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3e27568fe9
2004-04-23 Chris Demetriou <cgd@broadcom.com> * coff-mips.c (mips_relhi_reloc, mips_rello_reloc) (mips_switch_reloc, mips_read_relocs, mips_relax_section) (mips_relax_pcrel16, PCREL16_EXPANSION_ADJUSTMENT): Remove. (mips_relocate_hi): Remove now-unused 'adjust' and 'pcrel' arguments, and update comments to reflect current usage. (mips_howto_table): Remove entries for MIPS_R_RELHI, MIPS_R_RELLO, and MIPS_R_SWITCH, as well as several empty entries. Update comment for MIPS_R_PCREL16. (mips_ecoff_swap_reloc_in, mips_ecoff_swap_reloc_out) (mips_adjust_reloc_out, mips_bfd_reloc_type_lookup): Remove support for MIPS_R_SWITCH, MIPS_R_RELLO, and MIPS_R_RELHI relocations. (mips_adjust_reloc_in): Likewise, adjust maximum accepted relocation type number to be MIPS_R_PCREL16. (mips_relocate_section): Remove support for link-time relaxation of branches used by embedded-PIC. Remove support for MIPS_R_SWITCH, MIPS_R_RELLO, and MIPS_R_RELHI relocations. (_bfd_ecoff_bfd_relax_section): Redefine to bfd_generic_relax_section. * ecoff.c (ecoff_indirect_link_order): Remove support for link-time relaxation of branches used by embedded-PIC. * ecofflink.c (bfd_ecoff_debug_accumulate): Likewise. * libecoff.h (struct ecoff_section_tdata): Remove embedded-PIC related members, update comment. * pe-mips.c: Remove disabled (commented-out and #if 0'd) code related to embedded-PIC. * elfxx-mips.c (_bfd_mips_elf_read_ecoff_info): Remove initialization of now-removed 'adjust' member of 'struct ecoff_debug_info'. [ include/coff/ChangeLog ] 2004-04-23 Chris Demetriou <cgd@broadcom.com> * mips.h (MIPS_R_RELHI, MIPS_R_RELLO, MIPS_R_SWITCH): Remove (MIPS_R_PCREL16): Update comment. * ecoff.h (struct ecoff_value_adjust): Remove structure. (struct ecoff_debug_info): Remove 'adjust' member.
977 lines
27 KiB
C
977 lines
27 KiB
C
/* BFD back-end for MIPS PE COFF files.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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Modified from coff-i386.c by DJ Delorie, dj@cygnus.com
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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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define COFF_WITH_PE
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#define COFF_LONG_SECTION_NAMES
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#define PCRELOFFSET TRUE
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "coff/mipspe.h"
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#include "coff/internal.h"
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#include "coff/pe.h"
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#include "libcoff.h"
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static bfd_reloc_status_type coff_mips_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type *coff_mips_rtype_to_howto
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PARAMS ((bfd *, asection *, struct internal_reloc *,
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struct coff_link_hash_entry *, struct internal_syment *,
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bfd_vma *));
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static bfd_boolean in_reloc_p
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PARAMS ((bfd *, reloc_howto_type *));
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static reloc_howto_type * coff_mips_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static void mips_swap_reloc_in
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PARAMS ((bfd *, PTR, PTR));
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static unsigned int mips_swap_reloc_out
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PARAMS ((bfd *, PTR, PTR));
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static bfd_boolean coff_pe_mips_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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struct internal_reloc *, struct internal_syment *, asection **));
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
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/* The page size is a guess based on ELF. */
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#define COFF_PAGE_SIZE 0x1000
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/* For some reason when using mips COFF the value stored in the .text
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section for a reference to a common symbol is the value itself plus
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any desired offset. Ian Taylor, Cygnus Support. */
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/* If we are producing relocatable output, we need to do some
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adjustments to the object file that are not done by the
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bfd_perform_relocation function. This function is called by every
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reloc type to make any required adjustments. */
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static bfd_reloc_status_type
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coff_mips_reloc (abfd, reloc_entry, symbol, data, input_section, output_bfd,
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error_message)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *symbol;
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PTR data;
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asection *input_section ATTRIBUTE_UNUSED;
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bfd *output_bfd;
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char **error_message ATTRIBUTE_UNUSED;
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{
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symvalue diff;
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if (output_bfd == (bfd *) NULL)
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return bfd_reloc_continue;
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if (bfd_is_com_section (symbol->section))
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{
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#ifndef COFF_WITH_PE
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/* We are relocating a common symbol. The current value in the
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object file is ORIG + OFFSET, where ORIG is the value of the
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common symbol as seen by the object file when it was compiled
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(this may be zero if the symbol was undefined) and OFFSET is
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the offset into the common symbol (normally zero, but may be
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non-zero when referring to a field in a common structure).
