CRO0: Difference between revisions
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| Line 80: | Line 80: | ||
| 0xD0 | | 0xD0 | ||
| 0x04 | | 0x04 | ||
| Export Table | | Named Export Table offset | ||
|- | |- | ||
| 0xD4 | | 0xD4 | ||
| 0x04 | | 0x04 | ||
| Export Table | | Named Export Table num (size = num * 8) | ||
|- | |- | ||
| 0xD8 | | 0xD8 | ||
| 0x04 | | 0x04 | ||
| Export Table | | Indexed Export Table offset | ||
|- | |- | ||
| 0xDC | | 0xDC | ||
| 0x04 | | 0x04 | ||
| Export Table | | Indexed Export Table num (size = num * 4) | ||
|- | |- | ||
| 0xE0 | | 0xE0 | ||
| Line 104: | Line 104: | ||
| 0xE8 | | 0xE8 | ||
| 0x04 | | 0x04 | ||
| Export Tree offset (fast lookups based on | | Export Tree offset (fast lookups based on a trie-like structure) | ||
|- | |- | ||
| 0xEC | | 0xEC | ||
| Line 128: | Line 128: | ||
| 0x100 | | 0x100 | ||
| 0x04 | | 0x04 | ||
| Import Table | | Named Import Table offset | ||
|- | |- | ||
| 0x104 | | 0x104 | ||
| 0x04 | | 0x04 | ||
| Import Table | | Named Import Table num (size = num * 8) | ||
|- | |- | ||
| 0x108 | | 0x108 | ||
| 0x04 | | 0x04 | ||
| Import Table | | Indexed Import Table offset | ||
|- | |- | ||
| 0x10C | | 0x10C | ||
| 0x04 | | 0x04 | ||
| Import Table | | Indexed Import Table num (size = num * 8) | ||
|- | |- | ||
| 0x110 | | 0x110 | ||
| 0x04 | | 0x04 | ||
| Import Table | | Anonymous Import Table offset | ||
|- | |- | ||
| 0x114 | | 0x114 | ||
| 0x04 | | 0x04 | ||
| Import Table | | Anonymous Import Table num (size = num * 8) | ||
|- | |- | ||
| 0x118 | | 0x118 | ||
| Line 212: | Line 212: | ||
| 0x8 | | 0x8 | ||
| 0x4 | | 0x4 | ||
| Segment id (0, 1, 2..) | | Segment id (0 = .text, 1 = .rodata, 2 = .data, 3 = .bss) | ||
|} | |} | ||
Export Table entry (8 bytes) | Named Export Table entry (8 bytes) | ||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! Offset | ! Offset | ||
| Line 230: | Line 230: | ||
|} | |} | ||
Import Table entry (8 bytes) | Named Import Table entry (8 bytes) | ||
{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
! Offset | ! Offset | ||
| Line 265: | Line 265: | ||
| 0x6 | | 0x6 | ||
| 0x1 | | 0x1 | ||
| 1 is written to | | 1 is written to first entry if all symbols loaded successfully. | ||
|- | |- | ||
| 0x7 | | 0x7 | ||
| Line 288: | Line 288: | ||
The first hash-table entry hashes the 0x100-byte header following the hash-table. The following hash-table entries hash the sections specified in the header. | The first hash-table entry hashes the 0x100-byte header following the hash-table. The following hash-table entries hash the sections specified in the header. | ||
When the RO module loads the entire CRO into process memory(mapped in the 0x00100000-0x04000000 region), it modifies the mapped CRO data. The magic field is also changed to "FIXD". | When the RO module loads the entire CRO into process memory(mapped in the 0x00100000-0x04000000 region), it modifies the mapped CRO data. The magic field is also changed to "FIXD" if fix level is not 0. | ||
Upon loading, the RO module will look for symbol "__aeabi_atexit" or "nnroAeabiAtexit_". | Upon loading, the RO module will look for symbol "__aeabi_atexit" or "nnroAeabiAtexit_". | ||
For dumping symbols and loading a CRO into IDA, see [https://github.com/plutooo/ctr/]. | For dumping symbols and loading a CRO into IDA, see [https://github.com/plutooo/ctr/]. | ||