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templateTable_ppc_64.cpp
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templateTable_ppc_64.cpp
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/*
* Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013, 2017 SAP SE. 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 "gc/shared/barrierSetAssembler.hpp"
#include "interpreter/interpreter.hpp"
#include "interpreter/interpreterRuntime.hpp"
#include "interpreter/interp_masm.hpp"
#include "interpreter/templateInterpreter.hpp"
#include "interpreter/templateTable.hpp"
#include "memory/universe.hpp"
#include "oops/klass.inline.hpp"
#include "oops/objArrayKlass.hpp"
#include "oops/oop.inline.hpp"
#include "prims/methodHandles.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/safepointMechanism.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
#include "runtime/synchronizer.hpp"
#include "utilities/macros.hpp"
#include "utilities/powerOfTwo.hpp"
#undef __
#define __ _masm->
// ============================================================================
// Misc helpers
// Do an oop store like *(base + index) = val OR *(base + offset) = val
// (only one of both variants is possible at the same time).
// Index can be noreg.
// Kills:
// Rbase, Rtmp
static void do_oop_store(InterpreterMacroAssembler* _masm,
Register base,
RegisterOrConstant offset,
Register val, // Noreg means always null.
Register tmp1,
Register tmp2,
Register tmp3,
DecoratorSet decorators) {
assert_different_registers(tmp1, tmp2, tmp3, val, base);
__ store_heap_oop(val, offset, base, tmp1, tmp2, tmp3, false, decorators);
}
static void do_oop_load(InterpreterMacroAssembler* _masm,
Register base,
RegisterOrConstant offset,
Register dst,
Register tmp1,
Register tmp2,
DecoratorSet decorators) {
assert_different_registers(base, tmp1, tmp2);
assert_different_registers(dst, tmp1, tmp2);
__ load_heap_oop(dst, offset, base, tmp1, tmp2, false, decorators);
}
// ============================================================================
// Platform-dependent initialization
void TemplateTable::pd_initialize() {
// No ppc64 specific initialization.
}
Address TemplateTable::at_bcp(int offset) {
// Not used on ppc.
ShouldNotReachHere();
return Address();
}
// Patches the current bytecode (ptr to it located in bcp)
// in the bytecode stream with a new one.
void TemplateTable::patch_bytecode(Bytecodes::Code new_bc, Register Rnew_bc, Register Rtemp, bool load_bc_into_bc_reg /*=true*/, int byte_no) {
// With sharing on, may need to test method flag.
if (!RewriteBytecodes) return;
Label L_patch_done;
switch (new_bc) {
case Bytecodes::_fast_aputfield:
case Bytecodes::_fast_bputfield:
case Bytecodes::_fast_zputfield:
case Bytecodes::_fast_cputfield:
case Bytecodes::_fast_dputfield:
case Bytecodes::_fast_fputfield:
case Bytecodes::_fast_iputfield:
case Bytecodes::_fast_lputfield:
case Bytecodes::_fast_sputfield:
{
// We skip bytecode quickening for putfield instructions when
// the put_code written to the constant pool cache is zero.
// This is required so that every execution of this instruction
// calls out to InterpreterRuntime::resolve_get_put to do
// additional, required work.
assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
assert(load_bc_into_bc_reg, "we use bc_reg as temp");
__ get_cache_and_index_at_bcp(Rtemp /* dst = cache */, 1);
// ((*(cache+indices))>>((1+byte_no)*8))&0xFF:
#if defined(VM_LITTLE_ENDIAN)
__ lbz(Rnew_bc, in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset()) + 1 + byte_no, Rtemp);
#else
__ lbz(Rnew_bc, in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset()) + 7 - (1 + byte_no), Rtemp);
#endif
__ cmpwi(CCR0, Rnew_bc, 0);
__ li(Rnew_bc, (unsigned int)(unsigned char)new_bc);
__ beq(CCR0, L_patch_done);
// __ isync(); // acquire not needed
break;
}
default:
assert(byte_no == -1, "sanity");
if (load_bc_into_bc_reg) {
__ li(Rnew_bc, (unsigned int)(unsigned char)new_bc);
}
}
if (JvmtiExport::can_post_breakpoint()) {
Label L_fast_patch;
__ lbz(Rtemp, 0, R14_bcp);
__ cmpwi(CCR0, Rtemp, (unsigned int)(unsigned char)Bytecodes::_breakpoint);
__ bne(CCR0, L_fast_patch);
// Perform the quickening, slowly, in the bowels of the breakpoint table.
