| /* |
| * Copyright (c) 2008, 2017, 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 "asm/assembler.hpp" |
| #include "interpreter/bytecode.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "oops/constMethod.hpp" |
| #include "oops/method.hpp" |
| #include "prims/methodHandles.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/frame.inline.hpp" |
| #include "runtime/synchronizer.hpp" |
| #include "utilities/align.hpp" |
| #include "utilities/macros.hpp" |
| |
| int AbstractInterpreter::BasicType_as_index(BasicType type) { |
| int i = 0; |
| switch (type) { |
| #ifdef AARCH64 |
| case T_BOOLEAN: i = 0; break; |
| case T_CHAR : i = 1; break; |
| case T_BYTE : i = 2; break; |
| case T_SHORT : i = 3; break; |
| case T_INT : // fall through |
| case T_LONG : // fall through |
| case T_VOID : // fall through |
| case T_FLOAT : // fall through |
| case T_DOUBLE : i = 4; break; |
| case T_OBJECT : // fall through |
| case T_ARRAY : i = 5; break; |
| #else |
| case T_VOID : i = 0; break; |
| case T_BOOLEAN: i = 1; break; |
| case T_CHAR : i = 2; break; |
| case T_BYTE : i = 3; break; |
| case T_SHORT : i = 4; break; |
| case T_INT : i = 5; break; |
| case T_OBJECT : // fall through |
| case T_ARRAY : i = 6; break; |
| case T_LONG : i = 7; break; |
| case T_FLOAT : i = 8; break; |
| case T_DOUBLE : i = 9; break; |
| #endif // AARCH64 |
| default : ShouldNotReachHere(); |
| } |
| assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); |
| return i; |
| } |
| |
| // How much stack a method activation needs in words. |
| int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
| const int stub_code = AARCH64_ONLY(24) NOT_AARCH64(12); // see generate_call_stub |
| // Save space for one monitor to get into the interpreted method in case |
| // the method is synchronized |
| int monitor_size = method->is_synchronized() ? |
| 1*frame::interpreter_frame_monitor_size() : 0; |
| |
| // total overhead size: monitor_size + (sender SP, thru expr stack bottom). |
| // be sure to change this if you add/subtract anything to/from the overhead area |
| const int overhead_size = monitor_size + |
| (frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset); |
| const int method_stack = (method->max_locals() + method->max_stack()) * |
| Interpreter::stackElementWords; |
| return overhead_size + method_stack + stub_code; |
| } |
| |
| // asm based interpreter deoptimization helpers |
| int AbstractInterpreter::size_activation(int max_stack, |
| int tempcount, |
| int extra_args, |
| int moncount, |
| int callee_param_count, |
| int callee_locals, |
| bool is_top_frame) { |
| // Note: This calculation must exactly parallel the frame setup |
| // in TemplateInterpreterGenerator::generate_fixed_frame. |
| // 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_param_count)*Interpreter::stackElementWords) + |
| (moncount*frame::interpreter_frame_monitor_size()) + |
| tempcount*Interpreter::stackElementWords + extra_args; |
| |
| #ifdef AARCH64 |
| size = align_up(size, StackAlignmentInBytes/BytesPerWord); |
| #endif // AARCH64 |
| |
| 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) { |
| |
| // Set up the method, locals, and monitors. |
| // 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 |
| // NOTE: return size is in words not bytes |
| |
| // fixed size of an interpreter frame: |
| 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 + sender_sp_offset*wordSize) |
| |
| #ifdef AARCH64 |
| intptr_t* locals; |
| if (caller->is_interpreted_frame()) { |
| // attach locals to the expression stack of caller interpreter frame |
| locals = caller->interpreter_frame_tos_address() + caller_actual_parameters*Interpreter::stackElementWords - 1; |
| } else { |
| assert (is_bottom_frame, "should be"); |
| locals = interpreter_frame->fp() + frame::sender_sp_offset + method->max_locals() - 1; |
| } |
| |
| if (TraceDeoptimization) { |
| tty->print_cr("layout_activation:"); |
| |
| if (caller->is_entry_frame()) { |
| tty->print("entry "); |
| } |
| if (caller->is_compiled_frame()) { |
| tty->print("compiled "); |
| } |
| if (caller->is_interpreted_frame()) { |
