[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v5 11/37] target-arm: Don't mention PMU in debug
|
From: |
Peter Maydell |
|
Subject: |
Re: [Qemu-devel] [PATCH v5 11/37] target-arm: Don't mention PMU in debug feature register |
|
Date: |
Tue, 1 Apr 2014 14:43:20 +0100 |
On 1 April 2014 14:19, Christopher Covington <address@hidden> wrote:
> Is the A32 port able to communicate the instruction count to target software
> via the PMU?
Sort of -- we implement the PMCR in A32 now (that code just
got added recently). However it doesn't actually return an
instruction count, because QEMU doesn't count instructions
executed usually. What you get is more like a very high
precision monotonic timer that stops when the CPU halts.
thanks
-- PMM