IDAPython script to label 3DS syscalls

label_syscalls_3ds.py

# based on info from switchbrew and reswitched
from idaapi import *
from idc import *

syscall_map = {
    0x01: "svcControlMemory",
    0x02: "svcQueryMemory",
    0x03: "svcExitProcess",
    0x04: "svcGetProcessAffinityMask",
    0x05: "svcSetProcessAffinityMask",
    0x06: "svcGetProcessIdealProcessor",
    0x07: "svcSetProcessIdealProcessor",
    0x08: "svcCreateThread",
    0x09: "svcExitThread",
    0x0A: "svcSleepThread",
    0x0B: "svcGetThreadPriority",
    0x0C: "svcSetThreadPriority",
    0x0D: "svcGetThreadAffinityMask",
    0x0E: "svcSetThreadAffinityMask",
    0x0F: "svcGetThreadIdealProcessor",
    0x10: "svcSetThreadIdealProcessor",
    0x11: "svcGetCurrentProcessorNumber",
    0x12: "svcRun",
    0x13: "svcCreateMutex",
    0x14: "svcReleaseMutex",
    0x15: "svcCreateSemaphore",
    0x16: "svcReleaseSemaphore",
    0x17: "svcCreateEvent",
    0x18: "svcSignalEvent",
    0x19: "svcClearEvent",
    0x1A: "svcCreateTimer",
    0x1B: "svcSetTimer",
    0x1C: "svcCancelTimer",
    0x1D: "svcClearTimer",
    0x1E: "svcCreateMemoryBlock",
    0x1F: "svcMapMemoryBlock", 
    0x20: "svcUnmapMemoryBlock",
    0x21: "svcCreateAddressArbiter",
    0x22: "svcArbitrateAddress",
    0x23: "svcCloseHandle",
    0x24: "svcWaitSynchronization1",
    0x25: "svcWaitSynchronizationN",
    0x26: "svcSignalAndWait",
    0x27: "svcDuplicateHandle",
    0x28: "svcGetSystemTick",
    0x29: "svcGetHandleInfo",
    0x2A: "svcGetSystemInfo",
    0x2B: "svcGetProcessInfo",
    0x2C: "svcGetThreadInfo",
    0x2D: "svcConnectToPort",
    0x2E: "svcSendSyncRequest1",
    0x2F: "svcSendSyncRequest2",
    0x30: "svcSendSyncRequest3",
    0x31: "svcSendSyncRequest4",
    0x32: "svcSendSyncRequest",
    0x33: "svcOpenProcess",
    0x34: "svcOpenThread",
    0x35: "svcGetProcessId",
    0x36: "svcGetProcessIdOfThread",
    0x37: "svcGetThreadId",
    0x38: "svcGetResourceLimit",
    0x39: "svcGetResourceLimitLimitValues",
    0x3A: "svcGetResourceLimitCurrentValues",
    0x3B: "svcGetThreadContext",
    0x3C: "svcBreak",
    0x3D: "svcOutputDebugString",
    0x3E: "svcControlPerformanceCounter",
    0x47: "svcCreatePort",
    0x48: "svcCreateSessionToPort",
    0x49: "svcCreateSession",
    0x4A: "svcAcceptSession",
    0x4B: "svcReplyAndReceive1",
    0x4C: "svcReplyAndReceive2",
    0x4D: "svcReplyAndReceive3",
    0x4E: "svcReplyAndReceive4",
    0x4F: "svcReplyAndReceive",
    0x50: "svcBindInterrupt",
    0x51: "svcUnbindInterrupt",
    0x52: "svcInvalidateProcessDataCache",
    0x53: "svcStoreProcessDataCache",
    0x54: "svcFlushProcessDataCache",
    0x55: "svcStartInterProcessDma",
    0x56: "svcStopDma",
    0x57: "svcGetDmaState",
    0x58: "svcRestartDma",
    0x59: "svcSetGpuProt",
    0x5A: "svcSetWifiEnabled",
    0x60: "svcDebugActiveProcess",
    0x61: "svcBreakDebugProcess",
    0x62: "svcTerminateDebugProcess",
    0x63: "svcGetProcessDebugEvent",
    0x64: "svcContinueDebugEvent",
    0x65: "svcGetProcessList",
    0x66: "svcGetThreadList",
    0x67: "svcGetDebugThreadContext",
    0x68: "svcSetDebugThreadContext",
    0x69: "svcQueryDebugProcessMemory",
    0x6A: "svcReadProcessMemory",
    0x6B: "svcWriteProcessMemory",
    0x6C: "svcSetHardwareBreakPoint",
    0x6D: "svcGetDebugThreadParam",
    0x70: "svcControlProcessMemory",
    0x71: "svcMapProcessMemory",
    0x72: "svcUnmapProcessMemory",
    0x73: "svcCreateCodeSet",
    0x74: "svcRandomStub",
    0x75: "svcCreateProcess",
    0x76: "svcTerminateProcess",
    0x77: "svcSetProcessResourceLimits",
    0x78: "svcCreateResourceLimit",
    0x79: "svcSetResourceLimitValues",
    0x7A: "svcAddCodeSegment",
    0x7B: "svcBackdoor",
    0x7C: "svcKernelSetState",
    0x7D: "svcQueryProcessMemory"
}

for segea in Segments():
    for funcea in Functions(segea, SegEnd(segea)):
        for (startea, endea) in Chunks(funcea):
            for head in Heads(startea, endea):
                if GetMnem(head) == 'SVC':
                    syscall_num = GetOperandValue(head, 0)
                    if syscall_num in syscall_map:
                        MakeNameEx(startea, syscall_map[syscall_num], SN_NOWARN)
                    else:
                        MakeNameEx(startea, "svcUnknown" + hex(syscall_num)[:-1], SN_NOWARN)