--- old/src/cpu/x86/vm/interp_masm_x86_32.cpp 2015-03-09 16:17:33.159744275 -0400 +++ /dev/null 2015-03-09 13:16:38.565362944 -0400 @@ -1,1444 +0,0 @@ -/* - * Copyright (c) 1997, 2014, 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_x86.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 "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" - - -// Implementation of InterpreterMacroAssembler -#ifdef CC_INTERP -void InterpreterMacroAssembler::get_method(Register reg) { - movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); - movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); -} -#endif // CC_INTERP - - -#ifndef CC_INTERP -void InterpreterMacroAssembler::call_VM_leaf_base( - address entry_point, - int number_of_arguments -) { - // interpreter specific - // - // Note: No need to save/restore bcp & locals (rsi & rdi) pointer - // since these are callee saved registers and no blocking/ - // GC can happen in leaf calls. - // Further Note: DO NOT save/restore bcp/locals. If a caller has - // already saved them so that it can use rsi/rdi as temporaries - // then a save/restore here will DESTROY the copy the caller - // saved! There used to be a save_bcp() that only happened in - // the ASSERT path (no restore_bcp). Which caused bizarre failures - // when jvm built with ASSERTs. -#ifdef ASSERT - { Label L; - cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); - jcc(Assembler::equal, L); - stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); - bind(L); - } -#endif - // super call - MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); - // interpreter specific - - // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals - // but since they may not have been saved (and we don't want to - // save them here (see note above) the assert is invalid. -} - - -void InterpreterMacroAssembler::call_VM_base( - Register oop_result, - Register java_thread, - Register last_java_sp, - address entry_point, - int number_of_arguments, - bool check_exceptions -) { -#ifdef ASSERT - { Label L; - cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); - jcc(Assembler::equal, L); - stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); - bind(L); - } -#endif /* ASSERT */ - // interpreter specific - // - // Note: Could avoid restoring locals ptr (callee saved) - however doesn't - // really make a difference for these runtime calls, since they are - // slow anyway. Btw., bcp must be saved/restored since it may change - // due to GC. - assert(java_thread == noreg , "not expecting a precomputed java thread"); - save_bcp(); - // super call - MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); - // interpreter specific - restore_bcp(); - restore_locals(); -} - - -void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { - if (JvmtiExport::can_pop_frame()) { - Label L; - // 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. - Register pop_cond = java_thread; // Not clear if any other register is available... - movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); - testl(pop_cond, JavaThread::popframe_pending_bit); - jcc(Assembler::zero, L); - testl(pop_cond, JavaThread::popframe_processing_bit); - jcc(Assembler::notZero, L); - // Call Interpreter::remove_activation_preserving_args_entry() to get the - // address of the same-named entrypoint in the generated interpreter code. - call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); - jmp(rax); - bind(L); - get_thread(java_thread); - } -} - - -void InterpreterMacroAssembler::load_earlyret_value(TosState state) { - get_thread(rcx); - movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); - const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); - const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); - const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); - const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() - + in_ByteSize(wordSize)); - switch (state) { - case atos: movptr(rax, oop_addr); - movptr(oop_addr, NULL_WORD); - verify_oop(rax, state); break; - case ltos: - movl(rdx, val_addr1); // fall through - case btos: // fall through - case ctos: // fall through - case stos: // fall through - case itos: movl(rax, val_addr); break; - case ftos: fld_s(val_addr); break; - case dtos: fld_d(val_addr); break; - case vtos: /* nothing to do */ break; - default : ShouldNotReachHere(); - } - // Clean up tos value in the thread object - movl(tos_addr, (int32_t) ilgl); - movptr(val_addr, NULL_WORD); - NOT_LP64(movptr(val_addr1, NULL_WORD)); -} - - -void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { - if (JvmtiExport::can_force_early_return()) { - Label L; - Register tmp = java_thread; - movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); - testptr(tmp, tmp); - jcc(Assembler::zero, 