--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/zero/vm/frame_zero.cpp	Tue Oct 13 12:04:21 2009 -0700
@@ -0,0 +1,414 @@
+/*
+ * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2007, 2008, 2009 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/_frame_zero.cpp.incl"
+
+#ifdef ASSERT
+void RegisterMap::check_location_valid() {
+  ShouldNotCallThis();
+}
+#endif
+
+bool frame::is_interpreted_frame() const {
+  return zeroframe()->is_interpreter_frame();
+}
+
+bool frame::is_fake_stub_frame() const {
+  return zeroframe()->is_fake_stub_frame();
+}
+
+frame frame::sender_for_entry_frame(RegisterMap *map) const {
+  assert(map != NULL, "map must be set");
+  assert(!entry_frame_is_first(), "next Java fp must be non zero");
+  assert(entry_frame_call_wrapper()->anchor()->last_Java_sp() == sender_sp(),
+         "sender should be next Java frame");
+  map->clear();
+  assert(map->include_argument_oops(), "should be set by clear");
+  return frame(sender_sp(), sp() + 1);
+}
+
+frame frame::sender_for_interpreter_frame(RegisterMap *map) const {
+  return frame(sender_sp(), sp() + 1);
+}
+
+frame frame::sender_for_compiled_frame(RegisterMap *map) const {
+  return frame(sender_sp(), sp() + 1);
+}
+
+frame frame::sender_for_fake_stub_frame(RegisterMap *map) const {
+  return frame(sender_sp(), sp() + 1);
+}
+
+frame frame::sender(RegisterMap* map) const {
+  // Default is not to follow arguments; the various
+  // sender_for_xxx methods update this accordingly.
+  map->set_include_argument_oops(false);
+
+  if (is_entry_frame())
+    return sender_for_entry_frame(map);
+
+  if (is_interpreted_frame())
+    return sender_for_interpreter_frame(map);
+
+  if (is_compiled_frame())
+    return sender_for_compiled_frame(map);
+
+  if (is_fake_stub_frame())
+    return sender_for_fake_stub_frame(map);
+
+  ShouldNotReachHere();
+}
+
+#ifdef CC_INTERP
+BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
+  return get_interpreterState()->monitor_base();
+}
+
+BasicObjectLock* frame::interpreter_frame_monitor_end() const {
+  return (BasicObjectLock*) get_interpreterState()->stack_base();
+}
+#endif // CC_INTERP
+
+void frame::patch_pc(Thread* thread, address pc) {
+  // We borrow this call to set the thread pointer in the interpreter
+  // state; the hook to set up deoptimized frames isn't supplied it.
+  assert(pc == NULL, "should be");
+  get_interpreterState()->set_thread((JavaThread *) thread);
+}
+
+bool frame::safe_for_sender(JavaThread *thread) {
+  ShouldNotCallThis();
+}
+
+void frame::pd_gc_epilog() {
+}
+
+bool frame::is_interpreted_frame_valid(JavaThread *thread) const {
+  ShouldNotCallThis();
+}
+
+BasicType frame::interpreter_frame_result(oop* oop_result,
+                                          jvalue* value_result) {
+  assert(is_interpreted_frame(), "interpreted frame expected");
+  methodOop method = interpreter_frame_method();
+  BasicType type = method->result_type();
+  intptr_t* tos_addr = (intptr_t *) interpreter_frame_tos_address();
+  oop obj;
+
+  switch (type) {
+  case T_VOID:
+    break;
+  case T_BOOLEAN:
+    value_result->z = *(jboolean *) tos_addr;
+    break;
+  case T_BYTE:
+    value_result->b = *(jbyte *) tos_addr;
+    break;
+  case T_CHAR:
+    value_result->c = *(jchar *) tos_addr;
+    break;
+  case T_SHORT:
+    value_result->s = *(jshort *) tos_addr;
+    break;
+  case T_INT:
+    value_result->i = *(jint *) tos_addr;
+    break;
+  case T_LONG:
+    value_result->j = *(jlong *) tos_addr;
+    break;
+  case T_FLOAT:
+    value_result->f = *(jfloat *) tos_addr;
+    break;
+  case T_DOUBLE:
+    value_result->d = *(jdouble *) tos_addr;
+    break;
+
+  case T_OBJECT:
+  case T_ARRAY:
+    if (method->is_native()) {
+      obj = get_interpreterState()->oop_temp();
+    }
+    else {
+      oop* obj_p = (oop *) tos_addr;
+      obj = (obj_p == NULL) ? (oop) NULL : *obj_p;
+    }
+    assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
+    *oop_result = obj;
+    break;
+
+  default:
+    ShouldNotReachHere();
+  }
+
+  return type;
+}
+