__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), R19_method, R14_bcp, Rnew_bc);
__ b(L_patch_done);
__ bind(L_fast_patch);
}
// Patch bytecode.
__ stb(Rnew_bc, 0, R14_bcp);
__ bind(L_patch_done);
}
// ============================================================================
// Individual instructions
void TemplateTable::nop() {
transition(vtos, vtos);
// Nothing to do.
}
void TemplateTable::shouldnotreachhere() {
transition(vtos, vtos);
__ stop("shouldnotreachhere bytecode");
}
void TemplateTable::aconst_null() {
transition(vtos, atos);
__ li(R17_tos, 0);
}
void TemplateTable::iconst(int value) {
transition(vtos, itos);
assert(value >= -1 && value <= 5, "");
__ li(R17_tos, value);
}
void TemplateTable::lconst(int value) {
transition(vtos, ltos);
assert(value >= -1 && value <= 5, "");
__ li(R17_tos, value);
}
void TemplateTable::fconst(int value) {
transition(vtos, ftos);
static float zero = 0.0;
static float one = 1.0;
static float two = 2.0;
switch (value) {
default: ShouldNotReachHere();
case 0: {
int simm16_offset = __ load_const_optimized(R11_scratch1, (address*)&zero, R0, true);
__ lfs(F15_ftos, simm16_offset, R11_scratch1);
break;
}
case 1: {
int simm16_offset = __ load_const_optimized(R11_scratch1, (address*)&one, R0, true);
__ lfs(F15_ftos, simm16_offset, R11_scratch1);
break;
}
case 2: {
int simm16_offset = __ load_const_optimized(R11_scratch1, (address*)&two, R0, true);
__ lfs(F15_ftos, simm16_offset, R11_scratch1);
break;
}
}
}
void TemplateTable::dconst(int value) {
transition(vtos, dtos);
static double zero = 0.0;
static double one = 1.0;
switch (value) {
case 0: {
int simm16_offset = __ load_const_optimized(R11_scratch1, (address*)&zero, R0, true);
__ lfd(F15_ftos, simm16_offset, R11_scratch1);
break;
}
case 1: {
int simm16_offset = __ load_const_optimized(R11_scratch1, (address*)&one, R0, true);
__ lfd(F15_ftos, simm16_offset, R11_scratch1);
break;
}
default: ShouldNotReachHere();
}
}
void TemplateTable::bipush() {
transition(vtos, itos);
__ lbz(R17_tos, 1, R14_bcp);
__ extsb(R17_tos, R17_tos);
}
void TemplateTable::sipush() {
transition(vtos, itos);
__ get_2_byte_integer_at_bcp(1, R17_tos, InterpreterMacroAssembler::Signed);
}
void TemplateTable::ldc(bool wide) {
Register Rscratch1 = R11_scratch1,
Rscratch2 = R12_scratch2,
Rcpool = R3_ARG1;
transition(vtos, vtos);
Label notInt, notFloat, notClass, exit;
__ get_cpool_and_tags(Rcpool, Rscratch2); // Set Rscratch2 = &tags.
if (wide) { // Read index.
__ get_2_byte_integer_at_bcp(1, Rscratch1, InterpreterMacroAssembler::Unsigned);
} else {
__ lbz(Rscratch1, 1, R14_bcp);
}
const int base_offset = ConstantPool::header_size() * wordSize;
const int tags_offset = Array<u1>::base_offset_in_bytes();
// Get type from tags.
__ addi(Rscratch2, Rscratch2, tags_offset);
__ lbzx(Rscratch2, Rscratch2, Rscratch1);
__ cmpwi(CCR0, Rscratch2, JVM_CONSTANT_UnresolvedClass); // Unresolved class?
__ cmpwi(CCR1, Rscratch2, JVM_CONSTANT_UnresolvedClassInError); // Unresolved class in error state?
__ cror(CCR0, Assembler::equal, CCR1, Assembler::equal);
// Resolved class - need to call vm to get java mirror of the class.
