crosstool-ng: patches/glibc/2.7/170-use_short_for

binutils: split binutils to backend/frontend, a-la cc_core

Move the actual binutils code to a backend function that builds the
required combo of build/host/target as requested by a frontend.

This split is currently a no-op, but is required for the upcoming
canadian-cross rework, where we'll be needing to build two binutils,
one for build/build/target, and one for build/host/target.

This applies to the three binutils:
- GNU binutils
- elf2flt
- sstrip

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

     1 Original patch from H.J. Lu, as reported there:

     2 http://www.nabble.com/PATCH:-Use-short-for-fnstsw-td14775171.html

     4 fnstsw stores 16bit into %ax. The upper 16bit of %eax is unchanged.

     5 The new assembler (binutils-2.18.50.0.4 and up) will disallow "fnstsw %eax".

     7 diff -dur glibc-2.7.orig/sysdeps/i386/fpu/ftestexcept.c glibc-2.7/sysdeps/i386/fpu/ftestexcept.c

     8 --- glibc-2.7.orig/sysdeps/i386/fpu/ftestexcept.c	2004-03-05 11:14:48.000000000 +0100

     9 +++ glibc-2.7/sysdeps/i386/fpu/ftestexcept.c	2008-06-24 10:54:43.000000000 +0200

    10 @@ -26,7 +26,7 @@

    11  int

    12  fetestexcept (int excepts)

    13  {

    14 -  int temp;

    15 +  short temp;

    16    int xtemp = 0;

    18    /* Get current exceptions.  */

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Sun Jul 17 18:29:35 2011 +0200 (2011-07-17)
changeset 2926	d304c8a7bfa8
parent 612	fc9588d57c0f
permissions	-rw-r--r--