--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/ppc/vm/frame_ppc.cpp Fri Aug 02 16:46:45 2013 +0200
@@ -0,0 +1,306 @@
+/*
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2013 SAP AG. All rights reserved.
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "interpreter/interpreter.hpp"
+#include "memory/resourceArea.hpp"
+#include "oops/markOop.hpp"
+#include "oops/method.hpp"
+#include "oops/oop.inline.hpp"
+#include "runtime/frame.inline.hpp"
+#include "runtime/handles.inline.hpp"
+#include "runtime/javaCalls.hpp"
+#include "runtime/monitorChunk.hpp"
+#include "runtime/signature.hpp"
+#include "runtime/stubCodeGenerator.hpp"
+#include "runtime/stubRoutines.hpp"
+#include "vmreg_ppc.inline.hpp"
+#ifdef COMPILER1
+#include "c1/c1_Runtime1.hpp"
+#include "runtime/vframeArray.hpp"
+#endif
+
+#ifndef CC_INTERP
+#error "CC_INTERP must be defined on PPC64"
+#endif
+
+#ifdef ASSERT
+void RegisterMap::check_location_valid() {
+}
+#endif // ASSERT
+
+bool frame::safe_for_sender(JavaThread *thread) {
+ bool safe = false;
+ address cursp = (address)sp();
+ address curfp = (address)fp();
+ if ((cursp != NULL && curfp != NULL &&
+ (cursp <= thread->stack_base() && cursp >= thread->stack_base() - thread->stack_size())) &&
+ (curfp <= thread->stack_base() && curfp >= thread->stack_base() - thread->stack_size())) {
+ safe = true;
+ }
+ return safe;
+}
+
+bool frame::is_interpreted_frame() const {
+ return Interpreter::contains(pc());
+}
+
+frame frame::sender_for_entry_frame(RegisterMap *map) const {
+ assert(map != NULL, "map must be set");
+ // Java frame called from C; skip all C frames and return top C
+ // frame of that chunk as the sender.
+ JavaFrameAnchor* jfa = entry_frame_call_wrapper()->anchor();
+ assert(!entry_frame_is_first(), "next Java fp must be non zero");
+ assert(jfa->last_Java_sp() > _sp, "must be above this frame on stack");
+ map->clear();
+ assert(map->include_argument_oops(), "should be set by clear");
+
+ if (jfa->last_Java_pc() != NULL) {
+ frame fr(jfa->last_Java_sp(), jfa->last_Java_pc());
+ return fr;
+ }
+ // Last_java_pc is not set, if we come here from compiled code. The
+ // constructor retrieves the PC from the stack.
+ frame fr(jfa->last_Java_sp());
+ return fr;
+}
+
+frame frame::sender_for_interpreter_frame(RegisterMap *map) const {
+ // Pass callers initial_caller_sp as unextended_sp.
+ return frame(sender_sp(), sender_pc(), (intptr_t*)((parent_ijava_frame_abi *)callers_abi())->initial_caller_sp);
+}
+
+frame frame::sender_for_compiled_frame(RegisterMap *map) const {
+ assert(map != NULL, "map must be set");
+
+ // Frame owned by compiler.
+ address pc = *compiled_sender_pc_addr(_cb);
+ frame caller(compiled_sender_sp(_cb), pc);
+
+ // Now adjust the map.
+
+ // Get the rest.
+ if (map->update_map()) {
+ // Tell GC to use argument oopmaps for some runtime stubs that need it.
+ map->set_include_argument_oops(_cb->caller_must_gc_arguments(map->thread()));
+ if (_cb->oop_maps() != NULL) {
+ OopMapSet::update_register_map(this, map);
+ }
+ }
+
+ return caller;
+}
+
+intptr_t* frame::compiled_sender_sp(CodeBlob* cb) const {
+ return sender_sp();
+}
+
+address* frame::compiled_sender_pc_addr(CodeBlob* cb) const {
+ return sender_pc_addr();
+}
+
+frame frame::sender(RegisterMap* map) const {
+ // Default is we do have to follow them. The sender_for_xxx will
+ // update it 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);
+ assert(_cb == CodeCache::find_blob(pc()),"Must be the same");
+
+ if (_cb != NULL) {
+ return sender_for_compiled_frame(map);
+ }
+ // Must be native-compiled frame, i.e. the marshaling code for native
+ // methods that exists in the core system.
