, int stop); |
| extern int init_parent_proxy(int pid); |
| extern int singlestepping(void *t); |
| extern void check_stack_overflow(void *ptr); |
| extern void relay_signal(int sig, union uml_pt_regs *regs); |
| extern void not_implemented(void); |
| extern int user_context(unsigned long sp); |
| extern void timer_irq(union uml_pt_regs *regs); |
| extern void unprotect_stack(unsigned long stack); |
| extern void do_uml_exitcalls(void); |
| extern int attach_debugger(int idle_pid, int pid, int stop); |
| extern void bad_segv(struct faultinfo fi, unsigned long ip); |
| extern int config_gdb(char *str); |
| extern int remove_gdb(void); |
| extern char *uml_strdup(char *string); |
| extern void unprotect_kernel_mem(void); |
| extern void protect_kernel_mem(void); |
| extern void uml_cleanup(void); |
| extern void set_current(void *t); |
| extern void lock_signalled_task(void *t); |
| extern void IPI_handler(int cpu); |
| extern int jail_setup(char *line, int *add); |
| extern void *get_init_task(void); |
| extern int clear_user_proc(void *buf, int size); |
| extern int copy_to_user_proc(void *to, void *from, int size); |
| extern int copy_from_user_proc(void *to, void *from, int size); |
| extern int strlen_user_proc(char *str); |
| extern void bus_handler(int sig, union uml_pt_regs *regs); |
| extern void winch(int sig, union uml_pt_regs *regs); |
| extern long execute_syscall(void *r); |
| extern int smp_sigio_handler(void); |
| extern void *get_current(void); |
| extern struct task_struct *get_task(int pid, int require); |
| extern void machine_halt(void); |
| extern int is_syscall(unsigned long addr); |
| |
| extern void free_irq(unsigned int, void *); |
| extern int cpu(void); |
| |
| extern void time_init_kern(void); |
| |
| /* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */ |
| extern int __cant_sleep(void); |
| extern void segv_handler(int sig, union uml_pt_regs *regs); |
| extern void sigio_handler(int sig, union uml_pt_regs *regs); |
| |
| #endif |