How to declare couple of bytes in inline assembly?
lazarus / 21-General

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LemonParty · 2025-03-18 13:45

Hello.
I need to declare a couple of bytes in assembly block to replace
unrecognized instruction.
Architecture AARCH64.

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Thaddy · 2025-03-18 13:46

db ?

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LemonParty · 2025-03-18 13:53

"db"
Not work.

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Zvoni · 2025-03-18 14:35

Reminds of a WhatsApp-Chat i saw...

User 1: What's this? (Shows a Picture of a USB-C connector)
User 2: Type C
User 1: C
User 1: Doesn't work

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Thaddy · 2025-03-18 15:03

Usually this is assembler agnostic:
Code: [Select]DB 0x90, 0x90, 0x90  // Three Intel NOP instructions in
a rowYou should be able to use the same for AARCH64. As long as you
know the instruction byte order, that is.

You obviously did not know about the db instruction/directive..
It works, the code example is for intel though.
Fully supported for AARCH64 instructions in byte notation.

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LemonParty · 2025-03-18 15:21

I found the solution.
Code: ASM  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i .byte
1,2,3,4

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Thaddy · 2025-03-18 15:32

That is the same indeed.