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SPAWNERR.ASM
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Assembly Source File
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1991-11-15
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2KB
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74 lines
IFNDEF __TPINC
NAME IOerror
TITLE Convert DOS error numbers to C library error numbers
PAGE 60,132
;-----------------------------------------------------------
; (c) Copyright 1991 Ralf Brown All Rights Reserved
; This file may be redistributed as a part of the complete SPAWNO package,
; under its distribution conditions
;
; SPAWNO v4.00
; Overlaying spawnv()
;
; File: SPAWNERR.ASM Convert DOS error numbers to C library error numbers
;
;-----------------------------------------------------------
INCLUDE RULES.ASI
Header@
ENDIF ;ndef __TPINC
;-----------------------------------------------------------
; initialized data
DSeg@
ExtSym@ _doserrno,WORD,__CDECL__
ExtSym@ errno,WORD,__CDECL__
IFNDEF __TURBOC__
error_numbers label byte
db 0
db 1
db 2 ; ENOENT
db 3
db 24 ; EMFILE
db 13 ; EACCESS
db 6
db 7
db 12 ; ENOMEM
num_errors equ $-error_numbers
ENDIF ;ndef __TURBOC__
DSegEnd@
CSeg@
;----------------------------------------------------------------
; entry: AX = error number
; DS = DGROUP
; exit: errno and _doserrno set
;----------------------------------------------------------------
public __SPAWN_ERRNO
__SPAWN_ERRNO proc near
mov DGROUP:_doserrno@,ax
IFNDEF __TURBOC__
cmp ax,num_errors
jae translated
mov bx,offset DGROUP:error_numbers
xlat
translated:
ENDIF ;ndef __TURBOC__
mov DGROUP:errno@,ax
mov ax,-1
ret
__SPAWN_ERRNO endp
CSegEnd@
IFNDEF __TPINC
NOWARN OPI
END
ENDIF