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Re: [Qemu-devel] [Consult] About SPRs information
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [Consult] About SPRs information |
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Date: |
Mon, 27 Apr 2015 15:04:49 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 04/27/2015 02:12 PM, Chen Gang wrote:
> Now, I am blocked at SPRs: "mtspr SPR_CMPEXCH_VALUE %r12", and trying to
> solve it.
SPR_CMPEXCH_VALUE should be present in your cpu structure, should be a TCGv
like all of your other registers, and this expands to a simple move.
You will probably need to dispatch on the SPR number. Some of these will be
normal moves to special register slots. Some of these may require a function
call in order to handle the side effects.
r~