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/* BFD back-end for OpenRISC 1000 COFF binaries.
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Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2011, 2012
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Free Software Foundation, Inc.
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Contributed by Ivan Guzvinec <ivang@opencores.org>
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "coff/or32.h"
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#include "coff/internal.h"
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static bfd_reloc_status_type or32_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
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#define INSERT_HWORD(WORD,HWORD) \
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(((WORD) & 0xffff0000) | ((HWORD)& 0x0000ffff))
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#define EXTRACT_HWORD(WORD) \
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#define SIGN_EXTEND_HWORD(HWORD) \
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((HWORD) & 0x8000 ? (HWORD)|(~0xffffL) : (HWORD))
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#define INSERT_JUMPTARG(WORD,JT) \
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(((WORD) & 0xfc000000) | ((JT)& 0x03ffffff))
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#define EXTRACT_JUMPTARG(WORD) \
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#define SIGN_EXTEND_JUMPTARG(JT) \
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((JT) & 0x04000000 ? (JT)|(~0x03ffffffL) : (JT))
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/* Provided the symbol, returns the value reffed. */
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get_symbol_value (asymbol *symbol)
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if (bfd_is_com_section (symbol->section))
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relocation = symbol->value +
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symbol->section->output_section->vma +
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symbol->section->output_offset;
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/* This function is in charge of performing all the or32 relocations. */
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static bfd_reloc_status_type
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or32_reloc (bfd *abfd,
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asection *input_section,
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/* The consth relocation comes in two parts, we have to remember
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the state between calls, in these variables. */
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static bfd_boolean part1_consth_active = FALSE;
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static unsigned long part1_consth_value;
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unsigned long sym_value;
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unsigned long unsigned_value;
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unsigned short r_type;
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unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
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bfd_byte *hit_data =addr + (bfd_byte *)(data);
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r_type = reloc_entry->howto->type;
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/* Partial linking - do nothing. */
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reloc_entry->address += input_section->output_offset;
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if (symbol_in != NULL
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&& bfd_is_und_section (symbol_in->section))
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/* Keep the state machine happy in case we're called again. */
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if (r_type == R_IHIHALF)
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part1_consth_active = TRUE;
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part1_consth_value = 0;
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return bfd_reloc_undefined;
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if ((part1_consth_active) && (r_type != R_IHCONST))
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part1_consth_active = FALSE;
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*error_message = (char *) "Missing IHCONST";
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return bfd_reloc_dangerous;
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sym_value = get_symbol_value (symbol_in);
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insn = bfd_get_32(abfd, hit_data);
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/* Take the value in the field and sign extend it. */
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signed_value = EXTRACT_JUMPTARG (insn);
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signed_value = SIGN_EXTEND_JUMPTARG (signed_value);
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/* See the note on the R_IREL reloc in coff_or32_relocate_section. */
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if (signed_value == - (long) reloc_entry->address)
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signed_value += sym_value + reloc_entry->addend;
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/* Relative jmp/call, so subtract from the value the
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address of the place we're coming from. */
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signed_value -= (reloc_entry->address
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+ input_section->output_section->vma
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+ input_section->output_offset);
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if (signed_value > 0x7ffffff || signed_value < -0x8000000)
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return bfd_reloc_overflow;
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insn = INSERT_JUMPTARG (insn, signed_value);
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bfd_put_32 (abfd, insn, hit_data);
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insn = bfd_get_32 (abfd, hit_data);
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unsigned_value = EXTRACT_HWORD (insn);
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unsigned_value += sym_value + reloc_entry->addend;
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insn = INSERT_HWORD (insn, unsigned_value);
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bfd_put_32 (abfd, insn, hit_data);
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insn = bfd_get_32 (abfd, hit_data);
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Just get the symbol value that is referenced. */
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part1_consth_active = TRUE;
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part1_consth_value = sym_value + reloc_entry->addend;
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/* Don't modify insn until R_IHCONST. */
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insn = bfd_get_32 (abfd, hit_data);
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Now relocate the reference. */
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if (! part1_consth_active)
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*error_message = (char *) "Missing IHIHALF";
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return bfd_reloc_dangerous;
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/* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
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unsigned_value = 0; /*EXTRACT_HWORD(insn) << 16;*/
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unsigned_value += reloc_entry->addend; /* r_symndx */
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unsigned_value += part1_consth_value;
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unsigned_value = unsigned_value >> 16;
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insn = INSERT_HWORD (insn, unsigned_value);
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part1_consth_active = FALSE;
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bfd_put_32 (abfd, insn, hit_data);
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insn = bfd_get_8 (abfd, hit_data);
