Add a release note for the Linux binutils 2.22.51.0.1.
diff --git a/release.binutils-2.22.51.0.1 b/release.binutils-2.22.51.0.1
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+This is the beta release of binutils 2.22.51.0.1 for Linux, which is
+based on binutils 2011 1115 in CVS on sourceware.org plus various
+changes. It is purely for Linux.
+
+All relevant patches in patches have been applied to the source tree.
+You can take a look at patches/README to see what have been applied and
+in what order they have been applied.
+
+Starting from the 2.21.51.0.3 release, you must remove .ctors/.dtors
+section sentinels when building glibc or other C run-time libraries.
+Otherwise, you will run into:
+
+http://sourceware.org/bugzilla/show_bug.cgi?id=12343
+
+Starting from the 2.21.51.0.2 release, BFD linker has the working LTO
+plugin support. It can be used with GCC 4.5 and above. For GCC 4.5, you
+need to configure GCC with --enable-gold to enable LTO plugin support.
+
+Starting from the 2.21.51.0.2 release, binutils fully supports compressed
+debug sections. However, compressed debug section isn't turned on by
+default in assembler. I am planning to turn it on for x86 assembler in
+the future release, which may lead to the Linux kernel bug messages like
+
+WARNING: lib/ts_kmp.o (.zdebug_aranges): unexpected non-allocatable section.
+
+But the resulting kernel works fine.
+
+Starting from the 2.20.51.0.4 release, no diffs against the previous
+release will be provided.
+
+You can enable both gold and bfd ld with --enable-gold=both. Gold will
+be installed as ld.gold and bfd ld will be installed as ld.bfd. By
+default, ld.bfd will be installed as ld. You can use the configure
+option, --enable-gold=both/gold to choose gold as the default linker,
+ld. IA-32 binary and X64_64 binary tar balls are configured with
+--enable-gold=both/ld --enable-plugins --enable-threads.
+
+Starting from the 2.18.50.0.4 release, the x86 assembler no longer
+accepts
+
+ fnstsw %eax
+
+fnstsw stores 16bit into %ax and the upper 16bit of %eax is unchanged.
+Please use
+
+ fnstsw %ax
+
+Starting from the 2.17.50.0.4 release, the default output section LMA
+(load memory address) has changed for allocatable sections from being
+equal to VMA (virtual memory address), to keeping the difference between
+LMA and VMA the same as the previous output section in the same region.
+
+For
+
+.data.init_task : { *(.data.init_task) }
+
+LMA of .data.init_task section is equal to its VMA with the old linker.
+With the new linker, it depends on the previous output section. You
+can use
+
+.data.init_task : AT (ADDR(.data.init_task)) { *(.data.init_task) }
+
+to ensure that LMA of .data.init_task section is always equal to its
+VMA. The linker script in the older 2.6 x86-64 kernel depends on the
+old behavior. You can add AT (ADDR(section)) to force LMA of
+.data.init_task section equal to its VMA. It will work with both old
+and new linkers. The x86-64 kernel linker script in kernel 2.6.13 and
+above is OK.
+
+The new x86_64 assembler no longer accepts
+
+ monitor %eax,%ecx,%edx
+
+You should use
+
+ monitor %rax,%ecx,%edx
+
+or
+ monitor
+
+which works with both old and new x86_64 assemblers. They should
+generate the same opcode.
+
+The new i386/x86_64 assemblers no longer accept instructions for moving
+between a segment register and a 32bit memory location, i.e.,
+
+ movl (%eax),%ds
+ movl %ds,(%eax)
+
+To generate instructions for moving between a segment register and a
+16bit memory location without the 16bit operand size prefix, 0x66,
+
+ mov (%eax),%ds
+ mov %ds,(%eax)
+
+should be used. It will work with both new and old assemblers. The
+assembler starting from 2.16.90.0.1 will also support
+
+ movw (%eax),%ds
+ movw %ds,(%eax)
+
+without the 0x66 prefix. Patches for 2.4 and 2.6 Linux kernels are
+available at
+
+http://www.kernel.org/pub/linux/devel/binutils/linux-2.4-seg-4.patch
+http://www.kernel.org/pub/linux/devel/binutils/linux-2.6-seg-5.patch
+
+The ia64 assembler is now defaulted to tune for Itanium 2 processors.
+To build a kernel for Itanium 1 processors, you will need to add
+
+ifeq ($(CONFIG_ITANIUM),y)
+ CFLAGS += -Wa,-mtune=itanium1
+ AFLAGS += -Wa,-mtune=itanium1
+endif
+
+to arch/ia64/Makefile in your kernel source tree.
