| psl.h (256281) | psl.h (258559) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)psl.h 5.2 (Berkeley) 1/18/91 | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 16 unchanged lines hidden (view full) --- 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)psl.h 5.2 (Berkeley) 1/18/91 |
| 33 * $FreeBSD: stable/10/sys/x86/include/psl.h 233204 2012-03-19 21:29:57Z tijl $ | 33 * $FreeBSD: stable/10/sys/x86/include/psl.h 258559 2013-11-25 15:58:48Z emaste $ |
| 34 */ 35 36#ifndef _MACHINE_PSL_H_ 37#define _MACHINE_PSL_H_ 38 39/* 40 * 386 processor status longword. 41 */ --- 30 unchanged lines hidden (view full) --- 72#define PSL_USER (PSL_RESERVED_DEFAULT | PSL_I) 73 74/* 75 * Bits that can be changed in user mode on 486's. We allow these bits 76 * to be changed using ptrace(), sigreturn() and procfs. Setting PS_NT 77 * is undesirable but it may as well be allowed since users can inflict 78 * it on the kernel directly. Changes to PSL_AC are silently ignored on 79 * 386's. | 34 */ 35 36#ifndef _MACHINE_PSL_H_ 37#define _MACHINE_PSL_H_ 38 39/* 40 * 386 processor status longword. 41 */ --- 30 unchanged lines hidden (view full) --- 72#define PSL_USER (PSL_RESERVED_DEFAULT | PSL_I) 73 74/* 75 * Bits that can be changed in user mode on 486's. We allow these bits 76 * to be changed using ptrace(), sigreturn() and procfs. Setting PS_NT 77 * is undesirable but it may as well be allowed since users can inflict 78 * it on the kernel directly. Changes to PSL_AC are silently ignored on 79 * 386's. |
| 80 * 81 * Users are allowed to change the privileged flag PSL_RF. The cpu sets PSL_RF 82 * in tf_eflags for faults. Debuggers should sometimes set it there too. 83 * tf_eflags is kept in the signal context during signal handling and there is 84 * no other place to remember it, so the PSL_RF bit may be corrupted by the 85 * signal handler without us knowing. Corruption of the PSL_RF bit at worst 86 * causes one more or one less debugger trap, so allowing it is fairly 87 * harmless. |
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| 80 */ 81#define PSL_USERCHANGE (PSL_C | PSL_PF | PSL_AF | PSL_Z | PSL_N | PSL_T \ | 88 */ 89#define PSL_USERCHANGE (PSL_C | PSL_PF | PSL_AF | PSL_Z | PSL_N | PSL_T \ |
| 82 | PSL_D | PSL_V | PSL_NT | PSL_AC | PSL_ID) | 90 | PSL_D | PSL_V | PSL_NT | PSL_RF | PSL_AC | PSL_ID) |
| 83 84#endif /* !_MACHINE_PSL_H_ */ | 91 92#endif /* !_MACHINE_PSL_H_ */ |