; Name getseg -- Get current Segment Values;;; Synopsis getseg(pcs, pds, pes, pss, psi, pdi, psp, pflag);;; unsigned *cs Pointer to where code segment address goes; unsigned *ds Pointer to data segment; unsigned *es Pointer to extra segment; unsigned *ss Pointer to stack segment; unsigned *si Pointer to si register; unsigned *di Pointer to di register; unsigned *sp Pointer to sp register; unsigned *flag Returns flag;;; Returns cs value of Code segment; ds value of Data segment; es value of Extra segment; ss value of Stack segment; si value of SI register ****NOT RELIABLE****; di value of DI register; sp value of Stack Pointer; flag value of Flags register;;;pgroup group progprog segment byte public 'PROG' ; Combine with C 'PROG' program segment assume cs:pgroup public getseggetseg proc near push bp ; Save the frame pointer mov bp,sp mov si,[bp + 04] ; Get the values for the registers mov ax,[si] mov si,[bp + 06] mov bx, [si] mov si,[bp + 08] mov cx, [si] mov si,[bp + 10] mov dx,[si];============================================================================== mov ax, cs ;Get value of code segment mov bx, ds ;data segment mov cx, es ;extra segment mov dx, ss ;stack segment;==============================================================================uret: mov bp,sp ; Now recover the values of the mov si,[bp + 04] ; parameters mov [si],ax mov si, [bp + 06] mov [si], bx mov si, [bp + 08] mov [si], cx mov si, [bp + 10] mov [si], dx mov si, [bp + 12] mov [si], si mov si, [bp + 14] mov [si], di mov si, [bp + 16] mov [si], sp mov al, 00 ;zero out al lahf ;load flag into ah mov si, [bp + 18] mov [si], ax mov ax,0 ; No errorquit: pop bp ; Get the original frame pointer. retgetseg endpprog ends end
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