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dosbox-x/include/dos_inc.h
nia f02b19f07a Only use fopen64/etc on Linux and Windows 
Use the standard variants of these functions everywhere else,
since other OSes have generally implemented large file support
on top of the standard functions.

There are other exceptions... Solaris and QNX are the only others
I could find with google that hint that they implement the *64
functions, but Solaris at least has deprecated 32-bit support,
which makes it a bit irrelevant. Unfortunately I can't test on
QNX because my QNX hardware is broken. I could be useful with
fixing dosbox-x on Solaris but I'm not sure how to get endian
definitions out of it (maybe SDL could be used for this, though).

This helps me with building on NetBSD.
2020-06-03 15:31:13 +01:00

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/*
* Copyright (C) 2002-2019 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA.
*/
#ifndef DOSBOX_DOS_INC_H
#define DOSBOX_DOS_INC_H
#include <stddef.h>
#define CTBUF 127
#ifndef DOSBOX_DOS_SYSTEM_H
#include "dos_system.h"
#endif
#ifndef DOSBOX_MEM_H
#include "mem.h"
#endif
#include <stddef.h> //for offsetof
#ifdef _MSC_VER
#pragma pack (1)
#endif
struct CommandTail{
Bit8u count; /* number of bytes returned */
char buffer[CTBUF]; /* the buffer itself */
} GCC_ATTRIBUTE(packed);
#ifdef _MSC_VER
#pragma pack ()
#endif
extern Bit16u first_umb_seg;
extern Bit16u first_umb_size;
bool MEM_unmap_physmem(Bitu start,Bitu end);
bool MEM_map_RAM_physmem(Bitu start,Bitu end);
struct BuiltinFileBlob {
const char *recommended_file_name;
const unsigned char *data;
size_t length;
};
struct DOS_Date {
Bit16u year;
Bit8u month;
Bit8u day;
};
struct DOS_Version {
Bit8u major,minor,revision;
};
#ifndef MACOSX
#if defined (__APPLE__)
#define MACOSX 1
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef signed char INT8, *PINT8;
typedef signed short INT16, *PINT16;
typedef signed int INT32, *PINT32;
//typedef signed __int64 INT64, *PINT64;
typedef unsigned char UINT8, *PUINT8;
typedef unsigned short UINT16, *PUINT16;
typedef unsigned int UINT32, *PUINT32;
//typedef unsigned __int64 UINT64, *PUINT64;
#ifdef __cplusplus
}
#endif
#define SECTOR_SIZE_MAX 2048
#ifdef _MSC_VER
#pragma pack (1)
#endif
union bootSector {
struct entries {
Bit8u jump[3];
Bit8u oem_name[8];
Bit16u bytesect;
Bit8u sectclust;
Bit16u reserve_sect;
} bootdata;
Bit8u rawdata[SECTOR_SIZE_MAX];
} GCC_ATTRIBUTE(packed);
#ifdef _MSC_VER
#pragma pack ()
#endif
enum { MCB_FREE=0x0000,MCB_DOS=0x0008 };
enum { RETURN_EXIT=0,RETURN_CTRLC=1,RETURN_ABORT=2,RETURN_TSR=3};
extern Bitu DOS_FILES;
#define DOS_DRIVES 26
#define DOS_DEVICES 20
#if 0 /* ORIGINAL DEFINES FOR REFERENCE */
// dos swappable area is 0x320 bytes beyond the sysvars table
// device driver chain is inside sysvars
#define DOS_INFOBLOCK_SEG 0x80 // sysvars (list of lists)
#define DOS_CONDRV_SEG 0xa0
#define DOS_CONSTRING_SEG 0xa8
#define DOS_SDA_SEG 0xb2 // dos swappable area
#define DOS_SDA_OFS 0
#define DOS_CDS_SEG 0x108
#define DOS_MEM_START 0x158 // regression to r3437 fixes nascar 2 colors
