--- old/src/hotspot/cpu/sparc/interp_masm_sparc.cpp 2020-05-20 18:08:58.080405319 -0700 +++ /dev/null 2020-03-09 18:57:19.455001459 -0700 @@ -1,2650 +0,0 @@ -/* - * Copyright (c) 1997, 2020, 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/macroAssembler.inline.hpp" -#include "interp_masm_sparc.hpp" -#include "interpreter/interpreter.hpp" -#include "interpreter/interpreterRuntime.hpp" -#include "logging/log.hpp" -#include "oops/arrayOop.hpp" -#include "oops/markWord.hpp" -#include "oops/methodData.hpp" -#include "oops/method.hpp" -#include "oops/methodCounters.hpp" -#include "prims/jvmtiExport.hpp" -#include "prims/jvmtiThreadState.hpp" -#include "runtime/basicLock.hpp" -#include "runtime/biasedLocking.hpp" -#include "runtime/frame.inline.hpp" -#include "runtime/safepointMechanism.hpp" -#include "runtime/sharedRuntime.hpp" -#include "runtime/thread.inline.hpp" -#include "utilities/align.hpp" -#include "utilities/powerOfTwo.hpp" - -// Implementation of InterpreterMacroAssembler - -// This file specializes the assember with interpreter-specific macros - -const Address InterpreterMacroAssembler::l_tmp(FP, (frame::interpreter_frame_l_scratch_fp_offset * wordSize) + STACK_BIAS); -const Address InterpreterMacroAssembler::d_tmp(FP, (frame::interpreter_frame_d_scratch_fp_offset * wordSize) + STACK_BIAS); - -void InterpreterMacroAssembler::jump_to_entry(address entry) { - assert(entry, "Entry must have been generated by now"); - AddressLiteral al(entry); - jump_to(al, G3_scratch); - delayed()->nop(); -} - -void InterpreterMacroAssembler::compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta) { - // Note: this algorithm is also used by C1's OSR entry sequence. - // Any changes should also be applied to CodeEmitter::emit_osr_entry(). - assert_different_registers(args_size, locals_size); - // max_locals*2 for TAGS. Assumes that args_size has already been adjusted. - subcc(locals_size, args_size, delta);// extra space for non-arguments locals in words - // Use br/mov combination because it works on both V8 and V9 and is - // faster. - Label skip_move; - br(Assembler::negative, true, Assembler::pt, skip_move); - delayed()->mov(G0, delta); - bind(skip_move); - align_up(delta, WordsPerLong); // make multiple of 2 (SP must be 2-word aligned) - sll(delta, LogBytesPerWord, delta); // extra space for locals in bytes -} - -// Dispatch code executed in the prolog of a bytecode which does not do it's -// own dispatch. The dispatch address is computed and placed in IdispatchAddress -void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { - assert_not_delayed(); - ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode - // dispatch table to use - AddressLiteral tbl(Interpreter::dispatch_table(state)); - sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize - set(tbl, G3_scratch); // compute addr of table - ld_ptr(G3_scratch, Lbyte_code, IdispatchAddress); // get entry addr -} - - -// Dispatch code executed in the epilog of a bytecode which does not do it's -// own dispatch. The dispatch address in IdispatchAddress is used for the -// dispatch. -void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { - assert_not_delayed(); - interp_verify_oop(Otos_i, state, __FILE__, __LINE__); - jmp( IdispatchAddress, 0 ); - if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr); - else delayed()->nop(); -} - -void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr, bool generate_poll) { - // %%%% consider branching to a single shared dispatch stub (for each bcp_incr) - assert_not_delayed(); - ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode - dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr, true, generate_poll); -} - - -void InterpreterMacroAssembler::dispatch_next_noverify_oop(TosState state, int bcp_incr) { - // %%%% consider branching to a single shared dispatch stub (for each bcp_incr) - assert_not_delayed(); - ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode - dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr, false); -} - - -void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { - // load current bytecode - assert_not_delayed(); - ldub( Lbcp, 0, Lbyte_code); // load next bytecode - dispatch_base(state, table); -} - - -void InterpreterMacroAssembler::call_VM_leaf_base( - Register java_thread, - address entry_point, - int number_of_arguments -) { - if (!java_thread->is_valid()) - java_thread = L7_thread_cache; - // super call - MacroAssembler::call_VM_leaf_base(java_thread, entry_point, number_of_arguments); -} - - -void InterpreterMacroAssembler::call_VM_base( - Register oop_result, - Register java_thread, - Register last_java_sp, - address entry_point, - int number_of_arguments, - bool check_exception -) { - if (!java_thread->is_valid()) - java_thread = L7_thread_cache; - // See class ThreadInVMfromInterpreter, which assumes that the interpreter - // takes responsibility for setting its own thread-state on call-out. - // However, ThreadInVMfromInterpreter resets the state to "in_Java". - - //save_bcp(); // save bcp - MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exception); - //restore_bcp(); // restore bcp - //restore_locals(); // restore locals pointer -} - - -void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { - if (JvmtiExport::can_pop_frame()) { - Label L; - - // Check the "pending popframe condition" flag in the current thread - ld(G2_thread, JavaThread::popframe_condition_offset(), scratch_reg); - - // Initiate popframe handling only if it is not already being processed. If the flag - // has the popframe_processing bit set, it means that this code is called *during* popframe - // handling - we don't want to reenter. - btst(JavaThread::popframe_pending_bit, scratch_reg); - br(zero, false, pt, L); - delayed()->nop(); - btst(JavaThread::popframe_processing_bit, scratch_reg); - br(notZero, false, pt, L); - delayed()->nop(); - - // Call Interpreter::remove_activation_preserving_args_entry() to get the - // address of the same-named entrypoint in the generated interpreter code. - call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); - - // Jump to Interpreter::_remove_activation_preserving_args_entry - jmpl(O0, G0, G0); - delayed()->nop(); - bind(L); - } -} - - -void InterpreterMacroAssembler::load_earlyret_value(TosState state) { - Register thr_state = G4_scratch; - ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state); - const Address tos_addr(thr_state, JvmtiThreadState::earlyret_tos_offset()); - const Address oop_addr(thr_state, JvmtiThreadState::earlyret_oop_offset()); - const Address val_addr(thr_state, JvmtiThreadState::earlyret_value_offset()); - switch (state) { - case ltos: ld_long(val_addr, Otos_l); break; - case atos: ld_ptr(oop_addr, Otos_l); - st_ptr(G0, oop_addr); break; - case btos: // fall through - case ztos: // fall through - case ctos: // fall through - case stos: // fall through - case itos: ld(val_addr, Otos_l1); break; - case ftos: ldf(FloatRegisterImpl::S, val_addr, Ftos_f); break; - case dtos: ldf(FloatRegisterImpl::D, val_addr, Ftos_d); break; - case vtos: /* nothing to do */ break; - default : ShouldNotReachHere(); - } - // Clean up tos value in the jvmti thread state - or3(G0, ilgl, G3_scratch); - stw(G3_scratch, tos_addr); - st_long(G0, val_addr); - interp_verify_oop(Otos_i, state, __FILE__, __LINE__); -} - - -void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { - if (JvmtiExport::can_force_early_return()) { - Label L; - Register thr_state = G3_scratch; - ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state); - br_null_short(thr_state, pt, L); // if (thread->jvmti_thread_state() == NULL) exit; - - // Initiate earlyret handling only if it is not already being processed. - // If the flag has the earlyret_processing bit set, it means that this code - // is called *during* earlyret handling - we don't want to reenter. - ld(thr_state, JvmtiThreadState::earlyret_state_offset(), G4_scratch); - cmp_and_br_short(G4_scratch, JvmtiThreadState::earlyret_pending, Assembler::notEqual, pt, L); - - // Call Interpreter::remove_activation_early_entry() to get the address of the - // same-named entrypoint in the generated interpreter code - ld(thr_state, JvmtiThreadState::earlyret_tos_offset(), Otos_l1); - call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), Otos_l1); - - // Jump to Interpreter::_remove_activation_early_entry - jmpl(O0, G0, G0); - delayed()->nop(); - bind(L); - } -} - - -void InterpreterMacroAssembler::super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1, Register arg_2) { - mov(arg_1, O0); - mov(arg_2, O1); - MacroAssembler::call_VM_leaf_base(thread_cache, entry_point, 2); -} - -void InterpreterMacroAssembler::dispatch_base(TosState state, address* table) { - assert_not_delayed(); - dispatch_Lbyte_code(state, table); -} - - -void InterpreterMacroAssembler::dispatch_normal(TosState state) { - dispatch_base(state, Interpreter::normal_table(state)); -} - - -void InterpreterMacroAssembler::dispatch_only(TosState state) { - dispatch_base(state, Interpreter::dispatch_table(state)); -} - - -// common code to dispatch and dispatch_only -// dispatch value in Lbyte_code and increment Lbcp - -void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, address* table, int bcp_incr, bool verify, bool generate_poll) { - // %%%%% maybe implement +VerifyActivationFrameSize here - //verify_thread(); //too slow; we will just verify on method entry & exit - if (verify) interp_verify_oop(Otos_i, state, __FILE__, __LINE__); - // dispatch table to use - AddressLiteral tbl(table); - Label dispatch; - - if (generate_poll) { - AddressLiteral sfpt_tbl(Interpreter::safept_table(state)); - Label no_safepoint; - - if (tbl.value() != sfpt_tbl.value()) { - ldx(Address(G2_thread, Thread::polling_page_offset()), G3_scratch, 0); - // Armed page has poll_bit set, if poll bit is cleared just continue. - and3(G3_scratch, SafepointMechanism::poll_bit(), G3_scratch); - - br_null_short(G3_scratch, Assembler::pt, no_safepoint); - set(sfpt_tbl, G3_scratch); - ba_short(dispatch); - } - bind(no_safepoint); - } - - set(tbl, G3_scratch); // compute addr of table - bind(dispatch); - sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize - ld_ptr(G3_scratch, Lbyte_code, G3_scratch); // get entry addr - jmp( G3_scratch, 0 ); - if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr); - else delayed()->nop(); -} - - -// Helpers for expression stack - -// Longs and doubles are Category 2 computational types in the -// JVM specification (section 3.11.1) and take 2 expression stack or -// local slots. -// Aligning them on 32 bit with tagged stacks is hard because the code generated -// for the dup* bytecodes depends on what types are already on the stack. -// If the types are split into the two stack/local slots, that is much easier -// (and