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Inside the java virtualMachine,深入研究java虚拟机

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<H3><P>Instructions that deal with arrays</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">newarray</FONT></TD><TD VALIGN="TOP">Allocate new array of primitive type components</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">anewarray</FONT></TD><TD VALIGN="TOP">Allocate new array of reference type components</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">arraylength</FONT></TD><TD VALIGN="TOP">Get length of an array</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">multianewarray</FONT></TD><TD VALIGN="TOP">Allocate a new multi-dimensional array</TD></TR>
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<H3><EM><P>Control Flow (Chapter 16)</P>
</I><P>Conditional branch instructions</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ifeq</FONT></TD><TD VALIGN="TOP">Branch if equal to 0</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ifne</FONT></TD><TD VALIGN="TOP">Branch if not equal to 0</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">iflt</FONT></TD><TD VALIGN="TOP">Branch if less than 0</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ifge</FONT></TD><TD VALIGN="TOP">Branch if greater than or equal to 0</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ifgt</FONT></TD><TD VALIGN="TOP">Branch if greater than 0</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ifle</FONT></TD><TD VALIGN="TOP">Branch if less than or equal to 0</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">if_icmpeq</FONT></TD><TD VALIGN="TOP">Branch if <FONT FACE="Courier New">int</FONT>s equal</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">if_icmpne</FONT></TD><TD VALIGN="TOP">Branch if <FONT FACE="Courier New">int</FONT>s not equal</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">if_icmplt</FONT></TD><TD VALIGN="TOP">Branch if <FONT FACE="Courier New">int</FONT> less than other <FONT FACE="Courier New">int</FONT></TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">if_icmpge</FONT></TD><TD VALIGN="TOP">Branch if <FONT FACE="Courier New">int</FONT> greater than or equal to other <FONT FACE="Courier New">int</FONT></TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">if_icmpgt</FONT></TD><TD VALIGN="TOP">Branch if <FONT FACE="Courier New">int</FONT> greater than other <FONT FACE="Courier New">int</FONT></TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">if_icmple</FONT></TD><TD VALIGN="TOP">Branch if <FONT FACE="Courier New">int</FONT> less than or equal to other <FONT FACE="Courier New">int</FONT></TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ifnull</FONT></TD><TD VALIGN="TOP">Branch if <FONT FACE="Courier New">null</FONT></TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ifnonnull</FONT></TD><TD VALIGN="TOP">Branch if not <FONT FACE="Courier New">null</FONT></TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">if_acmpeq</FONT></TD><TD VALIGN="TOP">Branch if object references are equal</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">if_acmpne</FONT></TD><TD VALIGN="TOP">Branch if object references not equal</TD></TR>
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<H3><P>Comparison instructions</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">lcmp</FONT></TD><TD VALIGN="TOP">Compare <FONT FACE="Courier New">long</FONT>s</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">fcmpl</FONT></TD><TD VALIGN="TOP">Compare <FONT FACE="Courier New">float</FONT>s (-1 on NaN)</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">fcmpg</FONT></TD><TD VALIGN="TOP">Compare <FONT FACE="Courier New">float</FONT>s (1 on NaN)</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">dcmpl</FONT></TD><TD VALIGN="TOP">Compare <FONT FACE="Courier New">double</FONT>s (-1 on NaN)</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">dcmpg</FONT></TD><TD VALIGN="TOP">Compare <FONT FACE="Courier New">double</FONT>s (1 on NaN)</TD></TR>
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<H3><P>Unconditional branch instructions</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">goto</FONT></TD><TD VALIGN="TOP">Branch always</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">goto_w</FONT></TD><TD VALIGN="TOP">Branch always (wide index)</TD></TR>
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<H3><P>Table jumping instructions</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">tableswitch</FONT></TD><TD VALIGN="TOP">Access jump table by index and jump</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">lookupswitch</FONT></TD><TD VALIGN="TOP">Access jump table by key match and jump</TD></TR>
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<H3><EM><P>Exceptions (Chapter 17)</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">athrow</FONT></TD><TD VALIGN="TOP">Throw exception or error</TD></TR>
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<H3><EM><P>Finally Clauses (Chapter 18)</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">jsr</FONT></TD><TD VALIGN="TOP">Jump to subroutine</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">jsr_w</FONT></TD><TD VALIGN="TOP">Jump to subroutine (wide index)</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ret</FONT></TD><TD VALIGN="TOP">Return from subroutine</TD></TR>
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<H3><EM><P>Method Invocation and Return (Chapter 19)</P>
</I><P>Method invocation instructions</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">invokevirtual</FONT></TD><TD VALIGN="TOP">Invoke instance method, dispatch based on run-time type</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">invokespecial</FONT></TD><TD VALIGN="TOP">Invoke instance method, dispatching based on compile-time type</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">invokestatic</FONT></TD><TD VALIGN="TOP">Invoke a class (static) method</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">invokeinterface</FONT></TD><TD VALIGN="TOP">Invoke interface method</TD></TR>
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<H3><P>Method return instructions</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">ireturn</FONT></TD><TD VALIGN="TOP">Return <FONT FACE="Courier New">int</FONT> from method</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">lreturn</FONT></TD><TD VALIGN="TOP">Return <FONT FACE="Courier New">long</FONT> from method</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">freturn</FONT></TD><TD VALIGN="TOP">Return <FONT FACE="Courier New">float</FONT> from method</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">dreturn</FONT></TD><TD VALIGN="TOP">Return <FONT FACE="Courier New">double</FONT> from method</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">areturn</FONT></TD><TD VALIGN="TOP">Return <FONT FACE="Courier New">reference</FONT> from method</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">return</FONT></TD><TD VALIGN="TOP">Return (<FONT FACE="Courier New">void</FONT>) from method</TD></TR>
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<H3><EM><P>Thread Synchronization (Chapter 20)</P>
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<TR><TD VALIGN="TOP"><FONT FACE="Courier New">monitorenter</FONT></TD><TD VALIGN="TOP">Enter and acquire object monitor</TD></TR>
<TR><TD VALIGN="TOP"><FONT FACE="Courier New">monitorexit</FONT></TD><TD VALIGN="TOP">Release and exit object monitor</TD></TR>
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