The Linux binutils 2.21.51.0.1 is released
This is the beta release of binutils 2.21.51.0.1 for Linux, which is based on binutils 2010 1110 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 2.20.51.0.4 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 2.21.51.0.1 to [email protected]
and
http://www.sourceware.org/bugzilla/
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.
The file list:
1. binutils-2.21.51.0.1.tar.bz2. Source code.
2. binutils-2.21.51.0.1.i686.tar.bz2. IA-32 binary tar ball for RedHat EL 5.
3. binutils-2.21.51.0.1.ia64.tar.bz2. IA-64 binary tar ball for RedHat EL 5.
4. binutils-2.21.51.0.1.x86_64.tar.bz2. X64_64 binary tar ball for RedHat EL 5.
The primary sites for the beta Linux binutils are:
1. http://www.kernel.org/pub/linux/devel/binutils/
Thanks.
H.J. Lu
[email protected]
11/12/2010