+++ /dev/null
-/****************************************************************************
-*
-* Realmode X86 Emulator Library
-*
-* Copyright (C) 1996-1999 SciTech Software, Inc.
-* Copyright (C) David Mosberger-Tang
-* Copyright (C) 1999 Egbert Eich
-*
-* ========================================================================
-*
-* Permission to use, copy, modify, distribute, and sell this software and
-* its documentation for any purpose is hereby granted without fee,
-* provided that the above copyright notice appear in all copies and that
-* both that copyright notice and this permission notice appear in
-* supporting documentation, and that the name of the authors not be used
-* in advertising or publicity pertaining to distribution of the software
-* without specific, written prior permission. The authors makes no
-* representations about the suitability of this software for any purpose.
-* It is provided "as is" without express or implied warranty.
-*
-* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
-* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
-* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
-* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
-* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
-* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-* PERFORMANCE OF THIS SOFTWARE.
-*
-* ========================================================================
-*
-* Language: ANSI C
-* Environment: Any
-* Developer: Kendall Bennett
-*
-* Description: Header file for x86 register definitions.
-*
-****************************************************************************/
-/* $XFree86: xc/extras/x86emu/include/x86emu/regs.h,v 1.5 2003/10/22 20:03:05 tsi Exp $ */
-
-#ifndef __X86EMU_REGS_H
-#define __X86EMU_REGS_H
-
-/*---------------------- Macros and type definitions ----------------------*/
-
-#ifdef PACK
-# pragma PACK
-#endif
-
-/*
- * General EAX, EBX, ECX, EDX type registers. Note that for
- * portability, and speed, the issue of byte swapping is not addressed
- * in the registers. All registers are stored in the default format
- * available on the host machine. The only critical issue is that the
- * registers should line up EXACTLY in the same manner as they do in
- * the 386. That is:
- *
- * EAX & 0xff === AL
- * EAX & 0xffff == AX
- *
- * etc. The result is that alot of the calculations can then be
- * done using the native instruction set fully.
- */
-
-#ifdef __BIG_ENDIAN__
-
-typedef struct {
- u32 e_reg;
- } I32_reg_t;
-
-typedef struct {
- u16 filler0, x_reg;
- } I16_reg_t;
-
-typedef struct {
- u8 filler0, filler1, h_reg, l_reg;
- } I8_reg_t;
-
-#else /* !__BIG_ENDIAN__ */
-
-typedef struct {
- u32 e_reg;
- } I32_reg_t;
-
-typedef struct {
- u16 x_reg;
- } I16_reg_t;
-
-typedef struct {
- u8 l_reg, h_reg;
- } I8_reg_t;
-
-#endif /* BIG_ENDIAN */
-
-typedef union {
- I32_reg_t I32_reg;
- I16_reg_t I16_reg;
- I8_reg_t I8_reg;
- } i386_general_register;
-
-struct i386_general_regs {
- i386_general_register A, B, C, D;
- };
-
-typedef struct i386_general_regs Gen_reg_t;
-
-struct i386_special_regs {
- i386_general_register SP, BP, SI, DI, IP;
- u32 FLAGS;
- };
-
-/*
- * Segment registers here represent the 16 bit quantities
- * CS, DS, ES, SS.
