Ok, I'll stop nagging after this message for a while.
I added to the Makefile:
timer.o:
$(CC) $(CFLAGS) -mgeneral-regs-only -mno-red-zone $< -o $@
And now it compile.
But when run:
Page fault CR2=00400002 in RMCB at eip 6; flags=3016
... error=0004
which I believe was what I was receiving when adding iret at the end.
---- Le lun., 02 oct. 2023 13:06:35 -0400 Paul Dufresne via Freedos-user a
écrit ----
> I have been able to rebuild the game using prebult cross-compiler from
> build-djgpp project.
>
> When I add __asm__("iret");
> program crash as soon as I launch it.
> Sorry not having the error now.
>
> I am trying to:
> __attribute__((interrupt))
> void timer_handler(void *frame)
> {
> ticks++;
> ...
>
> but getting:
> i586-pc-msdosdjgpp-gcc -I.
> -I/home/paul/Téléchargements/libmikmod-3.3.11.1/include -c -Wall -Werror
> -pedantic -O3 -fomit-frame-pointer -ffast-math -march=i386 vga.c -o vga.o
> timer.c: In function 'timer_handler':
> timer.c:17:1: sorry, unimplemented: 80387 instructions aren't allowed in an
> interrupt service routine
> 17 | {
> | ^
> make[1]: *** [Makefile:29: timer.o] Error 1
> make[1]: *** Waiting for unfinished jobs....
> make[1]: Leaving directory '/home/paul/my_gminer/gold-mine-run/src'
> make: *** [Makefile:2: all] Error 2
> paul@fedora:~/my_gminer/gold-mine-run2$
>
>
> Following:
> https://stackoverflow.com/questions/55437894/how-to-correctly-compile-interrupt-service-routine-using-gcc
> I have tried to add: -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow
> -mno-red-zone at the end of CFLAGS
> but it does not appears that my changes change the way the file is
> compiled...
>
> I think I am very bad at editing Makefiles!
>
>
>
>
>
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