plan9fox/sys/src/ape/lib/ap/68020/strcmp.s
2011-03-30 19:35:09 +03:00

21 lines
203 B
ArmAsm

TEXT strcmp(SB), $0
MOVL s1+0(FP), A2
MOVL s2+4(FP), A1
l1: MOVB (A1)+, R0
BEQ end
CMPB R0, (A2)+
BEQ l1
BCS gtr
MOVL $-1, R0
RTS
gtr: MOVL $1, R0
RTS
end: TSTB (A2)
BNE gtr
CLRL R0
RTS