abstractInterpreter_arm.cpp revision 13244:ebbb31f0437e
1250963Sachim/* 2250963Sachim * Copyright (c) 2008, 2017, Oracle and/or its affiliates. All rights reserved. 3250963Sachim * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4250963Sachim * 5250963Sachim * This code is free software; you can redistribute it and/or modify it 6250963Sachim * under the terms of the GNU General Public License version 2 only, as 7250963Sachim * published by the Free Software Foundation. 8250963Sachim * 9250963Sachim * This code is distributed in the hope that it will be useful, but WITHOUT 10250963Sachim * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11250963Sachim * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12250963Sachim * version 2 for more details (a copy is included in the LICENSE file that 13250963Sachim * accompanied this code). 14250963Sachim * 15250963Sachim * You should have received a copy of the GNU General Public License version 16250963Sachim * 2 along with this work; if not, write to the Free Software Foundation, 17250963Sachim * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18250963Sachim * 19250963Sachim * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20250963Sachim * or visit www.oracle.com if you need additional information or have any 21250963Sachim * questions. 22250963Sachim * 23250963Sachim */ 24250963Sachim 25250963Sachim#include "precompiled.hpp" 26250963Sachim#include "asm/assembler.hpp" 27250963Sachim#include "interpreter/bytecode.hpp" 28250963Sachim#include "interpreter/interpreter.hpp" 29250963Sachim#include "oops/constMethod.hpp" 30250963Sachim#include "oops/method.hpp" 31250963Sachim#include "prims/methodHandles.hpp" 32250963Sachim#include "runtime/handles.inline.hpp" 33250963Sachim#include "runtime/frame.inline.hpp" 34250963Sachim#include "runtime/synchronizer.hpp" 35250963Sachim#include "utilities/macros.hpp" 36250963Sachim 37250963Sachimint AbstractInterpreter::BasicType_as_index(BasicType type) { 38250963Sachim int i = 0; 39250963Sachim switch (type) { 40250963Sachim#ifdef AARCH64 41250963Sachim case T_BOOLEAN: i = 0; break; 42250963Sachim case T_CHAR : i = 1; break; 43250963Sachim case T_BYTE : i = 2; break; 44250963Sachim case T_SHORT : i = 3; break; 45250963Sachim case T_INT : // fall through 46250963Sachim case T_LONG : // fall through 47250963Sachim case T_VOID : // fall through 48250963Sachim case T_FLOAT : // fall through 49250963Sachim case T_DOUBLE : i = 4; break; 50250963Sachim case T_OBJECT : // fall through 51250963Sachim case T_ARRAY : i = 5; break; 52250963Sachim#else 53250963Sachim case T_VOID : i = 0; break; 54250963Sachim case T_BOOLEAN: i = 1; break; 55250963Sachim case T_CHAR : i = 2; break; 56250963Sachim case T_BYTE : i = 3; break; 57250963Sachim case T_SHORT : i = 4; break; 58250963Sachim case T_INT : i = 5; break; 59250963Sachim case T_OBJECT : // fall through 60250963Sachim case T_ARRAY : i = 6; break; 61250963Sachim case T_LONG : i = 7; break; 62250963Sachim case T_FLOAT : i = 8; break; 63250963Sachim case T_DOUBLE : i = 9; break; 64250963Sachim#endif // AARCH64 65250963Sachim default : ShouldNotReachHere(); 66250963Sachim } 67250963Sachim assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); 68250963Sachim return i; 69250963Sachim} 70250963Sachim 71250963Sachim// How much stack a method activation needs in words. 72250963Sachimint AbstractInterpreter::size_top_interpreter_activation(Method* method) { 73250963Sachim const int stub_code = AARCH64_ONLY(24) NOT_AARCH64(12); // see generate_call_stub 74250963Sachim // Save space for one monitor to get into the interpreted method in case 75250963Sachim // the method is synchronized 76250963Sachim int monitor_size = method->is_synchronized() ? 77250963Sachim 1*frame::interpreter_frame_monitor_size() : 0; 78250963Sachim 79250963Sachim // total overhead size: monitor_size + (sender SP, thru expr stack bottom). 80250963Sachim // be sure to change this if you add/subtract anything to/from the overhead area 81250963Sachim const int overhead_size = monitor_size + 82250963Sachim (frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset); 83250963Sachim const int method_stack = (method->max_locals() + method->max_stack()) * 84250963Sachim Interpreter::stackElementWords; 85250963Sachim return overhead_size + method_stack + stub_code; 86250963Sachim} 87250963Sachim 88250963Sachim// asm based interpreter deoptimization helpers 89250963Sachimint AbstractInterpreter::size_activation(int max_stack, 90250963Sachim int tempcount, 91250963Sachim int extra_args, 92250963Sachim int moncount, 93250963Sachim int callee_param_count, 94250963Sachim int callee_locals, 95250963Sachim bool is_top_frame) { 96250963Sachim // Note: This calculation must exactly parallel the frame setup 97250963Sachim // in TemplateInterpreterGenerator::generate_fixed_frame. 