| /* |
| * Copyright (c) 2004, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "asm/macroAssembler.inline.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "prims/jniFastGetField.hpp" |
| #include "prims/jvm_misc.hpp" |
| #include "runtime/safepoint.hpp" |
| |
| // TSO ensures that loads are blocking and ordered with respect to |
| // to earlier loads, so we don't need LoadLoad membars. |
| |
| #define __ masm-> |
| |
| #define BUFFER_SIZE 30*sizeof(jint) |
| |
| // Common register usage: |
| // O0: env |
| // O1: obj |
| // O2: jfieldID |
| // O4: offset (O2 >> 2) |
| // G4: old safepoint counter |
| |
| address JNI_FastGetField::generate_fast_get_int_field0(BasicType type) { |
| const char *name; |
| switch (type) { |
| case T_BOOLEAN: name = "jni_fast_GetBooleanField"; break; |
| case T_BYTE: name = "jni_fast_GetByteField"; break; |
| case T_CHAR: name = "jni_fast_GetCharField"; break; |
| case T_SHORT: name = "jni_fast_GetShortField"; break; |
| case T_INT: name = "jni_fast_GetIntField"; break; |
| default: ShouldNotReachHere(); |
| } |
| ResourceMark rm; |
| BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize); |
| CodeBuffer cbuf(blob); |
| MacroAssembler* masm = new MacroAssembler(&cbuf); |
| address fast_entry = __ pc(); |
| |
| Label label1, label2; |
| |
| AddressLiteral cnt_addrlit(SafepointSynchronize::safepoint_counter_addr()); |
| __ sethi (cnt_addrlit, O3); |
| Address cnt_addr(O3, cnt_addrlit.low10()); |
| __ ld (cnt_addr, G4); |
| __ andcc (G4, 1, G0); |
| __ br (Assembler::notZero, false, Assembler::pn, label1); |
| __ delayed()->srl (O2, 2, O4); |
| __ andn (O1, JNIHandles::weak_tag_mask, O1); |
| __ ld_ptr (O1, 0, O5); |
| |
| assert(count < LIST_CAPACITY, "LIST_CAPACITY too small"); |
| speculative_load_pclist[count] = __ pc(); |
| switch (type) { |
| case T_BOOLEAN: __ ldub (O5, O4, G3); break; |
| case T_BYTE: __ ldsb (O5, O4, G3); break; |
| case T_CHAR: __ lduh (O5, O4, G3); break; |
| case T_SHORT: __ ldsh (O5, O4, G3); break; |
| case T_INT: __ ld (O5, O4, G3); break; |
| default: ShouldNotReachHere(); |
| } |
| |
| __ ld (cnt_addr, O5); |
| __ cmp (O5, G4); |
| __ br (Assembler::notEqual, false, Assembler::pn, label2); |
| __ delayed()->mov (O7, G1); |
| __ retl (); |
| __ delayed()->mov (G3, O0); |
| |
| slowcase_entry_pclist[count++] = __ pc(); |
| __ bind (label1); |
| __ mov (O7, G1); |
| |
| address slow_case_addr; |
| switch (type) { |
| case T_BOOLEAN: slow_case_addr = jni_GetBooleanField_addr(); break; |
| case T_BYTE: slow_case_addr = jni_GetByteField_addr(); break; |
| case T_CHAR: slow_case_addr = jni_GetCharField_addr(); break; |
| case T_SHORT: slow_case_addr = jni_GetShortField_addr(); break; |
| case T_INT: slow_case_addr = jni_GetIntField_addr(); break; |
| default: ShouldNotReachHere(); |
| } |
| __ bind (label2); |
| __ call (slow_case_addr, relocInfo::none); |
| __ delayed()->mov (G1, O7); |
| |
| __ flush (); |
| |
| return fast_entry; |
| } |
| |
| address JNI_FastGetField::generate_fast_get_boolean_field() { |
| return generate_fast_get_int_field0(T_BOOLEAN); |
| } |
| |
| address JNI_FastGetField::generate_fast_get_byte_field() { |
| return generate_fast_get_int_field0(T_BYTE); |
| } |
| |
| address JNI_FastGetField::generate_fast_get_char_field() { |
| return generate_fast_get_int_field0(T_CHAR); |
| } |
| |
| address JNI_FastGetField::generate_fast_get_short_field() { |
| return generate_fast_get_int_field0(T_SHORT); |
| } |
| |
| address JNI_FastGetField::generate_fast_get_int_field() { |
| return generate_fast_get_int_field0(T_INT); |
| } |
| |
| address JNI_FastGetField::generate_fast_get_long_field() { |
| const char *name = "jni_fast_GetLongField"; |
| ResourceMark rm; |
| BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize); |
| CodeBuffer cbuf(blob); |