+int frame::frame_size(RegisterMap* map) const {
+#ifdef PRODUCT
+  ShouldNotCallThis();
+#else
+  return 0; // make javaVFrame::print_value work
+#endif // PRODUCT
+}
+
+intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
+  int index = (Interpreter::expr_offset_in_bytes(offset) / wordSize);
+  return &interpreter_frame_tos_address()[index];
+}
+
+void frame::zero_print_on_error(int           frame_index,
+                                outputStream* st,
+                                char*         buf,
+                                int           buflen) const {
+  // Divide the buffer between the field and the value
+  buflen >>= 1;
+  char *fieldbuf = buf;
+  char *valuebuf = buf + buflen;
+
+  // Print each word of the frame
+  for (intptr_t *addr = fp(); addr <= sp(); addr++) {
+    int offset = sp() - addr;
+
+    // Fill in default values, then try and improve them
+    snprintf(fieldbuf, buflen, "word[%d]", offset);
+    snprintf(valuebuf, buflen, PTR_FORMAT, *addr);
+    zeroframe()->identify_word(frame_index, offset, fieldbuf, valuebuf, buflen);
+    fieldbuf[buflen - 1] = '\0';
+    valuebuf[buflen - 1] = '\0';
+
+    // Print the result
+    st->print_cr(" " PTR_FORMAT ": %-21s = %s", addr, fieldbuf, valuebuf);
+  }
+}
+
+void ZeroFrame::identify_word(int   frame_index,
+                              int   offset,
+                              char* fieldbuf,
+                              char* valuebuf,
+                              int   buflen) const {
+  switch (offset) {
+  case next_frame_off:
+    strncpy(fieldbuf, "next_frame", buflen);
+    break;
+
+  case frame_type_off:
+    strncpy(fieldbuf, "frame_type", buflen);
+    if (is_entry_frame())
+      strncpy(valuebuf, "ENTRY_FRAME", buflen);
+    else if (is_interpreter_frame())
+      strncpy(valuebuf, "INTERPRETER_FRAME", buflen);
+    else if (is_shark_frame())
+      strncpy(valuebuf, "SHARK_FRAME", buflen);
+    else if (is_fake_stub_frame())
+      strncpy(valuebuf, "FAKE_STUB_FRAME", buflen);
+    break;
+
+  default:
+    if (is_entry_frame()) {
+      as_entry_frame()->identify_word(
+        frame_index, offset, fieldbuf, valuebuf, buflen);
+    }
+    else if (is_interpreter_frame()) {
+      as_interpreter_frame()->identify_word(
+        frame_index, offset, fieldbuf, valuebuf, buflen);
+    }
+    else if (is_shark_frame()) {
+      as_shark_frame()->identify_word(
+        frame_index, offset, fieldbuf, valuebuf, buflen);
+    }
+    else if (is_fake_stub_frame()) {
+      as_fake_stub_frame()->identify_word(
+        frame_index, offset, fieldbuf, valuebuf, buflen);
+    }
+  }
+}
+
+void EntryFrame::identify_word(int   frame_index,
+                               int   offset,
+                               char* fieldbuf,
+                               char* valuebuf,
+                               int   buflen) const {
+  switch (offset) {
+  case call_wrapper_off:
+    strncpy(fieldbuf, "call_wrapper", buflen);
+    break;
+
+  default:
+    snprintf(fieldbuf, buflen, "local[%d]", offset - 3);
+  }
+}
+
+void InterpreterFrame::identify_word(int   frame_index,
+                                     int   offset,
+                                     char* fieldbuf,
+                                     char* valuebuf,
+                                     int   buflen) const {
+  interpreterState istate = interpreter_state();
+  bool is_valid = istate->self_link() == istate;
+  intptr_t *addr = addr_of_word(offset);
+
+  // Fixed part
+  if (addr >= (intptr_t *) istate) {
+    const char *field = istate->name_of_field_at_address((address) addr);
+    if (field) {
+      if (is_valid && !strcmp(field, "_method")) {
+        istate->method()->name_and_sig_as_C_string(valuebuf, buflen);
+      }
+      else if (is_valid && !strcmp(field, "_bcp") && istate->bcp()) {
+        snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
+                 (intptr_t) istate->bcp(),
+                 istate->method()->bci_from(istate->bcp()));
+      }
+      snprintf(fieldbuf, buflen, "%sistate->%s",
+               field[strlen(field) - 1] == ')' ? "(": "", field);
