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Re: [Qemu-devel] [PATCH][RFC] Run time TCGv size check for debugging
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] [PATCH][RFC] Run time TCGv size check for debugging |
Date: |
Wed, 29 Oct 2008 21:14:45 +0100 |
User-agent: |
KMail/1.9.9 |
On Wednesday 29 October 2008, Blue Swirl wrote:
> On 10/29/08, Paul Brook <address@hidden> wrote:
> > On Wednesday 29 October 2008, Blue Swirl wrote:
> > > Hi,
> > >
> > > When emulating a mixed 32/64 bit Qemu target CPUs it's easy to confuse
> > > the TCGv size, passing 32 bit TCGv to a function expecting a 64 bit
> > > one and vice versa. This patch adds a run time sanity check for TCGv
> > > sizes.
> >
> > Would it make more sense to push these down into tcg_gen_op* ?
>
> How? At that point we don't know what was the correct size.
I figure there's only a handful of different cases, so it'll be cleaner to
introduce tcg_gen_op_i32_i32 etc. which trivially reduce to tcg_gen_op2 when
debugging is disabled.
Paul