__ cmpwi(CCR1, Rscratch2, JVM_CONSTANT_Class);
__ crnor(CCR0, Assembler::equal, CCR1, Assembler::equal); // Neither resolved class nor unresolved case from above?
__ beq(CCR0, notClass);
__ li(R4, wide ? 1 : 0);
call_VM(R17_tos, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), R4);
__ push(atos);
__ b(exit);
__ align(32, 12);
__ bind(notClass);
__ addi(Rcpool, Rcpool, base_offset);
__ sldi(Rscratch1, Rscratch1, LogBytesPerWord);
__ cmpdi(CCR0, Rscratch2, JVM_CONSTANT_Integer);
__ bne(CCR0, notInt);
__ lwax(R17_tos, Rcpool, Rscratch1);
__ push(itos);
__ b(exit);
__ align(32, 12);
__ bind(notInt);
__ cmpdi(CCR0, Rscratch2, JVM_CONSTANT_Float);
__ bne(CCR0, notFloat);
__ lfsx(F15_ftos, Rcpool, Rscratch1);
__ push(ftos);
__ b(exit);
__ align(32, 12);
// assume the tag is for condy; if not, the VM runtime will tell us
__ bind(notFloat);
condy_helper(exit);
__ align(32, 12);
__ bind(exit);
}
// Fast path for caching oop constants.
void TemplateTable::fast_aldc(bool wide) {
transition(vtos, atos);
int index_size = wide ? sizeof(u2) : sizeof(u1);
const Register Rscratch = R11_scratch1;
Label is_null;
// We are resolved if the resolved reference cache entry contains a
// non-null object (CallSite, etc.)
__ get_cache_index_at_bcp(Rscratch, 1, index_size); // Load index.
__ load_resolved_reference_at_index(R17_tos, Rscratch, &is_null);
// Convert null sentinel to NULL.
int simm16_rest = __ load_const_optimized(Rscratch, Universe::the_null_sentinel_addr(), R0, true);
__ ld(Rscratch, simm16_rest, Rscratch);
__ cmpld(CCR0, R17_tos, Rscratch);
if (VM_Version::has_isel()) {
__ isel_0(R17_tos, CCR0, Assembler::equal);
} else {
Label not_sentinel;
__ bne(CCR0, not_sentinel);
__ li(R17_tos, 0);
__ bind(not_sentinel);
}
__ verify_oop(R17_tos);
__ dispatch_epilog(atos, Bytecodes::length_for(bytecode()));
__ bind(is_null);
__ load_const_optimized(R3_ARG1, (int)bytecode());
address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
// First time invocation - must resolve first.
__ call_VM(R17_tos, entry, R3_ARG1);
__ verify_oop(R17_tos);
}
void TemplateTable::ldc2_w() {
transition(vtos, vtos);
Label not_double, not_long, exit;
Register Rindex = R11_scratch1,
Rcpool = R12_scratch2,
Rtag = R3_ARG1;
__ get_cpool_and_tags(Rcpool, Rtag);
__ get_2_byte_integer_at_bcp(1, Rindex, InterpreterMacroAssembler::Unsigned);
const int base_offset = ConstantPool::header_size() * wordSize;
const int tags_offset = Array<u1>::base_offset_in_bytes();
// Get type from tags.
__ addi(Rcpool, Rcpool, base_offset);
__ addi(Rtag, Rtag, tags_offset);
__ lbzx(Rtag, Rtag, Rindex);
__ sldi(Rindex, Rindex, LogBytesPerWord);
__ cmpdi(CCR0, Rtag, JVM_CONSTANT_Double);
__ bne(CCR0, not_double);
__ lfdx(F15_ftos, Rcpool, Rindex);
__ push(dtos);
__ b(exit);
__ bind(not_double);
__ cmpdi(CCR0, Rtag, JVM_CONSTANT_Long);
__ bne(CCR0, not_long);
__ ldx(R17_tos, Rcpool, Rindex);
__ push(ltos);
__ b(exit);
__ bind(not_long);
condy_helper(exit);
__ align(32, 12);
__ bind(exit);
}
void TemplateTable::condy_helper(Label& Done) {
const Register obj = R31;
const Register off = R11_scratch1;
const Register flags = R12_scratch2;
const Register rarg = R4_ARG2;
__ li(rarg, (int)bytecode());
call_VM(obj, CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc), rarg);
__ get_vm_result_2(flags);
// VMr = obj = base address to find primitive value to push
// VMr2 = flags = (tos, off) using format of CPCE::_flags
__ andi(off, flags, ConstantPoolCacheEntry::field_index_mask);
// What sort of thing are we loading?
