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src/cpu/sparc/vm/c1_Runtime1_sparc.cpp@61b2245abf36 (annotated)

src/cpu/sparc/vm/c1_Runtime1_sparc.cpp

Fri, 21 May 2010 02:59:24 -0700

author

twisti

date

Fri, 21 May 2010 02:59:24 -0700

changeset 1919

61b2245abf36

parent 1730

3cf667df43ef

child 1934

e9ff18c4ace7

permissions

-rw-r--r--

6930772: JSR 292 needs to support SPARC C1
Summary: C1 for SPARC needs to support JSR 292.
Reviewed-by: never, jrose

duke@435	1	/*
twisti@1730	2	* Copyright 1999-2010 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	#include "incls/_precompiled.incl"
duke@435	26	#include "incls/_c1_Runtime1_sparc.cpp.incl"
duke@435	27
duke@435	28	// Implementation of StubAssembler
duke@435	29
duke@435	30	int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry_point, int number_of_arguments) {
duke@435	31	// for sparc changing the number of arguments doesn't change
duke@435	32	// anything about the frame size so we'll always lie and claim that
duke@435	33	// we are only passing 1 argument.
duke@435	34	set_num_rt_args(1);
duke@435	35
duke@435	36	assert_not_delayed();
duke@435	37	// bang stack before going to runtime
duke@435	38	set(-os::vm_page_size() + STACK_BIAS, G3_scratch);
duke@435	39	st(G0, SP, G3_scratch);
duke@435	40
duke@435	41	// debugging support
duke@435	42	assert(number_of_arguments >= 0 , "cannot have negative number of arguments");
duke@435	43
duke@435	44	set_last_Java_frame(SP, noreg);
duke@435	45	if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early
duke@435	46	save_thread(L7_thread_cache);
duke@435	47	// do the call
duke@435	48	call(entry_point, relocInfo::runtime_call_type);
duke@435	49	if (!VerifyThread) {
duke@435	50	delayed()->mov(G2_thread, O0); // pass thread as first argument
duke@435	51	} else {
duke@435	52	delayed()->nop(); // (thread already passed)
duke@435	53	}
duke@435	54	int call_offset = offset(); // offset of return address
duke@435	55	restore_thread(L7_thread_cache);
duke@435	56	reset_last_Java_frame();
duke@435	57
duke@435	58	// check for pending exceptions
duke@435	59	{ Label L;
twisti@1162	60	Address exception_addr(G2_thread, Thread::pending_exception_offset());
duke@435	61	ld_ptr(exception_addr, Gtemp);
duke@435	62	br_null(Gtemp, false, pt, L);
duke@435	63	delayed()->nop();
twisti@1162	64	Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
duke@435	65	st_ptr(G0, vm_result_addr);
twisti@1162	66	Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
duke@435	67	st_ptr(G0, vm_result_addr_2);
duke@435	68
duke@435	69	if (frame_size() == no_frame_size) {
duke@435	70	// we use O7 linkage so that forward_exception_entry has the issuing PC
duke@435	71	call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type);
duke@435	72	delayed()->restore();
duke@435	73	} else if (_stub_id == Runtime1::forward_exception_id) {
duke@435	74	should_not_reach_here();
duke@435	75	} else {
twisti@1162	76	AddressLiteral exc(Runtime1::entry_for(Runtime1::forward_exception_id));
twisti@1162	77	jump_to(exc, G4);
duke@435	78	delayed()->nop();
duke@435	79	}
duke@435	80	bind(L);
duke@435	81	}
duke@435	82
duke@435	83	// get oop result if there is one and reset the value in the thread
duke@435	84	if (oop_result1->is_valid()) { // get oop result if there is one and reset it in the thread
duke@435	85	get_vm_result (oop_result1);
duke@435	86	} else {
duke@435	87	// be a little paranoid and clear the result
twisti@1162	88	Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
duke@435	89	st_ptr(G0, vm_result_addr);
duke@435	90	}
duke@435	91
duke@435	92	if (oop_result2->is_valid()) {
duke@435	93	get_vm_result_2(oop_result2);
duke@435	94	} else {
duke@435	95	// be a little paranoid and clear the result
twisti@1162	96	Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
duke@435	97	st_ptr(G0, vm_result_addr_2);
duke@435	98	}
duke@435	99
duke@435	100	return call_offset;
duke@435	101	}
duke@435	102
duke@435	103
duke@435	104	int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1) {
duke@435	105	// O0 is reserved for the thread
duke@435	106	mov(arg1, O1);
duke@435	107	return call_RT(oop_result1, oop_result2, entry, 1);
duke@435	108	}
duke@435	109
duke@435	110
duke@435	111	int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2) {
duke@435	112	// O0 is reserved for the thread
duke@435	113	mov(arg1, O1);
duke@435	114	mov(arg2, O2); assert(arg2 != O1, "smashed argument");
duke@435	115	return call_RT(oop_result1, oop_result2, entry, 2);
duke@435	116	}
duke@435	117
duke@435	118
duke@435	119	int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2, Register arg3) {
duke@435	120	// O0 is reserved for the thread
duke@435	121	mov(arg1, O1);
duke@435	122	mov(arg2, O2); assert(arg2 != O1, "smashed argument");
duke@435	123	mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument");
duke@435	124	return call_RT(oop_result1, oop_result2, entry, 3);
duke@435	125	}
duke@435	126
duke@435	127
duke@435	128	// Implementation of Runtime1
duke@435	129
duke@435	130	#define __ sasm->
duke@435	131
duke@435	132	static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs];
duke@435	133	static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs];
duke@435	134	static int reg_save_size_in_words;
duke@435	135	static int frame_size_in_bytes = -1;
duke@435	136
duke@435	137	static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) {