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unsigned_value = insn + sym_value + reloc_entry->addend;
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if (unsigned_value & 0xffffff00)
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return bfd_reloc_overflow;
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bfd_put_8 (abfd, unsigned_value, hit_data);
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insn = bfd_get_16 (abfd, hit_data);
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unsigned_value = insn + sym_value + reloc_entry->addend;
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if (unsigned_value & 0xffff0000)
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return bfd_reloc_overflow;
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bfd_put_16 (abfd, insn, hit_data);
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insn = bfd_get_32 (abfd, hit_data);
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insn += sym_value + reloc_entry->addend;
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bfd_put_32 (abfd, insn, hit_data);
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*error_message = _("Unrecognized reloc");
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return bfd_reloc_dangerous;
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/* FIXME: I'm not real sure about this table. */
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static reloc_howto_type howto_table[] =
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{ R_ABS, 0, 3, 32, FALSE, 0, complain_overflow_bitfield, or32_reloc, "ABS", TRUE, 0xffffffff,0xffffffff, FALSE },
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{ R_IREL, 0, 3, 32, TRUE, 0, complain_overflow_signed, or32_reloc, "IREL", TRUE, 0xffffffff,0xffffffff, FALSE },
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{ R_IABS, 0, 3, 32, FALSE, 0, complain_overflow_bitfield, or32_reloc, "IABS", TRUE, 0xffffffff,0xffffffff, FALSE },
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{ R_ILOHALF, 0, 3, 16, TRUE, 0, complain_overflow_signed, or32_reloc, "ILOHALF", TRUE, 0x0000ffff,0x0000ffff, FALSE },
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{ R_IHIHALF, 0, 3, 16, TRUE, 16,complain_overflow_signed, or32_reloc, "IHIHALF", TRUE, 0xffff0000,0xffff0000, FALSE },
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{ R_IHCONST, 0, 3, 16, TRUE, 0, complain_overflow_signed, or32_reloc, "IHCONST", TRUE, 0xffff0000,0xffff0000, FALSE },
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{ R_BYTE, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, or32_reloc, "BYTE", TRUE, 0x000000ff,0x000000ff, FALSE },
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{ R_HWORD, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, or32_reloc, "HWORD", TRUE, 0x0000ffff,0x0000ffff, FALSE },
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{ R_WORD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, or32_reloc, "WORD", TRUE, 0xffffffff,0xffffffff, FALSE },
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#define BADMAG(x) OR32BADMAG (x)
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#define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \
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reloc_processing (relent, reloc, symbols, abfd, section)
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reloc_processing (arelent *relent,
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struct internal_reloc *reloc,
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static bfd_vma ihihalf_vaddr = (bfd_vma) -1;
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relent->address = reloc->r_vaddr;
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relent->howto = howto_table + reloc->r_type;
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if (reloc->r_type == R_IHCONST)
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/* The address of an R_IHCONST should always be the address of
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the immediately preceding R_IHIHALF. relocs generated by gas
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are correct, but relocs generated by High C are different (I
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can't figure out what the address means for High C). We can
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handle both gas and High C by ignoring the address here, and
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simply reusing the address saved for R_IHIHALF. */
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if (ihihalf_vaddr == (bfd_vma) -1)
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relent->address = ihihalf_vaddr;
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ihihalf_vaddr = (bfd_vma) -1;
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relent->addend = reloc->r_symndx;
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relent->sym_ptr_ptr= bfd_abs_section_ptr->symbol_ptr_ptr;
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relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
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relent->address-= section->vma;
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if (reloc->r_type == R_IHIHALF)
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ihihalf_vaddr = relent->address;
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else if (ihihalf_vaddr != (bfd_vma) -1)
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/* The reloc processing routine for the optimized COFF linker. */
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coff_or32_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
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struct bfd_link_info *info,
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asection *input_section,
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struct internal_reloc *relocs,
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struct internal_syment *syms,
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struct internal_reloc *rel;
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struct internal_reloc *relend;
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/* If we are performing a relocatable link, we don't need to do a
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thing. The caller will take care of adjusting the reloc
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addresses and symbol indices. */
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if (info->relocatable)
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relend = rel + input_section->reloc_count;
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for (; rel < relend; rel++)
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struct coff_link_hash_entry *h;
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struct internal_syment *sym;
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bfd_boolean overflow;
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unsigned long unsigned_value;
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bfd_reloc_status_type rstat;
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symndx = rel->r_symndx;
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loc = contents + rel->r_vaddr - input_section->vma;
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if (symndx == -1 || rel->r_type == R_IHCONST)
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h = obj_coff_sym_hashes (input_bfd)[symndx];
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/* An R_IHCONST reloc does not have a symbol. Instead, the
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symbol index is an addend. R_IHCONST is always used in
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conjunction with R_IHHALF. */
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if (rel->r_type != R_IHCONST)
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sec = bfd_abs_section_ptr;
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sec = sections[symndx];
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val = (sec->output_section->vma
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if (h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak)
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sec = h->root.u.def.section;
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val = (h->root.u.def.value
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+ sec->output_section->vma
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+ sec->output_offset);
