--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/aarch64/vm/frame_aarch64.hpp Tue Jan 20 11:34:17 2015 -0800
@@ -0,0 +1,216 @@
+/*
+ * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, Red Hat Inc. 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.
+ *
+ */
+
+#ifndef CPU_AARCH64_VM_FRAME_AARCH64_HPP
+#define CPU_AARCH64_VM_FRAME_AARCH64_HPP
+
+#include "runtime/synchronizer.hpp"
+#include "utilities/top.hpp"
+
+// A frame represents a physical stack frame (an activation). Frames can be
+// C or Java frames, and the Java frames can be interpreted or compiled.
+// In contrast, vframes represent source-level activations, so that one physical frame
+// can correspond to multiple source level frames because of inlining.
+// A frame is comprised of {pc, fp, sp}
+// ------------------------------ Asm interpreter ----------------------------------------
+// Layout of asm interpreter frame:
+// [expression stack ] * <- sp
+
+// [monitors[0] ] \
+// ... | monitor block size = k
+// [monitors[k-1] ] /
+// [frame initial esp ] ( == &monitors[0], initially here) initial_sp_offset
+// [byte code index/pointr] = bcx() bcx_offset
+
+// [pointer to locals ] = locals() locals_offset
+// [constant pool cache ] = cache() cache_offset
+
+// [methodData ] = mdp() mdx_offset
+// [methodOop ] = method() method_offset
+
+// [last esp ] = last_sp() last_sp_offset
+// [old stack pointer ] (sender_sp) sender_sp_offset
+
+// [old frame pointer ] <- fp = link()
+// [return pc ]
+
+// [last sp ]
+// [oop temp ] (only for native calls)
+
+// [locals and parameters ]
+// <- sender sp
+// ------------------------------ Asm interpreter ----------------------------------------
+
+// ------------------------------ C++ interpreter ----------------------------------------
+//
+// Layout of C++ interpreter frame: (While executing in BytecodeInterpreter::run)
+//
+// <- SP (current esp/rsp)
+// [local variables ] BytecodeInterpreter::run local variables
+// ... BytecodeInterpreter::run local variables
+// [local variables ] BytecodeInterpreter::run local variables
+// [old frame pointer ] fp [ BytecodeInterpreter::run's ebp/rbp ]
+// [return pc ] (return to frame manager)
+// [interpreter_state* ] (arg to BytecodeInterpreter::run) --------------
+// [expression stack ] <- last_Java_sp |
+// [... ] * <- interpreter_state.stack |
+// [expression stack ] * <- interpreter_state.stack_base |
+// [monitors ] \ |
+// ... | monitor block size |
+// [monitors ] / <- interpreter_state.monitor_base |
+// [struct interpretState ] <-----------------------------------------|
+// [return pc ] (return to callee of frame manager [1]
+// [locals and parameters ]
+// <- sender sp
+
+// [1] When the c++ interpreter calls a new method it returns to the frame
+// manager which allocates a new frame on the stack. In that case there
+// is no real callee of this newly allocated frame. The frame manager is
+// aware of the additional frame(s) and will pop them as nested calls
+// complete. Howevers tTo make it look good in the debugger the frame
+// manager actually installs a dummy pc pointing to RecursiveInterpreterActivation
+// with a fake interpreter_state* parameter to make it easy to debug
+// nested calls.
+
+// Note that contrary to the layout for the assembly interpreter the
+// expression stack allocated for the C++ interpreter is full sized.
+// However this is not as bad as it seems as the interpreter frame_manager
+// will truncate the unused space on succesive method calls.
