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-rw-r--r--arch/um/include/kern_util.h120
1 files changed, 37 insertions, 83 deletions
diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h
index 74ce8e5370a6..3c341222d252 100644
--- a/arch/um/include/kern_util.h
+++ b/arch/um/include/kern_util.h
@@ -9,107 +9,61 @@
9#include "sysdep/ptrace.h" 9#include "sysdep/ptrace.h"
10#include "sysdep/faultinfo.h" 10#include "sysdep/faultinfo.h"
11 11
12typedef void (*kern_hndl)(int, struct uml_pt_regs *); 12extern int uml_exitcode;
13
14struct kern_handlers {
15 kern_hndl relay_signal;
16 kern_hndl winch;
17 kern_hndl bus_handler;
18 kern_hndl page_fault;
19 kern_hndl sigio_handler;
20 kern_hndl timer_handler;
21};
22
23extern const struct kern_handlers handlinfo_kern;
24 13
25extern int ncpus; 14extern int ncpus;
26extern char *gdb_init;
27extern int kmalloc_ok; 15extern int kmalloc_ok;
28extern int jail;
29extern int nsyscalls;
30 16
31#define UML_ROUND_DOWN(addr) ((void *)(((unsigned long) addr) & PAGE_MASK))
32#define UML_ROUND_UP(addr) \ 17#define UML_ROUND_UP(addr) \
33 UML_ROUND_DOWN(((unsigned long) addr) + PAGE_SIZE - 1) 18 ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK)
34 19
35extern int kernel_fork(unsigned long flags, int (*fn)(void *), void * arg);
36extern int kernel_thread_proc(void *data);
37extern void syscall_segv(int sig);
38extern int current_pid(void);
39extern unsigned long alloc_stack(int order, int atomic); 20extern unsigned long alloc_stack(int order, int atomic);
21extern void free_stack(unsigned long stack, int order);
22
40extern int do_signal(void); 23extern int do_signal(void);
41extern int is_stack_fault(unsigned long sp); 24extern void copy_sc(struct uml_pt_regs *regs, void *from);
25extern void interrupt_end(void);
26extern void relay_signal(int sig, struct uml_pt_regs *regs);
27
42extern unsigned long segv(struct faultinfo fi, unsigned long ip, 28extern unsigned long segv(struct faultinfo fi, unsigned long ip,
43 int is_user, struct uml_pt_regs *regs); 29 int is_user, struct uml_pt_regs *regs);
44extern int handle_page_fault(unsigned long address, unsigned long ip, 30extern int handle_page_fault(unsigned long address, unsigned long ip,
45 int is_write, int is_user, int *code_out); 31 int is_write, int is_user, int *code_out);
46extern void syscall_ready(void); 32
47extern void set_tracing(void *t, int tracing);
48extern int is_tracing(void *task);
49extern int segv_syscall(void);
50extern void kern_finish_exec(void *task, int new_pid, unsigned long stack);
51extern unsigned long page_mask(void);
52extern int need_finish_fork(void);
53extern void free_stack(unsigned long stack, int order);
54extern void add_input_request(int op, void (*proc)(int), void *arg);
55extern char *current_cmd(void);
56extern void timer_handler(int sig, struct uml_pt_regs *regs);
57extern int set_signals(int enable);
58extern int pid_to_processor_id(int pid);
59extern void deliver_signals(void *t);
60extern int next_trap_index(int max);
61extern void default_idle(void);
62extern void finish_fork(void);
63extern void paging_init(void);
64extern void init_flush_vm(void);
65extern void *syscall_sp(void *t);
66extern void syscall_trace(struct uml_pt_regs *regs, int entryexit);
67extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs); 33extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
68extern void interrupt_end(void);
69extern void initial_thread_cb(void (*proc)(void *), void *arg);
70extern int debugger_signal(int status, int pid);
71extern void debugger_parent_signal(int status, int pid);
72extern void child_signal(int pid, int status);
73extern int init_ptrace_proxy(int idle_pid, int startup, int stop);
74extern int init_parent_proxy(int pid);
75extern int singlestepping(void *t);
76extern void check_stack_overflow(void *ptr);
77extern void relay_signal(int sig, struct uml_pt_regs *regs);
78extern int user_context(unsigned long sp);
79extern void timer_irq(struct uml_pt_regs *regs);
80extern void do_uml_exitcalls(void);
81extern int attach_debugger(int idle_pid, int pid, int stop);
82extern int config_gdb(char *str);
83extern int remove_gdb(void);
84extern char *uml_strdup(char *string);
85extern void unprotect_kernel_mem(void);
86extern void protect_kernel_mem(void);
87extern void uml_cleanup(void);
88extern void lock_signalled_task(void *t);
89extern void IPI_handler(int cpu);
90extern int jail_setup(char *line, int *add);
91extern void *get_init_task(void);
92extern int clear_user_proc(void *buf, int size);
93extern int copy_to_user_proc(void *to, void *from, int size);
94extern int copy_from_user_proc(void *to, void *from, int size);
95extern int strlen_user_proc(char *str);
96extern long execute_syscall(void *r);
97extern int smp_sigio_handler(void); 34extern int smp_sigio_handler(void);
98extern void *get_current(void); 35extern void initial_thread_cb(void (*proc)(void *), void *arg);
99extern struct task_struct *get_task(int pid, int require);
100extern void machine_halt(void);
101extern int is_syscall(unsigned long addr); 36extern int is_syscall(unsigned long addr);
37extern void timer_handler(int sig, struct uml_pt_regs *regs);
102 38
103extern void free_irq(unsigned int, void *); 39extern void timer_handler(int sig, struct uml_pt_regs *regs);
104extern int cpu(void);
105 40
106extern void time_init_kern(void); 41extern int start_uml(void);
42extern void paging_init(void);
107 43
108/* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */ 44extern void uml_cleanup(void);
45extern void do_uml_exitcalls(void);
46
47/*
48 * Are we disallowed to sleep? Used to choose between GFP_KERNEL and
49 * GFP_ATOMIC.
50 */
109extern int __cant_sleep(void); 51extern int __cant_sleep(void);
110extern void sigio_handler(int sig, struct uml_pt_regs *regs); 52extern void *get_current(void);
111extern void copy_sc(struct uml_pt_regs *regs, void *from); 53extern int copy_from_user_proc(void *to, void *from, int size);
54extern int cpu(void);
55extern char *uml_strdup(const char *string);
56
112extern unsigned long to_irq_stack(unsigned long *mask_out); 57extern unsigned long to_irq_stack(unsigned long *mask_out);
113unsigned long from_irq_stack(int nested); 58extern unsigned long from_irq_stack(int nested);
114extern int start_uml(void); 59
60extern void syscall_trace(struct uml_pt_regs *regs, int entryexit);
61extern int singlestepping(void *t);
62
63extern void segv_handler(int sig, struct uml_pt_regs *regs);
64extern void bus_handler(int sig, struct uml_pt_regs *regs);
65extern void winch(int sig, struct uml_pt_regs *regs);
66extern void fatal_sigsegv(void) __attribute__ ((noreturn));
67
68
115#endif 69#endif
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