AArch64 R+dmb.sy+rfipw-poswp-ctrlisb+QUAD "based on DMB.SYdWW Wse Rfi PosRR DpCtrlIsbdR Fre" Prefetch=0:x=F,0:y=W,1:y=F,1:x=T Com=Ws Fr { uint64_t x; uint64_t y; uint64_t 1:X2; uint64_t 1:X4; 0:X1=x; 0:X3=y; 1:X1=y; 1:X5=x; 0:X2=0x01010101; 1:X0=0x02020202; } P0 | P1 ; MOV X0,#1 | STR W0,[X1,#4] ; STR X0,[X1] | LDR X2,[X1] ; DMB SY | LDR W3,[X1,#4] ; STR W2,[X3] | CBNZ W3,LC00 ; | B END ; | LC00: ; | ISB ; | LDR X4,[X5] ; | END: ; Observed y=0x202020201010101; 1:X4=0x0; 1:X3=0x2020202; 1:X2=0x202020201010101;