2021-03-24 14:30:18 +00:00
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#
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! $Source$
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! $State$
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! $Revision$
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! Declare segments (the order is important).
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.sect .text
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.sect .rom
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.sect .data
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.sect .bss
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.sect .text
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! .sys_zret: if the carry flag is set, then set `errno' from the DOS error
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2021-03-28 12:09:52 +00:00
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! code in ax, and return a shortword -1. If the carry flag is clear, just
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! return a shortword zero.
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2021-03-24 14:30:18 +00:00
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!
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! .sys_axret: if the carry flag is set, then set `errno' from the DOS error
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2021-03-28 12:09:52 +00:00
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! code in ax, and return a shortword -1. If the carry flag is clear, just
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! return ax as a return value.
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!
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! .sys_dxaxret: same as .sys_axret, but return a longword -1 or dx:ax as a
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! return value.
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2021-03-24 14:30:18 +00:00
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.extern .sys_zret
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.extern .sys_axret
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2021-03-28 12:09:52 +00:00
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.extern .sys_dxaxret
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2021-03-24 14:30:18 +00:00
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.sys_zret:
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jc error
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xor ax, ax
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no_error:
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ret
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.sys_axret:
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2021-03-28 12:09:52 +00:00
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.sys_dxaxret:
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2021-03-24 14:30:18 +00:00
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jnc no_error
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error:
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push ax
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call __sys_seterrno
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pop cx
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ret
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