+
+Please report any bugs related to binutils 2.22.51.0.1 to
+hjl.tools@gmail.com
+
+and
+
+http://www.sourceware.org/bugzilla/
+
+Changes from binutils 2.21.53.0.2:
+
+1. Update from binutils 2011 1118.
+2. Fix ar --plugin on archive with mixed IR/non-IR objects. PR 13298.
+3. Preserve the maximum alignment and size for common symbols. PR 13250.
+4. Fix LTO linker with -as-needed. PR 13287.
+5. Fix --plugin support on thin archive. PR 13257.
+6. Fix LTO linker on thin archive. PR 13183.
+7. Fix --plugin slim object support on archive. PR 13278.
+8. Support LDPR_PREVAILING_DEF_IRONLY_EXP in linker plugin. PR 13229.
+9. Don't make make IR symbols dynamic. PR 13244.
+10. Fix LTO linker with --as-needed. PR 13201.
+11. Properly handle 2 IR symbols with the same comdat key. PR 13066.
+12. Keep .debug_types sections with linker garbage collection. PR 13233.
+13. Fix -ffunction-sections -Wl,--gc-sections failure with symbol
+versioning. PR 13195.
+14. Improve linker garbage collection support. PR 13177.
+15. Remove symbols hidden by version scripts with --gc-sections. PR 12975.
+16. Remove unnecessary GOT relocation created for IFUNC. PR 13178.
+17. Move IRELATIVE relocations to the end. PR 13302.
+18. Avoid readelf core dump. PR 13219.
+19. Check zero address size when dumping DWARF sections. PR 13196.
+20. Remove the group section if all members are removed. PR 13180.
+21. Support R_X86_64_64 and R_X86_64_RELATIVE64 relocations for x32.
+PR 13082.
+22. Add Adapteva Epiphany support.
+23. Add Renesas RL78 support.
+24. Improve gold.
+25. Improve mach-o support.
+26. Improve alpha support.
+27. Improve arm support.
+28. Improve hppa support.
+29. Improve mips support.
+30. Improve ppc support.
+31. Improve rx support.
+32. Improve sparc support.
+
+Changes from binutils 2.21.53.0.1:
+
+1. Update from binutils 2011 0804.
+2. Add Intel K1OM support.
+3. Allow R_X86_64_64 relocation for x32 and check x32 relocation overflow.
+PR ld/13048.
+4. Support direct call in x86-64 assembly code. PR gas/13046.
+5. Add ia32 Google Native Client support.
+6. Add .debug_macro section support.
+7. Improve gold.
+8. Improve VMS support.
+9. Improve arm support.
+10. Improve hppa support.
+11. Improve mips support.
+12. Improve mmix support.
+13. Improve ppc support.
+
+Changes from binutils 2.21.52.0.2:
+
+1. Update from binutils 2011 0716.
+2. Fix LTO linker bugs. PRs 12982/12942.
+3. Fix rorx support in x86 assembler/disassembler for AVX Programming
+Reference (June, 2011).
+4. Fix an x86-64 ELFOSABI linker regression.
+5. Update ELFOSABI_GNU support. PR 12913.
+6. Fix a linker regression with prelink support. PR 12921.
+7. Add unwind info to x86 PLT section. PR 12570.
+8. Support x32 core files.
+9. Support native x32 linker.
+10. Fix linker --gc-sections on note sections. PR 12851.
+11. Avoid linker crash on bad input. PR 12887.
+12. Add section flags in linker script.
+13. Improve elf linker -z option support.
+14. Fix nm on compressed debug sections. PR 12983.
+15. Fix an ar bug. PR 12558.
+16. Fix an ia64 linker regression. PR 12978.
+17. Improve gold.
+18. Improve VMS support.
+19. Add TILE-Gx/TILEPro support.
+20. Improve alpha support.
+21. Improve avr support.
+22. Improve mips support.
+23. Improve arm support.
+24. Improve ppc support.
+25. Improve sh support.
+26. Improve TIC6X support.
+
+Changes from binutils 2.21.52.0.1:
+
+1. Update from binutils 2011 0610.
+2. Support AVX Programming Reference (June, 2011)
+3. Allow R_X86_64_64 relocations in SEC_DEBUGGING sections when building
+x32 shared libraries. Used to build kernel x32 vDSO.
+4. Fix linker --gc-sections on note sections. PR 12851.
+5. Update readelf to handle binaries containing corrupt version
+information. PR 12855.
+6. Improve gold.
+7. Improve VMS support.
+8. Improve mips support.
+
+Changes from binutils 2.21.51.0.9:
+
+1. Update from binutils 2011 0608.