duke@435	138	assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words),
duke@435	139	" mismatch in calculation");
duke@435	140	sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
duke@435	141	int frame_size_in_slots = frame_size_in_bytes / sizeof(jint);
duke@435	142	OopMap* oop_map = new OopMap(frame_size_in_slots, 0);
duke@435	143
duke@435	144	int i;
duke@435	145	for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
duke@435	146	Register r = as_Register(i);
duke@435	147	if (r == G1 || r == G3 || r == G4 || r == G5) {
duke@435	148	int sp_offset = cpu_reg_save_offsets[i];
duke@435	149	oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
duke@435	150	r->as_VMReg());
duke@435	151	}
duke@435	152	}
duke@435	153
duke@435	154	if (save_fpu_registers) {
duke@435	155	for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
duke@435	156	FloatRegister r = as_FloatRegister(i);
duke@435	157	int sp_offset = fpu_reg_save_offsets[i];
duke@435	158	oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
duke@435	159	r->as_VMReg());
duke@435	160	}
duke@435	161	}
duke@435	162	return oop_map;
duke@435	163	}
duke@435	164
duke@435	165	static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) {
duke@435	166	assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words),
duke@435	167	" mismatch in calculation");
duke@435	168	__ save_frame_c1(frame_size_in_bytes);
duke@435	169	sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
duke@435	170
duke@435	171	// Record volatile registers as callee-save values in an OopMap so their save locations will be
duke@435	172	// propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for
duke@435	173	// deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers
duke@435	174	// are saved in register windows - I's and L's in the caller's frame and O's in the stub frame
duke@435	175	// (as the stub's I's) when the runtime routine called by the stub creates its frame.
duke@435	176	// OopMap frame sizes are in c2 stack slot sizes (sizeof(jint))
duke@435	177
duke@435	178	int i;
duke@435	179	for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
duke@435	180	Register r = as_Register(i);
duke@435	181	if (r == G1 || r == G3 || r == G4 || r == G5) {
duke@435	182	int sp_offset = cpu_reg_save_offsets[i];
duke@435	183	__ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS);
duke@435	184	}
duke@435	185	}
duke@435	186
duke@435	187	if (save_fpu_registers) {
duke@435	188	for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
duke@435	189	FloatRegister r = as_FloatRegister(i);
duke@435	190	int sp_offset = fpu_reg_save_offsets[i];
duke@435	191	__ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS);
duke@435	192	}
duke@435	193	}
duke@435	194
duke@435	195	return generate_oop_map(sasm, save_fpu_registers);
duke@435	196	}
duke@435	197
duke@435	198	static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) {
duke@435	199	for (int i = 0; i < FrameMap::nof_cpu_regs; i++) {
duke@435	200	Register r = as_Register(i);
duke@435	201	if (r == G1 || r == G3 || r == G4 || r == G5) {
duke@435	202	__ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r);
duke@435	203	}
duke@435	204	}
duke@435	205
duke@435	206	if (restore_fpu_registers) {
duke@435	207	for (int i = 0; i < FrameMap::nof_fpu_regs; i++) {
duke@435	208	FloatRegister r = as_FloatRegister(i);
duke@435	209	__ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r);
duke@435	210	}
duke@435	211	}
duke@435	212	}
duke@435	213
duke@435	214
duke@435	215	void Runtime1::initialize_pd() {
duke@435	216	// compute word offsets from SP at which live (non-windowed) registers are captured by stub routines
duke@435	217	//
duke@435	218	// A stub routine will have a frame that is at least large enough to hold
duke@435	219	// a register window save area (obviously) and the volatile g registers
duke@435	220	// and floating registers. A user of save_live_registers can have a frame
duke@435	221	// that has more scratch area in it (although typically they will use L-regs).
duke@435	222	// in that case the frame will look like this (stack growing down)
duke@435	223	//
duke@435	224	// FP -> | |
duke@435	225	// | scratch mem |
duke@435	226	// | " " |
duke@435	227	// --------------
duke@435	228	// | float regs |
duke@435	229	// | " " |
duke@435	230	// ---------------
duke@435	231	// | G regs |
duke@435	232	// | " " |
duke@435	233	// ---------------
duke@435	234	// | abi reg. |
duke@435	235	// | window save |
duke@435	236	// | area |
duke@435	237	// SP -> ---------------
duke@435	238	//
duke@435	239	int i;
duke@435	240	int sp_offset = round_to(frame::register_save_words, 2); // start doubleword aligned
duke@435	241
duke@435	242	// only G int registers are saved explicitly; others are found in register windows
duke@435	243	for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
duke@435	244	Register r = as_Register(i);
duke@435	245	if (r == G1 || r == G3 || r == G4 || r == G5) {
duke@435	246	cpu_reg_save_offsets[i] = sp_offset;
duke@435	247	sp_offset++;
duke@435	248	}
duke@435	249	}
duke@435	250
duke@435	251	// all float registers are saved explicitly
duke@435	252	assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here");
duke@435	253	for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
duke@435	254	fpu_reg_save_offsets[i] = sp_offset;
duke@435	255	sp_offset++;
duke@435	256	}
duke@435	257	reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset;
