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📁 Jvm 规范说明。The Java Virtual Machine was designed to support the Java programming language. Some concep

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<html><head><title>VM Spec  </title></head><body BGCOLOR=#eeeeff text=#000000 LINK=#0000ff VLINK=#000077 ALINK=#ff0000> <a href="VMSpecTOC.doc.html">Contents</a> | <a href="Instructions2.doc116.html">Prev</a> | <a href="Instructions2.doc118.html">Next</a> | <a href="Mnemonics.doc.html">Index</a><hr><br> <a name="ireturn"></a><h2>ireturn</h2><a name="ireturn.Operation"></a><b>Operation</b><br><a name="69024"></a>Return <code>int</code> from method<p><Table Border="3"><tr><td><a name="69023"></a> <i>ireturn</i><td><a name="87568"></a> </Table><Table><tr><td></Table><p><a name="ireturn.Forms"></a><b>Forms</b><br><a name="69025"></a><i>ireturn</i> = 172 (0xac)<p><a name="ireturn.Stack"></a><b>Stack</b><br><a name="69026"></a>..., <i>value</i><em> </em><img src="chars/arrwdbrt.gif">  [empty]<p><a name="ireturn.Description"></a><b>Description</b><br><a name="69027"></a>The returning method must have return type <code>byte</code>, <code>short</code>, <code>char</code>, or <code>int</code>. The <i>value</i> must be of type <code>int</code>. The <i>value</i> is popped from the operand stack of the current frame <a href="Overview.doc.html#17257">(&#167;3.6)</a> and pushed onto the operand stack of the frame of the invoker. Any other values on the operand stack of the current method are discarded. If the returning method is a <code>synchronized</code> method, the monitor acquired or re-entered on invocation of the method is released or exited (respectively) as if by execution of a <i>monitorexit</i> instruction. <p><a name="69031"></a>The interpreter then returns control to the invoker of the method, reinstating the frame of the invoker.<p><hr><!-- This inserts footnotes--><p><a href="VMSpecTOC.doc.html">Contents</a> | <a href="Instructions2.doc116.html">Prev</a> | <a href="Instructions2.doc118.html">Next</a> | <a href="Mnemonics.doc.html">Index</a><p><font size=-1>Java Virtual Machine Specification (HTML generated by dkramer on February 25, 1997)<br><i><a href="Copyright.doc.html">Copyright &#169 1996 Sun Microsystems, Inc.</a>All rights reserved</i><br>Please send any comments or corrections to <a href="mailto:doug.kramer@sun.com">doug.kramer@sun.com</a></font></body></html>

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