Age | Commit message (Collapse) | Author | Files | Lines |
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on relocs to section+offset.
(get_frag_for_reloc): New function.
(write_relocs): Merge sort fixup relocs with those from .reloc
directives.
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2011-08-04 H.J. Lu <hongjiu.lu@intel.com>
PR gas/13056
* output-file.c (output_file_close): Call bfd_cache_close_all
on error.
* write.c (write_object_file): Revert the last change.
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errors.
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* write.c (write_relocs): Fix -Wshadow in DEBUG3 and DEBUG4.
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* read.c (s_comm_internal): Remove code for OBJ_VMS.
(s_data): Ditto.
(s_text): Ditto.
* write.c (write_object_file): Ditto.
* symbols.c (define_sym_at_dot): Ditto.
(colon): Ditto.
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value when reporting the inability to write to the output file.
* config/tc-rx.c (rx_handle_align): Do not insert NOPs into align
frag that has a non-zero fill value.
* gas/all/align.d: Skip for the RX.
* gas/elf/group1a.d: Likewise.
* gas/elf/groupautoa.d: Likewise.
* gas/elf/elf.exp: Do not run section5 test for the RX port.
* gas/elf/section4.d: Likewise.
* gas/elf/section7.d: Likewise.
* gas/macros/semi.s: Fill with a non-zero pattern.
* gas/macros/semi.d: Expect non-zero fill value.
* gas/rx/bcnd.d: Update expected disassembly.
* gas/rx/bra.d: Likewise.
* gas/rx/macros.inc: Add reg1 macro.
* gas/rx/max.sm: Use reg1 macro to avoid generating illegal NOP
instruction.
* gas/rx/mov.sm: Likewise.
* gas/rx/max.d: Update expected disassembly.
* gas/rx/mov.d: Likewise.
* gas/rx/rx-asm-good.s: Use Renesas section names.
* gas/rx/rx-asm-good.d: Update expected disassembly.
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2011-01-18 H.J. Lu <hongjiu.lu@intel.com>
* write.c (compress_debug): Return if section size is small than
32 byte.
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gas/
2011-01-18 H.J. Lu <hongjiu.lu@intel.com>
PR gas/12409
* write.c (compress_debug): Return if section size is 0.
gas/testsuite/
2011-01-18 H.J. Lu <hongjiu.lu@intel.com>
PR gas/12409
* gas/elf/dwarf2-4.d: New.
* gas/elf/dwarf2-4.s: Likewise.
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* symbols.c (S_FORCE_RELOC): Return true for indirect functions
even if !strict.
* expr.c (operand): Don't convert absolute symbols to constants
if S_FORCE_RELOC is true.
(expr): Only reduce subtractions between different symbols if
S_FORCE_RELOC is false for both of them.
* write.c (fixup_segment): Don't remove symbols if S_FORCE_RELOC
is true for them, regardless of their segment.
gas/testsuite/
* gas/i386/ifunc-2.s, gas/i386/ifunc-2.l: New test.
* gas/i386/ifunc-3.s, gas/i386/ifunc-3.d: Likeise.
* gas/i386/i386.exp: Run them.
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bfd/
2010-10-29 H.J. Lu <hongjiu.lu@intel.com>
Cary Coutant <ccoutant@google.com>
* archive.c (bfd_openr_next_archived_file): Copy BFD_COMPRESS
and BFD_DECOMPRESS.
* bfd.c (BFD_COMPRESS): New.
(BFD_DECOMPRESS): Likewise.
(BFD_FLAGS_SAVED): Likewise.
(bfd_preserve_save): Replace BFD_IN_MEMORY with BFD_FLAGS_SAVED.
* compress.c (bfd_uncompress_section_contents): Removed.
(get_uncompressed_size): New.
(decompress_contents): Likewise.
(bfd_compress_section_contents): Likewise.
(bfd_get_full_section_contents): Likewise.
(bfd_is_section_compressed): Likewise.
(bfd_init_section_decompress_status): Likewise.
(bfd_init_section_compress_status): Likewise.
* dwarf2.c (dwarf_debug_sections): New.