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if (! ((*info->callbacks->undefined_symbol)
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(info, h->root.root.string, input_bfd, input_section,
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rel->r_vaddr - input_section->vma, TRUE)))
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if (! ((*info->callbacks->reloc_dangerous)
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(info, "missing IHCONST reloc", input_bfd,
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input_section, rel->r_vaddr - input_section->vma)))
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bfd_set_error (bfd_error_bad_value);
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insn = bfd_get_32 (input_bfd, loc);
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/* Extract the addend. */
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signed_value = EXTRACT_JUMPTARG (insn);
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signed_value = SIGN_EXTEND_JUMPTARG (signed_value);
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/* Determine the destination of the jump. */
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/* Make the destination PC relative. */
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signed_value -= (input_section->output_section->vma
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+ input_section->output_offset
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+ (rel->r_vaddr - input_section->vma));
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if (signed_value > 0x7ffffff || signed_value < - 0x8000000)
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/* Put the adjusted value back into the instruction. */
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insn = INSERT_JUMPTARG(insn, signed_value);
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bfd_put_32 (input_bfd, (bfd_vma) insn, loc);
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insn = bfd_get_32 (input_bfd, loc);
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unsigned_value = EXTRACT_HWORD (insn);
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unsigned_value += val;
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insn = INSERT_HWORD (insn, unsigned_value);
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bfd_put_32 (input_bfd, insn, loc);
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/* Save the value for the R_IHCONST reloc. */
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if (! ((*info->callbacks->reloc_dangerous)
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(info, "missing IHIHALF reloc", input_bfd,
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input_section, rel->r_vaddr - input_section->vma)))
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insn = bfd_get_32 (input_bfd, loc);
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unsigned_value = rel->r_symndx + hihalf_val;
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unsigned_value >>= 16;
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insn = INSERT_HWORD (insn, unsigned_value);
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bfd_put_32 (input_bfd, (bfd_vma) insn, loc);
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rstat = _bfd_relocate_contents (howto_table + rel->r_type,
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input_bfd, val, loc);
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if (rstat == bfd_reloc_overflow)
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else if (rstat != bfd_reloc_ok)
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char buf[SYMNMLEN + 1];
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else if (sym == NULL)
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else if (sym->_n._n_n._n_zeroes == 0
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&& sym->_n._n_n._n_offset != 0)
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name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
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strncpy (buf, sym->_n._n_name, SYMNMLEN);
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buf[SYMNMLEN] = '\0';
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if (! ((*info->callbacks->reloc_overflow)
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(info, (h ? &h->root : NULL), name,
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howto_table[rel->r_type].name, (bfd_vma) 0, input_bfd,
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input_section, rel->r_vaddr - input_section->vma)))
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#define coff_relocate_section coff_or32_relocate_section
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/* We don't want to change the symndx of a R_IHCONST reloc, since it
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is actually an addend, not a symbol index at all. */
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coff_or32_adjust_symndx (bfd *obfd ATTRIBUTE_UNUSED,
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struct bfd_link_info *info ATTRIBUTE_UNUSED,
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bfd *ibfd ATTRIBUTE_UNUSED,
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asection *sec ATTRIBUTE_UNUSED,
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struct internal_reloc *irel,
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bfd_boolean *adjustedp)
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if (irel->r_type == R_IHCONST)
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#define coff_adjust_symndx coff_or32_adjust_symndx
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#ifndef bfd_pe_print_pdata
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#define bfd_pe_print_pdata NULL
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#include "coffcode.h"
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const bfd_target or32coff_big_vec =
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"coff-or32-big", /* Name. */
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bfd_target_coff_flavour,
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BFD_ENDIAN_BIG, /* Data byte order is big. */
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BFD_ENDIAN_BIG, /* Header byte order is big. */
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(HAS_RELOC | EXEC_P | /* Object flags. */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | WP_TEXT),
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(SEC_HAS_CONTENTS | SEC_ALLOC | /* Section flags. */
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SEC_LOAD | SEC_RELOC |
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'_', /* Leading underscore. */
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'/', /* ar_pad_char. */
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15, /* ar_max_namelen. */
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0, /* match priority. */
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16,
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bfd_getb64, bfd_getb_signed_64, bfd_putb64,
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bfd_getb32, bfd_getb_signed_32, bfd_putb32,
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bfd_getb16, bfd_getb_signed_16, bfd_putb16,
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bfd_generic_archive_p,
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_bfd_generic_mkarchive,
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coff_write_object_contents,
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_bfd_write_archive_contents,
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BFD_JUMP_TABLE_GENERIC (coff),
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BFD_JUMP_TABLE_COPY (coff),
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BFD_JUMP_TABLE_CORE (_bfd_nocore),
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BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
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BFD_JUMP_TABLE_SYMBOLS (coff),
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BFD_JUMP_TABLE_RELOCS (coff),
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BFD_JUMP_TABLE_WRITE (coff),
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BFD_JUMP_TABLE_LINK (coff),
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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/* Alternative_target. */
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#ifdef TARGET_LITTLE_SYM