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ORIG is the negative of reloc_entry->addend, which is set by
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the CALC_ADDEND macro below. We want to replace the value in
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the object file with NEW + OFFSET, where NEW is the value of
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the common symbol which we are going to put in the final
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object file. NEW is symbol->value. */
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diff = symbol->value + reloc_entry->addend;
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#else
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/* In PE mode, we do not offset the common symbol. */
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diff = reloc_entry->addend;
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#endif
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}
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else
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{
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/* For some reason bfd_perform_relocation always effectively
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ignores the addend for a COFF target when producing
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relocatable output. This seems to be always wrong for 386
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COFF, so we handle the addend here instead. */
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diff = reloc_entry->addend;
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}
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#ifdef COFF_WITH_PE
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#if 0
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/* dj - handle it like any other reloc? */
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/* FIXME: How should this case be handled? */
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if (reloc_entry->howto->type == MIPS_R_RVA && diff != 0)
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abort ();
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#endif
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#endif
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#define DOIT(x) \
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x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + (diff >> howto->rightshift)) & howto->dst_mask))
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if (diff != 0)
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{
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reloc_howto_type *howto = reloc_entry->howto;
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unsigned char *addr = (unsigned char *) data + reloc_entry->address;
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switch (howto->size)
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{
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case 0:
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{
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char x = bfd_get_8 (abfd, addr);
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DOIT (x);
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bfd_put_8 (abfd, x, addr);
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}
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break;
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case 1:
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{
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short x = bfd_get_16 (abfd, addr);
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DOIT (x);
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bfd_put_16 (abfd, (bfd_vma) x, addr);
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}
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break;
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case 2:
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{
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long x = bfd_get_32 (abfd, addr);
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DOIT (x);
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bfd_put_32 (abfd, (bfd_vma) x, addr);
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}
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break;
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default:
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abort ();
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}
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}
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/* Now let bfd_perform_relocation finish everything up. */
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return bfd_reloc_continue;
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}
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#ifdef COFF_WITH_PE
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/* Return TRUE if this relocation should
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appear in the output .reloc section. */
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static bfd_boolean
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in_reloc_p (abfd, howto)
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bfd * abfd ATTRIBUTE_UNUSED;
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reloc_howto_type *howto;
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{
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return ! howto->pc_relative && howto->type != MIPS_R_RVA;
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}
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#endif
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#ifndef PCRELOFFSET
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#define PCRELOFFSET FALSE
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#endif
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static reloc_howto_type howto_table[] =
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{
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/* Reloc type 0 is ignored. The reloc reading code ensures that
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this is a reference to the .abs section, which will cause
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bfd_perform_relocation to do nothing. */
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HOWTO (MIPS_R_ABSOLUTE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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0, /* special_function */
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"IGNORE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 16 bit reference to a symbol, normally from a data section. */
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HOWTO (MIPS_R_REFHALF, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_mips_reloc, /* special_function */
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"REFHALF", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 32 bit reference to a symbol, normally from a data section. */
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HOWTO (MIPS_R_REFWORD, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_mips_reloc, /* special_function */
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"REFWORD", /* name */
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TRUE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 26 bit absolute jump address. */
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HOWTO (MIPS_R_JMPADDR, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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/* This needs complex overflow
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detection, because the upper four
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bits must match the PC. */
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coff_mips_reloc, /* special_function */
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"JMPADDR", /* name */
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TRUE, /* partial_inplace */
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0x3ffffff, /* src_mask */
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0x3ffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* The high 16 bits of a symbol value. Handled by the function
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mips_refhi_reloc. */
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HOWTO (MIPS_R_REFHI, /* type */
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16, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_mips_reloc, /* special_function */
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"REFHI", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* The low 16 bits of a symbol value. */
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HOWTO (MIPS_R_REFLO, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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coff_mips_reloc, /* special_function */
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"REFLO", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A reference to an offset from the gp register. Handled by the
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function mips_gprel_reloc. */
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HOWTO (MIPS_R_GPREL, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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coff_mips_reloc, /* special_function */
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"GPREL", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A reference to a literal using an offset from the gp register.
