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|
#!/bin/sh -
#
# This file is simply an example of what can be done using the new binary
# and symbol table output functions. It produces a byte array with the
# symbols in the object as array references within it.
#
# The output is a Linux OMAGIC binary created by ld86 -N, this means the
# object can be linked directly to C-functions created by the same GCC that
# compiled ld86.
#
# Use it in a makefile:
#
# .s86.o:
# as86_to_data $*.s86 $*.o $(AS86FLAGS)
#
[ $# -lt 2 ] && {
echo "Usage: `basename $0` infile outfile [as86 opts]" 1>&2
exit 1
}
trap "rm -f _$$.* ; exit 99" 1 2 3 15
LIBDIR='%%LIBDIR%%' # Set by make install
[ -d "$LIBDIR" ] || LIBDIR='%%BINDIR%%'
[ -d "$LIBDIR" ] || LIBDIR=/usr/bin
IFILE="$1"
OFILE="$2"
shift ; shift
RV=0
$LIBDIR/as86 "$@" "$IFILE" -b _$$.bin -s _$$.sym || RV=$?
[ "$RV" = 0 ] && {
(
cat _$$.sym
echo %%%%
od -v -t uC _$$.bin
echo %%%%
) | \
awk > _$$.v ' BEGIN{
startaddr="";
printf ".text\n.data\n";
}
/^%%%%$/ { flg++;
next;
}
flg==0 {
if(NF == 0) next;
if( substr($2,1,4) == "0000" ) $2=substr($2,5);
if( $1 == "+" && $4 == "$start" )
{
if( $2 != "0000" ) startaddr=" - $" $2;
}
else if( substr($3, 1, 1) == "E" && $4 != "start" && $4 != "size" && $4 != "data" )
{
printf "export _%s\n", $4
printf "_%s = * + $%s%s\n\n", $4, $2, startaddr;
}
next;
}
flg==1 {
if(NF <= 1) next;
printf " .byte ";
for(i=2;i<NF;i++) printf("%3d,", $i);
printf("%3d", $NF);
printf "\n";
}
'
RV=$?
}
[ "$RV" = 0 ] || { rm -f _$$.* ; exit $RV ; }
# If you want to see the assembler.
# cp _$$.v `basename $2 .o`.asm
$LIBDIR/as86 -o _$$.o86 _$$.v || RV=$?
[ "$RV" = 0 ] || { rm -f _$$.* ; exit $RV ; }
$LIBDIR/ld86 -r -N _$$.o86 -o _$$.o || RV=$?
[ "$RV" = 0 ] || { rm -f _$$.* ; exit $RV ; }
if [ "X$OFILE" = "X-" ]
then cat _$$.o
else mv -f _$$.o "$OFILE" || RV=$?
fi
rm -f _$$.*
exit $RV
|
