--- a/src/hotspot/cpu/ppc/gc/g1/g1BarrierSetAssembler_ppc.cpp	Thu Apr 26 12:48:35 2018 -0700
+++ b/src/hotspot/cpu/ppc/gc/g1/g1BarrierSetAssembler_ppc.cpp	Thu Apr 26 20:42:43 2018 +0200
@@ -26,12 +26,17 @@
 #include "precompiled.hpp"
 #include "asm/macroAssembler.inline.hpp"
 #include "gc/g1/g1BarrierSet.hpp"
+#include "gc/g1/g1BarrierSetAssembler.hpp"
 #include "gc/g1/g1CardTable.hpp"
-#include "gc/g1/g1BarrierSetAssembler.hpp"
 #include "gc/g1/g1ThreadLocalData.hpp"
 #include "gc/g1/heapRegion.hpp"
 #include "interpreter/interp_masm.hpp"
 #include "runtime/sharedRuntime.hpp"
+#ifdef COMPILER1
+#include "c1/c1_LIRAssembler.hpp"
+#include "c1/c1_MacroAssembler.hpp"
+#include "gc/g1/c1/g1BarrierSetC1.hpp"
+#endif
 
 #define __ masm->
 
@@ -339,4 +344,209 @@
   __ bind(done);
 }
 
+#ifdef COMPILER1
+
 #undef __
+#define __ ce->masm()->
+
+void G1BarrierSetAssembler::gen_pre_barrier_stub(LIR_Assembler* ce, G1PreBarrierStub* stub) {
+  G1BarrierSetC1* bs = (G1BarrierSetC1*)BarrierSet::barrier_set()->barrier_set_c1();
+  // At this point we know that marking is in progress.
+  // If do_load() is true then we have to emit the
+  // load of the previous value; otherwise it has already
+  // been loaded into _pre_val.
+
+  __ bind(*stub->entry());
+
+  assert(stub->pre_val()->is_register(), "Precondition.");
+  Register pre_val_reg = stub->pre_val()->as_register();
+
+  if (stub->do_load()) {
+    ce->mem2reg(stub->addr(), stub->pre_val(), T_OBJECT, stub->patch_code(), stub->info(), false /*wide*/, false /*unaligned*/);
+  }
+
+  __ cmpdi(CCR0, pre_val_reg, 0);
+  __ bc_far_optimized(Assembler::bcondCRbiIs1, __ bi0(CCR0, Assembler::equal), *stub->continuation());
+
+  address c_code = bs->pre_barrier_c1_runtime_code_blob()->code_begin();
+  //__ load_const_optimized(R0, c_code);
+  __ add_const_optimized(R0, R29_TOC, MacroAssembler::offset_to_global_toc(c_code));
+  __ std(pre_val_reg, -8, R1_SP); // Pass pre_val on stack.
+  __ mtctr(R0);
+  __ bctrl();
+  __ b(*stub->continuation());
+}
+
+void G1BarrierSetAssembler::gen_post_barrier_stub(LIR_Assembler* ce, G1PostBarrierStub* stub) {
+  G1BarrierSetC1* bs = (G1BarrierSetC1*)BarrierSet::barrier_set()->barrier_set_c1();
+  __ bind(*stub->entry());
+
+  assert(stub->addr()->is_register(), "Precondition.");
+  assert(stub->new_val()->is_register(), "Precondition.");
+  Register addr_reg = stub->addr()->as_pointer_register();
+  Register new_val_reg = stub->new_val()->as_register();
+
+  __ cmpdi(CCR0, new_val_reg, 0);
+  __ bc_far_optimized(Assembler::bcondCRbiIs1, __ bi0(CCR0, Assembler::equal), *stub->continuation());
+
+  address c_code = bs->post_barrier_c1_runtime_code_blob()->code_begin();
+  //__ load_const_optimized(R0, c_code);
+  __ add_const_optimized(R0, R29_TOC, MacroAssembler::offset_to_global_toc(c_code));
+  __ mtctr(R0);
+  __ mr(R0, addr_reg); // Pass addr in R0.
+  __ bctrl();
+  __ b(*stub->continuation());
+}
+
+#undef __
+#define __ sasm->
+
+void G1BarrierSetAssembler::generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm) {
+  BarrierSet* bs = BarrierSet::barrier_set();
+
+  __ set_info("g1_pre_barrier_slow_id", false);
+
+  // Using stack slots: pre_val (pre-pushed), spill tmp, spill tmp2.
+  const int stack_slots = 3;
+  Register pre_val = R0; // previous value of memory
+  Register tmp  = R14;
+  Register tmp2 = R15;
+
+  Label refill, restart, marking_not_active;
+  int satb_q_active_byte_offset = in_bytes(G1ThreadLocalData::satb_mark_queue_active_offset());
+  int satb_q_index_byte_offset = in_bytes(G1ThreadLocalData::satb_mark_queue_index_offset());
+  int satb_q_buf_byte_offset = in_bytes(G1ThreadLocalData::satb_mark_queue_buffer_offset());
+
+  // Spill
+  __ std(tmp, -16, R1_SP);
+  __ std(tmp2, -24, R1_SP);
+
+  // Is marking still active?
+  if (in_bytes(SATBMarkQueue::byte_width_of_active()) == 4) {
+    __ lwz(tmp, satb_q_active_byte_offset, R16_thread);
+  } else {
+    assert(in_bytes(SATBMarkQueue::byte_width_of_active()) == 1, "Assumption");
