DOS ain't dead

Voodoo1 (Users)

posted by Rugxulo , Usono, 27.01.2011, 00:28

> DXE3 is in the same complixity magnitude as DXE1, it should be fairly
> trivial.

I doubt it. I think DXE3 is a fair bit more complicated. Juan's recent "port" of Lua required DXE3, so it was DJGPP 2.04 only (instead of also 2.03p2).

In my lame paq8o8z-Jan13-src.zip is paq8fdxe.zip, which only uses DXE1 (for compatibility). It basically uses NOASM if no .DXE found else uses whatever is there (either two MMX or two SSE2 .DXEs) but with no CPUID checking! It's just a hack. I should probably put it on my website as a separate file under "other things" or whatever. But it's not too important I guess.

Here's a horribly simple example I included in there, if anybody is curious (doubt it):


/* DXE_EX.C -- stupid DXE example for DJGPP 2.03p2 and DJGPP 2.04
        rugxulo _AT_ gmail _DOT_ com
        http://rugxulo.googlepages.com
  @echo off
  gcc -DYO -c dxe_ex.c -o yo.o
  redir -eo ls /dev/env/DJDIR/bin/dxe3gen.exe >NUL
  if errorlevel 1 redir -eo dxegen yo.dxe _yo yo.o >NUL
  if not exist yo.dxe redir -eo dxe3gen -o yo.dxe yo.o
  if not exist yo.dxe redir -eo dxegen yo.dxe _yo yo.o >NUL
  gcc dxe_ex.c -o dxe_ex.exe
  if exist dxe_ex.exe dxe_ex.exe
  for %%a in (yo.dxe yo.o dxe_ex.exe) do if exist %%a del %%a
*/
#if !defined(DXE1) && !defined(DXE3)
#if __DJGPP_MINOR__ == 3
#define DXE1
#endif
#endif
#ifdef YO
yo() {
  asm(".intel_syntax noprefix");
  asm("mov al,0x48"); /* "H" */
  asm("int 0x29");    /* output char in AL to screen */
  asm("mov al,0x49"); /* "I" */
  asm("int 0x29");
  asm(".att_syntax prefix");
}
#else
#ifdef DXE1
#include <sys/dxe.h>
#else
#include <dlfcn.h>
#endif
#include <stdio.h>

int main() {

static void (*yo)(), *blah;

#ifdef DXE1
if (yo = _dxe_load("yo.dxe"))
  yo();
#else
if (blah=dlopen("yo.dxe",RTLD_GLOBAL)) {
  yo=dlsym(blah,"_yo");
  (*yo)();
}
#endif
else
  puts("\nCannot load YO.DXE");
return 0;
}
#endif


Complete thread:

• Voodoo1 - Laaca, 22.01.2011, 10:46 (Users)
  • Voodoo1 - marcov, 22.01.2011, 14:22
    • Voodoo1 - Rugxulo, 22.01.2011, 22:55
  • Voodoo1 - RayeR, 22.01.2011, 14:33
    • Voodoo1 - Laaca, 22.01.2011, 18:48
      • Voodoo1 - Rugxulo, 22.01.2011, 22:59
        • Voodoo1 - marcov, 23.01.2011, 23:28
          • Voodoo1 - Rugxulo, 27.01.2011, 00:28