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Sweden-Number/dlls/winedos/module.c

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/*
* DOS (MZ) loader
*
* Copyright 1998 Ove Kåven
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <fcntl.h>
#include <signal.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#include "windef.h"
#include "winbase.h"
#include "wine/winbase16.h"
#include "wingdi.h"
#include "winuser.h"
#include "winerror.h"
#include "wine/debug.h"
#include "dosexe.h"
#include "dosvm.h"
#include "vga.h"
WINE_DEFAULT_DEBUG_CHANNEL(module);
static BOOL DOSVM_isdosexe;
/**********************************************************************
* DOSVM_IsWin16
*
* Return TRUE if we are in Windows process.
*/
BOOL DOSVM_IsWin16(void)
{
return DOSVM_isdosexe ? FALSE : TRUE;
}
#ifdef MZ_SUPPORTED
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
/* define this to try mapping through /proc/pid/mem instead of a temp file,
but Linus doesn't like mmapping /proc/pid/mem, so it doesn't work for me */
#undef MZ_MAPSELF
#define BIOS_DATA_SEGMENT 0x40
#define PSP_SIZE 0x10
#define SEG16(ptr,seg) ((LPVOID)((BYTE*)ptr+((DWORD)(seg)<<4)))
#define SEGPTR16(ptr,segptr) ((LPVOID)((BYTE*)ptr+((DWORD)SELECTOROF(segptr)<<4)+OFFSETOF(segptr)))
/* structures for EXEC */
#include "pshpack1.h"
typedef struct {
WORD env_seg;
DWORD cmdline;
DWORD fcb1;
DWORD fcb2;
WORD init_sp;
WORD init_ss;
WORD init_ip;
WORD init_cs;
} ExecBlock;
typedef struct {
WORD load_seg;
WORD rel_seg;
} OverlayBlock;
#include "poppack.h"
/* global variables */
pid_t dosvm_pid;
static WORD init_cs,init_ip,init_ss,init_sp;
static HANDLE dosvm_thread, loop_thread;
static DWORD dosvm_tid, loop_tid;
static void MZ_Launch( LPCSTR cmdtail, int length );
static BOOL MZ_InitTask(void);
static void MZ_CreatePSP( LPVOID lpPSP, WORD env, WORD par )
{
PDB16*psp=lpPSP;
psp->int20=0x20CD; /* int 20 */
/* some programs use this to calculate how much memory they need */
psp->nextParagraph=0x9FFF; /* FIXME: use a real value */
/* FIXME: dispatcher */
psp->savedint22 = DOSVM_GetRMHandler(0x22);
psp->savedint23 = DOSVM_GetRMHandler(0x23);
psp->savedint24 = DOSVM_GetRMHandler(0x24);
psp->parentPSP=par;
psp->environment=env;
/* FIXME: more PSP stuff */
}
static void MZ_FillPSP( LPVOID lpPSP, LPCSTR cmdtail, int length )
{
PDB16 *psp = lpPSP;
if(length > 127)
{
WARN( "Command tail truncated! (length %d)\n", length );
length = 126;
}
psp->cmdLine[0] = length;
/*
* Length of exactly 127 bytes means that full command line is
* stored in environment variable CMDLINE and PSP contains
* command tail truncated to 126 bytes.
