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
|
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2004 David Xu <davidxu@freebsd.org>
* Copyright (c) 2004 Marcel Moolenaar
* 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/procfs.h>
#include <string.h>
#include <thread_db.h>
#include <ucontext.h>
#include "libpthread_db.h"
void
pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
{
mcontext_t *mc = &uc->uc_mcontext;
mc->mc_rdi = r->r_rdi;
mc->mc_rsi = r->r_rsi;
mc->mc_rdx = r->r_rdx;
mc->mc_rcx = r->r_rcx;
mc->mc_r8 = r->r_r8;
mc->mc_r9 = r->r_r9;
mc->mc_rax = r->r_rax;
mc->mc_rbx = r->r_rbx;
mc->mc_rbp = r->r_rbp;
mc->mc_r10 = r->r_r10;
mc->mc_r11 = r->r_r11;
mc->mc_r12 = r->r_r12;
mc->mc_r13 = r->r_r13;
mc->mc_r14 = r->r_r14;
mc->mc_r15 = r->r_r15;
mc->mc_rip = r->r_rip;
mc->mc_cs = r->r_cs;
mc->mc_rflags = r->r_rflags;
mc->mc_rsp = r->r_rsp;
mc->mc_ss = r->r_ss;
}
void
pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
{
const mcontext_t *mc = &uc->uc_mcontext;
r->r_rdi = mc->mc_rdi;
r->r_rsi = mc->mc_rsi;
r->r_rdx = mc->mc_rdx;
r->r_rcx = mc->mc_rcx;
r->r_r8 = mc->mc_r8;
r->r_r9 = mc->mc_r9;
r->r_rax = mc->mc_rax;
r->r_rbx = mc->mc_rbx;
r->r_rbp = mc->mc_rbp;
r->r_r10 = mc->mc_r10;
r->r_r11 = mc->mc_r11;
r->r_r12 = mc->mc_r12;
r->r_r13 = mc->mc_r13;
r->r_r14 = mc->mc_r14;
r->r_r15 = mc->mc_r15;
r->r_rip = mc->mc_rip;
r->r_cs = mc->mc_cs;
r->r_rflags = mc->mc_rflags;
r->r_rsp = mc->mc_rsp;
r->r_ss = mc->mc_ss;
}
void
pt_fpreg_to_ucontext(const struct fpreg* r, ucontext_t *uc)
{
memcpy(&uc->uc_mcontext.mc_fpstate, r, sizeof(*r));
}
void
pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
{
memcpy(r, &uc->uc_mcontext.mc_fpstate, sizeof(*r));
}
void
pt_md_init(void)
{
/* Nothing to do */
}
int
pt_reg_sstep(struct reg *reg, int step)
{
register_t old;
old = reg->r_rflags;
if (step)
reg->r_rflags |= 0x0100;
else
reg->r_rflags &= ~0x0100;
return (old != reg->r_rflags); /* changed ? */
}
|
