patches/glibc/2.5.1/140-i386-preferred-stack-boundary.patch
author |
"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> |
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Tue Oct 14 17:42:10 2008 +0000 (2008-10-14) |
changeset 929 |
7c958fb04f28 |
parent 744 |
4bf8448536d5
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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@402
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(C) 2007 Yann E. MORIN <yann.morin.1998@anciens.enib.fr>
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License: LGPL v2.1
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Shut off a stupid warning: preffered-stack-boundary must be between 4 ad 12,
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and 2 is not.
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diff -dur glibc-2.5.orig/sysdeps/i386/Makefile glibc-2.5/sysdeps/i386/Makefile
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--- glibc-2.5.orig/sysdeps/i386/Makefile 2005-03-06 01:18:16.000000000 +0100
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+++ glibc-2.5/sysdeps/i386/Makefile 2007-05-27 17:49:37.000000000 +0200
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@@ -36,7 +36,7 @@
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ifeq ($(subdir),csu)
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sysdep-CFLAGS += -mpreferred-stack-boundary=4
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else
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-sysdep-CFLAGS += -mpreferred-stack-boundary=2
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+sysdep-CFLAGS += -mpreferred-stack-boundary=4
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# Likewise, any function which calls user callbacks
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uses-callbacks += -mpreferred-stack-boundary=4
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# Likewise, any stack alignment tests
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