//#define DOS_MEM_START 0x16f //First Segment that DOS can use
#define DOS_PRIVATE_SEGMENT 0xc800
#define DOS_PRIVATE_SEGMENT_END 0xd000
#endif
// dos swappable area is 0x320 bytes beyond the sysvars table
// device driver chain is inside sysvars
extern Bit16u DOS_INFOBLOCK_SEG;// 0x80 // sysvars (list of lists)
extern Bit16u DOS_CONDRV_SEG;// 0xa0
extern Bit16u DOS_CONSTRING_SEG;// 0xa8
extern Bit16u DOS_SDA_SEG;// 0xb2 // dos swappable area
extern Bit16u DOS_SDA_SEG_SIZE;
extern Bit16u DOS_SDA_OFS;// 0
extern Bit16u DOS_CDS_SEG;// 0x108
extern Bit16u DOS_MEM_START;// 0x158 // regression to r3437 fixes nascar 2 colors
extern Bit16u DOS_PRIVATE_SEGMENT;// 0xc800
extern Bit16u DOS_PRIVATE_SEGMENT_END;// 0xd000
/* internal Dos Tables */
extern DOS_File ** Files;
extern DOS_Drive * Drives[DOS_DRIVES];
extern DOS_Device * Devices[DOS_DEVICES];
extern Bit8u dos_copybuf[0x10000];
void DOS_SetError(Bit16u code);
/* File Handling Routines */
enum { STDIN=0,STDOUT=1,STDERR=2,STDAUX=3,STDPRN=4};
enum { HAND_NONE=0,HAND_FILE,HAND_DEVICE};
/* Routines for File Class */
void DOS_SetupFiles (void);
bool DOS_ReadFile(Bit16u entry,Bit8u * data,Bit16u * amount, bool fcb = false);
bool DOS_WriteFile(Bit16u entry,Bit8u * data,Bit16u * amount,bool fcb = false);
bool DOS_SeekFile(Bit16u entry,Bit32u * pos,Bit32u type,bool fcb = false);
/* ert, 20100711: Locking extensions */
bool DOS_LockFile(Bit16u entry,Bit8u mode,Bit32u pos,Bit32u size);
bool DOS_CloseFile(Bit16u entry,bool fcb = false);
bool DOS_FlushFile(Bit16u entry);
bool DOS_DuplicateEntry(Bit16u entry,Bit16u * newentry);
bool DOS_ForceDuplicateEntry(Bit16u entry,Bit16u newentry);
bool DOS_GetFileDate(Bit16u entry, Bit16u* otime, Bit16u* odate);
bool DOS_SetFileDate(Bit16u entry, Bit16u ntime, Bit16u ndate);
/* Routines for Drive Class */
bool DOS_OpenFile(char const * name,Bit8u flags,Bit16u * entry,bool fcb = false);
bool DOS_OpenFileExtended(char const * name, Bit16u flags, Bit16u createAttr, Bit16u action, Bit16u *entry, Bit16u* status);
bool DOS_CreateFile(char const * name,Bit16u attributes,Bit16u * entry, bool fcb = false);
bool DOS_UnlinkFile(char const * const name);
bool DOS_GetSFNPath(char const * const path, char *SFNpath, bool LFN);
bool DOS_FindFirst(char *search,Bit16u attr,bool fcb_findfirst=false);
bool DOS_FindNext(void);
bool DOS_Canonicalize(char const * const name,char * const big);
bool DOS_CreateTempFile(char * const name,Bit16u * entry);
bool DOS_FileExists(char const * const name);
/* Helper Functions */
bool DOS_MakeName(char const * const name,char * const fullname,Bit8u * drive);
/* Drive Handing Routines */
Bit8u DOS_GetDefaultDrive(void);
void DOS_SetDefaultDrive(Bit8u drive);
bool DOS_SetDrive(Bit8u drive);
bool DOS_GetCurrentDir(Bit8u drive,char * const buffer, bool LFN);
bool DOS_ChangeDir(char const * const dir);
bool DOS_MakeDir(char const * const dir);
bool DOS_RemoveDir(char const * const dir);
bool DOS_Rename(char const * const oldname,char const * const newname);
bool DOS_GetFreeDiskSpace(Bit8u drive,Bit16u * bytes,Bit8u * sectors,Bit16u * clusters,Bit16u * free);
