major restructuring, prepare for smp
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; syscall_stubs.asm - user-mode INT 0x40 stubs exported by syscall.dll (MASM64)
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;
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; Calling convention (kernel side):
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; RAX = syscall number
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; RCX = arg 0
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; RDX = arg 1
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; R8 = arg 2
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; R9 = arg 3
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; R10 = arg 4 (our extension - loaded from the stack by SYSCALL_STUB6)
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; R11 = arg 5 (our extension - loaded from the stack by SYSCALL_STUB6)
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;
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; User-mode callers follow standard MS x64: args 1-4 in RCX/RDX/R8/R9,
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; args 5+ on the stack above the home area ([rsp+28h], [rsp+30h], ...).
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;
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; SYSCALL_STUB2 - 4 or fewer args: pure register passing, no stack read.
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; SYSCALL_STUB6 - 5 or 6 args: loads [rsp+28h] -> R10 and [rsp+30h] -> R11.
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;
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; Handle lifecycle:
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; SysCloseHandle is the single close stub for every object type.
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; There is no SysCloseFile - files are closed through the unified path,
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; exactly like mutexes, semaphores, events, and queues.
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INCLUDE syscall_nr.inc
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SYS_USER_APC_FRAME_Magic EQU 0
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SYS_USER_APC_FRAME_OriginalRip EQU 8
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SYS_USER_APC_FRAME_OriginalRsp EQU 16
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SYS_USER_APC_FRAME_OriginalRflags EQU 24
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SYS_USER_APC_FRAME_OriginalRax EQU 32
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SYS_USER_APC_FRAME_Routine EQU 40
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SYS_USER_APC_FRAME_NormalContext EQU 48
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SYS_USER_APC_FRAME_SystemArgument1 EQU 56
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SYS_USER_APC_FRAME_SystemArgument2 EQU 64
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.CODE
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 MACRO name, nr
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PUBLIC Sys&name
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Sys&name PROC EXPORT
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mov rax, nr
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int 40h
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ret
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Sys&name ENDP
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ENDM
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; ---------------------------------------------------------------------------
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SYSCALL_STUB6 MACRO name, nr
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PUBLIC Sys&name
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Sys&name PROC EXPORT
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mov r10, [rsp+28h] ; 5th argument
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mov r11, [rsp+30h] ; 6th argument
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mov rax, nr
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int 40h
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ret
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Sys&name ENDP
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ENDM
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; ---------------------------------------------------------------------------
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; Process & thread lifecycle
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 ExitProcess, SYS_EXIT_PROCESS
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SYSCALL_STUB2 ExitThread, SYS_EXIT_THREAD
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SYSCALL_STUB2 CreateProcess, SYS_CREATE_PROCESS
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SYSCALL_STUB2 WaitForProcess, SYS_WAIT_FOR_PROCESS
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SYSCALL_STUB2 GetProcessExitCode, SYS_GET_PROCESS_EXIT_CODE
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SYSCALL_STUB2 KillProcess, SYS_KILL_PROCESS
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SYSCALL_STUB2 GetProcessList, SYS_GET_PROCESS_LIST
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SYSCALL_STUB2 GetProcessPid, SYS_GET_PROCESS_PID
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SYSCALL_STUB2 CreateThread, SYS_CREATE_THREAD
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SYSCALL_STUB2 WaitThread, SYS_WAIT_THREAD
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SYSCALL_STUB2 GetCurrentTid, SYS_GET_CURRENT_TID
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SYSCALL_STUB2 GetCurrentPid, SYS_GET_CURRENT_PID
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SYSCALL_STUB2 SetThreadPriority, SYS_SET_THREAD_PRIORITY
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SYSCALL_STUB2 Yield, SYS_YIELD
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SYSCALL_STUB2 Sleep, SYS_SLEEP
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SYSCALL_STUB2 SetUserApcDispatcher, SYS_SET_USER_APC_DISPATCHER
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SYSCALL_STUB2 ApcReturn, SYS_APC_RETURN
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; ---------------------------------------------------------------------------
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; User APC dispatcher
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; ---------------------------------------------------------------------------
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PUBLIC SysUserApcDispatcher
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SysUserApcDispatcher PROC EXPORT
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; Kernel enters here with RSP pointing at SYS_USER_APC_FRAME. There is no
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; return address because this is an IRET redirection. Preserve RBX because
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; the original user context resumes after SysApcReturn.
