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/* Intel i860 specific support for 32-bit ELF. Copyright 1993, 1995, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. Full i860 support contributed by Jason Eckhardt <jle@cygnus.com>. 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. */ #include "sysdep.h" #include "bfd.h" #include "libbfd.h" #include "elf-bfd.h" #include "elf/i860.h" /* special_function for R_860_PC26 relocation. */ static bfd_reloc_status_type i860_howto_pc26_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, asymbol *symbol, void *data ATTRIBUTE_UNUSED, asection *input_section, bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) { bfd_vma insn; bfd_vma relocation; bfd_byte *addr; if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 && (! reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) { reloc_entry->address += input_section->output_offset; return bfd_reloc_ok; } /* Used elf32-mips.c as an example. */ if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) return bfd_reloc_undefined; if (bfd_is_com_section (symbol->section)) relocation = 0; else relocation = symbol->value; relocation += symbol->section->output_section->vma; relocation += symbol->section->output_offset; relocation += reloc_entry->addend; if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) return bfd_reloc_outofrange; /* Adjust for PC-relative relocation. */ relocation -= (input_section->output_section->vma + input_section->output_offset + reloc_entry->address + 4); /* Check for target out of range. */ if ((bfd_signed_vma)relocation > (0x3ffffff << 2) || (bfd_signed_vma)relocation < (-0x4000000 << 2)) return bfd_reloc_outofrange; addr = (bfd_byte *) data + reloc_entry->address; insn = bfd_get_32 (abfd, addr); relocation >>= reloc_entry->howto->rightshift; insn = (insn & ~reloc_entry->howto->dst_mask) | (relocation & reloc_entry->howto->dst_mask); bfd_put_32 (abfd, (bfd_vma) insn, addr); return bfd_reloc_ok; } /* special_function for R_860_PC16 relocation. */ static bfd_reloc_status_type i860_howto_pc16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, void *data, asection *input_section, bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) { bfd_vma insn; bfd_vma relocation; bfd_byte *addr; if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 && (! reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) { reloc_entry->address += input_section->output_offset; return bfd_reloc_ok; } /* Used elf32-mips.c as an example. */ if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) return bfd_reloc_undefined; if (bfd_is_com_section (symbol->section)) relocation = 0; else relocation = symbol->value; relocation += symbol->section->output_section->vma; relocation += symbol->section->output_offset; relocation += reloc_entry->addend; if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) return bfd_reloc_outofrange; /* Adjust for PC-relative relocation. */ relocation -= (input_section->output_section->vma + input_section->output_offset + reloc_entry->address + 4); /* Check for target out of range. */ if ((bfd_signed_vma)relocation > (0x7fff << 2) || (bfd_signed_vma)relocation < (-0x8000 << 2)) return bfd_reloc_outofrange; addr = (bfd_byte *) data + reloc_entry->address; insn = bfd_get_32 (abfd, addr); relocation >>= reloc_entry->howto->rightshift; relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff)) & reloc_entry->howto->dst_mask; insn = (insn & ~reloc_entry->howto->dst_mask) | relocation; bfd_put_32 (abfd, (bfd_vma) insn, addr); return bfd_reloc_ok; } /* special_function for R_860_HIGHADJ relocation. */ static bfd_reloc_status_type i860_howto_highadj_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, void *data, asection *input_section, bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) { bfd_vma insn; bfd_vma relocation; bfd_byte *addr; if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 && (! reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) { reloc_entry->address += input_section->output_offset; return bfd_reloc_ok; } /* Used elf32-mips.c as an example. */ if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) return bfd_reloc_undefined; if (bfd_is_com_section (symbol->section)) relocation = 0; else relocation = symbol->value; relocation += symbol->section->output_section->vma; relocation += symbol->section->output_offset; relocation += reloc_entry->addend; relocation += 0x8000; if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) return bfd_reloc_outofrange; addr = (bfd_byte *) data + reloc_entry->address; insn = bfd_get_32 (abfd, addr); relocation = ((relocation >> 16) & 0xffff); insn = (insn & 0xffff0000) | relocation; bfd_put_32 (abfd, (bfd_vma) insn, addr); return bfd_reloc_ok; } /* special_function for R_860_SPLITn relocations. */ static bfd_reloc_status_type i860_howto_splitn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, void *data, asection *input_section, bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) { bfd_vma insn; bfd_vma relocation; bfd_byte *addr; if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 && (! reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) { reloc_entry->address += input_section->output_offset; return bfd_reloc_ok; } /* Used elf32-mips.c as an example. */ if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) return bfd_reloc_undefined; if (bfd_is_com_section (symbol->section)) relocation = 0; else relocation = symbol->value; relocation += symbol->section->output_section->vma; relocation += symbol->section->output_offset; relocation += reloc_entry->addend; if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) return bfd_reloc_outofrange; addr = (bfd_byte *) data + reloc_entry->address; insn = bfd_get_32 (abfd, addr); relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff)) & reloc_entry->howto->dst_mask; insn = (insn & ~reloc_entry->howto->dst_mask) | relocation; bfd_put_32 (abfd, (bfd_vma) insn, addr); return bfd_reloc_ok; } /* This howto table is preliminary. */ static reloc_howto_type elf32_i860_howto_table [] = { /* This relocation does nothing. */ HOWTO (R_860_NONE, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_NONE", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ FALSE), /* pcrel_offset */ /* A 32-bit absolute relocation. */ HOWTO (R_860_32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_32", /* name */ FALSE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_COPY, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_COPY", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_GLOB_DAT, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_GLOB_DAT", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_JUMP_SLOT, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_JUMP_SLOT", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_RELATIVE, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_RELATIVE", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ /* A 26-bit PC-relative relocation. */ HOWTO (R_860_PC26, /* type */ 2, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 26, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ i860_howto_pc26_reloc, /* special_function */ "R_860_PC26", /* name */ FALSE, /* partial_inplace */ 0x3ffffff, /* src_mask */ 0x3ffffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_PLT26, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 26, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_PLT26", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ TRUE), /* pcrel_offset */ /* A 16-bit PC-relative relocation. */ HOWTO (R_860_PC16, /* type */ 2, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ i860_howto_pc16_reloc, /* special_function */ "R_860_PC16", /* name */ FALSE, /* partial_inplace */ 0x1f07ff, /* src_mask */ 0x1f07ff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_LOW0, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOW0", /* name */ FALSE, /* partial_inplace */ 0xffff, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_SPLIT0, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ i860_howto_splitn_reloc, /* special_function */ "R_860_SPLIT0", /* name */ FALSE, /* partial_inplace */ 0x1f07ff, /* src_mask */ 