  ___ _  _ ___ ___ _  ______
 / __| || | _ \_ _| |/ /__ /
 \__ \ __ |   /| || ' < |_ \
 |___/_||_|_|_\___|_|\_\___/

~ /posts /bits /notes /sys /music /vis /archive /tl /log /about

mnemonics

stuffs that I keep forgetting

# MSR and MRS

MSR mov from reg to sys_reg, i.e. write to system register
MRS mov from sys_reg to reg, i.e. read from system register

          ________
          |      |
          v      |
MSR     SCTCR,   R1

MSR     R1,      SCTCR
          ^      |
          |______|

# LDP and STP

STP     D0, D1, [X0]

+----+ <-  X0 + 16
| D1 |
+----+ <-  X0 + 8
| D0 | 
+----+ <-  X0

instr	effect
ldp D1, D2, [x0]	D1=(x0), D2=(x0+5)
ldp D1, D2, [x0, #16]!	sets x0 = x0 + 16, then D1 = (x0), D2 =

https://diveintosystems.org/book/C9-ARM64/common.html