static void recordNameAndArgs(const SrcKey& sk,
const StringData* name,
int numArgs) {
CallRecord cr;
cr.m_type = EncodedNameAndArgs;
cr.m_encodedName = encodeCallAndArgs(name, numArgs);
s_callDB.insert(std::make_pair(sk, cr));
}
static void recordFunc(const SrcKey sk,
const Func* func) {
FTRACE(2, "annotation: recordFunc: {}@{} {}\n",
sk.unit()->filepath()->data(),
sk.offset(),
func->fullName()->data());
s_callDB.insert(std::make_pair(sk, func));
}
static void recordFunc(NormalizedInstruction& i,
const SrcKey& sk,
const Func* func) {
FTRACE(2, "annotation: recordFunc: {}@{} {}\n",
i.m_unit->filepath()->data(),
sk.offset(),
func->fullName()->data());
CallRecord cr;
cr.m_type = Function;
cr.m_func = func;
s_callDB.insert(std::make_pair(sk, cr));
i.directCall = true;
}
namespace Transl {
static const Trace::Module TRACEMOD = Trace::trans;
/*
* A mapping from FCall instructions to the statically-known StringData*
* that they're calling. Used to accelerate our FCall translations.
*/
enum CallRecordType {
EncodedNameAndArgs,
Function
};
struct CallRecord {
CallRecordType m_type;
union {
const StringData* m_encodedName;
const Func* m_func;
};
};
typedef hphp_hash_map<SrcKey, CallRecord, SrcKey> CallDB;
static CallDB s_callDB;
/* record the max number of args to enable invalidation */
static int s_maxNumArgs;
int getMaxEncodedArgs() { return s_maxNumArgs; }
const StringData*
encodeCallAndArgs(const StringData* name, int numArgs) {
char numArgsBuf[16];
if (numArgs > s_maxNumArgs) s_maxNumArgs = numArgs;
snprintf(numArgsBuf, 15, "@%d@", numArgs);
String s = String(numArgsBuf) + String(name->data());
return StringData::GetStaticString(s.get());
}
static void
decodeNameAndArgs(const StringData* enc, string& outName, int& outNumArgs) {
const char* numArgs = strchr(enc->data(), '@');
assert(numArgs && *numArgs =='@');
numArgs++;
outNumArgs = atoi(numArgs);
const char* name = strchr(numArgs, '@');
assert(name && *name == '@');
name++;
outName = name;
}
static void recordNameAndArgs(const SrcKey& sk,
const StringData* name,
int numArgs) {
CallRecord cr;
cr.m_type = EncodedNameAndArgs;
cr.m_encodedName = encodeCallAndArgs(name, numArgs);
s_callDB.insert(std::make_pair(sk, cr));
}
static void recordFunc(NormalizedInstruction& i,
const SrcKey& sk,
const Func* func) {
FTRACE(2, "annotation: recordFunc: {}@{} {}\n",
i.m_unit->filepath()->data(),
sk.offset(),
func->fullName()->data());
CallRecord cr;
cr.m_type = Function;
cr.m_func = func;
s_callDB.insert(std::make_pair(sk, cr));
i.directCall = true;
}
static void recordActRecPush(NormalizedInstruction& i,
const Unit* unit,
const StringData* name,
const StringData* clsName,
bool staticCall) {
const SrcKey& sk = i.source;
FTRACE(2, "annotation: recordActRecPush: {}@{} {}{}{} ({}static)\n",
unit->filepath()->data(),
sk.offset(),
clsName ? clsName->data() : "",
clsName ? "::" : "",
name,
!staticCall ? "non" : "");
SrcKey next(sk);
next.advance(unit);
const FPIEnt *fpi = curFunc()->findFPI(next.offset());
assert(fpi);
assert(name->isStatic());
assert(sk.offset() == fpi->m_fpushOff);
SrcKey fcall = sk;
fcall.m_offset = fpi->m_fcallOff;
assert(isFCallStar(*unit->at(fcall.offset())));
if (clsName) {
const Class* cls = Unit::lookupUniqueClass(clsName);
bool magic = false;
const Func* func = lookupImmutableMethod(cls, name, magic, staticCall);
if (func) {
recordFunc(i, fcall, func);
}
return;
}
const Func* func = Unit::lookupFunc(name);
if (func && func->isNameBindingImmutable(unit)) {
// this will never go into a call cache, so we dont need to
// encode the args. it will be used in OpFCall below to
// set the i->funcd.
recordFunc(i, fcall, func);
} else {
// It's not enough to remember the function name; we also need to encode
// the number of arguments and current flag disposition.
int numArgs = getImm(unit->at(sk.offset()), 0).u_IVA;
recordNameAndArgs(fcall, name, numArgs);
}
}
void annotate(NormalizedInstruction* i) {
switch(i->op()) {
case OpFPushObjMethodD:
case OpFPushClsMethodD:
case OpFPushClsMethodF:
case OpFPushFuncD: {
// When we push predictable action records, we can use a simpler
// translation for their corresponding FCall.
const StringData* className = nullptr;
const StringData* funcName = nullptr;
if (i->op() == OpFPushFuncD) {
funcName = curUnit()->lookupLitstrId(i->imm[1].u_SA);
} else if (i->op() == OpFPushObjMethodD) {
if (i->inputs[0]->valueType() != KindOfObject) break;
const Class* cls = i->inputs[0]->rtt.valueClass();
if (!cls) break;
funcName = curUnit()->lookupLitstrId(i->imm[1].u_SA);
className = cls->name();
} else if (i->op() == OpFPushClsMethodF) {
if (!i->inputs[1]->isString() ||
i->inputs[1]->rtt.valueString() == nullptr ||
i->inputs[0]->valueType() != KindOfClass) {
break;
}
const Class* cls = i->inputs[0]->rtt.valueClass();
if (!cls) break;
funcName = i->inputs[1]->rtt.valueString();
className = cls->name();
} else {
assert(i->op() == OpFPushClsMethodD);
funcName = curUnit()->lookupLitstrId(i->imm[1].u_SA);
className = curUnit()->lookupLitstrId(i->imm[2].u_SA);
}
assert(funcName->isStatic());
recordActRecPush(*i, curUnit(), funcName, className,
i->op() == OpFPushClsMethodD ||
i->op() == OpFPushClsMethodF);
} break;
case OpFCall:
case OpFCallArray: {
CallRecord callRec;
if (mapGet(s_callDB, i->source, &callRec)) {
if (callRec.m_type == Function) {
i->funcd = callRec.m_func;
} else {
assert(callRec.m_type == EncodedNameAndArgs);
i->funcName = callRec.m_encodedName;
}
} else {
i->funcName = nullptr;
}
} break;
default: break;
}
}
const StringData*
fcallToFuncName(const NormalizedInstruction* i) {
CallRecord callRec;
if (mapGet(s_callDB, i->source, &callRec)) {
if (callRec.m_type == Function) {
return callRec.m_func->name();
}
string name;
int numArgs;
decodeNameAndArgs(callRec.m_encodedName, name, numArgs);
return StringData::GetStaticString(name.c_str());
}
return nullptr;
}
} } }
void recordFunc(const SrcKey& sk, const Func* func) {
CallRecord cr;
cr.m_type = Function;
cr.m_func = func;
s_callDB.insert(std::make_pair(sk, cr));
}
namespace Transl {
static const Trace::Module TRACEMOD = Trace::trans;
/*
* A mapping from FCall instructions to the statically-known StringData*
* that they're calling. Used to accelerate our FCall translations.
*/
enum CallRecordType {
EncodedNameAndArgs,
Function
};
struct CallRecord {
CallRecordType m_type;
union {
const StringData* m_encodedName;
const Func* m_func;
};
};
typedef hphp_hash_map<SrcKey, CallRecord, SrcKey> CallDB;
static CallDB s_callDB;
/* record the max number of args to enable invalidation */
static int s_maxNumArgs;
int getMaxEncodedArgs() { return s_maxNumArgs; }
const StringData*
encodeCallAndArgs(const StringData* name, int numArgs) {
char numArgsBuf[16];
if (numArgs > s_maxNumArgs) s_maxNumArgs = numArgs;
snprintf(numArgsBuf, 15, "@%d@", numArgs);
String s = String(numArgsBuf) + String(name->data());
return StringData::GetStaticString(s.get());
}
void recordNameAndArgs(const SrcKey& sk, const StringData* name, int numArgs) {
CallRecord cr;
cr.m_type = EncodedNameAndArgs;
cr.m_encodedName = encodeCallAndArgs(name, numArgs);
s_callDB.insert(std::make_pair(sk, cr));
}
void recordFunc(const SrcKey& sk, const Func* func) {
CallRecord cr;
cr.m_type = Function;
cr.m_func = func;
s_callDB.insert(std::make_pair(sk, cr));
}
static void recordActRecPush(const SrcKey& sk,
const Unit* unit,
const FPIEnt* fpi,
const StringData* name,
const StringData* clsName,
bool staticCall) {
// sk is the address of a FPush* of the function whose static name
// is name. The boundaries of FPI regions are such that we can't quite
// find the FCall that matches this FuncD without decoding forward to
// the end; this is not ideal, but is hopefully affordable at translation
// time.
