aoqi@1: /*
aoqi@1:  * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@1:  * Copyright (c) 2015, 2016, Loongson Technology. All rights reserved.
aoqi@1:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@1:  *
aoqi@1:  * This code is free software; you can redistribute it and/or modify it
aoqi@1:  * under the terms of the GNU General Public License version 2 only, as
aoqi@1:  * published by the Free Software Foundation.
aoqi@1:  *
aoqi@1:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@1:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@1:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@1:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@1:  * accompanied this code).
aoqi@1:  *
aoqi@1:  * You should have received a copy of the GNU General Public License version
aoqi@1:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@1:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@1:  *
aoqi@1:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@1:  * or visit www.oracle.com if you need additional information or have any
aoqi@1:  * questions.
aoqi@1:  *
aoqi@1:  */
aoqi@1: 
aoqi@1: #include "precompiled.hpp"
aoqi@1: #include "asm/macroAssembler.hpp"
aoqi@1: #include "memory/resourceArea.hpp"
aoqi@1: #include "prims/jniFastGetField.hpp"
aoqi@1: #include "prims/jvm_misc.hpp"
aoqi@1: #include "runtime/safepoint.hpp"
aoqi@1: 
aoqi@1: #define __ masm->
aoqi@1: 
aoqi@1: #define BUFFER_SIZE 30*wordSize
aoqi@1: 
aoqi@1: // Instead of issuing lfence for LoadLoad barrier, we create data dependency
aoqi@1: // between loads, which is more efficient than lfence.
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_int_field0(BasicType type) {
aoqi@1:   const char *name;
aoqi@1:   switch (type) {
aoqi@1:     case T_BOOLEAN: name = "jni_fast_GetBooleanField"; break;
aoqi@1:     case T_BYTE:    name = "jni_fast_GetByteField";    break;
aoqi@1:     case T_CHAR:    name = "jni_fast_GetCharField";    break;
aoqi@1:     case T_SHORT:   name = "jni_fast_GetShortField";   break;
aoqi@1:     case T_INT:     name = "jni_fast_GetIntField";     break;
aoqi@1:     case T_LONG:    name = "jni_fast_GetLongField";    break;
aoqi@1:     default:        ShouldNotReachHere();
aoqi@1:   }
aoqi@1:   ResourceMark rm;
aoqi@1:   BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE);
aoqi@1:     CodeBuffer cbuf(blob);
aoqi@1:   MacroAssembler* masm = new MacroAssembler(&cbuf);
aoqi@1:   address fast_entry = __ pc();
aoqi@1: 
aoqi@1:   Label slow;
aoqi@1: 
aoqi@1:   //  return pc        RA
aoqi@1:   //  jni env          A0
aoqi@1:   //  obj              A1
aoqi@1:   //  jfieldID         A2
aoqi@1: 
aoqi@1:   address counter_addr = SafepointSynchronize::safepoint_counter_addr();
aoqi@1:   __ li48(AT, (long)counter_addr);
aoqi@1:   __ lw(T1, AT, 0);
aoqi@1: 
aoqi@1:   /* 2012/4/28 Jin: the parameters(A0~A3) should not be modified, since
aoqi@1:    *   they will be used in slow path. */
aoqi@1:   __ andi(AT, T1, 1);
aoqi@1:   __ bne(AT, R0, slow);
aoqi@1:   __ delayed()->nop();
aoqi@1: 
aoqi@1:   __ ld(T0, A1, 0);              // unbox, *obj 
aoqi@1:   __ move(T2, A2);
aoqi@1:   __ shr(T2, 2);                 // offset
aoqi@1:   __ dadd(T0, T0, T2);
aoqi@1: 
aoqi@1:   assert(count < LIST_CAPACITY, "LIST_CAPACITY too small");
aoqi@1:   speculative_load_pclist[count] = __ pc();
aoqi@1:   switch (type) {
aoqi@1:     case T_BOOLEAN: __ lbu (V0, T0, 0); break;
aoqi@1:     case T_BYTE:    __ lb  (V0, T0, 0); break;
aoqi@1:     case T_CHAR:    __ lhu (V0, T0, 0); break;
aoqi@1:     case T_SHORT:   __ lh  (V0, T0, 0); break;
aoqi@1:     case T_INT:     __ lw  (V0, T0, 0); break;
aoqi@1:     case T_LONG:    __ ld  (V0, T0, 0); break;
aoqi@1:     default:        ShouldNotReachHere();
aoqi@1:   }
aoqi@1: 
aoqi@1:   __ li48(AT, (long)counter_addr);
aoqi@1:   __ lw(AT, AT, 0);
aoqi@1:   __ bne(T1, AT, slow);
aoqi@1:   __ delayed()->nop();
aoqi@1: 
aoqi@1:   __ jr(RA);
aoqi@1:   __ delayed()->nop();
aoqi@1: 
aoqi@1:   slowcase_entry_pclist[count++] = __ pc();
aoqi@1:   __ bind (slow);
aoqi@1:   address slow_case_addr;
aoqi@1:   switch (type) {
aoqi@1:     case T_BOOLEAN: slow_case_addr = jni_GetBooleanField_addr(); break;
aoqi@1:     case T_BYTE:    slow_case_addr = jni_GetByteField_addr();    break;
aoqi@1:     case T_CHAR:    slow_case_addr = jni_GetCharField_addr();    break;
aoqi@1:     case T_SHORT:   slow_case_addr = jni_GetShortField_addr();   break;
aoqi@1:     case T_INT:     slow_case_addr = jni_GetIntField_addr();     break;
aoqi@1:     case T_LONG:    slow_case_addr = jni_GetLongField_addr();
aoqi@1:   }
aoqi@1:   __ jmp(slow_case_addr);
aoqi@1:   __ delayed()->nop();
aoqi@1: 
aoqi@1:   __ flush ();
aoqi@1: 
aoqi@1:   return fast_entry;
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_boolean_field() {
aoqi@1:   return generate_fast_get_int_field0(T_BOOLEAN);
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_byte_field() {
aoqi@1:   return generate_fast_get_int_field0(T_BYTE);
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_char_field() {
aoqi@1:   return generate_fast_get_int_field0(T_CHAR);
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_short_field() {
aoqi@1:   return generate_fast_get_int_field0(T_SHORT);
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_int_field() {
aoqi@1:   return generate_fast_get_int_field0(T_INT);
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_long_field() {
aoqi@1:   return generate_fast_get_int_field0(T_LONG);
aoqi@1: /*
aoqi@1:   const char *name = "jni_fast_GetLongField";
aoqi@1:   ResourceMark rm;
aoqi@1:   BufferBlob* b = BufferBlob::create(name, BUFFER_SIZE*wordSize);
aoqi@1:   address fast_entry = b->instructions_begin();
aoqi@1:   // CodeBuffer* cbuf = new CodeBuffer(fast_entry, b->instructions_size());
aoqi@1:   CodeBuffer  cbuf (fast_entry, b->instructions_size());
aoqi@1:   MacroAssembler* masm = new MacroAssembler(&cbuf);
aoqi@1: 
aoqi@1:   Label slow;
aoqi@1: 
aoqi@1:   //  return pc        RA
aoqi@1:   //  jni env          A0
aoqi@1:   //  obj              A1
aoqi@1:   //  jfieldID         A2
aoqi@1: 
aoqi@1:   address counter_addr = SafepointSynchronize::safepoint_counter_addr();
aoqi@1:   //__ move(AT, (int)counter_addr);
aoqi@1:   //__ lw(T1, AT, 0);
aoqi@1:   __ lui(AT, Assembler::split_high((intptr_t)counter_addr));
aoqi@1:   __ lw(T1, AT, Assembler::split_low((intptr_t)counter_addr));
aoqi@1:   __ andi(AT, T1, 1);	
aoqi@1:   __ bne(AT, R0, slow);
aoqi@1:   __ delayed()->nop();
aoqi@1: 
aoqi@1:   __ ld (A1, A1, 0);              // unbox, *obj
aoqi@1:   __ shr(A2, 2);              		// offset
aoqi@1:   __ dadd(A1, A1, A2);
aoqi@1: 
aoqi@1:   assert(count < LIST_CAPACITY-1, "LIST_CAPACITY too small");
aoqi@1:   speculative_load_pclist[count++] = __ pc();
aoqi@1:   __ ld(V0, A1, 0);							// eax
aoqi@1:   speculative_load_pclist[count] = __ pc();
aoqi@1:   __ ld(V1, A1, 8);
aoqi@1: 
aoqi@1:   __ lui(AT, Assembler::split_high((intptr_t)counter_addr));
aoqi@1:   __ lw(AT, AT, Assembler::split_low((intptr_t)counter_addr));
aoqi@1:   __ bne(T1, AT, slow);
aoqi@1:   __ delayed()->nop();
aoqi@1: 
