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wine/msdos/dpmi.c
Alexandre Julliard 03468f7d4b Release 980215 
Sun Feb 15 12:02:59 1998  Alexandre Julliard  <julliard@lrc.epfl.ch>

	* [graphics/x11drv/*.c] [objects/*.c]
	A few X11 critical section optimizations, mostly with XGet/PutPixel.

	* [scheduler/sysdeps.c] [misc/main.c]
	Make sure X11 critical section is available before any Xlib call.

	* [if1632/relay.c] [tools/build.c]
	Yet another attempt at fixing Catch/Throw.

	* [loader/pe_image.c]
	Fixed broken PE DLL loading.

	* [include/winnt.h] [scheduler/handle.c] [scheduler/*.c]
	Implemented handle access rights.
	Added Get/SetHandleInformation.

Sun Feb 15 09:45:23 1997  Andreas Mohr <100.30936@germany.net>

	* [misc/winsock.c]
	Fixed bug in WSACleanup which lead to crashes in WINSOCK_HandleIO.

	* [graphics/fontengine.c] [include/font.h]
	Minor improvements.

	* [memory/global.c]
	Implemented GlobalEntryHandle.

	* [misc/toolhelp.c]
	Fixed a memory bug in Notify*register.

	* [misc/w32scomb.c]
	Improved Get16DLLAddress.

	* [objects/gdiobj.c]
	Implemented GdiSeeGdiDo.


Sat Feb 14 14:57:39 1998  John Richardson <jrichard@zko.dec.com>

	* [win32/console.c]
	Added the console implementation, AllocConsole, FreeConsole,
	CONSOLE_InheritConsole.

	* [documentation/console]
	Some documentation on the console.

	* [include/winerror.h]
	Added some error defines.

	* [scheduler/k32obj.c]
	Registered the scheduler ops.

Fri Feb 13 19:35:35 1998  James Moody  <013263m@dragon.acadiau.ca>

	* [ole/ole2nls.c]
	Some English language fixes for missing values.

	* [controls/listbox.c]
	Fix to allow an empty listbox to deselect all items.

	* [relay32/user32.spec] [windows/keyboard.c]
	CreateAcceleratorTableA stub method.

	* [windows/sysmetrics.c]
	Added missing SM_CXCURSOR & SM_CYCURSOR initializers.

	* [windows/message.c]
	PostThreadMessage32A stub method.

Fri Feb 13 17:12:24 1998  Jim Peterson <jspeter@roanoke.infi.net>

	* [libtest/hello3res.rc] [libtest/hello3.c] [libtest/Makefile.in]
	Updated the 'hello3' test so that it functions properly again.

Fri Feb 13 14:08:07 1998  Martin Boehme  <boehme@informatik.mu-luebeck.de>
	
	* [graphics/mapping.c]
	Fixed the embarrassing bugs I introduced into DPtoLP and
	LPtoDP.

	* [windows/scroll.c]
	Prevent ScrollWindow32 from sending WM_ERASEBKGND.

Thu Feb 12 22:46:53 1998  Huw D M Davies <h.davies1@physics.oxford.ac.uk>

	* [objects/metafile] [include/ldt.h]
	Fix to cope with records longer than 64K.

	* [windows/clipboard.c]
	Clean up bitmaps and metapicts properly.

Mon Feb  3 21:52:18 1998  Karl Backström <karl_b@geocities.com>

	* [programs/winhelp/Sw.rc] [resources/sysres_Sw.rc]
	Minor update of Swedish language support.
1998-02-15 19:40:49 +00:00

