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krnl386: Get rid of DOS UMB support. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2020-03-25 19:23:00 +01:00
parent 7b68705d3c
commit 88cc1fb8b4
8 changed files with 85 additions and 277 deletions
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1
dlls/krnl386.exe16/Makefile.in
View File

@ -8,7 +8,6 @@ C_SRCS = \
atom.c \
dma.c \
dosmem.c \
dosvm.c \
error.c \
file.c \
fpu.c \

15
dlls/krnl386.exe16/dosexe.h
View File

@ -35,21 +35,14 @@
/* amount of space reserved for relay stack */
#define DOSVM_RELAY_DATA_SIZE 4096
/* various real-mode code stubs */
struct DPMI_segments
{
WORD int16_sel;
WORD relay_code_sel;
WORD relay_data_sel;
};
typedef void (*DOSRELAY)(CONTEXT*,void*);
typedef void (WINAPI *RMCBPROC)(CONTEXT*);
typedef void (WINAPI *INTPROC)(CONTEXT*);
extern WORD DOSVM_psp DECLSPEC_HIDDEN; /* psp of current DOS task */
extern WORD DOSVM_retval DECLSPEC_HIDDEN; /* return value of previous DOS task */
extern struct DPMI_segments *DOSVM_dpmi_segments DECLSPEC_HIDDEN;
extern WORD int16_sel DECLSPEC_HIDDEN;
extern WORD relay_code_sel DECLSPEC_HIDDEN;
extern WORD relay_data_sel DECLSPEC_HIDDEN;
/*
* Declare some CONTEXT.EFlags bits.
@ -218,8 +211,6 @@ typedef struct
/* dosvm.c */
extern void DOSVM_Exit( WORD retval ) DECLSPEC_HIDDEN;
extern LPVOID DOSVM_AllocDataUMB(DWORD, WORD *) DECLSPEC_HIDDEN;
extern void DOSVM_InitSegments(void) DECLSPEC_HIDDEN;
/* dma.c */
extern int DMA_Transfer(int channel,int reqlength,void* buffer) DECLSPEC_HIDDEN;

58
dlls/krnl386.exe16/dosmem.c
View File

@ -48,6 +48,11 @@ WORD DOSMEM_0000H; /* segment at 0:0 */
WORD DOSMEM_BiosDataSeg; /* BIOS data segment at 0x40:0 */
WORD DOSMEM_BiosSysSeg; /* BIOS ROM segment at 0xf000:0 */
WORD DOSVM_psp = 0;
WORD int16_sel = 0;
WORD relay_code_sel = 0;
WORD relay_data_sel = 0;
/* DOS memory highest address (including HMA) */
#define DOSMEM_SIZE 0x110000
#define DOSMEM_64KB 0x10000
@ -295,6 +300,57 @@ static void DOSMEM_Collapse( MCB* mcb )
}
}
/***********************************************************************
* DOSMEM_InitSegments
*/
static void DOSMEM_InitSegments(void)
{
LPSTR ptr;
int i;
static const char relay[]=
{
0xca, 0x04, 0x00, /* 16-bit far return and pop 4 bytes (relay void* arg) */
0xcd, 0x31, /* int 31 */
0xfb, 0x66, 0xcb /* sti and 32-bit far return */
};
/*
* PM / offset N*5: Interrupt N in 16-bit protected mode.
*/
int16_sel = GLOBAL_Alloc( GMEM_FIXED, 5 * 256, 0, WINE_LDT_FLAGS_CODE );
ptr = GlobalLock16( int16_sel );
for(i=0; i<256; i++) {
/*
* Each 16-bit interrupt handler is 5 bytes:
* 0xCD,<i> = int <i> (interrupt)
* 0xCA,0x02,0x00 = ret 2 (16-bit far return and pop 2 bytes / eflags)
*/
ptr[i * 5 + 0] = 0xCD;
ptr[i * 5 + 1] = i;
ptr[i * 5 + 2] = 0xCA;
ptr[i * 5 + 3] = 0x02;
ptr[i * 5 + 4] = 0x00;
}
GlobalUnlock16( int16_sel );
/*
* PM / offset 0: Stub where __wine_call_from_16_regs returns.
* PM / offset 3: Stub which swaps back to 32-bit application code/stack.
* PM / offset 5: Stub which enables interrupts
*/
relay_code_sel = GLOBAL_Alloc( GMEM_FIXED, sizeof(relay), 0, WINE_LDT_FLAGS_CODE );
ptr = GlobalLock16( relay_code_sel );
memcpy( ptr, relay, sizeof(relay) );
GlobalUnlock16( relay_code_sel );
/*
* Space for 16-bit stack used by relay code.
*/
relay_data_sel = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, DOSVM_RELAY_DATA_SIZE );
}
/******************************************************************
* DOSMEM_InitDosMemory
*/
@ -349,7 +405,7 @@ BOOL DOSMEM_InitDosMemory(void)
TRACE("DOS conventional memory initialized, %d bytes free.\n",
DOSMEM_Available());
DOSVM_InitSegments();
DOSMEM_InitSegments();
SetEvent( hRunOnce );
done = TRUE;