ASSERT(name->isStatic());
ASSERT(sk.offset() == fpi->m_fpushOff);
SrcKey fcall;
SrcKey next(sk);
next.advance(unit);
do {
if (*unit->at(next.offset()) == OpFCall) {
// Remember the last FCall in the region; the region might end
// with UnboxR, e.g.
fcall = next;
}
next.advance(unit);
} while (next.offset() <= fpi->m_fcallOff);
ASSERT(*unit->at(fcall.offset()) == OpFCall);
if (clsName) {
const Class* cls = Unit::lookupClass(clsName);
bool magic = false;
const Func* func = lookupImmutableMethod(cls, name, magic, staticCall);
if (func) {
recordFunc(fcall, func);
}
return;
}
const Func* func = Unit::lookupFunc(name);
if (func && func->isNameBindingImmutable(unit)) {
// this will never go into a call cache, so we dont need to
// encode the args. it will be used in OpFCall below to
// set the i->funcd.
recordFunc(fcall, func);
} else {
// It's not enough to remember the function name; we also need to encode
// the number of arguments and current flag disposition.
int numArgs = getImm(unit->at(sk.offset()), 0).u_IVA;
recordNameAndArgs(fcall, name, numArgs);
}
}
void annotate(NormalizedInstruction* i) {
switch(i->op()) {
case OpFPushObjMethodD:
case OpFPushClsMethodD:
case OpFPushClsMethodF:
case OpFPushFuncD: {
// When we push predictable action records, we can use a simpler
// translation for their corresponding FCall.
SrcKey next(i->source);
next.advance(curUnit());
const StringData* className = NULL;
const StringData* funcName = NULL;
if (i->op() == OpFPushFuncD) {
funcName = curUnit()->lookupLitstrId(i->imm[1].u_SA);
} else if (i->op() == OpFPushObjMethodD) {
if (i->inputs[0]->valueType() != KindOfObject) break;
const Class* cls = i->inputs[0]->rtt.valueClass();
if (!cls) break;
funcName = curUnit()->lookupLitstrId(i->imm[1].u_SA);
className = cls->name();
} else if (i->op() == OpFPushClsMethodF) {
if (i->inputs[1]->rtt.valueString() == NULL ||
i->inputs[0]->valueType() != KindOfClass) {
break;
}
const Class* cls = i->inputs[0]->rtt.valueClass();
if (!cls) break;
funcName = i->inputs[1]->rtt.valueString();
className = cls->name();
} else {
ASSERT(i->op() == OpFPushClsMethodD);
funcName = curUnit()->lookupLitstrId(i->imm[1].u_SA);
className = curUnit()->lookupLitstrId(i->imm[2].u_SA);
}
ASSERT(funcName->isStatic());
const FPIEnt *fe = curFunc()->findFPI(next.m_offset);
ASSERT(fe);
recordActRecPush(i->source, curUnit(), fe, funcName, className,
i->op() == OpFPushClsMethodD ||
i->op() == OpFPushClsMethodF);
} break;
case OpFCall: {
CallRecord callRec;
if (mapGet(s_callDB, i->source, &callRec)) {
if (callRec.m_type == Function) {
i->funcd = callRec.m_func;
} else {
ASSERT(callRec.m_type == EncodedNameAndArgs);
i->funcName = callRec.m_encodedName;
}
} else {
i->funcName = NULL;
}
} break;
default: break;
}
}
} } }
namespace JIT {
TRACE_SET_MOD(trans);
const StaticString s_empty("");
/*
* A mapping from FCall instructions to the statically-known Func* that they're
* calling. Used to accelerate our FCall translations.
*/
typedef hphp_hash_map<SrcKey,const Func*,SrcKey::Hasher> CallDB;
static CallDB s_callDB;
static void recordFunc(const SrcKey sk,
const Func* func) {
FTRACE(2, "annotation: recordFunc: {}@{}{} {}\n",
sk.unit()->filepath()->data(),
sk.offset(),
sk.resumed() ? "r" : "",
func->fullName()->data());
s_callDB.insert(std::make_pair(sk, func));
}
static const Func* lookupDirectFunc(SrcKey const sk,
const StringData* fname,
const StringData* clsName,
bool staticCall) {
if (clsName && !clsName->isame(s_empty.get())) {
auto const cls = Unit::lookupUniqueClass(clsName);
bool magic = false;
auto const ctx = sk.func()->cls();
return lookupImmutableMethod(cls, fname, magic, staticCall, ctx);
}
auto const func = Unit::lookupFunc(fname);
if (func && func->isNameBindingImmutable(sk.unit())) {
return func;
}
return nullptr;
}
static void recordActRecPush(const SrcKey sk,
const StringData* name,
const StringData* clsName,
bool staticCall) {
auto unit = sk.unit();
FTRACE(2, "annotation: recordActRecPush: {}@{} {}{}{} ({}static)\n",
unit->filepath()->data(),
sk.offset(),
clsName ? clsName->data() : "",
clsName ? "::" : "",
name,
!staticCall ? "non" : "");
SrcKey next(sk);
next.advance(unit);
const FPIEnt *fpi = sk.func()->findFPI(next.offset());
assert(fpi);
assert(name->isStatic());
assert(sk.offset() == fpi->m_fpushOff);
auto const fcall = SrcKey { sk.func(), fpi->m_fcallOff, sk.resumed() };
assert(isFCallStar(*reinterpret_cast<const Op*>(unit->at(fcall.offset()))));
auto const func = lookupDirectFunc(sk, name, clsName, staticCall);
if (func) {
recordFunc(fcall, func);
}
}
void annotate(NormalizedInstruction* i) {
switch(i->op()) {
case OpFPushObjMethodD:
case OpFPushClsMethodD:
case OpFPushClsMethodF:
case OpFPushCtorD:
case OpFPushCtor:
case OpFPushFuncD: {
if (RuntimeOption::RepoAuthoritative && Repo::global().UsedHHBBC) {
break;
}
// When we push predictable activation records, we can use a simpler
// translation for their corresponding FCall.