(dwarf_debug_section_enum): Likewise.
(read_section): Remove section_name and compressed_section_name.
Add dwarf_debug_section_enum. Try compressed debug section.
(read_indirect_string): Updated.
(read_abbrevs): Likewise.
(decode_line_info): Likewise.
(read_debug_ranges): Likewise.
(find_line): Updated.
* ecoff.c (bfd_debug_section): Add compress_status and
compressed_size.
* elf.c (_bfd_elf_make_section_from_shdr): Call
bfd_is_section_compressed to check if a DWARF debug section is
compressed. Call bfd_init_section_compress_status or
bfd_init_section_decompress_status if needed.
* elflink.c (elf_link_input_bfd): Replace bfd_get_section_contents
with bfd_get_full_section_contents.
* merge.c (_bfd_add_merge_section): Likewise.
* reloc.c (bfd_generic_get_relocated_section_contents): Likewise.
* simple.c (bfd_simple_get_relocated_section_contents): Likewise.
* elfxx-target.h (TARGET_BIG_SYM): Allow BFD_COMPRESS and
BFD_DECOMPRESS.
(TARGET_LITTLE_SYM): Likewise.
* libbfd-in.h (dwarf_debug_section): New.
(dwarf_debug_sections): Likewise.
* libbfd.c (_bfd_generic_get_section_contents): Issue an error
when getting contents on compressed/decompressed section.
* section.c (COMPRESS_SECTION_NONE): New.
(COMPRESS_SECTION_DONE): Likewise.
(DECOMPRESS_SECTION_SIZED): Likewise.
(BFD_FAKE_SECTION): Add compress_status and compressed_size.
(bfd_malloc_and_get_section): Replace bfd_get_section_contents
with bfd_get_full_section_contents.
* bfd-in2.h: Regenerated.
* libbfd.h: Likewise.
binutils/
2010-10-29 H.J. Lu <hongjiu.lu@intel.com>
* addr2line.c (process_file): Set BFD_DECOMPRESS.
* objcopy.c (do_debug_sections): New.
(OPTION_COMPRESS_DEBUG_SECTIONS): New.
(OPTION_DECOMPRESS_DEBUG_SECTIONS): Likewise.
(copy_options): Add OPTION_COMPRESS_DEBUG_SECTIONS and
OPTION_DECOMPRESS_DEBUG_SECTIONS.
(copy_usage): Add --compress-debug-sections and
--decompress-debug-sections.
(copy_file): Set BFD_COMPRESS or BFD_DECOMPRESS.
(copy_section): Replace bfd_get_section_contents with
bfd_get_full_section_contents.
(copy_main): Handle OPTION_COMPRESS_DEBUG_SECTIONS and
OPTION_DECOMPRESS_DEBUG_SECTIONS. Check do_debug_sections to
rename DWARF debug sections.
* objdump.c (load_specific_debug_section): Replace
bfd_get_section_contents with bfd_get_full_section_contents.
Remove bfd_uncompress_section_contents.
(dump_section): Replace bfd_get_section_contents with
bfd_get_full_section_contents.
(display_file): Set BFD_DECOMPRESS if needed.
* readelf.c (uncompress_section_contents): Set buffer to NULL
to indiate decompression failure.
(load_specific_debug_section): Always call
uncompress_section_contents.
* doc/binutils.texi: Document --compress-debug-sections and
--decompress-debug-sections.
binutils/testsuite/
2010-10-29 H.J. Lu <hongjiu.lu@intel.com>
* binutils-all/compress.exp: New.
* binutils-all/dw2-1.S: Likewise.
* binutils-all/dw2-2.S: Likewise.
* binutils-all/libdw2-compressed.out: Likewise.
* binutils-all/libdw2.out: Likewise.
gas/
2010-10-29 H.J. Lu <hongjiu.lu@intel.com>
* write.c (compress_debug): Optimize section flags check.
gas/testsuite/
2010-10-29 H.J. Lu <hongjiu.lu@intel.com>
* elf/dwarf2-1.s: Replace .zdebug_abbrev section with
.debug_abbrev section.
