fmov

Floating-Point Move (Immediate)

FMOV <Hd|Sd|Dd>, #<fimm>

Moves a floating-point immediate into a scalar register.

Pseudocode Operation

Vd ← decode_fp_immediate(imm8, type)

Example

FMOV Dd, #1.0

Encoding

Binary Layout

0

31

0

30

0

29

11110

28:24

00

23:22

1

21

imm8

20:13

100

12:10

00000

9:5

Rd

4:0

 

Format FP Immediate

Opcode 0x1E201000

Extension Floating Point

Operands

• Hd|Sd|Dd
  Destination SIMD&FP register (half, single or double-precision)
• fimm
  Floating-point immediate value

Related

Other forms of fmov

• fmov Floating-Point Move (Register)
• fmov Floating-Point Move (General)
• fmov Floating-Point Move (General to FP)
• fmov Floating-point Move (Register)
• fmov Floating-point Move (Immediate)

More in Floating Point

Reference

View in Arm A64 ISA Reference ↗ Arm A64 ISA

Instruction Forms

Encoding	Instruction		ISA		Bit pattern
0x0F00FC00	FMOV <Vd>.<T>, #<imm>		A64		0 | Q | 0 | 0111100000 | a | b | c | 1111 | 1 | 1 | d | e | f | g | h | Rd
0x0F00F400	FMOV <Vd>.<T>, #<imm>		A64		0 | Q | 0 | 0111100000 | a | b | c | 1111 | 0 | 1 | d | e | f | g | h | Rd
0x6F00F400	FMOV <Vd>.2D, #<imm>		A64		0 | 1 | 1 | 0111100000 | a | b | c | 1111 | 0 | 1 | d | e | f | g | h | Rd
0x05104000	FMOV <Zd>.<T>, <Pg>/M, #0.0		A64		00000101 | size | 01 | Pg | 0 | 1 | 0 | 00000000 | Zd
0x2538C000	FMOV <Zd>.<T>, #0.0		A64		00100101 | size | 111 | 0 | 0 | 011 | 0 | 00000000 | Zd
0x0510C000	FMOV <Zd>.<T>, <Pg>/M, #<const>		A64		00000101 | size | 01 | Pg | 110 | imm8 | Zd
0x2539C000	FMOV <Zd>.<T>, #<const>		A64		00100101 | size | 111 | 0 | 0 | 111 | 0 | imm8 | Zd
0x1EE04000	FMOV <Hd>, <Hn>		A64		0 | 0 | 0 | 11110 | 11 | 10000 | 00 | 10000 | Rn | Rd
0x1E204000	FMOV <Sd>, <Sn>		A64		0 | 0 | 0 | 11110 | 00 | 10000 | 00 | 10000 | Rn | Rd
0x1E604000	FMOV <Dd>, <Dn>		A64		0 | 0 | 0 | 11110 | 01 | 10000 | 00 | 10000 | Rn | Rd
0x1EE60000	FMOV <Wd>, <Hn>		A64		0 | 0 | 0 | 11110 | 11 | 1 | 00 | 110 | 000000 | Rn | Rd
0x9EE60000	FMOV <Xd>, <Hn>		A64		1 | 0 | 0 | 11110 | 11 | 1 | 00 | 110 | 000000 | Rn | Rd
0x1EE70000	FMOV <Hd>, <Wn>		A64		0 | 0 | 0 | 11110 | 11 | 1 | 00 | 111 | 000000 | Rn | Rd
0x1E270000	FMOV <Sd>, <Wn>		A64		0 | 0 | 0 | 11110 | 00 | 1 | 00 | 111 | 000000 | Rn | Rd

Description

Floating-point move immediate (scalar). This instruction copies a floating-point immediate constant into the SIMD&FP destination register. Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped.

Operation

CheckFPEnabled64();

V[d, datasize] = imm;