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*
*/
#include "precompiled.hpp"
#include "asm/macroAssembler.inline.hpp"
+ #if INCLUDE_CDS
+ #include "code/SCCache.hpp"
+ #endif
#include "gc/g1/g1BarrierSet.hpp"
#include "gc/g1/g1BarrierSetAssembler.hpp"
#include "gc/g1/g1BarrierSetRuntime.hpp"
#include "gc/g1/g1CardTable.hpp"
#include "gc/g1/g1HeapRegion.hpp"
Label done;
Label runtime;
// Does store cross heap regions?
! __ eor(tmp1, store_addr, new_val);
! __ lsr(tmp1, tmp1, G1HeapRegion::LogOfHRGrainBytes);
! __ cbz(tmp1, done);
!
// crosses regions, storing null?
__ cbz(new_val, done);
// storing region crossing non-null, is card already dirty?
const Register card_addr = tmp1;
! __ lsr(card_addr, store_addr, CardTable::card_shift());
// get the address of the card
__ load_byte_map_base(tmp2);
__ add(card_addr, card_addr, tmp2);
__ ldrb(tmp2, Address(card_addr));
Label done;
Label runtime;
// Does store cross heap regions?
! #if INCLUDE_CDS
! // AOT code needs to load the barrier grain shift from the aot
! // runtime constants area in the code cache otherwise we can compile
! // it as an immediate operand
+ if (SCCache::is_on_for_write()) {
+ address grain_shift_address = (address)AOTRuntimeConstants::grain_shift_address();
+ __ eor(tmp1, store_addr, new_val);
+ __ lea(tmp2, ExternalAddress(grain_shift_address));
+ __ ldrb(tmp2, tmp2);
+ __ lsrv(tmp1, tmp1, tmp2);
+ __ cbz(tmp1, done);
+ } else
+ #endif
+ {
+ __ eor(tmp1, store_addr, new_val);
+ __ lsr(tmp1, tmp1, G1HeapRegion::LogOfHRGrainBytes);
+ __ cbz(tmp1, done);
+ }
// crosses regions, storing null?
__ cbz(new_val, done);
// storing region crossing non-null, is card already dirty?
const Register card_addr = tmp1;
! #if INCLUDE_CDS
+ // AOT code needs to load the barrier card shift from the aot
+ // runtime constants area in the code cache otherwise we can compile
+ // it as an immediate operand
+ if (SCCache::is_on_for_write()) {
+ address card_shift_address = (address)AOTRuntimeConstants::card_shift_address();
+ __ lea(tmp2, ExternalAddress(card_shift_address));
+ __ ldrb(tmp2, tmp2);
+ __ lsrv(card_addr, store_addr, tmp2);
+ } else
+ #endif
+ {
+ __ lsr(card_addr, store_addr, CardTable::card_shift());
+ }
// get the address of the card
__ load_byte_map_base(tmp2);
__ add(card_addr, card_addr, tmp2);
__ ldrb(tmp2, Address(card_addr));
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