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46 lines
872 B
NASM
46 lines
872 B
NASM
section .text
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global _start
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global break_here
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global stop1
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global stop2
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global stop3
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global stop4
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_start:
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break_here:
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xor rax, rax
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stop1:
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nop ; Stop point #1: No operands
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stop2:
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xor rax, rax ; Stop point #2: Some simple operands
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lea rax, [some_data]
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stop3:
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; Stop point #3: More complex operands.
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mov qword [rax], 0x20
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call loop
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lea rax, [some_data]
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stop4:
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; Stop point #4: Even more complex operands, after loop.
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mov dword [rax+4], 0x20
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exit:
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; Terminate the process by calling sys_exit(0) in Linux.
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mov rax, 60
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mov rdi, 0
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syscall
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; Loop subroutine. Loops for a while so we can test whether stepuntilasm can get
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; to a directive that's sitting after a few iterations of a loop.
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loop:
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mov rax, 100
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loop_iter:
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sub rax, 1
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jnz loop_iter
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ret
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section .bss
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some_data: resq 1
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