__ rldicl(flags, flags, 64-ConstantPoolCacheEntry::tos_state_shift, 64-ConstantPoolCacheEntry::tos_state_bits);
switch (bytecode()) {
case Bytecodes::_ldc:
case Bytecodes::_ldc_w:
{
// tos in (itos, ftos, stos, btos, ctos, ztos)
Label notInt, notFloat, notShort, notByte, notChar, notBool;
__ cmplwi(CCR0, flags, itos);
__ bne(CCR0, notInt);
// itos
__ lwax(R17_tos, obj, off);
__ push(itos);
__ b(Done);
__ bind(notInt);
__ cmplwi(CCR0, flags, ftos);
__ bne(CCR0, notFloat);
// ftos
__ lfsx(F15_ftos, obj, off);
__ push(ftos);
__ b(Done);
__ bind(notFloat);
__ cmplwi(CCR0, flags, stos);
__ bne(CCR0, notShort);
// stos
__ lhax(R17_tos, obj, off);
__ push(stos);
__ b(Done);
__ bind(notShort);
__ cmplwi(CCR0, flags, btos);
__ bne(CCR0, notByte);
// btos
__ lbzx(R17_tos, obj, off);
__ extsb(R17_tos, R17_tos);
__ push(btos);
__ b(Done);
__ bind(notByte);
__ cmplwi(CCR0, flags, ctos);
__ bne(CCR0, notChar);
// ctos
__ lhzx(R17_tos, obj, off);
__ push(ctos);
__ b(Done);
__ bind(notChar);
__ cmplwi(CCR0, flags, ztos);
__ bne(CCR0, notBool);
// ztos
__ lbzx(R17_tos, obj, off);
__ push(ztos);
__ b(Done);
__ bind(notBool);
break;
}
case Bytecodes::_ldc2_w:
{
Label notLong, notDouble;
__ cmplwi(CCR0, flags, ltos);
__ bne(CCR0, notLong);
// ltos
__ ldx(R17_tos, obj, off);
__ push(ltos);
__ b(Done);
__ bind(notLong);
__ cmplwi(CCR0, flags, dtos);
__ bne(CCR0, notDouble);
// dtos
__ lfdx(F15_ftos, obj, off);
__ push(dtos);
__ b(Done);
__ bind(notDouble);
break;
}
default:
ShouldNotReachHere();
}
__ stop("bad ldc/condy");
}
// Get the locals index located in the bytecode stream at bcp + offset.
void TemplateTable::locals_index(Register Rdst, int offset) {
__ lbz(Rdst, offset, R14_bcp);
}
void TemplateTable::iload() {
iload_internal();
}
void TemplateTable::nofast_iload() {
iload_internal(may_not_rewrite);
}
void TemplateTable::iload_internal(RewriteControl rc) {
transition(vtos, itos);
// Get the local value into tos
const Register Rindex = R22_tmp2;
locals_index(Rindex);
// Rewrite iload,iload pair into fast_iload2
// iload,caload pair into fast_icaload
if (RewriteFrequentPairs && rc == may_rewrite) {
Label Lrewrite, Ldone;
Register Rnext_byte = R3_ARG1,
Rrewrite_to = R6_ARG4,
Rscratch = R11_scratch1;
// get next byte
__ lbz(Rnext_byte, Bytecodes::length_for(Bytecodes::_iload), R14_bcp);
// if _iload, wait to rewrite to iload2. We only want to rewrite the
// last two iloads in a pair. Comparing against fast_iload means that
// the next bytecode is neither an iload or a caload, and therefore
// an iload pair.
