1 files changed, 70 insertions, 0 deletions
diff --git a/arch/um/include/shared/kern_util.h b/arch/um/include/shared/kern_util.h
new file mode 100644
index 000000000..d8b8b4f07
--- /dev/null
+++ b/arch/um/include/shared/kern_util.h
@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ */
+
+#ifndef __KERN_UTIL_H__
+#define __KERN_UTIL_H__
+
+#include <sysdep/ptrace.h>
+#include <sysdep/faultinfo.h>
+
+struct siginfo;
+
+extern int uml_exitcode;
+
+extern int ncpus;
+extern int kmalloc_ok;
+
+#define UML_ROUND_UP(addr) \
+	((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK)
+
+extern unsigned long alloc_stack(int order, int atomic);
+extern void free_stack(unsigned long stack, int order);
+
+struct pt_regs;
+extern void do_signal(struct pt_regs *regs);
+extern void interrupt_end(void);
+extern void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs);
+
+extern unsigned long segv(struct faultinfo fi, unsigned long ip,
+			  int is_user, struct uml_pt_regs *regs);
+extern int handle_page_fault(unsigned long address, unsigned long ip,
+			     int is_write, int is_user, int *code_out);
+
+extern unsigned int do_IRQ(int irq, struct uml_pt_regs *regs);
+extern void initial_thread_cb(void (*proc)(void *), void *arg);
+extern int is_syscall(unsigned long addr);
+
+extern void timer_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
+
+extern void uml_pm_wake(void);
+
+extern int start_uml(void);
+extern void paging_init(void);
+
+extern void uml_cleanup(void);
+extern void do_uml_exitcalls(void);
+
+/*
+ * Are we disallowed to sleep? Used to choose between GFP_KERNEL and
+ * GFP_ATOMIC.
+ */
+extern int __cant_sleep(void);
+extern int get_current_pid(void);
+extern int copy_from_user_proc(void *to, void *from, int size);
+extern char *uml_strdup(const char *string);
+
+extern unsigned long to_irq_stack(unsigned long *mask_out);
+extern unsigned long from_irq_stack(int nested);
+
+extern int singlestepping(void *t);
+
+extern void segv_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
+extern void bus_handler(int sig, struct siginfo *si, struct uml_pt_regs *regs);
+extern void winch(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs);
+extern void fatal_sigsegv(void) __attribute__ ((noreturn));
+
+void um_idle_sleep(void);
+
+#endif