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[HELP] How to add a value (not offset) to an adress [HELP]

 
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LeFiXER
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PostPosted: Mon Feb 13, 2023 12:09 am    Post subject: Reply with quote
What you're asking is not possible. You will have to add more instructions like the add you mentioned. If you're trying to add a float value then add won't work because that's for integer (whole number) values only.

addss - Add float value (scalar-single)
addsd - Add double value (scalar-double)
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ParkourPenguin
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PostPosted: Mon Feb 13, 2023 1:29 am    Post subject: Reply with quote
Add also works on registers:
Code:
mov eax,[address]
add eax,5

`add` only works for integers. Use `addss` / `addsd` for floats / doubles respectively along with xmm registers.
Code:
movss xmm0,[address]
addss xmm0,[valueAddr]

valueAddr:
  dd (float)5.0
Note `addss` / `addsd` can't take an immediate as an argument. The generally accepted way of working around this is to store the value to add into memory and reference the address it's stored at.
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JamesPardo
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PostPosted: Fri Mar 17, 2023 12:27 am    Post subject: Reply with quote
Thanks for helping me out as well and if I still face any issue, I will message here.
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