xref: /illumos-gate/usr/src/uts/common/sys/kdi_impl.h (revision 2d6eb4a5e0a47d30189497241345dc5466bb68ab)
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 _KDI_IMPL_H
27 #define	_KDI_IMPL_H
28 
29 #include <sys/kdi.h>
30 #include <sys/kdi_machimpl.h>
31 #include <sys/privregs.h>
32 
33 #ifdef __cplusplus
34 extern "C" {
35 #endif
36 
37 struct module;
38 struct gdscr;
39 
40 /*
41  * The debugvec is used by the kernel to interact with the debugger.
42  */
43 struct kdi_debugvec {
44 	void	(*dv_kctl_vmready)(void);
45 	void	(*dv_kctl_memavail)(void);
46 	void	(*dv_kctl_modavail)(void);
47 	void	(*dv_kctl_thravail)(void);
48 
49 	void	(*dv_vmready)(void);
50 	void	(*dv_memavail)(caddr_t, size_t);
51 	void	(*dv_mod_loaded)(struct modctl *);
52 	void	(*dv_mod_unloading)(struct modctl *);
53 
54 #if defined(__i386) || defined(__amd64)
55 	void	(*dv_handle_fault)(greg_t, greg_t, greg_t, int);
56 #endif
57 #if defined(__sparc)
58 	void	(*dv_kctl_cpu_init)(void);
59 	void	(*dv_cpu_init)(struct cpu *);
60 	void	(*dv_cpr_restart)(void);
61 #endif
62 };
63 
64 typedef struct kdi_plat {
65 	void (*pkdi_system_claim)(void);
66 	void (*pkdi_system_release)(void);
67 	void (*pkdi_console_claim)(void);
68 	void (*pkdi_console_release)(void);
69 } kdi_plat_t;
70 
71 #define	pkdi_system_claim	kdi_plat.pkdi_system_claim
72 #define	pkdi_system_release	kdi_plat.pkdi_system_release
73 #define	pkdi_console_claim	kdi_plat.pkdi_console_claim
74 #define	pkdi_console_release	kdi_plat.pkdi_console_release
75 
76 /*
77  * The KDI, or Kernel/Debugger Interface, consists of an ops vector describing
78  * kernel services that may be directly invoked by the debugger.  Unless
79  * otherwise specified, the functions implementing this ops vector are designed
80  * to function when the debugger has control of the system - when all other CPUs
81  * have been stopped.  In such an environment, blocking services such as memory
82  * allocation or synchronization primitives are not available.
83  */
84 
85 struct kdi {
86 	int kdi_version;
87 
88 	/*
89 	 * Determines whether significant changes (loads or unloads) have
90 	 * been made to the modules since the last time this op was invoked.
91 	 */
92 	int (*kdi_mods_changed)(void);
93 
94 	/*
95 	 * Iterates through the current set of modctls, and invokes the
96 	 * caller-provided callback on each one.
97 	 */
98 	int (*kdi_mod_iter)(int (*)(struct modctl *, void *), void *);
99 
100 	/*
101 	 * Determines whether or not a given module is loaded.
102 	 */
103 	int (*kdi_mod_isloaded)(struct modctl *);
104 
105 	/*
106 	 * Has anything changed between two versions of the same modctl?
107 	 */
108 	int (*kdi_mod_haschanged)(struct modctl *, struct module *,
109 	    struct modctl *, struct module *);
110 
111 	/*
112 	 * Invoked by the debugger when it assumes control of the machine.
113 	 */
114 	void (*kdi_system_claim)(void);
115 
116 	/*
117 	 * Invoked by the debugger when it relinquishes control of the machine.
118 	 */
119 	void (*kdi_system_release)(void);
120 
121 	int (*kdi_pread)(caddr_t, size_t, uint64_t, size_t *);
122 	int (*kdi_pwrite)(caddr_t, size_t, uint64_t, size_t *);
123 	void (*kdi_flush_caches)(void);
124 
125 	size_t (*kdi_range_is_nontoxic)(uintptr_t, size_t, int);
126 
127 	struct cons_polledio *(*kdi_get_polled_io)(void);
128 
129 	int (*kdi_vtop)(uintptr_t, uint64_t *);
130 
131 	kdi_dtrace_state_t (*kdi_dtrace_get_state)(void);
132 	int (*kdi_dtrace_set)(kdi_dtrace_set_t);
133 
134 	void (*kdi_plat_call)(void (*)(void));
135 
136 	void (*kdi_kmdb_enter)(void);
137 
138 	kdi_mach_t kdi_mach;
139 	kdi_plat_t kdi_plat;
140 };
141 
142 extern void kdi_softcall(void (*)(void));
143 extern void kdi_setsoftint(uint64_t);
144 extern int kdi_pread(caddr_t, size_t, uint64_t, size_t *);
145 extern int kdi_pwrite(caddr_t, size_t, uint64_t, size_t *);
146 extern size_t kdi_range_is_nontoxic(uintptr_t, size_t, int);
147 extern void kdi_flush_caches(void);
148 extern kdi_dtrace_state_t kdi_dtrace_get_state(void);
149 extern int kdi_vtop(uintptr_t, uint64_t *);
150 
151 extern void cpu_kdi_init(kdi_t *);
152 extern void mach_kdi_init(kdi_t *);
153 extern void plat_kdi_init(kdi_t *);
154 
155 extern void *boot_kdi_tmpinit(void);
156 extern void boot_kdi_tmpfini(void *);
157 
158 #ifdef __cplusplus
159 }
160 #endif
161 
162 #endif /* _KDI_IMPL_H */
163