src/cpu/x86/vm/templateInterpreterGenerator_x86_32.cpp
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src/cpu/x86/vm/templateInterpreterGenerator_x86_32.cpp

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*** 49,713 **** #define __ _masm-> #ifndef CC_INTERP - const int method_offset = frame::interpreter_frame_method_offset * wordSize; - const int bcp_offset = frame::interpreter_frame_bcp_offset * wordSize; - const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; - - //------------------------------------------------------------------------------------------------------------------------ - - address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { - address entry = __ pc(); - - // Note: There should be a minimal interpreter frame set up when stack - // overflow occurs since we check explicitly for it now. - // - #ifdef ASSERT - { Label L; - __ lea(rax, Address(rbp, - frame::interpreter_frame_monitor_block_top_offset * wordSize)); - __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp, - // (stack grows negative) - __ jcc(Assembler::aboveEqual, L); // check if frame is complete - __ stop ("interpreter frame not set up"); - __ bind(L); - } - #endif // ASSERT - // Restore bcp under the assumption that the current frame is still - // interpreted - __ restore_bcp(); - - // expression stack must be empty before entering the VM if an exception - // happened - __ empty_expression_stack(); - __ empty_FPU_stack(); - // throw exception - __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); - return entry; - } - - address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { - address entry = __ pc(); - // expression stack must be empty before entering the VM if an exception happened - __ empty_expression_stack(); - __ empty_FPU_stack(); - // setup parameters - // ??? convention: expect aberrant index in register rbx, - __ lea(rax, ExternalAddress((address)name)); - __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx); - return entry; - } - - address TemplateInterpreterGenerator::generate_ClassCastException_handler() { - address entry = __ pc(); - // object is at TOS - __ pop(rax); - // expression stack must be empty before entering the VM if an exception - // happened - __ empty_expression_stack(); - __ empty_FPU_stack(); - __ call_VM(noreg, - CAST_FROM_FN_PTR(address, - InterpreterRuntime::throw_ClassCastException), - rax); - return entry; - } - - address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { - assert(!pass_oop || message == NULL, "either oop or message but not both"); - address entry = __ pc(); - if (pass_oop) { - // object is at TOS - __ pop(rbx); - } - // expression stack must be empty before entering the VM if an exception happened - __ empty_expression_stack(); - __ empty_FPU_stack(); - // setup parameters - __ lea(rax, ExternalAddress((address)name)); - if (pass_oop) { - __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx); - } else { - if (message != NULL) { - __ lea(rbx, ExternalAddress((address)message)); - } else { - __ movptr(rbx, NULL_WORD); - } - __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx); - } - // throw exception - __ jump(ExternalAddress(Interpreter::throw_exception_entry())); - return entry; - } - - - address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { - address entry = __ pc(); - // NULL last_sp until next java call - __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); - __ dispatch_next(state); - return entry; - } - - - address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) { - address entry = __ pc(); - - #ifdef COMPILER2 - // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases - if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { - for (int i = 1; i < 8; i++) { - __ ffree(i); - } - } else if (UseSSE < 2) { - __ empty_FPU_stack(); - } - #endif - if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { - __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); - } else { - __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); - } - - if (state == ftos) { - __ MacroAssembler::verify_FPU(UseSSE >= 1 ? 0 : 1, "generate_return_entry_for in interpreter"); - } else if (state == dtos) { - __ MacroAssembler::verify_FPU(UseSSE >= 2 ? 0 : 1, "generate_return_entry_for in interpreter"); - } - - // Restore stack bottom in case i2c adjusted stack - __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); - // and NULL it as marker that rsp is now tos until next java call - __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); - - __ restore_bcp(); - __ restore_locals(); - - if (state == atos) { - Register mdp = rbx; - Register tmp = rcx; - __ profile_return_type(mdp, rax, tmp); - } - - const Register cache = rbx; - const Register index = rcx; - __ get_cache_and_index_at_bcp(cache, index, 1, index_size); - - const Register flags = cache; - __ movl(flags, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); - __ andl(flags, ConstantPoolCacheEntry::parameter_size_mask); - __ lea(rsp, Address(rsp, flags, Interpreter::stackElementScale())); - __ dispatch_next(state, step); - - return entry; - } - - - address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { - address entry = __ pc(); - - if (state == ftos) { - __ MacroAssembler::verify_FPU(UseSSE >= 1 ? 0 : 1, "generate_deopt_entry_for in interpreter"); - } else if (state == dtos) { - __ MacroAssembler::verify_FPU(UseSSE >= 2 ? 0 : 1, "generate_deopt_entry_for in interpreter"); - } - - // The stack is not extended by deopt but we must NULL last_sp as this - // entry is like a "return". - __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); - __ restore_bcp(); - __ restore_locals(); - // handle exceptions - { Label L; - const Register thread = rcx; - __ get_thread(thread); - __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); - __ jcc(Assembler::zero, L); - __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); - __ should_not_reach_here(); - __ bind(L); - } - __ dispatch_next(state, step); - return entry; - } - - - int AbstractInterpreter::BasicType_as_index(BasicType type) { - int i = 0; - switch (type) { - case T_BOOLEAN: i = 0; break; - case T_CHAR : i = 1; break; - case T_BYTE : i = 2; break; - case T_SHORT : i = 3; break; - case T_INT : // fall through - case T_LONG : // fall through - case T_VOID : i = 4; break; - case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE - case T_DOUBLE : i = 6; break; - case T_OBJECT : // fall through - case T_ARRAY : i = 7; break; - default : ShouldNotReachHere(); - } - assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); - return i; - } - - - address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { - address entry = __ pc(); - switch (type) { - case T_BOOLEAN: __ c2bool(rax); break; - case T_CHAR : __ andptr(rax, 0xFFFF); break; - case T_BYTE : __ sign_extend_byte (rax); break; - case T_SHORT : __ sign_extend_short(rax); break; - case T_INT : /* nothing to do */ break; - case T_LONG : /* nothing to do */ break; - case T_VOID : /* nothing to do */ break; - case T_DOUBLE : - case T_FLOAT : - { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); - __ pop(t); // remove return address first - // Must return a result for interpreter or compiler. In SSE - // mode, results are returned in xmm0 and the FPU stack must - // be empty. - if (type == T_FLOAT && UseSSE >= 1) { - // Load ST0 - __ fld_d(Address(rsp, 0)); - // Store as float and empty fpu stack - __ fstp_s(Address(rsp, 0)); - // and reload - __ movflt(xmm0, Address(rsp, 0)); - } else if (type == T_DOUBLE && UseSSE >= 2 ) { - __ movdbl(xmm0, Address(rsp, 0)); - } else { - // restore ST0 - __ fld_d(Address(rsp, 0)); - } - // and pop the temp - __ addptr(rsp, 2 * wordSize); - __ push(t); // restore return address - } - break; - case T_OBJECT : - // retrieve result from frame - __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); - // and verify it - __ verify_oop(rax); - break; - default : ShouldNotReachHere(); - } - __ ret(0); // return from result handler - return entry; - } - - address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { - address entry = __ pc(); - __ push(state); - __ call_VM(noreg, runtime_entry); - __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); - return entry; - } - - - // Helpers for commoning out cases in the various type of method entries. - // - - // increment invocation count & check for overflow - // - // Note: checking for negative value instead of overflow - // so we have a 'sticky' overflow test - // - // rbx,: method - // rcx: invocation counter - // - void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { - Label done; - // Note: In tiered we increment either counters in MethodCounters* or in MDO - // depending if we're profiling or not. - if (TieredCompilation) { - int increment = InvocationCounter::count_increment; - Label no_mdo; - if (ProfileInterpreter) { - // Are we profiling? - __ movptr(rax, Address(rbx, Method::method_data_offset())); - __ testptr(rax, rax); - __ jccb(Assembler::zero, no_mdo); - // Increment counter in the MDO - const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + - in_bytes(InvocationCounter::counter_offset())); - const Address mask(rax, in_bytes(MethodData::invoke_mask_offset())); - __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); - __ jmp(done); - } - __ bind(no_mdo); - // Increment counter in MethodCounters - const Address invocation_counter(rax, - MethodCounters::invocation_counter_offset() + - InvocationCounter::counter_offset()); - - __ get_method_counters(rbx, rax, done); - const Address mask(rax, in_bytes(MethodCounters::invoke_mask_offset())); - __ increment_mask_and_jump(invocation_counter, increment, mask, - rcx, false, Assembler::zero, overflow); - __ bind(done); - } else { // not TieredCompilation - const Address backedge_counter(rax, - MethodCounters::backedge_counter_offset() + - InvocationCounter::counter_offset()); - const Address invocation_counter(rax, - MethodCounters::invocation_counter_offset() + - InvocationCounter::counter_offset()); - - __ get_method_counters(rbx, rax, done); - - if (ProfileInterpreter) { - __ incrementl(Address(rax, - MethodCounters::interpreter_invocation_counter_offset())); - } - - // Update standard invocation counters - __ movl(rcx, invocation_counter); - __ incrementl(rcx, InvocationCounter::count_increment); - __ movl(invocation_counter, rcx); // save invocation count - - __ movl(rax, backedge_counter); // load backedge counter - __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits - - __ addl(rcx, rax); // add both counters - - // profile_method is non-null only for interpreted method so - // profile_method != NULL == !native_call - // BytecodeInterpreter only calls for native so code is elided. - - if (ProfileInterpreter && profile_method != NULL) { - // Test to see if we should create a method data oop - __ movptr(rax, Address(rbx, Method::method_counters_offset())); - __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_profile_limit_offset()))); - __ jcc(Assembler::less, *profile_method_continue); - - // if no method data exists, go to profile_method - __ test_method_data_pointer(rax, *profile_method); - } - - __ movptr(rax, Address(rbx, Method::method_counters_offset())); - __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_invocation_limit_offset()))); - __ jcc(Assembler::aboveEqual, *overflow); - __ bind(done); - } - } - - void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { - - // Asm interpreter on entry - // rdi - locals - // rsi - bcp - // rbx, - method - // rdx - cpool - // rbp, - interpreter frame - - // C++ interpreter on entry - // rsi - new interpreter state pointer - // rbp - interpreter frame pointer - // rbx - method - - // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] - // rbx, - method - // rcx - rcvr (assuming there is one) - // top of stack return address of interpreter caller - // rsp - sender_sp - - // C++ interpreter only - // rsi - previous interpreter state pointer - - // InterpreterRuntime::frequency_counter_overflow takes one argument - // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). - // The call returns the address of the verified entry point for the method or NULL - // if the compilation did not complete (either went background or bailed out). - __ movptr(rax, (intptr_t)false); - __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); - - __ movptr(rbx, Address(rbp, method_offset)); // restore Method* - - // Preserve invariant that rsi/rdi contain bcp/locals of sender frame - // and jump to the interpreted entry. - __ jmp(*do_continue, relocInfo::none); - - } - - void InterpreterGenerator::generate_stack_overflow_check(void) { - // see if we've got enough room on the stack for locals plus overhead. - // the expression stack grows down incrementally, so the normal guard - // page mechanism will work for that. - // - // Registers live on entry: - // - // Asm interpreter - // rdx: number of additional locals this frame needs (what we must check) - // rbx,: Method* - - // destroyed on exit - // rax, - - // NOTE: since the additional locals are also always pushed (wasn't obvious in - // generate_fixed_frame) so the guard should work for them too. - // - - // monitor entry size: see picture of stack in frame_x86.hpp - const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; - - // total overhead