--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/zero/vm/stubGenerator_zero.cpp	Tue Oct 13 12:04:21 2009 -0700
@@ -0,0 +1,251 @@
+/*
+ * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2007, 2008 Red Hat, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+#include "incls/_precompiled.incl"
+#include "incls/_stubGenerator_zero.cpp.incl"
+
+// Declaration and definition of StubGenerator (no .hpp file).
+// For a more detailed description of the stub routine structure
+// see the comment in stubRoutines.hpp
+
+class StubGenerator: public StubCodeGenerator {
+ private:
+  // The call stub is used to call Java from C
+  static void call_stub(
+    JavaCallWrapper *call_wrapper,
+    intptr_t*        result,
+    BasicType        result_type,
+    methodOop        method,
+    address          entry_point,
+    intptr_t*        parameters,
+    int              parameter_words,
+    TRAPS) {
+    JavaThread *thread = (JavaThread *) THREAD;
+    ZeroStack *stack = thread->zero_stack();
+
+    // Make sure we have no pending exceptions
+    assert(!HAS_PENDING_EXCEPTION, "call_stub called with pending exception");
+
+    // Set up the stack if necessary
+    bool stack_needs_teardown = false;
+    if (stack->needs_setup()) {
+      size_t stack_used = thread->stack_base() - (address) &stack_used;
+      size_t stack_free = thread->stack_size() - stack_used;
+      size_t zero_stack_size = align_size_down(stack_free / 2, wordSize);
+
+      stack->setup(alloca(zero_stack_size), zero_stack_size);
+      stack_needs_teardown = true;
+    }
+
+    // Allocate and initialize our frame
+    thread->push_zero_frame(
+      EntryFrame::build(stack, parameters, parameter_words, call_wrapper));
+
+    // Make the call
+    Interpreter::invoke_method(method, entry_point, THREAD);
+
+    // Store result depending on type
+    if (!HAS_PENDING_EXCEPTION) {
+      switch (result_type) {
+      case T_INT:
+        *(jint *) result = *(jint *) stack->sp();
+        break;
+      case T_LONG:
+        *(jlong *) result = *(jlong *) stack->sp();
+        break;
+      case T_FLOAT:
+        *(jfloat *) result = *(jfloat *) stack->sp();
+        break;
+      case T_DOUBLE:
+        *(jdouble *) result = *(jdouble *) stack->sp();
+        break;
+      case T_OBJECT:
+        *(oop *) result = *(oop *) stack->sp();
+        break;
+      default:
+        ShouldNotReachHere();
+      }
+    }
+
+    // Unwind our frame
+    thread->pop_zero_frame();
+
+    // Tear down the stack if necessary
+    if (stack_needs_teardown)
+      stack->teardown();
+  }
+
+  // These stubs get called from some dumb test routine.
+  // I'll write them properly when they're called from
+  // something that's actually doing something.
+  static void fake_arraycopy_stub(address src, address dst, int count) {
+    assert(count == 0, "huh?");
+  }
+
+  void generate_arraycopy_stubs() {
+    // Call the conjoint generation methods immediately after
+    // the disjoint ones so that short branches from the former
+    // to the latter can be generated.
+    StubRoutines::_jbyte_disjoint_arraycopy  = (address) fake_arraycopy_stub;
+    StubRoutines::_jbyte_arraycopy           = (address) fake_arraycopy_stub;
+
+    StubRoutines::_jshort_disjoint_arraycopy = (address) fake_arraycopy_stub;
+    StubRoutines::_jshort_arraycopy          = (address) fake_arraycopy_stub;
+
+    StubRoutines::_jint_disjoint_arraycopy   = (address) fake_arraycopy_stub;
+    StubRoutines::_jint_arraycopy            = (address) fake_arraycopy_stub;
+
+    StubRoutines::_jlong_disjoint_arraycopy  = (address) fake_arraycopy_stub;
+    StubRoutines::_jlong_arraycopy           = (address) fake_arraycopy_stub;
+
+    StubRoutines::_oop_disjoint_arraycopy    = ShouldNotCallThisStub();
+    StubRoutines::_oop_arraycopy             = ShouldNotCallThisStub();
+
+    StubRoutines::_checkcast_arraycopy       = ShouldNotCallThisStub();
+    StubRoutines::_unsafe_arraycopy          = ShouldNotCallThisStub();
+    StubRoutines::_generic_arraycopy         = ShouldNotCallThisStub();
+
+    // We don't generate specialized code for HeapWord-aligned source
+    // arrays, so just use the code we've already generated
+    StubRoutines::_arrayof_jbyte_disjoint_arraycopy =
+      StubRoutines::_jbyte_disjoint_arraycopy;
+    StubRoutines::_arrayof_jbyte_arraycopy =
+      StubRoutines::_jbyte_arraycopy;
+
+    StubRoutines::_arrayof_jshort_disjoint_arraycopy =
+      StubRoutines::_jshort_disjoint_arraycopy;
+    StubRoutines::_arrayof_jshort_arraycopy =
+      StubRoutines::_jshort_arraycopy;
+
+    StubRoutines::_arrayof_jint_disjoint_arraycopy =
+      StubRoutines::_jint_disjoint_arraycopy;
+    StubRoutines::_arrayof_jint_arraycopy =
+      StubRoutines::_jint_arraycopy;
+
+    StubRoutines::_arrayof_jlong_disjoint_arraycopy =
+      StubRoutines::_jlong_disjoint_arraycopy;
+    StubRoutines::_arrayof_jlong_arraycopy =
+      StubRoutines::_jlong_arraycopy;
+
+    StubRoutines::_arrayof_oop_disjoint_arraycopy =
+      StubRoutines::_oop_disjoint_arraycopy;
+    StubRoutines::_arrayof_oop_arraycopy =
+      StubRoutines::_oop_arraycopy;
+  }
+
+  void generate_initial() {
+    // Generates all stubs and initializes the entry points
+
+    // entry points that exist in all platforms Note: This is code
+    // that could be shared among different platforms - however the
+    // benefit seems to be smaller than the disadvantage of having a
+    // much more complicated generator structure. See also comment in
+    // stubRoutines.hpp.
