Talk:SELF File Format

Authentication ID

Difference in auth id : PSP : ? PSP SELF doesn't have the same sort of SELF header (magic = "PSP" instead of "SCE") PS3 : 1x xx xx xx xx xx xx xx PSVita : 2x xx xx xx xx xx xx xx PS4 : 3x xx xx xx xx xx xx xx

Offset 0x80 in the SELF header. SceWebCore (NPXS10017 / NPXS10037 on 1.69, replaced later by SceWebKit) 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 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