29 lines
1.1 KiB
Diff
29 lines
1.1 KiB
Diff
commit 321771ee63740333ad355244e0764295218843b8
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Author: Mark Wielaard <mark@klomp.org>
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Date: Sun Dec 9 14:26:39 2018 +0100
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memcheck: Allow unaligned loads of 128bit vectors on ppc64[le].
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On powerpc partial unaligned loads of vectors from partially invalid
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addresses are OK and could be generated by our translation of lxvd2x.
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Adjust partial_load memcheck tests to allow partial loads of 16 byte
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vectors on powerpc64.
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Part of resolving bug #386945.
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diff --git a/memcheck/mc_main.c b/memcheck/mc_main.c
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index 737f79d..101916b 100644
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--- a/memcheck/mc_main.c
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+++ b/memcheck/mc_main.c
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@@ -1354,6 +1354,9 @@ void mc_LOADV_128_or_256_slow ( /*OUT*/ULong* res,
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tl_assert(szB == 16); // s390 doesn't have > 128 bit SIMD
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/* OK if all loaded bytes are from the same page. */
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Bool alignedOK = ((a & 0xfff) <= 0x1000 - szB);
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+# elif defined(VGA_ppc64be) || defined(VGA_ppc64le)
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+ /* lxvd2x might generate an unaligned 128 bit vector load. */
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+ Bool alignedOK = (szB == 16);
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# else
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/* OK if the address is aligned by the load size. */
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Bool alignedOK = (0 == (a & (szB - 1)));
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