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authorChen Gang <gang.chen.5i5j@gmail.com>2015-09-22 05:47:35 +0800
committerRichard Henderson <rth@twiddle.net>2015-10-07 20:03:13 +1100
commit0ab0a3d768a4f6ab6747b6fd936c5cf70b5069c2 (patch)
tree10d80bde7b4cc69fda80462a5318bcade3549651 /target-tilegx/simd_helper.c
parent055130107683c3b199c1848a25e5e2c568230cbf (diff)
downloadqemu-arm-0ab0a3d768a4f6ab6747b6fd936c5cf70b5069c2.tar.gz
target-tilegx: Implement v*shl, v*shru, and v*shrs instructions
v2sh* are implemented with helper functions; v4sh* are implmeneted with inline code. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Message-Id: <1442872055-2836-1-git-send-email-gang.chen.5i5j@gmail.com> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-tilegx/simd_helper.c')
-rw-r--r--target-tilegx/simd_helper.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/target-tilegx/simd_helper.c b/target-tilegx/simd_helper.c
index f573f9b51a..1c59a92216 100644
--- a/target-tilegx/simd_helper.c
+++ b/target-tilegx/simd_helper.c
@@ -25,6 +25,7 @@
/* Broadcast a value to all elements of a vector. */
#define V1(X) (((X) & 0xff) * 0x0101010101010101ull)
+#define V2(X) (((X) & 0xffff) * 0x0001000100010001ull)
uint64_t helper_v1shl(uint64_t a, uint64_t b)
@@ -36,6 +37,15 @@ uint64_t helper_v1shl(uint64_t a, uint64_t b)
return (a & m) << b;
}
+uint64_t helper_v2shl(uint64_t a, uint64_t b)
+{
+ uint64_t m;
+
+ b &= 15;
+ m = V2(0xffff >> b);
+ return (a & m) << b;
+}
+
uint64_t helper_v1shru(uint64_t a, uint64_t b)
{
uint64_t m;
@@ -45,6 +55,15 @@ uint64_t helper_v1shru(uint64_t a, uint64_t b)
return (a & m) >> b;
}
+uint64_t helper_v2shru(uint64_t a, uint64_t b)
+{
+ uint64_t m;
+
+ b &= 15;
+ m = V2(0xffff << b);
+ return (a & m) >> b;
+}
+
uint64_t helper_v1shrs(uint64_t a, uint64_t b)
{
uint64_t r = 0;
@@ -56,3 +75,15 @@ uint64_t helper_v1shrs(uint64_t a, uint64_t b)
}
return r;
}
+
+uint64_t helper_v2shrs(uint64_t a, uint64_t b)
+{
+ uint64_t r = 0;
+ int i;
+
+ b &= 15;
+ for (i = 0; i < 64; i += 16) {
+ r = deposit64(r, i, 16, sextract64(a, i + b, 16 - b));
+ }
+ return r;
+}