1 /* 2 * This file is in the public domain. 3 */ 4 5 #ifndef _MACHINE_STACK_H_ 6 #define _MACHINE_STACK_H_ 7 8 #include <x86/stack.h> 9 10 #ifdef _SYS_PROC_H_ 11 12 /* Get the current kernel thread stack usage. */ 13 #define GET_STACK_USAGE(total, used) do { \ 14 struct thread *td = curthread; \ 15 (total) = td->td_kstack_pages * PAGE_SIZE; \ 16 (used) = (char *)td->td_kstack + \ 17 td->td_kstack_pages * PAGE_SIZE - \ 18 (char *)&td; \ 19 } while (0) 20 21 static __inline bool 22 kstack_contains(struct thread *td, vm_offset_t va, size_t len) 23 { 24 return (va >= td->td_kstack && va + len >= va && 25 va + len <= td->td_kstack + td->td_kstack_pages * PAGE_SIZE); 26 } 27 #endif /* _SYS_PROC_H_ */ 28 29 #endif 30