V850ESLASHMA3 datasheet(63/226 Pages) NEC

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CHAPTER 5 INSTRUCTIONS

User’s Manual U14559EJ3V1UM

Conditional move

CMOV

Conditional Move

Instruction format

(1) CMOV cccc, reg1, reg2, reg3

(2) CMOV cccc, imm5, reg2, reg3

Operation

(1) if conditions are satisfied

then GR [reg3]

← GR [reg1]

else GR [reg3]

← GR [reg2]

(2) if conditions are satisfied

then GR [reg3]

← sign-extend (imm5)

else GR [reg3]

← GR [reg2]

Format

(1) Format XI

(2) Format XII

Opcode

(1)

rrrrr111111RRRRR

wwwww011001cccc0

(2)

rrrrr111111iiiii

wwwww011000cccc0

Flag

–

SAT

–

Explanation

(1) The data of general-purpose register reg1 is transferred to general-purpose register reg3 if

the condition specified by condition code “cccc” is satisfied; otherwise, the data of general-

purpose register reg2 is transferred to general-purpose register reg3. One of the codes

shown in Table 5-5 Condition Codes should be specified as the condition code “cccc”.

(2) The data of 5-bit immediate, sign-extended to word length, is transferred to general-

purpose register reg3 if the condition specified by condition code “cccc” is satisfied;

otherwise, the data of general-purpose register reg2 is transferred to general-purpose

as the condition code “cccc”.

Remark

See SETF instruction.

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