duke@435	258	// this should match assembler::total_frame_size_in_bytes, which
duke@435	259	// isn't callable from this context. It's checked by an assert when
duke@435	260	// it's used though.
duke@435	261	frame_size_in_bytes = align_size_up(sp_offset * wordSize, 8);
duke@435	262	}
duke@435	263
duke@435	264
duke@435	265	OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) {
duke@435	266	// make a frame and preserve the caller's caller-save registers
duke@435	267	OopMap* oop_map = save_live_registers(sasm);
duke@435	268	int call_offset;
duke@435	269	if (!has_argument) {
duke@435	270	call_offset = __ call_RT(noreg, noreg, target);
duke@435	271	} else {
duke@435	272	call_offset = __ call_RT(noreg, noreg, target, G4);
duke@435	273	}
duke@435	274	OopMapSet* oop_maps = new OopMapSet();
duke@435	275	oop_maps->add_gc_map(call_offset, oop_map);
duke@435	276
duke@435	277	__ should_not_reach_here();
duke@435	278	return oop_maps;
duke@435	279	}
duke@435	280
duke@435	281
duke@435	282	OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target,
duke@435	283	Register arg1, Register arg2, Register arg3) {
duke@435	284	// make a frame and preserve the caller's caller-save registers
duke@435	285	OopMap* oop_map = save_live_registers(sasm);
duke@435	286
duke@435	287	int call_offset;
duke@435	288	if (arg1 == noreg) {
duke@435	289	call_offset = __ call_RT(result, noreg, target);
duke@435	290	} else if (arg2 == noreg) {
duke@435	291	call_offset = __ call_RT(result, noreg, target, arg1);
duke@435	292	} else if (arg3 == noreg) {
duke@435	293	call_offset = __ call_RT(result, noreg, target, arg1, arg2);
duke@435	294	} else {
duke@435	295	call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3);
duke@435	296	}
duke@435	297	OopMapSet* oop_maps = NULL;
duke@435	298
duke@435	299	oop_maps = new OopMapSet();
duke@435	300	oop_maps->add_gc_map(call_offset, oop_map);
duke@435	301	restore_live_registers(sasm);
duke@435	302
duke@435	303	__ ret();
duke@435	304	__ delayed()->restore();
duke@435	305
duke@435	306	return oop_maps;
duke@435	307	}
duke@435	308
duke@435	309
duke@435	310	OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
duke@435	311	// make a frame and preserve the caller's caller-save registers
duke@435	312	OopMap* oop_map = save_live_registers(sasm);
duke@435	313
duke@435	314	// call the runtime patching routine, returns non-zero if nmethod got deopted.
duke@435	315	int call_offset = __ call_RT(noreg, noreg, target);
duke@435	316	OopMapSet* oop_maps = new OopMapSet();
duke@435	317	oop_maps->add_gc_map(call_offset, oop_map);
duke@435	318
duke@435	319	// re-execute the patched instruction or, if the nmethod was deoptmized, return to the
duke@435	320	// deoptimization handler entry that will cause re-execution of the current bytecode
duke@435	321	DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
duke@435	322	assert(deopt_blob != NULL, "deoptimization blob must have been created");
duke@435	323
duke@435	324	Label no_deopt;
duke@435	325	__ tst(O0);
duke@435	326	__ brx(Assembler::equal, false, Assembler::pt, no_deopt);
duke@435	327	__ delayed()->nop();
duke@435	328
duke@435	329	// return to the deoptimization handler entry for unpacking and rexecute
duke@435	330	// if we simply returned the we'd deopt as if any call we patched had just
duke@435	331	// returned.
duke@435	332
duke@435	333	restore_live_registers(sasm);
duke@435	334	__ restore();
duke@435	335	__ br(Assembler::always, false, Assembler::pt, deopt_blob->unpack_with_reexecution(), relocInfo::runtime_call_type);
duke@435	336	__ delayed()->nop();
duke@435	337
duke@435	338	__ bind(no_deopt);
duke@435	339	restore_live_registers(sasm);
duke@435	340	__ ret();
duke@435	341	__ delayed()->restore();
duke@435	342
duke@435	343	return oop_maps;
duke@435	344	}
duke@435	345
duke@435	346	OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
duke@435	347
duke@435	348	OopMapSet* oop_maps = NULL;
duke@435	349	// for better readability
duke@435	350	const bool must_gc_arguments = true;
duke@435	351	const bool dont_gc_arguments = false;
duke@435	352
duke@435	353	// stub code & info for the different stubs
duke@435	354	switch (id) {
duke@435	355	case forward_exception_id:
duke@435	356	{
duke@435	357	// we're handling an exception in the context of a compiled
duke@435	358	// frame. The registers have been saved in the standard
duke@435	359	// places. Perform an exception lookup in the caller and
duke@435	360	// dispatch to the handler if found. Otherwise unwind and
duke@435	361	// dispatch to the callers exception handler.
duke@435	362
duke@435	363	oop_maps = new OopMapSet();
duke@435	364	OopMap* oop_map = generate_oop_map(sasm, true);
duke@435	365
duke@435	366	// transfer the pending exception to the exception_oop
duke@435	367	__ ld_ptr(G2_thread, in_bytes(JavaThread::pending_exception_offset()), Oexception);
duke@435	368	__ ld_ptr(Oexception, 0, G0);
duke@435	369	__ st_ptr(G0, G2_thread, in_bytes(JavaThread::pending_exception_offset()));
duke@435	370	__ add(I7, frame::pc_return_offset, Oissuing_pc);
duke@435	371
duke@435	372	generate_handle_exception(sasm, oop_maps, oop_map);
duke@435	373	__ should_not_reach_here();
duke@435	374	}
duke@435	375	break;
duke@435	376
duke@435	377	case new_instance_id:
duke@435	378	case fast_new_instance_id:
duke@435	379	case fast_new_instance_init_check_id:
duke@435	380	{
duke@435	381	Register G5_klass = G5; // Incoming
duke@435	382	Register O0_obj = O0; // Outgoing
