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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [bfd/] [elf32-sh64-com.c] - Rev 183
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/* 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; }
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