source: trunk/minix/lib/i386/em/em_csa4.s@ 9

.sect .text; .sect .rom; .sect .data; .sect .bss
.define .csa4

.sect .text
.csa4:
                                ! ebx, descriptor address
                                ! eax, index
        mov     edx,(ebx)         ! default
        sub     eax,4(ebx)
        cmp     eax,8(ebx)
        ja      1f
        sal     eax,2
        add     ebx,eax
        mov     ebx,12(ebx)
        test    ebx,ebx
        jnz     2f
1:
        mov     ebx,edx
        test    ebx,ebx
        jnz     2f
.extern ECASE
.extern .fat
        mov     eax,ECASE
        push    eax
        jmp     .fat
2:
        jmp     ebx