216 lines
13 KiB
NASM
216 lines
13 KiB
NASM
; syscall_stubs.asm - user-mode INT 0x40 stubs exported by syscall.dll (MASM64)
|
|
;
|
|
; Calling convention (kernel side):
|
|
; RAX = syscall number
|
|
; RCX = arg 0
|
|
; RDX = arg 1
|
|
; R8 = arg 2
|
|
; R9 = arg 3
|
|
; R10 = arg 4 (our extension - loaded from the stack by SYSCALL_STUB6)
|
|
; R11 = arg 5 (our extension - loaded from the stack by SYSCALL_STUB6)
|
|
;
|
|
; User-mode callers follow standard MS x64: args 1-4 in RCX/RDX/R8/R9,
|
|
; args 5+ on the stack above the home area ([rsp+28h], [rsp+30h], ...).
|
|
;
|
|
; SYSCALL_STUB2 - 4 or fewer args: pure register passing, no stack read.
|
|
; SYSCALL_STUB6 - 5 or 6 args: loads [rsp+28h] -> R10 and [rsp+30h] -> R11.
|
|
;
|
|
; Handle lifecycle:
|
|
; SysCloseHandle is the single close stub for every object type.
|
|
; There is no SysCloseFile - files are closed through the unified path,
|
|
; exactly like mutexes, semaphores, events, and queues.
|
|
|
|
INCLUDE syscall_nr.inc
|
|
|
|
.CODE
|
|
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 MACRO name, nr
|
|
PUBLIC Sys&name
|
|
Sys&name PROC EXPORT
|
|
mov rax, nr
|
|
int 40h
|
|
ret
|
|
Sys&name ENDP
|
|
ENDM
|
|
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB6 MACRO name, nr
|
|
PUBLIC Sys&name
|
|
Sys&name PROC EXPORT
|
|
mov r10, [rsp+28h] ; 5th argument
|
|
mov r11, [rsp+30h] ; 6th argument
|
|
mov rax, nr
|
|
int 40h
|
|
ret
|
|
Sys&name ENDP
|
|
ENDM
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Process & Thread
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 ExitProcess, SYS_EXIT_PROCESS ; (int exitCode) -> void
|
|
SYSCALL_STUB2 ExitThread, SYS_EXIT_THREAD ; (int exitCode) -> void
|
|
SYSCALL_STUB2 CreateThread, SYS_CREATE_THREAD ; (uint64_t entry, uint64_t arg, uint32_t priority, uint32_t* tidOut) -> KSTATUS
|
|
SYSCALL_STUB2 GetCurrentTid, SYS_GET_CURRENT_TID ; () -> uint32_t
|
|
SYSCALL_STUB2 GetCurrentPid, SYS_GET_CURRENT_PID ; () -> uint32_t
|
|
SYSCALL_STUB2 Yield, SYS_YIELD ; () -> void
|
|
SYSCALL_STUB2 Sleep, SYS_SLEEP ; (uint32_t ms) -> void
|
|
SYSCALL_STUB2 SetThreadPriority, SYS_SET_THREAD_PRIORITY ; (uint32_t priority) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Memory
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 Alloc, SYS_ALLOC ; (size_t size) -> void* (NULL on failure)
|
|
SYSCALL_STUB2 Free, SYS_FREE ; (void* ptr, size_t size) -> void
|
|
SYSCALL_STUB2 Realloc, SYS_REALLOC ; (void* ptr, size_t newSize) -> void*
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Mutex
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 MutexCreate, SYS_MUTEX_CREATE ; (uint32_t* handleOut) -> KSTATUS
|
|
SYSCALL_STUB2 MutexAcquire, SYS_MUTEX_ACQUIRE ; (uint32_t handle) -> KSTATUS
|
|
