xref: /illumos-gate/usr/src/uts/sparc/sys/pcb.h (revision 07a48826)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2009 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 #include <sys/regset.h>
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 /*
37  * Sun software process control block
38  */
39 
40 #ifndef _ASM
41 typedef struct pcb {
42 	int	pcb_flags;	/* various state flags; cleared on fork */
43 	uint32_t pcb_trap0addr;	/* addr of user level trap 0 handler */
44 				/* deliberately restricted to 32 bits */
45 				/* because only used for SunOS programs */
46 	uint_t	pcb_instr;	/* /proc: instruction at stop */
47 	enum { XREGNONE = 0, XREGPRESENT, XREGMODIFIED }
48 		pcb_xregstat;	/* state of contents of pcb_xregs */
49 	struct	rwindow pcb_xregs; /* locals+ins fetched/set via /proc */
50 	int	pcb_step;	/* used while single-stepping */
51 	caddr_t	pcb_tracepc;	/* used while single-stepping */
52 } pcb_t;
53 #endif /* ! _ASM */
54 
55 /* pcb_flags */
56 #define	PRSTOP_CALLED	0x01	/* prstop() has been called for this lwp */
57 #define	INSTR_VALID	0x02	/* value in pcb_instr is valid (/proc) */
58 #define	NORMAL_STEP	0x04	/* normal debugger requested single-step */
59 #define	WATCH_STEP	0x08	/* single-stepping in watchpoint emulation */
60 #define	CPC_OVERFLOW	0x10	/* performance counters overflowed */
61 #define	ASYNC_HWERR	0x20	/* asynchronous h/w error (e.g. parity error) */
62 #define	ASYNC_BERR	0x40	/* asynchronous bus error */
63 #define	ASYNC_BTO	0x80	/* asynchronous bus timeout */
64 #define	ASYNC_MOD_ILL	0x100	/* async module error w/ illegal instr/cycle */
65 #define	ASYNC_MOD_SEGV	0x200	/* async module error w/ address violation */
66 #define	ASYNC_ERR	(ASYNC_HWERR | ASYNC_BERR | ASYNC_BTO | \
67 			    ASYNC_MOD_ILL | ASYNC_MOD_SEGV)
68 
69 /* pcb_step */
70 #define	STEP_NONE	0	/* no single step */
71 #define	STEP_REQUESTED	1	/* arrange to single-step the lwp */
72 #define	STEP_ACTIVE	2	/* actively patching addr, set active flag */
73 #define	STEP_WASACTIVE	3	/* wrap up after taking single-step fault */
74 
75 #ifdef	__cplusplus
76 }
77 #endif
78 
79 #endif	/* _SYS_PCB_H */
80