- */
-
-struct i386_segment_regs {
- u16 CS, DS, SS, ES, FS, GS;
- };
-
-/* 8 bit registers */
-#define R_AH gen.A.I8_reg.h_reg
-#define R_AL gen.A.I8_reg.l_reg
-#define R_BH gen.B.I8_reg.h_reg
-#define R_BL gen.B.I8_reg.l_reg
-#define R_CH gen.C.I8_reg.h_reg
-#define R_CL gen.C.I8_reg.l_reg
-#define R_DH gen.D.I8_reg.h_reg
-#define R_DL gen.D.I8_reg.l_reg
-
-/* 16 bit registers */
-#define R_AX gen.A.I16_reg.x_reg
-#define R_BX gen.B.I16_reg.x_reg
-#define R_CX gen.C.I16_reg.x_reg
-#define R_DX gen.D.I16_reg.x_reg
-
-/* 32 bit extended registers */
-#define R_EAX gen.A.I32_reg.e_reg
-#define R_EBX gen.B.I32_reg.e_reg
-#define R_ECX gen.C.I32_reg.e_reg
-#define R_EDX gen.D.I32_reg.e_reg
-
-/* special registers */
-#define R_SP spc.SP.I16_reg.x_reg
-#define R_BP spc.BP.I16_reg.x_reg
-#define R_SI spc.SI.I16_reg.x_reg
-#define R_DI spc.DI.I16_reg.x_reg
-#define R_IP spc.IP.I16_reg.x_reg
-#define R_FLG spc.FLAGS
-
-/* special registers */
-#define R_SP spc.SP.I16_reg.x_reg
-#define R_BP spc.BP.I16_reg.x_reg
-#define R_SI spc.SI.I16_reg.x_reg
-#define R_DI spc.DI.I16_reg.x_reg
-#define R_IP spc.IP.I16_reg.x_reg
-#define R_FLG spc.FLAGS
-
-/* special registers */
-#define R_ESP spc.SP.I32_reg.e_reg
-#define R_EBP spc.BP.I32_reg.e_reg
-#define R_ESI spc.SI.I32_reg.e_reg
-#define R_EDI spc.DI.I32_reg.e_reg
-#define R_EIP spc.IP.I32_reg.e_reg
-#define R_EFLG spc.FLAGS
-
-/* segment registers */
-#define R_CS seg.CS
-#define R_DS seg.DS
-#define R_SS seg.SS
-#define R_ES seg.ES
-#define R_FS seg.FS
-#define R_GS seg.GS
-
-/* flag conditions */
-#define FB_CF 0x0001 /* CARRY flag */
-#define FB_PF 0x0004 /* PARITY flag */
-#define FB_AF 0x0010 /* AUX flag */
-#define FB_ZF 0x0040 /* ZERO flag */
-#define FB_SF 0x0080 /* SIGN flag */
-#define FB_TF 0x0100 /* TRAP flag */
-#define FB_IF 0x0200 /* INTERRUPT ENABLE flag */
-#define FB_DF 0x0400 /* DIR flag */
-#define FB_OF 0x0800 /* OVERFLOW flag */
-
-/* 80286 and above always have bit#1 set */
-#define F_ALWAYS_ON (0x0002) /* flag bits always on */
-
-/*
- * Define a mask for only those flag bits we will ever pass back
- * (via PUSHF)
- */
-#define F_MSK (FB_CF|FB_PF|FB_AF|FB_ZF|FB_SF|FB_TF|FB_IF|FB_DF|FB_OF)
-
-/* following bits masked in to a 16bit quantity */
-
-#define F_CF 0x0001 /* CARRY flag */
-#define F_PF 0x0004 /* PARITY flag */
-#define F_AF 0x0010 /* AUX flag */
-#define F_ZF 0x0040 /* ZERO flag */
-#define F_SF 0x0080 /* SIGN flag */
-#define F_TF 0x0100 /* TRAP flag */
-#define F_IF 0x0200 /* INTERRUPT ENABLE flag */
-#define F_DF 0x0400 /* DIR flag */
-#define F_OF 0x0800 /* OVERFLOW flag */
-
-#define TOGGLE_FLAG(flag) (M.x86.R_FLG ^= (flag))
-#define SET_FLAG(flag) (M.x86.R_FLG |= (flag))
-#define CLEAR_FLAG(flag) (M.x86.R_FLG &= ~(flag))
-#define ACCESS_FLAG(flag) (M.x86.R_FLG & (flag))
-#define CLEARALL_FLAG(m) (M.x86.R_FLG = 0)
-
-#define CONDITIONAL_SET_FLAG(COND,FLAG) \
- if (COND) SET_FLAG(FLAG); else CLEAR_FLAG(FLAG)
-
-#define F_PF_CALC 0x010000 /* PARITY flag has been calced */
-#define F_ZF_CALC 0x020000 /* ZERO flag has been calced */
-#define F_SF_CALC 0x040000 /* SIGN flag has been calced */
-
-#define F_ALL_CALC 0xff0000 /* All have been calced */
-
-/*
- * Emulator machine state.
