修改了Makefile同时修改了源文件
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@ -6,5 +6,12 @@ _start:
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ldr sp, =0x40000000
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ldr sp, =0x40000000
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b main
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b main
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main:
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ldr r0, =0x40000000
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ldr r1, =0x00000001
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str r1, [r0]
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ldr r0, =0x40000000
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ldr r1, =0x00000000
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str r1, [r0]
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b main
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@ -1,6 +1,6 @@
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led:led.s
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led:led.s
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arm-linux-gnueabihf-gcc -c led.s
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arm-linux-gnueabihf-gcc -c -nostdlib led.s
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arm-linux-gnueabihf-gcc -o led led.o
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arm-linux-gnueabihf-gcc -o led led.o
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clean:
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clean:
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