*/
if(length == 127)
length = 126;
if(length > 0)
memmove(psp->cmdLine+1, cmdtail, length);
psp->cmdLine[length+1] = '\r';
/* FIXME: more PSP stuff */
}
static WORD MZ_InitEnvironment( LPCSTR env, LPCSTR name )
{
unsigned sz=0;
unsigned i=0;
WORD seg;
LPSTR envblk;
if (env) {
/* get size of environment block */
while (env[sz++]) sz+=strlen(env+sz)+1;
} else sz++;
/* allocate it */
envblk=DOSMEM_GetBlock(sz+sizeof(WORD)+strlen(name)+1,&seg);
/* fill it */
if (env) {
memcpy(envblk,env,sz);
} else envblk[0]=0;
/* DOS environment variables are uppercase */
while (envblk[i]){
while (envblk[i] != '='){
if (envblk[i]>='a' && envblk[i] <= 'z'){
envblk[i] -= 32;
}
i++;
}
i += strlen(envblk+i) + 1;
}
/* DOS 3.x: the block contains 1 additional string */
*(WORD*)(envblk+sz)=1;
/* being the program name itself */
strcpy(envblk+sz+sizeof(WORD),name);
return seg;
}
static BOOL MZ_InitMemory(void)
{
/* initialize the memory */
TRACE("Initializing DOS memory structures\n");
DOSMEM_InitDosMem();
DOSDEV_InstallDOSDevices();
return TRUE;
}
static BOOL MZ_DoLoadImage( HANDLE hFile, LPCSTR filename, OverlayBlock *oblk, WORD par_env_seg )
{
IMAGE_DOS_HEADER mz_header;
DWORD image_start,image_size,min_size,max_size,avail;
BYTE*psp_start,*load_start,*oldenv = 0;
int x, old_com=0, alloc;
SEGPTR reloc;
WORD env_seg, load_seg, rel_seg, oldpsp_seg;
DWORD len;
if (DOSVM_psp) {
/* DOS process already running, inherit from it */
PDB16* par_psp;
alloc=0;
oldpsp_seg = DOSVM_psp;
if( !par_env_seg) {
par_psp = (PDB16*)((DWORD)DOSVM_psp << 4);
oldenv = (LPBYTE)((DWORD)par_psp->environment << 4);
}
} else {
/* allocate new DOS process, inheriting from Wine environment */
alloc=1;
oldpsp_seg = 0;
if( !par_env_seg)
oldenv = GetEnvironmentStringsA();
}
SetFilePointer(hFile,0,NULL,FILE_BEGIN);
if ( !ReadFile(hFile,&mz_header,sizeof(mz_header),&len,NULL)
|| len != sizeof(mz_header)
|| mz_header.e_magic != IMAGE_DOS_SIGNATURE) {
char *p = strrchr( filename, '.' );
if (!p || strcasecmp( p, ".com" )) /* check for .COM extension */
{
SetLastError(ERROR_BAD_FORMAT);
goto load_error;
}
old_com=1; /* assume .COM file */
image_start=0;
image_size=GetFileSize(hFile,NULL);
min_size=0x10000; max_size=0x100000;
mz_header.e_crlc=0;
mz_header.e_ss=0; mz_header.e_sp=0xFFFE;
mz_header.e_cs=0; mz_header.e_ip=0x100;
} else {
/* calculate load size */
image_start=mz_header.e_cparhdr<<4;
image_size=mz_header.e_cp<<9; /* pages are 512 bytes */
/* From Ralf Brown Interrupt List: If the word at offset 02h is 4, it should
* be treated as 00h, since pre-1.10 versions of the MS linker set it that
* way. */
if ((mz_header.e_cblp!=0)&&(mz_header.e_cblp!=4)) image_size-=512-mz_header.e_cblp;
image_size-=image_start;
min_size=image_size+((DWORD)mz_header.e_minalloc<<4)+(PSP_SIZE<<4);
max_size=image_size+((DWORD)mz_header.e_maxalloc<<4)+(PSP_SIZE<<4);
}
if (alloc) MZ_InitMemory();
if (oblk) {
/* load overlay into preallocated memory */
load_seg=oblk->load_seg;
rel_seg=oblk->rel_seg;
load_start=(LPBYTE)((DWORD)load_seg<<4);
} else {
/* allocate environment block */
if( par_env_seg)
env_seg = par_env_seg;
else
env_seg=MZ_InitEnvironment(oldenv, filename);
if( alloc && oldenv)
FreeEnvironmentStringsA( oldenv);
/* allocate memory for the executable */
TRACE("Allocating DOS memory (min=%ld, max=%ld)\n",min_size,max_size);
avail=DOSMEM_Available();
