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If there is no BIOS32 present, don't try to call into it.

This commit is contained in:
thorpej 2000-02-02 04:09:37 +00:00
parent faa17682df
commit e1aef0ac87
1 changed files with 4 additions and 1 deletions
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5
sys/arch/i386/i386/bios32.c
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@ -1,4 +1,4 @@
/* $NetBSD: bios32.c,v 1.1 1999/11/17 00:55:50 thorpej Exp $ */
/* $NetBSD: bios32.c,v 1.2 2000/02/02 04:09:37 thorpej Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -142,6 +142,9 @@ bios32_service(service, e, ei)
u_int32_t eax, ebx, ecx, edx;
paddr_t entry;
if (bios32_entry.offset == 0)
return (0); /* BIOS32 not present */
__asm __volatile("lcall (%%edi)"
: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
: "0" (service), "1" (0), "D" (&bios32_entry));