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all mzloader header shorts are now treated as uint

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reverting bad code

reverting bad code v2

reverting bad code v3
This commit is contained in:
oh2erk 2024-04-14 21:51:05 +03:00 committed by Ryan Kurtz
parent 586fc9efcd
commit a6cca75b9e
1 changed files with 5 additions and 5 deletions
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10
Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/MzLoader.java
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@ -139,7 +139,7 @@ public class MzLoader extends AbstractLibrarySupportLoader {
MessageLog log, TaskMonitor monitor) {
monitor.setMessage("Marking up headers...");
OldDOSHeader header = mz.getHeader();
int blockSize = paragraphsToBytes(header.e_cparhdr());
int blockSize = paragraphsToBytes(Short.toUnsignedInt(header.e_cparhdr()));
try {
Address headerSpaceAddr = AddressSpace.OTHER_SPACE.getAddress(0);
MemoryBlock headerBlock = MemoryBlockUtils.createInitializedBlock(program, true,
@ -156,7 +156,7 @@ public class MzLoader extends AbstractLibrarySupportLoader {
if (!relocations.isEmpty()) {
DataType relocationType = relocations.get(0).toDataType();
int len = relocationType.getLength();
addr = addr.add(header.e_lfarlc());
addr = addr.add(Short.toUnsignedInt(header.e_lfarlc()));
for (int i = 0; i < relocations.size(); i++) {
monitor.checkCancelled();
DataUtilities.createData(program, addr.add(i * len), relocationType, -1,
@ -187,7 +187,7 @@ public class MzLoader extends AbstractLibrarySupportLoader {
knownSegments.add(space.getAddress((INITIAL_SEGMENT_VAL + header.e_cs()) & 0xffff, 0));
}
// Allocate an initialized memory block for each segment we know about
int endOffset = pagesToBytes(header.e_cp() - 1) + header.e_cblp();
int endOffset = pagesToBytes(Short.toUnsignedInt(header.e_cp()) - 1) + Short.toUnsignedInt(header.e_cblp());
if (endOffset > reader.length()) {
log.appendMsg(
"File is 0x%x bytes but header reports 0x%x".formatted(reader.length(), endOffset));
@ -253,7 +253,7 @@ public class MzLoader extends AbstractLibrarySupportLoader {
// Allocate an uninitialized memory block for extra minimum required data space
if (lastBlock != null) {
int extraAllocSize = paragraphsToBytes(header.e_minalloc());
int extraAllocSize = paragraphsToBytes(Short.toUnsignedInt(header.e_minalloc()));
if (extraAllocSize > 0) {
MemoryBlockUtils.createUninitializedBlock(program, false, "DATA",
lastBlock.getEnd().add(1), extraAllocSize, "", "mz", true, true, false, log);
@ -475,7 +475,7 @@ public class MzLoader extends AbstractLibrarySupportLoader {
* @return The segmented addresses converted to a file offset
*/
private int addressToFileOffset(int segment, int offset, OldDOSHeader header) {
return (short) segment * 16 + offset + paragraphsToBytes(header.e_cparhdr());
return (short) segment * 16 + offset + paragraphsToBytes(Short.toUnsignedInt(header.e_cparhdr()));
}
/**