diff options
Diffstat (limited to 'binutils-2.25/bfd/elf32-sh64-com.c')
| -rw-r--r-- | binutils-2.25/bfd/elf32-sh64-com.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/elf32-sh64-com.c b/binutils-2.25/bfd/elf32-sh64-com.c new file mode 100644 index 00000000..a4aa1be6 --- /dev/null +++ b/binutils-2.25/bfd/elf32-sh64-com.c @@ -0,0 +1,246 @@ +/* SuperH SH64-specific support for 32-bit ELF + Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2007 + 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; +} |