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winedos: Move all device driver initialization code to a newly written 

function DOSDEV_SetupDevice().
This commit is contained in:
Petr Tesarik 2006-04-11 10:36:08 +02:00 committed by Alexandre Julliard
parent 07d77c28fd
commit d72178a1be
2 changed files with 35 additions and 22 deletions
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55
dlls/winedos/devices.c
View File

@ -101,6 +101,7 @@ typedef struct
{
DOS_LISTOFLISTS lol;
DOS_DEVICE_HEADER dev[NR_DEVS-1];
DOS_DEVICE_HEADER *last_dev; /* ptr to last registered device driver */
WINEDEV_THUNK thunk[NR_DEVS];
REQ_IO req;
BYTE buffer[CON_BUFFER];
@ -415,6 +416,29 @@ Output of DOS 6.22:
DOS_LOL->size_extended_mem = 0xf000; /* very high value */
}
void DOSDEV_SetupDevice(const WINEDEV * devinfo,
WORD seg, WORD off_dev, WORD off_thunk)
{
DOS_DEVICE_HEADER *dev = PTR_REAL_TO_LIN(seg, off_dev);
WINEDEV_THUNK *thunk = PTR_REAL_TO_LIN(seg, off_thunk);
DOS_DATASEG *dataseg = (DOS_DATASEG*)DOSMEM_LOL();
dev->attr = devinfo->attr;
dev->strategy = off_thunk + FIELD_OFFSET(WINEDEV_THUNK, ljmp1);
dev->interrupt = off_thunk + FIELD_OFFSET(WINEDEV_THUNK, ljmp2);
memcpy(dev->name, devinfo->name, 8);
thunk->ljmp1 = LJMP;
thunk->strategy = DPMI_AllocInternalRMCB(devinfo->strategy);
thunk->ljmp2 = LJMP;
thunk->interrupt = DPMI_AllocInternalRMCB(devinfo->interrupt);
dev->next_dev = NONEXT;
if (dataseg->last_dev)
dataseg->last_dev->next_dev = MAKESEGPTR(seg, off_dev);
dataseg->last_dev = dev;
}
void DOSDEV_InstallDOSDevices(void)
{
DOS_DATASEG *dataseg;
@ -435,31 +459,18 @@ void DOSDEV_InstallDOSDevices(void)
InitListOfLists(&dataseg->lol);
/* Set up first device (NUL) */
dataseg->lol.NUL_dev.next_dev = MAKESEGPTR(seg, DOS_DATASEG_OFF(dev[0]));
dataseg->lol.NUL_dev.attr = devs[0].attr;
dataseg->lol.NUL_dev.strategy = DOS_DATASEG_OFF(thunk[0].ljmp1);
dataseg->lol.NUL_dev.interrupt = DOS_DATASEG_OFF(thunk[0].ljmp2);
memcpy(dataseg->lol.NUL_dev.name, devs[0].name, 8);
dataseg->last_dev = NULL;
DOSDEV_SetupDevice( &devs[0],
seg,
DOS_DATASEG_OFF(lol.NUL_dev),
DOS_DATASEG_OFF(thunk[0]) );
/* Set up the remaining devices */
for (n = 1; n < NR_DEVS; n++)
{
dataseg->dev[n-1].next_dev = (n+1) == NR_DEVS ? NONEXT :
MAKESEGPTR(seg, DOS_DATASEG_OFF(dev[n]));
dataseg->dev[n-1].attr = devs[n].attr;
dataseg->dev[n-1].strategy = DOS_DATASEG_OFF(thunk[n].ljmp1);
dataseg->dev[n-1].interrupt = DOS_DATASEG_OFF(thunk[n].ljmp2);
memcpy(dataseg->dev[n-1].name, devs[n].name, 8);
}
/* Set up thunks */
for (n = 0; n < NR_DEVS; n++)
{
dataseg->thunk[n].ljmp1 = LJMP;
dataseg->thunk[n].strategy = DPMI_AllocInternalRMCB(devs[n].strategy);
dataseg->thunk[n].ljmp2 = LJMP;
dataseg->thunk[n].interrupt = DPMI_AllocInternalRMCB(devs[n].interrupt);
}
DOSDEV_SetupDevice( &devs[n],
seg,
DOS_DATASEG_OFF(dev[n-1]),
DOS_DATASEG_OFF(thunk[n]) );
/* CON is device 1 */
dataseg->lol.ptr_CON_dev_hdr = MAKESEGPTR(seg, DOS_DATASEG_OFF(dev[0]));

2
dlls/winedos/dosexe.h
View File

@ -366,6 +366,8 @@ extern UINT WINAPI DOSVM_GetTimer( void );
/* devices.c */
extern void DOSDEV_InstallDOSDevices(void);
extern void DOSDEV_SetupDevice(const WINEDEV * devinfo,
WORD seg, WORD off_dev, WORD off_thunk);
extern DWORD DOSDEV_Console(void);
extern DWORD DOSDEV_FindCharDevice(char*name);
extern int DOSDEV_Peek(DWORD dev, BYTE*data);