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. - movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); - cmpl(tmp, JvmtiThreadState::earlyret_pending); - jcc(Assembler::notEqual, L); - - // Call Interpreter::remove_activation_early_entry() to get the address of the - // same-named entrypoint in the generated interpreter code. - get_thread(java_thread); - movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); - pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); - call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); - jmp(rax); - bind(L); - get_thread(java_thread); - } -} - - -void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { - assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); - load_unsigned_short(reg, Address(rsi, bcp_offset)); - bswapl(reg); - shrl(reg, 16); -} - - -void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) { - assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); - if (index_size == sizeof(u2)) { - load_unsigned_short(reg, Address(rsi, bcp_offset)); - } else if (index_size == sizeof(u4)) { - movl(reg, Address(rsi, bcp_offset)); - // Check if the secondary index definition is still ~x, otherwise - // we have to change the following assembler code to calculate the - // plain index. - assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); - notl(reg); // convert to plain index - } else if (index_size == sizeof(u1)) { - load_unsigned_byte(reg, Address(rsi, bcp_offset)); - } else { - ShouldNotReachHere(); - } -} - - -void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, - int bcp_offset, size_t index_size) { - assert_different_registers(cache, index); - get_cache_index_at_bcp(index, bcp_offset, index_size); - movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); - assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); - assert(exact_log2(in_words(ConstantPoolCacheEntry::size())) == 2, "else change next line"); - shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index -} - - -void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, - Register index, - Register bytecode, - int byte_no, - int bcp_offset, - size_t index_size) { - get_cache_and_index_at_bcp(cache, index, bcp_offset, index_size); - movptr(bytecode, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset())); - 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"); - shrptr(bytecode, shift_count); - assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); - andptr(bytecode, ConstantPoolCacheEntry::bytecode_1_mask); -} - - -void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, - int bcp_offset, size_t index_size) { - assert(cache != tmp, "must use different register"); - get_cache_index_at_bcp(tmp, bcp_offset, index_size); - assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); - // convert from field index to ConstantPoolCacheEntry index - // and from word offset to byte offset - assert(exact_log2(in_bytes(ConstantPoolCacheEntry::size_in_bytes())) == 2 + LogBytesPerWord, "else change next line"); - shll(tmp, 2 + LogBytesPerWord); - movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); - // skip past the header - addptr(cache, in_bytes(ConstantPoolCache::base_offset())); - addptr(cache, tmp); // construct pointer to cache entry -} - -// Load object from cpool->resolved_references(index) -void InterpreterMacroAssembler::load_resolved_reference_at_index( - Register result, Register index) { - assert_different_registers(result, index); - // 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 - shll(tmp, LogBytesPerHeapOop); - - get_constant_pool(result); - // load pointer for resolved_references[] objArray - movptr(result, Address(result, ConstantPool::resolved_references_offset_in_bytes())); - // JNIHandles::resolve(obj); - movptr(result, Address(result, 0)); - // Add in the index - addptr(result, tmp); - load_heap_oop(result, Address(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); -} - - // Generate a subtype check: branch to ok_is_subtype if sub_klass is - // a subtype of super_klass. EAX holds the super_klass. Blows ECX. - // Resets EDI to locals. Register sub_klass cannot be any of the above. -void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { - assert( Rsub_klass != rax, "rax, holds superklass" ); - assert( Rsub_klass != rcx, "used as a temp" ); - assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); - - // Profile the not-null value's klass. - profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi - - // Do the check. - check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx - - // Profile the failure of the check. - profile_typecheck_failed(rcx); // blows rcx -} - -void InterpreterMacroAssembler::f2ieee() { - if (IEEEPrecision) { - fstp_s(Address(rsp, 0)); - fld_s(Address(rsp, 0)); - } -} - - -void InterpreterMacroAssembler::d2ieee() { - if (IEEEPrecision) { - fstp_d(Address(rsp, 0)); - fld_d(Address(rsp, 