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Handled by the function mips_gprel_reloc. */
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HOWTO (MIPS_R_LITERAL, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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coff_mips_reloc, /* special_function */
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"LITERAL", /* name */
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TRUE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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EMPTY_HOWTO (8),
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EMPTY_HOWTO (9),
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EMPTY_HOWTO (10),
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EMPTY_HOWTO (11),
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EMPTY_HOWTO (12),
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EMPTY_HOWTO (13),
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EMPTY_HOWTO (14),
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EMPTY_HOWTO (15),
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EMPTY_HOWTO (16),
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EMPTY_HOWTO (17),
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EMPTY_HOWTO (18),
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EMPTY_HOWTO (19),
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EMPTY_HOWTO (20),
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EMPTY_HOWTO (21),
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EMPTY_HOWTO (22),
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EMPTY_HOWTO (23),
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EMPTY_HOWTO (24),
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EMPTY_HOWTO (25),
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EMPTY_HOWTO (26),
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EMPTY_HOWTO (27),
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EMPTY_HOWTO (28),
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EMPTY_HOWTO (29),
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EMPTY_HOWTO (30),
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EMPTY_HOWTO (31),
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EMPTY_HOWTO (32),
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EMPTY_HOWTO (33),
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HOWTO (MIPS_R_RVA, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_mips_reloc, /* special_function */
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"rva32", /* name */
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TRUE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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EMPTY_HOWTO (35),
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EMPTY_HOWTO (36),
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HOWTO (MIPS_R_PAIR, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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coff_mips_reloc, /* special_function */
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"PAIR", /* name */
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TRUE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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};
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/* Turn a howto into a reloc nunmber */
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#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
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#define BADMAG(x) MIPSBADMAG(x)
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#define MIPS 1 /* Customize coffcode.h */
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#define RTYPE2HOWTO(cache_ptr, dst) \
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(cache_ptr)->howto = howto_table + (dst)->r_type;
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/* Compute the addend of a reloc. If the reloc is to a common symbol,
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the object file contains the value of the common symbol. By the
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time this is called, the linker may be using a different symbol
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from a different object file with a different value. Therefore, we
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hack wildly to locate the original symbol from this file so that we
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can make the correct adjustment. This macro sets coffsym to the
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symbol from the original file, and uses it to set the addend value
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correctly. If this is not a common symbol, the usual addend
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calculation is done, except that an additional tweak is needed for
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PC relative relocs.
