diff options
Diffstat (limited to 'build_helpers/compile.sh')
| -rwxr-xr-x | build_helpers/compile.sh | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/build_helpers/compile.sh b/build_helpers/compile.sh index 40cd293..f00549f 100755 --- a/build_helpers/compile.sh +++ b/build_helpers/compile.sh @@ -10,8 +10,18 @@ OUTNAME="src._kernel._main" echo -n "[*] Building '$INPATH' to 'tmp/$OUTNAME'... " gcc -T linker.ld -m32 -Wl,--build-id=none -nostartfiles -nostdlib -ffreestanding $INPATH -o "tmp/$OUTNAME".o echo " OK!" +echo -n "[+] Start address is... " +BIN_START=$(objdump tmp/src._kernel._main.o -f | grep start | cut -b 15-) +echo "$BIN_START" +# this actually writes three extra nulls, not sure why... +echo "$BIN_START" | xxd -r - | od -t x --endian=little | head | xxd -r - > "bin/$OUTNAME".bin echo -n "[+] Stripping unnecessary sections... " -objcopy -R .note.gnu.build-id -R .comment -O binary "tmp/$OUTNAME".o "bin/$OUTNAME".bin +objcopy -R .note.gnu.build-id -R .comment -O binary "tmp/$OUTNAME".o "tmp/converted_$OUTNAME".bin echo " OK!" -rm "tmp/$OUTNAME".o + +echo -n "[+] Joining kernel and start address... " +# adjust for the three extra nulls above +dd if="tmp/converted_$OUTNAME".bin of="bin/$OUTNAME".bin seek=4 oflag=seek_bytes conv=notrunc 2>/dev/null +echo " OK!" +#rm "tmp/$OUTNAME".o |