jdk8-mips64-public/hotspot: src/cpu/sparc/vm/assembler_sparc.inline.hpp@6729bbc1fcd6 (annotated)

src/cpu/sparc/vm/assembler_sparc.inline.hpp@6729bbc1fcd6 (annotated)

src/cpu/sparc/vm/assembler_sparc.inline.hpp

Wed, 16 Nov 2011 01:39:50 -0800

author: twisti
date: Wed, 16 Nov 2011 01:39:50 -0800
changeset 3310: 6729bbc1fcd6
parent 3255: 44ce519bc3d1
child 3500: 0382d2b469b2
permissions: -rw-r--r--

7003454: order constants in constant table by number of references in code
Reviewed-by: kvn, never, bdelsart

 /*
  * Copyright (c) 1997, 2011, 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.
  *
  */
 #ifndef CPU_SPARC_VM_ASSEMBLER_SPARC_INLINE_HPP
 #define CPU_SPARC_VM_ASSEMBLER_SPARC_INLINE_HPP
 #include "asm/assembler.inline.hpp"
 #include "asm/codeBuffer.hpp"
 #include "code/codeCache.hpp"
 #include "runtime/handles.inline.hpp"
 inline void MacroAssembler::pd_patch_instruction(address branch, address target) {
   jint& stub_inst = *(jint*) branch;
   stub_inst = patched_branch(target - branch, stub_inst, 0);
 }
 #ifndef PRODUCT
 inline void MacroAssembler::pd_print_patched_instruction(address branch) {
   jint stub_inst = *(jint*) branch;
   print_instruction(stub_inst);
   ::tty->print("%s", " (unresolved)");
 }
 #endif // PRODUCT
 inline bool Address::is_simm13(int offset) { return Assembler::is_simm13(disp() + offset); }
 inline int AddressLiteral::low10() const {
   return Assembler::low10(value());
 }
 // inlines for SPARC assembler -- dmu 5/97
 inline void Assembler::check_delay() {
 # ifdef CHECK_DELAY
   guarantee( delay_state != at_delay_slot, "must say delayed() when filling delay slot");
   delay_state = no_delay;
 # endif
 }
 inline void Assembler::emit_long(int x) {
   check_delay();
   AbstractAssembler::emit_long(x);
 }
 inline void Assembler::emit_data(int x, relocInfo::relocType rtype) {
   relocate(rtype);
   emit_long(x);
 }
 inline void Assembler::emit_data(int x, RelocationHolder const& rspec) {
   relocate(rspec);
   emit_long(x);
 }
 inline void Assembler::add(Register s1, Register s2, Register d )                             { emit_long( op(arith_op) | rd(d) | op3(add_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::add(Register s1, int simm13a, Register d, relocInfo::relocType rtype ) { emit_data( op(arith_op) | rd(d) | op3(add_op3) | rs1(s1) | immed(true) | simm(simm13a, 13), rtype ); }
 inline void Assembler::add(Register s1, int simm13a, Register d, RelocationHolder const& rspec ) { emit_data( op(arith_op) | rd(d) | op3(add_op3) | rs1(s1) | immed(true) | simm(simm13a, 13), rspec ); }
 inline void Assembler::bpr( RCondition c, bool a, Predict p, Register s1, address d, relocInfo::relocType rt ) { v9_only();  cti();  emit_data( op(branch_op) | annul(a) | cond(c) | op2(bpr_op2) | wdisp16(intptr_t(d), intptr_t(pc())) | predict(p) | rs1(s1), rt);  has_delay_slot(); }
 inline void Assembler::bpr( RCondition c, bool a, Predict p, Register s1, Label& L) { bpr( c, a, p, s1, target(L)); }
 inline void Assembler::fb( Condition c, bool a, address d, relocInfo::relocType rt ) { v9_dep();  cti();  emit_data( op(branch_op) | annul(a) | cond(c) | op2(fb_op2) | wdisp(intptr_t(d), intptr_t(pc()), 22), rt);  has_delay_slot(); }
 inline void Assembler::fb( Condition c, bool a, Label& L ) { fb(c, a, target(L)); }
 inline void Assembler::fbp( Condition c, bool a, CC cc, Predict p, address d, relocInfo::relocType rt ) { v9_only();  cti();  emit_data( op(branch_op) | annul(a) | cond(c) | op2(fbp_op2) | branchcc(cc) | predict(p) | wdisp(intptr_t(d), intptr_t(pc()), 19), rt);  has_delay_slot(); }
 inline void Assembler::fbp( Condition c, bool a, CC cc, Predict p, Label& L ) { fbp(c, a, cc, p, target(L)); }
 inline void Assembler::cb( Condition c, bool a, address d, relocInfo::relocType rt ) { v8_only();  cti();  emit_data( op(branch_op) | annul(a) | cond(c) | op2(cb_op2) | wdisp(intptr_t(d), intptr_t(pc()), 22), rt);  has_delay_slot(); }
 inline void Assembler::cb( Condition c, bool a, Label& L ) { cb(c, a, target(L)); }
 inline void Assembler::br( Condition c, bool a, address d, relocInfo::relocType rt ) { v9_dep();  cti();   emit_data( op(branch_op) | annul(a) | cond(c) | op2(br_op2) | wdisp(intptr_t(d), intptr_t(pc()), 22), rt);  has_delay_slot(); }
 inline void Assembler::br( Condition c, bool a, Label& L ) { br(c, a, target(L)); }
 inline void Assembler::bp( Condition c, bool a, CC cc, Predict p, address d, relocInfo::relocType rt ) { v9_only();  cti();  emit_data( op(branch_op) | annul(a) | cond(c) | op2(bp_op2) | branchcc(cc) | predict(p) | wdisp(intptr_t(d), intptr_t(pc()), 19), rt);  has_delay_slot(); }
 inline void Assembler::bp( Condition c, bool a, CC cc, Predict p, Label& L ) { bp(c, a, cc, p, target(L)); }
 // compare and branch
 inline void Assembler::cbcond(Condition c, CC cc, Register s1, Register s2, Label& L) { cti();  no_cbcond_before();  emit_data(op(branch_op) | cond_cbcond(c) | op2(bpr_op2) | branchcc(cc) | wdisp10(intptr_t(target(L)), intptr_t(pc())) | rs1(s1) | rs2(s2)); }
