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Kamd
Cheater
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Joined: 02 May 2018
Posts: 28
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 Posted: Sun Sep 01, 2019 4:42 am Post subject: Compare RAX to an existing address in ASM? |
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I am pretty new to Assembly, so please try explain easily.
Basically, I am working with a shared opcode, for example, a HP damage opcode. I need to make this damage opcode to only effect things that are not writing to my player (health) address.
I already have an assembly script that locates my player structure, and +10 is the offset to my health.
To determine if the damage opcode is writing to my player's health address, I want to compare RAX (write address) to my already-found health address.
Example script:
NOTE: _player is start of player struct defined in the prior script (simplified):
| Code: | ...
registersymbol(_player)
...
customCode:
...
mov [_player],rdx
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So _player+10 is address of my health.
| Code: | hpWrite:
cmp [rax],GetAddress(_player+10) // check if write address is player health address
jne runNormalCode // if rax != playerHpAddress we run the normal damage code
// We didn't jump so this is our player's health. Don't do anything
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sbryzl
Master Cheater
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Joined: 25 Jul 2016
Posts: 252
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| Posted: Sun Sep 01, 2019 4:26 pm Post subject: |
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I'm not too certain about your situation but I think you can just preserve a register, load your address, add 10 and compare it.
| Code: | push rcx
mov rcx,[_player]
add rcx,10
cmp rax,rcx
pop rcx
jne runNormalCode
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