SELF
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
Offset | Size | Description |
---|---|---|
0x0 | 0x4 | Relocation Type |
0x4 | 0x4 | Long entry: Addend |
0x4 | 0x4 | Short entry: 0-19 = Bits 10-29 of offset, 20-31 = addend |
0x8 | 0x4 | Long entry: Offset |
Relocations can be of two types: 8 byte "short" entries or 12 byte "long" entries. The relocation code is the same as ARM ELF format.
Segment start = Buffer address of segment indexed at "Patch segment"
Symbol start = Buffer address of segment indexed at "Symbol segment"
Address to patch = segment start + offset
P = address to patch
S = "Symbol segment" == 15 ? 0 : symbol start
A = addend
Relocation Type
Start | End | Description |
---|---|---|
0 | 3 | Short entry if set |
4 | 7 | Symbol segment |
8 | 15 | Relocation code |
16 | 19 | Patch segment |
20 | 27 | Long entry: Optional relocation code 2 |
28 | 31 | Long entry: Optional distance 2 |
20 | 31 | Short entry: Lower 12 bits of offset |
Supported Relocation Codes (1.69)
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 |