Merge pull request #677 from ucb-bar/smartelf2hex-fix

Fix smartelf2hex.sh creating files 64x the minimum size
This commit is contained in:
Jerry Zhao
2020-09-22 17:04:45 -07:00
committed by GitHub
2 changed files with 5 additions and 3 deletions

View File

@@ -8,7 +8,9 @@ binary=$1
segments=`readelf --segments --wide $binary`
entry_hex=`echo -e "$segments" | grep "Entry point" | cut -f3 -d' ' | sed 's/0x//' | tr [:lower:] [:upper:]`
entry_dec=`bc <<< "ibase=16;$entry_hex"`
length_hex=`echo "$segments" | grep LOAD | tail -n 1 | tr -s [:space:] | cut -f4,6 -d' '`
length_hex=`echo "$segments" | grep "LOAD\|TLS" | tail -n 1 | tr -s [:space:] | cut -f4,6 -d' '`
length_dec=`echo $length_hex | tr -d x | tr [:lower:] [:upper:] | tr ' ' + | sed 's/^/ibase=16;/' | sed "s/$/-$entry_hex/" | bc`
power_2_length=`echo "x=l($length_dec)/l(2); scale=0; 2^((x+1)/1)" | bc -l`
elf2hex 64 $power_2_length $binary $entry_dec
width=64
depth=$((power_2_length / width))
elf2hex $width $depth $binary $entry_dec