1 /* SuperH SH64-specific support for 32-bit ELF
2 Copyright 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
27 #include "elf32-sh64.h"
28 #include "../opcodes/sh64-opc.h"
30 static bfd_boolean sh64_address_in_cranges
31 (asection *cranges, bfd_vma, sh64_elf_crange *);
33 /* Ordering functions of a crange, for the qsort and bsearch calls and for
34 different endianness. */
37 _bfd_sh64_crange_qsort_cmpb (const void *p1, const void *p2)
39 bfd_vma a1 = bfd_getb32 (p1);
40 bfd_vma a2 = bfd_getb32 (p2);
42 /* Preserve order if there's ambiguous contents. */
44 return (char *) p1 - (char *) p2;
50 _bfd_sh64_crange_qsort_cmpl (const void *p1, const void *p2)
52 bfd_vma a1 = (bfd_vma) bfd_getl32 (p1);
53 bfd_vma a2 = (bfd_vma) bfd_getl32 (p2);
55 /* Preserve order if there's ambiguous contents. */
57 return (char *) p1 - (char *) p2;
63 _bfd_sh64_crange_bsearch_cmpb (const void *p1, const void *p2)
65 bfd_vma a1 = *(bfd_vma *) p1;
66 bfd_vma a2 = (bfd_vma) bfd_getb32 (p2);
68 = (bfd_size_type) bfd_getb32 (SH64_CRANGE_CR_SIZE_OFFSET + (char *) p2);
78 _bfd_sh64_crange_bsearch_cmpl (const void *p1, const void *p2)
80 bfd_vma a1 = *(bfd_vma *) p1;
81 bfd_vma a2 = (bfd_vma) bfd_getl32 (p2);
83 = (bfd_size_type) bfd_getl32 (SH64_CRANGE_CR_SIZE_OFFSET + (char *) p2);
92 /* Check whether a specific address is specified within a .cranges
93 section. Return FALSE if not found, and TRUE if found, and the region
94 filled into RANGEP if non-NULL. */
97 sh64_address_in_cranges (asection *cranges, bfd_vma addr,
98 sh64_elf_crange *rangep)
100 bfd_byte *cranges_contents;
101 bfd_byte *found_rangep;
102 bfd_size_type cranges_size = cranges->size;
104 /* If the size is not a multiple of the cranges entry size, then
105 something is badly wrong. */
106 if ((cranges_size % SH64_CRANGE_SIZE) != 0)
109 /* If this section has relocations, then we can't do anything sane. */
110 if (bfd_get_section_flags (cranges->owner, cranges) & SEC_RELOC)
113 /* Has some kind soul (or previous call) left processed, sorted contents
115 if ((bfd_get_section_flags (cranges->owner, cranges) & SEC_IN_MEMORY)
116 && elf_section_data (cranges)->this_hdr.sh_type == SHT_SH5_CR_SORTED)
117 cranges_contents = cranges->contents;
120 if (!bfd_malloc_and_get_section (cranges->owner, cranges,
125 if (elf_section_data (cranges)->this_hdr.sh_type
126 != SHT_SH5_CR_SORTED)
127 /* Nope. Lets sort it. */
128 qsort (cranges_contents, cranges_size / SH64_CRANGE_SIZE,
130 bfd_big_endian (cranges->owner)
131 ? _bfd_sh64_crange_qsort_cmpb : _bfd_sh64_crange_qsort_cmpl);
133 /* Let's keep it around. */
134 cranges->contents = cranges_contents;
135 bfd_set_section_flags (cranges->owner, cranges,
136 bfd_get_section_flags (cranges->owner, cranges)
139 /* It's sorted now. */
140 elf_section_data (cranges)->this_hdr.sh_type = SHT_SH5_CR_SORTED;
143 /* Try and find a matching range. */
145 = bsearch (&addr, cranges_contents, cranges_size / SH64_CRANGE_SIZE,
147 bfd_big_endian (cranges->owner)
148 ? _bfd_sh64_crange_bsearch_cmpb
149 : _bfd_sh64_crange_bsearch_cmpl);
151 /* Fill in a few return values if we found a matching range. */
154 enum sh64_elf_cr_type cr_type
155 = bfd_get_16 (cranges->owner,
156 SH64_CRANGE_CR_TYPE_OFFSET + found_rangep);
158 = bfd_get_32 (cranges->owner,
159 SH64_CRANGE_CR_ADDR_OFFSET
160 + (char *) found_rangep);
161 bfd_size_type cr_size
162 = bfd_get_32 (cranges->owner,
163 SH64_CRANGE_CR_SIZE_OFFSET
164 + (char *) found_rangep);
166 rangep->cr_addr = cr_addr;
167 rangep->cr_size = cr_size;
168 rangep->cr_type = cr_type;
173 /* There is a .cranges section, but it does not have a descriptor
174 matching this address. */
178 if (cranges_contents != NULL)
179 free (cranges_contents);
183 /* Determine what ADDR points to in SEC, and fill in a range descriptor in
184 *RANGEP if it's non-NULL. */
186 enum sh64_elf_cr_type
187 sh64_get_contents_type (asection *sec, bfd_vma addr, sh64_elf_crange *rangep)
191 /* Fill in the range with the boundaries of the section as a default. */
192 if (bfd_get_flavour (sec->owner) == bfd_target_elf_flavour
193 && elf_elfheader (sec->owner)->e_type == ET_EXEC)
195 rangep->cr_addr = bfd_get_section_vma (sec->owner, sec);
196 rangep->cr_size = sec->size;
197 rangep->cr_type = CRT_NONE;
202 /* If none of the pertinent bits are set, then it's a SHcompact (or at
203 least not SHmedia). */
204 if ((elf_section_data (sec)->this_hdr.sh_flags
205 & (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED)) == 0)
207 enum sh64_elf_cr_type cr_type
208 = ((bfd_get_section_flags (sec->owner, sec) & SEC_CODE) != 0
209 ? CRT_SH5_ISA16 : CRT_DATA);
210 rangep->cr_type = cr_type;
214 /* If only the SHF_SH5_ISA32 bit is set, then we have SHmedia. */
215 if ((elf_section_data (sec)->this_hdr.sh_flags
216 & (SHF_SH5_ISA32 | SHF_SH5_ISA32_MIXED)) == SHF_SH5_ISA32)
218 rangep->cr_type = CRT_SH5_ISA32;
219 return CRT_SH5_ISA32;
222 /* Otherwise, we have to look up the .cranges section. */
223 cranges = bfd_get_section_by_name (sec->owner, SH64_CRANGES_SECTION_NAME);
226 /* A mixed section but there's no .cranges section. This is probably
227 bad input; it does not comply to specs. */
230 /* If this call fails, we will still have CRT_NONE in rangep->cr_type
231 and that will be suitable to return. */
232 sh64_address_in_cranges (cranges, addr, rangep);
234 return rangep->cr_type;
237 /* This is a simpler exported interface for the benefit of gdb et al. */
240 sh64_address_is_shmedia (asection *sec, bfd_vma addr)
242 sh64_elf_crange dummy;
243 return sh64_get_contents_type (sec, addr, &dummy) == CRT_SH5_ISA32;