bool DOS_GetFreeDiskSpace32(Bit8u drive,Bit32u * bytes,Bit32u * sectors,Bit32u * clusters,Bit32u * free);
bool DOS_GetFileAttr(char const * const name,Bit16u * attr);
bool DOS_SetFileAttr(char const * const name,Bit16u attr);
bool DOS_GetFileAttrEx(char const* const name, struct stat *status, Bit8u hdrive=-1);
unsigned long DOS_GetCompressedFileSize(char const* const name);
#if defined (WIN32)
HANDLE DOS_CreateOpenFile(char const* const name);
#endif
/* IOCTL Stuff */
bool DOS_IOCTL(void);
bool DOS_GetSTDINStatus();
Bit8u DOS_FindDevice(char const * name);
void DOS_SetupDevices(void);
/* Execute and new process creation */
bool DOS_NewPSP(Bit16u segment,Bit16u size);
bool DOS_ChildPSP(Bit16u segment,Bit16u size);
bool DOS_Execute(const char* name, PhysPt block_pt, Bit8u flags);
void DOS_Terminate(Bit16u pspseg,bool tsr,Bit8u exitcode);
/* Memory Handling Routines */
void DOS_SetupMemory(void);
bool DOS_AllocateMemory(Bit16u * segment,Bit16u * blocks);
bool DOS_ResizeMemory(Bit16u segment,Bit16u * blocks);
bool DOS_FreeMemory(Bit16u segment);
void DOS_FreeProcessMemory(Bit16u pspseg);
Bit16u DOS_GetMemory(Bit16u pages,const char *who=NULL);
bool DOS_SetMemAllocStrategy(Bit16u strat);
Bit16u DOS_GetMemAllocStrategy(void);
void DOS_BuildUMBChain(bool umb_active,bool ems_active);
bool DOS_LinkUMBsToMemChain(Bit16u linkstate);
/* FCB stuff */
bool DOS_FCBOpen(Bit16u seg,Bit16u offset);
bool DOS_FCBCreate(Bit16u seg,Bit16u offset);
bool DOS_FCBClose(Bit16u seg,Bit16u offset);
bool DOS_FCBFindFirst(Bit16u seg,Bit16u offset);
bool DOS_FCBFindNext(Bit16u seg,Bit16u offset);
Bit8u DOS_FCBRead(Bit16u seg,Bit16u offset, Bit16u recno);
Bit8u DOS_FCBWrite(Bit16u seg,Bit16u offset,Bit16u recno);
Bit8u DOS_FCBRandomRead(Bit16u seg,Bit16u offset,Bit16u * numRec,bool restore);
Bit8u DOS_FCBRandomWrite(Bit16u seg,Bit16u offset,Bit16u * numRec,bool restore);
bool DOS_FCBGetFileSize(Bit16u seg,Bit16u offset);
bool DOS_FCBDeleteFile(Bit16u seg,Bit16u offset);
bool DOS_FCBRenameFile(Bit16u seg, Bit16u offset);
void DOS_FCBSetRandomRecord(Bit16u seg, Bit16u offset);
Bit8u FCB_Parsename(Bit16u seg,Bit16u offset,Bit8u parser ,char *string, Bit8u *change);
bool DOS_GetAllocationInfo(Bit8u drive,Bit16u * _bytes_sector,Bit8u * _sectors_cluster,Bit16u * _total_clusters);
/* Extra DOS Interrupts */
void DOS_SetupMisc(void);
/* The DOS Tables */
void DOS_SetupTables(void);
/* Internal DOS Setup Programs */
void DOS_SetupPrograms(void);
/* Initialize Keyboard Layout */
void DOS_KeyboardLayout_Init(Section* sec);
bool DOS_LayoutKey(Bitu key, Bit8u flags1, Bit8u flags2, Bit8u flags3);
enum {
KEYB_NOERROR=0,
KEYB_FILENOTFOUND,
KEYB_INVALIDFILE,
KEYB_LAYOUTNOTFOUND,
KEYB_INVALIDCPFILE
};
static INLINE Bit16u long2para(Bit32u size) {
if (size>0xFFFF0) return 0xffff;
if (size&0xf) return (Bit16u)((size>>4)+1);
else return (Bit16u)(size>>4);
}
static INLINE Bit16u DOS_PackTime(Bit16u hour,Bit16u min,Bit16u sec) {
return (hour&0x1f)<<11 | (min&0x3f) << 5 | ((sec/2)&0x1f);
}
static INLINE Bit16u DOS_PackDate(Bit16u year,Bit16u mon,Bit16u day) {
return ((year-1980)&0x7f)<<9 | (mon&0x3f) << 5 | (day&0x1f);
}
/* fopen64, ftello64, fseeko64 */
