[PATCH] ntdll: Allow getting/setting x86_64 context of x86 processes in wine64

[Rafal Harabień]

Hello,

I was thinking about adding some test but the problem is that I have to 
execute 32 bit executable from a 64 bit test and Wine for each 
architecture is built separately. Do you have any suggestions how such 
test should be implemented? Is Wine testbot using standard bi-arch build 
where first wine64 is built and then wine32 with option "--with-wine64"?

Best regards,

Rafał Harabień

On 25.02.2021 23:44, Alexandre Julliard wrote:
> Rafał Harabień <rafalh92 at outlook.com> writes:
>
>> WoW64 process has two separate contexts:
>> - 32 bit context used most of the time (e.g. by application code)
>> - 64 bit context used by system when it quits x86 emulation and jumps to
>>    the kernel code
>> A notable exception are debug registers - their state is shared. Some
>> debuggers make use of that fact and sets/gets debug registers of 32 bit
>> processes using 64 bit thread context.
>>
>> This change adds support for setting and getting debug registers using
>> 64 bit thread context. Getting other registers is allowed too and will
>> return values from 32 bit thread context.
> Some test cases would be nice.
>