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| | 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 SCE header. |
| | | | |
| − | == Authentication ID == | + | == Authority ID == |
| − | Offset 0x80 in the SELF header. <code>SceWebCore</code> has 0x8000 set; the only system app with that flag set.
| |
| | | | |
| − | <code>sceAppMgrConvertVs0UserDrivePath</code> checks the authentication id to limit mount points.
| + | 8 Bytes long. Located at offset 0x80 in SELF header. |
| | | | |
| − | <code>0x2800000000008003</code> seen used by [[SceWebCore]] can only access <code>vs0:data/external/cert/</code> and <code>vs0:data/external/webcore/</code>
| + | [[SceAppMgr#sceAppMgrConvertVs0UserDrivePath|sceAppMgrConvertVs0UserDrivePath]] checks the AuthId to limit mount points. |
| | | | |
| − | <code>0x2800000000008004</code> seen used by games and <code>0x210000101CD20007</code> seen used by [[PSM]] can only access <code>vs0:data/external</code> and <code>vs0:sys/external</code> | + | <code>0x2800000000008000</code> only used by [[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>0x210000101CD20007</code> seen used by [[PSM]] can access <code>vs0:data/external</code> and <code>vs0:sys/external</code>. |
| | | | |
| | == Relocations == | | == Relocations == |
Revision as of 22:28, 31 March 2018
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 SCE header.
Authority ID
8 Bytes long. Located at offset 0x80 in SELF header.
sceAppMgrConvertVs0UserDrivePath checks the AuthId to limit mount points.
0x2800000000008000 only used by SceWebCore eboot.bin (NPXS10017 / NPXS10037 on 1.69-3.01, replaced later by SceWebKit).
0x2800000000008003 seen used by SceWebCore can access vs0:data/external/cert/ and vs0:data/external/webcore/.
0x210000101CD20007 seen used by PSM can access vs0:data/external and vs0:sys/external.
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
| 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
| 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
| 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
| 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
| Start |
End |
Description
|
| 0 |
3 |
Entry format type set to 4
|
| 4 |
26 |
Offset
|
| 27 |
31 |
Distance from offset
|
Format 5
| 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
| Start |
End |
Description
|
| 0 |
3 |
Entry format type set to 6
|
| 4 |
31 |
Offset
|
Format 7
| 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
| 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
| 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)
| 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
|