OpenRISC 1000

<p> This is a debatable bug/feature. It's a trade-off between conciseness and clarity. </p> <p> The current binutils assembler allows signed immediate operands to be omitted, substituting zero. Thus all the following are valid. </p> <pre> l.ld r0,(r1) l.maci r3 l.addi r1,r2 l.sfgtui r1 </pre> <p> Note that this only applies to signed operands. Thus the following is not valid. </p> <pre> l.andi r0,r1 </pre> <p> My recommendation is that for clarity, signed immediate operands should always be present. Since almost all assembler is machine generated, this should not affect users significantly. </p> <p> Jeremy </p> <p> -- <br /> Tel: +44 (1590) 610184<br /> Cell: +44 (7970) 676050<br /> SkypeID: jeremybennett<br /> Email: <a href="mailto:jeremy.bennett@embecosm.com">jeremy.bennett@embecosm.com</a><br /> Web: <a href="http://www.embecosm.com">www.embecosm.com</a> </p>

<p> Transferred to OpenRISC bugzilla (<a href="http://bugzilla.opencores.org/show_bug.cgi?id=21">Bug 21</a>). </p> <p> Marking closed in this bugtracker. </p>