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GP-2157 Marshaling refactor. Decompiler side.

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This commit is contained in:
caheckman 2022-05-17 16:15:21 -04:00
parent 672c1f11e2
commit d8c10bf229
97 changed files with 5313 additions and 3733 deletions
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136
Ghidra/Features/Decompiler/src/decompile/cpp/inject_sleigh.cc
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@ -61,22 +61,31 @@ void InjectPayloadSleigh::inject(InjectContext &context,PcodeEmit &emit) const
con.cacher.emit(con.baseaddr,&emit);
}
void InjectPayloadSleigh::restoreXml(const Element *el)
/// The content is read as raw p-code source
/// \param decoder is the XML stream decoder
void InjectPayloadSleigh::decodeBody(Decoder &decoder)
{
InjectPayload::restoreXml(el);
const List &list(el->getChildren());
List::const_iterator iter;
for(iter=list.begin();iter!=list.end();++iter) {
const Element *subel = *iter;
if (subel->getName() == "body") {
parsestring = subel->getContent();
}
uint4 elemId = decoder.openElement(); // Tag may not be present
if (elemId == ELEM_BODY) {
parsestring = decoder.readString(ATTRIB_CONTENT);
decoder.closeElement(elemId);
}
if (parsestring.size() == 0 && (!dynamic))
throw LowlevelError("Missing <body> subtag in <pcode>: "+getSource());
}
void InjectPayloadSleigh::decode(Decoder &decoder)
{
// Restore a raw <pcode> tag. Used for uponentry, uponreturn
uint4 elemId = decoder.openElement(ELEM_PCODE);
decodePayloadAttributes(decoder);
decodePayloadParams(decoder);
decodeBody(decoder);
decoder.closeElement(elemId);
}
void InjectPayloadSleigh::printTemplate(ostream &s) const
{
@ -138,23 +147,27 @@ InjectPayloadCallfixup::InjectPayloadCallfixup(const string &sourceName)
{
}
void InjectPayloadCallfixup::restoreXml(const Element *el)
void InjectPayloadCallfixup::decode(Decoder &decoder)
{
const List &list(el->getChildren());
List::const_iterator iter;
name = el->getAttributeValue("name");
uint4 elemId = decoder.openElement(ELEM_CALLFIXUP);
name = decoder.readString(ATTRIB_NAME);
bool pcodeSubtag = false;
for(iter=list.begin();iter!=list.end();++iter) {
const Element *subel = *iter;
if (subel->getName() == "pcode") {
InjectPayloadSleigh::restoreXml(subel);
for(;;) {
uint4 subId = decoder.openElement();
if (subId == 0) break;
if (subId == ELEM_PCODE) {
decodePayloadAttributes(decoder);
decodePayloadParams(decoder);
decodeBody(decoder);
pcodeSubtag = true;
}
else if (subel->getName() == "target")
targetSymbolNames.push_back(subel->getAttributeValue("name"));
else if (subId == ELEM_TARGET)
targetSymbolNames.push_back(decoder.readString(ATTRIB_NAME));
decoder.closeElement(subId);
}
decoder.closeElement(elemId);
if (!pcodeSubtag)
throw LowlevelError("<callfixup> is missing <pcode> subtag: "+name);
}
@ -164,16 +177,19 @@ InjectPayloadCallother::InjectPayloadCallother(const string &sourceName)
{
}
void InjectPayloadCallother::restoreXml(const Element *el)
void InjectPayloadCallother::decode(Decoder &decoder)
{
const List &list(el->getChildren());
List::const_iterator iter;
name = el->getAttributeValue("targetop");
iter = list.begin();
if ((iter == list.end()) || ((*iter)->getName() != "pcode"))
uint4 elemId = decoder.openElement(ELEM_CALLOTHERFIXUP);
name = decoder.readString(ATTRIB_TARGETOP);
uint4 subId = decoder.openElement();
if (subId != ELEM_PCODE)
throw LowlevelError("<callotherfixup> does not contain a <pcode> tag");
InjectPayloadSleigh::restoreXml(*iter);
decodePayloadAttributes(decoder);
decodePayloadParams(decoder);
decodeBody(decoder);
decoder.closeElement(subId);
decoder.closeElement(elemId);
}
ExecutablePcodeSleigh::ExecutablePcodeSleigh(Architecture *g,const string &src,const string &nm)
