On Wed, Feb 27, 2008 at 01:51:10PM +0100, Igor Bukanov wrote: > Hi, > > is it possible with GCC 4.1 to align one single function on a CPU page > boundary for ELF targets? This is very desired since the function in > question is an interpreter loop . It has 50K of code and is executed > very often. Aligning it on the page boundary should reduce TLB misses. > > It seems the forthcoming GCC 4.3 allows that as it supports the align > attribute for functions, but it would be nice to do that with GCC > 4.1. One way is to use the section attribute to tell gcc to put the function in a specific section and then in the linker script page align said section. This is used extensively in the linux kernel. Sam
