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Mail Archives: djgpp/1999/09/27/14:56:04

From: Waldemar Schultz <schultz AT ma DOT tum DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: CWS DPMI why does this program crash ?
Date: Mon, 27 Sep 1999 18:02:17 +0200
Organization: [posted via] Leibniz-Rechenzentrum, Muenchen (Germany)
Lines: 191
Distribution: world
Message-ID: <37EF9509.6037786A@ma.tum.de>
References: <7so38g$ns6$1 AT news6 DOT svr DOT pol DOT co DOT uk>
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

>alloc.exe
===========================================================================

 29 MB  1e0684c
 30 MB  1f0a84c
 31 MB  200e84c
Exiting due to signal SIGSEGV
General Protection Fault at eip=00003823
eax=448b3600 ebx=020d03f8 ecx=00000410 edx=020d03fc esi=020d080c
edi=00000410
ebp=0008dc9c esp=0008dc88 program=C:\USR\FGSM\H2O\SIM\ALLOC.EXE
cs: sel=00a7  base=10000000  limit=020dffff
ds: sel=00af  base=10000000  limit=020dffff
es: sel=00af  base=10000000  limit=020dffff
fs: sel=008f  base=00009840  limit=0000ffff
gs: sel=00bf  base=00000000  limit=0010ffff
ss: sel=00af  base=10000000  limit=020dffff
App stack: [0008dcec..0000dcec]  Exceptn stack: [0000dbd4..0000bc94]

Call frame traceback EIPs:
  0x00003823   _malloc+551
  0x000020a2   _calloc+18
  0x00001584   _main+20, line 18 of alloc.c
  0x00001c72   ___crt1_startup+174


gcc
===============================================================================

Reading specs from d:/djgpp/lib/specs
gcc version 2.8.1
 d:/djgpp/lib/gcc-lib/djgpp/2.81/cpp.exe -lang-c -v -undef -D__GNUC__=2
-D__GNUC_MINOR__=8 -Dunix -Di386 -DGO32 -DMSDOS -DDJGPP=2
-DDJGPP_MINOR=2 -D__unix__ -D__i386__ -D__GO32__ -D__MSDOS__
-D__DJGPP__=2 -D__DJGPP_MINOR__=2 -D__unix -D__i386 -D__GO32 -D__MSDOS
-D__DJGPP=2 -D__DJGPP_MINOR=2 -g alloc.c c:/temp\ccaqls3i
GNU CPP version 2.8.1 (80386, BSD syntax)
#include "..." search starts here:
#include <...> search starts here:
 d:/djgpp/include
 C:/usr/include
 d:/djgpp/contrib/include
 d:/djgpp/lib/gcc-lib/djgpp/2.81/include
 d:/djgpp/include
End of search list.
 d:/djgpp/lib/gcc-lib/djgpp/2.81/cc1.exe c:/temp\ccaqls3i -m486
-malign-jumps=2 -malign-loops=2 -malign-functions=2 -quiet -dumpbase
alloc.c -g -version -o c:/temp\ccbqls3i
GNU C version 2.8.1 (djgpp) compiled by GNU C version 2.8.1.
 d:/djgpp/bin/as.exe -o c:/temp\cccqls3i c:/temp\ccbqls3i
 d:/djgpp/bin/ld.exe -o alloc.exe d:/djgpp/lib/crt0.o -Ld:/djgpp/lib
-Ld:/djgpp/contrib/lib -Ld:/djgpp/lib/gcc-lib/djgpp/2.81 -Ld:/djgpp/bin
-Ld:/djgpp/lib c:/temp\cccqls3i -Tdjgpp.djl -lgcc -lc -lgcc
 d:/djgpp/bin/stubify.exe -v alloc.exe
stubify for djgpp V2.X executables, Copyright (C) 1995 DJ Delorie
stubify: alloc.exe -> alloc.000 -> alloc.exe


alloc.c
===================================================================
#include <stdio.h>
#include <malloc.h>

int main(void)
{
unsigned long i;
char *mem=NULL;
size_t nn;

