On Fri, 19 Sep 2003, Thiemo Seufer wrote: > > > A third answer is to add a -msign-extend-addresses switch in the assembler. > > > Together with -mabi=64 this would produce optimized ELF64 output. > > > > Hmm, what do you exactly mean -- is that what I am worrying about? > > The idea is to use the assembler's 32bit macro expansions for addresses. So it is... > This reduces the .text size of a n64 kernel and improves the performance, > without tricks like -Wa,32. What if the final link leads to segments being mapped outside the 32-bit address range? We won't know about it when assembling. If the idea were to be implemented, there should be a flag added to the header of object files that would forbid the linker to map addresses outside the 32-bit range. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
