mirror/ghidra
1
0
Fork 0
mirror of https://github.com/NationalSecurityAgency/ghidra.git synced 2026-09-28 17:11:11 -09:00
Code Issues Packages Projects Releases Wiki Activity

GP-3013 Refactor of Relocation API (created V6 DB adapter) to include

Browse Source 
status and stored length when original FileBytes are used.
This commit is contained in:
ghidra1
2023-01-17 15:04:22 -05:00
parent f022b9a4d5
commit 5b433f35ca
63 changed files with 2146 additions and 1147 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
Ghidra/Processors/PIC/src/main/java/ghidra/app/util/bin/format/elf/relocation/PIC30_ElfRelocationHandler.java
View File

@@ -23,6 +23,8 @@ import ghidra.program.model.lang.Register;
import ghidra.program.model.listing.Program;
import ghidra.program.model.mem.Memory;
import ghidra.program.model.mem.MemoryAccessException;
import ghidra.program.model.reloc.RelocationResult;
import ghidra.program.model.reloc.Relocation.Status;
import ghidra.util.exception.NotFoundException;
public class PIC30_ElfRelocationHandler extends ElfRelocationHandler {
@@ -122,12 +124,13 @@ public class PIC30_ElfRelocationHandler extends ElfRelocationHandler {
}
@Override
public void relocate(ElfRelocationContext elfRelocationContext, ElfRelocation relocation, Address relocationAddress)
public RelocationResult relocate(ElfRelocationContext elfRelocationContext,
ElfRelocation relocation, Address relocationAddress)
throws MemoryAccessException, NotFoundException {
int type = relocation.getType();
if (type == R_PIC30_NONE) {
return;
return RelocationResult.SKIPPED;
}
Program program = elfRelocationContext.getProgram();
@@ -146,6 +149,8 @@ public class PIC30_ElfRelocationHandler extends ElfRelocationHandler {
short oldShortValue = memory.getShort(relocationAddress);
int newValue;
int byteLength = 2; // most relocations affect 2-bytes (change if different)
ElfHeader elf = elfRelocationContext.getElfHeader();
if (elf.e_machine() == ElfConstants.EM_DSPIC30F) {
@@ -158,6 +163,7 @@ public class PIC30_ElfRelocationHandler extends ElfRelocationHandler {
case R_PIC30_32: // 3
newValue = symbolValue + addend + oldValue;
memory.setInt(relocationAddress, newValue);
byteLength = 4;
break;
case R_PIC30_FILE_REG_BYTE: // 4 short
case R_PIC30_FILE_REG: // 5 short
@@ -175,6 +181,7 @@ public class PIC30_ElfRelocationHandler extends ElfRelocationHandler {
reloc &= 0x7fff;
newValue = (reloc << 4) | (oldValue & ~0x7fff0);
memory.setInt(relocationAddress, newValue);
byteLength = 4;
break;
case R_PIC30_WORD: // 8
case R_PIC30_WORD_TBLOFFSET: // 0x15
@@ -184,6 +191,7 @@ public class PIC30_ElfRelocationHandler extends ElfRelocationHandler {
reloc &= 0xffff;
newValue = (reloc << 4) | (oldValue & ~0x0ffff0);
memory.setInt(relocationAddress, newValue);
byteLength = 4;
break;
case R_PIC30_WORD_TBLPAGE: // 0x18
reloc = symbolValue >> 16;
@@ -195,6 +203,7 @@ public class PIC30_ElfRelocationHandler extends ElfRelocationHandler {
}
newValue = (reloc << 4) | (oldValue & ~0x0ffff0);
memory.setInt(relocationAddress, newValue);
byteLength = 4;
break;
case R_PIC30_PCREL_BRANCH: // 0x1c
newValue = (int) (symbolValue - relocWordOffset + oldShortValue - 2);
@@ -205,9 +214,10 @@ public class PIC30_ElfRelocationHandler extends ElfRelocationHandler {
String symbolName = elfRelocationContext.getSymbolName(symbolIndex);
markAsUnhandled(program, relocationAddress, type, symbolIndex, symbolName,
elfRelocationContext.getLog());
break;
return RelocationResult.UNSUPPORTED;
}
}
return new RelocationResult(Status.APPLIED, byteLength);
}
}