--- old/src/hotspot/cpu/sparc/abstractInterpreter_sparc.cpp 2020-05-01 02:28:26.622940605 -0700 +++ /dev/null 2020-03-09 18:57:19.455001459 -0700 @@ -1,297 +0,0 @@ -/* - * Copyright (c) 1997, 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 "interpreter/interpreter.hpp" -#include "oops/constMethod.hpp" -#include "oops/klass.inline.hpp" -#include "oops/method.hpp" -#include "runtime/arguments.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) { - 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; -} - -static int size_activation_helper(int callee_extra_locals, int max_stack, int monitor_size) { - - // Figure out the size of an interpreter frame (in words) given that we have a fully allocated - // expression stack, the callee will have callee_extra_locals (so we can account for - // frame extension) and monitor_size for monitors. Basically we need to calculate - // this exactly like generate_fixed_frame/generate_compute_interpreter_state. - // - // - // The big complicating thing here is that we must ensure that the stack stays properly - // aligned. This would be even uglier if monitor size wasn't modulo what the stack - // needs to be aligned for). We are given that the sp (fp) is already aligned by - // the caller so we must ensure that it is properly aligned for our callee. - // - const int rounded_vm_local_words = - align_up((int)frame::interpreter_frame_vm_local_words,WordsPerLong); - // callee_locals and max_stack are counts, not the size in frame. - const int locals_size = - align_up(callee_extra_locals * Interpreter::stackElementWords, WordsPerLong); - const int max_stack_words = max_stack * Interpreter::stackElementWords; - return (align_up((max_stack_words - + rounded_vm_local_words - + frame::memory_parameter_word_sp_offset), WordsPerLong) - // already rounded - + locals_size + monitor_size); -} - -// How much stack a method top interpreter activation needs in words. -int AbstractInterpreter::size_top_interpreter_activation(Method* method) { - - // See call_stub code - int call_stub_size = align_up(7 + frame::memory_parameter_word_sp_offset, - WordsPerLong); // 7 + register save area - - // 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; - return size_activation_helper(method->max_locals(), method->max_stack(), - monitor_size) + call_stub_size; -} - -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. - - int monitor_size = monitors * frame::interpreter_frame_monitor_size(); - - assert(is_aligned(monitor_size, WordsPerLong), "must align"); - - // - // Note: if you look closely this appears to be doing something much different - // than generate_fixed_frame. What is happening is this. On sparc we have to do - // this dance with interpreter_sp_adjustment because the window save area would - // appear just below the bottom (tos) of the caller's java expression stack. Because - // the interpreter want to have the locals completely contiguous generate_fixed_frame - // will adjust the caller's sp for the "extra locals" (max_locals - parameter_size). - // Now in generate_fixed_frame the extension of the caller's sp happens in the callee. - // In this code the opposite occurs the caller adjusts it's own stack base on the callee. - // This is mostly ok but it does cause a problem when we get to the initial frame (the oldest) - // because the oldest frame would have adjust its callers frame and yet that frame - // already exists and isn't part of this array of frames we are unpacking. So at first - // glance this would seem to mess up that frame. However Deoptimization::fetch_unroll_info_helper() - // will after it calculates all of the frame's on_stack_size()'s will then figure out the - // amount to adjust the caller of the initial (oldest) frame and the calculation will all - // add up. It does seem like it simpler to account for the adjustment here (and remove the - // callee... parameters here). However this would mean that this routine would have to take - // the caller frame as input so we