size: entry_size + (saved rbp, thru expr stack bottom). - // be sure to change this if you add/subtract anything to/from the overhead area - const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; - - const int page_size = os::vm_page_size(); - - Label after_frame_check; - - // see if the frame is greater than one page in size. If so, - // then we need to verify there is enough stack space remaining - // for the additional locals. - __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize); - __ jcc(Assembler::belowEqual, after_frame_check); - - // compute rsp as if this were going to be the last frame on - // the stack before the red zone - - Label after_frame_check_pop; - - __ push(rsi); - - const Register thread = rsi; - - __ get_thread(thread); - - const Address stack_base(thread, Thread::stack_base_offset()); - const Address stack_size(thread, Thread::stack_size_offset()); - - // locals + overhead, in bytes - __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); - - #ifdef ASSERT - Label stack_base_okay, stack_size_okay; - // verify that thread stack base is non-zero - __ cmpptr(stack_base, (int32_t)NULL_WORD); - __ jcc(Assembler::notEqual, stack_base_okay); - __ stop("stack base is zero"); - __ bind(stack_base_okay); - // verify that thread stack size is non-zero - __ cmpptr(stack_size, 0); - __ jcc(Assembler::notEqual, stack_size_okay); - __ stop("stack size is zero"); - __ bind(stack_size_okay); - #endif - - // Add stack base to locals and subtract stack size - __ addptr(rax, stack_base); - __ subptr(rax, stack_size); - - // Use the maximum number of pages we might bang. - const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : - (StackRedPages+StackYellowPages); - __ addptr(rax, max_pages * page_size); - - // check against the current stack bottom - __ cmpptr(rsp, rax); - __ jcc(Assembler::above, after_frame_check_pop); - - __ pop(rsi); // get saved bcp / (c++ prev state ). - - // Restore sender's sp as SP. This is necessary if the sender's - // frame is an extended compiled frame (see gen_c2i_adapter()) - // and safer anyway in case of JSR292 adaptations. - - __ pop(rax); // return address must be moved if SP is changed - __ mov(rsp, rsi); - __ push(rax); - - // Note: the restored frame is not necessarily interpreted. - // Use the shared runtime version of the StackOverflowError. - assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); - __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); - // all done with frame size check - __ bind(after_frame_check_pop); - __ pop(rsi); - - __ bind(after_frame_check); - } - - // Allocate monitor and lock method (asm interpreter) - // rbx, - Method* - // - void TemplateInterpreterGenerator::lock_method() { - // synchronize method - const Address access_flags (rbx, Method::access_flags_offset()); - const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); - const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; - - #ifdef ASSERT - { Label L; - __ movl(rax, access_flags); - __ testl(rax, JVM_ACC_SYNCHRONIZED); - __ jcc(Assembler::notZero, L); - __ stop("method doesn't need synchronization"); - __ bind(L); - } - #endif // ASSERT - // get synchronization object - { Label done; - const int mirror_offset = in_bytes(Klass::java_mirror_offset()); - __ movl(rax, access_flags); - __ testl(rax, JVM_ACC_STATIC); - __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) - __ jcc(Assembler::zero, done); - __ movptr(rax, Address(rbx, Method::const_offset())); - __ movptr(rax, Address(rax, ConstMethod::constants_offset())); - __ movptr(rax, Address(rax, ConstantPool::pool_holder_offset_in_bytes())); - __ movptr(rax, Address(rax, mirror_offset)); - __ bind(done); - } - // add space for monitor & lock - __ subptr(rsp, entry_size); // add space for a monitor entry - __ movptr(monitor_block_top, rsp); // set new monitor block top - __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object - __ mov(rdx, rsp); // object address - __ lock_object(rdx); - } - - // - // Generate a fixed interpreter frame. This is identical setup for interpreted methods - // and for native methods hence the shared code. - - void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { - // initialize fixed part of activation frame - __ push(rax); // save return address - __ enter(); // save old & set new rbp, - - - __ push(rsi); // set sender sp - __ push((int32_t)NULL_WORD); // leave last_sp as null - __ movptr(rsi, Address(rbx,Method::const_offset())); // get ConstMethod* - __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase - __ push(rbx); // save Method* - if (ProfileInterpreter) { - Label method_data_continue; - __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); - __ testptr(rdx, rdx); - __ jcc(Assembler::zero, method_data_continue); - __ addptr(rdx, in_bytes(MethodData::data_offset())); - __ bind(method_data_continue); - __ push(rdx); // set the mdp (method data pointer) - } else { - __ push(0); - } - - __ movptr(rdx, Address(rbx, Method::const_offset())); - __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); - __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); - __ push(rdx); // set constant pool cache - __ push(rdi); // set locals pointer - if (native_call) { - __ push(0); // no bcp - } else { - __ push(rsi); // set bcp - } - __ push(0); // reserve word for pointer to expression stack bottom - __ movptr(Address(rsp, 0), rsp); // set expression stack bottom - } - - - // Method entry for java.lang.ref.Reference.get. - address InterpreterGenerator::generate_Reference_get_entry(void) { - #if INCLUDE_ALL_GCS - // Code: _aload_0, _getfield, _areturn - // parameter size = 1 - // - // The code that gets generated by this routine is split into 2 parts: - // 1. The "intrinsified" code for G1 (or any SATB based GC), - // 2. The slow path - which is an expansion of the regular method entry. - // - // Notes:- - // * In the G1 code we do not check whether we need to block for - // a safepoint. If G1 is enabled then we must execute the specialized - // code for Reference.get (except when the Reference object is null) - // so that we can log the value in the referent field with an SATB - // update buffer. - // If the code for the getfield template is modified so that the - // G1 pre-barrier code is executed when the current method is - // Reference.get() then going through the normal method entry - // will be fine. - // * The G1 code below can, however, check the receiver object (the instance - // of java.lang.Reference) and jump to the slow path if null. If the - // Reference object is null then we obviously cannot fetch the referent - // and so we don't need to call the G1 pre-barrier. Thus