Xext Instructions - Epson S5U1C17001C Manual

8.6.9 Xext instructions

Types and functions of extended instruction
Extended instruction
Xext imm24
Combined with the instructions below, this instruction functions as the offset.
Xext imm24
OP [%rd], %rs
Xext imm24
OP %rd, [%rs]
（OP = ld.b, ld.ub, ld, ld.a）
Basic instructions after expansion
Xext
Expansion formats
（1） Xext
imm24
imm24 ≤ 0x1fff
ext imm20(12:0)
S5U1C17001C ManUal
(C COMPilEr PaCkagE fOr S1C17 faMily) (Ver. 1.5.0)
Expanded into the ext instruction
==> [%rd+imm24] ← Functions as %rs
==> %rd ← Functions as [%rs+imm24]
Expanded into the ext instruction
0x1fff < imm24 ≤ 0xffffff
ext imm24(23:13)
ext imm24(12:0)
EPSOn
function
8 aSSEMBlEr
Expansion
（1）
8
Assemblr
8-25