Re: error in unwind-dw.c while compiling ppc970 cross-gcc

[Khem Raj <kraj at mvista dot com>]

Khem Raj wrote:

> Mike Frysinger wrote:
>
> > On Thursday 07 April 2005 08:17 pm, Khem Raj wrote:
> >  
> >
> > > I have applied part of the patch
> > > http://www.gentoo.org/cgi-bin/viewcvs.cgi/sys-devel/gcc/files/3.4.3/gcc-3.4
> > > .3-cross-compile.patch?rev=1.7&view=markup wrongly which caused this issue.
> > > Once I corrected it. The build
> > > progressed further
> > >    
> >
> > erm, i dont think so ... the only thing that patch does is to prevent glibc 
> > header files from being included ...
> >
> > without the fixes in there for gcc/config/rs6000/linux64.h, the build fails 
> > much earlier in a typical mannor ... while trying to build libgcc2:
> >
> > /var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/build/gcc/xgcc 
> > -B/var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/build/gcc/ 
> > -B/usr/powerpc64-unknown-linux-gnu/bin/ 
> > -B/usr/powerpc64-unknown-linux-gnu/lib/ 
> > -isystem /usr/powerpc64-unknown-linux-gnu/include 
> > -isystem /usr/powerpc64-unknown-linux-gnu/sys-include -O2  -DIN_GCC 
> > -DCROSS_COMPILE   -W -Wall -Wwrite-strings -Wstrict-prototypes 
> > -Wmissing-prototypes -Wold-style-definition  -isystem ./include  
> > -mno-minimal-toc -fPIC -specs=bispecs -g  -DIN_LIBGCC2 
> > -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc -D_LIBC_PROVIDES_SSP_ -I. -I. 
> > -I/var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/gcc-3.4.3/gcc 
> > -I/var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/gcc-3.4.3/gcc/. 
> > -I/var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/gcc-3.4.3/gcc/../include   
> > -fPIC -mstrict-align -DL_muldi3 
> > -c /var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/gcc-3.4.3/gcc/libgcc2.c 
> > -o libgcc/./_muldi3.o
> > In file included from ./tm.h:12,
> > from /var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/gcc-3.4.3/gcc/libgcc2.c:43:
> > /var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/gcc-3.4.3/gcc/config/rs6000/linux64.h:583:20: 
> > signal.h: No such file or directory
> > /var/tmp/cross/powerpc64-unknown-linux-gnu/portage/gcc-3.4.3.20050110-r1/work/gcc-3.4.3/gcc/config/rs6000/linux64.h:585:26: 
> > sys/ucontext.h: No such file or directory
> > make[2]: *** [libgcc/./_muldi3.o] Error 1
> > -mike
> >
> > ------
> > Want more information?  See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/
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> >
> >  
My source tar does have Alan's patch I looked  at it yesterday. However 
my problem was that I did not apply your patch cleanly plus

I did tweak the patch a little bit. Here is diff of just 
gcc/config/rs6000/linux64.h

I also covered the defines MD_FALLBACK_FRAME_STATE_FOR and 
MD_FROB_UPDATE_CONTEXT in the  #ifndef inhibit_libc - #endif clause


Index: gcc-3.4.3/gcc/config/rs6000/linux64.h
===================================================================
--- gcc-3.4.3.orig/gcc/config/rs6000/linux64.h
+++ gcc-3.4.3/gcc/config/rs6000/linux64.h
@@ -559,13 +559,12 @@ while (0)
/* Do code reading to identify a signal frame, and set the frame
   state data appropriately.  See unwind-dw2.c for the structs.  */

+#ifndef inhibit_libc
#ifdef IN_LIBGCC2
#include <signal.h>
#ifdef __powerpc64__
#include <sys/ucontext.h>

-enum { SIGNAL_FRAMESIZE = 128 };
-
#else

/* During the 2.5 kernel series the kernel ucontext was changed, but
@@ -579,7 +578,6 @@ struct kernel_old_ucontext {
  struct sigcontext_struct uc_mcontext;
  sigset_t          uc_sigmask;
};
-enum { SIGNAL_FRAMESIZE = 64 };
#endif

#endif
@@ -733,3 +731,9 @@ enum { SIGNAL_FRAMESIZE = 64 };
  } while (0)

#endif
+#endif /* inhibit_libc */
+#ifdef __powerpc64__
+enum { SIGNAL_FRAMESIZE = 128 };
+#else
+enum { SIGNAL_FRAMESIZE = 64 };
+#endif

--
Khem Raj
MontaVista Software Inc.

http://www.mvista.com
Platform To Innovate

--
Khem Raj
MontaVista Software Inc.
1237 E. Arques Ave.Sunnyvale CA 94085
web http://www.mvista.com


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