mirror of
https://github.com/panpaul/tiny_os
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20 lines
272 B
ArmAsm
20 lines
272 B
ArmAsm
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.macro syscall msg ptr
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li a0, \msg
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li a1, \ptr
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ecall
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.endm
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.text
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.global _start
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_start:
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la t0, msg
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.loop:
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lb a2, 0(t0)
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beqz a2, _start # print forever
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syscall (1<<12 | 1), 1 # see uapi/syscall.rs
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addi t0, t0, 1
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j .loop
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.data
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msg : .string "Hello, world!\n\0"
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