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src/cpu/sparc/vm/jniFastGetField_sparc.cpp@32bc598624bd (annotated)

src/cpu/sparc/vm/jniFastGetField_sparc.cpp

Tue, 07 May 2019 20:38:26 +0000

author

phh

date

Tue, 07 May 2019 20:38:26 +0000

changeset 9669

32bc598624bd

parent 4323

f0c2369fda5a

child 9703

2fdf635bcf28

permissions

-rw-r--r--

8176100: [REDO][REDO] G1 Needs pre barrier on dereference of weak JNI handles
Summary: Add tag bit to all JNI weak handles
Reviewed-by: kbarrett, coleenp, tschatzl

duke@435	1	/*
phh@9669	2	* Copyright (c) 2004, 2017, Oracle and/or its affiliates. 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	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
twisti@4323	26	#include "asm/macroAssembler.inline.hpp"
stefank@2314	27	#include "memory/resourceArea.hpp"
stefank@2314	28	#include "prims/jniFastGetField.hpp"
stefank@2314	29	#include "prims/jvm_misc.hpp"
stefank@2314	30	#include "runtime/safepoint.hpp"
duke@435	31
duke@435	32	// TSO ensures that loads are blocking and ordered with respect to
duke@435	33	// to earlier loads, so we don't need LoadLoad membars.
duke@435	34
duke@435	35	#define __ masm->
duke@435	36
duke@435	37	#define BUFFER_SIZE 30*sizeof(jint)
duke@435	38
duke@435	39	// Common register usage:
duke@435	40	// O0: env
duke@435	41	// O1: obj
duke@435	42	// O2: jfieldID
duke@435	43	// O4: offset (O2 >> 2)
duke@435	44	// G4: old safepoint counter
duke@435	45
duke@435	46	address JNI_FastGetField::generate_fast_get_int_field0(BasicType type) {
duke@435	47	const char *name;
duke@435	48	switch (type) {
duke@435	49	case T_BOOLEAN: name = "jni_fast_GetBooleanField"; break;
duke@435	50	case T_BYTE: name = "jni_fast_GetByteField"; break;
duke@435	51	case T_CHAR: name = "jni_fast_GetCharField"; break;
duke@435	52	case T_SHORT: name = "jni_fast_GetShortField"; break;
duke@435	53	case T_INT: name = "jni_fast_GetIntField"; break;
duke@435	54	default: ShouldNotReachHere();
duke@435	55	}
duke@435	56	ResourceMark rm;
twisti@2103	57	BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize);
twisti@2103	58	CodeBuffer cbuf(blob);
duke@435	59	MacroAssembler* masm = new MacroAssembler(&cbuf);
twisti@2103	60	address fast_entry = __ pc();
duke@435	61
duke@435	62	Label label1, label2;
duke@435	63
twisti@1162	64	AddressLiteral cnt_addrlit(SafepointSynchronize::safepoint_counter_addr());
twisti@1162	65	__ sethi (cnt_addrlit, O3);
twisti@1162	66	Address cnt_addr(O3, cnt_addrlit.low10());
twisti@1162	67	__ ld (cnt_addr, G4);
duke@435	68	__ andcc (G4, 1, G0);
duke@435	69	__ br (Assembler::notZero, false, Assembler::pn, label1);
duke@435	70	__ delayed()->srl (O2, 2, O4);
phh@9669	71	__ andn (O1, JNIHandles::weak_tag_mask, O1);
duke@435	72	__ ld_ptr (O1, 0, O5);
duke@435	73
duke@435	74	assert(count < LIST_CAPACITY, "LIST_CAPACITY too small");
duke@435	75	speculative_load_pclist[count] = __ pc();
duke@435	76	switch (type) {
duke@435	77	case T_BOOLEAN: __ ldub (O5, O4, G3); break;
duke@435	78	case T_BYTE: __ ldsb (O5, O4, G3); break;
duke@435	79	case T_CHAR: __ lduh (O5, O4, G3); break;
duke@435	80	case T_SHORT: __ ldsh (O5, O4, G3); break;
duke@435	81	case T_INT: __ ld (O5, O4, G3); break;
duke@435	82	default: ShouldNotReachHere();
duke@435	83	}
duke@435	84
twisti@1162	85	__ ld (cnt_addr, O5);
duke@435	86	__ cmp (O5, G4);
duke@435	87	__ br (Assembler::notEqual, false, Assembler::pn, label2);
duke@435	88	__ delayed()->mov (O7, G1);
duke@435	89	__ retl ();
duke@435	90	__ delayed()->mov (G3, O0);
