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[ bfd/ChangeLog ]
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.
This commit is contained in:
Chris Demetriou
parent
9f7194c374
commit
3e27568fe9
@ -1,3 +1,33 @@
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2004-04-23 Chris Demetriou <cgd@broadcom.com>
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* coff-mips.c (mips_relhi_reloc, mips_rello_reloc)
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(mips_switch_reloc, mips_read_relocs, mips_relax_section)
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(mips_relax_pcrel16, PCREL16_EXPANSION_ADJUSTMENT): Remove.
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(mips_relocate_hi): Remove now-unused 'adjust' and 'pcrel' arguments,
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and update comments to reflect current usage.
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(mips_howto_table): Remove entries for MIPS_R_RELHI, MIPS_R_RELLO,
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and MIPS_R_SWITCH, as well as several empty entries. Update comment
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for MIPS_R_PCREL16.
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(mips_ecoff_swap_reloc_in, mips_ecoff_swap_reloc_out)
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(mips_adjust_reloc_out, mips_bfd_reloc_type_lookup): Remove support
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for MIPS_R_SWITCH, MIPS_R_RELLO, and MIPS_R_RELHI relocations.
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(mips_adjust_reloc_in): Likewise, adjust maximum accepted relocation
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type number to be MIPS_R_PCREL16.
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(mips_relocate_section): Remove support for link-time relaxation
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of branches used by embedded-PIC. Remove support for MIPS_R_SWITCH,
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MIPS_R_RELLO, and MIPS_R_RELHI relocations.
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(_bfd_ecoff_bfd_relax_section): Redefine to bfd_generic_relax_section.
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* ecoff.c (ecoff_indirect_link_order): Remove support for link-time
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relaxation of branches used by embedded-PIC.
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* ecofflink.c (bfd_ecoff_debug_accumulate): Likewise.
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* libecoff.h (struct ecoff_section_tdata): Remove embedded-PIC
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related members, update comment.
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* pe-mips.c: Remove disabled (commented-out and #if 0'd)
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code related to embedded-PIC.
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* elfxx-mips.c (_bfd_mips_elf_read_ecoff_info): Remove
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initialization of now-removed 'adjust' member of
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'struct ecoff_debug_info'.
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2004-04-23 Chris Demetriou <cgd@broadcom.com>
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* elfxx-mips.c (mips_elf_get_global_gotsym_index): Remove.
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1114
bfd/coff-mips.c
1114
bfd/coff-mips.c
File diff suppressed because it is too large
Load Diff
43
bfd/ecoff.c
43
bfd/ecoff.c
@ -4526,7 +4526,6 @@ ecoff_indirect_link_order (output_bfd, info, output_section, link_order)
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{
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asection *input_section;
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bfd *input_bfd;
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struct ecoff_section_tdata *section_tdata;
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bfd_size_type raw_size;
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bfd_size_type cooked_size;
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bfd_byte *contents = NULL;
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@ -4542,7 +4541,6 @@ ecoff_indirect_link_order (output_bfd, info, output_section, link_order)
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input_section = link_order->u.indirect.section;
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input_bfd = input_section->owner;
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section_tdata = ecoff_section_data (input_bfd, input_section);
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raw_size = input_section->_raw_size;
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cooked_size = input_section->_cooked_size;
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@ -4560,39 +4558,24 @@ ecoff_indirect_link_order (output_bfd, info, output_section, link_order)
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if (contents == NULL && amt != 0)
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goto error_return;
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/* If we are relaxing, the contents may have already been read into
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memory, in which case we copy them into our new buffer. We don't
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simply reuse the old buffer in case cooked_size > raw_size. */
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if (section_tdata != (struct ecoff_section_tdata *) NULL
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&& section_tdata->contents != (bfd_byte *) NULL)
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memcpy (contents, section_tdata->contents, (size_t) raw_size);
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else
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{
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if (! bfd_get_section_contents (input_bfd, input_section,
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(PTR) contents,
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(file_ptr) 0, raw_size))
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goto error_return;
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}
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if (! bfd_get_section_contents (input_bfd, input_section,
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(PTR) contents,
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(file_ptr) 0, raw_size))
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goto error_return;
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/* Get the relocs. If we are relaxing MIPS code, they will already
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have been read in. Otherwise, we read them in now. */
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external_reloc_size = ecoff_backend (input_bfd)->external_reloc_size;
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external_relocs_size = external_reloc_size * input_section->reloc_count;
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if (section_tdata != (struct ecoff_section_tdata *) NULL
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&& section_tdata->external_relocs != NULL)
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external_relocs = section_tdata->external_relocs;
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else
