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authorOlof Johansson <olof@lixom.net>2017-05-18 23:54:47 -0700
committerOlof Johansson <olof@lixom.net>2017-05-18 23:54:47 -0700
commit5252d73756f318f182f2316acd78a6532041414d (patch)
treeb082478fca4f00f599bb2ed1547b2652c2bea155 /scripts/Makefile.lib
parente84188852a7239d7a144af12f7e5dac8fa88600b (diff)
parent2ea659a9ef488125eb46da6eb571de5eae5c43f6 (diff)
downloadlwn-5252d73756f318f182f2316acd78a6532041414d.tar.gz
lwn-5252d73756f318f182f2316acd78a6532041414d.zip
Merge tag 'v4.12-rc1' into fixes
We've received a few fixes branches with -rc1 as base, but our contents was still at pre-rc1. Merge it in expliticly to make 'git merge --log' clear on hat was actually merged. Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'scripts/Makefile.lib')
-rw-r--r--scripts/Makefile.lib31
1 files changed, 31 insertions, 0 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index c9f975ab9840..6dc1eda13b8e 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -420,3 +420,34 @@ quiet_cmd_xzmisc = XZMISC $@
cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
(rm -f $@ ; false)
+
+# ASM offsets
+# ---------------------------------------------------------------------------
+
+# Default sed regexp - multiline due to syntax constraints
+#
+# Use [:space:] because LLVM's integrated assembler inserts <tab> around
+# the .ascii directive whereas GCC keeps the <space> as-is.
+define sed-offsets
+ 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \
+ /^->/{s:->#\(.*\):/* \1 */:; \
+ s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
+ s:->::; p;}'
+endef
+
+# Use filechk to avoid rebuilds when a header changes, but the resulting file
+# does not
+define filechk_offsets
+ (set -e; \
+ echo "#ifndef $2"; \
+ echo "#define $2"; \
+ echo "/*"; \
+ echo " * DO NOT MODIFY."; \
+ echo " *"; \
+ echo " * This file was generated by Kbuild"; \
+ echo " */"; \
+ echo ""; \
+ sed -ne $(sed-offsets); \
+ echo ""; \
+ echo "#endif" )
+endef