duke@435	91
duke@435	92	slowcase_entry_pclist[count++] = __ pc();
duke@435	93	__ bind (label1);
duke@435	94	__ mov (O7, G1);
duke@435	95
duke@435	96	address slow_case_addr;
duke@435	97	switch (type) {
duke@435	98	case T_BOOLEAN: slow_case_addr = jni_GetBooleanField_addr(); break;
duke@435	99	case T_BYTE: slow_case_addr = jni_GetByteField_addr(); break;
duke@435	100	case T_CHAR: slow_case_addr = jni_GetCharField_addr(); break;
duke@435	101	case T_SHORT: slow_case_addr = jni_GetShortField_addr(); break;
duke@435	102	case T_INT: slow_case_addr = jni_GetIntField_addr(); break;
duke@435	103	default: ShouldNotReachHere();
duke@435	104	}
duke@435	105	__ bind (label2);
duke@435	106	__ call (slow_case_addr, relocInfo::none);
duke@435	107	__ delayed()->mov (G1, O7);
duke@435	108
duke@435	109	__ flush ();
duke@435	110
duke@435	111	return fast_entry;
duke@435	112	}
duke@435	113
duke@435	114	address JNI_FastGetField::generate_fast_get_boolean_field() {
duke@435	115	return generate_fast_get_int_field0(T_BOOLEAN);
duke@435	116	}
duke@435	117
duke@435	118	address JNI_FastGetField::generate_fast_get_byte_field() {
duke@435	119	return generate_fast_get_int_field0(T_BYTE);
duke@435	120	}
duke@435	121
duke@435	122	address JNI_FastGetField::generate_fast_get_char_field() {
duke@435	123	return generate_fast_get_int_field0(T_CHAR);
duke@435	124	}
duke@435	125
duke@435	126	address JNI_FastGetField::generate_fast_get_short_field() {
duke@435	127	return generate_fast_get_int_field0(T_SHORT);
duke@435	128	}
duke@435	129
duke@435	130	address JNI_FastGetField::generate_fast_get_int_field() {
duke@435	131	return generate_fast_get_int_field0(T_INT);
duke@435	132	}
duke@435	133
duke@435	134	address JNI_FastGetField::generate_fast_get_long_field() {
duke@435	135	const char *name = "jni_fast_GetLongField";
duke@435	136	ResourceMark rm;
twisti@2103	137	BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize);
twisti@2103	138	CodeBuffer cbuf(blob);
duke@435	139	MacroAssembler* masm = new MacroAssembler(&cbuf);
twisti@2103	140	address fast_entry = __ pc();
duke@435	141
duke@435	142	Label label1, label2;
duke@435	143
twisti@1162	144	AddressLiteral cnt_addrlit(SafepointSynchronize::safepoint_counter_addr());
twisti@1162	145	__ sethi (cnt_addrlit, G3);
twisti@1162	146	Address cnt_addr(G3, cnt_addrlit.low10());
twisti@1162	147	__ ld (cnt_addr, G4);
duke@435	148	__ andcc (G4, 1, G0);
duke@435	149	__ br (Assembler::notZero, false, Assembler::pn, label1);
duke@435	150	__ delayed()->srl (O2, 2, O4);
phh@9669	151	__ andn (O1, JNIHandles::weak_tag_mask, O1);
duke@435	152	__ ld_ptr (O1, 0, O5);
duke@435	153	__ add (O5, O4, O5);
duke@435	154
duke@435	155	#ifndef _LP64
duke@435	156	assert(count < LIST_CAPACITY-1, "LIST_CAPACITY too small");
duke@435	157	speculative_load_pclist[count++] = __ pc();
duke@435	158	__ ld (O5, 0, G2);
duke@435	159
duke@435	160	speculative_load_pclist[count] = __ pc();
duke@435	161	__ ld (O5, 4, O3);
duke@435	162	#else
duke@435	163	assert(count < LIST_CAPACITY, "LIST_CAPACITY too small");
duke@435	164	speculative_load_pclist[count] = __ pc();
duke@435	165	__ ldx (O5, 0, O3);
duke@435	166	#endif
duke@435	167
twisti@1162	168	__ ld (cnt_addr, G1);
duke@435	169	__ cmp (G1, G4);
duke@435	170	__ br (Assembler::notEqual, false, Assembler::pn, label2);
duke@435	171	__ delayed()->mov (O7, G1);
duke@435	172
duke@435	173	#ifndef _LP64
duke@435	174	__ mov (G2, O0);
duke@435	175	__ retl ();
duke@435	176	__ delayed()->mov (O3, O1);
duke@435	177	#else
