Hello Darin,

On May 28 22:23 96, Darin McBride of 1:342/708 wrote:

 DM> DosCreateSem is available in the 16-bit world, but not the 32-bit world.  
 DM> So I have to link with the 16-bit library to get them.  It won't link 
 DM> with OS2386.LIB.

 MS>> 32bit programs. (os2286.lib is for 16bit programs).

 DM> Not here - /WATCOM/lib286/os2/os2.lib is for 16-bit 
 DM> programs.  /WATCOM/lib386/os2/os2286.lib is for 32-bit 
 DM> programs.

 DM> Either way - Dos* or Dos16* - the program gives a Sys3175 
 DM> *before* my code starts.

ok. as i said i don't know how clever watcom is. 

a) OS/2 Toolkit ships with 2 DLLs

   OS2286.LIB ... for 16bit code
   OS2386.LIB ... for 32bit code

b) OS2286.LIB has the DosSem* functions (NOT usable in 32bit code)
c) OS2386.LIB has the Dos16* functions (usable in 32bit code)

(here's from the lib:

00403:DOS16CREATESEM (OFFSET:0x00006bd0, SIZE:0x0000003a):
00404:DOS16OPENSEM (OFFSET:0x00006c10, SIZE:0x00000036):
00400:DOS16SEMSETWAIT (OFFSET:0x00006b10, SIZE:0x0000003c):
00499:DOS16SEMREQUEST (OFFSET:0x000083f0, SIZE:0x0000003c):
00500:DOS16SEMCLEAR (OFFSET:0x00008430, SIZE:0x00000038):
00501:DOS16SEMWAIT (OFFSET:0x00008470, SIZE:0x00000036):
00502:DOS16SEMSET (OFFSET:0x000084b0, SIZE:0x00000034):
00937:DOSPM16SEMCHK (OFFSET:0x0000f9e0, SIZE:0x00000038):
00938:DOS32PM16SEMCHK (OFFSET:0x0000fa20, SIZE:0x0000003c):
00943:DOSPM16SEMRST (OFFSET:0x0000fb90, SIZE:0x00000038):
00944:DOS32PM16SEMRST (OFFSET:0x0000fbd0, SIZE:0x0000003c):

I've now written a small testprogram with VACPP and compiled it and it did
NOT trap. here's the source, the compile option and the disasm. (maybe
WATCOM misses some DosFlat2Sel calls for parameter conversion ???)

#define INCL_DOS
#include 

 #define CSEM_PRIVATE            0
 #define CSEM_PUBLIC             1

 #define Dos16CreateSem     DOS16CREATESEM
 #define DosCreateSem       DOS16CREATESEM

 typedef LHANDLE HSYSSEM;        /* hssm */
 typedef HSYSSEM FAR *PHSYSSEM;

 APIRET16 APIENTRY16 DosCreateSem(USHORT fExclusive
                                 ,PHSYSSEM phsem
                                 ,PSZ pszSemName);

main(int argc, char *argv[], char *envp[])
{
 HSYSSEM hssm;
 APIRET16 rc=DosCreateSem(CSEM_PRIVATE,
    &hssm,
    "\\sem\\abc.sem");
}

/**************
main    proc
        push    010h
        push    0106eh
        call    __EDCThunkProlog
        push    ebp
        mov     ebp,esp
        sub     esp,08h
        mov     [ebp+0ch],eax;  argc
        mov     [ebp+010h],edx; argv
        mov     [ebp+014h],ecx; envp

        sub     esp,03ah
        push    word ptr 0h
        lea     eax,[ebp-08h];  hssm
        call    _DosFlatToSel
        push    eax
        mov     eax,offset FLAT:{at}CBE1
        call    _DosFlatToSel
        push    eax
        push    0ah
        push    eax
        mov     eax,offset FLAT: DOS16CREATESEM
        call    _DosFlatToSel
        xchg    eax, dword ptr[esp]
        push    0h
        call    __EDC3216
        add     esp,050h
        mov     [ebp-02h],ax;   rc

        xor     eax,eax
        leave
        pop     esp
        ret
*******************/


 > I cannot find either DOSCREATESEM or DOS16CREATESEM in *any* DLL in the
 > /os2/dll directory.  And yet, both are available in the OS2286.LIB file...?

yes. (and DosSemRequest is in DosCall1.Dll). i'm not sure what is called,
but in the debugger i can see that there is some code called. 

(maybe the function is exported only be ordinal and not by name?)

(the ordinal values can be found in bseord.h:
#define ORD_DOSCLOSESEM                 23
#define ORD_DOSCREATESEM                24
#define ORD_DOSOPENSEM                  25
...
)

 WARPED!, Mario

--- Msgedsq/2 2.2e