+2. Fix an x86 linker regression. PRs 12833/12837/12859.
+3. Fix an x86-64 large model TLS linker bug. PR 12809.
+4. Fix LTO bugs. PRs 12758/12760.
+5. Add a new linker switch, -plugin-save-temps.
+6. Fix an linker bug for warning on common symbol in archive.
+7. Fix warning support when building shared library. PR 12761.
+8. Reduce linker memory usage when linking many small object files.
+PR 12682.
+9. Fix a thin archive bug. PR 12710.
+10. Fix a TLS linker bug. PR 12763.
+11. Improve gold.
+12. Improve DWARF dump support.
+13. Improve XCOFF support.
+14. Improve arm support.
+15. Improve cris support.
+16. Improve ia64 ILP32 support.
+17. Improve mips support.
+18. Improve ppc support.
+19. Improve rx support.
+20. Improve s390 support.
+21. Improve tic30 support.
+22. Improve tic6x support.
+23. Improve v850 support.
+
+Changes from binutils 2.21.51.0.8:
+
+1. Update from binutils 2011 0507.
+2. Improve LTO bfd linker. PRs 12365/12696/12672
+3. Fix a linker regression with constructor attribute in C++. PR 12730.
+4. Warn relocation in readonly section when creating a shared object.
+5. Remove empty output sections. PR 12718.
+6. Remove DT_TEXTREL with local IFUNC symbols. PR 12694.
+7. Properly set ELFOSABI_LINUX for STB_GNU_UNIQUE. PR 10549.
+8. Fix objcopy on unusual input. PR 12632.
+9. Fix an ar regression. PR 12720.
+10 Avoid linker crash on bad linker input.
+11. Fix a linker script regression. PR 12726.
+12. Support new GNU DWARF extensions.
+13. Initial support for SystemTap note sections.
+14. Add --dwarf-start and --dwarf-end to readelf and objdump.
+15. Disable 3dnow and 3dnowa for bdver1 in x86 assembler.
+16. Improve gold.
+17. Improve VMS support.
+18. Improve arm support.
+19. Improve mips support.
+20. Improve ppc support.
+21. Improve s390 support.
+22. Improve tic6x support.
+
+Changes from binutils 2.21.51.0.7:
+
+1. Update from binutils 2011 0408.
+2. Fix x32 TLS linker bug.
+3. Enable .quad directive in x32 assembler.
+4. Fix an assembler regression. PRs 12569/12589.
+5. Add --size-check= assembler option to issue a warning, instead of an
+error, on bad ELF .size directive.
+6. Fix an ia32 linker bug with TLS/PIE. PR 12654.
+7. Fix Intel L1OM linker library search path.
+8. Fix a linker buffer overflow on malformed inputs. PR 12613.
+9. Check corrupted symtab in nm/readelf. PR 12639.
+10. Avoid objcopy crash on archive with unknown objects. PR 12632.
+11. Fix "ar -t". PR 12590.
+12. Fix many memory leaks.
+13. Improve DWARF support.
+14. Improve gold.
+15. Improve VMS support.
+16. Improve Windows support.
+17. Improve alpha support.
+18. Improve arm support.
+19. Improve avr support.
+20. Improve ppc support.
+21. Improve sparc support.
+22. Improve tic6x support.
+
+Changes from binutils 2.21.51.0.6:
+
+1. Update from binutils 2011 0306.
+2. Supprt x32 TLS IE->LE transition.
+3. Change x32 library directory from /lib32 to /libx32.
+4. Improve LTO linker support. Fix PRs 12439/12314/12248/12430.
+5. Improve linker plugin support.
+6. Fix an ar bug. PR 12513.
+7. Properly generate nops for ia32. PR 6957.
+8. Improve readelf DT_GNU_HASH support. PR 12523.
+9. Improve readelf on invalid input. PR 12467.
+10. Update ELF assembler to issue an error on invalid .size directive.
+PR 12519,
+11. Properly handle PT_DYNAMIC segment with zero size sections. PR 12516.
+12. Add a new linker option, --verbose=2, to report plugin symbol
+status.
+13. Properly handle entry symbols in linker LTO support. PR 12507.
+14. Improve gold.
+15. Improve arm support.
+16. Improve bfin support.
+17. Improve mips support.
+18. Improve ppc support.
+
+Changes from binutils 2.21.51.0.5:
+
+1. Update from binutils 2011 0118.
+2. Fix x32 (ILP32) support. Renamed assembler option to --x32. It
+can create working static and dynamic x32 executables.
+3. Add BMI and TBM new instruction support.
