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flat assembler > Windows > Function return 64 bit value. In which registers ?

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Roman



Joined: 21 Apr 2012
Posts: 346

Function return 64 bit value. In which registers ?

My program 32 bit.
Function glGetTextureHandleARB return 64 bit value.
My question.
In which registers return value ?
I mean low part -> EAX
And high part -> EBX

Or value store in stack ?


Last edited by Roman on 29 Dec 2017, 10:41; edited 1 time in total
Post 29 Dec 2017, 08:25
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Roman



Joined: 21 Apr 2012
Posts: 346

In c++ example:
GLuint64* result = glGetTextureHandleARB(texture);
Post 29 Dec 2017, 08:43
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Furs



Joined: 04 Mar 2016
Posts: 955

High part is in EDX.

However your example shows GLuint64*, which is a pointer, so only EAX. But maybe you had that wrong.
Post 29 Dec 2017, 13:29
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Roman



Joined: 21 Apr 2012
Posts: 346

Yes. EAX=low and EDX=high.
I tested.
Now work fine.
Post 29 Dec 2017, 13:59
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