<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <title>return-object</title> <link rel=stylesheet href="opcode.css"> </head> <body> <h1>return-object</h1> <h2>Purpose</h2> <p> Return from an object-returning method. </p> <h2>Details</h2> <table class="instruc"> <thead> <tr> <th>Op & Format</th> <th>Mnemonic / Syntax</th> <th>Arguments</th> </tr> </thead> <tbody> <tr> <td>11 11x</td> <td>return-object vAA</td> <td><code>A:</code> return value register (8 bits)</td> </tr> </tbody> </table> <h2>Constraints</h2> <ul> <li> The return type of the current method must be a reference. </li> <li> A must be a valid register index in the current stack frame. </li> <li> Register vA must be known to be reference-bearing. </li> </ul> <h2>Behavior</h2> <ul> <li> If the method is synchronized, the object's monitor is released in a way similar to the monitor-exit instruction. </li> <li> The stack frame of the current method invocation is removed from the stack. This includes all its registers becoming invalid. </li> <li> If the stack is now empty, the current thread terminates. </li> <li> Otherwise, the following happens: </li> <ul> <li> The stack frame that caused this method invocation becomes valid. This includes all its registers and their old values. </li> <li> Execution continues at the bytecode instruction immediately following the invoke instruction that caused this method invocation. </li> <li> The return value can be consumed by (exactly) the first instruction following the invoke-kind or invoke-kind/range instruction that caused this method invocation, and this instructions needs to be a move-result-object instruction. </li> </ul> </li> </ul> <h2>Exceptions</h2> <p> None. </p> </body> </html>