we can use 0 for non-reference tags). - -// Known good alignment in _LP64 but unknown otherwise -void InterpreterMacroAssembler::load_unaligned_double(Register r1, int offset, FloatRegister d) { - assert_not_delayed(); - - ldf(FloatRegisterImpl::D, r1, offset, d); -} - -// Known good alignment in _LP64 but unknown otherwise -void InterpreterMacroAssembler::store_unaligned_double(FloatRegister d, Register r1, int offset) { - assert_not_delayed(); - - stf(FloatRegisterImpl::D, d, r1, offset); - // store something more useful here - debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);) -} - - -// Known good alignment in _LP64 but unknown otherwise -void InterpreterMacroAssembler::load_unaligned_long(Register r1, int offset, Register rd) { - assert_not_delayed(); - ldx(r1, offset, rd); -} - -// Known good alignment in _LP64 but unknown otherwise -void InterpreterMacroAssembler::store_unaligned_long(Register l, Register r1, int offset) { - assert_not_delayed(); - - stx(l, r1, offset); - // store something more useful here - stx(G0, r1, offset+Interpreter::stackElementSize); -} - -void InterpreterMacroAssembler::pop_i(Register r) { - assert_not_delayed(); - ld(Lesp, Interpreter::expr_offset_in_bytes(0), r); - inc(Lesp, Interpreter::stackElementSize); - debug_only(verify_esp(Lesp)); -} - -void InterpreterMacroAssembler::pop_ptr(Register r, Register scratch) { - assert_not_delayed(); - ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), r); - inc(Lesp, Interpreter::stackElementSize); - debug_only(verify_esp(Lesp)); -} - -void InterpreterMacroAssembler::pop_l(Register r) { - assert_not_delayed(); - load_unaligned_long(Lesp, Interpreter::expr_offset_in_bytes(0), r); - inc(Lesp, 2*Interpreter::stackElementSize); - debug_only(verify_esp(Lesp)); -} - - -void InterpreterMacroAssembler::pop_f(FloatRegister f, Register scratch) { - assert_not_delayed(); - ldf(FloatRegisterImpl::S, Lesp, Interpreter::expr_offset_in_bytes(0), f); - inc(Lesp, Interpreter::stackElementSize); - debug_only(verify_esp(Lesp)); -} - - -void InterpreterMacroAssembler::pop_d(FloatRegister f, Register scratch) { - assert_not_delayed(); - load_unaligned_double(Lesp, Interpreter::expr_offset_in_bytes(0), f); - inc(Lesp, 2*Interpreter::stackElementSize); - debug_only(verify_esp(Lesp)); -} - - -void InterpreterMacroAssembler::push_i(Register r) { - assert_not_delayed(); - debug_only(verify_esp(Lesp)); - st(r, Lesp, 0); - dec(Lesp, Interpreter::stackElementSize); -} - -void InterpreterMacroAssembler::push_ptr(Register r) { - assert_not_delayed(); - st_ptr(r, Lesp, 0); - dec(Lesp, Interpreter::stackElementSize); -} - -// remember: our convention for longs in SPARC is: -// O0 (Otos_l1) has high-order part in first word, -// O1 (Otos_l2) has low-order part in second word - -void InterpreterMacroAssembler::push_l(Register r) { - assert_not_delayed(); - debug_only(verify_esp(Lesp)); - // Longs are stored in memory-correct order, even if unaligned. - int offset = -Interpreter::stackElementSize; - store_unaligned_long(r, Lesp, offset); - dec(Lesp, 2 * Interpreter::stackElementSize); -} - - -void InterpreterMacroAssembler::push_f(FloatRegister f) { - assert_not_delayed(); - debug_only(verify_esp(Lesp)); - stf(FloatRegisterImpl::S, f, Lesp, 0); - dec(Lesp, Interpreter::stackElementSize); -} - - -void InterpreterMacroAssembler::push_d(FloatRegister d) { - assert_not_delayed(); - debug_only(verify_esp(Lesp)); - // Longs are stored in memory-correct order, even if unaligned. - int offset = -Interpreter::stackElementSize; - store_unaligned_double(d, Lesp, offset); - dec(Lesp, 2 * Interpreter::stackElementSize); -} - - -void InterpreterMacroAssembler::push(TosState state) { - interp_verify_oop(Otos_i, state, __FILE__, __LINE__); - switch (state) { - case atos: push_ptr(); break; - case btos: // fall through - case ztos: // fall through - case ctos: // fall through - case stos: // fall through - case itos: push_i(); break; - case ltos: push_l(); break; - case ftos: push_f(); break; - case dtos: push_d(); break; - case vtos: /* nothing to do */ break; - default : ShouldNotReachHere(); - } -} - - -void InterpreterMacroAssembler::pop(TosState state) { - switch (state) { - case atos: pop_ptr(); break; - case btos: // fall through - case ztos: // fall through - case ctos: // fall through - case stos: // fall through - case itos: pop_i(); break; - case ltos: pop_l(); break; - case ftos: pop_f(); break; - case dtos: pop_d(); break; - case vtos: /* nothing to do */ break; - default : ShouldNotReachHere(); - } - interp_verify_oop(Otos_i, state, __FILE__, __LINE__); -} - - -// Helpers for swap and dup -void InterpreterMacroAssembler::load_ptr(int n, Register val) { - ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(n), val); -} -void InterpreterMacroAssembler::store_ptr(int n, Register val) { - st_ptr(val, Lesp, Interpreter::expr_offset_in_bytes(n)); -} - - -void InterpreterMacroAssembler::load_receiver(Register param_count, - Register recv) { - sll(param_count, Interpreter::logStackElementSize, param_count); - ld_ptr(Lesp, param_count, recv); // gets receiver oop -} - -void InterpreterMacroAssembler::empty_expression_stack() { - // Reset Lesp. - sub( Lmonitors, wordSize, Lesp ); - - // Reset SP by subtracting more space from Lesp. - Label done; - assert(G4_scratch != Gframe_size, "Only you can prevent register aliasing!"); - - // A native does not need to do this, since its callee does not change SP. - ld(Lmethod, Method::access_flags_offset(), Gframe_size); // Load access flags. - btst(JVM_ACC_NATIVE, Gframe_size); - br(Assembler::notZero, false, Assembler::pt, done); - delayed()->nop(); - - // Compute max expression stack+register save area - ld_ptr(Lmethod, in_bytes(Method::const_offset()), Gframe_size); - lduh(Gframe_size, in_bytes(ConstMethod::max_stack_offset()), Gframe_size); // Load max stack. - add(Gframe_size, frame::memory_parameter_word_sp_offset+Method::extra_stack_entries(), Gframe_size ); - - // - // now set up a stack frame with the size computed above - // - //round_to( Gframe_size, WordsPerLong ); // -- moved down to the "and" below - sll( Gframe_size, LogBytesPerWord, Gframe_size ); - sub( Lesp, Gframe_size, Gframe_size ); - and3( Gframe_size, -(2 * wordSize), Gframe_size ); // align SP (downwards) to an 8/16-byte boundary - debug_only(verify_sp(Gframe_size, G4_scratch)); - sub(Gframe_size, STACK_BIAS, Gframe_size ); - mov(Gframe_size, SP); - - bind(done); -} - - -#ifdef ASSERT -void InterpreterMacroAssembler::verify_sp(Register Rsp, Register Rtemp) { - Label Bad, OK; - - // Saved SP must be aligned. - btst(2*BytesPerWord-1, Rsp); - br(Assembler::notZero, false, Assembler::pn, Bad); - delayed()->nop(); - - // Saved SP, plus register window size, must not be above FP. - add(Rsp, frame::register_save_words * wordSize, Rtemp); - sub(Rtemp, STACK_BIAS, Rtemp); // Bias Rtemp before cmp to FP - cmp_and_brx_short(Rtemp, FP, Assembler::greaterUnsigned, Assembler::pn, Bad); - - // Saved SP must not be ridiculously below current SP. - size_t maxstack = MAX2(JavaThread::stack_size_at_create(), (size_t) 4*K*K); - set(maxstack, Rtemp); - sub(SP, Rtemp, Rtemp); - add(Rtemp, STACK_BIAS, Rtemp); // Unbias Rtemp before cmp to Rsp - cmp_and_brx_short(Rsp, Rtemp, Assembler::lessUnsigned, Assembler::pn, Bad); - - ba_short(OK); - - bind(Bad); - stop("on return to interpreted call, restored SP is corrupted"); - - bind(OK); -} - - -void InterpreterMacroAssembler::verify_esp(Register Resp) { - // about to read or write Resp[0] - // make sure it is not in the monitors or the register save area - Label OK1, OK2; - - cmp(Resp, Lmonitors); - brx(Assembler::lessUnsigned, true, Assembler::pt, OK1); - delayed()->sub(Resp, frame::memory_parameter_word_sp_offset * wordSize, Resp); - stop("too many pops: Lesp points into monitor area"); - bind(OK1); - sub(Resp, STACK_BIAS, Resp); - cmp(Resp, SP); - brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, OK2); - delayed()->add(Resp, STACK_BIAS + frame::memory_parameter_word_sp_offset * wordSize, Resp); - stop("too many pushes: Lesp points into register window"); - bind(OK2); -} -#endif // ASSERT - -// Load compiled (i2c) or interpreter entry when calling from interpreted and -// do the call. Centralized so that all interpreter calls will do the same actions. -// If jvmti single stepping is on for a thread we must not call compiled code. -void InterpreterMacroAssembler::call_from_interpreter(Register target, Register scratch, Register Rret) { - - // Assume we want to go compiled if available - - ld_ptr(G5_method, in_bytes(Method::from_interpreted_offset()), target); - - if (JvmtiExport::can_post_interpreter_events()) { - // JVMTI events, such as single-stepping, are implemented partly by avoiding running - // compiled code in threads for which the event is enabled. Check here for - // interp_only_mode if these events CAN be enabled. - verify_thread(); - Label skip_compiled_code; - - const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); - ld(interp_only, scratch); - cmp_zero_and_br(Assembler::notZero, scratch, skip_compiled_code, true, Assembler::pn); - delayed()->ld_ptr(G5_method, in_bytes(Method::interpreter_entry_offset()), target); - bind(skip_compiled_code); - } - - // the i2c_adapters need Method* in G5_method (right? %%%) - // do the call -#ifdef ASSERT - { - Label ok; - br_notnull_short(target, Assembler::pt, ok); - stop("null entry point"); - bind(ok); - } -#endif // ASSERT - - // Adjust Rret first so Llast_SP can be same as Rret - add(Rret, -frame::pc_return_offset, O7); - add(Lesp, BytesPerWord, Gargs); // setup parameter pointer - // Record SP so we can remove any stack space allocated by adapter transition - jmp(target, 0); - delayed()->mov(SP, Llast_SP); -} - -void InterpreterMacroAssembler::if_cmp(Condition cc, bool ptr_compare) { - assert_not_delayed(); - - Label not_taken; - if (ptr_compare) brx(cc, false, Assembler::pn, not_taken); - else br (cc, false, Assembler::pn, not_taken); - delayed()->nop(); - - TemplateTable::branch(false,false); - - bind(not_taken); - - profile_not_taken_branch(G3_scratch); -} - - -void InterpreterMacroAssembler::get_2_byte_integer_at_bcp( - int bcp_offset, - Register Rtmp, - Register Rdst, - signedOrNot is_signed, - setCCOrNot should_set_CC ) { - assert(Rtmp != Rdst, "need separate temp register"); - assert_not_delayed(); - switch (is_signed) { - default: ShouldNotReachHere(); - - case Signed: ldsb( Lbcp, bcp_offset, Rdst ); break; // high byte - case Unsigned: ldub( Lbcp, bcp_offset, Rdst ); break; // high byte - } - ldub( Lbcp, bcp_offset + 1, Rtmp ); // low byte - sll( Rdst, BitsPerByte, Rdst); - switch (should_set_CC ) { - default: ShouldNotReachHere(); - - case set_CC: orcc( Rdst, Rtmp, Rdst ); break; - case dont_set_CC: or3( Rdst, Rtmp, Rdst ); break; - } -} - - -void