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/*-
* Mach Operating System
* Copyright (c) 1992 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#ifndef _MACHINE_STACK_H_
#define _MACHINE_STACK_H_
extern int trapexit[];
extern int asttrapexit[];
extern int end[];
#ifdef _SYS_PROC_H_
#include <machine/pcb.h>
/* Get the current kernel thread stack usage. */
#define GET_STACK_USAGE(total, used) do { \
struct thread *td = curthread; \
(total) = td->td_kstack_pages * PAGE_SIZE - sizeof(struct pcb); \
(used) = td->td_kstack + (total) - (vm_offset_t)&td; \
} while (0)
static __inline bool
kstack_contains(struct thread *td, vm_offset_t va, size_t len)
{
return (va >= td->td_kstack && va + len >= va &&
va + len <= td->td_kstack + td->td_kstack_pages * PAGE_SIZE -
sizeof(struct pcb));
}
#endif /* _SYS_PROC_H_ */
#endif /* !_MACHINE_STACK_H_ */
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