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Set a custom address for import symbols.

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This commit is contained in:
Maschell 2019-03-10 01:42:43 +01:00
parent 3085d0b374
commit 30dd840300
1 changed files with 16 additions and 12 deletions
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28
src/main/java/de/mas/ghidra/wiiu/RPXUtils.java
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@ -37,6 +37,8 @@ public class RPXUtils {
long shdr_elf_offset = elfFile.e_ehsize() & 0xFFFFFFFF; long shdr_elf_offset = elfFile.e_ehsize() & 0xFFFFFFFF;
long shdr_data_elf_offset = shdr_elf_offset + elfFile.e_shnum() * elfFile.e_shentsize(); long shdr_data_elf_offset = shdr_elf_offset + elfFile.e_shnum() * elfFile.e_shentsize();
long curSymbolAddress = 0x01000000;
for (ElfSectionHeader h : elfFile.getSections()) { for (ElfSectionHeader h : elfFile.getSections()) {
monitor.checkCanceled(); monitor.checkCanceled();
long curSize = h.getSize(); long curSize = h.getSize();
@ -82,21 +84,23 @@ public class RPXUtils {
} }
} }
// Hacky way to fix import relocations if (h.getType() == ElfSectionHeaderConstants.SHT_SYMTAB
if (h.getType() == ElfSectionHeaderConstants.SHT_SYMTAB) { || h.getType() == ElfSectionHeaderConstants.SHT_DYNSYM) {
monitor.setMessage("Fix import relocations " + h.getTypeAsString()); monitor.setMessage("Fix import/exports" + h.getTypeAsString());
int symbolCount = (int) ((int) (curSize) / h.getEntrySize()); int symbolCount = (int) ((int) (curSize) / h.getEntrySize());
long entryPos = 0; long entryPos = 0;
for (int i = 0; i < symbolCount; i++) { for (int i = 0; i < symbolCount; i++) {
monitor.checkCanceled(); monitor.checkCanceled();
long test_offset = (int) (offset + entryPos + 4); long entry_offset = (int) (offset + entryPos);
buffer.position((int) test_offset);
int val = buffer.getInt();
if ((val & 0xF0000000L) == 0xC0000000L) { int sectionIndex = buffer.getShort((int) entry_offset + 14) & 0xFFFF;
long fixedAddress = val - 0xC0000000L + 0x01000000L; int type = elfFile.getSections()[sectionIndex].getType();
buffer.position((int) test_offset);
buffer.putInt((int) fixedAddress); if (type == SHT_RPL_IMPORTS) {
// Set Value to 0
buffer.position((int) (entry_offset + 4));
curSymbolAddress += 4;
buffer.putInt((int) curSymbolAddress);
} }
entryPos += h.getEntrySize(); entryPos += h.getEntrySize();
} }
@ -118,8 +122,8 @@ public class RPXUtils {
buffer.putInt((int) flags); buffer.putInt((int) flags);
// Hacky way to fix import relocations // Hacky way to fix import relocations
if ((h.getAddress() & 0xF0000000L) == 0xC0000000L) { if (h.getType() == SHT_RPL_IMPORTS) {
long fixedAddress = h.getAddress() - 0xC0000000L + 0x01000000L; long fixedAddress = 0;
buffer.putInt((int) fixedAddress); buffer.putInt((int) fixedAddress);
} else { } else {
buffer.putInt((int) h.getAddress()); buffer.putInt((int) h.getAddress());