static void bch(unsigned fn, _go32_dpmi_registers* r)
{
static const unsigned pci_stack_size = 2048;
_go32_dpmi_seginfo si;
int go32_ec;
assert(pci_stack_size <= 65536);
r->h.ah = PCI_FUNCTION_ID;
r->h.al = fn;
memset(&si, 0, sizeof(si));
si.size = (pci_stack_size + 15) / 16;
go32_ec = _go32_dpmi_allocate_dos_memory(&si);
if(go32_ec != 0)
{
fprintf(stderr, "DOS memory allocation failed: %d\n", go32_ec);
abort();
}
r->x.ss = si.rm_segment;
r->x.sp = pci_stack_size;
go32_ec = _go32_dpmi_simulate_int(0x1A, r);
if(go32_ec != 0)
{
_go32_dpmi_free_dos_memory(&si);
fprintf(stderr, "Simulate int failed: %d\n", go32_ec);
abort();
}
_go32_dpmi_free_dos_memory(&si);
}
/* install the real-mode critical error handler
*/
void hard_error_catch_setup(void)
{
/* On first call, allocate some DOS memory and copy the handler into it
*/
if(!handler_installed) {
handler_installed = TRUE;
new_handler_info.size = old_handler_info.size = 1;
if (_go32_dpmi_allocate_dos_memory(&new_handler_info) != 0) {
fprintf(stderr,"Couldn't allocate handler memory\n");
exit(1);
}
dosmemput(handler, 16, new_handler_info.rm_segment * 16);
#ifdef XDEBUG
sprintf(Tempbuf, "Handler at segment %x", new_handler_info.rm_segment);
error_msg(Tempbuf, 0);
#endif
}
_go32_dpmi_get_real_mode_interrupt_vector(0x24, &old_handler_info);
_go32_dpmi_set_real_mode_interrupt_vector(0x24, &new_handler_info);
clear_hard_error();
return;
}
