include/asm-offsets.h: automatically generate assembler constants

[karo-tx-uboot.git] / tools / scripts / make-asm-offsets

diff --git a/tools/scripts/make-asm-offsets b/tools/scripts/make-asm-offsets
new file mode 100755 (executable)
index 0000000..61c095f
--- /dev/null
+++ b/tools/scripts/make-asm-offsets
@@ -0,0 +1,27 @@
+#!/bin/sh
+
+# Adapted from Linux kernel's "Kbuild":
+# commit 1cdf25d704f7951d02a04064c97db547d6021872
+# Author: Christoph Lameter <clameter@sgi.com>
+
+mkdir -p $(dirname $2)
+
+# Default sed regexp - multiline due to syntax constraints
+SED_CMD="/^->/{s:->#\(.*\):/* \1 */:; \
+       s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 (\2) /* \3 */:; \
+       s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
+       s:->::; p;}"
+
+(set -e
+ echo "#ifndef __ASM_OFFSETS_H__"
+ echo "#define __ASM_OFFSETS_H__"
+ echo "/*"
+ echo " * DO NOT MODIFY."
+ echo " *"
+ echo " * This file was generated by $(basename $0)"
+ echo " *"
+ echo " */"
+ echo ""
+ sed -ne "${SED_CMD}" $1 
+ echo ""
+ echo "#endif" ) > $2