/* * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2015 SAP SE. 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 "oops/constMethod.hpp" #include "oops/method.hpp" #include "runtime/frame.inline.hpp" #include "utilities/debug.hpp" #include "utilities/macros.hpp" int AbstractInterpreter::BasicType_as_index(BasicType type) { int i = 0; switch (type) { 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 : i = 4; break; case T_LONG : i = 5; break; case T_VOID : i = 6; break; case T_FLOAT : i = 7; break; case T_DOUBLE : i = 8; break; case T_OBJECT : i = 9; break; case T_ARRAY : i = 9; break; default : ShouldNotReachHere(); } assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); return i; } // These should never be compiled since the interpreter will prefer // the compiled version to the intrinsic version. bool AbstractInterpreter::can_be_compiled(methodHandle m) { switch (method_kind(m)) { case Interpreter::java_lang_math_sin : // fall thru case Interpreter::java_lang_math_cos : // fall thru case Interpreter::java_lang_math_tan : // fall thru case Interpreter::java_lang_math_abs : // fall thru case Interpreter::java_lang_math_log : // fall thru case Interpreter::java_lang_math_log10 : // fall thru case Interpreter::java_lang_math_sqrt : // fall thru case Interpreter::java_lang_math_pow : // fall thru case Interpreter::java_lang_math_exp : // fall thru case Interpreter::java_lang_math_fmaD : // fall thru case Interpreter::java_lang_math_fmaF : return false; default: return true; } } // How much stack a method activation needs in stack slots. // We must calc this exactly like in generate_fixed_frame. // Note: This returns the conservative size assuming maximum alignment. int AbstractInterpreter::size_top_interpreter_activation(Method* method) { const int max_alignment_size = 2; const int abi_scratch = frame::abi_reg_args_size; return method->max_locals() + method->max_stack() + frame::interpreter_frame_monitor_size() + max_alignment_size + abi_scratch; } // Returns number of stackElementWords needed for the interpreter frame with the // given sections. // This overestimates the stack by one slot in case of alignments. 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 TemplateInterpreterGenerator::generate_fixed_frame. assert(Interpreter::stackElementWords == 1, "sanity"); const int max_alignment_space = StackAlignmentInBytes / Interpreter::stackElementSize; const int abi_scratch = is_top_frame ? (frame::abi_reg_args_size / Interpreter::stackElementSize) : (frame::abi_minframe_size / Interpreter::stackElementSize); const int size = max_stack + (callee_locals - callee_params) + monitors * frame::interpreter_frame_monitor_size() + max_alignment_space + abi_scratch + frame::ijava_state_size / Interpreter::stackElementSize; // Fixed size of an interpreter frame, align to 16-byte. return (size & -2); } // Fills a sceletal interpreter frame generated during deoptimizations. // // Parameters: // // interpreter_frame != NULL: // set up the method, locals, and monitors. // The frame interpreter_frame, if not NULL, is guaranteed to be the // right size, as determined by a previous call to this method. // It is also guaranteed to be walkable even though it is in a skeletal state // // is_top_frame == true: // We're processing the *oldest* interpreter frame! // // pop_frame_extra_args: // If this is != 0 we are returning to a deoptimized frame by popping // off the callee frame. We want to re-execute the call that called the // callee interpreted, but since the return to the interpreter would pop // the arguments off advance the esp by dummy popframe_extra_args slots. // Popping off those will establish the stack layout as it was before the call. // 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_count, frame* caller, frame* interpreter_frame, bool is_top_frame, bool is_bottom_frame) { const int abi_scratch = is_top_frame ? (frame::abi_reg_args_size / Interpreter::stackElementSize) : (frame::abi_minframe_size / Interpreter::stackElementSize); intptr_t* locals_base = (caller->is_interpreted_frame()) ? caller->interpreter_frame_esp() + caller_actual_parameters : caller->sp() + method->max_locals() - 1 + (frame::abi_minframe_size / Interpreter::stackElementSize); intptr_t* monitor_base = caller->sp() - frame::ijava_state_size / Interpreter::stackElementSize; intptr_t* monitor = monitor_base - (moncount * frame::interpreter_frame_monitor_size()); intptr_t* esp_base = monitor - 1; intptr_t* esp = esp_base - tempcount - popframe_extra_args; intptr_t* sp = (intptr_t *) (((intptr_t) (esp_base - callee_locals_count + callee_param_count - method->max_stack()- abi_scratch)) & -StackAlignmentInBytes); intptr_t* sender_sp = caller->sp() + (frame::abi_minframe_size - frame::abi_reg_args_size) / Interpreter::stackElementSize; intptr_t* top_frame_sp = is_top_frame ? sp : sp + (frame::abi_minframe_size - frame::abi_reg_args_size) / Interpreter::stackElementSize; interpreter_frame->interpreter_frame_set_method(method); interpreter_frame->interpreter_frame_set_mirror(method->method_holder()->java_mirror()); interpreter_frame->interpreter_frame_set_locals(locals_base); interpreter_frame->interpreter_frame_set_cpcache(method->constants()->cache()); interpreter_frame->interpreter_frame_set_esp(esp); interpreter_frame->interpreter_frame_set_monitor_end((BasicObjectLock *)monitor); interpreter_frame->interpreter_frame_set_top_frame_sp(top_frame_sp); if (!is_bottom_frame) { interpreter_frame->interpreter_frame_set_sender_sp(sender_sp); } }