 inline void Assembler::cbcond(Condition c, CC cc, Register s1, int simm5, Label& L)   { cti();  no_cbcond_before();  emit_data(op(branch_op) | cond_cbcond(c) | op2(bpr_op2) | branchcc(cc) | wdisp10(intptr_t(target(L)), intptr_t(pc())) | rs1(s1) | immed(true) | simm(simm5, 5)); }
 inline void Assembler::call( address d,  relocInfo::relocType rt ) { cti();  emit_data( op(call_op) | wdisp(intptr_t(d), intptr_t(pc()), 30), rt);  has_delay_slot(); assert(rt != relocInfo::virtual_call_type, "must use virtual_call_Relocation::spec"); }
 inline void Assembler::call( Label& L,   relocInfo::relocType rt ) { call( target(L), rt); }
 inline void Assembler::flush( Register s1, Register s2) { emit_long( op(arith_op) | op3(flush_op3) | rs1(s1) | rs2(s2)); }
 inline void Assembler::flush( Register s1, int simm13a) { emit_data( op(arith_op) | op3(flush_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::jmpl( Register s1, Register s2, Register d ) { cti();  emit_long( op(arith_op) | rd(d) | op3(jmpl_op3) | rs1(s1) | rs2(s2));  has_delay_slot(); }
 inline void Assembler::jmpl( Register s1, int simm13a, Register d, RelocationHolder const& rspec ) { cti();  emit_data( op(arith_op) | rd(d) | op3(jmpl_op3) | rs1(s1) | immed(true) | simm(simm13a, 13), rspec);  has_delay_slot(); }
 inline void Assembler::ldf(FloatRegisterImpl::Width w, Register s1, RegisterOrConstant s2, FloatRegister d) {
   if (s2.is_register()) ldf(w, s1, s2.as_register(), d);
   else                  ldf(w, s1, s2.as_constant(), d);
 }
 inline void Assembler::ldf(FloatRegisterImpl::Width w, Register s1, Register s2, FloatRegister d) { emit_long( op(ldst_op) | fd(d, w) | alt_op3(ldf_op3, w) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldf(FloatRegisterImpl::Width w, Register s1, int simm13a, FloatRegister d, RelocationHolder const& rspec) { emit_data( op(ldst_op) | fd(d, w) | alt_op3(ldf_op3, w) | rs1(s1) | immed(true) | simm(simm13a, 13), rspec); }
 inline void Assembler::ldf(FloatRegisterImpl::Width w, const Address& a, FloatRegister d, int offset) { relocate(a.rspec(offset)); ldf( w, a.base(), a.disp() + offset, d); }
 inline void Assembler::ldfsr(  Register s1, Register s2) { v9_dep();   emit_long( op(ldst_op) |             op3(ldfsr_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldfsr(  Register s1, int simm13a) { v9_dep();   emit_data( op(ldst_op) |             op3(ldfsr_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldxfsr( Register s1, Register s2) { v9_only();  emit_long( op(ldst_op) | rd(G1)    | op3(ldfsr_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldxfsr( Register s1, int simm13a) { v9_only();  emit_data( op(ldst_op) | rd(G1)    | op3(ldfsr_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldc(   Register s1, Register s2, int crd) { v8_only();  emit_long( op(ldst_op) | fcn(crd) | op3(ldc_op3  ) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldc(   Register s1, int simm13a, int crd) { v8_only();  emit_data( op(ldst_op) | fcn(crd) | op3(ldc_op3  ) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::lddc(  Register s1, Register s2, int crd) { v8_only();  emit_long( op(ldst_op) | fcn(crd) | op3(lddc_op3 ) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::lddc(  Register s1, int simm13a, int crd) { v8_only();  emit_data( op(ldst_op) | fcn(crd) | op3(lddc_op3 ) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldcsr( Register s1, Register s2, int crd) { v8_only();  emit_long( op(ldst_op) | fcn(crd) | op3(ldcsr_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldcsr( Register s1, int simm13a, int crd) { v8_only();  emit_data( op(ldst_op) | fcn(crd) | op3(ldcsr_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldsb(  Register s1, Register s2, Register d) { emit_long( op(ldst_op) | rd(d) | op3(ldsb_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldsb(  Register s1, int simm13a, Register d) { emit_data( op(ldst_op) | rd(d) | op3(ldsb_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldsh(  Register s1, Register s2, Register d) { emit_long( op(ldst_op) | rd(d) | op3(ldsh_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldsh(  Register s1, int simm13a, Register d) { emit_data( op(ldst_op) | rd(d) | op3(ldsh_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldsw(  Register s1, Register s2, Register d) { emit_long( op(ldst_op) | rd(d) | op3(ldsw_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldsw(  Register s1, int simm13a, Register d) { emit_data( op(ldst_op) | rd(d) | op3(ldsw_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldub(  Register s1, Register s2, Register d) { emit_long( op(ldst_op) | rd(d) | op3(ldub_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldub(  Register s1, int simm13a, Register d) { emit_data( op(ldst_op) | rd(d) | op3(ldub_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::lduh(  Register s1, Register s2, Register d) { emit_long( op(ldst_op) | rd(d) | op3(lduh_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::lduh(  Register s1, int simm13a, Register d) { emit_data( op(ldst_op) | rd(d) | op3(lduh_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::lduw(  Register s1, Register s2, Register