GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 4.8 |
i386 |
 |
vm86(2) |
 |
vm86old, vm86 − enter virtual 8086 mode
#include <sys/vm86.h>
int vm86old(struct vm86_struct *info);
int vm86(unsigned long fn, struct vm86plus_struct *v86);
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.
On success, zero is returned. On error, −1 is returned, and errno is set appropriately.
|
EPERM |
Saved kernel stack exists. (This is a kernel sanity check; the saved stack should only exist within vm86 mode itself.) | ||
|
EFAULT |
This return value is specific to i386 and indicates a problem with getting userspace data. | ||
|
ENOSYS |
This return value indicates the call is not implemented on the present architecture. |
This call is specific to Linux on Intel processors, and should not be used in programs intended to be portable.
|
vm86(2) | |