Retro68/gcc/newlib/libc/machine/h8300/strcmp.S
Wolfgang Thaller d464252791 re-add newlib
2017-04-11 23:13:36 +02:00

61 lines
779 B
ArmAsm

#include "setarch.h"
#include "defines.h"
#if defined (__H8300SX__)
.global _strcmp
_strcmp:
mov.l er0,er2
loop:
mov.b @er2+,r0l
beq eos
sub.b @er1+,r0l
beq loop
exts.l #2,er0
rts
eos:
sub.b @er1,r0l
exts.l #2,er0
rts
#else
.section .text
.align 2
.global _strcmp
_strcmp:
MOVP A0P,A2P
MOVP A1P,A3P
.L5:
mov.b @A2P+,A1L
beq .L3
mov.b @A3P+,A0L
cmp.b A0L,A1L
beq .L5
#ifdef __NORMAL_MODE__
sub #1,A3P
#else
subs #1,A3P
#endif
.L3:
mov.b @(-1,A2P),A0L
mov.b @A3P,A1L
sub.b A1L,A0L
; We have to sign extend the result to 32bits just in case
; we are using 32bit integers.
#ifdef __H8300H__
exts.w r0
exts.l er0
#else
#ifdef __H8300S__
exts.w r0
exts.l er0
#else
bld #7,r0l
subx r0h,r0h
subx r1l,r1l
subx r1h,r1h
#endif
#endif
rts
.end
#endif