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
|
/* Native-dependent code for SPARC systems running NetBSD.
Copyright 2002 Free Software Foundation, Inc.
Contributed by Wasabi Systems, 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 "regcache.h"
#include "sparcnbsd-tdep.h"
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
/* NOTE: We don't bother with any of the deferred_store nonsense; it
makes things a lot more complicated than they need to be. */
/* Determine if PT_GETREGS fetches this register. */
static int
getregs_supplies (int regno)
{
return (regno == PS_REGNUM
|| regno == PC_REGNUM
|| regno == NPC_REGNUM
|| regno == Y_REGNUM
|| (regno >= G0_REGNUM && regno <= G7_REGNUM)
|| (regno >= O0_REGNUM && regno <= O7_REGNUM)
/* stack regs (handled by sparcnbsd_supply_reg) */
|| (regno >= L0_REGNUM && regno <= I7_REGNUM));
}
/* Determine if PT_GETFPREGS fetches this register. */
static int
getfpregs_supplies (int regno)
{
return ((regno >= FP0_REGNUM && regno <= (FP0_REGNUM + 31))
|| regno == FPS_REGNUM);
}
void
fetch_inferior_registers (int regno)
{
/* We don't use deferred stores. */
if (deferred_stores)
internal_error (__FILE__, __LINE__,
"fetch_inferior_registers: deferred stores pending");
if (regno == -1 || getregs_supplies (regno))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) ®s, 0) == -1)
perror_with_name ("Couldn't get registers");
sparcnbsd_supply_reg32 ((char *) ®s, regno);
if (regno != -1)
return;
}
if (regno == -1 || getfpregs_supplies (regno))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point registers");
sparcnbsd_supply_fpreg32 ((char *) &fpregs, regno);
if (regno != -1)
return;
}
}
void
store_inferior_registers (int regno)
{
/* We don't use deferred stores. */
if (deferred_stores)
internal_error (__FILE__, __LINE__,
"store_inferior_registers: deferred stores pending");
if (regno == -1 || getregs_supplies (regno))
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) ®s, 0) == -1)
perror_with_name ("Couldn't get registers");
sparcnbsd_fill_reg32 ((char *) ®s, regno);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) ®s, 0) == -1)
perror_with_name ("Couldn't write registers");
/* Deal with the stack regs. */
if (regno == -1 || regno == SP_REGNUM
|| (regno >= L0_REGNUM && regno <= I7_REGNUM))
{
CORE_ADDR sp = read_register (SP_REGNUM);
int i;
char buf[4];
for (i = L0_REGNUM; i <= I7_REGNUM; i++)
{
if (regno == -1 || regno == SP_REGNUM || regno == i)
{
regcache_collect (i, buf);
target_write_memory (sp + ((i - L0_REGNUM) * 4),
buf, sizeof (buf));
}
}
}
if (regno != -1)
return;
}
if (regno == -1 || getfpregs_supplies (regno))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point registers");
sparcnbsd_fill_fpreg32 ((char *) &fpregs, regno);
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't write floating point registers");
if (regno != -1)
return;
}
}
|
