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c5bdfdfb2d
This avoids deadlocks with the loader lock.
812 lines
22 KiB
C
812 lines
22 KiB
C
/*
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* DOS (MZ) loader
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*
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* Copyright 1998 Ove Kåven
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* Note: This code hasn't been completely cleaned up yet.
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <signal.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <sys/types.h>
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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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#include "windef.h"
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#include "winbase.h"
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#include "wine/winbase16.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "winerror.h"
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#include "wine/debug.h"
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#include "dosexe.h"
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#include "dosvm.h"
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#include "vga.h"
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WINE_DEFAULT_DEBUG_CHANNEL(module);
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static BOOL DOSVM_isdosexe;
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/**********************************************************************
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* DOSVM_IsWin16
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*
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* Return TRUE if we are in Windows process.
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*/
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BOOL DOSVM_IsWin16(void)
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{
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return DOSVM_isdosexe ? FALSE : TRUE;
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}
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/**********************************************************************
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* DOSVM_Exit
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*/
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void DOSVM_Exit( WORD retval )
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{
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DWORD count;
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ReleaseThunkLock( &count );
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ExitThread( retval );
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}
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#ifdef MZ_SUPPORTED
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#ifdef HAVE_SYS_MMAN_H
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# include <sys/mman.h>
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#endif
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/* define this to try mapping through /proc/pid/mem instead of a temp file,
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but Linus doesn't like mmapping /proc/pid/mem, so it doesn't work for me */
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#undef MZ_MAPSELF
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#define BIOS_DATA_SEGMENT 0x40
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#define PSP_SIZE 0x10
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#define SEG16(ptr,seg) ((LPVOID)((BYTE*)ptr+((DWORD)(seg)<<4)))
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#define SEGPTR16(ptr,segptr) ((LPVOID)((BYTE*)ptr+((DWORD)SELECTOROF(segptr)<<4)+OFFSETOF(segptr)))
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/* structures for EXEC */
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#include "pshpack1.h"
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typedef struct {
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WORD env_seg;
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DWORD cmdline;
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DWORD fcb1;
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DWORD fcb2;
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WORD init_sp;
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WORD init_ss;
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WORD init_ip;
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WORD init_cs;
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} ExecBlock;
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typedef struct {
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WORD load_seg;
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WORD rel_seg;
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} OverlayBlock;
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#include "poppack.h"
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/* global variables */
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pid_t dosvm_pid;
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static WORD init_cs,init_ip,init_ss,init_sp;
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static HANDLE dosvm_thread, loop_thread;
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static DWORD dosvm_tid, loop_tid;
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static void MZ_Launch( LPCSTR cmdtail, int length );
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static BOOL MZ_InitTask(void);
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static void MZ_CreatePSP( LPVOID lpPSP, WORD env, WORD par )
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{
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PDB16*psp=lpPSP;
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psp->int20=0x20CD; /* int 20 */
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/* some programs use this to calculate how much memory they need */
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psp->nextParagraph=0x9FFF; /* FIXME: use a real value */
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/* FIXME: dispatcher */
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psp->savedint22 = DOSVM_GetRMHandler(0x22);
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psp->savedint23 = DOSVM_GetRMHandler(0x23);
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psp->savedint24 = DOSVM_GetRMHandler(0x24);
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psp->parentPSP=par;
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psp->environment=env;
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/* FIXME: more PSP stuff */
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}
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static void MZ_FillPSP( LPVOID lpPSP, LPCSTR cmdtail, int length )
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{
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PDB16 *psp = lpPSP;
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if(length > 127)
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{
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WARN( "Command tail truncated! (length %d)\n", length );
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length = 126;
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}
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psp->cmdLine[0] = length;
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/*
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* Length of exactly 127 bytes means that full command line is
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* stored in environment variable CMDLINE and PSP contains
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* command tail truncated to 126 bytes.