duke@435	383
duke@435	384	if (id == new_instance_id) {
duke@435	385	__ set_info("new_instance", dont_gc_arguments);
duke@435	386	} else if (id == fast_new_instance_id) {
duke@435	387	__ set_info("fast new_instance", dont_gc_arguments);
duke@435	388	} else {
duke@435	389	assert(id == fast_new_instance_init_check_id, "bad StubID");
duke@435	390	__ set_info("fast new_instance init check", dont_gc_arguments);
duke@435	391	}
duke@435	392
duke@435	393	if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) &&
duke@435	394	UseTLAB && FastTLABRefill) {
duke@435	395	Label slow_path;
duke@435	396	Register G1_obj_size = G1;
duke@435	397	Register G3_t1 = G3;
duke@435	398	Register G4_t2 = G4;
duke@435	399	assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2);
duke@435	400
duke@435	401	// Push a frame since we may do dtrace notification for the
duke@435	402	// allocation which requires calling out and we don't want
duke@435	403	// to stomp the real return address.
duke@435	404	__ save_frame(0);
duke@435	405
duke@435	406	if (id == fast_new_instance_init_check_id) {
duke@435	407	// make sure the klass is initialized
duke@435	408	__ ld(G5_klass, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc), G3_t1);
duke@435	409	__ cmp(G3_t1, instanceKlass::fully_initialized);
duke@435	410	__ br(Assembler::notEqual, false, Assembler::pn, slow_path);
duke@435	411	__ delayed()->nop();
duke@435	412	}
duke@435	413	#ifdef ASSERT
duke@435	414	// assert object can be fast path allocated
duke@435	415	{
duke@435	416	Label ok, not_ok;
duke@435	417	__ ld(G5_klass, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc), G1_obj_size);
duke@435	418	__ cmp(G1_obj_size, 0); // make sure it's an instance (LH > 0)
duke@435	419	__ br(Assembler::lessEqual, false, Assembler::pn, not_ok);
duke@435	420	__ delayed()->nop();
duke@435	421	__ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size);
duke@435	422	__ br(Assembler::zero, false, Assembler::pn, ok);
duke@435	423	__ delayed()->nop();
duke@435	424	__ bind(not_ok);
duke@435	425	__ stop("assert(can be fast path allocated)");
duke@435	426	__ should_not_reach_here();
duke@435	427	__ bind(ok);
duke@435	428	}
duke@435	429	#endif // ASSERT
duke@435	430	// if we got here then the TLAB allocation failed, so try
duke@435	431	// refilling the TLAB or allocating directly from eden.
duke@435	432	Label retry_tlab, try_eden;
duke@435	433	__ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G5_klass
duke@435	434
duke@435	435	__ bind(retry_tlab);
duke@435	436
duke@435	437	// get the instance size
duke@435	438	__ ld(G5_klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes(), G1_obj_size);
duke@435	439	__ tlab_allocate(O0_obj, G1_obj_size, 0, G3_t1, slow_path);
duke@435	440	__ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2);
duke@435	441	__ verify_oop(O0_obj);
duke@435	442	__ mov(O0, I0);
duke@435	443	__ ret();
duke@435	444	__ delayed()->restore();
duke@435	445
duke@435	446	__ bind(try_eden);
duke@435	447	// get the instance size
duke@435	448	__ ld(G5_klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes(), G1_obj_size);
duke@435	449	__ eden_allocate(O0_obj, G1_obj_size, 0, G3_t1, G4_t2, slow_path);
duke@435	450	__ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2);
duke@435	451	__ verify_oop(O0_obj);
duke@435	452	__ mov(O0, I0);
duke@435	453	__ ret();
duke@435	454	__ delayed()->restore();
duke@435	455
duke@435	456	__ bind(slow_path);
duke@435	457
duke@435	458	// pop this frame so generate_stub_call can push it's own
duke@435	459	__ restore();
duke@435	460	}
duke@435	461
duke@435	462	oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_instance), G5_klass);
duke@435	463	// I0->O0: new instance
duke@435	464	}
duke@435	465
duke@435	466	break;
duke@435	467
duke@435	468	#ifdef TIERED
duke@435	469	case counter_overflow_id:
duke@435	470	// G4 contains bci
duke@435	471	oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), G4);
duke@435	472	break;
duke@435	473	#endif // TIERED
duke@435	474
duke@435	475	case new_type_array_id:
duke@435	476	case new_object_array_id:
duke@435	477	{
duke@435	478	Register G5_klass = G5; // Incoming
duke@435	479	Register G4_length = G4; // Incoming
duke@435	480	Register O0_obj = O0; // Outgoing
duke@435	481
twisti@1162	482	Address klass_lh(G5_klass, ((klassOopDesc::header_size() * HeapWordSize)
twisti@1162	483	+ Klass::layout_helper_offset_in_bytes()));
duke@435	484	assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise");
duke@435	485	assert(Klass::_lh_header_size_mask == 0xFF, "bytewise");
duke@435	486	// Use this offset to pick out an individual byte of the layout_helper:
duke@435	487	const int klass_lh_header_size_offset = ((BytesPerInt - 1) // 3 - 2 selects byte {0,1,0,0}
duke@435	488	- Klass::_lh_header_size_shift / BitsPerByte);
duke@435	489
duke@435	490	if (id == new_type_array_id) {
duke@435	491	__ set_info("new_type_array", dont_gc_arguments);
duke@435	492	} else {
duke@435	493	__ set_info("new_object_array", dont_gc_arguments);
duke@435	494	}
duke@435	495
duke@435	496	#ifdef ASSERT
duke@435	497	// assert object type is really an array of the proper kind
duke@435	498	{
duke@435	499	Label ok;
duke@435	500	Register G3_t1 = G3;
duke@435	501	__ ld(klass_lh, G3_t1);
duke@435	502	__ sra(G3_t1, Klass::_lh_array_tag_shift, G3_t1);
duke@435	503	int tag = ((id == new_type_array_id)
duke@435	504	? Klass::_lh_array_tag_type_value
