arch/um/include/kern_util.h

   1 /*
   2  * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #ifndef __KERN_UTIL_H__
   7 #define __KERN_UTIL_H__
   8
   9 #include "linux/threads.h"
  10 #include "sysdep/ptrace.h"
  11 #include "sysdep/faultinfo.h"
  12
  13 extern int ncpus;
  14 extern char *linux_prog;
  15 extern char *gdb_init;
  16 extern int kmalloc_ok;
  17 extern int timer_irq_inited;
  18 extern int jail;
  19 extern int nsyscalls;
  20
  21 extern struct task_struct *idle_threads[NR_CPUS];
  22
  23 #define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK))
  24 #define UML_ROUND_UP(addr) \
  25         UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1)
  26
  27 extern int kernel_fork(unsigned long flags, int (*fn)(void *), void * arg);
  28 extern unsigned long stack_sp(unsigned long page);
  29 extern int kernel_thread_proc(void *data);
  30 extern void syscall_segv(int sig);
  31 extern int current_pid(void);
  32 extern unsigned long alloc_stack(int order, int atomic);
  33 extern int do_signal(void);
  34 extern int is_stack_fault(unsigned long sp);
  35 extern unsigned long segv(struct faultinfo fi, unsigned long ip,
  36                           int is_user, void *sc);
  37 extern int handle_page_fault(unsigned long address, unsigned long ip,
  38                              int is_write, int is_user, int *code_out);
  39 extern void syscall_ready(void);
  40 extern void set_tracing(void *t, int tracing);
  41 extern int is_tracing(void *task);
  42 extern int segv_syscall(void);
  43 extern void kern_finish_exec(void *task, int new_pid, unsigned long stack);
  44 extern int page_size(void);
  45 extern unsigned long page_mask(void);
  46 extern int need_finish_fork(void);
  47 extern void free_stack(unsigned long stack, int order);
  48 extern void add_input_request(int op, void (*proc)(int), void *arg);
  49 extern char *current_cmd(void);
  50 extern void timer_handler(int sig, union uml_pt_regs *regs);
  51 extern int set_signals(int enable);
  52 extern void force_sigbus(void);
  53 extern int pid_to_processor_id(int pid);
  54 extern void block_signals(void);
  55 extern void unblock_signals(void);
  56 extern void deliver_signals(void *t);
  57 extern int next_syscall_index(int max);
  58 extern int next_trap_index(int max);
  59 extern void default_idle(void);
  60 extern void finish_fork(void);
  61 extern void paging_init(void);
  62 extern void init_flush_vm(void);
  63 extern void *syscall_sp(void *t);
  64 extern void syscall_trace(union uml_pt_regs *regs, int entryexit);
  65 extern int hz(void);
  66 extern void uml_idle_timer(void);
  67 extern unsigned int do_IRQ(int irq, union uml_pt_regs *regs);
  68 extern int external_pid(void *t);
  69 extern void boot_timer_handler(int sig);
  70 extern void interrupt_end(void);
  71 extern void initial_thread_cb(void (*proc)(void *), void *arg);
  72 extern int debugger_signal(int status, int pid);
  73 extern void debugger_parent_signal(int status, int pid);
  74 extern void child_signal(int pid, int status);
  75 extern int init_ptrace_proxy(int idle_pid, int startup, int stop);
  76 extern int init_parent_proxy(int pid);
  77 extern int singlestepping(void *t);
  78 extern void check_stack_overflow(void *ptr);
  79 extern void relay_signal(int sig, union uml_pt_regs *regs);
  80 extern void not_implemented(void);
  81 extern int user_context(unsigned long sp);
  82 extern void timer_irq(union uml_pt_regs *regs);
  83 extern void unprotect_stack(unsigned long stack);
  84 extern void do_uml_exitcalls(void);
  85 extern int attach_debugger(int idle_pid, int pid, int stop);
  86 extern void bad_segv(struct faultinfo fi, unsigned long ip);
  87 extern int config_gdb(char *str);
  88 extern int remove_gdb(void);
  89 extern char *uml_strdup(char *string);
  90 extern void unprotect_kernel_mem(void);
  91 extern void protect_kernel_mem(void);
  92 extern void uml_cleanup(void);
  93 extern void set_current(void *t);
  94 extern void lock_signalled_task(void *t);
  95 extern void IPI_handler(int cpu);
  96 extern int jail_setup(char *line, int *add);
  97 extern void *get_init_task(void);
  98 extern int clear_user_proc(void *buf, int size);
  99 extern int copy_to_user_proc(void *to, void *from, int size);
 100 extern int copy_from_user_proc(void *to, void *from, int size);
 101 extern int strlen_user_proc(char *str);
 102 extern void bus_handler(int sig, union uml_pt_regs *regs);
 103 extern void winch(int sig, union uml_pt_regs *regs);
 104 extern long execute_syscall(void *r);
 105 extern int smp_sigio_handler(void);
 106 extern void *get_current(void);
 107 extern struct task_struct *get_task(int pid, int require);
 108 extern void machine_halt(void);
 109 extern int is_syscall(unsigned long addr);
 110 extern void arch_switch(void);
 111 extern void free_irq(unsigned int, void *);
 112 extern int um_in_interrupt(void);
 113 extern int cpu(void);
 114
 115 #endif
 116
 117 /*
 118  * Overrides for Emacs so that we follow Linus's tabbing style.
 119  * Emacs will notice this stuff at the end of the file and automatically
 120  * adjust the settings for this buffer only.  This must remain at the end
 121  * of the file.
 122  * ---------------------------------------------------------------------------
 123  * Local variables:
 124  * c-file-style: "linux"
 125  * End:
 126  */