ILL.N — Narrow Illegal Instruction

Instruction Word

Slot
Inst16b
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 x16b - 16 bit(s) 110
ILL.N 1111000001101101

Assembler Syntax

ILL.N

C Syntax

#include <xtensa/tie/xt_density.h>

extern void XT_ILL_N(void);

Description

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

ILL.N is a 16-bit opcode that does whatever illegal opcodes do in the implementation. For a 24-bit version, see ILL.

Operation

Exception(IllegalInstructionCause)

Exceptions

EveryInst Group (see EveryInst Group:)GenExcep(IllegalInstructionCause) if Exception Option

Protos that use ILL.N

proto ILL.N { }{}{
ILL.N;
}