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FIXME: This macro refers to symbols and asect; these are from the
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calling function, not the macro arguments. */
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#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
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{ \
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coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
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if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
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coffsym = (obj_symbols (abfd) \
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+ (cache_ptr->sym_ptr_ptr - symbols)); \
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else if (ptr) \
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coffsym = coff_symbol_from (abfd, ptr); \
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if (coffsym != (coff_symbol_type *) NULL \
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&& coffsym->native->u.syment.n_scnum == 0) \
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cache_ptr->addend = - coffsym->native->u.syment.n_value; \
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else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
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&& ptr->section != (asection *) NULL) \
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cache_ptr->addend = - (ptr->section->vma + ptr->value); \
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else \
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cache_ptr->addend = 0; \
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if (ptr && howto_table[reloc.r_type].pc_relative) \
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cache_ptr->addend += asect->vma; \
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}
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/* Convert an rtype to howto for the COFF backend linker. */
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static reloc_howto_type *
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coff_mips_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
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bfd *abfd ATTRIBUTE_UNUSED;
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asection *sec;
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struct internal_reloc *rel;
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struct coff_link_hash_entry *h;
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struct internal_syment *sym;
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bfd_vma *addendp;
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{
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reloc_howto_type *howto;
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howto = howto_table + rel->r_type;
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#ifdef COFF_WITH_PE
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*addendp = 0;
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#endif
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if (howto->pc_relative)
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*addendp += sec->vma;
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if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
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{
