Hello group,<br><br>I have two questions, both regarding the virtual-physical translation of addresses (all in the virtual machine context).<br><br>1&gt; <br>Can somebody tell me if the program counter value available in the following snippet from target-i386/translate.c
<br>is virtual or physical? I learnt it may be virtual, in which case is there a way to extract the physical address corresponding to the<br>virtual address, or if it is physical, then is there a way to translate to its virtual address (within the virtual machine context)?
<br><br>************************************************<br>/* convert one instruction. s-&gt;is_jmp is set if the translation must<br>&nbsp;&nbsp; be stopped. Return the next pc value */<br>static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
<br>{<br>&nbsp;&nbsp;&nbsp; int b, prefixes, aflag, dflag;<br>&nbsp;&nbsp;&nbsp; int shift, ot;<br>&nbsp;&nbsp;&nbsp; int modrm, reg, rm, mod, reg_addr, op, opreg, offset_addr, val;<br>&nbsp;&nbsp;&nbsp; target_ulong next_eip, tval;<br>&nbsp;&nbsp;&nbsp; int rex_w, rex_r;<br><br>&nbsp;&nbsp;&nbsp; s-&gt;pc = pc_start;&nbsp;&nbsp; // This s-&gt;pc is what I am using to extract all executed PC values
<br>************************************************<br><br><br>2&gt; <br>Second question I have is - Within the functions from target-i386/ops_mem.h<br>for example, <br><br>void OPPROTO glue(glue(op_ldub, MEMSUFFIX), _T0_A0)(void)
<br>
{<br>
&nbsp;&nbsp;&nbsp; T0 = glue(ldub, MEMSUFFIX)(A0);<br>
}<br>
<br>Is A0 the physical address? or is it virtual? <br>And how to I translate from one to another in either case?<br><br><br>Thanks in advance.<br>-Shashi.<br>