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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
|
/* Low level Alpha interface, for GDB when running native.
Copyright 1993, 1995, 1996, 1998, 1999, 2000, 2001, 2003
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 "gdb_string.h"
#include "inferior.h"
#include "gdbcore.h"
#include "target.h"
#include "regcache.h"
#include "alpha-tdep.h"
#include <sys/ptrace.h>
#ifdef __linux__
#include <asm/reg.h>
#include <alpha/ptrace.h>
#else
#include <alpha/coreregs.h>
#endif
#include <sys/user.h>
/* Prototypes for local functions. */
static void fetch_osf_core_registers (char *, unsigned, int, CORE_ADDR);
static void fetch_elf_core_registers (char *, unsigned, int, CORE_ADDR);
/* Extract the register values out of the core file and store
them where `read_register' will find them.
CORE_REG_SECT points to the register values themselves, read into memory.
CORE_REG_SIZE is the size of that area.
WHICH says which set of registers we are handling (0 = int, 2 = float
on machines where they are discontiguous).
REG_ADDR is the offset from u.u_ar0 to the register values relative to
core_reg_sect. This is used with old-fashioned core files to
locate the registers in a large upage-plus-stack ".reg" section.
Original upage address X is at location core_reg_sect+x+reg_addr.
*/
static void
fetch_osf_core_registers (char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
int regno;
int addr;
int bad_reg = -1;
/* Table to map a gdb regnum to an index in the core register
section. The floating point register values are garbage in
OSF/1.2 core files. OSF5 uses different names for the register
enum list, need to handle two cases. The actual values are the
same. */
static int const core_reg_mapping[ALPHA_NUM_REGS] =
{
#ifdef NCF_REGS
#define EFL NCF_REGS
CF_V0, CF_T0, CF_T1, CF_T2, CF_T3, CF_T4, CF_T5, CF_T6,
CF_T7, CF_S0, CF_S1, CF_S2, CF_S3, CF_S4, CF_S5, CF_S6,
CF_A0, CF_A1, CF_A2, CF_A3, CF_A4, CF_A5, CF_T8, CF_T9,
CF_T10, CF_T11, CF_RA, CF_T12, CF_AT, CF_GP, CF_SP, -1,
EFL + 0, EFL + 1, EFL + 2, EFL + 3, EFL + 4, EFL + 5, EFL + 6, EFL + 7,
EFL + 8, EFL + 9, EFL + 10, EFL + 11, EFL + 12, EFL + 13, EFL + 14, EFL + 15,
EFL + 16, EFL + 17, EFL + 18, EFL + 19, EFL + 20, EFL + 21, EFL + 22, EFL + 23,
EFL + 24, EFL + 25, EFL + 26, EFL + 27, EFL + 28, EFL + 29, EFL + 30, EFL + 31,
CF_PC, -1
#else
#define EFL (EF_SIZE / 8)
EF_V0, EF_T0, EF_T1, EF_T2, EF_T3, EF_T4, EF_T5, EF_T6,
EF_T7, EF_S0, EF_S1, EF_S2, EF_S3, EF_S4, EF_S5, EF_S6,
EF_A0, EF_A1, EF_A2, EF_A3, EF_A4, EF_A5, EF_T8, EF_T9,
EF_T10, EF_T11, EF_RA, EF_T12, EF_AT, EF_GP, EF_SP, -1,
EFL + 0, EFL + 1, EFL + 2, EFL + 3, EFL + 4, EFL + 5, EFL + 6, EFL + 7,
EFL + 8, EFL + 9, EFL + 10, EFL + 11, EFL + 12, EFL + 13, EFL + 14, EFL + 15,
EFL + 16, EFL + 17, EFL + 18, EFL + 19, EFL + 20, EFL + 21, EFL + 22, EFL + 23,
EFL + 24, EFL + 25, EFL + 26, EFL + 27, EFL + 28, EFL + 29, EFL + 30, EFL + 31,
EF_PC, -1
#endif
};
for (regno = 0; regno < ALPHA_NUM_REGS; regno++)
{
if (CANNOT_FETCH_REGISTER (regno))
{
regcache_raw_supply (current_regcache, regno, NULL);
continue;
}
addr = 8 * core_reg_mapping[regno];
if (addr < 0 || addr >= core_reg_size)
{
/* ??? UNIQUE is a new addition. Don't generate an error. */
if (regno == ALPHA_UNIQUE_REGNUM)
