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implement more JVM_* methods

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This commit is contained in:
Joel Dice 2010-09-10 17:47:23 -06:00
parent ea2509666a
commit 66280458c8
1 changed files with 69 additions and 5 deletions
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74
src/classpath-openjdk.cpp
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@ -10,6 +10,7 @@
#include "machine.h"
#include "classpath-common.h"
#include "util.h"
// todo: move platform-specific stuff into system.h and implementations
@ -711,7 +712,10 @@ JVM_CurrentTimeMillis(Thread* t, jclass)
}
extern "C" JNIEXPORT jlong JNICALL
JVM_NanoTime(Thread*, jclass) { abort(); }
JVM_NanoTime(Thread* t, jclass)
{
return t->m->system->now() * 1000 * 1000;
}
extern "C" JNIEXPORT void JNICALL
JVM_ArrayCopy(Thread* t, jclass, jobject src, jint srcOffset, jobject dst,
@ -1030,7 +1034,27 @@ extern "C" JNIEXPORT jobject JNICALL
JVM_CurrentClassLoader(Thread*) { abort(); }
extern "C" JNIEXPORT jobjectArray JNICALL
JVM_GetClassContext(Thread*) { abort(); }
JVM_GetClassContext(Thread* t)
{
ENTER(t, Thread::ActiveState);
object trace = getTrace(t, 1);
PROTECT(t, trace);
object context = makeObjectArray
(t, t->m->loader, arrayBody(t, t->m->types, Machine::JclassType),
arrayLength(t, trace));
PROTECT(t, context);
for (unsigned i = 0; i < arrayLength(t, trace); ++i) {
object c = getJClass
(t, methodClass(t, traceElementMethod(t, arrayBody(t, trace, i))));
set(t, context, ArrayBody + (i * BytesPerWord), c);
}
return makeLocalReference(t, context);
}
extern "C" JNIEXPORT jint JNICALL
JVM_ClassDepth(Thread*, jstring) { abort(); }
@ -1196,7 +1220,32 @@ JVM_FindClassFromClass(Thread*, const char*, jboolean,
jclass) { abort(); }
extern "C" JNIEXPORT jclass JNICALL
JVM_FindLoadedClass(Thread*, jobject, jstring) { abort(); }
JVM_FindLoadedClass(Thread* t, jobject loader, jstring name)
{
ENTER(t, Thread::ActiveState);
ACQUIRE(t, t->m->classLock);
object spec = makeByteArray(t, stringLength(t, *name) + 1);
{ char* s = reinterpret_cast<char*>(&byteArrayBody(t, spec, 0));
stringChars(t, *name, s);
replace('.', '/', s);
}
object c;
if (loader == 0 or *loader == t->m->loader) {
c = findLoadedSystemClass(t, spec);
} else {
object map = classLoaderMap(t, *loader);
if (map) {
c = hashMapFind(t, map, spec, byteArrayHash, byteArrayEqual);
} else {
c = 0;
}
}
return c ? makeLocalReference(t, getJClass(t, c)) : 0;
}
extern "C" JNIEXPORT jclass JNICALL
JVM_DefineClass(Thread*, const char*, jobject, const jbyte*,
@ -1790,7 +1839,10 @@ extern "C" JNIEXPORT jobject JNICALL
JVM_AssertionStatusDirectives(Thread*, jclass) { abort(); }
extern "C" JNIEXPORT jboolean JNICALL
JVM_SupportsCX8(void) { abort(); }
JVM_SupportsCX8()
{
return true;
}
extern "C" JNIEXPORT const char* JNICALL
JVM_GetClassNameUTF(Thread*, jclass) { abort(); }
@ -1924,7 +1976,19 @@ JVM_Write(jint fd, char* src, jint length)
}
extern "C" JNIEXPORT jint JNICALL
JVM_Available(jint, jlong*) { abort(); }
JVM_Available(jint fd, jlong* result)
{
int current = LSEEK(fd, 0, SEEK_CUR);
if (current == -1) return 0;
int end = LSEEK(fd, 0, SEEK_END);
if (end == -1) return 0;
if (LSEEK(fd, current, SEEK_SET) == -1) return 0;
*result = end - current;
return 1;
}
extern "C" JNIEXPORT jlong JNICALL
JVM_Lseek(jint fd, jlong offset, jint start)