if (avail<min_size) {
ERR("insufficient DOS memory\n");
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
goto load_error;
}
if (avail>max_size) avail=max_size;
psp_start=DOSMEM_GetBlock(avail,&DOSVM_psp);
if (!psp_start) {
ERR("error allocating DOS memory\n");
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
goto load_error;
}
load_seg=DOSVM_psp+(old_com?0:PSP_SIZE);
rel_seg=load_seg;
load_start=psp_start+(PSP_SIZE<<4);
MZ_CreatePSP(psp_start, env_seg, oldpsp_seg);
}
/* load executable image */
TRACE("loading DOS %s image, %08lx bytes\n",old_com?"COM":"EXE",image_size);
SetFilePointer(hFile,image_start,NULL,FILE_BEGIN);
if (!ReadFile(hFile,load_start,image_size,&len,NULL) || len != image_size) {
/* check if this is due to the workaround for the pre-1.10 MS linker and we
realy had only 4 bytes on the last page */
if (mz_header.e_cblp != 4 || image_size - len != 512 - 4) {
SetLastError(ERROR_BAD_FORMAT);
goto load_error;
}
}
if (mz_header.e_crlc) {
/* load relocation table */
TRACE("loading DOS EXE relocation table, %d entries\n",mz_header.e_crlc);
/* FIXME: is this too slow without read buffering? */
SetFilePointer(hFile,mz_header.e_lfarlc,NULL,FILE_BEGIN);
for (x=0; x<mz_header.e_crlc; x++) {
if (!ReadFile(hFile,&reloc,sizeof(reloc),&len,NULL) || len != sizeof(reloc)) {
SetLastError(ERROR_BAD_FORMAT);
goto load_error;
}
*(WORD*)SEGPTR16(load_start,reloc)+=rel_seg;
}
}
if (!oblk) {
init_cs = load_seg+mz_header.e_cs;
init_ip = mz_header.e_ip;
init_ss = load_seg+mz_header.e_ss;
init_sp = mz_header.e_sp;
if (old_com){
/* .COM files exit with ret. Make sure they jump to psp start (=int 20) */
WORD* stack = PTR_REAL_TO_LIN(init_ss, init_sp);
*stack = 0;
}
TRACE("entry point: %04x:%04x\n",init_cs,init_ip);
}
if (alloc && !MZ_InitTask()) {
SetLastError(ERROR_GEN_FAILURE);
return FALSE;
}
return TRUE;
load_error:
DOSVM_psp = oldpsp_seg;
return FALSE;
}
/***********************************************************************
* wine_load_dos_exe (WINEDOS.@)
*
* Called from WineVDM when a new real-mode DOS process is started.
* Loads DOS program into memory and executes the program.
*/
void WINAPI wine_load_dos_exe( LPCSTR filename, LPCSTR cmdline )
{
char dos_cmdtail[126];
int dos_length = 0;
HANDLE hFile = CreateFileA( filename, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, 0 );
if (hFile == INVALID_HANDLE_VALUE) return;
DOSVM_isdosexe = TRUE;
if(cmdline && *cmdline)
{
dos_length = strlen(cmdline);
memmove( dos_cmdtail + 1, cmdline,
(dos_length < 125) ? dos_length : 125 );
/* Non-empty command tail always starts with at least one space. */
dos_cmdtail[0] = ' ';
dos_length++;
/*
* If command tail is longer than 126 characters,
* set tail length to 127 and fill CMDLINE environment variable
* with full command line (this includes filename).
*/
if (dos_length > 126)
{
char *cmd = HeapAlloc( GetProcessHeap(), 0,
dos_length + strlen(filename) + 4 );
char *ptr = cmd;
if (!cmd)
return;
/*
* Append filename. If path includes spaces, quote the path.
*/
if (strchr(filename, ' '))
{
*ptr++ = '\"';
strcpy( ptr, filename );
ptr += strlen(filename);
*ptr++ = '\"';
}
else
{
strcpy( ptr, filename );
ptr += strlen(filename);
}
/*
* Append command tail.
*/
if (cmdline[0] != ' ')
*ptr++ = ' ';
strcpy( ptr, cmdline );
/*
* Set environment variable. This will be passed to
* new DOS process.