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push rbx
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lea rbx, [rsp + 8] ; original injected RSP = frame pointer
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sub rsp, 32 ; shadow space; RSP is already call-aligned
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mov rcx, [rbx + SYS_USER_APC_FRAME_NormalContext]
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mov rdx, [rbx + SYS_USER_APC_FRAME_SystemArgument1]
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mov r8, [rbx + SYS_USER_APC_FRAME_SystemArgument2]
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mov rax, [rbx + SYS_USER_APC_FRAME_Routine]
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call rax
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add rsp, 32
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mov rcx, rbx ; SysApcReturn(frame)
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mov rbx, [rsp] ; restore original user RBX
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add rsp, 8
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mov rax, SYS_APC_RETURN
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int 40h
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SysUserApcDispatcher_Failed:
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jmp SysUserApcDispatcher_Failed
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SysUserApcDispatcher ENDP
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; ---------------------------------------------------------------------------
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; Memory and handles
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 Alloc, SYS_ALLOC
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SYSCALL_STUB2 Free, SYS_FREE
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SYSCALL_STUB2 Realloc, SYS_REALLOC
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SYSCALL_STUB2 CloseHandle, SYS_CLOSE_HANDLE
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; ---------------------------------------------------------------------------
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; Synchronization objects
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 MutexCreate, SYS_MUTEX_CREATE
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SYSCALL_STUB2 MutexAcquire, SYS_MUTEX_ACQUIRE
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SYSCALL_STUB2 MutexTryAcquire, SYS_MUTEX_TRY_ACQUIRE
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SYSCALL_STUB2 MutexRelease, SYS_MUTEX_RELEASE
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SYSCALL_STUB2 SemCreate, SYS_SEM_CREATE
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SYSCALL_STUB2 SemWait, SYS_SEM_WAIT
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SYSCALL_STUB2 SemTryWait, SYS_SEM_TRY_WAIT
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SYSCALL_STUB2 SemSignal, SYS_SEM_SIGNAL
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SYSCALL_STUB2 EventCreate, SYS_EVENT_CREATE
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SYSCALL_STUB2 EventSignal, SYS_EVENT_SIGNAL
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SYSCALL_STUB2 EventClear, SYS_EVENT_CLEAR
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SYSCALL_STUB2 EventWait, SYS_EVENT_WAIT
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; ---------------------------------------------------------------------------
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; Queues and named queues
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 QueueCreate, SYS_QUEUE_CREATE
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SYSCALL_STUB2 QueueSend, SYS_QUEUE_SEND
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SYSCALL_STUB2 QueueRecv, SYS_QUEUE_RECV
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SYSCALL_STUB2 PublishQueue, SYS_PUBLISH_QUEUE
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SYSCALL_STUB2 OpenNamedQueue, SYS_OPEN_NAMED_QUEUE
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SYSCALL_STUB2 QueueDuplicate, SYS_QUEUE_DUPLICATE
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SYSCALL_STUB2 NamedQueueOwnerPid, SYS_NAMED_QUEUE_OWNER_PID
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; ---------------------------------------------------------------------------
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; Files, directories, and current directory
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 OpenFile, SYS_OPEN_FILE
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SYSCALL_STUB2 CreateFile, SYS_CREATE_FILE
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SYSCALL_STUB2 ReadFile, SYS_READ_FILE
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SYSCALL_STUB2 WriteFile, SYS_WRITE_FILE
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SYSCALL_STUB2 ReadFileAsync, SYS_READ_FILE_ASYNC
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SYSCALL_STUB2 WriteFileAsync, SYS_WRITE_FILE_ASYNC
