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authorRichard Henderson <rth@twiddle.net>2011-10-17 17:32:26 -0700
committerRichard Henderson <rth@twiddle.net>2011-10-26 13:58:48 -0700
commitf888300b818a46bb1b339d68d6748bc097396a7b (patch)
treee566afff5ad8ac8509d6c77a850fdda5a164a38e /target-sparc/vis_helper.c
parent445167723d12d6e14d4f11b4104c48c8b25329db (diff)
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target-sparc: Implement PDIST.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-sparc/vis_helper.c')
-rw-r--r--target-sparc/vis_helper.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/target-sparc/vis_helper.c b/target-sparc/vis_helper.c
index 39c8d9a..cd5d4a7 100644
--- a/target-sparc/vis_helper.c
+++ b/target-sparc/vis_helper.c
@@ -396,3 +396,24 @@ VIS_CMPHELPER(helper_fcmpgt, FCMPGT)
VIS_CMPHELPER(helper_fcmpeq, FCMPEQ)
VIS_CMPHELPER(helper_fcmple, FCMPLE)
VIS_CMPHELPER(helper_fcmpne, FCMPNE)
+
+uint64_t helper_pdist(uint64_t sum, uint64_t src1, uint64_t src2)
+{
+ int i;
+ for (i = 0; i < 8; i++) {
+ int s1, s2;
+
+ s1 = (src1 >> (56 - (i * 8))) & 0xff;
+ s2 = (src2 >> (56 - (i * 8))) & 0xff;
+
+ /* Absolute value of difference. */
+ s1 -= s2;
+ if (s1 < 0) {
+ s1 = -s1;
+ }
+
+ sum += s1;
+ }
+
+ return sum;
+}