0x1f07ff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_LOW1, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOW1", /* name */ FALSE, /* partial_inplace */ 0xfffe, /* src_mask */ 0xfffe, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_SPLIT1, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ i860_howto_splitn_reloc, /* special_function */ "R_860_SPLIT1", /* name */ FALSE, /* partial_inplace */ 0x1f07fe, /* src_mask */ 0x1f07fe, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_LOW2, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOW2", /* name */ FALSE, /* partial_inplace */ 0xfffc, /* src_mask */ 0xfffc, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_SPLIT2, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ i860_howto_splitn_reloc, /* special_function */ "R_860_SPLIT2", /* name */ FALSE, /* partial_inplace */ 0x1f07fc, /* src_mask */ 0x1f07fc, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_LOW3, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOW3", /* name */ FALSE, /* partial_inplace */ 0xfff8, /* src_mask */ 0xfff8, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_LOGOT0, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOGOT0", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_SPGOT0, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_SPGOT0", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_LOGOT1, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOGOT1", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_SPGOT1, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_SPGOT1", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_LOGOTOFF0, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOGOTOFF0", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_SPGOTOFF0, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_SPGOTOFF0", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_LOGOTOFF1, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOGOTOFF1", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_SPGOTOFF1, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_SPGOTOFF1", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_LOGOTOFF2, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOGOTOFF2", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_LOGOTOFF3, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOGOTOFF3", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_LOPC, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_LOPC", /* name */ FALSE, /* partial_inplace */ 0xffff, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_HIGHADJ, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ i860_howto_highadj_reloc, /* special_function */ "R_860_HIGHADJ", /* name */ FALSE, /* partial_inplace */ 0xffff, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_HAGOT, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_HAGOT", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_HAGOTOFF, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_HAGOTOFF", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_HAPC, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_HAPC", /* name */ FALSE, /* partial_inplace */ 0xffff, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_HIGH, /* type */ 16, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_HIGH", /* name */ FALSE, /* partial_inplace */ 0xffff, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ HOWTO (R_860_HIGOT, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_HIGOT", /* name */ FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ HOWTO (R_860_HIGOTOFF, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_860_HIGOTOFF", /* name */ TRUE, /* partial_inplace */ 0xffffffff, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ }; static unsigned char elf_code_to_howto_index[R_860_max + 1]; static reloc_howto_type * lookup_howto (unsigned int rtype) { static int initialized = 0; int i; int howto_tbl_size = (int) (sizeof (elf32_i860_howto_table) / sizeof (elf32_i860_howto_table[0])); if (! initialized) { initialized = 1; memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index)); for (i = 0; i < howto_tbl_size; i++) elf_code_to_howto_index[elf32_i860_howto_table[i].type] = i; } BFD_ASSERT (rtype <= R_860_max); i = elf_code_to_howto_index[rtype]; if (i >= howto_tbl_size) return 0; return elf32_i860_howto_table + i; } /* Given a BFD reloc, return the matching HOWTO structure. */ static reloc_howto_type * elf32_i860_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) { unsigned int rtype; switch (code) { case BFD_RELOC_NONE: rtype = R_860_NONE; break; case BFD_RELOC_32: rtype = R_860_32; break; case BFD_RELOC_860_COPY: rtype = R_860_COPY; break; case BFD_RELOC_860_GLOB_DAT: rtype = R_860_GLOB_DAT; break; case BFD_RELOC_860_JUMP_SLOT: rtype = R_860_JUMP_SLOT; break; case BFD_RELOC_860_RELATIVE: rtype = R_860_RELATIVE; break; case BFD_RELOC_860_PC26: rtype = R_860_PC26; break; case BFD_RELOC_860_PLT26: rtype = R_860_PLT26; break; case BFD_RELOC_860_PC16: rtype = R_860_PC16; break; case BFD_RELOC_860_LOW0: rtype = R_860_LOW0; break; case BFD_RELOC_860_SPLIT0: rtype = R_860_SPLIT0; break; case BFD_RELOC_860_LOW1: rtype = R_860_LOW1; break; case BFD_RELOC_860_SPLIT1: rtype = R_860_SPLIT1; break; case BFD_RELOC_860_LOW2: rtype = R_860_LOW2; break; case BFD_RELOC_860_SPLIT2: rtype = R_860_SPLIT2; break; case BFD_RELOC_860_LOW3: rtype = R_860_LOW3; break; case BFD_RELOC_860_LOGOT0: rtype = R_860_LOGOT0; break; case BFD_RELOC_860_SPGOT0: rtype = R_860_SPGOT0; break; case BFD_RELOC_860_LOGOT1: rtype = R_860_LOGOT1; break; case BFD_RELOC_860_SPGOT1: rtype = R_860_SPGOT1; break; case BFD_RELOC_860_LOGOTOFF0: rtype = R_860_LOGOTOFF0; break; case BFD_RELOC_860_SPGOTOFF0: rtype = R_860_SPGOTOFF0; break; case BFD_RELOC_860_LOGOTOFF1: rtype = R_860_LOGOTOFF1; break; case BFD_RELOC_860_SPGOTOFF1: rtype = R_860_SPGOTOFF1; break; case BFD_RELOC_860_LOGOTOFF2: rtype = R_860_LOGOTOFF2; break; case BFD_RELOC_860_LOGOTOFF3: rtype = R_860_LOGOTOFF3; break; case BFD_RELOC_860_LOPC: rtype = R_860_LOPC; break; case BFD_RELOC_860_HIGHADJ: rtype = R_860_HIGHADJ; break; case BFD_RELOC_860_HAGOT: rtype = R_860_HAGOT; break; case BFD_RELOC_860_HAGOTOFF: rtype = R_860_HAGOTOFF; break; case BFD_RELOC_860_HAPC: rtype = R_860_HAPC; break; case BFD_RELOC_860_HIGH: rtype = R_860_HIGH; break; case BFD_RELOC_860_HIGOT: rtype = R_860_HIGOT; break; case BFD_RELOC_860_HIGOTOFF: rtype = R_860_HIGOTOFF; break; default: rtype = 0; break; } return lookup_howto (rtype); } static reloc_howto_type * elf32_i860_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) { unsigned int i; for (i = 0; i < (sizeof (elf32_i860_howto_table) / sizeof (elf32_i860_howto_table[0])); i++) if (elf32_i860_howto_table[i].name != NULL && strcasecmp (elf32_i860_howto_table[i].name, r_name) == 0) return &elf32_i860_howto_table[i]; return NULL; } /* Given a ELF reloc, return the matching HOWTO structure. */ static void elf32_i860_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, Elf_Internal_Rela *elf_reloc) { bfd_reloc->howto = lookup_howto ((unsigned) ELF32_R_TYPE (elf_reloc->r_info)); } /* Specialized relocation handler for R_860_SPLITn. These relocations involves a 16-bit field that is split into two contiguous parts. */ static bfd_reloc_status_type elf32_i860_relocate_splitn (bfd *input_bfd, Elf_Internal_Rela *rello, bfd_byte *contents, bfd_vma value) { bfd_vma insn; reloc_howto_type *howto; howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); insn = bfd_get_32 (input_bfd, contents + rello->r_offset); /* Relocate. */ value += rello->r_addend; /* Separate the fields and insert. */ value = (((value & 0xf800) << 5) | (value & 0x7ff)) & howto->dst_mask; insn = (insn & ~howto->dst_mask) | value; bfd_put_32 (input_bfd, insn, contents + rello->r_offset); return bfd_reloc_ok; } /* Specialized relocation handler for R_860_PC16. This relocation involves a 16-bit, PC-relative field that is split into two contiguous parts. */ static bfd_reloc_status_type elf32_i860_relocate_pc16 (bfd *input_bfd, asection *input_section, Elf_Internal_Rela *rello, bfd_byte *contents, bfd_vma value) { bfd_vma insn; reloc_howto_type *howto; howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); insn = bfd_get_32 (input_bfd, contents + rello->r_offset); /* Adjust for PC-relative