25 lines
1.1 KiB
ArmAsm
25 lines
1.1 KiB
ArmAsm
.text
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.globl main
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main:
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# Microsoft X86_64 Calling convention:
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# - The first four integer or pointer parameters are passed in the rcx, rdx, r8, and r9 registers.
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# - The first four floating-point parameters are passed in the first four SSE registers, xmm0-xmm3.
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# - The caller reserves space on the stack for arguments passed in registers. The called function can use this space to spill the contents of registers to the stack.
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# - Any additional arguments are passed on the stack.
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# - An integer or pointer return value is returned in the rax register, while a floating-point return value is returned in xmm0.
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# see https://learn.microsoft.com/en-us/windows-hardware/drivers/debugger/x64-architecture
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sub $32, %rsp # reserve stack space for the call
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leaq fmt(%rip), %rcx # first parameter
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leaq msg(%rip), %rdx # second parameter
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call printf
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add $32, %rsp # restore stack space
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xor %eax,%eax # set 0 as exit code
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ret
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msg:
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.asciz "Hello world\n" # asciz puts a 0 byte at the end
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fmt:
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.asciz "%s" # asciz puts a 0 byte at the end |