245
dlls/krnl386.exe16/dosvm.c
View File

@ -1,245 +0,0 @@
/*
* DOS Virtual Machine
*
* Copyright 1998 Ove Kåven
* Copyright 2002 Jukka Heinonen
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* Note: This code hasn't been completely cleaned up yet.
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include <sys/types.h>
#include "wine/winbase16.h"
#include "wine/exception.h"
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "wingdi.h"
#include "winuser.h"
#include "wownt32.h"
#include "winnt.h"
#include "wincon.h"
#include "dosexe.h"
#include "wine/debug.h"
#include "excpt.h"
WINE_DEFAULT_DEBUG_CHANNEL(int);
WORD DOSVM_psp = 0;
WORD DOSVM_retval = 0;
/*
* Wine DOS memory layout above 640k:
*
* a0000 - affff : VGA graphics (vga.c)
* b0000 - bffff : Monochrome text (unused)
* b8000 - bffff : VGA text (vga.c)
* c0000 - cffff : EMS frame (int67.c)
* d0000 - effff : Free memory for UMBs (himem.c)
* f0000 - fffff : BIOS stuff (msdos/dosmem.c)
* 100000 -10ffff : High memory area (unused)
*/
/*
* Table of real mode segments and protected mode selectors
* for code stubs and other miscellaneous storage.
*/
struct DPMI_segments *DOSVM_dpmi_segments = NULL;
/*
* First and last address available for upper memory blocks.
*/
#define DOSVM_UMB_BOTTOM 0xd0000
#define DOSVM_UMB_TOP 0xeffff
/*
* First free address for upper memory blocks.
*/
static DWORD DOSVM_umb_free = DOSVM_UMB_BOTTOM;
/**********************************************************************
* DOSVM_Exit
*/
void DOSVM_Exit( WORD retval )
{
DWORD count;
ReleaseThunkLock( &count );
ExitThread( retval );
}
/***********************************************************************
* DOSVM_AllocUMB
*
* Allocate upper memory block (UMB) from upper memory.
* Returned pointer is aligned to 16-byte (paragraph) boundary.
*
* This routine is only for allocating static storage for
* Wine internal uses. Allocated memory can be accessed from
* real mode, memory is taken from area already mapped and reserved
* by Wine and the allocation has very little memory and speed
* overhead. Use of this routine also preserves precious DOS
* conventional memory.
*/
static LPVOID DOSVM_AllocUMB( DWORD size )
{
LPVOID ptr = (LPVOID)DOSVM_umb_free;
size = ((size + 15) >> 4) << 4;
if(DOSVM_umb_free + size - 1 > DOSVM_UMB_TOP) {
ERR("Out of upper memory area.\n");
return 0;
}
DOSVM_umb_free += size;
return ptr;
}
/**********************************************************************
* alloc_selector
*
* Allocate a selector corresponding to a real mode address.
* size must be < 64k.
*/
static WORD alloc_selector( void *base, DWORD size, unsigned char flags )
{
WORD sel = wine_ldt_alloc_entries( 1 );
if (sel)
{
LDT_ENTRY entry;
wine_ldt_set_base( &entry, base );
wine_ldt_set_limit( &entry, size - 1 );
wine_ldt_set_flags( &entry, flags );
wine_ldt_set_entry( sel, &entry );
}
return sel;
}
/***********************************************************************
* DOSVM_AllocCodeUMB
*
* Allocate upper memory block for storing code stubs.
* Initializes real mode segment and 16-bit protected mode selector
