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vmx: fix pix_multiply for ppc64le

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vec_mergeh/l operates differently for BE and LE, because of the order of
the vector elements (l->r in BE and r->l in LE).
To fix that, we simply need to swap between the input parameters, in case
we are working in LE.

v2:

- replace _LITTLE_ENDIAN with WORDS_BIGENDIAN for consistency
- fixed whitespaces and indentation issues

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Oded Gabbay 2015-06-25 15:59:57 +03:00 committed by Pekka Paalanen
parent 8d379ad88e
commit 2be523b204
1 changed files with 21 additions and 0 deletions
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21
pixman/pixman-vmx.c
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@ -57,12 +57,22 @@ pix_multiply (vector unsigned int p, vector unsigned int a)
/* unpack to short */
hi = (vector unsigned short)
#ifdef WORDS_BIGENDIAN
vec_mergeh ((vector unsigned char)AVV (0),
(vector unsigned char)p);
#else
vec_mergeh ((vector unsigned char) p,
(vector unsigned char) AVV (0));
#endif
mod = (vector unsigned short)
#ifdef WORDS_BIGENDIAN
vec_mergeh ((vector unsigned char)AVV (0),
(vector unsigned char)a);
#else
vec_mergeh ((vector unsigned char) a,
(vector unsigned char) AVV (0));
#endif
hi = vec_mladd (hi, mod, (vector unsigned short)
AVV (0x0080, 0x0080, 0x0080, 0x0080,
@ -74,11 +84,22 @@ pix_multiply (vector unsigned int p, vector unsigned int a)
/* unpack to short */
lo = (vector unsigned short)
#ifdef WORDS_BIGENDIAN
vec_mergel ((vector unsigned char)AVV (0),
(vector unsigned char)p);
#else
vec_mergel ((vector unsigned char) p,
(vector unsigned char) AVV (0));
#endif
mod = (vector unsigned short)
#ifdef WORDS_BIGENDIAN
vec_mergel ((vector unsigned char)AVV (0),
(vector unsigned char)a);
#else
vec_mergel ((vector unsigned char) a,
(vector unsigned char) AVV (0));
#endif
lo = vec_mladd (lo, mod, (vector unsigned short)
AVV (0x0080, 0x0080, 0x0080, 0x0080,