SYSCALL_STUB2 MutexTryAcquire, SYS_MUTEX_TRY_ACQUIRE ; (uint32_t handle) -> KSTATUS
|
|
SYSCALL_STUB2 MutexRelease, SYS_MUTEX_RELEASE ; (uint32_t handle) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Semaphore
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 SemCreate, SYS_SEM_CREATE ; (int32_t initial, int32_t max, uint32_t* handleOut) -> KSTATUS
|
|
SYSCALL_STUB2 SemWait, SYS_SEM_WAIT ; (uint32_t handle) -> KSTATUS
|
|
SYSCALL_STUB2 SemTryWait, SYS_SEM_TRY_WAIT ; (uint32_t handle) -> KSTATUS
|
|
SYSCALL_STUB2 SemSignal, SYS_SEM_SIGNAL ; (uint32_t handle) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Event
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 EventCreate, SYS_EVENT_CREATE ; (uint32_t* handleOut) -> KSTATUS
|
|
SYSCALL_STUB2 EventSignal, SYS_EVENT_SIGNAL ; (uint32_t handle) -> KSTATUS
|
|
SYSCALL_STUB2 EventClear, SYS_EVENT_CLEAR ; (uint32_t handle) -> KSTATUS
|
|
SYSCALL_STUB2 EventWait, SYS_EVENT_WAIT ; (uint32_t handle) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Queue
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 QueueCreate, SYS_QUEUE_CREATE ; (uint32_t* handleOut) -> KSTATUS
|
|
SYSCALL_STUB2 QueueSend, SYS_QUEUE_SEND ; (uint32_t handle, void* msg, int blocking) -> KSTATUS
|
|
SYSCALL_STUB2 QueueRecv, SYS_QUEUE_RECV ; (uint32_t handle, void* msg, int blocking) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Handle (unified - use for files, mutexes, semaphores, events, queues)
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 CloseHandle, SYS_CLOSE_HANDLE ; (uint32_t handle) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; File I/O
|
|
; (To close: SysCloseHandle(handle) - no dedicated SysCloseFile)
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 OpenFile, SYS_OPEN_FILE ; (const char* path, uint32_t* handleOut) -> KSTATUS
|
|
SYSCALL_STUB2 ReadFile, SYS_READ_FILE ; (uint32_t handle, void* buf, size_t size, size_t* bytesReadOut) -> KSTATUS
|
|
SYSCALL_STUB2 WriteFile, SYS_WRITE_FILE ; (uint32_t handle, const void* buf, size_t size, size_t* bytesWrittenOut) -> KSTATUS
|
|
SYSCALL_STUB2 CreateFile, SYS_CREATE_FILE ; (const char* path, uint32_t* handleOut) -> KSTATUS
|
|
SYSCALL_STUB2 DeleteFile, SYS_DELETE_FILE ; (const char* path) -> KSTATUS
|
|
SYSCALL_STUB2 TruncateFile, SYS_TRUNCATE_FILE ; (uint32_t handle, uint64_t newSize) -> KSTATUS
|
|
SYSCALL_STUB2 GetFilePos, SYS_GET_FILE_POS ; (uint32_t handle) -> uint64_t
|
|
SYSCALL_STUB2 SeekFile, SYS_SEEK_FILE ; (uint32_t handle, uint64_t offset) -> KSTATUS
|
|
SYSCALL_STUB2 GetFileSize, SYS_GET_FILE_SIZE ; (uint32_t handle) -> uint64_t
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Screen
|
|
; SysScreenBlit has 5 args (x, y, w, h, pixels) - needs SYSCALL_STUB6.
|
|
; SysScreenPutChar has 5 args (c, x, y, fg, bg) - needs SYSCALL_STUB6.