+//
+// ------------------------------ C++ interpreter ----------------------------------------
+
+ public:
+ enum {
+ pc_return_offset = 0,
+ // All frames
+ link_offset = 0,
+ return_addr_offset = 1,
+ sender_sp_offset = 2,
+
+#ifndef CC_INTERP
+
+ // Interpreter frames
+ interpreter_frame_oop_temp_offset = 3, // for native calls only
+
+ interpreter_frame_sender_sp_offset = -1,
+ // outgoing sp before a call to an invoked method
+ interpreter_frame_last_sp_offset = interpreter_frame_sender_sp_offset - 1,
+ interpreter_frame_method_offset = interpreter_frame_last_sp_offset - 1,
+ interpreter_frame_mdp_offset = interpreter_frame_method_offset - 1,
+ interpreter_frame_cache_offset = interpreter_frame_mdp_offset - 1,
+ interpreter_frame_locals_offset = interpreter_frame_cache_offset - 1,
+ interpreter_frame_bcp_offset = interpreter_frame_locals_offset - 1,
+ interpreter_frame_initial_sp_offset = interpreter_frame_bcp_offset - 1,
+
+ interpreter_frame_monitor_block_top_offset = interpreter_frame_initial_sp_offset,
+ interpreter_frame_monitor_block_bottom_offset = interpreter_frame_initial_sp_offset,
+
+#endif // CC_INTERP
+
+ // Entry frames
+ // n.b. these values are determined by the layout defined in
+ // stubGenerator for the Java call stub
+ entry_frame_after_call_words = 27,
+ entry_frame_call_wrapper_offset = -8,
+
+ // we don't need a save area
+ arg_reg_save_area_bytes = 0,
+
+ // TODO - check that this is still correct
+ // Native frames
+
+ native_frame_initial_param_offset = 2
+
+ };
+
+ intptr_t ptr_at(int offset) const {
+ return *ptr_at_addr(offset);
+ }
+
+ void ptr_at_put(int offset, intptr_t value) {
+ *ptr_at_addr(offset) = value;
+ }
+
+ private:
+ // an additional field beyond _sp and _pc:
+ intptr_t* _fp; // frame pointer
+ // The interpreter and adapters will extend the frame of the caller.
+ // Since oopMaps are based on the sp of the caller before extension
+ // we need to know that value. However in order to compute the address
+ // of the return address we need the real "raw" sp. Since sparc already
+ // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's
+ // original sp we use that convention.
+
+ intptr_t* _unextended_sp;
+ void adjust_unextended_sp();
+
+ intptr_t* ptr_at_addr(int offset) const {
+ return (intptr_t*) addr_at(offset);
+ }
+
+#ifdef ASSERT
+ // Used in frame::sender_for_{interpreter,compiled}_frame
+ static void verify_deopt_original_pc( nmethod* nm, intptr_t* unextended_sp, bool is_method_handle_return = false);
+ static void verify_deopt_mh_original_pc(nmethod* nm, intptr_t* unextended_sp) {
+ verify_deopt_original_pc(nm, unextended_sp, true);
+ }
+#endif
+
+ public:
+ // Constructors
+
+ frame(intptr_t* sp, intptr_t* fp, address pc);
+
+ frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc);
+
+ frame(intptr_t* sp, intptr_t* fp);
+
+ void init(intptr_t* sp, intptr_t* fp, address pc);
+
+ // accessors for the instance variables
+ // Note: not necessarily the real 'frame pointer' (see real_fp)
+ intptr_t* fp() const { return _fp; }
+
+ inline address* sender_pc_addr() const;
+
+ // return address of param, zero origin index.
+ inline address* native_param_addr(int idx) const;
+
+ // expression stack tos if we are nested in a java call
+ intptr_t* interpreter_frame_last_sp() const;
+
+ // helper to update a map with callee-saved RBP
+ static void update_map_with_saved_link(RegisterMap* map, intptr_t** link_addr);
+
+#ifndef CC_INTERP
+ // deoptimization support
+ void interpreter_frame_set_last_sp(intptr_t* sp);
+#endif // CC_INTERP
+
+#ifdef CC_INTERP
+ inline interpreterState get_interpreterState() const;
+#endif // CC_INTERP
+
+#endif // CPU_AARCH64_VM_FRAME_AARCH64_HPP