I believe that 64-bit target on 32-bit host is not supported by GCC. You need a lot of hackings to do so.
Check this thread. http://gcc.gnu.org/ml/gcc-patches/2009-03/msg00908.html Bingfeng Mei > -----Original Message----- > From: gcc-ow...@gcc.gnu.org [mailto:gcc-ow...@gcc.gnu.org] On Behalf Of > Huang Ping > Sent: 10 October 2011 11:29 > To: gcc@gcc.gnu.org > Subject: Porting 64-bit target on 32-bit host > > Hi, all > > I'm porting a 64-bit target gcc on a 32-bit i386 host. I have set > need_64bit_hwint to yes in config.gcc. But it fails when building > libgcc. > Then I did a simple test. test case like this: > int test () > { > return 0; > } > > I use cc1 compile it with -fdump-tree-all. The 003t.orioginal dump file > shows: > { > return 1900544; > } > > I guess the compiler may take constant 0 as TImode, and read the > adjacent word in memory. But I'm not sure. Could someone give some > advice? > Thanks. > > Ping
