P8000/WEGA/contrib/lcc/lib/libc/u8k/gen/strrchr.s

26 lines
332 B
ArmAsm

.seg
sp := r15
SP := rr14
fp := r13
FP := rr12
.psec
.code
_strrchr::
{
ldm r4,|_stkseg+4|(sp),#3 // rr4 - s , rl6 - c
subl rr2,rr2
jr ~start
~loop:
inc r5,#1 // nxt byte
~start:
cpb rl6,@rr4
jr ne,~endtest
ldl rr2,rr4 // preliminary return value
~endtest:
testb @rr4
jr nz,~loop // no end of string
ret
}