26 lines
439 B
ArmAsm
26 lines
439 B
ArmAsm
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/*
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Current implementation only counts the bytes instead of characters.
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@args:
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r1 => pointer to the string
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@returns:
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r0 => string length
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@clobbers:
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r2
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*/
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strlen:
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mov r0, #0
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1:
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ldrb r2, [r1, r0]
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cmp r2, #0
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bxle lr
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add r0, r0, #1
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b 1b
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/*
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@input r1, r2 - pointers to the strings to compare
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@return r0 - 0 if equal, -1 if a < b, 1 if a > b
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*/
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strcmp: @ TODO: implement
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