Difference between revisions of "FSPXI:ReadFileSHA256"
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Steveice10 (talk | contribs) m (Steveice10 moved page FSPXI:ReadFileWrapper to FSPXI:ReadFileSHA256) |
TimmSkiller (talk | contribs) (Fix incorrect value in buffer descriptor calculation) |
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| − | | (size of hashtable << 8) <nowiki>|</nowiki> | + | | (size of hashtable << 8) <nowiki>|</nowiki> 6 |
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| 9 | | 9 | ||
Revision as of 20:38, 5 June 2022
Request
| Index Word | Description |
|---|---|
| 0 | Header code [0x004D01C4] |
| 1 | File handle lower word |
| 2 | File handle upper word |
| 3 | Offset lower word |
| 4 | Offset upper word |
| 5 | Size of read buffer |
| 6 | Unknown (always 0x00001000) |
| 7 | Size of hashtable |
| 8 | (size of hashtable << 8) | 6 |
| 9 | Pointer to hashtable |
| 10 | (size of read buffer << 8) | 0x14 |
| 11 | Pointer to read buffer |
Response
| Index Word | Description |
|---|---|
| 0 | Header code |
| 1 | Result code |
| 2 | Size read |
| 3 | 4 |
The data read are stored in the read buffer. For each 0x1000-byte block read, a SHA256 hash of the block is stored in the hashtable.
It is unknown how hashing behaves if the read offset/size are not aligned to a 0x1000-byte boundary.