Rayappan.External@xxxxxxxxxxxx wrote:
Hi,
This kind of inline assembly is given in the GCC Test suits
asm ("" : "=r" (tmp) : "0" (tmp));
As per my understanding the input and output remains in the same
register.But there is no instruction in the first double coats("").
The Question is
What will be the value of r(tmp) after this instruction.Whether it is
equivalent to
tmp will be unchanged from whatever was in it before. TGhe "0" is a constraint
saying tmp should start out in the same register as the result of that asm.
nathan
--
Nathan Sidwell :: http://www.codesourcery.com :: CodeSourcery LLC
nathan@xxxxxxxxxxxxxxxx :: http://www.planetfall.pwp.blueyonder.co.uk