d) { emit_long( op(ldst_op) | rd(d) | op3(lduw_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::lduw(  Register s1, int simm13a, Register d) { emit_data( op(ldst_op) | rd(d) | op3(lduw_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldx(   Register s1, Register s2, Register d) { v9_only();  emit_long( op(ldst_op) | rd(d) | op3(ldx_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldx(   Register s1, int simm13a, Register d) { v9_only();  emit_data( op(ldst_op) | rd(d) | op3(ldx_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::ldd(   Register s1, Register s2, Register d) { v9_dep(); assert(d->is_even(), "not even"); emit_long( op(ldst_op) | rd(d) | op3(ldd_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldd(   Register s1, int simm13a, Register d) { v9_dep(); assert(d->is_even(), "not even"); emit_data( op(ldst_op) | rd(d) | op3(ldd_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 #ifdef _LP64
 // Make all 32 bit loads signed so 64 bit registers maintain proper sign
 inline void Assembler::ld(  Register s1, Register s2, Register d)      { ldsw( s1, s2, d); }
 inline void Assembler::ld(  Register s1, int simm13a, Register d)      { ldsw( s1, simm13a, d); }
 #else
 inline void Assembler::ld(  Register s1, Register s2, Register d)      { lduw( s1, s2, d); }
 inline void Assembler::ld(  Register s1, int simm13a, Register d)      { lduw( s1, simm13a, d); }
 #endif
 #ifdef ASSERT
   // ByteSize is only a class when ASSERT is defined, otherwise it's an int.
 # ifdef _LP64
 inline void Assembler::ld(  Register s1, ByteSize simm13a, Register d) { ldsw( s1, in_bytes(simm13a), d); }
 # else
 inline void Assembler::ld(  Register s1, ByteSize simm13a, Register d) { lduw( s1, in_bytes(simm13a), d); }
 # endif
 #endif
 inline void Assembler::ld(  const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); ld(  a.base(), a.index(),         d); }
   else               {                          ld(  a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::ldsb(const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); ldsb(a.base(), a.index(),         d); }
   else               {                          ldsb(a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::ldsh(const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); ldsh(a.base(), a.index(),         d); }
   else               {                          ldsh(a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::ldsw(const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); ldsw(a.base(), a.index(),         d); }
   else               {                          ldsw(a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::ldub(const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); ldub(a.base(), a.index(),         d); }
   else               {                          ldub(a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::lduh(const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); lduh(a.base(), a.index(),         d); }
   else               {                          lduh(a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::lduw(const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); lduw(a.base(), a.index(),         d); }
   else               {                          lduw(a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::ldd( const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); ldd( a.base(), a.index(),         d); }
   else               {                          ldd( a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::ldx( const Address& a, Register d, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); ldx( a.base(), a.index(),         d); }
   else               {                          ldx( a.base(), a.disp() + offset, d); }
 }
 inline void Assembler::ldub(Register s1, RegisterOrConstant s2, Register d) { ldub(Address(s1, s2), d); }
 inline void Assembler::ldsb(Register s1, RegisterOrConstant s2, Register d) { ldsb(Address(s1, s2), d); }
 inline void Assembler::lduh(Register s1, RegisterOrConstant s2, Register d) { lduh(Address(s1, s2), d); }
 inline void Assembler::ldsh(Register s1, RegisterOrConstant s2, Register d) { ldsh(Address(s1, s2), d); }
 inline void Assembler::lduw(Register s1, RegisterOrConstant s2, Register d) { lduw(Address(s1, s2), d); }
 inline void Assembler::ldsw(Register s1, RegisterOrConstant s2, Register d) { ldsw(Address(s1, s2), d); }
 inline void Assembler::ldx( Register s1, RegisterOrConstant s2, Register d) { ldx( Address(s1, s2), d); }
 inline void Assembler::ld(  Register s1, RegisterOrConstant s2, Register d) { ld(  Address(s1, s2), d); }
 inline void Assembler::ldd( Register s1, RegisterOrConstant s2, Register d) { ldd( Address(s1, s2), d); }
 // form effective addresses this way:
 inline void Assembler::add(const Address& a, Register d, int offset) {
   if (a.has_index())   add(a.base(), a.index(),         d);
   else               { add(a.base(), a.disp() + offset, d, a.rspec(offset)); offset = 0; }
   if (offset != 0)     add(d,        offset,            d);
 }
 inline void Assembler::add(Register s1, RegisterOrConstant s2, Register d, int offset) {
