From: Aleksandar Andrejevic <aandrejevic@reactos.org>
Date: Sat, 11 Oct 2014 14:40:53 +0000 (+0000)
Subject: [FAST486]
X-Git-Tag: backups/0.3.17@66124~85
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=beb08f639def87a824fbf95390193971ad12e5e0

[FAST486]
Revert the previous fix and fix it again, but properly.


svn path=/trunk/; revision=64671
---

diff --git a/reactos/lib/fast486/fpu.c b/reactos/lib/fast486/fpu.c
index 96fd0a1e73d..e0c42ead1fa 100644
--- a/reactos/lib/fast486/fpu.c
+++ b/reactos/lib/fast486/fpu.c
@@ -511,10 +511,10 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
     else
     {
         /* Only a few of these instructions have any meaning on a 487 */
-        switch ((ModRegRm.SecondRegister << 3) | ModRegRm.Register)
+        switch ((ModRegRm.Register << 3) | ModRegRm.SecondRegister)
         {
             /* FCLEX */
-            case 0x42:
+            case 0x22:
             {
                 /* Clear exception data */
                 State->FpuStatus.Ie =
@@ -531,7 +531,7 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
             }
 
             /* FINIT */
-            case 0x43:
+            case 0x23:
             {
                 /* Restore the state */
                 State->FpuControl.Value = FAST486_FPU_DEFAULT_CONTROL;
@@ -542,9 +542,9 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
             }
 
             /* FENI */
-            case 0x40:
+            case 0x20:
             /* FDISI */
-            case 0x41:
+            case 0x21:
             {
                 /* These do nothing */
                 break;