- * Segment usage control.
- */
-#define SYSMODE_SEG_DS_SS 0x00000001
-#define SYSMODE_SEGOVR_CS 0x00000002
-#define SYSMODE_SEGOVR_DS 0x00000004
-#define SYSMODE_SEGOVR_ES 0x00000008
-#define SYSMODE_SEGOVR_FS 0x00000010
-#define SYSMODE_SEGOVR_GS 0x00000020
-#define SYSMODE_SEGOVR_SS 0x00000040
-#define SYSMODE_PREFIX_REPE 0x00000080
-#define SYSMODE_PREFIX_REPNE 0x00000100
-#define SYSMODE_PREFIX_DATA 0x00000200
-#define SYSMODE_PREFIX_ADDR 0x00000400
-#define SYSMODE_INTR_PENDING 0x10000000
-#define SYSMODE_EXTRN_INTR 0x20000000
-#define SYSMODE_HALTED 0x40000000
-
-#define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \
- SYSMODE_SEGOVR_CS | \
- SYSMODE_SEGOVR_DS | \
- SYSMODE_SEGOVR_ES | \
- SYSMODE_SEGOVR_FS | \
- SYSMODE_SEGOVR_GS | \
- SYSMODE_SEGOVR_SS)
-#define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \
- SYSMODE_SEGOVR_CS | \
- SYSMODE_SEGOVR_DS | \
- SYSMODE_SEGOVR_ES | \
- SYSMODE_SEGOVR_FS | \
- SYSMODE_SEGOVR_GS | \
- SYSMODE_SEGOVR_SS | \
- SYSMODE_PREFIX_DATA | \
- SYSMODE_PREFIX_ADDR)
-
-#define INTR_SYNCH 0x1
-#define INTR_ASYNCH 0x2
-#define INTR_HALTED 0x4
-
-typedef struct {
- struct i386_general_regs gen;
- struct i386_special_regs spc;
- struct i386_segment_regs seg;
- /*
- * MODE contains information on:
- * REPE prefix 2 bits repe,repne
- * SEGMENT overrides 5 bits normal,DS,SS,CS,ES
- * Delayed flag set 3 bits (zero, signed, parity)
- * reserved 6 bits
- * interrupt # 8 bits instruction raised interrupt
- * BIOS video segregs 4 bits
- * Interrupt Pending 1 bits
- * Extern interrupt 1 bits
- * Halted 1 bits
- */
- u32 mode;
- volatile int intr; /* mask of pending interrupts */
- int debug;
-#ifdef DEBUG
- int check;
- u16 saved_ip;
- u16 saved_cs;
- int enc_pos;
- int enc_str_pos;
- char decode_buf[32]; /* encoded byte stream */
- char decoded_buf[256]; /* disassembled strings */
-#endif
- u8 intno;
- u8 __pad[3];
- } X86EMU_regs;
-
-/****************************************************************************
-REMARKS:
-Structure maintaining the emulator machine state.
-
-MEMBERS:
-mem_base - Base real mode memory for the emulator
-mem_size - Size of the real mode memory block for the emulator
-private - private data pointer
-x86 - X86 registers
-****************************************************************************/
-typedef struct {
- unsigned long mem_base;
- unsigned long mem_size;
- void* private;
- X86EMU_regs x86;
- } X86EMU_sysEnv;
-
-#ifdef END_PACK
-# pragma END_PACK
-#endif
-
-/*----------------------------- Global Variables --------------------------*/
-
-#ifdef __cplusplus
-extern "C" { /* Use "C" linkage when in C++ mode */
-#endif
-
-/* Global emulator machine state.
- *
- * We keep it global to avoid pointer dereferences in the code for speed.
- */
-
-extern X86EMU_sysEnv _X86EMU_env;
-#define M _X86EMU_env
-
-/*-------------------------- Function Prototypes --------------------------*/
-
-/* Function to log information at runtime */
-
-void printk(const char *fmt, ...);
-
-#ifdef __cplusplus
-} /* End of "C" linkage for C++ */
-#endif
-
-#endif /* __X86EMU_REGS_H */
projects / people / teissler / ipfire-2.x.git / blobdiff