InterpreterMacroAssembler::get_4_byte_integer_at_bcp( - int bcp_offset, - Register Rtmp, - Register Rdst, - setCCOrNot should_set_CC ) { - assert(Rtmp != Rdst, "need separate temp register"); - assert_not_delayed(); - add( Lbcp, bcp_offset, Rtmp); - andcc( Rtmp, 3, G0); - Label aligned; - switch (should_set_CC ) { - default: ShouldNotReachHere(); - - case set_CC: break; - case dont_set_CC: break; - } - - br(Assembler::zero, true, Assembler::pn, aligned); - delayed()->ldsw(Rtmp, 0, Rdst); - - ldub(Lbcp, bcp_offset + 3, Rdst); - ldub(Lbcp, bcp_offset + 2, Rtmp); sll(Rtmp, 8, Rtmp); or3(Rtmp, Rdst, Rdst); - ldub(Lbcp, bcp_offset + 1, Rtmp); sll(Rtmp, 16, Rtmp); or3(Rtmp, Rdst, Rdst); - ldsb(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); - or3(Rtmp, Rdst, Rdst ); - - bind(aligned); - if (should_set_CC == set_CC) tst(Rdst); -} - -void InterpreterMacroAssembler::get_cache_index_at_bcp(Register temp, Register index, - int bcp_offset, size_t index_size) { - assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); - if (index_size == sizeof(u2)) { - get_2_byte_integer_at_bcp(bcp_offset, temp, index, Unsigned); - } else if (index_size == sizeof(u4)) { - get_4_byte_integer_at_bcp(bcp_offset, temp, index); - assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); - xor3(index, -1, index); // convert to plain index - } else if (index_size == sizeof(u1)) { - ldub(Lbcp, bcp_offset, index); - } else { - ShouldNotReachHere(); - } -} - - -void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register tmp, - int bcp_offset, size_t index_size) { - assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); - assert_different_registers(cache, tmp); - assert_not_delayed(); - get_cache_index_at_bcp(cache, tmp, bcp_offset, index_size); - // convert from field index to ConstantPoolCacheEntry index and from - // word index to byte offset - sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp); - add(LcpoolCache, tmp, cache); -} - - -void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, - Register temp, - Register bytecode, - int byte_no, - int bcp_offset, - size_t index_size) { - get_cache_and_index_at_bcp(cache, temp, bcp_offset, index_size); - ld_ptr(cache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset(), bytecode); - const int shift_count = (1 + byte_no) * BitsPerByte; - assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) || - (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift), - "correct shift count"); - srl(bytecode, shift_count, bytecode); - assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); - and3(bytecode, ConstantPoolCacheEntry::bytecode_1_mask, bytecode); -} - - -void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, - int bcp_offset, size_t index_size) { - assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); - assert_different_registers(cache, tmp); - assert_not_delayed(); - if (index_size == sizeof(u2)) { - get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned); - } else { - ShouldNotReachHere(); // other sizes not supported here - } - // convert from field index to ConstantPoolCacheEntry index - // and from word index to byte offset - sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp); - // skip past the header - add(tmp, in_bytes(ConstantPoolCache::base_offset()), tmp); - // construct pointer to cache entry - add(LcpoolCache, tmp, cache); -} - - -// Load object from cpool->resolved_references(index) -void InterpreterMacroAssembler::load_resolved_reference_at_index( - Register result, Register index, Register tmp) { - assert_different_registers(result, index, tmp); - assert_not_delayed(); - // convert from field index to resolved_references() index and from - // word index to byte offset. Since this is a java object, it can be compressed - sll(index, LogBytesPerHeapOop, index); - get_constant_pool(result); - // load pointer for resolved_references[] objArray - ld_ptr(result, ConstantPool::cache_offset_in_bytes(), result); - ld_ptr(result, ConstantPoolCache::resolved_references_offset_in_bytes(), result); - resolve_oop_handle(result, tmp); - // Add in the index - add(result, index, result); - load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result, tmp); - // The resulting oop is null if the reference is not yet resolved. - // It is Universe::the_null_sentinel() if the reference resolved to NULL via condy. -} - - -// load cpool->resolved_klass_at(index) -void InterpreterMacroAssembler::load_resolved_klass_at_offset(Register Rcpool, - Register Roffset, Register Rklass) { - // int value = *this_cp->int_at_addr(which); - // int resolved_klass_index = extract_low_short_from_int(value); - // - // Because SPARC is big-endian, the low_short is at (cpool->int_at_addr(which) + 2 bytes) - add(Roffset, Rcpool, Roffset); - lduh(Roffset, sizeof(ConstantPool) + 2, Roffset); // Roffset = resolved_klass_index - - Register Rresolved_klasses = Rklass; - ld_ptr(Rcpool, ConstantPool::resolved_klasses_offset_in_bytes(), Rresolved_klasses); - sll(Roffset, LogBytesPerWord, Roffset); - add(Roffset, Array::base_offset_in_bytes(), Roffset); - ld_ptr(Rresolved_klasses, Roffset, Rklass); -} - - -// Generate a subtype check: branch to ok_is_subtype if sub_klass is -// a subtype of super_klass. Blows registers Rsuper_klass, Rsub_klass, tmp1, tmp2. -void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, - Register Rsuper_klass, - Register Rtmp1, - Register Rtmp2, - Register Rtmp3, - Label &ok_is_subtype ) { - Label not_subtype; - - // Profile the not-null value's klass. - profile_typecheck(Rsub_klass, Rtmp1); - - check_klass_subtype_fast_path(Rsub_klass, Rsuper_klass, - Rtmp1, Rtmp2, - &ok_is_subtype, ¬_subtype, NULL); - - check_klass_subtype_slow_path(Rsub_klass, Rsuper_klass, - Rtmp1, Rtmp2, Rtmp3, /*hack:*/ noreg, - &ok_is_subtype, NULL); - - bind(not_subtype); - profile_typecheck_failed(Rtmp1); -} - -// Separate these two to allow for delay slot in middle -// These are used to do a test and full jump to exception-throwing code. - -// %%%%% Could possibly reoptimize this by testing to see if could use -// a single conditional branch (i.e. if span is small enough. -// If you go that route, than get rid of the split and give up -// on the delay-slot hack. - -void InterpreterMacroAssembler::throw_if_not_1_icc( Condition ok_condition, - Label& ok ) { - assert_not_delayed(); - br(ok_condition, true, pt, ok); - // DELAY SLOT -} - -void InterpreterMacroAssembler::throw_if_not_1_xcc( Condition ok_condition, - Label& ok ) { - assert_not_delayed(); - bp( ok_condition, true, Assembler::xcc, pt, ok); - // DELAY SLOT -} - -void InterpreterMacroAssembler::throw_if_not_1_x( Condition ok_condition, - Label& ok ) { - assert_not_delayed(); - brx(ok_condition, true, pt, ok); - // DELAY SLOT -} - -void InterpreterMacroAssembler::throw_if_not_2( address throw_entry_point, - Register Rscratch, - Label& ok ) { - assert(throw_entry_point != NULL, "entry point must be generated by now"); - AddressLiteral dest(throw_entry_point); - jump_to(dest, Rscratch); - delayed()->nop(); - bind(ok); -} - - -// And if you cannot use the delay slot, here is a shorthand: - -void InterpreterMacroAssembler::throw_if_not_icc( Condition ok_condition, - address throw_entry_point, - Register Rscratch ) { - Label ok; - if (ok_condition != never) { - throw_if_not_1_icc( ok_condition, ok); - delayed()->nop(); - } - throw_if_not_2( throw_entry_point, Rscratch, ok); -} -void InterpreterMacroAssembler::throw_if_not_xcc( Condition ok_condition, - address throw_entry_point, - Register Rscratch ) { - Label ok; - if (ok_condition != never) { - throw_if_not_1_xcc( ok_condition, ok); - delayed()->nop(); - } - throw_if_not_2( throw_entry_point, Rscratch, ok); -} -void InterpreterMacroAssembler::throw_if_not_x( Condition ok_condition, - address throw_entry_point, - Register Rscratch ) { - Label ok; - if (ok_condition != never) { - throw_if_not_1_x( ok_condition, ok); - delayed()->nop(); - } - throw_if_not_2( throw_entry_point, Rscratch, ok); -} - -// Check that index is in range for array, then shift index by index_shift, and put arrayOop + shifted_index into res -// Note: res is still shy of address by array offset into object. - -void InterpreterMacroAssembler::index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res) { - assert_not_delayed(); - - verify_oop(array); - // Sign extend since tos (index) can be a 32bit value. - sra(index, G0, index); - - // Check array. - Label ptr_ok; - tst(array); - throw_if_not_1_x(notZero, ptr_ok); - delayed()->ld(array, arrayOopDesc::length_offset_in_bytes(), tmp); // Check index. - throw_if_not_2(Interpreter::_throw_NullPointerException_entry, G3_scratch, ptr_ok); - - Label index_ok; - cmp(index, tmp); - throw_if_not_1_icc(lessUnsigned, index_ok); - if (index_shift > 0) { - delayed()->sll(index, index_shift, index); - } else { - delayed()->add(array, index, res); // addr - const offset in index - } - // Pass the array to create more detailed exceptions. - // Convention: move aberrant index into Otos_i for exception message. - mov(index, Otos_i); - mov(array, G3_scratch); - throw_if_not_2(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry, G4_scratch, index_ok); - - // add offset if didn't do it in delay slot - if (index_shift > 0) { add(array, index, res); } // addr - const offset in index -} - - -void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { - assert_not_delayed(); - - // pop array - pop_ptr(array); - - // check array - index_check_without_pop(array, index, index_shift, tmp, res); -} - - -void InterpreterMacroAssembler::get_const(Register Rdst) { - ld_ptr(Lmethod, in_bytes(Method::const_offset()), Rdst); -} - - -void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { - get_const(Rdst); - ld_ptr(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); -} - - -void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { - get_constant_pool(Rdst); - ld_ptr(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); -} - - -void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { - get_constant_pool(Rcpool); - ld_ptr(Rcpool, ConstantPool::tags_offset_in_bytes(), Rtags); -} - - -// unlock if synchronized method -// -// Unlock the receiver if this is a synchronized method. -// Unlock any Java monitors from syncronized blocks. -// -// If there are locked Java monitors -// If throw_monitor_exception -// throws IllegalMonitorStateException -// Else if install_monitor_exception -// installs IllegalMonitorStateException -// Else -// no error processing -void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, - bool throw_monitor_exception, - bool install_monitor_exception) { - Label unlocked, unlock, no_unlock; - - // get the value of _do_not_unlock_if_synchronized into G1_scratch - const Address