542 lines
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/*
* DPMI 0.9 emulation
*
* Copyright 1995 Alexandre Julliard
*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include "windows.h"
#include "heap.h"
#include "ldt.h"
#include "module.h"
#include "miscemu.h"
#include "drive.h"
#include "msdos.h"
#include "toolhelp.h"
#include "stddebug.h"
#include "debug.h"
#define DOS_GET_DRIVE(reg) ((reg) ? (reg) - 1 : DRIVE_GetCurrentDrive())
void CreateBPB(int drive, BYTE *data); /* defined in int21.c */
/* Structure for real-mode callbacks */
typedef struct
{
DWORD edi;
DWORD esi;
DWORD ebp;
DWORD reserved;
DWORD ebx;
DWORD edx;
DWORD ecx;
DWORD eax;
WORD fl;
WORD es;
WORD ds;
WORD fs;
WORD gs;
WORD ip;
WORD cs;
WORD sp;
WORD ss;
} REALMODECALL;
/**********************************************************************
* INT_GetRealModeContext
*/
static void INT_GetRealModeContext( REALMODECALL *call, CONTEXT *context )
{
EAX_reg(context) = call->eax;
EBX_reg(context) = call->ebx;
ECX_reg(context) = call->ecx;
EDX_reg(context) = call->edx;
ESI_reg(context) = call->esi;
EDI_reg(context) = call->edi;
EBP_reg(context) = call->ebp;
EFL_reg(context) = call->fl;
EIP_reg(context) = call->ip;
ESP_reg(context) = call->sp;
CS_reg(context) = call->cs;
DS_reg(context) = call->ds;
ES_reg(context) = call->es;
FS_reg(context) = call->fs;
GS_reg(context) = call->gs;
}
/**********************************************************************
* INT_SetRealModeContext
*/
static void INT_SetRealModeContext( REALMODECALL *call, CONTEXT *context )
{
call->eax = EAX_reg(context);
call->ebx = EBX_reg(context);
call->ecx = ECX_reg(context);
call->edx = EDX_reg(context);
call->esi = ESI_reg(context);
call->edi = EDI_reg(context);
call->ebp = EBP_reg(context);
call->fl = FL_reg(context);
call->ip = IP_reg(context);
call->sp = SP_reg(context);
call->cs = CS_reg(context);
call->ds = DS_reg(context);
call->es = ES_reg(context);
call->fs = FS_reg(context);
call->gs = GS_reg(context);
}
/**********************************************************************
* INT_DoRealModeInt
*/
static void INT_DoRealModeInt( CONTEXT *context )
{
CONTEXT realmode_ctx;
REALMODECALL *call = (REALMODECALL *)PTR_SEG_OFF_TO_LIN( ES_reg(context),
DI_reg(context) );
INT_GetRealModeContext( call, &realmode_ctx );
RESET_CFLAG(context);
switch (BL_reg(context))
{
case 0x2f: /* int2f */
switch (AH_reg(&realmode_ctx))
{
case 0x15:
/* MSCDEX hook */
do_mscdex( &realmode_ctx );
break;
default:
SET_CFLAG(context);
break;
}
break;
case 0x21: /* int21 */
switch (AH_reg(&realmode_ctx))
{
case 0x52:
ES_reg(&realmode_ctx) = 0;
EBX_reg(&realmode_ctx) = 0;
break;
case 0x65:
switch (AL_reg(&realmode_ctx))
{
case 0x06:
{/* get collate table */
/* ES:DI is a REALMODE pointer to 5 byte dosmem
* we fill that with 0x6, realmode pointer to collateTB
*/
char *table = DOSMEM_MapRealToLinear(
MAKELONG(EDI_reg(&realmode_ctx),ES_reg(&realmode_ctx)));
*(BYTE*)table = 0x06;
*(DWORD*)(table+1) = DOSMEM_CollateTable;
CX_reg(&realmode_ctx) = 258;/*FIXME: size of table?*/
break;
}
default:
SET_CFLAG(context);
break;
}
break;
case 0x44:
switch (AL_reg(&realmode_ctx))
{
case 0x0D:
{/* generic block device request */
BYTE *dataptr = DOSMEM_MapRealToLinear(
