From: Jeff Law <law@redhat.com>
Date: Wed, 25 Feb 1998 08:58:23 +0000 (+0000)
Subject:         * simops.c (signed multiply instructions): Cast input operands to
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=097e6924c2d28d8171eaa4665b9dab9e63c8a967;p=binutils-gdb.git

    * simops.c (signed multiply instructions): Cast input operands to
        signed32 before casting them to signed64 so that the sign bit
        is propagated properly.
---

diff --git a/sim/mn10300/ChangeLog b/sim/mn10300/ChangeLog
index ad4abf2aca4..cc4a1b57334 100644
--- a/sim/mn10300/ChangeLog
+++ b/sim/mn10300/ChangeLog
@@ -1,3 +1,9 @@
+Wed Feb 25 01:59:29 1998  Jeffrey A Law  (law@cygnus.com)
+
+        * simops.c (signed multiply instructions): Cast input operands to
+        signed32 before casting them to signed64 so that the sign bit
+        is propagated properly.
+
 Mon Feb 23 20:23:19 1998  Mark Alexander  <marka@cygnus.com>
 
 	* Makefile.in: Last change was bad.  Define NL_TARGET
diff --git a/sim/mn10300/simops.c b/sim/mn10300/simops.c
index efed7dcc99e..6425e497229 100644
--- a/sim/mn10300/simops.c
+++ b/sim/mn10300/simops.c
@@ -1433,8 +1433,8 @@ void OP_F240 (insn, extension)
   unsigned long long temp;
   int n, z;
 
-  temp = ((signed64)State.regs[REG_D0 + REG0 (insn)]
-          *  (signed64)State.regs[REG_D0 + REG1 (insn)]);
+  temp = ((signed64)(signed32)State.regs[REG_D0 + REG0 (insn)]
+          *  (signed64)(signed32)State.regs[REG_D0 + REG1 (insn)]);
   State.regs[REG_D0 + REG0 (insn)] = temp & 0xffffffff;
   State.regs[REG_MDR] = (temp & 0xffffffff00000000LL) >> 32;;
   z = (State.regs[REG_D0 + REG0 (insn)] == 0);
@@ -3061,8 +3061,8 @@ void OP_F600 (insn, extension)
   unsigned long long temp;
   int n, z;
 
-  temp = ((signed64)State.regs[REG_D0 + REG0 (insn)]
-          *  (signed64)State.regs[REG_D0 + REG1 (insn)]);
+  temp = ((signed64)(signed32)State.regs[REG_D0 + REG0 (insn)]
+          *  (signed64)(signed32)State.regs[REG_D0 + REG1 (insn)]);
   State.regs[REG_D0 + REG0 (insn)] = temp & 0xffffffff;
   State.regs[REG_MDRQ] = (temp & 0xffffffff00000000LL) >> 32;;
   z = (State.regs[REG_D0 + REG0 (insn)] == 0);
@@ -3078,8 +3078,8 @@ void OP_F90000 (insn, extension)
   unsigned long long temp;
   int n, z;
 
-  temp = ((signed64)State.regs[REG_D0 + REG0_8 (insn)]
-          * (signed64)SEXT8 (insn & 0xff));
+  temp = ((signed64)(signed32)State.regs[REG_D0 + REG0_8 (insn)]
+          * (signed64)(signed32)SEXT8 (insn & 0xff));
   State.regs[REG_D0 + REG0_8 (insn)] = temp & 0xffffffff;
   State.regs[REG_MDRQ] = (temp & 0xffffffff00000000LL) >> 32;;
   z = (State.regs[REG_D0 + REG0_8 (insn)] == 0);
@@ -3095,8 +3095,8 @@ void OP_FB000000 (insn, extension)
   unsigned long long temp;
   int n, z;
 
-  temp = ((signed64)State.regs[REG_D0 + REG0_16 (insn)]
-          * (signed64)SEXT16 (insn & 0xffff));
+  temp = ((signed64)(signed32)State.regs[REG_D0 + REG0_16 (insn)]
+          * (signed64)(signed32)SEXT16 (insn & 0xffff));
   State.regs[REG_D0 + REG0_16 (insn)] = temp & 0xffffffff;
   State.regs[REG_MDRQ] = (temp & 0xffffffff00000000LL) >> 32;;
   z = (State.regs[REG_D0 + REG0_16 (insn)] == 0);
@@ -3112,8 +3112,8 @@ void OP_FD000000 (insn, extension)
   unsigned long long temp;
   int n, z;
 
-  temp = ((signed64)State.regs[REG_D0 + REG0_16 (insn)]
-          * (signed64)(((insn & 0xffff) << 16) + extension));
+  temp = ((signed64)(signed32)State.regs[REG_D0 + REG0_16 (insn)]
+          * (signed64)(signed32)(((insn & 0xffff) << 16) + extension));
   State.regs[REG_D0 + REG0_16 (insn)] = temp & 0xffffffff;
   State.regs[REG_MDRQ] = (temp & 0xffffffff00000000LL) >> 32;;
   z = (State.regs[REG_D0 + REG0_16 (insn)] == 0);