svn commit: r269394 - head/contrib/binutils/gas/config

[Ian Lepore]

Author: ian
Date: Fri Aug  1 20:30:24 2014
New Revision: 269394
URL: http://svnweb.freebsd.org/changeset/base/269394

Log:
  Teach as(1) to handle the arm .arch_extension pseudo-op, which accepts
  the same values as the -march= command line option.  Add support for the
  "sec" extension (security extensions).
  
  We've been getting away without support for the sec extension because
  it's bogusly enabled even on arches where its presence is optional.  This
  support for .arch_extension is being added mainly so that we can use the
  right directives in our source code, and that helps folks using external
  toolchains (and will help us when we finally update our toolchain).

Modified:
  head/contrib/binutils/gas/config/tc-arm.c

Modified: head/contrib/binutils/gas/config/tc-arm.c
==============================================================================
--- head/contrib/binutils/gas/config/tc-arm.c	Fri Aug  1 20:21:41 2014	(r269393)
+++ head/contrib/binutils/gas/config/tc-arm.c	Fri Aug  1 20:30:24 2014	(r269394)
@@ -3837,6 +3837,7 @@ s_arm_eabi_attribute (int ignored ATTRIB
 #endif /* OBJ_ELF */
 
 static void s_arm_arch (int);
+static void s_arm_arch_extension (int);
 static void s_arm_object_arch (int);
 static void s_arm_cpu (int);
 static void s_arm_fpu (int);
@@ -3891,6 +3892,7 @@ const pseudo_typeS md_pseudo_table[] =
   { "syntax",	   s_syntax,	  0 },
   { "cpu",	   s_arm_cpu,	  0 },
   { "arch",	   s_arm_arch,	  0 },
+  { "arch_extension",	   s_arm_arch_extension,	  0 },
   { "object_arch", s_arm_object_arch,	0 },
   { "fpu",	   s_arm_fpu,	  0 },
 #ifdef OBJ_ELF
@@ -20154,6 +20156,7 @@ static const struct arm_option_cpu_value
   {"xscale",		ARM_FEATURE (0, ARM_CEXT_XSCALE)},
   {"iwmmxt",		ARM_FEATURE (0, ARM_CEXT_IWMMXT)},
   {"iwmmxt2",		ARM_FEATURE (0, ARM_CEXT_IWMMXT2)},
+  {"sec",		ARM_FEATURE (ARM_EXT_V6Z, 0)},
   {NULL,		ARM_ARCH_NONE}
 };
 
@@ -20738,6 +20741,34 @@ s_arm_arch (int ignored ATTRIBUTE_UNUSED
   ignore_rest_of_line ();
 }
 
+/* Parse a .arch_extension directive.  */
+
+static void
+s_arm_arch_extension (int ignored ATTRIBUTE_UNUSED)
+{
+  const struct arm_option_cpu_value_table *opt;
+  char saved_char;
+  char *name;
+
+  name = input_line_pointer;
+  while (*input_line_pointer && !ISSPACE(*input_line_pointer))
+    input_line_pointer++;
+  saved_char = *input_line_pointer;
+  *input_line_pointer = 0;
+
+  for (opt = arm_extensions; opt->name != NULL; opt++)
+    if (streq (opt->name, name))
+      {
+	ARM_MERGE_FEATURE_SETS (cpu_variant, cpu_variant, opt->value);
+	*input_line_pointer = saved_char;
+	demand_empty_rest_of_line ();
+	return;
+      }
+
+  as_bad (_("unknown architecture `%s'\n"), name);
+  *input_line_pointer = saved_char;
+  ignore_rest_of_line ();
+}
 
 /* Parse a .object_arch directive.  */