Bob and I started debugging this and we found the issue:
Let's say that we have this code:
Name (BUF1, Buffer (0x10) {})
Method (M001)
{
CreateField (BUF1, 1, 72, FLD0)
local0 = FLD0 // BUG: store operator (aka =) converts FLD0 into an integer
return (ObjectType (local0)) // Integer is returned
}
Although FLD0's value is small enough to fit in an integer, the bit length of FLD0 exceeds 64 bits so local0 should actually be a Buffer type.
This is likely an issue in the implicit object conversion rules implemented in the store operator. I'll take a look at this next week or the week after...
Thanks for your patience,
Erik
> -----Original Message-----
> From: Moore, Robert <robert.moore@xxxxxxxxx>
> Sent: Friday, November 22, 2019 2:07 PM
> To: Moore, Robert <robert.moore@xxxxxxxxx>; Maximilian Luz
> <luzmaximilian@xxxxxxxxx>; Schmauss, Erik <erik.schmauss@xxxxxxxxx>;
> Wysocki, Rafael J <rafael.j.wysocki@xxxxxxxxx>
> Cc: linux-acpi@xxxxxxxxxxxxxxx; devel@xxxxxxxxxx
> Subject: RE: PROBLEM: Calling ObjectType on buffer field reports type integer
>
> I'm not seeing this problem. For example:
> Method (DS01)
> {
> Name(BUFZ, Buffer(48){})
> CreateField(BUFZ, 192, 69, DST0)
> Store (ObjectType (DST0), Debug)
> }
>
> Acpiexec dsdt.aml
> Eval DS01
> Evaluating \DS01
> ACPI Debug: 0x000000000000000E
>
> 0x0E is in fact type "buffer field".
>
>
> -----Original Message-----
> From: Moore, Robert <robert.moore@xxxxxxxxx>
> Sent: Friday, November 22, 2019 9:12 AM
> To: Maximilian Luz <luzmaximilian@xxxxxxxxx>; Schmauss, Erik
> <erik.schmauss@xxxxxxxxx>; Wysocki, Rafael J <rafael.j.wysocki@xxxxxxxxx>
> Cc: linux-acpi@xxxxxxxxxxxxxxx; devel@xxxxxxxxxx
> Subject: [Devel] Re: PROBLEM: Calling ObjectType on buffer field reports type
> integer
>
> We will probably make this change, depending on what Windows does.
> Bob
>
>
> -----Original Message-----
> From: Maximilian Luz <luzmaximilian@xxxxxxxxx>
> Sent: Sunday, November 10, 2019 1:30 PM
> To: Schmauss, Erik <erik.schmauss@xxxxxxxxx>; Moore, Robert
> <robert.moore@xxxxxxxxx>; Wysocki, Rafael J <rafael.j.wysocki@xxxxxxxxx>
> Cc: linux-acpi@xxxxxxxxxxxxxxx; devel@xxxxxxxxxx
> Subject: Re: PROBLEM: Calling ObjectType on buffer field reports type integer
>
>
> On 7/23/19 1:01 AM, Schmauss, Erik wrote:
> > Sorry about the late response. This slipped through the cracks.
> > I've sent them an email just now and I'll keep you informed
>
> Hi again,
>
> is there any update on this?
>
> Regards,
>
> Maximilian
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