9.49.2.2 Register Names

as supports the following names for registers:

general register 0

r0, zero

general register 1

r1

general register 2

r2, hp

general register 3

r3, sp

general register 4

r4, gp

general register 5

r5, tp

general register 6

r6

general register 7

r7

general register 8

r8

general register 9

r9

general register 10

r10

general register 11

r11

general register 12

r12

general register 13

r13

general register 14

r14

general register 15

r15

general register 16

r16

general register 17

r17

general register 18

r18

general register 19

r19

general register 20

r20

general register 21

r21

general register 22

r22

general register 23

r23

general register 24

r24

general register 25

r25

general register 26

r26

general register 27

r27

general register 28

r28

general register 29

r29

general register 30

r30, ep

general register 31

r31, lp

system register 0

eipc

system register 1

eipsw

system register 2

fepc

system register 3

fepsw

system register 4

ecr

system register 5

psw

system register 16

ctpc

system register 17

ctpsw

system register 18

dbpc

system register 19

dbpsw

system register 20

ctbp