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implement various sun.misc.Unsafe and JVM_* methods

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This commit is contained in:
Joel Dice 2011-03-02 08:35:45 -07:00
parent fc45cf767b
commit 4db79b9be6
1 changed files with 65 additions and 2 deletions
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67
src/classpath-openjdk.cpp
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@ -1585,6 +1585,16 @@ Avian_sun_misc_Unsafe_getIntVolatile
return result;
}
extern "C" JNIEXPORT int64_t JNICALL
Avian_sun_misc_Unsafe_getLong__Ljava_lang_Object_2J
(Thread*, object, uintptr_t* arguments)
{
object o = reinterpret_cast<object>(arguments[1]);
int64_t offset; memcpy(&offset, arguments + 2, 8);
return cast<int64_t>(o, offset);
}
extern "C" JNIEXPORT int64_t JNICALL
Avian_sun_misc_Unsafe_getLongVolatile
(Thread* t, object, uintptr_t* arguments)
@ -1666,6 +1676,19 @@ Avian_sun_misc_Unsafe_getObjectVolatile
return value;
}
extern "C" JNIEXPORT void JNICALL
Avian_sun_misc_Unsafe_putObjectVolatile
(Thread* t, object, uintptr_t* arguments)
{
object o = reinterpret_cast<object>(arguments[1]);
int64_t offset; memcpy(&offset, arguments + 2, 8);
object value = reinterpret_cast<object>(arguments[4]);
storeStoreMemoryBarrier();
set(t, o, offset, reinterpret_cast<object>(value));
storeLoadMemoryBarrier();
}
extern "C" JNIEXPORT int64_t JNICALL
Avian_sun_misc_Unsafe_compareAndSwapInt
(Thread*, object, uintptr_t* arguments)
@ -1744,6 +1767,16 @@ Avian_sun_misc_Unsafe_setMemory
memset(reinterpret_cast<int8_t*>(p), v, count);
}
extern "C" JNIEXPORT void JNICALL
Avian_sun_misc_Unsafe_putByte__JB
(Thread*, object, uintptr_t* arguments)
{
int64_t p; memcpy(&p, arguments + 1, 8);
int8_t v = arguments[3];
*reinterpret_cast<int8_t*>(p) = v;
}
extern "C" JNIEXPORT void JNICALL
Avian_sun_misc_Unsafe_putLong__JJ
(Thread*, object, uintptr_t* arguments)
@ -2489,7 +2522,34 @@ EXPORT(JVM_AllocateNewArray)(Thread*, jobject, jclass,
jint) { abort(); }
extern "C" JNIEXPORT jobject JNICALL
EXPORT(JVM_LatestUserDefinedLoader)(Thread*) { abort(); }
EXPORT(JVM_LatestUserDefinedLoader)(Thread* t)
{
ENTER(t, Thread::ActiveState);
class Visitor: public Processor::StackVisitor {
public:
Visitor(Thread* t):
t(t), loader(0)
{ }
virtual bool visit(Processor::StackWalker* walker) {
object loader = classLoader(t, methodClass(t, walker->method()));
if (loader and loader != root(t, Machine::BootLoader)) {
this->loader = loader;
return false;
} else {
return true;
}
}
Thread* t;
object loader;
} v(t);
t->m->processor->walkStack(t, &v);
return makeLocalReference(t, v.loader);
}
extern "C" JNIEXPORT jclass JNICALL
EXPORT(JVM_LoadClass0)(Thread*, jobject, jclass,
@ -3764,7 +3824,10 @@ EXPORT(JVM_SendTo)(jint, char*, int,
int, struct sockaddr*, int) { abort(); }
extern "C" JNIEXPORT jint JNICALL
EXPORT(JVM_SocketAvailable)(jint, jint*) { abort(); }
EXPORT(JVM_SocketAvailable)(jint socket, jint* count)
{
return ioctl(socket, FIONREAD, count) < 0 ? 0 : 1;
}
extern "C" JNIEXPORT jint JNICALL
EXPORT(JVM_GetSockName)(jint socket, struct sockaddr* address,