48 lines
656 B
NASM
48 lines
656 B
NASM
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.global start
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.global stack
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.global reset
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.global dst_addr
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.global src_addr
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.global words
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.text
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.thumb
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.align 0
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start:
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ldr r0, dst_addr
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ldr r1, src_addr
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ldr r2, words
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b check
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copy:
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ldmia r1!, {r3}
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stmia r0!, {r3}
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sub r2, #1
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check:
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cmp r2, #0
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bne copy
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@ Fix for SAM-BA stack bug
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ldr r0, reset
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cmp r0, #0
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bne return
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ldr r0, stack
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mov sp, r0
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return:
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bx lr
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.align 0
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stack:
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.word 0
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reset:
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.word 0
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dst_addr:
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.word 0
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src_addr:
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.word 0
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words:
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.word 0
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