stack.h (2176B) - Raw
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_ */