1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 2 3<html> 4 5<head> 6<title>goto</title> 7<link rel=stylesheet href="opcode.css"> 8</head> 9 10<body> 11 12<h1>goto</h1> 13 14<h2>Purpose</h2> 15 16<p> 17Unconditionally jump to the indicated instruction. 18</p> 19<p> 20Note: The branch offset may not be 0. (A spin loop may be legally constructed 21either with goto/32 or by including a nop as a target before the branch.) 22</p> 23 24<h2>Details</h2> 25 26<table class="instruc"> 27<thead> 28<tr> 29 <th>Op & Format</th> 30 <th>Mnemonic / Syntax</th> 31 <th>Arguments</th> 32</tr> 33</thead> 34<tbody> 35<tr> 36 <td>28 10t</td> 37 <td>goto +AA</td> 38 <td><code>A:</code> signed branch offset (8 bits)</td> 39</tr> 40</tbody> 41</table> 42 43<h2>Constraints</h2> 44 45<ul> 46 <li> 47 A must point to a valid bytecode instruction inside the current method. 48 </li> 49 <li> 50 A must not be 0. 51 </li> 52</ul> 53 54<h2>Behavior</h2> 55 56<ul> 57 <li> 58 The (otherwise invisible) program counter PC is set to the address of the 59 instruction plus the given offset, that is, PC' = PC(goto) + A. 60 </li> 61 <li> 62 Executions resumes at PC'. 63 </li> 64</ul> 65 66<h2>Exceptions</h2> 67 68<p> 69None. 70</p> 71 72</body> 73</html> 74