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Modified Memory API for creating Overlay blocks allow for

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byte/bit-mapped overlays.  Added ByteMappingScheme for byte-mapped
blocks.
This commit is contained in:
ghidra1
2020-04-29 15:27:35 -04:00
parent 1df6fa79da
commit 6ff98a4098
76 changed files with 2351 additions and 1618 deletions
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23
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/MemoryByteBlock.java
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@@ -19,6 +19,7 @@ import java.math.BigInteger;
import ghidra.app.plugin.core.format.ByteBlock;
import ghidra.app.plugin.core.format.ByteBlockAccessException;
import ghidra.program.database.mem.ByteMappingScheme;
import ghidra.program.model.address.*;
import ghidra.program.model.listing.*;
import ghidra.program.model.mem.*;
@@ -139,9 +140,7 @@ public class MemoryByteBlock implements ByteBlock {
@Override
public boolean hasValue(BigInteger index) {
Address addr = getAddress(index);
MemoryBlock memBlock = memory.getBlock(addr);
return (memBlock != null) && memBlock.isInitialized();
return memory.getAllInitializedAddressSet().contains(addr);
}
/**
@@ -260,6 +259,23 @@ public class MemoryByteBlock implements ByteBlock {
return (int) (start.getOffset() % radix);
}
private Address getMappedAddress(Address addr) {
MemoryBlock memBlock = memory.getBlock(addr);
if (memBlock != null && memBlock.getType() == MemoryBlockType.BYTE_MAPPED) {
try {
MemoryBlockSourceInfo info = memBlock.getSourceInfos().get(0);
AddressRange mappedRange = info.getMappedRange().get();
ByteMappingScheme byteMappingScheme = info.getByteMappingScheme().get();
addr = byteMappingScheme.getMappedSourceAddress(mappedRange.getMinAddress(),
addr.subtract(memBlock.getStart()));
}
catch (AddressOverflowException e) {
// ignore
}
}
return addr;
}
/**
* Get the address based on the index.
*/
@@ -268,7 +284,6 @@ public class MemoryByteBlock implements ByteBlock {
mAddr = start;
mAddr = mAddr.addNoWrap(index);
return mAddr;
}
catch (AddressOverflowException e) {
throw new IndexOutOfBoundsException("Index " + index + " is not in this block");