ARM Instruction Reference
4-20
Copyright © 2000, 2001 ARM Limited. All rights reserved.
ARM DUI 0068B
4.2.5
PLD
Cache preload.
Syntax
PLD [
Rn
{,
FlexOffset
}]
where:
Rn
is the register on which the memory address is based.
FlexOffset
is an optional flexible offset applied to the value in
Rn
.
FlexOffset
can be either of the following:
#
expr
{-}
Rm
{,
shift
}
where:
-
is an optional minus sign. If
-
is present, the offset is subtracted
from
Rn
. Otherwise, the offset is added to
Rn
.
expr
is an expression evaluating to an integer in the range –4095 to
+4095. This is often a numeric constant.
Rm
is a register containing a value to be used as the offset.
shift
is an optional shift to be applied to
Rm
. It can be any one of:
ASR
n
arithmetic shift right
n
bits. 1
≤
n
≤
32.
LSL
n
logical shift left
n
bits. 0
≤
n
≤
31.
LSR
n
logical shift right
n
bits. 1
≤
n
≤
32.
ROR
n
rotate right
n
bits. 1
≤
n
≤
31.
RRX
rotate right one bit, with extend.
This is the same offset syntax as for
LDR and STR, words and unsigned
bytes
on page 4-7.