fint sendDesc::ntargets() {
char *addr= jump_addr();
if (addr == lookupRoutine()) return 0;
if (Memory->code->contains(addr)) return 1;
assert(Memory->code->stubs->contains(addr), "what is it?");
NCodeBase *n= findStub(addr);
return n->isCountStub() ? 1 : ((CacheStub*)n)->arity();
}
// NB: get_method() is not quite equivalent to target(): the former returns
// an nmethod even when it is called via a count stub, the latter returns
// NULL in this case.
// It can also be called on dummy sendDescs representing glue code
nmethod* sendDesc::get_method() {
char *addr= jump_addr();
if (Memory->code->contains(addr)) return nmethod_from_insts(addr);
if (!Memory->code->stubs->contains(addr)) return NULL;
NCodeBase *n= findStub(addr);
assert(n->isCountStub(), "shouldn't call on PICs");
return ((CountStub*)n)->target();
}
NCodeBase* findThing(void* addr) {
if (Memory->code->stubs->contains(addr)) {
return findStub(addr);
} else if (Memory->code->contains(addr)) {
nmethod* n= nmethod_from_insts((char*)addr);
assert(isNMethod(n), "not a method");
return n;
} else {
return NULL;
}
}
CacheStub* sendDesc::pic() {
char* addr = jump_addr();
if (Memory->code->contains(addr)) {
// linked to a nmethod
return NULL;
} else if (Memory->code->stubs->contains(addr)) {
NCodeBase* stub = findStub(addr);
return stub->isCacheStub() ? (CacheStub*)stub : NULL;
} else {
return NULL;
}
}
CountStub* sendDesc::countStub() {
char* addr= jump_addr();
if (Memory->code->contains(addr)) {
// linked to a nmethod
assert(!Memory->code->stubs->contains(addr), "zones overlap");
return NULL;
} else if (Memory->code->stubs->contains(addr)) {
NCodeBase* stub = findStub(addr);
return stub->isCountStub() ? (CountStub*)stub : NULL;
} else {
return NULL;
}
}