do_not_unlock_if_synchronized(G2_thread, - JavaThread::do_not_unlock_if_synchronized_offset()); - ldbool(do_not_unlock_if_synchronized, G1_scratch); - stbool(G0, do_not_unlock_if_synchronized); // reset the flag - - // check if synchronized method - const Address access_flags(Lmethod, Method::access_flags_offset()); - interp_verify_oop(Otos_i, state, __FILE__, __LINE__); - push(state); // save tos - ld(access_flags, G3_scratch); // Load access flags. - btst(JVM_ACC_SYNCHRONIZED, G3_scratch); - br(zero, false, pt, unlocked); - delayed()->nop(); - - // Don't unlock anything if the _do_not_unlock_if_synchronized flag - // is set. - cmp_zero_and_br(Assembler::notZero, G1_scratch, no_unlock); - delayed()->nop(); - - // BasicObjectLock will be first in list, since this is a synchronized method. However, need - // to check that the object has not been unlocked by an explicit monitorexit bytecode. - - //Intel: if (throw_monitor_exception) ... else ... - // Entry already unlocked, need to throw exception - //... - - // pass top-most monitor elem - add( top_most_monitor(), O1 ); - - ld_ptr(O1, BasicObjectLock::obj_offset_in_bytes(), G3_scratch); - br_notnull_short(G3_scratch, pt, unlock); - - if (throw_monitor_exception) { - // Entry already unlocked need to throw an exception - MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); - should_not_reach_here(); - } else { - // Monitor already unlocked during a stack unroll. - // If requested, install an illegal_monitor_state_exception. - // Continue with stack unrolling. - if (install_monitor_exception) { - MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); - } - ba_short(unlocked); - } - - bind(unlock); - - unlock_object(O1); - - bind(unlocked); - - // I0, I1: Might contain return value - - // Check that all monitors are unlocked - { Label loop, exception, entry, restart; - - Register Rmptr = O0; - Register Rtemp = O1; - Register Rlimit = Lmonitors; - const jint delta = frame::interpreter_frame_monitor_size() * wordSize; - assert( (delta & LongAlignmentMask) == 0, - "sizeof BasicObjectLock must be even number of doublewords"); - - #ifdef ASSERT - add(top_most_monitor(), Rmptr, delta); - { Label L; - // ensure that Rmptr starts out above (or at) Rlimit - cmp_and_brx_short(Rmptr, Rlimit, Assembler::greaterEqualUnsigned, pn, L); - stop("monitor stack has negative size"); - bind(L); - } - #endif - bind(restart); - ba(entry); - delayed()-> - add(top_most_monitor(), Rmptr, delta); // points to current entry, starting with bottom-most entry - - // Entry is still locked, need to throw exception - bind(exception); - if (throw_monitor_exception) { - MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); - should_not_reach_here(); - } else { - // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. - // Unlock does not block, so don't have to worry about the frame - unlock_object(Rmptr); - if (install_monitor_exception) { - MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); - } - ba_short(restart); - } - - bind(loop); - cmp(Rtemp, G0); // check if current entry is used - brx(Assembler::notEqual, false, pn, exception); - delayed()-> - dec(Rmptr, delta); // otherwise advance to next entry - #ifdef ASSERT - { Label L; - // ensure that Rmptr has not somehow stepped below Rlimit - cmp_and_brx_short(Rmptr, Rlimit, Assembler::greaterEqualUnsigned, pn, L); - stop("ran off the end of the monitor stack"); - bind(L); - } - #endif - bind(entry); - cmp(Rmptr, Rlimit); // check if bottom reached - brx(Assembler::notEqual, true, pn, loop); // if not at bottom then check this entry - delayed()-> - ld_ptr(Rmptr, BasicObjectLock::obj_offset_in_bytes() - delta, Rtemp); - } - - bind(no_unlock); - pop(state); - interp_verify_oop(Otos_i, state, __FILE__, __LINE__); -} - -void InterpreterMacroAssembler::narrow(Register result) { - - ld_ptr(Address(Lmethod, Method::const_offset()), G3_scratch); - ldub(G3_scratch, in_bytes(ConstMethod::result_type_offset()), G3_scratch); - - Label notBool, notByte, notChar, done; - - // common case first - cmp(G3_scratch, T_INT); - br(Assembler::equal, true, pn, done); - delayed()->nop(); - - cmp(G3_scratch, T_BOOLEAN); - br(Assembler::notEqual, true, pn, notBool); - delayed()->cmp(G3_scratch, T_BYTE); - and3(result, 1, result); - ba(done); - delayed()->nop(); - - bind(notBool); - // cmp(G3_scratch, T_BYTE); - br(Assembler::notEqual, true, pn, notByte); - delayed()->cmp(G3_scratch, T_CHAR); - sll(result, 24, result); - sra(result, 24, result); - ba(done); - delayed()->nop(); - - bind(notByte); - // cmp(G3_scratch, T_CHAR); - sll(result, 16, result); - br(Assembler::notEqual, true, pn, done); - delayed()->sra(result, 16, result); - // sll(result, 16, result); - srl(result, 16, result); - - // bind(notChar); - // must be short, instructions already executed in delay slot - // sll(result, 16, result); - // sra(result, 16, result); - - bind(done); -} - -// remove activation -// -// Unlock the receiver if this is a synchronized method. -// Unlock any Java monitors from syncronized blocks. -// Remove the activation from the stack. -// -// If there are locked Java monitors -// If throw_monitor_exception -// throws IllegalMonitorStateException -// Else if install_monitor_exception -// installs IllegalMonitorStateException -// Else -// no error processing -void InterpreterMacroAssembler::remove_activation(TosState state, - bool throw_monitor_exception, - bool install_monitor_exception) { - - unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); - - // save result (push state before jvmti call and pop it afterwards) and notify jvmti - notify_method_exit(false, state, NotifyJVMTI); - - if (StackReservedPages > 0) { - // testing if Stack Reserved Area needs to be re-enabled - Label no_reserved_zone_enabling; - ld_ptr(G2_thread, JavaThread::reserved_stack_activation_offset(), G3_scratch); - cmp_and_brx_short(SP, G3_scratch, Assembler::lessUnsigned, Assembler::pt, no_reserved_zone_enabling); - - call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::enable_stack_reserved_zone), G2_thread); - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_delayed_StackOverflowError), G2_thread); - should_not_reach_here(); - - bind(no_reserved_zone_enabling); - } - - interp_verify_oop(Otos_i, state, __FILE__, __LINE__); - verify_thread(); - - // return tos - assert(Otos_l1 == Otos_i, "adjust code below"); - switch (state) { - case ltos: mov(Otos_l, Otos_l->after_save()); break; // O0 -> I0 - case btos: // fall through - case ztos: // fall through - case ctos: - case stos: // fall through - case atos: // fall through - case itos: mov(Otos_l1, Otos_l1->after_save()); break; // O0 -> I0 - case ftos: // fall through - case dtos: // fall through - case vtos: /* nothing to do */ break; - default : ShouldNotReachHere(); - } -} - -// Lock object -// -// Argument - lock_reg points to the BasicObjectLock to be used for locking, -// it must be initialized with the object to lock -void InterpreterMacroAssembler::lock_object(Register lock_reg, Register Object) { - if (UseHeavyMonitors) { - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); - } - else { - Register obj_reg = Object; - Register mark_reg = G4_scratch; - Register temp_reg = G1_scratch; - Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes()); - Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes()); - Label done; - - Label slow_case; - - assert_different_registers(lock_reg, obj_reg, mark_reg, temp_reg); - - // load markWord from object into mark_reg - ld_ptr(mark_addr, mark_reg); - - if (UseBiasedLocking) { - biased_locking_enter(obj_reg, mark_reg, temp_reg, done, &slow_case); - } - - // get the address of basicLock on stack that will be stored in the object - // we need a temporary register here as we do not want to clobber lock_reg - // (cas clobbers the destination register) - mov(lock_reg, temp_reg); - // set mark reg to be (markWord of object | UNLOCK_VALUE) - or3(mark_reg, markWord::unlocked_value, mark_reg); - // initialize the box (Must happen before we update the object mark!) - st_ptr(mark_reg, lock_addr, BasicLock::displaced_header_offset_in_bytes()); - // compare and exchange object_addr, markWord | 1, stack address of basicLock - assert(mark_addr.disp() == 0, "cas must take a zero displacement"); - cas_ptr(mark_addr.base(), mark_reg, temp_reg); - - // if the compare and exchange succeeded we are done (we saw an unlocked object) - cmp_and_brx_short(mark_reg, temp_reg, Assembler::equal, Assembler::pt, done); - - // We did not see an unlocked object so try the fast recursive case - - // Check if owner is self by comparing the value in the markWord of object - // with the stack pointer - sub(temp_reg, SP, temp_reg); - sub(temp_reg, STACK_BIAS, temp_reg); - assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); - - // Composite "andcc" test: - // (a) %sp -vs- markword proximity check, and, - // (b) verify mark word LSBs == 0 (Stack-locked). - // - // FFFFF003/FFFFFFFFFFFF003 is (markWord::lock_mask_in_place | -os::vm_page_size()) - // Note that the page size used for %sp proximity testing is arbitrary and is - // unrelated to the actual MMU page size. We use a 'logical' page size of - // 4096 bytes. F..FFF003 is designed to fit conveniently in the SIMM13 immediate - // field of the andcc instruction. - andcc (temp_reg, 0xFFFFF003, G0) ; - - // if condition is true we are done and hence we can store 0 in the displaced - // header indicating it is a recursive lock and be done - brx(Assembler::zero, true, Assembler::pt, done); - delayed()->st_ptr(G0, lock_addr, BasicLock::displaced_header_offset_in_bytes()); - - // none of the above fast optimizations worked so we have to get into the - // slow case of monitor enter - bind(slow_case); - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); - - bind(done); - } -} - -// Unlocks an object. Used in monitorexit bytecode and remove_activation. -// -// Argument - lock_reg points to the BasicObjectLock for lock -// Throw IllegalMonitorException if object is not locked by current thread -void InterpreterMacroAssembler::unlock_object(Register lock_reg) { - if (UseHeavyMonitors) { - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); - } else { - Register obj_reg = G3_scratch; - Register mark_reg = G4_scratch; - Register displaced_header_reg = G1_scratch; - Address lockobj_addr(lock_reg, BasicObjectLock::obj_offset_in_bytes()); - Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes()); - Label done; - - if (UseBiasedLocking) { - // load the object out of the BasicObjectLock - ld_ptr(lockobj_addr, obj_reg); - biased_locking_exit(mark_addr, mark_reg, done, true); - st_ptr(G0, lockobj_addr); // free entry - } - - // Test first if we are in the fast recursive case - Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes() + BasicLock::displaced_header_offset_in_bytes()); - ld_ptr(lock_addr, displaced_header_reg); - br_null(displaced_header_reg, true, Assembler::pn, done); - delayed()->st_ptr(G0, lockobj_addr); // free