relocation. */ value -= (input_section->output_section->vma + input_section->output_offset); value -= rello->r_offset; /* Relocate. */ value += rello->r_addend; /* Adjust the value by 4, then separate the fields and insert. */ value = (value - 4) >> howto->rightshift; value = (((value & 0xf800) << 5) | (value & 0x7ff)) & howto->dst_mask; insn = (insn & ~howto->dst_mask) | value; bfd_put_32 (input_bfd, insn, contents + rello->r_offset); return bfd_reloc_ok; } /* Specialized relocation handler for R_860_PC26. This relocation involves a 26-bit, PC-relative field which must be adjusted by 4. */ static bfd_reloc_status_type elf32_i860_relocate_pc26 (bfd *input_bfd, asection *input_section, Elf_Internal_Rela *rello, bfd_byte *contents, bfd_vma value) { bfd_vma insn; reloc_howto_type *howto; howto = lookup_howto ((unsigned) ELF32_R_TYPE (rello->r_info)); insn = bfd_get_32 (input_bfd, contents + rello->r_offset); /* Adjust for PC-relative relocation. */ value -= (input_section->output_section->vma + input_section->output_offset); value -= rello->r_offset; /* Relocate. */ value += rello->r_addend; /* Adjust value by 4 and insert the field. */ value = ((value - 4) >> howto->rightshift) & howto->dst_mask; insn = (insn & ~howto->dst_mask) | value; bfd_put_32 (input_bfd, insn, contents + rello->r_offset); return bfd_reloc_ok; } /* Specialized relocation handler for R_860_HIGHADJ. */ static bfd_reloc_status_type elf32_i860_relocate_highadj (bfd *input_bfd, Elf_Internal_Rela *rel, bfd_byte *contents, bfd_vma value) { bfd_vma insn; insn = bfd_get_32 (input_bfd, contents + rel->r_offset); value += rel->r_addend; value += 0x8000; value = ((value >> 16) & 0xffff); insn = (insn & 0xffff0000) | value; bfd_put_32 (input_bfd, insn, contents + rel->r_offset); return bfd_reloc_ok; } /* Perform a single relocation. By default we use the standard BFD routines. However, we handle some specially. */ static bfd_reloc_status_type i860_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, asection *input_section, bfd_byte *contents, Elf_Internal_Rela *rel, bfd_vma relocation) { return _bfd_final_link_relocate (howto, input_bfd, input_section, contents, rel->r_offset, relocation, rel->r_addend); } /* Relocate an i860 ELF section. This is boiler-plate code copied from fr30. The RELOCATE_SECTION function is called by the new ELF backend linker to handle the relocations for a section. The relocs are always passed as Rela structures; if the section actually uses Rel structures, the r_addend field will always be zero. This function is responsible for adjusting the section contents as necessary, and (if using Rela relocs and generating a relocatable output file) adjusting the reloc addend as necessary. This function does not have to worry about setting the reloc address or the reloc symbol index. LOCAL_SYMS is a pointer to the swapped in local symbols. LOCAL_SECTIONS is an array giving the section in the input file corresponding to the st_shndx field of each local symbol. The global hash table entry for the global symbols can be found via elf_sym_hashes (input_bfd). When generating relocatable output, this function must handle STB_LOCAL/STT_SECTION symbols specially. The output symbol is going to be the section symbol corresponding to the output section, which means that the addend must be adjusted accordingly. */ static bfd_boolean elf32_i860_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, struct bfd_link_info *info, bfd *input_bfd, asection *input_section, bfd_byte *contents, Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, asection **local_sections) { Elf_Internal_Shdr *symtab_hdr; struct elf_link_hash_entry **sym_hashes; Elf_Internal_Rela *rel; Elf_Internal_Rela *relend; symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; sym_hashes = elf_sym_hashes (input_bfd); relend = relocs + input_section->reloc_count; for (rel = relocs; rel < relend; rel ++) { reloc_howto_type * howto; unsigned long r_symndx; Elf_Internal_Sym * sym; asection * sec; struct elf_link_hash_entry * h; bfd_vma relocation; bfd_reloc_status_type r; const char * name = NULL; int