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
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/* Target-dependent code for PowerPC 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 "gdbcore.h"
#include "regcache.h"
#include "target.h"
#include "breakpoint.h"
#include "value.h"
#include "ppc-tdep.h"
#include "ppcnbsd-tdep.h"
#include "nbsd-tdep.h"
#include "solib-svr4.h"
#define REG_FIXREG_OFFSET(x) ((x) * 4)
#define REG_LR_OFFSET (32 * 4)
#define REG_CR_OFFSET (33 * 4)
#define REG_XER_OFFSET (34 * 4)
#define REG_CTR_OFFSET (35 * 4)
#define REG_PC_OFFSET (36 * 4)
#define SIZEOF_STRUCT_REG (37 * 4)
#define FPREG_FPR_OFFSET(x) ((x) * 8)
#define FPREG_FPSCR_OFFSET (32 * 8)
#define SIZEOF_STRUCT_FPREG (33 * 8)
void
ppcnbsd_supply_reg (char *regs, int regno)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
int i;
for (i = 0; i <= 31; i++)
{
if (regno == i || regno == -1)
supply_register (i, regs + REG_FIXREG_OFFSET (i));
}
if (regno == tdep->ppc_lr_regnum || regno == -1)
supply_register (tdep->ppc_lr_regnum, regs + REG_LR_OFFSET);
if (regno == tdep->ppc_cr_regnum || regno == -1)
supply_register (tdep->ppc_cr_regnum, regs + REG_CR_OFFSET);
if (regno == tdep->ppc_xer_regnum || regno == -1)
supply_register (tdep->ppc_xer_regnum, regs + REG_XER_OFFSET);
if (regno == tdep->ppc_ctr_regnum || regno == -1)
supply_register (tdep->ppc_ctr_regnum, regs + REG_CTR_OFFSET);
if (regno == PC_REGNUM || regno == -1)
supply_register (PC_REGNUM, regs + REG_PC_OFFSET);
}
void
ppcnbsd_fill_reg (char *regs, int regno)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
int i;
for (i = 0; i <= 31; i++)
{
if (regno == i || regno == -1)
regcache_collect (i, regs + REG_FIXREG_OFFSET (i));
}
if (regno == tdep->ppc_lr_regnum || regno == -1)
regcache_collect (tdep->ppc_lr_regnum, regs + REG_LR_OFFSET);
if (regno == tdep->ppc_cr_regnum || regno == -1)
regcache_collect (tdep->ppc_cr_regnum, regs + REG_CR_OFFSET);
if (regno == tdep->ppc_xer_regnum || regno == -1)
regcache_collect (tdep->ppc_xer_regnum, regs + REG_XER_OFFSET);
if (regno == tdep->ppc_ctr_regnum || regno == -1)
regcache_collect (tdep->ppc_ctr_regnum, regs + REG_CTR_OFFSET);
if (regno == PC_REGNUM || regno == -1)
regcache_collect (PC_REGNUM, regs + REG_PC_OFFSET);
}
void
ppcnbsd_supply_fpreg (char *fpregs, int regno)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
int i;
for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++)
{
if (regno == i || regno == -1)
supply_register (i, fpregs + FPREG_FPR_OFFSET (i - FP0_REGNUM));
}
if (regno == tdep->ppc_fpscr_regnum || regno == -1)
supply_register (tdep->ppc_fpscr_regnum, fpregs + FPREG_FPSCR_OFFSET);
}
void
ppcnbsd_fill_fpreg (char *fpregs, int regno)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
int i;
for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++)
{
if (regno == i || regno == -1)
regcache_collect (i, fpregs + FPREG_FPR_OFFSET (i - FP0_REGNUM));
}
if (regno == tdep->ppc_fpscr_regnum || regno == -1)
regcache_collect (tdep->ppc_fpscr_regnum, fpregs + FPREG_FPSCR_OFFSET);
}
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
char *regs, *fpregs;
/* We get everything from one section. */
if (which != 0)
return;
regs = core_reg_sect;
fpregs = core_reg_sect + SIZEOF_STRUCT_REG;
/* Integer registers. */
ppcnbsd_supply_reg (regs, -1);
/* Floating point registers. */
ppcnbsd_supply_fpreg (fpregs, -1);
}
static void
fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
switch (which)
{
case 0: /* Integer registers. */
if (core_reg_size != SIZEOF_STRUCT_REG)
warning ("Wrong size register set in core file.");
else
ppcnbsd_supply_reg (core_reg_sect, -1);
break;
case 2: /* Floating point registers. */
if (core_reg_size != SIZEOF_STRUCT_FPREG)
warning ("Wrong size FP register set in core file.");
else
ppcnbsd_supply_fpreg (core_reg_sect, -1);
break;
default:
/* Don't know what kind of register request this is; just ignore it. */
break;
}
}
static struct core_fns ppcnbsd_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 */
};
static struct core_fns ppcnbsd_elfcore_fns =
{
bfd_target_elf_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_elfcore_registers, /* core_read_registers */
NULL /* next */
};
static void
ppcnbsd_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
/* Until November 2001, gcc was not complying to the SYSV ABI for
returning structures less than or equal to 8 bytes in size. It was
returning everything in memory. When this was corrected, it wasn't
fixed for native platforms. */
set_gdbarch_use_struct_convention (gdbarch,
ppc_sysv_abi_broken_use_struct_convention);
set_solib_svr4_fetch_link_map_offsets (gdbarch,
nbsd_ilp32_solib_svr4_fetch_link_map_offsets);
}
void
_initialize_ppcnbsd_tdep (void)
{
gdbarch_register_osabi (bfd_arch_powerpc, GDB_OSABI_NETBSD_ELF,
ppcnbsd_init_abi);
add_core_fns (&ppcnbsd_core_fns);
add_core_fns (&ppcnbsd_elfcore_fns);
}
|