entry - - // See if it is still a light weight lock, if so we just unlock - // the object and we are done - - if (!UseBiasedLocking) { - // load the object out of the BasicObjectLock - ld_ptr(lockobj_addr, obj_reg); - } - - // we have the displaced header in displaced_header_reg - // we expect to see the stack address of the basicLock in case the - // lock is still a light weight lock (lock_reg) - assert(mark_addr.disp() == 0, "cas must take a zero displacement"); - cas_ptr(mark_addr.base(), lock_reg, displaced_header_reg); - cmp(lock_reg, displaced_header_reg); - brx(Assembler::equal, true, Assembler::pn, done); - delayed()->st_ptr(G0, lockobj_addr); // free entry - - // The lock has been converted into a heavy lock and hence - // we need to get into the slow case - - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); - - bind(done); - } -} - -// Get the method data pointer from the Method* and set the -// specified register to its value. - -void InterpreterMacroAssembler::set_method_data_pointer() { - assert(ProfileInterpreter, "must be profiling interpreter"); - Label get_continue; - - ld_ptr(Lmethod, in_bytes(Method::method_data_offset()), ImethodDataPtr); - test_method_data_pointer(get_continue); - add(ImethodDataPtr, in_bytes(MethodData::data_offset()), ImethodDataPtr); - bind(get_continue); -} - -// Set the method data pointer for the current bcp. - -void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { - assert(ProfileInterpreter, "must be profiling interpreter"); - Label zero_continue; - - // Test MDO to avoid the call if it is NULL. - ld_ptr(Lmethod, in_bytes(Method::method_data_offset()), ImethodDataPtr); - test_method_data_pointer(zero_continue); - call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), Lmethod, Lbcp); - add(ImethodDataPtr, in_bytes(MethodData::data_offset()), ImethodDataPtr); - add(ImethodDataPtr, O0, ImethodDataPtr); - bind(zero_continue); -} - -// Test ImethodDataPtr. If it is null, continue at the specified label - -void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { - assert(ProfileInterpreter, "must be profiling interpreter"); - br_null_short(ImethodDataPtr, Assembler::pn, zero_continue); -} - -void InterpreterMacroAssembler::verify_method_data_pointer() { - assert(ProfileInterpreter, "must be profiling interpreter"); -#ifdef ASSERT - Label verify_continue; - test_method_data_pointer(verify_continue); - - // If the mdp is valid, it will point to a DataLayout header which is - // consistent with the bcp. The converse is highly probable also. - lduh(ImethodDataPtr, in_bytes(DataLayout::bci_offset()), G3_scratch); - ld_ptr(Lmethod, Method::const_offset(), O5); - add(G3_scratch, in_bytes(ConstMethod::codes_offset()), G3_scratch); - add(G3_scratch, O5, G3_scratch); - cmp(Lbcp, G3_scratch); - brx(Assembler::equal, false, Assembler::pt, verify_continue); - - Register temp_reg = O5; - delayed()->mov(ImethodDataPtr, temp_reg); - // %%% should use call_VM_leaf here? - //call_VM_leaf(noreg, ..., Lmethod, Lbcp, ImethodDataPtr); - save_frame_and_mov(sizeof(jdouble) / wordSize, Lmethod, O0, Lbcp, O1); - Address d_save(FP, -sizeof(jdouble) + STACK_BIAS); - stf(FloatRegisterImpl::D, Ftos_d, d_save); - mov(temp_reg->after_save(), O2); - save_thread(L7_thread_cache); - call(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), relocInfo::none); - delayed()->nop(); - restore_thread(L7_thread_cache); - ldf(FloatRegisterImpl::D, d_save, Ftos_d); - restore(); - bind(verify_continue); -#endif // ASSERT -} - -void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, - Register method_counters, - Register Rtmp, - Label &profile_continue) { - assert(ProfileInterpreter, "must be profiling interpreter"); - // Control will flow to "profile_continue" if the counter is less than the - // limit or if we call profile_method() - - Label done; - - // if no method data exists, and the counter is high enough, make one - br_notnull_short(ImethodDataPtr, Assembler::pn, done); - - // Test to see if we should create a method data oop - Address profile_limit(method_counters, MethodCounters::interpreter_profile_limit_offset()); - ld(profile_limit, Rtmp); - cmp(invocation_count, Rtmp); - // Use long branches because call_VM() code and following code generated by - // test_backedge_count_for_osr() is large in debug VM. - br(Assembler::lessUnsigned, false, Assembler::pn, profile_continue); - delayed()->nop(); - - // Build it now. - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); - set_method_data_pointer_for_bcp(); - ba(profile_continue); - delayed()->nop(); - bind(done); -} - -// Store a value at some constant offset from the method data pointer. - -void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { - assert(ProfileInterpreter, "must be profiling interpreter"); - st_ptr(value, ImethodDataPtr, constant); -} - -void InterpreterMacroAssembler::increment_mdp_data_at(Address counter, - Register bumped_count, - bool decrement) { - assert(ProfileInterpreter, "must be profiling interpreter"); - - // Load the counter. - ld_ptr(counter, bumped_count); - - if (decrement) { - // Decrement the register. Set condition codes. - subcc(bumped_count, DataLayout::counter_increment, bumped_count); - - // If the decrement causes the counter to overflow, stay negative - Label L; - brx(Assembler::negative, true, Assembler::pn, L); - - // Store the decremented counter, if it is still negative. - delayed()->st_ptr(bumped_count, counter); - bind(L); - } else { - // Increment the register. Set carry flag. - addcc(bumped_count, DataLayout::counter_increment, bumped_count); - - // If the increment causes the counter to overflow, pull back by 1. - assert(DataLayout::counter_increment == 1, "subc works"); - subc(bumped_count, G0, bumped_count); - - // Store the incremented counter. - st_ptr(bumped_count, counter); - } -} - -// Increment the value at some constant offset from the method data pointer. - -void InterpreterMacroAssembler::increment_mdp_data_at(int constant, - Register bumped_count, - bool decrement) { - // Locate the counter at a fixed offset from the mdp: - Address counter(ImethodDataPtr, constant); - increment_mdp_data_at(counter, bumped_count, decrement); -} - -// Increment the value at some non-fixed (reg + constant) offset from -// the method data pointer. - -void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, - int constant, - Register bumped_count, - Register scratch2, - bool decrement) { - // Add the constant to reg to get the offset. - add(ImethodDataPtr, reg, scratch2); - Address counter(scratch2, constant); - increment_mdp_data_at(counter, bumped_count, decrement); -} - -// Set a flag value at the current method data pointer position. -// Updates a single byte of the header, to avoid races with other header bits. - -void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, - Register scratch) { - assert(ProfileInterpreter, "must be profiling interpreter"); - // Load the data header - ldub(ImethodDataPtr, in_bytes(DataLayout::flags_offset()), scratch); - - // Set the flag - or3(scratch, flag_constant, scratch); - - // Store the modified header. - stb(scratch, ImethodDataPtr, in_bytes(DataLayout::flags_offset())); -} - -// Test the location at some offset from the method data pointer. -// If it is not equal to value, branch to the not_equal_continue Label. -// Set condition codes to match the nullness of the loaded value. - -void InterpreterMacroAssembler::test_mdp_data_at(int offset, - Register value, - Label& not_equal_continue, - Register scratch) { - assert(ProfileInterpreter, "must be profiling interpreter"); - ld_ptr(ImethodDataPtr, offset, scratch); - cmp(value, scratch); - brx(Assembler::notEqual, false, Assembler::pn, not_equal_continue); - delayed()->tst(scratch); -} - -// Update the method data pointer by the displacement located at some fixed -// offset from the method data pointer. - -void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, - Register scratch) { - assert(ProfileInterpreter, "must be profiling interpreter"); - ld_ptr(ImethodDataPtr, offset_of_disp, scratch); - add(ImethodDataPtr, scratch, ImethodDataPtr); -} - -// Update the method data pointer by the displacement located at the -// offset (reg + offset_of_disp). - -void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, - int offset_of_disp, - Register scratch) { - assert(ProfileInterpreter, "must be profiling interpreter"); - add(reg, offset_of_disp, scratch); - ld_ptr(ImethodDataPtr, scratch, scratch); - add(ImethodDataPtr, scratch, ImethodDataPtr); -} - -// Update the method data pointer by a simple constant displacement. - -void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { - assert(ProfileInterpreter, "must be profiling interpreter"); - add(ImethodDataPtr, constant, ImethodDataPtr); -} - -// Update the method data pointer for a _ret bytecode whose target -// was not among our cached targets. - -void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, - Register return_bci) { - assert(ProfileInterpreter, "must be profiling interpreter"); - push(state); - st_ptr(return_bci, l_tmp); // protect return_bci, in case it is volatile - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); - ld_ptr(l_tmp, return_bci); - pop(state); -} - -// Count a taken branch in the bytecodes. - -void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - // We are taking a branch. Increment the taken count. - increment_mdp_data_at(in_bytes(JumpData::taken_offset()), bumped_count); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); - bind (profile_continue); - } -} - - -// Count a not-taken branch in the bytecodes. - -void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - // We are taking a branch. Increment the not taken count. - increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch); - - // The method data pointer needs to be updated to correspond to the - // next bytecode. - update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); - bind (profile_continue); - } -} - - -// Count a non-virtual call in the bytecodes. - -void InterpreterMacroAssembler::profile_call(Register scratch) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - // We are making a call. Increment the count. - increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); - bind (profile_continue); - } -} - - -// Count a final call in the bytecodes. - -void InterpreterMacroAssembler::profile_final_call(Register scratch) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - // We are making a call. Increment the count. - increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); - bind (profile_continue); - } -} - - -// Count a virtual call in the bytecodes. - -void InterpreterMacroAssembler::profile_virtual_call(Register