#if defined(__linux__)
#define fseek_ofs_t long
#elif defined (_MSC_VER)
#define fopen64 fopen
#if (_MSC_VER >= 1400)
#define ftello64 _ftelli64
#define fseeko64 _fseeki64
#define fseek_ofs_t __int64
#else
#define ftello64 ftell
#define fseeko64 fseek
#define fseek_ofs_t long
#endif
#else
#define fopen64 fopen
#define ftello64 ftell
#define fseeko64 fseek
#define fseek_ofs_t off_t
#endif
/* Dos Error Codes */
#define DOSERR_NONE 0
#define DOSERR_FUNCTION_NUMBER_INVALID 1
#define DOSERR_FILE_NOT_FOUND 2
#define DOSERR_PATH_NOT_FOUND 3
#define DOSERR_TOO_MANY_OPEN_FILES 4
#define DOSERR_ACCESS_DENIED 5
#define DOSERR_INVALID_HANDLE 6
#define DOSERR_MCB_DESTROYED 7
#define DOSERR_INSUFFICIENT_MEMORY 8
#define DOSERR_MB_ADDRESS_INVALID 9
#define DOSERR_ENVIRONMENT_INVALID 10
#define DOSERR_FORMAT_INVALID 11
#define DOSERR_ACCESS_CODE_INVALID 12
#define DOSERR_DATA_INVALID 13
#define DOSERR_RESERVED 14
#define DOSERR_FIXUP_OVERFLOW 14
#define DOSERR_INVALID_DRIVE 15
#define DOSERR_REMOVE_CURRENT_DIRECTORY 16
#define DOSERR_NOT_SAME_DEVICE 17
#define DOSERR_NO_MORE_FILES 18
#define DOSERR_WRITE_PROTECTED 19
#define DOSERR_FILE_ALREADY_EXISTS 80
/* Remains some classes used to access certain things */
#define sOffset(s,m) ((char*)&(((s*)NULL)->m)-(char*)NULL)
#define sGet(s,m) GetIt(sizeof(((s *)&pt)->m),(PhysPt)sOffset(s,m))
#define sSave(s,m,val) SaveIt(sizeof(((s *)&pt)->m),(PhysPt)sOffset(s,m),val)
class MemStruct {
public:
inline Bit32u GetIt(const Bit32u size, const PhysPt addr) {
switch (size) {
case 1:return mem_readb(pt+addr);
case 2:return mem_readw(pt+addr);
case 4:return mem_readd(pt+addr);
}
return 0;
}
inline void SaveIt(const Bit32u size, const PhysPt addr, const Bit32u val) {
switch (size) {
case 1:mem_writeb(pt+addr,(Bit8u)val);break;
case 2:mem_writew(pt+addr,(Bit16u)val);break;
case 4:mem_writed(pt+addr,(Bit32u)val);break;
}
}
inline void SetPt(const Bit16u seg) { pt=PhysMake(seg,0);}
inline void SetPt(const Bit16u seg, const Bit16u off) { pt=PhysMake(seg,off);}
inline void SetPt(const RealPt addr) { pt=Real2Phys(addr);}
inline PhysPt GetPtPhys(void) const { return pt; }
inline void SetPtPhys(const PhysPt _pt) { pt=_pt; }
protected:
PhysPt pt;
};
class DOS_PSP :public MemStruct {
public:
DOS_PSP (Bit16u segment) { SetPt(segment);seg=segment;};
void MakeNew (Bit16u mem_size);
void CopyFileTable (DOS_PSP* srcpsp,bool createchildpsp);
Bit16u FindFreeFileEntry (void);
void CloseFiles (void);
void SaveVectors (void);
void RestoreVectors (void);
void SetSize (Bit16u size) { sSave(sPSP,next_seg,size); };
Bit16u GetSize (void) { return (Bit16u)sGet(sPSP,next_seg); };
void SetEnvironment (Bit16u envseg) { sSave(sPSP,environment,envseg); };
Bit16u GetEnvironment (void) { return (Bit16u)sGet(sPSP,environment); };
Bit16u GetSegment (void) { return seg; };
void SetFileHandle (Bit16u index, Bit8u handle);
Bit8u GetFileHandle (Bit16u index);
void SetParent (Bit16u parent) { sSave(sPSP,psp_parent,parent); };
Bit16u GetParent (void) { return (Bit16u)sGet(sPSP,psp_parent); };
void SetStack (RealPt stackpt) { sSave(sPSP,stack,stackpt); };
RealPt GetStack (void) { return sGet(sPSP,stack); };
