1 .\" Copyright (c) 1998 Jonathan Lemon
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25 .\" $FreeBSD: src/lib/libc/i386/sys/i386_vm86.2,v 1.3.2.6 2001/12/14 18:33:54 ru Exp $
26 .\" $DragonFly: src/lib/libc/i386/sys/i386_vm86.2,v 1.2 2003/06/17 04:26:43 dillon Exp $
33 .Nd control vm86-related functions
41 .Fn i386_vm86 "int function" "void *data"
44 is used to call various vm86 related functions.
46 can be one of the following values:
47 .Bl -tag -offset indent -width VM86_SET_VME
49 This will initialize the kernel's vm86 parameter area for the
50 process, and permit the process to make vm86 calls.
52 points to the following structure:
54 struct vm86_init_args {
62 is used to turn on debugging code.
64 controls the type of CPU being emulated, and is currently unimplemented.
66 is a bitmap which determines whether vm86 interrupts should be handled
67 in vm86 mode, or reflected back to the process. If the
69 bit is set, the interrupt will be reflected to the process, otherwise
70 it will be dispatched by the vm86 interrupt table.
71 .\" .It Dv VM86_SET_VME
72 .\" .It Dv VM86_GET_VME
73 .\" .It Dv VM86_INTCALL
76 vm86 mode is entered by calling
78 with the correct machine context for vm86, and with the
80 bit set. Control returns to the process upon delivery of a signal.
88 The kernel does not have vm86 support, or an invalid function was specified.
90 There is not enough memory to initialize the kernel data structures.
93 This man page was written by