From 13757d0cbbd8ac12fde8a36df42d5acd6370b401 Mon Sep 17 00:00:00 2001
From: Thiemo Seufer <ths@networkno.de>
Date: Sun, 19 Oct 2003 21:50:43 +0000
Subject: 	* config/tc-mips.c (normalize_constant_expr): New function to
 fix sign 	extensions broken by gas' expression evaluation of constants. 
 (check_absolute_expr): Use it. 	(mips_ip): Likewise.

---
 gas/config/tc-mips.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'gas/config')

diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index a776765..c341972 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -3329,6 +3329,14 @@ set_at (int *counter, int reg, int unsignedp)
     }
 }
 
+static void
+normalize_constant_expr (expressionS *ex)
+{
+  if (ex->X_op == O_constant && HAVE_32BIT_GPRS)
+    ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000)
+			- 0x80000000);
+}
+
 /* Warn if an expression is not a constant.  */
 
 static void
@@ -3338,6 +3346,8 @@ check_absolute_expr (struct mips_cl_insn *ip, expressionS *ex)
     as_bad (_("unsupported large constant"));
   else if (ex->X_op != O_constant)
     as_bad (_("Instruction %s requires absolute expression"), ip->insn_mo->name);
+
+  normalize_constant_expr (ex);
 }
 
 /* Count the leading zeroes by performing a binary chop. This is a
@@ -8562,6 +8572,7 @@ do_msbd:
 		  if (imm2_expr.X_op != O_big
 		      && imm2_expr.X_op != O_constant)
 		  insn_error = _("absolute expression required");
+		  normalize_constant_expr (&imm2_expr);
 		  s = expr_end;
 		  continue;
 
@@ -9050,6 +9061,7 @@ do_msbd:
 	      if (imm_expr.X_op != O_big
 		  && imm_expr.X_op != O_constant)
 		insn_error = _("absolute expression required");
+	      normalize_constant_expr (&imm_expr);
 	      s = expr_end;
 	      continue;
 
-- 
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