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_ */ 70