xref: /illumos-gate/usr/src/uts/sparc/sys/pcb.h (revision 4703203d)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1990-2002 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _SYS_PCB_H
28 #define	_SYS_PCB_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #include <sys/regset.h>
33 
34 #ifdef	__cplusplus
35 extern "C" {
36 #endif
37 
38 /*
39  * Sun software process control block
40  */
41 
42 #ifndef _ASM
43 typedef struct pcb {
44 	int	pcb_flags;	/* various state flags; cleared on fork */
45 	uint32_t pcb_trap0addr;	/* addr of user level trap 0 handler */
46 				/* deliberately restricted to 32 bits */
47 				/* because only used for SunOS programs */
48 	uint_t	pcb_instr;	/* /proc: instruction at stop */
49 	enum { XREGNONE = 0, XREGPRESENT, XREGMODIFIED }
50 		pcb_xregstat;	/* state of contents of pcb_xregs */
51 	struct	rwindow pcb_xregs; /* locals+ins fetched/set via /proc */
52 	int	pcb_step;	/* used while single-stepping */
53 	caddr_t	pcb_tracepc;	/* used while single-stepping */
54 } pcb_t;
55 #endif /* ! _ASM */
56 
57 /* pcb_flags */
58 #define	INSTR_VALID	0x02	/* value in pcb_instr is valid (/proc) */
59 #define	NORMAL_STEP	0x04	/* normal debugger requested single-step */
60 #define	WATCH_STEP	0x08	/* single-stepping in watchpoint emulation */
61 #define	CPC_OVERFLOW	0x10	/* performance counters overflowed */
62 #define	ASYNC_HWERR	0x20	/* asynchronous h/w error (e.g. parity error) */
63 #define	ASYNC_BERR	0x40	/* asynchronous bus error */
64 #define	ASYNC_BTO	0x80	/* asynchronous bus timeout */
65 #define	ASYNC_MOD_ILL	0x100	/* async module error w/ illegal instr/cycle */
66 #define	ASYNC_MOD_SEGV	0x200	/* async module error w/ address violation */
67 #define	ASYNC_ERR	(ASYNC_HWERR | ASYNC_BERR | ASYNC_BTO | \
68 			    ASYNC_MOD_ILL | ASYNC_MOD_SEGV)
69 
70 /* pcb_step */
71 #define	STEP_NONE	0	/* no single step */
72 #define	STEP_REQUESTED	1	/* arrange to single-step the lwp */
73 #define	STEP_ACTIVE	2	/* actively patching addr, set active flag */
74 #define	STEP_WASACTIVE	3	/* wrap up after taking single-step fault */
75 
76 #ifdef	__cplusplus
77 }
78 #endif
79 
80 #endif	/* _SYS_PCB_H */
81