valter/dosbox-staging
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Removed some tables and using new packed structure stuff.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@155
This commit is contained in:
Sjoerd van der Berg 2002-08-19 10:50:05 +00:00
parent 4d7db67896
commit 3342e8bbc2
1 changed files with 33 additions and 31 deletions
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64
include/dos_inc.h
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@ -22,13 +22,12 @@
#include <dos_system.h>
#include <mem.h>
#if defined (_MSC_VER)
#pragma pack(1)
#endif
#pragma pack (push,1)
struct CommandTail{
Bit8u count; /* number of bytes returned */
char buffer[127]; /* the buffer itself */
};
} GCC_ATTRIBUTE(packed);
struct PSP {
Bit8u exit[2]; /* CP/M-like exit poimt */
@ -56,7 +55,7 @@ struct PSP {
CommandTail cmdtail;
};
} GCC_ATTRIBUTE(packed);
struct ParamBlock {
union {
@ -73,7 +72,8 @@ struct ParamBlock {
RealPt initcsip;
} exec;
};
};
} GCC_ATTRIBUTE(packed);
struct MCB {
Bit8u type;
@ -81,27 +81,11 @@ struct MCB {
Bit16u size;
Bit8u unused[3];
Bit8u filename[8];
};
} GCC_ATTRIBUTE(packed);
#pragma pack (pop)
struct FCB {
Bit8u drive; //0 is current drive. when opened 0 is replaced by drivenumber
Bit8u filename[8]; //spacepadded to fit
Bit8u ext[3]; //spacepadded to fit
Bit16u current_block; // set to 0 by open
Bit16u record_size; // used by reads Set to 80h by OPEN function
Bit32u filesize; //in bytes In this field, the first word is the low-order part of the size
Bit16u date;
Bit16u time;
Bit8u reserved[8];
Bit8u current_relative_record_number; //open doesn't set this
Bit32u rel_record; //open does not handle this
}
#if defined (_MSC_VER)
;
#pragma pack()
#else
__attribute__ ((packed));
#endif
struct DOS_Date {
Bit16u year;
@ -130,7 +114,6 @@ struct DOS_Block {
struct {
RealPt indosflag;
} tables;
};
enum { MCB_FREE=0x0000,MCB_DOS=0x0008 };
@ -162,20 +145,21 @@ bool DOS_WriteFile(Bit16u handle,Bit8u * data,Bit16u * amount);
bool DOS_SeekFile(Bit16u handle,Bit32u * pos,Bit32u type);
bool DOS_CloseFile(Bit16u handle);
bool DOS_DuplicateEntry(Bit16u entry,Bit16u * newentry);
bool DOS_ForceDuplicateEntry(Bit16u entry,Bit16u newentry);
/* Routines for Drive Class */
bool DOS_OpenFile(char * name,Bit8u flags,Bit16u * entry);
bool DOS_CreateFile(char * name,Bit16u attribute,Bit16u * entry);
bool DOS_UnlinkFile(char * name);
bool DOS_FindFirst(char *search,Bit16u attr);
bool DOS_FindNext(void);
bool DOS_Canonicalize(char * name,Bit8u * big);
bool DOS_Canonicalize(char * name,char * big);
bool DOS_CreateTempFile(char * name,Bit16u * entry);
bool DOS_FileExists(char * name);
/* Drive Handing Routines */
Bit8u DOS_GetDefaultDrive(void);
void DOS_SetDefaultDrive(Bit8u drive);
bool DOS_SetDrive(Bit8u drive);
bool DOS_GetCurrentDir(Bit8u drive,Bit8u * buffer);
bool DOS_GetCurrentDir(Bit8u drive,char * bugger);
bool DOS_ChangeDir(char * dir);
bool DOS_MakeDir(char * dir);
bool DOS_RemoveDir(char * dir);
@ -223,7 +207,7 @@ INLINE Bit16u long2para(Bit32u size) {
};
INLINE Bit8u RealHandle(Bit16u handle) {
PSP * psp=(PSP *)real_off(dos.psp,0);
PSP * psp=(PSP *)HostMake(dos.psp,0);
if (handle>=psp->max_files) return DOS_FILES;
return mem_readb(Real2Phys(psp->file_table)+handle);
};
@ -257,7 +241,7 @@ public:
off=pt;
}
DOS_FCB(Bit16u seg, Bit16u offset){
off=Real2Phys(RealMake(seg,offset));
off=PhysMake(seg,offset);
}
void Set_drive(Bit8u a);
void Set_filename(char* a); //writes an the first 8 bytes of a as the filename
@ -282,6 +266,24 @@ private:
class DOS_ParamBlock {
public:
DOS_ParamBlock(PhysPt pt){
off=pt;
};
void InitExec(RealPt cmdtail);
Bit16u loadseg(void);
Bit16u relocation(void);
Bit16u envseg(void);
RealPt initsssp(void);
RealPt initcsip(void);
RealPt fcb1(void);
RealPt fcb2(void);
RealPt cmdtail(void);
private:
PhysPt off;
};
#endif