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*/
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if(length == 127)
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length = 126;
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if(length > 0)
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memmove(psp->cmdLine+1, cmdtail, length);
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psp->cmdLine[length+1] = '\r';
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/* FIXME: more PSP stuff */
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}
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static WORD MZ_InitEnvironment( LPCSTR env, LPCSTR name )
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{
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unsigned sz=0;
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unsigned i=0;
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WORD seg;
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LPSTR envblk;
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if (env) {
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/* get size of environment block */
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while (env[sz++]) sz+=strlen(env+sz)+1;
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} else sz++;
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/* allocate it */
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envblk=DOSMEM_AllocBlock(sz+sizeof(WORD)+strlen(name)+1,&seg);
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/* fill it */
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if (env) {
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memcpy(envblk,env,sz);
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} else envblk[0]=0;
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/* DOS environment variables are uppercase */
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while (envblk[i]){
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while (envblk[i] != '='){
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if (envblk[i]>='a' && envblk[i] <= 'z'){
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envblk[i] -= 32;
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}
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i++;
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}
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i += strlen(envblk+i) + 1;
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}
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/* DOS 3.x: the block contains 1 additional string */
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*(WORD*)(envblk+sz)=1;
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/* being the program name itself */
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strcpy(envblk+sz+sizeof(WORD),name);
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return seg;
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}
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static BOOL MZ_InitMemory(void)
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{
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/* initialize the memory */
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TRACE("Initializing DOS memory structures\n");
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DOSMEM_MapDosLayout();
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DOSDEV_InstallDOSDevices();
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MSCDEX_InstallCDROM();
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return TRUE;
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}
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static BOOL MZ_DoLoadImage( HANDLE hFile, LPCSTR filename, OverlayBlock *oblk, WORD par_env_seg )
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{
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IMAGE_DOS_HEADER mz_header;
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DWORD image_start,image_size,min_size,max_size,avail;
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BYTE*psp_start,*load_start;
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LPSTR oldenv = 0;
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int x, old_com=0, alloc;
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SEGPTR reloc;
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WORD env_seg, load_seg, rel_seg, oldpsp_seg;
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DWORD len;
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if (DOSVM_psp) {
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/* DOS process already running, inherit from it */
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PDB16* par_psp;
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alloc=0;
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oldpsp_seg = DOSVM_psp;
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if( !par_env_seg) {
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par_psp = (PDB16*)((DWORD)DOSVM_psp << 4);
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oldenv = (LPSTR)((DWORD)par_psp->environment << 4);
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}
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} else {
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/* allocate new DOS process, inheriting from Wine environment */
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alloc=1;
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oldpsp_seg = 0;
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if( !par_env_seg)
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oldenv = GetEnvironmentStringsA();
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}
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SetFilePointer(hFile,0,NULL,FILE_BEGIN);
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if ( !ReadFile(hFile,&mz_header,sizeof(mz_header),&len,NULL)
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|| len != sizeof(mz_header)
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|| mz_header.e_magic != IMAGE_DOS_SIGNATURE) {
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char *p = strrchr( filename, '.' );
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if (!p || strcasecmp( p, ".com" )) /* check for .COM extension */
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{
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SetLastError(ERROR_BAD_FORMAT);
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goto load_error;
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}
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old_com=1; /* assume .COM file */
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image_start=0;
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image_size=GetFileSize(hFile,NULL);
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min_size=0x10000; max_size=0x100000;
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mz_header.e_crlc=0;
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mz_header.e_ss=0; mz_header.e_sp=0xFFFE;
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mz_header.e_cs=0; mz_header.e_ip=0x100;
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} else {
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/* calculate load size */
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image_start=mz_header.e_cparhdr<<4;
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image_size=mz_header.e_cp<<9; /* pages are 512 bytes */
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/* From Ralf Brown Interrupt List: If the word at offset 02h is 4, it should
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* be treated as 00h, since pre-1.10 versions of the MS linker set it that
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* way. */
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if ((mz_header.e_cblp!=0)&&(mz_header.e_cblp!=4)) image_size-=512-mz_header.e_cblp;
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image_size-=image_start;
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min_size=image_size+((DWORD)mz_header.e_minalloc<<4)+(PSP_SIZE<<4);
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max_size=image_size+((DWORD)mz_header.e_maxalloc<<4)+(PSP_SIZE<<4);
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}
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if (alloc) MZ_InitMemory();
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if (oblk) {
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/* load overlay into preallocated memory */
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load_seg=oblk->load_seg;
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rel_seg=oblk->rel_seg;
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load_start=(LPBYTE)((DWORD)load_seg<<4);
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} else {
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/* allocate environment block */
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if( par_env_seg)
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env_seg = par_env_seg;
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else
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env_seg=MZ_InitEnvironment(oldenv, filename);
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if (alloc)
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FreeEnvironmentStringsA( oldenv);
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/* allocate memory for the executable */
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TRACE("Allocating DOS memory (min=%d, max=%d)\n",min_size,max_size);
