* 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.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 59d592861049e9c01a188e1aaba9ee9e5b7fe5f9..669faad248ae7be40d3262ad86f77eed1626f376 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+2003-10-19  Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
+
+       * 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.
+
 2003-10-18  Hans-Peter Nilsson  <hp@bitrange.com>
 
        Generate BFD_RELOC_MMIX_PUSHJ_STUBBABLE for PUSHJ when possible.

diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index a7767659e4ced21501a5cba8e1f2875167bec71f..c34197223e22bc4e474064dddfaa41452d8859a6 100644 (file)
--- 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;