* elf/dwarf2-2.3: Likewise.
* elf/dwarf2-1.d: Pass --compress-debug-sections to assembler.
Updated.
* elf/dwarf2-2.d: Likewise.
* gas/i386/i386.exp: Remove xfail on dw2-compress-2 and
x86-64-dw2-compress-2.
ld/
2010-10-29 H.J. Lu <hongjiu.lu@intel.com>
* ldfile.c (ldfile_try_open_bfd): Set BFD_DECOMPRESS after
bfd_openr returns.
* emultempl/elf32.em (gld${EMULATION_NAME}_try_needed): Likewise.
* scripttempl/elf.sc: Include compressed DWARF debug sections.
ld/testsuite/
2010-10-29 H.J. Lu <hongjiu.lu@intel.com>
* ld-elf/compress.exp: New.
* ld-elf/compress1.s: Likewise.
* ld-elf/compress1a.d: Likewise.
* ld-elf/compress1b.d: Likewise.
* ld-elf/compress1c.d: Likewise.
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* write.c (relax_frag): Don't allow forward branches to temporarily
becomde backward branches.
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leb128/align frags bouncing.
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* frags.h (struct frag): Add "region" field.
* write.c (relax_frag): Don't add "stretch" to forward reference
target if there is an intervening org or align.
(relax_segment): Set region.
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* compress.c (bfd_uncompress_section_contents): Add ATTRIBUTE_UNUSED.
* dwarf2.c (read_and_uncompress_section): New function.
(read_section): Call it.
(find_line): Likewise.
binutils/ChangeLog:
* objdump.c (load_specific_debug_section): Decompress section contents
before applying relocations.
* readelf.c (load_specific_debug_section): Update section size after
decompression.
gas/ChangeLog:
* Makefile.am: Add compress-debug.c and compress-debug.h.
* Makefile.in: Regenerate.
* config.in: Add HAVE_ZLIB_H.
* configure.in: Check for zlib.h.
* configure: Regenerate.
* as.c (parse_args): Add --compress-debug-sections and
--nocompress-debug-sections.
* as.h (flag_compress_debug): New variable.
* compress-debug.c: New file.
* compress-debug.h: New file.
* write.c: Include compress-debug.h.
(compress_frag): New function.
(compress_debug): New function.
(write_object_file): Compress debug sections if requested.
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* config/tc-arm.h (TC_FORCE_RELOCATION_LOCAL): Also force the
generation of relocations for fixups against weak symbols.
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defined weak symbol is in.
* config/tc-arm.c (relax_adr, relax_branch, md_apply_fix): Treat
weak symbols as not known to be in the same section, even if they
are defined.
* gas/arm/weakdef-1.s: New.
* gas/arm/weakdef-1.d: New.
* gas/arm/weakdef-2.s: New.
* gas/arm/weakdef-2.d: New.
* gas/arm/weakdef-2.l: New.
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* coff-rs6000.c (xcoff_howto_table): Change size to 0 and bitsize to 1.
(_bfd_xcoff_reloc_type_lookup): Handle BFD_RELOC_NONE.
* coff64-rs6000.c (xcoff64_howto_table): Change size to 0 and
bitsize to 1.
(xcoff64_reloc_type_lookup): Handle BFD_RELOC_NONE.
gas/
* write.h (fix_at_start): Declare.
* write.c (fix_new_internal): Add at_beginning parameter.
Use it instead of REVERSE_SORT_RELOCS. Fix the handling of
seg_fix_tailP for the at_beginning/REVERSE_SORT_RELOCS case.
(fix_new, fix_new_exp): Update accordingly.
(fix_at_start): New function.
* config/tc-ppc.c (md_pseudo_table): Add .ref to the OBJ_XCOFF section.
(ppc_ref): New function, for OBJ_XCOFF.
(md_apply_fix): Handle BFD_RELOC_NONE for OBJ_XCOFF.
* config/te-i386aix.h (REVERSE_SORT_RELOCS): Remove #undef.
gas/testsuite/
* gas/ppc/xcoff-ref-1.s, gas/ppc/xcoff-ref-1.l: New test.
