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// natVMStackWalker.cc
/* Copyright (C) 2006 Free Software Foundation
This file is part of libgcj.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
#include <config.h>
#include <platform.h>
#include <gcj/cni.h>
#include <jvm.h>
#include <java-stack.h>
#include <gnu/classpath/VMStackWalker.h>
#include <gnu/gcj/RawData.h>
#include <java/lang/ClassLoader.h>
#include <java/lang/Class.h>
JArray<jclass> *
gnu::classpath::VMStackWalker::getClassContext(void)
{
_Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
JArray<jclass> *result = _Jv_StackTrace::GetStackWalkerStack ();
// Prevent GetStackWalkerStack() from being sibcalled.
__asm__ __volatile__ ("" : : "g" (result));
return result;
}
jclass
gnu::classpath::VMStackWalker::getCallingClass(void)
{
_Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
return _Jv_StackTrace::GetStackWalkerCallingClass ();
}
jclass
gnu::classpath::VMStackWalker::getCallingClass(::gnu::gcj::RawData *pc)
{
_Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
void *f = _Unwind_FindEnclosingFunction (pc);
// FIXME: it might well be a good idea to cache pc values here in
// order to avoid repeated invocations of
// _Unwind_FindEnclosingFunction, which is quite expensive. On the
// other hand, which not simply write a caching version of
// _Unwind_FindEnclosingFunction itself? That would probably be
// worthwhile.
_Jv_StackTrace::UpdateNCodeMap ();
jclass klass = (jclass) _Jv_StackTrace::ncodeMap->get ((jobject) f);
// If the caller is a compiled frame and the caller of the caller
// is an interpreted frame then klass will be null and we need to
// unwind the stack.
if (klass == NULL)
klass = _Jv_StackTrace::GetStackWalkerCallingClass ();
return klass;
}
::java::lang::ClassLoader *
gnu::classpath::VMStackWalker::getClassLoader(::java::lang::Class *c)
{
_Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
return c->getClassLoaderInternal ();
}
::java::lang::ClassLoader *
gnu::classpath::VMStackWalker::getCallingClassLoader(void)
{
_Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
return
_Jv_StackTrace::GetStackWalkerCallingClass ()->getClassLoaderInternal ();
}
::java::lang::ClassLoader *
gnu::classpath::VMStackWalker::getCallingClassLoader(::gnu::gcj::RawData *pc)
{
_Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
return getCallingClass (pc)->getClassLoaderInternal ();
}
::java::lang::ClassLoader *
gnu::classpath::VMStackWalker::firstNonNullClassLoader(void)
{
_Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
return _Jv_StackTrace::GetStackWalkerFirstNonNullLoader ();
}
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