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src/cpu/aarch64/vm/c1_Runtime1_aarch64.cpp
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@@ -170,35 +170,36 @@
void load_argument(int offset_in_words, Register reg);
~StubFrame();
};;
+void StubAssembler::prologue(const char* name, bool must_gc_arguments) {
+ set_info(name, must_gc_arguments);
+ enter();
+}
+
+void StubAssembler::epilogue() {
+ leave();
+ ret(lr);
+}
#define __ _sasm->
StubFrame::StubFrame(StubAssembler* sasm, const char* name, bool must_gc_arguments) {
_sasm = sasm;
- __ set_info(name, must_gc_arguments);
- __ enter();
+ __ prologue(name, must_gc_arguments);
}
// load parameters that were stored with LIR_Assembler::store_parameter
// Note: offsets for store_parameter and load_argument must match
void StubFrame::load_argument(int offset_in_words, Register reg) {
- // rbp, + 0: link
- // + 1: return address
- // + 2: argument with offset 0
- // + 3: argument with offset 1
- // + 4: ...
-
- __ ldr(reg, Address(rfp, (offset_in_words + 2) * BytesPerWord));
+ __ load_parameter(offset_in_words, reg);
}
StubFrame::~StubFrame() {
- __ leave();
- __ ret(lr);
+ __ epilogue();
}
#undef __
@@ -1150,143 +1151,10 @@
// + 1: return address
oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), true);
}
break;
-#if INCLUDE_ALL_GCS
-
- case g1_pre_barrier_slow_id:
- {
- StubFrame f(sasm, "g1_pre_barrier", dont_gc_arguments);
- // arg0 : previous value of memory
-
- BarrierSet* bs = Universe::heap()->barrier_set();
- if (bs->kind() != BarrierSet::G1BarrierSet) {
- __ mov(r0, (int)id);
- __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), r0);
- __ should_not_reach_here();
- break;
- }
-
- const Register pre_val = r0;
- const Register thread = rthread;
- const Register tmp = rscratch1;
-
- Address in_progress(thread, in_bytes(JavaThread::satb_mark_queue_offset() +
- SATBMarkQueue::byte_offset_of_active()));
-
- Address queue_index(thread, in_bytes(JavaThread::satb_mark_queue_offset() +
- SATBMarkQueue::byte_offset_of_index()));
- Address buffer(thread, in_bytes(JavaThread::satb_mark_queue_offset() +
- SATBMarkQueue::byte_offset_of_buf()));
-
- Label done;
- Label runtime;
-
- // Is marking still active?
- if (in_bytes(SATBMarkQueue::byte_width_of_active()) == 4) {
- __ ldrw(tmp, in_progress);
- } else {
- assert(in_bytes(SATBMarkQueue::byte_width_of_active()) == 1, "Assumption");
- __ ldrb(tmp, in_progress);
- }
- __ cbzw(tmp, done);
-
- // Can we store original value in the thread's buffer?
- __ ldr(tmp, queue_index);
- __ cbz(tmp, runtime);
-
- __ sub(tmp, tmp, wordSize);
- __ str(tmp, queue_index);
- __ ldr(rscratch2, buffer);
- __ add(tmp, tmp, rscratch2);
- f.load_argument(0, rscratch2);
- __ str(rscratch2, Address(tmp, 0));
- __ b(done);
-
- __ bind(runtime);
- __ push_call_clobbered_registers();
- f.load_argument(0, pre_val);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), pre_val, thread);
- __ pop_call_clobbered_registers();
- __ bind(done);
- }
- break;
- case g1_post_barrier_slow_id:
- {
- StubFrame f(sasm, "g1_post_barrier", dont_gc_arguments);
-
- // arg0: store_address
- Address store_addr(rfp, 2*BytesPerWord);
-
- BarrierSet* bs = Universe::heap()->barrier_set();
- CardTableModRefBS* ctbs = barrier_set_cast<CardTableModRefBS>(bs);
- CardTable* ct = ctbs->card_table();
- assert(sizeof(*ct->byte_map_base()) == sizeof(jbyte), "adjust this code");
-
- Label done;
- Label runtime;
-
- // At this point we know new_value is non-NULL and the new_value crosses regions.
- // Must check to see if card is already dirty
-
- const Register thread = rthread;
-
- Address queue_index(thread, in_bytes(JavaThread::dirty_card_queue_offset() +
- DirtyCardQueue::byte_offset_of_index()));
- Address buffer(thread, in_bytes(JavaThread::dirty_card_queue_offset() +
- DirtyCardQueue::byte_offset_of_buf()));
-
- const Register card_offset = rscratch2;
- // LR is free here, so we can use it to hold the byte_map_base.
- const Register byte_map_base = lr;
-
- assert_different_registers(card_offset, byte_map_base, rscratch1);
-
- f.load_argument(0, card_offset);
- __ lsr(card_offset, card_offset, CardTable::card_shift);
- __ load_byte_map_base(byte_map_base);
- __ ldrb(rscratch1, Address(byte_map_base, card_offset));
- __ cmpw(rscratch1, (int)G1CardTable::g1_young_card_val());
- __ br(Assembler::EQ, done);
-
- assert((int)CardTable::dirty_card_val() == 0, "must be 0");
-
- __ membar(Assembler::StoreLoad);
- __ ldrb(rscratch1, Address(byte_map_base, card_offset));
- __ cbzw(rscratch1, done);
-
- // storing region crossing non-NULL, card is clean.
- // dirty card and log.
- __ strb(zr, Address(byte_map_base, card_offset));
-
- // Convert card offset into an address in card_addr
- Register card_addr = card_offset;
- __ add(card_addr, byte_map_base, card_addr);
-
- __ ldr(rscratch1, queue_index);
- __ cbz(rscratch1, runtime);
- __ sub(rscratch1, rscratch1, wordSize);
- __ str(rscratch1, queue_index);
-
- // Reuse LR to hold buffer_addr
- const Register buffer_addr = lr;
-
- __ ldr(buffer_addr, buffer);
- __ str(card_addr, Address(buffer_addr, rscratch1));
- __ b(done);
-
- __ bind(runtime);
- __ push_call_clobbered_registers();
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_post), card_addr, thread);
- __ pop_call_clobbered_registers();
- __ bind(done);
-
- }
- break;
-#endif
-
case predicate_failed_trap_id:
{
StubFrame f(sasm, "predicate_failed_trap", dont_gc_arguments);
OopMap* map = save_live_registers(sasm);
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