*/
if (!SetEnvironmentVariableA( "CMDLINE", cmd ))
{
HeapFree(GetProcessHeap(), 0, cmd );
return;
}
HeapFree(GetProcessHeap(), 0, cmd );
dos_length = 127;
}
}
if (MZ_DoLoadImage( hFile, filename, NULL, 0 ))
MZ_Launch( dos_cmdtail, dos_length );
}
/***********************************************************************
* MZ_Exec
*
* this may only be called from existing DOS processes
*/
BOOL WINAPI MZ_Exec( CONTEXT86 *context, LPCSTR filename, BYTE func, LPVOID paramblk )
{
DWORD binType;
STARTUPINFOA st;
PROCESS_INFORMATION pe;
HANDLE hFile;
BOOL ret = FALSE;
if(!GetBinaryTypeA(filename, &binType)) /* determine what kind of binary this is */
{
return FALSE; /* binary is not an executable */
}
/* handle non-dos executables */
if(binType != SCS_DOS_BINARY)
{
if(func == 0) /* load and execute */
{
LPBYTE fullCmdLine;
WORD fullCmdLength;
LPBYTE psp_start = (LPBYTE)((DWORD)DOSVM_psp << 4);
PDB16 *psp = (PDB16 *)psp_start;
ExecBlock *blk = (ExecBlock *)paramblk;
LPBYTE cmdline = PTR_REAL_TO_LIN(SELECTOROF(blk->cmdline),OFFSETOF(blk->cmdline));
LPBYTE envblock = PTR_REAL_TO_LIN(psp->environment, 0);
int cmdLength = cmdline[0];
/*
* If cmdLength is 127, command tail is truncated and environment
* variable CMDLINE should contain full command line
* (this includes filename).
*/
if (cmdLength == 127)
{
FIXME( "CMDLINE argument passing is unimplemented.\n" );
cmdLength = 126; /* FIXME */
}
fullCmdLength = (strlen(filename) + 1) + cmdLength + 1; /* filename + space + cmdline + terminating null character */
fullCmdLine = HeapAlloc(GetProcessHeap(), 0, fullCmdLength);
if(!fullCmdLine) return FALSE; /* return false on memory alloc failure */
/* build the full command line from the executable file and the command line being passed in */
snprintf(fullCmdLine, fullCmdLength, "%s ", filename); /* start off with the executable filename and a space */
memcpy(fullCmdLine + strlen(fullCmdLine), cmdline + 1, cmdLength); /* append cmdline onto the end */
fullCmdLine[fullCmdLength - 1] = 0; /* null terminate string */
ZeroMemory (&st, sizeof(STARTUPINFOA));
st.cb = sizeof(STARTUPINFOA);
ret = CreateProcessA (NULL, fullCmdLine, NULL, NULL, TRUE, 0, envblock, NULL, &st, &pe);
/* wait for the app to finish and clean up PROCESS_INFORMATION handles */
if(ret)
{
WaitForSingleObject(pe.hProcess, INFINITE); /* wait here until the child process is complete */
CloseHandle(pe.hProcess);
CloseHandle(pe.hThread);
}
HeapFree(GetProcessHeap(), 0, fullCmdLine); /* free the memory we allocated */
}
else
{
FIXME("EXEC type of %d not implemented for non-dos executables\n", func);
ret = FALSE;
}
return ret;
} /* if(binType != SCS_DOS_BINARY) */
/* handle dos executables */
hFile = CreateFileA( filename, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, 0);
if (hFile == INVALID_HANDLE_VALUE) return FALSE;
switch (func) {
case 0: /* load and execute */
case 1: /* load but don't execute */
{
/* save current process's return SS:SP now */
LPBYTE psp_start = (LPBYTE)((DWORD)DOSVM_psp << 4);
PDB16 *psp = (PDB16 *)psp_start;
psp->saveStack = (DWORD)MAKESEGPTR(context->SegSs, LOWORD(context->Esp));
}
ret = MZ_DoLoadImage( hFile, filename, NULL, ((ExecBlock *)paramblk)->env_seg );
