S5U1C17001C ManUal
EPSOn
8-13
(C COMPilEr PaCkagE fOr S1C17 faMily) (Ver. 1.5.0)
8 aSSEMBlEr
8
Assemblr
8.6 Extended instructions
The
as
assembler supports the extended instructions explained below. Extended instructions allow an operation that
normally requires using multiple instructions including the
ext
instruction to be written in one instruction. They
are expanded into the absolutely necessary minimum basic instructions according to instruction functionality and
the operand's immediate size before assembling.
Symbols used in explanation
immX
Unsigned
X
-bit immediate
signX
Signed
X
-bit immediate
symbol
Symbol to indicate memory address
label
Jump address label
(X:Y)
Bit field from bit
X
to bit
Y
8.6.1 arithmetic Operation instructions
Types and functions of extended instructions
Extended instruction
function
Expansion
sadd %rd,
imm16
%rd
←
%rd+
imm16
(1)
sadc %rd,
imm16
%rd
←
%rd+
imm16
+C
(1)
sadd.a %rd,
imm20
%rd
←
%rd+
imm20
(2)
sadd.a %sp,
imm20
%sp
←
%sp+
imm20
(2)
ssub %rd,
imm16
%rd
←
%rd-
imm16
(1)
ssbc %rd,
imm16
%rd
←
%rd-
imm16
-C
(1)
ssub.a %rd,
imm20
%rd
←
%rd-
imm20
(2)
ssub.a %sp,
imm20
%sp
←
%sp-
imm20
(2)
xadd %rd,
imm16
%rd
←
%rd+
imm16
(1)
xadc %rd,
imm16
%rd
←
%rd+
imm16
+C
(1)
xadd.a %rd,
imm24
%rd
←
%rd+
imm24
(3)
xadd.a %sp,
imm24
%sp
←
%sp+
imm24
(3)
xsub %rd,
imm16
%rd
←
%rd-
imm16
(1)
xsbc %rd,
imm16
%rd
←
%rd-
imm16
-C
(1)
xsub.a %rd,
imm24
%rd
←
%rd-
imm24
(3)
xsub.a %sp,
imm24
%sp
←
%sp-
imm24
(3)
These extended instructions allow a 16-bit/20-bit/24-bit immediate to be specified directly in an add or subtract
operation.
A conditional operation option (
/c
, /
nc
) cannot be specified in the extended instructions.
Basic instructions after expansion
sadd
,
xadd
Expanded into the
add
instruction
sadc
,
xadc
Expanded into the
adc
instruction
sadd.a
,
xadd.a
Expanded into the
add.a
instruction
ssub
,
xsub
Expanded into the
sub
instruction
ssbc
,
xsbc
Expanded into the
sbc
instruction
ssub.a
,
xsub.a
Expanded into the
sub.a
instruction
Summary of Contents for S5U1C17001C
Page 6: ......
Page 17: ...1 General S5U1C17001C Manual 1 General ...
Page 18: ......
Page 21: ...1 2 Install S5U1C17001C Manual 2 Installation ...
Page 22: ......
Page 29: ...3 SoftDev S5U1C17001C Manual 3 Software Development Procedures ...
Page 30: ......
Page 103: ...4 SrcFiles S5U1C17001C Manual 4 Source files ...
Page 104: ......
Page 121: ...5 IDE S5U1C17001C Manual 5 gnU17 iDE ...
Page 122: ......
Page 365: ...6 Compiler S5U1C17001C Manual 6 C Compiler ...
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Page 385: ...7 Library S5U1C17001C Manual 7 library ...
Page 386: ......
Page 405: ...8 Assemblr S5U1C17001C Manual 8 assembler ...
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Page 439: ...9 Linker S5U1C17001C Manual 9 linker ...
Page 440: ......
Page 449: ...10 Debugger S5U1C17001C Manual 10 Debugger ...
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Page 626: ...11 Tools S5U1C17001C Manual 11 Other Tools ...
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Page 696: ...S1C17 Family C Compiler Package Quick Reference Reference ...