18 lines
682 B
ArmAsm
18 lines
682 B
ArmAsm
.global _start
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.text
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_start:
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movl $4, %eax # 4 (code for "write" syscall) -> EAX register
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movl $1, %ebx # 1 (file descriptor for stdout) -> EBX (1st argument to syscall)
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movl $msg, %ecx # 32-bit address of msg string -> ECX (2nd argument)
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movl $len, %edx # length of msg string -> EDX (3rd arg)
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int $0x80 # interrupt with location 0x80 (128), which invokes the kernel's system call procedure
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movl $1, %eax # 1 ("exit") -> EAX
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movl $0, %ebx # 0 (with success) -> EBX
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int $0x80 # see previous
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.data
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msg:
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.ascii "Hello, world!\n" # inline ascii string
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len = . - msg # assign (current address - address of msg start) to symbol "len"
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