Re: [Qemu-devel] Qemu memory operations

[Prathmesh Kallurkar <prathmesh.kallurkar@gmail.com>]

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Sorry friends for the misleading instructions in the previous mail.

cmp ecx, [r12+0x4]
mov r10b, [r13+0x0]
mov byte [rax+0xf0000], 0x0
mov byte [rax+rdx], 0x0

It seems all the above instructions are getting covered with the
tcg_gen_ld/st helpers.

But now I have stumbled upon another problem :
I initially thought that all the interactions with the guest memory happen
through the helper instructions in the translate.c file.
However, I found that the helper functions for some instructions like
*cmpxcgh8b
*and* cmpxchg16b* are actually accessing guest memory.

So, does it mean there are more than one entry points for reading guest
memory.
Can some one please explain how are the *ldq and stq* instructions
translated to access the guest memory ??

Thanks in advance.


Regards,
Prathmesh Kallurkar

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