From 237c0617a0c095e35169c3f4e48e93eaf4ada527 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Wed, 2 Jun 2010 12:58:16 -0500
Subject: ARM: Implement conversion to/from half precision.

---
 src/arch/arm/isa/formats/fp.isa | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

(limited to 'src/arch/arm/isa/formats')

diff --git a/src/arch/arm/isa/formats/fp.isa b/src/arch/arm/isa/formats/fp.isa
index d509fc28a..03e574648 100644
--- a/src/arch/arm/isa/formats/fp.isa
+++ b/src/arch/arm/isa/formats/fp.isa
@@ -655,8 +655,23 @@ let {{
                 }
               case 0x2:
               case 0x3:
-                // Between half and single precision.
-                return new WarnUnimplemented("vcvtb, vcvtt", machInst);
+                {
+                    const bool toHalf = bits(machInst, 16);
+                    const bool top = bits(machInst, 7);
+                    if (top) {
+                        if (toHalf) {
+                            return new VcvtFpSFpHT(machInst, vd, vm);
+                        } else {
+                            return new VcvtFpHTFpS(machInst, vd, vm);
+                        }
+                    } else {
+                        if (toHalf) {
+                            return new VcvtFpSFpHB(machInst, vd, vm);
+                        } else {
+                            return new VcvtFpHBFpS(machInst, vd, vm);
+                        }
+                    }
+                }
               case 0x4:
                 if (single) {
                     if (e) {
-- 
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