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{
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external_relocs = (PTR) bfd_malloc (external_relocs_size);
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if (external_relocs == NULL && external_relocs_size != 0)
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goto error_return;
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external_relocs = (PTR) bfd_malloc (external_relocs_size);
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if (external_relocs == NULL && external_relocs_size != 0)
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goto error_return;
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if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
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|| (bfd_bread (external_relocs, external_relocs_size, input_bfd)
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!= external_relocs_size))
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goto error_return;
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}
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if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
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|| (bfd_bread (external_relocs, external_relocs_size, input_bfd)
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!= external_relocs_size))
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goto error_return;
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/* Relocate the section contents. */
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if (! ((*ecoff_backend (input_bfd)->relocate_section)
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@ -4625,14 +4608,14 @@ ecoff_indirect_link_order (output_bfd, info, output_section, link_order)
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if (contents != NULL)
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free (contents);
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if (external_relocs != NULL && section_tdata == NULL)
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if (external_relocs != NULL)
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free (external_relocs);
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return TRUE;
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error_return:
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if (contents != NULL)
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free (contents);
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if (external_relocs != NULL && section_tdata == NULL)
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if (external_relocs != NULL)
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free (external_relocs);
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return FALSE;
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}
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@ -800,20 +800,6 @@ bfd_ecoff_debug_accumulate (handle, output_bfd, output_debug, output_swap,
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fdr_adr = fdr.adr;
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/* Adjust the FDR address for any changes that may have been
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made by relaxing. */
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if (input_debug->adjust != (struct ecoff_value_adjust *) NULL)
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{
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struct ecoff_value_adjust *adjust;
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for (adjust = input_debug->adjust;
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adjust != (struct ecoff_value_adjust *) NULL;
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adjust = adjust->next)
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if (fdr_adr >= adjust->start
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&& fdr_adr < adjust->end)
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fdr.adr += adjust->adjust;
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}
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/* FIXME: It is conceivable that this FDR points to the .init or
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.fini section, in which case this will not do the right
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thing. */
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@ -856,19 +842,6 @@ bfd_ecoff_debug_accumulate (handle, output_bfd, output_debug, output_swap,
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case stLabel:
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case stProc:
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case stStaticProc:
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if (input_debug->adjust != (struct ecoff_value_adjust *) NULL)
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{
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bfd_vma value;
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struct ecoff_value_adjust *adjust;
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value = internal_sym.value;
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for (adjust = input_debug->adjust;
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adjust != (struct ecoff_value_adjust *) NULL;
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adjust = adjust->next)
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if (value >= adjust->start
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&& value < adjust->end)
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internal_sym.value += adjust->adjust;
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}
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internal_sym.value += section_adjust[internal_sym.sc];
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break;
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@ -978,9 +951,8 @@ bfd_ecoff_debug_accumulate (handle, output_bfd, output_debug, output_swap,
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output_symhdr->issMax += fdr.cbSs;
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}
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if ((output_bfd->xvec->header_byteorder
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== input_bfd->xvec->header_byteorder)
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&& input_debug->adjust == (struct ecoff_value_adjust *) NULL)
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if (output_bfd->xvec->header_byteorder
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== input_bfd->xvec->header_byteorder)
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{
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/* The two BFD's have the same endianness, and we don't have
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to adjust the PDR addresses, so simply copying the
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@ -1036,23 +1008,6 @@ bfd_ecoff_debug_accumulate (handle, output_bfd, output_debug, output_swap,
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PDR pdr;
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(*input_swap->swap_pdr_in) (input_bfd, (PTR) in, &pdr);
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/* If we have been relaxing, we may have to adjust the
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address. */