duke@435	505	: Klass::_lh_array_tag_obj_value);
duke@435	506	__ cmp(G3_t1, tag);
duke@435	507	__ brx(Assembler::equal, false, Assembler::pt, ok);
duke@435	508	__ delayed()->nop();
duke@435	509	__ stop("assert(is an array klass)");
duke@435	510	__ should_not_reach_here();
duke@435	511	__ bind(ok);
duke@435	512	}
duke@435	513	#endif // ASSERT
duke@435	514
duke@435	515	if (UseTLAB && FastTLABRefill) {
duke@435	516	Label slow_path;
duke@435	517	Register G1_arr_size = G1;
duke@435	518	Register G3_t1 = G3;
duke@435	519	Register O1_t2 = O1;
duke@435	520	assert_different_registers(G5_klass, G4_length, G1_arr_size, G3_t1, O1_t2);
duke@435	521
duke@435	522	// check that array length is small enough for fast path
duke@435	523	__ set(C1_MacroAssembler::max_array_allocation_length, G3_t1);
duke@435	524	__ cmp(G4_length, G3_t1);
duke@435	525	__ br(Assembler::greaterUnsigned, false, Assembler::pn, slow_path);
duke@435	526	__ delayed()->nop();
duke@435	527
duke@435	528	// if we got here then the TLAB allocation failed, so try
duke@435	529	// refilling the TLAB or allocating directly from eden.
duke@435	530	Label retry_tlab, try_eden;
duke@435	531	__ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G4_length and G5_klass
duke@435	532
duke@435	533	__ bind(retry_tlab);
duke@435	534
duke@435	535	// get the allocation size: (length << (layout_helper & 0x1F)) + header_size
duke@435	536	__ ld(klass_lh, G3_t1);
duke@435	537	__ sll(G4_length, G3_t1, G1_arr_size);
duke@435	538	__ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1);
duke@435	539	__ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1);
duke@435	540	__ add(G1_arr_size, G3_t1, G1_arr_size);
duke@435	541	__ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); // align up
duke@435	542	__ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size);
duke@435	543
duke@435	544	__ tlab_allocate(O0_obj, G1_arr_size, 0, G3_t1, slow_path); // preserves G1_arr_size
duke@435	545
duke@435	546	__ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2);
duke@435	547	__ ldub(klass_lh, G3_t1, klass_lh_header_size_offset);
duke@435	548	__ sub(G1_arr_size, G3_t1, O1_t2); // body length
duke@435	549	__ add(O0_obj, G3_t1, G3_t1); // body start
duke@435	550	__ initialize_body(G3_t1, O1_t2);
duke@435	551	__ verify_oop(O0_obj);
duke@435	552	__ retl();
duke@435	553	__ delayed()->nop();
duke@435	554
duke@435	555	__ bind(try_eden);
duke@435	556	// get the allocation size: (length << (layout_helper & 0x1F)) + header_size
duke@435	557	__ ld(klass_lh, G3_t1);
duke@435	558	__ sll(G4_length, G3_t1, G1_arr_size);
duke@435	559	__ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1);
duke@435	560	__ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1);
duke@435	561	__ add(G1_arr_size, G3_t1, G1_arr_size);
duke@435	562	__ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size);
duke@435	563	__ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size);
duke@435	564
duke@435	565	__ eden_allocate(O0_obj, G1_arr_size, 0, G3_t1, O1_t2, slow_path); // preserves G1_arr_size
duke@435	566
duke@435	567	__ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2);
duke@435	568	__ ldub(klass_lh, G3_t1, klass_lh_header_size_offset);
duke@435	569	__ sub(G1_arr_size, G3_t1, O1_t2); // body length
duke@435	570	__ add(O0_obj, G3_t1, G3_t1); // body start
duke@435	571	__ initialize_body(G3_t1, O1_t2);
duke@435	572	__ verify_oop(O0_obj);
duke@435	573	__ retl();
duke@435	574	__ delayed()->nop();
duke@435	575
duke@435	576	__ bind(slow_path);
duke@435	577	}
duke@435	578
duke@435	579	if (id == new_type_array_id) {
duke@435	580	oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_type_array), G5_klass, G4_length);
duke@435	581	} else {
duke@435	582	oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_object_array), G5_klass, G4_length);
duke@435	583	}
duke@435	584	// I0 -> O0: new array
duke@435	585	}
duke@435	586	break;
duke@435	587
duke@435	588	case new_multi_array_id:
duke@435	589	{ // O0: klass
duke@435	590	// O1: rank
duke@435	591	// O2: address of 1st dimension
duke@435	592	__ set_info("new_multi_array", dont_gc_arguments);
duke@435	593	oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_multi_array), I0, I1, I2);
duke@435	594	// I0 -> O0: new multi array
duke@435	595	}
duke@435	596	break;
duke@435	597
duke@435	598	case register_finalizer_id:
duke@435	599	{
duke@435	600	__ set_info("register_finalizer", dont_gc_arguments);
duke@435	601
duke@435	602	// load the klass and check the has finalizer flag
duke@435	603	Label register_finalizer;
duke@435	604	Register t = O1;
duke@435	605	__ ld_ptr(O0, oopDesc::klass_offset_in_bytes(), t);
duke@435	606	__ ld(t, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc), t);
duke@435	607	__ set(JVM_ACC_HAS_FINALIZER, G3);
duke@435	608	__ andcc(G3, t, G0);
duke@435	609	__ br(Assembler::notZero, false, Assembler::pt, register_finalizer);
duke@435	610	__ delayed()->nop();
duke@435	611
duke@435	612	// do a leaf return
duke@435	613	__ retl();
duke@435	614	__ delayed()->nop();
duke@435	615
duke@435	616	__ bind(register_finalizer);
duke@435	617	OopMap* oop_map = save_live_registers(sasm);
duke@435	618	int call_offset = __ call_RT(noreg, noreg,
duke@435	619	CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), I0);
duke@435	620	oop_maps = new OopMapSet();
duke@435	621	oop_maps->add_gc_map(call_offset, oop_map);
duke@435	622
duke@435	623	// Now restore all the live registers
