.project and helpers

3 files changed, 52 insertions, 0 deletions

diff --git a/build_helpers/bootloader.sh b/build_helpers/bootloader.sh
new file mode 100755
index 0000000..267ba91
--- /dev/null
+++ b/build_helpers/bootloader.sh
@@ -0,0 +1,5 @@
+#! /bin/sh
+set -e
+set -u
+FILENAME="bootloader"
+nasm "$FILENAME".asm -f bin -o "bin/$FILENAME".bin
diff --git a/build_helpers/compile.sh b/build_helpers/compile.sh
new file mode 100755
index 0000000..8f4f376
--- /dev/null
+++ b/build_helpers/compile.sh
@@ -0,0 +1,16 @@
+#! /bin/sh
+set -u
+set -e
+
+INPATH="$1"
+INBASEPATH="${INPATH%.*}"
+#       mangle such that no two names conflict (a/b/c and a/b.c conflicting would be no fun)
+OUTNAME="$(echo "$INBASEPATH" | sed 's/\./../g' | sed 's/\//._/g')"
+echo -n "[*] Building '$INPATH' to 'tmp/$OUTNAME'... "
+gcc -T linker.ld -m32 -nostartfiles -nostdlib -ffreestanding "$INPATH" -o "tmp/$OUTNAME".o
+echo " OK!"
+echo -n "[+] Stripping unnecessary sections... "
+objcopy -R .note.gnu.build-id -R .comment -O binary "tmp/$OUTNAME".o "bin/$OUTNAME".bin
+echo " OK!"
+rm "tmp/$OUTNAME".o
+
diff --git a/build_helpers/splicetobootsect.sh b/build_helpers/splicetobootsect.sh
new file mode 100755
index 0000000..ac4ca0d
--- /dev/null
+++ b/build_helpers/splicetobootsect.sh
@@ -0,0 +1,31 @@
+#! /bin/bash
+set -u
+set -e
+
+if [ -z "$1" ] || [ ! -f "$1" ]; then
+  echo "Argument must be the path to a binary to splice into a bootsector"
+  exit 1
+fi
+
+INSIZE=$(stat -c%s $1)
+if [ $INSIZE -ge 510 ]; then
+  echo "Input file is greater than bootsector max size (510 bytes)"
+  exit 1
+fi
+
+OUTFILE="bootable.img"
+echo -n "[*] Creating bootsector template... "
+dd if=/dev/zero bs=510 count=1 of="$OUTFILE" >/dev/null 2>&1
+echo -ne "\x55\xaa" >> "$OUTFILE"
+dd if=/dev/zero bs=512 count=255 ibs=512 seek=1 of="$OUTFILE" >/dev/null 2>&1
+echo " OK!"
+
+echo -n "[*] Inserting bootsector... "
+dd if="$1" of="$OUTFILE" conv=notrunc >/dev/null 2>&1
+echo " OK!"
+
+echo -n "[*] Inserting kernel... "
+dd if="bin/src._kernel._main.bin" of="$OUTFILE" conv=notrunc ibs=512 seek=1 >/dev/null 2>&1
+echo " OK!"
+echo "Done. File at:"
+echo "$OUTFILE"