98250963Sachim // fixed size of an interpreter frame: 99250963Sachim int overhead = frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset; 100250963Sachim 101250963Sachim // Our locals were accounted for by the caller (or last_frame_adjust on the transistion) 102250963Sachim // Since the callee parameters already account for the callee's params we only need to account for 103250963Sachim // the extra locals. 104250963Sachim 105250963Sachim int size = overhead + 106250963Sachim ((callee_locals - callee_param_count)*Interpreter::stackElementWords) + 107250963Sachim (moncount*frame::interpreter_frame_monitor_size()) + 108250963Sachim tempcount*Interpreter::stackElementWords + extra_args; 109250963Sachim 110250963Sachim#ifdef AARCH64 111250963Sachim size = align_up(size, StackAlignmentInBytes/BytesPerWord); 112250963Sachim#endif // AARCH64 113250963Sachim 114250963Sachim return size; 115250963Sachim} 116250963Sachim 117250963Sachimvoid AbstractInterpreter::layout_activation(Method* method, 118250963Sachim int tempcount, 119250963Sachim int popframe_extra_args, 120250963Sachim int moncount, 121250963Sachim int caller_actual_parameters, 122250963Sachim int callee_param_count, 123250963Sachim int callee_locals, 124250963Sachim frame* caller, 125250963Sachim frame* interpreter_frame, 126250963Sachim bool is_top_frame, 127250963Sachim bool is_bottom_frame) { 128250963Sachim 129250963Sachim // Set up the method, locals, and monitors. 130250963Sachim // The frame interpreter_frame is guaranteed to be the right size, 131250963Sachim // as determined by a previous call to the size_activation() method. 132250963Sachim // It is also guaranteed to be walkable even though it is in a skeletal state 133250963Sachim // NOTE: return size is in words not bytes 134250963Sachim 135250963Sachim // fixed size of an interpreter frame: 136250963Sachim int max_locals = method->max_locals() * Interpreter::stackElementWords; 137250963Sachim int extra_locals = (method->max_locals() - method->size_of_parameters()) * Interpreter::stackElementWords; 138250963Sachim 139250963Sachim#ifdef ASSERT 140250963Sachim assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable"); 141250963Sachim#endif 142250963Sachim 143250963Sachim interpreter_frame->interpreter_frame_set_method(method); 144250963Sachim // NOTE the difference in using sender_sp and interpreter_frame_sender_sp 145250963Sachim // interpreter_frame_sender_sp is the original sp of the caller (the unextended_sp) 146250963Sachim // and sender_sp is (fp + sender_sp_offset*wordSize) 147250963Sachim 148250963Sachim#ifdef AARCH64 149250963Sachim intptr_t* locals; 150250963Sachim if (caller->is_interpreted_frame()) { 151250963Sachim // attach locals to the expression stack of caller interpreter frame 152250963Sachim locals = caller->interpreter_frame_tos_address() + caller_actual_parameters*Interpreter::stackElementWords - 1; 153250963Sachim } else { 154250963Sachim assert (is_bottom_frame, "should be"); 155250963Sachim locals = interpreter_frame->fp() + frame::sender_sp_offset + method->max_locals() - 1; 156250963Sachim } 157250963Sachim 158250963Sachim if (TraceDeoptimization) { 159250963Sachim tty->print_cr("layout_activation:"); 160250963Sachim 161250963Sachim if (caller->is_entry_frame()) { 162250963Sachim tty->print("entry "); 163250963Sachim } 164250963Sachim if (caller->is_compiled_frame()) { 165250963Sachim tty->print("compiled "); 166250963Sachim } 167250963Sachim if (caller->is_interpreted_frame()) { 168250963Sachim tty->print("interpreted "); 169250963Sachim } 170250963Sachim tty->print_cr("caller: sp=%p, unextended_sp=%p, fp=%p, pc=%p", caller->sp(), caller->unextended_sp(), caller->fp(), caller->pc()); 171250963Sachim 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()); 172250963Sachim tty->print_cr("method: max_locals = %d, size_of_parameters = %d", method->max_locals(), method->size_of_parameters()); 173250963Sachim tty->print_cr("caller_actual_parameters = %d", caller_actual_parameters); 174250963Sachim tty->print_cr("locals = %p", locals); 175250963Sachim } 176250963Sachim 177250963Sachim#ifdef ASSERT 178250963Sachim if (caller_actual_parameters != method->size_of_parameters()) { 179250963Sachim assert(caller->is_interpreted_frame(), "adjusted caller_actual_parameters, but caller is not interpreter frame"); 180250963Sachim Bytecode_invoke inv(caller->interpreter_frame_method(), caller->interpreter_frame_bci()); 