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Re: [Qemu-devel] TCG debugging improvements
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] TCG debugging improvements |
Date: |
Tue, 18 Nov 2008 10:39:14 +0100 |
User-agent: |
Mozilla-Thunderbird 2.0.0.17 (X11/20081018) |
Blue Swirl a écrit :
> On 11/17/08, Paul Brook <address@hidden> wrote:
>> I'd just applied changes that enforce type size checking for TCG variables
>> when DEBUG_TCGV is defined. This should help avoid subtle bugs due to
>> 64/32-bit mismatches.
>>
>> I fixed a few bugs in the process, but it's mostly mechanical changes. TCGv
>> is target_ulong sized, so the majority of code remains unchanged. Explicit
>> sizes are typically only required when working with different sized ops, or
>> floating point.
>>
>> One of the main side-effects of this is that helper functions now need to be
>> declared properly. Previously we sort-of did this, but not consistently
>> enough to enforce types. With the exception of the SSE/MMX ops (which are
>> table driven and use messy typecasts) we should be able to detect
>> inconsistencies between the code generator and the helper function
>> implementations.
>>
>> There should be no functional changes. I've tested what I can, but please
>> test your favourite host/target.
>
> PPC is broken. This used to print something, now it doesn't:
> ./qemu-system-ppc -L ./pc-bios/ -hda /dev/null
>
That should be fixed in the SVN.
--
.''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
: :' : Debian developer | Electrical Engineer
`. `' address@hidden | address@hidden
`- people.debian.org/~aurel32 | www.aurel32.net