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can i code like this in 64 bit instead?

Started by daydreamer, October 07, 2022, 08:50:36 PM

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daydreamer

64 bit winabi register preservation rules apply to gdi as well?
Is it possible to have a loop with one or more xmm regs hold data and trust gdi calls keep them preserved,so i can use them in a loop?
But in 32bit i need to preserve registers myself before call ?


my none asm creations
https://masm32.com/board/index.php?topic=6937.msg74303#msg74303
I am an Invoker
"An Invoker is a mage who specializes in the manipulation of raw and elemental energies."
Like SIMD coding

hutch--

They apply to everything. Registers are registers.

zedd151

http://masm32.com/board/index.php?topic=783.0
Don't know if this might help Magnus but I came across that thread during my wanderings about the forum and remember this one.  :biggrin:

HSE

Hi daydreamer!

Quote from: daydreamer on October 07, 2022, 08:50:36 PM
Is it possible to have a loop with one or more xmm regs hold data and trust gdi calls keep them preserved,so i can use them in a loop?

In theory, any procedure that follow x64 ABI must preserve xmm6 through xmm15. And GDI must not be an exception.

But that give me the idea  :thumbsup:

Now I added pseudo push/pop of XMM registers:freg_push xmm6
  · · ·
freg_pop xmm6
 

Test is with ML64 (and removing xmm6 preservation  :biggrin:).

Regards, HSE.
Equations in Assembly: SmplMath

daydreamer

great Hector :thumbsup:
now I understand it better,thanks Zedd,Hutch,Hector

my none asm creations
https://masm32.com/board/index.php?topic=6937.msg74303#msg74303
I am an Invoker
"An Invoker is a mage who specializes in the manipulation of raw and elemental energies."
Like SIMD coding