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/* This is a common symbol. The section contents include the
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size (sym->n_value) as an addend. The relocate_section
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function will be adding in the final value of the symbol. We
|
|
need to subtract out the current size in order to get the
|
|
correct result. */
|
|
|
|
BFD_ASSERT (h != NULL);
|
|
|
|
#ifndef COFF_WITH_PE
|
|
/* I think we *do* want to bypass this. If we don't, I have
|
|
seen some data parameters get the wrong relocation address.
|
|
If I link two versions with and without this section bypassed
|
|
and then do a binary comparison, the addresses which are
|
|
different can be looked up in the map. The case in which
|
|
this section has been bypassed has addresses which correspond
|
|
to values I can find in the map. */
|
|
*addendp -= sym->n_value;
|
|
#endif
|
|
}
|
|
|
|
#ifndef COFF_WITH_PE
|
|
/* If the output symbol is common (in which case this must be a
|
|
relocatable link), we need to add in the final size of the
|
|
common symbol. */
|
|
if (h != NULL && h->root.type == bfd_link_hash_common)
|
|
*addendp += h->root.u.c.size;
|
|
#endif
|
|
|
|
#ifdef COFF_WITH_PE
|
|
if (howto->pc_relative)
|
|
{
|
|
*addendp -= 4;
|
|
|
|
/* If the symbol is defined, then the generic code is going to
|
|
add back the symbol value in order to cancel out an
|
|
adjustment it made to the addend. However, we set the addend
|
|
to 0 at the start of this function. We need to adjust here,
|
|
to avoid the adjustment the generic code will make. FIXME:
|
|
This is getting a bit hackish. */
|
|
if (sym != NULL && sym->n_scnum != 0)
|
|
*addendp -= sym->n_value;
|
|
}
|
|
|
|
if (rel->r_type == MIPS_R_RVA)
|
|
{
|
|
*addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
|
|
}
|
|
#endif
|
|
|
|
return howto;
|
|
}
|
|
|
|
#define coff_rtype_to_howto coff_mips_rtype_to_howto
|
|
|
|
#define coff_bfd_reloc_type_lookup coff_mips_reloc_type_lookup
|
|
|
|
/* Get the howto structure for a generic reloc type. */
|
|
|
|
static reloc_howto_type *
|
|
coff_mips_reloc_type_lookup (abfd, code)
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
bfd_reloc_code_real_type code;
|
|
{
|
|
int mips_type;
|
|
|
|
switch (code)
|
|
{
|
|
case BFD_RELOC_16:
|
|
mips_type = MIPS_R_REFHALF;
|
|
break;
|
|
case BFD_RELOC_32:
|
|
case BFD_RELOC_CTOR:
|
|
mips_type = MIPS_R_REFWORD;
|
|
break;
|
|
case BFD_RELOC_MIPS_JMP:
|
|
mips_type = MIPS_R_JMPADDR;
|
|
break;
|
|
case BFD_RELOC_HI16_S:
|
|
mips_type = MIPS_R_REFHI;
|
|
break;
|
|
case BFD_RELOC_LO16:
|
|
mips_type = MIPS_R_REFLO;
|
|
break;
|
|
case BFD_RELOC_GPREL16:
|
|
mips_type = MIPS_R_GPREL;
|
|
break;
|
|
case BFD_RELOC_MIPS_LITERAL:
|
|
mips_type = MIPS_R_LITERAL;
|
|
break;
|
|
case BFD_RELOC_RVA:
|
|
mips_type = MIPS_R_RVA;
|
|
break;
|
|
default:
|
|
return (reloc_howto_type *) NULL;
|
|
}
|
|
|
|
return &howto_table[mips_type];
|
|
}
|
|
|
|
static void
|
|
mips_swap_reloc_in (abfd, src, dst)
|
|
bfd *abfd;
|
|
PTR src;
|
|
PTR dst;
|
|
{
|
|
static struct internal_reloc pair_prev;
|
|
RELOC *reloc_src = (RELOC *) src;
|
|
struct internal_reloc *reloc_dst = (struct internal_reloc *) dst;
|
|
|
|
reloc_dst->r_vaddr = H_GET_32 (abfd, reloc_src->r_vaddr);
|
|
reloc_dst->r_symndx = H_GET_S32 (abfd, reloc_src->r_symndx);
|
|
reloc_dst->r_type = H_GET_16 (abfd, reloc_src->r_type);
|
|
reloc_dst->r_size = 0;
|
|
reloc_dst->r_extern = 0;
|
|