0)); - } -} - -// Java Expression Stack - -void InterpreterMacroAssembler::pop_ptr(Register r) { - pop(r); -} - -void InterpreterMacroAssembler::pop_i(Register r) { - pop(r); -} - -void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { - pop(lo); - pop(hi); -} - -void InterpreterMacroAssembler::pop_f() { - fld_s(Address(rsp, 0)); - addptr(rsp, 1 * wordSize); -} - -void InterpreterMacroAssembler::pop_d() { - fld_d(Address(rsp, 0)); - addptr(rsp, 2 * wordSize); -} - - -void InterpreterMacroAssembler::pop(TosState state) { - switch (state) { - case atos: pop_ptr(rax); break; - case btos: // fall through - case ctos: // fall through - case stos: // fall through - case itos: pop_i(rax); break; - case ltos: pop_l(rax, rdx); break; - case ftos: pop_f(); break; - case dtos: pop_d(); break; - case vtos: /* nothing to do */ break; - default : ShouldNotReachHere(); - } - verify_oop(rax, state); -} - -void InterpreterMacroAssembler::push_ptr(Register r) { - push(r); -} - -void InterpreterMacroAssembler::push_i(Register r) { - push(r); -} - -void InterpreterMacroAssembler::push_l(Register lo, Register hi) { - push(hi); - push(lo); -} - -void InterpreterMacroAssembler::push_f() { - // Do not schedule for no AGI! Never write beyond rsp! - subptr(rsp, 1 * wordSize); - fstp_s(Address(rsp, 0)); -} - -void InterpreterMacroAssembler::push_d(Register r) { - // Do not schedule for no AGI! Never write beyond rsp! - subptr(rsp, 2 * wordSize); - fstp_d(Address(rsp, 0)); -} - - -void InterpreterMacroAssembler::push(TosState state) { - verify_oop(rax, state); - switch (state) { - case atos: push_ptr(rax); break; - case btos: // fall through - case ctos: // fall through - case stos: // fall through - case itos: push_i(rax); break; - case ltos: push_l(rax, rdx); break; - case ftos: push_f(); break; - case dtos: push_d(rax); break; - case vtos: /* nothing to do */ break; - default : ShouldNotReachHere(); - } -} - - -// Helpers for swap and dup -void InterpreterMacroAssembler::load_ptr(int n, Register val) { - movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); -} - -void InterpreterMacroAssembler::store_ptr(int n, Register val) { - movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); -} - -void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { - // set sender sp - lea(rsi, Address(rsp, wordSize)); - // record last_sp - movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); -} - - -// Jump to from_interpreted entry of a call unless single stepping is possible -// in this thread in which case we must call the i2i entry -void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { - prepare_to_jump_from_interpreted(); - - if (JvmtiExport::can_post_interpreter_events()) { - Label run_compiled_code; - // 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. - get_thread(temp); - // interp_only is an int, on little endian it is sufficient to test the byte only - // Is a cmpl faster? - cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); - jccb(Assembler::zero, run_compiled_code); - jmp(Address(method, Method::interpreter_entry_offset())); - bind(run_compiled_code); - } - - jmp(Address(method, Method::from_interpreted_offset())); - -} - - -// The following two routines provide a hook so that an implementation -// can schedule the dispatch in two parts. Intel does not do this. -void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { - // Nothing Intel-specific to be done here. -} - -void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { - dispatch_next(state, step); -} - -void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, - bool verifyoop) { - verify_FPU(1, state); - if (VerifyActivationFrameSize) { - Label L; - mov(rcx, rbp); - subptr(rcx, rsp); - int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; - cmpptr(rcx, min_frame_size); - jcc(Assembler::greaterEqual, L); - stop("broken stack frame"); - bind(L); - } - if (verifyoop) verify_oop(rax, state); - Address index(noreg, rbx, Address::times_ptr); - ExternalAddress tbl((address)table); - ArrayAddress dispatch(tbl, index); - jump(dispatch); -} - - -void InterpreterMacroAssembler::dispatch_only(TosState state) { - dispatch_base(state, Interpreter::dispatch_table(state)); -} - - -void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { - dispatch_base(state, Interpreter::normal_table(state)); -} - -void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { - dispatch_base(state, Interpreter::normal_table(state), false); -} - - -void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { - // load next bytecode (load before advancing rsi to prevent AGI) - load_unsigned_byte(rbx, Address(rsi, step)); - // advance rsi - increment(rsi, step); - dispatch_base(state, Interpreter::dispatch_table(state)); -} - - -void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { - // load current bytecode - load_unsigned_byte(rbx, Address(rsi, 0)); - dispatch_base(state, table); -} - -// 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, Register ret_addr, - bool throw_monitor_exception, - bool install_monitor_exception, - bool notify_jvmdi) { - // Note: Registers rax, rdx and FPU ST(0) may be in use for the result - // check if synchronized method - Label unlocked, unlock, no_unlock; - - get_thread(rcx); - const Address do_not_unlock_if_synchronized(rcx, - in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); - - movbool(rbx, do_not_unlock_if_synchronized); - mov(rdi,rbx); - movbool(do_not_unlock_if_synchronized, false); // reset the flag - - movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags - movl(rcx, Address(rbx, Method::access_flags_offset())); - - testl(rcx, JVM_ACC_SYNCHRONIZED); - jcc(Assembler::zero, unlocked); - - // Don't unlock anything if the _do_not_unlock_if_synchronized flag - // is set. - mov(rcx,rdi); - testbool(rcx); - jcc(Assembler::notZero, no_unlock); - - // unlock monitor - push(state); // save result - - // 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. - const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); - lea (rdx, monitor); // address of first monitor - - movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); - testptr(rax, rax); - jcc (Assembler::notZero, unlock); - - pop(state); - if (throw_monitor_exception) { - empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow - - // Entry already unlocked, need to throw exception - 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) { - empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); - } - jmp(unlocked); - } - - bind(unlock); - unlock_object(rdx); - pop(state); - - // Check that for block-structured locking (i.e., that all locked objects has been unlocked) - bind(unlocked); - - // rax, rdx: Might contain return value - - // Check that all monitors are unlocked - { - Label loop, exception, entry, restart; - const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; - const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); - const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); - - bind(restart); - movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry - lea(rbx, monitor_block_bot); // points to word before bottom of monitor block - jmp(entry); - - // Entry already locked, need to throw exception - bind(exception); - - if (throw_monitor_exception) { - empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow - - // Throw exception - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); - should_not_reach_here(); - } else { - // Stack unrolling. Unlock object and install illegal_monitor_exception - // Unlock does not block, so don't have to worry about the frame - - push(state); - mov(rdx, rcx); - unlock_object(rdx); - pop(state); - - if (install_monitor_exception) { - empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); - } - - jmp(restart); - } - - bind(loop); - cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used - jcc(Assembler::notEqual, exception); - - addptr(rcx, entry_size); // otherwise advance to next entry - bind(entry); - cmpptr(rcx, rbx); // check if bottom reached - jcc(Assembler::notEqual, loop); // if not at bottom then check this entry - } - - bind(no_unlock); - - // jvmti support - if (notify_jvmdi) { - notify_method_exit(state, NotifyJVMTI); // preserve TOSCA - } else { - notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA - } - - // remove activation - movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp - leave(); // remove frame anchor - pop(ret_addr); // get return address - mov(rsp, rbx); // set sp to sender sp - if (UseSSE) { - // float and double are returned in xmm register in SSE-mode - if (state == ftos && UseSSE >= 1) { - subptr(rsp, wordSize); - fstp_s(Address(rsp, 0)); - movflt(xmm0, Address(rsp, 0)); - addptr(rsp, wordSize); - } else if (state == dtos && UseSSE >= 2) { - subptr(rsp, 2*wordSize); - fstp_d(Address(rsp, 0)); - movdbl(xmm0, Address(rsp, 0)); - addptr(rsp, 2*wordSize); - } - } -} - -#endif /* !CC_INTERP */ - -void InterpreterMacroAssembler::get_method_counters(Register method, - Register mcs, Label& skip) { - Label has_counters; - movptr(mcs, Address(method, Method::method_counters_offset())); - testptr(mcs, mcs); - jcc(Assembler::notZero, has_counters); - call_VM(noreg, CAST_FROM_FN_PTR(address, - InterpreterRuntime::build_method_counters), method); - movptr(mcs, Address(method,Method::method_counters_offset())); - testptr(mcs, mcs); - jcc(Assembler::zero, skip); // No MethodCounters allocated, OutOfMemory - bind(has_counters); -} - - -// Lock object -// -// Argument: rdx : Points to BasicObjectLock to be used for locking. Must -// be initialized with object to lock -void InterpreterMacroAssembler::lock_object(Register