155 lines
5.9 KiB
C
155 lines
5.9 KiB
C
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/****************************************************************************
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*
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* BIOS emulator and interface
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* to Realmode X86 Emulator Library
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*
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* Copyright (C) 1996-1999 SciTech Software, Inc.
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*
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* ========================================================================
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of the authors not be used
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* in advertising or publicity pertaining to distribution of the software
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* without specific, written prior permission. The authors makes no
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* representations about the suitability of this software for any purpose.
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* It is provided "as is" without express or implied warranty.
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*
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* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*
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* ========================================================================
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*
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* Language: ANSI C
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* Environment: Any
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* Developer: Kendall Bennett
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*
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* Description: Header file for the real mode x86 BIOS emulator, which is
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* used to warmboot any number of VGA compatible PCI/AGP
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* controllers under any OS, on any processor family that
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* supports PCI. We also allow the user application to call
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* real mode BIOS functions and Int 10h functions (including
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* the VESA BIOS).
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*
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****************************************************************************/
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#ifndef __BIOSEMU_H
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#define __BIOSEMU_H
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#include "x86emu.h"
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#include "pmapi.h"
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#include "pcilib.h"
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/*---------------------- Macros and type definitions ----------------------*/
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#pragma pack(1)
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/****************************************************************************
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REMARKS:
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Data structure used to describe the details specific to a particular VGA
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controller. This information is used to allow the VGA controller to be
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swapped on the fly within the BIOS emulator.
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HEADER:
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biosemu.h
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MEMBERS:
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pciInfo - PCI device information block for the controller
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BIOSImage - Pointer to a read/write copy of the BIOS image
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BIOSImageLen - Length of the BIOS image
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LowMem - Copy of key low memory areas
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****************************************************************************/
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typedef struct {
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PCIDeviceInfo *pciInfo;
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void *BIOSImage;
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ulong BIOSImageLen;
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uchar LowMem[1536];
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} BE_VGAInfo;
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/****************************************************************************
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REMARKS:
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Data structure used to describe the details for the BIOS emulator system
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environment as used by the X86 emulator library.
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HEADER:
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biosemu.h
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MEMBERS:
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vgaInfo - VGA BIOS information structure
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biosmem_base - Base of the BIOS image
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biosmem_limit - Limit of the BIOS image
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busmem_base - Base of the VGA bus memory
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****************************************************************************/
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typedef struct {
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BE_VGAInfo vgaInfo;
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ulong biosmem_base;
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ulong biosmem_limit;
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ulong busmem_base;
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} BE_sysEnv;
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/****************************************************************************
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REMARKS:
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Structure defining all the BIOS Emulator API functions as exported from
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the Binary Portable DLL.
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{secret}
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****************************************************************************/
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typedef struct {
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ulong dwSize;
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ibool (PMAPIP BE_init)(u32 debugFlags,int memSize,BE_VGAInfo *info);
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void (PMAPIP BE_setVGA)(BE_VGAInfo *info);
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void (PMAPIP BE_getVGA)(BE_VGAInfo *info);
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void * (PMAPIP BE_mapRealPointer)(uint r_seg,uint r_off);
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void * (PMAPIP BE_getVESABuf)(uint *len,uint *rseg,uint *roff);
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void (PMAPIP BE_callRealMode)(uint seg,uint off,RMREGS *regs,RMSREGS *sregs);
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int (PMAPIP BE_int86)(int intno,RMREGS *in,RMREGS *out);
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int (PMAPIP BE_int86x)(int intno,RMREGS *in,RMREGS *out,RMSREGS *sregs);
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void * reserved1;
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void (PMAPIP BE_exit)(void);
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} BE_exports;
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/****************************************************************************
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REMARKS:
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Function pointer type for the Binary Portable DLL initialisation entry point.
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{secret}
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****************************************************************************/
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typedef BE_exports * (PMAPIP BE_initLibrary_t)(PM_imports *PMImp);
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#pragma pack()
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/*---------------------------- Global variables ---------------------------*/
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#ifdef __cplusplus
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extern "C" { /* Use "C" linkage when in C++ mode */
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#endif
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/* {secret} Global BIOS emulator system environment */
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extern BE_sysEnv _BE_env;
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/*-------------------------- Function Prototypes --------------------------*/
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/* BIOS emulator library entry points */
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ibool PMAPI BE_init(u32 debugFlags,int memSize,BE_VGAInfo *info);
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void PMAPI BE_setVGA(BE_VGAInfo *info);
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void PMAPI BE_getVGA(BE_VGAInfo *info);
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void PMAPI BE_setDebugFlags(u32 debugFlags);
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void * PMAPI BE_mapRealPointer(uint r_seg,uint r_off);
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void * PMAPI BE_getVESABuf(uint *len,uint *rseg,uint *roff);
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void PMAPI BE_callRealMode(uint seg,uint off,RMREGS *regs,RMSREGS *sregs);
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int PMAPI BE_int86(int intno,RMREGS *in,RMREGS *out);
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int PMAPI BE_int86x(int intno,RMREGS *in,RMREGS *out,RMSREGS *sregs);
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void PMAPI BE_exit(void);
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#ifdef __cplusplus
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} /* End of "C" linkage for C++ */
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#endif
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#endif /* __BIOSEMU_H */
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