| /* |
| * Copyright (c) 1997, 2016, 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 "interp_masm_sparc.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "interpreter/interpreterRuntime.hpp" |
| #include "oops/arrayOop.hpp" |
| #include "oops/markOop.hpp" |
| #include "oops/methodData.hpp" |
| #include "oops/method.hpp" |
| #include "oops/methodCounters.hpp" |
| #include "prims/jvmtiExport.hpp" |
| #include "prims/jvmtiRedefineClassesTrace.hpp" |
| #include "prims/jvmtiThreadState.hpp" |
| #include "runtime/basicLock.hpp" |
| #include "runtime/biasedLocking.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "runtime/thread.inline.hpp" |
| |
| #ifndef CC_INTERP |
| #ifndef FAST_DISPATCH |
| #define FAST_DISPATCH 1 |
| #endif |
| #undef FAST_DISPATCH |
| |
| // 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); |
| |
| #else // CC_INTERP |
| #ifndef STATE |
| #define STATE(field_name) Lstate, in_bytes(byte_offset_of(BytecodeInterpreter, field_name)) |
| #endif // STATE |
| |
| #endif // CC_INTERP |
| |
| 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); |
| round_to(delta, WordsPerLong); // make multiple of 2 (SP must be 2-word aligned) |
| sll(delta, LogBytesPerWord, delta); // extra space for locals in bytes |
| } |
| |
| #ifndef CC_INTERP |
| |
| // 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(); |
| #ifdef FAST_DISPATCH |
| // FAST_DISPATCH and ProfileInterpreter are mutually exclusive since |
| // they both use I2. |
| assert(!ProfileInterpreter, "FAST_DISPATCH and +ProfileInterpreter are mutually exclusive"); |
| ldub(Lbcp, bcp_incr, Lbyte_code); // load next bytecode |
| add(Lbyte_code, Interpreter::distance_from_dispatch_table(state), Lbyte_code); |
| // add offset to correct dispatch table |
| sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize |
| ld_ptr(IdispatchTables, Lbyte_code, IdispatchAddress);// get entry addr |
| #else |
| 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 |
| #endif |
| } |
| |
| |
| // 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(); |
| verify_FPU(1, state); |
| 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) { |
| // %%%% 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); |
| } |
| |
| |
| 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); |
| } |
| #endif /* CC_INTERP */ |
| |
| |
| #ifndef CC_INTERP |
| |
| 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) { |
| verify_FPU(1, state); |
| // %%%%% 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__); |
| #ifdef FAST_DISPATCH |
| if (table == Interpreter::dispatch_table(state)) { |
| // use IdispatchTables |
| add(Lbyte_code, Interpreter::distance_from_dispatch_table(state), Lbyte_code); |
| // add offset to correct dispatch table |
| sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize |
| ld_ptr(IdispatchTables, Lbyte_code, G3_scratch); // get entry addr |
| } else { |
| #endif |
| // dispatch table to use |
| AddressLiteral tbl(table); |
| sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize |
| set(tbl, G3_scratch); // compute addr of table |
| ld_ptr(G3_scratch, Lbyte_code, G3_scratch); // get entry addr |
| #ifdef FAST_DISPATCH |
| } |
| #endif |
| 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(); |
| |
| #ifdef _LP64 |
| ldf(FloatRegisterImpl::D, r1, offset, d); |
| #else |
| ldf(FloatRegisterImpl::S, r1, offset, d); |
| ldf(FloatRegisterImpl::S, r1, offset + Interpreter::stackElementSize, d->successor()); |
| #endif |
| } |
| |
| // Known good alignment in _LP64 but unknown otherwise |
| void InterpreterMacroAssembler::store_unaligned_double(FloatRegister d, Register r1, int offset) { |
| assert_not_delayed(); |
| |
| #ifdef _LP64 |
| stf(FloatRegisterImpl::D, d, r1, offset); |
| // store something more useful here |
| debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);) |
| #else |
| stf(FloatRegisterImpl::S, d, r1, offset); |
| stf(FloatRegisterImpl::S, d->successor(), r1, offset + Interpreter::stackElementSize); |
| #endif |
| } |
| |
| |
| // Known good alignment in _LP64 but unknown otherwise |
| void InterpreterMacroAssembler::load_unaligned_long(Register r1, int offset, Register rd) { |
| assert_not_delayed(); |
| #ifdef _LP64 |
| ldx(r1, offset, rd); |
| #else |
| ld(r1, offset, rd); |
| ld(r1, offset + Interpreter::stackElementSize, rd->successor()); |
| #endif |
| } |
| |
| // Known good alignment in _LP64 but unknown otherwise |
| void InterpreterMacroAssembler::store_unaligned_long(Register l, Register r1, int offset) { |
| assert_not_delayed(); |
| |
| #ifdef _LP64 |
| stx(l, r1, offset); |
| // store something more useful here |
| debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);) |
| #else |
| st(l, r1, offset); |
| st(l->successor(), r1, offset + Interpreter::stackElementSize); |
| #endif |
| } |
| |
| 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)); |
