xref: /illumos-gate/usr/src/cmd/mdb/common/kmdb/kvm.h (revision 399ca3a7ff315244c51a7bbd1d3ce2709ef6c7c6)
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  * Copyright 2018 Joyent, Inc.
26  */
27 
28 #ifndef _KVM_H
29 #define	_KVM_H
30 
31 /*
32  * The kmdb target
33  */
34 
35 #include <mdb/mdb_modapi.h>
36 #include <mdb/mdb_target.h>
37 #include <kmdb/kmdb_dpi.h>
38 #include <kmdb/kvm_isadep.h>
39 
40 #include <sys/kobj.h>
41 
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45 
46 #define	KM_F_PRIMARY		1
47 
48 #define	KMT_TRAP_NOTENUM	-1	/* Glob for unnamed traps */
49 #define	KMT_TRAP_ALL		-2	/* Glob for all traps */
50 
51 typedef struct kmt_module {
52 	mdb_list_t	km_list;	/* List forward/back pointers */
53 	char		*km_name;	/* Module name */
54 	char		km_seen;
55 	GElf_Ehdr	km_ehdr;
56 
57 	mdb_gelf_symtab_t *km_symtab;
58 	Shdr		km_symtab_hdr;
59 	Shdr		km_strtab_hdr;
60 	const void	*km_symtab_va;
61 	const void	*km_strtab_va;
62 
63 	uintptr_t	km_text_va;
64 	size_t		km_text_size;
65 	uintptr_t	km_data_va;
66 	size_t		km_data_size;
67 	uintptr_t	km_bss_va;
68 	size_t		km_bss_size;
69 	const void	*km_ctf_va;
70 	size_t		km_ctf_size;
71 
72 	ctf_file_t	*km_ctfp;
73 	struct modctl	km_modctl;
74 	struct module	km_module;
75 	int		km_flags;
76 } kmt_module_t;
77 
78 typedef struct kmt_data {
79 	const mdb_tgt_regdesc_t	*kmt_rds;	/* Register description table */
80 	mdb_nv_t	kmt_modules;		/* Hash table of modules */
81 	mdb_list_t	kmt_modlist;		/* List of mods in load order */
82 	const char	*kmt_rtld_name;		/* Module containing krtld */
83 	caddr_t		kmt_writemap;		/* Used to map PAs for writes */
84 	size_t		kmt_writemapsz;		/* Size of same */
85 	mdb_map_t	kmt_map;		/* Persistant map for callers */
86 	ulong_t		*kmt_trapmap;
87 	size_t		kmt_trapmax;
88 	int		kmt_symavail;		/* Symbol resolution allowed */
89 	uint_t		kmt_narmedbpts;		/* Number of armed brkpts */
90 #if defined(__i386) || defined(__amd64)
91 	struct {
92 		GElf_Sym	_kmt_cmnint;
93 		GElf_Sym	_kmt_cmntrap;
94 		GElf_Sym	_kmt_sysenter;
95 		GElf_Sym	_kmt_brand_sysenter;
96 #if defined(__amd64)
97 		GElf_Sym	_kmt_syscall;
98 		GElf_Sym	_kmt_brand_syscall;
99 #endif
100 	} kmt_intrsyms;
101 #endif
102 } kmt_data_t;
103 
104 #if defined(__i386) || defined(__amd64)
105 #define	kmt_cmnint	kmt_intrsyms._kmt_cmnint
106 #define	kmt_cmntrap	kmt_intrsyms._kmt_cmntrap
107 #endif
108 
109 typedef struct kmt_defbp {
110 	mdb_list_t dbp_bplist;
111 	char *dbp_objname;
112 	char *dbp_symname;
113 	int dbp_ref;
114 } kmt_defbp_t;
115 
116 typedef struct kmt_brkpt {
117 	uintptr_t kb_addr;			/* Breakpoint address */
118 	mdb_instr_t kb_oinstr;			/* Replaced instruction */
119 } kmt_brkpt_t;
120 
121 typedef struct kmt_bparg {
122 	uintptr_t ka_addr;			/* Explicit address */
123 	char *ka_symbol;			/* Symbolic name */
124 	kmt_defbp_t *ka_defbp;
125 } kmt_bparg_t;
126 
127 extern void kmt_printregs(const mdb_tgt_gregset_t *gregs);
128 
129 extern const char *kmt_def_dismode(void);
130 
131 extern void kmt_init_isadep(mdb_tgt_t *);
132 extern void kmt_startup_isadep(mdb_tgt_t *);
133 
134 extern ssize_t kmt_write(mdb_tgt_t *, const void *, size_t, uintptr_t);
135 extern ssize_t kmt_pwrite(mdb_tgt_t *, const void *, size_t, physaddr_t);
136 extern ssize_t kmt_rw(mdb_tgt_t *, void *, size_t, uint64_t,
137     ssize_t (*)(void *, size_t, uint64_t));
138 extern ssize_t kmt_writer(void *, size_t, uint64_t);
139 extern ssize_t kmt_ioread(mdb_tgt_t *, void *, size_t, uintptr_t);
140 extern ssize_t kmt_iowrite(mdb_tgt_t *, const void *, size_t, uintptr_t);
141 
142 extern int kmt_step_out(mdb_tgt_t *, uintptr_t *);
143 extern int kmt_next(mdb_tgt_t *, uintptr_t *);
144 
145 extern int kmt_stack(uintptr_t, uint_t, int, const mdb_arg_t *);
146 extern int kmt_stackv(uintptr_t, uint_t, int, const mdb_arg_t *);
147 extern int kmt_stackr(uintptr_t, uint_t, int, const mdb_arg_t *);
148 extern int kmt_cpustack(uintptr_t, uint_t, int, const mdb_arg_t *, int, int);
149 
150 extern const char *kmt_trapname(int);
151 
152 #ifdef __cplusplus
153 }
154 #endif
155 
156 #endif /* _KVM_H */
157