mirror of
https://github.com/NationalSecurityAgency/ghidra.git
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Opaque strings and variable length data-types
This commit is contained in:
caheckman
parent
2c547ac41b
commit
547a4f2ab5
5 changed files with 211 additions and 76 deletions
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@ -318,12 +318,43 @@ public class PcodeDataTypeManager {
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throw new IllegalArgumentException("Unsupported character size");
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}
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private String buildTypeInternal(DataType type, int size) { // Build all of type except name attribute
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if (type instanceof TypeDef) {
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type = ((TypeDef) type).getBaseDataType();
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private void appendOpaqueString(StringBuilder resBuf, DataType type, int size) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "struct");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeBooleanAttribute(resBuf, "opaquestring", true);
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SpecXmlUtils.encodeBooleanAttribute(resBuf, "varlength", true);
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resBuf.append(">\n");
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resBuf.append("<field name=\"unknown_data1\"");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "offset", 0);
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resBuf.append("> <typeref name=\"byte\"/></field>\n");
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size -= 1;
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resBuf.append("<field name=\"opaque_data\"");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "offset", 1);
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resBuf.append("> <type");
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size);
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resBuf.append("><typeref name=\"byte\"/></type>");
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resBuf.append("</field>\n");
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}
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private String buildTypeInternal(DataType origType, int size) { // Build all of type except name attribute
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DataType type;
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if (origType instanceof TypeDef) {
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type = ((TypeDef) origType).getBaseDataType();
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}
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else {
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type = origType;
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}
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StringBuilder resBuf = new StringBuilder();
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if (type instanceof Pointer) {
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if (origType == type) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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}
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else {
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appendNameIdAttributes(resBuf, origType);
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}
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "ptr");
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int ptrLen = type.getLength();
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if (ptrLen <= 0) {
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@ -344,26 +375,35 @@ public class PcodeDataTypeManager {
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if (ptrto == null) {
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ptrtoTypeRef = buildTypeRef(DefaultDataType.dataType, 1);
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}
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else if ((ptrto instanceof StringDataType) ||
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(type instanceof TerminatedStringDataType)) { // Convert pointer to string
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ptrtoTypeRef = getCharTypeRef(dataOrganization.getCharSize()); // to pointer to char
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}
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else if (ptrto instanceof StringUTF8DataType) { // Convert pointer to string
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// TODO: Need to ensure that UTF8 decoding applies
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ptrtoTypeRef = getCharTypeRef(1); // to pointer to char
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else if (ptrto instanceof AbstractStringDataType) {
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if ((ptrto instanceof StringDataType) ||
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(type instanceof TerminatedStringDataType)) { // Convert pointer to string
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ptrtoTypeRef = getCharTypeRef(dataOrganization.getCharSize()); // to pointer to char
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}
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else if (ptrto instanceof StringUTF8DataType) { // Convert pointer to string
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// TODO: Need to ensure that UTF8 decoding applies
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ptrtoTypeRef = getCharTypeRef(1); // to pointer to char
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}
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else if ((ptrto instanceof UnicodeDataType) ||
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(ptrto instanceof TerminatedUnicodeDataType)) {
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ptrtoTypeRef = getCharTypeRef(2);
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}
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else if ((ptrto instanceof Unicode32DataType) ||
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(ptrto instanceof TerminatedUnicode32DataType)) {
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ptrtoTypeRef = getCharTypeRef(4);
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}
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else {
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ptrtoTypeRef = new StringBuilder();
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ptrtoTypeRef.append("<type");
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appendNameIdAttributes(ptrtoTypeRef, ptrto);
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appendOpaqueString(ptrtoTypeRef, ptrto, 16384);
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ptrtoTypeRef.append("</type>\n");
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}
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}
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else if (ptrto instanceof FunctionDefinition) {
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// FunctionDefinition may have size of -1, do not translate to undefined
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ptrtoTypeRef = buildTypeRef(ptrto, ptrto.getLength());
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}
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else if ((ptrto instanceof UnicodeDataType) ||
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(ptrto instanceof TerminatedUnicodeDataType)) {
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ptrtoTypeRef = getCharTypeRef(2);
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}
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else if ((ptrto instanceof Unicode32DataType) ||
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(ptrto instanceof TerminatedUnicode32DataType)) {
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ptrtoTypeRef = getCharTypeRef(4);
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}
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else if (ptrto.getLength() < 0 && !(ptrto instanceof FunctionDefinition)) {
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ptrtoTypeRef = buildTypeRef(Undefined1DataType.dataType, 1);
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}
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@ -373,6 +413,12 @@ public class PcodeDataTypeManager {
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resBuf.append(ptrtoTypeRef);
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}
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else if (type instanceof Array) {
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if (origType == type) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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}
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else {
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appendNameIdAttributes(resBuf, origType);
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}
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int sz = type.getLength();
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if (sz == 0) {
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sz = size;
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@ -386,6 +432,7 @@ public class PcodeDataTypeManager {
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buildTypeRef(((Array) type).getDataType(), ((Array) type).getElementLength()));
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}
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else if (type instanceof Structure) {
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appendNameIdAttributes(resBuf, origType);
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// if size is 0, insert an Undefined4 component
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//
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int sz = type.getLength();
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@ -417,6 +464,7 @@ public class PcodeDataTypeManager {
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// TODO: trailing flexible array component not yet supported
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}
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else if (type instanceof Enum) {
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appendNameIdAttributes(resBuf, origType);
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Enum enumDt = (Enum) type;
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long[] keys = enumDt.getValues();
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String metatype = "uint";
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@ -438,6 +486,7 @@ public class PcodeDataTypeManager {
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}
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}
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else if (type instanceof CharDataType) {
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appendNameIdAttributes(resBuf, origType);
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boolean signed = ((CharDataType) type).isSigned();
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int sz = type.getLength();
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if (sz <= 0) {
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@ -455,44 +504,57 @@ public class PcodeDataTypeManager {
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}
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else if (type instanceof WideCharDataType || type instanceof WideChar16DataType ||