{
regcache_raw_supply (current_regcache, regno, NULL);
continue;
}
if (bad_reg < 0)
bad_reg = regno;
}
else
{
regcache_raw_supply (current_regcache, regno, core_reg_sect + addr);
}
}
if (bad_reg >= 0)
{
error ("Register %s not found in core file.", REGISTER_NAME (bad_reg));
}
}
static void
fetch_elf_core_registers (char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
if (core_reg_size < 32 * 8)
{
error ("Core file register section too small (%u bytes).", core_reg_size);
return;
}
switch (which)
{
case 0: /* integer registers */
/* PC is in slot 32; UNIQUE is in slot 33, if present. */
alpha_supply_int_regs (-1, core_reg_sect, core_reg_sect + 31*8,
(core_reg_size >= 33 * 8
? core_reg_sect + 32*8 : NULL));
break;
case 2: /* floating-point registers */
/* FPCR is in slot 32. */
alpha_supply_fp_regs (-1, core_reg_sect, core_reg_sect + 31*8);
break;
default:
break;
}
}
/* Map gdb internal register number to a ptrace ``address''.
These ``addresses'' are defined in <sys/ptrace.h>, with
the exception of ALPHA_UNIQUE_PTRACE_ADDR. */
#ifndef ALPHA_UNIQUE_PTRACE_ADDR
#define ALPHA_UNIQUE_PTRACE_ADDR 0
#endif
CORE_ADDR
register_addr (int regno, CORE_ADDR blockend)
{
if (regno == PC_REGNUM)
return PC;
if (regno == ALPHA_UNIQUE_REGNUM)
return ALPHA_UNIQUE_PTRACE_ADDR;
if (regno < FP0_REGNUM)
return GPR_BASE + regno;
else
return FPR_BASE + regno - FP0_REGNUM;
}
int
kernel_u_size (void)
{
return (sizeof (struct user));
}
#if defined(USE_PROC_FS) || defined(HAVE_GREGSET_T)
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
/* Locate the UNIQUE value within the gregset_t. */
#ifndef ALPHA_REGSET_UNIQUE
#define ALPHA_REGSET_UNIQUE(ptr) NULL
#endif
/*
* See the comment in m68k-tdep.c regarding the utility of these functions.
*/
void
supply_gregset (gdb_gregset_t *gregsetp)
{
long *regp = ALPHA_REGSET_BASE (gregsetp);
void *unique = ALPHA_REGSET_UNIQUE (gregsetp);
/* PC is in slot 32. */
alpha_supply_int_regs (-1, regp, regp + 31, unique);
}
void
fill_gregset (gdb_gregset_t *gregsetp, int regno)
{
long *regp = ALPHA_REGSET_BASE (gregsetp);
void *unique = ALPHA_REGSET_UNIQUE (gregsetp);
/* PC is in slot 32. */
alpha_fill_int_regs (regno, regp, regp + 31, unique);
}
/*
* Now we do the same thing for floating-point registers.
* Again, see the comments in m68k-tdep.c.
*/
void
supply_fpregset (gdb_fpregset_t *fpregsetp)
{
long *regp = ALPHA_REGSET_BASE (fpregsetp);
/* FPCR is in slot 32. */
alpha_supply_fp_regs (-1, regp, regp + 31);
}
void
fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
{
long *regp = ALPHA_REGSET_BASE (fpregsetp);
/* FPCR is in slot 32. */
alpha_fill_fp_regs (regno, regp, regp + 31);
}
#endif
/* Register that we are able to handle alpha core file formats. */
static struct core_fns alpha_osf_core_fns =
{
/* This really is bfd_target_unknown_flavour. */
bfd_target_unknown_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_osf_core_registers, /* core_read_registers */
NULL /* next */
};
static struct core_fns alpha_elf_core_fns =
{
bfd_target_elf_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_elf_core_registers, /* core_read_registers */
NULL /* next */
};
void
_initialize_core_alpha (void)
{
deprecated_add_core_fns (&alpha_osf_core_fns);
deprecated_add_core_fns (&alpha_elf_core_fns);
}
|
