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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #ifndef _SYS_KDI_REGS_H
27 #define _SYS_KDI_REGS_H
28
29 #pragma ident "%Z%%M% %I% %E% SMI"
30
31 #ifndef _ASM
32 #include <sys/types.h>
33 #include <sys/segments.h>
34 #include <sys/regset.h>
35 #include <sys/privregs.h>
36 #endif
37
38 #if defined(__amd64)
39 #include <amd64/sys/kdi_regs.h>
40 #elif defined(__i386)
41 #include <ia32/sys/kdi_regs.h>
42 #endif
43
44 #ifdef __cplusplus
45 extern "C" {
46 #endif
47
48 #define KDI_NCRUMBS 5
49
50 #define KDI_CPU_STATE_NONE 0
51 #define KDI_CPU_STATE_MASTER 1
52 #define KDI_CPU_STATE_SLAVE 2
53
54 #define KDIREG_DRCTL_WPALLEN_MASK 0x000000ff
55 #define KDIREG_DRSTAT_RESERVED 0xffff0ff0
56 #define KDIREG_DRCTL_RESERVED 0x00000700
57
58 #define KDI_MSR_READ 0x1 /* read during entry (unlimited) */
59 #define KDI_MSR_WRITE 0x2 /* write during exit (unlimited) */
60 #define KDI_MSR_WRITEDELAY 0x4 /* write after last branch (<= 1) */
61 #define KDI_MSR_CLEARENTRY 0x3 /* clear before 1st branch (<= 1) */
62
63 #ifndef _ASM
64
65 /*
66 * We maintain a ring buffer of bread crumbs for debugging purposes. The
67 * current buffer pointer is advanced along the ring with each intercepted
68 * trap (debugger entry, invalid memory access, fault during step, etc).
69 */
70 typedef struct kdi_crumb {
71 greg_t krm_cpu_state; /* This CPU's state at last entry */
72 greg_t krm_pc; /* Instruction pointer at trap */
73 greg_t krm_sp; /* Stack pointer at trap */
74 greg_t krm_trapno; /* The last trap number */
75 greg_t krm_flag; /* KAIF_CRUMB_F_* */
76 } kdi_crumb_t;
77
78 #define KDI_MAXWPIDX 3
79
80 /*
81 * Storage for %dr0-3, %dr6, and %dr7.
82 */
83 typedef struct kdi_drreg {
84 greg_t dr_ctl;
85 greg_t dr_stat;
86 greg_t dr_addr[KDI_MAXWPIDX + 1];
87 } kdi_drreg_t;
88
89 typedef struct kdi_msr {
90 uint_t msr_num;
91 uint_t msr_type;
92 union {
93 uint64_t *_msr_valp;
94 uint64_t _msr_val;
95 } _u;
96 } kdi_msr_t;
97
98 #define kdi_msr_val _u._msr_val
99 #define kdi_msr_valp _u._msr_valp
100
101 /*
102 * Data structure used to hold all of the state for a given CPU.
103 */
104 typedef struct kdi_cpusave {
105 greg_t *krs_gregs; /* saved registers */
106
107 kdi_drreg_t krs_dr; /* saved debug registers */
108
109 user_desc_t *krs_gdt; /* GDT address */
110 gate_desc_t *krs_idt; /* IDT address */
111
112 greg_t krs_cr0; /* saved %cr0 */
113
114 kdi_msr_t *krs_msr; /* ptr to MSR save area */
115
116 uint_t krs_cpu_state; /* KDI_CPU_STATE_* mstr/slv */
117 uint_t krs_cpu_flushed; /* Have caches been flushed? */
118 uint_t krs_cpu_id; /* this CPU's ID */
119
120 /* Bread crumb ring buffer */
121 ulong_t krs_curcrumbidx; /* Current krs_crumbs idx */
122 kdi_crumb_t *krs_curcrumb; /* Pointer to current crumb */
123 kdi_crumb_t krs_crumbs[KDI_NCRUMBS]; /* Crumbs */
124 } kdi_cpusave_t;
125
126 #endif /* !_ASM */
127
128 #ifdef __cplusplus
129 }
130 #endif
131
132 #endif /* _SYS_KDI_REGS_H */