| /* |
| * Copyright (c) 1997, 2014, Oracle and/or its affiliates. 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 "ci/ciMethod.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "runtime/frame.inline.hpp" |
| |
| #ifndef CC_INTERP |
| |
| // asm based interpreter deoptimization helpers |
| int AbstractInterpreter::size_activation(int max_stack, |
| int temps, |
| int extra_args, |
| int monitors, |
| int callee_params, |
| int callee_locals, |
| bool is_top_frame) { |
| // Note: This calculation must exactly parallel the frame setup |
| // in AbstractInterpreterGenerator::generate_method_entry. |
| |
| // fixed size of an interpreter frame: |
| int overhead = frame::sender_sp_offset - |
| frame::interpreter_frame_initial_sp_offset; |
| // Our locals were accounted for by the caller (or last_frame_adjust |
| // on the transistion) Since the callee parameters already account |
| // for the callee's params we only need to account for the extra |
| // locals. |
| int size = overhead + |
| (callee_locals - callee_params)*Interpreter::stackElementWords + |
| monitors * frame::interpreter_frame_monitor_size() + |
| temps* Interpreter::stackElementWords + extra_args; |
| |
| return size; |
| } |
| |
| void AbstractInterpreter::layout_activation(Method* method, |
| int tempcount, |
| int popframe_extra_args, |
| int moncount, |
| int caller_actual_parameters, |
| int callee_param_count, |
| int callee_locals, |
| frame* caller, |
| frame* interpreter_frame, |
| bool is_top_frame, |
| bool is_bottom_frame) { |
| // The frame interpreter_frame is guaranteed to be the right size, |
| // as determined by a previous call to the size_activation() method. |
| // It is also guaranteed to be walkable even though it is in a |
| // skeletal state |
| |
| int max_locals = method->max_locals() * Interpreter::stackElementWords; |
| int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
| Interpreter::stackElementWords; |
| |
| #ifdef ASSERT |
| assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable"); |
| #endif |
| |
| interpreter_frame->interpreter_frame_set_method(method); |
| // NOTE the difference in using sender_sp and |
| // interpreter_frame_sender_sp interpreter_frame_sender_sp is |
| // the original sp of the caller (the unextended_sp) and |
| // sender_sp is fp+8/16 (32bit/64bit) XXX |
| intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; |
| |
| #ifdef ASSERT |
| if (caller->is_interpreted_frame()) { |
| assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
| } |
| #endif |
| |
| interpreter_frame->interpreter_frame_set_locals(locals); |
| BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); |
| BasicObjectLock* monbot = montop - moncount; |
| interpreter_frame->interpreter_frame_set_monitor_end(monbot); |
| |
| // Set last_sp |
| intptr_t* esp = (intptr_t*) monbot - |
| tempcount*Interpreter::stackElementWords - |
| popframe_extra_args; |
| interpreter_frame->interpreter_frame_set_last_sp(esp); |
| |
| // All frames but the initial (oldest) interpreter frame we fill in have |
| // a value for sender_sp that allows walking the stack but isn't |
| // truly correct. Correct the value here. |
| if (extra_locals != 0 && |
| interpreter_frame->sender_sp() == |
| interpreter_frame->interpreter_frame_sender_sp()) { |
| interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + |
| extra_locals); |
| } |
| *interpreter_frame->interpreter_frame_cache_addr() = |
| method->constants()->cache(); |
| } |
| |
| #endif // CC_INTERP |