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sync to upstream dtc.git commit 45f3d1a095dd ("libfdt: overlay: make
overlay_get_target() public") from previous upstream sync commit 243176c
("Fix bogus error on rebuild"). This mainly updates license headers,
fixes one or two small bugs, sign mismatches, integer overflow, and
cases of undefined behaviour, compile warnings for newer compilers, and
introduces some checking options (which might be useful to speed up fdt
operations on awan).
The recipe for this patch is:
$ cp ../dtc/libfdt/* libfdt/
$ git add libfdt/fdt_check.c
$ rm libfdt/meson.build
Then add the INT32_MAX define to libc/include/limits.h, and update
libfdt/Makefile.inc and libfdt/README.skiboot.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
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Upgrade libfdt/ to github.com/dgibson/dtc.git 243176c ("Fix bogus
error on rebuild")
This copies dtc/libfdt/ to skiboot/libfdt/, with the only change in
that directory being the addition of README.skiboot and Makefile.inc.
This adds about 14kB text, 2.5kB compressed xz. This could be reduced
or mostly eliminated by cutting out fdt version checks and unused
code, but tracking upstream is a bigger benefit at the moment.
This loses commits:
14ed2b842f61 ("libfdt: add basic sanity check to fdt_open_into")
bc7bb3d12bc1 ("sparse: fix declaration of fdt_strerror")
As well as some prehistoric similar kinds of things, which is the
punishment for us not being good downstream citizens and sending
things upstream! Syncing to upstream will make that effort simpler
in future.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
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This changes to build system to use thin archives rather than
incremental linking for built-in.o, similar to recent change to Linux.
built-in.o is renamed to built-in.a, and is created as a thin archive
with no index, for speed and size. All built-in.a are aggregated into
a skiboot.tmp.a which is a thin archive built with an index, making it
suitable or linking. This is input into the final link.
The advantags of build size and linker code placement flexibility are
not as great with skiboot as a bigger project like Linux, but it's a
conceptually better way to build, and is more compatible with link
time optimisation in toolchains which might be interesting for skiboot
particularly for size reductions.
Size of build tree before this patch is 34.4MB, afterwards 23.1MB.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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See https://github.com/lucasdemarchi/codespel
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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usage
Luckily, thanks to boot coverage report, we never called this function:
http://open-power.github.io/skiboot/boot-coverage-report/libfdt/fdt_sw.c.gcov.html
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
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Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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