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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/* Host-dependent code for Sun-3 for GDB, the GNU debugger.
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1996, 1999, 2000, 2001
Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "regcache.h"
#include <sys/ptrace.h>
#define KERNEL /* To get floating point reg definitions */
#include <machine/reg.h>
static void fetch_core_registers (char *, unsigned, int, CORE_ADDR);
void
fetch_inferior_registers (int regno)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
registers_fetched ();
ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_registers);
if (FP0_REGNUM >= 0)
ptrace (PTRACE_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_fp_registers);
memcpy (registers, &inferior_registers, 16 * 4);
if (FP0_REGNUM >= 0)
memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
sizeof inferior_fp_registers.fps_regs);
*(int *) ®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
*(int *) ®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
if (FP0_REGNUM >= 0)
memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)],
&inferior_fp_registers.fps_control,
sizeof inferior_fp_registers -
sizeof inferior_fp_registers.fps_regs);
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (int regno)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
memcpy (&inferior_registers, registers, 16 * 4);
if (FP0_REGNUM >= 0)
memcpy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)],
sizeof inferior_fp_registers.fps_regs);
inferior_registers.r_ps = *(int *) ®isters[REGISTER_BYTE (PS_REGNUM)];
inferior_registers.r_pc = *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)];
if (FP0_REGNUM >= 0)
memcpy (&inferior_fp_registers.fps_control,
®isters[REGISTER_BYTE (FPC_REGNUM)],
sizeof inferior_fp_registers -
sizeof inferior_fp_registers.fps_regs);
ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_registers);
if (FP0_REGNUM >= 0)
ptrace (PTRACE_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_fp_registers);
}
/* All of this stuff is only relevant if both host and target are sun3. */
/* Provide registers to GDB from a core file.
CORE_REG_SECT points to an array of bytes, which were obtained from
a core file which BFD thinks might contain register contents.
CORE_REG_SIZE is its size.
WHICH says which register set corelow suspects this is:
0 --- the general-purpose register set
2 --- the floating-point register set
REG_ADDR isn't used. */
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
struct regs *regs = (struct regs *) core_reg_sect;
if (which == 0)
{
if (core_reg_size < sizeof (struct regs))
error ("Can't find registers in core file");
memcpy (registers, (char *) regs, 16 * 4);
supply_register (PS_REGNUM, (char *) ®s->r_ps);
supply_register (PC_REGNUM, (char *) ®s->r_pc);
}
else if (which == 2)
{
#define fpustruct ((struct fpu *) core_reg_sect)
if (core_reg_size >= sizeof (struct fpu))
{
if (FP0_REGNUM >= 0)
{
memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)],
fpustruct->f_fpstatus.fps_regs,
sizeof fpustruct->f_fpstatus.fps_regs);
memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)],
&fpustruct->f_fpstatus.fps_control,
sizeof fpustruct->f_fpstatus -
sizeof fpustruct->f_fpstatus.fps_regs);
}
}
else
fprintf_unfiltered (gdb_stderr,
"Couldn't read float regs from core file\n");
}
}
/* Register that we are able to handle sun3 core file formats.
FIXME: is this really bfd_target_unknown_flavour? */
static struct core_fns sun3_core_fns =
{
bfd_target_unknown_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_core_registers, /* core_read_registers */
NULL /* next */
};
void
_initialize_core_sun3 (void)
{
add_core_fns (&sun3_core_fns);
}
|
