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23 lines
406 B
ArmAsm
23 lines
406 B
ArmAsm
.file "key_input.c"
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.text
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.align 2
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.global _start
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.type _start,function
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_start:
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mov r0, #0x4000000
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ldr r0, [r0, #0x130] @ r0 = read_io(0x4000130)
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ldrh r1, [pc, #0x10] @ r1 = 0x3ff
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ldrh r2, [pc, #0x0e] @ r2 = 0x384 key:L+R+D+SEL
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and r0, r0, r2 @ r0 = r0 & 0x3ff
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cmp r0, r1 @ r0 == key
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beq _next @ if r0 == key then next else return
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bx lr
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_const:
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.long 0x03ff0384
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_next:
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.long 0
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