Kernel ABI

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Inputs are read from registers starting from r0 and outputs are written back to the same registers (also starting with r0).

ID Name Inputs Outputs
0x01 ControlMemory

r0: MemoryOperation operation
r1: u32/void* addr0
r2: u32/void* addr1
r3: u32 size
r4: MemoryPermission permissions

r0: Result
r1: u32/void* addr_out

0x02 QueryMemory

r2?: u32/void* addr

r0: Result
r1: u32 base_process_virtual_address
r2: u32 size
r3: MemoryPermission permission
r4: MemoryState state
r5: PageFlags page_flags

0x03 ExitProcess None None, doesn't return
0x04 GetProcessAffinityMask

r0: [out] u8* affinitymask
r1: Handle<KProcess> process
r2: s32 processorcount

r0: Result

0x05 SetProcessAffinityMask

r0: Handle<KProcess> process
r1: [in] const u8* affinitymask
r2: s32 processorcount

r0: Result

0x06 GetProcessIdealProcessor

r1?: Handle<KProcess> process

r0: Result
r1: s32 processorid
r2: Clobbered?

0x07 SetProcessIdealProcessor

r0: Handle<KProcess> process
r1: s32 processorid

r0: Result

0x08 CreateThread

r0: s32 thread_priority
r1: ThreadFunc entrypoint
r2: u32 arg
r3: u32/void* stack_top
r4: s32 processor_id

r0: Result
r1: Handle<KThread> thread_handle

0x09 ExitThread None None, doesn't return
0x0A SleepThread

r0-r1: s64 nanoseconds

None
0x0B GetThreadPriority

r0: Ignored?
r1: Handle thread_handle

r0: Result
r1: s32 thread_priority
r2: Clobbered?

0x0C SetThreadPriority

r0: Handle<KThread> thread_handle
r1: s32 thread_priority

r0: Result

0x0D GetThreadAffinityMask

r0: [out] u8* affinitymask
r1: Handle<KThread> thread_handle
r2: s32 processorcount

r0: Result

0x0E SetThreadAffinityMask

r0: Handle<KThread> thread_handle
r1: [in] const u8* affinitymask
r2: s32 processorcount

r0: Result

0x0F GetThreadIdealProcessor

r0: Ignored?
r1: Handle<KThread> thread_handle

r0: Result
r1: s32 processorid

0x10 SetThreadIdealProcessor

r0: Handle<KThread> thread_handle
r1: s32 processorid

r0: Result

0x11 GetProcessorID

None

r0: s32 processorid

0x24 WaitSynchronization1

r0: Handle<KSynchronizationObject> handle
r2-r3: s64 timeout

r0: Result

0x1B SetTimer Timer handle, initial_low, interval_low, initial_high, interval_high Result
0x2D ConnectToPort ??
r1: pointer to port name
r0: Result
r1: handle to KClientSession
0x32 SendSyncRequest r0: handle to KClientSession r0: Result