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type instanceof WideChar32DataType) {
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appendNameIdAttributes(resBuf, origType);
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "int");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", type.getLength());
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SpecXmlUtils.encodeBooleanAttribute(resBuf, "utf", true);
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resBuf.append('>');
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}
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else if ((type instanceof StringDataType) || (type instanceof TerminatedStringDataType)) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size);
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resBuf.append('>');
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resBuf.append(getCharTypeRef(dataOrganization.getCharSize()));
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}
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else if (type instanceof StringUTF8DataType) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size);
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resBuf.append('>');
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resBuf.append(getCharTypeRef(1)); // TODO: Need to ensure that UTF8 decoding applies
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}
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else if ((type instanceof UnicodeDataType) || (type instanceof TerminatedUnicodeDataType)) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size / 2);
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resBuf.append('>');
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resBuf.append(getCharTypeRef(2));
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}
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else if ((type instanceof Unicode32DataType) ||
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(type instanceof TerminatedUnicode32DataType)) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size / 4);
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resBuf.append('>');
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resBuf.append(getCharTypeRef(4));
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else if (type instanceof AbstractStringDataType) {
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if ((type instanceof StringDataType) || (type instanceof TerminatedStringDataType)) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size);
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resBuf.append('>');
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resBuf.append(getCharTypeRef(dataOrganization.getCharSize()));
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}
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else if (type instanceof StringUTF8DataType) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size);
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resBuf.append('>');
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resBuf.append(getCharTypeRef(1)); // TODO: Need to ensure that UTF8 decoding applies
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}
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else if ((type instanceof UnicodeDataType) ||
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(type instanceof TerminatedUnicodeDataType)) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size / 2);
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resBuf.append('>');
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resBuf.append(getCharTypeRef(2));
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}
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else if ((type instanceof Unicode32DataType) ||
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(type instanceof TerminatedUnicode32DataType)) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", size);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", size / 4);
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resBuf.append('>');
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resBuf.append(getCharTypeRef(4));
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}
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else {
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appendNameIdAttributes(resBuf, type);
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appendOpaqueString(resBuf, type, size);
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}
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}
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else if (type instanceof FunctionDefinition) {
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if (size <= 0) {
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size = 1;
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}
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appendNameIdAttributes(resBuf, origType);
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "code");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", 1); // Force size of 1
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resBuf.append('>');
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@ -502,6 +564,7 @@ public class PcodeDataTypeManager {
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fproto.buildPrototypeXML(resBuf, this);
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}
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else if (type instanceof BooleanDataType) {
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appendNameIdAttributes(resBuf, origType);
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "bool");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", type.getLength());
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resBuf.append('>');
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@ -512,11 +575,13 @@ public class PcodeDataTypeManager {
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if (sz <= 0) {
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sz = size;
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}
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appendNameIdAttributes(resBuf, origType);
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", signed ? "int" : "uint");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", sz);
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resBuf.append('>');
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}
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else if (type instanceof AbstractFloatDataType) {
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appendNameIdAttributes(resBuf, origType);
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "float");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", type.getLength());
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resBuf.append('>');
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@ -527,11 +592,13 @@ public class PcodeDataTypeManager {
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sz = size;
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}
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if (sz < 16) {
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appendNameIdAttributes(resBuf, origType);
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "unknown");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", sz);
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resBuf.append('>');
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}
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else {
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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SpecXmlUtils.encodeStringAttribute(resBuf, "metatype", "array");
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "size", sz);
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SpecXmlUtils.encodeSignedIntegerAttribute(resBuf, "arraysize", sz);
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@ -542,6 +609,20 @@ public class PcodeDataTypeManager {
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return resBuf.toString();
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}
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private void appendNameIdAttributes(StringBuilder resBuf, DataType type) {
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if (type instanceof BuiltIn) {
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SpecXmlUtils.xmlEscapeAttribute(resBuf, "name",
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((BuiltIn) type).getDecompilerDisplayName(displayLanguage));
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}
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else {
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SpecXmlUtils.xmlEscapeAttribute(resBuf, "name", type.getName());
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long id = progDataTypes.getID(type);
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if (id > 0) {
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SpecXmlUtils.encodeUnsignedIntegerAttribute(resBuf, "id", id);
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}
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}
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}
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/**
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* Build an XML document string representing the type information for a data type
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*
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@ -559,23 +640,6 @@ public class PcodeDataTypeManager {
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return resBuf.append("<void/>");
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}
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resBuf.append("<type");
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if ((type instanceof Pointer) || (type instanceof Array) ||
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(!(type instanceof FunctionDefinition) && type.getLength() <= 0)) {
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SpecXmlUtils.encodeStringAttribute(resBuf, "name", "");
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}
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else {
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if (type instanceof BuiltIn) {
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SpecXmlUtils.xmlEscapeAttribute(resBuf, "name",
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((BuiltIn) type).getDecompilerDisplayName(displayLanguage));
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}
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else {
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SpecXmlUtils.xmlEscapeAttribute(resBuf, "name", type.getName());
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long id = progDataTypes.getID(type);
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if (id > 0) {
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SpecXmlUtils.encodeUnsignedIntegerAttribute(resBuf, "id", id);
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}
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}
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}
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resBuf.append(buildTypeInternal(type, size));
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resBuf.append("</type>");
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return resBuf;
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