| MacroAssembler* masm = new MacroAssembler(&cbuf); |
| address fast_entry = __ pc(); |
| |
| Label label1, label2; |
| |
| AddressLiteral cnt_addrlit(SafepointSynchronize::safepoint_counter_addr()); |
| __ sethi (cnt_addrlit, G3); |
| Address cnt_addr(G3, cnt_addrlit.low10()); |
| __ ld (cnt_addr, G4); |
| __ andcc (G4, 1, G0); |
| __ br (Assembler::notZero, false, Assembler::pn, label1); |
| __ delayed()->srl (O2, 2, O4); |
| __ andn (O1, JNIHandles::weak_tag_mask, O1); |
| __ ld_ptr (O1, 0, O5); |
| __ add (O5, O4, O5); |
| |
| #ifndef _LP64 |
| assert(count < LIST_CAPACITY-1, "LIST_CAPACITY too small"); |
| speculative_load_pclist[count++] = __ pc(); |
| __ ld (O5, 0, G2); |
| |
| speculative_load_pclist[count] = __ pc(); |
| __ ld (O5, 4, O3); |
| #else |
| assert(count < LIST_CAPACITY, "LIST_CAPACITY too small"); |
| speculative_load_pclist[count] = __ pc(); |
| __ ldx (O5, 0, O3); |
| #endif |
| |
| __ ld (cnt_addr, G1); |
| __ cmp (G1, G4); |
| __ br (Assembler::notEqual, false, Assembler::pn, label2); |
| __ delayed()->mov (O7, G1); |
| |
| #ifndef _LP64 |
| __ mov (G2, O0); |
| __ retl (); |
| __ delayed()->mov (O3, O1); |
| #else |
| __ retl (); |
| __ delayed()->mov (O3, O0); |
| #endif |
| |
| #ifndef _LP64 |
| slowcase_entry_pclist[count-1] = __ pc(); |
| slowcase_entry_pclist[count++] = __ pc() ; |
| #else |
| slowcase_entry_pclist[count++] = __ pc(); |
| #endif |
| |
| __ bind (label1); |
| __ mov (O7, G1); |
| |
| address slow_case_addr = jni_GetLongField_addr(); |
| __ bind (label2); |
| __ call (slow_case_addr, relocInfo::none); |
| __ delayed()->mov (G1, O7); |
| |
| __ flush (); |
| |
| return fast_entry; |
| } |
| |
| address JNI_FastGetField::generate_fast_get_float_field0(BasicType type) { |
| const char *name; |
| switch (type) { |
| case T_FLOAT: name = "jni_fast_GetFloatField"; break; |
| case T_DOUBLE: name = "jni_fast_GetDoubleField"; break; |
| default: ShouldNotReachHere(); |
| } |
| ResourceMark rm; |
| BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize); |
| CodeBuffer cbuf(blob); |
| MacroAssembler* masm = new MacroAssembler(&cbuf); |
| address fast_entry = __ pc(); |
| |
| Label label1, label2; |
| |
| AddressLiteral cnt_addrlit(SafepointSynchronize::safepoint_counter_addr()); |
| __ sethi (cnt_addrlit, O3); |
| Address cnt_addr(O3, cnt_addrlit.low10()); |
| __ ld (cnt_addr, G4); |
| __ andcc (G4, 1, G0); |
| __ br (Assembler::notZero, false, Assembler::pn, label1); |
| __ delayed()->srl (O2, 2, O4); |
| __ andn (O1, JNIHandles::weak_tag_mask, O1); |
| __ ld_ptr (O1, 0, O5); |
| |
| assert(count < LIST_CAPACITY, "LIST_CAPACITY too small"); |
| speculative_load_pclist[count] = __ pc(); |
| switch (type) { |
| case T_FLOAT: __ ldf (FloatRegisterImpl::S, O5, O4, F0); break; |
| case T_DOUBLE: __ ldf (FloatRegisterImpl::D, O5, O4, F0); break; |
| default: ShouldNotReachHere(); |
| } |
| |
| __ ld (cnt_addr, O5); |
| __ cmp (O5, G4); |
| __ br (Assembler::notEqual, false, Assembler::pn, label2); |
| __ delayed()->mov (O7, G1); |
| |
| __ retl (); |
| __ delayed()-> nop (); |
| |
| slowcase_entry_pclist[count++] = __ pc(); |
| __ bind (label1); |
| __ mov (O7, G1); |
| |
| address slow_case_addr; |
| switch (type) { |
| case T_FLOAT: slow_case_addr = jni_GetFloatField_addr(); break; |
| case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); break; |
| default: ShouldNotReachHere(); |
| } |
| __ bind (label2); |
| __ call (slow_case_addr, relocInfo::none); |
| __ delayed()->mov (G1, O7); |
| |
| __ flush (); |
| |
| return fast_entry; |
| } |
| |
| address JNI_FastGetField::generate_fast_get_float_field() { |
| return generate_fast_get_float_field0(T_FLOAT); |
| } |
| |
| address JNI_FastGetField::generate_fast_get_double_field() { |
| return generate_fast_get_float_field0(T_DOUBLE); |
| } |