lock_reg) { - assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); - - if (UseHeavyMonitors) { - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); - } else { - - Label done; - - const Register swap_reg = rax; // Must use rax, for cmpxchg instruction - const Register obj_reg = rcx; // Will contain the oop - - const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); - const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); - const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); - - Label slow_case; - - // Load object pointer into obj_reg %rcx - movptr(obj_reg, Address(lock_reg, obj_offset)); - - if (UseBiasedLocking) { - // Note: we use noreg for the temporary register since it's hard - // to come up with a free register on all incoming code paths - biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); - } - - // Load immediate 1 into swap_reg %rax, - movptr(swap_reg, (int32_t)1); - - // Load (object->mark() | 1) into swap_reg %rax, - orptr(swap_reg, Address(obj_reg, 0)); - - // Save (object->mark() | 1) into BasicLock's displaced header - movptr(Address(lock_reg, mark_offset), swap_reg); - - assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); - if (os::is_MP()) { - lock(); - } - cmpxchgptr(lock_reg, Address(obj_reg, 0)); - if (PrintBiasedLockingStatistics) { - cond_inc32(Assembler::zero, - ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); - } - jcc(Assembler::zero, done); - - // Test if the oopMark is an obvious stack pointer, i.e., - // 1) (mark & 3) == 0, and - // 2) rsp <= mark < mark + os::pagesize() - // - // These 3 tests can be done by evaluating the following - // expression: ((mark - rsp) & (3 - os::vm_page_size())), - // assuming both stack pointer and pagesize have their - // least significant 2 bits clear. - // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg - subptr(swap_reg, rsp); - andptr(swap_reg, 3 - os::vm_page_size()); - - // Save the test result, for recursive case, the result is zero - movptr(Address(lock_reg, mark_offset), swap_reg); - - if (PrintBiasedLockingStatistics) { - cond_inc32(Assembler::zero, - ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); - } - jcc(Assembler::zero, done); - - bind(slow_case); - - // Call the runtime routine for 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: rdx : Points to BasicObjectLock structure for lock -// Throw an IllegalMonitorException if object is not locked by current thread -// -// Uses: rax, rbx, rcx, rdx -void InterpreterMacroAssembler::unlock_object(Register lock_reg) { - assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); - - if (UseHeavyMonitors) { - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); - } else { - Label done; - - const Register swap_reg = rax; // Must use rax, for cmpxchg instruction - const Register header_reg = rbx; // Will contain the old oopMark - const Register obj_reg = rcx; // Will contain the oop - - save_bcp(); // Save in case of exception - - // Convert from BasicObjectLock structure to object and BasicLock structure - // Store the BasicLock address into %rax, - lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); - - // Load oop into obj_reg(%rcx) - movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); - - // Free entry - movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); - - if (UseBiasedLocking) { - biased_locking_exit(obj_reg, header_reg, done); - } - - // Load the old header from BasicLock structure - movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); - - // Test for recursion - testptr(header_reg, header_reg); - - // zero for recursive case - jcc(Assembler::zero, done); - - // Atomic swap back the old header - if (os::is_MP()) lock(); - cmpxchgptr(header_reg, Address(obj_reg, 0)); - - // zero for recursive case - jcc(Assembler::zero, done); - - // Call the runtime routine for slow case. - movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); - - bind(done); - - restore_bcp(); - } -} - - -#ifndef CC_INTERP - -// Test ImethodDataPtr. If it is null, continue at the specified label -void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { - assert(ProfileInterpreter, "must be profiling interpreter"); - movptr(mdp, Address(rbp, frame::interpreter_frame_mdp_offset * wordSize)); - testptr(mdp, mdp); - jcc(Assembler::zero, zero_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 set_mdp; - push(rax); - push(rbx); - - get_method(rbx); - // Test MDO to avoid the call if it is NULL. - movptr(rax, Address(rbx, in_bytes(Method::method_data_offset()))); - testptr(rax, rax); - jcc(Assembler::zero, set_mdp); - // rbx,: method - // rsi: bcp - call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); - // rax,: mdi - // mdo is guaranteed to be non-zero here, we checked for it before the