| ; --------------------------------------------- |
| ; Hello World for Win64 Intel x64 Assembly |
| ; |
| ; by fruel (https://github.com/fruel) |
| ; 13 June 2016 |
| ; --------------------------------------------- |
| |
| GetStdHandle PROTO |
| ExitProcess PROTO |
| WriteConsoleA PROTO |
| |
| .data |
| msg BYTE "Hello World!",0 |
| bytesWritten DWORD ? |
| |
| .code |
| mainCRTStartup proc |
| sub rsp, 5 * 8 ; reserve shadow space |
| |
| mov rcx, -11 ; nStdHandle (STD_OUTPUT_HANDLE) |
| call GetStdHandle |
| |
| mov rcx, rax ; hConsoleOutput |
| lea rdx, msg ; *lpBuffer |
| mov r8, LENGTHOF msg - 1 ; nNumberOfCharsToWrite |
| lea r9, bytesWritten ; lpNumberOfCharsWritten |
| mov QWORD PTR [rsp + 4 * SIZEOF QWORD], 0 ; lpReserved |
| call WriteConsoleA |
| |
| mov rcx, 0 ; uExitCode |
| call ExitProcess |
| mainCRTStartup endp |
| END |
