--- /dev/null 2018-09-25 19:24:46.000000000 +0300 +++ new/src/hotspot/cpu/aarch32/frame_aarch32.hpp 2018-09-25 19:24:46.000000000 +0300 @@ -0,0 +1,189 @@ +/* + * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2014, Red Hat Inc. All rights reserved. + * Copyright (c) 2015, Linaro Ltd. All rights reserved. + * Copyright (c) 2015-2018, Azul Systems, 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_AARCH32_VM_FRAME_AARCH32_HPP +#define CPU_AARCH32_VM_FRAME_AARCH32_HPP + +#include "runtime/synchronizer.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 + +// [klass of method ] = mirror() mirror_offset +// [padding ] + +// [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 ] = link() +// [return pc ] <- fp + +// [last sp ] +// [oop temp ] (only for native calls) + +// [locals and parameters ] +// <- sender sp +// ------------------------------ Asm interpreter ---------------------------------------- + + public: + enum { + pc_return_offset = 0, + // All frames + sender_sp_offset = 1, + + // we don't need a save area + arg_reg_save_area_bytes = 0, + + // Interpreter frames + interpreter_frame_oop_temp_offset = 2, // for native calls only + + interpreter_frame_sender_sp_offset = 0, + // 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_padding_offset = interpreter_frame_mdp_offset - 1, + interpreter_frame_mirror_offset = interpreter_frame_padding_offset - 1, + interpreter_frame_cache_offset = interpreter_frame_mirror_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, + }; + + static int get_frame_size(bool apcs = FrameAPCS) { + return apcs ? 4 : 2; + } + + static int get_link_offset(bool apcs = FrameAPCS) { + return apcs ? -3 : -1; + } + + static int get_return_addr_offset(bool apcs = FrameAPCS) { + return apcs ? -1 : 0; + } + + // Entry frames + // n.b. these values are determined by the layout defined in + // stubGenerator for the Java call stub + static int get_entry_frame_after_call_words() { return (get_frame_size(VMFrameAPCS) + 10) + (StackAlignmentInBytes/BytesPerWord); } + static int get_entry_frame_call_wrapper_offset() { return -(get_frame_size(VMFrameAPCS) + 10); } + + static int get_offset_from_rfp_bytes() { return wordSize * (get_frame_size(VMFrameAPCS) - 1); } + static int get_interpreter_frame_oop_temp_offset() { return interpreter_frame_oop_temp_offset; } + static int get_interpreter_frame_sender_sp_offset() { return -get_frame_size() + interpreter_frame_sender_sp_offset; } + static int get_interpreter_frame_last_sp_offset() { return -get_frame_size() + interpreter_frame_last_sp_offset; } + static int get_interpreter_frame_method_offset() { return -get_frame_size() + interpreter_frame_method_offset; } + static int get_interpreter_frame_mdp_offset() { return -get_frame_size() + interpreter_frame_mdp_offset; } + static int get_interpreter_frame_padding_offset() { return -get_frame_size() + interpreter_frame_padding_offset; } + static int get_interpreter_frame_mirror_offset() { return -get_frame_size() + interpreter_frame_mirror_offset; } + static int get_interpreter_frame_cache_offset() { return -get_frame_size() + interpreter_frame_cache_offset; } + static int get_interpreter_frame_locals_offset() { return -get_frame_size() + interpreter_frame_locals_offset; } + static int get_interpreter_frame_bcp_offset() { return -get_frame_size() + interpreter_frame_bcp_offset; } + static int get_interpreter_frame_initial_sp_offset() { return -get_frame_size() + interpreter_frame_initial_sp_offset; } + static int get_interpreter_frame_monitor_block_top_offset() { return -get_frame_size() + interpreter_frame_monitor_block_top_offset; } + static int get_interpreter_frame_monitor_block_bottom_offset() { return -get_frame_size() + interpreter_frame_monitor_block_bottom_offset; } + + 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( CompiledMethod* nm, intptr_t* unextended_sp); +#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; + + // 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); + + // deoptimization support + void interpreter_frame_set_last_sp(intptr_t* sp); + + static jint interpreter_frame_expression_stack_direction() { return -1; } + +#endif // CPU_AARCH32_VM_FRAME_AARCH32_HPP