call. - movptr(rbx, Address(rbx, in_bytes(Method::method_data_offset()))); - addptr(rbx, in_bytes(MethodData::data_offset())); - addptr(rax, rbx); - bind(set_mdp); - movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), rax); - pop(rbx); - pop(rax); -} - -void InterpreterMacroAssembler::verify_method_data_pointer() { - assert(ProfileInterpreter, "must be profiling interpreter"); -#ifdef ASSERT - Label verify_continue; - push(rax); - push(rbx); - push(rcx); - push(rdx); - test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue - get_method(rbx); - - // If the mdp is valid, it will point to a DataLayout header which is - // consistent with the bcp. The converse is highly probable also. - load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); - addptr(rdx, Address(rbx, Method::const_offset())); - lea(rdx, Address(rdx, ConstMethod::codes_offset())); - cmpptr(rdx, rsi); - jcc(Assembler::equal, verify_continue); - // rbx,: method - // rsi: bcp - // rcx: mdp - call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); - bind(verify_continue); - pop(rdx); - pop(rcx); - pop(rbx); - pop(rax); -#endif // ASSERT -} - - -void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { - // %%% this seems to be used to store counter data which is surely 32bits - // however 64bit side stores 64 bits which seems wrong - assert(ProfileInterpreter, "must be profiling interpreter"); - Address data(mdp_in, constant); - movptr(data, value); -} - - -void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, - int constant, - bool decrement) { - // Counter address - Address data(mdp_in, constant); - - increment_mdp_data_at(data, decrement); -} - - -void InterpreterMacroAssembler::increment_mdp_data_at(Address data, - bool decrement) { - - assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); - assert(ProfileInterpreter, "must be profiling interpreter"); - - // %%% 64bit treats this as 64 bit which seems unlikely - if (decrement) { - // Decrement the register. Set condition codes. - addl(data, -DataLayout::counter_increment); - // If the decrement causes the counter to overflow, stay negative - Label L; - jcc(Assembler::negative, L); - addl(data, DataLayout::counter_increment); - bind(L); - } else { - assert(DataLayout::counter_increment == 1, - "flow-free idiom only works with 1"); - // Increment the register. Set carry flag. - addl(data, DataLayout::counter_increment); - // If the increment causes the counter to overflow, pull back by 1. - sbbl(data, 0); - } -} - - -void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, - Register reg, - int constant, - bool decrement) { - Address data(mdp_in, reg, Address::times_1, constant); - - increment_mdp_data_at(data, decrement); -} - - -void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { - assert(ProfileInterpreter, "must be profiling interpreter"); - int header_offset = in_bytes(DataLayout::header_offset()); - int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); - // Set the flag - orl(Address(mdp_in, header_offset), header_bits); -} - - - -void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, - int offset, - Register value, - Register test_value_out, - Label& not_equal_continue) { - assert(ProfileInterpreter, "must be profiling interpreter"); - if (test_value_out == noreg) { - cmpptr(value, Address(mdp_in, offset)); - } else { - // Put the test value into a register, so caller can use it: - movptr(test_value_out, Address(mdp_in, offset)); - cmpptr(test_value_out, value); - } - jcc(Assembler::notEqual, not_equal_continue); -} - - -void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { - assert(ProfileInterpreter, "must be profiling interpreter"); - Address disp_address(mdp_in, offset_of_disp); - addptr(mdp_in,disp_address); - movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in); -} - - -void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { - assert(ProfileInterpreter, "must be profiling interpreter"); - Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); - addptr(mdp_in, disp_address); - movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in); -} - - -void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { - assert(ProfileInterpreter, "must be profiling interpreter"); - addptr(mdp_in, constant); - movptr(Address(rbp, frame::interpreter_frame_mdp_offset * wordSize), mdp_in); -} - - -void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { - assert(ProfileInterpreter, "must be profiling interpreter"); - push(return_bci); // save/restore across call_VM - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); - pop(return_bci); -} - - -void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - // Otherwise, assign to mdp - test_method_data_pointer(mdp, profile_continue); - - // We are taking a branch. Increment the taken count. - // We inline increment_mdp_data_at to return bumped_count in a register - //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); - Address