HIPC: Difference between revisions
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| 1 || 13-10 || If set to 2, enable buf C descriptor. | | 1 || 13-10 || If set to 2, enable buf C descriptor. | ||
|- | |- | ||
| 1 || 31 || Enable | | 1 || 31 || Enable handle descriptor. | ||
|- | |- | ||
| ... || || | | ... || || Handle descriptor, if enabled. | ||
|- | |- | ||
| ... || || Buf X descriptors, each one 2 words. | | ... || || Buf X descriptors, each one 2 words. | ||
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|} | |} | ||
=== | === Handle descriptor === | ||
There can only be one of this descriptor type. It is enabled by bit31 of the second word. | There can only be one of this descriptor type. It is enabled by bit31 of the second word. | ||
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| 0 || 0 || ? | | 0 || 0 || ? | ||
|- | |- | ||
| 0 || 4-1 || Number of | | 0 || 4-1 || Number of handles. | ||
|- | |- | ||
| 0 || 8-5 || Number of B-words for this special descriptor. | | 0 || 8-5 || Number of B-words for this special descriptor. | ||
|- | |- | ||
| ... || || | | ... || || Handles | ||
|- | |- | ||
| ... || || B-words, purpose unknown. | | ... || || B-words, purpose unknown. | ||
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== Official marshalling code == | == Official marshalling code == | ||
The official marshalling function takes an array of (buf_ptr, size) pairs and a type-field for each such pair. | The official marshalling function takes an array of (buf_ptr, size) pairs and a type-field for each such pair. | ||
Bitmask 0x10 seems to indicate null-terminated strings, but that flag is ignored by the marshalling code. | |||
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