[FAST486]

The bit number should be normalized to [0, DataSize- 1], not [0, 2 ^ DataSize - 1].

svn path=/branches/ntvdm/; revision=60975

diff --git a/lib/fast486/extraops.c b/lib/fast486/extraops.c
index 046ad9e..8d57bfc 100644 (file)
--- a/lib/fast486/extraops.c
+++ b/lib/fast486/extraops.c
@@ -566,7 +566,7 @@ FAST486_OPCODE_HANDLER(Fast486ExtOpcodeBitTest)
     }
 
     /* Normalize the bit number */
     }
 
     /* Normalize the bit number */

-    BitNumber &= (1 << DataSize) - 1;
+    BitNumber %= DataSize;

 
     if (OperandSize)
     {
 
     if (OperandSize)
     {


@@ -748,7 +748,7 @@ FAST486_OPCODE_HANDLER(Fast486ExtOpcodeBts)
     }
 
     /* Normalize the bit number */
     }
 
     /* Normalize the bit number */

-    BitNumber &= (1 << DataSize) - 1;
+    BitNumber %= DataSize;

 
     if (OperandSize)
     {
 
     if (OperandSize)
     {


@@ -1207,7 +1207,7 @@ FAST486_OPCODE_HANDLER(Fast486ExtOpcodeBtr)
     }
 
     /* Normalize the bit number */
     }
 
     /* Normalize the bit number */

-    BitNumber &= (1 << DataSize) - 1;
+    BitNumber %= DataSize;

 
     if (OperandSize)
     {
 
     if (OperandSize)
     {


@@ -1432,7 +1432,7 @@ FAST486_OPCODE_HANDLER(Fast486ExtOpcodeBtc)
     }
 
     /* Normalize the bit number */
     }
 
     /* Normalize the bit number */

-    BitNumber &= (1 << DataSize) - 1;
+    BitNumber %= DataSize;

 
     if (OperandSize)
     {
 
     if (OperandSize)
     {

diff --git a/lib/fast486/opgroups.c b/lib/fast486/opgroups.c
index fd99661..46ad234 100644 (file)
--- a/lib/fast486/opgroups.c
+++ b/lib/fast486/opgroups.c
@@ -1921,7 +1921,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeGroup0FBA)
     }
 
     /* Normalize the bit number */
     }
 
     /* Normalize the bit number */

-    BitNumber &= (1 << DataSize) - 1;
+    BitNumber %= DataSize;

 
     if (OperandSize)
     {
 
     if (OperandSize)
     {