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- .sect .text; .sect .rom; .sect .data; .sect .bss
- .define _sdenter
- .sect .text
- _sdenter:
- mov ax,3880
- push bp
- mov bp,sp
- push si
- push di
- mov cx,6(bp)
- mov bx,4(bp)
- call syscal
- pop di
- pop si
- pop bp
- jae 1f
- mov (_errno),ax
- mov ax,-1
- 1:
- ret
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