/usr/x86_64-linux-gnux32/include/asm/vm86.h is in linux-libc-dev-x32-cross 4.15.0-18.19cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _ASM_X86_VM86_H
#define _ASM_X86_VM86_H
/*
* I'm guessing at the VIF/VIP flag usage, but hope that this is how
* the Pentium uses them. Linux will return from vm86 mode when both
* VIF and VIP is set.
*
* On a Pentium, we could probably optimize the virtual flags directly
* in the eflags register instead of doing it "by hand" in vflags...
*
* Linus
*/
#include <asm/processor-flags.h>
#define BIOSSEG 0x0f000
#define CPU_086 0
#define CPU_186 1
#define CPU_286 2
#define CPU_386 3
#define CPU_486 4
#define CPU_586 5
/*
* Return values for the 'vm86()' system call
*/
#define VM86_TYPE(retval) ((retval) & 0xff)
#define VM86_ARG(retval) ((retval) >> 8)
#define VM86_SIGNAL 0 /* return due to signal */
#define VM86_UNKNOWN 1 /* unhandled GP fault
- IO-instruction or similar */
#define VM86_INTx 2 /* int3/int x instruction (ARG = x) */
#define VM86_STI 3 /* sti/popf/iret instruction enabled
virtual interrupts */
/*
* Additional return values when invoking new vm86()
*/
#define VM86_PICRETURN 4 /* return due to pending PIC request */
#define VM86_TRAP 6 /* return due to DOS-debugger request */
/*
* function codes when invoking new vm86()
*/
#define VM86_PLUS_INSTALL_CHECK 0
#define VM86_ENTER 1
#define VM86_ENTER_NO_BYPASS 2
#define VM86_REQUEST_IRQ 3
#define VM86_FREE_IRQ 4
#define VM86_GET_IRQ_BITS 5
#define VM86_GET_AND_RESET_IRQ 6
/*
* This is the stack-layout seen by the user space program when we have
* done a translation of "SAVE_ALL" from vm86 mode. The real kernel layout
* is 'kernel_vm86_regs' (see below).
*/
struct vm86_regs {
/*
* normal regs, with special meaning for the segment descriptors..
*/
long ebx;
long ecx;
long edx;
long esi;
long edi;
long ebp;
long eax;
long __null_ds;
long __null_es;
long __null_fs;
long __null_gs;
long orig_eax;
long eip;
unsigned short cs, __csh;
long eflags;
long esp;
unsigned short ss, __ssh;
/*
* these are specific to v86 mode:
*/
unsigned short es, __esh;
unsigned short ds, __dsh;
unsigned short fs, __fsh;
unsigned short gs, __gsh;
};
struct revectored_struct {
unsigned long __map[8]; /* 256 bits */
};
struct vm86_struct {
struct vm86_regs regs;
unsigned long flags;
unsigned long screen_bitmap;
unsigned long cpu_type;
struct revectored_struct int_revectored;
struct revectored_struct int21_revectored;
};
/*
* flags masks
*/
#define VM86_SCREEN_BITMAP 0x0001
struct vm86plus_info_struct {
unsigned long force_return_for_pic:1;
unsigned long vm86dbg_active:1; /* for debugger */
unsigned long vm86dbg_TFpendig:1; /* for debugger */
unsigned long unused:28;
unsigned long is_vm86pus:1; /* for vm86 internal use */
unsigned char vm86dbg_intxxtab[32]; /* for debugger */
};
struct vm86plus_struct {
struct vm86_regs regs;
unsigned long flags;
unsigned long screen_bitmap;
unsigned long cpu_type;
struct revectored_struct int_revectored;
struct revectored_struct int21_revectored;
struct vm86plus_info_struct vm86plus;
};
#endif /* _ASM_X86_VM86_H */
|