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if (input_debug->adjust != (struct ecoff_value_adjust *) NULL)
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{
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bfd_vma adr;
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struct ecoff_value_adjust *adjust;
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adr = fdr_adr + pdr.adr;
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for (adjust = input_debug->adjust;
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adjust != (struct ecoff_value_adjust *) NULL;
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adjust = adjust->next)
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if (adr >= adjust->start
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&& adr < adjust->end)
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pdr.adr += adjust->adjust;
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}
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(*output_swap->swap_pdr_out) (output_bfd, &pdr, (PTR) out);
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}
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@ -809,7 +809,6 @@ _bfd_mips_elf_read_ecoff_info (bfd *abfd, asection *section,
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#undef READ
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debug->fdr = NULL;
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debug->adjust = NULL;
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return TRUE;
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@ -176,41 +176,13 @@ typedef struct ecoff_symbol_struct
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#define ecoff_get_sym_index(symbol) ((symbol)->udata.i)
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#define ecoff_set_sym_index(symbol, idx) ((symbol)->udata.i = (idx))
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/* When generating MIPS embedded PIC code, the linker relaxes the code
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to turn PC relative branches into longer code sequences when the PC
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relative branch is out of range. This involves reading the relocs
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in bfd_relax_section as well as in bfd_final_link, and requires the
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code to keep track of which relocs have been expanded. A pointer
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to this structure is put in the used_by_bfd pointer of a section to
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keep track of this information. The user_by_bfd pointer will be
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NULL if the information was not needed. */
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/* A pointer to this structure is put in the used_by_bfd pointer of
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a section to keep track of any per-section data.
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The user_by_bfd pointer will be NULL if the information was not
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needed. */
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struct ecoff_section_tdata
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{
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/* The unswapped relocs for this section. These are stored in
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memory so the input file does not have to be read twice. */
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PTR external_relocs;
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/* The contents of the section. These bytes may or may not be saved
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in memory, but if it is this is a pointer to them. */
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bfd_byte *contents;
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/* Offset adjustments for PC relative branches. A number other than
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1 is an addend for a PC relative branch, or a switch table entry
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which is the difference of two .text locations; this addend
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arises because the branch or difference crosses one or more
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branches which were expanded into a larger code sequence. A 1
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means that this branch was itself expanded into a larger code
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sequence. 1 is not a possible offset, since all offsets must be
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multiples of the instruction size, which is 4; also, the only
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relocs with non-zero offsets will be PC relative branches or
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switch table entries within the same object file. If this field
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is NULL, no branches were expanded and no offsets are required.
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Otherwise there are as many entries as there are relocs in the
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section, and the entry for any reloc that is not PC relative is
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zero. */
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long *offsets;
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/* When producing an executable (i.e., final, non-relocatable link)
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on the Alpha, we may need to use multiple global pointer values
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to span the entire .lita section. In essence, we allow each
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@ -41,16 +41,6 @@ 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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#if 0
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static void mips_ecoff_swap_reloc_in
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PARAMS ((bfd *, PTR, struct internal_reloc *));
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static void mips_ecoff_swap_reloc_out
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PARAMS ((bfd *, const struct internal_reloc *, PTR));
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static void mips_adjust_reloc_in
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PARAMS ((bfd *, const struct internal_reloc *, arelent *));
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static void mips_adjust_reloc_out
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PARAMS ((bfd *, const arelent *, struct internal_reloc *));
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#endif
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static bfd_boolean in_reloc_p
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PARAMS ((bfd *, reloc_howto_type *));
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@ -534,20 +524,6 @@ coff_mips_reloc_type_lookup (abfd, code)
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case BFD_RELOC_MIPS_LITERAL:
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mips_type = MIPS_R_LITERAL;
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break;
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/* FIXME?
