powerpc/ppc64: Allow allmodconfig to build (finally !)

[Alan Modra]

On Wed, May 14, 2014 at 01:34:34PM +1000, Stephen Rothwell wrote:
> OK, this appears to be an assembler bug.

Agreed.  Upgrade binutils!

> $ cat test.s
> 	.text
> x:
> 	.pushsection	b, "a"
> 	beq y
> 	.popsection
> 	.=0x80000
> y:
> $ /opt/cross/gcc-4.6.3-nolibc/powerpc64-linux/bin/powerpc64-linux-as --version
> GNU assembler (GNU Binutils) 2.22
> This assembler was configured for a target of `powerpc64-linux'.
> $ /opt/cross/gcc-4.6.3-nolibc/powerpc64-linux/bin/powerpc64-linux-as -o test.o test.s 
> test.s: Assembler messages:
> test.s:4: Error: operand out of range (0x0000000000080000 is not between 0xffffffffffff8000 and 0x0000000000007ffc)
> $ /opt/cross/gcc-4.8.1-nolibc/powerpc64-linux/bin/powerpc64-linux-as --version
> GNU assembler (GNU Binutils) 2.23.52.20130512
> This assembler was configured for a target of `powerpc64-linux'.
> $ /opt/cross/gcc-4.8.1-nolibc/powerpc64-linux/bin/powerpc64-linux-as -o test.o test.s 
> (no error)
> 
> Alan, can you shed light on when it was fixed?

2012-11-05
https://sourceware.org/ml/binutils/2012-11/msg00043.html
git show 3b8b57a9495016b2b02fbc2612dd1607d4b6f9ba

The part that actually fixes this problem is "Leave insn field zero...".

-- 
Alan Modra
Australia Development Lab, IBM