void SetInt22 (RealPt int22pt) { sSave(sPSP,int_22,int22pt); };
RealPt GetInt22 (void) { return sGet(sPSP,int_22); };
void SetFCB1 (RealPt src);
void SetFCB2 (RealPt src);
void SetCommandTail (RealPt src);
void StoreCommandTail (void);
void RestoreCommandTail (void);
bool SetNumFiles (Bit16u fileNum);
Bit16u FindEntryByHandle (Bit8u handle);
private:
#ifdef _MSC_VER
#pragma pack(1)
#endif
struct sPSP {
Bit8u exit[2]; /* CP/M-like exit poimt */
Bit16u next_seg; /* Segment of first byte beyond memory allocated or program */
Bit8u fill_1; /* single char fill */
Bit8u far_call; /* far call opcode */
RealPt cpm_entry; /* CPM Service Request address*/
RealPt int_22; /* Terminate Address */
RealPt int_23; /* Break Address */
RealPt int_24; /* Critical Error Address */
Bit16u psp_parent; /* Parent PSP Segment */
Bit8u files[20]; /* File Table - 0xff is unused */
Bit16u environment; /* Segment of evironment table */
RealPt stack; /* SS:SP Save point for int 0x21 calls */
Bit16u max_files; /* Maximum open files */
RealPt file_table; /* Pointer to File Table PSP:0x18 */
RealPt prev_psp; /* Pointer to previous PSP */
Bit8u interim_flag;
Bit8u truename_flag;
Bit16u nn_flags;
Bit16u dos_version;
Bit8u fill_2[14]; /* Lot's of unused stuff i can't care aboue */
Bit8u service[3]; /* INT 0x21 Service call int 0x21;retf; */
Bit8u fill_3[9]; /* This has some blocks with FCB info */
Bit8u fcb1[16]; /* first FCB */
Bit8u fcb2[16]; /* second FCB */
Bit8u fill_4[4]; /* unused */
CommandTail cmdtail;
} GCC_ATTRIBUTE(packed);
#ifdef _MSC_VER
#pragma pack()
#endif
Bit16u seg;
public:
static Bit16u rootpsp;
};
class DOS_ParamBlock:public MemStruct {
public:
DOS_ParamBlock(PhysPt addr) {pt=addr;}
void Clear(void);
void LoadData(void);
void SaveData(void); /* Save it as an exec block */
#ifdef _MSC_VER
#pragma pack (1)
#endif
struct sOverlay {
Bit16u loadseg;
Bit16u relocation;
} GCC_ATTRIBUTE(packed);
struct sExec {
Bit16u envseg;
RealPt cmdtail;
RealPt fcb1;
RealPt fcb2;
RealPt initsssp;
RealPt initcsip;
}GCC_ATTRIBUTE(packed);
#ifdef _MSC_VER
#pragma pack()
#endif
sExec exec = {};
sOverlay overlay = {};
};
class DOS_InfoBlock:public MemStruct {
public:
DOS_InfoBlock() : seg(0) {};
void SetLocation(Bit16u segment);
void SetFirstDPB(Bit32u _first_dpb);
void SetFirstMCB(Bit16u _firstmcb);
void SetBuffers(Bit16u x,Bit16u y);
void SetCurDirStruct(Bit32u _curdirstruct);
void SetFCBTable(Bit32u _fcbtable);
void SetDeviceChainStart(Bit32u _devchain);
void SetDiskBufferHeadPt(Bit32u _dbheadpt);
void SetStartOfUMBChain(Bit16u _umbstartseg);
void SetUMBChainState(Bit8u _umbchaining);
void SetBlockDevices(Bit8u _count);
Bit16u GetStartOfUMBChain(void);
Bit8u GetUMBChainState(void);
RealPt GetPointer(void);
Bit32u GetDeviceChain(void);
#ifdef _MSC_VER
#pragma pack(1)
#endif
struct sDIB {
Bit8u unknown1[4];
Bit16u magicWord; // -0x22 needs to be 1
Bit8u unknown2[8];
Bit16u regCXfrom5e; // -0x18 CX from last int21/ah=5e
Bit16u countLRUcache; // -0x16 LRU counter for FCB caching
Bit16u countLRUopens; // -0x14 LRU counter for FCB openings
Bit8u stuff[6]; // -0x12 some stuff, hopefully never used....