duke@435	624	restore_live_registers(sasm);
duke@435	625
duke@435	626	__ ret();
duke@435	627	__ delayed()->restore();
duke@435	628	}
duke@435	629	break;
duke@435	630
duke@435	631	case throw_range_check_failed_id:
duke@435	632	{ __ set_info("range_check_failed", dont_gc_arguments); // arguments will be discarded
duke@435	633	// G4: index
duke@435	634	oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true);
duke@435	635	}
duke@435	636	break;
duke@435	637
duke@435	638	case throw_index_exception_id:
duke@435	639	{ __ set_info("index_range_check_failed", dont_gc_arguments); // arguments will be discarded
duke@435	640	// G4: index
duke@435	641	oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true);
duke@435	642	}
duke@435	643	break;
duke@435	644
duke@435	645	case throw_div0_exception_id:
duke@435	646	{ __ set_info("throw_div0_exception", dont_gc_arguments);
duke@435	647	oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false);
duke@435	648	}
duke@435	649	break;
duke@435	650
duke@435	651	case throw_null_pointer_exception_id:
duke@435	652	{ __ set_info("throw_null_pointer_exception", dont_gc_arguments);
duke@435	653	oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false);
duke@435	654	}
duke@435	655	break;
duke@435	656
duke@435	657	case handle_exception_id:
duke@435	658	{
duke@435	659	__ set_info("handle_exception", dont_gc_arguments);
duke@435	660	// make a frame and preserve the caller's caller-save registers
duke@435	661
duke@435	662	oop_maps = new OopMapSet();
duke@435	663	OopMap* oop_map = save_live_registers(sasm);
duke@435	664	__ mov(Oexception->after_save(), Oexception);
duke@435	665	__ mov(Oissuing_pc->after_save(), Oissuing_pc);
duke@435	666	generate_handle_exception(sasm, oop_maps, oop_map);
duke@435	667	}
duke@435	668	break;
duke@435	669
duke@435	670	case unwind_exception_id:
duke@435	671	{
duke@435	672	// O0: exception
duke@435	673	// I7: address of call to this method
duke@435	674
duke@435	675	__ set_info("unwind_exception", dont_gc_arguments);
duke@435	676	__ mov(Oexception, Oexception->after_save());
duke@435	677	__ add(I7, frame::pc_return_offset, Oissuing_pc->after_save());
duke@435	678
duke@435	679	__ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address),
twisti@1730	680	G2_thread, Oissuing_pc->after_save());
duke@435	681	__ verify_not_null_oop(Oexception->after_save());
twisti@1919	682
twisti@1919	683	// Restore SP from L7 if the exception PC is a MethodHandle call site.
twisti@1919	684	__ mov(O0, G5); // Save the target address.
twisti@1919	685	__ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0);
twisti@1919	686	__ tst(L0); // Condition codes are preserved over the restore.
twisti@1919	687	__ restore();
twisti@1919	688
twisti@1919	689	__ jmp(G5, 0);
twisti@1919	690	__ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required.
duke@435	691	}
duke@435	692	break;
duke@435	693
duke@435	694	case throw_array_store_exception_id:
duke@435	695	{
duke@435	696	__ set_info("throw_array_store_exception", dont_gc_arguments);
duke@435	697	oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), false);
duke@435	698	}
duke@435	699	break;
duke@435	700
duke@435	701	case throw_class_cast_exception_id:
duke@435	702	{
duke@435	703	// G4: object
duke@435	704	__ set_info("throw_class_cast_exception", dont_gc_arguments);
duke@435	705	oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true);
duke@435	706	}
duke@435	707	break;
duke@435	708
duke@435	709	case throw_incompatible_class_change_error_id:
duke@435	710	{
duke@435	711	__ set_info("throw_incompatible_class_cast_exception", dont_gc_arguments);
duke@435	712	oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false);
duke@435	713	}
duke@435	714	break;
duke@435	715
duke@435	716	case slow_subtype_check_id:
duke@435	717	{ // Support for uint StubRoutine::partial_subtype_check( Klass sub, Klass super );
duke@435	718	// Arguments :
duke@435	719	//
duke@435	720	// ret : G3
duke@435	721	// sub : G3, argument, destroyed
duke@435	722	// super: G1, argument, not changed
duke@435	723	// raddr: O7, blown by call
jrose@1079	724	Label miss;
duke@435	725
duke@435	726	__ save_frame(0); // Blow no registers!
duke@435	727
jrose@1079	728	__ check_klass_subtype_slow_path(G3, G1, L0, L1, L2, L4, NULL, &miss);
duke@435	729
duke@435	730	__ mov(1, G3);
jrose@1079	731	__ ret(); // Result in G5 is 'true'
duke@435	732	__ delayed()->restore(); // free copy or add can go here
duke@435	733
duke@435	734	__ bind(miss);
duke@435	735	__ mov(0, G3);
jrose@1079	736	__ ret(); // Result in G5 is 'false'
duke@435	737	__ delayed()->restore(); // free copy or add can go here
duke@435	738	}
duke@435	739
duke@435	740	case monitorenter_nofpu_id:
duke@435	741	case monitorenter_id:
duke@435	742	{ // G4: object
duke@435	743	// G5: lock address
duke@435	744	__ set_info("monitorenter", dont_gc_arguments);
duke@435	745
duke@435	746	int save_fpu_registers = (id == monitorenter_id);
duke@435	747	// make a frame and preserve the caller's caller-save registers
duke@435	748	OopMap* oop_map = save_live_registers(sasm, save_fpu_registers);
duke@435	749
duke@435	750	int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), G4, G5);
duke@435	751
duke@435	752	oop_maps = new OopMapSet();
duke@435	753	oop_maps->add_gc_map(call_offset, oop_map);
duke@435	754	restore_live_registers(sasm, save_fpu_registers);
duke@435	755
duke@435	756	__ ret();
