Hello everyone,<br>

&nbsp;&nbsp; I find that I can't single step OS kernels use qemu.When I use &quot;step&quot; or &quot;next&quot; command in gdb,<br>
the kernel always enter its interrupt route instead<br>
&nbsp;of executing the next instruction after the breakpoint.So I
modify QEMU's source code to disable interrupts in single step mode,and
now I can use<br>
&nbsp;&quot;step&quot; or &quot;next&quot; command in gdb to single step<br>
&nbsp;functions.<br>

<br>

&nbsp;&nbsp; Should I post the patch? It is a very small modification.<br clear="all">
<span><br></span><br>-- <br>Three passions, simple but overwhelmingly strong, have governed my life: <br>the longing for love, the search for knowledge, and unbearable pity for <br>the suffering of mankind.<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
---------Bertrand Russell<br>