reloc_dst->r_offset = 0;
|
|
|
|
switch (reloc_dst->r_type)
|
|
{
|
|
case MIPS_R_REFHI:
|
|
pair_prev = *reloc_dst;
|
|
break;
|
|
case MIPS_R_PAIR:
|
|
reloc_dst->r_offset = reloc_dst->r_symndx;
|
|
if (reloc_dst->r_offset & 0x8000)
|
|
reloc_dst->r_offset -= 0x10000;
|
|
/*printf ("dj: pair offset is %08x\n", reloc_dst->r_offset);*/
|
|
reloc_dst->r_symndx = pair_prev.r_symndx;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static unsigned int
|
|
mips_swap_reloc_out (abfd, src, dst)
|
|
bfd *abfd;
|
|
PTR src;
|
|
PTR dst;
|
|
{
|
|
static int prev_offset = 1;
|
|
static bfd_vma prev_addr = 0;
|
|
struct internal_reloc *reloc_src = (struct internal_reloc *)src;
|
|
struct external_reloc *reloc_dst = (struct external_reloc *)dst;
|
|
|
|
switch (reloc_src->r_type)
|
|
{
|
|
case MIPS_R_REFHI:
|
|
prev_addr = reloc_src->r_vaddr;
|
|
prev_offset = reloc_src->r_offset;
|
|
break;
|
|
case MIPS_R_REFLO:
|
|
if (reloc_src->r_vaddr == prev_addr)
|
|
{
|
|
/* FIXME: only slightly hackish. If we see a REFLO pointing to
|
|
the same address as a REFHI, we assume this is the matching
|
|
PAIR reloc and output it accordingly. The symndx is really
|
|
the low 16 bits of the addend */
|
|
H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr);
|
|
H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx);
|
|
H_PUT_16 (abfd, MIPS_R_PAIR, reloc_dst->r_type);
|
|
return RELSZ;
|
|
}
|
|
break;
|
|
}
|
|
|
|
H_PUT_32 (abfd, reloc_src->r_vaddr, reloc_dst->r_vaddr);
|
|
H_PUT_32 (abfd, reloc_src->r_symndx, reloc_dst->r_symndx);
|
|
|
|
H_PUT_16 (abfd, reloc_src->r_type, reloc_dst->r_type);
|
|
return RELSZ;
|
|
}
|
|
|
|
#define coff_swap_reloc_in mips_swap_reloc_in
|
|
#define coff_swap_reloc_out mips_swap_reloc_out
|
|
#define NO_COFF_RELOCS
|
|
|
|
static bfd_boolean
|
|
coff_pe_mips_relocate_section (output_bfd, info, input_bfd,
|
|
input_section, contents, relocs, syms,
|
|
sections)
|
|
bfd *output_bfd;
|
|
struct bfd_link_info *info;
|
|
bfd *input_bfd;
|
|
asection *input_section;
|
|
bfd_byte *contents;
|
|
struct internal_reloc *relocs;
|
|
struct internal_syment *syms;
|
|
asection **sections;
|
|
{
|
|
bfd_vma gp;
|
|
bfd_boolean gp_undefined;
|
|
size_t adjust;
|
|
struct internal_reloc *rel;
|
|
struct internal_reloc *rel_end;
|
|
unsigned int i;
|
|
bfd_boolean got_lo;
|
|
|
|
if (info->relocatable)
|
|
{
|
|
(*_bfd_error_handler) (_("\
|
|
%s: `ld -r' not supported with PE MIPS objects\n"),
|
|
bfd_archive_filename (input_bfd));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return FALSE;
|
|
}
|
|
|
|
BFD_ASSERT (input_bfd->xvec->byteorder
|
|
== output_bfd->xvec->byteorder);
|
|
|
|
#if 0
|
|
printf ("dj: relocate %s(%s) %08x\n",
|
|
input_bfd->filename, input_section->name,
|
|
input_section->output_section->vma + input_section->output_offset);
|
|
#endif
|
|
|
|
gp = _bfd_get_gp_value (output_bfd);
|
|
if (gp == 0)
|
|
gp_undefined = TRUE;
|
|
else
|
|
gp_undefined = FALSE;
|
|
|
|
got_lo = FALSE;
|
|
|
|
adjust = 0;
|
|
|
|
rel = relocs;
|
|
rel_end = rel + input_section->reloc_count;
|
|
for (i = 0; rel < rel_end; rel++, i++)
|
|
{
|
|
long symndx;
|
|
struct coff_link_hash_entry *h;
|
|
struct internal_syment *sym;
|
|
bfd_vma addend = 0;
|
|
bfd_vma val, tmp, targ, src, low;
|
|
reloc_howto_type *howto;
|
|
unsigned char *mem = contents + rel->r_vaddr;
|
|
|
|
symndx = rel->r_symndx;
|
|
|
|
if (symndx == -1)
|
|
{
|
|
h = NULL;
|
|
sym = NULL;
|
|
}
|
|
else
|
|
{
|
|
h = obj_coff_sym_hashes (input_bfd)[symndx];
|
