On 31/05/17 00:34, Nisal Menuka wrote: > Hi, > I would like to reserve some registers in ARM64 processor and prohibit > the compiler from using them in any scenario. > > For example: ARM64 Thirty-one 64-bit general-purpose registers X0-X30. > I want to reserve register X30, and make sure when I compile any code > using gcc, it won't use register X30 in any situation. > You can't reserve x30, it's the link register and clobbered by call instructions. R. > How can this be done? Any help would be greatly appreciated. > > Thanks, > Nisal >
