22 lines
376 B
ArmAsm
22 lines
376 B
ArmAsm
global ft_read
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extern __errno_location
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section .text
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ft_read:
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mov rax, 0 ;syscall number for read, args are already set at the right place
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syscall
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cmp rax, 0 ; if return is < 0, it's an error in negative
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jge .success
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neg rax ; inv errno, and set errno
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mov edi, eax
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sub rsp, 8
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call __errno_location wrt ..plt
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add rsp, 8
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mov [rax], edi
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mov rax, -1
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.success:
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ret
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