|
sym = syms + symndx;
|
|
}
|
|
|
|
/* COFF treats common symbols in one of two ways. Either the
|
|
size of the symbol is included in the section contents, or it
|
|
is not. We assume that the size is not included, and force
|
|
the rtype_to_howto function to adjust the addend as needed. */
|
|
|
|
if (sym != NULL && sym->n_scnum != 0)
|
|
addend = - sym->n_value;
|
|
else
|
|
addend = 0;
|
|
|
|
howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
|
|
sym, &addend);
|
|
if (howto == NULL)
|
|
return FALSE;
|
|
|
|
/* If we are doing a relocatable link, then we can just ignore
|
|
a PC relative reloc that is pcrel_offset. It will already
|
|
have the correct value. If this is not a relocatable link,
|
|
then we should ignore the symbol value. */
|
|
if (howto->pc_relative && howto->pcrel_offset)
|
|
{
|
|
if (info->relocatable)
|
|
continue;
|
|
if (sym != NULL && sym->n_scnum != 0)
|
|
addend += sym->n_value;
|
|
}
|
|
|
|
val = 0;
|
|
|
|
if (h == NULL)
|
|
{
|
|
asection *sec;
|
|
|
|
if (symndx == -1)
|
|
{
|
|
sec = bfd_abs_section_ptr;
|
|
val = 0;
|
|
}
|
|
else
|
|
{
|
|
sec = sections[symndx];
|
|
val = (sec->output_section->vma
|
|
+ sec->output_offset
|
|
+ sym->n_value);
|
|
if (! obj_pe (input_bfd))
|
|
val -= sec->vma;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (h->root.type == bfd_link_hash_defined
|
|
|| h->root.type == bfd_link_hash_defweak)
|
|
{
|
|
asection *sec;
|
|
|
|
sec = h->root.u.def.section;
|
|
val = (h->root.u.def.value
|
|
+ sec->output_section->vma
|
|
+ sec->output_offset);
|
|
}
|
|
|
|
else if (! info->relocatable)
|
|
{
|
|
if (! ((*info->callbacks->undefined_symbol)
|
|
(info, h->root.root.string, input_bfd, input_section,
|
|
rel->r_vaddr - input_section->vma, TRUE)))
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
src = rel->r_vaddr + input_section->output_section->vma
|
|
+ input_section->output_offset;
|
|
#if 0
|
|
printf ("dj: reloc %02x %-8s a=%08x/%08x(%08x) v=%08x+%08x %s\n",
|
|
rel->r_type, howto_table[rel->r_type].name,
|
|
src, rel->r_vaddr, *(unsigned long *)mem, val, rel->r_offset,
|
|
h?h->root.root.string:"(none)");
|
|
#endif
|
|
|
|
/* OK, at this point the following variables are set up:
|
|
src = VMA of the memory we're fixing up
|
|
mem = pointer to memory we're fixing up
|
|
val = VMA of what we need to refer to
|
|
*/
|
|
|
|
#define UI(x) (*_bfd_error_handler) (_("%s: unimplemented %s\n"), \
|
|
bfd_archive_filename (input_bfd), x); \
|
|
bfd_set_error (bfd_error_bad_value);
|
|
|
|
switch (rel->r_type)
|
|
{
|
|
case MIPS_R_ABSOLUTE:
|
|
/* ignore these */
|
|
break;
|
|
|
|
case MIPS_R_REFHALF:
|
|
UI("refhalf");
|
|
break;
|
|
|
|
case MIPS_R_REFWORD:
|
|
tmp = bfd_get_32(input_bfd, mem);
|
|
/* printf ("refword: src=%08x targ=%08x+%08x\n", src, tmp, val); */
|
|
tmp += val;
|
|
bfd_put_32(input_bfd, tmp, mem);
|
|
break;
|
|
|
|
case MIPS_R_JMPADDR:
|
|
tmp = bfd_get_32(input_bfd, mem);
|
|
targ = val + (tmp&0x03ffffff)*4;
|
|
if ((src & 0xf0000000) != (targ & 0xf0000000))
|
|
{
|
|
(*_bfd_error_handler) (_("%s: jump too far away\n"),
|
|
bfd_archive_filename (input_bfd));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return FALSE;
|
|
}
|
|
tmp &= 0xfc000000;
|
|
tmp |= (targ/4) & 0x3ffffff;
|
|
bfd_put_32(input_bfd, tmp, mem);
|
|
break;
|
|
|
|
case MIPS_R_REFHI:
|
|
tmp = bfd_get_32(input_bfd, mem);
|
|
switch (rel[1].r_type)
|
|
{
|
|
case MIPS_R_PAIR:
|
|
/* MS PE object */
|
|
targ = val + rel[1].r_offset + ((tmp & 0xffff) << 16);
