| 1 | /*- |
| 2 | * Copyright (c) 2016 Ruslan Bukin <br@bsdpad.com> |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Portions of this software were developed by SRI International and the |
| 6 | * University of Cambridge Computer Laboratory under DARPA/AFRL contract |
| 7 | * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. |
| 8 | * |
| 9 | * Portions of this software were developed by the University of Cambridge |
| 10 | * Computer Laboratory as part of the CTSRD Project, with support from the |
| 11 | * UK Higher Education Innovation Fund (HEIF). |
| 12 | * |
| 13 | * Redistribution and use in source and binary forms, with or without |
| 14 | * modification, are permitted provided that the following conditions |
| 15 | * are met: |
| 16 | * 1. Redistributions of source code must retain the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer. |
| 18 | * 2. Redistributions in binary form must reproduce the above copyright |
| 19 | * notice, this list of conditions and the following disclaimer in the |
| 20 | * documentation and/or other materials provided with the distribution. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #ifndef _MACHINE_STACK_H_ |
| 36 | #define _MACHINE_STACK_H_ |
| 37 | |
| 38 | #define INKERNEL(va) ((va) >= VM_MIN_KERNEL_ADDRESS && \ |
| 39 | (va) <= VM_MAX_KERNEL_ADDRESS) |
| 40 | |
| 41 | struct unwind_state { |
| 42 | uintptr_t fp; |
| 43 | uintptr_t sp; |
| 44 | uintptr_t pc; |
| 45 | }; |
| 46 | |
| 47 | bool unwind_frame(struct thread *, struct unwind_state *); |
| 48 | |
| 49 | #ifdef _SYS_PROC_H_ |
| 50 | |
| 51 | #include <machine/pcb.h> |
| 52 | |
| 53 | /* Get the current kernel thread stack usage. */ |
| 54 | #define GET_STACK_USAGE(total, used) do { \ |
| 55 | struct thread *td = curthread; \ |
| 56 | (total) = td->td_kstack_pages * PAGE_SIZE - sizeof(struct pcb); \ |
| 57 | (used) = td->td_kstack + (total) - (vm_offset_t)&td; \ |
| 58 | } while (0) |
| 59 | |
| 60 | static __inline bool |
| 61 | kstack_contains(struct thread *td, vm_offset_t va, size_t len) |
| 62 | { |
| 63 | return (va >= td->td_kstack && va + len >= va && |
| 64 | va + len <= td->td_kstack + td->td_kstack_pages * PAGE_SIZE - |
| 65 | sizeof(struct pcb)); |
| 66 | } |
| 67 | #endif /* _SYS_PROC_H_ */ |
| 68 | |
| 69 | #endif /* !_MACHINE_STACK_H_ */ |