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
|
/* SuperH SH64-specific support for 32-bit ELF
Copyright (C) 2000-2016 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#define SH64_ELF
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/sh.h"
#include "elf32-sh64.h"
#include "../opcodes/sh64-opc.h"
static bfd_boolean sh64_address_in_cranges
(asection *cranges, bfd_vma, sh64_elf_crange *);
/* Ordering functions of a crange, for the qsort and bsearch calls and for
different endianness. */
int
_bfd_sh64_crange_qsort_cmpb (const void *p1, const void *p2)
{
bfd_vma a1 = bfd_getb32 (p1);
bfd_vma a2 = bfd_getb32 (p2);
/* Preserve order if there's ambiguous contents. */
if (a1 == a2)
return (char *) p1 - (char *) p2;
return a1 - a2;
}
int
_bfd_sh64_crange_qsort_cmpl (const void *p1, const void *p2)
{
bfd_vma a1 = (bfd_vma) bfd_getl32 (p1);
bfd_vma a2 = (bfd_vma) bfd_getl32 (p2);
/* Preserve order if there's ambiguous contents. */
if (a1 == a2)
return (char *) p1 - (char *) p2;
return a1 - a2;
}
int
_bfd_sh64_crange_bsearch_cmpb (const void *p1, const void *p2)
{
bfd_vma a1 = *(bfd_vma *) p1;
bfd_vma a2 = (bfd_vma) bfd_getb32 (p2);
bfd_size_type size
= (bfd_size_type) bfd_getb32 (SH64_CRANGE_CR_SIZE_OFFSET + (char *) p2);
if (a1 >= a2 + size)
return 1;
if (a1 < a2)
return -1;
return 0;
}
int
_bfd_sh64_crange_bsearch_cmpl (const void *p1, const void *p2)
{
bfd_vma a1 = *(bfd_vma *) p1;
bfd_vma a2 = (bfd_vma) bfd_getl32 (p2);
bfd_size_type size
= (bfd_size_type) bfd_getl32 (SH64_CRANGE_CR_SIZE_OFFSET + (char *) p2);
if (a1 >= a2 + size)
return 1;
if (a1 < a2)
return -1;
return 0;
}
/* Check whether a specific address is specified within a .cranges
section. Return FALSE if not found, and TRUE if found, and the region
filled into RANGEP if non-NULL. */
static bfd_boolean
sh64_address_in_cranges (asection *cranges, bfd_vma addr,
sh64_elf_crange *rangep)
{
bfd_byte *cranges_contents;
bfd_byte *found_rangep;
bfd_size_type cranges_size = cranges->size;
/* If the size is not a multiple of the cranges entry size, then
something is badly wrong. */
if ((cranges_size % SH64_CRANGE_SIZE) != 0)
return FALSE;
/* If this section has relocations, then we can't do anything sane. */
if (bfd_get_section_flags (cranges->owner, cranges) & SEC_RELOC)
return FALSE;
/* Has some kind soul (or previous call) left processed, sorted contents
for us? */
if ((bfd_get_section_flags (cranges->owner, cranges) & SEC_IN_MEMORY)
&& elf_section_data (cranges)->this_hdr.sh_type == SHT_SH5_CR_SORTED)
cranges_contents = cranges->contents;
else
{
if (!bfd_malloc_and_get_section (cranges->owner, cranges,
&cranges_contents))
goto error_return;
/* Is it sorted? */
if (elf_section_data (cranges)->this_hdr.sh_type
!= SHT_SH5_CR_SORTED)
/* Nope. Lets sort it. */
qsort (cranges_contents, cranges_size / SH64_CRANGE_SIZE,
SH64_CRANGE_SIZE,
bfd_big_endian (cranges->owner)
? _bfd_sh64_crange_qsort_cmpb : _bfd_sh64_crange_qsort_cmpl);
/* Let's keep it around. */
cranges->contents = cranges_contents;
bfd_set_section_flags (cranges->owner, cranges,
bfd_get_section_flags (cranges->owner, cranges)
| SEC_IN_MEMORY);
/* It's sorted now. */
elf_section_data (cranges)->this_hdr.sh_type = SHT_SH5_CR_SORTED;
}
/* Try and find a matching range. */
found_rangep
= bsearch (&addr, cranges_contents, cranges_size / SH64_CRANGE_SIZE,
SH64_CRANGE_SIZE,
bfd_big_endian (cranges->owner)
? _bfd_sh64_crange_bsearch_cmpb
: _bfd_sh64_crange_bsearch_cmpl);
/* Fill in a few return values if we found a matching range. */
if (found_rangep)
{
enum sh64_elf_cr_type cr_type
= bfd_get_16 (cranges->owner,
SH64_CRANGE_CR_TYPE_OFFSET + found_rangep);
bfd_vma cr_addr
= bfd_get_32 (cranges->owner,
SH64_CRANGE_CR_ADDR_OFFSET
+ (char *) found_rangep);
bfd_size_type cr_size
= bfd_get_32 (cranges->owner,
SH64_CRANGE_CR_SIZE_OFFSET
+ (char *) found_rangep);
rangep->cr_addr = cr_addr;
rangep->cr_size = cr_size;
rangep->cr_type = cr_type;
return TRUE;
}
/* There is a .cranges section, but it does not have a descriptor
matching this address. */
return FALSE;
error_return:
if (cranges_contents != NULL)
free (cranges_contents);
return FALSE;
}
/* Determine what ADDR points to in SEC, and fill in a range descriptor in
*RANGEP if it's non-NULL. */
enum sh64_elf_cr_type
sh64_get_contents_type (asection *sec, bfd_vma addr, sh64_elf_crange *rangep)
{
asection *cranges;
/* Fill in the range with the boundaries of the section as a default. */
if (bfd_get_flavour (sec->owner) == bfd_target_elf_flavour
&& elf_elfheader (sec->owner)->e_type == ET_EXEC)
{
rangep->cr_addr = bfd_get_section_vma (sec->owner, sec);
rangep->cr_size = sec->size;
rangep->cr_type = CRT_NONE;
}
else
return FALSE;
/* If none of the pertinent bits are set, then it's a SHcompact (or at
least not SHmedia). */
if ((elf_section_data (sec)->this_hdr.sh_flags
& (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED)) == 0)
{
enum sh64_elf_cr_type cr_type
= ((bfd_get_section_flags (sec->owner, sec) & SEC_CODE) != 0
? CRT_SH5_ISA16 : CRT_DATA);
rangep->cr_type = cr_type;
return cr_type;
}
/* If only the SHF_SH5_ISA32 bit is set, then we have SHmedia. */
if ((elf_section_data (sec)->this_hdr.sh_flags
& (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED)) == SHF_SH5_ISA32)
{
rangep->cr_type = CRT_SH5_ISA32;
return CRT_SH5_ISA32;
}
/* Otherwise, we have to look up the .cranges section. */
cranges = bfd_get_section_by_name (sec->owner, SH64_CRANGES_SECTION_NAME);
if (cranges == NULL)
/* A mixed section but there's no .cranges section. This is probably
bad input; it does not comply to specs. */
return CRT_NONE;
/* If this call fails, we will still have CRT_NONE in rangep->cr_type
and that will be suitable to return. */
sh64_address_in_cranges (cranges, addr, rangep);
return rangep->cr_type;
}
/* This is a simpler exported interface for the benefit of gdb et al. */
bfd_boolean
sh64_address_is_shmedia (asection *sec, bfd_vma addr)
{
sh64_elf_crange dummy;
return sh64_get_contents_type (sec, addr, &dummy) == CRT_SH5_ISA32;
}
|
