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138 lines
3.5 KiB
C
138 lines
3.5 KiB
C
/*
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* COPYRIGHT: GPL - See COPYING in the top level directory
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* PROJECT: ReactOS Virtual DOS Machine
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* FILE: subsystems/mvdm/ntvdm/cpu/x86context.h
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* PURPOSE: x86 CPU Context Frame definitions
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* PROGRAMMERS: Hermes Belusca-Maito (hermes.belusca@sfr.fr)
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*
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* NOTE: Taken from the PSDK.
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*/
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#ifndef __X86CONTEXT_H__
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#define __X86CONTEXT_H__
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#pragma once
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/* Clean everything that may have been defined before */
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#undef SIZE_OF_80387_REGISTERS
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#undef MAXIMUM_SUPPORTED_EXTENSION
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#undef CONTEXT_i386
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#undef CONTEXT_i486
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#undef CONTEXT_CONTROL
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#undef CONTEXT_INTEGER
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#undef CONTEXT_SEGMENTS
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#undef CONTEXT_FLOATING_POINT
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#undef CONTEXT_DEBUG_REGISTERS
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#undef CONTEXT_EXTENDED_REGISTERS
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#undef CONTEXT_FULL
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#undef CONTEXT_ALL
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#undef CONTEXT_DEBUGGER
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#undef CONTEXT_XSTATE
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#define SIZE_OF_80387_REGISTERS 80
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#define MAXIMUM_SUPPORTED_EXTENSION 512
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#define CONTEXT_i386 0x00010000
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#define CONTEXT_i486 0x00010000
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#define CONTEXT_CONTROL (CONTEXT_i386|0x00000001L) // SS:SP, CS:IP, FLAGS, BP
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#define CONTEXT_INTEGER (CONTEXT_i386|0x00000002L) // AX, BX, CX, DX, SI, DI
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#define CONTEXT_SEGMENTS (CONTEXT_i386|0x00000004L) // DS, ES, FS, GS
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#define CONTEXT_FLOATING_POINT (CONTEXT_i386|0x00000008L) // 387 state
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#define CONTEXT_DEBUG_REGISTERS (CONTEXT_i386|0x00000010L) // DB 0-3,6,7
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#define CONTEXT_EXTENDED_REGISTERS (CONTEXT_i386|0x00000020L) // CPU-specific extensions
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#define CONTEXT_FULL (CONTEXT_CONTROL|CONTEXT_INTEGER|CONTEXT_SEGMENTS)
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#define CONTEXT_ALL (CONTEXT_CONTROL | CONTEXT_INTEGER | CONTEXT_SEGMENTS | \
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CONTEXT_FLOATING_POINT | CONTEXT_DEBUG_REGISTERS | \
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CONTEXT_EXTENDED_REGISTERS)
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#define CONTEXT_DEBUGGER (CONTEXT_FULL | CONTEXT_FLOATING_POINT)
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#define CONTEXT_XSTATE (CONTEXT_i386 | 0x00000040L)
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typedef struct _X87FLOATING_SAVE_AREA
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{
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ULONG ControlWord;
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ULONG StatusWord;
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ULONG TagWord;
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ULONG ErrorOffset;
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ULONG ErrorSelector;
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ULONG DataOffset;
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ULONG DataSelector;
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UCHAR RegisterArea[SIZE_OF_80387_REGISTERS];
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ULONG Cr0NpxState;
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} X87FLOATING_SAVE_AREA, *PX87FLOATING_SAVE_AREA;
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#include "pshpack4.h"
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/*
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* x86 CPU Context Frame
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*/
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typedef struct _X86CONTEXT
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{
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/*
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* The flags values within this flag control the contents of
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* a CONTEXT record.
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*/
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ULONG ContextFlags;
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/*
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* Section specified/returned if CONTEXT_DEBUG_REGISTERS
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* is set in ContextFlags.
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*/
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ULONG Dr0;
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ULONG Dr1;
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ULONG Dr2;
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ULONG Dr3;
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ULONG Dr6;
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ULONG Dr7;
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/*
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* Section specified/returned if CONTEXT_FLOATING_POINT
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* is set in ContextFlags.
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*/
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X87FLOATING_SAVE_AREA FloatSave;
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/*
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* Section specified/returned if CONTEXT_SEGMENTS
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* is set in ContextFlags.
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*/
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ULONG SegGs;
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ULONG SegFs;
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ULONG SegEs;
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ULONG SegDs;
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/*
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* Section specified/returned if CONTEXT_INTEGER
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* is set in ContextFlags.
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*/
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ULONG Edi;
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ULONG Esi;
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ULONG Ebx;
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ULONG Edx;
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ULONG Ecx;
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ULONG Eax;
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/*
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* Section specified/returned if CONTEXT_CONTROL
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* is set in ContextFlags.
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*/
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ULONG Ebp;
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ULONG Eip;
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ULONG SegCs;
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ULONG EFlags;
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ULONG Esp;
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ULONG SegSs;
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/*
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* Section specified/returned if CONTEXT_EXTENDED_REGISTERS
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* is set in ContextFlags. The format and contexts are processor specific.
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*/
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UCHAR ExtendedRegisters[MAXIMUM_SUPPORTED_EXTENSION];
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} X86CONTEXT;
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#include "poppack.h"
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#endif /* __X86CONTEXT_H__ */
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