   if (s2.is_register())  add(s1, s2.as_register(),          d);
   else                 { add(s1, s2.as_constant() + offset, d); offset = 0; }
   if (offset != 0)       add(d,  offset,                    d);
 }
 inline void Assembler::andn(Register s1, RegisterOrConstant s2, Register d) {
   if (s2.is_register())  andn(s1, s2.as_register(), d);
   else                   andn(s1, s2.as_constant(), d);
 }
 inline void Assembler::ldstub(  Register s1, Register s2, Register d) { emit_long( op(ldst_op) | rd(d) | op3(ldstub_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::ldstub(  Register s1, int simm13a, Register d) { emit_data( op(ldst_op) | rd(d) | op3(ldstub_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::prefetch(Register s1, Register s2, PrefetchFcn f) { v9_only();  emit_long( op(ldst_op) | fcn(f) | op3(prefetch_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::prefetch(Register s1, int simm13a, PrefetchFcn f) { v9_only();  emit_data( op(ldst_op) | fcn(f) | op3(prefetch_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::prefetch(const Address& a, PrefetchFcn f, int offset) { v9_only(); relocate(a.rspec(offset)); prefetch(a.base(), a.disp() + offset, f); }
 inline void Assembler::rett( Register s1, Register s2                         ) { cti();  emit_long( op(arith_op) | op3(rett_op3) | rs1(s1) | rs2(s2));  has_delay_slot(); }
 inline void Assembler::rett( Register s1, int simm13a, relocInfo::relocType rt) { cti();  emit_data( op(arith_op) | op3(rett_op3) | rs1(s1) | immed(true) | simm(simm13a, 13), rt);  has_delay_slot(); }
 inline void Assembler::sethi( int imm22a, Register d, RelocationHolder const& rspec ) { emit_data( op(branch_op) | rd(d) | op2(sethi_op2) | hi22(imm22a), rspec); }
   // pp 222
 inline void Assembler::stf(    FloatRegisterImpl::Width w, FloatRegister d, Register s1, RegisterOrConstant s2) {
   if (s2.is_register()) stf(w, d, s1, s2.as_register());
   else                  stf(w, d, s1, s2.as_constant());
 }
 inline void Assembler::stf(    FloatRegisterImpl::Width w, FloatRegister d, Register s1, Register s2) { emit_long( op(ldst_op) | fd(d, w) | alt_op3(stf_op3, w) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stf(    FloatRegisterImpl::Width w, FloatRegister d, Register s1, int simm13a) { emit_data( op(ldst_op) | fd(d, w) | alt_op3(stf_op3, w) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::stf(    FloatRegisterImpl::Width w, FloatRegister d, const Address& a, int offset) {
   relocate(a.rspec(offset));
   if (a.has_index()) { assert(offset == 0, ""); stf(w, d, a.base(), a.index()        ); }
   else               {                          stf(w, d, a.base(), a.disp() + offset); }
 }
 inline void Assembler::stfsr(  Register s1, Register s2) { v9_dep();   emit_long( op(ldst_op) |             op3(stfsr_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stfsr(  Register s1, int simm13a) { v9_dep();   emit_data( op(ldst_op) |             op3(stfsr_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::stxfsr( Register s1, Register s2) { v9_only();  emit_long( op(ldst_op) | rd(G1)    | op3(stfsr_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stxfsr( Register s1, int simm13a) { v9_only();  emit_data( op(ldst_op) | rd(G1)    | op3(stfsr_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
   // p 226
 inline void Assembler::stb(  Register d, Register s1, Register s2) { emit_long( op(ldst_op) | rd(d) | op3(stb_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stb(  Register d, Register s1, int simm13a) { emit_data( op(ldst_op) | rd(d) | op3(stb_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::sth(  Register d, Register s1, Register s2) { emit_long( op(ldst_op) | rd(d) | op3(sth_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::sth(  Register d, Register s1, int simm13a) { emit_data( op(ldst_op) | rd(d) | op3(sth_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::stw(  Register d, Register s1, Register s2) { emit_long( op(ldst_op) | rd(d) | op3(stw_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stw(  Register d, Register s1, int simm13a) { emit_data( op(ldst_op) | rd(d) | op3(stw_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::stx(  Register d, Register s1, Register s2) { v9_only();  emit_long( op(ldst_op) | rd(d) | op3(stx_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stx(  Register d, Register s1, int simm13a) { v9_only();  emit_data( op(ldst_op) | rd(d) | op3(stx_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::std(  Register d, Register s1, Register s2) { v9_dep(); assert(d->is_even(), "not even"); emit_long( op(ldst_op) | rd(d) | op3(std_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::std(  Register d, Register s1, int simm13a) { v9_dep(); assert(d->is_even(), "not even"); emit_data( op(ldst_op) | rd(d) | op3(std_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::st( Register d, Register s1, Register s2)      { stw(d, s1, s2); }
 inline void Assembler::st( Register d, Register s1, int simm13a)      { stw(d, s1, simm13a); }
 #ifdef ASSERT
 // ByteSize is only a class when ASSERT is defined, otherwise it's an int.
