Extended Instructions - Epson S5U1C17001C Manual

Cmos 16-bit single chip microcomputer, c compiler package for s1c17 family

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4.3.3 Extended instructions

The extended instructions are such that the contents which normally are written in multiple instructions including

the ext instruction can be written in one instruction. Extended instructions are expanded into the smallest possible

basic instructions by the as assembler.

Types of extended instructions

Method for using extended instructions

The value or symbol for the expanded immediate size can be written directly in the operand.

Examples: xcall

In addition to the immediate expansion function of the basic instructions, a special operand specification like

the one shown below is accepted for some instructions.

Examples: xld.a

%r0,symbol + 0x10

For details about the extended instructions that include operands, refer to Section 8.6, "Extended Instructions".

S5U1C17001C ManUal

(C COMPilEr PaCkagE fOr S1C17 faMily) (Ver. 1.5.0)

LABEL[23:10]

%r1,imm16[6:0]

imm24[23:20]

%r1,imm24[6:0]

; R0 ← symbol + 0x10

; Jumps to address LABEL + 5.

4 SOUrCE filES

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