BLTUI — Branch if Less Than Unsigned Immediate

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
BLTUI 10110110
s 3210
r 3210
imm8 76543210

Assembler Syntax

BLTUI as, imm, label

Description

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

BLTUI branches if address register as is unsigned less than the constant encoded in the r field. The constant values encoded in the r field are not simply 0..15. For the constant values that can be encoded by r, see Branch Unsigned Immediate (b4constu) Encodings.

The target instruction address of the branch is given by the address of the BLTUI instruction, plus the sign-extended 8-bit imm8 field of the instruction plus four. If the address register as is greater than or equal to the constant, execution continues with the next sequential instruction.

The inverse of BLTUI is BGEUI.

Operation

if (0||AR[s]) < (0||B4CONSTU(r)) then
	nextPC ← PC + (imm8724||imm8) + 4
endif

Exceptions

EveryInstR Group (see EveryInstR Group:)