 #define KILO 1024L
 #define MEGA (KILO*KILO)
 #define GIGA (KILO*MEGA)

 nn=KILO;

 for(i=0; ;i+=nn)   /*forever*/
 {
  mem=(char *)calloc(nn,1);
  if(!mem)
   break;
  if(!(i%MEGA))
  {
   printf("%3ld MB %8p\n",i/MEGA,mem);
   fflush(stdout);
  }
 }

 return 0;
}


cwsdpmi
====================================================================
CWSDPMI V0.90+ (r4) Copyright (C) 1997 CW Sandmann  ABSOLUTELY NO
WARRANTY


cwsparam
====================================================================
Full name of paging file ("" to disable) ? [H:\cwsdpmi.swp]
Number of page tables to initially allocate (0=auto) ? [0]
Minimum application memory desired before 640K paging ? [512Kb]
Paragraphs of DOS memory to reserve when 640K paging ? [3840]
Paragraphs of memory for extra CWSDPMI internal heap ? [16384]
Maximum number of 4K pages in swap file ? [32767]
Value of run option flags ? [0]



go32/v2 version 2.0 built Nov 15 1998 14:36:43
=======================================================================
Usage: go32 coff-image [args]
Rename this to go32.exe only if you need a go32 that can run v2 binaries
as
 well as v1 binaries (old makefiles).  Put ahead of the old go32 in your
PATH
 but do not delete your old go32 - leave it in the PATH after this one.
Set GO32_V2_DEBUG=y in the environment to get verbose output.

DPMI memory available: 33285 Kb
DPMI swap space available: 129911 Kb


mem.exe (BTW the machine runs a PII with 128 MB Ram installed !! ??)
========================================================================

Speichertyp               Insgesamt  =   Verwendet  +     Frei
-----------------         ----------     ---------      ---------
Konventioneller                 640K           38K           602K
Hoher                           134K          103K            31K
Reserviert                        0K            0K             0K
Erweiterung (XMS)            82.289K       16.754K        65.535K
-----------------         ----------     ---------      ---------
Insg. Speicher               83.063K       16.894K        66.169K

Insg. unter 1 MB                774K          141K           634K

Maximale GrӇe fr ausfhrbares Programm           602K  (616.640 Byte)
GrӇter freier Block im hohen Speicherblock         21K   (21.824 Byte)
MS-DOS ist resident im oberen Speicherbereich (High Memory Area).


config.sys
=========================================================================

DEVICE=C:\sys\HIMEM.SYS  /testmem:off
DEVICE=C:\sys\EMM386.EXE NOEMS

rem -----------------GCC optimal ??? what's best ???
rem :: DEVICE=C:\sys\EMM386.EXE NOEMS NOVCPI
rem :: DEVICE=C:\sys\EMM386.EXE NOEMS NOVCPI L=640
rem :: DEVICE=C:\sys\EMM386.EXE NOEMS ROM=C000-C800 I=E000-EFFF

DOS=UMB,HIGH

FILES=30
break=on

shell=C:\COMMAND.COM C:\ /E:8192 /P
COUNTRY=049,850,C:\dos\COUNTRY.SYS

rem -------SCSI-HOST
DEVICEHIGH C:\sys\SCSI\ASPI8DOS.SYS /D
rem -------SCSI-JAZ-HDISK
DEVICEHIGH C:\sys\SCSI\ASPIDISK.SYS /D
rem -------CDROM
rem :::::::DEVICEHIGH C:\sys\SCSI\ASPICD.SYS /D:ASPICD0
rem -------DISKCACHE
DEVICEhigh C:\dos\ANSI.SYS


ver
==========================================================
MS-DOS Version 6.22
Revision A
DOS ist im oberen Speicherbereich (High Memory Area)

any help highly appreciated!
_____________________

 Waldemar Schultz
 Technische Universität München
 Zentrum Mathematik M1, SCA
 D 80290 München

 Tel: +49 (0)89 2892 8226
 FAX: +49 (0)89 2892 8228
 e-mail: schultz AT ma DOT tum DOT de
 ________________________________________


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