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.
Authentication ID
Offset 0x80 in the SELF header. SceWebCore has 0x8000 set; the only system app with that flag set.
sceAppMgrConvertVs0UserDrivePath checks the authentication id to limit mount points.
0x2800000000008003 seen used by SceWebCore can only access vs0:data/external/cert/ and vs0:data/external/webcore/
0x2800000000008004 seen used by games and 0x210000101CD20007 seen used by PSM can only 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
|