lib/i386/em/em_lar4.s

   1 .sect .text; .sect .rom; .sect .data; .sect .bss
   2 .sect .text
   3 .define .lar4
   4
   5 .lar4:
   6                                 ! ebx, descriptor address
   7                                 ! eax, index
   8         sub     eax,(ebx)
   9         mov     ecx,8(ebx)
  10         imul    ecx
  11         pop     ebx
  12         pop     edx             ! base address
  13         add     edx,eax
  14         sar     ecx,1
  15         jnb     1f
  16         xor     eax,eax
  17         movb    al,(edx)
  18         push    eax
  19         jmp     ebx
  20 1:
  21         sar     ecx,1
  22         jnb     1f
  23         xor     eax,eax
  24         o16 mov ax,(edx)
  25         push    eax
  26         jmp     ebx
  27 1:
  28         xchg    edx,esi         ! saved esi
  29         mov     eax,ecx
  30         sal     eax,2
  31         sub     esp,eax
  32         mov     eax,edi         ! save edi
  33         mov     edi,esp
  34         rep movs
  35         mov     edi,eax
  36         mov     esi,edx
  37         jmp     ebx