aoqi@1:   __ jr(RA);
aoqi@1:   __ delayed()->nop();
aoqi@1: 
aoqi@1:   slowcase_entry_pclist[count-1] = __ pc();
aoqi@1:   slowcase_entry_pclist[count++] = __ pc();
aoqi@1:   __ bind (slow);
aoqi@1:   address slow_case_addr = jni_GetLongField_addr();;
aoqi@1:   // tail call
aoqi@1:   __ jmp(slow_case_addr);
aoqi@1:   __ delayed()->nop();
aoqi@1: 
aoqi@1:   __ flush();
aoqi@1:   return fast_entry;
aoqi@1:   */
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_float_field0(BasicType type) {
aoqi@1:   const char *name;
aoqi@1:   switch (type) {
aoqi@1:     case T_FLOAT:     name = "jni_fast_GetFloatField";     break;
aoqi@1:     case T_DOUBLE:    name = "jni_fast_GetDoubleField";    break;
aoqi@1:     default:          ShouldNotReachHere();
aoqi@1:   }
aoqi@1:   ResourceMark rm;
aoqi@1:   BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE);
aoqi@1:     CodeBuffer cbuf(blob);
aoqi@1:   MacroAssembler* masm = new MacroAssembler(&cbuf);
aoqi@1: address fast_entry = __ pc();
aoqi@1: 
aoqi@1:   Label slow;
aoqi@1: 
aoqi@1: 	//  return pc        RA
aoqi@1: 	//  jni env          A0
aoqi@1: 	//  obj              A1
aoqi@1: 	//  jfieldID         A2
aoqi@1: 
aoqi@1: 	address counter_addr = SafepointSynchronize::safepoint_counter_addr();
aoqi@1: 	//__ move(AT, (int)counter_addr);
aoqi@1: 	//__ lw(T1, AT, 0);
aoqi@1: #ifdef _LP64
aoqi@1: 	__ li48(AT, (intptr_t)counter_addr);
aoqi@1: 	__ lw(T1, AT, 0);
aoqi@1: #else
aoqi@1: 	__ lui(AT, Assembler::split_high((intptr_t)counter_addr));
aoqi@1: 	__ lw(T1, AT, Assembler::split_low((intptr_t)counter_addr));
aoqi@1: #endif
aoqi@1: 	__ andi(AT, T1, 1);
aoqi@1: 	__ bne(AT, R0, slow);
aoqi@1: 	__ delayed()->nop();	
aoqi@1: 
aoqi@1: #ifdef _LP64
aoqi@1: 	__ ld(A1, A1, 0);              // unbox, *obj
aoqi@1: #else
aoqi@1: 	__ lw(A1, A1, 0);              // unbox, *obj
aoqi@1: #endif
aoqi@1: 	__ shr(A2, 2);             		 // offset
aoqi@1: 	__ add(A1, A1, A2);
aoqi@1: 
aoqi@1: 	assert(count < LIST_CAPACITY, "LIST_CAPACITY too small");
aoqi@1: 	speculative_load_pclist[count] = __ pc();
aoqi@1: 	switch (type) {
aoqi@1: 		case T_FLOAT:  
aoqi@1: 			__ lwc1(F0, A1, 0);
aoqi@1: 			break;
aoqi@1: 		case T_DOUBLE: 
aoqi@1: #ifdef _LP64
aoqi@1: 			__ ldc1(F0, A1, 0);
aoqi@1: #else
aoqi@1: 			__ lwc1(F0, A1, 0);
aoqi@1: 			__ lwc1(F1, A1, 4);
aoqi@1: #endif
aoqi@1: 			break;
aoqi@1: 		default:       ShouldNotReachHere();
aoqi@1: 	}
aoqi@1: 
aoqi@1: #ifdef _LP64
aoqi@1: 	__ li48(AT, (intptr_t)counter_addr);
aoqi@1: 	__ lw(AT, AT, 0);
aoqi@1: #else
aoqi@1: 	__ lui(AT, Assembler::split_high((intptr_t)counter_addr));
aoqi@1: 	__ lw(AT, AT, Assembler::split_low((intptr_t)counter_addr));
aoqi@1: #endif
aoqi@1: 	__ bne(T1, AT, slow);
aoqi@1: 	__ delayed()->nop();
aoqi@1: 
aoqi@1: 	__ jr(RA);
aoqi@1: 	__ delayed()->nop();
aoqi@1: 
aoqi@1: 
aoqi@1: 	slowcase_entry_pclist[count++] = __ pc();
aoqi@1: 	__ bind (slow);
aoqi@1: 	address slow_case_addr;
aoqi@1: 	switch (type) {
aoqi@1: 		case T_FLOAT:  slow_case_addr = jni_GetFloatField_addr();  break;
aoqi@1: 		case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); break;
aoqi@1: 		default:       ShouldNotReachHere();
aoqi@1: 	}
aoqi@1: 	__ jmp(slow_case_addr);
aoqi@1: 	__ delayed()->nop();
aoqi@1: 
aoqi@1: 	__ flush ();
aoqi@1: 	return fast_entry;
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_float_field() {
aoqi@1:   return generate_fast_get_float_field0(T_FLOAT);
aoqi@1: }
aoqi@1: 
aoqi@1: address JNI_FastGetField::generate_fast_get_double_field() {
aoqi@1:   return generate_fast_get_float_field0(T_DOUBLE);
aoqi@1: }