From: Ian Lance Taylor <ian@airs.com>
Date: Fri, 24 Feb 1995 19:42:43 +0000 (+0000)
Subject: 	* config/tc-mips.c (load_register): Correctly handle 32 bit values
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=7811254cb06d1572e617939689a38a96a9d6c6e3;p=deliverable%2Fbinutils-gdb.git

	* config/tc-mips.c (load_register): Correctly handle 32 bit values
	with the high bit set in 64 bit mode.
PR 6381.
---

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 33e45e63f2..81ff996be2 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+Fri Feb 24 14:41:15 1995  Ian Lance Taylor  <ian@cygnus.com>
+
+	* config/tc-mips.c (load_register): Correctly handle 32 bit values
+	with the high bit set in 64 bit mode.
+
 Wed Feb 22 23:10:56 1995  Jeff Law  (law@snake.cs.utah.edu)
 
 	* config/tc-hppa.c (md_apply_fix): Don't subtract the value of the
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index 9e7924a98e..c0cb3c42e6 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -1634,7 +1634,7 @@ load_register (counter, reg, ep)
      expressionS *ep;
 {
   int shift;
-  expressionS hi32, lo32;
+  expressionS hi32, lo32, tmp;
 
   if (ep->X_op != O_big)
     {
@@ -1656,9 +1656,12 @@ load_register (counter, reg, ep)
 		       (int) BFD_RELOC_LO16);
 	  return;
 	}
-      else if ((ep->X_add_number &~ (offsetT) 0x7fffffff) == 0
-	       || ((ep->X_add_number &~ (offsetT) 0x7fffffff)
-		   == ~ (offsetT) 0x7fffffff))
+      else if (((ep->X_add_number &~ (offsetT) 0x7fffffff) == 0
+		|| ((ep->X_add_number &~ (offsetT) 0x7fffffff)
+		    == ~ (offsetT) 0x7fffffff))
+	       && (mips_isa < 3
+		   || sizeof (ep->X_add_number) > 4
+		   || (ep->X_add_number & 0x80000000) == 0))
 	{
 	  /* 32 bit values require an lui.  */
 	  macro_build ((char *) NULL, counter, ep, "lui", "t,u", reg,
@@ -1668,6 +1671,19 @@ load_register (counter, reg, ep)
 			 (int) BFD_RELOC_LO16);
 	  return;
 	}
+      else
+	{
+	  /* 32 bit value with high bit set being loaded into a 64 bit
+             register.  We can't use lui, because that would
+             incorrectly set the 32 high bits.  */
+	  generic_bignum[3] = 0;
+	  generic_bignum[2] = 0;
+	  generic_bignum[1] = (ep->X_add_number >> 16) & 0xffff;
+	  generic_bignum[0] = ep->X_add_number & 0xffff;
+	  tmp.X_op = O_big;
+	  tmp.X_add_number = 4;
+	  ep = &tmp;
+	}
     }
 
   /* The value is larger than 32 bits.  */