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#ifndef SFTSR_H
#define SFTSR_H
#include <stdbool.h>
#include <stdint.h>
#include "vbox.h"
#include "int21dos.h"
#define VERSION_MAJOR 0
#define VERSION_MINOR 1
#define LASTDRIVE 'Z'
#define MAX_NUM_DRIVE (LASTDRIVE - 'A')
#define NUM_DRIVES (MAX_NUM_DRIVE + 1)
typedef struct tsrdata {
// TSR installation data
/** Previous int2f ISR, storing it for uninstall. */
void (__interrupt __far *prev_int2f_handler)();
/** Array of all possible DOS drives. */
struct {
/** VirtualBox "root" for this drive, or NIL if unmounted. */
uint32_t root;
} drives[NUM_DRIVES];
/** Stored pointer for the DOS SDA. */
DOSSDA __far *dossda;
/** Handle for the directory we are currently searching in. */
uint64_t search_dir_handle;
struct vboxcomm vb;
uint32_t hgcm_client_id;
} TSRDATA;
typedef TSRDATA * PTSRDATA;
typedef TSRDATA __far * LPTSRDATA;
extern void __declspec(naked) __far int2f_isr(void);
extern LPTSRDATA __far get_tsr_data(bool installed);
/** This symbol is always at the end of the TSR segment */
extern int resident_end;
/** This is not just data, but the entire segment. */
static inline unsigned get_resident_size(void)
{
return FP_OFF(&resident_end);
}
#endif // SFTSR_H
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