* for the allocated code block.
*
* FIXME: should allocate a single PM selector for the whole UMB range.
*/
static LPVOID DOSVM_AllocCodeUMB( DWORD size, WORD *selector )
{
LPVOID ptr = DOSVM_AllocUMB( size );
*selector = alloc_selector( ptr, size, WINE_LDT_FLAGS_CODE );
return ptr;
}
/***********************************************************************
* DOSVM_AllocDataUMB
*
* Allocate upper memory block for storing data.
* Initializes real mode segment and 16-bit protected mode selector
* for the allocated data block.
*/
LPVOID DOSVM_AllocDataUMB( DWORD size, WORD *selector )
{
LPVOID ptr = DOSVM_AllocUMB( size );
*selector = alloc_selector( ptr, size, WINE_LDT_FLAGS_DATA );
return ptr;
}
/***********************************************************************
* DOSVM_InitSegments
*
* Initializes DOSVM_dpmi_segments. Allocates required memory and
* sets up segments and selectors for accessing the memory.
*/
void DOSVM_InitSegments(void)
{
DWORD old_prot;
LPSTR ptr;
int i;
static const char relay[]=
{
0xca, 0x04, 0x00, /* 16-bit far return and pop 4 bytes (relay void* arg) */
0xcd, 0x31, /* int 31 */
0xfb, 0x66, 0xcb /* sti and 32-bit far return */
};
/*
* Allocate pointer array.
*/
DOSVM_dpmi_segments = DOSVM_AllocUMB( sizeof(struct DPMI_segments) );
/*
* PM / offset N*5: Interrupt N in 16-bit protected mode.
*/
ptr = DOSVM_AllocCodeUMB( 5 * 256, &DOSVM_dpmi_segments->int16_sel );
for(i=0; i<256; i++) {
/*
* Each 16-bit interrupt handler is 5 bytes:
* 0xCD,<i> = int <i> (interrupt)
* 0xCA,0x02,0x00 = ret 2 (16-bit far return and pop 2 bytes / eflags)
*/
ptr[i * 5 + 0] = 0xCD;
ptr[i * 5 + 1] = i;
ptr[i * 5 + 2] = 0xCA;
ptr[i * 5 + 3] = 0x02;
ptr[i * 5 + 4] = 0x00;
}
/*
* PM / offset 0: Stub where __wine_call_from_16_regs returns.
* PM / offset 3: Stub which swaps back to 32-bit application code/stack.
* PM / offset 5: Stub which enables interrupts
*/
ptr = DOSVM_AllocCodeUMB( sizeof(relay), &DOSVM_dpmi_segments->relay_code_sel);
memcpy( ptr, relay, sizeof(relay) );
/*
* Space for 16-bit stack used by relay code.
*/
ptr = DOSVM_AllocDataUMB( DOSVM_RELAY_DATA_SIZE, &DOSVM_dpmi_segments->relay_data_sel);
memset( ptr, 0, DOSVM_RELAY_DATA_SIZE );
/*
* As we store code in UMB we should make sure it is executable
*/
VirtualProtect((void *)DOSVM_UMB_BOTTOM, DOSVM_UMB_TOP - DOSVM_UMB_BOTTOM, PAGE_EXECUTE_READWRITE, &old_prot);
}

8
dlls/krnl386.exe16/int21.c
View File

@ -520,9 +520,8 @@ static INT21_HEAP *INT21_GetHeapPointer( void )
if (!heap_pointer)
{
WORD heap_selector;
heap_pointer = DOSVM_AllocDataUMB( sizeof(INT21_HEAP), &heap_selector );
WORD heap_selector = GlobalAlloc16( GMEM_FIXED, sizeof(INT21_HEAP) );
heap_pointer = GlobalLock16( heap_selector );
heap_pointer->misc_selector = heap_selector;
INT21_FillHeap( heap_pointer );
}
@ -4782,8 +4781,7 @@ void WINAPI DOSVM_Int21Handler( CONTEXT *context )
case 0x4d: /* GET RETURN CODE */
TRACE("GET RETURN CODE (ERRORLEVEL)\n");
SET_AX( context, DOSVM_retval );
DOSVM_retval = 0;
SET_AX( context, 0 );
break;
case 0x4e: /* "FINDFIRST" - FIND FIRST MATCHING FILE */

