46 lines
579 B
ArmAsm
46 lines
579 B
ArmAsm
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#include "defines.h"
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#ifdef __H8300H__
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.h8300h
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#endif
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#ifdef __H8300S__
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.h8300s
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#endif
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.section .text
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.align 2
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.global _strcmp
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_strcmp:
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MOVP A0P,A2P
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MOVP A1P,A3P
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.L5:
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mov.b @A2P+,A1L
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beq .L3
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mov.b @A3P+,A0L
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cmp.b A0L,A1L
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beq .L5
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subs #1,A3P
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.L3:
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mov.b @(-1,A2P),A0L
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mov.b @A3P,A1L
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sub.b A1L,A0L
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; We have to sign extend the result to 32bits just in case
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; we are using 32bit integers.
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#ifdef __H8300H__
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exts.w r0
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exts.l er0
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#else
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#ifdef __H8300S__
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exts.w r0
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exts.l er0
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#else
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bld #7,r0l
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subx r0h,r0h
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subx r1l,r1l
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subx r1h,r1h
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#endif
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#endif
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rts
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.end
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