BT — Branch if True

Instruction Word

Slot
Inst
6
3
6
2
6
1
6
0
5
9
5
8
5
7
5
6
5
5
5
4
5
3
5
2
5
1
5
0
4
9
4
8
4
7
4
6
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9876543210
Format x24 - 24 bit(s) 0
BT 0001 01110110
s 3210
imm8 76543210

Assembler Syntax

BT bs, label

Description

(please consult the Xtensa ® Instruction Set Architecture Reference Manual for any cross references and additional information)

BT branches to the target address if Boolean register bs is true.

The target instruction address of the branch is given by the address of the BT instruction, plus the sign-extended 8-bit imm8 field of the instruction plus four. If the Boolean register bs is false, execution continues with the next sequential instruction.

The inverse of BT is BF.

Operation

if BRs then
	nextPC ← PC + (imm8724||imm8) + 4
endif

Exceptions

EveryInst Group (see EveryInst Group:)