x64 calling convention – register usage
RAX Volatile Return value register. RCX Volatile First integer argument. RDX Volatile Second integer argument. R8 Volatile Third integer argument. R9 Volatile Fourth integer argument. R10:R11 Volatile Must be preserved as required by caller; used in syscall/sysret instructions. R12:R15 Nonvolatile Must be preserved by called function. RDI Nonvolatile Must be preserved by called function. RSI … More x64 calling convention – register usage
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