duke@435	178	__ retl ();
duke@435	179	__ delayed()->mov (O3, O0);
duke@435	180	#endif
duke@435	181
duke@435	182	#ifndef _LP64
duke@435	183	slowcase_entry_pclist[count-1] = __ pc();
duke@435	184	slowcase_entry_pclist[count++] = __ pc() ;
duke@435	185	#else
duke@435	186	slowcase_entry_pclist[count++] = __ pc();
duke@435	187	#endif
duke@435	188
duke@435	189	__ bind (label1);
duke@435	190	__ mov (O7, G1);
duke@435	191
duke@435	192	address slow_case_addr = jni_GetLongField_addr();
duke@435	193	__ bind (label2);
duke@435	194	__ call (slow_case_addr, relocInfo::none);
duke@435	195	__ delayed()->mov (G1, O7);
duke@435	196
duke@435	197	__ flush ();
duke@435	198
duke@435	199	return fast_entry;
duke@435	200	}
duke@435	201
duke@435	202	address JNI_FastGetField::generate_fast_get_float_field0(BasicType type) {
duke@435	203	const char *name;
duke@435	204	switch (type) {
duke@435	205	case T_FLOAT: name = "jni_fast_GetFloatField"; break;
duke@435	206	case T_DOUBLE: name = "jni_fast_GetDoubleField"; break;
duke@435	207	default: ShouldNotReachHere();
duke@435	208	}
duke@435	209	ResourceMark rm;
twisti@2103	210	BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize);
twisti@2103	211	CodeBuffer cbuf(blob);
duke@435	212	MacroAssembler* masm = new MacroAssembler(&cbuf);
twisti@2103	213	address fast_entry = __ pc();
duke@435	214
duke@435	215	Label label1, label2;
duke@435	216
twisti@1162	217	AddressLiteral cnt_addrlit(SafepointSynchronize::safepoint_counter_addr());
twisti@1162	218	__ sethi (cnt_addrlit, O3);
twisti@1162	219	Address cnt_addr(O3, cnt_addrlit.low10());
twisti@1162	220	__ ld (cnt_addr, G4);
duke@435	221	__ andcc (G4, 1, G0);
duke@435	222	__ br (Assembler::notZero, false, Assembler::pn, label1);
duke@435	223	__ delayed()->srl (O2, 2, O4);
phh@9669	224	__ andn (O1, JNIHandles::weak_tag_mask, O1);
duke@435	225	__ ld_ptr (O1, 0, O5);
duke@435	226
duke@435	227	assert(count < LIST_CAPACITY, "LIST_CAPACITY too small");
duke@435	228	speculative_load_pclist[count] = __ pc();
duke@435	229	switch (type) {
duke@435	230	case T_FLOAT: __ ldf (FloatRegisterImpl::S, O5, O4, F0); break;
duke@435	231	case T_DOUBLE: __ ldf (FloatRegisterImpl::D, O5, O4, F0); break;
duke@435	232	default: ShouldNotReachHere();
duke@435	233	}
duke@435	234
twisti@1162	235	__ ld (cnt_addr, O5);
duke@435	236	__ cmp (O5, G4);
duke@435	237	__ br (Assembler::notEqual, false, Assembler::pn, label2);
duke@435	238	__ delayed()->mov (O7, G1);
duke@435	239
duke@435	240	__ retl ();
duke@435	241	__ delayed()-> nop ();
duke@435	242
duke@435	243	slowcase_entry_pclist[count++] = __ pc();
duke@435	244	__ bind (label1);
duke@435	245	__ mov (O7, G1);
duke@435	246
duke@435	247	address slow_case_addr;
duke@435	248	switch (type) {
duke@435	249	case T_FLOAT: slow_case_addr = jni_GetFloatField_addr(); break;
duke@435	250	case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); break;
duke@435	251	default: ShouldNotReachHere();
duke@435	252	}
duke@435	253	__ bind (label2);
duke@435	254	__ call (slow_case_addr, relocInfo::none);
duke@435	255	__ delayed()->mov (G1, O7);
duke@435	256
duke@435	257	__ flush ();
duke@435	258
duke@435	259	return fast_entry;
duke@435	260	}
duke@435	261
duke@435	262	address JNI_FastGetField::generate_fast_get_float_field() {
duke@435	263	return generate_fast_get_float_field0(T_FLOAT);
duke@435	264	}
duke@435	265
duke@435	266	address JNI_FastGetField::generate_fast_get_double_field() {
duke@435	267	return generate_fast_get_float_field0(T_DOUBLE);
duke@435	268	}