25 lines
640 B
ArmAsm
25 lines
640 B
ArmAsm
/* Minimal example that does nothing, just halts. */
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/* Tell GAS to generate 16 bit code. */
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.code16
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/* Don't listen to interrupts. */
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cli
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/*
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Zero ds.
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This is only needed if we are going to access memory.
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The program might work on QEMU without this, but fail on real hardware:
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http://stackoverflow.com/questions/32508919/how-to-produce-a-minimal-bios-hello-world-boot-sector-with-gcc-that-works-from-a
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You cannot write immediates direclty to it, must pass through ax:
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http://stackoverflow.com/questions/19074666/8086-why-cant-we-move-an-immediate-data-into-segment-register
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*/
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xor %ax, %ax
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mov %ax, %ds
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/* Stop the processor. */
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hlt
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