3581 set((-offset)+STACK_BIAS, Rscratch);
3582 st(G0, Rtsp, Rscratch);
3583 set(offset, Roffset);
3584 sub(Rsize, Roffset, Rsize);
3585 cmp(Rsize, G0);
3586 br(Assembler::greater, false, Assembler::pn, loop);
3587 delayed()->sub(Rtsp, Roffset, Rtsp);
3588
3589 // Bang down shadow pages too.
3590 // At this point, (tmp-0) is the last address touched, so don't
3591 // touch it again. (It was touched as (tmp-pagesize) but then tmp
3592 // was post-decremented.) Skip this address by starting at i=1, and
3593 // touch a few more pages below. N.B. It is important to touch all
3594 // the way down to and including i=StackShadowPages.
3595 for (int i = 1; i < StackShadowPages; i++) {
3596 set((-i*offset)+STACK_BIAS, Rscratch);
3597 st(G0, Rtsp, Rscratch);
3598 }
3599 }
3600
3601 ///////////////////////////////////////////////////////////////////////////////////
3602 #if INCLUDE_ALL_GCS
3603
3604 static address satb_log_enqueue_with_frame = NULL;
3605 static u_char* satb_log_enqueue_with_frame_end = NULL;
3606
3607 static address satb_log_enqueue_frameless = NULL;
3608 static u_char* satb_log_enqueue_frameless_end = NULL;
3609
3610 static int EnqueueCodeSize = 128 DEBUG_ONLY( + 256); // Instructions?
3611
3612 static void generate_satb_log_enqueue(bool with_frame) {
3613 BufferBlob* bb = BufferBlob::create("enqueue_with_frame", EnqueueCodeSize);
3614 CodeBuffer buf(bb);
3615 MacroAssembler masm(&buf);
3616
3617 #define __ masm.
3618
3619 address start = __ pc();
3620 Register pre_val;
|
3581 set((-offset)+STACK_BIAS, Rscratch);
3582 st(G0, Rtsp, Rscratch);
3583 set(offset, Roffset);
3584 sub(Rsize, Roffset, Rsize);
3585 cmp(Rsize, G0);
3586 br(Assembler::greater, false, Assembler::pn, loop);
3587 delayed()->sub(Rtsp, Roffset, Rtsp);
3588
3589 // Bang down shadow pages too.
3590 // At this point, (tmp-0) is the last address touched, so don't
3591 // touch it again. (It was touched as (tmp-pagesize) but then tmp
3592 // was post-decremented.) Skip this address by starting at i=1, and
3593 // touch a few more pages below. N.B. It is important to touch all
3594 // the way down to and including i=StackShadowPages.
3595 for (int i = 1; i < StackShadowPages; i++) {
3596 set((-i*offset)+STACK_BIAS, Rscratch);
3597 st(G0, Rtsp, Rscratch);
3598 }
3599 }
3600
3601 void MacroAssembler::reserved_stack_check() {
3602 // testing if reserved zone needs to be enabled
3603 Label no_reserved_zone_enabling;
3604
3605 ld_ptr(G2_thread, JavaThread::reserved_stack_activation_offset(), G4_scratch);
3606 cmp_and_brx_short(SP, G4_scratch, Assembler::lessUnsigned, Assembler::pt, no_reserved_zone_enabling);
3607
3608 call_VM_leaf(L0, CAST_FROM_FN_PTR(address, SharedRuntime::enable_stack_reserved_zone), G2_thread);
3609
3610 AddressLiteral stub(StubRoutines::throw_delayed_StackOverflowError_entry());
3611 jump_to(stub, G4_scratch);
3612 delayed()->restore();
3613
3614 should_not_reach_here();
3615
3616 bind(no_reserved_zone_enabling);
3617 }
3618
3619 ///////////////////////////////////////////////////////////////////////////////////
3620 #if INCLUDE_ALL_GCS
3621
3622 static address satb_log_enqueue_with_frame = NULL;
3623 static u_char* satb_log_enqueue_with_frame_end = NULL;
3624
3625 static address satb_log_enqueue_frameless = NULL;
3626 static u_char* satb_log_enqueue_frameless_end = NULL;
3627
3628 static int EnqueueCodeSize = 128 DEBUG_ONLY( + 256); // Instructions?
3629
3630 static void generate_satb_log_enqueue(bool with_frame) {
3631 BufferBlob* bb = BufferBlob::create("enqueue_with_frame", EnqueueCodeSize);
3632 CodeBuffer buf(bb);
3633 MacroAssembler masm(&buf);
3634
3635 #define __ masm.
3636
3637 address start = __ pc();
3638 Register pre_val;
|