 inline void Assembler::st( Register d, Register s1, ByteSize simm13a) { stw(d, s1, in_bytes(simm13a)); }
 #endif
 inline void Assembler::stb(Register d, const Address& a, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); stb(d, a.base(), a.index()        ); }
   else               {                          stb(d, a.base(), a.disp() + offset); }
 }
 inline void Assembler::sth(Register d, const Address& a, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); sth(d, a.base(), a.index()        ); }
   else               {                          sth(d, a.base(), a.disp() + offset); }
 }
 inline void Assembler::stw(Register d, const Address& a, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); stw(d, a.base(), a.index()        ); }
   else               {                          stw(d, a.base(), a.disp() + offset); }
 }
 inline void Assembler::st( Register d, const Address& a, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); st( d, a.base(), a.index()        ); }
   else               {                          st( d, a.base(), a.disp() + offset); }
 }
 inline void Assembler::std(Register d, const Address& a, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); std(d, a.base(), a.index()        ); }
   else               {                          std(d, a.base(), a.disp() + offset); }
 }
 inline void Assembler::stx(Register d, const Address& a, int offset) {
   if (a.has_index()) { assert(offset == 0, ""); stx(d, a.base(), a.index()        ); }
   else               {                          stx(d, a.base(), a.disp() + offset); }
 }
 inline void Assembler::stb(Register d, Register s1, RegisterOrConstant s2) { stb(d, Address(s1, s2)); }
 inline void Assembler::sth(Register d, Register s1, RegisterOrConstant s2) { sth(d, Address(s1, s2)); }
 inline void Assembler::stw(Register d, Register s1, RegisterOrConstant s2) { stw(d, Address(s1, s2)); }
 inline void Assembler::stx(Register d, Register s1, RegisterOrConstant s2) { stx(d, Address(s1, s2)); }
 inline void Assembler::std(Register d, Register s1, RegisterOrConstant s2) { std(d, Address(s1, s2)); }
 inline void Assembler::st( Register d, Register s1, RegisterOrConstant s2) { st( d, Address(s1, s2)); }
 // v8 p 99
 inline void Assembler::stc(    int crd, Register s1, Register s2) { v8_only();  emit_long( op(ldst_op) | fcn(crd) | op3(stc_op3 ) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stc(    int crd, Register s1, int simm13a) { v8_only();  emit_data( op(ldst_op) | fcn(crd) | op3(stc_op3 ) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::stdc(   int crd, Register s1, Register s2) { v8_only();  emit_long( op(ldst_op) | fcn(crd) | op3(stdc_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stdc(   int crd, Register s1, int simm13a) { v8_only();  emit_data( op(ldst_op) | fcn(crd) | op3(stdc_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::stcsr(  int crd, Register s1, Register s2) { v8_only();  emit_long( op(ldst_op) | fcn(crd) | op3(stcsr_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stcsr(  int crd, Register s1, int simm13a) { v8_only();  emit_data( op(ldst_op) | fcn(crd) | op3(stcsr_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::stdcq(  int crd, Register s1, Register s2) { v8_only();  emit_long( op(ldst_op) | fcn(crd) | op3(stdcq_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::stdcq(  int crd, Register s1, int simm13a) { v8_only();  emit_data( op(ldst_op) | fcn(crd) | op3(stdcq_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::sub(Register s1, RegisterOrConstant s2, Register d, int offset) {
   if (s2.is_register())  sub(s1, s2.as_register(),          d);
   else                 { sub(s1, s2.as_constant() + offset, d); offset = 0; }
   if (offset != 0)       sub(d,  offset,                    d);
 }
 // pp 231
 inline void Assembler::swap(    Register s1, Register s2, Register d) { v9_dep();  emit_long( op(ldst_op) | rd(d) | op3(swap_op3) | rs1(s1) | rs2(s2) ); }
 inline void Assembler::swap(    Register s1, int simm13a, Register d) { v9_dep();  emit_data( op(ldst_op) | rd(d) | op3(swap_op3) | rs1(s1) | immed(true) | simm(simm13a, 13)); }
 inline void Assembler::swap(    Address& a, Register d, int offset ) { relocate(a.rspec(offset)); swap(  a.base(), a.disp() + offset, d ); }
 // Use the right loads/stores for the platform
 inline void MacroAssembler::ld_ptr( Register s1, Register s2, Register d ) {
 #ifdef _LP64
   Assembler::ldx(s1, s2, d);
 #else
   Assembler::ld( s1, s2, d);
 #endif
 }
 inline void MacroAssembler::ld_ptr( Register s1, int simm13a, Register d ) {
 #ifdef _LP64
   Assembler::ldx(s1, simm13a, d);
 #else
   Assembler::ld( s1, simm13a, d);
 #endif
 }
 #ifdef ASSERT
 // ByteSize is only a class when ASSERT is defined, otherwise it's an int.
 inline void MacroAssembler::ld_ptr( Register s1, ByteSize simm13a, Register d ) {
   ld_ptr(s1, in_bytes(simm13a), d);
 }
 #endif
 inline void MacroAssembler::ld_ptr( Register s1, RegisterOrConstant s2, Register d ) {
 #ifdef _LP64
   Assembler::ldx(s1, s2, d);
 #else
   Assembler::ld( s1, s2, d);
 #endif
 }
 inline void MacroAssembler::ld_ptr(const Address& a, Register d, int offset) {
 #ifdef _LP64
   Assembler::ldx(a, d, offset);
 #else
   Assembler::ld( a, d, offset);
 #endif
 }
 inline void MacroAssembler::st_ptr( Register d, Register s1, Register s2 ) {
 #ifdef _LP64
   Assembler::stx(d, s1, s2);
 #else
   Assembler::st( d, s1, s2);
 #endif
 }
 inline void MacroAssembler::st_ptr( Register d, Register s1, int simm13a ) {
 #ifdef _LP64
   Assembler::stx(d, s1, simm13a);
 #else
   Assembler::st( d, s1, simm13a);
 #endif
 }
 #ifdef ASSERT
 // ByteSize is only a class when ASSERT is defined, otherwise it's an int.