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avail=DOSMEM_Available();
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if (avail<min_size) {
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ERR("insufficient DOS memory\n");
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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goto load_error;
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}
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if (avail>max_size) avail=max_size;
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psp_start=DOSMEM_AllocBlock(avail,&DOSVM_psp);
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if (!psp_start) {
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ERR("error allocating DOS memory\n");
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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goto load_error;
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}
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load_seg=DOSVM_psp+(old_com?0:PSP_SIZE);
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rel_seg=load_seg;
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load_start=psp_start+(PSP_SIZE<<4);
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MZ_CreatePSP(psp_start, env_seg, oldpsp_seg);
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}
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/* load executable image */
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TRACE("loading DOS %s image, %08x bytes\n",old_com?"COM":"EXE",image_size);
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SetFilePointer(hFile,image_start,NULL,FILE_BEGIN);
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if (!ReadFile(hFile,load_start,image_size,&len,NULL) || len != image_size) {
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/* check if this is due to the workaround for the pre-1.10 MS linker and we
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really had only 4 bytes on the last page */
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if (mz_header.e_cblp != 4 || image_size - len != 512 - 4) {
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SetLastError(ERROR_BAD_FORMAT);
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goto load_error;
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}
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}
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if (mz_header.e_crlc) {
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/* load relocation table */
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TRACE("loading DOS EXE relocation table, %d entries\n",mz_header.e_crlc);
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/* FIXME: is this too slow without read buffering? */
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SetFilePointer(hFile,mz_header.e_lfarlc,NULL,FILE_BEGIN);
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for (x=0; x<mz_header.e_crlc; x++) {
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if (!ReadFile(hFile,&reloc,sizeof(reloc),&len,NULL) || len != sizeof(reloc)) {
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SetLastError(ERROR_BAD_FORMAT);
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goto load_error;
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}
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*(WORD*)SEGPTR16(load_start,reloc)+=rel_seg;
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}
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}
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if (!oblk) {
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init_cs = load_seg+mz_header.e_cs;
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init_ip = mz_header.e_ip;
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init_ss = load_seg+mz_header.e_ss;
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init_sp = mz_header.e_sp;
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if (old_com){
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/* .COM files exit with ret. Make sure they jump to psp start (=int 20) */
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WORD* stack = PTR_REAL_TO_LIN(init_ss, init_sp);
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*stack = 0;
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}
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TRACE("entry point: %04x:%04x\n",init_cs,init_ip);
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}
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if (alloc && !MZ_InitTask()) {
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SetLastError(ERROR_GEN_FAILURE);
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return FALSE;
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}
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return TRUE;
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load_error:
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DOSVM_psp = oldpsp_seg;
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return FALSE;
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}
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/***********************************************************************
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* wine_load_dos_exe (WINEDOS.@)
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*
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* Called from WineVDM when a new real-mode DOS process is started.
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* Loads DOS program into memory and executes the program.
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*/
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void WINAPI wine_load_dos_exe( LPCSTR filename, LPCSTR cmdline )
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{
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char dos_cmdtail[126];
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int dos_length = 0;
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HANDLE hFile = CreateFileA( filename, GENERIC_READ, FILE_SHARE_READ,
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NULL, OPEN_EXISTING, 0, 0 );
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if (hFile == INVALID_HANDLE_VALUE) return;
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DOSVM_isdosexe = TRUE;
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if(cmdline && *cmdline)
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{
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dos_length = strlen(cmdline);
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memmove( dos_cmdtail + 1, cmdline,
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(dos_length < 125) ? dos_length : 125 );
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/* Non-empty command tail always starts with at least one space. */
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dos_cmdtail[0] = ' ';
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dos_length++;
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/*
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* If command tail is longer than 126 characters,
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* set tail length to 127 and fill CMDLINE environment variable
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* with full command line (this includes filename).
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*/
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if (dos_length > 126)
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{
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char *cmd = HeapAlloc( GetProcessHeap(), 0,
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dos_length + strlen(filename) + 4 );
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char *ptr = cmd;
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if (!cmd)
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return;
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/*
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* Append filename. If path includes spaces, quote the path.
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*/
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if (strchr(filename, ' '))
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{
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*ptr++ = '\"';
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strcpy( ptr, filename );
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ptr += strlen(filename);
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*ptr++ = '\"';
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}
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else
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{
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strcpy( ptr, filename );
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ptr += strlen(filename);
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}
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/*
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* Append command tail.
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*/
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if (cmdline[0] != ' ')
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*ptr++ = ' ';
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strcpy( ptr, cmdline );
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/*
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* Set environment variable. This will be passed to
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* new DOS process.
