27 lines
344 B
ArmAsm
27 lines
344 B
ArmAsm
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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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! Say whether a given file descriptor number refers to a valid open file
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! descriptor.
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.define __sys_isopen
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__sys_isopen:
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mov bx, sp
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mov bx, 2(bx)
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mov ax, 0x4400
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int 0x21
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sbb ax, ax
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inc ax
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ret
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