* gas/ppc/aix.exp: Run it.
ld/testsuite/
* ld-powerpc/aix-ref-1-32.od, ld-powerpc/aix-ref-1-64.od,
ld-powerpc/aix-ref-1.s: New tests.
* ld-powerpc/aix52.exp: Run them.
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Fix up all warnings generated by the addition of this switch.
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* po/binutils.pot: Updated by the Translation project.
* po/gold.pot: Updated by the Translation project.
* po/gold.pot: Updated by the Translation project.
* po/gprof.pot: Updated by the Translation project.
* po/sv.po: Updated Swedish translation.
* po/ld.pot: Updated by the Translation project.
* po/fi.po: Updated Finnish translation.
* po/ld.pot: Updated by the Translation project.
* po/fi.po: Updated Finnish translation.
Updated sources to compile cleanly with -Wc++-compat:
* basic_blocks.c: Add casts.
* cg_dfn.c: Add cast.
* corefile.c: Add casts.
* gmon_io.c: Add casts.
* hist.c: Add cast.
* source.c: Add cast.
* sym_ids.c (struct match): Moved to top level.
Updated soruces in ld/* to compile cleanly with -Wc++-compat:
* ld.h (enum endian_enum,enum symbolic_enum,enum dynamic_list_enum): Move to top level.
* ldcref.c: Add casts.
* ldctor.c: Add casts.
* ldexp.c
* ldexp.h (enum node_tree_enum,enum phase_enum): Move to top level.
* ldlang.c: Add casts. (lang_insert_orphan): Use enum name instead of integer.
* ldlang.h (enum statement_enum): Move to top level.
* ldmain.c: Add casts.
* ldwrite.c: Add casts.
* lexsup.c: Add casts. (enum control_enum): Move to top level.
* mri.c: Add casts. (mri_draw_tree): Use enum name instead of integer.
Updated sources to compile cleanly with -Wc++-compat:
* basic_blocks.c: Add casts.
* cg_dfn.c: Add cast.
* corefile.c: Add casts.
* gmon_io.c: Add casts.
* hist.c: Add cast.
* source.c: Add cast.
* sym_ids.c (struct match): Moved to top level.
* as.c (main): Call dwarf2_init.
* config/obj-elf.c (struct group_list): New field.
(build_group_lists): Use hash lookup.
(free_section_idx): New function.
(elf_frob_file): Adjust.
* dwarf2dbg.c (all_segs_hash, last_seg_ptr): New variables.
(get_line_subseg): Adjust.
(dwarf2_init): New function.
* dwarf2dbg.h (dwarf2_init): New declaration.
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PR gas/10570
* write.c (write_object_file): Revert the accidental change
made in revision 1.124 on 2009-08-17.
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* config/obj-coff-seh.c: New file.
* config/obj-coff-seh.h: Likewise.
* config/obj-coff.c (obj-coff-seh.c): Add include.
(coff_pseudo_table): Add new .seh... commands.
* config/obj-coff.h (obj_coff_seh_do_final): Add new
function prototype.
(obj_coff_generate_pdata): New obj-coff hook.
* gas/write.c (size_seg): Avoid sizing of already sized
sections.
(write_object_file): Call conditional hook
objc_coff_generate_pdata.
* Makefile.am: Add dependencies for new files.
* Makefile.in: Regenerated.
