1 |
24 |
jeremybenn |
/* Target-dependent code for NetBSD/sh.
|
2 |
|
|
|
3 |
|
|
Copyright (C) 2002, 2003, 2006, 2007, 2008 Free Software Foundation, Inc.
|
4 |
|
|
|
5 |
|
|
Contributed by Wasabi Systems, Inc.
|
6 |
|
|
|
7 |
|
|
This file is part of GDB.
|
8 |
|
|
|
9 |
|
|
This program is free software; you can redistribute it and/or modify
|
10 |
|
|
it under the terms of the GNU General Public License as published by
|
11 |
|
|
the Free Software Foundation; either version 3 of the License, or
|
12 |
|
|
(at your option) any later version.
|
13 |
|
|
|
14 |
|
|
This program is distributed in the hope that it will be useful,
|
15 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
16 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
17 |
|
|
GNU General Public License for more details.
|
18 |
|
|
|
19 |
|
|
You should have received a copy of the GNU General Public License
|
20 |
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
21 |
|
|
|
22 |
|
|
#include "defs.h"
|
23 |
|
|
#include "gdbcore.h"
|
24 |
|
|
#include "regcache.h"
|
25 |
|
|
#include "regset.h"
|
26 |
|
|
#include "value.h"
|
27 |
|
|
#include "osabi.h"
|
28 |
|
|
|
29 |
|
|
#include "gdb_assert.h"
|
30 |
|
|
#include "gdb_string.h"
|
31 |
|
|
|
32 |
|
|
#include "sh-tdep.h"
|
33 |
|
|
#include "shnbsd-tdep.h"
|
34 |
|
|
#include "solib-svr4.h"
|
35 |
|
|
|
36 |
|
|
/* Convert an r0-r15 register number into an offset into a ptrace
|
37 |
|
|
register structure. */
|
38 |
|
|
static const int regmap[] =
|
39 |
|
|
{
|
40 |
|
|
(20 * 4), /* r0 */
|
41 |
|
|
(19 * 4), /* r1 */
|
42 |
|
|
(18 * 4), /* r2 */
|
43 |
|
|
(17 * 4), /* r3 */
|
44 |
|
|
(16 * 4), /* r4 */
|
45 |
|
|
(15 * 4), /* r5 */
|
46 |
|
|
(14 * 4), /* r6 */
|
47 |
|
|
(13 * 4), /* r7 */
|
48 |
|
|
(12 * 4), /* r8 */
|
49 |
|
|
(11 * 4), /* r9 */
|
50 |
|
|
(10 * 4), /* r10 */
|
51 |
|
|
( 9 * 4), /* r11 */
|
52 |
|
|
( 8 * 4), /* r12 */
|
53 |
|
|
( 7 * 4), /* r13 */
|
54 |
|
|
( 6 * 4), /* r14 */
|
55 |
|
|
( 5 * 4), /* r15 */
|
56 |
|
|
};
|
57 |
|
|
|
58 |
|
|
/* Sizeof `struct reg' in <machine/reg.h>. */
|
59 |
|
|
#define SHNBSD_SIZEOF_GREGS (21 * 4)
|
60 |
|
|
|
61 |
|
|
/* Supply register REGNUM from the buffer specified by GREGS and LEN
|
62 |
|
|
in the general-purpose register set REGSET to register cache
|
63 |
|
|
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
|
64 |
|
|
|
65 |
|
|
static void
|
66 |
|
|
shnbsd_supply_gregset (const struct regset *regset,
|
67 |
|
|
struct regcache *regcache,
|
68 |
|
|
int regnum, const void *gregs, size_t len)
|
69 |
|
|
{
|
70 |
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
71 |
|
|
const gdb_byte *regs = gregs;
