On x86 platform, is there any means to link 32 bit ELF output into 64 bit ? In Linux kernel, arch/x86/boot/compressed/head_64.S, starts from32-bit code and enables CPU to jump into 64-bit. So, that file is assembled into 64 bit ELF object with mixed 32/64 bit code. Now, I want to call a routine from somewhere in the 32bit code part of head_64.S. And I write the routine by C language, say test.c and compile it with "gcc -m32 -c -o test.o". How can I link mytest.o to head_64.o ? Or I have to use assembly language to rewritemy routine and embed it directly into head_64.S source code ? please reply me directly thanks,-minskey
