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<title>10.2.2 Entry point </title>
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<a name="1204634"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">10.2.2 Entry point</font>
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<a name="1204635"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">An RCU provides a single entry point that should be called with the appropriate static link value. The parameters and return value that the entry point provides are not restricted in any way.</font>
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<a name="1204636"> </a><font size=2 face=Courier><strong>int (*ep)(int staticlink, int <font size=2 face=Courier><strong><em>arg1</em></strong></font>, int <font size=2 face=Courier><strong><em>arg2</em></strong></font>);<br>#pragma ST_nolink(ep)<br>ep = (int(*)(int,int,int))entrypoint_pointer;<br>res = ep(staticlink, 2, 3);<br></strong></font>
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<a name="1204640"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">In this example the variable <font size=2 face=Courier><strong>entrypoint_pointer</strong></font> is a pointer to the entry point of the RCU. The variable <font size=2 face=Courier><strong>staticlink</strong></font> is the static link of the RCU. The entry point is invoked with the static link as the first parameter and two additional integer parameters and returns an integer result.</font>
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<a name="1204641"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The entry point, pointed to by <font size=2 face=Courier><strong>entrypoint_pointer</strong></font> would need to be defined in the RCU program as follows:</font>
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<a name="1204642"> </a><font size=2 face=Courier><strong>int rcuentrypoint(int <font size=2 face=Courier><strong><em>a</em></strong></font>, int <font size=2 face=Courier><strong><em>b</em></strong></font>) {<br></strong></font>
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<a name="1204643"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><em>Note: The static link parameter is implicitly allocated by the compiler so the user does not need to define this.</em></font>
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