|
|
break;
|
|
case MIPS_R_REFLO:
|
|
/* GNU COFF object */
|
|
low = bfd_get_32(input_bfd, contents + rel[1].r_vaddr);
|
|
low &= 0xffff;
|
|
if (low & 0x8000)
|
|
low -= 0x10000;
|
|
targ = val + low + ((tmp & 0xffff) << 16);
|
|
break;
|
|
default:
|
|
(*_bfd_error_handler) (_("%s: bad pair/reflo after refhi\n"),
|
|
bfd_archive_filename (input_bfd));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return FALSE;
|
|
}
|
|
tmp &= 0xffff0000;
|
|
tmp |= (targ >> 16) & 0xffff;
|
|
bfd_put_32(input_bfd, tmp, mem);
|
|
break;
|
|
|
|
case MIPS_R_REFLO:
|
|
tmp = bfd_get_32(input_bfd, mem);
|
|
targ = val + (tmp & 0xffff);
|
|
/* printf ("refword: src=%08x targ=%08x\n", src, targ); */
|
|
tmp &= 0xffff0000;
|
|
tmp |= targ & 0xffff;
|
|
bfd_put_32(input_bfd, tmp, mem);
|
|
break;
|
|
|
|
case MIPS_R_GPREL:
|
|
case MIPS_R_LITERAL:
|
|
UI("gprel");
|
|
break;
|
|
|
|
case MIPS_R_SECTION:
|
|
UI("section");
|
|
break;
|
|
|
|
case MIPS_R_SECREL:
|
|
UI("secrel");
|
|
break;
|
|
|
|
case MIPS_R_SECRELLO:
|
|
UI("secrello");
|
|
break;
|
|
|
|
case MIPS_R_SECRELHI:
|
|
UI("secrelhi");
|
|
break;
|
|
|
|
case MIPS_R_RVA:
|
|
tmp = bfd_get_32 (input_bfd, mem);
|
|
/* printf ("rva: src=%08x targ=%08x+%08x\n", src, tmp, val); */
|
|
tmp += val
|
|
- pe_data (input_section->output_section->owner)->pe_opthdr.ImageBase;
|
|
bfd_put_32 (input_bfd, tmp, mem);
|
|
break;
|
|
|
|
case MIPS_R_PAIR:
|
|
/* ignore these */
|
|
break;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define coff_relocate_section coff_pe_mips_relocate_section
|
|
|
|
#ifdef TARGET_UNDERSCORE
|
|
|
|
/* If mips gcc uses underscores for symbol names, then it does not use
|
|
a leading dot for local labels, so if TARGET_UNDERSCORE is defined
|
|
we treat all symbols starting with L as local. */
|
|
|
|
static bfd_boolean coff_mips_is_local_label_name
|
|
PARAMS ((bfd *, const char *));
|
|
|
|
static bfd_boolean
|
|
coff_mips_is_local_label_name (abfd, name)
|
|
bfd *abfd;
|
|
const char *name;
|
|
{
|
|
if (name[0] == 'L')
|
|
return TRUE;
|
|
|
|
return _bfd_coff_is_local_label_name (abfd, name);
|
|
}
|
|
|
|
#define coff_bfd_is_local_label_name coff_mips_is_local_label_name
|
|
|
|
#endif /* TARGET_UNDERSCORE */
|
|
|
|
#define COFF_NO_HACK_SCNHDR_SIZE
|
|
|
|
#include "coffcode.h"
|
|
|
|
const bfd_target
|
|
#ifdef TARGET_SYM
|
|
TARGET_SYM =
|
|
#else
|
|
mipslpe_vec =
|
|
#endif
|
|
{
|
|
#ifdef TARGET_NAME
|
|
TARGET_NAME,
|
|
#else
|
|
"pe-mips", /* name */
|
|
#endif
|
|
bfd_target_coff_flavour,
|
|
BFD_ENDIAN_LITTLE, /* data byte order is little */
|
|
BFD_ENDIAN_LITTLE, /* header byte order is little */
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
|
|
|
#ifndef COFF_WITH_PE
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
|
|
| SEC_CODE | SEC_DATA),
|
|
#else
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
|
|
| SEC_CODE | SEC_DATA
|
|
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
|
|
#endif
|
|
|
|
#ifdef TARGET_UNDERSCORE
|
|
TARGET_UNDERSCORE, /* leading underscore */
|
|
#else
|
|
0, /* leading underscore */
|
|
#endif
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
|
|
|
/* Note that we allow an object file to be treated as a core file as well. */
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
|
bfd_generic_archive_p, coff_object_p},
|
|
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
|
bfd_false},
|
|
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
NULL,
|
|
|
|
COFF_SWAP_TABLE
|
|
};
|