| Message ID | 19655.8672.504570.850812@pilspetsen.it.uu.se |
|---|---|
| State | New |
| Headers | show |
Ping for http://gcc.gnu.org/ml/gcc-patches/2010-10/msg02252.html If it helps: I hereby place this patch in the public domain. On Tue, 26 Oct 2010 20:45:52 +0200, Mikael Pettersson wrote: > Post 2.6.35 ARM/Linux kernels now randomize mmap() by default, > which breaks precompiled headers. See PR pch/45979. > > Fixed by supplying an explicit hint for a likely free area > in the address space for precompiled headers to use, similar > to what has already been done for many other Linux archs. > Based on observation from several largish processes on an > arm-linux-gnueabi machine, 0xa0000000 seems to be a good > choice: it's just under the stack and at the end of a large > area populated by shared libraries. > > Tested with gcc-4.6/4.5/4.4 on arm-linux-gnueabi running > 2.6.36-rcN kernels. Fixed all pch testsuite failures, with > no new regressions. > > Ok for trunk/4.5/4.4? (I don't havn svn write access.) > > gcc/ > > 2010-10-26 Mikael Pettersson <mikpe@it.uu.se> > > PR pch/45979 > * config/host-linux.c (TRY_EMPTY_VM_SPACE): Define for __ARM_EABI__. > > --- gcc-4.6-20101009/gcc/config/host-linux.c.~1~ 2009-02-20 16:20:38.000000000 +0100 > +++ gcc-4.6-20101009/gcc/config/host-linux.c 2010-10-13 15:24:28.000000000 +0200 > @@ -86,6 +86,8 @@ > # define TRY_EMPTY_VM_SPACE 0x60000000 > #elif defined(__mc68000__) > # define TRY_EMPTY_VM_SPACE 0x40000000 > +#elif defined(__ARM_EABI__) > +# define TRY_EMPTY_VM_SPACE 0xa0000000 > #else > # define TRY_EMPTY_VM_SPACE 0 > #endif
--- gcc-4.6-20101009/gcc/config/host-linux.c.~1~ 2009-02-20 16:20:38.000000000 +0100 +++ gcc-4.6-20101009/gcc/config/host-linux.c 2010-10-13 15:24:28.000000000 +0200 @@ -86,6 +86,8 @@ # define TRY_EMPTY_VM_SPACE 0x60000000 #elif defined(__mc68000__) # define TRY_EMPTY_VM_SPACE 0x40000000 +#elif defined(__ARM_EABI__) +# define TRY_EMPTY_VM_SPACE 0xa0000000 #else # define TRY_EMPTY_VM_SPACE 0 #endif