receiver, - Register scratch, - bool receiver_can_be_null) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - - Label skip_receiver_profile; - if (receiver_can_be_null) { - Label not_null; - br_notnull_short(receiver, Assembler::pt, not_null); - // We are making a call. Increment the count for null receiver. - increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); - ba_short(skip_receiver_profile); - bind(not_null); - } - - // Record the receiver type. - record_klass_in_profile(receiver, scratch, true); - bind(skip_receiver_profile); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); - bind(profile_continue); - } -} - -void InterpreterMacroAssembler::record_klass_in_profile_helper(Register receiver, Register scratch, - Label& done, bool is_virtual_call) { - if (TypeProfileWidth == 0) { - if (is_virtual_call) { - increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); - } -#if INCLUDE_JVMCI - else if (EnableJVMCI) { - increment_mdp_data_at(in_bytes(ReceiverTypeData::nonprofiled_receiver_count_offset()), scratch); - } -#endif - } else { - int non_profiled_offset = -1; - if (is_virtual_call) { - non_profiled_offset = in_bytes(CounterData::count_offset()); - } -#if INCLUDE_JVMCI - else if (EnableJVMCI) { - non_profiled_offset = in_bytes(ReceiverTypeData::nonprofiled_receiver_count_offset()); - } -#endif - - record_item_in_profile_helper(receiver, scratch, 0, done, TypeProfileWidth, - &VirtualCallData::receiver_offset, &VirtualCallData::receiver_count_offset, non_profiled_offset); - } -} - -void InterpreterMacroAssembler::record_item_in_profile_helper(Register item, - Register scratch, int start_row, Label& done, int total_rows, - OffsetFunction item_offset_fn, OffsetFunction item_count_offset_fn, - int non_profiled_offset) { - int last_row = total_rows - 1; - assert(start_row <= last_row, "must be work left to do"); - // Test this row for both the item and for null. - // Take any of three different outcomes: - // 1. found item => increment count and goto done - // 2. found null => keep looking for case 1, maybe allocate this cell - // 3. found something else => keep looking for cases 1 and 2 - // Case 3 is handled by a recursive call. - for (int row = start_row; row <= last_row; row++) { - Label next_test; - bool test_for_null_also = (row == start_row); - - // See if the item is item[n]. - int item_offset = in_bytes(item_offset_fn(row)); - test_mdp_data_at(item_offset, item, next_test, scratch); - // delayed()->tst(scratch); - - // The receiver is item[n]. Increment count[n]. - int count_offset = in_bytes(item_count_offset_fn(row)); - increment_mdp_data_at(count_offset, scratch); - ba_short(done); - bind(next_test); - - if (test_for_null_also) { - Label found_null; - // Failed the equality check on item[n]... Test for null. - if (start_row == last_row) { - // The only thing left to do is handle the null case. - if (non_profiled_offset >= 0) { - brx(Assembler::zero, false, Assembler::pn, found_null); - delayed()->nop(); - // Item did not match any saved item and there is no empty row for it. - // Increment total counter to indicate polymorphic case. - increment_mdp_data_at(non_profiled_offset, scratch); - ba_short(done); - bind(found_null); - } else { - brx(Assembler::notZero, false, Assembler::pt, done); - delayed()->nop(); - } - break; - } - // Since null is rare, make it be the branch-taken case. - brx(Assembler::zero, false, Assembler::pn, found_null); - delayed()->nop(); - - // Put all the "Case 3" tests here. - record_item_in_profile_helper(item, scratch, start_row + 1, done, total_rows, - item_offset_fn, item_count_offset_fn, non_profiled_offset); - - // Found a null. Keep searching for a matching item, - // but remember that this is an empty (unused) slot. - bind(found_null); - } - } - - // In the fall-through case, we found no matching item, but we - // observed the item[start_row] is NULL. - - // Fill in the item field and increment the count. - int item_offset = in_bytes(item_offset_fn(start_row)); - set_mdp_data_at(item_offset, item); - int count_offset = in_bytes(item_count_offset_fn(start_row)); - mov(DataLayout::counter_increment, scratch); - set_mdp_data_at(count_offset, scratch); - if (start_row > 0) { - ba_short(done); - } -} - -void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, - Register scratch, bool is_virtual_call) { - assert(ProfileInterpreter, "must be profiling"); - Label done; - - record_klass_in_profile_helper(receiver, scratch, done, is_virtual_call); - - bind (done); -} - - -// Count a ret in the bytecodes. - -void InterpreterMacroAssembler::profile_ret(TosState state, - Register return_bci, - Register scratch) { - if (ProfileInterpreter) { - Label profile_continue; - uint row; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - // Update the total ret count. - increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); - - for (row = 0; row < RetData::row_limit(); row++) { - Label next_test; - - // See if return_bci is equal to bci[n]: - test_mdp_data_at(in_bytes(RetData::bci_offset(row)), - return_bci, next_test, scratch); - - // return_bci is equal to bci[n]. Increment the count. - increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch); - ba_short(profile_continue); - bind(next_test); - } - - update_mdp_for_ret(state, return_bci); - - bind (profile_continue); - } -} - -// Profile an unexpected null in the bytecodes. -void InterpreterMacroAssembler::profile_null_seen(Register scratch) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - set_mdp_flag_at(BitData::null_seen_byte_constant(), scratch); - - // The method data pointer needs to be updated. - int mdp_delta = in_bytes(BitData::bit_data_size()); - if (TypeProfileCasts) { - mdp_delta = in_bytes(ReceiverTypeData::receiver_type_data_size()); - } - update_mdp_by_constant(mdp_delta); - - bind (profile_continue); - } -} - -void InterpreterMacroAssembler::profile_typecheck(Register klass, - Register scratch) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - int mdp_delta = in_bytes(BitData::bit_data_size()); - if (TypeProfileCasts) { - mdp_delta = in_bytes(ReceiverTypeData::receiver_type_data_size()); - - // Record the object type. - record_klass_in_profile(klass, scratch, false); - } - - // The method data pointer needs to be updated. - update_mdp_by_constant(mdp_delta); - - bind (profile_continue); - } -} - -void InterpreterMacroAssembler::profile_typecheck_failed(Register scratch) { - if (ProfileInterpreter && TypeProfileCasts) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - int count_offset = in_bytes(CounterData::count_offset()); - // Back up the address, since we have already bumped the mdp. - count_offset -= in_bytes(ReceiverTypeData::receiver_type_data_size()); - - // *Decrement* the counter. We expect to see zero or small negatives. - increment_mdp_data_at(count_offset, scratch, true); - - bind (profile_continue); - } -} - -// Count the default case of a switch construct. - -void InterpreterMacroAssembler::profile_switch_default(Register scratch) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - // Update the default case count - increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), - scratch); - - // The method data pointer needs to be updated. - update_mdp_by_offset( - in_bytes(MultiBranchData::default_displacement_offset()), - scratch); - - bind (profile_continue); - } -} - -// Count the index'th case of a switch construct. - -void InterpreterMacroAssembler::profile_switch_case(Register index, - Register scratch, - Register scratch2, - Register scratch3) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(profile_continue); - - // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() - set(in_bytes(MultiBranchData::per_case_size()), scratch); - smul(index, scratch, scratch); - add(scratch, in_bytes(MultiBranchData::case_array_offset()), scratch); - - // Update the case count - increment_mdp_data_at(scratch, - in_bytes(MultiBranchData::relative_count_offset()), - scratch2, - scratch3); - - // The method data pointer needs to be updated. - update_mdp_by_offset(scratch, - in_bytes(MultiBranchData::relative_displacement_offset()), - scratch2); - - bind (profile_continue); - } -} - -void InterpreterMacroAssembler::profile_obj_type(Register obj, const Address& mdo_addr, Register tmp) { - Label not_null, do_nothing, do_update; - - assert_different_registers(obj, mdo_addr.base(), tmp); - - verify_oop(obj); - - ld_ptr(mdo_addr, tmp); - - br_notnull_short(obj, pt, not_null); - or3(tmp, TypeEntries::null_seen, tmp); - ba_short(do_update); - - bind(not_null); - load_klass(obj, obj); - - xor3(obj, tmp, obj); - btst(TypeEntries::type_klass_mask, obj); - // klass seen before, nothing to do. The unknown bit may have been - // set already but no need to check. - brx(zero, false, pt, do_nothing); - delayed()-> - - btst(TypeEntries::type_unknown, obj); - // already unknown. Nothing to do anymore. - brx(notZero, false, pt, do_nothing); - delayed()-> - - btst(TypeEntries::type_mask, tmp); - brx(zero, true, pt, do_update); - // first time here. Set profile type. - delayed()->or3(tmp, obj, tmp); - - // different than before. Cannot keep accurate profile. - or3(tmp, TypeEntries::type_unknown, tmp); - - bind(do_update); - // update profile - st_ptr(tmp, mdo_addr); - - bind(do_nothing); -} - -void InterpreterMacroAssembler::profile_arguments_type(Register callee, Register tmp1, Register tmp2, bool is_virtual) { - if (!ProfileInterpreter) { - return; - } - - assert_different_registers(callee, tmp1, tmp2, ImethodDataPtr); - - if (MethodData::profile_arguments() || MethodData::profile_return()) { - Label profile_continue; - - test_method_data_pointer(profile_continue); - - int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size()); - - ldub(ImethodDataPtr, in_bytes(DataLayout::tag_offset()) - off_to_start, tmp1); - cmp_and_br_short(tmp1, is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag, notEqual, pn, profile_continue); - - if (MethodData::profile_arguments()) { - Label done; - int off_to_args = in_bytes(TypeEntriesAtCall::args_data_offset()); - add(ImethodDataPtr, off_to_args, ImethodDataPtr); - - for (int i = 0; i < TypeProfileArgsLimit; i++) { - if (i > 0 || MethodData::profile_return()) { - // If return value type is profiled we may have no argument to profile - ld_ptr(ImethodDataPtr, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, tmp1); - sub(tmp1, i*TypeStackSlotEntries::per_arg_count(), tmp1); - cmp_and_br_short(tmp1, TypeStackSlotEntries::per_arg_count(), less, pn, done); - } - ld_ptr(Address(callee, Method::const_offset()), tmp1); - lduh(Address(tmp1, ConstMethod::size_of_parameters_offset()), tmp1); - // stack offset o (zero based) from the start of the argument - // list, for n arguments translates into offset n - o - 1 from - // the