if (ret) {
/* MZ_LoadImage created a new PSP and loaded new values into it,
* let's work on the new values now */
LPBYTE psp_start = (LPBYTE)((DWORD)DOSVM_psp << 4);
ExecBlock *blk = (ExecBlock *)paramblk;
LPBYTE cmdline = PTR_REAL_TO_LIN(SELECTOROF(blk->cmdline),OFFSETOF(blk->cmdline));
/* First character contains the length of the command line. */
MZ_FillPSP(psp_start, cmdline + 1, cmdline[0]);
/* the lame MS-DOS engineers decided that the return address should be in int22 */
DOSVM_SetRMHandler(0x22, (FARPROC16)MAKESEGPTR(context->SegCs, LOWORD(context->Eip)));
if (func) {
/* don't execute, just return startup state */
/*
* From Ralph Brown:
* For function 01h, the AX value to be passed to the child program
* is put on top of the child's stack
*/
LPBYTE stack;
init_sp -= 2;
stack = (LPBYTE) CTX_SEG_OFF_TO_LIN(context, init_ss, init_sp);
/* FIXME: push AX correctly */
stack[0] = 0x00; /* push AL */
stack[1] = 0x00; /* push AH */
blk->init_cs = init_cs;
blk->init_ip = init_ip;
blk->init_ss = init_ss;
blk->init_sp = init_sp;
} else {
/* execute by making us return to new process */
context->SegCs = init_cs;
context->Eip = init_ip;
context->SegSs = init_ss;
context->Esp = init_sp;
context->SegDs = DOSVM_psp;
context->SegEs = DOSVM_psp;
context->Eax = 0;
}
}
break;
case 3: /* load overlay */
{
OverlayBlock *blk = (OverlayBlock *)paramblk;
ret = MZ_DoLoadImage( hFile, filename, blk, 0);
}
break;
default:
FIXME("EXEC load type %d not implemented\n", func);
SetLastError(ERROR_INVALID_FUNCTION);
break;
}
CloseHandle(hFile);
return ret;
}
/***********************************************************************
* MZ_AllocDPMITask
*/
void WINAPI MZ_AllocDPMITask( void )
{
MZ_InitMemory();
MZ_InitTask();
}
/***********************************************************************
* MZ_RunInThread
*/
void WINAPI MZ_RunInThread( PAPCFUNC proc, ULONG_PTR arg )
{
if (loop_thread) {
DOS_SPC spc;
HANDLE event;
spc.proc = proc;
spc.arg = arg;
event = CreateEventW(NULL, TRUE, FALSE, NULL);
PostThreadMessageA(loop_tid, WM_USER, (WPARAM)event, (LPARAM)&spc);
WaitForSingleObject(event, INFINITE);
CloseHandle(event);
} else
proc(arg);
}
static DWORD WINAPI MZ_DOSVM( LPVOID lpExtra )
{
CONTEXT context;
DWORD ret;
dosvm_pid = getpid();
memset( &context, 0, sizeof(context) );
context.SegCs = init_cs;
context.Eip = init_ip;
context.SegSs = init_ss;
context.Esp = init_sp;
context.SegDs = DOSVM_psp;
context.SegEs = DOSVM_psp;
context.EFlags = V86_FLAG | VIF_MASK;
DOSVM_SetTimer(0x10000);
ret = DOSVM_Enter( &context );
dosvm_pid = 0;
return ret;
}
static BOOL MZ_InitTask(void)
{
if (!DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
GetCurrentProcess(), &loop_thread,
0, FALSE, DUPLICATE_SAME_ACCESS))
return FALSE;
dosvm_thread = CreateThread(NULL, 0, MZ_DOSVM, NULL, CREATE_SUSPENDED, &dosvm_tid);
if (!dosvm_thread) {
CloseHandle(loop_thread);
loop_thread = 0;
return FALSE;
}
loop_tid = GetCurrentThreadId();
return TRUE;
}
static void MZ_Launch( LPCSTR cmdtail, int length )
{
TDB *pTask = GlobalLock16( GetCurrentTask() );
BYTE *psp_start = PTR_REAL_TO_LIN( DOSVM_psp, 0 );
DWORD rv;
SYSLEVEL *lock;
