}
#endif /* DIRECT_THREADED */
-// This function exists so that the stack-tracing code can find the
-// boundaries of the interpreter.
-void
-_Jv_StartOfInterpreter (void)
-{
-}
+// These exist so that the stack-tracing code can find the boundaries
+// of the interpreter.
+void *_Jv_StartOfInterpreter;
+void *_Jv_EndOfInterpreter;
+extern "C" void *_Unwind_FindEnclosingFunction (void *pc);
void
_Jv_InterpMethod::run (void *retp, ffi_raw *args)
{
using namespace java::lang::reflect;
+ // Record the address of the start of this member function in
+ // _Jv_StartOfInterpreter. Such a write to a global variable
+ // without acquiring a lock is correct iff reads and writes of words
+ // in memory are atomic, but Java requires that anyway.
+ foo:
+ if (_Jv_StartOfInterpreter == NULL)
+ _Jv_StartOfInterpreter = _Unwind_FindEnclosingFunction (&&foo);
+
// FRAME_DESC registers this particular invocation as the top-most
// interpreter frame. This lets the stack tracing code (for
// Throwable) print information about the method being interpreted
}
}
-// This function exists so that the stack-tracing code can find the
-// boundaries of the interpreter.
-void
-_Jv_EndOfInterpreter (void)
-{
-}
-
static void
throw_internal_error (char *msg)
{