.define .lino,.filn .define EXIT .define begtext,begdata,begbss .define EARRAY,ERANGE,ESET,EIDIVZ,EHEAP,EILLINS,ECASE,EBADGTO .define hol0,.reghp,.limhp,.trpim,.trppc .sect .text .sect .rom .sect .data .sect .bss ! runtime startof for 68020 machine LINO_AD = 0 FILN_AD = 4 EARRAY = 0 ERANGE = 1 ESET = 2 EIDIVZ = 6 EHEAP = 17 EILLINS = 18 ECASE = 20 EBADGTO = 27 .sect .text begtext: move.l d0,(splimit) ! load splimit with the initial stack limit sub.l #8,sp move.l (8,sp),(sp) ! argc lea (12,sp),a0 move.l a0,(4,sp) ! argv move.l a0,a1 1: tst.l (a0)+ ! null args term? bne 1b cmp.l (a1),a0 ! end of 'argv[]' and in *argv[] strings? blt 2f ! skip if a0 is less than start of *argv[] sub.l #4,a0 ! else backup one to set env = 0 (NULL) 2: move.l a0,(8,sp) ! env ! move.l a0, environ ! indir is 0 if no env; not 0 if env ! jsr (initfpu) ! call to dummy floating point init routine jsr (__m_a_i_n) move.l d0,(sp) ! no stack cleanup needed EXIT: jsr (__exit) .sect .data begdata: splimit: .data4 0 ! may be at virtual address 0 with no problem hol0: .lino: .data4 0 ! lino .filn: .data4 0 ! filn .reghp: .data4 endbss .limhp: .data4 endbss .trppc: .data4 0 .trpim: .data4 0 ! USED TO BE 2 BYTES; IS THIS RIGHT? .sect .bss begbss: !initialization is not needed because ALL entries are in zero space!