const StringData* className = nullptr;
const StringData* funcName = nullptr;
if (i->op() == OpFPushFuncD) {
funcName = i->m_unit->lookupLitstrId(i->imm[1].u_SA);
} else if (i->op() == OpFPushObjMethodD) {
if (i->inputs[0]->valueType() != KindOfObject) break;
const Class* cls = i->inputs[0]->rtt.valueClass();
if (!cls) break;
funcName = i->m_unit->lookupLitstrId(i->imm[1].u_SA);
className = cls->name();
} else if (i->op() == OpFPushClsMethodF) {
if (!i->inputs[1]->isString() ||
i->inputs[1]->rtt.valueString() == nullptr ||
i->inputs[0]->valueType() != KindOfClass) {
break;
}
const Class* cls = i->inputs[0]->rtt.valueClass();
if (!cls) break;
funcName = i->inputs[1]->rtt.valueString();
className = cls->name();
} else if (i->op() == OpFPushClsMethodD) {
funcName = i->m_unit->lookupLitstrId(i->imm[1].u_SA);
className = i->m_unit->lookupLitstrId(i->imm[2].u_SA);
} else if (i->op() == OpFPushCtorD) {
className = i->m_unit->lookupLitstrId(i->imm[1].u_SA);
const Class* cls = Unit::lookupUniqueClass(className);
if (!cls) break;
auto const ctor = cls->getCtor();
funcName = ctor->name();
className = ctor->cls()->name();
} else {
assert(i->op() == OpFPushCtor);
const Class* cls = i->inputs[0]->rtt.valueClass();
if (!cls) break;
auto const ctor = cls->getCtor();
funcName = ctor->name();
className = ctor->cls()->name();
}
assert(funcName->isStatic());
recordActRecPush(i->source, funcName, className,
i->op() == OpFPushClsMethodD ||
i->op() == OpFPushClsMethodF);
} break;
case OpFCall:
case OpFCallArray: {
if (RuntimeOption::RepoAuthoritative && Repo::global().UsedHHBBC) {
break;
}
if (auto const func = folly::get_ptr(s_callDB, i->source)) {
i->funcd = *func;
}
} break;
default: break;
case Op::FCallD: {
auto const fpi = i->func()->findFPI(i->source.offset());
auto const pushOp = i->m_unit->getOpcode(fpi->m_fpushOff);
auto const clsName = i->m_unit->lookupLitstrId(i->imm[1].u_SA);
auto const funcName = i->m_unit->lookupLitstrId(i->imm[2].u_SA);
auto const isStatic = pushOp == Op::FPushClsMethodD ||
pushOp == Op::FPushClsMethodF ||
pushOp == Op::FPushClsMethod;
/*
* Currently we don't attempt any of this for FPushClsMethod
* because lookupImmutableMethod is only for situations that
* don't involve LSB.
*/
auto const func =
pushOp == Op::FPushClsMethod
? nullptr
: lookupDirectFunc(i->source, funcName, clsName, isStatic);
if (func) {
FTRACE(1, "found direct func (%s) for FCallD\n",
func->fullName()->data());
i->funcd = func;
}
break;
}
}
}
const StringData*
fcallToFuncName(const NormalizedInstruction* i) {
if (i->op() == Op::FCallD) {
return i->m_unit->lookupLitstrId(i->imm[2].u_SA);
}
if (RuntimeOption::RepoAuthoritative && Repo::global().UsedHHBBC) {
return nullptr;
}
if (auto const func = folly::get_ptr(s_callDB, i->source)) {
return (*func)->name();
}
return nullptr;
}
} }