Bit16u sharingCount; // -0x0c sharing retry count
Bit16u sharingDelay; // -0x0a sharing retry delay
RealPt diskBufPtr; // -0x08 pointer to disk buffer
Bit16u ptrCONinput; // -0x04 pointer to con input
Bit16u firstMCB; // -0x02 first memory control block
RealPt firstDPB; // 0x00 first drive parameter block
RealPt firstFileTable; // 0x04 first system file table
RealPt activeClock; // 0x08 active clock device header
RealPt activeCon; // 0x0c active console device header
Bit16u maxSectorLength; // 0x10 maximum bytes per sector of any block device;
RealPt diskInfoBuffer; // 0x12 pointer to disk info buffer
RealPt curDirStructure; // 0x16 pointer to current array of directory structure
RealPt fcbTable; // 0x1a pointer to system FCB table
Bit16u protFCBs; // 0x1e protected fcbs
Bit8u blockDevices; // 0x20 installed block devices
Bit8u lastdrive; // 0x21 lastdrive
Bit32u nulNextDriver; // 0x22 NUL driver next pointer
Bit16u nulAttributes; // 0x26 NUL driver aattributes
Bit16u nulStrategy; // 0x28 NUL driver strategy routine
Bit16u nulInterrupt; // 0x2A NUL driver interrupt routine
Bit8u nulString[8]; // 0x2c NUL driver name string
Bit8u joindedDrives; // 0x34 joined drives
Bit16u specialCodeSeg; // 0x35 special code segment
RealPt setverPtr; // 0x37 pointer to setver
Bit16u a20FixOfs; // 0x3b a20 fix routine offset
Bit16u pspLastIfHMA; // 0x3d psp of last program (if dos in hma)
Bit16u buffers_x; // 0x3f x in BUFFERS x,y
Bit16u buffers_y; // 0x41 y in BUFFERS x,y
Bit8u bootDrive; // 0x43 boot drive
Bit8u useDwordMov; // 0x44 use dword moves
Bit16u extendedSize; // 0x45 size of extended memory
Bit32u diskBufferHeadPt; // 0x47 pointer to least-recently used buffer header
Bit16u dirtyDiskBuffers; // 0x4b number of dirty disk buffers
Bit32u lookaheadBufPt; // 0x4d pointer to lookahead buffer
Bit16u lookaheadBufNumber; // 0x51 number of lookahead buffers
Bit8u bufferLocation; // 0x53 workspace buffer location
Bit32u workspaceBuffer; // 0x54 pointer to workspace buffer
Bit8u unknown3[11]; // 0x58
Bit8u chainingUMB; // 0x63 bit0: UMB chain linked to MCB chain
Bit16u minMemForExec; // 0x64 minimum paragraphs needed for current program
Bit16u startOfUMBChain; // 0x66 segment of first UMB-MCB
Bit16u memAllocScanStart; // 0x68 start paragraph for memory allocation
} GCC_ATTRIBUTE(packed);
#ifdef _MSC_VER
#pragma pack ()
#endif
Bit16u seg;
};
class DOS_DTA:public MemStruct{
public:
DOS_DTA(RealPt addr) { SetPt(addr); }
int GetFindData(int fmt,char * finddata,int *c);
void SetupSearch(Bit8u _sdrive,Bit8u _sattr,char * pattern);
void SetResult(const char * _name,const char * _lname,Bit32u _size,Bit16u _date,Bit16u _time,Bit8u _attr);
Bit8u GetSearchDrive(void);
void GetSearchParams(Bit8u & _sattr,char * _spattern,bool lfn);
void GetResult(char * _name,char * _lname,Bit32u & _size,Bit16u & _date,Bit16u & _time,Bit8u & _attr);
void SetDirID(Bit16u entry) { sSave(sDTA,dirID,entry); };
void SetDirIDCluster(Bit32u entry) { sSave(sDTA,dirCluster,entry); };
Bit16u GetDirID(void) { return (Bit16u)sGet(sDTA,dirID); };
Bit32u GetDirIDCluster(void) { return (Bit32u)sGet(sDTA,dirCluster); };
Bit8u GetAttr(void) { return (Bit8u)sGet(sDTA,sattr); }
private:
#ifdef _MSC_VER
#pragma pack(1)
#endif
struct sDTA {
Bit8u sdrive; /* The Drive the search is taking place */