MAKELONG(EDX_reg(&realmode_ctx),DS_reg(&realmode_ctx)));
int drive = DOS_GET_DRIVE(BL_reg(&realmode_ctx));
if (CH_reg(&realmode_ctx) != 0x08)
{
SET_CFLAG(context);
break;
}
switch (CL_reg(&realmode_ctx))
{
case 0x66:
{
char label[12],fsname[9],path[4];
DWORD serial;
strcpy(path,"x:\\");path[0]=drive+'A';
GetVolumeInformation32A(path,label,12,&serial,NULL,NULL,fsname,9);
*(WORD*)dataptr = 0;
memcpy(dataptr+2,&serial,4);
memcpy(dataptr+6,label ,11);
memcpy(dataptr+17,fsname,8);
break;
}
case 0x60: /* get device parameters */
/* used by defrag.exe of win95 */
memset(dataptr, 0, 0x26);
dataptr[0] = 0x04;
dataptr[6] = 0; /* media type */
if (drive > 1)
{
dataptr[1] = 0x05; /* fixed disk */
setword(&dataptr[2], 0x01); /* non removable */
setword(&dataptr[4], 0x300); /* # of cylinders */
}
else
{
dataptr[1] = 0x07; /* block dev, floppy */
setword(&dataptr[2], 0x02); /* removable */
setword(&dataptr[4], 80); /* # of cylinders */
}
CreateBPB(drive, &dataptr[7]);
break;
default:
SET_CFLAG(context);
break;
}
}
break;
default:
SET_CFLAG(context);
break;
}
break;
default:
SET_CFLAG(context);
break;
}
break;
default:
SET_CFLAG(context);
break;
}
if (EFL_reg(context)&1)
fprintf(stdnimp,
"RealModeInt %02x: EAX=%08lx EBX=%08lx ECX=%08lx EDX=%08lx\n"
" ESI=%08lx EDI=%08lx DS=%04lx ES=%04lx\n",
BL_reg(context), EAX_reg(&realmode_ctx),
EBX_reg(&realmode_ctx), ECX_reg(&realmode_ctx),
EDX_reg(&realmode_ctx), ESI_reg(&realmode_ctx),
EDI_reg(&realmode_ctx), DS_reg(&realmode_ctx),
ES_reg(&realmode_ctx) );
INT_SetRealModeContext( call, &realmode_ctx );
}
/**********************************************************************
* INT_Int31Handler
*
* Handler for int 31h (DPMI).
*/
void WINAPI INT_Int31Handler( CONTEXT *context )
{
DWORD dw;
BYTE *ptr;
RESET_CFLAG(context);
switch(AX_reg(context))
{
case 0x0000: /* Allocate LDT descriptors */
if (!(AX_reg(context) = AllocSelectorArray( CX_reg(context) )))
{
AX_reg(context) = 0x8011; /* descriptor unavailable */
SET_CFLAG(context);
}
break;
case 0x0001: /* Free LDT descriptor */
if (FreeSelector( BX_reg(context) ))
{
AX_reg(context) = 0x8022; /* invalid selector */
SET_CFLAG(context);
}
else
{
/* If a segment register contains the selector being freed, */
/* set it to zero. */
if (!((DS_reg(context)^BX_reg(context)) & ~3)) DS_reg(context) = 0;
if (!((ES_reg(context)^BX_reg(context)) & ~3)) ES_reg(context) = 0;
if (!((FS_reg(context)^BX_reg(context)) & ~3)) FS_reg(context) = 0;
if (!((GS_reg(context)^BX_reg(context)) & ~3)) GS_reg(context) = 0;
}
break;
case 0x0002: /* Real mode segment to descriptor */
{
WORD entryPoint = 0; /* KERNEL entry point for descriptor */
switch(BX_reg(context))
{
case 0x0000: entryPoint = 183; break; /* __0000H */
case 0x0040: entryPoint = 193; break; /* __0040H */
case 0xa000: entryPoint = 174; break; /* __A000H */
case 0xb000: entryPoint = 181; break; /* __B000H */
case 0xb800: entryPoint = 182; break; /* __B800H */
case 0xc000: entryPoint = 195; break; /* __C000H */
case 0xd000: entryPoint = 179; break; /* __D000H */
case 0xe000: entryPoint = 190; break; /* __E000H */
case 0xf000: entryPoint = 194; break; /* __F000H */
default:
AX_reg(context) = DOSMEM_AllocSelector(BX_reg(context));
break;
}
if (entryPoint)
AX_reg(context) = LOWORD(MODULE_GetEntryPoint(