6
dlls/krnl386.exe16/int2f.c
View File

@ -459,10 +459,8 @@ static CDROM_HEAP *CDROM_GetHeap( void )
if ( !heap_pointer )
{
WORD heap_selector;
/* allocate a new DOS data segment */
heap_pointer = DOSVM_AllocDataUMB( sizeof(CDROM_HEAP), &heap_selector );
WORD heap_selector = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, sizeof(CDROM_HEAP) );
heap_pointer = GlobalLock16( heap_selector );
heap_pointer->cdrom_selector = heap_selector;
CDROM_FillHeap( heap_pointer );
}

21
dlls/krnl386.exe16/interrupts.c
View File

@ -96,6 +96,18 @@ static void WINAPI DOSVM_DefaultHandler( CONTEXT *context )
}
/**********************************************************************
* DOSVM_Exit
*/
void DOSVM_Exit( WORD retval )
{
DWORD count;
ReleaseThunkLock( &count );
ExitThread( retval );
}
/**********************************************************************
* DOSVM_GetBuiltinHandler
*
@ -189,7 +201,7 @@ static void DOSVM_HardwareInterruptPM( CONTEXT *context, BYTE intnum )
{
FARPROC16 addr = DOSVM_GetPMHandler16( intnum );
if (SELECTOROF(addr) == DOSVM_dpmi_segments->int16_sel)
if (SELECTOROF(addr) == int16_sel)
{
TRACE( "builtin interrupt %02x has been invoked "
"(through vector %02x)\n",
@ -243,14 +255,14 @@ BOOL DOSVM_EmulateInterruptPM( CONTEXT *context, BYTE intnum )
DOSMEM_InitDosMemory();
if (context->SegCs == DOSVM_dpmi_segments->relay_code_sel)
if (context->SegCs == relay_code_sel)
{
/*
* This must not be called using DOSVM_BuildCallFrame.
*/
DOSVM_RelayHandler( context );
}
else if (context->SegCs == DOSVM_dpmi_segments->int16_sel)
else if (context->SegCs == int16_sel)
{
/* Restore original flags stored into the stack by the caller. */
WORD *stack = CTX_SEG_OFF_TO_LIN(context,
@ -328,8 +340,7 @@ FARPROC16 DOSVM_GetPMHandler16( BYTE intnum )
}
if (!DOSVM_Vectors16[intnum])
{
proc = (FARPROC16)MAKESEGPTR( DOSVM_dpmi_segments->int16_sel,
DOSVM_STUB_PM16 * intnum );
proc = (FARPROC16)MAKESEGPTR( int16_sel, DOSVM_STUB_PM16 * intnum );
DOSVM_Vectors16[intnum] = proc;
}
return DOSVM_Vectors16[intnum];

8
dlls/krnl386.exe16/relay.c
View File

@ -601,7 +601,7 @@ int relay_call_from_16( void *entry_point, unsigned char *args16, CONTEXT *conte
static RELAY_Stack16 *RELAY_GetPointer( DWORD offset )
{
offset = offset / sizeof(RELAY_Stack16) * sizeof(RELAY_Stack16);
return MapSL(MAKESEGPTR(DOSVM_dpmi_segments->relay_data_sel, offset));
return MapSL(MAKESEGPTR(relay_data_sel, offset));
}
@ -637,9 +637,9 @@ static void RELAY_MakeShortContext( CONTEXT *context )
stack->stack_bottom = RELAY_MAGIC;
stack->stack_top = RELAY_MAGIC;
context->SegSs = DOSVM_dpmi_segments->relay_data_sel;
context->SegSs = relay_data_sel;
context->Esp = offset;
context->SegCs = DOSVM_dpmi_segments->relay_code_sel;
context->SegCs = relay_code_sel;
context->Eip = 3;
}
@ -712,7 +712,7 @@ void DOSVM_RelayHandler( CONTEXT *context )
*/
void DOSVM_BuildCallFrame( CONTEXT *context, DOSRELAY relay, LPVOID data )
{
WORD code_sel = DOSVM_dpmi_segments->relay_code_sel;
WORD code_sel = relay_code_sel;
/*
* Allocate separate stack for relay call.