Bit8u spname[8]; /* The Search pattern for the filename */
Bit8u spext[3]; /* The Search pattern for the extension */
Bit8u sattr; /* The Attributes that need to be found */
Bit16u dirID; /* custom: dir-search ID for multiple searches at the same time */
Bit32u dirCluster; /* custom (drive_fat only): cluster number for multiple searches at the same time. 32-bit wide on FAT32 aware MS-DOS 7.1 or higher. */
Bit8u fill[2];
Bit8u attr;
Bit16u time;
Bit16u date;
Bit32u size;
char name[DOS_NAMELENGTH_ASCII];
} GCC_ATTRIBUTE(packed);
static_assert(offsetof(sDTA,dirID) == 0x0D,"oops");
static_assert(offsetof(sDTA,dirCluster) == 0x0F,"oops");
static_assert(offsetof(sDTA,fill) == 0x13,"oops");
static_assert(offsetof(sDTA,attr) == 0x15,"oops");
#ifdef _MSC_VER
#pragma pack()
#endif
};
class DOS_FCB: public MemStruct {
public:
DOS_FCB(Bit16u seg,Bit16u off,bool allow_extended=true);
void Create(bool _extended);
void SetName(Bit8u _drive, const char* _fname, const char* _ext);
void SetSizeDateTime(Bit32u _size,Bit16u _date,Bit16u _time);
void GetSizeDateTime(Bit32u & _size,Bit16u & _date,Bit16u & _time);
void GetVolumeName(char * fillname);
void GetName(char * fillname);
void FileOpen(Bit8u _fhandle);
void FileClose(Bit8u & _fhandle);
void GetRecord(Bit16u & _cur_block,Bit8u & _cur_rec);
void SetRecord(Bit16u _cur_block,Bit8u _cur_rec);
void GetSeqData(Bit8u & _fhandle,Bit16u & _rec_size);
void SetSeqData(Bit8u _fhandle,Bit16u _rec_size);
void GetRandom(Bit32u & _random);
void SetRandom(Bit32u _random);
Bit8u GetDrive(void);
bool Extended(void);
void GetAttr(Bit8u & attr);
void SetAttr(Bit8u attr);
void SetResult(Bit32u size,Bit16u date,Bit16u time,Bit8u attr);
bool Valid(void);
void ClearBlockRecsize(void);
private:
bool extended = false;
PhysPt real_pt;
#ifdef _MSC_VER
#pragma pack (1)
#endif
struct sFCB {
Bit8u drive; /* Drive number 0=default, 1=A, etc */
Bit8u filename[8]; /* Space padded name */
Bit8u ext[3]; /* Space padded extension */
Bit16u cur_block; /* Current Block */
Bit16u rec_size; /* Logical record size */
Bit32u filesize; /* File Size */
Bit16u date;
Bit16u time;
/* Reserved Block should be 8 bytes */
Bit8u sft_entries;
Bit8u share_attributes;
Bit8u extra_info;
/* Maybe swap file_handle and sft_entries now that fcbs
* aren't stored in the psp filetable anymore */
Bit8u file_handle;
Bit8u reserved[4];
/* end */
Bit8u cur_rec; /* Current record in current block */
Bit32u rndm; /* Current relative record number */
} GCC_ATTRIBUTE(packed);
#ifdef _MSC_VER
#pragma pack ()
#endif
};
class DOS_MCB : public MemStruct{
public:
DOS_MCB(Bit16u seg) { SetPt(seg); }
void SetFileName(const char * const _name) { MEM_BlockWrite(pt+offsetof(sMCB,filename),_name,8); }
void GetFileName(char * const _name) { MEM_BlockRead(pt+offsetof(sMCB,filename),_name,8);_name[8]=0;}
void SetType(Bit8u _type) { sSave(sMCB,type,_type);}
void SetSize(Bit16u _size) { sSave(sMCB,size,_size);}
void SetPSPSeg(Bit16u _pspseg) { sSave(sMCB,psp_segment,_pspseg);}
Bit8u GetType(void) { return (Bit8u)sGet(sMCB,type);}
Bit16u GetSize(void) { return (Bit16u)sGet(sMCB,size);}
Bit16u GetPSPSeg(void) { return (Bit16u)sGet(sMCB,psp_segment);}
private:
#ifdef _MSC_VER
#pragma pack (1)
#endif
struct sMCB {
Bit8u type;
Bit16u psp_segment;