we can use the - // regular method entry code to generate the NPE. - // - // This code is based on generate_accessor_enty. - - // rbx,: Method* - // rcx: receiver (preserve for slow entry into asm interpreter) - - // rsi: senderSP must preserved for slow path, set SP to it on fast path - - address entry = __ pc(); - - const int referent_offset = java_lang_ref_Reference::referent_offset; - guarantee(referent_offset > 0, "referent offset not initialized"); - - if (UseG1GC) { - Label slow_path; - - // Check if local 0 != NULL - // If the receiver is null then it is OK to jump to the slow path. - __ movptr(rax, Address(rsp, wordSize)); - __ testptr(rax, rax); - __ jcc(Assembler::zero, slow_path); - - // rax: local 0 (must be preserved across the G1 barrier call) - // - // rbx: method (at this point it's scratch) - // rcx: receiver (at this point it's scratch) - // rdx: scratch - // rdi: scratch - // - // rsi: sender sp - - // Preserve the sender sp in case the pre-barrier - // calls the runtime - __ push(rsi); - - // Load the value of the referent field. - const Address field_address(rax, referent_offset); - __ movptr(rax, field_address); - - // Generate the G1 pre-barrier code to log the value of - // the referent field in an SATB buffer. - __ get_thread(rcx); - __ g1_write_barrier_pre(noreg /* obj */, - rax /* pre_val */, - rcx /* thread */, - rbx /* tmp */, - true /* tosca_save */, - true /* expand_call */); - - // _areturn - __ pop(rsi); // get sender sp - __ pop(rdi); // get return address - __ mov(rsp, rsi); // set sp to sender sp - __ jmp(rdi); - - __ bind(slow_path); - __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals)); - return entry; - } - #endif // INCLUDE_ALL_GCS - - // If G1 is not enabled then attempt to go through the accessor entry point - // Reference.get is an accessor - return NULL; - } /** * Method entry for static native methods: * int java.util.zip.CRC32.update(int crc, int b) */ --- 49,58 ----
*** 974,1916 **** return entry; } return NULL; } - - // - // Interpreter stub for calling a native method. (asm interpreter) - // This sets up a somewhat different looking stack for calling the native method - // than the typical interpreter frame setup. - // - - address InterpreterGenerator::generate_native_entry(bool synchronized) { - // determine code generation flags - bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods; - - // rbx,: Method* - // rsi: sender sp - // rsi: previous interpreter state (C++ interpreter) must preserve - address entry_point = __ pc(); - - const Address constMethod (rbx, Method::const_offset()); - const Address access_flags (rbx, Method::access_flags_offset()); - const Address size_of_parameters(rcx, ConstMethod::size_of_parameters_offset()); - - // get parameter size (always needed) - __ movptr(rcx, constMethod); - __ load_unsigned_short(rcx, size_of_parameters); - - // native calls don't need the stack size check since they have no expression stack - // and the arguments are already on the stack and we only add a handful of words - // to the stack - - // rbx,: Method* - // rcx: size of parameters - // rsi: sender sp - - __ pop(rax); // get return address - // for natives the size of locals is zero - - // compute beginning of parameters (rdi) - __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); - - - // add 2 zero-initialized slots for native calls - // NULL result handler - __ push((int32_t)NULL_WORD); - // NULL oop temp (mirror or jni oop result) - __ push((int32_t)NULL_WORD); - - // initialize fixed part of activation frame - generate_fixed_frame(true); - - // make sure method is native & not abstract - #ifdef ASSERT - __ movl(rax, access_flags); - { - Label L; - __ testl(rax, JVM_ACC_NATIVE); - __ jcc(Assembler::notZero, L); - __ stop("tried to execute non-native method as native"); - __ bind(L); - } - { Label L; - __ testl(rax, JVM_ACC_ABSTRACT); - __ jcc(Assembler::zero, L); - __ stop("tried to execute abstract method in interpreter"); - __ bind(L); - } - #endif - - // Since at this point in the method invocation the exception handler - // would try to exit the monitor of synchronized methods which hasn't - // been entered yet, we set the thread local variable - // _do_not_unlock_if_synchronized to true. The remove_activation will - // check this flag. - - __ get_thread(rax); - const Address do_not_unlock_if_synchronized(rax, - in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); - __ movbool(do_not_unlock_if_synchronized, true); - - // increment invocation count & check for overflow - Label invocation_counter_overflow; - if (inc_counter) { - generate_counter_incr(&invocation_counter_overflow, NULL, NULL); - } - - Label continue_after_compile; - __ bind(continue_after_compile); - - bang_stack_shadow_pages(true); - - // reset the _do_not_unlock_if_synchronized flag - __ get_thread(rax); - __ movbool(do_not_unlock_if_synchronized, false); - - // check for synchronized methods - // Must happen AFTER invocation_counter check and stack overflow check, - // so method is not locked if overflows. - // - if (synchronized) { - lock_method(); - } else { - // no synchronization necessary - #ifdef ASSERT - { Label L; - __ movl(rax, access_flags); - __ testl(rax, JVM_ACC_SYNCHRONIZED); - __ jcc(Assembler::zero, L); - __ stop("method needs synchronization"); - __ bind(L); - } - #endif - } - - // start execution - #ifdef ASSERT - { Label L; - const Address monitor_block_top (rbp, - frame::interpreter_frame_monitor_block_top_offset * wordSize); - __ movptr(rax, monitor_block_top); - __ cmpptr(rax, rsp); - __ jcc(Assembler::equal, L); - __ stop("broken stack frame setup in interpreter"); - __ bind(L); - } - #endif - - // jvmti/dtrace support - __ notify_method_entry(); - - // work registers - const Register method = rbx; - const Register thread = rdi; - const Register t = rcx; - - // allocate space for parameters - __ get_method(method); - __ movptr(t, Address(method, Method::const_offset())); - __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); - - __ shlptr(t, Interpreter::logStackElementSize); - __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror - __ subptr(rsp, t); - __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics - - // get signature handler - { Label L; - __ movptr(t, Address(method, Method::signature_handler_offset())); - __ testptr(t, t); - __ jcc(Assembler::notZero, L); - __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); - __ get_method(method); - __ movptr(t, Address(method, Method::signature_handler_offset())); - __ bind(L); - } - - // call signature handler - assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); - assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); - assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); - // The generated handlers do not touch RBX (the method oop). - // However, large signatures cannot be cached and are generated - // each time here. The slow-path generator will blow RBX - // sometime, so we must reload it after the call. - __ call(t); - __ get_method(method); // slow path call blows RBX on DevStudio 5.0 - - // result handler is in rax, - // set result handler - __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); - - // pass mirror handle if static call - { Label L; - const int mirror_offset = in_bytes(Klass::java_mirror_offset()); - __ movl(t, Address(method, Method::access_flags_offset())); - __ testl(t, JVM_ACC_STATIC); - __ jcc(Assembler::zero, L); - // get mirror - __ movptr(t, Address(method, Method:: const_offset())); - __ movptr(t, Address(t, ConstMethod::constants_offset())); - __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); - __ movptr(t, Address(t, mirror_offset)); - // copy mirror into activation frame - __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); - // pass handle to mirror - __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); - __ movptr(Address(rsp, wordSize), t); - __ bind(L); - } - - // get native function entry point - { Label L; - __ movptr(rax, Address(method, Method::native_function_offset())); - ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); - __ cmpptr(rax, unsatisfied.addr()); - __ jcc(Assembler::notEqual, L); - __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); - __ get_method(method); - __ movptr(rax, Address(method, Method::native_function_offset())); - __ bind(L); - } - - // pass JNIEnv - __ get_thread(thread); - __ lea(t, Address(thread, JavaThread::jni_environment_offset())); - __ movptr(Address(rsp, 0), t); - - // set_last_Java_frame_before_call - // It is enough that the pc() - // points into the right code segment. It does not have to be the correct return pc. - __ set_last_Java_frame(thread, noreg, rbp, __ pc()); - - // change thread state - #ifdef ASSERT - { Label L; - __ movl(t, Address(thread, JavaThread::thread_state_offset())); - __ cmpl(t, _thread_in_Java); - __ jcc(Assembler::equal, L); - __ stop("Wrong thread state in native stub"); - __ bind(L); - } - #endif - - // Change state to native - __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); - __ call(rax); - - // result potentially in rdx:rax or ST0 - - // Verify or restore cpu control state after JNI call - __ restore_cpu_control_state_after_jni(); - - // save potential result in ST(0) & rdx:rax - // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - - // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) - // It is safe to do this push because state is _thread_in_native and return address will be found - // via _last_native_pc and not via _last_jave_sp - - // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. - // If the order changes or anything else is added to the stack the code in - // interpreter_frame_result will have to be changed. - - { Label L; - Label push_double; - ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); - ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); - __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), - float_handler.addr()); - __ jcc(Assembler::equal, push_double); - __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), - double_handler.addr()); - __ jcc(Assembler::notEqual, L); - __ bind(push_double); - __ push_d(); // FP values are returned using the FPU, so push FPU contents (even if UseSSE > 0). - __ bind(L); - } - __ push(ltos); - - // change thread state - __ get_thread(thread); - __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); - if(os::is_MP()) { - if (UseMembar) { - // Force this write out before the read below - __ membar(Assembler::Membar_mask_bits( - Assembler::LoadLoad | Assembler::LoadStore | - Assembler::StoreLoad | Assembler::StoreStore)); - } else { - // Write serialization page so VM thread can do a pseudo remote membar. - // We use the current thread pointer to calculate a thread specific - // offset to write to within the page. This minimizes bus traffic - // due to cache line collision. - __ serialize_memory(thread, rcx); - } - } - - if (AlwaysRestoreFPU) { - // Make sure the control word is correct. - __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); - } - - // check for safepoint operation in progress and/or pending suspend requests - { Label Continue; - - __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), - SafepointSynchronize::_not_synchronized); - - Label L; - __ jcc(Assembler::notEqual, L); - __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); - __ jcc(Assembler::equal, Continue); - __ bind(L); - - // Don't use call_VM as it will see a possible pending exception and forward it - // and never return here preventing us from clearing _last_native_pc down below. - // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are - // preserved and correspond to the bcp/locals pointers. So we do a runtime call - // by hand. - // - __ push(thread); - __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, - JavaThread::check_special_condition_for_native_trans))); - __ increment(rsp, wordSize); - __ get_thread(thread); - - __ bind(Continue); - } - - // change thread state - __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); - - __ reset_last_Java_frame(thread, true, true); - - // reset handle block - __ movptr(t, Address(thread, JavaThread::active_handles_offset())); - __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); - - // If result was an oop then unbox and save it in the frame - { Label L; - Label no_oop, store_result; - ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); - __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), - handler.addr()); - __ jcc(Assembler::notEqual, no_oop); - __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); - __ pop(ltos); - __ testptr(rax, rax); - __ jcc(Assembler::zero, store_result); - // unbox - __ movptr(rax, Address(rax, 0)); - __ bind(store_result); - __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); - // keep stack depth as expected by pushing oop which will eventually be discarded - __ push(ltos); - __ bind(no_oop); - } - - { - Label no_reguard; - __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); - __ jcc(Assembler::notEqual, no_reguard); - - __ pusha(); - __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); - __ popa(); - - __ bind(no_reguard); - } - - // restore rsi to have legal interpreter frame, - // i.e., bci == 0 <=> rsi == code_base() - // Can't call_VM until bcp is within