From: Jeff Law <law@redhat.com>
Date: Fri, 12 Apr 1996 15:38:08 +0000 (+0000)
Subject:         * compile.c (sim_resume): Fix and simplify overflow and carry
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=9b1271617bf446b2015601820d2f996b3d16fe8a;p=deliverable%2Fbinutils-gdb.git

    * compile.c (sim_resume): Fix and simplify overflow and carry
        handling for 32bit ALU insns.
---

diff --git a/sim/h8300/ChangeLog b/sim/h8300/ChangeLog
index ce54af3b9c..04d56242e3 100644
--- a/sim/h8300/ChangeLog
+++ b/sim/h8300/ChangeLog
@@ -1,3 +1,8 @@
+Fri Apr 12 09:39:56 1996  Jeffrey A Law  (law@cygnus.com)
+
+	* compile.c (sim_resume): Fix and simplify overflow and carry
+	handling for 32bit ALU insns.
+
 Mon Apr  8 23:58:49 1996  Jeffrey A Law  (law@cygnus.com)
 
 	* compile.c (sim_resume): Fix overflow checks for ALU insns.
diff --git a/sim/h8300/compile.c b/sim/h8300/compile.c
index 7892dc6b84..cf1e9bcec8 100644
--- a/sim/h8300/compile.c
+++ b/sim/h8300/compile.c
@@ -1559,27 +1559,16 @@ sim_resume (step, siggnal)
 	case O_ADD:
 	  v = ((rd & 0x80000000) == (ea & 0x80000000)
 	       && (rd & 0x80000000) != (res & 0x80000000));
+	  c = ((unsigned) res < (unsigned) rd) || ((unsigned) res < (unsigned) ea);
 	  break;
 	case O_SUB:
 	case O_CMP:
 	  v = ((rd & 0x80000000) != (-ea & 0x80000000)
 	       && (rd & 0x80000000) != (res & 0x80000000));
-	  break;
-	case O_NEG:
-	  v = (rd == 0x80000000);
-	  break;
-	}
-      goto next;
-      switch (code->opcode / 4)
-	{
-	case O_ADD:
-	  c = ((unsigned) res < (unsigned) rd) || ((unsigned) res < (unsigned) ea);
-	  break;
-	case O_SUB:
-	case O_CMP:
 	  c = (unsigned) rd < (unsigned) -ea;
 	  break;
 	case O_NEG:
+	  v = (rd == 0x80000000);
 	  c = res != 0;
 	  break;
 	}