end of the argument list. But there's an extra slot at - // the stop of the stack. So the offset is n - o from Lesp. - ld_ptr(ImethodDataPtr, in_bytes(TypeEntriesAtCall::stack_slot_offset(i))-off_to_args, tmp2); - sub(tmp1, tmp2, tmp1); - - // Can't use MacroAssembler::argument_address() which needs Gargs to be set up - sll(tmp1, Interpreter::logStackElementSize, tmp1); - ld_ptr(Lesp, tmp1, tmp1); - - Address mdo_arg_addr(ImethodDataPtr, in_bytes(TypeEntriesAtCall::argument_type_offset(i))-off_to_args); - profile_obj_type(tmp1, mdo_arg_addr, tmp2); - - int to_add = in_bytes(TypeStackSlotEntries::per_arg_size()); - add(ImethodDataPtr, to_add, ImethodDataPtr); - off_to_args += to_add; - } - - if (MethodData::profile_return()) { - ld_ptr(ImethodDataPtr, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, tmp1); - sub(tmp1, TypeProfileArgsLimit*TypeStackSlotEntries::per_arg_count(), tmp1); - } - - bind(done); - - if (MethodData::profile_return()) { - // We're right after the type profile for the last - // argument. tmp1 is the number of cells left in the - // CallTypeData/VirtualCallTypeData to reach its end. Non null - // if there's a return to profile. - assert(ReturnTypeEntry::static_cell_count() < TypeStackSlotEntries::per_arg_count(), "can't move past ret type"); - sll(tmp1, exact_log2(DataLayout::cell_size), tmp1); - add(ImethodDataPtr, tmp1, ImethodDataPtr); - } - } else { - assert(MethodData::profile_return(), "either profile call args or call ret"); - update_mdp_by_constant(in_bytes(TypeEntriesAtCall::return_only_size())); - } - - // mdp points right after the end of the - // CallTypeData/VirtualCallTypeData, right after the cells for the - // return value type if there's one. - - bind(profile_continue); - } -} - -void InterpreterMacroAssembler::profile_return_type(Register ret, Register tmp1, Register tmp2) { - assert_different_registers(ret, tmp1, tmp2); - if (ProfileInterpreter && MethodData::profile_return()) { - Label profile_continue, done; - - test_method_data_pointer(profile_continue); - - if (MethodData::profile_return_jsr292_only()) { - assert(Method::intrinsic_id_size_in_bytes() == 2, "assuming Method::_intrinsic_id is u2"); - - // If we don't profile all invoke bytecodes we must make sure - // it's a bytecode we indeed profile. We can't go back to the - // begining of the ProfileData we intend to update to check its - // type because we're right after it and we don't known its - // length. - Label do_profile; - ldub(Lbcp, 0, tmp1); - cmp_and_br_short(tmp1, Bytecodes::_invokedynamic, equal, pn, do_profile); - cmp(tmp1, Bytecodes::_invokehandle); - br(equal, false, pn, do_profile); - delayed()->lduh(Lmethod, Method::intrinsic_id_offset_in_bytes(), tmp1); - cmp_and_br_short(tmp1, vmIntrinsics::_compiledLambdaForm, notEqual, pt, profile_continue); - - bind(do_profile); - } - - Address mdo_ret_addr(ImethodDataPtr, -in_bytes(ReturnTypeEntry::size())); - mov(ret, tmp1); - profile_obj_type(tmp1, mdo_ret_addr, tmp2); - - bind(profile_continue); - } -} - -void InterpreterMacroAssembler::profile_parameters_type(Register tmp1, Register tmp2, Register tmp3, Register tmp4) { - if (ProfileInterpreter && MethodData::profile_parameters()) { - Label profile_continue, done; - - test_method_data_pointer(profile_continue); - - // Load the offset of the area within the MDO used for - // parameters. If it's negative we're not profiling any parameters. - lduw(ImethodDataPtr, in_bytes(MethodData::parameters_type_data_di_offset()) - in_bytes(MethodData::data_offset()), tmp1); - cmp_and_br_short(tmp1, 0, less, pn, profile_continue); - - // Compute a pointer to the area for parameters from the offset - // and move the pointer to the slot for the last - // parameters. Collect profiling from last parameter down. - // mdo start + parameters offset + array length - 1 - - // Pointer to the parameter area in the MDO - Register mdp = tmp1; - add(ImethodDataPtr, tmp1, mdp); - - // offset of the current profile entry to update - Register entry_offset = tmp2; - // entry_offset = array len in number of cells - ld_ptr(mdp, ArrayData::array_len_offset(), entry_offset); - - int off_base = in_bytes(ParametersTypeData::stack_slot_offset(0)); - assert(off_base % DataLayout::cell_size == 0, "should be a number of cells"); - - // entry_offset (number of cells) = array len - size of 1 entry + offset of the stack slot field - sub(entry_offset, TypeStackSlotEntries::per_arg_count() - (off_base / DataLayout::cell_size), entry_offset); - // entry_offset in bytes - sll(entry_offset, exact_log2(DataLayout::cell_size), entry_offset); - - Label loop; - bind(loop); - - // load offset on the stack from the slot for this parameter - ld_ptr(mdp, entry_offset, tmp3); - sll(tmp3,Interpreter::logStackElementSize, tmp3); - neg(tmp3); - // read the parameter from the local area - ld_ptr(Llocals, tmp3, tmp3); - - // make entry_offset now point to the type field for this parameter - int type_base = in_bytes(ParametersTypeData::type_offset(0)); - assert(type_base > off_base, "unexpected"); - add(entry_offset, type_base - off_base, entry_offset); - - // profile the parameter - Address arg_type(mdp, entry_offset); - profile_obj_type(tmp3, arg_type, tmp4); - - // go to next parameter - sub(entry_offset, TypeStackSlotEntries::per_arg_count() * DataLayout::cell_size + (type_base - off_base), entry_offset); - cmp_and_br_short(entry_offset, off_base, greaterEqual, pt, loop); - - bind(profile_continue); - } -} - -// add a InterpMonitorElem to stack (see frame_sparc.hpp) - -void InterpreterMacroAssembler::add_monitor_to_stack( bool stack_is_empty, - Register Rtemp, - Register Rtemp2 ) { - - Register Rlimit = Lmonitors; - const jint delta = frame::interpreter_frame_monitor_size() * wordSize; - assert( (delta & LongAlignmentMask) == 0, - "sizeof BasicObjectLock must be even number of doublewords"); - - sub( SP, delta, SP); - sub( Lesp, delta, Lesp); - sub( Lmonitors, delta, Lmonitors); - - if (!stack_is_empty) { - - // must copy stack contents down - - Label start_copying, next; - - // untested("monitor stack expansion"); - compute_stack_base(Rtemp); - ba(start_copying); - delayed()->cmp(Rtemp, Rlimit); // done? duplicated below - - // note: must copy from low memory upwards - // On entry to loop, - // Rtemp points to new base of stack, Lesp points to new end of stack (1 past TOS) - // Loop mutates Rtemp - - bind( next); - - st_ptr(Rtemp2, Rtemp, 0); - inc(Rtemp, wordSize); - cmp(Rtemp, Rlimit); // are we done? (duplicated above) - - bind( start_copying ); - - brx( notEqual, true, pn, next ); - delayed()->ld_ptr( Rtemp, delta, Rtemp2 ); - - // done copying stack - } -} - -// Locals -void InterpreterMacroAssembler::access_local_ptr( Register index, Register dst ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); - ld_ptr(index, 0, dst); - // Note: index must hold the effective address--the iinc template uses it -} - -// Just like access_local_ptr but the tag is a returnAddress -void InterpreterMacroAssembler::access_local_returnAddress(Register index, - Register dst ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); - ld_ptr(index, 0, dst); -} - -void InterpreterMacroAssembler::access_local_int( Register index, Register dst ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); - ld(index, 0, dst); - // Note: index must hold the effective address--the iinc template uses it -} - - -void InterpreterMacroAssembler::access_local_long( Register index, Register dst ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); - // First half stored at index n+1 (which grows down from Llocals[n]) - load_unaligned_long(index, Interpreter::local_offset_in_bytes(1), dst); -} - - -void InterpreterMacroAssembler::access_local_float( Register index, FloatRegister dst ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); - ldf(FloatRegisterImpl::S, index, 0, dst); -} - - -void InterpreterMacroAssembler::access_local_double( Register index, FloatRegister dst ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); - load_unaligned_double(index, Interpreter::local_offset_in_bytes(1), dst); -} - - -#ifdef ASSERT -void InterpreterMacroAssembler::check_for_regarea_stomp(Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1) { - Label L; - - assert(Rindex != Rscratch, "Registers cannot be same"); - assert(Rindex != Rscratch1, "Registers cannot be same"); - assert(Rlimit != Rscratch, "Registers cannot be same"); - assert(Rlimit != Rscratch1, "Registers cannot be same"); - assert(Rscratch1 != Rscratch, "Registers cannot be same"); - - // untested("reg area corruption"); - add(Rindex, offset, Rscratch); - add(Rlimit, 64 + STACK_BIAS, Rscratch1); - cmp_and_brx_short(Rscratch, Rscratch1, Assembler::greaterEqualUnsigned, pn, L); - stop("regsave area is being clobbered"); - bind(L); -} -#endif // ASSERT - - -void InterpreterMacroAssembler::store_local_int( Register index, Register src ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); - debug_only(check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch);) - st(src, index, 0); -} - -void InterpreterMacroAssembler::store_local_ptr( Register index, Register src ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); -#ifdef ASSERT - check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch); -#endif - st_ptr(src, index, 0); -} - - - -void InterpreterMacroAssembler::store_local_ptr( int n, Register src ) { - st_ptr(src, Llocals, Interpreter::local_offset_in_bytes(n)); -} - -void InterpreterMacroAssembler::store_local_long( Register index, Register src ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); -#ifdef ASSERT - check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch); -#endif - store_unaligned_long(src, index, Interpreter::local_offset_in_bytes(1)); // which is n+1 -} - - -void InterpreterMacroAssembler::store_local_float( Register index, FloatRegister src ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); -#ifdef ASSERT - check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch); -#endif - stf(FloatRegisterImpl::S, src, index, 0); -} - - -void InterpreterMacroAssembler::store_local_double( Register index, FloatRegister src ) { - assert_not_delayed(); - sll(index, Interpreter::logStackElementSize, index); - sub(Llocals, index, index); -#ifdef ASSERT - check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch); -#endif - store_unaligned_double(src, index, Interpreter::local_offset_in_bytes(1)); -} - - -int InterpreterMacroAssembler::top_most_monitor_byte_offset() { - const jint delta = frame::interpreter_frame_monitor_size() * wordSize; - int rounded_vm_local_words = align_up((int)frame::interpreter_frame_vm_local_words, WordsPerLong); - return ((-rounded_vm_local_words * wordSize) - delta ) + STACK_BIAS; -} - - -Address InterpreterMacroAssembler::top_most_monitor() { - return