+ return frame(sender_sp(), sender_pc());
+}
+
+void frame::patch_pc(Thread* thread, address pc) {
+ if (TracePcPatching) {
+ tty->print_cr("patch_pc at address " PTR_FORMAT " [" PTR_FORMAT " -> " PTR_FORMAT "]",
+ &((address*) _sp)[-1], ((address*) _sp)[-1], pc);
+ }
+ own_abi()->lr = (uint64_t)pc;
+ _cb = CodeCache::find_blob(pc);
+ if (_cb != NULL && _cb->is_nmethod() && ((nmethod*)_cb)->is_deopt_pc(_pc)) {
+ address orig = (((nmethod*)_cb)->get_original_pc(this));
+ assert(orig == _pc, "expected original to be stored before patching");
+ _deopt_state = is_deoptimized;
+ // Leave _pc as is.
+ } else {
+ _deopt_state = not_deoptimized;
+ _pc = pc;
+ }
+}
+
+void frame::pd_gc_epilog() {
+ if (is_interpreted_frame()) {
+ // Set constant pool cache entry for interpreter.
+ Method* m = interpreter_frame_method();
+
+ *interpreter_frame_cpoolcache_addr() = m->constants()->cache();
+ }
+}
+
+bool frame::is_interpreted_frame_valid(JavaThread* thread) const {
+ // Is there anything to do?
+ assert(is_interpreted_frame(), "Not an interpreted frame");
+ return true;
+}
+
+BasicType frame::interpreter_frame_result(oop* oop_result, jvalue* value_result) {
+ assert(is_interpreted_frame(), "interpreted frame expected");
+ Method* method = interpreter_frame_method();
+ BasicType type = method->result_type();
+
+#ifdef CC_INTERP
+ if (method->is_native()) {
+ // Prior to calling into the runtime to notify the method exit the possible
+ // result value is saved into the interpreter frame.
+ interpreterState istate = get_interpreterState();
+ address lresult = (address)istate + in_bytes(BytecodeInterpreter::native_lresult_offset());
+ address fresult = (address)istate + in_bytes(BytecodeInterpreter::native_fresult_offset());
+
+ switch (method->result_type()) {
+ case T_OBJECT:
+ case T_ARRAY: {
+ oop* obj_p = *(oop**)lresult;
+ oop obj = (obj_p == NULL) ? NULL : *obj_p;
+ assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
+ *oop_result = obj;
+ break;
+ }
+ // We use std/stfd to store the values.
+ case T_BOOLEAN : value_result->z = (jboolean) *(unsigned long*)lresult; break;
+ case T_INT : value_result->i = (jint) *(long*)lresult; break;
+ case T_CHAR : value_result->c = (jchar) *(unsigned long*)lresult; break;
+ case T_SHORT : value_result->s = (jshort) *(long*)lresult; break;
+ case T_BYTE : value_result->z = (jbyte) *(long*)lresult; break;
+ case T_LONG : value_result->j = (jlong) *(long*)lresult; break;
+ case T_FLOAT : value_result->f = (jfloat) *(double*)fresult; break;
+ case T_DOUBLE : value_result->d = (jdouble) *(double*)fresult; break;
+ case T_VOID : /* Nothing to do */ break;
+ default : ShouldNotReachHere();
+ }
+ } else {
+ intptr_t* tos_addr = interpreter_frame_tos_address();
+ switch (method->result_type()) {
+ case T_OBJECT:
+ case T_ARRAY: {
+ oop obj = *(oop*)tos_addr;
+ assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
+ *oop_result = obj;
+ }
+ case T_BOOLEAN : value_result->z = (jboolean) *(jint*)tos_addr; break;
+ case T_BYTE : value_result->b = (jbyte) *(jint*)tos_addr; break;
+ case T_CHAR : value_result->c = (jchar) *(jint*)tos_addr; break;
+ case T_SHORT : value_result->s = (jshort) *(jint*)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_VOID : /* Nothing to do */ break;
+ default : ShouldNotReachHere();
+ }
+ }
+#else
+ Unimplemented();
+#endif
+ return type;
+}
+
+#ifndef PRODUCT
+
