sys/arm64/include/stack.h

   1 /*-
   2  * Copyright (c) 2001 Jake Burkholder.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #ifndef _MACHINE_STACK_H_
  28 #define _MACHINE_STACK_H_
  29
  30 #define INKERNEL(va) \
  31         ((va) >= VM_MIN_KERNEL_ADDRESS && (va) <= VM_MAX_KERNEL_ADDRESS)
  32
  33 struct unwind_state {
  34         uintptr_t fp;
  35         uintptr_t pc;
  36 };
  37
  38 bool unwind_frame(struct thread *, struct unwind_state *);
  39
  40 #ifdef _SYS_PROC_H_
  41
  42 #include <machine/pcb.h>
  43
  44 #define GET_STACK_USAGE(total, used) do {                               \
  45         struct thread *td = curthread;                                  \
  46         (total) = td->td_kstack_pages * PAGE_SIZE - sizeof(struct pcb); \
  47         (used) = td->td_kstack + (total) - (vm_offset_t)&td;            \
  48 } while (0)
  49
  50 static __inline bool
  51 kstack_contains(struct thread *td, vm_offset_t va, size_t len)
  52 {
  53         return (va >= td->td_kstack && va + len >= va &&
  54             va + len <= td->td_kstack + td->td_kstack_pages * PAGE_SIZE -
  55             sizeof(struct pcb));
  56 }
  57 #endif  /* _SYS_PROC_H_ */
  58
  59 #endif /* !_MACHINE_STACK_H_ */