Bit16u size;
Bit8u unused[3];
Bit8u filename[8];
} GCC_ATTRIBUTE(packed);
#ifdef _MSC_VER
#pragma pack ()
#endif
};
class DOS_SDA : public MemStruct {
public:
DOS_SDA(Bit16u _seg,Bit16u _offs) { SetPt(_seg,_offs); }
void Init();
void SetDrive(Bit8u _drive) { sSave(sSDA,current_drive, _drive); }
void SetDTA(Bit32u _dta) { sSave(sSDA,current_dta, _dta); }
void SetPSP(Bit16u _psp) { sSave(sSDA,current_psp, _psp); }
Bit8u GetDrive(void) { return (Bit8u)sGet(sSDA,current_drive); }
Bit16u GetPSP(void) { return (Bit16u)sGet(sSDA,current_psp); }
Bit32u GetDTA(void) { return (Bit32u)sGet(sSDA,current_dta); }
private:
#ifdef _MSC_VER
#pragma pack (1)
#endif
struct sSDA {
Bit8u crit_error_flag; /* 0x00 Critical Error Flag */
Bit8u inDOS_flag; /* 0x01 InDOS flag (count of active INT 21 calls) */
Bit8u drive_crit_error; /* 0x02 Drive on which current critical error occurred or FFh */
Bit8u locus_of_last_error; /* 0x03 locus of last error */
Bit16u extended_error_code; /* 0x04 extended error code of last error */
Bit8u suggested_action; /* 0x06 suggested action for last error */
Bit8u error_class; /* 0x07 class of last error*/
Bit32u last_error_pointer; /* 0x08 ES:DI pointer for last error */
Bit32u current_dta; /* 0x0C current DTA (Disk Transfer Address) */
Bit16u current_psp; /* 0x10 current PSP */
Bit16u sp_int_23; /* 0x12 stores SP across an INT 23 */
Bit16u return_code; /* 0x14 return code from last process termination (zerod after reading with AH=4Dh) */
Bit8u current_drive; /* 0x16 current drive */
Bit8u extended_break_flag; /* 0x17 extended break flag */
Bit8u fill[2]; /* 0x18 flag: code page switching || flag: copy of previous byte in case of INT 24 Abort*/
} GCC_ATTRIBUTE(packed);
#ifdef _MSC_VER
#pragma pack()
#endif
};
extern DOS_InfoBlock dos_infoblock;
struct DOS_Block {
DOS_Date date = {};
DOS_Version version = {};
Bit16u firstMCB = 0;
Bit16u errorcode = 0;
Bit16u psp();//{return DOS_SDA(DOS_SDA_SEG,DOS_SDA_OFS).GetPSP();};
void psp(Bit16u _seg);//{ DOS_SDA(DOS_SDA_SEG,DOS_SDA_OFS).SetPSP(_seg);};
RealPt dta();//{return DOS_SDA(DOS_SDA_SEG,DOS_SDA_OFS).GetDTA();};
void dta(RealPt _dta);//{DOS_SDA(DOS_SDA_SEG,DOS_SDA_OFS).SetDTA(_dta);};
Bit8u return_code = 0, return_mode = 0;
Bit8u current_drive = 0;
bool verify = false;
bool breakcheck = false;
bool echo = false; // if set to true dev_con::read will echo input
bool direct_output = false;
bool internal_output = false;
struct {
RealPt mediaid = 0;
RealPt tempdta = 0;
RealPt tempdta_fcbdelete = 0;
RealPt dbcs = 0;
RealPt filenamechar = 0;
RealPt collatingseq = 0;
RealPt upcase = 0;
Bit8u* country = NULL;//Will be copied to dos memory. resides in real mem
Bit16u dpb = 0; //Fake Disk parameter system using only the first entry so the drive letter matches
Bit16u dpb_size = 0x21; // bytes per DPB entry (MS-DOS 4.x-6.x size)
Bit16u mediaid_offset = 0x17; // media ID offset in DPB (MS-DOS 4.x-6.x case)
} tables;
Bit16u loaded_codepage = 0;
};
extern DOS_Block dos;
static INLINE Bit8u RealHandle(Bit16u handle) {
DOS_PSP psp(dos.psp());
return psp.GetFileHandle(handle);
}
struct DOS_GetMemLog_Entry {
Bit16u segbase = 0;
Bit16u pages = 0;
std::string who;
};
extern std::list<DOS_GetMemLog_Entry> DOS_GetMemLog;
#endif
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