HIPC: Difference between revisions - Nintendo Switch Brew

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Sysmodules load the last u64 of rawdata when handling the PID. This is not written by kernel. For sysmodule handling:

* In some cases: ~~The rawdata_u64~~ is ~~written~~ to ~~stack as~~ the ~~initial PID, but this~~ is ~~never~~ used ~~since the get-pid function always overwrites the output PID when it returns retval 0~~.

* In some cases: these commands require a placeholder u64 value passed in the input parameters, as mentioned above. In these cases the OverwriteClientProcessId method is called to replace the value before it is used.

* In other cases: The rawdata_u64 is compared with the PID from the descriptor. On mismatch and when rawdata_u64!=0, error 0x60A is returned. The PID value passed to the cmdhandler vtable funcptr is the rawdata_u64.

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| 4... || Input parameters or return values

|}

Many messages which require the PID also require a placeholder u64 value passed in the input parameters. In these cases the OverwriteClientProcessId method is called to replace the value before it is used.

== Official marshalling code ==

@@ Line 56: / Line 56: @@
 Sysmodules load the last u64 of rawdata when handling the PID. This is not written by kernel. For sysmodule handling:
-* In some cases: The rawdata_u64 is written to stack as the initial PID, but this is never used since the get-pid function always overwrites the output PID when it returns retval 0.
+* In some cases: these commands require a placeholder u64 value passed in the input parameters, as mentioned above. In these cases the OverwriteClientProcessId method is called to replace the value before it is used.
 * In other cases: The rawdata_u64 is compared with the PID from the descriptor. On mismatch and when rawdata_u64!=0, error 0x60A is returned. The PID value passed to the cmdhandler vtable funcptr is the rawdata_u64.
@@ Line 173: / Line 173: @@
 | 4... || Input parameters or return values
 |}
-Many messages which require the PID also require a placeholder u64 value passed in the input parameters. In these cases the OverwriteClientProcessId method is called to replace the value before it is used.
 == Official marshalling code ==