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Setting special sections to SHT_NULL

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This commit is contained in:
Maschell 2019-03-08 18:05:30 +01:00
parent d9cbfe31da
commit 389b710a73
1 changed files with 11 additions and 22 deletions
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33
src/main/java/rpx/RPXFileSystem.java
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@ -113,19 +113,10 @@ public class RPXFileSystem implements GFileSystem {
ByteBuffer buffer = ByteBuffer.allocate(0); ByteBuffer buffer = ByteBuffer.allocate(0);
int section_count = 0;
for (ElfSectionHeader h : elfFile.getSections()) {
if (h.getType() == SHT_RPL_CRCS || h.getType() == SHT_RPL_FILEINFO) {
continue;
}
section_count++;
}
long shdr_elf_offset = elfFile.e_ehsize() & 0xFFFFFFFF; long shdr_elf_offset = elfFile.e_ehsize() & 0xFFFFFFFF;
long shdr_data_elf_offset = shdr_elf_offset + section_count * elfFile.e_shentsize(); long shdr_data_elf_offset = shdr_elf_offset + elfFile.e_shnum() * elfFile.e_shentsize();
for (ElfSectionHeader h : elfFile.getSections()) { for (ElfSectionHeader h : elfFile.getSections()) {
monitor.checkCanceled(); monitor.checkCanceled();
long curSize = h.getSize(); long curSize = h.getSize();
long flags = h.getFlags(); long flags = h.getFlags();
@ -153,16 +144,8 @@ public class RPXFileSystem implements GFileSystem {
} }
long newEnd = shdr_data_elf_offset + curSize; long newEnd = shdr_data_elf_offset + curSize;
if (h.getType() == SHT_RPL_CRCS || h.getType() == SHT_RPL_FILEINFO) {
System.out.println("Skip special section " + h.getTypeAsString());
continue;
}
System.out.println("Saving " + h.getTypeAsString());
buffer = checkBuffer(buffer, newEnd); buffer = checkBuffer(buffer, newEnd);
buffer.position((int) shdr_data_elf_offset); buffer.position((int) shdr_data_elf_offset);
System.out.println("Write data " + String.format("%08X", shdr_data_elf_offset));
buffer.put(data); buffer.put(data);
offset = shdr_data_elf_offset; offset = shdr_data_elf_offset;
shdr_data_elf_offset += curSize; shdr_data_elf_offset += curSize;
@ -179,7 +162,7 @@ public class RPXFileSystem implements GFileSystem {
long test_offset = (int) (offset + entryPos + 4); long test_offset = (int) (offset + entryPos + 4);
buffer.position((int) test_offset); buffer.position((int) test_offset);
int val = buffer.getInt(); int val = buffer.getInt();
if ((val & 0xF0000000L) == 0xC0000000L) { if ((val & 0xF0000000L) == 0xC0000000L) {
long fixedAddress = val - 0xC0000000L + 0x01000000L; long fixedAddress = val - 0xC0000000L + 0x01000000L;
buffer.position((int) test_offset); buffer.position((int) test_offset);
@ -192,10 +175,16 @@ public class RPXFileSystem implements GFileSystem {
buffer = checkBuffer(buffer, shdr_elf_offset + 0x28); buffer = checkBuffer(buffer, shdr_elf_offset + 0x28);
monitor.setMessage("Converting section " + h.getTypeAsString()); monitor.setMessage("Converting section " + h.getTypeAsString());
buffer.position((int) shdr_elf_offset); buffer.position((int) shdr_elf_offset);
System.out.println("Write header " + String.format("%08X", shdr_elf_offset)); System.out.println("Write header " + String.format("%08X", shdr_elf_offset));
buffer.putInt(h.getName()); buffer.putInt(h.getName());
buffer.putInt(h.getType()); if (h.getType() == SHT_RPL_CRCS || h.getType() == SHT_RPL_FILEINFO || h.getType() == SHT_RPL_EXPORTS
|| h.getType() == SHT_RPL_IMPORTS) {
buffer.putInt(ElfSectionHeaderConstants.SHT_NULL);
} else {
buffer.putInt(h.getType());
}
buffer.putInt((int) flags); buffer.putInt((int) flags);
// Hacky way to fix import relocations // Hacky way to fix import relocations
@ -205,7 +194,7 @@ public class RPXFileSystem implements GFileSystem {
} else { } else {
buffer.putInt((int) h.getAddress()); buffer.putInt((int) h.getAddress());
} }
buffer.putInt((int) offset); buffer.putInt((int) offset);
buffer.putInt((int) curSize); buffer.putInt((int) curSize);
buffer.putInt(h.getLink()); buffer.putInt(h.getLink());
@ -214,10 +203,10 @@ public class RPXFileSystem implements GFileSystem {
buffer.putInt((int) h.getEntrySize()); buffer.putInt((int) h.getEntrySize());
shdr_elf_offset += 0x28; shdr_elf_offset += 0x28;
} }
monitor.setMessage("Create new ELF header"); monitor.setMessage("Create new ELF header");
buffer.position(0); buffer.position(0);
buffer.put(RPX_MAGIC); buffer.put(RPX_MAGIC);
buffer.position(0x10); buffer.position(0x10);