MZ_FillPSP(psp_start, cmdtail, length);
pTask->flags |= TDBF_WINOLDAP;
/* DTA is set to PSP:0080h when a program is started. */
pTask->dta = MAKESEGPTR( DOSVM_psp, 0x80 );
GetpWin16Lock( &lock );
_LeaveSysLevel( lock );
ResumeThread(dosvm_thread);
rv = DOSVM_Loop(dosvm_thread);
CloseHandle(dosvm_thread);
dosvm_thread = 0; dosvm_tid = 0;
CloseHandle(loop_thread);
loop_thread = 0; loop_tid = 0;
VGA_Clean();
ExitProcess(rv);
}
/***********************************************************************
* MZ_Exit
*/
void WINAPI MZ_Exit( CONTEXT86 *context, BOOL cs_psp, WORD retval )
{
if (DOSVM_psp) {
WORD psp_seg = cs_psp ? context->SegCs : DOSVM_psp;
LPBYTE psp_start = (LPBYTE)((DWORD)psp_seg << 4);
PDB16 *psp = (PDB16 *)psp_start;
WORD parpsp = psp->parentPSP; /* check for parent DOS process */
if (parpsp) {
/* retrieve parent's return address */
FARPROC16 retaddr = DOSVM_GetRMHandler(0x22);
/* restore interrupts */
DOSVM_SetRMHandler(0x22, psp->savedint22);
DOSVM_SetRMHandler(0x23, psp->savedint23);
DOSVM_SetRMHandler(0x24, psp->savedint24);
/* FIXME: deallocate file handles etc */
/* free process's associated memory
* FIXME: walk memory and deallocate all blocks owned by process */
DOSMEM_FreeBlock( PTR_REAL_TO_LIN(psp->environment,0) );
DOSMEM_FreeBlock( PTR_REAL_TO_LIN(DOSVM_psp,0) );
/* switch to parent's PSP */
DOSVM_psp = parpsp;
psp_start = (LPBYTE)((DWORD)parpsp << 4);
psp = (PDB16 *)psp_start;
/* now return to parent */
DOSVM_retval = retval;
context->SegCs = SELECTOROF(retaddr);
context->Eip = OFFSETOF(retaddr);
context->SegSs = SELECTOROF(psp->saveStack);
context->Esp = OFFSETOF(psp->saveStack);
return;
} else
TRACE("killing DOS task\n");
}
ExitThread( retval );
}
/***********************************************************************
* MZ_Current
*/
BOOL WINAPI MZ_Current( void )
{
return (dosvm_pid != 0); /* FIXME: do a better check */
}
#else /* !MZ_SUPPORTED */
/***********************************************************************
* wine_load_dos_exe (WINEDOS.@)
*/
void WINAPI wine_load_dos_exe( LPCSTR filename, LPCSTR cmdline )
{
WARN("DOS executables not supported on this platform\n");
SetLastError(ERROR_BAD_FORMAT);
}
/***********************************************************************
* MZ_Exec
*/
BOOL WINAPI MZ_Exec( CONTEXT86 *context, LPCSTR filename, BYTE func, LPVOID paramblk )
{
/* can't happen */
SetLastError(ERROR_BAD_FORMAT);
return FALSE;
}
/***********************************************************************
* MZ_AllocDPMITask
*/
void WINAPI MZ_AllocDPMITask( void )
{
ERR("Actual real-mode calls not supported on this platform!\n");
}
/***********************************************************************
* MZ_RunInThread
*/
void WINAPI MZ_RunInThread( PAPCFUNC proc, ULONG_PTR arg )
{
proc(arg);
}
/***********************************************************************
* MZ_Exit
*/
void WINAPI MZ_Exit( CONTEXT86 *context, BOOL cs_psp, WORD retval )
{
ExitThread( retval );
}
/***********************************************************************
* MZ_Current
*/
BOOL WINAPI MZ_Current( void )
{
return FALSE;
}
#endif /* !MZ_SUPPORTED */
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