+void frame::describe_pd(FrameValues& values, int frame_no) {
+ if (is_interpreted_frame()) {
+#ifdef CC_INTERP
+ interpreterState istate = get_interpreterState();
+ values.describe(frame_no, (intptr_t*)istate, "istate");
+ values.describe(frame_no, (intptr_t*)&(istate->_thread), " thread");
+ values.describe(frame_no, (intptr_t*)&(istate->_bcp), " bcp");
+ values.describe(frame_no, (intptr_t*)&(istate->_locals), " locals");
+ values.describe(frame_no, (intptr_t*)&(istate->_constants), " constants");
+ values.describe(frame_no, (intptr_t*)&(istate->_method), err_msg(" method = %s", istate->_method->name_and_sig_as_C_string()));
+ values.describe(frame_no, (intptr_t*)&(istate->_mdx), " mdx");
+ values.describe(frame_no, (intptr_t*)&(istate->_stack), " stack");
+ values.describe(frame_no, (intptr_t*)&(istate->_msg), err_msg(" msg = %s", BytecodeInterpreter::C_msg(istate->_msg)));
+ values.describe(frame_no, (intptr_t*)&(istate->_result), " result");
+ values.describe(frame_no, (intptr_t*)&(istate->_prev_link), " prev_link");
+ values.describe(frame_no, (intptr_t*)&(istate->_oop_temp), " oop_temp");
+ values.describe(frame_no, (intptr_t*)&(istate->_stack_base), " stack_base");
+ values.describe(frame_no, (intptr_t*)&(istate->_stack_limit), " stack_limit");
+ values.describe(frame_no, (intptr_t*)&(istate->_monitor_base), " monitor_base");
+ values.describe(frame_no, (intptr_t*)&(istate->_frame_bottom), " frame_bottom");
+ values.describe(frame_no, (intptr_t*)&(istate->_last_Java_pc), " last_Java_pc");
+ values.describe(frame_no, (intptr_t*)&(istate->_last_Java_fp), " last_Java_fp");
+ values.describe(frame_no, (intptr_t*)&(istate->_last_Java_sp), " last_Java_sp");
+ values.describe(frame_no, (intptr_t*)&(istate->_self_link), " self_link");
+ values.describe(frame_no, (intptr_t*)&(istate->_native_fresult), " native_fresult");
+ values.describe(frame_no, (intptr_t*)&(istate->_native_lresult), " native_lresult");
+#else
+ Unimplemented();
+#endif
+ }
+}
+#endif
+
+void frame::adjust_unextended_sp() {
+ // If we are returning to a compiled MethodHandle call site, the
+ // saved_fp will in fact be a saved value of the unextended SP. The
+ // simplest way to tell whether we are returning to such a call site
+ // is as follows:
+
+ if (is_compiled_frame() && false /*is_at_mh_callsite()*/) { // TODO PPC port
+ // If the sender PC is a deoptimization point, get the original
+ // PC. For MethodHandle call site the unextended_sp is stored in
+ // saved_fp.
+ _unextended_sp = _fp - _cb->frame_size();
+
+#ifdef ASSERT
+ nmethod *sender_nm = _cb->as_nmethod_or_null();
+ assert(sender_nm && *_sp == *_unextended_sp, "backlink changed");
+
+ intptr_t* sp = _unextended_sp; // check if stack can be walked from here
+ for (int x = 0; x < 5; ++x) { // check up to a couple of backlinks
+ intptr_t* prev_sp = *(intptr_t**)sp;
+ if (prev_sp == 0) break; // end of stack
+ assert(prev_sp>sp, "broken stack");
+ sp = prev_sp;
+ }
+
+ if (sender_nm->is_deopt_mh_entry(_pc)) { // checks for deoptimization
+ address original_pc = sender_nm->get_original_pc(this);
+ assert(sender_nm->insts_contains(original_pc), "original PC must be in nmethod");
+ assert(sender_nm->is_method_handle_return(original_pc), "must be");
+ }
+#endif
+ }
+}
+
+intptr_t *frame::initial_deoptimization_info() {
+ // unused... but returns fp() to minimize changes introduced by 7087445
+ return fp();
+}