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gas/config/atof-ieee.c, gas/config/obj-aout.c,
gas/config/obj-coff.c, gas/config/obj-ecoff.c,
gas/config/obj-elf.c, gas/config/obj-som.c, gas/config/tc-alpha.c,
gas/config/tc-arc.c, gas/config/tc-arm.c, gas/config/tc-cr16.c,
gas/config/tc-cris.c, gas/config/tc-crx.c, gas/config/tc-d30v.c,
gas/config/tc-dlx.c, gas/config/tc-hppa.c, gas/config/tc-i370.c,
gas/config/tc-i386-intel.c, gas/config/tc-i386.c,
gas/config/tc-i860.c, gas/config/tc-i960.c, gas/config/tc-ia64.c,
gas/config/tc-iq2000.c, gas/config/tc-m32c.c,
gas/config/tc-m32r.c, gas/config/tc-m68hc11.c,
gas/config/tc-m68k.c, gas/config/tc-maxq.c, gas/config/tc-mcore.c,
gas/config/tc-mep.c, gas/config/tc-mips.c, gas/config/tc-mmix.c,
gas/config/tc-mn10300.c, gas/config/tc-moxie.c,
gas/config/tc-ns32k.c, gas/config/tc-pj.c, gas/config/tc-ppc.c,
gas/config/tc-s390.c, gas/config/tc-score.c,
gas/config/tc-score7.c, gas/config/tc-sh.c, gas/config/tc-sparc.c,
gas/config/tc-spu.c, gas/config/tc-tic30.c, gas/config/tc-vax.c,
gas/config/tc-xtensa.c, gas/config/xtensa-relax.c,
gas/dw2gencfi.c, gas/dwarf2dbg.c, gas/ehopt.c, gas/expr.c,
gas/frags.c, gas/input-file.c, gas/read.c, gas/sb.c,
gas/subsegs.c, gas/symbols.c, gas/write.c: Change the name of the
gas macro `assert' to `gas_assert'.
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the jump table for multiple overflowing entries with the same
target, handle base symbols being different.
(relax_segment) <case rs_broken_word, second loop>: Whenever a
single entry overflows, arrange to redirect all entries with the
same target.
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(TC_VALIDATE_FIX_SUB): Likewise.
* config/tc-frv.h (TC_FORCE_RELOCATION_SUB_LOCAL): Likewise.
* config/tc-hppa.h (TC_FORCE_RELOCATION_SUB_LOCAL): Likewise.
* config/tc-mn10300.h (TC_VALIDATE_FIX_SUB): Likewise.
* config/tc-sh.h (TC_VALIDATE_FIX_SUB): Likewise.
(TC_FORCE_RELOCATION_SUB_LOCAL): Likewise.
* config/tc-sh64.h (TC_VALIDATE_FIX_SUB): Likewise.
* config/tc-xtensa.h (TC_VALIDATE_FIX_SUB): Likewise.
* doc/internals.texi (TC_FORCE_RELOCATION_SUB_ABS,
TC_FORCE_RELOCATION_SUB_LOCAL, TC_VALIDATE_FIX_SUB): Show new param.
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(fixup_segment): Adjust TC_FORCE_RELOCATION_SUB_ABS invocation.
Modify error message when registers involved.
(TC_FORCE_RELOCATION_SUB_ABS): Heed md_register_arithmetic.
* config/tc-sh.h (TC_FORCE_RELOCATION_SUB_ABS): Likewise.
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* write.c (install_reloc): Check that reloc symbols have been
written.
(set_symtab): Mark symbols with BSF_KEEP.
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value when calculating whether .org is backwards.
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2008-03-03 Denys Vlasenko <vda.linux@googlemail.com>
H.J. Lu <hongjiu.lu@intel.com>
PR gas/5543
* read.c (pseudo_set): Don't allow global register symbol.
* symbols.c (S_SET_EXTERNAL): Don't allow register symbol
global.
2008-03-03 H.J. Lu <hongjiu.lu@intel.com>
PR gas/5543
* write.c (write_object_file): Don't allow symbols which were
equated to register. Stop if there is an error.
gas/testsuite/
2008-03-03 H.J. Lu <hongjiu.lu@intel.com>
PR gas/5543
* gas/i386/i386.exp: Run inval-equ-1 and inval-equ-2.
* gas/i386/inval-equ-1.l: New.
* gas/i386/inval-equ-1.s: Likewise.
* gas/i386/inval-equ-2.l: Likewise.
* gas/i386/inval-equ-2.s: Likewise.
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* read.c (potable): Add "reloc".
(s_reloc): New function.
* write.c (reloc_list): New global var.
(resolve_reloc_expr_symbols): New function.
(write_object_file): Call it.
(write_relocs): Process reloc_list.
