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<title>10.4.2 Passing function pointers  </title>

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  <a name="1204826"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">10.4.2 	 Passing function pointers</font>
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<p>
  <a name="1204827"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">Problems can occur when passing function pointers between RCUs and the application. This is because while the pointer is valid in all cases, it needs to be called with the correct static link. In particular this is a problem with some OS20 functions which take a function pointer as an argument. To overcome this a number of additional functions have been provided, which take a static link as well as function pointer:</font>
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  <a name="1204831"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif"><font size=2 face=Courier><strong>interrupt_install_sl</strong></font>, <font size=2 face=Courier><strong>task_create_sl</strong></font>, <font size=2 face=Courier><strong>task_init_sl</strong></font>,		 <font size=2 face=Courier><strong>task_onexit_set_sl</strong></font></font>
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<p>
  <a name="1204841"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">These functions are described in <a href="rcu23.htm#1204865"><font  color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Section

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