| #ifdef _LP64 |
| sub(Gframe_size, STACK_BIAS, Gframe_size ); |
| #endif |
| mov(Gframe_size, SP); |
| |
| bind(done); |
| } |
| |
| |
| #ifdef ASSERT |
| void InterpreterMacroAssembler::verify_sp(Register Rsp, Register Rtemp) { |
| Label Bad, OK; |
| |
| // Saved SP must be aligned. |
| #ifdef _LP64 |
| btst(2*BytesPerWord-1, Rsp); |
| #else |
| btst(LongAlignmentMask, Rsp); |
| #endif |
| 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); |
| #ifdef _LP64 |
| sub(Rtemp, STACK_BIAS, Rtemp); // Bias Rtemp before cmp to FP |
| #endif |
| 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); |
| #ifdef _LP64 |
| add(Rtemp, STACK_BIAS, Rtemp); // Unbias Rtemp before cmp to Rsp |
| #endif |
| 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); |
| #ifdef _LP64 |
| sub(Resp, STACK_BIAS, Resp); |
| #endif |
| 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); |
| #ifdef _LP64 |
| delayed()->ldsw(Rtmp, 0, Rdst); |
| #else |
| delayed()->ld(Rtmp, 0, Rdst); |
| #endif |
| |
| 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); |
| #ifdef _LP64 |
| ldsb(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); |
| #else |
| // Unsigned load is faster than signed on some implementations |
| ldub(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); |
| #endif |
| 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)) { |
| assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
| 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) { |
| assert_different_registers(result, index); |
| 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 |
| Register tmp = index; // reuse |
| sll(index, LogBytesPerHeapOop, tmp); |
| get_constant_pool(result); |
| // load pointer for resolved_references[] objArray |
| ld_ptr(result, ConstantPool::resolved_references_offset_in_bytes(), result); |
| // JNIHandles::resolve(result) |
| ld_ptr(result, 0, result); |
| // Add in the index |
| add(result, tmp, result); |
| load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result); |
| } |
| |
| |
| // 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); |
| #ifdef _LP64 |
| // sign extend since tos (index) can be a 32bit value |
| sra(index, G0, index); |
| #endif // _LP64 |
| |
| // 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 |
| // convention: move aberrant index into G3_scratch for exception message |
| mov(index, 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); |
| |
| interp_verify_oop(Otos_i, state, __FILE__, __LINE__); |
| verify_thread(); |
| |
| // return tos |
| assert(Otos_l1 == Otos_i, "adjust code below"); |
| switch (state) { |
| #ifdef _LP64 |
| case ltos: mov(Otos_l, Otos_l->after_save()); break; // O0 -> I0 |
| #else |
| case ltos: mov(Otos_l2, Otos_l2->after_save()); // fall through // O1 -> I1 |
| #endif |
| 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(); |
| } |
| |
| #if defined(COMPILER2) && !defined(_LP64) |
| if (state == ltos) { |
| // C2 expects long results in G1 we can't tell if we're returning to interpreted |
| // or compiled so just be safe use G1 and O0/O1 |
| |
| // Shift bits into high (msb) of G1 |
| sllx(Otos_l1->after_save(), 32, G1); |
| // Zero extend low bits |
| srl (Otos_l2->after_save(), 0, Otos_l2->after_save()); |
| or3 (Otos_l2->after_save(), G1, G1); |
| } |
| #endif /* COMPILER2 */ |
| |
| } |
| #endif /* CC_INTERP */ |
| |
| |
| // 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 markOop 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 (markOop of object | UNLOCK_VALUE) |
| or3(mark_reg, markOopDesc::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, markOop | 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 markOop of object |
| // with the stack pointer |
| sub(temp_reg, SP, temp_reg); |
| #ifdef _LP64 |
| sub(temp_reg, STACK_BIAS, temp_reg); |
| #endif |
| 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 (markOopDesc::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); |
| } |
| } |
| |
| #ifndef CC_INTERP |
| |
| // 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 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 |
| AddressLiteral profile_limit((address) &InvocationCounter::InterpreterProfileLimit); |
| sethi(profile_limit, Rtmp); |
| ld(Rtmp, profile_limit.low10(), 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, |
| int start_row, Label& done, bool is_virtual_call) { |
| if (TypeProfileWidth == 0) { |
| if (is_virtual_call) { |
| increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); |
| } |
| return; |
| } |
| |
| int last_row = VirtualCallData::row_limit() - 1; |
| assert(start_row <= last_row, "must be work left to do"); |
| // Test this row for both the receiver and for null. |
| // Take any of three different outcomes: |
| // 1. found receiver => 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 receiver is receiver[n]. |
