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Questions - masm64

Calling printf or puts from MASM64 assembly does nothing, but calling WriteConsoleA works?

I am currently trying to learn assembly programming with MASM64. I have managed to get WriteConsoleA to work, but am stuck trying to use C functions like printf or puts. It should be noted that I am u...
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Mikolmisol

assembly

winapi

stdio

masm64

Votes: 0

Answers: 1

Latest Answer

Thanks @RbMm, not sure how I had managed to use mov instead of sub. Oddly enough, I tried to run it via a VSCode task that simply called the executable through the shell - and that did end up printing...
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Mikolmisol

Tabulate function Y=3.3\*log(2)(x^2+1)

Can't log2 to masm64. How exactly do I apply fyl2x in my code? I can't figure out where to apply this piece of code. Basically, the program crashes, or incorrect data. Here is my code: \`include win64...
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Ana_406

masm64

Votes: 0

Answers: 1

Latest Answer

Try this code: fld1 ; Push 1 onto the FPU stack. fld x ; Push x onto the FPU stack. fyl2x ; Compute log base 2 of x and store the result on top of the FPU stack.
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Danny Cohen

MASM64 reverse tcp shell - cmd not binding to socket

I'm trying to write code that creates a reverse connection and binds a cmd.exe to a socket. There are no errors - I created socket, connecttion and the cmd process started in the OS, but in the consol...
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Slava

masm64

Votes: 0

Answers: 0

WM_DESTROY message not being received by WndProc in x64 Windows Assembly Program

I'm trying to recreate using MASM /w Visual Studio 2019 something similar to the following C++ code which works. Essentially at this stage just want the window to be movable and the close button to wo...
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Malcolm McCaffery

winapi

masm

masm64

Votes: 0

Answers: 1

Latest Answer

error in code - in both procs - sub rsp, 8 when from x64 calling convention The caller is responsible for allocating space for the callee's parameters. The caller must always allocate sufficient spac...
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RbMm

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