r_type; r_type = ELF32_R_TYPE (rel->r_info); r_symndx = ELF32_R_SYM (rel->r_info); howto = lookup_howto ((unsigned) ELF32_R_TYPE (rel->r_info)); h = NULL; sym = NULL; sec = NULL; if (r_symndx < symtab_hdr->sh_info) { sym = local_syms + r_symndx; sec = local_sections [r_symndx]; relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name); name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; } else { bfd_boolean unresolved_reloc, warned; RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, r_symndx, symtab_hdr, sym_hashes, h, sec, relocation, unresolved_reloc, warned); } if (sec != NULL && elf_discarded_section (sec)) { /* For relocs against symbols from removed linkonce sections, or sections discarded by a linker script, we just want the section contents zeroed. Avoid any special processing. */ _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); rel->r_info = 0; rel->r_addend = 0; continue; } if (info->relocatable) continue; switch (r_type) { default: r = i860_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation); break; case R_860_HIGHADJ: r = elf32_i860_relocate_highadj (input_bfd, rel, contents, relocation); break; case R_860_PC16: r = elf32_i860_relocate_pc16 (input_bfd, input_section, rel, contents, relocation); break; case R_860_PC26: r = elf32_i860_relocate_pc26 (input_bfd, input_section, rel, contents, relocation); break; case R_860_SPLIT0: case R_860_SPLIT1: case R_860_SPLIT2: r = elf32_i860_relocate_splitn (input_bfd, rel, contents, relocation); break; /* We do not yet handle GOT/PLT/Dynamic relocations. */ case R_860_COPY: case R_860_GLOB_DAT: case R_860_JUMP_SLOT: case R_860_RELATIVE: case R_860_PLT26: case R_860_LOGOT0: case R_860_SPGOT0: case R_860_LOGOT1: case R_860_SPGOT1: case R_860_LOGOTOFF0: case R_860_SPGOTOFF0: case R_860_LOGOTOFF1: case R_860_SPGOTOFF1: case R_860_LOGOTOFF2: case R_860_LOGOTOFF3: case R_860_LOPC: case R_860_HAGOT: case R_860_HAGOTOFF: case R_860_HAPC: case R_860_HIGOT: case R_860_HIGOTOFF: r = bfd_reloc_notsupported; break; } if (r != bfd_reloc_ok) { const char * msg = (const char *) NULL; switch (r) { case bfd_reloc_overflow: r = info->callbacks->reloc_overflow (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, input_bfd, input_section, rel->r_offset); break; case bfd_reloc_undefined: r = info->callbacks->undefined_symbol (info, name, input_bfd, input_section, rel->r_offset, TRUE); break; case bfd_reloc_outofrange: msg = _("internal error: out of range error"); break; case bfd_reloc_notsupported: msg = _("internal error: unsupported relocation error"); break; case bfd_reloc_dangerous: msg = _("internal error: dangerous relocation"); break; default: msg = _("internal error: unknown error"); break; } if (msg) r = info->callbacks->warning (info, msg, name, input_bfd, input_section, rel->r_offset); if (! r) return FALSE; } } return TRUE; } /* Return whether a symbol name implies a local label. SVR4/860 compilers generate labels of the form ".ep.function_name" to denote the end of a function prolog. These should be local. ??? Do any other SVR4 compilers have this convention? If so, this should be added to the generic routine. */ static bfd_boolean elf32_i860_is_local_label_name (bfd *abfd, const char *name) { if (name[0] == '.' && name[1] == 'e' && name[2] == 'p' && name[3] == '.') return TRUE; return _bfd_elf_is_local_label_name (abfd, name); } #define TARGET_BIG_SYM bfd_elf32_i860_vec #define TARGET_BIG_NAME "elf32-i860" #define TARGET_LITTLE_SYM bfd_elf32_i860_little_vec #define TARGET_LITTLE_NAME "elf32-i860-little" #define ELF_ARCH bfd_arch_i860 #define ELF_MACHINE_CODE EM_860 #define ELF_MAXPAGESIZE 4096 #define elf_backend_rela_normal 1 #define elf_info_to_howto_rel NULL #define elf_info_to_howto elf32_i860_info_to_howto_rela #define elf_backend_relocate_section elf32_i860_relocate_section #define bfd_elf32_bfd_reloc_type_lookup elf32_i860_reloc_type_lookup #define bfd_elf32_bfd_reloc_name_lookup elf32_i860_reloc_name_lookup #define bfd_elf32_bfd_is_local_label_name elf32_i860_is_local_label_name #include "elf32-target.h"
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