24 lines
691 B
ArmAsm
24 lines
691 B
ArmAsm
/* https://github.com/cirosantilli/x86-bare-metal-examples#minimal-gas-example */
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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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/* Zero ds.
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*
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* This is only needed if we are going to access memory.
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*
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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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*
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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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