4045 mov(rscratch1, matrix->stride_jint());
4046 // Address is _matrix[to * stride + from]
4047 madd(tmp, tmp, rscratch1, tmp2);
4048 mov(rscratch1, matrix->magic_offset());
4049 Address loc(tmp, rscratch1);
4050
4051 ldrb(tmp2, loc);
4052 cbnz(tmp2, done);
4053 mov(tmp2, 1);
4054 strb(tmp2, loc);
4055 bind(done);
4056 }
4057
4058 void MacroAssembler::keep_alive_barrier(Register val,
4059 Register thread,
4060 Register tmp) {
4061
4062 if (UseG1GC) {
4063 // Generate the G1 pre-barrier code to log the value of
4064 // the referent field in an SATB buffer.
4065 enter(); // g1_write may call runtime
4066 g1_write_barrier_pre(noreg,
4067 val /* pre_val */,
4068 thread /* thread */,
4069 tmp,
4070 true /* tosca_live */,
4071 true /* expand_call */);
4072 leave();
4073 } else if (UseShenandoahGC && ShenandoahKeepAliveBarrier) {
4074 shenandoah_write_barrier_pre(noreg,
4075 val /* pre_val */,
4076 thread /* thread */,
4077 tmp,
4078 true /* tosca_live */,
4079 true /* expand_call */);
4080 }
4081 }
4082
4083 void MacroAssembler::shenandoah_write_barrier(Register dst) {
4084 assert(UseShenandoahGC && (ShenandoahWriteBarrier || ShenandoahStoreValWriteBarrier), "Should be enabled");
4085 assert(dst != rscratch1, "need rscratch1");
4086 assert(dst != rscratch2, "need rscratch2");
4087
4088 Label done;
4089
4090 // Check for evacuation-in-progress
4091 Address evacuation_in_progress = Address(rthread, in_bytes(JavaThread::evacuation_in_progress_offset()));
4092 ldrb(rscratch1, evacuation_in_progress);
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4045 mov(rscratch1, matrix->stride_jint());
4046 // Address is _matrix[to * stride + from]
4047 madd(tmp, tmp, rscratch1, tmp2);
4048 mov(rscratch1, matrix->magic_offset());
4049 Address loc(tmp, rscratch1);
4050
4051 ldrb(tmp2, loc);
4052 cbnz(tmp2, done);
4053 mov(tmp2, 1);
4054 strb(tmp2, loc);
4055 bind(done);
4056 }
4057
4058 void MacroAssembler::keep_alive_barrier(Register val,
4059 Register thread,
4060 Register tmp) {
4061
4062 if (UseG1GC) {
4063 // Generate the G1 pre-barrier code to log the value of
4064 // the referent field in an SATB buffer.
4065 g1_write_barrier_pre(noreg,
4066 val /* pre_val */,
4067 thread /* thread */,
4068 tmp,
4069 true /* tosca_live */,
4070 true /* expand_call */);
4071 } else if (UseShenandoahGC && ShenandoahKeepAliveBarrier) {
4072 shenandoah_write_barrier_pre(noreg,
4073 val /* pre_val */,
4074 thread /* thread */,
4075 tmp,
4076 true /* tosca_live */,
4077 true /* expand_call */);
4078 }
4079 }
4080
4081 void MacroAssembler::shenandoah_write_barrier(Register dst) {
4082 assert(UseShenandoahGC && (ShenandoahWriteBarrier || ShenandoahStoreValWriteBarrier), "Should be enabled");
4083 assert(dst != rscratch1, "need rscratch1");
4084 assert(dst != rscratch2, "need rscratch2");
4085
4086 Label done;
4087
4088 // Check for evacuation-in-progress
4089 Address evacuation_in_progress = Address(rthread, in_bytes(JavaThread::evacuation_in_progress_offset()));
4090 ldrb(rscratch1, evacuation_in_progress);
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