Address(FP, top_most_monitor_byte_offset()); -} - - -void InterpreterMacroAssembler::compute_stack_base( Register Rdest ) { - add( Lesp, wordSize, Rdest ); -} - -void InterpreterMacroAssembler::get_method_counters(Register method, - Register Rcounters, - Label& skip) { - Label has_counters; - Address method_counters(method, in_bytes(Method::method_counters_offset())); - ld_ptr(method_counters, Rcounters); - br_notnull_short(Rcounters, Assembler::pt, has_counters); - call_VM(noreg, CAST_FROM_FN_PTR(address, - InterpreterRuntime::build_method_counters), method); - ld_ptr(method_counters, Rcounters); - br_null(Rcounters, false, Assembler::pn, skip); // No MethodCounters, OutOfMemory - delayed()->nop(); - bind(has_counters); -} - -void InterpreterMacroAssembler::increment_invocation_counter( Register Rcounters, Register Rtmp, Register Rtmp2 ) { - assert(UseCompiler || LogTouchedMethods, "incrementing must be useful"); - assert_different_registers(Rcounters, Rtmp, Rtmp2); - - Address inv_counter(Rcounters, MethodCounters::invocation_counter_offset() + - InvocationCounter::counter_offset()); - Address be_counter (Rcounters, MethodCounters::backedge_counter_offset() + - InvocationCounter::counter_offset()); - int delta = InvocationCounter::count_increment; - - // Load each counter in a register - ld( inv_counter, Rtmp ); - ld( be_counter, Rtmp2 ); - - assert( is_simm13( delta ), " delta too large."); - - // Add the delta to the invocation counter and store the result - add( Rtmp, delta, Rtmp ); - - // Mask the backedge counter - and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 ); - - // Store value - st( Rtmp, inv_counter); - - // Add invocation counter + backedge counter - add( Rtmp, Rtmp2, Rtmp); - - // Note that this macro must leave the backedge_count + invocation_count in Rtmp! -} - -void InterpreterMacroAssembler::increment_backedge_counter( Register Rcounters, Register Rtmp, Register Rtmp2 ) { - assert(UseCompiler, "incrementing must be useful"); - assert_different_registers(Rcounters, Rtmp, Rtmp2); - - Address be_counter (Rcounters, MethodCounters::backedge_counter_offset() + - InvocationCounter::counter_offset()); - Address inv_counter(Rcounters, MethodCounters::invocation_counter_offset() + - InvocationCounter::counter_offset()); - - int delta = InvocationCounter::count_increment; - // Load each counter in a register - ld( be_counter, Rtmp ); - ld( inv_counter, Rtmp2 ); - - // Add the delta to the backedge counter - add( Rtmp, delta, Rtmp ); - - // Mask the invocation counter, add to backedge counter - and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 ); - - // and store the result to memory - st( Rtmp, be_counter ); - - // Add backedge + invocation counter - add( Rtmp, Rtmp2, Rtmp ); - - // Note that this macro must leave backedge_count + invocation_count in Rtmp! -} - -void InterpreterMacroAssembler::test_backedge_count_for_osr( Register backedge_count, - Register method_counters, - Register branch_bcp, - Register Rtmp ) { - Label did_not_overflow; - Label overflow_with_error; - assert_different_registers(backedge_count, Rtmp, branch_bcp); - assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); - - Address limit(method_counters, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())); - ld(limit, Rtmp); - cmp_and_br_short(backedge_count, Rtmp, Assembler::lessUnsigned, Assembler::pt, did_not_overflow); - - // When ProfileInterpreter is on, the backedge_count comes from the - // MethodData*, which value does not get reset on the call to - // frequency_counter_overflow(). To avoid excessive calls to the overflow - // routine while the method is being compiled, add a second test to make sure - // the overflow function is called only once every overflow_frequency. - if (ProfileInterpreter) { - const int overflow_frequency = 1024; - andcc(backedge_count, overflow_frequency-1, Rtmp); - brx(Assembler::notZero, false, Assembler::pt, did_not_overflow); - delayed()->nop(); - } - - // overflow in loop, pass branch bytecode - set(6,Rtmp); - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, Rtmp); - - // Was an OSR adapter generated? - // O0 = osr nmethod - br_null_short(O0, Assembler::pn, overflow_with_error); - - // Has the nmethod been invalidated already? - ldub(O0, nmethod::state_offset(), O2); - cmp_and_br_short(O2, nmethod::in_use, Assembler::notEqual, Assembler::pn, overflow_with_error); - - // migrate the interpreter frame off of the stack - - mov(G2_thread, L7); - // save nmethod - mov(O0, L6); - set_last_Java_frame(SP, noreg); - call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), L7); - reset_last_Java_frame(); - mov(L7, G2_thread); - - // move OSR nmethod to I1 - mov(L6, I1); - - // OSR buffer to I0 - mov(O0, I0); - - // remove the interpreter frame - restore(I5_savedSP, 0, SP); - - // Jump to the osr code. - ld_ptr(O1, nmethod::osr_entry_point_offset(), O2); - jmp(O2, G0); - delayed()->nop(); - - bind(overflow_with_error); - - bind(did_not_overflow); -} - - - -void InterpreterMacroAssembler::interp_verify_oop(Register reg, TosState state, const char * file, int line) { - if (state == atos) { MacroAssembler::_verify_oop(reg, "broken oop ", file, line); } -} - - -// local helper function for the verify_oop_or_return_address macro -static bool verify_return_address(Method* m, int bci) { -#ifndef PRODUCT - address pc = (address)(m->constMethod()) - + in_bytes(ConstMethod::codes_offset()) + bci; - // assume it is a valid return address if it is inside m and is preceded by a jsr - if (!m->contains(pc)) return false; - address jsr_pc; - jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); - if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; - jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); - if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; -#endif // PRODUCT - return false; -} - - -void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { - if (!VerifyOops) return; - // the VM documentation for the astore[_wide] bytecode allows - // the TOS to be not only an oop but also a return address - Label test; - Label skip; - // See if it is an address (in the current method): - - mov(reg, Rtmp); - const int log2_bytecode_size_limit = 16; - srl(Rtmp, log2_bytecode_size_limit, Rtmp); - br_notnull_short( Rtmp, pt, test ); - - // %%% should use call_VM_leaf here? - save_frame_and_mov(0, Lmethod, O0, reg, O1); - save_thread(L7_thread_cache); - call(CAST_FROM_FN_PTR(address,verify_return_address), relocInfo::none); - delayed()->nop(); - restore_thread(L7_thread_cache); - br_notnull( O0, false, pt, skip ); - delayed()->restore(); - - // Perform a more elaborate out-of-line call - // Not an address; verify it: - bind(test); - verify_oop(reg); - bind(skip); -} - - -// Jump if ((*counter_addr += increment) & mask) satisfies the condition. -void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, - int increment, Address mask_addr, - Register scratch1, Register scratch2, - Condition cond, Label *where) { - ld(counter_addr, scratch1); - add(scratch1, increment, scratch1); - ld(mask_addr, scratch2); - andcc(scratch1, scratch2, G0); - br(cond, false, Assembler::pn, *where); - delayed()->st(scratch1, counter_addr); -} - -// Inline assembly for: -// -// if (thread is in interp_only_mode) { -// InterpreterRuntime::post_method_entry(); -// } -// if (DTraceMethodProbes) { -// SharedRuntime::dtrace_method_entry(method, receiver); -// } -// if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { -// SharedRuntime::rc_trace_method_entry(method, receiver); -// } - -void InterpreterMacroAssembler::notify_method_entry() { - - // Whenever JVMTI puts a thread in interp_only_mode, method - // entry/exit events are sent for that thread to track stack - // depth. If it is possible to enter interp_only_mode we add - // the code to check if the event should be sent. - if (JvmtiExport::can_post_interpreter_events()) { - Label L; - Register temp_reg = O5; - const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); - ld(interp_only, temp_reg); - cmp_and_br_short(temp_reg, 0, equal, pt, L); - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); - bind(L); - } - - { - Register temp_reg = O5; - SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero); - call_VM_leaf(noreg, - CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), - G2_thread, Lmethod); - } - - // RedefineClasses() tracing support for obsolete method entry - if (log_is_enabled(Trace, redefine, class, obsolete)) { - call_VM_leaf(noreg, - CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), - G2_thread, Lmethod); - } -} - - -// Inline assembly for: -// -// if (thread is in interp_only_mode) { -// // save result -// InterpreterRuntime::post_method_exit(); -// // restore result -// } -// if (DTraceMethodProbes) { -// SharedRuntime::dtrace_method_exit(thread, method); -// } -// -// Native methods have their result stored in d_tmp and l_tmp -// Java methods have their result stored in the expression stack - -void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, - TosState state, - NotifyMethodExitMode mode) { - - // Whenever JVMTI puts a thread in interp_only_mode, method - // entry/exit events are sent for that thread to track stack - // depth. If it is possible to enter interp_only_mode we add - // the code to check if the event should be sent. - if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { - Label L; - Register temp_reg = O5; - const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); - ld(interp_only, temp_reg); - cmp_and_br_short(temp_reg, 0, equal, pt, L); - - // Note: frame::interpreter_frame_result has a dependency on how the - // method result is saved across the call to post_method_exit. For - // native methods it assumes the result registers are saved to - // l_scratch and d_scratch. If this changes then the interpreter_frame_result - // implementation will need to be updated too. - - save_return_value(state, is_native_method); - call_VM(noreg, - CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); - restore_return_value(state, is_native_method); - bind(L); - } - - { - Register temp_reg = O5; - // Dtrace notification - SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero); - save_return_value(state, is_native_method); - call_VM_leaf( - noreg, - CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), - G2_thread, Lmethod); - restore_return_value(state, is_native_method); - } -} - -void InterpreterMacroAssembler::save_return_value(TosState state, bool is_native_call) { - if (is_native_call) { - stf(FloatRegisterImpl::D, F0, d_tmp); - stx(O0, l_tmp); - } else { - push(state); - } -} - -void InterpreterMacroAssembler::restore_return_value( TosState state, bool is_native_call) { - if (is_native_call) { - ldf(FloatRegisterImpl::D, d_tmp, F0); - ldx(l_tmp, O0); - } else { - pop(state); - } -}