V850ESLASHME2 datasheet(69/226 Pages) NEC

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CHAPTER 5 INSTRUCTIONS

User’s Manual U14559EJ3V1UM

Function dispose

DISPOSE

Function Dispose

Instruction format

(1) DISPOSE imm5, list12

(2) DISPOSE imm5, list12, [reg1]

Operation

(1) sp

← sp + zero-extend (imm5 logically shift left by 2)

GR [reg in list12]

← Load-memory (sp, Word)

← sp + 4

repeat 2 steps above until all regs in list12 are loaded

(2) sp

← sp + zero-extend (imm5 logically shift left by 2)

GR [reg in list12]

← Load-memory (sp, Word)

← sp + 4

repeat 2 states above until all regs in list12 are loaded

← GR [reg1]

Format

Format XIII

Opcode

(1)

0000011001iiiiiL

LLLLLLLLLLL00000

(2)

0000011001iiiiiL

LLLLLLLLLLLRRRRR

RRRRR must not be 00000.

LLLLLLLLLLLL indicates the bit value corresponding to the register list (list12) (for

example, “L” of bit 21 in an opcode indicates the value of bit 21 of list12). list12 is a 32-bit

20 … 1

r24

r25

r26

r27

r20

r21

r22

r23

r28

r29

r31

−

r30

Bits 31 to 21 and bit 0 correspond to each bit of the general-purpose registers (r21 to r31).

The register corresponding to the set bit (1) is specified as the manipulation target. For

example, when r20 and r30 are specified, list12 values are as follows (the set values of bits

20 to 1 to which registers do not correspond can be 0 or 1 (don’t care)).

• If the values of all the bits to which registers do not correspond are set to 0: 08000001H

• If the values of all the bits to which registers do not correspond are set to 1: 081FFFFFH

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