kern_util.h 4.2 KB

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  1. /*
  2. * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
  3. * Licensed under the GPL
  4. */
  5. #ifndef __KERN_UTIL_H__
  6. #define __KERN_UTIL_H__
  7. #include "sysdep/ptrace.h"
  8. #include "sysdep/faultinfo.h"
  9. typedef void (*kern_hndl)(int, union uml_pt_regs *);
  10. struct kern_handlers {
  11. kern_hndl relay_signal;
  12. kern_hndl winch;
  13. kern_hndl bus_handler;
  14. kern_hndl page_fault;
  15. kern_hndl sigio_handler;
  16. kern_hndl timer_handler;
  17. };
  18. extern const struct kern_handlers handlinfo_kern;
  19. extern int ncpus;
  20. extern char *linux_prog;
  21. extern char *gdb_init;
  22. extern int kmalloc_ok;
  23. extern int jail;
  24. extern int nsyscalls;
  25. #define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK))
  26. #define UML_ROUND_UP(addr) \
  27. UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1)
  28. extern int kernel_fork(unsigned long flags, int (*fn)(void *), void * arg);
  29. extern unsigned long stack_sp(unsigned long page);
  30. extern int kernel_thread_proc(void *data);
  31. extern void syscall_segv(int sig);
  32. extern int current_pid(void);
  33. extern unsigned long alloc_stack(int order, int atomic);
  34. extern int do_signal(void);
  35. extern int is_stack_fault(unsigned long sp);
  36. extern unsigned long segv(struct faultinfo fi, unsigned long ip,
  37. int is_user, void *sc);
  38. extern int handle_page_fault(unsigned long address, unsigned long ip,
  39. int is_write, int is_user, int *code_out);
  40. extern void syscall_ready(void);
  41. extern void set_tracing(void *t, int tracing);
  42. extern int is_tracing(void *task);
  43. extern int segv_syscall(void);
  44. extern void kern_finish_exec(void *task, int new_pid, unsigned long stack);
  45. extern int page_size(void);
  46. extern unsigned long page_mask(void);
  47. extern int need_finish_fork(void);
  48. extern void free_stack(unsigned long stack, int order);
  49. extern void add_input_request(int op, void (*proc)(int), void *arg);
  50. extern char *current_cmd(void);
  51. extern void timer_handler(int sig, union uml_pt_regs *regs);
  52. extern int set_signals(int enable);
  53. extern void force_sigbus(void);
  54. extern int pid_to_processor_id(int pid);
  55. extern void deliver_signals(void *t);
  56. extern int next_trap_index(int max);
  57. extern void default_idle(void);
  58. extern void finish_fork(void);
  59. extern void paging_init(void);
  60. extern void init_flush_vm(void);
  61. extern void *syscall_sp(void *t);
  62. extern void syscall_trace(union uml_pt_regs *regs, int entryexit);
  63. extern int hz(void);
  64. extern unsigned int do_IRQ(int irq, union uml_pt_regs *regs);
  65. extern int external_pid(void *t);
  66. extern void interrupt_end(void);
  67. extern void initial_thread_cb(void (*proc)(void *), void *arg);
  68. extern int debugger_signal(int status, int pid);
  69. extern void debugger_parent_signal(int status, int pid);
  70. extern void child_signal(int pid, int status);
  71. extern int init_ptrace_proxy(int idle_pid, int startup, int stop);
  72. extern int init_parent_proxy(int pid);
  73. extern int singlestepping(void *t);
  74. extern void check_stack_overflow(void *ptr);
  75. extern void relay_signal(int sig, union uml_pt_regs *regs);
  76. extern void not_implemented(void);
  77. extern int user_context(unsigned long sp);
  78. extern void timer_irq(union uml_pt_regs *regs);
  79. extern void unprotect_stack(unsigned long stack);
  80. extern void do_uml_exitcalls(void);
  81. extern int attach_debugger(int idle_pid, int pid, int stop);
  82. extern int config_gdb(char *str);
  83. extern int remove_gdb(void);
  84. extern char *uml_strdup(char *string);
  85. extern void unprotect_kernel_mem(void);
  86. extern void protect_kernel_mem(void);
  87. extern void uml_cleanup(void);
  88. extern void set_current(void *t);
  89. extern void lock_signalled_task(void *t);
  90. extern void IPI_handler(int cpu);
  91. extern int jail_setup(char *line, int *add);
  92. extern void *get_init_task(void);
  93. extern int clear_user_proc(void *buf, int size);
  94. extern int copy_to_user_proc(void *to, void *from, int size);
  95. extern int copy_from_user_proc(void *to, void *from, int size);
  96. extern int strlen_user_proc(char *str);
  97. extern long execute_syscall(void *r);
  98. extern int smp_sigio_handler(void);
  99. extern void *get_current(void);
  100. extern struct task_struct *get_task(int pid, int require);
  101. extern void machine_halt(void);
  102. extern int is_syscall(unsigned long addr);
  103. extern void free_irq(unsigned int, void *);
  104. extern int cpu(void);
  105. extern void time_init_kern(void);
  106. /* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */
  107. extern int __cant_sleep(void);
  108. extern void sigio_handler(int sig, union uml_pt_regs *regs);
  109. #endif