FSPXI:ReadFileSHA256 - Revision history

TimmSkiller: Unknown value -> Alignment size

2022-06-05T17:59:01Z

Unknown value -> Alignment size

← Older revision		Revision as of 21:59, 5 June 2022
Line 24:		Line 24:
	\|-		\|-
	\| 6		\| 6
	\| ~~Unknown~~ (always 0x00001000)		\| Alignment size (always 0x00001000)
	\|-		\|-
	\| 7		\| 7

TimmSkiller: Fix incorrect value in buffer descriptor calculation

2022-06-05T17:38:52Z

Fix incorrect value in buffer descriptor calculation

← Older revision		Revision as of 21:38, 5 June 2022
Line 30:		Line 30:
	\|-		\|-
	\| 8		\| 8
	\| (size of hashtable << 8) <nowiki>\|</nowiki> 4		\| (size of hashtable << 8) <nowiki>\|</nowiki> 6
	\|-		\|-
	\| 9		\| 9

Steveice10: Steveice10 moved page FSPXI:ReadFileWrapper to FSPXI:ReadFileSHA256

2016-01-16T07:18:21Z

Steveice10 moved page FSPXI:ReadFileWrapper to FSPXI:ReadFileSHA256

← Older revision		Revision as of 10:18, 16 January 2016
(No difference)

Luigi2us at 13:36, 28 March 2015

2015-03-28T12:36:01Z

← Older revision		Revision as of 15:36, 28 March 2015
Line 9:		Line 9:
	\|-		\|-
	\| 1		\| 1
	\| File~~(/archive?)~~ handle lower word		\| File handle lower word
	\|-		\|-
	\| 2		\| 2
Line 21:		Line 21:
	\|-		\|-
	\| 5		\| 5
	\| Size of ~~second memory block~~		\| Size of read buffer
	\|-		\|-
	\| 6		\| 6
Line 27:		Line 27:
	\|-		\|-
	\| 7		\| 7
	\| Size of ~~first memory block~~		\| Size of hashtable
	\|-		\|-
	\| 8		\| 8
	\| (size of ~~first mem block~~ << 8) <nowiki>\|</nowiki> 4		\| (size of hashtable << 8) <nowiki>\|</nowiki> 4
	\|-		\|-
	\| 9		\| 9
	\| Pointer to ~~first memory block~~		\| Pointer to hashtable
	\|-		\|-
	\| 10		\| 10
	\| (size of ~~second mem block~~ << 8) <nowiki>\|</nowiki> 0x14		\| (size of read buffer << 8) <nowiki>\|</nowiki> 0x14
	\|-		\|-
	\| 11		\| 11
	\| Pointer to ~~second memory block~~		\| Pointer to read buffer
	\|}		\|}

Line 61:		Line 61:
	\|}		\|}

	The data read are stored in the ~~second memory~~ block~~. The first memory~~ block is ~~filled with hashes,~~ in ~~an unknown manner~~.		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.

	~~Reads seem to be sector-aligned (one sector = 0x1000 bytes when reading from~~ the ~~cart,~~ not ~~sure if that is true everywhere). The first memory block seems~~ to ~~be filled with one hash per sector read~~.		It is unknown how hashing behaves if the read offset/size are not aligned to a 0x1000-byte boundary.

Luigi2us at 00:16, 27 March 2015

2015-03-26T23:16:17Z

← Older revision		Revision as of 02:16, 27 March 2015
Line 62:		Line 62:

	The data read are stored in the second memory block. The first memory block is filled with hashes, in an unknown manner.		The data read are stored in the second memory block. The first memory block is filled with hashes, in an unknown manner.

			Reads seem to be sector-aligned (one sector = 0x1000 bytes when reading from the cart, not sure if that is true everywhere). The first memory block seems to be filled with one hash per sector read.

Luigi2us: /* Request */

2015-03-26T22:56:01Z

Request

← Older revision		Revision as of 01:56, 27 March 2015
Line 9:		Line 9:
	\|-		\|-
	\| 1		\| 1
	\| File handle lower word		\| File(/archive?) handle lower word
	\|-		\|-
	\| 2		\| 2

Luigi2us: Created page with "=Request= {| class="wikitable" border="1" |- ! Index Word ! Description |- | 0 | Header code [0x004D01C4] |- | 1 | File handle lower word |- | 2 | File handle upper word |- | 3..."

2015-03-26T22:52:31Z

Created page with "=Request= {| class="wikitable" border="1" |- ! Index Word ! Description |- | 0 | Header code [0x004D01C4] |- | 1 | File handle lower word |- | 2 | File handle upper word |- | 3..."

New page

=Request=
{| class="wikitable" border="1"
|-
! 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 second memory block
|-
| 6
| Unknown (always 0x00001000)
|-
| 7
| Size of first memory block
|-
| 8
| (size of first mem block << 8) <nowiki>|</nowiki> 4
|-
| 9
| Pointer to first memory block
|-
| 10
| (size of second mem block << 8) <nowiki>|</nowiki> 0x14
|-
| 11
| Pointer to second memory block
|}

=Response=
{| class="wikitable" border="1"
|-
! Index Word
! Description
|-
| 0
| Header code
|-
| 1
| Result code
|-
| 2
| Size read
|-
| 3
| 4
|}

The data read are stored in the second memory block. The first memory block is filled with hashes, in an unknown manner.