duke@435	757	__ delayed()->restore();
duke@435	758	}
duke@435	759	break;
duke@435	760
duke@435	761	case monitorexit_nofpu_id:
duke@435	762	case monitorexit_id:
duke@435	763	{ // G4: lock address
duke@435	764	// note: really a leaf routine but must setup last java sp
duke@435	765	// => use call_RT for now (speed can be improved by
duke@435	766	// doing last java sp setup manually)
duke@435	767	__ set_info("monitorexit", dont_gc_arguments);
duke@435	768
duke@435	769	int save_fpu_registers = (id == monitorexit_id);
duke@435	770	// make a frame and preserve the caller's caller-save registers
duke@435	771	OopMap* oop_map = save_live_registers(sasm, save_fpu_registers);
duke@435	772
duke@435	773	int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), G4);
duke@435	774
duke@435	775	oop_maps = new OopMapSet();
duke@435	776	oop_maps->add_gc_map(call_offset, oop_map);
duke@435	777	restore_live_registers(sasm, save_fpu_registers);
duke@435	778
duke@435	779	__ ret();
duke@435	780	__ delayed()->restore();
duke@435	781
duke@435	782	}
duke@435	783	break;
duke@435	784
duke@435	785	case access_field_patching_id:
duke@435	786	{ __ set_info("access_field_patching", dont_gc_arguments);
duke@435	787	oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching));
duke@435	788	}
duke@435	789	break;
duke@435	790
duke@435	791	case load_klass_patching_id:
duke@435	792	{ __ set_info("load_klass_patching", dont_gc_arguments);
duke@435	793	oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching));
duke@435	794	}
duke@435	795	break;
duke@435	796
duke@435	797	case jvmti_exception_throw_id:
duke@435	798	{ // Oexception : exception
duke@435	799	__ set_info("jvmti_exception_throw", dont_gc_arguments);
duke@435	800	oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, Runtime1::post_jvmti_exception_throw), I0);
duke@435	801	}
duke@435	802	break;
duke@435	803
duke@435	804	case dtrace_object_alloc_id:
duke@435	805	{ // O0: object
duke@435	806	__ set_info("dtrace_object_alloc", dont_gc_arguments);
duke@435	807	// we can't gc here so skip the oopmap but make sure that all
duke@435	808	// the live registers get saved.
duke@435	809	save_live_registers(sasm);
duke@435	810
duke@435	811	__ save_thread(L7_thread_cache);
duke@435	812	__ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc),
duke@435	813	relocInfo::runtime_call_type);
duke@435	814	__ delayed()->mov(I0, O0);
duke@435	815	__ restore_thread(L7_thread_cache);
duke@435	816
duke@435	817	restore_live_registers(sasm);
duke@435	818	__ ret();
duke@435	819	__ delayed()->restore();
duke@435	820	}
duke@435	821	break;
duke@435	822
ysr@777	823	#ifndef SERIALGC
ysr@777	824	case g1_pre_barrier_slow_id:
ysr@777	825	{ // G4: previous value of memory
ysr@777	826	BarrierSet* bs = Universe::heap()->barrier_set();
ysr@777	827	if (bs->kind() != BarrierSet::G1SATBCTLogging) {
ysr@777	828	__ save_frame(0);
ysr@777	829	__ set((int)id, O1);
ysr@777	830	__ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0);
ysr@777	831	__ should_not_reach_here();
ysr@777	832	break;
ysr@777	833	}
ysr@777	834
ysr@777	835	__ set_info("g1_pre_barrier_slow_id", dont_gc_arguments);
ysr@777	836
ysr@777	837	Register pre_val = G4;
ysr@777	838	Register tmp = G1_scratch;
ysr@777	839	Register tmp2 = G3_scratch;
ysr@777	840
ysr@777	841	Label refill, restart;
ysr@777	842	bool with_frame = false; // I don't know if we can do with-frame.
ysr@777	843	int satb_q_index_byte_offset =
ysr@777	844	in_bytes(JavaThread::satb_mark_queue_offset() +
ysr@777	845	PtrQueue::byte_offset_of_index());
ysr@777	846	int satb_q_buf_byte_offset =
ysr@777	847	in_bytes(JavaThread::satb_mark_queue_offset() +
ysr@777	848	PtrQueue::byte_offset_of_buf());
ysr@777	849	__ bind(restart);
ysr@777	850	__ ld_ptr(G2_thread, satb_q_index_byte_offset, tmp);
ysr@777	851
ysr@777	852	__ br_on_reg_cond(Assembler::rc_z, /*annul*/false,
ysr@777	853	Assembler::pn, tmp, refill);
ysr@777	854
ysr@777	855	// If the branch is taken, no harm in executing this in the delay slot.
ysr@777	856	__ delayed()->ld_ptr(G2_thread, satb_q_buf_byte_offset, tmp2);
ysr@777	857	__ sub(tmp, oopSize, tmp);
ysr@777	858
ysr@777	859	__ st_ptr(pre_val, tmp2, tmp); // [_buf + index] := <address_of_card>
ysr@777	860	// Use return-from-leaf
ysr@777	861	__ retl();
ysr@777	862	__ delayed()->st_ptr(tmp, G2_thread, satb_q_index_byte_offset);
ysr@777	863
ysr@777	864	__ bind(refill);
ysr@777	865	__ save_frame(0);
ysr@777	866
ysr@777	867	__ mov(pre_val, L0);
ysr@777	868	__ mov(tmp, L1);
ysr@777	869	__ mov(tmp2, L2);
ysr@777	870
ysr@777	871	__ call_VM_leaf(L7_thread_cache,
ysr@777	872	CAST_FROM_FN_PTR(address,
ysr@777	873	SATBMarkQueueSet::handle_zero_index_for_thread),
ysr@777	874	G2_thread);
ysr@777	875
ysr@777	876	__ mov(L0, pre_val);
ysr@777	877	__ mov(L1, tmp);
ysr@777	878	__ mov(L2, tmp2);
ysr@777	879
ysr@777	880	__ br(Assembler::always, /*annul*/false, Assembler::pt, restart);
ysr@777	881	__ delayed()->restore();
ysr@777	882	}
ysr@777	883	break;
ysr@777	884
ysr@777	885	case g1_post_barrier_slow_id:
ysr@777	886	{
ysr@777	887	BarrierSet* bs = Universe::heap()->barrier_set();
ysr@777	888	if (bs->kind() != BarrierSet::G1SATBCTLogging) {
ysr@777	889	__ save_frame(0);
ysr@777	890	__ set((int)id, O1);
ysr@777	891	__ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0);
ysr@777	892	__ should_not_reach_here();
ysr@777	893	break;
ysr@777	894	}
ysr@777	895
ysr@777	896	__ set_info("g1_post_barrier_slow_id", dont_gc_arguments);
