1 files changed, 69 insertions, 0 deletions
diff --git a/src/build-utils.sh b/src/build-utils.sh
new file mode 100755
index 0000000..77ca1e0
--- /dev/null
+++ b/src/build-utils.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+cmd_align-size () {
+	local aligned
+	
+	if [ $# -lt 2 ]; then
+		echo "Usage: $0 <alignment> <size>" >&2
+		return 2
+	fi
+
+	let "aligned = $2 % $1"
+	if [ $aligned -eq 0 ]; then
+		aligned=$2
+	else
+		let "aligned = ($2 / $1 + 1) * $1"
+	fi
+
+	echo $aligned
+
+	return 0
+}
+
+cmd_align-file () {
+	if [ $# -lt 2 ]; then
+		echo "Usage: $0 <alignment> <file>" >&2
+		return 2
+	fi
+
+	truncate -s $("$SELF" align-size "$1" $(stat -c "%s" $2)) "$2"
+}
+
+cmd_append-uint32 () {
+	local a b c d
+
+	if [ $# -lt 2 ]; then
+		echo "Usage: $0 <value> <file>" >&2
+		return 2
+	fi
+
+	let "a = ($1 & 0xFF000000) >> 24"
+	let "b = ($1 & 0x00FF0000) >> 16"
+	let "c = ($1 & 0x0000FF00) >> 8"
+	let "d = ($1 & 0x000000FF) >> 0"
+	a=$(printf "%X" $a)
+	b=$(printf "%X" $b)
+	c=$(printf "%X" $c)
+	d=$(printf "%X" $d)
+	printf "\\x$a\\x$b\\x$c\\x$d" >> "$2"
+}
+
+cmd_append-uint16 () {
+	local a b
+
+	if [ $# -lt 2 ]; then
+		echo "Usage: $0 <value> <file>" >&2
+		return 2
+	fi
+
+	let "a = ($1 & 0xFF00) >> 8"
+	let "b = ($1 & 0x00FF) >> 0"
+	a=$(printf "%X" $a)
+	b=$(printf "%X" $b)
+	printf "\\x$a\\x$b" >> "$2"
+}
+
+SELF="$0"
+cmd="$1"
+shift 1
+
+"cmd_$cmd" $@