forked from Imagelibrary/rtems
35 lines
1.7 KiB
Plaintext
35 lines
1.7 KiB
Plaintext
Import from:
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git://git.kernel.org/pub/scm/utils/dtc/dtc.git
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commit 2cd89f862cdb04d91c5d59c5b39647f7d5d5b3b8
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Author: David Gibson <david@gibson.dropbear.id.au>
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Date: Mon Nov 21 14:18:44 2022 +1100
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dtc: Warning rather than error on possible truncation of cell values
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We always evaluate integer values in cell arrays as 64-bit quantities, then
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truncate to the size of the array cells (32-bit by default). However to
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detect accidental truncation of meaningful values, we give an error if the
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truncated portion isn't either all 0 or all 1 bits. However, this can
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still give counterintuitive errors. For if the user is thinking in 2's
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complement 32-bit arithmetic (which would be quite natural), then they'd
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expect the expression (-0xffffffff-2) to evaluate to -1 (0xffffffff).
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However in 64-bit it evaluates to 0xfffffffeffffffff which does truncate
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to the expected value but trips this error message.
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Because of this reduce the error to only a warnings, with a somewhat more
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helpful message.
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Fixes: https://github.com/dgibson/dtc/issues/74
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Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Commands to generate update patches:
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git format-patch 2cd89f862cdb04d91c5d59c5b39647f7d5d5b3b8 -- libfdt/fdt_addresses.c libfdt/fdt.c libfdt/fdt_empty_tree.c libfdt/fdt.h libfdt/fdt_ro.c libfdt/fdt_rw.c libfdt/fdt_strerror.c libfdt/fdt_sw.c libfdt/fdt_wip.c libfdt/libfdt_env.h libfdt/libfdt.h libfdt/libfdt_internal.h libfdt/TODO
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sed -i 's%/libfdt/fdt.h%/cpukit/include/fdt.h%g' 00*
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sed -i 's%/libfdt/libfdt.h%/cpukit/include/libfdt.h%g' 00*
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sed -i 's%/libfdt/libfdt_env.h%/cpukit/include/libfdt_env.h%g' 00*
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sed -i 's%/libfdt/%/cpukit/dtc/libfdt/%g' 00*
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