GetModuleHandle16( "KERNEL" ),
entryPoint ));
}
break;
case 0x0003: /* Get next selector increment */
AX_reg(context) = __AHINCR;
break;
case 0x0004: /* Lock selector (not supported) */
AX_reg(context) = 0; /* FIXME: is this a correct return value? */
break;
case 0x0005: /* Unlock selector (not supported) */
AX_reg(context) = 0; /* FIXME: is this a correct return value? */
break;
case 0x0006: /* Get selector base address */
if (!(dw = GetSelectorBase( BX_reg(context) )))
{
AX_reg(context) = 0x8022; /* invalid selector */
SET_CFLAG(context);
}
else
{
CX_reg(context) = HIWORD(dw);
DX_reg(context) = LOWORD(dw);
}
break;
case 0x0007: /* Set selector base address */
SetSelectorBase( BX_reg(context),
MAKELONG( DX_reg(context), CX_reg(context) ) );
break;
case 0x0008: /* Set selector limit */
SetSelectorLimit( BX_reg(context),
MAKELONG( DX_reg(context), CX_reg(context) ) );
break;
case 0x0009: /* Set selector access rights */
SelectorAccessRights( BX_reg(context), 1, CX_reg(context) );
break;
case 0x000a: /* Allocate selector alias */
if (!(AX_reg(context) = AllocCStoDSAlias( BX_reg(context) )))
{
AX_reg(context) = 0x8011; /* descriptor unavailable */
SET_CFLAG(context);
}
break;
case 0x000b: /* Get descriptor */
{
ldt_entry entry;
LDT_GetEntry( SELECTOR_TO_ENTRY( BX_reg(context) ), &entry );
/* FIXME: should use ES:EDI for 32-bit clients */
LDT_EntryToBytes( PTR_SEG_OFF_TO_LIN( ES_reg(context),
DI_reg(context) ), &entry );
}
break;
case 0x000c: /* Set descriptor */
{
ldt_entry entry;
LDT_BytesToEntry( PTR_SEG_OFF_TO_LIN( ES_reg(context),
DI_reg(context) ), &entry );
LDT_GetEntry( SELECTOR_TO_ENTRY( BX_reg(context) ), &entry );
}
break;
case 0x000d: /* Allocate specific LDT descriptor */
AX_reg(context) = 0x8011; /* descriptor unavailable */
SET_CFLAG(context);
break;
case 0x0200: /* get real mode interrupt vector */
fprintf(stdnimp,
"int31: get realmode interupt vector(0x%02x) unimplemented.\n",
BL_reg(context)
);
SET_CFLAG(context);
break;
case 0x0201: /* set real mode interrupt vector */
fprintf(stdnimp,
"int31: set realmode interupt vector(0x%02x,0x%04x:0x%04x) unimplemented\n",
BL_reg(context),CX_reg(context),DX_reg(context)
);
SET_CFLAG(context);
break;
case 0x0204: /* Get protected mode interrupt vector */
dw = (DWORD)INT_GetHandler( BL_reg(context) );
CX_reg(context) = HIWORD(dw);
DX_reg(context) = LOWORD(dw);
break;
case 0x0205: /* Set protected mode interrupt vector */
INT_SetHandler( BL_reg(context),
(FARPROC16)PTR_SEG_OFF_TO_SEGPTR( CX_reg(context),
DX_reg(context) ));
break;
case 0x0300: /* Simulate real mode interrupt */
INT_DoRealModeInt( context );
break;
case 0x0301: /* Call real mode procedure with far return */
{
REALMODECALL *p = (REALMODECALL *)PTR_SEG_OFF_TO_LIN( ES_reg(context), DI_reg(context) );
fprintf(stdnimp,
"RealModeCall: EAX=%08lx EBX=%08lx ECX=%08lx EDX=%08lx\n"
" ESI=%08lx EDI=%08lx ES=%04x DS=%04x CS:IP=%04x:%04x\n",
p->eax, p->ebx, p->ecx, p->edx,
p->esi, p->edi, p->es, p->ds, p->cs, p->ip );
SET_CFLAG(context);
}
break;
case 0x0302: /* Call real mode procedure with interrupt return */
{
REALMODECALL *p = (REALMODECALL *)PTR_SEG_OFF_TO_LIN( ES_reg(context), DI_reg(context) );
fprintf(stdnimp,
"RealModeCallIret: EAX=%08lx EBX=%08lx ECX=%08lx EDX=%08lx\n"