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB6 ScreenBlit, SYS_SCREEN_BLIT ; (int x, int y, int w, int h, const uint32_t* pixels) -> void
|
|
SYSCALL_STUB2 ScreenClear, SYS_SCREEN_CLEAR ; (uint32_t color) -> void
|
|
SYSCALL_STUB2 ScreenGetSize, SYS_SCREEN_GET_SIZE ; (int* widthOut, int* heightOut) -> void
|
|
SYSCALL_STUB6 ScreenPutChar, SYS_SCREEN_PUT_CHAR ; (char c, int x, int y, uint32_t fg, uint32_t bg) -> void
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Keyboard
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 KbPoll, SYS_KB_POLL ; () -> uint32_t (1 if key available, 0 otherwise)
|
|
SYSCALL_STUB2 KbIsKeyDown, SYS_KB_IS_KEY_DOWN ; (int scancode) -> uint32_t (1 if down, 0 otherwise)
|
|
SYSCALL_STUB2 KbReadChar, SYS_KB_READ_CHAR ; () -> char (blocks, yields while waiting)
|
|
SYSCALL_STUB2 KbReadScancode, SYS_KB_READ_SCANCODE ; () -> uint8_t (blocks, yields while waiting)
|
|
SYSCALL_STUB2 KbGetModifiers, SYS_KB_GET_MODIFIERS ; () -> uint32_t (current modifier bitmask)
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Mouse
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 MousePoll, SYS_MOUSE_POLL ; () -> uint32_t (1 if packet waiting, 0 otherwise)
|
|
SYSCALL_STUB2 MouseRead, SYS_MOUSE_READ ; (int* dx, int* dy, uint8_t* buttons) -> uint32_t (1=ok, 0=empty)
|
|
SYSCALL_STUB2 MouseGetPos, SYS_MOUSE_GET_POS ; (int* x, int* y) -> void
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Timer
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 GetTick, SYS_GET_TICK ; () -> uint64_t (milliseconds since boot)
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Debug
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 DebugPrint, SYS_DEBUG_PRINT ; (const char* str) -> void
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Process launch & lifecycle
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 CreateProcess, SYS_CREATE_PROCESS ; (const char* path, const char* args, uint32_t* pidOut) -> KSTATUS
|
|
SYSCALL_STUB2 WaitForProcess, SYS_WAIT_FOR_PROCESS ; (uint32_t pid) -> KSTATUS
|
|
SYSCALL_STUB2 GetProcessExitCode, SYS_GET_PROCESS_EXIT_CODE ; (uint32_t pid, int* exitCodeOut) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Console output (white text, for user programs)
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 WriteConsole, SYS_WRITE_CONSOLE ; (const char* str, size_t len) -> void
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Directory enumeration
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 OpenDir, SYS_OPEN_DIR ; (const char* path, uint32_t* handleOut) -> KSTATUS
|
|
SYSCALL_STUB2 ReadDir, SYS_READ_DIR ; (uint32_t handle, DirEntry* entryOut) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Current Working Directory
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 SetCwd, SYS_SET_CWD ; (const char* path) -> KSTATUS
|
|
SYSCALL_STUB2 GetCwd, SYS_GET_CWD ; (char* buf, size_t buflen) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Thread join (used by pthread_join in posix.dll)
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 WaitThread, SYS_WAIT_THREAD ; (uint32_t tid) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Process PID query (used by posix_spawn -> waitpid in posix.dll)
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 GetProcessPid, SYS_GET_PROCESS_PID ; (uint32_t pid) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Named Queue Registry
|
|
; SysPublishQueue - register a queue under a name (call once at startup)
|
|
; SysOpenNamedQueue - resolve a name to a handle (retry until SUCCESS)
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 PublishQueue, SYS_PUBLISH_QUEUE ; (const char* name, uint32_t queueHandle) -> KSTATUS
|
|
SYSCALL_STUB2 OpenNamedQueue, SYS_OPEN_NAMED_QUEUE ; (const char* name, uint32_t* handleOut) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Handle duplication
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 QueueDuplicate, SYS_QUEUE_DUPLICATE ; (uint32_t handle, uint32_t targetPid, uint32_t* handleOut) -> KSTATUS
|
|
SYSCALL_STUB2 NamedQueueOwnerPid, SYS_NAMED_QUEUE_OWNER_PID ; (const char* name, uint32_t* pidOut) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Process utilities
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 KillProcess, SYS_KILL_PROCESS ; (uint32_t pid, int exitCode) -> KSTATUS
|
|
SYSCALL_STUB2 GetProcessList, SYS_GET_PROCESS_LIST ; (uint32_t* pidsOut, size_t maxCount, size_t* countOut) -> KSTATUS
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Filesystem mutations
|
|
; ---------------------------------------------------------------------------
|
|
SYSCALL_STUB2 RenameFile, SYS_RENAME_FILE ; (const char* oldPath, const char* newPath) -> KSTATUS
|
|
SYSCALL_STUB2 CreateDir, SYS_CREATE_DIR ; (const char* path) -> KSTATUS
|
|
SYSCALL_STUB2 RemoveDir, SYS_REMOVE_DIR ; (const char* path) -> KSTATUS
|
|
|
|
END
|