reasonable. - __ get_method(method); // method is junk from thread_in_native to now. - __ movptr(rsi, Address(method,Method::const_offset())); // get ConstMethod* - __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase - - // handle exceptions (exception handling will handle unlocking!) - { Label L; - __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); - __ jcc(Assembler::zero, L); - // Note: At some point we may want to unify this with the code used in call_VM_base(); - // i.e., we should use the StubRoutines::forward_exception code. For now this - // doesn't work here because the rsp is not correctly set at this point. - __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); - __ should_not_reach_here(); - __ bind(L); - } - - // do unlocking if necessary - { Label L; - __ movl(t, Address(method, Method::access_flags_offset())); - __ testl(t, JVM_ACC_SYNCHRONIZED); - __ jcc(Assembler::zero, L); - // the code below should be shared with interpreter macro assembler implementation - { Label unlock; - // 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(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); - __ testptr(t, t); - __ jcc(Assembler::notZero, unlock); - - // Entry already unlocked, need to throw exception - __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); - __ should_not_reach_here(); - - __ bind(unlock); - __ unlock_object(rdx); - } - __ bind(L); - } - - // jvmti/dtrace support - // Note: This must happen _after_ handling/throwing any exceptions since - // the exception handler code notifies the runtime of method exits - // too. If this happens before, method entry/exit notifications are - // not properly paired (was bug - gri 11/22/99). - __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); - - // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result - __ pop(ltos); - __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); - __ call(t); - - // remove activation - __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp - __ leave(); // remove frame anchor - __ pop(rdi); // get return address - __ mov(rsp, t); // set sp to sender sp - __ jmp(rdi); - - if (inc_counter) { - // Handle overflow of counter and compile method - __ bind(invocation_counter_overflow); - generate_counter_overflow(&continue_after_compile); - } - - return entry_point; - } - - // - // Generic interpreted method entry to (asm) interpreter - // - address InterpreterGenerator::generate_normal_entry(bool synchronized) { - // determine code generation flags - bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods; - - // rbx,: Method* - // rsi: sender sp - address entry_point = __ pc(); - - const Address constMethod (rbx, Method::const_offset()); - const Address access_flags (rbx, Method::access_flags_offset()); - const Address size_of_parameters(rdx, ConstMethod::size_of_parameters_offset()); - const Address size_of_locals (rdx, ConstMethod::size_of_locals_offset()); - - // get parameter size (always needed) - __ movptr(rdx, constMethod); - __ load_unsigned_short(rcx, size_of_parameters); - - // rbx,: Method* - // rcx: size of parameters - - // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) - - __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words - __ subl(rdx, rcx); // rdx = no. of additional locals - - // see if we've got enough room on the stack for locals plus overhead. - generate_stack_overflow_check(); - - // get return address - __ pop(rax); - - // compute beginning of parameters (rdi) - __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); - - // rdx - # of additional locals - // allocate space for locals - // explicitly initialize locals - { - Label exit, loop; - __ testl(rdx, rdx); - __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 - __ bind(loop); - __ push((int32_t)NULL_WORD); // initialize local variables - __ decrement(rdx); // until everything initialized - __ jcc(Assembler::greater, loop); - __ bind(exit); - } - - // initialize fixed part of activation frame - generate_fixed_frame(false); - - // make sure method is not native & not abstract - #ifdef ASSERT - __ movl(rax, access_flags); - { - Label L; - __ testl(rax, JVM_ACC_NATIVE); - __ jcc(Assembler::zero, L); - __ stop("tried to execute native method as non-native"); - __ bind(L); - } - { Label L; - __ testl(rax, JVM_ACC_ABSTRACT); - __ jcc(Assembler::zero, L); - __ stop("tried to execute abstract method in interpreter"); - __ bind(L); - } - #endif - - // Since at this point in the method invocation the exception handler - // would try to exit the monitor of synchronized methods which hasn't - // been entered yet, we set the thread local variable - // _do_not_unlock_if_synchronized to true. The remove_activation will - // check this flag. - - __ get_thread(rax); - const Address do_not_unlock_if_synchronized(rax, - in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); - __ movbool(do_not_unlock_if_synchronized, true); - - __ profile_parameters_type(rax, rcx, rdx); - // increment invocation count & check for overflow - Label invocation_counter_overflow; - Label profile_method; - Label profile_method_continue; - if (inc_counter) { - generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); - if (ProfileInterpreter) { - __ bind(profile_method_continue); - } - } - Label continue_after_compile; - __ bind(continue_after_compile); - - bang_stack_shadow_pages(false); - - // reset the _do_not_unlock_if_synchronized flag - __ get_thread(rax); - __ movbool(do_not_unlock_if_synchronized, false); - - // check for synchronized methods - // Must happen AFTER invocation_counter check and stack overflow check, - // so method is not locked if overflows. - // - if (synchronized) { - // Allocate monitor and lock method - lock_method(); - } else { - // no synchronization necessary - #ifdef ASSERT - { Label L; - __ movl(rax, access_flags); - __ testl(rax, JVM_ACC_SYNCHRONIZED); - __ jcc(Assembler::zero, L); - __ stop("method needs synchronization"); - __ bind(L); - } - #endif - } - - // start execution - #ifdef ASSERT - { Label L; - const Address monitor_block_top (rbp, - frame::interpreter_frame_monitor_block_top_offset * wordSize); - __ movptr(rax, monitor_block_top); - __ cmpptr(rax, rsp); - __ jcc(Assembler::equal, L); - __ stop("broken stack frame setup in interpreter"); - __ bind(L); - } - #endif - - // jvmti support - __ notify_method_entry(); - - __ dispatch_next(vtos); - - // invocation counter overflow - if (inc_counter) { - if (ProfileInterpreter) { - // We have decided to profile this method in the interpreter - __ bind(profile_method); - __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); - __ set_method_data_pointer_for_bcp(); - __ get_method(rbx); - __ jmp(profile_method_continue); - } - // Handle overflow of counter and compile method - __ bind(invocation_counter_overflow); - generate_counter_overflow(&continue_after_compile); - } - - return entry_point; - } - - - // These should never be compiled since the interpreter will prefer - // the compiled version to the intrinsic version. - bool AbstractInterpreter::can_be_compiled(methodHandle m) { - switch (method_kind(m)) { - case Interpreter::java_lang_math_sin : // fall thru - case Interpreter::java_lang_math_cos : // fall thru - case Interpreter::java_lang_math_tan : // fall thru - case Interpreter::java_lang_math_abs : // fall thru - case Interpreter::java_lang_math_log : // fall thru - case Interpreter::java_lang_math_log10 : // fall thru - case Interpreter::java_lang_math_sqrt : // fall thru - case Interpreter::java_lang_math_pow : // fall thru - case Interpreter::java_lang_math_exp : - return false; - default: - return true; - } - } - - // How much stack a method activation needs in words. - int AbstractInterpreter::size_top_interpreter_activation(Method* method) { - - const int stub_code = 4; // see generate_call_stub - // Save space for one monitor to get into the interpreted method in case - // the method is synchronized - int monitor_size = method->is_synchronized() ? - 1*frame::interpreter_frame_monitor_size() : 0; - - // total overhead size: entry_size + (saved rbp, thru expr stack bottom). - // be sure to change this if you add/subtract anything to/from the overhead area - const int overhead_size = -frame::interpreter_frame_initial_sp_offset; - - const int method_stack = (method->max_locals() + method->max_stack()) * - Interpreter::stackElementWords; - return overhead_size + method_stack + stub_code; - } - - //------------------------------------------------------------------------------------------------------------------------ - // Exceptions - - void TemplateInterpreterGenerator::generate_throw_exception() { - // Entry point in previous activation (i.e., if the caller was interpreted) - Interpreter::_rethrow_exception_entry = __ pc(); - const Register thread = rcx; - - // Restore sp to interpreter_frame_last_sp even though we are going - // to empty the expression stack for the exception processing. - __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); - // rax,: exception - // rdx: return address/pc that threw exception - __ restore_bcp(); // rsi points to call/send - __ restore_locals(); - - // Entry point for exceptions thrown within interpreter code - Interpreter::_throw_exception_entry = __ pc(); - // expression stack is undefined here - // rax,: exception - // rsi: exception bcp - __ verify_oop(rax); - - // expression stack must be empty before entering the VM in case of an exception - __ empty_expression_stack(); - __ empty_FPU_stack(); - // find exception handler address and preserve exception oop - __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); - // rax,: exception handler entry point - // rdx: preserved exception oop - // rsi: bcp for exception handler - __ push_ptr(rdx); // push exception which is now the only value on the stack - __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) - - // If the exception is not handled in the current frame the frame is removed and - // the exception is rethrown (i.e. exception continuation is _rethrow_exception). - // - // Note: At this point the bci is still the bxi for the instruction which caused - // the exception and the expression stack is empty. Thus, for any VM calls - // at this point, GC will find a legal oop map (with empty expression stack). - - // In current activation - // tos: exception - // rsi: exception bcp - - // - // JVMTI PopFrame support - // - - Interpreter::_remove_activation_preserving_args_entry = __ pc(); - __ empty_expression_stack(); - __ empty_FPU_stack(); - // Set the popframe_processing bit in pending_popframe_condition indicating that we are - // currently handling popframe, so that call_VMs that may happen later do not trigger new - // popframe handling cycles. - __ get_thread(thread); - __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); - __ orl(rdx, JavaThread::popframe_processing_bit); - __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); - - { - // Check to see whether we are returning to a deoptimized frame. - // (The PopFrame call ensures that the caller of the popped frame is - // either interpreted or compiled and deoptimizes it if compiled.) - // In this case, we can't call dispatch_next() after the frame is - // popped, but instead must save the incoming arguments and restore - // them after deoptimization has occurred. - // - // Note that we don't compare the return PC against the - // deoptimization blob's unpack entry because of the presence of - // adapter frames in C2. - Label caller_not_deoptimized; - __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); - __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); - __ testl(rax, rax); - __ jcc(Assembler::notZero, caller_not_deoptimized); - - // Compute size of arguments for saving when returning to deoptimized caller - __ get_method(rax); - __ movptr(rax, Address(rax, Method::const_offset())); - __ load_unsigned_short(rax, Address(rax, ConstMethod::size_of_parameters_offset())); - __ shlptr(rax, Interpreter::logStackElementSize); - __ restore_locals(); - __ subptr(rdi, rax); - __ addptr(rdi, wordSize); - // Save these arguments - __ get_thread(thread); - __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi); - - __ remove_activation(vtos, rdx, - /* throw_monitor_exception */ false, - /* install_monitor_exception */ false, - /* notify_jvmdi */ false); - - // Inform deoptimization that it is responsible for restoring these arguments - __ get_thread(thread); - __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); - - // Continue in deoptimization handler - __ jmp(rdx); - - __ bind(caller_not_deoptimized); - } - - __ remove_activation(vtos, rdx, - /* throw_monitor_exception */ false, - /* install_monitor_exception */ false, - /* notify_jvmdi */ false); - - // Finish with popframe handling - // A previous I2C followed by a deoptimization might have moved the - // outgoing arguments further up the stack. PopFrame expects the - // mutations to those outgoing arguments to be preserved and other - // constraints basically require this frame to look exactly as - // though it had previously invoked an interpreted activation with - // no space between the top of the expression stack (current - // last_sp) and the top of stack. Rather than force deopt to - // maintain this kind of invariant all the time we call a small - // fixup