* write.h (struct reloc_list): New.
(reloc_list): Declare.
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* write.c (relax_segment): Insert extra alignment padding
to break infinite relax loop when given impossible
gcc_except_table assembly.
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(install_reloc): New function, extracted from..
(write_relocs): ..here. Combine RELOC_EXPANSION_POSSIBLE code
with !RELOC_EXPANSION_POSSIBLE code. Don't add fr_offset when
testing frag size. Set SEC_RELOC here.
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(write_relocs): Reinstate check for fixup within frag.
* config/tc-bfin.h (TC_FX_SIZE_SLACK): Define.
* config/tc-h8300.h (TC_FX_SIZE_SLACK): Define.
* config/tc-mmix.h (TC_FX_SIZE_SLACK): Define.
* config/tc-sh.h (TC_FX_SIZE_SLACK): Define.
* config/tc-xstormy16.h (TC_FX_SIZE_SLACK): Define.
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(fixup_segment): Move symbol_mri_common_p adjustments..
(write_relocs): ..and symbol_equated_reloc_p adjustments..
(adjust_reloc_syms): ..to here.
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xmalloc, memset. Don't bother assigning NULL to known zero mem.
(subseg_set_rest): Remove unnecessary cast.
* write.c: Include libbfd.h. Replace PTR with void * throughout.
Remove unnecessary forward declarations and casts.
(set_symtab): Delete extern bfd_alloc.
(fixup_segment): Move.
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(struct fix <fx_plt>): Rename to tcbit2.
* write.c (fix_new_internal): Adjust.
(TC_FORCE_RELOCATION_LOCAL): Don't test fx_plt.
* config/tc-arm.h (TC_FORCE_RELOCATION_LOCAL): Likewise.
* config/tc-cris.h (TC_FORCE_RELOCATION_LOCAL): Likewise.
* config/tc-i386.h (TC_FORCE_RELOCATION_LOCAL): Likewise.
* config/tc-i960.h (TC_FORCE_RELOCATION_LOCAL): Likewise.
* config/tc-sh.h (TC_FORCE_RELOCATION_LOCAL): Likewise.
* config/tc-sh64.h (TC_FORCE_RELOCATION_LOCAL): Likewise.
* config/tc-sparc.h (TC_FORCE_RELOCATION_LOCAL): Likewise.
* config/tc-msp430.c (msp430_force_relocation_local): Likewise.
* config/tc-ia64.c (emit_one_bundle): Don't set fx_plt.
* config/tc-ia64.h (TC_FORCE_RELOCATION_LOCAL): Don't test fx_plt.
Instead, compare fx_r_type.
* config/tc-xtensa.c (xg_add_opcode_fix, md_apply_fix): Use
fx_tcbit in place of fx_plt.
* config/tc-xtensa.h (TC_FORCE_RELOCATION_LOCAL): Define.
* doc/internals.texi (TC_FORCE_RELOCATION_LOCAL): Remove reference
to fx_plt.
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never returns a pointer to the auto variable `dummy'.
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* gdbinit.in (as_perror): Delete breakpoint.
* messages.c (as_perror): Delete function.
* doc/internals.texi: Remove as_perror description.
* listing.c (listing_print: Don't use as_perror.
* output-file.c (output_file_create, output_file_close): Likewise.
* symbols.c (symbol_create, symbol_clone): Likewise.
* write.c (write_contents): Likewise.
* config/obj-som.c (obj_som_version, obj_som_copyright): Likewise.
* config/tc-tic54x.c (tic54x_mlib): Likewise.
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negative org/space on first two passes.
(relax_seg_info): New struct.
(relax_seg, write_object_file): Adjust.
* write.h (relax_segment): Update prototype.
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(frchain_root): Delete.
(seg_info): Define as macro.
* subsegs.c (frchain_root): Delete.
(abs_seg_info, und_seg_info, absolute_frchain): Delete.
(subsegs_begin, subseg_change): Adjust for above.
(subseg_set_rest): Likewise. Add new frchain structs to seginfo
rather than to one big list.
(subseg_get): Don't special case abs, und sections.
