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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* PPC linux native support.
Copyright 1988, 1989, 1991, 1992, 1994, 1996, 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 "frame.h"
#include "inferior.h"
#include "gdbcore.h"
#include "regcache.h"
#include <sys/types.h>
#include <sys/param.h>
#include <signal.h>
#include <sys/user.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
#include "ppc-tdep.h"
int
kernel_u_size (void)
{
return (sizeof (struct user));
}
/* *INDENT-OFF* */
/* registers layout, as presented by the ptrace interface:
PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7,
PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_R13, PT_R14, PT_R15,
PT_R16, PT_R17, PT_R18, PT_R19, PT_R20, PT_R21, PT_R22, PT_R23,
PT_R24, PT_R25, PT_R26, PT_R27, PT_R28, PT_R29, PT_R30, PT_R31,
PT_FPR0, PT_FPR0 + 2, PT_FPR0 + 4, PT_FPR0 + 6, PT_FPR0 + 8, PT_FPR0 + 10, PT_FPR0 + 12, PT_FPR0 + 14,
PT_FPR0 + 16, PT_FPR0 + 18, PT_FPR0 + 20, PT_FPR0 + 22, PT_FPR0 + 24, PT_FPR0 + 26, PT_FPR0 + 28, PT_FPR0 + 30,
PT_FPR0 + 32, PT_FPR0 + 34, PT_FPR0 + 36, PT_FPR0 + 38, PT_FPR0 + 40, PT_FPR0 + 42, PT_FPR0 + 44, PT_FPR0 + 46,
PT_FPR0 + 48, PT_FPR0 + 50, PT_FPR0 + 52, PT_FPR0 + 54, PT_FPR0 + 56, PT_FPR0 + 58, PT_FPR0 + 60, PT_FPR0 + 62,
PT_NIP, PT_MSR, PT_CCR, PT_LNK, PT_CTR, PT_XER, PT_MQ */
/* *INDENT_ON * */
int
ppc_register_u_addr (int ustart, int regno)
{
int u_addr = -1;
/* General purpose registers occupy 1 slot each in the buffer */
if (regno >= gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum
&& regno <= gdbarch_tdep (current_gdbarch)->ppc_gplast_regnum )
u_addr = (ustart + (PT_R0 + regno) * 4);
/* Floating point regs: 2 slots each */
if (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)
u_addr = (ustart + (PT_FPR0 + (regno - FP0_REGNUM) * 2) * 4);
/* UISA special purpose registers: 1 slot each */
if (regno == PC_REGNUM)
u_addr = ustart + PT_NIP * 4;
if (regno == gdbarch_tdep (current_gdbarch)->ppc_lr_regnum)
u_addr = ustart + PT_LNK * 4;
if (regno == gdbarch_tdep (current_gdbarch)->ppc_cr_regnum)
u_addr = ustart + PT_CCR * 4;
if (regno == gdbarch_tdep (current_gdbarch)->ppc_xer_regnum)
u_addr = ustart + PT_XER * 4;
if (regno == gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum)
u_addr = ustart + PT_CTR * 4;
if (regno == gdbarch_tdep (current_gdbarch)->ppc_mq_regnum)
u_addr = ustart + PT_MQ * 4;
if (regno == gdbarch_tdep (current_gdbarch)->ppc_ps_regnum)
u_addr = ustart + PT_MSR * 4;
return u_addr;
}
void
supply_gregset (gdb_gregset_t *gregsetp)
{
int regi;
register elf_greg_t *regp = (elf_greg_t *) gregsetp;
for (regi = 0; regi < 32; regi++)
supply_register (regi, (char *) (regp + regi));
supply_register (PC_REGNUM, (char *) (regp + PT_NIP));
supply_register (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum,
(char *) (regp + PT_LNK));
supply_register (gdbarch_tdep (current_gdbarch)->ppc_cr_regnum,
(char *) (regp + PT_CCR));
supply_register (gdbarch_tdep (current_gdbarch)->ppc_xer_regnum,
(char *) (regp + PT_XER));
supply_register (gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum,
(char *) (regp + PT_CTR));
supply_register (gdbarch_tdep (current_gdbarch)->ppc_mq_regnum,
(char *) (regp + PT_MQ));
supply_register (gdbarch_tdep (current_gdbarch)->ppc_ps_regnum,
(char *) (regp + PT_MSR));
}
void
fill_gregset (gdb_gregset_t *gregsetp, int regno)
{
int regi;
elf_greg_t *regp = (elf_greg_t *) gregsetp;
for (regi = 0; regi < 32; regi++)
{
if ((regno == -1) || regno == regi)
regcache_collect (regi, regp + PT_R0 + regi);
}
if ((regno == -1) || regno == PC_REGNUM)
regcache_collect (PC_REGNUM, regp + PT_NIP);
if ((regno == -1)
|| regno == gdbarch_tdep (current_gdbarch)->ppc_lr_regnum)
regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum,
regp + PT_LNK);
if ((regno == -1)
|| regno == gdbarch_tdep (current_gdbarch)->ppc_cr_regnum)
regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_cr_regnum,
regp + PT_CCR);
if ((regno == -1)
|| regno == gdbarch_tdep (current_gdbarch)->ppc_xer_regnum)
regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_xer_regnum,
regp + PT_XER);
if ((regno == -1)
|| regno == gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum)
regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum,
regp + PT_CTR);
if ((regno == -1)
|| regno == gdbarch_tdep (current_gdbarch)->ppc_mq_regnum)
regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_mq_regnum,
regp + PT_MQ);
if ((regno == -1)
|| regno == gdbarch_tdep (current_gdbarch)->ppc_ps_regnum)
regcache_collect (gdbarch_tdep (current_gdbarch)->ppc_ps_regnum,
regp + PT_MSR);
}
void
supply_fpregset (gdb_fpregset_t * fpregsetp)
{
int regi;
for (regi = 0; regi < 32; regi++)
{
supply_register (FP0_REGNUM + regi, (char *) (*fpregsetp + regi));
}
}
/* Given a pointer to a floating point register set in /proc format
(fpregset_t *), update the register specified by REGNO from gdb's idea
of the current floating point register set. If REGNO is -1, update
them all. */
void
fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
{
int regi;
for (regi = 0; regi < 32; regi++)
{
if ((regno == -1) || (regno == FP0_REGNUM + regi))
regcache_collect (FP0_REGNUM + regi, (char *) (*fpregsetp + regi));
}
}
|
