patches/gcc/4.3.0/190-superh-default-multilib.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Oct 14 17:42:10 2008 +0000 (2008-10-14)
changeset 929 7c958fb04f28
parent 746 b150d6f590fc
permissions -rw-r--r--
Sample config for e500v2 toolchain

On Tuesday 14 October 2008 17:05:31 Nate Case wrote:
> This is a sample config file for Freescale e500v2 processors (e.g.,
> MPC8548, MPC8572). It uses eglibc (for e500/SPE patches) and a recent
> gcc (4.3.1, for e500v2 DPFP support) and will generate appropriate
> dual-precision floating point instructions by default.
>
> Note: If building a Linux kernel with this toolchain, you will want to
> make sure -mno-spe AND -mspe=no are passed to gcc to prevent SPE
> ABI/instructions from getting into the kernel (which is currently
> unsupported). At this time, the kernel build system only passes
> -mno-spe by default (this should be fixed soon hopefully).
>
> A binutils snapshot is used to fix a bug present in 2.18 preventing
> U-Boot from being compiled (CodeSourcery issue #2297: internal.h
> (ELF_IS_SECTION_IN_SEGMENT): Adjust to cope with segments at the end of
> memory).

Obsoletes the powerpc-unknown-linux-gnuspe sample, so remove it.

/trunk/samples/powerpc-e500v2-linux-gnuspe/crosstool.config | 307 307 0 0 +++++++++++++++++++
1 file changed, 307 insertions(+)
yann@552
     1
Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.0/gentoo/53_all_gcc4-superh-default-multilib.patch
yann@552
     2
The gcc-3.x toolchains would contain all the targets by default.  With gcc-4,
yann@552
     3
you have to actually list out the multilibs you want or you will end up with
yann@552
     4
just one when using targets like 'sh4-linux-gnu'.
yann@552
     5
yann@552
     6
The resulting toolchain can't even build a kernel as the kernel needs to build
yann@552
     7
with the nofpu flag to be sure that no fpu ops are generated.
yann@552
     8
yann@552
     9
Here we restore the gcc-3.x behavior; the additional overhead of building all
yann@552
    10
of these multilibs by default is negligible.
yann@552
    11
yann@552
    12
http://bugs.gentoo.org/140205
yann@552
    13
yann@552
    14
diff -durN gcc-4.3.0.orig/gcc/config.gcc gcc-4.3.0/gcc/config.gcc
yann@552
    15
--- gcc-4.3.0.orig/gcc/config.gcc	2008-01-29 17:28:10.000000000 +0100
yann@552
    16
+++ gcc-4.3.0/gcc/config.gcc	2008-06-10 14:44:47.000000000 +0200
yann@552
    17
@@ -2271,7 +2271,7 @@
yann@552
    18
 	if test x${sh_multilibs} = x ; then
yann@552
    19
 		case ${target} in
yann@552
    20
 		sh64-superh-linux* | \
yann@552
    21
-		sh[1234]*)	sh_multilibs=${sh_cpu_target} ;;
yann@552
    22
+		sh[1234]*)	sh_multilibs=`cd ${srcdir}/config/sh ; echo t-mlib-sh[1-4]* | sed 's:t-mlib-sh:,m:g;s: ::g'` ;;
yann@552
    23
 		sh64* | sh5*)	sh_multilibs=m5-32media,m5-32media-nofpu,m5-compact,m5-compact-nofpu,m5-64media,m5-64media-nofpu ;;
yann@552
    24
 		sh-superh-*)	sh_multilibs=m4,m4-single,m4-single-only,m4-nofpu ;;
yann@552
    25
 		sh*-*-linux*)	sh_multilibs=m1,m3e,m4 ;;