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deflate.sh revision 1.1.2.2 
      1 #!/bin/sh
      2 
      3 kernel=$1
      4 
      5 
      6 CMF=0x78
      7 FLG=0x9c
      8 (echo $CMF && echo $FLG) | \
      9     ${TOOL_AWK} '{ printf "%c", int($0); }' > ${kernel}.gz
     10 
     11 gzip -nc ${kernel} | dd bs=10 skip=1 of=${kernel}.gz.tmp
     12 SIZE=`ls -l ${kernel}.gz.tmp | cut -d ' ' -f 8`
     13 dd if=${kernel}.gz.tmp bs=`expr $SIZE - 8` count=1 >> ${kernel}.gz
     14 rm ${kernel}.gz.tmp
     15 
     16 # calculate adler-32
     17 ${TOOL_HEXDUMP} -v -e '1/1 "0x%02x\n"' ${kernel} | \
     18   ${TOOL_AWK} 'BEGIN { A = 1; B = 0 }
     19        {
     20 	   A = (A + $0) % 65521;
     21 	   B = (B + A) % 65521;
     22        }
     23        END { printf "%c%c%c%c", B / 256, B % 256, A / 256, A % 256; }' \
     24   >> ${kernel}.gz
     25