+
+    StubRoutines::_forward_exception_entry   = ShouldNotCallThisStub();
+    StubRoutines::_call_stub_entry           = (address) call_stub;
+    StubRoutines::_catch_exception_entry     = ShouldNotCallThisStub();
+
+    // atomic calls
+    StubRoutines::_atomic_xchg_entry         = ShouldNotCallThisStub();
+    StubRoutines::_atomic_xchg_ptr_entry     = ShouldNotCallThisStub();
+    StubRoutines::_atomic_cmpxchg_entry      = ShouldNotCallThisStub();
+    StubRoutines::_atomic_cmpxchg_ptr_entry  = ShouldNotCallThisStub();
+    StubRoutines::_atomic_cmpxchg_long_entry = ShouldNotCallThisStub();
+    StubRoutines::_atomic_add_entry          = ShouldNotCallThisStub();
+    StubRoutines::_atomic_add_ptr_entry      = ShouldNotCallThisStub();
+    StubRoutines::_fence_entry               = ShouldNotCallThisStub();
+
+    // amd64 does this here, sparc does it in generate_all()
+    StubRoutines::_handler_for_unsafe_access_entry =
+      ShouldNotCallThisStub();
+  }
+
+  void generate_all() {
+    // Generates all stubs and initializes the entry points
+
+    // These entry points require SharedInfo::stack0 to be set up in
+    // non-core builds and need to be relocatable, so they each
+    // fabricate a RuntimeStub internally.
+    StubRoutines::_throw_AbstractMethodError_entry =
+      ShouldNotCallThisStub();
+
+    StubRoutines::_throw_ArithmeticException_entry =
+      ShouldNotCallThisStub();
+
+    StubRoutines::_throw_NullPointerException_entry =
+      ShouldNotCallThisStub();
+
+    StubRoutines::_throw_NullPointerException_at_call_entry =
+      ShouldNotCallThisStub();
+
+    StubRoutines::_throw_StackOverflowError_entry =
+      ShouldNotCallThisStub();
+
+    // support for verify_oop (must happen after universe_init)
+    StubRoutines::_verify_oop_subroutine_entry =
+      ShouldNotCallThisStub();
+
+    // arraycopy stubs used by compilers
+    generate_arraycopy_stubs();
+  }
+
+ public:
+  StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) {
+    if (all) {
+      generate_all();
+    } else {
+      generate_initial();
+    }
+  }
+};
+
+void StubGenerator_generate(CodeBuffer* code, bool all) {
+  StubGenerator g(code, all);
+}
+
+EntryFrame *EntryFrame::build(ZeroStack*       stack,
+                              const intptr_t*  parameters,
+                              int              parameter_words,
+                              JavaCallWrapper* call_wrapper) {
+  if (header_words + parameter_words > stack->available_words()) {
+    Unimplemented();
+  }
+
+  stack->push(0); // next_frame, filled in later
+  intptr_t *fp = stack->sp();
+  assert(fp - stack->sp() == next_frame_off, "should be");
+
+  stack->push(ENTRY_FRAME);
+  assert(fp - stack->sp() == frame_type_off, "should be");
+
+  stack->push((intptr_t) call_wrapper);
+  assert(fp - stack->sp() == call_wrapper_off, "should be");
+
+  for (int i = 0; i < parameter_words; i++)
+    stack->push(parameters[i]);
+
+  return (EntryFrame *) fp;
+}