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2009-06-23T12:58:44.697
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2016-05-25T21:40:10.397
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2016-05-25T21:40:10.397
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These are Win32 and Win64 examples using Windows API calls. They are for MASM rather than NASM, but have a look at them. You can find more details in <a href="https://web.archive.org/web/20140225144938/http://www.codegurus.be/codegurus/Programming/assembler&win64_en.htm" rel="noreferrer">this</a> article. <pre><code>;---ASM Hello World Win32 MessageBox .386 .model flat, stdcall include kernel32.inc includelib kernel32.lib include user32.inc includelib user32.lib .data title db 'Win32', 0 msg db 'Hello World', 0 .code Main: push 0 ; uType = MB_OK push offset title ; LPCSTR lpCaption push offset msg ; LPCSTR lpText push 0 ; hWnd = HWND_DESKTOP call MessageBoxA push eax ; uExitCode = MessageBox(...) call ExitProcess End Main ;---ASM Hello World Win64 MessageBox extrn MessageBoxA: PROC extrn ExitProcess: PROC .data title db 'Win64', 0 msg db 'Hello World!', 0 .code main proc sub rsp, 28h mov rcx, 0 ; hWnd = HWND_DESKTOP lea rdx, msg ; LPCSTR lpText lea r8, title ; LPCSTR lpCaption mov r9d, 0 ; uType = MB_OK call MessageBoxA add rsp, 28h mov ecx, eax ; uExitCode = MessageBox(...) call ExitProcess main endp End </code></pre> To assemble and link these using MASM, use this for 32-bit executable: <pre><code>ml.exe [filename] /link /subsystem:windows /defaultlib:kernel32.lib /defaultlib:user32.lib /entry:Main </code></pre> or this for 64-bit executable: <pre><code>ml64.exe [filename] /link /subsystem:windows /defaultlib:kernel32.lib /defaultlib:user32.lib /entry:main </code></pre>
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1. POHow to write hello world in assembler under Windows?
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1. CO+1 for your answer. Can you please add assembly code for Windows on ARM (WOA) too?
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