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99 lines
2.3 KiB
ArmAsm
99 lines
2.3 KiB
ArmAsm
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/* The start module crt0.s for the SysV68 Motorola 3300 Delta Series.
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Copyright (C) 1996 Free Software Foundation, Inc.
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Contributed by Manfred Hollstein (manfred@lts.sel.alcatel.de).
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifdef MOTOROLA
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# define COMM comm
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# define DATA data
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# define EVEN even
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# define FILE(n) file n
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# define GLOBAL_SYM(s) global s
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# define LOCAL_LABEL(l) L%##l
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# define IDENT(s) ident s
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# define TEXT text
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#else /* Assume we are using GNU as. */
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# define COMM .comm
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# define DATA .data
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# define EVEN .even
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# define FILE(name) .file name
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# define GLOBAL_SYM(s) .globl s
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# define LOCAL_LABEL(l) .L.##l
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# define IDENT(s) .section .comment;.asciz s
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# define TEXT .text
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#endif
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FILE ("crt0.s")
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TEXT
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GLOBAL_SYM (_start)
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_start: mov.l %d0,splimit%
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subq.w &8,%sp
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mov.l 8(%sp),(%sp)
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lea 12(%sp),%a0
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mov.l %a0,4(%sp)
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mov.l %a0,%a1
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LOCAL_LABEL(0):
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tst.l (%a0)+
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bne.b LOCAL_LABEL(0)
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#ifdef SGS_CMP_ORDER
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cmpa.l %a0,(%a1)
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#else
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cmpa.l (%a1),%a0
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#endif
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blt.b LOCAL_LABEL(1)
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subq.w &4,%a0
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LOCAL_LABEL(1):
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mov.l %a0,8(%sp)
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mov.l %a0,environ
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jsr initfpu
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subq.w &8,%sp
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clr.l %d0 /* if (! isatty (fileno (stderr))) */
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mov.b _iob+27,%d0
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mov.l %d0,-(%sp)
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jsr isatty
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addq.w &4,%sp
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tst.l %d0
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bne.b LOCAL_LABEL(isatty)
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clr.l -(%sp) /* setbuf (stderr, NULL) */
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pea _iob+28
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jsr setbuf
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addq.w &8,%sp
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LOCAL_LABEL(isatty):
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addq.w &8,%sp
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jsr main
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mov.l %d0,(%sp)
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jsr exit
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moveq.l &1,%d0
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trap &0
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nop
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GLOBAL_SYM (__stop_monitor)
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__stop_monitor:
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rts
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EVEN
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COMM splimit%,4
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COMM environ,4
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IDENT ("$Id: mot3300-crt0.S,v 1.2 1997/12/22 23:41:12 kenner Exp $")
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IDENT ("Contributed by Manfred Hollstein (manfred@lts.sel.alcatel.de)")
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IDENT ("Corrections by Philippe De Muyter (phdm@macqel.be)")
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