b.w

Branch (Wide)

B.W <label>

Thumb-2 32-bit Unconditional Branch (large range).

Pseudocode Operation

if ConditionPassed() then
  offset ← SignExtend(S || imm10 || J1 || J2 || imm11, 24)
  PC ← PC + (offset << 1)

Example

B.W label

Encoding

Binary Layout

11110

31:27

S

26

imm10

25:16

10

15:14

J1

13

1

12

J2

11

imm11

10:0

 

Format Thumb Branch

Opcode 0xF0009000

Extension T32 (Thumb2)

Operands

• label
  Label

Related

More in T32 (Thumb2)

Reference

View in Arm A64 ISA Reference ↗ Arm AArch32 ISA

Instruction Forms

Encoding	Instruction		ISA		Bit pattern
0x0A000000	B{<c>}{<q>} <label>		A32		cond | 101 | 0 | imm24
0xD000	B<c>{<q>} <label>		T32		1101 | cond | imm8
0xE000	B{<c>}{<q>} <label>		T32		11100 | imm11
0xF0008000	B<c>.W <label>		T32		11110 | S | cond | imm6 | 10 | J1 | 0 | J2 | imm11
0xF0009000	B{<c>}.W <label>		T32		11110 | S | imm10 | 10 | J1 | 1 | J2 | imm11

Description

Branch causes a branch to a target address.

Operation

if ConditionPassed() then
    EncodingSpecificOperations();
    BranchWritePC(PC + imm32, BranchType_DIR);