__ cmpwi(CCR0, Rnext_byte, (unsigned int)(unsigned char)Bytecodes::_iload);
__ beq(CCR0, Ldone);
__ cmpwi(CCR1, Rnext_byte, (unsigned int)(unsigned char)Bytecodes::_fast_iload);
__ li(Rrewrite_to, (unsigned int)(unsigned char)Bytecodes::_fast_iload2);
__ beq(CCR1, Lrewrite);
__ cmpwi(CCR0, Rnext_byte, (unsigned int)(unsigned char)Bytecodes::_caload);
__ li(Rrewrite_to, (unsigned int)(unsigned char)Bytecodes::_fast_icaload);
__ beq(CCR0, Lrewrite);
__ li(Rrewrite_to, (unsigned int)(unsigned char)Bytecodes::_fast_iload);
__ bind(Lrewrite);
patch_bytecode(Bytecodes::_iload, Rrewrite_to, Rscratch, false);
__ bind(Ldone);
}
__ load_local_int(R17_tos, Rindex, Rindex);
}
// Load 2 integers in a row without dispatching
void TemplateTable::fast_iload2() {
transition(vtos, itos);
__ lbz(R3_ARG1, 1, R14_bcp);
__ lbz(R17_tos, Bytecodes::length_for(Bytecodes::_iload) + 1, R14_bcp);
__ load_local_int(R3_ARG1, R11_scratch1, R3_ARG1);
__ load_local_int(R17_tos, R12_scratch2, R17_tos);
__ push_i(R3_ARG1);
}
void TemplateTable::fast_iload() {
transition(vtos, itos);
// Get the local value into tos
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ load_local_int(R17_tos, Rindex, Rindex);
}
// Load a local variable type long from locals area to TOS cache register.
// Local index resides in bytecodestream.
void TemplateTable::lload() {
transition(vtos, ltos);
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ load_local_long(R17_tos, Rindex, Rindex);
}
void TemplateTable::fload() {
transition(vtos, ftos);
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ load_local_float(F15_ftos, Rindex, Rindex);
}
void TemplateTable::dload() {
transition(vtos, dtos);
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ load_local_double(F15_ftos, Rindex, Rindex);
}
void TemplateTable::aload() {
transition(vtos, atos);
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ load_local_ptr(R17_tos, Rindex, Rindex);
}
void TemplateTable::locals_index_wide(Register Rdst) {
// Offset is 2, not 1, because Lbcp points to wide prefix code.
__ get_2_byte_integer_at_bcp(2, Rdst, InterpreterMacroAssembler::Unsigned);
}
void TemplateTable::wide_iload() {
// Get the local value into tos.
const Register Rindex = R11_scratch1;
locals_index_wide(Rindex);
__ load_local_int(R17_tos, Rindex, Rindex);
}
void TemplateTable::wide_lload() {
transition(vtos, ltos);
const Register Rindex = R11_scratch1;
locals_index_wide(Rindex);
__ load_local_long(R17_tos, Rindex, Rindex);
}
void TemplateTable::wide_fload() {
transition(vtos, ftos);
const Register Rindex = R11_scratch1;
locals_index_wide(Rindex);
__ load_local_float(F15_ftos, Rindex, Rindex);
}
void TemplateTable::wide_dload() {
transition(vtos, dtos);
const Register Rindex = R11_scratch1;
locals_index_wide(Rindex);
__ load_local_double(F15_ftos, Rindex, Rindex);
}
void TemplateTable::wide_aload() {
transition(vtos, atos);
const Register Rindex = R11_scratch1;
locals_index_wide(Rindex);
__ load_local_ptr(R17_tos, Rindex, Rindex);
}
void TemplateTable::iaload() {
transition(itos, itos);
const Register Rload_addr = R3_ARG1,
Rarray = R4_ARG2,
Rtemp = R5_ARG3;
__ index_check(Rarray, R17_tos /* index */, LogBytesPerInt, Rtemp, Rload_addr);
__ lwa(R17_tos, arrayOopDesc::base_offset_in_bytes(T_INT), Rload_addr);
}
void TemplateTable::laload() {
transition(itos, ltos);
const Register Rload_addr = R3_ARG1,
Rarray = R4_ARG2,
Rtemp = R5_ARG3;
__ index_check(Rarray, R17_tos /* index */, LogBytesPerLong, Rtemp, Rload_addr);
__ ld(R17_tos, arrayOopDesc::base_offset_in_bytes(T_LONG), Rload_addr);
}
void TemplateTable::faload() {
transition(itos, ftos);
