Porting 64-bit target on 32-bit host

2011-10-10 Thread Huang Ping
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 s

Re: Porting 64-bit target on 32-bit host

2011-10-10 Thread Huang Ping
2011/10/10 Bingfeng Mei : > 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 Then how did you solve your problem in this thread? do many hackings on 32-bit ho