diff mbox series

[v2,07/14] target/arm: Implement FCVT (scalar, fixed-point) for fp16

Message ID 20180502221552.3873-8-richard.henderson@linaro.org
State New
Headers show
Series target/arm: Fixups for ARM_FEATURE_V8_FP16 | expand

Commit Message

Richard Henderson May 2, 2018, 10:15 p.m. UTC 
Cc: qemu-stable@nongnu.org
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 target/arm/translate-a64.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

-- 
2.14.3
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Patch

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index d794744aec..e19d97e8f1 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -5460,8 +5460,7 @@  static void disas_fp_fixed_conv(DisasContext *s, uint32_t insn)
     bool sf = extract32(insn, 31, 1);
     bool itof;
 
-    if (sbit || (type > 1)
-        || (!sf && scale < 32)) {
+    if (sbit || (!sf && scale < 32)) {
         unallocated_encoding(s);
         return;
     }
@@ -5480,6 +5479,20 @@  static void disas_fp_fixed_conv(DisasContext *s, uint32_t insn)
         return;
     }
 
+    switch (type) {
+    case 0: /* float32 */
+    case 1: /* float64 */
+        break;
+    case 3: /* float16 */
+        if (arm_dc_feature(s, ARM_FEATURE_V8_FP16)) {
+            break;
+        }
+        /* fallthru */
+    default:
+        unallocated_encoding(s);
+        return;
+    }
+
     if (!fp_access_check(s)) {
         return;
     }