gas/

[deliverable/binutils-gdb.git] / gas / config / tc-i386.c

diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 4823ee7954610ed77106680a55900a1e3fcfed01..5ac7e0c88dc1ee3c2b3e3ebdbe972b653360ccdd 100644 (file)
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -303,6 +303,9 @@ static int allow_naked_reg = 0;
    frame as in 32 bit mode.  */
 static char stackop_size = '\0';
 
+/* Non-zero to optimize code alignment.  */
+int optimize_align_code = 1;
+
 /* Non-zero to quieten some warnings.  */
 static int quiet_warnings = 0;
 
@@ -1410,6 +1413,21 @@ md_assemble (line)
 
   if (i.tm.opcode_modifier & ImmExt)
     {
+      if ((i.tm.cpu_flags & CpuPNI) && i.operands > 0)
+       {
+          /* These Intel Precott New Instructions have the fixed
+            operands with an opcode suffix which is coded in the same
+            place as an 8-bit immediate field would be. Here we check
+            those operands and remove them afterwards.  */
+         unsigned int x;
+
+         for (x = 0; x < i.operands; x++) 
+           if (i.op[x].regs->reg_num != x)
+             as_bad (_("can't use register '%%%s' as operand %d in '%s'."),
+                       i.op[x].regs->reg_name, x + 1, i.tm.name);
+         i.operands = 0;
+       }
+
       /* These AMD 3DNow! and Intel Katmai New Instructions have an
         opcode suffix which is coded in the same place as an 8-bit
         immediate field would be.  Here we fake an 8-bit immediate
@@ -4889,9 +4907,9 @@ parse_register (reg_string, end_op)
 }
 \f
 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
-const char *md_shortopts = "kVQ:sq";
+const char *md_shortopts = "kVQ:sqn";
 #else
-const char *md_shortopts = "q";
+const char *md_shortopts = "qn";
 #endif
 
 struct option md_longopts[] = {
@@ -4912,6 +4930,10 @@ md_parse_option (c, arg)
 {
   switch (c)
     {
+    case 'n':
+      optimize_align_code = 0;
+      break;
+
     case 'q':
       quiet_warnings = 1;
       break;
@@ -4973,10 +4995,12 @@ md_show_usage (stream)
   -Q                      ignored\n\
   -V                      print assembler version number\n\
   -k                      ignored\n\
+  -n                      Do not optimize code alignment\n\
   -q                      quieten some warnings\n\
   -s                      ignored\n"));
 #else
   fprintf (stream, _("\
+  -n                      Do not optimize code alignment\n\
   -q                      quieten some warnings\n"));
 #endif
 }