63 lines
728 B
ArmAsm
63 lines
728 B
ArmAsm
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.text
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.globl _printf
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write = 4
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_printf:
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mov r2,-(sp)
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mov r3,-(sp)
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mov r4,-(sp)
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mov sp,r3
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mov $buff,r4
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add $010,r3
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mov (r3)+,r2
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prloop:
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movb (r2)+,r0
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beq ready
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cmpb r0,$045
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bne 1f
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movb (r2)+,r0
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cmpb r0,$0144
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beq 2f
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cmpb r0,$0163
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beq 3f
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1: movb r0,(r4)+
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br prloop
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2: mov (r3)+,r1
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bge 4f
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movb $055,(r4)+
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neg r1
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4: jsr pc,printn
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br prloop
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printn:
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clr r0
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div $010,r0
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beq 5f
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mov r1,-(sp)
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mov r0,r1
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jsr pc,printn
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mov (sp)+,r1
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5: add $060,r1
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movb r1,(r4)+
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rts pc
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3: mov (r3)+,r1
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7: movb (r1)+,r0
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bne 6f
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br prloop
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6: movb r0,(r4)+
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br 7b
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ready:
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movb r0,(r4)+
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sub $buff,r4
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mov $01,r0
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mov $buff,9f
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mov r4,9f+2
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sys write
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9: 0; 0
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mov (sp)+,r4
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mov (sp)+,r3
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mov (sp)+,r2
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rts pc
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.data
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buff: .=.+256.
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