1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/* $OpenBSD: pmdb.h,v 1.5 2002/08/08 18:27:57 art Exp $ */
/*
* Copyright (c) 2002 Artur Grabowski <art@openbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/signal.h> /* for NSIG */
#include <sys/queue.h>
#include <sys/ptrace.h>
#include <sys/stat.h>
#include <err.h>
/* XXX - ugh, yuck, bleah. */
#ifndef PT_STEP
#define PT_STEP PT_CONTINUE
#endif
/*
* Process handling.
*/
struct breakpoint;
struct callback;
struct corefile;
struct sym_table;
struct sym_ops;
struct reg;
/* XXX - should be machdep some day. */
typedef unsigned long reg;
/* The state for a debugged process. */
struct pstate {
pid_t ps_pid;
enum { NONE, LOADED, RUNNING, STOPPED, TERMINATED } ps_state;
int ps_argc;
char **ps_argv;
int ps_flags;
int ps_signum;
int ps_sigstate[NSIG];
reg ps_npc;
TAILQ_HEAD(,sym_table) ps_syms; /* all symbols tables in a list */
struct sym_table *ps_sym_exe; /* symbol table for the executable */
struct sym_ops *ps_sops; /* operations on symbol tables */
struct stat exec_stat; /* stat of the exec file */
struct corefile *ps_core; /* core file data */
TAILQ_HEAD(,breakpoint) ps_bkpts; /* breakpoints */
TAILQ_HEAD(,callback) ps_sstep_cbs; /* single step actions */
};
/* flags in ps_flags */
#define PSF_SYMBOLS 0x02 /* basic symbols loaded */
#define PSF_KILL 0x04 /* kill this process asap */
#define PSF_STEP 0x08 /* next continue should sstep */
#define PSF_CORE 0x10 /* core file loaded */
#define PSF_ATCH 0x20 /* process attached with PT_ATTACH */
/* ps_sigstate */
#define SS_STOP 0x00
#define SS_IGNORE 0x01
/* misc helper functions */
int process_kill(struct pstate *);
int read_from_pid(pid_t pid, off_t from, void *to, size_t size);
int write_to_pid(pid_t pid, off_t to, void *from, size_t size);
/* process.c */
int process_load(struct pstate *);
int process_run(struct pstate *);
int process_read(struct pstate *, off_t, void *, size_t);
int process_write(struct pstate *, off_t, void *, size_t);
int process_getregs(struct pstate *, struct reg *);
int cmd_process_run(int, char **, void *);
int cmd_process_cont(int, char **, void *);
int cmd_process_kill(int, char **, void *);
int cmd_process_setenv(int, char **, void *);
/* signal.c */
void init_sigstate(struct pstate *);
void process_signal(struct pstate *, int, int, int);
int cmd_signal_ignore(int, char **, void *);
int cmd_signal_show(int, char **, void *);
/*
* Machine dependent stuff.
*/
/* register names */
struct md_def {
const char **md_reg_names; /* array of register names */
const int nregs; /* number of registers */
const int pcoff; /* offset of the pc */
};
extern struct md_def md_def;
void md_def_init(void);
#define MDF_MAX_ARGS 16
struct md_frame {
reg pc, fp;
int nargs;
reg args[MDF_MAX_ARGS];
};
/*
* Return the registers for the process "ps" in the frame "frame".
*/
int md_getframe(struct pstate *, int, struct md_frame *);
int md_getregs(struct pstate *, reg *);
/* misc */
void *emalloc(size_t);
|