 inline void MacroAssembler::st_ptr( Register d, Register s1, ByteSize simm13a ) {
   st_ptr(d, s1, in_bytes(simm13a));
 }
 #endif
 inline void MacroAssembler::st_ptr( Register d, Register s1, RegisterOrConstant s2 ) {
 #ifdef _LP64
   Assembler::stx(d, s1, s2);
 #else
   Assembler::st( d, s1, s2);
 #endif
 }
 inline void MacroAssembler::st_ptr(Register d, const Address& a, int offset) {
 #ifdef _LP64
   Assembler::stx(d, a, offset);
 #else
   Assembler::st( d, a, offset);
 #endif
 }
 // Use the right loads/stores for the platform
 inline void MacroAssembler::ld_long( Register s1, Register s2, Register d ) {
 #ifdef _LP64
   Assembler::ldx(s1, s2, d);
 #else
   Assembler::ldd(s1, s2, d);
 #endif
 }
 inline void MacroAssembler::ld_long( Register s1, int simm13a, Register d ) {
 #ifdef _LP64
   Assembler::ldx(s1, simm13a, d);
 #else
   Assembler::ldd(s1, simm13a, d);
 #endif
 }
 inline void MacroAssembler::ld_long( Register s1, RegisterOrConstant s2, Register d ) {
 #ifdef _LP64
   Assembler::ldx(s1, s2, d);
 #else
   Assembler::ldd(s1, s2, d);
 #endif
 }
 inline void MacroAssembler::ld_long(const Address& a, Register d, int offset) {
 #ifdef _LP64
   Assembler::ldx(a, d, offset);
 #else
   Assembler::ldd(a, d, offset);
 #endif
 }
 inline void MacroAssembler::st_long( Register d, Register s1, Register s2 ) {
 #ifdef _LP64
   Assembler::stx(d, s1, s2);
 #else
   Assembler::std(d, s1, s2);
 #endif
 }
 inline void MacroAssembler::st_long( Register d, Register s1, int simm13a ) {
 #ifdef _LP64
   Assembler::stx(d, s1, simm13a);
 #else
   Assembler::std(d, s1, simm13a);
 #endif
 }
 inline void MacroAssembler::st_long( Register d, Register s1, RegisterOrConstant s2 ) {
 #ifdef _LP64
   Assembler::stx(d, s1, s2);
 #else
   Assembler::std(d, s1, s2);
 #endif
 }
 inline void MacroAssembler::st_long( Register d, const Address& a, int offset ) {
 #ifdef _LP64
   Assembler::stx(d, a, offset);
 #else
   Assembler::std(d, a, offset);
 #endif
 }
 // Functions for isolating 64 bit shifts for LP64
 inline void MacroAssembler::sll_ptr( Register s1, Register s2, Register d ) {
 #ifdef _LP64
   Assembler::sllx(s1, s2, d);
 #else
   Assembler::sll( s1, s2, d);
 #endif
 }
 inline void MacroAssembler::sll_ptr( Register s1, int imm6a,   Register d ) {
 #ifdef _LP64
   Assembler::sllx(s1, imm6a, d);
 #else
   Assembler::sll( s1, imm6a, d);
 #endif
 }
 inline void MacroAssembler::srl_ptr( Register s1, Register s2, Register d ) {
 #ifdef _LP64
   Assembler::srlx(s1, s2, d);
 #else
   Assembler::srl( s1, s2, d);
 #endif
 }
 inline void MacroAssembler::srl_ptr( Register s1, int imm6a,   Register d ) {
 #ifdef _LP64
   Assembler::srlx(s1, imm6a, d);
 #else
   Assembler::srl( s1, imm6a, d);
 #endif
 }
 inline void MacroAssembler::sll_ptr( Register s1, RegisterOrConstant s2, Register d ) {
   if (s2.is_register())  sll_ptr(s1, s2.as_register(), d);
   else                   sll_ptr(s1, s2.as_constant(), d);
 }
 // Use the right branch for the platform
 inline void MacroAssembler::br( Condition c, bool a, Predict p, address d, relocInfo::relocType rt ) {
   if (VM_Version::v9_instructions_work())
     Assembler::bp(c, a, icc, p, d, rt);
   else
     Assembler::br(c, a, d, rt);
 }
 inline void MacroAssembler::br( Condition c, bool a, Predict p, Label& L ) {
   br(c, a, p, target(L));
 }
 // Branch that tests either xcc or icc depending on the
 // architecture compiled (LP64 or not)
 inline void MacroAssembler::brx( Condition c, bool a, Predict p, address d, relocInfo::relocType rt ) {
 #ifdef _LP64
     Assembler::bp(c, a, xcc, p, d, rt);
 #else
     MacroAssembler::br(c, a, p, d, rt);
 #endif
 }
 inline void MacroAssembler::brx( Condition c, bool a, Predict p, Label& L ) {
   brx(c, a, p, target(L));
 }
 inline void MacroAssembler::ba( Label& L ) {
   br(always, false, pt, L);
 }
 // Warning: V9 only functions
 inline void MacroAssembler::bp( Condition c, bool a, CC cc, Predict p, address d, relocInfo::relocType rt ) {
   Assembler::bp(c, a, cc, p, d, rt);
 }
 inline void MacroAssembler::bp( Condition c, bool a, CC cc, Predict p, Label& L ) {
   Assembler::bp(c, a, cc, p, L);
 }
 inline void MacroAssembler::fb( Condition c, bool a, Predict p, address d, relocInfo::relocType rt ) {
   if (VM_Version::v9_instructions_work())
     fbp(c, a, fcc0, p, d, rt);
   else
     Assembler::fb(c, a, d, rt);
 }
 inline void MacroAssembler::fb( Condition c, bool a, Predict p, Label& L ) {
   fb(c, a, p, target(L));
 }
 inline void MacroAssembler::fbp( Condition c, bool a, CC cc, Predict p, address d, relocInfo::relocType rt ) {
   Assembler::fbp(c, a, cc, p, d, rt);
 }
 inline void MacroAssembler::fbp( Condition c, bool a, CC cc, Predict p, Label& L ) {
   Assembler::fbp(c, a, cc, p, L);
 }
 inline void MacroAssembler::jmp( Register s1, Register s2 ) { jmpl( s1, s2, G0 ); }
 inline void MacroAssembler::jmp( Register s1, int simm13a, RelocationHolder const& rspec ) { jmpl( s1, simm13a, G0, rspec); }
 inline bool MacroAssembler::is_far_target(address d) {
   if (ForceUnreachable) {
     // References outside the code cache should be treated as far
     return d < CodeCache::low_bound() || d > CodeCache::high_bound();
   }
   return !is_in_wdisp30_range(d, CodeCache::low_bound()) || !is_in_wdisp30_range(d, CodeCache::high_bound());
 }
 // Call with a check to see if we need to deal with the added
 // expense of relocation and if we overflow the displacement
 // of the quick call instruction.
