
7 DETAILS OF INSTRUCTIONS
166
EPSON
S1C33 FAMILY C33 PE CORE MANUAL
swaph %rd, %rs
Function
Swap
Standard) rd(31:24)
← rs(23:16), rd(23:16) ← rs(31:24), rd(15:8) ← rs(7:0), rd(7:0) ← rs(15:8)
Extension 1) Unusable
Extension 2) Unusable
Code
15 12 11 8 7 4 3 0
1 0 0 1 1 0 1 0
r s r d
0x9A__
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Flag
IE C V Z N
– – – – –
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Mode
Src: Register direct %rs = %r0 to %r15
Dst: Register direct
%rd = %r0 to %r15
CLK
One cycle
Description
(1) Standard
Converts the 32-bit data in a general-purpose register between big and little endians at halfword
boundaries.
8 716 1524 23
Byte 0
Byte 1
Byte 2
Byte 3
0
rs register
31
8 7
16 1524 23
Byte 1
Byte 0
Byte 3
Byte 2
0
rd register
31
(2) Delayed instruction
This instruction may be executed as a delayed instruction by writing it directly after a branch
instruction with the “d” bit.
Example
When r1 = 0x12345678
swaph %r2,%r1 ; 0x34127856 → r2
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