const Register Rload_addr = R3_ARG1,
Rarray = R4_ARG2,
Rtemp = R5_ARG3;
__ index_check(Rarray, R17_tos /* index */, LogBytesPerInt, Rtemp, Rload_addr);
__ lfs(F15_ftos, arrayOopDesc::base_offset_in_bytes(T_FLOAT), Rload_addr);
}
void TemplateTable::daload() {
transition(itos, dtos);
const Register Rload_addr = R3_ARG1,
Rarray = R4_ARG2,
Rtemp = R5_ARG3;
__ index_check(Rarray, R17_tos /* index */, LogBytesPerLong, Rtemp, Rload_addr);
__ lfd(F15_ftos, arrayOopDesc::base_offset_in_bytes(T_DOUBLE), Rload_addr);
}
void TemplateTable::aaload() {
transition(itos, atos);
// tos: index
// result tos: array
const Register Rload_addr = R3_ARG1,
Rarray = R4_ARG2,
Rtemp = R5_ARG3,
Rtemp2 = R31;
__ index_check(Rarray, R17_tos /* index */, UseCompressedOops ? 2 : LogBytesPerWord, Rtemp, Rload_addr);
do_oop_load(_masm, Rload_addr, arrayOopDesc::base_offset_in_bytes(T_OBJECT), R17_tos, Rtemp, Rtemp2,
IS_ARRAY);
__ verify_oop(R17_tos);
//__ dcbt(R17_tos); // prefetch
}
void TemplateTable::baload() {
transition(itos, itos);
const Register Rload_addr = R3_ARG1,
Rarray = R4_ARG2,
Rtemp = R5_ARG3;
__ index_check(Rarray, R17_tos /* index */, 0, Rtemp, Rload_addr);
__ lbz(R17_tos, arrayOopDesc::base_offset_in_bytes(T_BYTE), Rload_addr);
__ extsb(R17_tos, R17_tos);
}
void TemplateTable::caload() {
transition(itos, itos);
const Register Rload_addr = R3_ARG1,
Rarray = R4_ARG2,
Rtemp = R5_ARG3;
__ index_check(Rarray, R17_tos /* index */, LogBytesPerShort, Rtemp, Rload_addr);
__ lhz(R17_tos, arrayOopDesc::base_offset_in_bytes(T_CHAR), Rload_addr);
}
// Iload followed by caload frequent pair.
void TemplateTable::fast_icaload() {
transition(vtos, itos);
const Register Rload_addr = R3_ARG1,
Rarray = R4_ARG2,
Rtemp = R11_scratch1;
locals_index(R17_tos);
__ load_local_int(R17_tos, Rtemp, R17_tos);
__ index_check(Rarray, R17_tos /* index */, LogBytesPerShort, Rtemp, Rload_addr);
__ lhz(R17_tos, arrayOopDesc::base_offset_in_bytes(T_CHAR), Rload_addr);
}
void TemplateTable::saload() {
transition(itos, itos);
const Register Rload_addr = R11_scratch1,
Rarray = R12_scratch2,
Rtemp = R3_ARG1;
__ index_check(Rarray, R17_tos /* index */, LogBytesPerShort, Rtemp, Rload_addr);
__ lha(R17_tos, arrayOopDesc::base_offset_in_bytes(T_SHORT), Rload_addr);
}
void TemplateTable::iload(int n) {
transition(vtos, itos);
__ lwz(R17_tos, Interpreter::local_offset_in_bytes(n), R18_locals);
}
void TemplateTable::lload(int n) {
transition(vtos, ltos);
__ ld(R17_tos, Interpreter::local_offset_in_bytes(n + 1), R18_locals);
}
void TemplateTable::fload(int n) {
transition(vtos, ftos);
__ lfs(F15_ftos, Interpreter::local_offset_in_bytes(n), R18_locals);
}
void TemplateTable::dload(int n) {
transition(vtos, dtos);
__ lfd(F15_ftos, Interpreter::local_offset_in_bytes(n + 1), R18_locals);
}
void TemplateTable::aload(int n) {
transition(vtos, atos);
__ ld(R17_tos, Interpreter::local_offset_in_bytes(n), R18_locals);
}
void TemplateTable::aload_0() {
aload_0_internal();
}
void TemplateTable::nofast_aload_0() {
aload_0_internal(may_not_rewrite);
}
void TemplateTable::aload_0_internal(RewriteControl rc) {
transition(vtos, atos);
// According to bytecode histograms, the pairs:
//
// _aload_0, _fast_igetfield
// _aload_0, _fast_agetfield
// _aload_0, _fast_fgetfield
//
// occur frequently. If RewriteFrequentPairs is set, the (slow)
// _aload_0 bytecode checks if the next bytecode is either
// _fast_igetfield, _fast_agetfield or _fast_fgetfield and then
// rewrites the current bytecode into a pair bytecode; otherwise it
// rewrites the current bytecode into _0 that doesn't do
// the pair check anymore.