@ -211,22 +227,18 @@ void ExecutablePcodeSleigh::inject(InjectContext &context,PcodeEmit &emit) const
con.cacher.emit(con.baseaddr,&emit);
}
void ExecutablePcodeSleigh::restoreXml(const Element *el)
void ExecutablePcodeSleigh::decode(Decoder &decoder)
{
InjectPayload::restoreXml(el);
const List &list(el->getChildren());
List::const_iterator iter;
bool hasbody = false;
for (iter = list.begin(); iter != list.end(); ++iter) {
const Element *subel = *iter;
if (subel->getName() == "body") {
hasbody = true;
parsestring = subel->getContent();
}
}
if (!hasbody)
throw LowlevelError("Missing <body> subtag in <pcode>: " + getSource());
uint4 elemId = decoder.openElement();
if (elemId != ELEM_CASE_PCODE && elemId != ELEM_ADDR_PCODE && elemId != ELEM_DEFAULT_PCODE && elemId != ELEM_SIZE_PCODE)
throw XmlError("Expecting <case_pcode>, <addr_pcode>, <default_pcode>, or <size_pcode>");
decodePayloadAttributes(decoder);
decodePayloadParams(decoder);
uint4 subId = decoder.openElement(ELEM_BODY);
parsestring = decoder.readString(ATTRIB_CONTENT);
decoder.closeElement(subId);
decoder.closeElement(elemId);
}
void ExecutablePcodeSleigh::printTemplate(ostream &s) const
@ -243,16 +255,12 @@ InjectPayloadDynamic::~InjectPayloadDynamic(void)
delete (*iter).second;
}
void InjectPayloadDynamic::restoreEntry(const Element *el)
void InjectPayloadDynamic::decodeEntry(Decoder &decoder)
{
const List &list(el->getChildren());
List::const_iterator iter;
iter = list.begin();
Address addr = Address::restoreXml(*iter,glb);
++iter;
istringstream s((*iter)->getContent());
Address addr = Address::decode(decoder,glb);
uint4 subId = decoder.openElement(ELEM_PAYLOAD);
istringstream s(decoder.readString(ATTRIB_CONTENT));
try {
Document *doc = xml_tree(s);
map<Address,Document *>::iterator iter = addrMap.find(addr);
@ -263,6 +271,7 @@ void InjectPayloadDynamic::restoreEntry(const Element *el)
catch(XmlError &err) {
throw LowlevelError("Error in dynamic payload XML");
}
decoder.closeElement(subId);
}
void InjectPayloadDynamic::inject(InjectContext &context,PcodeEmit &emit) const
@ -272,10 +281,11 @@ void InjectPayloadDynamic::inject(InjectContext &context,PcodeEmit &emit) const
if (eiter == addrMap.end())
throw LowlevelError("Missing dynamic inject");
const Element *el = (*eiter).second->getRoot();
const List &list(el->getChildren());
List::const_iterator iter;
for(iter=list.begin();iter!=list.end();++iter)
emit.restoreXmlOp(*iter,glb->translate);
XmlDecode decoder(el);
uint4 rootId = decoder.openElement(ELEM_INST);
while(decoder.peekElement() != 0)
emit.decodeOp(decoder,glb->translate);
decoder.closeElement(rootId);
}
PcodeInjectLibrarySleigh::PcodeInjectLibrarySleigh(Architecture *g)
@ -402,26 +412,24 @@ void PcodeInjectLibrarySleigh::registerInject(int4 injectid)
}
}
void PcodeInjectLibrarySleigh::restoreDebug(const Element *el)
void PcodeInjectLibrarySleigh::decodeDebug(Decoder &decoder)
{
const List &list(el->getChildren());
List::const_iterator iter;
for(iter=list.begin();iter!=list.end();++iter) {
const Element *subel = *iter;
const string &name( subel->getAttributeValue("name") );
istringstream s( subel->getAttributeValue("type") );
int4 type = -1;
s.unsetf(ios::dec | ios::hex | ios::oct);
s >> type;
uint4 elemId = decoder.openElement(ELEM_INJECTDEBUG);
for(;;) {
uint4 subId = decoder.openElement();
if (subId != ELEM_INJECT) break;
string name = decoder.readString(ATTRIB_NAME);
int4 type = decoder.readSignedInteger(ATTRIB_TYPE);
int4 id = getPayloadId(type,name);
InjectPayloadDynamic *payload = dynamic_cast<InjectPayloadDynamic *>(getPayload(id));
if (payload == (InjectPayloadDynamic *)0) {
payload = forceDebugDynamic(id);
}
payload->restoreEntry(subel);
payload->decodeEntry(decoder);
decoder.closeElement(subId);
}
decoder.closeElement(elemId);
}
const vector<OpBehavior *> &PcodeInjectLibrarySleigh::getBehaviors(void)