Files
2018-01-27 22:35:41 +09:00

28 lines
329 B
ArmAsm

.globl length
.globl position
.globl w, r, a, l
/
/
/ routine to return the length of a string
/
/ mov ...,r1
/ jsr pc,length
/ mov r0,...
/
length:
mov w(r1),r0
sub a(r1),r0
rts pc
/
/
/ routine to return the read pointer position
/
/ mov ...,r1
/ jsr pc,position
/ mov r0,...
/
position:
mov r(r1),r0
sub a(r1),r0
rts pc