//
// Note: If the next bytecode is _getfield, the rewrite must be
// delayed, otherwise we may miss an opportunity for a pair.
//
// Also rewrite frequent pairs
// aload_0, aload_1
// aload_0, iload_1
// These bytecodes with a small amount of code are most profitable
// to rewrite.
if (RewriteFrequentPairs && rc == may_rewrite) {
Label Lrewrite, Ldont_rewrite;
Register Rnext_byte = R3_ARG1,
Rrewrite_to = R6_ARG4,
Rscratch = R11_scratch1;
// Get next byte.
__ lbz(Rnext_byte, Bytecodes::length_for(Bytecodes::_aload_0), R14_bcp);
// If _getfield, wait to rewrite. We only want to rewrite the last two bytecodes in a pair.
__ cmpwi(CCR0, Rnext_byte, (unsigned int)(unsigned char)Bytecodes::_getfield);
__ beq(CCR0, Ldont_rewrite);
__ cmpwi(CCR1, Rnext_byte, (unsigned int)(unsigned char)Bytecodes::_fast_igetfield);
__ li(Rrewrite_to, (unsigned int)(unsigned char)Bytecodes::_fast_iaccess_0);
__ beq(CCR1, Lrewrite);
__ cmpwi(CCR0, Rnext_byte, (unsigned int)(unsigned char)Bytecodes::_fast_agetfield);
__ li(Rrewrite_to, (unsigned int)(unsigned char)Bytecodes::_fast_aaccess_0);
__ beq(CCR0, Lrewrite);
__ cmpwi(CCR1, Rnext_byte, (unsigned int)(unsigned char)Bytecodes::_fast_fgetfield);
__ li(Rrewrite_to, (unsigned int)(unsigned char)Bytecodes::_fast_faccess_0);
__ beq(CCR1, Lrewrite);
__ li(Rrewrite_to, (unsigned int)(unsigned char)Bytecodes::_fast_aload_0);
__ bind(Lrewrite);
patch_bytecode(Bytecodes::_aload_0, Rrewrite_to, Rscratch, false);
__ bind(Ldont_rewrite);
}
// Do actual aload_0 (must do this after patch_bytecode which might call VM and GC might change oop).