|
72 |
|
|
int i;
|
73 |
|
|
|
74 |
|
|
gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
|
75 |
|
|
|
76 |
|
|
if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
|
77 |
|
|
regcache_raw_supply (regcache, gdbarch_pc_regnum (gdbarch),
|
78 |
|
|
regs + (0 * 4));
|
79 |
|
|
|
80 |
|
|
if (regnum == SR_REGNUM || regnum == -1)
|
81 |
|
|
regcache_raw_supply (regcache, SR_REGNUM, regs + (1 * 4));
|
82 |
|
|
|
83 |
|
|
if (regnum == PR_REGNUM || regnum == -1)
|
84 |
|
|
regcache_raw_supply (regcache, PR_REGNUM, regs + (2 * 4));
|
85 |
|
|
|
86 |
|
|
if (regnum == MACH_REGNUM || regnum == -1)
|
87 |
|
|
regcache_raw_supply (regcache, MACH_REGNUM, regs + (3 * 4));
|
88 |
|
|
|
89 |
|
|
if (regnum == MACL_REGNUM || regnum == -1)
|
90 |
|
|
regcache_raw_supply (regcache, MACL_REGNUM, regs + (4 * 4));
|
91 |
|
|
|
92 |
|
|
for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
|
93 |
|
|
{
|
94 |
|
|
if (regnum == i || regnum == -1)
|
95 |
|
|
regcache_raw_supply (regcache, i, regs + regmap[i - R0_REGNUM]);
|
96 |
|
|
}
|
97 |
|
|
}
|
98 |
|
|
|
99 |
|
|
/* Collect register REGNUM in the general-purpose register set
|
100 |
|
|
REGSET. from register cache REGCACHE into the buffer specified by
|
101 |
|
|
GREGS and LEN. If REGNUM is -1, do this for all registers in
|
102 |
|
|
REGSET. */
|
103 |
|
|
|
104 |
|
|
static void
|
105 |
|
|
shnbsd_collect_gregset (const struct regset *regset,
|
106 |
|
|
const struct regcache *regcache,
|
107 |
|
|
int regnum, void *gregs, size_t len)
|
108 |
|
|
{
|
109 |
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
110 |
|
|
gdb_byte *regs = gregs;
|
111 |
|
|
int i;
|
112 |
|
|
|
113 |
|
|
gdb_assert (len >= SHNBSD_SIZEOF_GREGS);
|
114 |
|
|
|
115 |
|
|
if (regnum == gdbarch_pc_regnum (gdbarch) || regnum == -1)
|
116 |
|
|
regcache_raw_collect (regcache, gdbarch_pc_regnum (gdbarch),
|
117 |
|
|
regs + (0 * 4));
|
118 |
|
|
|
119 |
|
|
if (regnum == SR_REGNUM || regnum == -1)
|
120 |
|
|
regcache_raw_collect (regcache, SR_REGNUM, regs + (1 * 4));
|
121 |
|
|
|
122 |
|
|
if (regnum == PR_REGNUM || regnum == -1)
|
123 |
|
|
regcache_raw_collect (regcache, PR_REGNUM, regs + (2 * 4));
|
124 |
|
|
|
125 |
|
|
if (regnum == MACH_REGNUM || regnum == -1)
|
126 |
|
|
regcache_raw_collect (regcache, MACH_REGNUM, regs + (3 * 4));
|
127 |
|
|
|
128 |
|
|
if (regnum == MACL_REGNUM || regnum == -1)
|
129 |
|
|
regcache_raw_collect (regcache, MACL_REGNUM, regs + (4 * 4));
|
130 |
|
|
|
131 |
|
|
for (i = R0_REGNUM; i <= (R0_REGNUM + 15); i++)
|
132 |
|
|
{
|
133 |
|
|
if (regnum == i || regnum == -1)
|
134 |
|
|
regcache_raw_collect (regcache, i, regs + regmap[i - R0_REGNUM]);
|
135 |
|
|
}
|
