x86int.h

Test some scsi command for usb mass storage

typedef union {
  struct {
    UDWORD edi;
    UDWORD esi;
    UDWORD ebp;
    UDWORD res;
    UDWORD ebx;
    UDWORD edx;
    UDWORD ecx;
    UDWORD eax;
  } d;
  struct {
    UWORD di, di_hi;
    UWORD si, si_hi;
    UWORD bp, bp_hi;
    UWORD res, res_hi;
    UWORD bx, bx_hi;
    UWORD dx, dx_hi;
    UWORD cx, cx_hi;
    UWORD ax, ax_hi;
    UWORD flags;
    UWORD es;
    UWORD ds;
    UWORD fs;
    UWORD gs;
    UWORD ip;
    UWORD cs;
    UWORD sp;
    UWORD ss;
  } x;
  struct {
    UBYTE edi[4];
    UBYTE esi[4];
    UBYTE ebp[4];
    UBYTE res[4];
    UBYTE bl, bh, ebx_b2, ebx_b3;
    UBYTE dl, dh, edx_b2, edx_b3;
    UBYTE cl, ch, ecx_b2, ecx_b3;
    UBYTE al, ah, eax_b2, eax_b3;
  } h;
} X86_REGS;

/*************************************************************
 * Excute soft interrupt in real mode
 *************************************************************/
int x86_int(int int_num, X86_REGS *x86_reg) {
  __dpmi_regs d_regs;
  int return_value;

  d_regs.d.edi = x86_reg->d.edi;
  d_regs.d.esi = x86_reg->d.esi;
  d_regs.d.ebp = x86_reg->d.ebp;
  d_regs.d.res = x86_reg->d.res;
  d_regs.d.ebx = x86_reg->d.ebx;
  d_regs.d.ecx = x86_reg->d.ecx;
  d_regs.d.edx = x86_reg->d.edx;
  d_regs.d.eax = x86_reg->d.eax;
  d_regs.x.flags = x86_reg->x.flags;
  d_regs.x.es = x86_reg->x.es;
  d_regs.x.ds = x86_reg->x.ds;
  d_regs.x.fs = x86_reg->x.fs;
  d_regs.x.gs = x86_reg->x.gs;
  d_regs.x.ip = x86_reg->x.ip;
  d_regs.x.cs = x86_reg->x.cs;
  d_regs.x.sp = x86_reg->x.sp;
  d_regs.x.ss = x86_reg->x.ss;

  return_value = __dpmi_int(int_num, &d_regs);

  x86_reg->d.edi = d_regs.d.edi;
  x86_reg->d.esi = d_regs.d.esi;
  x86_reg->d.ebp = d_regs.d.ebp;
  x86_reg->d.res = d_regs.d.res;
  x86_reg->d.ebx = d_regs.d.ebx;
  x86_reg->d.ecx = d_regs.d.ecx;
  x86_reg->d.edx = d_regs.d.edx;
  x86_reg->d.eax = d_regs.d.eax;
  x86_reg->x.flags = d_regs.x.flags;
  x86_reg->x.es = d_regs.x.es;
  x86_reg->x.ds = d_regs.x.ds;
  x86_reg->x.fs = d_regs.x.fs;
  x86_reg->x.gs = d_regs.x.gs;
  x86_reg->x.ip = d_regs.x.ip;
  x86_reg->x.cs = d_regs.x.cs;
  x86_reg->x.sp = d_regs.x.sp;
  x86_reg->x.ss = d_regs.x.ss;

  return return_value;
}