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Re: [Qemu-devel] [RFC PATCH 02/34] tcg+qom: QOMify core CPU defintions
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [RFC PATCH 02/34] tcg+qom: QOMify core CPU defintions |
Date: |
Mon, 11 May 2015 12:39:49 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 |
On 11/05/2015 12:36, Andreas Färber wrote:
> > Right. My point was that these functions are not polymorphic. Each
> > call to these should know exactly which function to call.
> >
> > cputlb.c, cpu-exec.c and parts of translate-all.c should be the moral
> > equivalent of C++ templates. I wouldn't mind switching to C++, but if
> > we want to make them polymorphic we should do it at compile time through
> > multiple compilation and/or inclusion from target-*.
>
> I think we got more concrete than that, possibly on IRC only? I believe
> #include'ing cputlb.c from some target-* file was one of your proposed
> solutions?
Yes (but Peter is making more functions virtual, so he'd have to do the
same also for cpu-exec.c and parts of translate-all.c).
> And splitting some of the inline functions that I was getting
> rid of into some new (or existing?) file?
If I remember correctly, another solution could be to keep the virtual
functions, but ensure that all the hot paths were "devirtualizing" them
and calling the CPU-specific function directly.
Paolo
- [Qemu-devel] [RFC PATCH 06/34] mb: rename EXCP macros, (continued)
- [Qemu-devel] [RFC PATCH 06/34] mb: rename EXCP macros, Peter Crosthwaite, 2015/05/11
- [Qemu-devel] [RFC PATCH 10/34] HACK: microblaze: rename clz helper, Peter Crosthwaite, 2015/05/11
- [Qemu-devel] [RFC PATCH 05/34] mb: cpu: Delete MMAP_SHIFT definition, Peter Crosthwaite, 2015/05/11
- [Qemu-devel] [RFC PATCH 07/34] mb: Remove ELF_MACHINE from cpu.h, Peter Crosthwaite, 2015/05/11
- [Qemu-devel] [RFC PATCH 03/34] target-multi: Add, Peter Crosthwaite, 2015/05/11
- [Qemu-devel] [RFC PATCH 01/34] cpu-all: Prototype cpu_exec and cpu_signal_handler, Peter Crosthwaite, 2015/05/11
- [Qemu-devel] [RFC PATCH 02/34] tcg+qom: QOMify core CPU defintions, Peter Crosthwaite, 2015/05/11
- Re: [Qemu-devel] [RFC PATCH 02/34] tcg+qom: QOMify core CPU defintions, Richard Henderson, 2015/05/11
- Re: [Qemu-devel] [RFC PATCH 02/34] tcg+qom: QOMify core CPU defintions, Peter Crosthwaite, 2015/05/12
- Re: [Qemu-devel] [RFC PATCH 02/34] tcg+qom: QOMify core CPU defintions, Richard Henderson, 2015/05/12
Re: [Qemu-devel] [RFC PATCH 02/34] tcg+qom: QOMify core CPU defintions, Peter Maydell, 2015/05/11
[Qemu-devel] [RFC PATCH 04/34] mb: Change target long to 64b, Peter Crosthwaite, 2015/05/11
Re: [Qemu-devel] [RFC PATCH 00/34] Multi Architecture System Emulation, Peter Maydell, 2015/05/11