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SYSCALL_STUB2 CancelIo, SYS_CANCEL_IO
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SYSCALL_STUB2 SeekFile, SYS_SEEK_FILE
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SYSCALL_STUB2 GetFilePos, SYS_GET_FILE_POS
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SYSCALL_STUB2 GetFileSize, SYS_GET_FILE_SIZE
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SYSCALL_STUB2 TruncateFile, SYS_TRUNCATE_FILE
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SYSCALL_STUB2 DeleteFile, SYS_DELETE_FILE
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SYSCALL_STUB2 RenameFile, SYS_RENAME_FILE
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SYSCALL_STUB2 OpenDir, SYS_OPEN_DIR
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SYSCALL_STUB2 ReadDir, SYS_READ_DIR
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SYSCALL_STUB2 CreateDir, SYS_CREATE_DIR
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SYSCALL_STUB2 RemoveDir, SYS_REMOVE_DIR
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SYSCALL_STUB2 SetCwd, SYS_SET_CWD
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SYSCALL_STUB2 GetCwd, SYS_GET_CWD
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; ---------------------------------------------------------------------------
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; Console and graphics
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 WriteConsole, SYS_WRITE_CONSOLE
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SYSCALL_STUB6 ScreenBlit, SYS_SCREEN_BLIT
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SYSCALL_STUB2 ScreenClear, SYS_SCREEN_CLEAR
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SYSCALL_STUB2 ScreenGetSize, SYS_SCREEN_GET_SIZE
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SYSCALL_STUB6 ScreenPutChar, SYS_SCREEN_PUT_CHAR
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; ---------------------------------------------------------------------------
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; Input
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 KbPoll, SYS_KB_POLL
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SYSCALL_STUB2 KbIsKeyDown, SYS_KB_IS_KEY_DOWN
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SYSCALL_STUB2 KbReadChar, SYS_KB_READ_CHAR
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SYSCALL_STUB2 KbReadScancode, SYS_KB_READ_SCANCODE
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SYSCALL_STUB2 KbGetModifiers, SYS_KB_GET_MODIFIERS
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SYSCALL_STUB2 MousePoll, SYS_MOUSE_POLL
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SYSCALL_STUB2 MouseRead, SYS_MOUSE_READ
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SYSCALL_STUB2 MouseGetPos, SYS_MOUSE_GET_POS
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; ---------------------------------------------------------------------------
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; Time and debug
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 GetTick, SYS_GET_TICK
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SYSCALL_STUB2 DebugPrint, SYS_DEBUG_PRINT
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SYSCALL_STUB2 QueryTrapFrame, SYS_QUERY_TRAP_FRAME
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; ---------------------------------------------------------------------------
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; Native sockets
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; ---------------------------------------------------------------------------
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SYSCALL_STUB2 Socket, SYS_SOCKET
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SYSCALL_STUB2 Bind, SYS_BIND
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SYSCALL_STUB2 Listen, SYS_LISTEN
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SYSCALL_STUB2 Accept, SYS_ACCEPT
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SYSCALL_STUB2 Connect, SYS_CONNECT
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SYSCALL_STUB6 Send, SYS_SEND
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SYSCALL_STUB6 Recv, SYS_RECV
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SYSCALL_STUB2 Shutdown, SYS_SHUTDOWN
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SYSCALL_STUB2 SendTo, SYS_SEND_TO
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SYSCALL_STUB2 RecvFrom, SYS_RECV_FROM
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SYSCALL_STUB2 ResolveHost, SYS_RESOLVE_HOST
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SYSCALL_STUB2 SetSocketOption, SYS_SET_SOCKET_OPTION
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SYSCALL_STUB2 GetSocketOption, SYS_GET_SOCKET_OPTION
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SYSCALL_STUB2 Poll, SYS_POLL
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SYSCALL_STUB2 GetMemoryStatus, SYS_GET_MEMORY_STATUS
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END
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