| int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); |
| test_mdp_data_at(recvr_offset, receiver, next_test, scratch); |
| // delayed()->tst(scratch); |
| |
| // The receiver is receiver[n]. Increment count[n]. |
| int count_offset = in_bytes(VirtualCallData::receiver_count_offset(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 receiver[n]... Test for null. |
| if (start_row == last_row) { |
| // The only thing left to do is handle the null case. |
| if (is_virtual_call) { |
| brx(Assembler::zero, false, Assembler::pn, found_null); |
| delayed()->nop(); |
| // Receiver did not match any saved receiver and there is no empty row for it. |
| // Increment total counter to indicate polymorphic case. |
| increment_mdp_data_at(in_bytes(CounterData::count_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_klass_in_profile_helper(receiver, scratch, start_row + 1, done, is_virtual_call); |
| |
| // Found a null. Keep searching for a matching receiver, |
| // but remember that this is an empty (unused) slot. |
| bind(found_null); |
| } |
| } |
| |
| // In the fall-through case, we found no matching receiver, but we |
| // observed the receiver[start_row] is NULL. |
| |
| // Fill in the receiver field and increment the count. |
| int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); |
| set_mdp_data_at(recvr_offset, receiver); |
| int count_offset = in_bytes(VirtualCallData::receiver_count_offset(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, 0, 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(VirtualCallData::virtual_call_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(VirtualCallData::virtual_call_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(VirtualCallData::virtual_call_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()) { |
| // 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()->ldub(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 = ::round_to(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 ); |
| } |
| |
| #endif /* CC_INTERP */ |
| |
| 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, "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! |
| } |
| |
| #ifndef CC_INTERP |
| void InterpreterMacroAssembler::test_backedge_count_for_osr( Register backedge_count, |
| 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"); |
| |
| AddressLiteral limit(&InvocationCounter::InterpreterBackwardBranchLimit); |
| load_contents(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? |
| ld(O0, nmethod::entry_bci_offset(), O2); |
| cmp_and_br_short(O2, InvalidOSREntryBci, Assembler::equal, 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); |
| } |
| |
| |
| void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { |
| if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); |
| } |
| #endif /* CC_INTERP */ |
| |
| // 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() { |
| |
| // C++ interpreter only uses this for native methods. |
| |
| // 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 (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
| 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) { |
| // C++ interpreter only uses this for native methods. |
| |
| // 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) { |
| #ifdef CC_INTERP |
| // result potentially in O0/O1: save it across calls |
| stf(FloatRegisterImpl::D, F0, STATE(_native_fresult)); |
| #ifdef _LP64 |
| stx(O0, STATE(_native_lresult)); |
| #else |
| std(O0, STATE(_native_lresult)); |
| #endif |
| #else // CC_INTERP |
| if (is_native_call) { |
| stf(FloatRegisterImpl::D, F0, d_tmp); |
| #ifdef _LP64 |
| stx(O0, l_tmp); |
| #else |
| std(O0, l_tmp); |
| #endif |
| } else { |
| push(state); |
| } |
| #endif // CC_INTERP |
| } |
| |
| void InterpreterMacroAssembler::restore_return_value( TosState state, bool is_native_call) { |
| #ifdef CC_INTERP |
| ldf(FloatRegisterImpl::D, STATE(_native_fresult), F0); |
| #ifdef _LP64 |
| ldx(STATE(_native_lresult), O0); |
| #else |
| ldd(STATE(_native_lresult), O0); |
| #endif |
| #else // CC_INTERP |
| if (is_native_call) { |
| ldf(FloatRegisterImpl::D, d_tmp, F0); |
| #ifdef _LP64 |
| ldx(l_tmp, O0); |
| #else |
| ldd(l_tmp, O0); |
| #endif |
| } else { |
| pop(state); |
| } |
| #endif // CC_INTERP |
| } |
| |
| // Jump if ((*counter_addr += increment) & mask) satisfies the condition. |
| void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, |
| int increment, int mask, |
| Register scratch1, Register scratch2, |
| Condition cond, Label *where) { |
| ld(counter_addr, scratch1); |
| add(scratch1, increment, scratch1); |
| if (is_simm13(mask)) { |
| andcc(scratch1, mask, G0); |
| } else { |
| set(mask, scratch2); |
| andcc(scratch1, scratch2, G0); |
| } |
| br(cond, false, Assembler::pn, *where); |
| delayed()->st(scratch1, counter_addr); |
| } |