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19 lines
356 B
19 lines
356 B
/* 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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