ysr@777	897
ysr@777	898	Register addr = G4;
ysr@777	899	Register cardtable = G5;
ysr@777	900	Register tmp = G1_scratch;
ysr@777	901	Register tmp2 = G3_scratch;
ysr@777	902	jbyte* byte_map_base = ((CardTableModRefBS*)bs)->byte_map_base;
ysr@777	903
ysr@777	904	Label not_already_dirty, restart, refill;
ysr@777	905
ysr@777	906	#ifdef _LP64
ysr@777	907	__ srlx(addr, CardTableModRefBS::card_shift, addr);
ysr@777	908	#else
ysr@777	909	__ srl(addr, CardTableModRefBS::card_shift, addr);
ysr@777	910	#endif
ysr@777	911
twisti@1162	912	AddressLiteral rs(byte_map_base);
twisti@1162	913	__ set(rs, cardtable); // cardtable := <card table base>
ysr@777	914	__ ldub(addr, cardtable, tmp); // tmp := [addr + cardtable]
ysr@777	915
ysr@777	916	__ br_on_reg_cond(Assembler::rc_nz, /*annul*/false, Assembler::pt,
ysr@777	917	tmp, not_already_dirty);
ysr@777	918	// Get cardtable + tmp into a reg by itself -- useful in the take-the-branch
ysr@777	919	// case, harmless if not.
ysr@777	920	__ delayed()->add(addr, cardtable, tmp2);
ysr@777	921
ysr@777	922	// We didn't take the branch, so we're already dirty: return.
ysr@777	923	// Use return-from-leaf
ysr@777	924	__ retl();
ysr@777	925	__ delayed()->nop();
ysr@777	926
ysr@777	927	// Not dirty.
ysr@777	928	__ bind(not_already_dirty);
ysr@777	929	// First, dirty it.
ysr@777	930	__ stb(G0, tmp2, 0); // [cardPtr] := 0 (i.e., dirty).
ysr@777	931
ysr@777	932	Register tmp3 = cardtable;
ysr@777	933	Register tmp4 = tmp;
ysr@777	934
ysr@777	935	// these registers are now dead
ysr@777	936	addr = cardtable = tmp = noreg;
ysr@777	937
ysr@777	938	int dirty_card_q_index_byte_offset =
ysr@777	939	in_bytes(JavaThread::dirty_card_queue_offset() +
ysr@777	940	PtrQueue::byte_offset_of_index());
ysr@777	941	int dirty_card_q_buf_byte_offset =
ysr@777	942	in_bytes(JavaThread::dirty_card_queue_offset() +
ysr@777	943	PtrQueue::byte_offset_of_buf());
ysr@777	944	__ bind(restart);
ysr@777	945	__ ld_ptr(G2_thread, dirty_card_q_index_byte_offset, tmp3);
ysr@777	946
ysr@777	947	__ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pn,
ysr@777	948	tmp3, refill);
ysr@777	949	// If the branch is taken, no harm in executing this in the delay slot.
ysr@777	950	__ delayed()->ld_ptr(G2_thread, dirty_card_q_buf_byte_offset, tmp4);
ysr@777	951	__ sub(tmp3, oopSize, tmp3);
ysr@777	952
ysr@777	953	__ st_ptr(tmp2, tmp4, tmp3); // [_buf + index] := <address_of_card>
ysr@777	954	// Use return-from-leaf
ysr@777	955	__ retl();
ysr@777	956	__ delayed()->st_ptr(tmp3, G2_thread, dirty_card_q_index_byte_offset);
ysr@777	957
ysr@777	958	__ bind(refill);
ysr@777	959	__ save_frame(0);
ysr@777	960
ysr@777	961	__ mov(tmp2, L0);
ysr@777	962	__ mov(tmp3, L1);
ysr@777	963	__ mov(tmp4, L2);
ysr@777	964
ysr@777	965	__ call_VM_leaf(L7_thread_cache,
ysr@777	966	CAST_FROM_FN_PTR(address,
ysr@777	967	DirtyCardQueueSet::handle_zero_index_for_thread),
ysr@777	968	G2_thread);
ysr@777	969
ysr@777	970	__ mov(L0, tmp2);
ysr@777	971	__ mov(L1, tmp3);
ysr@777	972	__ mov(L2, tmp4);
ysr@777	973
ysr@777	974	__ br(Assembler::always, /*annul*/false, Assembler::pt, restart);
ysr@777	975	__ delayed()->restore();
ysr@777	976	}
ysr@777	977	break;
ysr@777	978	#endif // !SERIALGC
ysr@777	979
duke@435	980	default:
duke@435	981	{ __ set_info("unimplemented entry", dont_gc_arguments);
duke@435	982	__ save_frame(0);
duke@435	983	__ set((int)id, O1);
duke@435	984	__ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), O1);
duke@435	985	__ should_not_reach_here();
duke@435	986	}
duke@435	987	break;
duke@435	988	}
duke@435	989	return oop_maps;
duke@435	990	}
duke@435	991
duke@435	992
duke@435	993	void Runtime1::generate_handle_exception(StubAssembler* sasm, OopMapSet* oop_maps, OopMap* oop_map, bool) {
duke@435	994	Label no_deopt;
duke@435	995
duke@435	996	__ verify_not_null_oop(Oexception);
duke@435	997
duke@435	998	// save the exception and issuing pc in the thread
duke@435	999	__ st_ptr(Oexception, G2_thread, in_bytes(JavaThread::exception_oop_offset()));
duke@435	1000	__ st_ptr(Oissuing_pc, G2_thread, in_bytes(JavaThread::exception_pc_offset()));
duke@435	1001
duke@435	1002	// save the real return address and use the throwing pc as the return address to lookup (has bci & oop map)
duke@435	1003	__ mov(I7, L0);
duke@435	1004	__ mov(Oissuing_pc, I7);
duke@435	1005	__ sub(I7, frame::pc_return_offset, I7);
duke@435	1006	int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc));
duke@435	1007
duke@435	1008	// Note: if nmethod has been deoptimized then regardless of
duke@435	1009	// whether it had a handler or not we will deoptimize
duke@435	1010	// by entering the deopt blob with a pending exception.
duke@435	1011
twisti@1730	1012	#ifdef ASSERT
twisti@1730	1013	Label done;
duke@435	1014	__ tst(O0);
twisti@1730	1015	__ br(Assembler::notZero, false, Assembler::pn, done);
duke@435	1016	__ delayed()->nop();
twisti@1730	1017	__ stop("should have found address");
twisti@1730	1018	__ bind(done);
twisti@1730	1019	#endif
duke@435	1020
duke@435	1021	// restore the registers that were saved at the beginning and jump to the exception handler.
duke@435	1022	restore_live_registers(sasm);
duke@435	1023
duke@435	1024	__ jmp(O0, 0);
duke@435	1025	__ delayed()->restore();
duke@435	1026
duke@435	1027	oop_maps->add_gc_map(call_offset, oop_map);
duke@435	1028	}
duke@435	1029
duke@435	1030
duke@435	1031	#undef __
duke@435	1032
duke@435	1033	#define __ masm->