 inline void MacroAssembler::call( address d, relocInfo::relocType rt ) {
 #ifdef _LP64
   intptr_t disp;
   // NULL is ok because it will be relocated later.
   // Must change NULL to a reachable address in order to
   // pass asserts here and in wdisp.
   if ( d == NULL )
     d = pc();
   // Is this address within range of the call instruction?
   // If not, use the expensive instruction sequence
   if (is_far_target(d)) {
     relocate(rt);
     AddressLiteral dest(d);
     jumpl_to(dest, O7, O7);
   } else {
     Assembler::call(d, rt);
   }
 #else
   Assembler::call( d, rt );
 #endif
 }
 inline void MacroAssembler::call( Label& L,   relocInfo::relocType rt ) {
   MacroAssembler::call( target(L), rt);
 }
 inline void MacroAssembler::callr( Register s1, Register s2 ) { jmpl( s1, s2, O7 ); }
 inline void MacroAssembler::callr( Register s1, int simm13a, RelocationHolder const& rspec ) { jmpl( s1, simm13a, O7, rspec); }
 // prefetch instruction
 inline void MacroAssembler::iprefetch( address d, relocInfo::relocType rt ) {
   if (VM_Version::v9_instructions_work())
     Assembler::bp( never, true, xcc, pt, d, rt );
 }
 inline void MacroAssembler::iprefetch( Label& L) { iprefetch( target(L) ); }
 // clobbers o7 on V8!!
 // returns delta from gotten pc to addr after
 inline int MacroAssembler::get_pc( Register d ) {
   int x = offset();
   if (VM_Version::v9_instructions_work())
     rdpc(d);
   else {
     Label lbl;
     Assembler::call(lbl, relocInfo::none);  // No relocation as this is call to pc+0x8
     if (d == O7)  delayed()->nop();
     else          delayed()->mov(O7, d);
     bind(lbl);
   }
   return offset() - x;
 }
 // Note:  All MacroAssembler::set_foo functions are defined out-of-line.
 // Loads the current PC of the following instruction as an immediate value in
 // 2 instructions.  All PCs in the CodeCache are within 2 Gig of each other.
 inline intptr_t MacroAssembler::load_pc_address( Register reg, int bytes_to_skip ) {
   intptr_t thepc = (intptr_t)pc() + 2*BytesPerInstWord + bytes_to_skip;
 #ifdef _LP64
   Unimplemented();
 #else
   Assembler::sethi(  thepc & ~0x3ff, reg, internal_word_Relocation::spec((address)thepc));
   Assembler::add(reg,thepc &  0x3ff, reg, internal_word_Relocation::spec((address)thepc));
 #endif
   return thepc;
 }
 inline void MacroAssembler::load_contents(const AddressLiteral& addrlit, Register d, int offset) {
   assert_not_delayed();
   if (ForceUnreachable) {
     patchable_sethi(addrlit, d);
   } else {
     sethi(addrlit, d);
   }
   ld(d, addrlit.low10() + offset, d);
 }
 inline void MacroAssembler::load_ptr_contents(const AddressLiteral& addrlit, Register d, int offset) {
   assert_not_delayed();
   if (ForceUnreachable) {
     patchable_sethi(addrlit, d);
   } else {
     sethi(addrlit, d);
   }
   ld_ptr(d, addrlit.low10() + offset, d);
 }
 inline void MacroAssembler::store_contents(Register s, const AddressLiteral& addrlit, Register temp, int offset) {
   assert_not_delayed();
   if (ForceUnreachable) {
     patchable_sethi(addrlit, temp);
   } else {
     sethi(addrlit, temp);
   }
   st(s, temp, addrlit.low10() + offset);
 }
 inline void MacroAssembler::store_ptr_contents(Register s, const AddressLiteral& addrlit, Register temp, int offset) {
   assert_not_delayed();
   if (ForceUnreachable) {
     patchable_sethi(addrlit, temp);
   } else {
     sethi(addrlit, temp);
   }
   st_ptr(s, temp, addrlit.low10() + offset);
 }
 // This code sequence is relocatable to any address, even on LP64.
 inline void MacroAssembler::jumpl_to(const AddressLiteral& addrlit, Register temp, Register d, int offset) {
   assert_not_delayed();
   // Force fixed length sethi because NativeJump and NativeFarCall don't handle
   // variable length instruction streams.