+    __ lbz(tmp, satb_q_active_byte_offset, R16_thread);
+  }
+  __ cmpdi(CCR0, tmp, 0);
+  __ beq(CCR0, marking_not_active);
+
+  __ bind(restart);
+  // Load the index into the SATB buffer. SATBMarkQueue::_index is a
+  // size_t so ld_ptr is appropriate.
+  __ ld(tmp, satb_q_index_byte_offset, R16_thread);
+
+  // index == 0?
+  __ cmpdi(CCR0, tmp, 0);
+  __ beq(CCR0, refill);
+
+  __ ld(tmp2, satb_q_buf_byte_offset, R16_thread);
+  __ ld(pre_val, -8, R1_SP); // Load from stack.
+  __ addi(tmp, tmp, -oopSize);
+
+  __ std(tmp, satb_q_index_byte_offset, R16_thread);
+  __ stdx(pre_val, tmp2, tmp); // [_buf + index] := <address_of_card>
+
+  __ bind(marking_not_active);
+  // Restore temp registers and return-from-leaf.
+  __ ld(tmp2, -24, R1_SP);
+  __ ld(tmp, -16, R1_SP);
+  __ blr();
+
+  __ bind(refill);
+  const int nbytes_save = (MacroAssembler::num_volatile_regs + stack_slots) * BytesPerWord;
+  __ save_volatile_gprs(R1_SP, -nbytes_save); // except R0
+  __ mflr(R0);
+  __ std(R0, _abi(lr), R1_SP);
+  __ push_frame_reg_args(nbytes_save, R0); // dummy frame for C call
+  __ call_VM_leaf(CAST_FROM_FN_PTR(address, SATBMarkQueueSet::handle_zero_index_for_thread), R16_thread);
+  __ pop_frame();
+  __ ld(R0, _abi(lr), R1_SP);
+  __ mtlr(R0);
+  __ restore_volatile_gprs(R1_SP, -nbytes_save); // except R0
+  __ b(restart);
+}
+
+void G1BarrierSetAssembler::generate_c1_post_barrier_runtime_stub(StubAssembler* sasm) {
+  G1BarrierSet* bs = barrier_set_cast<G1BarrierSet>(BarrierSet::barrier_set());
+
+  __ set_info("g1_post_barrier_slow_id", false);
+
+  // Using stack slots: spill addr, spill tmp2
+  const int stack_slots = 2;
+  Register tmp = R0;
+  Register addr = R14;
+  Register tmp2 = R15;
+  jbyte* byte_map_base = bs->card_table()->byte_map_base();
+
+  Label restart, refill, ret;
+
+  // Spill
+  __ std(addr, -8, R1_SP);
+  __ std(tmp2, -16, R1_SP);
+
+  __ srdi(addr, R0, CardTable::card_shift); // Addr is passed in R0.
+  __ load_const_optimized(/*cardtable*/ tmp2, byte_map_base, tmp);
+  __ add(addr, tmp2, addr);
+  __ lbz(tmp, 0, addr); // tmp := [addr + cardtable]
+
+  // Return if young card.
+  __ cmpwi(CCR0, tmp, G1CardTable::g1_young_card_val());
+  __ beq(CCR0, ret);
+
+  // Return if sequential consistent value is already dirty.
+  __ membar(Assembler::StoreLoad);
+  __ lbz(tmp, 0, addr); // tmp := [addr + cardtable]
+
+  __ cmpwi(CCR0, tmp, G1CardTable::dirty_card_val());
+  __ beq(CCR0, ret);
+
+  // Not dirty.
+
+  // First, dirty it.
+  __ li(tmp, G1CardTable::dirty_card_val());
+  __ stb(tmp, 0, addr);
+
+  int dirty_card_q_index_byte_offset = in_bytes(G1ThreadLocalData::dirty_card_queue_index_offset());
+  int dirty_card_q_buf_byte_offset = in_bytes(G1ThreadLocalData::dirty_card_queue_buffer_offset());
+
+  __ bind(restart);
+
+  // Get the index into the update buffer. DirtyCardQueue::_index is
+  // a size_t so ld_ptr is appropriate here.
+  __ ld(tmp2, dirty_card_q_index_byte_offset, R16_thread);
+
+  // index == 0?
+  __ cmpdi(CCR0, tmp2, 0);
+  __ beq(CCR0, refill);
+
+  __ ld(tmp, dirty_card_q_buf_byte_offset, R16_thread);
+  __ addi(tmp2, tmp2, -oopSize);
+
+  __ std(tmp2, dirty_card_q_index_byte_offset, R16_thread);
+  __ add(tmp2, tmp, tmp2);
+  __ std(addr, 0, tmp2); // [_buf + index] := <address_of_card>
+
+  // Restore temp registers and return-from-leaf.
+  __ bind(ret);
+  __ ld(tmp2, -16, R1_SP);
+  __ ld(addr, -8, R1_SP);
+  __ blr();
+
+  __ bind(refill);
+  const int nbytes_save = (MacroAssembler::num_volatile_regs + stack_slots) * BytesPerWord;
+  __ save_volatile_gprs(R1_SP, -nbytes_save); // except R0
+  __ mflr(R0);
+  __ std(R0, _abi(lr), R1_SP);
+  __ push_frame_reg_args(nbytes_save, R0); // dummy frame for C call
+  __ call_VM_leaf(CAST_FROM_FN_PTR(address, DirtyCardQueueSet::handle_zero_index_for_thread), R16_thread);
+  __ pop_frame();
+  __ ld(R0, _abi(lr), R1_SP);
+  __ mtlr(R0);
+  __ restore_volatile_gprs(R1_SP, -nbytes_save); // except R0
+  __ b(restart);
+}
+
+#undef __
+
+#endif // COMPILER1