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From 2be523b20402b7c9f548ac33b8c0f0ed00156c64 Mon Sep 17 00:00:00 2001
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From: Oded Gabbay <oded.gabbay@gmail.com>
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Date: Thu, 25 Jun 2015 15:59:57 +0300
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Subject: [PATCH 5/5] vmx: fix pix_multiply for ppc64le
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vec_mergeh/l operates differently for BE and LE, because of the order of
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the vector elements (l->r in BE and r->l in LE).
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To fix that, we simply need to swap between the input parameters, in case
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we are working in LE.
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v2:
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- replace _LITTLE_ENDIAN with WORDS_BIGENDIAN for consistency
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- fixed whitespaces and indentation issues
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Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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Reviewed-by: Adam Jackson <ajax@redhat.com>
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Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
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---
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pixman/pixman-vmx.c | 21 +++++++++++++++++++++
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1 file changed, 21 insertions(+)
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diff --git a/pixman/pixman-vmx.c b/pixman/pixman-vmx.c
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index c963c28..cef921f 100644
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--- a/pixman/pixman-vmx.c
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+++ b/pixman/pixman-vmx.c
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@@ -57,12 +57,22 @@ pix_multiply (vector unsigned int p, vector unsigned int a)
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/* unpack to short */
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hi = (vector unsigned short)
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+#ifdef WORDS_BIGENDIAN
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vec_mergeh ((vector unsigned char)AVV (0),
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(vector unsigned char)p);
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+#else
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+ vec_mergeh ((vector unsigned char) p,
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+ (vector unsigned char) AVV (0));
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+#endif
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mod = (vector unsigned short)
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+#ifdef WORDS_BIGENDIAN
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vec_mergeh ((vector unsigned char)AVV (0),
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(vector unsigned char)a);
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+#else
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+ vec_mergeh ((vector unsigned char) a,
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+ (vector unsigned char) AVV (0));
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+#endif
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hi = vec_mladd (hi, mod, (vector unsigned short)
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AVV (0x0080, 0x0080, 0x0080, 0x0080,
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@@ -74,11 +84,22 @@ pix_multiply (vector unsigned int p, vector unsigned int a)
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/* unpack to short */
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lo = (vector unsigned short)
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+#ifdef WORDS_BIGENDIAN
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vec_mergel ((vector unsigned char)AVV (0),
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(vector unsigned char)p);
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+#else
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+ vec_mergel ((vector unsigned char) p,
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+ (vector unsigned char) AVV (0));
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+#endif
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+
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mod = (vector unsigned short)
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+#ifdef WORDS_BIGENDIAN
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vec_mergel ((vector unsigned char)AVV (0),
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(vector unsigned char)a);
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+#else
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+ vec_mergel ((vector unsigned char) a,
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+ (vector unsigned char) AVV (0));
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+#endif
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lo = vec_mladd (lo, mod, (vector unsigned short)
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AVV (0x0080, 0x0080, 0x0080, 0x0080,
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--
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2.4.3
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