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20 lines
356 B
ArmAsm
20 lines
356 B
ArmAsm
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/* ARM Thumb Assembler code */
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// arm-none-eabi-gcc -Wa,-amhls=blank_check.lst -c blank_check.S
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.cpu cortex-m0
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.thumb
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ldr r1, .START_ADDR
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ldr r2, .END_ADDR
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0: ldr r0, [r1]
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add r0, r0, #1
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bne 1f
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add r1, r1, #4
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cmp r1, r2
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bne 0b
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1: bkpt #0x00
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// success: r0=0
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// fail: r0!=0
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.align 2
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.START_ADDR: .word 0x08000000
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.END_ADDR: .word 0x08020000
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