SELF: Difference between revisions

From Vita Development Wiki
Jump to navigation Jump to search
No edit summary
 
(11 intermediate revisions by 2 users not shown)
Line 1: Line 1:
SELF files are a wrapper around encrypted [http://en.wikipedia.org/wiki/ELF ELF] files. The encrypted header contains keys to decrypt each encrypted ELF program, which are decrypted and loaded individually. Because of this, a copy of the ELF headers and ELF program headers are stored in plain text next to the SCE header.
SELF files are a wrapper around encrypted [http://en.wikipedia.org/wiki/ELF ELF] files. The encrypted header contains keys to decrypt each encrypted ELF program, which are decrypted and loaded individually. Because of this, a copy of the ELF headers and ELF program headers are stored in plain text next to the [[Certified File]] header.


== Authority ID ==
== Authority Id ==


8 Bytes long. Located at offset 0x80 in SELF header.
8 bytes long. Located at offset 0x80 in PSVita SELF header.


[[SceAppMgr#sceAppMgrConvertVs0UserDrivePath|sceAppMgrConvertVs0UserDrivePath]] checks the AuthId to limit mount points.
[[SceAppMgr#sceAppMgrConvertVs0UserDrivePath|sceAppMgrConvertVs0UserDrivePath]] checks the Authority Id to limit mount points.


<code>0x2800000000008000</code> only used by [[SceWebCore]] eboot.bin (NPXS10017 / NPXS10037 on 1.69-3.01, replaced later by SceWebKit).
<code>0x2800000000008000</code> ([[SceWebCore]] eboot.bin - NPXS10017 / NPXS10037 on 1.69-3.01, replaced later by [[SceWebKit]]).


<code>0x2800000000008003</code> seen used by [[SceWebCore]] can access <code>vs0:data/external/cert/</code> and <code>vs0:data/external/webcore/</code>.
<code>0x2800000000008003</code> ([[SceWebCore]]) can access <code>vs0:data/external/cert/</code> and <code>vs0:data/external/webcore/</code>.


<code>0x210000101CD20007</code> seen used by [[PSM]] can access <code>vs0:data/external</code> and <code>vs0:sys/external</code>.
<code>0x210000101CD20007</code> ([[PSM|PSM Dev Assistant]] can access <code>vs0:data/external</code> and <code>vs0:sys/external</code>.


== Relocations ==
Relocations are stored within the PT_SCE_RELA segment.
Relocation entry format can be one of 10 types which is determined by the first 4 bits.
=== Format 0 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 0
|-
| 4 || 7 || Symbol segment index
|-
| 8 || 15 || Relocation type
|-
| 16 || 19 || Patch segment index
|-
| 20 || 27 || Second relocation type
|-
| 28 || 31 || Distance from offset (used for second relocation)
|-
| 32 || 63 || Addend
|-
| 64 || 95 || Offset
|-
|}
=== Format 1 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 1
|-
| 4 || 7 || Symbol segment index
|-
| 8 || 15 || Relocation type
|-
| 16 || 19 || Patch segment index
|-
| 20 || 41 || Offset
|-
| 42 || 63 || Addend
|-
|}
=== Format 2 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 2
|-
| 4 || 7 || Symbol segment index
|-
| 8 || 15 || Relocation type
|-
| 16 || 31 || Offset
|-
| 32 || 64 || Addend
|}
=== Format 3 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 3
|-
| 4 || 7 || Symbol segment index
|-
| 8 || 8 || Mode (ARM = 0, THUMB = 1)
|-
| 9 || 26 || Offset
|-
| 27 || 31 || Distance from offset
|-
| 32 || 64 || Addend
|-
|}
=== Format 4 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 4
|-
| 4 || 26 || Offset
|-
| 27 || 31 || Distance from offset
|-
|}
=== Format 5 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 5
|-
| 4 || 12 || Distance 1
|-
| 13 || 17 || Distance 2
|-
| 18 || 26 || Distance 3
|-
| 27 || 31 || Distance 4
|-
|}
=== Format 6 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 6
|-
| 4 || 31 || Offset
|-
|}
=== Format 7 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 7
|-
| 4 || 10 || Offset 1
|-
| 11 || 17 || Offset 2
|-
| 18 || 24 || Offset 3
|-
| 25 || 31 || Offset 4
|-
|}
=== Format 8 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 8
|-
| 4 || 7 || Offset 1
|-
| 8 || 11 || Offset 2
|-
| 12 || 15 || Offset 3
|-
| 16 || 19 || Offset 4
|-
| 20 || 23 || Offset 5
|-
| 24 || 27 || Offset 6
|-
| 28 || 31 || Offset 7
|-
|}
=== Format 9 ===
{| class="wikitable"
|-
! Start !! End !! Description
|-
| 0 || 3 || Entry format type set to 9
|-
| 4 || 5 || Offset 1
|-
| 6 || 7 || Offset 2
|-
| 8 || 9 || Offset 3
|-
| 10 || 11 || Offset 4
|-
| 12 || 13 || Offset 5
|-
| 14 || 15 || Offset 6
|-
| 16 || 17 || Offset 7
|-
| 18 || 19 || Offset 8
|-
| 20 || 21 || Offset 9
|-
| 22 || 23 || Offset 10
|-
| 24 || 25 || Offset 11
|-
| 26 || 27 || Offset 12
|-
| 28 || 29 || Offset 13
|-
| 30 || 31 || Offset 14
|-
|}
=== Supported Relocation Codes (3.60) ===
{| class="wikitable"
|-
! Code !! Description
|-
| 0 ||  R_ARM_NONE
|-
| 2 ||  R_ARM_ABS32
|-
| 3 ||  R_ARM_REL32
|-
| 10||  R_ARM_THM_CALL
|-
| 28||  R_ARM_CALL
|-
| 29||  R_ARM_JUMP24
|-
| 38||  R_ARM_TARGET1 (same as R_ARM_ABS32)
|-
| 40||  R_ARM_V4BX (same as R_ARM_NONE)
|-
| 41||  R_ARM_TARGET2 (same as R_ARM_REL32)
|-
| 42||  R_ARM_PREL31
|-
| 43||  R_ARM_MOVW_ABS_NC
|-
| 44||  R_ARM_MOVT_ABS
|-
| 47||  R_ARM_THM_MOVW_ABS_NC
|-
| 48||  R_ARM_THM_MOVT_ABS
|-
|}


[[Category:Formats]]
[[Category:Formats]]

Latest revision as of 19:57, 26 September 2019

SELF files are a wrapper around encrypted ELF files. The encrypted header contains keys to decrypt each encrypted ELF program, which are decrypted and loaded individually. Because of this, a copy of the ELF headers and ELF program headers are stored in plain text next to the Certified File header.

Authority Id

8 bytes long. Located at offset 0x80 in PSVita SELF header.

sceAppMgrConvertVs0UserDrivePath checks the Authority Id to limit mount points.

0x2800000000008000 (SceWebCore eboot.bin - NPXS10017 / NPXS10037 on 1.69-3.01, replaced later by SceWebKit).

0x2800000000008003 (SceWebCore) can access vs0:data/external/cert/ and vs0:data/external/webcore/.

0x210000101CD20007 (PSM Dev Assistant can access vs0:data/external and vs0:sys/external.

Retrieved from "http://wiki.henkaku.xyz/index.php?title=SELF&oldid=11606"