   patchable_sethi(addrlit, temp);
   jmpl(temp, addrlit.low10() + offset, d);
 }
 inline void MacroAssembler::jump_to(const AddressLiteral& addrlit, Register temp, int offset) {
   jumpl_to(addrlit, temp, G0, offset);
 }
 inline void MacroAssembler::jump_indirect_to(Address& a, Register temp,
                                              int ld_offset, int jmp_offset) {
   assert_not_delayed();
   //sethi(al);                   // sethi is caller responsibility for this one
   ld_ptr(a, temp, ld_offset);
   jmp(temp, jmp_offset);
 }
 inline void MacroAssembler::set_oop(jobject obj, Register d) {
   set_oop(allocate_oop_address(obj), d);
 }
 inline void MacroAssembler::set_oop_constant(jobject obj, Register d) {
   set_oop(constant_oop_address(obj), d);
 }
 inline void MacroAssembler::set_oop(const AddressLiteral& obj_addr, Register d) {
   assert(obj_addr.rspec().type() == relocInfo::oop_type, "must be an oop reloc");
   set(obj_addr, d);
 }
 inline void MacroAssembler::load_argument( Argument& a, Register  d ) {
   if (a.is_register())
     mov(a.as_register(), d);
   else
     ld (a.as_address(),  d);
 }
 inline void MacroAssembler::store_argument( Register s, Argument& a ) {
   if (a.is_register())
     mov(s, a.as_register());
   else
     st_ptr (s, a.as_address());         // ABI says everything is right justified.
 }
 inline void MacroAssembler::store_ptr_argument( Register s, Argument& a ) {
   if (a.is_register())
     mov(s, a.as_register());
   else
     st_ptr (s, a.as_address());
 }
 #ifdef _LP64
 inline void MacroAssembler::store_float_argument( FloatRegister s, Argument& a ) {
   if (a.is_float_register())
 // V9 ABI has F1, F3, F5 are used to pass instead of O0, O1, O2
     fmov(FloatRegisterImpl::S, s, a.as_float_register() );
   else
     // Floats are stored in the high half of the stack entry
     // The low half is undefined per the ABI.
     stf(FloatRegisterImpl::S, s, a.as_address(), sizeof(jfloat));
 }
 inline void MacroAssembler::store_double_argument( FloatRegister s, Argument& a ) {
   if (a.is_float_register())
 // V9 ABI has D0, D2, D4 are used to pass instead of O0, O1, O2
     fmov(FloatRegisterImpl::D, s, a.as_double_register() );
   else
     stf(FloatRegisterImpl::D, s, a.as_address());
 }
 inline void MacroAssembler::store_long_argument( Register s, Argument& a ) {
   if (a.is_register())
     mov(s, a.as_register());
   else
     stx(s, a.as_address());
 }
 #endif
 inline void MacroAssembler::clrb( Register s1, Register s2) {  stb( G0, s1, s2 ); }
 inline void MacroAssembler::clrh( Register s1, Register s2) {  sth( G0, s1, s2 ); }
 inline void MacroAssembler::clr(  Register s1, Register s2) {  stw( G0, s1, s2 ); }
 inline void MacroAssembler::clrx( Register s1, Register s2) {  stx( G0, s1, s2 ); }
 inline void MacroAssembler::clrb( Register s1, int simm13a) { stb( G0, s1, simm13a); }
 inline void MacroAssembler::clrh( Register s1, int simm13a) { sth( G0, s1, simm13a); }
 inline void MacroAssembler::clr(  Register s1, int simm13a) { stw( G0, s1, simm13a); }
 inline void MacroAssembler::clrx( Register s1, int simm13a) { stx( G0, s1, simm13a); }
 // returns if membar generates anything, obviously this code should mirror
 // membar below.
 inline bool MacroAssembler::membar_has_effect( Membar_mask_bits const7a ) {
   if( !os::is_MP() ) return false;  // Not needed on single CPU
   if( VM_Version::v9_instructions_work() ) {
     const Membar_mask_bits effective_mask =
         Membar_mask_bits(const7a & ~(LoadLoad | LoadStore | StoreStore));
     return (effective_mask != 0);
   } else {
     return true;
   }
 }
 inline void MacroAssembler::membar( Membar_mask_bits const7a ) {
   // Uniprocessors do not need memory barriers
   if (!os::is_MP()) return;
   // Weakened for current Sparcs and TSO.  See the v9 manual, sections 8.4.3,
   // 8.4.4.3, a.31 and a.50.
   if( VM_Version::v9_instructions_work() ) {
     // Under TSO, setting bit 3, 2, or 0 is redundant, so the only value
     // of the mmask subfield of const7a that does anything that isn't done
     // implicitly is StoreLoad.
     const Membar_mask_bits effective_mask =
         Membar_mask_bits(const7a & ~(LoadLoad | LoadStore | StoreStore));
     if ( effective_mask != 0 ) {
       Assembler::membar( effective_mask );
     }
   } else {
     // stbar is the closest there is on v8.  Equivalent to membar(StoreStore).  We
     // do not issue the stbar because to my knowledge all v8 machines implement TSO,
     // which guarantees that all stores behave as if an stbar were issued just after
     // each one of them.  On these machines, stbar ought to be a nop.  There doesn't
     // appear to be an equivalent of membar(StoreLoad) on v8: TSO doesn't require it,
     // it can't be specified by stbar, nor have I come up with a way to simulate it.
     //
     // Addendum.  Dave says that ldstub guarantees a write buffer flush to coherent
     // space.  Put one here to be on the safe side.
     Assembler::ldstub(SP, 0, G0);
   }
 }
 #endif // CPU_SPARC_VM_ASSEMBLER_SPARC_INLINE_HPP

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src/cpu/sparc/vm/assembler_sparc.inline.hpp@6729bbc1fcd6 (annotated)

src/cpu/sparc/vm/assembler_sparc.inline.hpp