data(mdp, in_bytes(JumpData::taken_offset())); - - // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit - movl(bumped_count,data); - assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); - addl(bumped_count, DataLayout::counter_increment); - sbbl(bumped_count, 0); - movl(data,bumped_count); // Store back out - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); - bind (profile_continue); - } -} - - -void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - // We are taking a branch. Increment the not taken count. - increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); - - // The method data pointer needs to be updated to correspond to the next bytecode - update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); - bind (profile_continue); - } -} - -void InterpreterMacroAssembler::profile_call(Register mdp) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - // We are making a call. Increment the count. - increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); - bind (profile_continue); - } -} - - -void InterpreterMacroAssembler::profile_final_call(Register mdp) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - // We are making a call. Increment the count. - increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); - bind (profile_continue); - } -} - - -void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, - Register reg2, - bool receiver_can_be_null) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - Label skip_receiver_profile; - if (receiver_can_be_null) { - Label not_null; - testptr(receiver, receiver); - jccb(Assembler::notZero, not_null); - // We are making a call. Increment the count for null receiver. - increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); - jmp(skip_receiver_profile); - bind(not_null); - } - - // Record the receiver type. - record_klass_in_profile(receiver, mdp, reg2, true); - bind(skip_receiver_profile); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_constant(mdp, - in_bytes(VirtualCallData:: - virtual_call_data_size())); - bind(profile_continue); - } -} - - -void InterpreterMacroAssembler::record_klass_in_profile_helper( - Register receiver, Register mdp, - Register reg2, int start_row, - Label& done, bool is_virtual_call) { - if (TypeProfileWidth == 0) { - if (is_virtual_call) { - increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); - } - 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(mdp, recvr_offset, receiver, - (test_for_null_also ? reg2 : noreg), - next_test); - // (Reg2 now contains the receiver from the CallData.) - - // The receiver is receiver[n]. Increment count[n]. - int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); - increment_mdp_data_at(mdp, count_offset); - jmp(done); - bind(next_test); - - if (row == start_row) { - Label found_null; - // Failed the equality check on receiver[n]... Test for null. - testptr(reg2, reg2); - if (start_row == last_row) { - // The only thing left to do is handle the null case. - if (is_virtual_call) { - jccb(Assembler::zero, found_null); - // 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(mdp, in_bytes(CounterData::count_offset())); - jmp(done); - bind(found_null); - } else { - jcc(Assembler::notZero, done); - } - break; - } - // Since null is rare, make it be the branch-taken case. - jcc(Assembler::zero, found_null); - - // Put all the "Case 3" tests here. - record_klass_in_profile_helper(receiver, mdp, reg2, 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(mdp, recvr_offset, receiver); - int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); - movptr(reg2, (intptr_t)DataLayout::counter_increment); - set_mdp_data_at(mdp, count_offset, reg2); - if (start_row > 0) { - jmp(done); - } -} - -void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, - Register mdp, Register reg2, - bool is_virtual_call) { - assert(ProfileInterpreter, "must be profiling"); - Label done; - - record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); - - bind (done); -} - -void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { - if (ProfileInterpreter) { - Label profile_continue; - uint row; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - // Update the total ret count. - increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); - - for (row = 0; row < RetData::row_limit(); row++) { - Label next_test; - - // See if return_bci is equal to bci[n]: - test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, - noreg, next_test); - - // return_bci is equal to bci[n]. Increment the count. - increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); - - // The method data pointer needs to be updated to reflect the new target. - update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); - jmp(profile_continue); - bind(next_test); - } - - update_mdp_for_ret(return_bci); - - bind (profile_continue); - } -} - - -void InterpreterMacroAssembler::profile_null_seen(Register mdp) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); - - // 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, mdp_delta); - - bind (profile_continue); - } -} - - -void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { - if (ProfileInterpreter && TypeProfileCasts) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, 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(mdp, count_offset, true); - - bind (profile_continue); - } -} - - -void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) -{ - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - // 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()); - - // Record the object type. - record_klass_in_profile(klass, mdp, reg2, false); - assert(reg2 == rdi, "we know how to fix this blown reg"); - restore_locals(); // Restore EDI - } - update_mdp_by_constant(mdp, mdp_delta); - - bind(profile_continue); - } -} - - -void InterpreterMacroAssembler::profile_switch_default(Register mdp) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - // Update the default case count - increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); - - // The method data pointer needs to be updated. - update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); - - bind (profile_continue); - } -} - - -void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { - if (ProfileInterpreter) { - Label profile_continue; - - // If no method data exists, go to profile_continue. - test_method_data_pointer(mdp, profile_continue); - - // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() - movptr(reg2, (intptr_t)in_bytes(MultiBranchData::per_case_size())); - // index is positive and so should have correct value if this code were - // used on 64bits - imulptr(index, reg2); - addptr(index, in_bytes(MultiBranchData::case_array_offset())); - - // Update the case count - increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); - - // The method data pointer needs to be updated. - update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); - - bind (profile_continue); - } -} - -#endif // !CC_INTERP - - - -void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { - if (state == atos) MacroAssembler::verify_oop(reg); -} - - -#ifndef CC_INTERP -void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { - if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); -} - -// Jump if ((*counter_addr += increment) & mask) satisfies the condition. -void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, - int increment, Address mask, - Register scratch, bool preloaded, - Condition cond, Label* where) { - if (!preloaded) { - movl(scratch, counter_addr); - } - incrementl(scratch, increment); - movl(counter_addr, scratch); - andl(scratch, mask); - jcc(cond, *where); -} -#endif /* CC_INTERP */ - - -void InterpreterMacroAssembler::notify_method_entry() { - // Whenever JVMTI is interp_only_mode, method entry/exit events are sent 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; - get_thread(rcx); - movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); - testl(rcx,rcx); - jcc(Assembler::zero, L); - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); - bind(L); - } - - { - SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); - get_thread(rcx); - get_method(rbx); - call_VM_leaf( - CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); - } - - // RedefineClasses() tracing support for obsolete method entry - if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { - get_thread(rcx); - get_method(rbx); - call_VM_leaf( - CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), - rcx, rbx); - } -} - - -void InterpreterMacroAssembler::notify_method_exit( - TosState state, NotifyMethodExitMode mode) { - // Whenever JVMTI is interp_only_mode, method entry/exit events are sent 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; - // Note: frame::interpreter_frame_result has a dependency on how the - // method result is saved across the call to post_method_exit. If this - // is changed then the interpreter_frame_result implementation will - // need to be updated too. - - // For c++ interpreter the result is always stored at a known location in the frame - // template interpreter will leave it on the top of the stack. - NOT_CC_INTERP(push(state);) - get_thread(rcx); - movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); - testl(rcx,rcx); - jcc(Assembler::zero, L); - call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); - bind(L); - NOT_CC_INTERP(pop(state);) - } - - { - SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); - NOT_CC_INTERP(push(state)); - get_thread(rbx); - get_method(rcx); - call_VM_leaf( - CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), - rbx, rcx); - NOT_CC_INTERP(pop(state)); - } -}