Epson S5U1C17001C, Manual

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S5U1C17001C ManUal
EPSOn
8-15
(C COMPilEr PaCkagE fOr S1C17 faMily) (Ver. 1.5.0)
8 aSSEMBlEr
8
Assemblr
8.6.2 Comparison instructions
Types and functions of extended instructions
Extended instruction function Expansion
scmp %rd, imm16 %rd- imm16 (Sets/resets C, V, Z and N flags in PSR) (1)
scmc %rd, imm16 %rd- imm16 -C (Sets/resets C, V, Z and N flags in PSR) (1)
scmp.a %rd, imm20 %rd- imm20
(Sets/resets C, V, Z and N flags in PSR) (2)
xcmp %rd, imm16 %rd- imm16 (Sets/resets C, V, Z and N flags in PSR) (1)
xcmc %rd, imm16 %rd- imm16 -C (Sets/resets C, V, Z and N flags in PSR) (1)
xcmp.a %rd, imm24 %rd- imm24 (Sets/resets C, V, Z and N flags in PSR) (3)
These extended instructions allow you to compare a general-purpose register and a 16-bit/20-bit/24-bit
immediate.
A conditional operation option (
/c
,
/nc
) cannot be specified in the extended instructions.
Basic instructions after expansion
scmp
,
xcmp
Expanded into the
cmp
instruction
scmc
,
xcmc
Expanded into the
cmc
instruction
scmp.a
,
xcmp.a
Expanded into the
cmp.a
instruction
Expansion formats
(1)
s OP %rd, imm16
/
x OP %rd, imm16
(
OP
=
cmp
,
cmc
)
Example:
xcmp %rd, imm16
imm16
≤
0x7f 0x7f <
imm16
cmp %rd, imm16 (6:0) ext imm16 (15:7)
cmp %rd, imm16 (6:0)
(2)
scmp.a %rd, imm20
imm20
≤
0x7f 0x7f < imm20
cmp.a %rd, imm20 (6:0) ext imm20 (19:7)
cmp.a %rd, imm20 (6:0)
(3)
xcmp.a %rd, imm24
imm24
≤
0x7f 0x7f < imm24
≤
0xfffff 0xfffff < imm24
cmp.a %rd, imm24 (6:0) ext imm24 (19:7)
cmp.a %rd, imm24 (6:0)
ext imm24 (23:20)
ext imm24 (19:7)
cmp.a %rd, imm24 (6:0)