| tty->print("interpreted "); |
| } |
| tty->print_cr("caller: sp=%p, unextended_sp=%p, fp=%p, pc=%p", caller->sp(), caller->unextended_sp(), caller->fp(), caller->pc()); |
| tty->print_cr("interpreter_frame: sp=%p, unextended_sp=%p, fp=%p, pc=%p", interpreter_frame->sp(), interpreter_frame->unextended_sp(), interpreter_frame->fp(), interpreter_frame->pc()); |
| tty->print_cr("method: max_locals = %d, size_of_parameters = %d", method->max_locals(), method->size_of_parameters()); |
| tty->print_cr("caller_actual_parameters = %d", caller_actual_parameters); |
| tty->print_cr("locals = %p", locals); |
| } |
| |
| #ifdef ASSERT |
| if (caller_actual_parameters != method->size_of_parameters()) { |
| assert(caller->is_interpreted_frame(), "adjusted caller_actual_parameters, but caller is not interpreter frame"); |
| Bytecode_invoke inv(caller->interpreter_frame_method(), caller->interpreter_frame_bci()); |
| |
| if (is_bottom_frame) { |
| assert(caller_actual_parameters == 0, "invalid adjusted caller_actual_parameters value for bottom frame"); |
| assert(inv.is_invokedynamic() || inv.is_invokehandle(), "adjusted caller_actual_parameters for bottom frame, but not invokedynamic/invokehandle"); |
| } else { |
| assert(caller_actual_parameters == method->size_of_parameters()+1, "invalid adjusted caller_actual_parameters value"); |
| assert(!inv.is_invokedynamic() && MethodHandles::has_member_arg(inv.klass(), inv.name()), "adjusted caller_actual_parameters, but no member arg"); |
| } |
| } |
| if (caller->is_interpreted_frame()) { |
| intptr_t* locals_base = (locals - method->max_locals()*Interpreter::stackElementWords + 1); |
| locals_base = align_down(locals_base, StackAlignmentInBytes); |
| assert(interpreter_frame->sender_sp() <= locals_base, "interpreter-to-interpreter frame chaining"); |
| |
| } else if (caller->is_compiled_frame()) { |
| assert(locals + 1 <= caller->unextended_sp(), "compiled-to-interpreter frame chaining"); |
| |
| } else { |
| assert(caller->is_entry_frame(), "should be"); |
| assert(locals + 1 <= caller->fp(), "entry-to-interpreter frame chaining"); |
| } |
| #endif // ASSERT |
| |
| #else |
| intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; |
| #endif // AARCH64 |
| |
| 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* stack_top = (intptr_t*) monbot - |
| tempcount*Interpreter::stackElementWords - |
| popframe_extra_args; |
| #ifdef AARCH64 |
| interpreter_frame->interpreter_frame_set_stack_top(stack_top); |
| |
| // We have to add extra reserved slots to max_stack. There are 3 users of the extra slots, |
| // none of which are at the same time, so we just need to make sure there is enough room |
| // for the biggest user: |
| // -reserved slot for exception handler |
| // -reserved slots for JSR292. Method::extra_stack_entries() is the size. |
| // -3 reserved slots so get_method_counters() can save some registers before call_VM(). |
| int max_stack = method->constMethod()->max_stack() + MAX2(3, Method::extra_stack_entries()); |
| intptr_t* extended_sp = (intptr_t*) monbot - |
| (max_stack * Interpreter::stackElementWords) - |
| popframe_extra_args; |
| extended_sp = align_down(extended_sp, StackAlignmentInBytes); |
| interpreter_frame->interpreter_frame_set_extended_sp(extended_sp); |
| #else |
| interpreter_frame->interpreter_frame_set_last_sp(stack_top); |
| #endif // AARCH64 |
| |
| // 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. |
| |
| #ifdef AARCH64 |
| if (caller->is_interpreted_frame()) { |
| intptr_t* sender_sp = align_down(caller->interpreter_frame_tos_address(), StackAlignmentInBytes); |
| interpreter_frame->set_interpreter_frame_sender_sp(sender_sp); |
| |
| } else { |
| // in case of non-interpreter caller sender_sp of the oldest frame is already |
| // set to valid value |
| } |
| #else |
| 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); |
| } |
| #endif // AARCH64 |
| |
| *interpreter_frame->interpreter_frame_cache_addr() = |
| method->constants()->cache(); |
| *interpreter_frame->interpreter_frame_mirror_addr() = |
| method->method_holder()->java_mirror(); |
| } |