" ESI=%08lx EDI=%08lx ES=%04x DS=%04x CS:IP=%04x:%04x\n",
p->eax, p->ebx, p->ecx, p->edx,
p->esi, p->edi, p->es, p->ds, p->cs, p->ip );
SET_CFLAG(context);
}
break;
case 0x0303: /* Allocate Real Mode Callback Address */
{
REALMODECALL *p = (REALMODECALL *)PTR_SEG_OFF_TO_LIN( ES_reg(context), DI_reg(context) );
fprintf(stdnimp,
"AllocRMCB: EAX=%08lx EBX=%08lx ECX=%08lx EDX=%08lx\n"
" ESI=%08lx EDI=%08lx ES=%04x DS=%04x CS:IP=%04x:%04x\n"
" Function to call: %04x:%04x\n",
p->eax, p->ebx, p->ecx, p->edx,
p->esi, p->edi, p->es, p->ds, p->cs, p->ip,
(WORD)DS_reg(context), SI_reg(context) );
SET_CFLAG(context);
}
break;
case 0x0304: /* Free Real Mode Callback Address */
{
fprintf(stdnimp,
"FreeRMCB: callback address: %04x:%04x\n",
CX_reg(context), DX_reg(context));
SET_CFLAG(context);
}
break;
case 0x0400: /* Get DPMI version */
{
SYSTEM_INFO si;
GetSystemInfo(&si);
AX_reg(context) = 0x005a; /* DPMI version 0.90 */
BX_reg(context) = 0x0005; /* Flags: 32-bit, virtual memory */
CL_reg(context) = si.wProcessorLevel;
DX_reg(context) = 0x0102; /* Master/slave interrupt controller base*/
break;
}
case 0x0500: /* Get free memory information */
{
MEMMANINFO mmi;
mmi.dwSize = sizeof(mmi);
MemManInfo(&mmi);
ptr = (BYTE *)PTR_SEG_OFF_TO_LIN(ES_reg(context),DI_reg(context));
/* the layout is just the same as MEMMANINFO, but without
* the dwSize entry.
*/
memcpy(ptr,((char*)&mmi)+4,sizeof(mmi)-4);
break;
}
case 0x0501: /* Allocate memory block */
if (!(ptr = (BYTE *)HeapAlloc( GetProcessHeap(), 0,
MAKELONG( CX_reg(context),
BX_reg(context) ))))
{
AX_reg(context) = 0x8012; /* linear memory not available */
SET_CFLAG(context);
}
else
{
BX_reg(context) = SI_reg(context) = HIWORD(ptr);
CX_reg(context) = DI_reg(context) = LOWORD(ptr);
}
break;
case 0x0502: /* Free memory block */
HeapFree( GetProcessHeap(), 0,
(void *)MAKELONG( DI_reg(context), SI_reg(context) ) );
break;
case 0x0503: /* Resize memory block */
if (!(ptr = (BYTE *)HeapReAlloc( GetProcessHeap(), 0,
(void *)MAKELONG(DI_reg(context),SI_reg(context)),
MAKELONG(CX_reg(context),BX_reg(context)))))
{
AX_reg(context) = 0x8012; /* linear memory not available */
SET_CFLAG(context);
}
else
{
BX_reg(context) = SI_reg(context) = HIWORD(ptr);
CX_reg(context) = DI_reg(context) = LOWORD(ptr);
}
break;
case 0x0600: /* Lock linear region */
break; /* Just ignore it */
case 0x0601: /* Unlock linear region */
break; /* Just ignore it */
case 0x0602: /* Unlock real-mode region */
break; /* Just ignore it */
case 0x0603: /* Lock real-mode region */
break; /* Just ignore it */
case 0x0604: /* Get page size */
BX_reg(context) = 0;
CX_reg(context) = 4096;
break;
case 0x0702: /* Mark page as demand-paging candidate */
break; /* Just ignore it */
case 0x0703: /* Discard page contents */
break; /* Just ignore it */
case 0x0800: /* Physical address mapping */
if(!(ptr=DOSMEM_MapRealToLinear(MAKELONG(CX_reg(context),BX_reg(context)))))
{
AX_reg(context) = 0x8021;
SET_CFLAG(context);
}
else
{
BX_reg(context) = HIWORD(ptr);
CX_reg(context) = LOWORD(ptr);
RESET_CFLAG(context);
}
break;
default:
INT_BARF( context, 0x31 );
AX_reg(context) = 0x8001; /* unsupported function */
SET_CFLAG(context);
break;
}
}
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