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# --- SDE-COPYRIGHT-NOTE-BEGIN ---
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# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
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#
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# Filename: package/.../uclibc/pkg_patch/gcc-900-crt-align-1.patch
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# Copyright (C) 2006 The OpenSDE Project
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# Copyright (C) 2006 The T2 SDE Project
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#
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# More information can be found in the files COPYING and README.
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#
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# This patch file is dual-licensed. It is available under the license the
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# patched project is licensed under, as long as it is an OpenSource license
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# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
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# of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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# --- SDE-COPYRIGHT-NOTE-END ---
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2006-03-18 H.J. Lu <hongjiu.lu@intel.com>
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* config/i386/crtfastmath.c (set_fast_math): Align fxsave to
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16byte by hand.
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Reference:
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http://gcc.gnu.org/ml/gcc-patches/2006-03/msg01179.html
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--- ./gcc/config/i386/crtfastmath.c.align 2005-11-04 14:13:48.000000000 -0800
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+++ ./gcc/config/i386/crtfastmath.c 2006-03-18 08:34:13.000000000 -0800
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@@ -75,7 +75,7 @@ set_fast_math (void)
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if (edx & FXSAVE)
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{
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/* Check if DAZ is available. */
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- struct
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+ struct fxsave
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{
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unsigned short int cwd;
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unsigned short int swd;
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@@ -90,13 +90,17 @@ set_fast_math (void)
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long int st_space[32];
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long int xmm_space[32];
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long int padding[56];
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- } __attribute__ ((aligned (16))) fxsave;
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+ } *fxsave;
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- __builtin_memset (&fxsave, 0, sizeof (fxsave));
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+ fxsave = (struct fxsave *)
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+ (((unsigned long) __builtin_alloca (sizeof (*fxsave) + 15))
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+ & ~15L);
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- asm volatile ("fxsave %0" : "=m" (fxsave) : "m" (fxsave));
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+ __builtin_memset (fxsave, 0, sizeof (*fxsave));
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- if (fxsave.mxcsr_mask & MXCSR_DAZ)
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+ asm volatile ("fxsave %0" : "=m" (*fxsave) : "m" (*fxsave));
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+
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+ if (fxsave->mxcsr_mask & MXCSR_DAZ)
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mxcsr |= MXCSR_DAZ;
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}
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