+    }
+    else if (addr == (intptr_t *) istate) {
+      strncpy(fieldbuf, "(vtable for istate)", buflen);
+    }
+    return;
+  }
+
+  // Variable part
+  if (!is_valid)
+    return;
+
+  // JNI stuff
+  if (istate->method()->is_native() && addr < istate->stack_base()) {
+    address hA = istate->method()->signature_handler();
+    if (hA != NULL) {
+      if (hA != (address) InterpreterRuntime::slow_signature_handler) {
+        InterpreterRuntime::SignatureHandler *handler =
+          InterpreterRuntime::SignatureHandler::from_handlerAddr(hA);
+
+        intptr_t *params = istate->stack_base() - handler->argument_count();
+        if (addr >= params) {
+          int param = addr - params;
+          const char *desc = "";
+          if (param == 0)
+            desc = " (JNIEnv)";
+          else if (param == 1) {
+            if (istate->method()->is_static())
+              desc = " (mirror)";
+            else
+              desc = " (this)";
+          }
+          snprintf(fieldbuf, buflen, "parameter[%d]%s", param, desc);
+          return;
+        }
+
+        for (int i = 0; i < handler->argument_count(); i++) {
+          if (params[i] == (intptr_t) addr) {
+            snprintf(fieldbuf, buflen, "unboxed parameter[%d]", i);
+            return;
+          }
+        }
+      }
+    }
+    return;
+  }
+
+  // Monitors and stack
+  identify_vp_word(frame_index, addr,
+                   (intptr_t *) istate->monitor_base(),
+                   istate->stack_base(),
+                   fieldbuf, buflen);
+}
+
+void SharkFrame::identify_word(int   frame_index,
+                               int   offset,
+                               char* fieldbuf,
+                               char* valuebuf,
+                               int   buflen) const {
+  // Fixed part
+  switch (offset) {
+  case pc_off:
+    strncpy(fieldbuf, "pc", buflen);
+    if (method()->is_oop()) {
+      nmethod *code = method()->code();
+      if (code && code->pc_desc_at(pc())) {
+        SimpleScopeDesc ssd(code, pc());
+        snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
+                 (intptr_t) pc(), ssd.bci());
+      }
+    }
+    return;
+
+  case unextended_sp_off:
+    strncpy(fieldbuf, "unextended_sp", buflen);
+    return;
+
+  case method_off:
+    strncpy(fieldbuf, "method", buflen);
+    if (method()->is_oop()) {
+      method()->name_and_sig_as_C_string(valuebuf, buflen);
+    }
+    return;
+
+  case oop_tmp_off:
+    strncpy(fieldbuf, "oop_tmp", buflen);
+    return;
+  }
+
+  // Variable part
+  if (method()->is_oop()) {
+    identify_vp_word(frame_index, addr_of_word(offset),
+                     addr_of_word(header_words + 1),
+                     unextended_sp() + method()->max_stack(),
+                     fieldbuf, buflen);
+  }
+}
+
+void ZeroFrame::identify_vp_word(int       frame_index,
+                                 intptr_t* addr,
+                                 intptr_t* monitor_base,
+                                 intptr_t* stack_base,
+                                 char*     fieldbuf,
+                                 int       buflen) const {
+  // Monitors
+  if (addr >= stack_base && addr < monitor_base) {
+    int monitor_size = frame::interpreter_frame_monitor_size();
+    int last_index = (monitor_base - stack_base) / monitor_size - 1;
+    int index = last_index - (addr - stack_base) / monitor_size;
+    intptr_t monitor = (intptr_t) (
+      (BasicObjectLock *) monitor_base - 1 - index);
+    intptr_t offset = (intptr_t) addr - monitor;
+
+    if (offset == BasicObjectLock::obj_offset_in_bytes())
+      snprintf(fieldbuf, buflen, "monitor[%d]->_obj", index);
+    else if (offset ==  BasicObjectLock::lock_offset_in_bytes())
+      snprintf(fieldbuf, buflen, "monitor[%d]->_lock", index);
+
+    return;
+  }
+
+  // Expression stack
+  if (addr < stack_base) {
+    snprintf(fieldbuf, buflen, "%s[%d]",
+             frame_index == 0 ? "stack_word" : "local",
+             (int) (stack_base - addr - 1));
+    return;
+  }
+}