com32/modules/stubs/swapstub.asm

   1         bits 16
   2 swap:
   3         push bx
   4         movzx bx,dl
   5         mov dl,[cs:bx+(table-$$)]
   6         pop bx
   7 .jmp:   jmp 0:0
   8         nop
   9         nop
  10 install:
  11         ;; DS = CS, ES = 0
  12         mov edi,[es:si+4*0x13]
  13         mov [swap.jmp+1],edi
  14         mov di,[es:0x413]
  15         dec di
  16         mov [es:0x413],di
  17         shl edi,16+6
  18         mov [es:si+4*0x13],edi
  19         shr edi,16
  20         mov es,di
  21         xor di,di
  22         rep movsd
  23         mov si,0
  24         mov di,0
  25         mov ds,si
  26         mov es,di
  27         mov ecx,0
  28         mov esi,0
  29         mov edi,0
  30         jmp 0:0
  31
  32         align 16
  33 table: