9/10/2023 0 Comments Nintendo switch os iso![]() Preempting the "I thought the switch used BSD": wikipedia was wrong, the OS is completely custom, and the kernel is tailor-made. You can find more information about the SVCs at and the IPC layout at. The syscalls are "merged" into a single one to avoid the syscall overhead: Almost all svcReply will be followed by an svcReceive, so merging them into a single call makes a lot of sense. svcReplyAndReceive is used to receive an IPC request and reply to a request, and then wait until a new one is received. It is a synchronous API that will block until the process servicing the call replies to it. svcSendSyncRequest is used to call an IPC. If bigger data than 0x100 bytes is necessary, pointers are passed around, and the Kernel maps it into the process servicing the call. Initially only available to the developer’s Patrons on Patreon, the PSP emulator has now been released publicly. Developer m4xw has released a port of PPSSPP, the most popular PSP emulator out there. When doing IPC, the request is serialized and put into this. The Nintendo Switch is growing as the console of choice for tinkerers and homebrew enthusiasts. ![]() ![]() There is a per-thread IPC zone of 0x100 bytes. Their IPC API is, I believe, pretty smart and elegant: It is, sadly, closed source, however it has been reverse engineered. The Nintendo Switch's Kernel, Horizon/NX, is an example of a microkernel, tailored for their specific use-case, and is in wide use.
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