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/* The start module mcrt0.s for the SysV68 Motorola 3300 Delta Series.
Copyright (C) 1996 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 SECTION(n) section n
# 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 SECTION(n) .section n
# define STRING(s) .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 (mcount)
EVEN
mcount: bra mcount%
LOCAL_LABEL(errtxt):
#ifdef STRING
STRING ("No space for monitor buffer\n")
#else
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,0
#endif
EVEN
LOCAL_LABEL(3):
mov.l &28,-(%sp)
mov.l &LOCAL_LABEL(errtxt),-(%sp)
moveq &2,%d0
mov.l %d0,-(%sp)
jsr write
bra.b _exit
LOCAL_LABEL(endofstart):
nop
EVEN
COMM splimit%,4
COMM environ,4
COMM _countbase,4
#ifdef STRING
SECTION (.comment)
STRING ("$Id: mcrt0.S,v 1.5 1995/12/07 17:23:39 manfred Exp $\n")
STRING ("Contributed by manfred@lts.sel.alcatel.de (Manfred Hollstein, Germany)\n")
#else
byte 'C,'o,'n,'t,'r,'i,'b,'u,'t,'e,'d,' ,'b,'y
byte ' ,'m,'a,'n,'f,'r,'e,'d,'@,'l,'t,'s,'.,'s
byte 'e,'l,'.,'a,'l,'c,'a,'t,'e,'l,'.,'d,'e,'
byte '(,'M,'a,'n,'f,'r,'e,'d,' ,'H,'o,'l,'l,'s
byte 't,'e,'i,'n,',,' ,'G,'e,'r,'m,'a,'n,'y,')
byte 10,0
#endif
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