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Diffstat (limited to 'gcc/config/m68k/mot3300Mcrt0.S')
-rwxr-xr-x | gcc/config/m68k/mot3300Mcrt0.S | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/gcc/config/m68k/mot3300Mcrt0.S b/gcc/config/m68k/mot3300Mcrt0.S new file mode 100755 index 0000000..539fe8e --- /dev/null +++ b/gcc/config/m68k/mot3300Mcrt0.S @@ -0,0 +1,142 @@ +/* The start module mcrt0.s for the SysV68 Motorola 3300 Delta Series. + Copyright (C) 1996, 1997 Free Software Foundation, Inc. + Contributed by Manfred Hollstein (manfred@lts.sel.alcatel.de). + +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#ifdef MOTOROLA +# define COMM comm +# define DATA data +# define EVEN even +# define FILE(n) file n +# define GLOBAL_SYM(s) global s +# define LOCAL_LABEL(l) L%##l +# define IDENT(s) ident s +# define TEXT text +#else /* Assume we are using GNU as. */ +# define COMM .comm +# define DATA .data +# define EVEN .even +# define FILE(name) .file name +# define GLOBAL_SYM(s) .globl s +# define LOCAL_LABEL(l) .L.##l +# define IDENT(s) .section .comment;.asciz s +# define TEXT .text +#endif + + FILE ("mcrt0.s") + TEXT + GLOBAL_SYM (_start) +_start: mov.l %d0,splimit% + subq.w &8,%sp + mov.l 8(%sp),(%sp) + lea 12(%sp),%a0 + mov.l %a0,___Argv + mov.l %a0,4(%sp) + mov.l %a0,%a1 +LOCAL_LABEL(0): + tst.l (%a0)+ + bne.b LOCAL_LABEL(0) +#ifdef SGS_CMP_ORDER + cmpa.l %a0,(%a1) +#else + cmpa.l (%a1),%a0 +#endif + blt.b LOCAL_LABEL(1) + subq.w &4,%a0 +LOCAL_LABEL(1): + mov.l %a0,8(%sp) + mov.l %a0,environ + jsr initfpu + + sub &8,%sp + clr.l %d0 /* if (! isatty (fileno (stderr))) */ + mov.b _iob+27,%d0 + mov.l %d0,-(%sp) + jsr isatty + addq.w &4,%sp + tst.l %d0 + bne.b LOCAL_LABEL(isatty) + clr.l -(%sp) /* setbuf (stderr, NULL) */ + pea _iob+28 + jsr setbuf + addq.w &8,%sp +LOCAL_LABEL(isatty): + addq.w &8,%sp + + mov.l &600,-(%sp) + mov.l &etext,%d1 + subi.l &LOCAL_LABEL(endofstart),%d1 + addq.l &1,%d1 + bclr &0,%d1 + addi.l &4812,%d1 + asr.l &1,%d1 + mov.l %d1,-(%sp) + add.l %d1,%d1 + mov.l %d1,-(%sp) + jsr sbrk + addq.w &4,%sp +#ifdef SGS_CMP_ORDER + cmpa.l %a0,&-1 +#else + cmpa.l &-1,%a0 +#endif + beq.b LOCAL_LABEL(3) + mov.l %a0,-(%sp) + add.l &12,%a0 + mov.l %a0,_countbase + mov.l &etext,-(%sp) + mov.l &LOCAL_LABEL(endofstart),-(%sp) + jsr monitor + lea 20(%sp),%sp + jsr main + mov.l %d0,(%sp) + jsr exit +_exit: moveq &1,%d0 + trap &0 + + GLOBAL_SYM (__stop_monitor) +__stop_monitor: + clr.l -(%sp) + jsr monitor + add.w &4,%sp + rts + +LOCAL_LABEL(errtxt): + byte 'N,'o,' ,'s,'p,'a,'c,'e,' ,'f,'o,'r,' ,'m,'o,'n + byte 'i,'t,'o,'r,' ,'b,'u,'f,'f,'e,'r,'\n +LOCAL_LABEL(errtxt_end): + + EVEN +LOCAL_LABEL(3): + pea LOCAL_LABEL(errtxt_end)-LOCAL_LABEL(errtxt) + pea LOCAL_LABEL(errtxt)(%pc) + pea 2 + jsr write + bra.b _exit +LOCAL_LABEL(endofstart): + + EVEN + + COMM splimit%,4 + COMM environ,4 + COMM _countbase,4 + + IDENT ("$Id: mot3300Mcrt0.S,v 1.23 1999/01/15 07:37:19 law Exp $") + IDENT ("Contributed by Manfred Hollstein (manfred@lts.sel.alcatel.de)") + IDENT ("Corrections by Philippe De Muyter (phdm@macqel.be)") |