+4. Fix x86 disassembler to properly display sign-extended byte.
+5. Improve IFUNC linker support. PRs 12366/12371.
+6. Fix readelf bug on archive. PR 12408.
+7. Fix a assembler when compressing empty debug sections. PR 12409.
+8. Fix a warning symbol linker bug. PR 12339.
+9. Fix a duplicated assert message linker bug. PR 12380.
+10. Fix plugin linker build. PR 12391.
+11. Fix a plugin linker crash. PR 12364.
+12. Improve plugin linker.
+13. Improve gold.
+14. Improve arm support.
+15. Improve mips support.
+16. Improve rx support.
+
+Changes from binutils 2.21.51.0.4:
+
+1. Update from binutils 2011 0104.
+2. Add ILP32 support:
+
+http://www.kernel.org/pub/linux/devel/binutils/ilp32/abi.pdf
+
+to Linux/x86-64.
+3. Prevent the Linux x86-64 kernel build failure and remove
+__ld_compatibility support. PR 12356.
+4. Improve gold.
+5. Improve Windows support.
+6. Improve hppa support.
+7. Improve mips support.
+
+Changes from binutils 2.21.51.0.3:
+
+1. Update from binutils 2010 1217.
+2. Fix the Linux relocatable kernel build. PR 12327.
+3. Improve mips support.
+
+Changes from binutils 2.21.51.0.2:
+
+1. Update from binutils 2010 1215.
+2. Add BFD linker support for placing input .ctors/.dtors sections in
+output .init_array/.fini_array section. Add SORT_BY_INIT_PRIORITY. The
+benefits are
+ a. Avoid output .ctors/.dtors section in executables and shared
+ libraries.
+ b. Allow mixing input .ctors/.dtors sections with input
+ .init_array/.fini_array sectiobs. GCC PR 46770.
+3. Add BFD linker support for "ld -r" on mixed IR/non-IR objects. Add
+the new ELF section type SHT_GNU_OBJECT_ONLY (0x6ffffff8). See
+
+http://sourceware.org/bugzilla/show_bug.cgi?id=12291
+
+4. Update BFD linker to accept -flto and -flto-partition= for GCC LTO
+option compatibility.
+5. Fix BFD linker to avoid touching uncompressed section content when
+relocating DWARF debug sections for errror reporting.
+6. Mark .gnu.lto_* sections with SHF_EXCLUDE.
+7. Add --target option to ar.
+8. Improve gold.
+9. Improve AIX support.
+10. Improve Windows support.
+11. Improve mips support.
+
+Changes from binutils 2.21.51.0.1:
+
+1. Update from binutils 2010 1206.
+2. Fix BFD and GOLD linker for compressed debug section support.
+3. Fix BFD linker plugin support. PR ld/12246, ld/12247, ld/12248,
+ld/12277, ld/12288 and ld/12289.
+4. Update BFD linker to group .text.exit, text.startup and .text.hot
+sections.
+5. Fix linker for W_EH_PE_datarel handling. PR ld/12253.
+6. Fix array access bug in readelf/elfedit. PR binutils/11742 and
+binutils/12235.
+7. Support dumping GDB .gdb_index section.
+8. Install plugin-api.h.
+9. Improve gold.
+10. Improve Solaris support.
+11. Improve VMS support.
+12. Improve Windows support.
+13. Improve arm support.
+14. Improve bfin support.
+15. Improve mips support.
+16. Improve s390 support.
+17. Improve z80 support.
+
+Changes from binutils 2.20.51.0.12:
+
+1. Update from binutils 2010 1110.
+2. Fix ld plugin support. PRs lto/46291 and lto/46319.
+3. Fix x86 assembler to properly fold _GLOBAL_OFFSET_TABLE_ in Intel
+syntax. PR 12186.
+4. Update assembler to ensure that group signature symbols have the name
+of the group.
+5. Avoid unnecessary relaxation in assembler. PR 12049.
+6. Update linker NOLOAD processing.
+7. Update linker not to include archive members when symbols therein have
+already been defined. PR 12001.
+8. Change objdump to display compressed section names without 'z'.
+9. Improve gold.
+10. Improve Solaris support.
+11. Improve VMS support.
+12. Improve Windows support.
+13. Improve arm support.
+14. Improve cr16 support.
+15. Improve mips support.
+16. Improve ppc support.
+17. Improve tic6x support.
+
+It is available on linux/release/2.22.51.0.1 branch at
+
+http://git.kernel.org/?p=linux/kernel/git/hjl/binutils.git;a=summary
+
+Thanks.
+
+
+H.J. Lu
+hjl.tools@gmail.com
+11/18/2011