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*/
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if (!SetEnvironmentVariableA( "CMDLINE", cmd ))
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{
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HeapFree(GetProcessHeap(), 0, cmd );
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return;
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}
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HeapFree(GetProcessHeap(), 0, cmd );
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dos_length = 127;
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}
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}
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if (MZ_DoLoadImage( hFile, filename, NULL, 0 ))
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MZ_Launch( dos_cmdtail, dos_length );
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}
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/***********************************************************************
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* MZ_Exec
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*
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* this may only be called from existing DOS processes
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*/
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BOOL WINAPI MZ_Exec( CONTEXT86 *context, LPCSTR filename, BYTE func, LPVOID paramblk )
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{
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DWORD binType;
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STARTUPINFOA st;
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PROCESS_INFORMATION pe;
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HANDLE hFile;
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BOOL ret = FALSE;
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if(!GetBinaryTypeA(filename, &binType)) /* determine what kind of binary this is */
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{
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return FALSE; /* binary is not an executable */
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}
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/* handle non-dos executables */
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if(binType != SCS_DOS_BINARY)
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{
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if(func == 0) /* load and execute */
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{
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LPSTR fullCmdLine;
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WORD fullCmdLength;
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LPBYTE psp_start = (LPBYTE)((DWORD)DOSVM_psp << 4);
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PDB16 *psp = (PDB16 *)psp_start;
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ExecBlock *blk = paramblk;
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LPBYTE cmdline = PTR_REAL_TO_LIN(SELECTOROF(blk->cmdline),OFFSETOF(blk->cmdline));
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LPBYTE envblock = PTR_REAL_TO_LIN(psp->environment, 0);
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int cmdLength = cmdline[0];
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/*
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* If cmdLength is 127, command tail is truncated and environment
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* variable CMDLINE should contain full command line
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* (this includes filename).
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*/
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if (cmdLength == 127)
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{
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FIXME( "CMDLINE argument passing is unimplemented.\n" );
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cmdLength = 126; /* FIXME */
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}
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fullCmdLength = (strlen(filename) + 1) + cmdLength + 1; /* filename + space + cmdline + terminating null character */
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fullCmdLine = HeapAlloc(GetProcessHeap(), 0, fullCmdLength);
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if(!fullCmdLine) return FALSE; /* return false on memory alloc failure */
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/* build the full command line from the executable file and the command line being passed in */
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snprintf(fullCmdLine, fullCmdLength, "%s ", filename); /* start off with the executable filename and a space */
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memcpy(fullCmdLine + strlen(fullCmdLine), cmdline + 1, cmdLength); /* append cmdline onto the end */
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fullCmdLine[fullCmdLength - 1] = 0; /* null terminate string */
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ZeroMemory (&st, sizeof(STARTUPINFOA));
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st.cb = sizeof(STARTUPINFOA);
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ret = CreateProcessA (NULL, fullCmdLine, NULL, NULL, TRUE, 0, envblock, NULL, &st, &pe);
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/* wait for the app to finish and clean up PROCESS_INFORMATION handles */
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if(ret)
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{
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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 = 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, (LPSTR)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 = 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 = 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;
|
|
INT 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 );
|
|
if (ret == -1)
|
|
{
|
|
/* fetch the app name from the environment */
|
|
PDB16 *psp = PTR_REAL_TO_LIN( DOSVM_psp, 0 );
|
|
char *env = PTR_REAL_TO_LIN( psp->environment, 0 );
|
|
while (*env) env += strlen(env) + 1;
|
|
env += 1 + sizeof(WORD);
|
|
|
|
if (GetLastError() == ERROR_NOT_SUPPORTED)
|
|
MESSAGE( "wine: Cannot start DOS application %s\n"
|
|
" because vm86 mode is not supported on this platform.\n",
|
|
debugstr_a(env) );
|
|
else
|
|
FIXME( "vm86 mode failed error %u\n", GetLastError() );
|
|
}
|
|
dosvm_pid = 0;
|
|
return ret != 0;
|
|
}
|
|
|
|
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;
|
|
MSG msg;
|
|
|
|
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 );
|
|
|
|
/* force the message queue to be created */
|
|
PeekMessageW(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE);
|
|
|
|
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");
|
|
}
|
|
DOSVM_Exit( 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 )
|
|
{
|
|
FIXME("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 )
|
|
{
|
|
FIXME("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 )
|
|
{
|
|
DOSVM_Exit( retval );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* MZ_Current
|
|
*/
|
|
BOOL WINAPI MZ_Current( void )
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
#endif /* !MZ_SUPPORTED */
|