войти в виртуальный режим 8086 (enter virtual 8086 mode)
Имя (Name)
vm86old, vm86 - enter virtual 8086 mode
Синопсис (Synopsis)
#include <sys/vm86.h>
int vm86old(struct vm86_struct *info);
int vm86(unsigned long fn, struct vm86plus_struct *v86);
Описание (Description)
The system call vm86() was introduced in Linux 0.97p2. In Linux
2.1.15 and 2.0.28, it was renamed to vm86old(), and a new vm86()
was introduced. The definition of struct vm86_struct was changed
in 1.1.8 and 1.1.9.
These calls cause the process to enter VM86 mode (virtual-8086 in
Intel literature), and are used by dosemu.
VM86 mode is an emulation of real mode within a protected mode
task.
Возвращаемое значение (Return value)
On success, zero is returned. On error, -1 is returned, and
errno is set to indicate the error.
Ошибки (Error)
EFAULT This return value is specific to i386 and indicates a
problem with getting user-space data.
ENOSYS This return value indicates the call is not implemented on
the present architecture.
EPERM Saved kernel stack exists. (This is a kernel sanity
check; the saved stack should exist only within vm86 mode
itself.)
Стандарты (Conforming to)
This call is specific to Linux on 32-bit Intel processors, and
should not be used in programs intended to be portable.
