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GP-0: Formatting/Certify. Also removing untested code.

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This commit is contained in:
Ryan Kurtz
2023-11-20 14:24:10 -05:00
parent d543ca8e3d
commit c3b4f5eda0
1 changed files with 121 additions and 149 deletions
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Ghidra/Processors/PowerPC/src/main/java/ghidra/app/util/bin/format/coff/relocation/PowerPC_CoffRelocationHandler.java
+9 -37
View File
@@ -16,17 +16,10 @@
package ghidra.app.util.bin.format.coff.relocation; package ghidra.app.util.bin.format.coff.relocation;
import ghidra.app.util.bin.format.RelocationException; import ghidra.app.util.bin.format.RelocationException;
import ghidra.app.util.bin.format.coff.CoffFileHeader; import ghidra.app.util.bin.format.coff.*;
import ghidra.app.util.bin.format.coff.CoffMachineType;
import ghidra.app.util.bin.format.coff.CoffRelocation;
import ghidra.program.model.address.Address; import ghidra.program.model.address.Address;
import ghidra.program.model.listing.Program;
import ghidra.program.model.mem.Memory;
import ghidra.program.model.mem.MemoryAccessException; import ghidra.program.model.mem.MemoryAccessException;
import ghidra.program.model.reloc.Relocation;
import ghidra.program.model.reloc.RelocationResult; import ghidra.program.model.reloc.RelocationResult;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
public class PowerPC_CoffRelocationHandler implements CoffRelocationHandler { public class PowerPC_CoffRelocationHandler implements CoffRelocationHandler {
@@ -40,31 +33,8 @@ public class PowerPC_CoffRelocationHandler implements CoffRelocationHandler {
CoffRelocationContext relocationContext) CoffRelocationContext relocationContext)
throws MemoryAccessException, RelocationException { throws MemoryAccessException, RelocationException {
Program program = relocationContext.getProgram();
Memory mem = program.getMemory();
int addend = mem.getInt(address);
int byteLength = 4; // most relocations affect 4-bytes (change if different)
switch (relocation.getType()) { switch (relocation.getType()) {
// We are implementing these types:
case IMAGE_REL_PPC_ADDR32: {
int value = (int) relocationContext.getSymbolAddress(relocation)
.add(addend)
.getOffset();
program.getMemory().setInt(address, value);
break;
}
case IMAGE_REL_PPC_ADDR32NB: {
int value = (int) relocationContext.getSymbolAddress(relocation)
.add(addend)
.subtract(program.getImageBase());
mem.setInt(address, value);
break;
}
// We are choosing to ignore these types: // We are choosing to ignore these types:
case IMAGE_REL_PPC_ABSOLUTE: case IMAGE_REL_PPC_ABSOLUTE:
case IMAGE_REL_PPC_SECTION: case IMAGE_REL_PPC_SECTION:
@@ -74,6 +44,8 @@ public class PowerPC_CoffRelocationHandler implements CoffRelocationHandler {
} }
// We haven't implemented these types yet: // We haven't implemented these types yet:
case IMAGE_REL_PPC_ADDR32:
case IMAGE_REL_PPC_ADDR32NB:
case IMAGE_REL_PPC_ADDR64: case IMAGE_REL_PPC_ADDR64:
case IMAGE_REL_PPC_ADDR24: case IMAGE_REL_PPC_ADDR24:
case IMAGE_REL_PPC_ADDR16: case IMAGE_REL_PPC_ADDR16:
@@ -90,7 +62,6 @@ public class PowerPC_CoffRelocationHandler implements CoffRelocationHandler {
return RelocationResult.UNSUPPORTED; return RelocationResult.UNSUPPORTED;
} }
} }
return new RelocationResult(Relocation.Status.APPLIED, byteLength);
} }
/** /**
@@ -110,7 +81,8 @@ public class PowerPC_CoffRelocationHandler implements CoffRelocationHandler {
/** /**
* The low 24 bits of the VA of the target. * The low 24 bits of the VA of the target.
* This is valid only when the target symbol is absolute and can be sign-extended to its original value. * This is valid only when the target symbol is absolute and can be sign-extended to its
* original value.
*/ */
public final static short IMAGE_REL_PPC_ADDR24 = 0x0003; public final static short IMAGE_REL_PPC_ADDR24 = 0x0003;
@@ -159,10 +131,10 @@ public class PowerPC_CoffRelocationHandler implements CoffRelocationHandler {
public final static short IMAGE_REL_PPC_SECREL16 = 0x000F; public final static short IMAGE_REL_PPC_SECREL16 = 0x000F;
/** /**
* The high 16 bits of the target's 32-bit VA. * The high 16 bits of the target's 32-bit VA. This is used for the first instruction in a
* This is used for the first instruction in a two-instruction sequence that loads a full address. * two-instruction sequence that loads a full address. This relocation must be immediately
* This relocation must be immediately followed by a PAIR relocation whose SymbolTableIndex contains a signed * followed by a PAIR relocation whose SymbolTableIndex contains a signed 16-bit displacement
* 16-bit displacement that is added to the upper 16 bits that was taken from the location that is being relocated. * that is added to the upper 16 bits that was taken from the location that is being relocated.
*/ */
public final static short IMAGE_REL_PPC_REFHI = 0x0010; public final static short IMAGE_REL_PPC_REFHI = 0x0010;