136 |
|
|
}
|
137 |
|
|
|
138 |
|
|
/* SH register sets. */
|
139 |
|
|
|
140 |
|
|
static struct regset shnbsd_gregset =
|
141 |
|
|
{
|
142 |
|
|
NULL,
|
143 |
|
|
shnbsd_supply_gregset,
|
144 |
|
|
shnbsd_collect_gregset
|
145 |
|
|
};
|
146 |
|
|
|
147 |
|
|
/* Return the appropriate register set for the core section identified
|
148 |
|
|
by SECT_NAME and SECT_SIZE. */
|
149 |
|
|
|
150 |
|
|
const struct regset *
|
151 |
|
|
shnbsd_regset_from_core_section (struct gdbarch *gdbarch,
|
152 |
|
|
const char *sect_name, size_t sect_size)
|
153 |
|
|
{
|
154 |
|
|
if (strcmp (sect_name, ".reg") == 0 && sect_size >= SHNBSD_SIZEOF_GREGS)
|
155 |
|
|
return &shnbsd_gregset;
|
156 |
|
|
|
157 |
|
|
return NULL;
|
158 |
|
|
}
|
159 |
|
|
|
160 |
|
|
void
|
161 |
|
|
shnbsd_supply_reg (struct regcache *regcache, const char *regs, int regnum)
|
162 |
|
|
{
|
163 |
|
|
shnbsd_supply_gregset (&shnbsd_gregset, regcache, regnum,
|
164 |
|
|
regs, SHNBSD_SIZEOF_GREGS);
|
165 |
|
|
}
|
166 |
|
|
|
167 |
|
|
void
|
168 |
|
|
shnbsd_fill_reg (const struct regcache *regcache, char *regs, int regnum)
|
169 |
|
|
{
|
170 |
|
|
shnbsd_collect_gregset (&shnbsd_gregset, regcache, regnum,
|
171 |
|
|
regs, SHNBSD_SIZEOF_GREGS);
|
172 |
|
|
}
|
173 |
|
|
|
174 |
|
|
|
175 |
|
|
static void
|
176 |
|
|
shnbsd_init_abi (struct gdbarch_info info,
|
177 |
|
|
struct gdbarch *gdbarch)
|
178 |
|
|
{
|
179 |
|
|
set_gdbarch_regset_from_core_section
|
180 |
|
|
(gdbarch, shnbsd_regset_from_core_section);
|
181 |
|
|
|
182 |
|
|
set_solib_svr4_fetch_link_map_offsets
|
183 |
|
|
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
|
184 |
|
|
}
|
185 |
|
|
|
186 |
|
|
|
187 |
|
|
/* OpenBSD uses uses the traditional NetBSD core file format, even for
|
188 |
|
|
ports that use ELF. */
|
189 |
|
|
#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
|
190 |
|
|
|
191 |
|
|
static enum gdb_osabi
|
192 |
|
|
shnbsd_core_osabi_sniffer (bfd *abfd)
|
193 |
|
|
{
|
194 |
|
|
if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
|
195 |
|
|
return GDB_OSABI_NETBSD_CORE;
|
196 |
|
|
|
197 |
|
|
return GDB_OSABI_UNKNOWN;
|
198 |
|
|
}
|
199 |
|
|
|
200 |
|
|
void
|
201 |
|
|
_initialize_shnbsd_tdep (void)
|
202 |
|
|
{
|
203 |
|
|
/* BFD doesn't set a flavour for NetBSD style a.out core files. */
|
204 |
|
|
gdbarch_register_osabi_sniffer (bfd_arch_sh, bfd_target_unknown_flavour,
|
205 |
|
|
shnbsd_core_osabi_sniffer);
|
206 |
|
|
|
207 |
|
|
gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_NETBSD_ELF,
|
208 |
|
|
shnbsd_init_abi);
|
209 |
|
|
gdbarch_register_osabi (bfd_arch_sh, 0, GDB_OSABI_OPENBSD_ELF,
|
210 |
|
|
shnbsd_init_abi);
|
211 |
|
|
}
|