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case BFD_RELOC_16_PCREL_S2:
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mips_type = MIPS_R_PCREL16;
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break;
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case BFD_RELOC_PCREL_HI16_S:
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mips_type = MIPS_R_RELHI;
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break;
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case BFD_RELOC_PCREL_LO16:
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mips_type = MIPS_R_RELLO;
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break;
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case BFD_RELOC_GPREL32:
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mips_type = MIPS_R_SWITCH;
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break;
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*/
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case BFD_RELOC_RVA:
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mips_type = MIPS_R_RVA;
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break;
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@ -1,3 +1,10 @@
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2004-04-23 Chris Demetriou <cgd@broadcom.com>
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* mips.h (MIPS_R_RELHI, MIPS_R_RELLO, MIPS_R_SWITCH): Remove
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(MIPS_R_PCREL16): Update comment.
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* ecoff.h (struct ecoff_value_adjust): Remove structure.
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(struct ecoff_debug_info): Remove 'adjust' member.
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2004-04-20 DJ Delorie <dj@redhat.com>
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* internal.h (R_SECREL32): Add.
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@ -322,34 +322,6 @@ struct ecoff_debug_info
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this changes in the future. This is a pointer to an array, not a
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single structure. */
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FDR *fdr;
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/* When relaxing MIPS embedded PIC code, we may need to adjust
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symbol values when they are output. This is a linked list of
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structures indicating how values should be adjusted. There is no
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requirement that the entries be in any order, or that they not
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overlap. This field is normally NULL, in which case no
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adjustments need to be made. */
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struct ecoff_value_adjust *adjust;
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};
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/* This structure describes how to adjust symbol values when
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outputting MIPS embedded PIC code. These adjustments only apply to
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the internal symbols, as the external symbol values will come from
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the hash table and have already been adjusted. */
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struct ecoff_value_adjust
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{
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/* Next entry on adjustment list. */
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struct ecoff_value_adjust *next;
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/* Starting VMA of adjustment. This is the VMA in the ECOFF file,
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not the offset from the start of the section. Thus it should
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indicate a particular section. */
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bfd_vma start;
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/* Ending VMA of adjustment. */
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bfd_vma end;
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/* Adjustment. This should be added to the value of the symbol, or
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FDR. This is zero for the last entry in the array. */
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long adjust;
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};
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/* These structures are used by the ECOFF find_nearest_line function. */
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@ -105,34 +105,10 @@ struct external_reloc
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#define MIPS_R_GPREL 6
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#define MIPS_R_LITERAL 7
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/* These reloc types are a Cygnus extension used when generating
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position independent code for embedded systems. The numbers are
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taken from Irix 4, but at least for internal relocs Irix 5 does not
|
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give them the same meaning. For an internal reloc the symbol index
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of RELHI and RELLO is modified as described below for
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MIPS_R_SWITCH. */
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/* FIXME: This relocation is used (internally only) to represent branches
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when assembling. It should never appear in output files, and
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be removed. (It used to be used for embedded-PIC support.) */
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#define MIPS_R_PCREL16 12
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#define MIPS_R_RELHI 13
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#define MIPS_R_RELLO 14
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/* This reloc type is a Cygnus extension used when generating position
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independent code for embedded systems. It is used for an entry in
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a switch table, which looks like this:
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.word $L3-$LS12
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The object file will contain the correct difference, and does not
|
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require adjustment. However, when the linker is relaxing PC
|
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relative calls, it is possible for $L3 to move farther away. This
|
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reloc always appears in the .text section, and is always against
|
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the .text section. However, the symbol index is not
|
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RELOC_SECTION_TEXT. It is, instead, the distance between this
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switch table entry and $LS12. Thus, the original value of $L12 is
|
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vaddr - symndx
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and the original value of $L3 is
|
||||
vaddr - symndx + addend
|
||||
where addend is the value in the object file. Knowing this, the
|
||||
linker can know whether the addend in the object file must be
|
||||
adjusted. */
|
||||
#define MIPS_R_SWITCH 22
|
||||
|
||||
/********************** STABS **********************/
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user