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IPC commands are written to the [[Thread Local Storage]] at offset 0x80 and submitted using [[SVC|svcSendSyncRequest]]. If the kernel was able to dispatch the request, the server reply will be written to TLS+0x80. Often the first word of the response data is the error code (or 0 if success).

IPC commands are written to the [[Thread Local Storage]] at offset 0x80 and submitted using [[SVC|svcSendSyncRequest]]. If the kernel was able to dispatch the request, the server reply will be written to TLS+0x80. Often the first word of the response data is the error code (or 0 if success).

Every IPC command sent to services starts with a u32 header code, and parameters, if any, are written after this header. The can be decomposed in the following parts:

Every IPC command sent to services starts with a u32 header code, and parameters, if any, are written after this header. They are decomposed into the following parts:

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