This is the mail archive of the gdb-patches@sourceware.org mailing list for the GDB project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[v850 sim] shift by 0, carry


The manual says that shifting by 0 is a special case for the carry
bit.

2006-04-12  DJ Delorie  <dj@redhat.com>

	* simops.c (OP_2A0): If the shift count is zero, clear the
	carry.
	(OP_A007E0): Likewise.
	(OP_2C0): Likewise.
	(OP_C007E0): Likewise.
	(OP_280): Likewise.
	(OP_8007E0): Likewise.

Index: simops.c
===================================================================
RCS file: /cvs/src/src/sim/v850/simops.c,v
retrieving revision 1.8
diff -p -U3 -r1.8 simops.c
--- simops.c	18 Jan 2004 14:56:40 -0000	1.8
+++ simops.c	13 Apr 2006 01:09:27 -0000
@@ -1104,7 +1104,7 @@ OP_2A0 ()
   /* Compute the condition codes.  */
   z = (result == 0);
   s = (result & 0x80000000);
-  cy = (op1 & (1 << (op0 - 1)));
+  cy = op0 ? (op1 & (1 << (op0 - 1))) : 0;
 
   /* Store the result and condition codes.  */
   State.regs[ OP[1] ] = result;
@@ -1131,7 +1131,7 @@ OP_A007E0 ()
   /* Compute the condition codes.  */
   z = (result == 0);
   s = (result & 0x80000000);
-  cy = (op1 & (1 << (op0 - 1)));
+  cy = op0 ? (op1 & (1 << (op0 - 1))) : 0;
 
   /* Store the result and condition codes.  */
   State.regs[OP[1]] = result;
@@ -1157,7 +1157,7 @@ OP_2C0 ()
   /* Compute the condition codes.  */
   z = (result == 0);
   s = (result & 0x80000000);
-  cy = (op1 & (1 << (32 - op0)));
+  cy = op0 ? (op1 & (1 << (32 - op0))) : 0;
 
   /* Store the result and condition codes.  */
   State.regs[OP[1]] = result;
@@ -1183,7 +1183,7 @@ OP_C007E0 ()
   /* Compute the condition codes.  */
   z = (result == 0);
   s = (result & 0x80000000);
-  cy = (op1 & (1 << (32 - op0)));
+  cy = op0 ? (op1 & (1 << (32 - op0))) : 0;
 
   /* Store the result and condition codes.  */
   State.regs[OP[1]] = result;
@@ -1209,7 +1209,7 @@ OP_280 ()
   /* Compute the condition codes.  */
   z = (result == 0);
   s = (result & 0x80000000);
-  cy = (op1 & (1 << (op0 - 1)));
+  cy = op0 ? (op1 & (1 << (op0 - 1))) : 0;
 
   /* Store the result and condition codes.  */
   State.regs[OP[1]] = result;
@@ -1235,7 +1235,7 @@ OP_8007E0 ()
   /* Compute the condition codes.  */
   z = (result == 0);
   s = (result & 0x80000000);
-  cy = (op1 & (1 << (op0 - 1)));
+  cy = op0 ? (op1 & (1 << (op0 - 1))) : 0;
 
   /* Store the result and condition codes.  */
   State.regs[OP[1]] = result;


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]