181250963Sachim 182250963Sachim if (is_bottom_frame) { 183250963Sachim assert(caller_actual_parameters == 0, "invalid adjusted caller_actual_parameters value for bottom frame"); 184250963Sachim assert(inv.is_invokedynamic() || inv.is_invokehandle(), "adjusted caller_actual_parameters for bottom frame, but not invokedynamic/invokehandle"); 185250963Sachim } else { 186250963Sachim assert(caller_actual_parameters == method->size_of_parameters()+1, "invalid adjusted caller_actual_parameters value"); 187250963Sachim assert(!inv.is_invokedynamic() && MethodHandles::has_member_arg(inv.klass(), inv.name()), "adjusted caller_actual_parameters, but no member arg"); 188250963Sachim } 189250963Sachim } 190250963Sachim if (caller->is_interpreted_frame()) { 191250963Sachim intptr_t* locals_base = (locals - method->max_locals()*Interpreter::stackElementWords + 1); 192250963Sachim locals_base = align_down(locals_base, StackAlignmentInBytes); 193250963Sachim assert(interpreter_frame->sender_sp() <= locals_base, "interpreter-to-interpreter frame chaining"); 194250963Sachim 195250963Sachim } else if (caller->is_compiled_frame()) { 196250963Sachim assert(locals + 1 <= caller->unextended_sp(), "compiled-to-interpreter frame chaining"); 197250963Sachim 198250963Sachim } else { 199250963Sachim assert(caller->is_entry_frame(), "should be"); 200250963Sachim assert(locals + 1 <= caller->fp(), "entry-to-interpreter frame chaining"); 201250963Sachim } 202250963Sachim#endif // ASSERT 203250963Sachim 204250963Sachim#else 205250963Sachim intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; 206250963Sachim#endif // AARCH64 207250963Sachim 208250963Sachim interpreter_frame->interpreter_frame_set_locals(locals); 209250963Sachim BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); 210250963Sachim BasicObjectLock* monbot = montop - moncount; 211250963Sachim interpreter_frame->interpreter_frame_set_monitor_end(monbot); 212250963Sachim 213250963Sachim // Set last_sp 214250963Sachim intptr_t* stack_top = (intptr_t*) monbot - 215250963Sachim tempcount*Interpreter::stackElementWords - 216250963Sachim popframe_extra_args; 217250963Sachim#ifdef AARCH64 218250963Sachim interpreter_frame->interpreter_frame_set_stack_top(stack_top); 219250963Sachim 220250963Sachim // We have to add extra reserved slots to max_stack. There are 3 users of the extra slots, 221250963Sachim // none of which are at the same time, so we just need to make sure there is enough room 222250963Sachim // for the biggest user: 223250963Sachim // -reserved slot for exception handler 224250963Sachim // -reserved slots for JSR292. Method::extra_stack_entries() is the size. 225250963Sachim // -3 reserved slots so get_method_counters() can save some registers before call_VM(). 226250963Sachim int max_stack = method->constMethod()->max_stack() + MAX2(3, Method::extra_stack_entries()); 227250963Sachim intptr_t* extended_sp = (intptr_t*) monbot - 228250963Sachim (max_stack * Interpreter::stackElementWords) - 229250963Sachim popframe_extra_args; 230250963Sachim extended_sp = align_down(extended_sp, StackAlignmentInBytes); 231250963Sachim interpreter_frame->interpreter_frame_set_extended_sp(extended_sp); 232250963Sachim#else 233250963Sachim interpreter_frame->interpreter_frame_set_last_sp(stack_top); 234250963Sachim#endif // AARCH64 235250963Sachim 236250963Sachim // All frames but the initial (oldest) interpreter frame we fill in have a 237250963Sachim // value for sender_sp that allows walking the stack but isn't 238250963Sachim // truly correct. Correct the value here. 239250963Sachim 240250963Sachim#ifdef AARCH64 241250963Sachim if (caller->is_interpreted_frame()) { 242250963Sachim intptr_t* sender_sp = align_down(caller->interpreter_frame_tos_address(), StackAlignmentInBytes); 243250963Sachim interpreter_frame->set_interpreter_frame_sender_sp(sender_sp); 244250963Sachim 245250963Sachim } else { 246250963Sachim // in case of non-interpreter caller sender_sp of the oldest frame is already 247250963Sachim // set to valid value 248250963Sachim } 249250963Sachim#else 250250963Sachim if (extra_locals != 0 && 251250963Sachim interpreter_frame->sender_sp() == interpreter_frame->interpreter_frame_sender_sp() ) { 252250963Sachim interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + extra_locals); 253250963Sachim } 254250963Sachim#endif // AARCH64 255250963Sachim 256250963Sachim *interpreter_frame->interpreter_frame_cache_addr() = 257250963Sachim method->constants()->cache(); 258250963Sachim *interpreter_frame->interpreter_frame_mirror_addr() = 259250963Sachim method->method_holder()->java_mirror(); 260250963Sachim} 261250963Sachim