routine to move the mutated arguments onto the top of our - // expression stack if necessary. - __ mov(rax, rsp); - __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); - __ get_thread(thread); - // PC must point into interpreter here - __ set_last_Java_frame(thread, noreg, rbp, __ pc()); - __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); - __ get_thread(thread); - __ reset_last_Java_frame(thread, true, true); - // Restore the last_sp and null it out - __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); - __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); - - __ restore_bcp(); - __ restore_locals(); - // The method data pointer was incremented already during - // call profiling. We have to restore the mdp for the current bcp. - if (ProfileInterpreter) { - __ set_method_data_pointer_for_bcp(); - } - - // Clear the popframe condition flag - __ get_thread(thread); - __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); - - #if INCLUDE_JVMTI - { - Label L_done; - const Register local0 = rdi; - - __ cmpb(Address(rsi, 0), Bytecodes::_invokestatic); - __ jcc(Assembler::notEqual, L_done); - - // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call. - // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL. - - __ get_method(rdx); - __ movptr(rax, Address(local0, 0)); - __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), rax, rdx, rsi); - - __ testptr(rax, rax); - __ jcc(Assembler::zero, L_done); - - __ movptr(Address(rbx, 0), rax); - __ bind(L_done); - } - #endif // INCLUDE_JVMTI - - __ dispatch_next(vtos); - // end of PopFrame support - - Interpreter::_remove_activation_entry = __ pc(); - - // preserve exception over this code sequence - __ pop_ptr(rax); - __ get_thread(thread); - __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); - // remove the activation (without doing throws on illegalMonitorExceptions) - __ remove_activation(vtos, rdx, false, true, false); - // restore exception - __ get_thread(thread); - __ get_vm_result(rax, thread); - - // Inbetween activations - previous activation type unknown yet - // compute continuation point - the continuation point expects - // the following registers set up: - // - // rax: exception - // rdx: return address/pc that threw exception - // rsp: expression stack of caller - // rbp: rbp, of caller - __ push(rax); // save exception - __ push(rdx); // save return address - __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx); - __ mov(rbx, rax); // save exception handler - __ pop(rdx); // restore return address - __ pop(rax); // restore exception - // Note that an "issuing PC" is actually the next PC after the call - __ jmp(rbx); // jump to exception handler of caller - } - - - // - // JVMTI ForceEarlyReturn support - // - address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { - address entry = __ pc(); - const Register thread = rcx; - - __ restore_bcp(); - __ restore_locals(); - __ empty_expression_stack(); - __ empty_FPU_stack(); - __ load_earlyret_value(state); - - __ get_thread(thread); - __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); - const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); - - // Clear the earlyret state - __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); - - __ remove_activation(state, rsi, - false, /* throw_monitor_exception */ - false, /* install_monitor_exception */ - true); /* notify_jvmdi */ - __ jmp(rsi); - return entry; - } // end of ForceEarlyReturn support - - - //------------------------------------------------------------------------------------------------------------------------ - // Helper for vtos entry point generation - - void TemplateInterpreterGenerator::set_vtos_entry_points (Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) { - assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); - Label L; - fep = __ pc(); __ push(ftos); __ jmp(L); - dep = __ pc(); __ push(dtos); __ jmp(L); - lep = __ pc(); __ push(ltos); __ jmp(L); - aep = __ pc(); __ push(atos); __ jmp(L); - bep = cep = sep = // fall through - iep = __ pc(); __ push(itos); // fall through - vep = __ pc(); __ bind(L); // fall through - generate_and_dispatch(t); - } - - //------------------------------------------------------------------------------------------------------------------------ - // Generation of individual instructions - - // helpers for generate_and_dispatch - - - - InterpreterGenerator::InterpreterGenerator(StubQueue* code) - : TemplateInterpreterGenerator(code) { - generate_all(); // down here so it can be "virtual" - } - - //------------------------------------------------------------------------------------------------------------------------ - - // Non-product code - #ifndef PRODUCT - address TemplateInterpreterGenerator::generate_trace_code(TosState state) { - address entry = __ pc(); - - // prepare expression stack - __ pop(rcx); // pop return address so expression stack is 'pure' - __ push(state); // save tosca - - // pass tosca registers as arguments & call tracer - __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); - __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) - __ pop(state); // restore tosca - - // return - __ jmp(rcx); - - return entry; - } - - - void TemplateInterpreterGenerator::count_bytecode() { - __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); - } - - - void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { - __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); - } - - - void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { - __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); - __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); - __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); - ExternalAddress table((address) BytecodePairHistogram::_counters); - Address index(noreg, rbx, Address::times_4); - __ incrementl(ArrayAddress(table, index)); - } - - - void TemplateInterpreterGenerator::trace_bytecode(Template* t) { - // Call a little run-time stub to avoid blow-up for each bytecode. - // The run-time runtime saves the right registers, depending on - // the tosca in-state for the given template. - assert(Interpreter::trace_code(t->tos_in()) != NULL, - "entry must have been generated"); - __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); - } - - - void TemplateInterpreterGenerator::stop_interpreter_at() { - Label L; - __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), - StopInterpreterAt); - __ jcc(Assembler::notEqual, L); - __ int3(); - __ bind(L); - } - #endif // !PRODUCT #endif // CC_INTERP --- 319,324 ----
src/cpu/x86/vm/templateInterpreterGenerator_x86_32.cpp
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