aload(0);
}
void TemplateTable::istore() {
transition(itos, vtos);
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ store_local_int(R17_tos, Rindex);
}
void TemplateTable::lstore() {
transition(ltos, vtos);
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ store_local_long(R17_tos, Rindex);
}
void TemplateTable::fstore() {
transition(ftos, vtos);
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ store_local_float(F15_ftos, Rindex);
}
void TemplateTable::dstore() {
transition(dtos, vtos);
const Register Rindex = R11_scratch1;
locals_index(Rindex);
__ store_local_double(F15_ftos, Rindex);
}
void TemplateTable::astore() {
transition(vtos, vtos);
const Register Rindex = R11_scratch1;
__ pop_ptr();
__ verify_oop_or_return_address(R17_tos, Rindex);
locals_index(Rindex);
__ store_local_ptr(R17_tos, Rindex);
}
void TemplateTable::wide_istore() {
transition(vtos, vtos);
const Register Rindex = R11_scratch1;
__ pop_i();
locals_index_wide(Rindex);
__ store_local_int(R17_tos, Rindex);
}
void TemplateTable::wide_lstore() {
transition(vtos, vtos);
const Register Rindex = R11_scratch1;
__ pop_l();
locals_index_wide(Rindex);
__ store_local_long(R17_tos, Rindex);
}
void TemplateTable::wide_fstore() {
transition(vtos, vtos);
const Register Rindex = R11_scratch1;
__ pop_f();
locals_index_wide(Rindex);
__ store_local_float(F15_ftos, Rindex);
}
void TemplateTable::wide_dstore() {
transition(vtos, vtos);
const Register Rindex = R11_scratch1;
__ pop_d();
locals_index_wide(Rindex);
__ store_local_double(F15_ftos, Rindex);
}
void TemplateTable::wide_astore() {
transition(vtos, vtos);
const Register Rindex = R11_scratch1;
__ pop_ptr();
__ verify_oop_or_return_address(R17_tos, Rindex);
locals_index_wide(Rindex);
__ store_local_ptr(R17_tos, Rindex);
}
void TemplateTable::iastore() {
transition(itos, vtos);
const Register Rindex = R3_ARG1,
Rstore_addr = R4_ARG2,
Rarray = R5_ARG3,
Rtemp = R6_ARG4;
__ pop_i(Rindex);
__ index_check(Rarray, Rindex, LogBytesPerInt, Rtemp, Rstore_addr);
__ stw(R17_tos, arrayOopDesc::base_offset_in_bytes(T_INT), Rstore_addr);
}
void TemplateTable::lastore() {
transition(ltos, vtos);
const Register Rindex = R3_ARG1,
Rstore_addr = R4_ARG2,
Rarray = R5_ARG3,
Rtemp = R6_ARG4;
__ pop_i(Rindex);
__ index_check(Rarray, Rindex, LogBytesPerLong, Rtemp, Rstore_addr);
__ std(R17_tos, arrayOopDesc::base_offset_in_bytes(T_LONG), Rstore_addr);
}
void TemplateTable::fastore() {
transition(ftos, vtos);
const Register Rindex = R3_ARG1,
Rstore_addr = R4_ARG2,
Rarray = R5_ARG3,
Rtemp = R6_ARG4;
__ pop_i(Rindex);
__ index_check(Rarray, Rindex, LogBytesPerInt, Rtemp, Rstore_addr);
__ stfs(F15_ftos, arrayOopDesc::base_offset_in_bytes(T_FLOAT), Rstore_addr);
}
void TemplateTable::dastore() {
transition(dtos, vtos);
const Register Rindex = R3_ARG1,
Rstore_addr = R4_ARG2,
Rarray = R5_ARG3,
Rtemp = R6_ARG4;
__ pop_i(Rindex);
__ index_check(Rarray, Rindex, LogBytesPerLong, Rtemp, Rstore_addr);
__ stfd(F15_ftos, arrayOopDesc::base_offset_in_bytes(T_DOUBLE), Rstore_addr);
}
// Pop 3 values from the stack and...
void TemplateTable::aastore() {
transition(vtos, vtos);
Label Lstore_ok, Lis_null, Ldone;
const Register Rindex = R3_ARG1,
Rarray = R4_ARG2,
Rscratch = R11_scratch1,
Rscratch2 = R12_scratch2,
Rarray_klass = R5_ARG3,
Rarray_element_klass = Rarray_klass,
Rvalue_klass = R6_ARG4,
Rstore_addr = R31; // Use register which survives VM call.
__ ld(R17_tos, Interpreter::expr_offset_in_bytes(0), R15_esp); // Get value to store.
__ lwz(Rindex, Interpreter::expr_offset_in_bytes(1), R15_esp); // Get index.
__ ld(Rarray, Interpreter::expr_offset_in_bytes(2), R15_esp); // Get array.
__ verify_oop(R17_tos);
__ index_check_without_pop(Rarray, Rindex, UseCompressedOops ? 2 : LogBytesPerWord, Rscratch, Rstore_addr);
// Rindex is dead!
Register Rscratch3 = Rindex;
// Do array store check - check for NULL value first.