target/arm: Implement SVE Index Generation Group

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180516223007.10256-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
index 56a4eb71d5..385bb8b314 100644
--- a/target/arm/sve_helper.c
+++ b/target/arm/sve_helper.c
@@ -992,3 +992,43 @@ DO_ZPZZZ_D(sve_mls_d, uint64_t, DO_MLS)
 #undef DO_MLS
 #undef DO_ZPZZZ
 #undef DO_ZPZZZ_D
+
+void HELPER(sve_index_b)(void *vd, uint32_t start,
+                         uint32_t incr, uint32_t desc)
+{
+    intptr_t i, opr_sz = simd_oprsz(desc);
+    uint8_t *d = vd;
+    for (i = 0; i < opr_sz; i += 1) {
+        d[H1(i)] = start + i * incr;
+    }
+}
+
+void HELPER(sve_index_h)(void *vd, uint32_t start,
+                         uint32_t incr, uint32_t desc)
+{
+    intptr_t i, opr_sz = simd_oprsz(desc) / 2;
+    uint16_t *d = vd;
+    for (i = 0; i < opr_sz; i += 1) {
+        d[H2(i)] = start + i * incr;
+    }
+}
+
+void HELPER(sve_index_s)(void *vd, uint32_t start,
+                         uint32_t incr, uint32_t desc)
+{
+    intptr_t i, opr_sz = simd_oprsz(desc) / 4;
+    uint32_t *d = vd;
+    for (i = 0; i < opr_sz; i += 1) {
+        d[H4(i)] = start + i * incr;
+    }
+}
+
+void HELPER(sve_index_d)(void *vd, uint64_t start,
+                         uint64_t incr, uint32_t desc)
+{
+    intptr_t i, opr_sz = simd_oprsz(desc) / 8;
+    uint64_t *d = vd;
+    for (i = 0; i < opr_sz; i += 1) {
+        d[i] = start + i * incr;
+    }
+}