could adjust its sp (and set it's interpreter_sp_adjustment) - // and run the calling loop in the reverse order. This would also would appear to mean making - // this code aware of what the interactions are when that initial caller fram was an osr or - // other adapter frame. deoptimization is complicated enough and hard enough to debug that - // there is no sense in messing working code. - // - - int rounded_cls = align_up((callee_locals - callee_params), WordsPerLong); - assert(is_aligned(rounded_cls, WordsPerLong), "must align"); - - int raw_frame_size = size_activation_helper(rounded_cls, max_stack, monitor_size); - - return raw_frame_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_local_count, - frame* caller, - frame* interpreter_frame, - bool is_top_frame, - bool is_bottom_frame) { - // Set up the following variables: - // - Lmethod - // - Llocals - // - Lmonitors (to the indicated number of monitors) - // - Lesp (to the indicated number of temps) - // The frame caller on entry is a description of the caller of the - // frame we are about to layout. We are guaranteed that we will be - // able to fill in a new interpreter frame as its callee (i.e. the - // stack space is allocated and the amount was determined by an - // earlier call to the size_activation() method). On return caller - // while describe the interpreter frame we just layed out. - - // The skeleton frame must already look like an interpreter frame - // even if not fully filled out. - assert(interpreter_frame->is_interpreted_frame(), "Must be interpreted frame"); - - int rounded_vm_local_words = align_up((int)frame::interpreter_frame_vm_local_words,WordsPerLong); - int monitor_size = moncount * frame::interpreter_frame_monitor_size(); - assert(is_aligned(monitor_size, WordsPerLong), "must align"); - - intptr_t* fp = interpreter_frame->fp(); - - JavaThread* thread = JavaThread::current(); - RegisterMap map(thread, false); - // More verification that skeleton frame is properly walkable - assert(fp == caller->sp(), "fp must match"); - - intptr_t* montop = fp - rounded_vm_local_words; - - // preallocate monitors (cf. __ add_monitor_to_stack) - intptr_t* monitors = montop - monitor_size; - - // preallocate stack space - intptr_t* esp = monitors - 1 - - (tempcount * Interpreter::stackElementWords) - - popframe_extra_args; - - int local_words = method->max_locals() * Interpreter::stackElementWords; - NEEDS_CLEANUP; - intptr_t* locals; - if (caller->is_interpreted_frame()) { - // Can force the locals area to end up properly overlapping the top of the expression stack. - intptr_t* Lesp_ptr = caller->interpreter_frame_tos_address() - 1; - // Note that this computation means we replace size_of_parameters() values from the caller - // interpreter frame's expression stack with our argument locals - int parm_words = caller_actual_parameters * Interpreter::stackElementWords; - locals = Lesp_ptr + parm_words; - int delta = local_words - parm_words; - int computed_sp_adjustment = (delta > 0) ? align_up(delta, WordsPerLong) : 0; - *interpreter_frame->register_addr(I5_savedSP) = (intptr_t) (fp + computed_sp_adjustment) - STACK_BIAS; - if (!is_bottom_frame) { - // Llast_SP is set below for the current frame to SP (with the - // extra space for the callee's locals). Here we adjust - // Llast_SP for the caller's frame, removing the extra space - // for the current method's locals. - *caller->register_addr(Llast_SP) = *interpreter_frame->register_addr(I5_savedSP); - } else { - assert(*caller->register_addr(Llast_SP) >= *interpreter_frame->register_addr(I5_savedSP), "strange Llast_SP"); - } - } else { - assert(caller->is_compiled_frame() || caller->is_entry_frame(), "only possible cases"); - // Don't have Lesp available; lay out locals block in the caller - // adjacent to the register window save area. - // - // Compiled frames do not allocate a varargs area which is why this if - // statement is needed. - // - if (caller->is_compiled_frame()) { - locals = fp + frame::register_save_words + local_words - 1; - } else { - locals = fp + frame::memory_parameter_word_sp_offset + local_words - 1; - } - if (!caller->is_entry_frame()) { - // Caller wants his own SP back - int caller_frame_size = caller->cb()->frame_size(); - *interpreter_frame->register_addr(I5_savedSP) = (intptr_t)(caller->fp() - caller_frame_size) - STACK_BIAS; - } - } - if (TraceDeoptimization) { - if (caller->is_entry_frame()) { - // make sure I5_savedSP and the entry frames notion of saved SP - // agree. This assertion duplicate a check in entry frame code - // but catches the failure earlier. - assert(*caller->register_addr(Lscratch) == *interpreter_frame->register_addr(I5_savedSP), - "would change callers SP"); - } - if (caller->is_entry_frame()) { - tty->print("entry "); - } - if (caller->is_compiled_frame()) { - tty->print("compiled "); - if (caller->is_deoptimized_frame()) { - tty->print("(deopt) "); - } - } - if (caller->is_interpreted_frame()) { - tty->print("interpreted "); - } - tty->print_cr("caller fp=" INTPTR_FORMAT " sp=" INTPTR_FORMAT, p2i(caller->fp()), p2i(caller->sp())); - tty->print_cr("save area = " INTPTR_FORMAT ", " INTPTR_FORMAT, p2i(caller->sp()), p2i(caller->sp() + 16)); - tty->print_cr("save area = " INTPTR_FORMAT ", " INTPTR_FORMAT, p2i(caller->fp()), p2i(caller->fp() + 16)); - tty->print_cr("interpreter fp=" INTPTR_FORMAT ", " INTPTR_FORMAT, p2i(interpreter_frame->fp()), p2i(interpreter_frame->sp())); - tty->print_cr("save area = " INTPTR_FORMAT ", " INTPTR_FORMAT, p2i(interpreter_frame->sp()), p2i(interpreter_frame->sp() + 16)); - tty->print_cr("save area = " INTPTR_FORMAT ", " INTPTR_FORMAT, p2i(interpreter_frame->fp()), p2i(interpreter_frame->fp() + 16)); - tty->print_cr("Llocals = " INTPTR_FORMAT, p2i(locals)); - tty->print_cr("Lesp = " INTPTR_FORMAT, p2i(esp)); - tty->print_cr("Lmonitors = " INTPTR_FORMAT, p2i(monitors)); - } - - if (method->max_locals() > 0) { - assert(locals < caller->sp() || locals >= (caller->sp() + 16), "locals in save area"); - assert(locals < caller->fp() || locals > (caller->fp() + 16), "locals in save area"); - assert(locals < interpreter_frame->sp() || locals > (interpreter_frame->sp() + 16), "locals in save area"); - assert(locals < interpreter_frame->fp() || locals >= (interpreter_frame->fp() + 16), "locals in save area"); - } - assert(*interpreter_frame->register_addr(I5_savedSP) & 1, "must be odd"); - - *interpreter_frame->register_addr(Lmethod) = (intptr_t) method; - *interpreter_frame->register_addr(Llocals) = (intptr_t) locals; - *interpreter_frame->register_addr(Lmonitors) = (intptr_t) monitors; - *interpreter_frame->register_addr(Lesp) = (intptr_t) esp; - // Llast_SP will be same as SP as there is no adapter space - *interpreter_frame->register_addr(Llast_SP) = (intptr_t) interpreter_frame->sp() - STACK_BIAS; - *interpreter_frame->register_addr(LcpoolCache) = (intptr_t) method->constants()->cache(); - // save the mirror in the interpreter frame - *interpreter_frame->interpreter_frame_mirror_addr() = method->method_holder()->java_mirror(); - -#ifdef ASSERT - BasicObjectLock* mp = (BasicObjectLock*)monitors; - - assert(interpreter_frame->interpreter_frame_method() == method, "method matches"); - assert(interpreter_frame->interpreter_frame_local_at(9) == (intptr_t *)((intptr_t)locals - (9 * Interpreter::stackElementSize)), "locals match"); - assert(interpreter_frame->interpreter_frame_monitor_end() == mp, "monitor_end matches"); - assert(((intptr_t *)interpreter_frame->interpreter_frame_monitor_begin()) == ((intptr_t *)mp)+monitor_size, "monitor_begin matches"); - assert(interpreter_frame->interpreter_frame_tos_address()-1 == esp, "esp matches"); - - // check bounds - intptr_t* lo = interpreter_frame->sp() + (frame::memory_parameter_word_sp_offset - 1); - intptr_t* hi = interpreter_frame->fp() - rounded_vm_local_words; - assert(lo < monitors && montop <= hi, "monitors in bounds"); - assert(lo <= esp && esp < monitors, "esp in bounds"); -#endif // ASSERT -}