forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
130 lines
3.1 KiB
130 lines
3.1 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
|
#ifndef _UAPI_ASM_X86_VM86_H |
|
#define _UAPI_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; /* unused, preserved by vm86() */ |
|
unsigned long cpu_type; |
|
struct revectored_struct int_revectored; |
|
struct revectored_struct int21_revectored; |
|
}; |
|
|
|
/* |
|
* flags masks |
|
*/ |
|
#define VM86_SCREEN_BITMAP 0x0001 /* no longer supported */ |
|
|
|
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 /* _UAPI_ASM_X86_VM86_H */
|
|
|