(subseg_new, subseg_force_new): Don't set frchainP here.
(seg_info): Delete.
(subsegs_print_statistics): Adjust frag chain control list traversal.
* debug.c (dmp_frags): Likewise.
* dwarf2dbg.c (first_frag_for_seg): Don't start looking for frag
at frchain_root. Make use of known frchain ordering.
(last_frag_for_seg): Likewise.
(get_frag_fix): Likewise. Add seg param.
(process_entries, out_debug_aranges): Adjust get_frag_fix calls.
* write.c (chain_frchains_together_1): Adjust for struct frchain.
(SUB_SEGMENT_ALIGN): Likewise.
(subsegs_finish): Adjust frchain list traversal.
* config/tc-xtensa.c (xtensa_cleanup_align_frags): Likewise.
(xtensa_fix_target_frags, xtensa_mark_narrow_branches): Likewise.
(xtensa_mark_zcl_first_insns, xtensa_fix_a0_b_retw_frags): Likewise.
(xtensa_fix_b_j_loop_end_frags): Likewise.
(xtensa_fix_close_loop_end_frags): Likewise.
(xtensa_fix_short_loop_frags, xtensa_sanity_check): Likewise.
(retrieve_segment_info): Delete frch_seg initialisation.
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dotname.
* write.c (write_object_file): Do not remove used weakrefd.
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(s_mri_common): Likewise.
* write.c (write_object_file): Remove non-BFD assembler common
sym handling.
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* write.c (adjust_reloc_syms): Undo the change made on
2005-04-26 to allow local symbol set to undefined symbol.
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* read.c (potable): Add weakref.
(s_weakref): New.
* read.h (s_weakref): Declare.
* struc-symbol.h (struct symbol): Add sy_weakrefr and sy_weakrefd.
* symbols.c (colon): Clear weakrefr.
(symbol_find_exact): Rename to, and reimplement in terms of...
(symbol_find_exact_noref): ... new function.
(symbol_find): Likewise...
(symbol_find_noref): ... ditto.
(resolve_symbol_value): Resolve weakrefr without setting their
values.
(S_SET_WEAK): Call hook.
(S_GET_VALUE): Follow weakref link.
(S_SET_VALUE): Clear weakrefr.
(S_IS_WEAK): Follow weakref link.
(S_IS_WEAKREFR, S_SET_WEAKREFR, S_CLEAR_WEAKREFR): New.
(S_IS_WEAKREFD, S_SET_WEAKREFD, S_CLEAR_WEAKREFD): New.
(symbol_set_value_expression, symbol_set_frag): Clear weakrefr.
(symbol_mark_used): Follow weakref link.
(print_symbol_value_1): Print weak, weakrefr and weakrefd.
* symbols.h (symbol_find_noref, symbol_find_exact_noref): Declare.
(S_IS_WEAKREFR, S_SET_WEAKREFR, S_CLEAR_WEAKREFR): Declare.
(S_IS_WEAKREFD, S_SET_WEAKREFD, S_CLEAR_WEAKREFD): Declare.
* write.c (adust_reloc_syms): Follow weakref link. Do not
complain if target is undefined.
(write_object_file): Likewise. Remove weakrefr symbols. Drop
unreferenced weakrefd symbols.
* config/obj-coff.c (obj_frob_symbol): Do not force WEAKREFD
symbols EXTERNAL.
(pecoff_obj_set_weak_hook, pecoff_obj_clear_weak_hook): New.
* config/obj-coff.h (obj_set_weak_hook, obj_clear_weak_hook): Define.
* doc/as.texinfo: Document weakref.
* doc/internals.texi: Document new struct members, internal
functions and hooks.
gas/testsuite/ChangeLog:
* gas/all/weakref1.s, gas/all/weakref1.d: New test.
* gas/all/weakref1g.d, gas/all/weakref1l.d: New tests.
* gas/all/weakref1u.d, gas/all/weakref1w.d: New tests.
* gas/all/weakref2.s, gas/all/weakref3.s: New tests.
* gas/all/gas.exp: Run new tests.
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