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/*
* (C) 2015 by Computer System Laboratory, IIS, Academia Sinica, Taiwan.
* See COPYRIGHT in top-level directory.
*/
#include "xml/tinyxml2.h"
#include "optimization.h"
#include "llvm-debug.h"
#include "llvm-annotate.h"
using namespace tinyxml2;
static hqemu::Mutex Lock;
#if defined(CONFIG_USER_ONLY)
extern "C" const char *filename;
#endif
AnnotationFactory::AnnotationFactory()
{
#if defined(CONFIG_USER_ONLY)
int ret;
MetaFile = std::string(filename).append(".xml");
ret = ParseXML(MetaFile.c_str());
if (ret != 0)
return;
#endif
}
AnnotationFactory::~AnnotationFactory()
{
for (auto L : Loops)
delete L.second;
}
static inline const char *getAttrName(XMLElement *Attr)
{
return Attr->Name();
}
static inline const char *getAttrValue(XMLElement *Attr)
{
return Attr->FirstChild() ? Attr->FirstChild()->ToText()->Value() : "";
}
static LoopMetadata *ParseXMLLoop(XMLElement *LoopNode)
{
if (LoopNode == nullptr)
return nullptr;
LoopMetadata *LoopMD = new LoopMetadata();
XMLElement *Attr = LoopNode->FirstChildElement();
while (Attr) {
std::string Name = getAttrName(Attr);
const char *Val = getAttrValue(Attr);
if (strlen(Val) == 0)
goto next;
if (Name == "address")
LoopMD->Address = (target_ulong)strtoull(Val, nullptr, 16);
else if (Name == "length")
LoopMD->Length = (uint32_t)strtoul(Val, nullptr, 10);
else if (Name == "vs")
LoopMD->VS = (uint32_t)strtoul(Val, nullptr, 10);
else if (Name == "vf")
LoopMD->VF = (uint32_t)strtoul(Val, nullptr, 10);
else if (Name == "distance") {
LoopMD->Distance = atoi(Val);
if (LoopMD->Distance == 0)
LoopMD->Distance = INT_MAX;
}
else if (Name == "start") LoopMD->Start = atoi(Val);
else if (Name == "end") LoopMD->End = atoi(Val);
else if (Name == "stride") LoopMD->Stride = atoi(Val);
next:
Attr = Attr->NextSiblingElement();
}
if (LoopMD->Address == (target_ulong)-1) {
delete LoopMD;
return nullptr;
}
return LoopMD;
}
int AnnotationFactory::ParseXML(const char *name)
{
XMLDocument Doc;
XMLElement *RootNode, *LoopNode;
if (Doc.LoadFile(name) != 0) {
dbg() << DEBUG_ANNOTATE << "Disable annotation support."
<< " (cannot find " << name << ")\n";
return 1;
}
dbg() << DEBUG_ANNOTATE << "Found an annotation file " << name << "\n";
/* A legal annoation should be embedded within the <hqemu> tag. For example:
* <hqemu><loop><addr>...</addr></loop></hqemu> */
RootNode = Doc.FirstChildElement("hqemu");
if (RootNode == nullptr)
return 1;
LoopNode = RootNode->FirstChildElement("loop");
while (LoopNode) {
LoopMetadata *LoopMD = ParseXMLLoop(LoopNode);
if (LoopMD)
Loops[LoopMD->Address] = LoopMD;
LoopNode = LoopNode->NextSiblingElement();
}
dbg() << DEBUG_ANNOTATE
<< "Found " << Loops.size() << " loop annotation(s).\n";
return 0;
}
LoopMetadata *AnnotationFactory::getLoopAnnotation(target_ulong addr)
{
hqemu::MutexGuard locked(Lock);
if (Loops.find(addr) == Loops.end())
return nullptr;
return Loops[addr];
}
bool AnnotationFactory::hasLoopAnnotation(target_ulong addr)
{
hqemu::MutexGuard locked(Lock);
return Loops.count(addr) ? true : false;
}
/*
* vim: ts=8 sts=4 sw=4 expandtab
*/
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