x86: implement x87 fp instruction fnstsw

This patch implements the fnstsw instruction. The code was originally written
by Vince Weaver. Gabe had made some comments about the code, but those were
never addressed. This patch addresses those comments.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/arch/x86/isa/decoder/x87.isa b/src/arch/x86/isa/decoder/x87.isa
index 4ed902192..3af68cd54 100644
--- a/src/arch/x86/isa/decoder/x87.isa
+++ b/src/arch/x86/isa/decoder/x87.isa
@@ -112,7 +112,7 @@ format WarnUnimpl {
                     0x6: fsin();
                     0x7: fcos();
                 }
-                default: fnstcw_Mw();
+                default: Inst::FNSTCW(Mw);
             }
         }
         //0x2: esc2();
@@ -247,7 +247,7 @@ format WarnUnimpl {
             }
             0x7: decode MODRM_MOD {
                 0x3: Inst::UD2();
-                default: fnstsw();
+                default: Inst::FNSTSW(Mw);
             }
         }
         //0x6: esc6();
@@ -310,7 +310,7 @@ format WarnUnimpl {
             }
             0x4: decode MODRM_MOD {
                 0x3: decode MODRM_RM {
-                    0x0: fnstsw();
+                    0x0: Inst::FNSTSW(rAw);
                     default: Inst::UD2();
                 }
                 default: fbld();